CN111385789A - Method for determining carrier aggregation capability of terminal and related equipment - Google Patents

Method for determining carrier aggregation capability of terminal and related equipment Download PDF

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Publication number
CN111385789A
CN111385789A CN201811619481.9A CN201811619481A CN111385789A CN 111385789 A CN111385789 A CN 111385789A CN 201811619481 A CN201811619481 A CN 201811619481A CN 111385789 A CN111385789 A CN 111385789A
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China
Prior art keywords
terminal
cell
network device
information
message
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Pending
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CN201811619481.9A
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Chinese (zh)
Inventor
王丁
崔立伟
姚楚婷
邝奕如
王键
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201811619481.9A priority Critical patent/CN111385789A/en
Priority to PCT/CN2019/128844 priority patent/WO2020135626A1/en
Publication of CN111385789A publication Critical patent/CN111385789A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Abstract

The application discloses a method and related equipment for determining carrier aggregation capability of a terminal, which can reduce the number of CA combinations reported by the terminal and avoid the condition that a base station cannot analyze all CA combinations reported by the terminal, thereby avoiding the compatibility problem and ensuring the success rate of network access of the terminal. Wherein, the method comprises the following steps: the terminal receives CA information of a cell sent by the network equipment, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell. And the terminal determines a second CA combination list according to the CA information sent by the network equipment and the CA combination supported by the terminal, and then sends the second CA combination list to the network equipment, wherein the second CA combination list is used for the network equipment to determine the CA capability of the terminal.

Description

Method for determining carrier aggregation capability of terminal and related equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a related device for determining carrier aggregation capability of a terminal.
Background
In an existing communication protocol, there is a maximum number limit on the number of CA combinations reported by a User Equipment (UE) to a base station, and for global general products, such as mobile phones for all networks and mobile broadband (MBB) products, the number of CA combinations actually supported may be more than the maximum value specified by the protocol. When the UE registers in the network, it does not know the maximum number of combinations that the base station can support, and when the number of reported CA combinations is greater than the number that the base station supports, a compatibility problem occurs, which eventually results in that the UE cannot access the network. Therefore, how to avoid the problem that the terminal cannot access the network due to the large number of CA combinations reported by the terminal is a technical problem that needs to be solved urgently at present.
Disclosure of Invention
The embodiment of the invention provides a method and related equipment for determining carrier aggregation capability of a terminal, which can reduce the number of CA combinations reported by the terminal, avoid the compatibility problem and ensure the success rate of network access of the terminal.
In a first aspect, an embodiment of the present invention provides a method for determining CA capability of a terminal, which is applied to a terminal side. The method comprises the following steps: the terminal receives CA information of a cell sent by the network equipment, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell. And the terminal sends a second CA combination list to the network equipment, wherein the second CA combination list is determined by the terminal according to the CA information sent by the network equipment and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
By implementing the embodiment of the invention, the terminal determines the CA combination list by combining the CA information of the cell sent by the network equipment and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that the network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported by the terminal to the network equipment are all CA combinations located in the CA frequency bands of the cell and the auxiliary cells thereof or supported by the cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cell can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the cell includes a cell that the terminal is preparing to access or is accessing.
In one possible design, the cell is a primary cell of the terminal. The secondary cell is configured for the primary cell by the network equipment. The CA information includes a CA frequency band in which the secondary cell is located or a first CA combination list supported by the primary cell.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: and the terminal receives a Radio Resource Control (RRC) connection establishment message sent by the network equipment, wherein the RRC connection establishment message carries CA information. The terminal sends a second CA combination list to the network device, including: and the terminal sends an RRC connection establishment completion message to the network equipment, wherein the RRC connection establishment completion message carries the second CA combination list. Or, the terminal sends a terminal capability information message to the network device, and the terminal capability information message carries the second CA combination list. Or the terminal sends a first message newly defined in the protocol to the network equipment, wherein the first message comprises the second CA combination list.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: a terminal receives an RRC connection establishment message sent by network equipment, wherein the RRC connection establishment message carries CA information of a cell; and after receiving the RRC connection establishment message sent by the network equipment, the terminal sends the second CA combination list to the network equipment through the subsequent terminal capability reporting process. In the process of reporting the terminal capacity, the network equipment sends a terminal capacity query request to the terminal, the terminal receives the terminal capacity query request sent by the network equipment, and the second CA combination list is sent to the network equipment through the terminal capacity information message. In the embodiment of the invention, in the initial network access stage, after the terminal completes the RRC connection process, the terminal can execute the terminal capability reporting process, and in the terminal capability reporting process, the terminal can report the self capability to the network equipment, wherein the reported capability comprises the second CA combination list. In this implementation, the network device actively queries the capabilities of the terminal.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: a terminal receives an RRC connection establishment message sent by network equipment, wherein the RRC connection establishment message carries CA information of a cell; after the terminal receives the RRC connection setup message sent by the network device, and before the terminal sends the second CA combination list to the network device, the method further includes: the terminal sends indication information to the network equipment, and the indication information is used for informing the network equipment of inquiring the capability of the terminal; the terminal receives a terminal capacity query request sent by the network equipment according to the indication information; the terminal sends a second CA combination list to the network device, including: and the terminal sends a terminal capacity information message to the network equipment according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. Compared with the former implementation mode, in the embodiment of the present invention, the terminal triggers the network device to query the capability of the terminal, so that the terminal can report the second CA combination list to the network device.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: and the terminal receives an RRC connection reestablishment message sent by the network equipment, wherein the RRC connection reestablishment message carries CA information of the cell. The terminal sends a second CA combination list to the network device, including: and the terminal sends an RRC connection reestablishment completion message to the network equipment, wherein the RRC connection reestablishment completion message carries the second CA combination list. Or the terminal sends a second message newly defined in the protocol to the network equipment, wherein the second message comprises a second CA combination list.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: and the terminal receives an RRC connection reestablishment message sent by the network equipment, wherein the RRC connection reestablishment message carries CA information of the cell. After the terminal receives the RRC connection reestablishment message sent by the network device, and before the terminal sends the second CA combination list to the network device, the method further includes: the terminal sends indication information to the network equipment, and the indication information is used for informing the network equipment of inquiring the capability of the terminal. And the terminal receives a terminal capability query request sent by the network equipment according to the indication information. The terminal sends a second CA combination list to the network device, including: and the terminal sends a terminal capacity information message to the network equipment according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: and the terminal receives a system message sent by the network equipment, wherein the system message carries the CA information of the cell. The terminal sends a second CA combination list to the network device, including: and the terminal sends an RRC connection establishment completion message to the network equipment, wherein the RRC connection establishment completion message carries the second CA combination list. Or, the terminal sends an RRC connection reestablishment complete message to the network device, where the RRC connection reestablishment complete message carries the second CA combination list. Or, the terminal sends a terminal capability information message to the network device, wherein the terminal capability information message includes the second CA combination list. Or, the terminal sends a third message newly defined by the protocol to the network device, wherein the third message comprises a second CA combination list; or, the terminal sends an RRC connection establishment request to a network device, where the RRC connection establishment request includes the second CA combination list; or, the terminal sends an RRC connection reestablishment request to the network device, where the RRC connection reestablishment request includes the second CA combination list.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: a terminal receives a system message sent by network equipment, wherein the system message carries CA information of a cell; after the terminal receives the system message sent by the network device, and before the terminal sends the second CA combination list to the network device, the method further includes: the terminal sends indication information to the network equipment, and the indication information is used for informing the network equipment of inquiring the capability of the terminal; the terminal receives a terminal capacity query request sent by the network equipment according to the indication information; the terminal sends a second CA combination list to the network device, including: and the terminal sends a terminal capacity information message to the network equipment according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the receiving, by the terminal, CA information of a cell sent by the network device includes: and the terminal receives a fifth message newly defined in a protocol sent by the network equipment, wherein the fifth message carries the CA information of the cell.
In a second aspect, an embodiment of the present invention provides another method for determining CA capability of a terminal, which is applied to a network device side. The method comprises the following steps: the network equipment sends CA information of the cell to the terminal, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell. And the network equipment receives a second CA combination list sent by the terminal, wherein the second CA combination list is determined by the terminal according to the CA information sent by the network equipment and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
By implementing the embodiment of the invention, the terminal determines the CA combination list by combining the CA information sent by the network equipment and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that the network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported by the terminal to the network equipment are all CA combinations located in the CA frequency bands of the cell and the auxiliary cells thereof or supported by the cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cell can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the cell includes a cell that the terminal is preparing to access or is accessing.
In one possible design, the cell is a primary cell of the terminal. The secondary cell is configured for the primary cell by the network equipment. The CA information includes a CA frequency band in which the secondary cell is located or a first CA combination list supported by the primary cell.
In one possible design, the network device sends CA information of the cell to the terminal, including: the network equipment sends a Radio Resource Control (RRC) connection establishment message to the terminal, wherein the RRC connection establishment message carries CA information of the cell. The network equipment receives a second CA combination list sent by the terminal, and the second CA combination list comprises the following components: and the network equipment receives an RRC connection establishment completion message sent by the terminal, wherein the RRC connection establishment completion message carries the second CA combination list. Or, the network device receives a terminal capability information message sent by the terminal, where the terminal capability information message carries the second CA combination list. Or, the network device receives a first message newly defined in a protocol sent by the terminal, where the first message includes the second CA combination list.
In one possible design, the network device sends CA information of the cell to the terminal, including: network equipment sends RRC connection establishment message to a terminal, wherein the RRC connection establishment message carries CA information of a cell; and after the network equipment sends the RRC connection establishment message to the terminal, acquiring a second CA combination list from the terminal through a subsequent terminal capability reporting process. In the process of reporting the terminal capability, the network equipment sends a terminal capability query request to the terminal and receives a terminal capability information message sent by the terminal, wherein the message comprises a second CA combination list. In the embodiment of the invention, in the initial network access stage, after the terminal completes the RRC connection process, the terminal can execute the terminal capability reporting process, and in the terminal capability reporting process, the terminal can report the self capability to the network equipment, wherein the reported capability comprises the second CA combination list. In this implementation, the network device actively queries the capabilities of the terminal.
In one possible design, the network device sends CA information of the cell to the terminal, including: network equipment sends RRC connection establishment message to a terminal, wherein the RRC connection establishment message carries CA information of a cell; after the network device sends the RRC connection setup message to the terminal, and before the network device receives the second CA combination list sent by the terminal, the method further includes: the network equipment receives indication information sent by the terminal, and the indication information is used for informing the network equipment of inquiring the capability of the terminal; the network equipment sends a terminal capability query request to the terminal according to the indication information; the network equipment receives a second CA combination list sent by the terminal, and the second CA combination list comprises the following components: and the network equipment receives a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list. Compared with the former implementation mode, in the embodiment of the present invention, the terminal triggers the network device to query the capability of the terminal, so that the terminal can report the second CA combination list to the network device.
In one possible design, the network device sends CA information of the cell to the terminal, including: and the network equipment sends an RRC connection reestablishment message to the terminal, wherein the RRC connection reestablishment message carries the CA information of the cell. The network equipment receives a second CA combination list sent by the terminal, and the second CA combination list comprises the following components: and the network equipment receives an RRC connection reestablishment completion message sent by the terminal, wherein the RRC connection reestablishment completion message carries the second CA combination list. Or, the network device receives a second message newly defined in a protocol sent by the terminal, where the second message includes the second CA combination list.
In one possible design, the network device sends CA information of the cell to the terminal, including: and the network equipment sends an RRC connection reestablishment message to the terminal, wherein the RRC connection reestablishment message carries the CA information of the cell. After the network device sends the RRC connection reestablishment message to the terminal, and before the network device receives the second CA combination list sent by the terminal, the method further includes: the network equipment receives indication information sent by the terminal, and the indication information is used for informing the network equipment of inquiring the capability of the terminal. The network equipment sends a terminal capability query request to the terminal. The network equipment receives a second CA combination list sent by the terminal, and the second CA combination list comprises the following components: and the network equipment receives a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the network device sends CA information of the cell to the terminal, including: the network equipment sends a system message to the terminal, and the system message carries CA information of the cell. The network equipment receives a second CA combination list sent by the terminal, and the second CA combination list comprises the following components: and the network equipment receives an RRC connection establishment completion message sent by the terminal, wherein the RRC connection establishment completion message carries the second CA combination list. Or, the network device receives an RRC connection reestablishment complete message sent by the terminal, where the RRC connection reestablishment complete message carries the second CA combination list. Or, the network device receives a terminal capability information message sent by the terminal, where the terminal capability information message includes the second CA combination list. Or, the network device receives a third message newly defined by a protocol sent by the terminal, wherein the third message comprises a second CA combination list; or, the network device receives an RRC connection establishment request sent by the terminal, where the RRC connection establishment request includes the second CA combination list; or, the network device receives an RRC connection reestablishment request sent by the terminal, where the RRC connection reestablishment request includes the second CA combination list.
In one possible design, the network device sends CA information of the cell to the terminal, including: the network equipment sends a system message to the terminal, wherein the system message carries CA information of a cell; after the network device sends the system message to the terminal, and before the network device receives the second CA combination list sent by the terminal, the method further includes: the network equipment receives indication information sent by the terminal, and the indication information is used for informing the network equipment of inquiring the capability of the terminal; the network equipment sends a terminal capability query request to the terminal according to the indication information; the network equipment receives a second CA combination list sent by the terminal, and the second CA combination list comprises the following components: and the network equipment receives a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the network device sends CA information of the cell to the terminal, including: and the network equipment sends a fifth message newly defined in the protocol to the terminal, wherein the fifth message carries the CA information of the cell.
In a third aspect, an embodiment of the present invention provides another method for determining CA capability of a terminal, which is applied to a terminal side. The method comprises the following steps: the terminal receives CA information of a second cell sent by a first cell through first network equipment, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the second cell is located or a first CA combination list supported by the second cell. And the terminal sends a second CA combination list to the second network equipment, wherein the second CA combination list is determined by the terminal according to the CA information of the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the switched second cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In a possible design, the second cell is a primary cell after the terminal is handed over. The secondary cell is configured for the primary cell by the network equipment. The CA information includes a CA frequency band in which the secondary cell is located or a first CA combination list supported by the primary cell.
In a possible design, the first network device and the second network device are different network devices, in which case, the embodiment of the present invention relates to cell handover across network devices.
In a possible design, the first network device and the second network device are the same network device, and the embodiment of the present invention relates to cell handover in the same network device.
In one possible design, the receiving, by the terminal, CA information of the second cell sent by the first cell through the first network device includes: and the terminal receives an RRC connection reconfiguration message sent by the first cell through the first network equipment, wherein the RRC connection reconfiguration message carries the CA information of the second cell. The terminal sends a second CA combination list to the second network device, including: and the terminal sends an RRC connection reconfiguration finishing message to the second network equipment, wherein the RRC connection reconfiguration finishing message carries the second CA combination list. Or, the terminal sends a fourth message newly defined in the protocol to the second network device, where the fourth message carries the second CA combination list.
In one possible design, the receiving, by the terminal, CA information of the second cell sent by the first cell through the first network device includes: and the terminal receives an RRC connection reconfiguration message sent by the first cell through the first network equipment, wherein the RRC connection reconfiguration message carries the CA information of the second cell. After the terminal receives the RRC connection reconfiguration message sent by the first network device, before the terminal sends the second CA combination list to the second network device, the method further includes: and the terminal sends indication information to the second network equipment, wherein the indication information is used for informing the second network equipment of inquiring the capability of the terminal. And the terminal receives a terminal capability query request sent by the second network equipment according to the indication information. The terminal sends a second CA combination list to the second network device, including: and the terminal sends a terminal capacity information message to the second network equipment according to the terminal capacity query request, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In a fourth aspect, an embodiment of the present invention provides another method for determining CA capability of a terminal, which is applied to a first network device side. The method comprises the following steps: the first network equipment determines CA information of the second cell, wherein the CA information comprises a CA frequency band list where the secondary cell of the second cell is located or a first CA combination list supported by the second cell. The first network device sends CA information to the terminal on the first cell. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the switched second cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In a possible design, the second cell is a primary cell after the terminal is handed over. The secondary cell is configured for the primary cell by the network equipment. The CA information includes a CA frequency band in which the secondary cell is located or a first CA combination list supported by the primary cell.
In one possible design, the sending, by the first network device, the CA information of the second cell to the terminal includes: and the first network equipment sends an RRC connection reconfiguration message to the terminal, wherein the RRC connection reconfiguration message carries the CA information of the second cell.
In a fifth aspect, an embodiment of the present invention provides another method for determining CA capability of a terminal, which is applied to a second network device side. The method comprises the following steps: and the second network equipment receives a second CA combination list sent by the terminal, wherein the second CA combination list is determined by the terminal according to the CA information of the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are the CA combinations reported according to the actual configuration condition of the switched second cell and can improve the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In a possible design, the second cell is a primary cell after the terminal is handed over. The secondary cell is configured for the primary cell by the network equipment. The CA information includes a CA frequency band in which the secondary cell is located or a first CA combination list supported by the primary cell.
In one possible design, the second network device receives a second CA combination list sent by the terminal, and includes: and the second network equipment receives an RRC connection reconfiguration finishing message sent by the terminal, wherein the RRC connection reconfiguration finishing message carries the second CA combination list. Or, the second network device receives a fourth message newly defined in a protocol sent by the terminal, where the fourth message carries the second CA combination list.
In a possible design, before the second network device receives the second CA combination list sent by the terminal, the method further includes: and the second network equipment receives the indication information sent by the terminal, wherein the indication information is used for informing the second network equipment of inquiring the capability of the terminal. And the second network equipment sends a terminal capability query request to the terminal according to the indication information. The second network equipment receives a second CA combination list sent by the terminal, and the second CA combination list comprises the following components: and the second network equipment receives a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list.
It should be noted that the above-mentioned "first message", "second message", "third message", "fourth message", "fifth message", etc. are only for distinguishing, and in practical applications, the several messages may be the same message.
In a sixth aspect, an embodiment of the present invention provides a terminal, including: a receiving unit, configured to receive CA information of a cell sent by a network device, where the CA information includes a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell; and the sending unit is used for sending a second CA combination list to the network equipment, wherein the second CA combination list is determined by the terminal according to the CA information sent by the network equipment and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
In one possible design, the cell includes a cell that the terminal is preparing to access or is accessing.
In one possible design, the receiving unit is specifically configured to: and receiving a Radio Resource Control (RRC) connection establishment message sent by the network equipment, wherein the RRC connection establishment message carries CA information. The sending unit is specifically configured to: sending an RRC connection establishment completion message to the network equipment, wherein the RRC connection establishment completion message carries a second CA combination list; or, sending a terminal capability information message to the network device, wherein the terminal capability information message carries a second CA combination list; or sending a first message newly defined in the protocol to the network equipment, wherein the first message comprises the second CA combination list.
In one possible design, the receiving unit is specifically configured to: receiving an RRC connection establishment message sent by network equipment, wherein the RRC connection establishment message carries CA information of a cell; the sending unit is further configured to send, after the receiving unit receives the RRC connection setup message sent by the network device, indication information to the network device before the sending unit sends the second CA combination list to the network device, where the indication information is used to notify the network device of the capability of the terminal; the receiving unit is further configured to receive a terminal capability query request sent by the network device according to the indication information; the sending unit is configured to send a second CA combination list to the network device, and specifically: and sending a terminal capacity information message to the network equipment according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. Compared with the former implementation mode, in the embodiment of the present invention, the terminal triggers the network device to query the capability of the terminal, so that the terminal can report the second CA combination list to the network device.
In one possible design, the receiving unit is configured to receive CA information of a cell sent by a network device, and includes: and receiving an RRC connection reestablishment message sent by the network equipment, wherein the RRC connection reestablishment message carries CA information of the cell. The sending unit is configured to send the second CA combination list to the network device, and includes: sending an RRC connection reestablishment completion message to the network equipment, wherein the RRC connection reestablishment completion message carries a second CA combination list; or sending a second message newly defined in the protocol to the network equipment, wherein the second message comprises a second CA combination list.
In one possible design, the receiving unit is configured to receive CA information of a cell sent by a network device, and includes: and receiving an RRC connection reestablishment message sent by the network equipment, wherein the RRC connection reestablishment message carries CA information of the cell. The sending unit is further configured to send, after the receiving unit receives the RRC connection reestablishment message sent by the network device, indication information to the network device before the sending unit sends the second CA combination list to the network device, where the indication information is used to notify the network device of the capability of the terminal. The receiving unit is further configured to receive a terminal capability query request sent by the network device according to the indication information. The sending unit is configured to send the second CA combination list to the network device, and includes: and sending a terminal capacity information message to the network equipment according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the receiving unit is configured to receive CA information of a cell sent by a network device, and includes: and receiving a system message sent by the network equipment, wherein the system message carries the CA information of the cell. The sending unit is configured to send the second CA combination list to the network device, and includes: sending an RRC connection establishment completion message to the network equipment, wherein the RRC connection establishment completion message carries a second CA combination list; or, sending an RRC connection reestablishment complete message to the network device, where the RRC connection reestablishment complete message carries the second CA combination list; or, sending a terminal capability information message to the network device, wherein the terminal capability information message comprises a second CA combination list; or, sending a third message newly defined by the protocol to the network device, wherein the third message comprises a second CA combination list; or, sending an RRC connection establishment request to a network device, where the RRC connection establishment request includes the second CA combination list; or, sending an RRC connection reestablishment request to a network device, where the RRC connection reestablishment request includes the second CA combination list.
In one possible design, the receiving unit is configured to receive CA information of a cell sent by a network device, and includes: receiving a system message sent by network equipment, wherein the system message carries CA information of a cell; the sending unit is further configured to send, after the receiving unit receives the system message sent by the network device and before the sending unit sends the second CA combination list to the network device, indication information to the network device, where the indication information is used to notify the network device of the capability of the query terminal; the receiving unit is further configured to receive a terminal capability query request sent by the network device according to the indication information; the sending unit is configured to send the second CA combination list to the network device, and includes: and sending a terminal capacity information message to the network equipment according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the receiving unit is configured to receive CA information of a cell sent by a network device, and includes: and receiving a fifth message newly defined in a protocol sent by the network equipment, wherein the fifth message carries the CA information of the cell.
In a seventh aspect, an embodiment of the present invention provides a network device, including: a sending unit, configured to send CA information of a cell to a terminal, where the CA information includes a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell; and the receiving unit is used for receiving a second CA combination list sent by the terminal, wherein the second CA combination list is determined by the terminal according to the CA information sent by the network equipment and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
In one possible design, the cell includes a cell that the terminal is preparing to access or is accessing.
In one possible design, the sending unit is configured to send CA information of a cell to a terminal, and includes: and sending a Radio Resource Control (RRC) connection establishment message to the terminal, wherein the RRC connection establishment message carries the CA information of the cell. The receiving unit is configured to receive a second CA combination list sent by a terminal, and includes: receiving an RRC connection establishment completion message sent by the terminal, wherein the RRC connection establishment completion message carries a second CA combination list; or receiving a terminal capability information message sent by the terminal, wherein the terminal capability information message carries a second CA combination list; or receiving a first message newly defined in a protocol sent by the terminal, wherein the first message comprises a second CA combination list.
In one possible design, a sending unit, configured to send CA information of a cell to a terminal, includes: sending RRC connection establishment information to a terminal, wherein the RRC connection establishment information carries CA information of a cell; the receiving unit is further configured to receive indication information sent by the terminal after the sending unit sends the RRC connection setup message to the terminal and before the receiving unit receives the second CA combination list sent by the terminal, where the indication information is used to notify the network device of querying a capability of the terminal; the sending unit is also used for sending a terminal capability query request to the terminal according to the indication information; the receiving unit is configured to receive a second CA combination list sent by a terminal, and includes: and receiving a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list.
In one possible design, a sending unit, configured to send CA information of a cell to a terminal, includes: and sending an RRC connection reestablishment message to the terminal, wherein the RRC connection reestablishment message carries the CA information of the cell. A receiving unit, configured to receive a second CA combination list sent by a terminal, where the receiving unit includes: receiving an RRC connection reestablishment completion message sent by the terminal, wherein the RRC connection reestablishment completion message carries a second CA combination list; or receiving a second message newly defined in a protocol sent by the terminal, wherein the second message comprises a second CA combination list.
In one possible design, a sending unit, configured to send CA information of a cell to a terminal, includes: and sending an RRC connection reestablishment message to the terminal, wherein the RRC connection reestablishment message carries the CA information of the cell. The receiving unit is further configured to receive indication information sent by the terminal after the sending unit sends the RRC connection reestablishment message to the terminal and before the receiving unit receives the second CA combination list sent by the terminal, where the indication information is used to notify the network device of querying the capability of the terminal. The sending unit is further configured to send a terminal capability query request to the terminal. The receiving unit is configured to receive a second CA combination list sent by a terminal, and includes: and receiving a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the sending unit is configured to send CA information of a cell to a terminal, and includes: and sending a system message to the terminal, wherein the system message carries the CA information of the cell. The receiving unit is configured to receive a second CA combination list sent by a terminal, and includes: receiving an RRC connection establishment completion message sent by the terminal, wherein the RRC connection establishment completion message carries a second CA combination list; or receiving an RRC connection reestablishment completion message sent by the terminal, wherein the RRC connection reestablishment completion message carries a second CA combination list; or, receiving a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list; or receiving a third message newly defined by a protocol sent by the terminal, wherein the third message comprises a second CA combination list; or receiving an RRC connection establishment request sent by the terminal, where the RRC connection establishment request includes the second CA combination list; or receiving an RRC connection reestablishment request sent by the terminal, where the RRC connection reestablishment request includes the second CA combination list.
In one possible design, the sending unit is configured to send CA information of a cell to a terminal, and includes: sending a system message to a terminal, wherein the system message carries CA information of a cell; the receiving unit is further configured to receive indication information sent by the terminal after the sending unit sends the system message to the terminal and before the receiving unit receives the second CA combination list sent by the terminal, where the indication information is used to notify the network device of the capability of the terminal; the sending unit is further used for sending a terminal capability query request to the terminal according to the indication information; the receiving unit is configured to receive a second CA combination list sent by a terminal, and includes: and receiving a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the network device sends CA information of the cell to the terminal, including: and the network equipment sends a fifth message newly defined in the protocol to the terminal, wherein the fifth message carries the CA information of the cell.
In an eighth aspect, an embodiment of the present invention provides a terminal, including: a receiving unit, configured to receive CA information of a second cell sent by a first cell through a first network device, where the CA information includes a CA frequency band list where an auxiliary cell of the second cell is located or a first CA combination list supported by the second cell; and the sending unit is used for sending a second CA combination list to the second network equipment, wherein the second CA combination list is determined by the terminal according to the CA information of the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the switched second cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In a possible design, the first network device and the second network device are different network devices, in which case, the embodiment of the present invention relates to cell handover across network devices.
In a possible design, the first network device and the second network device are the same network device, and the embodiment of the present invention relates to cell handover in the same network device.
In one possible design, the receiving unit is configured to receive CA information of a second cell sent by a first cell through a first network device, and includes: and receiving an RRC connection reconfiguration message sent by the first cell through the first network equipment, wherein the RRC connection reconfiguration message carries the CA information of the second cell. The sending unit, configured to send the second CA combination list to the second network device, includes: sending an RRC connection reconfiguration complete message to the second network equipment, wherein the RRC connection reconfiguration complete message carries a second CA combination list; or sending a fourth message newly defined in the protocol to the second network device, where the fourth message carries the second CA combination list.
In one possible design, the receiving unit is configured to receive CA information of a second cell sent by a first cell through a first network device, and includes: and receiving an RRC connection reconfiguration message sent by the first cell through the first network equipment, wherein the RRC connection reconfiguration message carries the CA information of the second cell. The sending unit is further configured to send, after the receiving unit receives the RRC connection reconfiguration message sent by the first network device, indication information to the second network device before the sending unit sends the second CA combination list to the second network device, where the indication information is used to notify the second network device of the capability of the terminal. The receiving unit is further configured to receive a terminal capability query request sent by the second network device according to the indication information. The sending unit, configured to send the second CA combination list to the second network device, includes: and sending a terminal capacity information message to the second network equipment according to the terminal capacity query request, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In a ninth aspect, an embodiment of the present invention provides a network device, where the network device is a first network device, and the first network device includes: a determining unit, configured to determine CA information of the second cell, where the CA information includes a CA frequency band list where an auxiliary cell of the second cell is located or a first CA combination list supported by the second cell; and the sending unit is used for sending the CA information to the terminal on the first cell. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the switched second cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In one possible design, the sending unit is configured to send CA information of the second cell to the terminal, and includes: and sending an RRC connection reconfiguration message to the terminal, wherein the RRC connection reconfiguration message carries the CA information of the second cell.
In a tenth aspect, an embodiment of the present invention provides a network device, where the network device is a second network device, and the second network device includes: and the receiving unit is used for receiving a second CA combination list sent by the terminal, wherein the second CA combination list is determined by the terminal according to the CA information of the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal.
By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are the CA combinations reported according to the actual configuration condition of the switched second cell and can improve the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In one possible design, the receiving unit is configured to receive a second CA combination list sent by the terminal, and includes: receiving an RRC connection reconfiguration completion message sent by the terminal, wherein the RRC connection reconfiguration completion message carries a second CA combination list; or receiving a fourth message newly defined in a protocol sent by the terminal, wherein the fourth message carries the second CA combination list.
In a possible design, the receiving unit is further configured to receive, before the second CA combination list sent by the receiving terminal, indication information sent by the receiving terminal, where the indication information is used to notify the second network device of querying the capability of the terminal. The second network device further comprises a sending unit, and the sending unit is used for sending a terminal capability query request to the terminal according to the indication information. The receiving unit is configured to receive a second CA combination list sent by a terminal, and includes: and receiving a terminal capability information message sent by the terminal, wherein the terminal capability information message comprises a second CA combination list.
It should be noted that the above-mentioned "first message", "second message", "third message", "fourth message", "fifth message", etc. are only for distinguishing, and in practical applications, the several messages may be the same message.
In an eleventh aspect, an embodiment of the present invention provides a terminal, including: a processor, a memory, and a transceiver, the processor, the memory, and the transceiver being interconnected, the memory for storing program code, the processor for invoking the program code in the memory to perform the following operations: and receiving the CA information of the cell sent by the network equipment through the transceiver, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell. And sending a second CA combination list to the network equipment through the transceiver, wherein the second CA combination list is determined by the terminal according to the CA information sent by the network equipment and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
In one possible design, the cell includes a cell that the terminal is preparing to access or is accessing.
In one possible design, the processor receives, through the transceiver, CA information of a cell transmitted by the network device, including: and receiving a Radio Resource Control (RRC) connection establishment message sent by the network equipment through the transceiver, wherein the RRC connection establishment message carries CA information. The processor sends a second CA combination list to the network device via the transceiver, comprising: sending an RRC connection establishment completion message to the network equipment through the transceiver, wherein the RRC connection establishment completion message carries a second CA combination list; or, sending a terminal capability information message to the network device through the transceiver, wherein the terminal capability information message carries a second CA combination list; or, sending a first message newly defined in the protocol to the network device through the transceiver, where the first message includes the second CA combination list.
In one possible design, the processor receives, through the transceiver, CA information of a cell transmitted by the network device, including: receiving an RRC connection establishment message sent by the network equipment through the transceiver, wherein the RRC connection establishment message carries CA information of a cell; after the processor receives the RRC connection setup message sent by the network device through the transceiver and before the processor sends the second CA combination list to the network device through the transceiver, the processor is further configured to: sending indication information to the network equipment through the transceiver, wherein the indication information is used for informing the network equipment of inquiring the capability of the terminal; receiving a terminal capability query request sent by the network equipment according to the indication information through the transceiver; the processor sends a second CA combination list to the network device via the transceiver, comprising: and sending a terminal capacity information message to the network equipment through the transceiver according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list.
In one possible design, the processor receives, through the transceiver, CA information of a cell transmitted by the network device, including: and receiving an RRC connection reestablishment message sent by the network equipment through the transceiver, wherein the RRC connection reestablishment message carries CA information of the cell. The processor sends a second CA combination list to the network device via the transceiver, comprising: sending an RRC connection reestablishment completion message to the network equipment through the transceiver, wherein the RRC connection reestablishment completion message carries a second CA combination list; or sending a second message newly defined in the protocol to the network device through the transceiver, wherein the second message comprises a second CA combination list.
In one possible design, the processor receives, through the transceiver, CA information of a cell transmitted by the network device, including: and receiving an RRC connection reestablishment message sent by the network equipment through the transceiver, wherein the RRC connection reestablishment message carries CA information of the cell. After the processor receives the RRC connection reestablishment message sent by the network device through the transceiver and before the processor sends the second CA combination list to the network device through the transceiver, the processor is further configured to: and sending indication information to the network equipment through the transceiver, wherein the indication information is used for informing the network equipment of inquiring the capability of the terminal. And the processor receives a terminal capability query request sent by the network equipment according to the indication information through the transceiver. The processor sends a second CA combination list to the network device via the transceiver, comprising: and sending a terminal capacity information message to the network equipment through the transceiver according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the processor receives, through the transceiver, CA information of a cell transmitted by the network device, including: and receiving a system message sent by the network equipment through the transceiver, wherein the system message carries CA information of the cell. The processor sends a second CA combination list to the network device via the transceiver, comprising: sending an RRC connection establishment completion message to the network equipment through the transceiver, wherein the RRC connection establishment completion message carries a second CA combination list; or, sending an RRC connection reestablishment complete message to the network device through the transceiver, where the RRC connection reestablishment complete message carries the second CA combination list; or, sending a terminal capability information message to the network device through the transceiver, wherein the terminal capability information message comprises a second CA combination list; or, a third message newly defined by the protocol is sent to the network device through the transceiver, and the third message comprises a second CA combination list; or, sending an RRC connection establishment request to a network device through the transceiver, where the RRC connection establishment request includes the second CA combination list; or, sending an RRC connection reestablishment request to a network device through the transceiver, where the RRC connection reestablishment request includes the second CA combination list.
In one possible design, the processor receives, through the transceiver, CA information of a cell transmitted by the network device, including: receiving a system message sent by the network equipment through the transceiver, wherein the system message carries CA information of a cell; after the processor receives the system message sent by the network device through the transceiver and before the processor sends the second CA combination list to the network device through the transceiver, the processor is further configured to: sending indication information to the network equipment through the transceiver, wherein the indication information is used for informing the network equipment of inquiring the capability of the terminal; receiving a terminal capability query request sent by the network equipment according to the indication information through the transceiver; the processor sends a second CA combination list to the network device via the transceiver, comprising: and sending a terminal capacity information message to the network equipment through the transceiver according to the terminal capacity query request sent by the network equipment, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the processor receives, through the transceiver, CA information of a cell transmitted by the network device, including: and receiving a fifth message newly defined in a protocol sent by the network equipment through the transceiver, wherein the fifth message carries the CA information of the cell.
In a twelfth aspect, an embodiment of the present invention provides a network device, a processor, a memory, and a transceiver, where the processor, the memory, and the transceiver are connected to each other, the memory is used to store program codes, and the processor is used to call the program codes in the memory to perform the following operations: transmitting CA information of a cell to a terminal through the transceiver, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell; and receiving a second CA combination list sent by the terminal through the transceiver, wherein the second CA combination list is determined by the terminal according to the CA information sent by the network equipment and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
In one possible design, the cell includes a cell that the terminal is preparing to access or is accessing.
In one possible design, the processor sends CA information of a cell to the terminal through the transceiver, including: and sending a Radio Resource Control (RRC) connection establishment message to the terminal through the transceiver, wherein the RRC connection establishment message carries CA information of the cell. The processor receives a second CA combination list sent by the terminal through the transceiver, and the second CA combination list comprises: receiving an RRC connection establishment completion message sent by the terminal through the transceiver, wherein the RRC connection establishment completion message carries a second CA combination list; or, receiving a terminal capability information message sent by the terminal through the transceiver, wherein the terminal capability information message carries a second CA combination list; or, receiving a first message newly defined in a protocol sent by the terminal through the transceiver, where the first message includes a second CA combination list.
In one possible design, the processor sends CA information of a cell to the terminal through the transceiver, including: sending an RRC connection establishment message to the terminal through the transceiver, wherein the RRC connection establishment message carries CA information of the cell; after the processor sends the RRC connection setup message to the terminal through the transceiver and before the processor receives the second CA combination list sent by the terminal through the transceiver, the processor is further configured to: receiving indication information sent by a terminal through the transceiver, wherein the indication information is used for informing network equipment of inquiring the capability of the terminal; sending a terminal capability query request to the terminal through the transceiver according to the indication information; the processor receives a second CA combination list sent by the terminal through the transceiver, and the second CA combination list comprises: and receiving a terminal capability information message sent by the terminal through the transceiver, wherein the terminal capability information message comprises a second CA combination list.
In one possible design, the processor sends CA information of a cell to the terminal through the transceiver, including: and sending an RRC connection reestablishment message to the terminal through the transceiver, wherein the RRC connection reestablishment message carries CA information of the cell. The processor receives a second CA combination list sent by the terminal through the transceiver, and the second CA combination list comprises: receiving an RRC connection reestablishment completion message sent by the terminal through the transceiver, wherein the RRC connection reestablishment completion message carries a second CA combination list; or, receiving a second message newly defined in a protocol sent by the terminal through the transceiver, where the second message includes a second CA combination list.
In one possible design, the processor sends CA information of a cell to the terminal through the transceiver, including: and sending an RRC connection reestablishment message to the terminal through the transceiver, wherein the RRC connection reestablishment message carries CA information of the cell. After the processor sends the RRC connection reestablishment message to the terminal through the transceiver and before the processor receives the second CA combination list sent by the terminal through the transceiver, the processor is further configured to: and receiving indication information sent by the terminal through the transceiver, wherein the indication information is used for informing the network equipment of inquiring the capability of the terminal. And the processor sends a terminal capability query request to the terminal through the transceiver. The processor receives a second CA combination list sent by the terminal through the transceiver, and the second CA combination list comprises: and receiving a terminal capability information message sent by the terminal through the transceiver, wherein the terminal capability information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the processor sends CA information of a cell to the terminal through the transceiver, including: and sending a system message to the terminal through the transceiver, wherein the system message carries the CA information of the cell. The processor receives a second CA combination list sent by the terminal through the transceiver, and the second CA combination list comprises: receiving an RRC connection establishment completion message sent by the terminal through the transceiver, wherein the RRC connection establishment completion message carries a second CA combination list; or, receiving an RRC connection reestablishment complete message sent by the terminal through the transceiver, where the RRC connection reestablishment complete message carries the second CA combination list; or, receiving a terminal capability information message sent by the terminal through the transceiver, wherein the terminal capability information message comprises a second CA combination list; or, receiving a third message newly defined by a protocol sent by the terminal through the transceiver, wherein the third message comprises a second CA combination list; or, receiving, by the transceiver, an RRC connection establishment request sent by the terminal, where the RRC connection establishment request includes the second CA combination list; or, receiving, by the transceiver, an RRC connection reestablishment request sent by the terminal, where the RRC connection reestablishment request includes the second CA combination list.
In one possible design, the processor sends CA information of a cell to the terminal through the transceiver, including: sending a system message to the terminal through the transceiver, wherein the system message carries CA information of the cell; after the processor sends the system message to the terminal through the transceiver and before the processor receives a second CA combination list sent by the terminal through the transceiver, the processor is further configured to: receiving indication information sent by a terminal through the transceiver, wherein the indication information is used for informing network equipment of inquiring the capability of the terminal; sending a terminal capacity query request to a terminal through the transceiver according to the indication information; the processor receives a second CA combination list sent by the terminal through the transceiver, and the second CA combination list comprises: and receiving a terminal capability information message sent by the terminal through the transceiver, wherein the terminal capability information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In one possible design, the processor sends CA information of a cell to the terminal through the transceiver, including: and sending a fifth message newly defined in a protocol to the terminal through the transceiver, wherein the fifth message carries the CA information of the cell.
In a thirteenth aspect, an embodiment of the present invention provides a terminal, including: a processor, a memory, and a transceiver, the processor, the memory, and the transceiver being interconnected, the memory for storing program code, the processor for invoking the program code in the memory to perform the following operations: and receiving, by the transceiver, CA information of the second cell sent by the first cell through the first network device, where the CA information includes a CA frequency band list in which a secondary cell of the second cell is located or a first CA combination list supported by the second cell. And sending a second CA combination list to the second network equipment through the transceiver, wherein the second CA combination list is determined by the terminal according to the CA information of the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the switched second cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In a possible design, the first network device and the second network device are different network devices, in which case, the embodiment of the present invention relates to cell handover across network devices.
In a possible design, the first network device and the second network device are the same network device, and the embodiment of the present invention relates to cell handover in the same network device.
In one possible design, the processor receives, through the transceiver, CA information of a second cell transmitted by a first cell through a first network device, including: and receiving an RRC connection reconfiguration message sent by the first cell through the first network equipment through the transceiver, wherein the RRC connection reconfiguration message carries CA information of the second cell. The processor sends a second CA combination list to a second network device via the transceiver, comprising: sending an RRC connection reconfiguration complete message to second network equipment through the transceiver, wherein the RRC connection reconfiguration complete message carries a second CA combination list; or, a fourth message newly defined in the protocol is sent to the second network device through the transceiver, where the fourth message carries the second CA combination list.
In one possible design, the processor receives, through the transceiver, CA information of a second cell transmitted by a first cell through a first network device, including: and receiving an RRC connection reconfiguration message sent by the first cell through the first network equipment through the transceiver, wherein the RRC connection reconfiguration message carries CA information of the second cell. After the processor receives the RRC connection reconfiguration message sent by the first network device through the transceiver, and before the processor sends the second CA combination list to the second network device through the transceiver, the processor is further configured to: sending indication information to the second network equipment through the transceiver, wherein the indication information is used for informing the second network equipment of inquiring the capability of the terminal; and receiving a terminal capability query request sent by the second network equipment according to the indication information through the transceiver. The processor sends a second CA combination list to a second network device via the transceiver, comprising: and sending a terminal capacity information message to the second network equipment through the transceiver according to the terminal capacity query request, wherein the terminal capacity information message comprises a second CA combination list. In the embodiment of the invention, the terminal triggers the network equipment to inquire the capability of the terminal so that the terminal can conveniently report the second CA combination list to the network equipment.
In a fourteenth aspect, an embodiment of the present invention provides a network device, where the network device is a first network device, and the first network device includes: a processor, a memory, and a transceiver, the processor, the memory, and the transceiver being interconnected, the memory for storing program code, the processor for invoking the program code in the memory to perform the following operations: and determining the CA information of the second cell, wherein the CA information comprises a CA frequency band list where the secondary cell of the second cell is located or a first CA combination list supported by the second cell. CA information is transmitted to the terminal on the first cell through the transceiver. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are reported according to the actual configuration condition of the switched second cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In one possible design, the processor may send, to the terminal through the transceiver, CA information of the second cell, including: and sending an RRC connection reconfiguration message to the terminal through the transceiver, wherein the RRC connection reconfiguration message carries the CA information of the second cell.
In a fifteenth aspect, an embodiment of the present invention provides a network device, where the network device is a second network device, and the second network device includes: a processor, a memory, and a transceiver, the processor, the memory, and the transceiver being interconnected, the memory for storing program code, the processor for invoking the program code in the memory to perform the following operations: and receiving a second CA combination list sent by the terminal through the transceiver, wherein the second CA combination list is determined by the terminal according to the CA information of the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal. By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA information of the second cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported to the network equipment by the terminal are all CA combinations located in the switched second cell and the CA frequency band where the auxiliary cell is located or the CA combinations supported by the second cell, and the CA combinations reported by the terminal are the CA combinations reported according to the actual configuration condition of the switched second cell and can improve the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
In one possible design, the first cell is a cell where the terminal is currently located, and the second cell is a cell to which the terminal is to be handed over.
In one possible design, the processor receives, via the transceiver, a second CA combination list transmitted by the terminal, including: receiving an RRC connection reconfiguration completion message sent by the terminal through the transceiver, wherein the RRC connection reconfiguration completion message carries a second CA combination list; or, receiving a fourth message newly defined in a protocol sent by the terminal through the transceiver, where the fourth message carries the second CA combination list.
In one possible design, before the processor receives the second CA combination list sent by the terminal through the transceiver, the processor is further configured to: receiving indication information sent by the terminal through the transceiver, wherein the indication information is used for informing the second network equipment of inquiring the capability of the terminal; and sending a terminal capability query request to the terminal through the transceiver according to the indication information. The processor receives a second CA combination list sent by the terminal through the transceiver, and the second CA combination list comprises: and receiving a terminal capability information message sent by the terminal through the transceiver, wherein the terminal capability information message comprises a second CA combination list.
In a sixteenth aspect, an embodiment of the present invention provides a communication system, where the communication system includes: a terminal and a network device. Wherein the terminal may be the terminal described in the sixth aspect or the eleventh aspect above. The network device may be the network device described in the seventh or twelfth aspect above.
In a seventeenth aspect, an embodiment of the present invention provides another communication system, where the communication system includes: the terminal, the first network equipment and the second network equipment. Wherein the terminal may be the terminal described in the above eighth aspect or thirteenth aspect. The first network device may be the network device described in the ninth aspect or the fourteenth aspect above. The second network device may be the network device described in the above tenth or fifteenth aspect.
In an eighteenth aspect, an embodiment of the present invention provides a communication chip, where the communication chip may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is operable to call from the memory a program implementing the method for determining the capability of the terminal CA provided in the first aspect, and execute the instructions contained in the program. The interface may be configured to output a data processing result of the processor.
In a nineteenth aspect, an embodiment of the present invention provides another communication chip, where the communication chip may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is operable to call from the memory a program implementing the method for determining the capability of the terminal CA provided by the second aspect, and execute the instructions contained in the program. The interface may be configured to output a data processing result of the processor.
In a twentieth aspect, an embodiment of the present invention provides another communication chip, where the communication chip may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is operable to call from the memory an implementation program of the method for determining capability of the terminal CA provided in the third aspect, and execute the instructions contained in the program. The interface may be configured to output a data processing result of the processor.
In a twenty-first aspect, an embodiment of the present invention provides another communication chip, where the communication chip may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is operable to call from the memory an implementation program of the method for determining capability of the terminal CA provided in the fourth aspect, and execute the instructions contained in the program. The interface may be configured to output a data processing result of the processor.
In a twenty-second aspect, an embodiment of the present invention provides another communication chip, where the communication chip may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is operable to call from the memory an implementation program of the method for determining the capability of the terminal CA provided by the fifth aspect, and execute the instructions contained in the program. The interface may be configured to output a data processing result of the processor.
In a twenty-third aspect, an embodiment of the present invention provides a computer-readable storage medium, which has instructions stored thereon, and when the instructions are executed on a processor, cause the processor to perform the method for determining terminal CA capability described in the above-mentioned first aspect, or perform the method for determining terminal CA capability described in the above-mentioned second aspect, or perform the method for determining terminal CA capability described in the above-mentioned third aspect, or perform the method for determining terminal CA capability described in the above-mentioned fourth aspect, or perform the method for determining terminal CA capability described in the above-mentioned fifth aspect.
In a twenty-fourth aspect, an embodiment of the present invention provides a computer program product containing instructions, which when run on a processor, causes the processor to perform the method for determining terminal CA capability described in the above first aspect, or perform the method for determining terminal CA capability described in the above second aspect, or perform the method for determining terminal CA capability described in the above third aspect, or perform the method for determining terminal CA capability described in the above fourth aspect, or perform the method for determining terminal CA capability described in the above fifth aspect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic diagram of an architecture of a wireless communication system according to an embodiment of the present invention;
fig. 2A is a schematic diagram of discontinuous multi-carrier aggregation according to an embodiment of the present invention;
fig. 2B is a partial flowchart of an RRC connection establishment procedure according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for determining CA capability of a terminal according to an embodiment of the present invention;
fig. 3A is a partial flowchart of an RRC connection reestablishment procedure according to an embodiment of the present invention;
fig. 4 is a flowchart of another method for determining carrier aggregation capability of a terminal according to an embodiment of the present invention;
fig. 5 is a flowchart of another method for determining carrier aggregation capability of a terminal according to an embodiment of the present invention;
fig. 5A is a partial flowchart of an RRC connection reconfiguration procedure according to an embodiment of the present invention;
fig. 6 is a flowchart of another method for determining carrier aggregation capability of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a first embodiment of a process for determining CA capability of a terminal according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a second embodiment of a process for determining CA capability of a terminal according to the second embodiment of the present invention;
fig. 9 is a schematic diagram of a third embodiment of a process for determining CA capability of a terminal according to the third embodiment of the present invention;
fig. 10 is a schematic diagram of a fourth embodiment of a process for determining CA capability of a terminal according to the present invention;
fig. 11 is a schematic diagram of a fifth embodiment of a process for determining CA capability of a terminal according to an embodiment of the present invention;
fig. 12 is a schematic diagram of a sixth embodiment of a process for determining CA capability of a terminal according to the present invention;
fig. 13 is a diagram of a seventh embodiment of a process for determining CA capability of a terminal according to an embodiment of the present invention;
fig. 14 is a schematic diagram of an eighth embodiment of a process for determining CA capability of a terminal according to an embodiment of the present invention;
fig. 15 is a schematic logical structure diagram of a terminal according to an embodiment of the present invention;
fig. 16 is a schematic hardware structure diagram of a terminal according to an embodiment of the present invention;
fig. 17 is a schematic logical structure diagram of a network device according to an embodiment of the present invention;
fig. 18 is a schematic hardware structure diagram of a network device according to an embodiment of the present invention;
fig. 19 is a schematic structural diagram of a communication chip according to an embodiment of the present invention;
fig. 20 is a schematic structural diagram of another communication chip according to an embodiment of the present invention.
Detailed Description
The terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments herein only and is not intended to be limiting of the application.
To facilitate understanding of the embodiments of the present application, a wireless communication system related to the embodiments of the present application will be first described.
Referring to fig. 1, fig. 1 illustrates a wireless communication system according to an embodiment of the present application. The wireless communication system 100 may operate in a licensed frequency band and may also operate in an unlicensed frequency band. The wireless communication system 100 is not limited to a Long Term Evolution (LTE) system, but may be a future-evolution 5G system, an NR system, and the like. It will be appreciated that the use of unlicensed frequency bands may increase the system capacity of the wireless communication system 100. As shown in fig. 1, the wireless communication system 100 includes: one or more network devices 101 and one or more terminal devices 103. Wherein:
network device 101 may communicate wirelessly with terminal device 103 through one or more antennas. Each network device 101 may provide communication coverage for a respective coverage area 107. The coverage area 107 corresponding to the network device 101 may be divided into a plurality of sectors (sectors), wherein one sector corresponds to a portion of the coverage area (not shown). The network device 101 may be divided into one or more cells (cells), each cell has a frequency band where the cell is located or located, and the frequency bands where different cells are located may be the same or different. Wherein a sector is a geographical concept and a cell is a logical concept. One or more cells may be included on the network device, and for each cell, the network device may configure one or more secondary cells for each cell. For a certain terminal device, only one of multiple cells on the network device is a primary cell (PCell) of the terminal device, and other cells may be all or partially secondary cells (scells) of the terminal device. When the terminal accesses the network, the accessed cell is the main cell of the terminal. The terminal needs to report the CA capability (for example, a CA combination list) supported by the terminal to the network device, and the network device learns which frequency bands are supported by the terminal according to the CA capability reported by the terminal, and then selects a plurality of auxiliary cells for the terminal from the auxiliary cells of the main cell of the terminal as the auxiliary cells of the terminal. For example, the network device includes 3 cells, which are cell 1, cell 2, and cell 3, respectively, where the frequency band of cell 1 is band1, the frequency band of cell 2 is band2, and the frequency band of cell 3 is band 3. The network device pre-configures the secondary cell of the cell 1 to include a cell 2 and a cell 3, and the secondary cell of the cell 2 includes the cell 1 and the cell 3. When the terminal accesses the network, the accessed cell is cell 1, and then the cell 1 is the main cell of the terminal. The network device sends the CA frequency bands (band2 and band3) in which the secondary cells (i.e., cell 2 and cell 3) of the primary cell are located to the terminal, and after receiving the CA frequency bands, the terminal matches the CA combinations supported by the terminal itself, and assuming that the CA combinations supported by the terminal itself include band1+ band2, the CA combination list sent by the terminal to the network device includes band1+ band 2. And the network equipment acquires the CA capability of the terminal according to the CA combination list reported by the terminal and configures a cell 2 for the terminal as an auxiliary cell of the terminal. The frequency bands supported by the operator are different from the frequency bands supported by the cell. The frequency bands supported by a cell are a subset of the frequency bands supported by the operator. The number of frequency bands supported by a cell is smaller than the frequency bands supported by an operator. For example, bands (bands) supported by a certain operator include bands 1 to 10, bands supported by a certain network device (e.g., a base station) deployed by the operator include band1, band2, and band3, and the network device lays out cells on the three bands, where the band of a certain cell is band1, so that it is known that the number of bands supported by the cell is less than or equal to the number of bands supported by the network device, and the number of bands supported by the cell is less than the number of bands supported by the operator.
In this embodiment, the network device 101 may include: evolved NodeB (eNB or eNodeB), or next-generation Node B (gNB), etc. The wireless communication system 100 may include several different types of network devices 101, such as macro base stations (macro base stations), micro base stations (micro base stations), and so on. Network device 101 may apply different radio technologies, such as a cell radio access technology, or a WLAN radio access technology.
The terminal devices 103 may be distributed throughout the wireless communication system 100 and may be stationary or mobile. In this embodiment, the terminal device 103 may include: mobile devices, mobile stations (mobile stations), mobile units (mobile units), wireless units, remote units, user agents, mobile clients, and the like.
In the embodiment of the present application, the wireless communication system 100 may support a multi-Carrier Aggregation (CA) technique. The multicarrier aggregation technique allows multiple contiguous or non-contiguous carriers over multiple frequency bands to be grouped together to simultaneously serve terminal device 103, or multiple contiguous or non-contiguous carriers over a single frequency band to be grouped together to simultaneously serve terminal device 103, to provide higher peak rates and system throughput. For example, see fig. 2A, which is a schematic diagram of discontinuous multi-carrier aggregation. The carrier 1, the carrier 2, and the carrier 3 are different carriers on the frequency band1, the carrier 4 is a carrier on the frequency band2, and the carrier 1, the carrier 2, the carrier 3, and the carrier 4 are aggregated to obtain a system bandwidth of the terminal device 103. Terminal device 103 may transmit data to network device 101 in the system bandwidth formed by the aggregation.
In this embodiment, the network device 101 may send a system message (SI) within its coverage area 107, and the SI content is the same within the coverage area 107 of the network device 101. SI is divided into minimum SI (MinimumSI) and other SI (other SI). Where Other SI is a collection of System Information Blocks (SIBs).
Several concepts related to the present application are described below.
1. Primary cell (PCell): the primary cell is a cell operating on the primary frequency band. The UE performs an initial RRC connection establishment procedure in the cell or starts an RRC connection re-establishment procedure. During the initial network entry phase, the UE selects a suitable cell (e.g., the cell with the strongest signal), receives system information of the cell, and prepares for attachment. The UE may then establish an RRC connection with the cell. A schematic diagram of the RRC connection procedure can be seen in fig. 2B. Wherein:
step one, the UE sends a random access Preamble (Preamble) message (also called msg1) to the network device (e.g. the gNB), where the Preamble message includes a random access Preamble sequence Preamble selected by the UE.
Step two, after receiving the preamble sent by the UE, the network device sends an RRC random access response (also called msg2) to the UE in a random access response window.
Step three, after receiving the RRC random access response, the UE sends an RRC connection establishment request (also called msg3) on the uplink resource allocated by the network device.
Step four, the network equipment sends RRC connection establishment information (also called msg4) to the terminal.
And step five, after the competition solution is completed, the UE establishes a signaling radio bearer according to the information in the RRC connection establishment message and sends the RRC connection establishment completion message to the network equipment.
After receiving the RRC connection setup complete message, the network device triggers the core network to set up the control plane connection and the user plane connection of the terminal.
The network device may be divided into one or more cells, and the cell establishing RRC connection with the UE is the PCell.
2. Secondary cell (SCell): the secondary cell is a cell operating on a secondary frequency band. Once the RRC connection is established, the network side may configure one or more secondary cells for the UE, and the secondary cells may provide additional radio resources for the UE.
3. Serving cell (serving cell): a UE in RRC connected state has only one serving cell if CA is not configured. If the UE is configured with CA, the serving cell set includes a PCell and an SCell.
Carrier Aggregation (CA) is a process of aggregating 2 or more carrier elements (CCs) to support a larger transmission bandwidth (e.g., up to 100MHz), and the maximum bandwidth of each CC may be 20MHz, for example. To efficiently utilize fragmented spectrum, CA supports aggregation between different CCs. As shown in fig. 2A. Wherein, adjacent CC aggregation in the same frequency band is supported. That is, the terminal can perform data transmission on adjacent carriers in the same frequency band. And supporting non-contiguous CC aggregation in the same frequency band. That is, the terminal may perform data transmission on non-adjacent carriers of the same frequency band. And supporting CC aggregation in different frequency bands. That is, the terminal may perform data transmission on carriers of different frequency bands. The frequency band a in fig. 2A may be understood as a frequency band in which a primary cell of the UE is located, and the frequency band B may be understood as a frequency band in which a certain secondary cell of the UE is located. The frequency band for CA aggregation should be in a primary-secondary relationship. That is, the CA aggregation may be an aggregation between adjacent or unconnected CCs in the frequency band of the primary cell, or an aggregation between a CC in the frequency band of the primary cell and a CC in the frequency band of the secondary cell.
4. Source cell, target cell: when the UE is subjected to mobile handover, the UE is handed over from one cell to another cell. The cell connected before the UE handover is the source cell and the cell connected after the UE handover is the target cell. The source cell and the target cell may be different cells on the same base station (i.e. cell handover with the same base station), or may be cells on two base stations (i.e. cell handover across base stations), which is not limited in this application. It should be noted that the source cell and the target cell are both understood as the primary cell. When the UE is switched to the target cell, the target base station may also configure one or more secondary cells for the UE.
Firstly, when the terminal registers the network, the terminal sends the CA combination supported by the terminal to the service base station, and the service base station determines the CA combination capability of the terminal according to the CA combination reported by the terminal. And the service base station stores the CA combination supported by the service base station in the received CA combination into a CA capability configuration table, activates one CA combination and sends the activation parameter to the terminal. As the CA capability of the terminal is continuously improved, the terminal will gradually support the CAs of 3 carrier units (CCs), 4 CCs and5 CCs, and the Long Term Evolution (LTE) frequency bands supported by the terminal are gradually increased, so that the number of CA combinations reported by the terminal is exponentially increased, and the complexity of the frequency band combinations is also increased. In the existing protocol, when the number of CA combinations reported by a terminal is greater than the number supported by a base station, the base station cannot analyze all CA combinations reported by the terminal, so that a compatibility problem occurs, and finally, the terminal cannot access the network and cannot normally communicate. Therefore, in order to avoid that the terminal cannot access the network due to the fact that the number of the CA combinations reported by the terminal is large, the application provides a method for reporting the capability of the terminal. For example, when accessing the network, the terminal receives CA information issued by the network device, where the CA information is a CA combination or a CA frequency band list supported by the network device itself. The terminal screens the CA information supported by the terminal based on the CA information issued by the network equipment, screens out the CA combinations supported by the network equipment and also supported by the terminal, and then reports the screened CA combination list to the network equipment. The problem that the number of reported CA combinations is too large because the terminal only reports the CA capacity based on the CA combinations supported by the terminal is avoided. In addition, the CA combination reported by the terminal is supported by the network equipment, so that the success rate of the terminal accessing the network can be improved.
The following method examples will describe the methods provided herein in detail.
Based on the foregoing corresponding embodiments of the wireless communication system 100, embodiments of the present invention provide various methods for confirming the terminal carrier aggregation capability, and several methods for determining the terminal carrier aggregation capability referred to in this application are described in detail below with reference to fig. 3 to 6. Referring to fig. 3, a method for determining carrier aggregation capability of a terminal includes, but is not limited to, the following steps:
s301, the network equipment sends the CA information of the cell to the terminal, and the terminal receives the CA information of the cell sent by the network equipment, wherein the CA information comprises a CA frequency band list where the auxiliary cell of the cell is located.
S302, the terminal sends a second CA combination list to the network equipment, the network equipment receives the second CA combination list sent by the terminal, the second CA combination list is determined by the terminal according to the CA frequency range list where the auxiliary cell of the cell is located and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal. Specifically, the cell is a cell that the terminal is ready to access or is accessing. This cell may be understood as a primary cell (PCell). The secondary cell is a secondary cell configured for the primary cell in advance by the network equipment. For example, in the initial network entry process, the cell that is ready to establish the RRC connection procedure with the terminal or has already established the RRC connection procedure is the primary cell. The PCell having established the RRC connection with the terminal transmits CA information to the terminal through a network device (e.g., a base station) in which the PCell is located. The CA information includes a frequency band list where a secondary cell (SCell) configured by the network device for the PCell is located. Optionally, the CA information may further include a frequency band in which the PCell is located. The CA information may also not include a frequency band where the PCell is located, and since the PCell is a cell that the terminal prepares to access or is accessing, the terminal knows the frequency band where the primary cell is located.
The second CA combination list sent by the terminal to the network device may be all combinations of CA combinations determined by the terminal based on the CA frequency band lists of the primary cell and the secondary cell and the CA combinations supported by the terminal itself, or may be some combinations of the all combinations. For example, some combination terminals in all combinations have been reported before, so that this time, it is not necessary to report this combination again.
For example, the frequency band (band) of the primary cell is band1, the secondary cells configured by the network device for the primary cell include 2 secondary cells, and the frequency bands of the 2 secondary cells are band2 and band3, respectively. The primary cell transmits band2 and band3 to the terminal through the network equipment in which it is located. CA combinations supported by the terminal itself comprise band1+ band2, band1+ band3, band2+ band4+ band5 and band3+ band 4. Therefore, when the terminal performs the matched filtering on the CA combination supported by the terminal, the filtering can be performed based on the three frequency bands where the primary cell and the secondary cell are located. Since the above band1, band2, and band3 all belong to the frequency band of the primary cell or the secondary cell, and band4 and band5 do not belong to the frequency band of the primary cell or the secondary cell, the second CA combination determined by the terminal includes band1+ band2, band1+ band 3. Therefore, the CA combinations reported by the terminal are closely related to the current primary cell and the secondary cell of the primary cell, and CA combinations corresponding to CA frequency bands of other cells except the current primary cell and the secondary cell of the primary cell are eliminated.
Alternatively, the above steps S301 and S302 may be implemented based on an RRC connection establishment procedure. Specifically, a partial flow chart of the RRC connection establishment procedure can be seen in fig. 2B. The network device may send the CA frequency band list where the secondary cell of the cell is located to the terminal through the RRC connection setup message in step four. Accordingly, the terminal may send the determined second CA combination list to the network device through the RRC connection setup complete message in step five. Optionally, after step S302, if the network device sends a UE Capability query request to the terminal, the CA combination carried in the UE Capability information message (e.g., UE-EUTRA-Capability message) sent by the UE to the network device is the second CA combination list. For example, in an initial network access stage, the network device may actively send a UE capability query request to the terminal to request the UE to report its own capability.
Optionally, in the initial network access stage, the network device may send a CA frequency band list in which the secondary cell of the cell is located to the terminal through an RRC connection setup message, and subsequently, in the process of reporting the terminal capability, the network device may actively send a terminal capability query request to the terminal, and the terminal sends a terminal capability information message to the terminal according to the terminal capability query request, where the terminal capability information message includes the second CA combination list.
Alternatively, the terminal may trigger the network device to query the capabilities of the UE. For example, the network device sends a CA frequency band list where the secondary cell of the cell is located to the terminal through an RRC connection setup message, and after receiving the RRC connection setup message, the terminal sends indication information to the network device, where the indication information is used to indicate the network device to query the capability of the UE. After receiving the indication information, the network device sends a UE Capability query request to the terminal, and then after receiving the UE Capability query request, the UE sends a UE Capability information message (e.g., a UE-EUTRA-Capability message) to the network device, where the UE Capability information message carries the second CA combination list. In this case, the terminal triggers the network device to inquire the terminal capability so that the terminal reports the second CA combination list to the network device through the terminal capability information message.
Or, the network device may send the CA frequency band list in which the secondary cell of the cell is located to the terminal through an RRC connection setup message, and the subsequent terminal may send the second CA combination list to the network device through a message newly defined in the protocol.
Optionally, the steps S301 and S302 may be implemented based on an RRC connection reestablishment procedure. Specifically, a partial flow chart of the RRC connection reestablishment procedure can be seen in fig. 3A. The process comprises the following steps of: the terminal sends an RRC connection reestablishment request to the network device. Step two: the network device sends an RRC connection reestablishment message to the terminal. Step three: and the terminal sends an RRC connection reestablishment completion message to the network equipment. The network device may send the CA frequency band list where the secondary cell of the cell is located to the terminal through the RRC connection reestablishment message in step two. Accordingly, the terminal may send the determined second CA combination list to the network device through the RRC connection reestablishment complete message in step three.
Or, the network device may send the CA frequency band list in which the secondary cell of the cell is located to the terminal through an RRC connection reestablishment message, and the subsequent terminal may send the second CA combination list to the network device through a message newly defined in the protocol. Or, the network device sends the CA frequency band list where the secondary cell of the cell is located to the terminal through the RRC connection reestablishment message, and the terminal sends the indication information to the network device after receiving the RRC connection reestablishment message, where the indication information is used to indicate the capability of the network device to query the UE. After receiving the indication information, the network device sends a UE Capability query request to the terminal, and then after receiving the UE Capability query request, the UE sends a UE Capability information message (e.g., a UE-EUTRA-Capability message) to the network device, where the UE Capability information message carries the second CA combination list.
Optionally, the network device sends the CA frequency band list where the secondary cell of the cell is located to the terminal through a system message. For example, the network device carries the CA frequency band list where the secondary cell of the cell is located in the SIB message and sends the SIB message to the UE. And after receiving the CA frequency band list, the UE determines the second CA combination list. Thereafter, the terminal may report the second CA combination list to the network device through an RRC connection setup request, an RRC connection setup complete message, an RRC connection reestablishment request, an RRC connection reestablishment complete message, or a UE capability information message. For the condition that the terminal reports the second CA combination list to the network device through the UE capability information message, the network device may actively query the UE capability, or the terminal may trigger the network device to query the UE capability.
Optionally, if the terminal has reported the CA combination list before, after determining the second CA combination list based on the CA frequency band list delivered by the network device and the CA combination supported by the terminal, the terminal needs to report the second CA combination list to the network device again to update the capability of the UE. For example, the terminal may trigger the network device to query the capability of the UE, send indication information to the network device, indicate the network device to query the capability of the UE, and send a UE capability query request to the terminal after the network device receives the indication information. After receiving the UE capability query request, the terminal sends the network device the UE capability information message carrying the second CA combination list. Or the terminal reports the newly determined second CA combination list to the network device, where the second CA combination list changes compared with the CA combination list reported before.
Optionally, the network device may send the CA frequency band list where the secondary cell of the cell is located to the terminal through a message newly defined in the protocol.
After receiving the second CA combination list sent by the terminal, the network device obtains the CA capability of the terminal according to the second CA combination list, and then can select a plurality of auxiliary cells from the auxiliary cells configured for the main cell as the auxiliary cells of the terminal.
For example, the network device includes 3 cells, which are cell 1, cell 2, and cell 3, respectively, where the frequency band of cell 1 is band1, the frequency band of cell 2 is band2, and the frequency band of cell 3 is band 3. The network device pre-configures the secondary cell of the cell 1 to include a cell 2 and a cell 3, and the secondary cell of the cell 2 includes the cell 1 and the cell 3. When the terminal accesses the network, the accessed cell is cell 1, and then the cell 1 is the main cell of the terminal. The CA information sent by the network device to the terminal includes CA frequency bands (i.e., band2 and band3) in which secondary cells (i.e., cell 2 and cell 3) of a primary cell (i.e., cell 1) are located, and after receiving the CA frequency bands, the terminal matches the CA combinations supported by itself, and assuming that the CA combinations supported by the terminal itself include band1+ band2, band2+ band4, the second CA combination list sent by the terminal to the network device includes band1+ band 2. And the network equipment acquires that the terminal supports band1+ band2 and does not support band1+ band3 according to the second CA combination list reported by the terminal, and configures a cell 2 as a secondary cell of the terminal.
By implementing the embodiment of the invention, the terminal determines the CA combination list by combining the CA frequency band where the auxiliary cell of the cell which is being accessed or is accessed is located and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combination reported by the terminal to the network equipment is positioned in the CA frequency band of the cell and the auxiliary cell, and the CA combination reported by the terminal is reported according to the actual configuration condition of the network equipment, so that the matching degree of the CA combination reported by the terminal and the CA combination supported by the cell can be improved. And if the operator updates the combination and matching of the CA frequency bands supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
Referring to fig. 4, it is a flowchart of another method for determining carrier aggregation capability of a terminal according to an embodiment of the present invention. The method includes, but is not limited to, the steps of:
s401, the network equipment sends the CA information of the cell to the terminal, and the terminal receives the CA information of the cell sent by the network equipment, wherein the CA information comprises a first CA combination list supported by the cell.
S402, the terminal sends a second CA combination list to the network equipment, the network equipment receives the second CA combination list sent by the terminal, the second CA combination list is determined by the terminal according to the first CA combination list supported by the cell and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
Specifically, the cell is a cell that the terminal is ready to access or is accessing. This cell may be understood as a primary cell (PCell). For example, in the initial network entry process, the cell that is ready to establish the RRC connection procedure with the terminal or has already established the RRC connection procedure is the primary cell. The PCell having established the RRC connection with the terminal transmits CA information to the terminal through a network device (e.g., a base station) in which the PCell is located. The CA information includes a CA combination list supported by the PCell.
The second CA combination list sent by the terminal to the network device may be all combinations of CA combinations determined by the terminal based on the first CA combination list supported by the PCell and CA combinations supported by the terminal itself, or may be partial combinations of the all combinations. For example, some combination terminals in all combinations have been reported before, so that this time, it is not necessary to report this combination again.
For example, the frequency band (band) of the primary cell is band1, the secondary cells configured by the network device for the primary cell include 2 secondary cells, and the frequency bands of the 2 secondary cells are band2 and band3, respectively. The first CA combination list supported by the primary cell includes band1+ band2, band2+ band1, band1+ band3, band1+ band2+ band 3. CA combinations supported by the terminal itself comprise band1+ band2, band1+ band3, band2+ band4+ band5 and band3+ band 4. When the terminal performs matching filtering on the self-supported CA combination, the terminal may perform filtering based on the first CA combination list. Thus, the second CA combination determined by the terminal includes band1+ band2, band1+ band 3. Compared with the prior art, the CA combinations reported by the UE include band1+ band2, band1+ band3, band2+ band4+ band5, and band3+ band4, and the number of the CA combinations reported by the UE is reduced.
Optionally, the steps S401 and S402 may be implemented based on an RRC connection establishment procedure. Specifically, a partial flow chart of the RRC connection establishment procedure can be seen in fig. 2B. The network device may send the list of CA combinations supported by the cell to the terminal through the RRC connection setup message in step four. Accordingly, the terminal may send the determined second CA combination list to the network device through the RRC connection setup complete message in step five. Optionally, after step S402, if the network device sends a UE Capability query request to the terminal, the CA combination carried in the UE Capability information message (e.g., UE-EUTRA-Capability message) sent by the UE to the network device is the second CA combination list. For example, in an initial network access stage, the network device may actively send a UE capability query request to the terminal to request the UE to report its own capability.
Optionally, in an initial network access stage, the network device may send a first CA combination list supported by the cell to the terminal through an RRC connection setup message, and subsequently, in a process of reporting the terminal capability, the network device may actively send a terminal capability query request to the terminal, and the terminal sends a terminal capability information message to the terminal according to the terminal capability query request, where the terminal capability information message includes the second CA combination list.
Alternatively, the terminal may trigger the network device to query the capabilities of the UE. For example, the network device sends the first CA combination list supported by the cell to the terminal through an RRC connection setup message, and after receiving the RRC connection setup message, the terminal sends indication information to the network device, where the indication information is used to indicate the network device to query the capability of the UE. After receiving the indication information, the network device sends a UE Capability query request to the terminal, and then after receiving the UE Capability query request, the UE sends a UE Capability information message (e.g., a UE-EUTRA-Capability message) to the network device, where the UE Capability information message carries the second CA combination list. In this case, the terminal triggers the network device to inquire the terminal capability so that the terminal reports the second CA combination list to the network device through the terminal capability information message.
Alternatively, the network device may send the first CA combination list supported by the cell to the terminal through an RRC connection setup message, and the subsequent terminal may send the second CA combination list to the network device through a message newly defined in the protocol.
Optionally, the steps S401 and S402 may be implemented based on an RRC connection reestablishment procedure. Specifically, a partial flow chart of the RRC connection reestablishment procedure can be seen in fig. 3A. The network device may send the first CA combination list supported by the cell to the terminal through the RRC connection reestablishment message in step two. Accordingly, the terminal may send the determined second CA combination list to the network device through the RRC connection reestablishment complete message in step three.
Or, the network device may send the first CA combination list supported by the cell to the terminal through an RRC connection reestablishment message, and the subsequent terminal may send the second CA combination list to the network device through a message newly defined in the protocol.
Or, the network device sends the first CA combination list supported by the cell to the terminal through the RRC connection reestablishment message, and the terminal sends the indication information to the network device after receiving the RRC connection reestablishment message, where the indication information is used to indicate the network device to query the capability of the UE. After receiving the indication information, the network device sends a UE Capability query request to the terminal, and then after receiving the UE Capability query request, the UE sends a UE Capability information message (e.g., a UE-EUTRA-Capability message) to the network device, where the UE Capability information message carries the second CA combination list.
Optionally, the network device sends the first CA combination list supported by the cell to the terminal through a system message. For example, the network device carries a first CA combination list supported by the cell in a SIB message and sends the SIB message to the UE. And after receiving the first CA combination list, the UE determines the second CA combination list. Thereafter, the terminal may report the second CA combination list to the network device through an RRC connection setup request, an RRC connection setup complete message, an RRC connection reestablishment request, an RRC connection reestablishment complete message, or a UE capability information message. For the condition that the terminal reports the second CA combination list to the network device through the UE capability information message, the network device may actively query the UE capability, or the terminal may trigger the network device to query the UE capability.
Optionally, if the terminal has reported the CA combination list before, after determining the second CA combination list based on the first CA combination list issued by the network device and the CA combination supported by the terminal, the terminal needs to report the second CA combination list to the network device again to update the capability of the UE. For example, the terminal may trigger the network device to query the capability of the UE, send indication information to the network device, indicate the network device to query the capability of the UE, and send a UE capability query request to the terminal after the network device receives the indication information. After receiving the UE capability query request, the terminal sends the network device the UE capability information message carrying the second CA combination list. Or the terminal reports the newly determined second CA combination list to the network device, where the second CA combination list changes compared with the CA combination list reported before.
Optionally, the network device may send the CA combination list supported by the cell to the terminal through a message newly defined in the protocol.
After receiving the second CA combination list sent by the terminal, the network device obtains the CA capability of the terminal according to the second CA combination list, and then can select a plurality of auxiliary cells from the auxiliary cells configured for the main cell as the auxiliary cells of the terminal.
For example, the network device includes 3 cells, which are cell 1, cell 2, and cell 3, respectively, where the frequency band of cell 1 is band1, the frequency band of cell 2 is band2, and the frequency band of cell 3 is band 3. The network device pre-configures the secondary cell of the cell 1 to include a cell 2 and a cell 3, and the secondary cell of the cell 2 includes the cell 1 and the cell 3. When the terminal accesses the network, the accessed cell is cell 1, and then the cell 1 is the main cell of the terminal. The CA information sent by the network device to the terminal includes a first CA combination list (for example, band1+ band2, band2+ band1, band1+ band3, band1+ band2+ band3) supported by the primary cell (i.e., cell 1), and after receiving the first CA combination list, the terminal matches the CA combinations supported by itself, and assuming that the CA combinations supported by the terminal itself include band1+ band2 and band2+ band4, the second CA combination list sent by the terminal to the network device includes band1+ band 2. And the network equipment acquires that the terminal supports band1+ band2 and does not support band1+ band3 according to the second CA combination list reported by the terminal, and configures a cell 2 as a secondary cell of the terminal.
By implementing the embodiment of the invention, the terminal determines the CA combination list by combining the CA combinations supported by the cells to be accessed or accessed and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations related in the CA combination reported to the network equipment by the terminal all belong to the CA combinations supported by the network equipment, and the CA combination reported by the terminal is reported according to the actual configuration condition of the network equipment, so that the problem of mismatching caused by the CA combinations which are supported by the terminal and are not supported by the network equipment and reported by the terminal is solved. And if the operator updates the CA combination supported by the operator, the terminal can also be completely self-adaptive, and does not need to synchronize on the terminal side, thereby improving the self-adaptability of communication.
Referring to fig. 5, a flowchart of another method for determining carrier aggregation capability of a terminal according to an embodiment of the present invention is shown. The method includes, but is not limited to, the steps of:
s501, the first cell sends CA information of the second cell to the terminal through the first network equipment, and the terminal receives the CA information of the second cell sent by the first cell through the first network equipment, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the second cell is located.
S502, the terminal sends a second CA combination list to the second network equipment, the second network equipment receives the second CA combination list sent by the terminal, the second CA combination list is determined by the terminal according to the CA frequency band list of the auxiliary cell of the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal.
Specifically, the first cell is a cell connected before handover in the terminal cell handover process, that is, a source cell. The second cell is a cell connected after the terminal performs cell switching, namely a target cell. The second cell may be understood as a primary cell for providing a service for the terminal after cell handover is performed by the terminal, and the secondary cell of the second cell is an auxiliary cell configured for the primary cell by the network device.
Before cell switching, the first cell sends the CA information of the second cell to the terminal. The CA information includes a CA frequency band list in which the secondary cell of the second cell is located. The CA information may be acquired by the first cell from the second cell. Optionally, the CA information may further include a frequency band in which the second cell is located. The CA information may also not include the frequency band of the second cell, and the terminal knows the frequency band of the second cell because the second cell is a cell to which the terminal is to be handed over.
The sending, by the first cell, the CA information of the second cell to the terminal through the first network device may be understood as: the first network equipment sends the CA information of the second cell to the terminal on the first cell.
The first network device described in the embodiment of the present invention may be a source network device (e.g., a source base station) connected before the terminal is handed over, and the second network device may be a target network device (e.g., a target base station) connected after the terminal is handed over. Fig. 5 and 6 are descriptions of CA combination reporting procedure for handover procedure.
The second CA combination list sent by the terminal to the second network device may be all combinations of CA combinations determined by the terminal based on the CA frequency band list where the second cell and its secondary cell are located and the CA combinations supported by the terminal itself, or may be some combinations of the all combinations. For example, some combination terminals in all combinations have been reported before, so that this time, it is not necessary to report this combination again.
For example, the frequency band of the second cell is band1, and the frequency bands of the secondary cells configured by the network device for the second cell are band2 and band3, respectively. CA combinations supported by the terminal itself comprise band1+ band2, band1+ band3, band2+ band4+ band5 and band3+ band 4. The first cell transmits band2 and band3 to the terminal through the first network device. Therefore, when performing matching filtering on the CA combination supported by the terminal, the terminal may perform filtering based on the three frequency bands where the second cell and the secondary cell thereof are located. Since the above band1, band2, and band3 all belong to the frequency band of the second cell or the secondary cell thereof, and band4 and band5 do not belong to the frequency band of the second cell or the secondary cell thereof, the second CA combination determined by the terminal includes band1+ band2, band1+ band 3. In this embodiment, the CA combination reported by the UE is related to the second cell, after the UE performs the mobile handover, the CA capability supported by the target cell (i.e., the second cell) may change, and the terminal needs to report the CA combination adapted to the second cell again, so as to better adapt to the second cell and improve the communication quality.
Optionally, the steps S501 and S502 may be implemented based on an RRC connection reconfiguration procedure. Specifically, a partial flow chart of the RRC connection reconfiguration procedure can be seen in fig. 5A. The process comprises the following steps of: the source base station transmits an RRC connection reconfiguration message to the terminal. Step two: and the terminal sends an RRC connection reconfiguration completion message to the target base station. The first network device may send the CA frequency band list in which the secondary cell of the second cell is located to the terminal through the RRC connection reconfiguration message in step one. Accordingly, the terminal may send the determined second CA combination list to the second network device through the RRC connection reconfiguration complete message in step two.
Optionally, the terminal may further send the second CA combination list to the second network device through the UE capability information message. For example, the terminal may trigger the network device to query the capabilities of the UE. For example, the first network device sends the CA frequency band list where the secondary cell of the second cell is located to the terminal through an RRC connection reconfiguration message, and after receiving the RRC connection reconfiguration message, the terminal sends indication information to the second network device, where the indication information is used to indicate the second network device to query the capability of the UE. And after receiving the indication information, the second network device sends a UE Capability query request to the terminal, and after receiving the UE Capability query request, the UE sends a UE Capability information message (e.g., a UE-EUTRA-Capability message) to the second network device, where the UE Capability information message carries the second CA combination list.
Optionally, the first network device may send the CA frequency band list where the secondary cell of the second cell is located to the terminal through an RRC connection reconfiguration message. The terminal may send the determined second CA combination list to the second network device via a message newly defined in the protocol. Or, after the terminal is switched from the first network device to the second network device, the second network device may send the CA frequency band list where the secondary cell of the second cell is located to the terminal through a message newly defined in the protocol. The terminal may also send the determined second CA combination list to the second network device via a message newly defined in the protocol.
Optionally, the first network device and the second network device are different network devices, in this case, the embodiment of the present invention relates to cell handover across network devices.
Optionally, the first network device and the second network device are the same network device, and the embodiment of the present invention relates to cell handover in the same network device.
After receiving the second CA combination list sent by the terminal, the second network device obtains the CA capability of the terminal according to the second CA combination list, and then can select a plurality of auxiliary cells from the auxiliary cells configured for the main cell as the auxiliary cells of the terminal.
For example, the second network device includes 3 cells, which are cell 1, cell 2, and cell 3, respectively, where the frequency band of cell 1 is band1, the frequency band of cell 2 is band2, and the frequency band of cell 3 is band 3. The second network device pre-configures the secondary cell of the cell 1 to include a cell 2 and a cell 3, and the secondary cell of the cell 2 includes the cell 1 and the cell 3. When the terminal performs cell switching, the target cell selected by the source cell (i.e. the first cell) as the terminal is the cell 1 on the second network device, and then the cell 1 is the main cell after the terminal is switched. The CA information sent by the source cell to the terminal through the first network device includes CA frequency bands (i.e., band2 and band3) in which secondary cells (i.e., cell 2 and cell 3) of the designated switched primary cell (i.e., cell 1) are located, and after receiving the CA frequency bands, the terminal matches the CA combinations supported by itself, and assuming that the CA combinations supported by the terminal itself include band1+ band2 and band2+ band4, the second CA combination list sent by the terminal to the second network device includes band1+ band 2. And the second network equipment acquires that the terminal supports band1+ band2 and does not support band1+ band3 according to the second CA combination list reported by the terminal, and configures a cell 2 as the auxiliary cell of the terminal for the terminal.
By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the switched CA frequency band of the second cell and the auxiliary cell and the CA combinations supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations reported by the terminal to the network equipment are all located in the CA frequency bands of the switched second cell and the auxiliary cell, and the CA combinations reported by the terminal are reported according to the actual configuration conditions of the switched second cell and the auxiliary cell, so that the matching degree of the CA combinations reported by the terminal and the CA combinations supported by the cells can be improved. In addition, if the operator updates the CA frequency band combination configuration supported by the operator, the terminal can also be completely self-adaptive, and does not need to be synchronized on the terminal side, thereby improving the self-adaptability of communication.
Referring to fig. 6, it is a flowchart of another method for determining carrier aggregation capability of a terminal according to an embodiment of the present invention. The method includes, but is not limited to, the steps of:
s601, the first cell sends the CA information of the second cell to the terminal through the first network equipment, and the terminal receives the CA information of the second cell sent by the first cell through the first network equipment, wherein the CA information comprises a first CA combination list supported by the second cell.
S602, the terminal sends a second CA combination list to the second network device, the second network device receives the second CA combination list sent by the terminal, the second CA combination list is determined by the terminal according to the first CA combination list supported by the second cell and the CA combination supported by the terminal, and the second CA combination list is used for the second network device to determine the CA capability of the terminal.
Specifically, the first cell is a cell connected before handover in the terminal cell handover process, that is, a source cell. The second cell is a cell connected after the terminal performs cell switching, namely a target cell. Before cell switching, the first cell sends the CA information of the second cell to the terminal. The CA information includes a CA combination list supported by the second cell. The CA information may be acquired by the first cell from the second cell.
The first network device described in the embodiment of the present invention may be a source network device (e.g., a source base station) connected before the terminal is handed over, and the second network device may be a target network device (e.g., a target base station) connected after the terminal is handed over.
The second CA combination list sent by the terminal to the second network device may be all combinations of CA combinations determined by the terminal based on the CA frequency band list supported by the second cell and the CA combinations supported by the terminal itself, or may be partial combinations of the all combinations. For example, some combination terminals in all combinations have been reported before, so that this time, it is not necessary to report this combination again.
For example, the frequency band of the second cell is band1, and the secondary cells in the second cell include 2 secondary cells, and the frequency bands of the 2 secondary cells are band2 and band3, respectively. The first CA combination list supported by the second cell includes band1+ band2, band2+ band1, band1+ band3, band1+ band2+ band 3. CA combinations supported by the terminal itself comprise band1+ band2, band1+ band3, band2+ band4+ band5 and band3+ band 4. When the terminal performs matching filtering on the self-supported CA combination, the terminal may perform filtering based on the first CA combination list. Thus, the second CA combination determined by the terminal includes band1+ band2, band1+ band 3. In this embodiment, the CA combination reported by the UE is related to the second cell, after the UE performs the mobile handover, the CA capability supported by the target cell (i.e., the second cell) may change, and the terminal needs to report the CA combination adapted to the second cell again, so as to better adapt to the second cell and improve the communication quality.
Optionally, the steps S601 and S602 may be implemented based on an RRC connection reconfiguration procedure. Specifically, a partial flow chart of the RRC connection reconfiguration procedure can be seen in fig. 5A. The first network device may send the first CA combination list supported by the second cell to the terminal through the RRC connection reconfiguration message in step one. Accordingly, the terminal may send the determined second CA combination list to the second network device through the RRC connection reconfiguration complete message in step two.
Optionally, the terminal may further send the second CA combination list to the second network device through the UE capability information message. For example, the terminal may trigger the network device to query the capabilities of the UE. For example, the first network device sends the first CA combination list supported by the second cell to the terminal through an RRC connection reconfiguration message, and after receiving the RRC connection reconfiguration message, the terminal sends indication information to the second network device, where the indication information is used to indicate the second network device to query the capability of the UE. And after receiving the indication information, the second network device sends a UE Capability query request to the terminal, and after receiving the UE Capability query request, the UE sends a UE Capability information message (e.g., a UE-EUTRA-Capability message) to the second network device, where the UE Capability information message carries the second CA combination list.
Optionally, the first network device may send the first CA combination list supported by the second cell to the terminal through an RRC connection reconfiguration message. The terminal may send the determined second CA combination list to the second network device via a message newly defined in the protocol. Or, after the terminal is switched from the first network device to the second network device, the second network device may send the first CA combination list supported by the second cell to the terminal through a message newly defined in the protocol. The terminal may also send the determined second CA combination list to the second network device via a message newly defined in the protocol.
Optionally, the first network device and the second network device are different network devices, in this case, the embodiment of the present invention relates to cell handover across network devices.
Optionally, the first network device and the second network device are the same network device, and the embodiment of the present invention relates to cell handover in the same network device.
After receiving the second CA combination list sent by the terminal, the second network device obtains the CA capability of the terminal according to the second CA combination list, and then can select a plurality of auxiliary cells from the auxiliary cells configured for the main cell as the auxiliary cells of the terminal.
For example, the second network device includes 3 cells, which are cell 1, cell 2, and cell 3, respectively, where the frequency band of cell 1 is band1, the frequency band of cell 2 is band2, and the frequency band of cell 3 is band 3. The second network device pre-configures the secondary cell of the cell 1 to include a cell 2 and a cell 3, and the secondary cell of the cell 2 includes the cell 1 and the cell 3. When the terminal performs cell switching, the target cell selected by the source cell (i.e. the first cell) as the terminal is the cell 1 on the second network device, and then the cell 1 is the main cell after the terminal is switched. The CA information sent by the source cell to the terminal through the first network device includes a first CA combination list (for example, band1+ band2, band2+ band1, band1+ band3, band1+ band2+ band3) supported by a main cell (i.e., cell 1) after the terminal is handed over, and after receiving the first CA combination list, the terminal matches the CA combinations supported by itself, and assuming that the CA combinations supported by itself include band1+ band2 and band2+ band4, the second CA combination list sent by the terminal to the second network device includes band1+ band 2. And the second network equipment acquires that the terminal supports band1+ band2 and does not support band1+ band3 according to the second CA combination list reported by the terminal, and configures a cell 2 as the auxiliary cell of the terminal for the terminal.
By implementing the embodiment of the invention, in a mobile switching scene, the terminal determines the CA combination list by combining the CA combination supported by the switched second cell and the CA combination supported by the terminal, and the number of the CA combinations contained in the determined CA combination list is less than or equal to the number of all CA combinations supported by the terminal, so that the terminal can reduce the number of the reported CA combinations, avoid the compatibility problem caused by the fact that network equipment cannot analyze all CA combinations reported by the terminal, and ensure the success rate of network access of the terminal. And the CA combinations related in the CA combination reported to the switched network equipment by the terminal all belong to the CA combination supported by the switched second cell, and the CA combination reported by the terminal is reported according to the actual configuration condition of the switched second cell, so that the problem of mismatching caused by reporting the CA combination supported by the terminal but not supported by the network equipment by the terminal is avoided. And if the operator updates the CA combination supported by the operator, the terminal can also be completely self-adaptive, and does not need to synchronize on the terminal side, thereby improving the self-adaptability of communication.
The procedure for determining CA capability of the terminal according to the present application is described below by taking eight embodiments in fig. 7-14 as examples.
Example one
Referring to fig. 7, in an initial access procedure, a terminal may transmit an RRC connection setup request to a cell currently prepared for access (i.e., a source cell in fig. 7) (S701). The source cell transmits an RRC connection setup message to the terminal after receiving the RRC connection setup request for transmission (S702). The RRC connection establishment message needs to include an additional CA frequency band list, where the CA frequency band list is a CA frequency band where the secondary cell configured by the network device for the source cell is located. Optionally, the CA frequency band list may also include a frequency band in which the source cell is located. The CA frequency band list is used to inform the terminal of the CA frequency bands supported by the source cell, so that the terminal can conveniently screen based on the CA combinations supported by the terminal and the CA frequency bands supported by the source cell to screen out the matched CA combinations. Further, an RRC connection setup complete message is sent to the source cell (S703), where the RRC connection setup complete message includes the matched CA combination. For how to screen out the matched CA combinations, reference may be made to the examples in the foregoing embodiments, which are not described herein again. The subsequent source cell sends a UE capability query request to the terminal (S704), and after receiving the UE capability query request, the terminal reports the matched CA combination to the source cell through a UE capability information message (S705).
Alternatively, the terminal may report the matching CA combination in the RRC connection reestablishment process. The specific process is as follows: the terminal transmits an RRC connection reestablishment request to the source cell (S701). The source cell transmits an RRC connection reestablishment message to the terminal after receiving an RRC connection reestablishment request transmitted by the terminal (S702). The RRC connection reestablishment message needs to include an additional CA frequency band list, where the CA frequency band list is a CA frequency band in which the secondary cell configured by the network device for the source cell is located. Optionally, the CA frequency band list may also include a frequency band in which the source cell is located. The CA frequency band list is used to inform the terminal of the CA frequency bands supported by the source cell, so that the terminal can conveniently screen based on the CA combinations supported by the terminal and the CA frequency bands supported by the source cell to screen out the matched CA combinations. And then reports the matched CA combination to the source cell through an RRC connection reestablishment completion message (S703).
Or, the terminal may report the CA combination in the cell handover process. The specific process is as follows: the source cell sends a CA frequency band list of the target cell to the terminal through an RRC connection reconfiguration message (S706), where the CA frequency band list is a frequency band where an auxiliary cell configured for the target cell by the network device is located, and optionally, the CA frequency band list may further include a frequency band where the target cell is located. After receiving the RRC connection reconfiguration message sent by the source cell, the terminal sends an RRC connection reconfiguration complete message to the target cell (S707). The RRC connection reconfiguration complete message includes the matched CA combination screened by the terminal. And reporting the CA capability of the target cell to the target cell through an RRC reconfiguration completion message.
Example two
Referring to fig. 8, a source cell transmits a system message (S801), and a terminal receives the system message transmitted by the source cell, where the system message includes a CA band list. Here, the CA band list is a CA band in which the secondary cell configured by the network device for the source cell is located. Optionally, the CA frequency band list may also include a frequency band in which the source cell is located. Then, the terminal sends an RRC connection establishment request to the network device (S802), the network device sends an RRC connection establishment message to the terminal after receiving the RRC connection establishment request (S803), and then the terminal sends an RRC connection establishment completion message to the network device (S804), where the RRC connection establishment completion message includes the matched CA combination list. Or, the terminal sends an RRC connection reestablishment request to the network device (S802), the network device sends an RRC connection reestablishment message to the terminal after receiving the RRC connection reestablishment request (S803), and then the terminal sends an RRC connection reestablishment completion message to the network device (S804), where the RRC connection reestablishment completion message includes the matched CA combination list. If there is a UE capability query process subsequently, the network device sends a UE capability query request to the terminal (S804), and the terminal sends a UE capability information message to the network device (S805), where a CA combination carried in the UE capability information message (S805) is consistent with a CA combination carried in an RRC connection setup complete message or an RRC connection reestablishment complete message.
Or, the terminal may report the CA combination in the cell handover process. The specific process is as follows: the source cell sends an RRC connection reconfiguration message to the terminal (S807), where the RRC connection reconfiguration message includes a CA frequency band list of the target cell, and the CA frequency band list is a frequency band where an auxiliary cell of the target cell is located. After receiving the RRC connection reconfiguration message sent by the source cell, the terminal sends an RRC connection reconfiguration complete message to the target cell (S808). The RRC connection reconfiguration complete message includes the matched CA combination screened by the terminal. And reporting the CA capability of the target cell to the target cell through an RRC reconfiguration completion message.
EXAMPLE III
Referring to fig. 9, in an initial access or RRC reestablishment process, a terminal sends an RRC connection establishment request to a source cell (S901), and the source cell sends an RRC connection establishment message to the terminal (S902), where the RRC connection establishment message includes a CA frequency band list. Here, the CA band list is a CA band in which the secondary cell configured by the network device for the source cell is located. Optionally, the CA frequency band list may also include a frequency band in which the source cell is located. The terminal sends an RRC connection setup complete message to the source cell after receiving the RRC connection setup message (S903), and if the CA capability of the terminal needs to be updated, the RRC connection setup complete message comprises indication information, and the indication information is used for informing the source cell of triggering the process of inquiring the UE capability. The source cell sends a UE capability query request to the terminal according to the indication information (S904), requesting the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S905), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA frequency band list delivered by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application. Or, the terminal sends an RRC connection reestablishment request to the source cell (S901), and the source cell sends an RRC connection reestablishment message to the terminal (S902), where the RRC connection reestablishment message includes a CA frequency band list. Here, the CA band list is a CA band in which the secondary cell configured by the network device for the source cell is located. Optionally, the CA frequency band list may also include a frequency band in which the source cell is located. The terminal sends an RRC connection reestablishment completion message to the source cell after receiving the RRC connection reestablishment message (S903), and if the CA capability of the terminal needs to be updated, the RRC connection reestablishment completion message comprises indication information which is used for informing the source cell of triggering the process of inquiring the UE capability. The source cell sends a UE capability query request to the terminal according to the indication information (S904), requesting the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S905), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA frequency band list delivered by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
In a cell handover phase, a source cell sends an RRC connection reconfiguration message to a terminal (S906), where the RRC connection reconfiguration message includes a CA frequency band list of a target cell, and the CA frequency band list is a frequency band where an auxiliary cell configured for the target cell by a network device is located. The terminal sends an RRC connection reconfiguration complete message to the target cell (S907) after receiving the RRC connection reconfiguration message sent by the source cell, and if the terminal needs to update the CA capability of the terminal, the RRC connection reconfiguration complete message comprises indication information which is used for informing the target cell of triggering the process of inquiring the UE capability. The target cell sends a UE capability query request to the terminal according to the indication information (S908), requesting the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S909), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal through matching based on the CA combination supported by the terminal and the CA frequency band list issued by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
Example four
Referring to fig. 10, a source cell transmits a system message (S1001), and a terminal receives the system message transmitted by the source cell, where the system message includes a CA band list of the source cell. Here, the CA band list is a CA band in which the secondary cell configured by the network device for the source cell is located. Optionally, the CA frequency band list may also include a frequency band in which the source cell is located. The terminal transmits an RRC connection setup request to the source cell (S1002), the source cell transmits an RRC connection setup message to the terminal (S1003), and thereafter, the source cell transmits an RRC connection setup complete message to the terminal (S1004). If the terminal needs to update the CA capability of itself, the RRC connection setup complete message includes indication information, where the indication information is used to notify the source cell to trigger a process of querying the UE capability. The source cell sends a UE capability query request to the terminal according to the indication information (S1006), requesting the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S1007), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA frequency band list delivered by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
Or, the source cell sends a system message (S1001), and the terminal receives the system message sent by the source cell, where the system message includes the CA frequency band list of the source cell. Here, the CA band list is a CA band in which the secondary cell configured by the network device for the source cell is located. Optionally, the CA frequency band list may also include a frequency band in which the source cell is located. The terminal transmits an RRC connection reestablishment request to the source cell (S1002), the source cell transmits an RRC connection reestablishment message to the terminal (S1003), and thereafter, the source cell transmits an RRC connection reestablishment complete message to the terminal (S1004). If the terminal needs to update the CA capability of itself, the RRC connection reestablishment complete message includes indication information, where the indication information is used to notify the source cell to trigger a process of querying the UE capability. The source cell sends a UE capability query request to the terminal according to the indication information (S1006), requesting the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S1007), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA frequency band list delivered by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
Or, the terminal may report the CA combination in the cell handover process. The specific process is as follows: the source cell sends an RRC connection reconfiguration message to the terminal, where the RRC connection reconfiguration message includes a CA frequency band list of the target cell, where the CA frequency band list is a frequency band where an auxiliary cell configured for the target cell by the network device is located, and optionally, the CA frequency band list may further include a frequency band where the target cell is located. The terminal sends an RRC connection reconfiguration complete message to the target cell after receiving the RRC connection reconfiguration message sent by the source cell (S1008), and if the CA capability of the terminal needs to be updated, the RRC connection reconfiguration complete message includes indication information, where the indication information is used to notify the target cell of triggering a process of querying the UE capability. The target cell sends a UE capability query request to the terminal according to the indication information (S1009), and requests the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S1010), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA frequency band list delivered by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
EXAMPLE five
Referring to fig. 11, in an initial access procedure, a terminal may transmit an RRC connection setup request to a cell currently prepared for access, i.e., a source cell in fig. 11 (S1101). The source cell transmits an RRC connection setup message to the terminal after receiving the RRC connection setup request for transmission (S1102). The RRC connection setup message needs to include an additional CA combination list, which is the CA combination supported by the source cell itself. The CA combination list is used to notify the terminal of the CA combination supported by the source cell, so that the terminal can conveniently screen out a matching CA combination based on the CA combination supported by the terminal and the CA combination supported by the source cell. The terminal transmits an RRC connection setup complete message including the matched CA combination to the source cell (S1103). For how to screen out the matched CA combinations, reference may be made to the examples in the foregoing embodiments, which are not described herein again. The subsequent source cell sends a UE capability query request to the terminal (S1104), and after receiving the UE capability query request, the terminal sends a UE capability information message to the source cell (S1105), where the UE capability information message includes a CA combination matched with the terminal.
Alternatively, the terminal may report the matching CA combination in the RRC connection reestablishment process. The specific process is as follows: the terminal transmits an RRC connection reestablishment request to the source cell (S1101). The source cell transmits an RRC connection reestablishment message to the terminal after receiving the RRC connection reestablishment request transmitted by the terminal (S1102). The RRC connection reestablishment message needs to include an additional CA combination list, which is the CA combination supported by the source cell. The CA combination list is used to notify the terminal of the CA combination supported by the source cell, so that the terminal can conveniently screen out a matching CA combination based on the CA combination supported by the terminal and the CA combination supported by the source cell. Then, the terminal sends an RRC connection reestablishment complete message to the source cell (S1103), where the RRC connection reestablishment complete message includes the CA combination matched by the terminal.
Or, the terminal may report the CA combination in the cell handover process. The specific process is as follows: the source cell sends an RRC connection reconfiguration message to the terminal (S1106), where the RRC connection reconfiguration message includes a CA combination list supported by the target cell. After receiving the RRC connection reconfiguration message sent by the source cell, the terminal sends an RRC connection reconfiguration complete message to the target cell (S1107). The RRC connection reconfiguration complete message includes the matched CA combination screened by the terminal. And reporting the CA capability of the target cell to the target cell through an RRC reconfiguration completion message.
EXAMPLE six
Referring to fig. 12, a source cell transmits a system message (S1201), and a terminal receives the system message transmitted by the source cell, the system message including a CA combination list supported by the source cell itself. The subsequent terminal may report the matched CA combination to the source cell through an RRC connection setup complete message or an RRC connection reestablishment complete message (S1204). If there is a UE capability query procedure subsequently, the CA combination carried in the UE capability information message (S1206) by the terminal is consistent with the CA combination carried in the RRC connection setup complete message or the RRC connection reestablishment complete message. The steps not described may refer to the foregoing embodiments, and are not described again here.
Or, the terminal may report the CA combination in the cell handover process. The specific process is as follows: the source cell transmits an RRC connection reconfiguration message including a CA combination list supported by the target cell to the terminal (S1207). After receiving the RRC connection reconfiguration message sent by the source cell, the terminal sends an RRC connection reconfiguration complete message to the target cell (S1208). The RRC connection reconfiguration complete message includes the matched CA combination screened by the terminal. And reporting the CA capability of the target cell to the target cell through an RRC reconfiguration completion message.
EXAMPLE seven
Referring to fig. 13, in an initial access or RRC reestablishment process, a terminal sends an RRC connection establishment request or an RRC connection reestablishment request to a source cell (S1301), and the source cell sends an RRC connection establishment message or an RRC connection reestablishment message to the terminal (S1302), where the RRC connection establishment message or the RRC connection reestablishment message includes a CA combination list supported by the source cell itself. After receiving the RRC connection setup message or the RRC connection reestablishment message, the terminal sends an RRC connection setup complete message or an RRC connection reestablishment complete message to the source cell (S1303), and if the terminal needs to update its CA capability, the RRC connection setup complete message or the RRC connection reestablishment complete message includes indication information, where the indication information is used to notify the source cell to trigger a process of querying the UE capability. The source cell sends a UE capability query request to the terminal according to the indication information (S1304), and requests the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S1305), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal through matching based on the CA combination supported by the terminal and the CA combination list issued by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
In the cell handover phase, the source cell sends an RRC connection reconfiguration message to the terminal (S1306), where the RRC connection reconfiguration message includes a CA combination list supported by the target cell. After receiving the RRC connection reconfiguration message transmitted by the source cell, the terminal transmits an RRC connection reconfiguration complete message to the target cell (S1307). If the CA capability of the RRC connection needs to be updated, the RRC connection reconfiguration complete message comprises indication information, and the indication information is used for informing the target cell of triggering the process of inquiring the UE capability. The target cell sends a UE capability query request to the terminal according to the indication information (S1308), requesting the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S1309), where the UE capability information message carries a matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA combination list delivered by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
Example eight
Referring to fig. 14, a source cell transmits a system message (S1401), and a terminal receives the system message transmitted by the source cell. The system message includes the CA combination list supported by the source cell itself. If the terminal needs to update its CA capability, then subsequently in the RRC connection setup procedure or the RRC connection reestablishment procedure, an indication message is sent to the source cell through the RRC connection setup complete message or the RRC connection reestablishment complete message (S1404), and the source cell is notified to trigger the process of querying the UE capability. The source cell sends a UE capability query request to the terminal according to the indication information (S1405), requesting the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S1406), where the UE capability information message carries the matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA combination list issued by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
Or, the terminal may report the CA combination in the cell handover process. The specific process is as follows: the source cell transmits an RRC connection reconfiguration message including a CA combination list supported by the target cell to the terminal (S1407). After receiving the RRC connection reconfiguration message sent by the source cell, the terminal sends an RRC connection reconfiguration complete message to the target cell (S1408). If the CA capability of the RRC connection needs to be updated, the RRC connection reconfiguration complete message comprises indication information, and the indication information is used for informing the target cell of triggering the process of inquiring the UE capability. The target cell sends a UE capability query request to the terminal according to the indication information (S1409), and requests the terminal to report its own capability. The terminal sends a UE capability information message to the source cell (S1410), where the UE capability information message carries the matched CA combination list, and the CA combination list is determined by the terminal based on the matching between the CA combination supported by the terminal and the CA combination list issued by the source cell. If the terminal has reported the CA combination before, this time, a CA combination different from the previous time may be reported, and of course, all the CA combinations after matching may also be reported, which is not limited in the present application.
The above-mentioned scheme provided by the embodiment of the present application is mainly introduced from the perspective of interaction between network devices. It is understood that each network device, such as the terminal and the network device, includes a corresponding hardware structure and/or software module for performing each function in order to realize the functions. Those of skill in the art will readily appreciate that the various illustrative network devices and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the terminal and the network device may be divided into the functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
In the case of dividing each functional module by corresponding functions, fig. 15 shows a schematic diagram of a possible logical structure of the terminal according to the above embodiment, and the terminal 700 includes: a receiving unit 701 and a transmitting unit 702. The receiving unit 701 is configured to support the terminal to perform the steps of receiving information by the terminal in the method embodiments shown in fig. 3 to fig. 14. The sending unit 702 is configured to support the terminal to perform the steps of sending information by the terminal in the foregoing method embodiments shown in fig. 3 to fig. 14. Optionally, the terminal 700 may further include a processing unit 703 for supporting the terminal to execute the steps of the information determined by the terminal in the foregoing method embodiments shown in fig. 3 to fig. 14, and other functions besides the functions of the sending unit and the receiving unit, and the like.
In terms of hardware implementation, the processing unit 703 may be a processor or a processing circuit; the receiving unit 701 may be a transceiver or a transceiver circuit; the transmitting unit 702 may be a transceiver or a transceiver circuit, and the transmitting unit 702 and the receiving unit 701 may constitute a communication interface.
Fig. 16 is a schematic diagram of a possible hardware structure of the terminal according to the foregoing embodiments, provided in this application. As shown in fig. 16, the terminal apparatus 800 may include: input-output modules (including audio input-output module 818, key input module 816, display 820, etc.), user interface 802, one or more processors 804, transceiver 806, antenna 814, and memory 812. These components may be connected by a bus or other means, with fig. 16 taking the example of a connection by a bus. Wherein:
the antenna 814 may be used to convert electromagnetic energy into electromagnetic waves in free space or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line.
The transceiver 806 may be used for performing transmit processing on signals output by the processor 804 and for performing receive processing on mobile communication signals received by the antenna 814.
In the present embodiment, the number of the transceivers 806 may be one or more.
The processor 804 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like.
In addition to the modules shown in fig. 16, the terminal 800 may also include other communication components, such as a GPS module, a Bluetooth (Bluetooth) module, a wireless fidelity (Wi-Fi) module, and the like. Not limited to the above-described wireless communication signals, terminal 800 can also support other wireless communication signals, such as satellite signals, short-wave signals, and so forth.
The input and output module may be used to enable interaction between the terminal 800 and a user/external environment, and may mainly include an audio input and output module 818, a key input module 816, a display 820, and the like. Specifically, the input/output module may further include: cameras, touch screens, sensors, and the like. The input and output modules are in communication with the processor 804 through the user interface 802.
A memory 812 is coupled to processor 804 for storing various software programs and/or sets of instructions. In particular, the memory 812 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 812 may store an operating system (hereinafter referred to simply as a system), such as an embedded operating system like ANDROID, IOS, WINDOWS, or LINUX. The memory 812 may also store a network communication program that may be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices. The memory 812 may further store a user interface program, which may vividly display the content of the application program through a graphical operation interface, and receive a control operation of the application program from a user through input controls such as menus, dialog boxes, and buttons.
In the embodiment of the present application, the memory 812 may be used to store an implementation program of the method for determining the terminal carrier aggregation capability provided in one or more embodiments of the present application on the terminal 800 side. For implementation of the method for determining carrier aggregation capability of a terminal provided in one or more embodiments of the present application, please refer to the following embodiments.
Processor 804 is operable to read and execute computer-readable instructions. Specifically, the processor 804 may be configured to invoke a program stored in the memory 812, for example, an implementation program of the method for determining the terminal carrier aggregation capability provided by one or more embodiments of the present application on the terminal 800 side, and execute instructions contained in the program to implement the method related to the subsequent embodiments. The processor 804 may support: one or more of global system for mobile communication (GSM) (2G) communication, Wideband Code Division Multiple Access (WCDMA) (3G) communication, and Long Term Evolution (LTE) (4G) communication, and future 5G communication, among others. Optionally, when the processor 804 sends any message or data, it does so, in particular by driving or controlling the transceiver 806. Optionally, when the processor 804 receives any message or data, it does so, in particular by driving or controlling the transceiver 806. Thus, the processor 804 may be considered a control center that performs transmission or reception, and the transceiver 806 is a specific performer for transmission and reception operations.
It is understood that the terminal 800 may be the terminal device 103 in the wireless communication system 100 shown in fig. 1, and may be implemented as a mobile device, a mobile station (mobile station), a mobile unit (mobile unit), a wireless unit, a remote unit, a user agent, a mobile client, or the like.
It should be noted that the terminal 800 shown in fig. 16 is only one implementation manner of the embodiment of the present application, and in practical applications, the terminal 800 may further include more or less components, which is not limited herein.
In the case of dividing each functional module by corresponding functions, fig. 17 shows a schematic diagram of a possible logical structure of the network device involved in the foregoing embodiments, and the network device 900 includes: a transmitting unit 901 and a receiving unit 902. The sending unit 901 is configured to support the steps of sending by the network device in the method embodiments shown in fig. 3 to fig. 14; the receiving unit 902 is configured to support the steps of receiving by the network device in the method embodiments shown in fig. 3 to fig. 14.
In terms of hardware implementation, the transmitting unit 901 may be a transceiver or a transceiver circuit, the receiving unit 902 may be a transceiver or a transceiver circuit, and the transmitting unit 901 and the receiving unit 902 may form a communication interface.
Fig. 18 is a schematic diagram of a possible hardware structure of a network device according to the foregoing embodiments, provided in this application. The network device 1000 may include: one or more processors 1001, memory 1002, network interface 1003, transceiver 1005, and antenna 1008. These components may be connected by a bus 1004, or otherwise, as illustrated in FIG. 10 by a bus connection. Wherein:
the processor 1001 may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like.
Network interface 1003 may be used for network device 1000 to communicate with other communication devices, such as other network devices. Specifically, the network interface 1003 may be a wired interface.
The transceiver 1005 may be used for transmit processing, e.g., signal modulation, of signals output by the processor 1001. The transceiver 1005 may also be used for receive processing of mobile communication signals received by the antenna 1008. Such as signal demodulation. In the network device 1000, the number of the transceivers 1005 may be one or more. The antenna 1008 may be used to convert electromagnetic energy in transmission lines to electromagnetic energy in free space, or vice versa.
The memory 1002 may be coupled to the processor 1001 via the bus 1004 or an input/output port, and the memory 1002 may be integrated with the processor 1001. The memory 1002 is used to store various software programs and/or sets of instructions. In particular, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 1002 may store an operating system (hereinafter, referred to as a system), such as an embedded operating system like uCOS, VxWorks, RTLinux, or the like. The memory 1002 may also store a network communication program that may be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.
Processor 1001 may be used to perform radio channel management, implement call and communication link setup and teardown, provide cell handover control for users within the control area, and the like. Specifically, the processor 1001 may include: an administration/communication module (AM/CM) (a center for voice channel exchange and information exchange), a Basic Module (BM) (for performing call processing, signaling processing, radio resource management, management of radio links, and circuit maintenance functions), a code conversion and sub-multiplexing unit (TCSM) (for performing multiplexing/demultiplexing and code conversion functions), and so on.
In the embodiment of the present application, the processor 1001 may be configured to read and execute computer readable instructions. Specifically, the processor 1001 may be configured to invoke a program stored in the memory 1002, for example, an implementation program of the method for determining the terminal carrier aggregation capability provided in one or more embodiments of the present application on the network device 1000 side, and execute instructions contained in the program.
It is to be understood that the network device 1000 may be the network device 101 in the wireless communication system 100 shown in fig. 1, and may be implemented as a NodeB, an eNodeB, a gNB, and so on.
It should be noted that the network device 1000 shown in fig. 18 is only one implementation manner of the embodiment of the present application, and in practical applications, the network device 1000 may further include more or less components, which is not limited herein.
Referring to fig. 19, fig. 19 shows a schematic structural diagram of a communication chip provided in the present application. As shown in fig. 19, communication core 1100 may include: a processor 1101, and one or more interfaces 1102 coupled to the processor 1101. Wherein:
the processor 1101 may be used to read and execute computer readable instructions. In particular implementations, processor 1101 may include primarily a controller, an operator, and registers. The controller is mainly responsible for instruction decoding and sending out control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for executing fixed-point or floating-point arithmetic operation, shift operation, logic operation and the like, and can also execute address operation and conversion. The register is mainly responsible for storing register operands, intermediate operation results and the like temporarily stored in the instruction execution process. In a specific implementation, the hardware architecture of the processor 1101 may be an Application Specific Integrated Circuit (ASIC) architecture, a microprocessor without interlocked pipeline (MIPS) architecture, an ARM architecture, or a Network Processor (NP) architecture, and the like. The processors 1101 may be single core or multicore.
The interface 1102 may be used to input data to be processed to the processor 1101, and may output a processing result of the processor 1101 to the outside. In a specific implementation, the interface 1102 may be a general purpose input/output (GPIO) interface, and may be connected to a plurality of peripheral devices (e.g., a display (LCD), a camera (camara), a Radio Frequency (RF) module, and the like). The interface 1102 is coupled to the processor 1101 by a bus 1103. Interface 1102 may also include a plurality of separate interfaces, such as an ethernet interface, an LCD interface, a Camera interface, etc., each responsible for communication between different peripherals and processor 1101.
In this application, the processor 1101 may be configured to invoke, from the memory, an implementation program on the terminal side for determining the terminal carrier aggregation capability provided in one or more embodiments of the present application, and execute instructions included in the program. The interface 1102 may be used to output the results of the execution by the processor 1101. For the method for determining the terminal carrier aggregation capability provided in one or more embodiments of the present application, reference may be made to the foregoing embodiments, and details are not described herein.
It should be noted that the functions corresponding to the processor 1101 and the interface 1102 may be implemented by hardware design, software design, or a combination of hardware and software, which is not limited herein. In addition, the memory (not shown) may include one or more memories, and the one or more memories may be disposed in the communication chip, may be an off-chip memory disposed outside the communication chip and coupled to the communication chip, or may be a combination of the memory in the communication chip and the off-chip memory.
Referring to fig. 20, fig. 20 shows a schematic structural diagram of a communication chip provided in the present application. As shown in fig. 20, the communication chip 120 may include: a processor 1201, and one or more interfaces 1202 coupled to the processor 1201. Wherein:
the processor 1201 may be configured to read and execute computer readable instructions. In a specific implementation, the processor 1201 may mainly include a controller, an operator, and a register. The controller is mainly responsible for instruction decoding and sending out control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for executing fixed-point or floating-point arithmetic operation, shift operation, logic operation and the like, and can also execute address operation and conversion. The register is mainly responsible for storing register operands, intermediate operation results and the like temporarily stored in the instruction execution process. In a specific implementation, the hardware architecture of the processor 1201 may be an ASIC architecture, an MIPS architecture, an ARM architecture, an NP architecture, or the like. The processors 1201 may be single core or multi-core.
The interface 1202 may be used to input data to be processed to the processor 1201, and may output a processing result of the processor 1201 to the outside.
The processor is coupled with the memory, and the memory may be disposed in the communication chip, may also be an off-chip memory disposed outside the communication chip and coupled with the communication chip, or may also be a combination of the memory in the communication chip and the off-chip memory.
In this application, the processor 1201 may be configured to invoke, from the memory, an implementation program of the method for determining carrier aggregation capability of a terminal provided in one or more embodiments of the present application on the communication device side, and execute instructions included in the program. The interface 1202 may be used to output the execution result of the processor 1201. For the method for determining the terminal carrier aggregation capability provided in one or more embodiments of the present application, reference may be made to the foregoing embodiments, and details are not described herein.
It should be noted that the functions corresponding to the processor 1201 and the interface 1202 may be implemented by hardware design, software design, or a combination of hardware and software, which is not limited herein.
In another embodiment of the present application, a computer storage medium is further provided, where the computer storage medium stores computer executable instructions, and when a device (which may be a single chip, a chip, or the like) or a processor may invoke the readable storage medium to store the computer executable instructions to perform the steps of determining carrier aggregation capability of a terminal or a network device provided in fig. 3 to 14. For a terminal, the aforementioned computer storage medium may include: read-only memory, random access memory, etc., may store program code. For a network device, the aforementioned computer storage media may comprise: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. may store the program code.
In another embodiment of the present application, there is also provided a computer program product comprising computer executable instructions stored in a computer readable storage medium; the computer executable instructions may be read by at least one processor of the device from a computer readable storage medium, and the execution of the computer executable instructions by the at least one processor causes the device to implement the steps of the terminal or the network device in the method for determining the carrier aggregation capability of the terminal provided in fig. 3 to 14.
In another embodiment of the present application, there is also provided a wireless communication system including a plurality of devices including a terminal and a network device. The terminal may be the terminal provided in fig. 15, and is configured to perform the steps of the terminal in the method for determining the carrier aggregation capability of the terminal provided in fig. 3 to 14. And/or the network device may be the network device provided in fig. 16 and configured to perform the steps of the network device in the method for determining the terminal carrier aggregation capability provided in fig. 3 to 14.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.

Claims (20)

1. A method for determining Carrier Aggregation (CA) capability of a terminal is characterized by comprising the following steps:
a terminal receives CA information of a cell sent by network equipment, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell;
and the terminal sends a second CA combination list to the network equipment, wherein the second CA combination list is determined by the terminal according to the CA information and the CA combination supported by the terminal, and the second CA combination list is used for the network equipment to determine the CA capability of the terminal.
2. The method of claim 1, wherein the cell comprises a cell that the terminal is ready to access or is accessing.
3. The method according to claim 1 or 2, wherein the terminal receives the CA information of the cell sent by the network device, and comprises:
the terminal receives a Radio Resource Control (RRC) connection establishment message sent by the network equipment, wherein the RRC connection establishment message carries the CA information;
the terminal sends a second CA combination list to the network device, including:
the terminal sends an RRC connection establishment completion message to the network equipment, wherein the RRC connection establishment completion message carries the second CA combination list; or, the terminal sends a terminal capability information message to the network device, where the terminal capability information message carries the second CA combination list; or, the terminal sends a first message to the network device, where the first message includes the second CA combination list.
4. The method according to claim 1 or 2, wherein the terminal receives the CA information of the cell sent by the network device, and comprises:
the terminal receives an RRC connection reestablishment message sent by the network equipment, wherein the RRC connection reestablishment message carries the CA information;
the terminal sends a second CA combination list to the network device, including:
the terminal sends an RRC connection reestablishment completion message to the network equipment, wherein the RRC connection reestablishment completion message carries the second CA combination list; or, the terminal sends a second message to the network device, where the second message includes the second CA combination list.
5. A method for determining carrier aggregation Capability (CA) capability of a terminal is characterized by comprising the following steps:
the method comprises the steps that network equipment sends CA information of a cell to a terminal, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the cell is located or a first CA combination list supported by the cell;
and the network equipment receives a second CA combination list sent by the terminal, wherein the second CA combination list is determined by the terminal according to the CA information and the CA combination supported by the terminal, and the second CA combination list is used for determining the CA capability of the terminal by the network equipment.
6. The method of claim 5, wherein the cell comprises a cell that the terminal is ready to access or is accessing.
7. The method according to claim 5 or 6, wherein the network device sends the CA information of the cell to the terminal, and comprises:
the network equipment sends a Radio Resource Control (RRC) connection establishment message to the terminal, wherein the RRC connection establishment message carries the CA information;
the network device receiving a second CA combination list sent by the terminal, including:
the network equipment receives an RRC connection establishment completion message sent by the terminal, wherein the RRC connection establishment completion message carries the second CA combination list; or, the network device receives a terminal capability information message sent by the terminal, where the terminal capability information message carries the second CA combination list; or, the network device receives a first message sent by the terminal, where the first message includes the second CA combination list.
8. The method according to claim 5 or 6, wherein the network device sends the CA information of the cell to the terminal, and comprises:
the network equipment sends RRC connection reestablishment information to the terminal, wherein the RRC connection reestablishment information carries the CA information;
the network device receiving a second CA combination list sent by the terminal, including:
the network equipment receives an RRC connection reestablishment completion message sent by the terminal, wherein the RRC connection reestablishment completion message carries the second CA combination list; or, the network device receives a second message sent by the terminal, where the second message includes the second CA combination list.
9. A method for determining Carrier Aggregation (CA) capability of a terminal is characterized by comprising the following steps:
a terminal receives CA information of a second cell sent by a first cell through first network equipment, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the second cell is located or a first CA combination list supported by the second cell;
and the terminal sends a second CA combination list to second network equipment, wherein the second CA combination list is determined by the terminal according to the CA information and the CA combination supported by the terminal, and the second CA combination list is used for the second network equipment to determine the CA capability of the terminal.
10. The method of claim 9, wherein the first cell is a cell where the terminal is currently located, and wherein the second cell is a cell to which the terminal is to be handed over.
11. The method according to claim 9 or 10, wherein the receiving, by the terminal, the CA information of the second cell sent by the first cell through the first network device comprises:
the terminal receives an RRC connection reconfiguration message sent by the first cell through first network equipment, wherein the RRC connection reconfiguration message carries the CA information;
the terminal sends a second CA combination list to a second network device, including:
the terminal sends an RRC connection reconfiguration complete message to the second network equipment, wherein the RRC connection reconfiguration complete message carries the second CA combination list; or, the terminal sends a fourth message to the second network device, where the fourth message carries the second CA combination list.
12. A method for determining Carrier Aggregation (CA) capability of a terminal is characterized by comprising the following steps:
the method comprises the steps that a first network device determines CA information of a second cell, wherein the CA information comprises a CA frequency band list where an auxiliary cell of the second cell is located or a first CA combination list supported by the second cell;
and the first network equipment sends the CA information to a terminal on a first cell.
13. The method of claim 12, wherein the first cell is a cell where the terminal is currently located, and wherein the second cell is a cell to which the terminal is to be handed over.
14. The method according to claim 12 or 13, wherein the first network device sends the CA information to the terminal on the first cell, comprising:
and the first network equipment sends an RRC connection reconfiguration message to the terminal on the first cell, wherein the RRC connection reconfiguration message carries the CA information.
15. A method for determining Carrier Aggregation (CA) capability of a terminal is characterized by comprising the following steps:
the method comprises the steps that a second network device receives a second CA combination list sent by a terminal, wherein the second CA combination list is determined by the terminal according to CA information of a second cell and CA combinations supported by the terminal, the CA information comprises a CA frequency band list where an auxiliary cell of the second cell is located or a first CA combination list supported by the second cell, the second CA combination list is used for the second network device to determine CA capacity of the terminal, and the CA information is sent by the first cell through the first network device.
16. A terminal, comprising: a processor, a memory and a transceiver, the processor, the memory and the transceiver being interconnected, the memory being configured to store program code, the processor being configured to invoke the program code in the memory to perform the method of determining CA capabilities of a terminal as claimed in any one of claims 1 to 4.
17. A network device, comprising: a processor, a memory and a transceiver, said processor, said memory and said transceiver being interconnected, said memory for storing program code, said processor for invoking the program code in said memory to perform the method of determining CA capabilities of a terminal of any of claims 5 to 8.
18. A terminal, comprising: a processor, a memory and a transceiver, said processor, said memory and said transceiver being interconnected, said memory for storing program code, said processor for invoking program code in said memory to perform the method of determining terminal CA capabilities of claim 9 or 10.
19. A network device, wherein the network device is a first network device, and wherein the first network device comprises: a processor, a memory and a transceiver, said processor, said memory and said transceiver being interconnected, said memory for storing program code, said processor for invoking program code in said memory to perform the method of determining terminal CA capabilities of claim 11 or 12.
20. A network device, wherein the network device is a second network device, and wherein the second network device comprises: a processor, a memory and a transceiver, said processor, said memory and said transceiver being interconnected, said memory for storing program code, said processor for invoking program code in said memory to perform the method of determining terminal CA capabilities of claim 13 or 14.
CN201811619481.9A 2018-12-27 2018-12-27 Method for determining carrier aggregation capability of terminal and related equipment Pending CN111385789A (en)

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