WO2014166093A1 - Procédé de traitement d'une erreur de liaison et de configuration, équipement d'utilisateur, et station de base - Google Patents

Procédé de traitement d'une erreur de liaison et de configuration, équipement d'utilisateur, et station de base Download PDF

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Publication number
WO2014166093A1
WO2014166093A1 PCT/CN2013/074090 CN2013074090W WO2014166093A1 WO 2014166093 A1 WO2014166093 A1 WO 2014166093A1 CN 2013074090 W CN2013074090 W CN 2013074090W WO 2014166093 A1 WO2014166093 A1 WO 2014166093A1
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WIPO (PCT)
Prior art keywords
path
user equipment
base station
message
dual
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Ceased
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PCT/CN2013/074090
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English (en)
Chinese (zh)
Inventor
鲁艳玲
常宁娟
徐海博
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Fujitsu Ltd
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Fujitsu Ltd
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Priority to PCT/CN2013/074090 priority Critical patent/WO2014166093A1/fr
Publication of WO2014166093A1 publication Critical patent/WO2014166093A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/123—Applying verification of the received information received data contents, e.g. message integrity

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for processing link and configuration errors, a user equipment, and a base station.
  • Background Art In an LTE-A system, when a user equipment detects some serious error and cannot communicate again, the user equipment needs to initiate a connection re-establishment process. Through the re-establishment process, the connection between the user equipment and the network side is restored, the security function is reactivated, and the primary cell can also be configured. During the re-establishment process, there is a phase in the communication between the user equipment and the network side that can only send signaling that is not protected by the security mechanism. After the completion of the reconstruction process, only the signaling transmissions that are partially protected by the security mechanism are restored. The data transmission and a part of the signaling transmission protected by the security mechanism require other processes to be configured to be recovered.
  • the reconstruction process is performed by the Radio Resource Control (RRC) layer.
  • RRC Radio Resource Control
  • the user equipment must and only initiate the re-establishment process after the security function of the access layer is started.
  • the rebuild process can be initiated when one of the following five conditions is met: (1) a radio link failure is detected; (2) a handover failure; (3) an E-UTRA (Evolved Universal Terrestrial Radio) (Access) fails; (4) The integrity detection failure indication is obtained from the bottom layer; (5) The RRC connection reconfiguration fails.
  • a macro cell (Macro Cell) is mainly deployed.
  • small cells for example, a micro cell Micro Cell or a Pico Cell, a femto cell Femto Cell, a remote radio head RRH, etc.
  • the coverage area of small cells is relatively small, but the number is relatively large.
  • the inventors have found that if the deployment of small cells is simply increased, the number of handovers can be significantly increased when the terminal moves in a place where dense small cells are deployed. This will increase the control signaling burden. Especially for some high-speed users, the dropped call rate will increase significantly, which will seriously affect the user experience.
  • Non-Patent Document 1 3GPP TS 36.331 VI 1.3.0 (2013-03) Radio Resource Control (C) specification. ( elease 11)
  • Non-Patent Document 2 3GPP TS 36.321 VI 1.2.0 (2013-03). Medium Access Control (MAC) protocol specification . (Release 11) Summary of the Invention
  • the embodiments of the present invention provide a link and configuration error processing method, a user equipment, and a base station, which are used to enhance the trigger mechanism for establishing a connection, improve communication reliability, and ensure user experience.
  • a link and configuration error processing method is provided, which is applied to a communication system in which a dual path exists between a user equipment and a network side, where the dual path includes the first path and the function is weaker than The second path of the first path, the method includes:
  • the user equipment does not initiate a connection re-establishment process when the configuration of the second path fails, or when an integrity detection failure indication of the packet data convergence protocol layer in the second path is received.
  • a user equipment is provided, and a dual path exists between the user equipment and a network side, where the dual path includes a first path and a second path that is weaker than the first path
  • the user equipment includes:
  • a link and configuration error processing method is provided, which is applied to a communication system in which a dual path exists between a user equipment and a network side, where the dual path includes a first path and a weak function In the second path of the first path, the method includes:
  • a link and configuration error processing method is provided, which is applied to a communication system in which a dual path exists between a user equipment and a network side, where the dual path includes a first path and a weak function In the second path of the first path, the method includes:
  • a link and configuration error processing method is provided, which is applied to a communication system in which a dual path exists between a user equipment and a network side, where the dual path includes a first path and a weak function In the second path of the first path, the method includes:
  • the base station sends a reestablishment message through the downlink of the first path, so that the user equipment reconstructs the second path according to the reestablishment message.
  • a base station for use in a communication system in which a dual path exists between a user equipment and a network side, the dual path including a first path and a function weaker than the first path
  • the base station includes:
  • a notification receiving unit configured to receive a notification message sent by the user equipment by using an uplink of the first path, where the notification message is used to notify the base station that the second path has been released.
  • a base station for use in a communication system in which a dual path exists between a user equipment and a network side, the dual path including a first path and a function weaker than the first path
  • the base station includes:
  • a report receiving unit configured to receive a report message sent by the user equipment by using an uplink of the first path, where the report message is used to report to the base station that an error occurs in the second path;
  • the message sending unit sends a release message through the downlink of the first path, so that the user equipment releases the second path according to the release message.
  • a base station for use in a communication system in which a dual path exists between a user equipment and a network side, the dual path including a first path and a function weaker than the first path
  • the base station includes:
  • the message sending unit sends a reconstruction message through the downlink of the first path, so that the user equipment reconstructs the second path according to the reconstruction message.
  • a communication system comprising a user equipment as described above; or the communication system comprising a user equipment and a base station as described above.
  • a computer readable program wherein when the program is executed in a user device, the program causes a computer to perform link and configuration as described above in the user device The wrong way to deal with it.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a link and configuration error processing method as described above in a user equipment.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform a link and configuration error as described above in the base station Approach.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a link and configuration error processing method as described above in a base station.
  • the beneficial effects of the embodiment of the present invention are that, by enhancing the connection establishment triggering mechanism, communication between the user equipment and the network can be ensured not to be unnecessarily interrupted, the reliability of the communication is improved, and the user experience is ensured.
  • 1 is a schematic structural diagram of a control plane protocol stack on an uplink user equipment side
  • FIG. 2 is a schematic structural diagram of a control plane protocol stack on a downlink base station side
  • FIG. 3 is a schematic structural diagram of a user plane protocol stack on an uplink user equipment side
  • FIG. 4 is a schematic structural diagram of a user plane protocol stack on a downlink base station side
  • FIG. 5 is a schematic flowchart of a processing method according to Embodiment 1 of the present invention.
  • FIG. 6 is another flowchart of a processing method according to Embodiment 1 of the present invention.
  • Figure 7 is another flow chart of the processing method of Embodiment 1 of the present invention.
  • FIG. 9 is a schematic structural diagram of a user equipment according to Embodiment 2 of the present invention.
  • FIG. 10 is a schematic diagram of another configuration of a user equipment according to Embodiment 2 of the present invention.
  • FIG. 11 is another schematic structural diagram of a user equipment according to Embodiment 2 of the present invention.
  • FIG. 12 is a schematic diagram of another configuration of a user equipment according to Embodiment 2 of the present invention.
  • Figure 13 is a flowchart of a processing method of Embodiment 3 of the present invention.
  • Figure 14 is another flow chart of the processing method of Embodiment 3 of the present invention.
  • FIG. 15 is another flowchart of the processing method of Embodiment 3 of the present invention.
  • Figure 16 is a block diagram showing the structure of a base station according to Embodiment 4 of the present invention.
  • Figure 17 is a block diagram showing another structure of a base station according to Embodiment 4 of the present invention.
  • 18 is a schematic diagram of another configuration of a base station according to Embodiment 4 of the present invention.
  • Figure 19 is a block diagram showing the configuration of a communication system according to a fourth embodiment of the present invention.
  • a dual connectivity (Dual Connectivity) structure In the standard organization, in order to solve the problems existing in the coexistence of macro cells and small cells, a dual connectivity (Dual Connectivity) structure is proposed.
  • a user equipment or terminal
  • one path is between the user equipment and the macro cell base station, and the other is between the user equipment and the small cell base station, which may be referred to herein as a first path (e.g., a macro path) and a second path (e.g., a small path).
  • the macro channel has more powerful functions than the small path, and can have more control functions.
  • the radio resource control function of the control plane may exist only in the macro path, or the radio resource control function in the macro path has a part of the radio resource control function of the small path in addition to controlling the macro path; or carrying more channels, for example
  • the macro path can carry a broadcast channel, a paging channel, etc.; or carry more types of radio bearers.
  • the macro path can carry a signal radio bearer and a data radio bearer. On the small path, only the data radio bearer can be carried.
  • the first path of the present invention is not limited to being between the user equipment and the macro cell base station, and the second path is not limited to being between the user equipment and the small cell base station.
  • the first path may also exist between the user equipment and the small cell base station, and the second path may exist between the user equipment and the macro cell base station; in this scenario, the first between the user equipment and the small cell base station
  • the function of the path may be stronger than the function of the second path between the user equipment and the macro cell base station.
  • the present invention is not limited thereto, and the present invention will be described in detail below by taking the first path between the user equipment and the macro cell base station and the second path between the user equipment and the small cell base station as an example.
  • there may be more than two paths between the user equipment and the network such as three or four. Among these paths, one path is the first path and the remaining paths are the second path.
  • the invention is equally applicable to the case of two or more channels.
  • the protocol stack structure of the air interface has various options. The following is an example of a protocol stack structure with a separate Packet Data Converge Protocol (PDCP) layer in the two paths.
  • PDCP Packet Data Converge Protocol
  • Control Plane For the uplink of the air interface, the transmitter is at the user equipment.
  • FIG. 1 is a schematic structural diagram of a control plane protocol stack on the uplink user equipment side, showing a case of being separated from the PDCP layer.
  • Fig. 2 is a schematic diagram showing the structure of a control plane protocol stack on the downlink base station side, showing the case of being separated from the PDCP layer.
  • PDCP layer As shown in Fig. 2, there are distributed PDCP layer, RLC layer, MAC layer and PHY layer in both paths in the macro base station and the small base station.
  • RLC layer As shown in Fig. 2, there are distributed PDCP layer, RLC layer, MAC layer and PHY layer in both paths in the macro base station and the small base station.
  • RRC layer in the macro base station for controlling the other layers in the two paths.
  • FIG. 3 is a schematic structural diagram of a user plane protocol stack on the uplink user equipment side, showing a case of being separated from the PDCP layer. As shown in Figure 3, there are distributed PDCP layers, RLC layers, MAC layers, and PHY layers in both paths.
  • FIG. 4 is a block diagram showing the structure of the user plane protocol stack on the downlink base station side, showing the case of being separated from the PDCP layer. As shown in FIG. 4, there are distributed PDCP layers, RLC layers, MAC layers, and PHY layers in both paths in the macro base station and the small base station.
  • the two-pass structure has new problems. For example, in the existing protocol, if the integrity check of the PDCP layer fails, the user equipment performs connection reestablishment. In the dual-path structure, each PDCP layer is in each path, and the failure detection of each path will cause the connection reconstruction of the user equipment. In fact, if the second path is relatively simple, even if the integrity detection fails, the second path needs to stop communication, but the first path is still normal, and the user equipment can still communicate through the first path. Therefore, if only the integrity detection failure of the second path occurs, the user's connection reconstruction is unnecessary and needs to be avoided.
  • Example 1 The embodiment of the invention provides a method for processing link and configuration errors, which is applied to a communication system in which a dual path exists between a user equipment and a network side. This embodiment will be described from the user equipment side.
  • the dual path includes a first path and a second path, and the function of the second path is weaker than the function of the first path.
  • FIG. 5 is a schematic flowchart of a processing method according to an embodiment of the present invention. As shown in FIG. 5, the method includes: Step 501: When a configuration of a second path fails, or when a packet data convergence protocol layer in a second path is received When the integrity check fails, the user equipment does not initiate a connection re-establishment process.
  • the configuration failure of the second path may include a resource configuration failure or the like.
  • the PDCP layer when receiving the integrity detection failure indication of the PDCP layer in the second path, does not initiate the connection re-establishment process.
  • connection establishment trigger mechanism it is ensured that the communication between the user equipment and the network is not interrupted unnecessarily, the reliability of the communication is improved, and the user experience is ensured.
  • the second path may be further processed.
  • FIG. 6 is another flowchart of the processing method of the embodiment of the present invention.
  • the processing method includes: Step 601, when the configuration of the second path fails, or when the packet data convergence in the second path is received When the integrity check of the protocol layer fails, the user equipment does not initiate the connection re-establishment process.
  • Step 602 The user equipment releases the second path.
  • Step 603 The user equipment notifies the base station that the second path has been released through the uplink of the first path.
  • the user equipment may release the second path by itself and then notify the base station that the second path has been released.
  • the process of releasing the second path may include: stopping all of the timers in the second path, and releasing all of the radio resources corresponding to the second path.
  • the method may include releasing a MAC entity in the second path, an RLC entity, a PDCP entity, and the like corresponding to all established radio bearers.
  • FIG. 7 is another flowchart of a processing method according to an embodiment of the present invention. As shown in FIG. 7, the processing method includes: Step 701: When the configuration of the second path fails, or when the integrity detection failure indication of the packet data convergence protocol layer in the second path is received, the user equipment does not initiate a connection re-establishment process.
  • Step 702 The user equipment reports an error of the second path to the base station by using the uplink of the first path.
  • Step 703 The user equipment receives a release message sent by the base station by using the downlink of the first path.
  • Step 704 The user equipment is released according to the The message releases the second path.
  • the user equipment may first report to the base station that an error has occurred in the second path through the uplink of the first path. Then, the base station can notify the user equipment to release the second path through the downlink of the first path. After receiving the message sent by the base station to release the second path, the user equipment releases the second path.
  • the process of releasing the second path (e.g., the small path) may include: stopping all of the timers in the second path, and releasing all of the radio resources corresponding to the second path.
  • the method may include releasing a MAC entity in the second path, an RLC entity, a PDCP entity, and the like corresponding to all established radio bearers.
  • FIG. 8 is another flowchart of the processing method of the embodiment of the present invention. As shown in FIG. 8, the processing method includes: Step 801, when the configuration of the second path fails, or when the packet data convergence in the second path is received When the integrity check of the protocol layer fails, the user equipment does not initiate the connection re-establishment process.
  • Step 802 The user equipment requests the base station to reestablish the second path by using the uplink of the first path.
  • Step 804 the user equipment reconstructs according to the reestablishment message. The second path.
  • the user equipment may request to reconstruct the second path through the uplink of the first path, that is, implicitly report to the base station that the second path has an error. Then, the base station can notify the user equipment to reestablish the second path through the downlink of the first path. The user equipment reconstructs the second path based on the received message.
  • the process of reestablishing the second path may include: the user equipment suspends all radio bearers belonging to the second path, configures the bottom layer of the second path as a default configuration, and releases other configurations; and then the user equipment selects a more suitable one.
  • the user equipment can always communicate with the network side through the first path.
  • the embodiment of the present invention further provides a user equipment, which corresponds to the link and configuration error processing method described in Embodiment 1.
  • a user equipment which corresponds to the link and configuration error processing method described in Embodiment 1.
  • FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 900 includes: a processing unit 901.
  • Other parts of the user equipment 900 can refer to the prior art, and details are not described herein again.
  • the processing unit 901 does not initiate the connection re-establishment process when the configuration of the second path fails or when the integrity detection failure indication of the packet data convergence protocol layer in the second path is received.
  • FIG. 10 is another schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 1000 includes: a processing unit 901, as described above.
  • the user equipment 1000 may further include: a releasing unit 1002 and a notifying unit 1003.
  • the release unit 1002 releases the second path; the notifying unit 1003 notifies the base station that the second path has been released through the uplink of the first path.
  • FIG. 11 is another schematic diagram of the configuration of the user equipment according to the embodiment of the present invention.
  • the user equipment 1100 includes: a processing unit 901, as described above.
  • the user equipment 1100 may further include: a reporting unit 1102, a first receiving unit 1103, and a releasing unit 1104.
  • the reporting unit 1102 reports an error of the second path to the base station through the uplink of the first path; the first receiving unit 1103 receives the release message sent by the base station through the downlink of the first path; and the release unit 1104 releases the first message according to the release message.
  • FIG. 12 is another schematic diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 12, the user equipment is shown in FIG.
  • 1200 includes: processing unit 901, as described above.
  • the user equipment 1200 may further include: a requesting unit 1202, a second receiving unit 1203, and a reconstructing unit 1204.
  • the requesting unit 1202 requests the base station to reconstruct the second path by using the uplink of the first path;
  • the second receiving unit 1203 receives the re-establishment message sent by the base station through the downlink of the first path;
  • the reconstruction unit 1204 reconstructs according to the reconstruction message.
  • the second passage The second passage.
  • the enhancement of the connection establishment triggering mechanism can ensure that the communication between the user equipment and the network is not interrupted unnecessarily, improving the reliability of the communication and ensuring the user experience.
  • the user equipment can be guaranteed to recover from the link and configuration errors.
  • reconstructing the second path on the basis of ensuring continuity of communication between the user equipment and the network, In order to restore the second path, thereby increasing the communication speed of the user equipment.
  • Embodiments of the present invention provide a method for processing link and configuration errors, which is applied to a communication system in which a dual path exists between a user equipment and a network side.
  • This embodiment will be described from the base station side, and the same portions as those of the first embodiment will not be described again.
  • the dual path includes a first path and a second path, and the function of the second path is weaker than the function of the first path.
  • FIG. 13 is a schematic flowchart of a processing method according to an embodiment of the present invention. As shown in FIG. 13, the method includes: Step 1301: A base station receives a notification message sent by a user equipment by using an uplink of a first path, where the notification message is used. Notify the base station that the second path has been released.
  • FIG. 14 is another schematic flowchart of a processing method according to an embodiment of the present invention. As shown in FIG. 14, the method includes: Step 1401: A base station receives a report message sent by a user equipment by using an uplink of a first path, where the report message is used by the base station. Reporting an error in the second path to the base station;
  • Step 1402 The base station sends a release message through the downlink of the first path, so that the user equipment releases the second path according to the release message.
  • FIG. 15 is another schematic flowchart of a processing method according to an embodiment of the present invention. As shown in FIG. 14, the method includes: Step 1501: A base station receives a request message sent by a user equipment by using an uplink of a first path, where the request message is used. Requesting to reconstruct a second path from the base station;
  • Step 1502 The base station sends a reestablishment message by using a downlink of the first path, so that the user equipment re-establishes the second path according to the re-establishment message.
  • the enhancement of the connection establishment triggering mechanism can ensure that the communication between the user equipment and the network is not interrupted unnecessarily, improving the reliability of the communication and ensuring the user experience.
  • the user equipment can be guaranteed to recover from the link and configuration errors.
  • the second path can be restored, thereby improving the communication speed of the user equipment.
  • the embodiment of the present invention further provides a base station, which corresponds to the link and configuration error processing method described in Embodiment 3.
  • a base station which corresponds to the link and configuration error processing method described in Embodiment 3.
  • the dual path includes the first path and the function is weaker than the first The second path of a pathway.
  • FIG. 16 is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • the base station 1600 includes: a notification receiving unit 1601.
  • Other parts of the base station 1600 can refer to the prior art, and details are not described herein again.
  • the notification receiving unit 1601 receives the notification message sent by the user equipment through the uplink of the first path, and the notification message is used to notify the base station that the second path has been released.
  • FIG. 17 is a schematic diagram of another structure of a base station according to an embodiment of the present invention.
  • the base station 1700 includes: a report receiving unit 1701 and a message sending unit 1702.
  • Other parts of the base station 1700 can refer to the prior art.
  • the report receiving unit 1701 receives a report message sent by the user equipment through the uplink of the first path, where the report message is used to report to the base station that an error occurs in the second path; and the message sending unit 1702 releases the downlink through the first path.
  • the message causes the user equipment to release the second path according to the release message.
  • FIG. 18 is another schematic diagram of a configuration of a base station according to an embodiment of the present invention.
  • the base station 1800 includes: a request receiving unit 1801 and a message sending unit 1802. Other parts of the base station 1800 can refer to the prior art.
  • the request receiving unit 1801 receives a request message sent by the user equipment through the uplink of the first path, where the request message is used to request the base station to reconstruct the second path; and the message sending unit 1802 sends the reconstructed message by using the downlink of the first path. And causing the user equipment to reconstruct the second path according to the reconstruction message.
  • An embodiment of the present invention further provides a communication system, where the communication system includes a user equipment as described above. Specifically, it may be user equipment 900, user equipment 1000, user equipment 1100 or user equipment 1200 as shown in Figures 9-12. Alternatively, the communication system includes a user equipment and a base station as described above. The base station may be the base station 1600, the base station 1700, and the base station 1800 as shown in Figs.
  • FIG. 19 is a block diagram showing a configuration of a communication system according to an embodiment of the present invention.
  • the communication system includes a user equipment 1901, and the user equipment 1901 communicates with a macro cell base station 1902 or a small cell base station 1903 through a dual path.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes a computer to perform a link and configuration error as described in Embodiment 1 above in the user equipment when the program is executed in a user equipment Processing method.
  • Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a link and configuration error processing method as described in Embodiment 1 above in a user equipment.
  • An embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, The program causes the computer to perform a link and configuration error processing method as described in Embodiment 3 above in the base station.
  • Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a link and configuration error processing method as described in Embodiment 3 above in a base station.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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Abstract

La présente invention concerne, dans certains modes de réalisation, un procédé de traitement d'une erreur de liaison et de configuration, un équipement d'utilisateur et une station de base. Le procédé comporte les étapes suivantes: lorsque la configuration d'un deuxième canal échoue ou lorsqu'une indication d'échec de contrôle d'intégrité concernant une couche de protocole pour convergence de paquets de données du deuxième canal est reçue, un équipement d'utilisateur ne lance pas un processus de rétablissement de la connexion. Les modes de réalisation de la présente invention permettent d'améliorer un mécanisme de déclenchement de l'établissement de la connexion, et de garantir que la communication entre un équipement d'utilisateur et un réseau n'est pas interrompue intempestivement, améliorant ainsi la fiabilité de la communication et garantissant l'agrément d'utilisation.
PCT/CN2013/074090 2013-04-11 2013-04-11 Procédé de traitement d'une erreur de liaison et de configuration, équipement d'utilisateur, et station de base Ceased WO2014166093A1 (fr)

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