WO2016045038A1 - Procédé d'agrégation de porteuses, équipement associé, et système - Google Patents

Procédé d'agrégation de porteuses, équipement associé, et système Download PDF

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Publication number
WO2016045038A1
WO2016045038A1 PCT/CN2014/087408 CN2014087408W WO2016045038A1 WO 2016045038 A1 WO2016045038 A1 WO 2016045038A1 CN 2014087408 W CN2014087408 W CN 2014087408W WO 2016045038 A1 WO2016045038 A1 WO 2016045038A1
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WO
WIPO (PCT)
Prior art keywords
bearer
base station
cell group
network device
core network
Prior art date
Application number
PCT/CN2014/087408
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English (en)
Chinese (zh)
Inventor
戴明增
郭轶
曾清海
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/087408 priority Critical patent/WO2016045038A1/fr
Priority to CN201480033899.5A priority patent/CN105637934A/zh
Publication of WO2016045038A1 publication Critical patent/WO2016045038A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a carrier aggregation method, related device, and system.
  • LTE Release-12 LTE Release-12
  • An important feature of the Release-12 version is to support carrier aggregation (CA) between base stations.
  • UE User equipment
  • CA carrier aggregation
  • UE User equipment
  • DC Dual Connectivity for LTE
  • SCE Small Cell Enhancement
  • one of the multiple serving base stations is a primary base station (MeNB, Master eNB), and the other is a secondary base station (SeNB, Secondary eNB). Both the primary base station and the secondary base station perform data transmission with the UE.
  • the main difference between the two is that the primary base station bears more control functions.
  • RRC message control signaling
  • the bearer type can be divided into three types: one is: MCG (Master Cell Group) bearer, and the data of the bearer is directly transmitted between the UE and the serving gateway SGW through the MeNB; the second type is: SCG (Secondary Cell) Group, the secondary cell group), the data of the bearer is transmitted between the UE and the SGW through the SeNB; the third type is: Split Bearers, the offload bearer, the data of the bearer is simultaneously transmitted between the MeNB and the SeNB and the UE, and is transmitted through the MeNB and Pass between SGWs.
  • MCG Master Cell Group
  • SCG Secondary Cell
  • SeNB SeNB
  • Split Bearers the offload bearer
  • the data of the bearer is simultaneously transmitted between the MeNB and the SeNB and the UE, and is transmitted through the MeNB and Pass between SGWs.
  • the downlink data first arrives at the MeNB through the S1-U, and the MeNB determines the offloaded part of the data and transmits the data to the SeNB through the X2-U, and the SeNB sends the partial data to the UE.
  • the data on the S2-U of the SGW and the eNB, and the X2-U interface of the MeNB and the SeNB are transmitted through the GTP (General Packet Radio System Tunneling Protocol).
  • GTP General Packet Radio System Tunneling Protocol
  • Each The uplink or downlink data of the bearer has a separate GTP tunnel, which is distinguished by the TEID (Tunnel Endpoint IDentifier r).
  • both the MeNB and the SeNB have an S1-U connection with the SGW, that is, an MCG bearer and an SCG bearer.
  • the SGW does not identify the bearer type (MCG or SCG bearer), that is, the inter-base station carrier aggregation technology is transparent to the SGW.
  • MCG MCG or SCG bearer
  • the SeNB or the MeNB detects a GTP error of an SCG bearer, it sends a GTP Error Indication to the SGW.
  • the SGW deletes all the TEIDs of the UE including the MCG bearer.
  • the MME triggers the UE uplink text release process, and attempts to reestablish the UE, that is, sends a paging message to the UE.
  • Downlink Data Notification Downlink Data Notification
  • the main problem caused by the prior art is that when any GTP error occurs in any one of the MCG bearer and the SCG bearer, all bearers and the connection of the UE will be released, which will seriously affect the user experience.
  • the invention provides a carrier aggregation method, related device and system.
  • a first aspect of the embodiments of the present invention provides a carrier aggregation method, including:
  • the first base station receives the indication information sent by the second base station, where the indication information is used to indicate that at least one bearer on the second base station is released due to a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway. ;
  • the first base station sends a radio resource connection reconfiguration message to the terminal, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal.
  • the indication information is further configured to request that at least one bearer that has been released on the second base station is switched due to the GTP error bearer between the second base station and the serving gateway.
  • the indication information includes a bearer cause value, and the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer on the first base station used by the terminal to send data.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer on a third base station used by the terminal to send data, and the bearer on the third base station And the signal strength meets the preset requirements.
  • the correspondence relationship table includes at least one bearer and bearer identifier that is released due to the GTP error between the second base station and the serving gateway Correspondence relationship;
  • the indication information is further used to request that the second target bearer that has been released on the second base station is switched to the primary cell group bearer on the first base station, and the second target bearer passes the correspondence table and the Corresponding to the bearer identifier;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer and a third target bearer on the first base station, where the terminal is used to send data,
  • the third target bearer is a bearer on the second base station where the GTP error does not occur.
  • the first target bearer is a secondary cell group bearer on the third base station and the third target bearer, and the bearer and signal strength on the third base station meet a preset requirement.
  • the method further includes:
  • the first base station sends a first bearer modification indication message to the core network device, where the first bearer modification indication message is used to instruct the core network device to bear the secondary cell group bearer on the second base station. Switching to the primary cell group bearer on the first base station.
  • the method further includes:
  • the first base station sends a second bearer modification indication message to the core network device, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as the The primary cell group bearer on the first base station.
  • the method further includes:
  • the first base station sends a third bearer modification indication message to the core network device, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as the The secondary cell group bearer on the third base station.
  • the method further includes:
  • the first base station sends a fourth bearer modification indication message to the core network device, where the fourth bearer modification indication message is used to indicate that the core network device uses the second target bearer on the second base station Switching to a primary cell group bearer on the first base station;
  • the target bearer is established as a primary cell group bearer on the first base station.
  • the method further includes:
  • a second aspect of the embodiments of the present invention provides a carrier aggregation method, including:
  • the second base station detects whether at least one bearer on the second base station has a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway;
  • the second base station releases at least one bearer that occurs the GTP error between the second base station and the serving gateway;
  • the second base station sends the indication information to the first base station, where the indication information is used to indicate that at least one bearer on the second base station is due to a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway. released.
  • the indication information is further used to request that at least one bearer that has been released on the second base station is switched due to the GTP error bearer between the second base station and the serving gateway, so that the second base station is assisted
  • the cell group bearer is switched to the primary cell group bearer on the first base station, or the secondary cell group bearer on the second base station is switched to the secondary cell group bearer on the third base station, and the bearer and signal on the third base station The strength meets the preset requirements.
  • the indication information includes a bearer cause value, and the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway.
  • the method further includes:
  • the correspondence table Transmitting, by the second base station, the correspondence table to the first base station, where the correspondence table includes at least one bearer and bearer identifier that is released due to the GTP error between the second base station and the serving gateway Correspondence relationship;
  • a third aspect of the embodiments of the present invention provides a carrier aggregation method, including:
  • Radio resource connection reconfiguration message sent by the first base station, where the radio resource connection reconfiguration The message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer on the first base station used by the terminal to send data; the method further includes:
  • the terminal transmits data by using a primary cell group bearer on the first base station.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer on a third base station used by the terminal to send data, and the bearer on the third base station And the signal strength meets the preset requirement; the method further includes:
  • the terminal transmits data by using a secondary cell group bearer on the third base station.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer and a third target bearer on the first base station, where the terminal is used to send data,
  • the third target bearer is a bearer that does not have the GTP error on the second base station; the method further includes:
  • the terminal sends data by using a primary cell group bearer on the first base station and the third target bearer.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer and a third target bearer on the third base station, and bearer and signal strength on the third base station
  • the third target bearer is a bearer that does not have the GTP error on the second base station, and the method further includes:
  • the terminal sends data by using a secondary cell group bearer on the third base station and the third target bearer.
  • a fourth aspect of the embodiments of the present invention provides a carrier aggregation method, including:
  • the core network device performs corresponding bearer switching according to the bearer indication message.
  • the bearer indication message is a first bearer modification indication message, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station to the first base station.
  • Primary cell group bearer
  • the corresponding bearer switching performed by the core network device according to the bearer indication message includes:
  • the core network device switches the secondary cell group bearer on the second base station to the primary cell group bearer on the first base station.
  • the bearer indication message is a second bearer modification indication message, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a primary cell on the first base station.
  • the corresponding bearer switching performed by the core network device according to the bearer indication message includes:
  • the core network device establishes the released secondary cell group bearer as a primary cell group bearer on the first base station.
  • the bearer indication message is a third bearer modification indication message, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a secondary cell on the third base station.
  • the corresponding bearer switching performed by the core network device according to the bearer indication message includes:
  • the core network device establishes the released secondary cell group bearer as the third base station
  • the secondary cell group carries.
  • the bearer indication message is a fourth bearer modification indication message, where the fourth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the first base station Hosting on the primary cell group;
  • the corresponding bearer switching performed by the core network device according to the bearer indication message includes:
  • the core network device switches the second target bearer on the second base station to a primary cell group bearer on the first base station;
  • the bearer indication message is a fifth bearer modification indication message, where the fifth bearer modification indication message is used to indicate that the core network device establishes the second target bearer that has been released on the second base station as the first The primary cell group bearer on a base station;
  • the corresponding bearer switching performed by the core network device according to the bearer indication message includes:
  • the core network device establishes the second target bearer that has been released on the second base station as a primary cell group bearer on the first base station.
  • the bearer indication message is a sixth bearer modification indication message, where the sixth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the third base station The secondary cell group on the bearer;
  • the corresponding bearer switching performed by the core network device according to the bearer indication message includes:
  • the core network device switches the second target bearer on the second base station to a secondary cell group bearer on the third base station.
  • a fifth aspect of the embodiments of the present invention provides a first base station, including:
  • a first receiving unit configured to receive indication information sent by the second base station, where the indication information is used to indicate that at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway Released by mistake;
  • a first sending unit configured to send a radio resource connection reconfiguration message to the terminal, where the radio resource is connected
  • the reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal.
  • the first base station further includes:
  • a second receiving unit configured to receive a correspondence table sent by the second base station, where the correspondence table includes at least one bearer that is released due to the GTP error between the second base station and the serving gateway Corresponding relationship of bearer identifiers;
  • a third receiving unit configured to receive the bearer identifier sent by the second base station.
  • the first base station further includes:
  • a second sending unit configured to send a first bearer modification indication message to the core network device, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station to The primary cell group on the first base station bears.
  • the first base station further includes:
  • a third sending unit configured to send a second bearer modification indication message to the core network device, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as The primary cell group on the first base station bears.
  • the first base station further includes:
  • a fourth sending unit configured to send a third bearer modification indication message to the core network device, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as The secondary cell group on the third base station bears.
  • the first base station further includes:
  • a fifth sending unit configured to send a fourth bearer modification indication message to the core network device, where the fourth bearer modification indication message is used to instruct the core network device to use the second
  • the target bearer is switched to the primary cell group bearer on the first base station
  • a sixth sending unit configured to send a fifth bearer modification indication message to the core network device, where the fifth bearer modification indication message is used to indicate that the core network device releases the
  • the second target bearer is established as a primary cell group bearer on the first base station.
  • the first base station further includes:
  • a seventh sending unit configured to send a sixth bearer modification indication message to the core network device, where the sixth bearer modification indication message is used to indicate that the core network device uses the second on the second base station
  • the target bearer is handed over to the secondary cell group bearer on the third base station.
  • a sixth aspect of the embodiments of the present invention provides a second base station, including:
  • a detecting unit configured to detect, by the at least one bearer on the second base station, whether a general packet radio system tunneling protocol GTP error between the second base station and the serving gateway occurs;
  • a releasing unit configured to release at least one occurrence of the second base station and the serving gateway if at least one bearer on the second base station occurs a general packet radio system tunneling protocol GTP error between the second base station and a serving gateway The bearer of the GTP error between;
  • An eighth sending unit configured to send the indication information to the first base station, where the indication information is used to indicate that the at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway The error was released.
  • the second base station further includes:
  • a ninth sending unit configured to send a correspondence table to the first base station, where the correspondence table includes at least one bearer that is released due to the GTP error between the second base station and the serving gateway Corresponding relationship of bearer identifiers;
  • a tenth sending unit configured to send the bearer identifier to the first base station, so that the first base station determines that the GTP error bearer between the second base station and the serving gateway occurs.
  • a seventh aspect of the embodiments of the present invention provides a terminal, including:
  • a fourth receiving unit configured to receive a radio resource connection reconfiguration message sent by the first base station, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one hosted on the second base station Configuration
  • a deleting unit configured to delete, according to the radio resource connection reconfiguration message, at least one configuration that is carried on the terminal by the second base station.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer on the first base station used by the terminal to send data; the terminal further includes:
  • the eleventh sending unit is configured to send data by using a primary cell group bearer on the first base station.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer on a third base station used by the terminal to send data, and the bearer on the third base station And the signal strength meets the preset requirement; the terminal further includes:
  • the twelfth sending unit is configured to send data by using a secondary cell group bearer on the third base station.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer and a third target bearer on the first base station, where the terminal is used to send data,
  • the third target bearer is a bearer that does not have the GTP error on the second base station; the terminal further includes:
  • a thirteenth sending unit configured to send data by using a primary cell group bearer on the first base station and the third target bearer.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer and a third target bearer on the third base station, and bearer and signal strength on the third base station
  • the third target bearer is a bearer that does not have the GTP error on the second base station
  • the terminal further includes:
  • a fourteenth sending unit configured to send data by using the secondary cell group bearer on the third base station and the third target bearer.
  • An eighth aspect of the embodiments of the present invention provides a core network device, including:
  • a fifth receiving unit configured to receive a bearer indication message sent by the first base station, where the bearer indication message is used by the first base station to instruct the core network device to perform bearer switching;
  • a switching unit configured to perform corresponding bearer switching according to the bearer indication message.
  • the bearer indication message is a first bearer modification indication message, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station to the first base station.
  • the primary cell group bearer; the switching unit is further configured to switch the secondary cell group bearer on the second base station to a primary cell group bearer on the first base station.
  • the bearer indication message is a second bearer modification indication message, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a primary cell on the first base station.
  • the bearer unit is further configured to establish the released secondary cell group bearer as a primary cell group bearer on the first base station.
  • the bearer indication message is a third bearer modification indication message, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a secondary cell on the third base station.
  • the bearer unit is further configured to establish the released secondary cell group bearer as a secondary cell group bearer on the third base station.
  • the bearer indication message is a fourth bearer modification indication message, where the fourth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the first base station
  • the primary cell group bearer on the first base station The primary cell group bearer on the first base station
  • the switching unit is further configured to switch the second target bearer on the second base station to a primary cell group bearer on the first base station;
  • the bearer indication message is a fifth bearer modification indication message, where the fifth bearer modification indication message is used to indicate that the core network device establishes the second target bearer that has been released on the second base station as the first a primary cell group bearer on a base station; the handover unit is further configured to establish the second target bearer that has been released on the second base station as a primary cell group bearer on the first base station.
  • the bearer indication message is a sixth bearer modification indication message, where the sixth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the third base station
  • the secondary cell group bearer on the third base station and the switching unit is further configured to switch the second target bearer on the second base station to a secondary cell group bearer on the third base station.
  • a ninth aspect of the embodiments of the present invention provides a system
  • the first base station is as described in any one of the fifth aspect of the fifth embodiment of the present invention to the fifth aspect of the embodiment of the present invention;
  • the second base station is as described in the sixth aspect of the embodiment of the present invention or the first implementation manner of the sixth aspect of the embodiment of the present invention;
  • the terminal is as described in any one of the seventh aspect of the embodiment of the present invention to the fourth implementation manner of the seventh aspect of the embodiment of the present invention;
  • the core network device is as described in any one of the eighth aspect of the embodiment of the present invention to the fifth implementation manner of the eighth aspect of the embodiment of the present invention;
  • a tenth aspect of the embodiments of the present invention provides a first base station
  • Memory central processing unit, peripheral interface, RF circuit, power management chip, and communication bus;
  • the central processor performs the following operations:
  • Radio resource connection reconfiguration message Sending a radio resource connection reconfiguration message to the terminal, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal.
  • the central processor performs the following operations:
  • the correspondence table includes at least one corresponding relationship between a bearer and a bearer identifier that is released due to the GTP error between the second base station and the serving gateway;
  • the central processor performs the following operations:
  • the central processor performs the following operations:
  • the central processor performs the following operations:
  • the central processor performs the following operations:
  • the central processor performs the following operations:
  • An eleventh embodiment of the present invention provides a second base station, including:
  • Memory central processing unit, peripheral interface, RF circuit, power management chip, and communication bus;
  • the central processor performs the following operations:
  • the indication information is used to indicate that the at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway The error was released.
  • the central processor performs the following operations:
  • the correspondence table includes at least one corresponding relationship between the bearer and the bearer identifier that is released due to the GTP error between the second base station and the serving gateway;
  • a twelfth aspect of the embodiments of the present invention provides a terminal, including:
  • Memory central processing unit, peripheral interface, RF circuit, power management chip, and communication bus;
  • the central processor performs the following operations:
  • Radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer on a first base station used by the terminal to send data; the central processor performs the following operations. :
  • the data is transmitted through the primary cell group bearer on the first base station.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer on a third base station used by the terminal to send data; and the central processing unit performs the following operations. :
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer and a third target bearer on the first base station, where the terminal is used to send data,
  • the third target bearer is a bearer on the second base station where the GTP error does not occur;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer and a third target bearer on the third base station, and bearer and signal strength on the third base station And satisfying the preset requirement, the third target bearer is a bearer that does not have the GTP error on the second base station; and the central processing unit performs the following operations:
  • a thirteenth aspect of the embodiments of the present invention provides a core network device, including:
  • Memory central processing unit, peripheral interface, RF circuit, power management chip, and communication bus;
  • the central processor performs the following operations:
  • the bearer indication message is a first bearer modification indication message, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station to the first base station.
  • the primary cell group carries; the central processor performs the following operations:
  • the bearer indication message is a second bearer modification indication message, and the second bearer modification indication message is And the instructing the core network device to establish the released secondary cell group bearer as the primary cell group bearer on the first base station; the central processing unit performs the following operations:
  • the released secondary cell group bearer is established as a primary cell group bearer on the first base station.
  • the bearer indication message is a third bearer modification indication message, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a secondary cell on the third base station.
  • Group bearer the central processor performs the following operations:
  • the released secondary cell group bearer is established as a secondary cell group bearer on the third base station.
  • the bearer indication message is a fourth bearer modification indication message, where the fourth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the first base station
  • the primary cell group is carried; the central processor performs the following operations:
  • the bearer indication message is a fifth bearer modification indication message, where the fifth bearer modification indication message is used to indicate that the core network device establishes the second target bearer that has been released on the second base station as the first A primary cell group bearer on a base station; the central processor performs the following operations:
  • the second target bearer that has been released on the second base station is established as a primary cell group bearer on the first base station.
  • the bearer indication message is a sixth bearer modification indication message, where the sixth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the third base station
  • the secondary cell group is carried; the central processor performs the following operations:
  • the second target bearer on the second base station is switched to a secondary cell group bearer on the third base station.
  • the invention provides a carrier aggregation method, related device and system.
  • the carrier aggregation method includes: the first base station receiving the indication information sent by the second base station, where the indication information is used to indicate that the at least one bearer on the second base station is a tunnel of a general packet radio system between the second base station and the serving gateway.
  • the first base station sends a radio resource connection reconfiguration message to the terminal, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one bearer on the second base station in the terminal. Configuration on.
  • a bearer with a GTP error occurs on the second base station, all bearers on the first base station and the second base station do not need to be released, but only the second base station is released.
  • a bearer with a GTP error occurs or only a bearer on the second base station is released, and all configurations of the first base station and the second base station on the terminal do not have to be deleted, thereby avoiding a link between the base station and the terminal.
  • the interruption reduces the release of the bearer and re-establishes the control signaling data in the bearer process, improves the efficiency of user data transmission, and improves the user experience.
  • FIG. 1 is a flow chart of steps of a preferred embodiment of a carrier aggregation method according to an embodiment of the present invention
  • FIG. 2 is a flow chart of steps of another preferred embodiment of a carrier aggregation method according to an embodiment of the present invention
  • FIG. 3 is a flow chart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure
  • FIG. 4 is a flow chart of steps of another preferred embodiment of a carrier aggregation method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure.
  • FIG. 10 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure.
  • FIG. 11 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure.
  • FIG. 13 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure.
  • FIG. 14 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure.
  • FIG. 15 is a flowchart of another preferred embodiment of a carrier aggregation method according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a first embodiment of a first base station according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of another preferred embodiment of a first base station according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of another preferred embodiment of a first base station according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of a second base station according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of another preferred embodiment of a second base station according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of a preferred embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 22 is a schematic structural diagram of another preferred embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 23 is a schematic structural diagram of a core network device according to an embodiment of the present disclosure.
  • FIG. 24 is a schematic structural diagram of another preferred embodiment of a core network device according to an embodiment of the present disclosure.
  • FIG. 25 is a schematic structural diagram of another preferred embodiment of a first base station according to an embodiment of the present disclosure.
  • FIG. 26 is a schematic structural diagram of another preferred embodiment of a second base station according to an embodiment of the present disclosure.
  • FIG. 27 is a schematic structural diagram of another preferred embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 28 is a schematic structural diagram of another preferred embodiment of a core network device according to an embodiment of the present invention.
  • a carrier aggregation method is described in detail below in conjunction with FIG. 1 as follows:
  • the first base station receives the indication information sent by the second base station.
  • the first base station is the primary base station (MeNB, the master eNB), and the second base station is the secondary base station (SeNB, the secondary eNB) as an example, and the specific number of the second base station in this embodiment is used. Not limited.
  • the indication information is generated by the second base station, that is, if the second base station detects that at least one bearer on the second base station is a GTP error due to a general packet radio system tunneling protocol between the second base station and the serving gateway, Not transmitting a GTP error indication to the serving gateway, but correspondingly generating an indication for indicating that at least one bearer on the second base station is released due to a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway Information, and the second base station sends to the first base station through the X2 interface.
  • the first base station determines, according to the received indication information, that at least one bearer on the second base station is released.
  • the reason for the release of the at least one bearer on the second base station is not limited in this embodiment.
  • at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway. The error was released.
  • the first base station sends a radio resource connection reconfiguration message to the terminal.
  • the indication information is not limited, as long as the first base station can determine, according to the indication information, that at least one bearer on the second base station is released.
  • the first base station correspondingly generates the radio resource connection reconfiguration message according to the received indication information, where the radio resource connection reconfiguration message is used to instruct the terminal to delete the second base station At least one configuration carried on the terminal.
  • the first base station sends the generated radio resource connection reconfiguration message to the terminal, so that the terminal deletes, according to the radio resource connection reconfiguration message, at least one bearer on the second base station, Configuration.
  • the first base station if the second base station detects that the GTP error between the second base station and the serving gateway is caused by the at least one bearer on the second base station, the first base station is notified by using the indication information, so that The first base station may determine that at least one bearer on the second base station is released according to the indication information, and the first base station generates a radio resource connection reconfiguration message according to the situation that the bearer is released on the second base station, so that the terminal And releasing the corresponding configuration according to the radio resource connection reconfiguration message, so as to prevent the terminal from deleting the configuration of the bearer on the terminal that does not have the GTP error on the first base station, and avoiding re-establishment between the first base station and the terminal.
  • the user context enhances the user experience.
  • the present invention effectively guarantees that even if the bearer on the second base station is released, The normal transmission of the user data is not affected. It should be noted that the following embodiments are described by way of example and are not limited as long as the core network does not release all bearers and UE connections.
  • the first base station receives the indication information sent by the second base station.
  • the second base station detects that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station, but the second base station does not pass the S1-U
  • the GTP error is indicated to the serving gateway, and the indication information is generated correspondingly.
  • the first base station determines, according to the received indication information, that at least one bearer on the second base station is released.
  • the reason for the release of the at least one bearer on the second base station is not limited in this embodiment.
  • at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway. The error was released.
  • the indication information may be newly defined information of the second base station, and the second base station and the first base station pre-arrange the indication information may indicate the The GTP error occurs on at least one bearer on the second base station;
  • the indication information is SeNB Modification Required (SeNB Modification Required)
  • the SeNB modification request message is used by the second base station to instruct the first base station to perform handover of the bearer.
  • the SeNB modification request message may be used by the second base station to indicate the second base station.
  • the secondary cell group bearer handover to the primary cell group bearer on the first base station.
  • the SeNB modification request message in this embodiment further carries a GTP error indication, so that the second base station informs the first base station that the GTP error occurs on at least one bearer on the second base station.
  • the indication information may be an X2 port reset (Reset) message, and the second base station and the first base station pre-agreed that the indication information may indicate that the GTP error occurs on at least one bearer on the second base station. So that the second base station implicitly indicates by the reset message that the GTP error occurs on the second base station.
  • Reset X2 port reset
  • the indication information is a SeNB Release Required message
  • the SeNB release request message is used to request that the second base station release all secondary cell group bearers.
  • the indication information of the embodiment may further include a bearer cause value, where the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway. So that the first base station can determine a bearer in which the GTP error occurs specifically.
  • the second base station sends the indication information by using the X2 interface with the first base station, and after sending the indication information, the second base station stops sending over the air interface. Data, and is ready to release at least one bearer on the second base station, and/or context information of the terminal.
  • the first base station sends an acknowledgement message to the second base station.
  • the first base station after receiving the indication information sent by the second base station, if the first base station agrees to release at least one bearer on the second base station, the first base station generates the acknowledgement message to pass the acknowledgement. The message notifies the second base station that at least one bearer on the second base station is agreed to release.
  • the acknowledgment message may include a data forwarding message, so that the second base station forwards the uplink data and the downlink data buffered by the second base station to the first base station by using the data forwarding message, to prevent the base station from Interruption of the connection between the terminals.
  • the step 202 of the embodiment is optional.
  • the second base station may also send, by using the indication information, a request for the first base station to agree to release the bearer by the second base station.
  • the first base station determines, according to the indication information, a first target bearer.
  • the first target bearer is a bearer used by the terminal to send data
  • the first target bearer determined by the first base station according to the indication information is a primary cell group bearer on the first base station.
  • the first base station determines a radio resource connection reconfiguration (RRC Connection Reconfiguration) message according to the first target bearer.
  • RRC Connection Reconfiguration radio resource connection reconfiguration
  • the terminal determines, according to the radio resource connection reconfiguration message, that the secondary cell group bearer on the at least one second base station needs to be handed over to the primary cell group bearer on the first base station.
  • the first base station sends the radio resource connection reconfiguration message to the terminal.
  • the terminal deletes at least one configuration carried on the terminal by the second base station according to the radio resource connection reconfiguration message.
  • the second base station has released at least one bearer on the second base station, and the terminal may delete at least one of the second base station according to the radio resource connection reconfiguration message.
  • the configuration carried on the terminal is not limited to
  • the first base station receives a response message sent by the terminal.
  • the terminal After the terminal performs the corresponding configuration deletion according to the radio resource connection reconfiguration message, the terminal generates a response message corresponding to the first base station to notify the first base station that the terminal deletion configuration is completed.
  • the first base station generates, according to the indication information, a first bearer modification indication message.
  • the first base station After the first base station receives the response message, the first base station generates a first bearer modification indication message according to the indication information, and the first bearer modification indication message in this embodiment may be an E-RAB. Modification Indication message.
  • the first base station sends the generated first bearer modification indication message to the core network device.
  • the core network device shown in this embodiment is a mobility management entity MME and a serving gateway (SGW), or a network element for implementing the MME and the SGW function.
  • MME mobility management entity
  • SGW serving gateway
  • the core network device may perform corresponding path switching.
  • the core network device uses the secondary cell on the second base station.
  • the group bearer is switched to the primary cell group bearer on the first base station, so that the data on the bearer with the GTP error does not disappear during the handover process, and the data on the bearer with the GTP error occurs through the first base station.
  • the primary cell group bearer continues to transmit to ensure normal transmission of user data, and the core network device is prevented from releasing all bearers on the first base station and the second base station due to the GTP error, and the terminal may be avoided. All the configurations corresponding to the bearer on the terminal are deleted, which effectively reduces the number of control signaling sent by the core network device to re-establish the bearer, and improves the efficiency of data transmission and the user experience.
  • the first base station receives the indication information sent by the second base station.
  • the second base station detects that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station, but the second base station does not pass the S1-U
  • the GTP error is indicated to the serving gateway, and the indication information is generated correspondingly.
  • the first base station determines, according to the received indication information, that at least one bearer on the second base station is released.
  • the reason for the release of the at least one bearer on the second base station is not limited in this embodiment.
  • at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway. The error was released.
  • the indication information may be newly defined information of the second base station, and the second base station and the first base station pre-arrange the indication information may indicate the The GTP error occurs on at least one bearer on the second base station;
  • the indication information is a SeNB Modification Required message
  • the SeNB modification request message is used by the second base station to request release of a secondary cell group bearer on the second base station
  • the released device is
  • the secondary cell group bearer on the second base station is configured to establish a primary cell group bearer on the first base station
  • the SeNB modification request message in the embodiment further carries a GTP error indication, so that the second base station informs the The GTP error occurs in at least one bearer on the second base station of the first base station.
  • the indication information may be an X2 port reset (Reset) message, and the second base station and the first base station pre-agreed that the indication information may indicate that the GTP error occurs on at least one bearer on the second base station. So that the second base station implicitly indicates the GTP error through the reset message. The error occurs on the second base station.
  • Reset X2 port reset
  • the indication information is a SeNB Release Required message
  • the SeNB release request message is used to request that the second base station release all secondary cell group bearers.
  • the indication information of the embodiment may further include a bearer cause value, where the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway. So that the first base station can determine a bearer in which the GTP error occurs specifically.
  • the second base station sends the indication information by using the X2 interface with the first base station, and after sending the indication information, the second base station stops sending over the air interface. Data, and is ready to release context information of at least one bearer and/or terminal on the second base station.
  • the first base station sends an acknowledgement message to the second base station.
  • the first base station after receiving the indication information sent by the second base station, if the first base station agrees to release at least one bearer on the second base station, the first base station generates the acknowledgement message to pass the acknowledgement. The message notifies the second base station that at least one bearer on the second base station is agreed to release.
  • the acknowledgment message may include a data forwarding message, so that the second base station forwards the uplink data and the downlink data buffered by the second base station to the first base station by using the data forwarding message, to prevent the base station from Interruption of the connection between the terminals.
  • the second base station may also send, by using the indication information, a request for the first base station to agree to release the bearer by the second base station.
  • the first base station determines, according to the indication information, a first target bearer.
  • the first target bearer is a bearer used by the terminal to send data
  • the first target bearer determined by the first base station according to the indication information is a primary cell group bearer on the first base station.
  • the first base station determines a radio resource connection reconfiguration (RRC Connection Reconfiguration) message according to the first target bearer.
  • RRC Connection Reconfiguration radio resource connection reconfiguration
  • the terminal determines, according to the radio resource connection reconfiguration message, that the secondary cell group bearer on the at least one second base station needs to be handed over to the primary cell group bearer on the first base station.
  • the first base station sends the radio resource connection reconfiguration message to the terminal.
  • the terminal deletes at least one configuration carried on the terminal by the second base station according to the radio resource connection reconfiguration message.
  • the second base station has released at least one bearer on the second base station, and the terminal may delete at least one of the second base station according to the radio resource connection reconfiguration message.
  • the configuration carried on the terminal is not limited to
  • the first base station receives a response message sent by the terminal.
  • the terminal After the terminal performs the corresponding configuration deletion according to the radio resource connection reconfiguration message, the terminal generates a response message corresponding to the first base station to notify the first base station that the terminal deletion configuration is completed.
  • the first base station generates a second bearer modification indication message according to the indication information.
  • the first base station After the first base station receives the response message, the first base station generates a second bearer modification indication message according to the indication information, where the second bearer modification indication message in this embodiment may be an E-RAB. Modification Indication message.
  • the first base station sends the generated second bearer modification indication message to the core network device.
  • the core network device shown in this embodiment is a mobility management entity MME and a serving gateway (SGW), or a network element for implementing the MME and the SGW function.
  • MME mobility management entity
  • SGW serving gateway
  • the core network device may perform corresponding path switching.
  • the core network device releases the second base station.
  • the primary cell group bearer is set up to the primary cell group bearer on the first base station to ensure normal transmission of user data, and the core network device is prevented from being connected to the first base station and the second base station due to the GTP error. All the bearers are released, and the terminal can be prevented from deleting all the configurations corresponding to the bearers on the terminal, thereby effectively reducing the number of control signaling sent by the core network device to re-establish the bearer, improving the efficiency of data transmission and the user experience. .
  • the first base station receives the indication information sent by the second base station.
  • the second base station detects that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station, but the second base station does not pass the S1-U Place
  • the GTP error indication is sent to the serving gateway, but the indication information is generated correspondingly.
  • the first base station determines, according to the received indication information, that at least one bearer on the second base station is released.
  • the reason for the release of the at least one bearer on the second base station is not limited in this embodiment.
  • at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway. The error was released.
  • the indication information may be newly defined information of the second base station, and the second base station and the first base station pre-arrange the indication information may indicate the The GTP error occurs on at least one bearer on the second base station;
  • the indication information is a SeNB Modification Required message
  • the SeNB modification request message is used by the second base station to instruct the first base station to perform handover of the bearer.
  • the SeNB modification request is required.
  • the message may be that the second base station indicates that the secondary cell group bearer on the second base station performs handover, and the SeNB modification request message in the embodiment further carries a GTP error indication, so that the second base station notifies the The GTP error occurs on at least one bearer on the second base station of a base station.
  • the indication information may be an X2 port reset (Reset) message, and the second base station and the first base station pre-agreed that the indication information may indicate that the GTP error occurs on at least one bearer on the second base station. So that the second base station implicitly indicates by the reset message that the GTP error occurs on the second base station.
  • Reset X2 port reset
  • the indication information is a SeNB Release Required message
  • the SeNB release request message is used to request that the second base station release all secondary cell group bearers.
  • the indication information of the embodiment may further include a bearer cause value, where the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway. So that the first base station can determine a bearer in which the GTP error occurs specifically.
  • the second base station sends the indication information to the indication information through the S1-U between the first base station, and after the second base station sends the indication information, stops the air interface. Transmitting data and preparing to release context information of at least one bearer and/or terminal on the second base station.
  • the first base station sends an acknowledgement message to the second base station.
  • the first base station After the first base station receives the indication information sent by the second base station, if the consent is agreed And placing, by the first base station, the acknowledgement message, to notify the second base station that at least one bearer on the second base station is agreed to release by using the acknowledgement message.
  • the acknowledgment message may include a data forwarding message, so that the second base station forwards the uplink data and the downlink data buffered by the second base station to the first base station by using the data forwarding message, to prevent the base station from Interruption of the connection between the terminals.
  • the step 202 of the embodiment is optional.
  • the second base station may also send, by using the indication information, a request for the first base station to agree to release the bearer by the second base station.
  • the first base station determines, according to the indication information, that the third base station is satisfied.
  • the bearer and the signal strength on the third base station meet preset requirements, so that the third base station that meets the preset condition can ensure normal transmission of user data.
  • the first base station determines that the third base station is a first target bearer.
  • the first target bearer is a bearer used by the terminal to send data
  • the first target bearer determined by the first base station according to the indication information is a secondary cell group bearer on the third base station.
  • the first base station determines a radio resource connection reconfiguration (RRC Connection Reconfiguration) message according to the first target bearer.
  • RRC Connection Reconfiguration radio resource connection reconfiguration
  • the terminal determines, according to the radio resource connection reconfiguration message, that the secondary cell group bearer on the at least one second base station needs to be handed over to the primary cell group bearer on the first base station.
  • the first base station sends the radio resource connection reconfiguration message to the terminal.
  • the terminal deletes at least one configuration carried on the terminal by the second base station according to the radio resource connection reconfiguration message.
  • the second base station has released at least one bearer on the second base station, and the terminal may delete at least one of the second base station according to the radio resource connection reconfiguration message.
  • the configuration carried on the terminal is not limited to
  • the first base station receives a response message sent by the terminal.
  • the terminal After the terminal performs corresponding configuration deletion according to the radio resource connection reconfiguration message, the terminal generates a response message to notify the first base station that the terminal deletes and configures the configuration by using the response message. to make.
  • the first base station generates, according to the indication information, a third bearer modification indication message.
  • the first base station After the first base station receives the response message, the first base station generates a third bearer modification indication message according to the indication information, where the third bearer modification indication message in this embodiment may be an E-RAB. Modification Indication message.
  • the first base station sends the generated third bearer modification indication message to the core network device.
  • the core network device may perform corresponding path switching.
  • the core network device uses the second base station
  • the cell group bearer is switched to the secondary cell group bearer on the third base station, so that the data on the bearer with the GTP error does not disappear during the handover process, and the data on the bearer with the GTP error occurs through the third base station.
  • the secondary cell group bearer continues to transmit to ensure normal transmission of user data, and the core network device is prevented from releasing all bearers on the first base station and the second base station due to the GTP error, and the terminal can also be avoided. All the configurations corresponding to the bearer on the terminal are deleted, which effectively reduces the number of control signaling sent by the core network device to re-establish the bearer, and improves the efficiency of data transmission and the user experience.
  • the first base station receives a correspondence table sent by the second base station.
  • the second base station establishes a correspondence table, where the correspondence table includes at least one bearer corresponding to the bearer identifier that is released due to the GTP error between the second base station and the serving gateway. relationship;
  • the correspondence relationship table in this embodiment may also establish a correspondence between each bearer and the identifier on the second base station, where the corresponding relationship table includes at least one due to the second base station and The corresponding relationship between the bearer and the bearer identifier that is released by the GTP error between the service gateways is taken as an example for description.
  • the bearer identity is sent to the first base station.
  • the bearer identifier is not limited in this embodiment, and the bearer identifier may be a serial number.
  • the bearer identifier is a Tunnel Endpoint IDentifier (Tunnel Endpoint IDentifier).
  • the first base station receives the bearer identifier sent by the second base station.
  • the first base station may determine, according to the correspondence, a bearer with a GTP error on the second base station corresponding to the bearer identifier.
  • the first base station receives the indication information sent by the second base station.
  • the second base station detects that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station, but the second base station does not pass the S1-U
  • the GTP error is indicated to the serving gateway, and the indication information is generated correspondingly.
  • the first base station determines, according to the received indication information, that at least one bearer on the second base station is released.
  • the reason for the release of the at least one bearer on the second base station is not limited in this embodiment.
  • at least one bearer on the second base station is a GTP of a general packet radio system tunneling protocol between the second base station and the serving gateway. The error was released.
  • the indication information may be newly defined information of the second base station, and the second base station and the first base station pre-arrange the indication information may indicate the The GTP error occurs on at least one bearer on the second base station;
  • the indication information is a SeNB Modification Required message
  • the SeNB modification request message is used by the second base station to request that the second target bearer that has been released on the second base station is switched to the a primary cell group bearer on a base station, or the SeNB modification request message is used by the second base station to request the second target bearer that has been released on the second base station to establish a primary cell group on the first base station
  • the second target bearer corresponds to the bearer identifier by using the corresponding relationship table
  • the SeNB modification request message in the embodiment further carries a GTP error indication, so that the second base station informs the first base station The GTP error occurs on at least one bearer on the second base station.
  • the indication information may be an X2 port reset (Reset) message, and the second base station and the first base station pre-agreed that the indication information may indicate that the GTP error occurs on at least one bearer on the second base station. So that the second base station implicitly indicates by the reset message that the GTP error occurs on the second base station.
  • Reset X2 port reset
  • the indication information is a SeNB Release Required message
  • the SeNB release request message is used to request that the second base station release all secondary cell group bearers.
  • the indication information of the embodiment may further include a bearer cause value, where the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway. So that the first base station can determine a bearer in which the GTP error occurs specifically.
  • the second base station sends the indication information to the indication information through the S1-U between the first base station, and after the second base station sends the indication information, stops the air interface. Transmitting data and preparing to release context information of at least one bearer and/or terminal on the second base station.
  • the first base station sends an acknowledgement message to the second base station.
  • the first base station after receiving the indication information sent by the second base station, if the first base station agrees to release at least one bearer on the second base station, the first base station generates the acknowledgement message to pass the acknowledgement. The message notifies the second base station that at least one bearer on the second base station is agreed to release.
  • the acknowledgment message may include a data forwarding message, so that the second base station forwards the uplink data and the downlink data buffered by the second base station to the first base station by using the data forwarding message, to prevent the base station from Interruption of the connection between the terminals.
  • the step 504 of the embodiment is optional.
  • the second base station may also send, by using the indication information, a request for the first base station to agree to release the bearer by the second base station.
  • the first base station determines a third target bearer.
  • the third target bearer is a bearer that does not have the GTP error on the second base station.
  • the first base station determines, according to the indication information, a first target bearer.
  • the first target bearer is a bearer used by the terminal to send data
  • the first target bearer determined by the first base station according to the indication information is a primary cell group bearer and a third target bearer on the first base station, where the terminal is used to send data.
  • the first base station determines a radio resource connection reconfiguration (RRC Connection Reconfiguration) message according to the first target bearer.
  • RRC Connection Reconfiguration radio resource connection reconfiguration
  • the terminal may determine the second target bearing according to the radio resource connection reconfiguration message.
  • the bearer needs to be handed over to the primary cell group bearer on the first base station, or the second target bearer needs to be established to the primary cell group bearer on the first base station.
  • the first base station sends the radio resource connection reconfiguration message to the terminal.
  • the terminal deletes the configuration that the second target bears on the terminal according to the radio resource connection reconfiguration message.
  • the second base station has released the second target bearer
  • the terminal may delete the second target bearer on the second base station according to the radio resource connection reconfiguration message. Configuration on the terminal.
  • the first base station receives a response message sent by the terminal.
  • the terminal After the terminal performs the corresponding configuration deletion according to the radio resource connection reconfiguration message, the terminal generates a response message corresponding to the first base station to notify the first base station that the terminal deletion configuration is completed.
  • the first base station according to the indication information, generates a fourth bearer modification indication message or a fifth bearer modification indication message.
  • the first base station After the first base station receives the response message, the first base station generates a fourth bearer modification indication message or a fifth bearer modification indication message according to the indication information, where the fourth bearer is modified in this embodiment.
  • the indication message or the fifth bearer modification indication message may be an E-RAB Modification Indication message.
  • the first base station sends the generated fourth bearer modification indication message or the fifth bearer modification indication message to the core network device.
  • the core network device may perform corresponding path switching.
  • the core network device may be configured according to the The fourth bearer modification indication message is to switch the second target bearer that has been released on the second base station to the primary cell group bearer on the first base station, or the core network device may be according to the fifth
  • the bearer modification indication message is used to establish a second target bearer that has been released on the second base station to the primary cell group bearer on the first base station, so as to ensure normal transmission of user data, and avoid the core network device from being If the GTP is incorrect, all the bearers on the first base station and the second base station are released, and the terminal can be prevented from deleting all the configurations corresponding to the bearer on the terminal, thereby effectively reducing the transmission of the core network device by re-establishing the bearer. Control the number of signaling, improve the efficiency of data transmission and user body Test.
  • the first base station receives a correspondence table sent by the second base station.
  • the second base station establishes a correspondence table, where the correspondence table includes at least one bearer corresponding to the bearer identifier that is released due to the GTP error between the second base station and the serving gateway. relationship;
  • the correspondence relationship table in this embodiment may also establish a correspondence between each bearer and the identifier on the second base station, where the corresponding relationship table includes at least one due to the second base station and The corresponding relationship between the bearer and the bearer identifier that is released by the GTP error between the service gateways is taken as an example for description.
  • the bearer identity is sent to the first base station.
  • the bearer identifier is not limited in this embodiment, and the bearer identifier may be a sequence number, a field, and the like, and the bearer identifier is, for example, a tunnel endpoint identifier (a tunnel endpoint identifier).
  • the first base station receives the bearer identifier sent by the second base station.
  • the first base station may determine, according to the correspondence, a bearer with a GTP error on the second base station corresponding to the bearer identifier.
  • the first base station receives the indication information sent by the second base station.
  • the first base station sends an acknowledgement message to the second base station.
  • the steps 601 to 604 shown in this embodiment are the same as the steps 501 to 504 shown in FIG. 5, and are not described in this embodiment.
  • the first base station determines a third target bearer.
  • the third target bearer is a bearer that does not have the GTP error on the second base station.
  • the first base station determines a third base station.
  • the bearer and the signal strength on the third base station of the third base station meet preset requirements, so that the third base station that meets the preset requirement can satisfy normal transmission of user data.
  • the first base station determines, according to the indication information, a first target bearer.
  • the first target bearer is a bearer used by the terminal to send data
  • the first target bearer is a secondary cell group bearer on the third base station and the third target bearer.
  • the first base station determines a radio resource connection reconfiguration (RRC Connection Reconfiguration) message according to the first target bearer.
  • RRC Connection Reconfiguration radio resource connection reconfiguration
  • the terminal determines, according to the radio resource connection reconfiguration message, that the second target bearer needs to be handed over to the secondary cell group bearer on the third base station.
  • the first base station sends the radio resource connection reconfiguration message to the terminal.
  • the terminal deletes the configuration that the second target bears on the terminal according to the radio resource connection reconfiguration message.
  • the second base station has released the second target bearer
  • the terminal may delete the second target bearer on the second base station according to the radio resource connection reconfiguration message. Configuration on the terminal.
  • the first base station receives a response message sent by the terminal.
  • the terminal After the terminal performs the corresponding configuration deletion according to the radio resource connection reconfiguration message, the terminal generates a response message corresponding to the first base station to notify the first base station that the terminal deletion configuration is completed.
  • the first base station generates, according to the indication information, a sixth bearer modification indication message.
  • the first base station After the first base station receives the response message, the first base station generates a sixth bearer modification indication message corresponding to the indication information, where the sixth bearer modification indication message or the fifth bearer is modified in this embodiment.
  • the indication message may be an E-RAB Modification Indication message.
  • the first base station sends the generated sixth bearer modification indication message to the core network device.
  • the core network device may perform corresponding path switching.
  • the core network device may modify the sixth bearer according to the sixth bearer.
  • the message is that the second target bearer that has been released on the second base station is switched to the secondary cell group bearer on the third base station, so as to ensure normal transmission of user data, and the core network device is prevented from being caused by the GTP error. All bearers on the first base station and the second base station are released, and the end can also be avoided
  • the terminal deletes all configurations corresponding to the bearer on the terminal, which effectively reduces the number of control signaling sent by the core network device to re-establish the bearer, and improves data transmission efficiency and user experience.
  • FIG. 1 to FIG. 6 illustrates how the first base station implements carrier aggregation.
  • the following embodiments describe how the second base station implements carrier aggregation.
  • the second base station detects, by the at least one bearer on the second base station, whether a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway occurs.
  • the first base station is the primary base station (MeNB, the master eNB), and the second base station is the secondary base station (SeNB, the secondary eNB) as an example, and the specific number of the second base station in this embodiment is used. Not limited.
  • the second base station releases at least one bearer that occurs the GTP error between the second base station and the serving gateway.
  • the second base station shown in this embodiment may release all bearers on the second base station, or may only release bearers in which the GTP error occurs.
  • the number of bearers in which the GTP error occurs may be one or more.
  • the second base station generates indication information.
  • the second base station detects that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station, but the second base station does not pass the S1-U
  • the GTP error is indicated to the serving gateway, and the indication information is generated correspondingly.
  • the indication information is generated by the second base station, that is, if the second base station detects that at least one bearer on the second base station is a GTP error due to a general packet radio system tunneling protocol between the second base station and the serving gateway, The GTP error indication is not sent to the serving gateway, but the indication information is generated correspondingly, and the second base station sends the first base station through the X2-U.
  • the second base station sends the indication information to the first base station.
  • the second base station sends the generated indication information to the first base station, so that the first base station generates the radio resource connection reconfiguration message according to the received indication information,
  • the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal.
  • the GTP error between the second base station and the serving gateway is used to notify the first base station by using the indication information, so that the first base station can determine, according to the indication information, that at least one bearer on the second base station has been released.
  • the first base station generates a radio resource connection reconfiguration message according to the indication information, so that the terminal releases the corresponding configuration according to the radio resource connection reconfiguration message, thereby preventing the terminal from deleting the first base station from appearing.
  • the GTP erroneously carries the configuration on the terminal, thereby avoiding re-establishing the user context between the first base station and the terminal, thereby improving the user experience.
  • the carrier aggregation method implemented by the second base station is further described in detail below with reference to the embodiment shown in FIG. 8:
  • the second base station detects, by the at least one bearer on the second base station, whether a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway occurs.
  • the second base station releases at least one bearer that occurs the GTP error between the second base station and the serving gateway.
  • the second base station generates indication information.
  • the second base station detects that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station, but the second base station does not pass the S1-U
  • the GTP error is indicated to the serving gateway, and the indication information is generated correspondingly.
  • the indication information may be newly defined information of the second base station, and the second base station and the first base station pre-arrange the indication information may indicate the The GTP error occurs on at least one bearer on the second base station;
  • the indication information is a SeNB Modification Required message
  • the SeNB modification request message is used by the second base station to instruct the first base station to perform handover of the bearer.
  • the SeNB modification request is required.
  • the message may be that the secondary cell group bearer on the second base station is requested to be handed over to the primary cell group bearer on the first base station, or the SeNB modification request message may be used to request the secondary cell group bearer on the second base station to be handed over to the third base station.
  • the secondary cell group is carried.
  • the third base station is determined by the first base station, and the load and the signal on the third base station can ensure normal transmission of user data.
  • the SeNB modification request message in this embodiment further carries a GTP error indication, so that the second The base station informs the first base station that the GTP error occurs on at least one bearer on the second base station.
  • the indication information may be an X2 port reset (Reset) message, and the second base station and the first base station pre-agreed that the indication information may indicate that the GTP error occurs on at least one bearer on the second base station. So that the second base station implicitly indicates by the reset message that the GTP error occurs on the second base station.
  • Reset X2 port reset
  • the indication information is a SeNB Release Required message
  • the SeNB release request message is used to request that the second base station release all secondary cell group bearers.
  • the indication information of the embodiment may further include a bearer cause value, where the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway. So that the first base station can determine a bearer in which the GTP error occurs specifically.
  • the second base station sends the indication information by using the X2 interface with the first base station, and after sending the indication information, the second base station stops sending over the air interface. Data, and is ready to release context information of at least one bearer and/or terminal on the second base station.
  • the second base station receives an acknowledgement message sent by the first base station.
  • the first base station after receiving the indication information sent by the second base station, if the first base station agrees to release at least one bearer on the second base station, the first base station generates the acknowledgement message to pass the acknowledgement. The message notifies the second base station that at least one bearer on the second base station is agreed to release.
  • the acknowledgment message may include a data forwarding message, so that the second base station forwards the uplink data and the downlink data buffered by the second base station to the first base station by using the data forwarding message, to prevent the base station from Interruption of the connection between the terminals.
  • the step 804 of the embodiment is optional.
  • the second base station may also send, by using the indication information, a request for the first base station to agree to release the bearer by the second base station.
  • the first target bearer determined by the first base station according to the indication information is a primary cell group bearer on the first base station.
  • the first base station may switch the secondary cell group bearer on the second base station that has been released to the primary cell group bearer on the first base station, or the first base station may release the released
  • the secondary cell group bearer on the second base station is established to the primary cell group bearer on the first base station.
  • the second base station when the second base station determines whether the at least one bearer on the second base station has a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway, the second base station does not Sending a GTP error indication to the serving gateway, and correspondingly generating the indication information, so that the first base station instructs the core network device to perform corresponding path switching according to the indication information, so that the core network device does not carry all the bearers and the terminal
  • the connections are released to ensure the normal transmission of user data and improve the user experience.
  • the second base station generates a correspondence table.
  • the correspondence table includes at least one corresponding relationship between the bearer and the bearer identifier that is released due to the GTP error between the second base station and the serving gateway.
  • the correspondence relationship table in this embodiment may also establish a correspondence between each bearer and the identifier on the second base station, where the corresponding relationship table includes at least one due to the second base station and The corresponding relationship between the bearer and the bearer identifier that is released by the GTP error between the service gateways is taken as an example for description.
  • the bearer identifier is not limited in this embodiment, and the bearer identifier may be a sequence number, a field, and the like, and the bearer identifier is, for example, a tunnel endpoint IDentifier (tunnel endpoint IDentifier).
  • the second base station sends the correspondence table to the first base station.
  • the second base station detects, by the at least one bearer on the second base station, whether a general packet radio system tunneling protocol GTP error between the second base station and the serving gateway occurs.
  • the second base station determines that the bearer with the GTP error is the second target bearer.
  • the second base station releases the second target bearer.
  • the second base station determines, by using the correspondence relationship table, a bearer identifier corresponding to the second target bearer.
  • the second base station sends the bearer identifier to the first base station.
  • the first base station may determine, according to the correspondence, a bearer with a GTP error on the second base station corresponding to the bearer identifier.
  • the second base station generates indication information.
  • the second base station detects that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station, but the second base station does not pass the S1-U
  • the GTP error is indicated to the serving gateway, and the indication information is generated correspondingly.
  • the indication information may be newly defined information of the second base station, and the second base station and the first base station pre-arrange the indication information may indicate the The GTP error occurs on at least one bearer on the second base station;
  • the indication information is a SeNB Modification Required message
  • the SeNB modification request message is used by the second base station to request that the second target bearer that has been released on the second base station is switched to the a primary cell group bearer on a base station, or the SeNB modification request message is used by the second base station to request the second target bearer that has been released on the second base station to establish a primary cell group on the first base station
  • the second target bearer corresponds to the bearer identifier by using the corresponding relationship table
  • the SeNB modification request message in the embodiment further carries a GTP error indication, so that the second base station informs the first base station The GTP error occurs on at least one bearer on the second base station.
  • the indication information may be an X2 port reset (Reset) message, and the second base station and the first base station pre-agreed that the indication information may indicate that the GTP error occurs on at least one bearer on the second base station. So that the second base station implicitly indicates by the reset message that the GTP error occurs on the second base station.
  • Reset X2 port reset
  • the indication information is a SeNB Release Required message
  • the SeNB release request message is used to indicate that the second base station releases the bearer in which the GTP error occurs, that is, the release through the correspondence table and the The bearer corresponding to the bearer identifier.
  • the indication information of the embodiment may further include a bearer cause value, where the bearer cause value is used to indicate at least one bearer that is released due to the GTP error between the second base station and the serving gateway. So that the first base station can determine a bearer in which the GTP error occurs specifically.
  • the second base station sends the indication information to the indication information through the S1-U between the first base station, and after the second base station sends the indication information, stops the air interface. Transmitting data and preparing to release context information of at least one bearer and/or terminal on the second base station.
  • the second base station receives an acknowledgement message sent by the first base station.
  • the first base station receives the indication information sent by the second base station, if the consent is agreed And placing the second target bearer on the second base station, where the first base station generates the acknowledgement message, to notify the second base station of the second target on the second base station by using the acknowledgement message
  • the bearer is agreed to release.
  • the acknowledgment message may include a data forwarding message, so that the second base station forwards the uplink data and the downlink data buffered by the second base station to the first base station by using the data forwarding message, to prevent the base station from Interruption of the connection between the terminals.
  • the second base station may also send, by using the indication information, a request for the first base station to agree to release the bearer by the second base station.
  • the first target bearer determined by the first base station according to the indication information is a primary cell group bearer on the first base station.
  • the first base station may switch the released second target bearer to a primary cell group bearer on the first base station, or the first base station may release the second target bearer that has been released. Establishing a primary cell group bearer to the first base station.
  • the second base station does not need to release all bearers on the second base station, but only needs to release the bearer in which the GTP error occurs, thereby reducing the release of the bearer and the output of the control signaling for re-establishing the bearer. , improve the efficiency of data transmission.
  • the terminal receives a radio resource connection reconfiguration message sent by the first base station;
  • the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal;
  • the terminal deletes, according to the radio resource connection reconfiguration message, at least one configuration that is carried on the terminal by the second base station.
  • the terminal may delete the configuration of all the bearers on the second base station according to the radio resource connection reconfiguration message, or the terminal may be connected according to the radio resource connection. Deleting a configuration of the GTP error on the second base station to prevent the bearer on the second base station from being erroneous, so that the terminal will be all on the first base station and the second base station The configuration on the terminal is deleted to avoid the terminal connected between the terminal and the base station, thereby ensuring normal data transmission, thereby improving the user experience.
  • the terminal receives a radio resource connection reconfiguration message sent by the first base station.
  • the terminal deletes, according to the radio resource connection reconfiguration message, at least one configuration that is carried on the terminal by the second base station;
  • steps 1101 to 1102 in this embodiment are as described in FIG. 10 and are not described in detail in this embodiment.
  • the terminal determines, according to the radio resource connection reconfiguration message, a first target bearer.
  • the first target bearer is a bearer used by the terminal to send data
  • the determining, by the terminal, the first target bearer according to the radio resource connection reconfiguration message may include the following situations:
  • the method is: the radio resource connection reconfiguration message is further used to indicate a first target bearer, and the first target bearer is a primary cell group bearer on the first base station used by the terminal to send data;
  • the terminal may determine, according to the radio resource connection reconfiguration message, that the first target bearer is a primary cell group bearer on the first base station;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, and the first target bearer is a secondary cell group bearer on a third base station used by the terminal to send data, where the The bearer and signal strength on the three base stations meet the preset requirements;
  • the terminal may determine, according to the radio resource connection reconfiguration message, that the first target bearer is a secondary cell group bearer on the third base station;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer on the first base station used by the terminal to send data, and a third target bearer, where the third target bearer is a bearer on the second base station where the GTP error does not occur;
  • the terminal may determine, according to the radio resource connection reconfiguration message, that the first target bearer is a primary cell group bearer and the third target bearer on the first base station;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer and a third target bearer on the third base station, where the third base station is on the third base station.
  • the bearer and the signal strength meet the preset requirement, and the third target bearer is a bearer on the second base station where the GTP error does not occur;
  • the terminal may determine, according to the radio resource connection reconfiguration message, that the first target bearer is a secondary cell group bearer and the third target bearer on the third base station;
  • the terminal sends data by using the determined first target bearer.
  • the terminal determines that the first target bearer is a primary cell group bearer on the first base station, the terminal sends data by using a primary cell group bearer on the first base station.
  • the terminal determines that the first target bearer is a secondary cell group bearer on the third base station that is used by the terminal to send data, the terminal sends data by using the secondary cell group bearer on the third base station;
  • the terminal determines that the first target bearer is a primary cell group bearer and a third target bearer on the first base station, where the terminal is used to send data, the terminal passes the primary on the first base station.
  • the cell group bearer and the third target bearer transmit data;
  • the terminal determines that the first target bearer is a secondary cell group bearer and a third target bearer on the third base station, the terminal passes the secondary cell group bearer on the third base station and the third target bearer send data.
  • the core network device receives a bearer indication message sent by the first base station.
  • the first base station generates the bearer indication message, where the bearer indication message is used by the first base station to instruct the core network device to perform bearer switching.
  • the first base station may indicate, by using the bearer indication information, that the core network device switches the bearer on the second base station or only the GTP error occurs on the second base station. The bearer is switched.
  • the core network device performs corresponding bearer switching according to the bearer indication message.
  • the core network device performs corresponding bearer switching according to the bearer indication message sent by the first base station to ensure normal transmission of user data.
  • the following describes how the core network device specifically performs bearer switching according to the embodiment shown in FIG. 13;
  • the core network device receives a bearer indication message sent by the first base station.
  • the bearer indication message is a first bearer modification indication message, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station to The primary cell group bearer on the first base station;
  • the bearer indication message is a second bearer modification indication message, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as the first base station.
  • Primary cell group bearer
  • the bearer indication message is a third bearer modification indication message, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as the third base station Secondary cell group bearer;
  • the bearer indication message is a fourth bearer modification indication message, where the fourth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the first The primary cell group bearer on a base station;
  • the bearer indication message is a fifth bearer modification indication message, where the fifth bearer modification indication message is used to indicate that the core network device establishes the second target bearer that has been released on the second base station as a Determining a primary cell group bearer on the first base station;
  • the bearer indication message is a sixth bearer modification indication message, where the sixth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the first The secondary cell group bearer on the three base stations;
  • the core network device performs corresponding bearer switching according to the bearer indication message.
  • the core network device switches the secondary cell group bearer on the second base station to the primary cell group bearer on the first base station;
  • the core network device establishes the released secondary cell group bearer as a primary cell group bearer on the first base station;
  • the core network device establishes the released secondary cell group bearer as a secondary cell group bearer on the third base station;
  • the core network device switches the second target bearer on the second base station to a primary cell group bearer on the first base station;
  • the core network device establishes the second target bearer that has been released on the second base station as a primary cell group bearer on the first base station;
  • the core network device will Switching the second target bearer on the second base station to the secondary cell group bearer on the third base station
  • the core network device can perform different bearer switching according to different bearer indication information sent by the first base station, so that the embodiment can be applied to different bearer switching application scenarios.
  • the carrier aggregation method does not send the indication information to the core network device.
  • This embodiment illustrates how the second base station implements the carrier aggregation method by sending a GTP error indication to the core network device.
  • the first base station reports the correspondence table to the core network device.
  • the first base station is the primary base station (MeNB, the master eNB), and the second base station is the secondary base station (SeNB, the secondary eNB) as an example, and the specific number of the second base station in this embodiment is used. Not limited.
  • the first base station determines a correspondence relationship table, where the correspondence relationship table includes a correspondence between each bearer on the first base station and each bearer and the bearer identifier on the second base station.
  • the bearer identifier is not limited in this embodiment, and the bearer identifier may be a sequence number, a field, and the like, and the bearer identifier is, for example, a tunnel endpoint IDentifier (tunnel endpoint IDentifier).
  • the correspondence indicates which bearer data is transmitted on the second base station, and which bearer data is transmitted on the first base station.
  • the core network device is a mobility management entity MME and a serving gateway (SGW), or a network element for implementing the MME and the SGW function.
  • MME mobility management entity
  • SGW serving gateway
  • the first base station reports the correspondence table to the MME, and the MME forwards the received correspondence to the SGW.
  • the second base station detects whether the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station;
  • the second base station If yes, the second base station generates indication information for indicating that the GTP error between the second base station and the serving gateway occurs on at least one bearer on the second base station;
  • the second base station determines, according to the correspondence relationship table, a first bearer identifier corresponding to the bearer where the GTP error occurs.
  • the second base station sends the indication information that carries the first bearer identifier to a core network device.
  • the second base station sends the indication information that carries the first bearer identifier to the SGW by using the S1-U, and the SGW parses the indication information to carry the indication information.
  • the bearer identifier corresponding to the bearer in which the GTP error occurs is parsed, so that the SGW releases all bearers on the second base station according to the first bearer identifier, or the first bearer identifier of the SGW is released and
  • the first bearer identifies the bearer on the second base station corresponding to the UE to avoid releasing the bearer that does not have a GTP error on the second base station.
  • the first base station detects whether the GTP error between the first base station and the serving gateway occurs on at least one bearer on the first base station.
  • the first base station If yes, the first base station generates indication information for indicating that the GTP error between the first base station and the serving gateway occurs on at least one bearer on the first base station;
  • the first base station determines, according to the correspondence table, a second bearer identifier corresponding to the bearer where the GTP error occurs.
  • the first base station sends the indication information that carries the second bearer identifier to a core network device.
  • the first base station sends the indication information that carries the second bearer identifier to the SGW by using the S1-U, and the SGW parses the indication information to carry the indication information.
  • the bearer identifier corresponding to the bearer in which the GTP error occurs is parsed, so that the SGW releases all bearers on the first base station according to the second bearer identifier, or the second bearer identifier of the SGW is released and
  • the second bearer identifies the bearer on the corresponding first base station to avoid releasing the bearer that does not have a GTP error on the first base station.
  • the first base station detects, by the at least one bearer on the first base station, whether a general packet radio system tunneling protocol GTP error between the second base station and the serving gateway occurs.
  • the first base station releases at least one occurrence of the second base station and the service
  • the specific implementation process of the first base station releasing the bearer in which the GTP error occurs is the same as the specific implementation process of the bearer in the second base station that releases the GTP error, and is not described in this embodiment.
  • the first base station generates indication information.
  • the first base station generates indication information according to the GTP error correspondence
  • the first base station sends the indication information to a core network device.
  • the core network device receives the indication information sent by the first base station, and then performs the corresponding bearer handover.
  • the core network device does not need to be specifically switched.
  • the core network device may The bearer that has been released on the first base station is switched to the second base station, or the core network device determines the base station that meets the preset condition, so that the bearer and signal strength on the base station satisfying the preset condition meet the requirement of transmitting data.
  • the core network device can switch the bearer on the first base station to the base station that meets the preset condition.
  • the present embodiment enables the transmission of user data even if a GTP error occurs on the bearer on the first base station, and prevents the core network device from releasing all bearers on the first base station and the second base station due to the GTP error.
  • the terminal can also prevent the terminal from deleting all the configurations corresponding to the bearer on the terminal, effectively reducing the number of control signaling sent by the core network device to re-establish the bearer, and improving the efficiency of data transmission and the user experience.
  • the first base station includes:
  • the first receiving unit 1601 is configured to receive indication information sent by the second base station, where the indication information is used to indicate that at least one bearer on the second base station is a general packet radio system tunneling protocol between the second base station and the serving gateway. GTP is released and released;
  • the first sending unit 1602 is configured to send a radio resource connection reconfiguration message to the terminal, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal.
  • the first base station if the second base station detects that the GTP error between the second base station and the serving gateway is caused by the at least one bearer on the second base station, the first base station is notified by using the indication information.
  • the first base station may determine that at least one bearer on the second base station is released according to the indication information, and the first base station generates a radio resource connection reconfiguration message according to the situation that the bearer is released on the second base station,
  • the terminal is configured to release the corresponding configuration according to the radio resource connection reconfiguration message, so as to prevent the terminal from deleting the configuration of the bearer on the terminal that does not have the GTP error on the first base station, and avoiding the first base station and the terminal. Re-establishing the user context and improving the user experience.
  • the first base station includes:
  • the second receiving unit 1701 is configured to receive a correspondence table sent by the second base station, where the correspondence table includes at least one bearer that is released due to the GTP error between the second base station and the serving gateway. Correspondence with the bearer identifier;
  • the third receiving unit 1702 is configured to receive the bearer identifier sent by the second base station;
  • the first receiving unit 1703 is configured to receive indication information sent by the second base station, where the indication information is used to indicate that at least one bearer on the second base station is a general packet radio system tunneling protocol between the second base station and the serving gateway. GTP is released and released;
  • the first sending unit 1704 is configured to send a radio resource connection reconfiguration message to the terminal, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal.
  • the terminal deletes the configuration that the second target bears on the terminal according to the radio resource connection reconfiguration message.
  • the second base station has released the second target bearer
  • the terminal may delete the second target bearer on the second base station according to the radio resource connection reconfiguration message. Configuration on the terminal.
  • the first base station includes:
  • the first receiving unit 1801 is configured to receive indication information that is sent by the second base station, where the indication information is used to indicate that at least one bearer on the second base station is a general packet radio system tunneling protocol between the second base station and the serving gateway. GTP is released and released;
  • a first sending unit 1802 configured to send a radio resource connection reconfiguration message to the terminal, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal;
  • the second sending unit 1803 is configured to send the first bearer modification indication message to the core network device, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station To the primary cell group bearer on the first base station;
  • the third sending unit 1804 is configured to send a second bearer modification indication message to the core network device, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer Hosting the primary cell group on the first base station;
  • the fourth sending unit 1805 is configured to send a third bearer modification indication message to the core network device, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer It is carried by the secondary cell group on the third base station.
  • a fifth sending unit 1806, configured to send a fourth bearer modification indication message to the core network device, where the fourth bearer modification indication message is used to instruct the core network device to use the first Switching the two target bearers to the primary cell group bearer on the first base station;
  • a sixth sending unit 1807 configured to send a fifth bearer modification indication message to the core network device, where the fifth bearer modification indication message is used to indicate that the core network device releases the second base station
  • the second target bearer is established as a primary cell group bearer on the first base station
  • the seventh sending unit 1808 is configured to send a sixth bearer modification indication message to the core network device, where the sixth bearer modification indication message is used to instruct the core network device to use the first
  • the two target bearers are handed over to the secondary cell group bearers on the third base station.
  • the core network device may perform corresponding path switching to ensure normal transmission of user data, and prevent the core network device from being faulty due to the GTP error. All the bearers on the first base station and the second base station are released, and the terminal can be prevented from deleting all the configurations corresponding to the bearers on the terminal, thereby effectively reducing the number of control signaling sent by the core network device to re-establish the bearer. Improve the efficiency of data transmission and user experience.
  • the second base station includes:
  • the detecting unit 1901 is configured to detect whether the at least one bearer on the second base station is in the first General Packet Radio System Tunneling Protocol GTP error between the two base stations and the serving gateway;
  • a releasing unit 1902 configured to release at least one occurrence of the second base station and the service if at least one bearer on the second base station occurs a general packet radio system tunneling protocol GTP error between the second base station and a serving gateway The GTP error bearer between the gateways;
  • the eighth sending unit 1903 is configured to send the indication information to the first base station, where the indication information is used to indicate that the at least one bearer on the second base station is a general packet radio system tunneling protocol between the second base station and the serving gateway. The GTP error was released.
  • the first base station if the second base station detects that the GTP error between the second base station and the serving gateway is caused by the at least one bearer on the second base station, the first base station is notified by using the indication information, so that The first base station may determine that at least one bearer on the second base station has been released according to the indication information, and the first base station generates a radio resource connection reconfiguration message according to the indication information, so that the terminal according to the wireless
  • the resource connection reconfiguration message is used to release the corresponding configuration, so as to prevent the terminal from deleting the configuration of the bearer on the terminal that does not have the GTP error on the first base station, thereby avoiding reestablishing the user context between the first base station and the terminal.
  • the second base station includes:
  • the ninth sending unit 2001 is configured to send a correspondence table to the first base station, where the correspondence table includes at least one bearer that is released due to the GTP error between the second base station and the serving gateway. Correspondence with the bearer identifier;
  • the tenth sending unit 2002 is configured to send the bearer identifier to the first base station, so that the first base station determines that the GTP error bearer between the second base station and the serving gateway occurs.
  • the detecting unit 2003 is configured to detect, according to at least one bearer on the second base station, whether a general packet radio system tunneling protocol GTP error between the second base station and the serving gateway occurs;
  • a releasing unit 2004, configured to release at least one occurrence of the second base station and the service if at least one bearer on the second base station occurs a general packet radio system tunneling protocol GTP error between the second base station and a serving gateway The GTP error bearer between the gateways;
  • the eighth sending unit 2005 is configured to send the indication information to the first base station, where the indication information is used to indicate that the at least one bearer on the second base station is a general packet radio system tunneling protocol between the second base station and the serving gateway. The GTP error was released.
  • the terminal includes:
  • the fourth receiving unit 2101 is configured to receive a radio resource connection reconfiguration message sent by the first base station, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one bearer on the second base station.
  • the deleting unit 2102 is configured to delete, according to the radio resource connection reconfiguration message, at least one configuration on the second base station that is carried on the terminal.
  • the terminal may delete the configuration of all the bearers on the second base station according to the radio resource connection reconfiguration message, or the terminal may be connected according to the radio resource connection. Deleting a configuration of the GTP error on the second base station to prevent the bearer on the second base station from being erroneous, so that the terminal will be all on the first base station and the second base station The configuration on the terminal is deleted to avoid the terminal connected between the terminal and the base station, thereby ensuring normal data transmission, thereby improving the user experience.
  • the terminal includes:
  • the fourth receiving unit 2201 is configured to receive a radio resource connection reconfiguration message sent by the first base station, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one bearer on the second base station.
  • the deleting unit 2202 is configured to delete, according to the radio resource connection reconfiguration message, at least one configuration that is carried on the terminal by the second base station;
  • the eleventh sending unit 2203 is configured to send data by using a primary cell group bearer on the first base station;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer on the first base station used by the terminal to send data;
  • the twelfth sending unit 2204 is configured to send data by using a secondary cell group bearer on the third base station;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer on a third base station used by the terminal to send data, where the third base station is on the third base station.
  • the bearer and signal strength meet the preset requirements;
  • a thirteenth sending unit 2205 configured to pass the primary cell group bearer on the first base station Said third target bearer transmitting data
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer and a third target bearer on the first base station used by the terminal to send data.
  • the third target bearer is a bearer that does not have the GTP error on the second base station;
  • the fourteenth sending unit 2206 is configured to send data by using the secondary cell group bearer on the third base station and the third target bearer;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer and a third target bearer on the third base station, and bearer and signal strength on the third base station
  • the preset target is met, and the third target bearer is a bearer that does not have the GTP error on the second base station.
  • the core network device includes:
  • the fifth receiving unit 2301 is configured to receive a bearer indication message sent by the first base station, where the bearer indication message is used by the first base station to instruct the core network device to perform bearer switching.
  • the switching unit 2302 is configured to perform corresponding bearer switching according to the bearer indication message.
  • the core network device may perform corresponding path switching to ensure normal transmission of user data, and may prevent the terminal from configuring all configurations corresponding to the bearer on the terminal.
  • the deletion is performed to effectively reduce the number of control signaling sent by the core network device to re-establish the bearer, thereby improving the efficiency of data transmission and the user experience.
  • the core network device includes:
  • the fifth receiving unit 2401 is configured to receive a bearer indication message sent by the first base station, where the bearer indication message is used by the first base station to instruct the core network device to perform bearer switching.
  • the switching unit 2402 is configured to perform corresponding bearer switching according to the bearer indication message.
  • the bearer indication message is a first bearer modification indication message, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station to the first The primary cell group bearer on the base station;
  • the switching unit 2402 is further configured to switch the secondary cell group bearer on the second base station to the The primary cell group bearer on the first base station.
  • the bearer indication message is a second bearer modification indication message, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a primary cell on the first base station.
  • the switching unit 2402 is further configured to establish the released secondary cell group bearer as a primary cell group bearer on the first base station.
  • the bearer indication message is a third bearer modification indication message, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a secondary cell on the third base station.
  • the switching unit 2402 is further configured to establish the released secondary cell group bearer as a secondary cell group bearer on the third base station.
  • the bearer indication message is a fourth bearer modification indication message, where the fourth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the first base station Hosting on the primary cell group;
  • the switching unit 2402 is further configured to switch the second target bearer on the second base station to a primary cell group bearer on the first base station;
  • the bearer indication message is a fifth bearer modification indication message, where the fifth bearer modification indication message is used to indicate that the core network device establishes the second target bearer that has been released on the second base station as the first The primary cell group bearer on a base station;
  • the switching unit 2402 is further configured to establish the second target bearer that has been released on the second base station as a primary cell group bearer on the first base station.
  • the bearer indication message is a sixth bearer modification indication message, where the sixth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the third base station The secondary cell group on the bearer;
  • the switching unit 2402 is further configured to switch the second target bearer on the second base station to a secondary cell group bearer on the third base station.
  • the core network device may perform corresponding path switching to ensure normal transmission of user data, and prevent the core network device from being the first due to the GTP error. All bearers on the base station and the second base station are released, and the terminal is also prevented from ending. All the configurations corresponding to the bearer are deleted, which effectively reduces the number of control signaling sent by the core network device to re-establish the bearer, and improves the efficiency of data transmission and the user experience.
  • An embodiment of the present invention further provides a system for implementing carrier aggregation, where the system includes:
  • the first base station the first base station, as shown in FIG. 18 to FIG. 18, is not described in this embodiment.
  • the second base station is shown in FIG. 19 to FIG. 20, and is not described in this embodiment.
  • the terminal is shown in FIG. 21 to FIG. 22, and is not described in this embodiment.
  • the core network device as shown in FIG. 23 to FIG. 24, is not described in this embodiment.
  • the base station in the embodiment of the present invention is described above from the perspective of a unitized functional entity.
  • the first base station in the embodiment of the present invention is specifically described from the perspective of hardware processing. Referring to FIG. 25, the first embodiment of the present invention is described.
  • Another embodiment of a base station 2500 includes:
  • first base station 2500 is merely an example, and the first base station 2500 may have more or fewer components than those shown in the figures, and two or more components may be combined, or Can have different component configurations.
  • the various components shown in the figures can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • first base station 2500 provided by this embodiment is only an example of a base station, and the first base station according to the embodiment of the present invention may have more or less components than those shown in FIG. 25, and may combine two.
  • the first base station provided in this embodiment is described in detail below.
  • Memory 2501 can be accessed by a central processor 2503, a peripheral interface 2504, etc., which can include a high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices. , flash memory devices, or other volatile solid-state memory devices.
  • a central processor 2503, a peripheral interface 2504, etc. which can include a high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices. , flash memory devices, or other volatile solid-state memory devices.
  • Peripheral interface 2504 that can connect the device's input and output peripherals to the center
  • the RF circuit 2502 is mainly used for establishing communication between the base station and each terminal device connected to the wireless network, that is, the wireless network, and realizing data reception and transmission between the base station and the wireless network. For example, send a control command or the like. Specifically, the RF circuit 2502 receives and transmits an RF signal, which is also referred to as an electromagnetic signal, and the RF circuit 2502 converts the electrical signal into an electromagnetic signal or converts the electromagnetic signal into an electrical signal, and through the electromagnetic signal and communication network and other devices Communicate.
  • an RF signal which is also referred to as an electromagnetic signal
  • the RF circuit 2502 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip
  • the RF circuit may be a WIFI circuit, a Bluetooth circuit, or an infrared circuit, which is not limited herein.
  • the power management chip 2505 is used for power supply and power management of the central processor 2503 and the hardware connected to the peripheral interface.
  • the central processing unit 2503 performs the following operations:
  • Radio resource connection reconfiguration message Sending a radio resource connection reconfiguration message to the terminal, where the radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal.
  • the central processing unit performs the following operations:
  • the correspondence table includes at least one corresponding relationship between a bearer and a bearer identifier that is released due to the GTP error between the second base station and the serving gateway;
  • the central processing unit performs the following operations:
  • the central processing unit performs the following operations:
  • the central processing unit performs the following operations:
  • the central processing unit performs the following operations:
  • the central processing unit performs the following operations:
  • the base station in the embodiment of the present invention is described above from the perspective of a unitized functional entity.
  • the second base station in the embodiment of the present invention is specifically described from the perspective of hardware processing. Please refer to FIG. 26, which is the first embodiment of the present invention.
  • Another embodiment of the second base station 2600 includes:
  • the illustrated second base station 2600 is merely an example, and the second base station 2600 may have more or fewer components than those shown in the figures, and two or more components may be combined, or Can have different component configurations.
  • the various components shown in the figures can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the second base station 2600 provided in this embodiment is only an example of a base station, and the second base station involved in the embodiment of the present invention may have more or less components than those shown in FIG.
  • One or more components or may have different component configurations or settings, each component It can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the second base station provided in this embodiment is described in detail below.
  • Memory 2601 can be accessed by a central processor 2603, a peripheral interface 2604, etc., which can include a high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices. , flash memory devices, or other volatile solid-state memory devices.
  • Peripheral interface 2604 which can connect the input and output peripherals of the device to central processor 2603 and memory 2601.
  • the RF circuit 2602 is mainly used for establishing communication between the base station and each terminal device connected to the wireless network, that is, the wireless network, and realizing data reception and transmission between the base station and the wireless network. For example, send a control command or the like. Specifically, the RF circuit 2602 receives and transmits an RF signal, which is also referred to as an electromagnetic signal, and the RF circuit 2602 converts the electrical signal into an electromagnetic signal or converts the electromagnetic signal into an electrical signal, and through the electromagnetic signal and communication network and other devices Communicate.
  • an RF signal which is also referred to as an electromagnetic signal
  • the RF circuit 2602 can include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip
  • the RF circuit may be a WIFI circuit, a Bluetooth circuit, or an infrared circuit, which is not limited herein.
  • the power management chip 2605 is used for power supply and power management of the central processor 2603 and the hardware connected to the peripheral interface.
  • the central processing unit 2603 performs the following operations:
  • the indication information is used to indicate that at least one bearer on the second base station is released due to a GTP error of a general packet radio system tunneling protocol between the second base station and the serving gateway.
  • the central processing unit performs the following operations:
  • the correspondence table includes at least one corresponding relationship between the bearer and the bearer identifier that is released due to the GTP error between the second base station and the serving gateway;
  • the base station in the embodiment of the present invention is described above from the perspective of the unitized functional entity.
  • the terminal in the embodiment of the present invention is specifically described from the perspective of hardware processing. Referring to FIG. 27, the terminal 2700 in the embodiment of the present invention further An embodiment includes:
  • the illustrated terminal 2700 is merely an example, and the terminal 2700 may have more or fewer components than those shown in the figures, two or more components may be combined, or may have different Component configuration.
  • the various components shown in the figures can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the terminal 2700 provided in this embodiment is only an example of a base station, and the terminal involved in the embodiment of the present invention may have more or less components than those shown in FIG. 27, and may combine two or more.
  • the components may have different component configurations or arrangements, and the various components may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.
  • the terminal provided in this embodiment will be described in detail below.
  • Memory 2701 can be accessed by a central processor 2703, a peripheral interface 2704, etc., which can include a high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices. , flash memory devices, or other volatile solid-state memory devices.
  • a central processor 2703 can include a central processor 2703, a peripheral interface 2704, etc.
  • non-volatile memory such as one or more magnetic disk storage devices. , flash memory devices, or other volatile solid-state memory devices.
  • Peripheral interface 2704 which can connect the input and output peripherals of the device to central processor 2703 and memory 2701.
  • the RF circuit 2702 is mainly used for establishing communication between the base station and each terminal device connected to the wireless network, that is, the wireless network, and realizing data reception and transmission between the base station and the wireless network. For example, send a control command or the like. Specifically, the RF circuit 2702 receives and transmits an RF signal, which is also referred to as an electromagnetic signal, and the RF circuit 2702 converts the electrical signal into an electromagnetic signal or converts the electromagnetic signal into an electrical signal, and through the electromagnetic Signals communicate with communication networks and other devices.
  • an RF signal which is also referred to as an electromagnetic signal
  • the RF circuit 2702 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip
  • the RF circuit may be a WIFI circuit, a Bluetooth circuit, or an infrared circuit, which is not limited herein.
  • the power management chip 2705 is configured to supply power and power management to the central processor 2703 and hardware connected to the peripheral interface.
  • the central processing unit 2703 specifically performs the following operations:
  • Radio resource connection reconfiguration message is used to instruct the terminal to delete at least one configuration on the second base station that is carried on the terminal
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer on the first base station used by the terminal to send data; Do the following:
  • the data is transmitted through the primary cell group bearer on the first base station.
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer on a third base station used by the terminal to send data; and the central processing unit performs the following operations. :
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a primary cell group bearer and a third target bearer on the first base station, where the terminal is used to send data,
  • the third target bearer is a bearer on the second base station where the GTP error does not occur;
  • the radio resource connection reconfiguration message is further used to indicate a first target bearer, where the first target bearer is a secondary cell group bearer and a third target bearer on the third base station, and bearer and signal strength on the third base station And satisfying the preset requirement, the third target bearer is a bearer that does not have the GTP error on the second base station; and the central processing unit performs the following operations:
  • the base station in the embodiment of the present invention is described above from the perspective of a unitized functional entity.
  • the core network device in the embodiment of the present invention is specifically described from the perspective of hardware processing. Please refer to FIG. 28, the core in the embodiment of the present invention.
  • Another embodiment of the network device 2800 includes:
  • the illustrated core network device 2800 is merely an example, and the core network device 2800 may have more or fewer components than those shown in the figures, and two or more components may be combined, or Can have different component configurations.
  • the various components shown in the figures can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the core network device 2800 provided by this embodiment is only an example of a base station, and the core network device according to the embodiment of the present invention may have more or less components than those shown in FIG. One or more components, or may have different component configurations or arrangements, each component being implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the core network device device provided in this embodiment is described in detail below.
  • the memory 2801 may be accessed by a central processor 2803, a peripheral interface 2804, etc., which may include a high speed random access memory, and may also include a non-volatile memory, such as one or more magnetic disk storage devices. , flash memory devices, or other volatile solid-state memory devices.
  • Peripheral interface 2804 which can connect the input and output peripherals of the device to central processor 2803 and memory 2801.
  • the RF circuit 2802 is mainly used for establishing communication between the base station and each core network device device connected to the wireless network, that is, the wireless network, and realizing data reception and transmission between the base station and the wireless network. For example, send a control command or the like. Specifically, the RF circuit 2802 receives and transmits an RF signal, which is also referred to as an electromagnetic signal, and the RF circuit 2802 converts the electrical signal into an electromagnetic signal or converts the electromagnetic signal into an electrical signal, and through the electromagnetic signal and communication network and other devices Communicate.
  • an RF signal which is also referred to as an electromagnetic signal
  • the RF circuit 2802 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip Group, User Identity Module (SIM), etc., the RF circuit can be WIFI
  • the road may also be a Bluetooth circuit or an infrared circuit, which is not limited herein.
  • the power management chip 2805 is used for power supply and power management of the central processor 2803 and the hardware connected to the peripheral interface.
  • the central processing unit 2803 performs the following operations:
  • the bearer indication message is a first bearer modification indication message, where the first bearer modification indication message is used to instruct the core network device to switch the secondary cell group bearer on the second base station to the first base station.
  • the primary cell group carries; the central processor performs the following operations:
  • the bearer indication message is a second bearer modification indication message, where the second bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a primary cell on the first base station.
  • Group bearer the central processor performs the following operations:
  • the released secondary cell group bearer is established as a primary cell group bearer on the first base station.
  • the bearer indication message is a third bearer modification indication message, where the third bearer modification indication message is used to indicate that the core network device establishes the released secondary cell group bearer as a secondary cell on the third base station.
  • Group bearer the central processor performs the following operations:
  • the released secondary cell group bearer is established as a secondary cell group bearer on the third base station.
  • the bearer indication message is a fourth bearer modification indication message, where the fourth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the first base station
  • the primary cell group is carried; the central processor performs the following operations:
  • the bearer indication message is a fifth bearer modification indication message, where the fifth bearer modification indication message is used to indicate that the core network device establishes the second target bearer that has been released on the second base station as the first A primary cell group bearer on a base station; the central processor performs the following operations:
  • the second target bearer that has been released on the second base station is established as a primary cell group bearer on the first base station.
  • the bearer indication message is a sixth bearer modification indication message, where the sixth bearer modification indication message is used to instruct the core network device to switch the second target bearer on the second base station to the third base station
  • the secondary cell group is carried; the central processor performs the following operations:
  • the second target bearer on the second base station is switched to a secondary cell group bearer on the third base station.

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Abstract

L'invention concerne un procédé d'agrégation de porteuses (CA), un équipement associé, et un système. Le procédé CA comprend les étapes suivantes : une première station de base reçoit des informations d'indication transmises par une seconde station de base ; et la première station de base transmet un message de reconfiguration de connexion de ressource radio (RRC) à un terminal, le message de reconfiguration RRC étant utilisé pour commander au terminal de supprimer au moins une configuration portée par le terminal par rapport à la seconde station de base. Dans un mode de réalisation de la présente invention, si une erreur de protocole de tunnellisation de système général de radiocommunication par paquets de (GTP) est portée par la seconde station de base, toutes les porteuses de la première station de base et de la seconde station de base ne sont pas nécessairement libérées, et une seule porteuse avec une erreur GTP de la seconde station de base est libérée, ou une seule porteuse de la seconde station de base est libérée. Cela permet d'éviter une interruption de liaison entre la station de base et le terminal, et de réduire la quantité de données de signalisation de commande dans le processus de libération et de rétablissement d'une porteuse. L'efficacité de transmission de données utilisateur et l'expérience utilisateur sont ainsi améliorées.
PCT/CN2014/087408 2014-09-25 2014-09-25 Procédé d'agrégation de porteuses, équipement associé, et système WO2016045038A1 (fr)

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CN201480033899.5A CN105637934A (zh) 2014-09-25 2014-09-25 一种载波聚合方法、相关设备以及系统

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