CN109275200B - Double-connection establishing method and network equipment - Google Patents

Double-connection establishing method and network equipment Download PDF

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Publication number
CN109275200B
CN109275200B CN201811095940.8A CN201811095940A CN109275200B CN 109275200 B CN109275200 B CN 109275200B CN 201811095940 A CN201811095940 A CN 201811095940A CN 109275200 B CN109275200 B CN 109275200B
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frequency domain
domain resource
network device
terminal
configuration information
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CN109275200A (en
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韩潇
王友祥
朱常波
范斌
梁辉
李轶群
冯毅
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a double-connection establishing method and network equipment, relates to the field of communication, and can realize double connection between the same terminal and two heterogeneous communication systems by adopting an uplink resource frequency division multiplexing mode. The method is applied to a first network device supporting a first standard, and an ideal backhaul interface exists between the first network device and a second network device supporting a second standard, and the method comprises the following steps: and sending the configuration information of the first frequency domain resource to the first terminal and the second network equipment so that the second network equipment sends the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource. And then, the first network equipment receives the uplink signal of the first standard sent by the first terminal on the first frequency domain resource, and the second network equipment receives the uplink signal of the second standard sent by the first terminal on the second frequency domain resource. Wherein the first frequency domain resource and the second frequency domain resource belong to the same carrier, and there is no intersection.

Description

Double-connection establishing method and network equipment
Technical Field
The present application relates to the field of communications, and in particular, to a dual connectivity establishment method and network device.
Background
A Dual Connection (DC) refers to a terminal, such as a User Equipment (UE), a mobile phone, and the like, which is connected to two communication systems of different systems at the same time, so as to improve resource utilization, improve system capacity, reduce switching delay, improve communication quality, and the like. For example, the same terminal simultaneously maintains connection with a fourth generation (4G) communication system such as Long Term Evolution (LTE) and a fifth generation (5G) communication system such as New Radio (NR).
Currently, dual connectivity between a terminal and different communication systems requires maintaining two independent connections simultaneously in both Uplink (UL) and Downlink (DL) directions. For example, the same terminal needs to maintain uplink and downlink connections with the communication system 1 on frequency band (band) a and maintain uplink and downlink connections with the communication system 2 on frequency band B.
However, some terminals do not support maintaining dual connectivity in the uplink direction with different communication systems for reasons of cost, power consumption, etc., thereby causing the terminals to be unable to communicate with different communication systems simultaneously using the dual connectivity technique.
Disclosure of Invention
The application provides a dual-connection establishing method and network equipment, which can establish uplink dual-connection between the same terminal and two communication systems of different standards in an uplink direction by adopting a frequency division multiplexing mode.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, the present application provides a dual connectivity establishment method, applied to a first network device. The first network device is used for supporting a first standard, an ideal backhaul interface exists between the first network device and the second network device, and the second network device is used for supporting a second standard. The method comprises the following steps: and sending the configuration information of the first frequency domain resource to the first terminal and the second network equipment. The first frequency domain resource is used for the first terminal to send the uplink signal of the first standard, and is used for the second network device to determine the second frequency domain resource, the second frequency domain resource is used for the first terminal to send the uplink signal of the second standard, the second frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists. And then, receiving the uplink signal of the first standard sent by the first terminal on the first frequency domain resource.
In a second aspect, a dual connectivity establishment method is provided, which is applied to a second network device. The second network device is used for supporting a second standard, an ideal backhaul interface exists between the second network device and the first network device, and the first network device is used for supporting a first standard. The method comprises the following steps: and receiving configuration information of the first frequency domain resource sent by the first network equipment. The first frequency domain resource is used for the first terminal to send the uplink signal of the first system. And then, according to the configuration information of the first frequency domain resource, the configuration information of the second frequency domain resource is sent to the first terminal. The second frequency domain resource is used for the first terminal to send the uplink signal of the second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave, and no intersection exists. And then, receiving the uplink signal of the second standard sent by the first terminal on the second frequency domain resource.
In a third aspect, a network device is provided for supporting a first standard. The network device serves as an ideal backhaul interface between the first network device and a second network device, and the second network device is used for supporting a second standard. The network device includes: the device comprises a sending module, a receiving module and a storage module. The sending module is configured to send configuration information of the first frequency domain resource to the first terminal and the second network device. The first frequency domain resource is used for the first terminal to send the uplink signal of the first standard, and is used for the second network device to determine the second frequency domain resource, the second frequency domain resource is used for the first terminal to send the uplink signal of the second standard, the second frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists. The receiving module is configured to receive, on a first frequency domain resource, an uplink signal of a first standard sent by a first terminal. And the storage module is used for storing instructions and data.
In a fourth aspect, a network device is provided for supporting a second standard. The network device serves as an ideal backhaul interface between the second network device and the first network device, and the first network device is used for supporting the first standard. The network device includes: the device comprises a sending module, a receiving module and a storage module. The receiving module is configured to receive configuration information of a first frequency domain resource sent by a first network device. The first frequency domain resource is used for the first terminal to send the uplink signal of the first system. And the sending module is used for sending the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource. The second frequency domain resource is used for the first terminal to send the uplink signal of the second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave, and no intersection exists. And the receiving module is further configured to receive, on the second frequency domain resource, the uplink signal of the second standard sent by the first terminal. And the storage module is used for storing instructions and data.
In a fifth aspect, the present application provides a network device, comprising: a processor, a transceiver, and a memory. Wherein the memory is used to store one or more programs. The one or more programs include computer executable instructions that, when executed by the network device, cause the network device to perform the dual connectivity establishment method of the first aspect and any of its various alternative implementations.
In a sixth aspect, the present application provides a network device, comprising: a processor, a transceiver, and a memory. Wherein the memory is used to store one or more programs. The one or more programs include computer executable instructions that, when executed by the network device, cause the network device to perform the dual connectivity establishment method of the second aspect and any of its various alternative implementations.
In a seventh aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a computer, the computer performs the dual connectivity establishment method described in any one of the first aspect and various alternative implementations thereof.
In an eighth aspect, the present application provides a computer-readable storage medium, in which instructions are stored, and when the instructions are executed by a computer, the computer performs the dual connectivity establishment method described in any one of the second aspect and various alternative implementations thereof.
In a ninth aspect, the present application provides a communication system comprising a first terminal, a first network device and a second network device as described in any of the first aspect, the second aspect and the various alternative implementations of the two aspects.
The dual-connection establishment method and the network equipment provided by the application can indicate that the terminal which cannot establish independent uplink dual-connection with the network equipment of different systems in the uplink direction can not establish independent uplink dual-connection respectively, and simultaneously send the uplink signal of the first system and the uplink signal of the second system on the same carrier wave in a frequency division multiplexing mode, namely, the dual-connection of single-transmission dual-reception in the uplink direction and dual-transmission dual-reception in the downlink direction can be established between the terminal and the network equipment of different systems, so that the terminal can simultaneously communicate with the network equipment of different systems by using the dual-connection technology, the application range of the dual-connection technology is expanded, and the communication capability of the terminal can be improved.
Drawings
Fig. 1A is a first schematic structural diagram of a communication system to which a dual connectivity establishment method and a network device according to an embodiment of the present application are applied;
fig. 1B is a schematic structural diagram of a communication system to which the dual connectivity establishment method and the network device according to the embodiment of the present application are applied;
fig. 2 is a first flowchart illustrating a dual connectivity establishment method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a dual connectivity establishment method according to an embodiment of the present application;
fig. 4 is a first schematic structural diagram of a first network device according to an embodiment of the present application;
fig. 5 is a first schematic structural diagram of a second network device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a first network device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a second network device according to an embodiment of the present application.
Detailed Description
The dual connectivity establishment method and the network device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
The terms "first" and "second" and the like in the description and drawings of the present application are used for distinguishing different objects or for distinguishing different processes for the same object, and are not used for describing a specific order of the objects.
Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, 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 but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the present application, the meaning of "a plurality" means two or more unless otherwise specified.
The dual connectivity establishment method provided in the embodiment of the present application may be applied to the heterogeneous communication system capable of supporting dual connectivity shown in fig. 1A. The "heterogeneous" means that the communication system can support mobile communication of at least two systems. The term "dual connectivity" refers to the connection of the same terminal and the heterogeneous communication system in two systems. For example, the heterogeneous communication system may be a communication system supporting 5G mobile communication and 4G mobile communication. Of course, the heterogeneous communication system may also be another heterogeneous communication system that can support dual connectivity, and the embodiments of the present application are not limited.
As shown in fig. 1A, the heterogeneous communication system may include: a terminal 101, a first network device 102 and a second network device 103. The terminal 101 may be configured to connect to a first network device 102 and a second network device 103 deployed by an operator over a wireless air interface, and then access a data network (not shown in fig. 1A); the first network device 102 and the second network device 103 are mainly used for establishing dual connectivity of the terminal 101 with the heterogeneous communication system. For example, a first connection is established between the terminal 101 and the first network device 102 to support mobile communication of a first standard, and a second connection is established between the terminal 101 and the second network device 103 to support mobile communication of a second standard. The first network device 102 and the second network device 103 may then act as intermediate nodes connecting the terminal 101 with the data network and provide network services, such as voice and/or data, for the terminal 101.
The first network device 102 and the second network device 103 may be base stations. The base station may be an evolved node B (eNB) and/or an advanced evolved node B (eNB) in a 4G system such as an LTE system, or may also be an NR base station gNB in a 5G system, which is not limited in this application.
The first network device 102 and the second network device 103 are connected to each other via an ideal backhaul interface 104. The ideal backhaul interface 104 is an interface with a transmission delay smaller than a preset delay threshold, and is mainly used for exchanging signaling and/or data between the first network device 102 and the second network device 103. For example, the ideal backhaul interface 104 may be a fiber interface between the first network device 102 and the second network device 103, whose transmission delay is less than a preset delay threshold. The predetermined delay threshold is usually a small value, for example, 100 microseconds (microsecond). Of course, the ideal backhaul interface 104 may also be other types of interfaces with a transmission delay smaller than the preset delay threshold, which is not limited in this embodiment.
In practical applications, the first network device 102 and the second network device 103 may be the same network device. Illustratively, as shown in fig. 1B, the first network device 102 and the second network device 103 may be co-sited deployed as a third network device 105.
The terminal may be any type of terminal that can establish uplink and downlink single links of a first standard and a second standard with the first network device and the second network device, but does not support establishment of a dual connection with the first network device and the second network device, or may be any type of terminal that supports establishment of a dual connection with the first network device and the second network device, which is not limited in this application. For example, the terminal may be a UE, such as: a handset, may also be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a smart phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a laptop, a handheld communication device, a handheld computing device, a satellite radio, a wireless modem card, a Set Top Box (STB), a Customer Premises Equipment (CPE), and/or other devices used to communicate over a communication system.
It should be noted that fig. 1A and fig. 1B are only exemplary architecture diagrams, and besides the functional units shown in fig. 1A and fig. 1B, the network architecture may further include other functional units, which is not limited in this embodiment of the present application.
The embodiment of the present application provides a dual connectivity establishment method, which may be applied to the first network device 102 and the second network device 103 shown in fig. 1A, and may also be applied to the third network device 105 shown in fig. 1B. The first network device 102 is configured to support a first standard, an ideal backhaul interface exists between the first network device 102 and the second network device 103, the second network device 103 is configured to support a second standard, and the third network device 105 is a co-located network device and configured to support the first standard and the second standard.
The following describes in detail a dual connectivity establishment method provided in the embodiment of the present application, by taking the heterogeneous communication system shown in fig. 1A as an example.
As shown in fig. 2, the method includes S201-S210:
s201, the first network device sends configuration information of the first frequency domain resource to the first terminal.
S202, the first terminal receives configuration information of the first frequency domain resource sent by the first network equipment.
The first frequency domain resource is used for the first terminal to send the uplink signal of the first system.
For example, the first network device may carry configuration information of the first frequency domain resource through Radio Resource Control (RRC) signaling of the first system, such as signaling of RRC establishment/re-establishment/reconfiguration, and send the configuration information to the first terminal. Since RRC signaling is a prior art, details of the embodiments of the present application are not described herein.
Specifically, the first frequency domain resource refers to a frequency domain resource allocated to the first terminal and used for transmitting an uplink signal of the first standard. For example, the first standard may be LTE, and the first frequency domain resource may be a certain number of subcarriers (subcarriers), Resource Blocks (RBs), and the like allocated for the first terminal. Of course, frequency domain resources may generally be viewed as frequency domain resources over one or more time units. The time unit may be a symbol (symbol), a slot (slot), a subframe (subframe), a radio frame (frame), or the like. In view of the fact that frequency domain resources are the prior art, the embodiments of the present application are not described again.
For example, the uplink signal of the first system may include signaling and data, such as a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH), a Positioning Reference Signal (PRS), a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a Sounding Reference Signal (SRS), a Physical Uplink Shared Channel (PUSCH), and the like.
S203, the first network device sends configuration information of the first frequency domain resource to the second network device.
S204, the second network device receives the configuration information of the first frequency domain resource sent by the first network device.
The configuration information of the first frequency domain resource is used for the second network equipment to determine the second frequency domain resource.
Illustratively, the first network deviceVia an ideal backhaul interface between it and a second network device, e.g. XnInterface, X2And the interface is used for sending the configuration information of the first frequency domain resource to the second network equipment so that the second network equipment can allocate the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource.
Illustratively, the configuration information of the first frequency domain resource may include, but is not limited to, periodic configuration information and aperiodic configuration information.
The periodic configuration information may include: the configuration information of the periodic SRS, such as the transmission period of the SRS, and the configuration information of the PRACH, such as the transmission period of the PRACH, the number of RBs allocated for the PRACH, and the starting transmission position. Wherein, the sending period can be set according to actual requirements. For example, the transmission period of the periodic SRS may be set to different values such as 5ms and 10 ms.
Illustratively, the aperiodic configuration information may include: configuration information of the PUSCH, such as the position of the starting RB of the PUSCH, the number of RBs, and the like, and configuration information of the aperiodic SRS, and the like. Of course, the aperiodic configuration information may be triggered and stopped by a network event, or the number of times of sending the aperiodic configuration information may be set according to the actual situation. For example, for the PUSCH, the PUSCH needs to be transmitted all the time as long as there is uplink control information and/or data that needs to be transmitted, and when there is no uplink control information and data that needs to be transmitted, transmission of the PUSCH is stopped. For another example, for the aperiodic SRS, a preset number of transmission times of the aperiodic SRS may be configured in advance, and when the actual number of transmission times reaches the preset number of transmission times, the transmission of the aperiodic SRS is automatically stopped.
It should be noted that the execution order of S201-S202 and S203-S204 is not necessarily limited in the embodiments of the present application. For example, S201-S202 may be executed first, and then S203-S204 may be executed, S203-S204 may be executed first, and then S201-S202 may be executed, S201 may be executed first, then S203-S204 may be executed, and then S202 may be executed, or S203 may be executed first, then S201-S202 may be executed, and then S204 may be executed.
S205, the second network device sends the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource.
S206, the first terminal receives the configuration information of the second frequency domain resource sent by the second network equipment.
The second frequency domain resource is used for the first terminal to send the uplink signal of the second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave, and no intersection exists.
Similar to the configuration information of the first frequency domain resource, the configuration information of the second frequency domain resource may also be carried in the RRC signaling of the second system, and sent to the first terminal by the second network device, which is not described in detail in this embodiment of the present application.
Exemplarily, the second frequency domain resource refers to a frequency domain resource allocated to the first terminal and used for transmitting the uplink signal of the second standard. The second standard may be NR, and the second frequency domain resource may be a certain number of subcarriers, RBs, and the like allocated to the first terminal. Of course, frequency domain resources may generally be viewed as frequency domain resources over one or more time units. The time unit may be a symbol, a slot, a subframe, a radio frame, etc. In view of the fact that frequency domain resources are the prior art, the embodiments of the present application are not described again.
Similar to the uplink signal of the first system, the uplink signal of the second system may also include signaling and data, which is not described in detail in this embodiment.
It should be noted that, in order to avoid resource collision, the second frequency domain resource allocated to the first terminal by the second network device is staggered from the first frequency domain resource. In addition, in order to implement the single transmission of the first terminal in the uplink direction and reduce the power consumption of the first terminal, the second frequency domain resource and the first frequency domain resource are usually frequency domain resources on the same carrier. The same carrier may be a carrier of a first system or a carrier of a second system, which is not limited in this embodiment of the present application. It can be understood that, when the same carrier is a carrier of a second standard, the first network device in this embodiment is configured to support the second standard, and the second network device is configured to support the first standard.
Illustratively, the first scheme may be LTE, and the second scheme may be NR. Uplink signals of the first system, for example, signaling, may be sent on a PUCCH, and uplink signals of the second system may be sent on a PUSCH, so as to reduce the number of control resources allocated to the first terminal for establishing the dual connection, for example, the number of occupied RBs of the PUCCH, so as to reserve more control resources for establishing a single connection between another terminal and the first network device, and thus, the number of terminals accessing the first network device can be effectively increased, and thus, the system capacity of the heterogeneous communication system is increased.
Compared with the downlink direction, the amount of data that needs to be transmitted in the uplink direction is small, and for example, a small amount of control information such as a Channel Quality Indicator (CQI), a hybrid automatic repeat request (HARQ) Acknowledgement (ACK)/non-acknowledgement (NACK) feedback information, and a small amount of user data. In view of this, when the PUCCH is sufficient to carry the uplink signal of the first system and the uplink signal of the second system, both the uplink signal of the first system and the uplink signal of the second system may be transmitted on the PUCCH. For the allocation manner of the first frequency domain resource and the second frequency domain resource, the embodiments of the present application are not limited, as long as it is ensured that the first frequency domain resource and the second frequency domain resource do not conflict.
S207, the first terminal sends the uplink signal of the first standard on the first frequency domain resource.
And S208, the first terminal sends the uplink signal of the second standard on the second frequency domain resource.
It should be noted that, the first frequency domain resource and the second frequency domain resource do not conflict with each other, and the first frequency domain resource and the second frequency domain resource may be different frequency domain resources on the same symbol. Therefore, the first terminal may send the uplink signal of the first system and the uplink signal of the second system on the same symbol, that is, the first terminal may send the uplink signal of the first system and the uplink signal of the second system at the same time, thereby implementing single sending in the uplink direction.
S209, the first network device receives, on the first frequency domain resource, the uplink signal of the first standard sent by the first terminal.
S210, the second network equipment receives the uplink signal of the second standard sent by the first terminal on the second frequency domain resource.
In view of that the first frequency domain resource and the second frequency shift resource are frequency domain resources on the same carrier and do not conflict with each other, the first terminal may send the uplink signal of the first system on the first frequency domain resource and send the uplink signal of the second system on the second frequency domain resource. Accordingly, the first network device and the second network device can respectively receive uplink signals of respective systems on the first frequency domain resource and the second frequency domain resource, so that single-transmission double-reception in the uplink direction and double-transmission double-reception in the downlink direction can be established between the first terminal and the first network device and the second network device, a terminal which does not support establishment of independent double-connection in the uplink direction is not supported, the double-connection technology can be used for simultaneously communicating with network devices of different systems, the application range of the double-connection technology can be expanded, and the communication capability of the terminal can be improved.
In practical applications, the first network device may also establish a single connection of the first system with another terminal, such as a second terminal, other than the first terminal. In order to ensure that both the first terminal and the second terminal can communicate with the first network device, optionally, in conjunction with fig. 2, as shown in fig. 3, before performing S205, the second network device sends the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource, the method may further include S301-S304:
s301, the first network equipment sends the configuration information of the third frequency domain resource to the second terminal.
S302, the second terminal receives the configuration information of the third frequency domain resource sent by the first network equipment.
The third frequency domain resource is used for the second terminal to send the uplink signal of the first standard, and the third frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists.
Illustratively, the allocation method of the third frequency domain resources is the same as the first frequency domain resources. It will be appreciated that the third frequency domain resources also need to be staggered from the first frequency domain resources to avoid collisions.
S303, the first network device sends the configuration information of the third frequency domain resource to the second network device.
S304, the second network device receives the configuration information of the third frequency domain resource sent by the first network device.
The configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource are used for the second network device to determine the second frequency domain resource.
For example, the first network device may transmit the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource to the second network device at different times. For example, the configuration information of the first frequency domain resource is sent to the second network device at the first time, and the configuration information of the third frequency domain resource is sent to the second network device at the second time. Of course, the first network device may send the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource to the second network device at the same time. For example, the first network device sends the same signaling carrying the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource to the second network device.
It should be noted that the execution order of S301 to S304 and S201 to S204 is not limited in the embodiments of the present application. For example, S301-S304 may be executed first, and then S201-S204 may be executed, or S201-S204 may be executed first, and then S301-S304 may be executed. In addition, the execution sequence of S301 to S302 and S303 to S304 is not limited in the embodiments of the present application. For example, S301 to S302 may be executed first, and then S303 to S304 may be executed first, and then S301 to S302 may be executed, or S301 may be executed first, then S303 to S304 may be executed, and then S302 may be executed, or S303 may be executed first, then S301 to S302 may be executed, and then S304 may be executed.
In order to avoid that the second network device repeatedly allocates the second frequency domain resource to the first terminal due to resource collision when allocating the second frequency domain resource to the first terminal, thereby reducing the resource allocation efficiency, S205 the second network device sends the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource, which may be specifically implemented as S305:
s305, the second network device sends the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource.
The second frequency domain resource and the third frequency domain resource belong to the same carrier, and no intersection exists, so that the second frequency domain resource is ensured to be not in conflict with the first frequency domain resource and the third frequency domain resource.
Illustratively, one subframe of the LTE system and one subframe of the NR system are both 1 millisecond (ms) in duration. For LTE single connectivity, the first network device typically instructs the terminal to transmit SRS on the last symbol of the subframe. Assuming that the third frequency domain resource is a frequency domain resource on the last symbol of the subframe, the first frequency domain resource may be allocated as follows:
the first frequency domain resource is also the frequency domain resource on the last symbol of the subframe, but the first frequency domain resource is not overlapped with the third frequency domain resource. For example, the first frequency-domain resource and the second frequency-domain resource are both one terminal in a comb configuration of SRS. In view of the comb configuration in the prior art, the embodiments of the present application are not described in detail.
Accordingly, the second frequency domain resources may be allocated in one of the following ways:
the first method is as follows: and the second frequency domain resource bears data in a punching mode.
The second method comprises the following steps: and allocating a second frequency domain resource on the subframe by adopting a short slot (mini slot) based uplink scheduling mode. The short slot may be configured with a plurality of symbols, for example, 2, 3, 4, and 7 symbols.
Thereafter, the method may further include S306-S307:
s306, the second terminal sends the uplink signal of the first standard on the third frequency domain resource.
It should be noted that the execution order of S306 and S207-S208 is not limited in the embodiments of the present application. For example, S306 may be executed first, and then S207-S208 may be executed, S207-S208 may be executed first, and then S306 may be executed, or S306 and S207-S208 may be executed simultaneously.
S307, the first network equipment receives the uplink signal of the first standard sent by the second terminal on the third frequency domain resource.
In other words, the first network device receives, on different frequency domain resources, uplink signals of the first standard sent by different terminals, respectively, so as to ensure that the different terminals can implement communication of the first standard with the first network device.
It should be noted that the example shown in fig. 3 is described by taking the connection between the second terminal and the first network device as a single connection. In fact, the dual connectivity establishment method provided by the embodiment of the present application is also applicable to a scenario in which the second terminal has dual connectivity with the first network device and the second network device at the same time.
Exemplarily, if the second terminal also needs to establish dual connectivity with the first network device and the second network device, S304 the second network device sends the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource, which may be implemented as the following steps:
and the second network equipment sends the configuration information of the second frequency domain resource to the first terminal and sends the configuration information of the fourth frequency domain resource to the second terminal according to the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource.
The fourth frequency domain resource is used for the second terminal to send the uplink signal of the second standard to the second network device, and the first frequency domain resource, the second frequency domain resource, the third frequency domain resource and the fourth frequency domain resource all belong to the same carrier, and no intersection exists among the first frequency domain resource, the second frequency domain resource, the third frequency domain resource and the fourth frequency domain resource.
The dual-connection establishing method provided by the embodiment of the application can indicate a terminal which cannot establish independent uplink dual-connection with network devices of different systems in an uplink direction respectively, and simultaneously transmit an uplink signal of a first system and an uplink signal of a second system on the same carrier wave in a frequency division multiplexing mode, that is, a dual-connection of single-transmission and dual-reception in the uplink direction and dual-transmission and dual-reception in a downlink direction can be established between the terminal and the network devices of different systems, so that the terminal can simultaneously communicate with the network devices of different systems by using a dual-connection technology, the application range of the dual-connection technology can be expanded, and the communication capability of the terminal can be improved.
In the embodiment of the present application, the first network device may be divided into the functional modules or the functional units according to the above method examples, for example, each functional module or functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in a form of hardware, or may be implemented in a form of a software functional module or a functional unit. The division of the modules or units in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Fig. 4 shows a schematic diagram of a possible structure of the first network device involved in the above embodiments. The first network device is used for supporting a first standard, an ideal backhaul interface exists between the first network device and the second network device, and the second network device is used for supporting a second standard.
As shown in fig. 4, the first network device includes: a sending module 401, a receiving module 402 and a storing module 403.
The sending module 401 is configured to send configuration information of a first frequency domain resource to a first terminal; the first frequency domain resource is used for the first terminal to send the uplink signal of the first standard;
a sending module 401, configured to send configuration information of the first frequency domain resource to the second network device; the configuration information of the first frequency domain resource is used for the second network equipment to determine a second frequency domain resource, the second frequency domain resource is used for the first terminal to send the uplink signal of the second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave and do not have intersection;
a receiving module 402, configured to receive, on a first frequency domain resource, an uplink signal of a first standard sent by a first terminal;
the storage module 403 is used for storing instructions and data.
Optionally, the sending module 401 is further configured to send configuration information of a third frequency domain resource to the second terminal; the third frequency domain resource is used for the second terminal to send the uplink signal of the first standard, the third frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists;
the sending module 401 is further configured to send configuration information of the first frequency domain resource and configuration information of the third frequency domain resource to the second network device; the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource are used for the second network equipment to determine the second frequency domain resource, and the second frequency domain resource and the third frequency domain resource belong to the same carrier, and no intersection exists;
the receiving module 402 is further configured to receive, on the first frequency domain resource, the uplink signal of the first standard sent by the first terminal, and receive, on the third frequency domain resource, the uplink signal of the first standard sent by the second terminal.
Fig. 5 shows a schematic diagram of a possible structure of the second network device involved in the above embodiments. The second network device is used for supporting a second standard, an ideal backhaul interface exists between the second network device and the first network device, and the first network device is used for supporting a first standard.
As shown in fig. 5, the second network device includes: a sending module 501, a receiving module 502 and a storage module 503.
The receiving module 502 is configured to receive configuration information of a first frequency domain resource sent by a first network device; the first frequency domain resource is used for the first terminal to send the uplink signal of the first standard;
a sending module 501, configured to send configuration information of a second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource; the second frequency domain resource is used for the first terminal to send uplink signals of a second standard, the second frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists;
a receiving module 502, configured to receive, on a second frequency domain resource, an uplink signal of a second standard sent by the first terminal;
the storage module 503 is used for storing instructions and data.
Optionally, the receiving module 502 is further configured to receive configuration information of a third frequency domain resource sent by the first network device; the third frequency domain resource is used for the second terminal to send the uplink signal of the first standard, the third frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists;
the sending module 501 is further configured to send configuration information of a second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource; and the second frequency domain resource and the third frequency domain resource belong to the same carrier, and no intersection exists.
The first network device and the second network device provided in the embodiment of the application can indicate a terminal that cannot establish independent uplink dual-connection with network devices of different systems in an uplink direction, and simultaneously send an uplink signal of a first system and an uplink signal of a second system on the same carrier wave in a frequency division multiplexing manner, that is, a single-transmission dual-reception in the uplink direction and a dual-transmission dual-reception dual-connection in a downlink direction can be established between the terminal and the network devices of different systems, so that the terminal can simultaneously communicate with the network devices of different systems by using a dual-connection technology, the application range of the dual-connection technology can be expanded, and the communication capability of the terminal can be improved.
Fig. 6 shows a schematic diagram of another possible structure of the first network device involved in the above embodiments. The first network device includes: a processing unit 601 and a communication unit 602. The processing unit 601 is used for controlling and managing the actions of the first network device, for example, performing the steps performed by the storage module 403 described above, and/or other processes for performing the techniques described herein. The communication unit 602 is configured to support communication between the first network device and other network entities, for example, perform the steps performed by the sending module 401 and the receiving module 402. The first network device may further comprise a storage unit 603 and a bus 604, the storage unit 603 being adapted to store program codes and data of the first network device.
The processing unit 601 may be a processor or controller in the first network device, which may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the present application. The processor or controller may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, 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, DSPs, and microprocessors, among others.
The communication unit 602 may be a transceiver, a transceiving circuit or a communication interface in the first network device, etc.
The storage unit 603 may be a memory in the first network device, etc., which may include a volatile memory, such as a random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.
The bus 604 may be an Extended Industry Standard Architecture (EISA) bus or the like. The bus 604 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
Fig. 7 shows a schematic diagram of another possible structure of the second network device involved in the above embodiments. The second network device includes: a processing unit 701 and a communication unit 702. The processing unit 701 is configured to control and manage actions of the second network device, for example, to perform the steps performed by the storage module 503, and/or to perform other processes of the techniques described herein. The communication unit 702 is configured to support communication between the second network device and other network entities, for example, perform the steps performed by the sending module 501 and the receiving module 502. The first network device may further comprise a memory unit 703 and a bus 704, the memory unit 703 being adapted to store program codes and data of the first network device.
The processing unit 701 may be a processor or a controller in the first network device, which may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the present application. The processor or controller may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, 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, DSPs, and microprocessors, among others.
The communication unit 702 may be a transceiver, a transceiving circuit or a communication interface, etc. in the first network device.
The storage unit 703 may be a memory in the first network device, which may include a volatile memory, such as a random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.
The bus 704 may be an EISA bus or the like. The bus 704 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
The embodiment of the present application provides a communication system, which may include a first network device, a second network device, and a terminal, where the first network device and the second network device are configured to execute the dual connectivity establishment method provided in the embodiment of the present application. For specific descriptions of the first network device, the second network device, and the terminal, reference may be made to the related descriptions in the foregoing method embodiment and apparatus embodiment, and details are not described here again.
It is clear to those skilled in the art from the description of the embodiments that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
The embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer executes the instructions, the computer may perform each step performed by the network device in the method flow shown in the foregoing method embodiment.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a register, a hard disk, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, any suitable combination of the above, or any other form of computer readable storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A dual-connection establishment method is characterized in that the method is applied to a first network device, the first network device is used for supporting a first standard, an ideal backhaul interface exists between the first network device and a second network device, and the second network device is used for supporting a second standard;
the dual connectivity establishment method comprises the following steps:
sending configuration information of a first frequency domain resource to a first terminal; the first frequency domain resource is used for the first terminal to send an uplink signal of a first standard;
sending configuration information of the first frequency domain resource to the second network device; the configuration information of the first frequency domain resource is used for the second network device to determine a second frequency domain resource, the second frequency domain resource is used for the first terminal to send an uplink signal of a second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave and do not have an intersection;
and receiving the uplink signal of the first standard sent by the first terminal on the first frequency domain resource.
2. The dual connectivity establishment method of claim 1, further comprising:
sending the configuration information of the third frequency domain resource to the second terminal; the third frequency domain resource is used for the second terminal to send an uplink signal of a first standard, and the third frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists;
sending configuration information of the third frequency domain resource to the second network equipment; the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource are used by the second network device to determine the second frequency domain resource, and the second frequency domain resource and the third frequency domain resource belong to the same carrier, and no intersection exists;
and receiving the uplink signal of the first standard sent by the second terminal on the third frequency domain resource.
3. A dual-connection establishment method is characterized in that the method is applied to second network equipment, the second network equipment is used for supporting a second standard, an ideal backhaul interface exists between the second network equipment and first network equipment, and the first network equipment is used for supporting a first standard;
the dual connectivity establishment method comprises the following steps:
receiving configuration information of a first frequency domain resource sent by the first network equipment; the first frequency domain resource is used for a first terminal to send an uplink signal of a first standard;
sending configuration information of a second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource; the second frequency domain resource is used for the first terminal to send an uplink signal of a second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave and do not have an intersection;
and receiving the uplink signal of the second standard sent by the first terminal on the second frequency domain resource.
4. The method of claim 3, wherein before the sending the configuration information of the second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource, the method further comprises:
receiving configuration information of a third frequency domain resource sent by the first network equipment; the third frequency domain resource is used for a second terminal to send an uplink signal of a first standard, and the third frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists;
the sending, according to the configuration information of the first frequency domain resource, the configuration information of a second frequency domain resource to the first terminal includes:
sending configuration information of a second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource; wherein the second frequency domain resource and the third frequency domain resource belong to the same carrier, and there is no intersection.
5. A network device is characterized in that the network device is used for supporting a first standard, the network device is used as an ideal backhaul interface between the first network device and a second network device, and the second network device is used for supporting a second standard;
the network device includes: a transmitting module and a receiving module; wherein the content of the first and second substances,
the sending module is configured to send configuration information of the first frequency domain resource to the first terminal; the first frequency domain resource is used for the first terminal to send an uplink signal of a first standard;
the sending module is further configured to send configuration information of the first frequency domain resource to the second network device; the configuration information of the first frequency domain resource is used for the second network device to determine a second frequency domain resource, the second frequency domain resource is used for the first terminal to send an uplink signal of a second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave and do not have an intersection;
the receiving module is configured to receive, on the first frequency domain resource, an uplink signal of a first standard sent by the first terminal.
6. The network device of claim 5,
the sending module is further configured to send configuration information of a third frequency domain resource to the second terminal; the third frequency domain resource is used for the second terminal to send an uplink signal of a first standard, and the third frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists;
the sending module is further configured to send configuration information of the first frequency domain resource and configuration information of the third frequency domain resource to the second network device; the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource are used by the second network device to determine the second frequency domain resource, and the second frequency domain resource and the third frequency domain resource belong to the same carrier, and no intersection exists;
the receiving module is further configured to receive, on the first frequency domain resource, an uplink signal of the first standard sent by the first terminal, and receive, on the third frequency domain resource, an uplink signal of the first standard sent by the second terminal.
7. A network device is characterized in that the network device is used for supporting a second standard, the network device is used as an ideal backhaul interface between the second network device and a first network device, and the first network device is used for supporting a first standard;
the network device includes: a transmitting module and a receiving module; wherein the content of the first and second substances,
the receiving module is configured to receive configuration information of a first frequency domain resource sent by the first network device; the first frequency domain resource is used for a first terminal to send an uplink signal of a first standard;
the sending module is configured to send configuration information of a second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource; the second frequency domain resource is used for the first terminal to send an uplink signal of a second standard, and the second frequency domain resource and the first frequency domain resource belong to the same carrier wave and do not have an intersection;
the receiving module is further configured to receive, on the second frequency domain resource, an uplink signal of a second standard sent by the first terminal.
8. The network device of claim 7,
the receiving module is further configured to receive configuration information of a third frequency domain resource sent by the first network device; the third frequency domain resource is used for a second terminal to send an uplink signal of a first standard, and the third frequency domain resource and the first frequency domain resource belong to the same carrier, and no intersection exists;
the sending module is further configured to send configuration information of a second frequency domain resource to the first terminal according to the configuration information of the first frequency domain resource and the configuration information of the third frequency domain resource; wherein the second frequency domain resource and the third frequency domain resource belong to the same carrier, and there is no intersection.
9. A network device, characterized in that the network device comprises: a processor, a transceiver, and a memory; wherein the memory is configured to store one or more programs, the one or more programs including computer-executable instructions, which when executed by the network device, cause the network device to perform the dual connectivity establishment method of claim 1 or 2.
10. A network device, characterized in that the network device comprises: a processor, a transceiver, and a memory; wherein the memory is configured to store one or more programs, the one or more programs including computer-executable instructions, which when executed by the network device, cause the network device to perform the dual connectivity establishment method of claim 3 or 4.
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