WO2015176462A1 - Procédés et dispositifs de traitement pour migration et de migration de supports radio à double connexion - Google Patents

Procédés et dispositifs de traitement pour migration et de migration de supports radio à double connexion Download PDF

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Publication number
WO2015176462A1
WO2015176462A1 PCT/CN2014/087718 CN2014087718W WO2015176462A1 WO 2015176462 A1 WO2015176462 A1 WO 2015176462A1 CN 2014087718 W CN2014087718 W CN 2014087718W WO 2015176462 A1 WO2015176462 A1 WO 2015176462A1
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radio bearer
data radio
base station
bearer identifier
identifier
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PCT/CN2014/087718
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English (en)
Chinese (zh)
Inventor
和峰
杜忠达
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中兴通讯股份有限公司
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Publication of WO2015176462A1 publication Critical patent/WO2015176462A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink

Definitions

  • the present invention relates to the field of communications, and in particular, to a migration processing and migration method and apparatus for a dual connectivity radio bearer.
  • LTE Long Term Evolution
  • LTE Advanced enhanced LTE
  • the user plane data protocol stack of the existing LTE is as shown in FIG. 1 , and the GPRS Tunneling Protocol for the User Plane (GTP-TTP) is used from the core network through the user-level general packet radio service (GPRS) protocol.
  • GTP-TTP GPRS Tunneling Protocol for the User Plane
  • GPRS general packet radio service
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • PHY Physical layer
  • the data transmission link between the network and the UE is a one-to-one dedicated link, so the signal quality of the link and the size of the resources used determine the data transmission performance between the two. If the resources used by the link are limited or the signal quality is poor, the user experience of the UE will decrease. This is a huge challenge that mobile operators are facing now.
  • the network capacity is expanding year by year, it still cannot keep up with the increase in the number of user terminals.
  • IP is short for Internet Protocol
  • UDP/IP is short for User Data Protocol/Internet Protocol.
  • LPN Low Power Nodes
  • next-generation communication networks such as LTE
  • a small cell Small Cell
  • Pico eNB where eNB is short for evolved Node B, eNB may be called evolved Node B
  • LPN low-power nodes
  • the network deployment environment becomes more complicated and brings some problems.
  • the coverage of the LPN cell is relatively small compared to the macro cell (Macro Cell)
  • the capacity is relatively small, and some LPN cells may be easily occupied by the user and cause the load to be too high, thereby affecting the user.
  • Dual Connectivity is one of them.
  • the dual-connected terminal can maintain connection with two network nodes at the same time.
  • the UE maintains connection with the macro cell and the LPN cell at the same time.
  • the network side can control the transmission data of the terminal on the two nodes in real time.
  • the UE moves or other reasons cause the LPN cell to change, another cell can still maintain the connection, and this change does not cause excessive signaling impact.
  • the UE must be securely connected to the network.
  • the access layer (Access Stratum, AS for short) between the radio access network element (such as an eNB) and the user equipment has the same security context.
  • the base station key KeNB is included, according to which the encryption key (KRRCenc) and the integrity protection key (KRRCint) of the AS control plane and the encryption key (KUPenc) of the user plane can be derived.
  • the sender uses the control plane integrity protection key (KRRCint) and the encryption key (KRRCenc), and the specified algorithm to perform integrity protection and encryption on the control plane data, and at the receiving end. Reverse operations (decryption and integrity protection verification) are performed according to the same key and algorithm. Both the user plane data transmission and reception sides use the user plane encryption key (KUPenc) to encrypt and decrypt the user plane data. .
  • the base station key initial KeNB is calculated by the core network and then transmitted to the eNB. In the subsequent process, for example, to prevent the PDCP sequence number from being flipped or the UE switching, the KeNB also updates.
  • the KeNB of the handover target side is still calculated by the core network; but if an X2 handover occurs, the derivative method of the KeNB (or KeNB*) of the handover target side may have two As shown in FIG. 3, one is derived from the KeNB on the switching source side, and the other is derived from the Next Hop (NH) key, where the NH key is derived from the core network. Calculated and sent to the eNB.
  • the service bearer (Service-Gateway, S-GW for short) is divided into two groups, which are respectively passed through the master base station (Master eNB, referred to as The MeNB) and the secondary base station (Secondary SeNB, SeNB for short) establish a connection with the UE, as shown in FIG.
  • the two nodes connected to the UE need to use different security keys to protect the respective connection bearers.
  • the base station key S-KeNB on the SeNB is derived from the base station key KeNB on the MeNB.
  • the SeNB When the KeNB of the MeNB changes, the SeNB is deleted; but when the S-KeNB on the SeNB changes, the connection on the MeNB is unaffected.
  • the scenario in which the S-KeNB changes includes: the S-KeNB caused by the KeNB key change on the MeNB. Change, the S-KeNB key modification initiated by the MeNB, the PDCP COUNT value carried on the SeNB is reversed, or the key change caused by other SeNB reconfigurations.
  • the connection bearer of the UE may be migrated between the MeNB and the SeNB, that is, the bearer on the MeNB may be migrated to the SeNB, and the SeNB shall bear the data transmission and reception;
  • the reverse can occur, ie the bearer on the SeNB is migrated back to the MeNB.
  • the identity of the bearer does not change.
  • the data radio bearer (DRB id) (DRB id) is assigned to the base station side; the Evolved Packet System (EPS) bearer identifier (ESP) is assigned to the core network side. Id), and Enhanced Radio Access Bearer (E-RAB id).
  • the DRB id is one-to-one or mapped with the EPS id and the E-RAB id. If the radio bearer corresponding to a DRB id of the access layer is deleted, the ground bearer corresponding to the EPS id of the non-access stratum needs to be deleted. In the bearer migration process in the dual-connection scenario, the actual change is only related to the change of the user plane path, and the bearer does not change. Therefore, the corresponding radio bearer identifier and the ground bearer identifier and their corresponding relationships do not occur. Variety.
  • the present invention provides a dual-connection radio bearer migration processing, migration method and device, to at least solve the above problem. technical problem.
  • a method for processing a dual-connection radio bearer including: a primary base station assigning a new data radio bearer identifier to a data radio bearer to be migrated, where the new The data radio bearer identifier is different from the data radio bearer identifier used by the master base station and the slave base station; the master base station sends a message to the user equipment to notify the user equipment to perform data radio bearer migration, where the message is Carrying the new radio bearer identity.
  • the new radio bearer identifier has a mapping relationship with the evolved packet system bearer identifier corresponding to the data radio bearer.
  • the method further includes: clearing the current data radio bearer when the master base station and/or the slave base station performs key update Data radio bearer identification record not used.
  • the method further includes: the primary base station migrating the data radio bearer from the primary base station to the secondary base station, and then the secondary base station migrates the data radio bearer The key back to the primary base station, and/or the source base station carrying the migration is updated, and the key of the target base station carrying the migration is not updated.
  • a method for migrating a dual-connected radio bearer including: receiving, by a user equipment, a message from a primary base station for notifying a user equipment to perform data radio bearer migration, where The message carries a new data radio bearer identifier allocated by the primary base station, where the new data radio bearer identifier is used to identify a data radio bearer to be migrated, and the new data radio bearer identifier is associated with the primary base station and The data radio bearer identifiers that have been used by the base station are different; the user equipment migrates the data radio bearers to the target base station according to the new data radio bearer identifier.
  • the method further includes: the user equipment, the new data radio bearer identifier, and the Corresponding to the evolved packet system bearer identifier corresponding to the data radio bearer, and deleting the original data radio bearer identifier of the data radio bearer.
  • a dual-connection radio bearer migration processing apparatus which is applied to a primary base station, and includes: an allocation module, configured to allocate a new data radio bearer to be migrated. a data radio bearer identifier, wherein the new data radio bearer identifier is different from the data radio bearer identifier used by the master base station and the slave base station; and the sending module is configured to send the user equipment to notify the user equipment to perform data
  • the radio carries the migrated message, where the message carries the new radio bearer identifier.
  • the allocating module is further configured to allocate the new data radio bearer identifier when the new radio bearer identifier has a mapping relationship with the evolved packet system bearer identifier corresponding to the data radio bearer.
  • a dual connectivity radio bearer migration apparatus including: a receiving module, configured to receive, from a primary base station, a user equipment for notifying a data radio bearer migration. a message, wherein the message carries a new data radio bearer assigned by the primary base station The new data radio bearer identifier is used to identify the data radio bearer to be migrated, and the new data radio bearer identifier is different from the data radio bearer identifier used by the master base station and the slave base station; And configured to migrate the data radio bearer to the target base station according to the new data radio bearer identifier.
  • the mapping module is further configured to: the new data radio bearer identifier is associated with the evolved packet system bearer identifier corresponding to the data radio bearer, and the original data radio bearer identifier of the data radio bearer is deleted.
  • a base station including the migration processing apparatus of the dual connectivity radio bearer described above.
  • a user equipment including the migration device of the dual connectivity radio bearer described above.
  • the invention solves the problem that the primary base station allocates a new data radio bearer identifier different from the data radio bearer identifier of the primary base station and the data radio bearer identifier that has been used by the base station for the data radio bearer to be migrated, and solves the related art, the dual connection
  • the wireless bearer has problems such as security caused by key leakage during the migration process between the base stations, and improves the security of the dual-connection bearer of the terminal.
  • FIG. 1 is a schematic diagram of an LTE user plane protocol stack according to the related art
  • FIG. 2 is a schematic diagram of a key derivation and protection mechanism in a network of the related art
  • FIG. 3 is a schematic diagram of a method for deriving a base station key in a handover scenario according to the related art
  • FIG. 4 is a schematic diagram of a dual connectivity scenario according to the related art
  • FIG. 5 is a schematic diagram of a dual connectivity key multiplexing scenario according to the related art
  • FIG. 6 is a schematic diagram of an encryption method according to the related art
  • FIG. 7 is a flowchart of a migration processing method of a dual connectivity radio bearer according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a migration processing apparatus for a dual connectivity radio bearer according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of a method for migrating a dual connectivity radio bearer according to an embodiment of the present invention.
  • FIG. 10 is a structural block diagram of a dual connectivity radio bearer migration apparatus according to an embodiment of the present invention.
  • FIG. 11 is a block diagram showing another structure of a dual connectivity radio bearer migration apparatus according to a preferred embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a bearer migration process actively triggered by a primary base station according to a preferred embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a bearer migration process actively triggered from a base station according to a preferred embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a bearer migration process actively triggered from a base station according to a preferred embodiment of the present invention.
  • FIG. 7 is a flowchart of a migration processing method of a dual connectivity radio bearer according to an embodiment of the present invention. As shown in FIG. 7, the method includes steps S702-S706:
  • Step 702 The primary base station allocates a new data radio bearer identifier to the data radio bearer to be migrated, where the new data radio bearer identifier is different from the data radio bearer identifier used by the master base station and the slave base station;
  • Step 704 The primary base station sends a message to the user equipment to notify the user equipment that the data radio bearer is migrated, where the message carries the new radio bearer identifier corresponding to the data radio bearer to be migrated.
  • the foregoing various processing steps may be applied to various migration scenarios of the radio bearer, for example, from the original data radio bearer of the base station to the primary base station; or the original data radio bearer of the primary base station is migrated to the secondary base station; or The data radio bearer of the primary base station is migrated to the secondary base station, and then migrated from the secondary base station to the primary base station.
  • the key information and the like may be repeatedly used, which may lead to key leakage, etc., and the technical means adopting the above various processing steps are adopted as
  • the data radio bearer is allocated with a new data radio bearer identification technology that is different from the primary base station and the radio bearer identifier that has been allocated by the base station. Therefore, the multiplexing of information such as keys is fundamentally avoided, and the dual connectivity bearer is improved. Security when hosting migrations.
  • the primary base station allocates a new data radio bearer identifier to the data radio bearer, and no longer uses the original data radio bearer identifier. Therefore, after receiving the message, the user equipment needs to re-use the new one.
  • the data radio bearer identifier corresponds to the evolved packet system bearer identifier corresponding to the data radio bearer, and does not trigger the deletion indication of the upper layer radio bearer.
  • the notification message is implemented in multiple manners, for example, by using a new dedicated message, or by using an existing message.
  • the primary base station can record the data radio bearer identity that the primary base station and the secondary base station have used.
  • the record information may be updated by the key update process to clear the bearer identification record that is not used by the current radio bearer. For example, when the primary base station and/or the base station passively or actively perform key update, the current data radio bearer is not used.
  • the data radio bearer identification record (that is, the data radio bearer identification record that is not used by the current radio bearer). Specifically, it can be expressed as the following implementation forms:
  • the primary base station When the key update is initiated, the primary base station clears the data radio bearer identification record that is not used by the current bearer; when there is no new data radio bearer identifier, the primary base station and the secondary base station can also use the key update process to clear unused data wireless.
  • the identity record is carried to retrieve the radio bearer identity resource.
  • the method for clearing the bearer identifier is as follows: if the used radio bearer identifier of the used data recorded by the primary base station is 1, 2, 3, but there are only two data radio bearers on the current primary base station and the secondary base station, respectively, the identifier 2 is used. And 3, through the key update process, you can clear the record of ID 1 that is no longer used.
  • the solution in this embodiment may be applied to the following scenarios, but is not limited thereto: the primary base station migrates the data radio bearer from the primary base station to the secondary base station, and then the secondary base station migrates the data radio bearer back to the primary base station, and/or
  • the key of the source base station carrying the migration is updated and the key of the target base station carrying the migration is not updated.
  • the source/target base station carrying the migration is for the data radio bearer to be migrated. For example, if a data radio bearer is migrated from the A base station to the B base station, the A base station is the source base station for the bearer migration, and the B base station is the target base station carrying the migration.
  • a dual-connection radio bearer migration processing apparatus is also provided, which is applied to a primary base station, and is used to implement the foregoing method. As shown in FIG. 8, the apparatus includes:
  • the allocating module 80 is configured to allocate a new data radio bearer identifier to the data radio bearer to be migrated, where the new data radio bearer identifier is different from the data radio bearer identifier used by the master base station and the slave base station;
  • the sending module 82 is connected to the distribution module 80, and is configured to send a message to the user equipment to notify the user equipment to perform data radio bearer migration, where the message carries the new radio bearer identifier.
  • the foregoing allocation module 80 is further configured to allocate the new data radio bearer identifier when the new radio bearer identifier has a mapping relationship with the evolved packet system bearer identifier corresponding to the data radio bearer.
  • each of the above modules may be implemented by software or a hardware module.
  • the distribution module 80 is located in the first processor, and the sending module 82 may be located in the second processor.
  • the allocation module 80 and the transmitting module 82 are all located in the same processor, but are not limited thereto.
  • a base station including: the migration processing apparatus of the dual connectivity radio bearer described above.
  • a method for migrating a dual connectivity radio bearer includes:
  • Step S902 The user equipment receives a message from the primary base station for informing the user equipment to perform data radio bearer migration, where the message carries a new data radio bearer identifier allocated by the primary base station, where the new data radio bearer identifier is used to identify The data radio bearer to be migrated, the new data radio bearer identifier is different from the data radio bearer identifier used by the primary base station and the slave base station;
  • Step S904 The user equipment migrates the data radio bearer to the target base station according to the new data radio bearer identifier.
  • the user equipment when the user equipment migrates the data radio bearer to the target base station according to the new data radio bearer identifier, the user equipment needs to make the new data radio bearer identifier of the data radio bearer and the data.
  • the evolved packet system bearer identifier corresponding to the radio bearer is corresponding, and the original data radio bearer identifier of the data radio bearer is deleted. In this process, deleting the original data radio bearer identifier of the data radio bearer does not trigger the deletion of the evolved packet system bearer corresponding to the data radio bearer and its identifier.
  • a dual-connected radio bearer migrating device is also provided.
  • the device is used to implement the foregoing solution, and can be applied to a user equipment. As shown in FIG. 10, the device includes:
  • the receiving module 102 is configured to receive a message from the primary base station for notifying the user equipment to perform data radio bearer migration, where the message carries a new data radio bearer identifier allocated by the primary base station, where the new data radio bearer identifier is used for Identifying the data radio bearer to be migrated, where the new data radio bearer identifier is different from the data radio bearer identifier used by the primary base station and the slave base station;
  • the migration module 104 is configured to migrate the data radio bearer to the target base station according to the new data radio bearer identifier.
  • the foregoing apparatus may further include: a mapping module 106, configured to establish a mapping relationship between a new data radio bearer identifier and an evolved packet system bearer identifier corresponding to the data radio bearer, and delete the original data radio bearer The mapping relationship between the data radio bearer identifier and the evolved packet system bearer identifier.
  • a mapping module 106 configured to establish a mapping relationship between a new data radio bearer identifier and an evolved packet system bearer identifier corresponding to the data radio bearer, and delete the original data radio bearer The mapping relationship between the data radio bearer identifier and the evolved packet system bearer identifier.
  • a user equipment including: the migration device of the dual connectivity radio bearer described above.
  • the following preferred embodiment provides a method for managing a dual-connection radio bearer, so that when the connection bearer of the terminal is migrated between the base stations that are simultaneously connected, the problem of key multiplexing and the like is avoided, thereby ensuring the security of the dual connection.
  • the main idea of the following embodiment is:
  • the radio bearer When the radio bearer is migrated from the first base station (which may be the primary base station or the secondary base station) to the second base station (which may be the primary base station or the secondary base station), it needs to be assigned a new data radio bearer identifier and the radio bearer with the data
  • the corresponding evolved packet system bearer identity re-corresponds to the new radio bearer identity.
  • the new radio bearer identifier is to be distinguished from other bearer identifiers that have been allocated on the first base station and the second base station. Further, when the key update is initiated, the first base station and/or the second base station clears the bearer identifier that is not used by the current bearer.
  • the first base station and the second base station may also use the key update procedure to clear the unused bearer identity record to regain the radio bearer identity resource.
  • the “first” and “second” described in the above embodiments are only used to distinguish the information or entity involved, and do not constitute an improper definition of the information or entity involved.
  • the UE maintains dual connectivity with the primary base station (ie, MeNB) and the secondary base station (ie, SeNB), wherein the MeNB wishes to migrate the A bearer (whose data radio identifier is 1) on the base station to the SeNB.
  • MeNB primary base station
  • SeNB secondary base station
  • step S1202 the MeNB initiates a modification request to the SeNB, which carries the A bearer configuration information to be migrated, including the new data radio bearer identifier allocated thereto, and assumes that the new data radio bearer identifier is 2.
  • the MeNB needs to ensure that the data radio bearer identifier 2 has not been used.
  • Step S1204 The SeNB generates a modification request response message according to the MeNB indication.
  • Step S1206 The MeNB initiates a reconfiguration command to the UE according to the modification request response message, where the UE is instructed to migrate the A bearer to the SeNB, and a new data radio bearer identifier 2 is allocated thereto.
  • Step S1208 The UE establishes a connection with the SeNB according to the command message of the MeNB, and completes the migration of the A bearer, and the UE changes the mapping relationship between the radio bearer corresponding to the A bearer and the EPS bearer, and deletes the data radio bearer. After identifying 1, the data radio bearer identifier 2 is re-mapped with the EPS bearer identifier of the bearer. The UE then initiates a flush configuration complete message to the MeNB.
  • step S1210 the MeNB sends a modification complete message to the SeNB to notify the completion of the migration.
  • the MeNB can also use the foregoing process to complete the migration of multiple data radio bearers at the same time.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the UE maintains dual connectivity with the primary base station (ie, the MeNB) and the secondary base station (ie, the SeNB), wherein the B bearers on the SeNB are previously migrated by the MeNB, and the keys on the MeNB and the SeNB are KeNB1 and S, respectively.
  • the B bearers on the SeNB are previously migrated by the MeNB, and the keys on the MeNB and the SeNB are KeNB1 and S, respectively.
  • - KeNB1 B carries the PDCP COUNT count value in the transmission process on the SeNB, and the key change on the SeNB becomes S-KeNB2.
  • the SeNB wishes to re-migrate the B-bearer (the data radio identifier of the base station) on the base station to the MeNB.
  • Step S1302 The SeNB sends a modification request message to the MeNB, where the B bearer configuration information that needs to be migrated is carried.
  • step S1304 the MeNB generates a reconfiguration command to the UE according to the bearer migration request message, where the new configuration information carried by the B on the MeNB is carried, including the data radio bearer identifier (set to 2) that the MeNB reassigns for the B bearer.
  • the MeNB needs to ensure that the new radio bearer identifier 2 is different from the data radio bearer identifier that the MeNB and the SeNB have used.
  • Step S1306 The UE completes the migration of the B bearer to the MeNB according to the command message of the MeNB, and the UE changes the mapping relationship between the radio bearer corresponding to the B bearer and the EPS bearer, deletes the radio bearer identifier 1, and re-enables the radio bearer identifier 2 and the bearer.
  • the EPS bearer identity establishes a mapping. The UE then initiates a reconfiguration complete message to the MeNB.
  • step S1308 the MeNB sends a modification confirmation message to the SeNB to notify the completion of the migration.
  • the MeNB may actively determine whether the key carried by the B bearer on the SeNB is updated, if the key S-KeNB1 on the SeNB does update, and the local key and the original MeNB migrate the B bearer to the SeNB. If the key KeNB1 is the same, the MeNB may choose not to allocate a new radio bearer identifier for the B bearer.
  • the MeNB and the SeNB can also use the process to simultaneously perform migration of multiple data radio bearers.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the UE maintains dual connectivity with the primary base station (ie, MeNB) and the secondary base station (ie, SeNB,), wherein the SeNB wishes to exit the upper connection (ie, is deleted) due to load or other reasons, and the SeNB base station All data radio bearers (whose data radio identifier is 1) are migrated to the MeNB.
  • MeNB primary base station
  • SeNB secondary base station
  • All data radio bearers whose data radio identifier is 1
  • Step S1402 The SeNB sends a release request message to the MeNB, where all data radio bearer configuration information that needs to be migrated is carried.
  • Step S1404 The MeNB generates a reconfiguration command initiated by the UE, where the new configuration information of all or part of the data radio bearers on the MeNB is carried, including the data radio bearer identifier re-allocated by the MeNB for all or part of the data radio bearers on the SeNB. .
  • the MeNB needs to ensure that the newly allocated data radio bearer identifier is different from the data radio bearer identifier used by the MeNB and the SeNB.
  • Step S1406 The UE completes the migration of the responding data radio bearer to the MeNB according to the command message of the MeNB, and deletes the radio connection with the SeNB. At the same time, the UE changes the mapping relationship between the radio bearer corresponding to the B bearer and the EPS bearer, and establishes a mapping between the newly allocated data radio bearer identifier and the EPS bearer identifier of the corresponding bearer. The UE then initiates a reconfiguration complete message to the MeNB.
  • step S1408 the MeNB sends a release confirmation message to the SeNB.
  • step 1404 if the MeNB determines that no redundant radio bearer identifier can be allocated at present, the MeNB needs to initiate a key update procedure of the MeNB.
  • the update process is the same as the existing key update process, and is not described here.
  • the embodiment of the present invention achieves the following beneficial effects: the foregoing technical solution provided by the embodiment of the present invention can ensure sufficient security protection for the multi-connection bearer of the terminal, and can prevent the service connection at the terminal from being carried. When a migration occurs between base stations, it poses a hidden danger in key security. At the same time, the management method in the present invention fully multiplexes the existing connection management mechanism, and ensures the backward compatibility of the network and the terminal on the software and hardware to a certain extent.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, thereby Storing them in a storage device is performed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that herein, or separately fabricated into individual integrated circuit modules, or Multiple of these modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the primary base station is configured to allocate a new data radio bearer identifier different from the data radio bearer of the primary base station and the data radio bearer identifier used by the base station for the data radio bearer to be migrated.
  • the dual-connection radio bearer has the problem of security caused by key leakage during the migration process between the base stations, and the security of the dual-connection bearer of the terminal is improved.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne des procédés et des dispositifs de traitement pour migration et de migration de supports radio à double connexion. Le procédé de traitement pour migration comporte les étapes suivantes: une station de base maîtresse attribue un nouvel identifiant de support radio de données à un support radio de données à migrer, le nouvel identifiant de support radio de données étant différent d'identifiants de supports radio de données qui ont été utilisés par la station de base maîtresse et d'identifiants de supports radio de données qui ont été utilisés par une station de base esclave; et la station de base maîtresse envoie à un équipement d'utilisateur un message servant à informer l'équipement d'utilisateur qu'il convient de migrer le support radio de données, le message transportant le nouvel identifiant de support radio. Au moyen de la solution technique décrite dans la présente invention, le problème rencontré dans l'état de la technique apparentée, où la sécurité est faible en raison de l'exposition des clés au cours de la migration d'un support radio à double connexion entre stations de base, est résolu et la sécurité du support à double connexion d'un terminal est améliorée.
PCT/CN2014/087718 2014-05-23 2014-09-28 Procédés et dispositifs de traitement pour migration et de migration de supports radio à double connexion WO2015176462A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410223153.2 2014-05-23
CN201410223153.2A CN104219722B (zh) 2014-05-23 2014-05-23 双连接无线承载的迁移处理、迁移方法及装置

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