CN108811004B - Auxiliary base station switching method and device - Google Patents
Auxiliary base station switching method and device Download PDFInfo
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- CN108811004B CN108811004B CN201710296170.2A CN201710296170A CN108811004B CN 108811004 B CN108811004 B CN 108811004B CN 201710296170 A CN201710296170 A CN 201710296170A CN 108811004 B CN108811004 B CN 108811004B
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- 238000000926 separation method Methods 0.000 claims description 27
- 230000011664 signaling Effects 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 17
- 238000012790 confirmation Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 13
- 230000004044 response Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
- H04W36/00695—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using split of the control plane or user plane
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0027—Control or signalling for completing the hand-off for data sessions of end-to-end connection for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
- H04W36/085—Reselecting an access point involving beams of access points
Abstract
The invention discloses a method for switching a secondary base station, which comprises the following steps: the main base station confirms the switched target auxiliary base station; and the main base station sends user plane data to the user equipment in the process of switching the user equipment from the current auxiliary base station to the target auxiliary base station. The invention also discloses a switching device of the auxiliary base station. Through the mode, the method and the device can shorten the mobility interruption time.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for secondary base station handover.
Background
The dual connectivity can be used in a heterogeneous Network to implement interworking and cooperation between different types of Radio Access Networks (RANs), such as New Radio Access technologies (NR) and long Term Evolution (L ong Term Evolution, L TE).
In the prior art, control plane data required by a User Equipment (UE) operating in dual connectivity mode is managed by only one base station, which is called a primary base station, and another eNodeB for providing additional resources, which is called a secondary base station. For the user plane data, it may be managed only by the Secondary base station, and this bearer mode is called a Secondary Cell Group (SCG), i.e. a serving Cell Group controlled by the Secondary base station.
In the secondary base station switching process in the SCG bearer mode, since the UE needs to disconnect from the current secondary base station first and then perform random access to establish connection with the target secondary base station, between the two steps, the UE is not connected to any secondary base station and cannot receive user plane data, thereby causing mobility interruption.
Disclosure of Invention
The invention mainly solves the technical problem of providing a method and a device for switching a secondary base station, which can solve the problem of mobility interruption in the switching process of the secondary base station in an SCG (secondary cell group) bearing mode in the prior art.
In order to solve the above technical problem, a first aspect of the present invention provides a method for handover of a secondary base station, including: the main base station confirms the switched target auxiliary base station; and the main base station sends user plane data to the user equipment in the process of switching the user equipment from the current auxiliary base station to the target auxiliary base station.
In order to solve the above technical problem, a second aspect of the present invention provides a secondary base station handover method, including: the current auxiliary base station confirms the switched target auxiliary base station; and the current auxiliary base station sends at least part of the received user plane data borne by the auxiliary cell group to the main base station in the switching process, so that the main base station sends the user plane data to the user equipment in the switching process.
In order to solve the above technical problem, a third aspect of the present invention provides a secondary base station handover method, including: and the user equipment is switched to the target auxiliary base station from the current auxiliary base station and receives the user plane data from the main base station in the switching process.
In order to solve the above technical problem, a fourth aspect of the present invention provides a secondary base station switching apparatus, which includes a processor and a communication circuit, wherein the processor is connected with the communication circuit, and the processor is configured to execute instructions to implement any one of the methods provided in the first to third aspects of the present invention.
In order to solve the above technical problem, a fifth aspect of the present invention provides a secondary base station switching apparatus, which stores instructions that when executed implement any one of the methods provided by the first to third aspects of the present invention.
In order to solve the above technical problem, a sixth aspect of the present invention provides a secondary base station switching apparatus, including: the confirming module is used for confirming the switched target auxiliary base station; and the sending module is used for sending the user plane data to the user equipment in the process of switching the user equipment from the current auxiliary base station to the target auxiliary base station.
In order to solve the above technical problem, a seventh aspect of the present invention provides a secondary base station switching apparatus, including: the confirming module is used for confirming the switched target auxiliary base station; and the sending module is used for sending at least part of the received user plane data loaded by the secondary cell group to the main base station in the switching process so that the main base station sends the user plane data to the user equipment in the switching process.
In order to solve the above technical problem, an eighth aspect of the present invention provides a secondary base station switching apparatus, including: and the switching module is used for switching from the current auxiliary base station to the target auxiliary base station and receiving the user plane data from the main base station in the switching process.
The invention has the beneficial effects that: in the switching process of the auxiliary base station, the main base station sends user plane data to the user equipment, and the user equipment can still receive the user plane data from the main base station when not connected with any auxiliary base station because the main base station is connected with the user equipment, so that the time of mobility interruption can be shortened.
Further, if the main base station keeps sending user plane data to the user equipment during the switching process, the occurrence of mobility interruption can be avoided.
Drawings
Fig. 1 is a flowchart illustrating a method for handover of a secondary base station according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a secondary base station handover method according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating a secondary base station handover method according to a third embodiment of the present invention;
fig. 4 is a flowchart illustrating a secondary base station handover method according to a fourth embodiment of the present invention;
fig. 5 is a flowchart illustrating a fifth exemplary embodiment of a method for assisting a base station handover according to the present invention;
fig. 6 is a schematic diagram of a user plane data transmission path in the secondary base station handover process in the fifth embodiment of the secondary base station handover method of the present invention;
fig. 7 is a flowchart illustrating a sixth exemplary embodiment of a method for assisting a base station handover according to the present invention;
fig. 8 is a flowchart illustrating a method for assisting a base station handover according to a seventh embodiment of the present invention;
fig. 9 is a flowchart illustrating an eighth exemplary method for assisting bs handover according to the present invention;
fig. 10 is a flowchart illustrating a ninth exemplary embodiment of a method for assisting a base station handover according to the present invention;
fig. 11 is a flowchart illustrating a tenth exemplary method for assisting base station handover according to the present invention;
fig. 12 is a flowchart illustrating an eleventh exemplary embodiment of a method for handing over a secondary base station according to the present invention;
fig. 13 is a flowchart illustrating a secondary base station handover method according to a twelfth embodiment of the present invention;
fig. 14 is a flowchart illustrating a method for handing over a secondary base station according to a thirteenth embodiment of the present invention;
fig. 15 is a flowchart illustrating a method for secondary base station handover according to a fourteenth embodiment of the present invention;
fig. 16 is a schematic structural diagram of a first embodiment of a secondary base station switching apparatus according to the present invention;
fig. 17 is a schematic structural diagram of a secondary base station switching apparatus according to a second embodiment of the present invention;
fig. 18 is a schematic structural diagram of a secondary base station switching apparatus according to a third embodiment of the present invention;
fig. 19 is a schematic structural diagram of a fourth embodiment of the secondary base station switching apparatus of the present invention;
fig. 20 is a schematic structural diagram of a fifth embodiment of the secondary base station switching apparatus of the present invention;
fig. 21 is a schematic structural diagram of a sixth embodiment of the secondary base station switching apparatus of the present invention;
fig. 22 is a schematic structural diagram of a seventh embodiment of the secondary base station switching apparatus of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples. Non-conflicting ones of the following embodiments may be combined with each other.
The primary execution entity of the first embodiment of the secondary base station handover method of the present invention is a base station, and the base station serves as a primary base station in dual connectivity. The base station is connected with the core network and performs wireless communication with the user equipment to provide communication coverage for a corresponding geographic area. The base station may be a macro base station, a micro base station, a pico base station, or a home base station (femtocell). In some embodiments, a base station may also be referred to as a radio base station, access point, node B, evolved node B (eNodeB, eNB), gNB, or other suitable terminology. As shown in fig. 1, the present embodiment includes:
s11: the master base station confirms the target secondary base station for handover.
All Radio Resource Control (RRC) signaling messages and functions required by the UE are managed by the primary base station, such as common Radio Resource configuration, dedicated Radio Resource configuration, measurement, mobility management, etc. the types of the primary base station and the secondary base station may be the same or different, for example, L TE primary base station, NR secondary base station.
The switching of the secondary base station may be initiated by the primary base station, the current secondary base station, or the user equipment. Depending on the initiator of the handover of the secondary base station, the primary base station may determine the target secondary base station in various ways, which may be specifically described in the following embodiments,
if the switching of the secondary base station is initiated by the main base station or the current secondary base station, after the target secondary base station is confirmed, the main base station generally uses the RRC reconfiguration message to send a switching signaling to the UE, and the switching signaling can include the information of the target secondary base station. And the user equipment responds to the switching signaling to disconnect the connection with the current auxiliary base station, then executes random access to establish the connection with the target auxiliary base station, and realizes switching from the current auxiliary base station to the target auxiliary base station.
If the switching of the auxiliary base station is initiated by the user equipment, the main base station/the current auxiliary base station needs to select at least one candidate auxiliary base station for the user equipment in advance, and the main base station sends the information of the candidate auxiliary base station and the switching condition to the user equipment. And the user equipment judges whether the signal quality of the candidate auxiliary base stations meets the switching condition, if so, selects a target auxiliary base station from the candidate auxiliary base stations meeting the switching condition, and switches to the target auxiliary base station from the current auxiliary base station.
S12: and the main base station sends user plane data to the user equipment in the process of switching the user equipment from the current auxiliary base station to the target auxiliary base station.
During the handover, the user plane data transmitted by the primary base station to the user equipment may include user plane data received by the primary base station from the core network and/or the current secondary base station.
If the Master base station only receives the user plane data from the core network, the bearer mode of the user plane data is changed from a Secondary Cell Group (SCG), i.e. a serving Cell Group controlled by the Secondary base station, to a Master Cell Group (Master Cell Group, MCG, i.e. a serving Cell Group controlled by the Master base station) or a Master Cell Group separation (MCG split). In MCG mode, the primary base station receives user plane data from the core network and sends it to the UE. Under the MCG split mode, the main base station receives user plane data from a core network and forwards part of the received user plane data to the auxiliary base station, and both the main base station and the auxiliary base station send the user plane data to user equipment.
If the main base station only receives the user plane data from the current secondary base station, that is, the user plane data sent in the switching process of the base station only comes from the current secondary base station, the bearing mode of the user plane data is changed from SCG to secondary cell group separation (SCGPLit). In the SCG split mode, the auxiliary base station receives user plane data from the core network and forwards part of the received user plane data to the main base station, and the main base station and the auxiliary base station both send the user plane data to the user equipment.
The main base station can keep sending user plane data to the user equipment in the whole switching process so as to avoid mobility interruption; or may stop transmission after the received user plane data is transmitted, regardless of whether the handover is completed.
After the switching is completed, the main base station can continuously send user plane data to the user equipment, and at the moment, the bearing mode can not be modified; the primary base station may also stop sending user plane data to the user equipment, at which point the bearer mode may be switched back to SCG.
Through the implementation of the embodiment, in the switching process of the secondary base station, the main base station sends the user plane data to the user equipment, and as the main base station is connected with the user equipment, the user equipment can still receive the user plane data from the main base station when not connected with any secondary base station, so that the time of mobility interruption can be shortened.
As shown in fig. 2, the second embodiment of the method for handing over a secondary base station of the present invention is based on the first embodiment of the method for handing over a secondary base station of the present invention, and step S12 is preceded by:
s13: and the main base station respectively sends a first bearer mode reconfiguration instruction to the user equipment and the current auxiliary base station.
The first bearer mode reconfiguration instruction is to change the bearer mode from SCG to SCG split. The first bearer mode reconfiguration command sent to the current secondary base station includes a data separation proportion, and the data separation proportion is used for indicating the proportion of user plane data sent by the current secondary base station to the main base station to user plane data borne by the secondary cell group received by the current secondary base station.
If the handover is initiated by the primary base station/the current secondary base station, the primary base station may send the handover signaling while sending the first bearer mode reconfiguration instruction to the user equipment, or may send the handover signaling before or after sending the first bearer mode reconfiguration instruction to the user equipment.
S14: the main base station receives a bearer mode reconfiguration complete message from the user equipment.
And the user equipment sends a bearer mode reconfiguration complete message to the main base station after changing the bearer mode of the user plane data from the SCG to the SCG split according to the first bearer mode reconfiguration instruction, which indicates that the main base station can start sending the user plane data to the user equipment.
As shown in fig. 3, a third embodiment of the method for handing over a secondary base station according to the present invention is based on the first embodiment of the method for handing over a secondary base station according to the present invention, and after step S12, the method further includes:
s15: and the main base station sends a second bearer mode reconfiguration instruction to the user equipment after the switching process is finished.
The second bearer mode reconfiguration instruction is used for changing the bearer mode of the user plane data from SCG split to SCG. The basis for the main base station to determine that the handover process is completed may be to receive an end flag from the current secondary base station, or to receive a path handover confirmation message from a Mobility Management Entity (MME), or to complete random access with the target secondary base station by the ue. If the main base station still has unsent user plane data at this time, the user plane data can be forwarded to the target secondary base station.
In this embodiment, the master base station controls the UE to change the bearer mode of the user plane data from SCG split to SCG after the switching process is completed, so that the master base station can send the user plane data to the user equipment in the whole switching process, and mobility interruption is avoided.
As shown in fig. 4, a fourth embodiment of the secondary base station handover method according to the present invention is based on the first embodiment of the secondary base station handover method according to the present invention, and after step S12, the method further includes:
s16: and the main base station sends a second bearer mode reconfiguration instruction to the user equipment after sending the user plane data.
The second bearer mode reconfiguration instruction is used for changing the bearer mode of the user plane data from SCG split to SCG. The handover process is not necessarily completed by the master base station when the user plane data is transmitted. If the user equipment and the target secondary base station do not complete the random access process in the step, mobility interruption may occur, but the time for mobility interruption is shortened compared with the prior art.
As shown in fig. 5, a fifth embodiment of the method for handing over a secondary base station in the present invention is based on the first embodiment of the method for handing over a secondary base station in the present invention, and a main base station initiates a handover, where parts identical to those in the foregoing embodiments are not described again. The embodiment comprises the following steps:
s111: the primary base station sends a handover request to the target secondary base station.
S112: and the target secondary base station sends a switching request confirmation message to the main base station.
S113: and the main base station sends the information of the target auxiliary base station and the first bearing mode reconfiguration instruction to the current auxiliary base station.
In this embodiment, the primary base station simultaneously sends the information of the target secondary base station and the first bearer mode reconfiguration instruction. In other embodiments, the primary base station may send the information of the target secondary base station before sending the first bearer mode reconfiguration instruction, or vice versa. The first bearer mode reconfiguration command includes a data separation ratio.
S114: and the main base station sends a switching signaling and a first bearer mode reconfiguration instruction to the user equipment.
In this embodiment, the main base station simultaneously sends the handover signaling and the first bearer mode reconfiguration command. In other embodiments, the primary base station may send the handover signalling before sending the first bearer mode reconfiguration instruction, or vice versa.
S115: the current auxiliary base station divides the received user plane data into two parts, one part is sent to the main base station, and the other part is sent to the target auxiliary base station.
And the current auxiliary base station divides the user plane data borne by the received auxiliary cell group according to the data separation proportion.
S116: and the user equipment sends a connection reconfiguration finishing message and a bearer mode reconfiguration finishing message to the main base station.
And the user equipment is disconnected with the current auxiliary base station, and the step is executed after the user plane data bearer mode is changed from the SCG to the SCG split in response to the first bearer mode reconfiguration instruction.
In this embodiment, the ue sends the connection reconfiguration complete message and the bearer mode reconfiguration complete message at the same time, or may send both messages separately in other embodiments.
S117: and the main base station sends a secondary base station reconfiguration completion message to the target secondary base station.
S118: and the user equipment and the target secondary base station finish random access.
After the random access is completed, the user equipment may receive data from the target secondary base station. If the main base station is still transmitting user plane data to the user equipment at this time, the user equipment can simultaneously receive the user plane data from the target secondary base station and the main base station.
S119: the master base station sends a path switch request to the MME.
The MME is a network element of the core network and is responsible for signaling processing of the control plane.
S120: the MME sends a bearer change to a Serving GateWay (S-GW).
The S-GW is a network element of the core network and is responsible for forwarding data of the user plane.
S121: the S-GW sends an end flag to the current secondary base station.
The end flag may be sent independently or may be included in the last packet sent by the S-GW to the current secondary base station.
S122: and the current auxiliary base station respectively sends an end mark to the main base station and the target auxiliary base station.
The end-marker may be sent separately or may be included in the last packet.
S123: and the main base station sends a second bearer mode reconfiguration instruction to the user equipment.
S124: and the user equipment sends a bearer mode reconfiguration completion message to the main base station.
And the user equipment responds to the second bearer mode reconfiguration instruction to change the user plane data bearer mode from the SCG split to the SCG and then executes the step.
S125: and the S-GW establishes a new path with the target secondary base station.
S126: the MME sends a path switch acknowledgement message to the main base station.
S127: and the main base station sends a UE context release message to the current secondary base station.
The sequence relationships among some steps in fig. 5 are only illustrative and not limiting, for example, S113 and S114, S115 and S116, S123 and 125, and the like.
In fig. 5, the controlling of the UE to adjust the bearer mode to SCG by the primary base station (S123, S124) occurs after the primary base station receives the end flag, and in other embodiments, may also occur after the primary base station receives the path switch confirmation message (S126), or after the UE completes random access with the target secondary base station (S118), or after the primary base station finishes sending the user plane data received from the current secondary base station.
A, B, C, D in fig. 5 indicates four user plane data transmissions during the handover of the secondary base station, each transmission having a different path. The change of the user plane data transmission path during the handover of the secondary base station is shown in fig. 6, and the arrows in the figure indicate the transmission paths of the user plane data. The bearer mode in a is SCG, the current secondary base station receives user plane data from the S-GW, and the UE receives user plane data only from the current secondary base station, before the UE disconnects from the current secondary base station. The bearer mode in B is SCGsplit, the current secondary base station receives user plane data from the S-GW and forwards the user plane data to the primary base station and the target secondary base station, and the UE receives user plane data only from the primary base station, which occurs after the current secondary base station of the UE disconnects, adjusts the bearer mode to SCG split, and notifies the primary base station (step S116 in fig. 5). The bearer mode in C is SCG split, the current secondary base station receives user plane data from the S-GW and forwards to the primary base station and the target secondary base station, and the UE receives user plane data from the primary base station and the target secondary base station, which occurs after the random access is completed (step S118 in fig. 5). The bearer mode in D is SCG, the target secondary base station receives user plane data from the S-GW, the UE receives user plane data only from the target secondary base station, and this occurs after the UE changes the user plane data bearer mode from SCG split to SCG and notifies the primary base station (step S124 in fig. 5) in response to the second bearer mode reconfiguration command, and a new path is established between the S-GW and the target secondary base station (step S125 in fig. 5).
If the UE first adjusts the bearer mode from SCG to SCG split and then disconnects from the current secondary base station, the UE will receive user plane data from both the current secondary base station and the primary base station (not shown).
In this embodiment, the S-GW and the MME connected to the main base station, the current auxiliary base station, and the target auxiliary base station are the same, so that the S-GW or the MME does not need to be switched in the switching of the auxiliary base station.
As shown in fig. 7, a sixth embodiment of the method for handing over a secondary base station in the present invention is based on the first embodiment of the method for handing over a secondary base station in the present invention, where a current secondary base station initiates handover and a main base station negotiates with a target secondary base station, and details of the same parts as those in the foregoing embodiments are not repeated. The embodiment comprises the following steps:
s131: the current secondary base station sends a first handover request to the primary base station.
The first handover request may include information of the target secondary base station specified by the current secondary base station, or may not include information of the target secondary base station, and the primary base station selects the target secondary base station.
S132: the primary base station transmits a second handover request to the target secondary base station in response to the first handover request.
S133: and the target secondary base station sends a second switching request confirmation message to the main base station.
S134: and the main base station sends a first switching request confirmation message and a first bearing mode reconfiguration instruction to the current auxiliary base station.
In this embodiment, the main base station simultaneously sends the first handover request acknowledgement message and the first bearer mode reconfiguration command. In other embodiments, the primary base station may send the first handover request acknowledge message before sending the first bearer mode reconfiguration instruction, or vice versa.
S135: and the main base station sends a switching signaling and a first bearer mode reconfiguration instruction to the user equipment.
S136: the current auxiliary base station divides the received user plane data carried by the auxiliary cell group into two parts, one part is sent to the main base station, and the other part is sent to the target auxiliary base station.
S137: and the user equipment sends a connection reconfiguration finishing message and a bearer mode reconfiguration finishing message to the main base station.
S138: and the main base station sends a secondary base station reconfiguration completion message to the target secondary base station.
S139: and the user equipment and the target secondary base station finish random access.
S140: the master base station sends a path switch request to the MME.
S141: the MME sends a bearer change to the S-GW.
S142: the S-GW sends an end flag to the current secondary base station.
S143: and the current auxiliary base station respectively sends an end mark to the main base station and the target auxiliary base station.
S144: and the main base station sends a second bearer mode reconfiguration instruction to the user equipment.
S145: and the user equipment sends a bearer mode reconfiguration completion message to the main base station.
S146: and the S-GW establishes a new path with the target secondary base station.
S147: the MME sends a path switch acknowledgement message to the main base station.
S148: and the main base station sends a UE context release message to the current secondary base station.
In fig. 7, the controlling of the UE to adjust the bearer mode to SCG by the primary base station (S144, S145) occurs after the primary base station receives the end flag, and in other embodiments, may also occur after the primary base station receives the path switch confirmation message (S147), or after the UE completes random access with the target secondary base station (S139), or after the primary base station finishes sending the user plane data received from the current secondary base station.
In this embodiment, the change of the user plane data transmission path during the secondary base station handover is still as shown in fig. 6.
As shown in fig. 8, a seventh embodiment of the method for handing over a secondary base station of the present invention is based on the first embodiment of the method for handing over a secondary base station of the present invention, wherein a handover is directly initiated by a current secondary base station, and details of the same parts as those in the foregoing embodiments are omitted. The embodiment comprises the following steps:
s151: and the current auxiliary base station sends a third switching request to the target auxiliary base station.
S152: and the target auxiliary base station sends a third switching request confirmation message to the current base station.
S153: the current secondary base station sends a fourth handover request to the primary base station.
S154: and the main base station sends a first bearer mode reconfiguration instruction to the current secondary base station.
S155: and the main base station sends a switching signaling and a first bearer mode reconfiguration instruction to the user equipment.
S156: the current auxiliary base station divides the received user plane data carried by the auxiliary cell group into two parts, one part is sent to the main base station, and the other part is sent to the target auxiliary base station.
S157: and the user equipment sends a connection reconfiguration finishing message and a bearer mode reconfiguration finishing message to the main base station.
S158: and the main base station sends a secondary base station reconfiguration completion message to the target secondary base station.
S159: and the user equipment and the target secondary base station finish random access.
S160: the master base station sends a path switch request to the MME.
S161: the MME sends a bearer change to the S-GW.
S162: the S-GW sends an end flag to the current secondary base station.
S163: and the current auxiliary base station respectively sends an end mark to the main base station and the target auxiliary base station.
S164: and the S-GW establishes a new path with the target secondary base station.
S165: the MME sends a path switch acknowledgement message to the main base station.
S166: and the main base station sends a second bearer mode reconfiguration instruction to the user equipment.
S167: and the user equipment sends a bearer mode reconfiguration completion message to the main base station.
S168: and the main base station sends a UE context release message to the current secondary base station.
In fig. 8, the main base station controlling the UE to adjust the bearer mode to SCG (S166, S167) occurs after the main base station receives the path switch confirmation message, and in other embodiments, may also occur after the main base station receives the end flag (S163), or after the user equipment completes random access with the target secondary base station (S159), or after the main base station finishes sending the user plane data received from the current secondary base station.
In this embodiment, the change of the user plane data transmission path during the secondary base station handover is still as shown in fig. 6.
As shown in fig. 9, an eighth embodiment of a method for handing over a secondary base station in the present invention is based on the first embodiment of the method for handing over a secondary base station in the present invention, and a user equipment initiates a handover, where details of the same parts as those in the foregoing embodiments are omitted. The embodiment comprises the following steps:
s171: the main base station sends a pre-switching instruction to the user equipment.
The pre-switching command comprises switching conditions and information of candidate auxiliary base stations. And the main base station selects candidate auxiliary base stations at least according to the measurement report reported by the user equipment. Besides, the main base station can select the candidate secondary base station according to at least one of the current position, the moving direction and the load condition of the candidate secondary base station of the user equipment.
S172: the user equipment judges whether the signal quality of the candidate auxiliary base station meets the switching condition.
And the user equipment monitors the signal quality of the candidate auxiliary base stations, and if the signal quality meets the switching condition, selects a target auxiliary base station from the candidate auxiliary base stations meeting the switching condition and executes the subsequent steps.
If the number of candidate auxiliary base stations meeting the switching condition is equal to one, the user equipment directly selects the auxiliary base station as a target auxiliary base station; if the number of candidate secondary base stations satisfying the handover condition is greater than one, one of them may be selected as the target secondary base station according to predetermined criteria, such as best signal quality, best service quality, minimum load, etc.
S173: the user equipment transmits a handover notification message to the master base station.
The handover notification message includes information of the target secondary base station. Because the control plane data of the user equipment is transmitted by the main base station, the user equipment cannot directly inform the current auxiliary base station when initiating the switching by itself, but needs to inform the main base station, and then the main base station informs the current auxiliary base station. Of course, in other embodiments, the target secondary base station may also send the handover notification message to the primary base station and/or the current secondary base station.
S174: and the user equipment is switched from the current secondary base station to the target secondary base station.
S175: the master base station sends a handover notification message to the current secondary base station.
S176: and the main base station sends user plane data to the user equipment in the switching process.
Reference may be made in particular to the description of the preceding embodiments.
The execution sequence between S173 and S174, and between S175 and S176 is only illustrated, and may be actually exchanged or executed simultaneously.
As shown in fig. 10, the execution subject of the ninth embodiment of the secondary base station handover method of the present invention is the base station, and the base station is the current secondary base station in the handover process. The embodiment comprises the following steps:
s21: and the current secondary base station confirms the switched target secondary base station.
Depending on the initiator of the secondary base station handover, the current secondary base station may determine the target secondary base station in various ways, and specifically, reference may be made to the descriptions in the fifth to eighth embodiments of the secondary base station handover method of the present invention, and the description is not repeated here.
S22: and the current secondary base station sends at least part of the received user plane data carried by the secondary cell group to the main base station in the switching process.
So that the master base station can transmit the user plane data from the current secondary base station to the user equipment. And if the user plane data which is not sent to the main base station exists, the current auxiliary base station forwards the user plane data to the target auxiliary base station.
As shown in fig. 11, a tenth embodiment of the method for handing over a secondary base station according to the present invention is based on the ninth embodiment of the method for handing over a secondary base station according to the present invention, where S22 further includes:
s23: receiving a first bearer mode reconfiguration instruction from the master base station.
And the first bearer mode reconfiguration instruction is used for changing the bearer mode from SCG to SCG split, wherein the first bearer mode reconfiguration instruction comprises a data separation proportion, and the data separation proportion is used for indicating the proportion of the user plane data sent by the current secondary base station to the main base station to the user plane data borne by the secondary cell group received by the current secondary base station. The current auxiliary base station can divide the received user plane data according to the data separation proportion and then respectively send the user plane data to the main base station and the target auxiliary base station.
The executing main body of the eleventh embodiment of the method for assisting base station switching of the present invention is the user equipment, and the user equipment may be fixed or mobile, and may be a cellular phone, a Personal Digital Assistant (PDA), a wireless modem, a tablet computer, a notebook computer, a cordless phone, etc. As shown in fig. 12, the present embodiment includes:
s31: and the user equipment is switched to the target auxiliary base station from the current auxiliary base station and receives the user plane data from the main base station in the switching process.
The user equipment may perform handover in response to the handover signaling from the main base station, or may monitor whether the signal quality of the candidate secondary base station satisfies the handover condition after receiving the pre-handover command (including the handover condition and the information of the candidate secondary base station) from the base station. And if so, selecting a target secondary base station from the candidate secondary base stations meeting the switching condition. Reference may be made in particular to the description of the preceding embodiments.
The user equipment disconnects with the current auxiliary base station, executes random access to establish connection with the target auxiliary base station, realizes switching from the current auxiliary base station to the target auxiliary base station, and receives user plane data from the main base station in the process.
As shown in fig. 13, a twelfth embodiment of the method for handing over a secondary base station according to the present invention is based on the eleventh embodiment of the method for handing over a secondary base station, and further includes, before receiving user plane data from a primary base station during a handover procedure:
s32: the user equipment receives a first bearer mode reconfiguration instruction from the main base station.
The first bearer mode reconfiguration instruction is to change the bearer mode from SCG to SCG split. The order of sending the first bearer mode reconfiguration command and the handover signaling is not limited.
S33: and the user equipment modifies the bearer mode according to the first bearer mode reconfiguration instruction.
The user equipment changes the bearer mode of the user plane data from SCG to SCG split.
S34: and the user equipment sends a bearer mode reconfiguration completion message to the main base station.
As shown in fig. 14, a method for handing over a secondary base station according to a thirteenth embodiment of the present invention is based on the eleventh embodiment of the method for handing over a secondary base station, and further includes, after S31:
s35: and the user equipment receives a second bearer mode reconfiguration instruction sent by the main base station after the switching process is finished.
The second bearer mode reconfiguration instruction is used for changing the bearer mode of the user plane data from SCG split to SCG.
S36: and the user equipment modifies the bearer mode according to the second bearer mode reconfiguration instruction and then sends a bearer mode reconfiguration completion message to the main base station.
After the switching process is completed, the load-bearing mode of the user plane data is changed from SCG split to SCG, so that the main base station can send the user plane data to the user equipment in the whole switching process, and mobility interruption is avoided.
As shown in fig. 15, a fourteenth embodiment of the method for handing over a secondary base station of the present invention is based on the eleventh embodiment of the method for handing over a secondary base station of the present invention, and further includes, after S31:
s37: and the user equipment receives a second bearer mode reconfiguration instruction sent by the main base station after the user plane data is sent.
The second bearer mode reconfiguration instruction is used for changing the bearer mode of the user plane data from SCG split to SCG.
S38: and the user equipment modifies the bearer mode according to the second bearer mode reconfiguration instruction and then sends a bearer mode reconfiguration completion message to the main base station.
As shown in fig. 16, the first embodiment of the secondary base station switching apparatus of the present invention includes: processor 110 and communication circuit 120, communication circuit 120 is connected to processor 110.
The communication circuit 120 is used for transmitting and receiving data, and is an interface for the secondary base station switching apparatus to communicate with other communication devices.
The processor 110 controls the operation of the secondary base station switching device, and the processor 110 may also be referred to as a Central Processing Unit (CPU). The processor 110 may be an integrated circuit chip having signal processing capabilities. The processor 110 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The processor 110 is configured to execute instructions to implement the methods provided by any one of the first to tenth embodiments of the secondary base station handover methods of the present invention and any non-conflicting combinations.
The secondary base station switching device in this embodiment may be a base station, or may be a separate component that can be integrated in the base station, such as a baseband board.
As shown in fig. 17, the secondary base station switching apparatus according to the second embodiment of the present invention includes: processor 210 and communication circuit 220, communication circuit 220 is connected to processor 210.
The communication circuit 220 is used for transmitting and receiving data, and is an interface for the secondary base station switching apparatus to communicate with other communication devices.
The processor 210 is configured to execute instructions to implement the methods provided by any one of the eleventh to fourteenth embodiments of the secondary base station handover method of the present invention and any non-conflicting combinations.
The secondary base station switching device in this embodiment may be a user equipment, or may be a separate component that may be integrated in the user equipment, for example, a baseband chip.
As shown in fig. 18, the third embodiment of the apparatus for switching a secondary base station of the present invention includes a memory 310, and the memory 310 stores instructions that when executed implement the method provided by any one of the first to tenth embodiments of the method for switching a secondary base station of the present invention and any non-conflicting combination.
The Memory 310 may include a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a hard disk, an optical disk, and the like.
The secondary base station switching device in this embodiment may be a base station, or may be a separate component that can be integrated in the base station, such as a baseband board.
As shown in fig. 19, the fourth embodiment of the secondary base station switching apparatus of the present invention includes a memory 410, and the memory 310 stores instructions that, when executed, implement the method provided by any one of the eleventh to fourteenth embodiments of the secondary base station switching method of the present invention and any non-conflicting combinations.
The Memory 410 may include a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a hard disk, an optical disk, and the like.
The secondary base station switching device in this embodiment may be a user equipment, or may be a separate component that may be integrated in the user equipment, for example, a baseband chip.
As shown in fig. 20, a fifth embodiment of the apparatus for switching a secondary base station of the present invention includes:
and an acknowledgement module 51, configured to acknowledge the target secondary base station for handover.
A sending module 52, configured to send user plane data to the user equipment in a process of switching the user equipment from the current secondary base station to the target secondary base station.
The secondary base station switching device in this embodiment may be a base station, or may be a separate component that can be integrated in the base station, such as a baseband board.
As shown in fig. 21, the sixth embodiment of the secondary base station switching apparatus of the present invention includes:
a confirmation module 61, configured to confirm the target secondary base station for handover;
a sending module 62, configured to send at least part of the received user plane data carried by the secondary cell group to the master base station during the handover procedure, so that the master base station sends the user plane data to the user equipment during the handover procedure.
The secondary base station switching device in this embodiment may be a base station, or may be a separate component that can be integrated in the base station, such as a baseband board.
As shown in fig. 22, the seventh embodiment of the secondary base station switching apparatus of the present invention includes:
and a switching module 72, configured to switch from the current secondary base station to the target secondary base station, and receive user plane data from the primary base station in the switching process.
The secondary base station switching device in this embodiment may be a user equipment, or may be a separate component that may be integrated in the user equipment, for example, a baseband chip.
The functions and possible extensions of each part in each embodiment of the apparatus for switching a secondary base station of the present invention may specifically refer to the description in the corresponding embodiment of the method for switching a secondary base station of the present invention, and are not repeated here.
In the embodiments provided in the present invention, it should be understood that the disclosed method and apparatus can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (38)
1. A method for handover of a secondary base station, comprising:
the main base station confirms the switched target auxiliary base station;
the master base station respectively sends a first bearer mode reconfiguration instruction to user equipment and a current auxiliary base station, wherein the first bearer mode reconfiguration instruction is used for changing a bearer mode into a preset bearer mode, and the preset bearer mode is at least one of auxiliary cell group separation, master cell group separation and master cell group separation;
and the main base station sends user plane data to the user equipment in the process that the user equipment is switched from the current auxiliary base station to the target auxiliary base station.
2. The method of claim 1,
if the preset bearer mode is the secondary cell group separation, the sending, by the master base station, user plane data to the user equipment in the process that the user equipment is switched from the current secondary base station to the target secondary base station includes:
and the master base station receives the user plane data from the current auxiliary base station in the switching process and then sends the user plane data to the user equipment.
3. The method of claim 2,
and the user plane data sent by the main base station in the switching process only comes from the current auxiliary base station.
4. The method of claim 1,
the first bearer mode reconfiguration command sent by the master base station to the current secondary base station includes a data separation proportion, and the data separation proportion is used for indicating the proportion of the user plane data sent by the current secondary base station to the master base station to the user plane data borne by the secondary cell group received by the current secondary base station.
5. The method of claim 1,
after the master base station sends the first bearer mode reconfiguration instruction to the user equipment, the method further includes:
the master base station receives a bearer mode reconfiguration complete message from the user equipment.
6. The method of claim 1,
the main base station further includes, after transmitting user plane data to the user equipment in a process in which the user equipment is switched from the current secondary base station to the target secondary base station:
and the main base station sends a second bearer mode reconfiguration instruction to the user equipment after the switching process is finished, wherein the second bearer mode reconfiguration instruction is used for changing the bearer mode from the preset bearer mode to the auxiliary cell group.
7. The method of claim 6,
the sending, by the master base station, the second bearer mode reconfiguration instruction to the user equipment after the handover process is completed includes:
and the main base station sends the second bearer mode reconfiguration instruction to the user equipment after receiving the end mark from the current auxiliary base station.
8. The method of claim 6,
the sending, by the master base station, the second bearer mode reconfiguration instruction to the user equipment after the handover process is completed includes:
and the main base station sends the second bearer mode reconfiguration instruction to the user equipment after receiving a path switching confirmation message from a mobility management entity.
9. The method of claim 1,
the main base station further includes, after transmitting user plane data to the user equipment in a process in which the user equipment is switched from the current secondary base station to the target secondary base station:
and the main base station sends a second bearer mode reconfiguration instruction to the user equipment after the user plane data is sent, wherein the second bearer mode reconfiguration instruction is used for changing the bearer mode from the preset bearer mode to the secondary cell group.
10. The method according to any one of claims 1 to 9,
the main base station further comprises after confirming the target secondary base station of the handover:
and the main base station sends a switching signaling to the user equipment so that the user equipment is switched from the current auxiliary base station to the target auxiliary base station.
11. The method of claim 10,
the target secondary base station for the main base station to confirm the switching comprises the following steps:
the main base station sends a switching request to the target auxiliary base station;
the main base station receives a switching request confirmation message from the target auxiliary base station;
and the main base station sends the information of the target auxiliary base station to the current auxiliary base station.
12. The method of claim 11,
and the main base station sends a first bearer mode reconfiguration instruction at the same time of sending the information of the target auxiliary base station, or the main base station sends a first bearer mode reconfiguration instruction before or after sending the information of the target auxiliary base station.
13. The method of claim 10,
the target secondary base station for the main base station to confirm the switching comprises the following steps:
the main base station receives a first switching request from a current auxiliary base station;
the main base station responds to the first switching request and sends a second switching request to the target auxiliary base station;
the main base station receives a second switching request confirmation message from the target auxiliary base station;
the master base station sends a first handover request acknowledgement message to the current secondary base station.
14. The method of claim 13,
the main base station sends a first bearer mode reconfiguration instruction at the same time of sending the first switching request confirmation message, or the main base station sends the first bearer mode reconfiguration instruction before or after sending the first switching request confirmation message.
15. The method of claim 10,
the target secondary base station for the main base station to confirm the switching comprises the following steps:
and the main base station receives a fourth switching request from the current auxiliary base station, wherein the fourth switching request is sent after the current auxiliary base station sends a third switching request to the target auxiliary base station and receives a determined response.
16. The method of claim 15,
after the master base station receives the fourth handover request from the current secondary base station, the method further includes:
and the main base station sends a first bearer mode reconfiguration instruction to the current secondary base station.
17. The method according to any one of claims 1 to 9,
the master base station confirming the target secondary base station for handover further comprises:
the main base station sends a pre-switching instruction to the user equipment, wherein the pre-switching instruction comprises switching conditions and information of candidate auxiliary base stations, so that the user equipment selects a target auxiliary base station from the candidate auxiliary base stations and switches from the current auxiliary base station to the target auxiliary base station when the switching conditions are met;
the target secondary base station for the main base station to confirm the switching comprises the following steps:
and the main base station receives a switching notification message from the user equipment and/or the target auxiliary base station.
18. A method for handover of a secondary base station, comprising:
the current auxiliary base station confirms the switched target auxiliary base station;
the current secondary base station receives a first bearer mode reconfiguration instruction from the main base station, wherein the first bearer mode reconfiguration instruction is used for changing a bearer mode from a secondary cell group to a secondary cell group separation;
and the current auxiliary base station sends at least part of the received user plane data carried by the auxiliary cell group to the main base station in the switching process, so that the main base station sends the user plane data to user equipment in the switching process.
19. The method of claim 18,
the first bearer mode reconfiguration command comprises a data separation proportion, and the data separation proportion is used for indicating the proportion of the user plane data sent by the current auxiliary base station to the main base station to the user plane data borne by the auxiliary cell group received by the current auxiliary base station.
20. The method of claim 18,
the current secondary base station further comprises, after sending at least part of the received user plane data carried by the secondary cell group to the primary base station in the handover process:
the current secondary base station receives an end mark from a service gateway;
the current secondary base station forwards the end mark to the main base station.
21. The method of any one of claims 18-20,
the target secondary base station for confirming the switching of the current secondary base station comprises the following steps:
the current secondary base station receives information of the target secondary base station from the master base station.
22. The method of any one of claims 18-20,
the target secondary base station for confirming the switching of the current secondary base station comprises the following steps:
the current auxiliary base station sends a first switching request to the main base station, so that the main base station responds to the first switching request to send a second switching request to the target auxiliary base station and receives a second switching request confirmation message from the target auxiliary base station;
the current secondary base station receives a first handover request acknowledge message from the primary base station.
23. The method of any one of claims 18-20,
the target secondary base station for confirming the switching of the current secondary base station comprises the following steps:
the current auxiliary base station sends a third switching request to the target auxiliary base station;
and the current auxiliary base station receives a third switching request confirmation message from the target auxiliary base station.
24. The method of claim 23,
after the current secondary base station receives the third handover request acknowledge message from the target secondary base station, the method further includes:
and the current auxiliary base station sends a fourth switching request to the main base station, wherein the fourth switching request comprises the information of the target auxiliary base station.
25. The method of any one of claims 18-20,
the target secondary base station for confirming the switching of the current secondary base station comprises the following steps:
the current secondary base station receives a handover notification message from the primary base station and/or the target secondary base station.
26. A method for handover of a secondary base station, comprising:
the method comprises the steps that user equipment receives a first bearer mode reconfiguration instruction from a main base station, wherein the first bearer mode reconfiguration instruction is used for changing a bearer mode into a preset bearer mode, and the preset bearer mode is at least one of auxiliary cell group separation, a main cell group separation and main cell group separation; and the user equipment is switched to a target auxiliary base station from the current auxiliary base station and receives user plane data from the main base station in the switching process.
27. The method of claim 26,
the user equipment further comprises, after receiving the first bearer mode reconfiguration instruction from the master base station:
and the user equipment modifies the bearer mode according to the first bearer mode reconfiguration instruction and then sends a bearer mode reconfiguration completion message to the main base station.
28. The method of any one of claims 26-27,
the user equipment further comprises, after receiving the first bearer mode reconfiguration instruction from the master base station:
and the user equipment receives a second bearer mode reconfiguration instruction sent by the main base station after the switching process is completed, wherein the second bearer mode reconfiguration instruction is used for changing the bearer mode from the preset bearer mode to the auxiliary cell group.
29. The method of claim 28,
the receiving, by the ue, the second bearer mode reconfiguration instruction sent by the master base station after the handover process is completed further includes:
and the user equipment modifies the bearer mode according to the second bearer mode reconfiguration instruction and then sends a bearer mode reconfiguration completion message to the main base station.
30. The method of any one of claims 26-27,
the user equipment further comprises, after receiving the first bearer mode reconfiguration instruction from the master base station:
and the user equipment receives a second bearer mode reconfiguration instruction sent by the main base station after the user plane data is sent, wherein the second bearer mode reconfiguration instruction is used for changing the bearer mode from the preset bearer mode to a secondary cell group.
31. The method of claim 30,
the ue further receives a second bearer mode reconfiguration command sent by the master base station after sending the user plane data, where the second bearer mode reconfiguration command is sent by the master base station after sending the user plane data:
and the user equipment modifies the bearer mode according to the second bearer mode reconfiguration instruction and then sends a bearer mode reconfiguration completion message to the main base station.
32. The method of any one of claims 26-27,
the switching of the user equipment from the current secondary base station to the target secondary base station comprises:
the user equipment receives a switching signaling from the main base station, wherein the switching signaling comprises the information of the target auxiliary base station;
and the user equipment responds to the switching signaling and switches from the current auxiliary base station to the target auxiliary base station.
33. The method of any one of claims 26-27,
the switching of the user equipment from the current secondary base station to the target secondary base station comprises:
the user equipment receives a pre-switching instruction from the base station, wherein the pre-switching instruction comprises switching conditions and information of candidate auxiliary base stations;
the user equipment judges whether the signal quality of the candidate auxiliary base station meets the switching condition;
and if so, the user equipment selects a target auxiliary base station from the candidate auxiliary base stations meeting the switching condition and switches to the target auxiliary base station from the current auxiliary base station.
34. The secondary base station switching device is characterized by comprising a processor and a communication circuit, wherein the processor is connected with the communication circuit;
the processor is configured to execute instructions to implement the method of any one of claims 1-33.
35. A secondary base station switch having stored thereon instructions that, when executed, implement the method of any of claims 1-33.
36. A secondary base station switching apparatus, comprising:
the confirming module is used for confirming the switched target auxiliary base station;
a sending module, configured to send a first bearer mode reconfiguration instruction to the user equipment and the current secondary base station, where the first bearer mode reconfiguration instruction is used to change a bearer mode into a preset bearer mode, and the preset bearer mode is at least one of secondary cell group separation, primary cell group separation, and primary cell group separation;
the sending module is further configured to send user plane data to the user equipment in a process of switching the user equipment from the current secondary base station to the target secondary base station.
37. A secondary base station switching apparatus, comprising:
the confirming module is used for confirming the switched target auxiliary base station;
a sending module, configured to receive a first bearer mode reconfiguration instruction from a master base station, where the first bearer mode reconfiguration instruction is used to change a bearer mode from a secondary cell group to a secondary cell group separation;
the sending module is further configured to send at least part of the received user plane data carried by the secondary cell group to the master base station in a handover process, so that the master base station sends the user plane data to a user equipment in the handover process.
38. A secondary base station switching apparatus, comprising:
a receiving module, configured to receive a first bearer mode reconfiguration instruction from a master base station, where the first bearer mode reconfiguration instruction is used to change a bearer mode into a preset bearer mode, and the preset bearer mode is at least one of secondary cell group separation, a master cell group, and master cell group separation;
and the switching module is used for switching from the current auxiliary base station to the target auxiliary base station and receiving the user plane data from the main base station in the switching process.
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| CN201710296170.2A CN108811004B (en) | 2017-04-28 | 2017-04-28 | Auxiliary base station switching method and device |
| PCT/CN2017/086122 WO2018196083A1 (en) | 2017-04-28 | 2017-05-26 | Method and apparatus for secondary base station change |
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| CN201710296170.2A CN108811004B (en) | 2017-04-28 | 2017-04-28 | Auxiliary base station switching method and device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131250A (en) * | 2010-01-13 | 2011-07-20 | 中兴通讯股份有限公司 | Data forwarding method and system based on wireless transmission system |
| CN104469869A (en) * | 2013-09-23 | 2015-03-25 | 中兴通讯股份有限公司 | Small cell switching method and base stations |
| WO2017026366A1 (en) * | 2015-08-11 | 2017-02-16 | 日本電気株式会社 | Device and method relating to dual connectivity |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6151801B2 (en) * | 2013-12-24 | 2017-06-21 | 京セラ株式会社 | Master base station |
| CN104812008B (en) * | 2014-01-28 | 2020-02-04 | 北京三星通信技术研究有限公司 | Method and device for supporting UE (user equipment) to move in small cell system |
| US9936427B2 (en) * | 2014-03-14 | 2018-04-03 | Intel Corporation | Systems and methods for joint handover of user equipment and secondary cell group in 3GPP LTE dual connectivity |
| CN104955064B (en) * | 2014-03-28 | 2019-01-11 | 上海诺基亚贝尔股份有限公司 | A kind of method and apparatus handling user equipment end RLC/PDCP entity in doubly-linked welding system |
| CN105992295A (en) * | 2015-03-03 | 2016-10-05 | 中兴通讯股份有限公司 | Methods for transmitting data during base station handover, user equipment and base stations |
-
2017
- 2017-04-28 CN CN201710296170.2A patent/CN108811004B/en active Active
- 2017-05-26 WO PCT/CN2017/086122 patent/WO2018196083A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131250A (en) * | 2010-01-13 | 2011-07-20 | 中兴通讯股份有限公司 | Data forwarding method and system based on wireless transmission system |
| CN104469869A (en) * | 2013-09-23 | 2015-03-25 | 中兴通讯股份有限公司 | Small cell switching method and base stations |
| WO2017026366A1 (en) * | 2015-08-11 | 2017-02-16 | 日本電気株式会社 | Device and method relating to dual connectivity |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018196083A1 (en) | 2018-11-01 |
| CN108811004A (en) | 2018-11-13 |
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