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WO2015027381A1 - Procédé de gestion d'une défaillance de la liaison radio, équipement d'utilisateur, et station de base - Google Patents

Procédé de gestion d'une défaillance de la liaison radio, équipement d'utilisateur, et station de base Download PDF

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Publication number
WO2015027381A1
WO2015027381A1 PCT/CN2013/082298 CN2013082298W WO2015027381A1 WO 2015027381 A1 WO2015027381 A1 WO 2015027381A1 CN 2013082298 W CN2013082298 W CN 2013082298W WO 2015027381 A1 WO2015027381 A1 WO 2015027381A1
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WO
WIPO (PCT)
Prior art keywords
radio link
rlf
link
base station
radio
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2013/082298
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English (en)
Chinese (zh)
Inventor
乌力吉
蔺波
张涛
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Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2013/082298 priority Critical patent/WO2015027381A1/fr
Priority to CN201380002700.8A priority patent/CN104641683B/zh
Publication of WO2015027381A1 publication Critical patent/WO2015027381A1/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
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method for processing a wireless link failure, and to a user equipment and a base station.
  • Carrier aggregation is the aggregation of multiple smaller bandwidth carriers into a larger bandwidth carrier to support high speed data rates.
  • UE User Equipment, user equipment
  • CA Carrier aggregation
  • the maintenance of the RRC connection refers to establishing a bearer for transmitting an RRC control message between the UE and the base station.
  • two base stations provide services for the UE at the same time. That is, a radio link is established between the UE and the two base stations, and each radio link has a radio bearer.
  • the two base stations are linked to each other, for example via a backhaul (backhaul) link.
  • backhaul backhaul
  • the inventor of the present application found in a long-term research and development that when the UE is served by two base stations, the UE performs RLM (radio only) on the radio link (represented by the radio link 1) with the base station operating on the main frequency band.
  • Link monitor if the radio link 1 detects RLF (radio link) Failure, radio link failure), the UE will initiate the RRC connection re-establishment process.
  • the radio link represented by the radio link 2 with the base station operating on the sub-band may remain normal, and the radio bearer on the radio link 1 can be completely switched to the radio.
  • Link 2 without having to initiate the RRC connection re-establishment process, therefore, if the UE still initiates the RRC connection re-establishment process at this time, it is obviously a waste of radio resources, resulting in degradation of network performance.
  • the technical problem to be solved by the present invention is to provide a method for processing a radio link failure, a user equipment, and a base station, which can reduce an unnecessary RRC connection reestablishment process when RLF occurs.
  • a first aspect of the present invention provides a method for processing a radio link failure.
  • the processing method includes: the UE simultaneously establishing a first radio link with the first base station and establishing a second radio link with the second base station; Whether the RLF occurs on a radio link and whether the RLF occurs on the second radio link; if the RLF occurs on the first radio link and the RLF does not occur on the second radio link, the UE abandons the RRC triggered by the RLF occurring on the first radio link. Connect the rebuild process.
  • the UE aborts the triggering due to the RLF occurring on the first radio link.
  • the step of the RRC connection re-establishment process specifically includes: if the RLF occurs on the first radio link and the RLF does not occur on the second radio link, the UE determines whether there is a radio bearer on the first radio link; if there is a radio on the first radio link Carrying, the UE confirms whether the radio bearer on the first radio link switches to the second radio link within the first predetermined time; if the radio bearer on the first radio link switches to the second radio chain within the first predetermined time The UE quits the RRC connection re-establishment procedure triggered by the RLF occurring on the first radio link.
  • the UE abandons the startup due to the first
  • the step of the RRC connection re-establishment procedure triggered by the RLF of the radio link further includes: if there is no radio bearer on the first radio link, the UE abandons the RRC connection re-establishment procedure triggered by the RLF occurring on the first radio link.
  • the UE aborts the startup due to the first
  • the step of the RRC connection re-establishment process triggered by the RLF of the radio link further includes: if the radio bearer on the first radio link does not switch to the second radio link within the first predetermined time, the UE starts due to the first radio chain The RRC connection re-establishment process triggered by the RLF.
  • the processing method further includes: if the RLF is not generated by the first radio link and the RLF is generated by the second radio link, Determining, by the UE, whether there is a radio bearer on the second radio link; if there is a radio bearer on the second radio link, the UE confirms whether the radio bearer on the second radio link is switched to the first radio link in the second predetermined time; If the radio bearer on the second radio link does not switch to the first radio link within the second predetermined time, the UE attempts to reconstruct the radio bearer on the second radio link on the first radio link.
  • the processing method further includes: if the first wireless link occurs RLF and the second wireless chain The RLF occurs on the path, and the UE initiates an RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the UE detects the first wireless
  • the step of whether the link occurs with the RLF and the second radio link whether the RLF occurs includes: the UE receiving the first configuration information generated by the first base station when establishing the first radio link and receiving the second radio link when establishing the second radio link, respectively The second configuration information generated by the first base station or the second base station; the UE detects whether the first radio link generates RLF according to the first configuration information, and detects whether the second radio link generates RLF according to the second configuration information.
  • the first configuration information includes a first configuration quantity, a first predetermined quantity, and a first configuration duration
  • the UE is configured according to the first
  • the step of detecting, by the configuration information, whether the first radio link has an RLF comprises: detecting, by the UE, whether the first configured number of out-of-synchronization indications are continuously received from the first wireless link; if the first configuration is continuously received from the first wireless link The number of out-of-synchronization indications, the UE starts the first timer; the UE detects whether the first predetermined number of synchronization indications are continuously received from the first wireless link before the timing duration of the first timer exceeds the first configuration duration; if not The first wireless link continuously receives the first predetermined number of synchronization indications, The UE determines that the first radio link has an RLF.
  • the step of the UE detecting, according to the first configuration information, whether the first radio link generates the RLF further includes: if A wireless link continuously receives a first predetermined number of synchronization indications, the UE determines that no RLF has occurred on the first wireless link, and turns off the first timer and clears the timing of the first timer.
  • the second configuration information includes a second configuration quantity, a second predetermined quantity, and a second configuration duration
  • the step of detecting, by the second configuration information, whether the second radio link generates the RLF comprises: detecting, by the UE, whether the second configured number of out-of-synchronization indications are continuously received from the second radio link; if the second configuration is continuously received from the second radio link The number of out-of-synchronization indications, the UE starts a second timer; the UE detects whether a second predetermined number of synchronization indications are continuously received from the second wireless link before the timing duration of the second timer exceeds the second configuration duration; if not The second wireless link continuously receives a second predetermined number of synchronization indications, and the UE determines that the second radio link has an RLF.
  • the step of the UE detecting, according to the second configuration information, whether the second radio link generates the RLF further includes: if The second wireless link continuously receives the second predetermined number of synchronization indications, the UE determines that the RLF does not occur on the second wireless link, and turns off the second timer and clears the timing of the second timer.
  • the step of the UE detecting, according to the first configuration information, whether the first radio link is RLF or not The step of detecting whether the RLF is generated by the second radio link is performed by the second configuration information. Specifically, when the UE detects that the first out-of-synchronization indication is received from the first radio link, the UE detects whether the second radio link is continuously received. The second configuration number of out of step indications.
  • the step of the UE detecting, according to the first configuration information, whether the first radio link is RLF or not is specifically: when the UE detects that the first configured number of out-of-synchronization indications are continuously received from the first radio link, the UE detects whether the second radio link is detected.
  • the second configuration number of out-of-step indications are continuously received.
  • the step of the UE detecting, according to the first configuration information, whether the first radio link is RLF or not The second configuration information is used to detect whether the RLF is generated on the second radio link. Specifically, when the UE determines that the RLF occurs on the first radio link, the UE detects whether the second configured number of out-of-synchronization indications are continuously received from the second radio link. .
  • the step of the UE detecting, according to the first configuration information, whether the first radio link is RLF and the UE according to the second The step of configuring information to detect whether the second radio link has an RLF is performed simultaneously.
  • the first timer and the second timer are the same timer, and the first configuration duration is equal to the first
  • the step of detecting, by the UE, whether the first radio link is RLF according to the first configuration information, and detecting whether the RLF is generated by the second radio link according to the second configuration information the method further includes: after the UE starts the first timer, the UE Detecting that when the first timer count duration exceeds the first configuration duration, the first predetermined number of synchronization indications are continuously received from the first wireless link or the second predetermined number of synchronization indications are continuously received from the second wireless link The UE turns off the first timer and clears the timing of the first timer.
  • the first predetermined number is equal to the second predetermined number.
  • the first timer and the second timer are the same timer, and the first configuration quantity is equal to the second Configuring the number, the detecting, by the UE, according to the first configuration information, whether the first radio link is RLF, and detecting whether the second radio link is RLF according to the second configuration information, further comprising: detecting, by the UE, from the first radio link or When the second wireless link continuously receives the first configured number of out-of-synchronization indications, the UE starts the first timer.
  • a second aspect of the present invention provides a user equipment, where the user equipment includes a link establishment module, a detection module, and an RRC module, where the link establishment module is configured to establish a first wireless link and a second with the first base station, respectively.
  • the base station establishes a second radio link
  • the detecting module is configured to detect whether the RLF occurs on the first radio link and the RLF occurs in the second radio link
  • the RRC module is configured to detect, by the detecting module, that the first radio link is RLF.
  • the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link is abandoned.
  • the user equipment further includes a determining module and a confirming module, where the determining module is configured to detect, by the detecting module, that the first wireless link generates RLF and the second When the RLF is not generated on the wireless link, determining whether there is a radio bearer on the first radio link; the confirming module is configured to confirm the radio bearer on the first radio link when the judging module determines that the radio bearer exists on the first radio link Whether to switch to the second wireless link within the first predetermined time; the RRC module is further configured to abandon the activation when the acknowledgment module confirms that the radio bearer on the first wireless link switches to the second wireless link within the first predetermined time The RRC connection re-establishment procedure triggered by the RLF occurring on the first radio link.
  • the RRC module is further configured to: when the determining module determines that the radio bearer does not exist on the first radio link, Initiating an RRC connection re-establishment procedure triggered by the RLF occurring on the first radio link.
  • the RRC module is further configured to: in the confirmation module, confirm that the radio bearer on the first radio link is not in the first predetermined When the time is switched to the second radio link, the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link is initiated.
  • the user equipment further includes a bearer setup module, where the judging module is further configured to detect, by the detecting module, the first wireless When the RLF is not generated on the link and the RLF is generated on the second radio link, determining whether there is a radio bearer on the second radio link; the confirming module is further configured to: when the judging module determines that the radio bearer exists on the second radio link, confirming that Whether the radio bearer on the radio link switches to the first radio link within a second predetermined time; the bearer establishing module is configured to confirm, in the confirming module, that the radio bearer on the second radio link does not switch to the second predetermined time At the first wireless link, an attempt is made to reconstruct a radio bearer on the second wireless link on the first wireless link.
  • the RRC module is further configured to: when the detecting module detects that the first radio link is RLF, and When the RLF occurs on the second radio link, the RRC connection reestablishment process triggered by the RLF of the first radio link is initiated.
  • the user equipment further includes a receiving module, The receiving module is configured to receive the first configuration information generated by the first base station when the link establishing module establishes the first wireless link, and receive the first base station or the first when the link establishing module establishes the second wireless link. a second configuration information generated by the second base station; the detecting module is configured to detect, according to the first configuration information, whether the first wireless link generates an RLF according to the first configuration information, and detect whether the second wireless link generates an RLF according to the second configuration information.
  • the first configuration information includes a first configuration quantity, a first predetermined quantity, and a first configuration duration
  • the detecting module includes a first out-of-synchronization detecting unit, a first synchronization detecting unit, a first starting unit, a determining unit, and a first timer, wherein the first out-of-synchronization detecting unit is configured to detect whether the first configuration is continuously received from the first wireless link a number of out-of-step indications;
  • the first activation unit is configured to: when the first out-of-synchronization detection unit detects that the first configuration number of out-of-synchronization indications are continuously received from the first wireless link, turn on the first timer;
  • the unit is configured to detect, when the first start unit starts the first timer, whether the first predetermined number of synchronization indications are continuously received from the first wireless link before the time duration of the first timer exceeds the first configuration time; the determining unit And determining, when the first
  • the determining unit is further configured to: when the first synchronization detecting unit detects that the first wireless link is continuously received Determining that the first wireless link does not generate RLF when a predetermined number of synchronization indications; the first activation unit is further configured to: when the first synchronization detecting unit detects that the first predetermined number of synchronization indications are continuously received from the first wireless link , the first timer is turned off and the time duration of the first timer is cleared.
  • the second configuration information includes the second configuration quantity, the second predetermined quantity, and the second configuration duration
  • the detecting module further a second out-of-synchronization detecting unit, a second synchronization detecting unit, a second starting unit, and a second timer, wherein the second out-of-synchronization detecting unit is configured to detect whether the second configured number of consecutively received from the second wireless link
  • the second start unit is configured to: when the second out-of-synchronization detecting unit detects that the second configured number of out-of-synchronization indications are continuously received from the second wireless link, turn on the second timer; When the second timer is turned on, detecting whether the second predetermined number of synchronization indications are continuously received from the second wireless link before the timing of the second timer exceeds the second configuration time; the determining unit further uses It is determined that the second radio link generates RLF when the second synchronization detecting unit detects that the second predetermined number of synchron
  • the determining unit is further configured to: when the second synchronization detecting unit detects that the second wireless link is continuously received Determining that the second radio link does not generate RLF when the second predetermined number of synchronization indications; the second initiating unit is further configured to: when the second synchronization detecting unit detects that the second predetermined number of synchronization indications are continuously received from the second radio link , closing the second timer and clearing the timing of the second timer.
  • the detecting module after detecting, according to the first configuration information, whether the first radio link is RLF, according to the second configuration
  • the information indicates whether the RLF is generated by the second radio link.
  • the first out-of-synchronization detecting unit detects that the first out-of-synchronization indication is received from the first radio link
  • the second out-of-synchronization detecting unit starts detecting whether the second out-of-synchronization detecting unit starts from the second
  • the wireless link continuously receives the second configured number of out-of-synchronization indications.
  • the detecting module after detecting, according to the first configuration information, whether the first radio link is RLF, according to the second configuration
  • the information is: when the first out-of-synchronization detecting unit detects that the first configured number of out-of-synchronization indications are continuously received from the first wireless link, the second out-of-synchronization detecting unit starts detecting whether A second configured number of out-of-synchronization indications are continuously received from the second wireless link.
  • the detecting module after detecting, according to the first configuration information, whether the first radio link is RLF, according to the second configuration
  • the information detecting whether the RLF occurs on the second radio link is specifically: when the determining unit determines that the RLF occurs on the first radio link, the second out-of-synchronization detecting unit starts to detect whether the second configured number of consecutive losses are received from the second radio link. Step indication.
  • the detecting module is configured to detect, according to the first configuration information, whether the first wireless link generates RLF and according to the second configuration The information detects whether the second radio link has an RLF.
  • the first timer and the second timer are the same timer, and the first configuration duration is equal to the first After the first configuration unit or the second activation unit turns on the first timer, the first synchronization detecting unit detects that the time duration of the first timer is continuously received from the first wireless link before the first configuration time length exceeds the first configuration time length.
  • the first The start unit or the second start unit is further configured to close the first timer and clear the time duration of the first timer.
  • the first timer and the second timer are the same timer, and the first configuration quantity is equal to the second Configuring the number, the first out-of-synchronization detecting unit detects that the first configured number of out-of-synchronization indications are continuously received from the first wireless link or the second out-of-synchronization detecting unit detects that the first configuration is continuously received from the second wireless link
  • the first start unit or the second start unit is further used to turn on the first timer when the number of out-of-synchronization indications.
  • a third aspect of the present invention provides a method for processing a radio link failure, where the method includes: the base station establishes a first radio link with the UE, where the UE simultaneously establishes a second radio link with another base station; Whether the RLF occurs on the wireless link; if the RLF occurs on the first radio link, the base station determines whether there is a radio bearer on the first radio link; if there is a radio bearer on the first radio link, the base station instructs the other base station to be the first radio link The radio bearer on the road switches to the second radio link.
  • the step of the base station instructing another base station to switch the radio bearer on the first radio link to the second radio link includes: the base station to another The base station sends the first state information, so that another base station sends a handover request to the base station according to the first state information, where the first state information is used to indicate that the first radio link generates RLF; the base station receives the handover request from another base station; A request is sent to another base station to cause the other base station to switch the radio bearer on the first wireless link to the second wireless link according to the handover instruction.
  • the step of the base station instructing another base station to switch the radio bearer on the first radio link to the second radio link comprises: the base station from another The base station receives the handover request, and the handover request is generated by the other base station according to the first state information of the RLF generated by the first radio link reported by the UE; the base station sends a handover instruction to another base station according to the handover request, so that another base station according to the handover instruction The radio bearer on the first wireless link switches to the second radio link.
  • the processing method further includes: receiving, by the base station, the second radio link RLF from the UE State information: the base station switches the radio bearer on the second radio link to the first radio link according to the second state information; the base station sends a handover completion instruction that feeds back the second state information to the UE, so that the UE confirms according to the handover completion command.
  • the wireless bearer on the two wireless links switches to the first wireless link.
  • a fourth aspect of the present invention provides a base station, where the base station includes a link establishment module, a detection module, a determination module, and an indication module, where the link establishment module is configured to establish a first wireless link with the UE, where The UE establishes a second wireless link with another base station at the same time; the detecting module is configured to detect whether the first wireless link generates RLF after the link establishing module establishes the first wireless link; and the determining module is configured to detect, by the detecting module, Determining whether there is a radio bearer on the first radio link when the RLF occurs on the radio link; the indicating module is configured to: when the judging module determines that the radio bearer exists on the first radio link, instruct the another base station to use the first radio link The upper radio bearer is switched to the second radio link.
  • the indication module includes a first sending unit, a first receiving unit, and an indicating unit, where the first sending unit is configured to send the first to another base station State information, such that another base station sends a handover request to the base station according to the first state information, where the first state information is used to indicate that the first radio link generates RLF; the first receiving unit is configured to receive a handover request from another base station, and The handover request is sent to the indication unit; the indication unit is configured to receive the handover request from the receiving unit, and send a handover instruction to another base station according to the handover request, so that another base station switches the radio bearer on the first radio link to the first according to the handover instruction.
  • Two wireless links are configured to send the first to another base station State information, such that another base station sends a handover request to the base station according to the first state information, where the first state information is used to indicate that the first radio link generates RLF; the first receiving unit is configured to receive a handover request from another base station, and The handover request
  • the indication module includes a first receiving unit and an indication unit, where the first receiving unit is configured to receive a handover request from another base station, and the handover request is Sending to the indication unit, the handover request is generated by the other base station according to the first state information of the RLF generated by the first radio link reported by the UE; the indication unit is configured to receive the handover request from the receiving unit, and send the handover instruction to another base station according to the handover request. So that another base station switches the radio bearer on the first radio link to the second radio link according to the handover instruction.
  • the base station further includes a second receiving unit, a second sending unit, and a switching unit, where The second receiving unit is configured to receive second state information of the second radio link RLF from the UE, and send the second state information to the switching unit, where the switching unit is configured to receive the second state information from the second receiving unit, according to the second The status information is used to switch the radio bearer on the second radio link to the first radio link, and the second sending unit is further configured to: after the switching unit switches the radio bearer on the second radio link to the first radio link, The UE sends a handover complete instruction for feeding back the second state information, so that the UE confirms that the radio bearer on the second radio link is switched to the first radio link according to the handover complete instruction.
  • a fifth aspect of the present invention provides a user equipment, where the user equipment includes a processor and a memory electrically connected to the processor, wherein the processor is configured to establish a first wireless link with the first base station and a second base station, respectively. And detecting, by the second wireless link, whether the RLF occurs on the first radio link and whether the RLF occurs on the second radio link, and when the RLF is detected on the first radio link and the RLF is not generated on the second radio link, The RRC connection re-establishment process triggered by the RLF of the first radio link; the memory is used to store data.
  • the method for processing a radio link failure of the present invention the user equipment, and the base station respectively detect the first radio link after establishing a first radio link with the first base station and establishing a second radio link with the second base station. Whether the RLF occurs on the radio link and whether the RLF occurs on the second radio link. If the RLF occurs on the first radio link and the RLF does not occur on the second radio link, the UE abandons the RRC connection triggered by the RLF occurring on the first radio link. The reconstruction process is performed to reduce the unnecessary RRC connection re-establishment process when RLF occurs, and to avoid wasting the use of radio resources.
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for processing a radio link failure according to the present application
  • FIG. 2 is a schematic flowchart of a second embodiment of a method for processing a radio link failure according to the present application
  • FIG. 3 is a schematic diagram of information exchange of switching radio bearers in the processing method shown in FIG. 2;
  • FIG. 4 is a schematic flowchart of a third embodiment of a method for processing a radio link failure according to the present application.
  • FIG. 5 is a schematic flowchart of a fourth embodiment of a method for processing a radio link failure according to the present application
  • FIG. 6 is a schematic flowchart of a fifth embodiment of a method for processing a radio link failure according to the present application.
  • FIG. 7 is a schematic structural diagram of a first embodiment of a user equipment according to the present application.
  • FIG. 8 is a schematic structural diagram of a second embodiment of a user equipment according to the present application.
  • FIG. 9 is a schematic structural diagram of a third embodiment of a user equipment according to the present application.
  • FIG. 10 is a schematic flowchart of a sixth embodiment of a method for processing a radio link failure according to the present application.
  • FIG. 11 is a schematic flowchart diagram of a seventh embodiment of a method for processing a radio link failure according to the present application.
  • FIG. 12 is a schematic structural diagram of an embodiment of a base station according to the present application.
  • FIG. 13 is a schematic structural diagram of a fourth embodiment of a user equipment according to the present application.
  • FIG. 1 is a schematic flowchart diagram of a first embodiment of a method for processing a wireless link failure according to the present application.
  • the method for processing a wireless link failure includes the following steps:
  • Step S11 The UE establishes a first radio link with the first base station and a second radio link with the second base station, respectively.
  • the first base station and the second base station simultaneously serve the UE.
  • the first base station and the second base station may be base stations in the same network standard, for example, the network standards of the first base station and the second base station are all GSM (Global System For Mobile Communication, Global System for Mobile Communications).
  • GSM Global System For Mobile Communication, Global System for Mobile Communications
  • the first base station and the second base station can also work at different frequency points, for example, the first base station works at GSM900Mhz, and the second base station works at GSM1800Mhz.
  • the first base station and the second base station may also be base stations in different network standards.
  • the inter-rat handover condition is met, for example, the network standard of the first base station is GSM, and the network standard of the second base station is CDMA (Code Division Multiple Access, code division multiple access), at this time, the UE can perform 2G (2rd-generation, second generation mobile communication technology) network to 3G (3rd-generation, third generation mobile communication technology) on the first base station and the second base station Switching of the network or switching of the 3G network to the 2G network.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access, code division multiple access
  • the signal coverage range of the second base station may also be within the signal coverage of the first base station, that is, the first base station is a macro base station, and the second base station is For the micro base station.
  • Step S12 The UE detects whether the RLF occurs on the first radio link and whether the RLF occurs in the second radio link, respectively.
  • Step S13 If the RLF occurs on the first radio link and the RLF does not occur on the second radio link, the UE abandons the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the RLF of the first radio link indicates that the UE cannot use the service provided by the first base station, but if the RLF does not occur on the second radio link, the UE may use the service provided by the second base station, so in the first wireless chain
  • the RLF occurrence does not initiate the RRC connection re-establishment process, but further determines whether to initiate the RRC connection re-establishment process according to the status of the second radio link.
  • the UE since the UE establishes the first radio link and the second radio link with the first base station and the second base station at the same time, when the RLF is detected on the first radio link, The RRC connection re-establishment process is not immediately started, but the RLF is detected on the second radio link. If the RLF does not occur on the second radio link, the UE abandons the RRC connection re-establishment process, thereby reducing unnecessary when the RLF occurs.
  • the purpose of the RRC connection re-establishment process is to avoid wasting the use of radio resources.
  • the method for processing a wireless link failure includes the following steps:
  • Step S21 The UE establishes a first radio link with the first base station and a second radio link with the second base station, respectively.
  • the first base station and the second base station serve the UE at the same time, and the first base station and the second base station may be base stations in the same network standard, and may be base stations in different network standards.
  • Step S22 The UE detects whether the RLF occurs on the first radio link and whether the RLF occurs in the second radio link, respectively.
  • Step S23 If the RLF occurs on the first radio link and the RLF does not occur on the second radio link, the UE determines whether there is a radio bearer on the first radio link.
  • Step S24 If there is a radio bearer on the first radio link, the UE confirms whether the radio bearer on the first radio link switches to the second radio link within the first predetermined time.
  • the UE needs to continue to use the radio bearer because the RLF is generated on the first radio link and the radio bearer exists on the first radio link. Otherwise, the UE cannot perform certain services normally.
  • the second radio link does not generate RLF, so the UE waits for the network side to switch the radio bearer on the first radio link to the second radio link, so as to achieve the purpose of rationally utilizing radio resources.
  • the UE cannot wait all the time, otherwise it will affect the user experience.
  • the timing of the first predetermined time may be implemented by a timer, which is also the waiting time of the UE.
  • Step S25 If the radio bearer on the first radio link switches to the second radio link within the first predetermined time, the UE abandons the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the second base station can replace the first base station to provide the service of the original first base station, and the UE does not need to perform
  • the RRC connection re-establishment process reduces unnecessary RRC connection re-establishment procedures and avoids wasting radio resources.
  • FIG. 3 is a schematic diagram of information exchange of switching radio bearers in the processing method shown in FIG. 2.
  • the information interaction between the UE, the first base station, and the second base station is as follows:
  • Step S31 The UE reports the information about the RLF of the first radio link to the second base station, and starts a timer.
  • the timer time is the first predetermined time.
  • Step S32 The second base station sends, to the first base station, a handover request for switching the radio bearer on the first radio link to the second radio link.
  • Step S33 The first base station feeds back configuration information of the radio bearer on the first radio link to the second base station.
  • the switching request and configuration information are transmitted through backhaul.
  • Step S34 The second base station performs handover of the radio bearer according to the configuration information.
  • Step S35 The second base station sends the indication information of the handover completion to the UE.
  • Step S36 The UE confirms whether the indication information is received before the timer expires.
  • the UE will abandon the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the process of switching the radio bearer is completely performed by the network side, and the speed of switching the radio bearer on the network side affects the user experience, because the UE is in the waiting state when the information about the RLF of the first radio link is reported to be received.
  • the setting of the first predetermined time by the UE can avoid the phenomenon that the long-term handover on the network side is unsuccessful or the handover is slow, causing the UE to wait blindly.
  • the first base station itself may also detect whether the first radio link has RLF, if the first base station detects the first radio.
  • the RLF is generated on the link, and the first base station can directly send configuration information to the second base station, that is, the information interaction between the UE, the first base station, and the second base station may include only step S33, step S34, step S35, and step. S36, without including step S31 and step S32.
  • FIG. 4 is a schematic flowchart diagram of a third embodiment of a method for processing a radio link failure according to the present application.
  • the method for processing a wireless link failure includes the following steps:
  • Step S41 The UE establishes a first radio link with the first base station and a second radio link with the second base station, respectively.
  • Step S42 The UE detects whether the RLF occurs on the first radio link. If yes, if the RLF occurs on the first radio link, step S43 is performed. If no, if the RLF does not occur on the first radio link, step S48 is performed.
  • Step S43 The UE detects whether the RLF is generated on the second radio link. If yes, if the RLF occurs on the second radio link, step S47 is performed, and if no, if the RLF does not occur on the second radio link, step S44 is performed.
  • Step S44 The UE determines whether there is a radio bearer on the first radio link. If yes, it determines that there is a radio bearer on the first radio link, and then proceeds to step S45. If not, it determines that there is no radio bearer on the first radio link. Then, step S46 is performed.
  • the UE if there is no radio bearer on the first radio link, the UE has no service on the first base station.
  • Step S45 The UE confirms whether the radio bearer on the first radio link switches to the second radio link within the first predetermined time. If yes, the radio bearer on the first radio link switches to the second in the first predetermined time. If the wireless link does not switch to the second wireless link within the first predetermined time, the process proceeds to step S47.
  • radio bearer exists on the first radio link, the radio bearer needs to be switched to the second radio link to ensure that the service on the UE is normal.
  • the process of radio bearer handover is performed by the network side, and the UE only needs to confirm the result of the handover.
  • Step S46 The UE abandons the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the service on the UE is performed on the second base station, and the RLF status of the first radio link does not affect.
  • the second radio link so the UE does not need to initiate the RRC connection re-establishment process.
  • Step S47 The UE initiates an RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the RRC connection reestablishment process when the first radio link and the second radio link both generate RLF, the RRC connection reestablishment process must be performed.
  • Step S48 The UE detects whether the RLF is generated on the second radio link, and if yes, the RLF occurs on the second radio link, and then proceeds to step S49.
  • Steps S48 and S43 are both detecting whether the RLF is generated on the second radio link, but the conditions are different. If the RLF does not occur on the second wireless link, step S42 is repeated.
  • Step S49 The UE determines whether there is a radio bearer on the second radio link, and if yes, determines that there is a radio bearer on the second radio link, and then proceeds to step S410.
  • step S42 is repeated, and when the first radio link RLF is detected after the next step S42 is performed, the RRC connection re-establishment process is directly started.
  • Step S410 The UE confirms whether the radio bearer on the second radio link switches to the first radio link within a second predetermined time. If not, the radio bearer on the second radio link does not switch to the second predetermined time. The first wireless link proceeds to step S411.
  • the network side switches the radio bearer on the second radio link to the first radio link because the RLF does not occur on the first radio link.
  • the UE needs to confirm whether the handover process is completed within the second predetermined time. If it is confirmed that the radio bearer on the second radio link is switched to the first radio link in the second predetermined time, step S42 is repeated, and when the RLF is detected on the first radio link after the next step S42 is performed, The RRC connection re-establishment process is initiated.
  • the first predetermined time is equal to the second predetermined time.
  • Step S411 The UE attempts to reconstruct the radio bearer on the second radio link on the first radio link.
  • the process of the UE re-establishing the radio bearer on the second radio link may be that the UE sends a radio bearer request to the first base station, and the first base station allocates a radio resource to the UE according to the request, and after the radio resource is completed, the first base station sends the radio resource to the UE.
  • a confirmation message is provided to cause the UE to transmit signals on the first wireless link for service.
  • the RRC connection re-establishment process when it is detected that only one radio link of the first radio link and the second radio link generates RLF, the RRC connection re-establishment process is not started, but The radio bearer on the radio link is switched to another radio link, thereby achieving the purpose of reducing unnecessary RRC connection reestablishment process when RLF occurs, and fully utilizing radio resources to avoid wasting radio resources.
  • FIG. 5 is a schematic flowchart diagram of a fourth embodiment of a method for processing a radio link failure according to the present application.
  • the method for processing a wireless link failure includes the following steps:
  • Step S51 The UE establishes a first radio link with the first base station and a second radio link with the second base station, respectively.
  • Step S52 The UE receives the first configuration information generated by the first base station when establishing the first radio link and the second configuration information generated by the first base station or the second base station when establishing the second radio link, respectively.
  • the one configuration information includes a first configuration quantity, a first predetermined quantity, and a first configuration duration
  • the second configuration information includes a second configuration quantity, a second predetermined quantity, and a second configuration duration.
  • the UE may receive the first configuration information by using the first radio link, or receive the first configuration information by using the second radio link, and may even receive the first configuration information by using other methods.
  • the UE may receive the second configuration information through the second wireless link or other means.
  • the second configuration information may be generated by the first base station.
  • Step S53 The UE detects whether the first configured number of out-of-synchronization indications are continuously received from the first wireless link, and if yes, continuously receives the first configured number of out-of-synchronization indications from the first wireless link, proceeding to step S54.
  • the first threshold and the second threshold are generally set for the wireless link, and the first threshold is greater than the second threshold.
  • Cell reference signal Cell Reference
  • the UE will receive the synchronization indication.
  • the signal quality of the cell reference signal is lower than the second threshold, the UE will receive the out-of-synchronization indication, if the signal quality of the cell reference signal Above the second threshold but below the first threshold, the UE receives neither the synchronization indication nor the out-of-synchronization indication.
  • Step S54 The UE starts the first timer.
  • the first timer uses the first configured duration as the timing threshold.
  • Step S55 The UE detects whether the first predetermined number of synchronization indications are continuously received from the first wireless link before the timing duration of the first timer exceeds the first configuration duration, and if so, the timing of the first timer exceeds the first duration. If the first predetermined number of synchronization indications are continuously received from the first wireless link before the configuration time length, proceed to step S56. If no, the time duration of the first timer is not continuous from the first wireless link before the first configuration time length exceeds the first configuration time length. Upon receiving the first predetermined number of synchronization indications, step S57 is performed.
  • the timing of the first timer exceeds the first configuration duration, indicating that the first timer expires, and the first wireless link is considered to occur even after the first predetermined number of synchronization indications are continuously received from the first wireless link. RLF.
  • Step S56 The UE determines that the RLF does not occur on the first radio link, and turns off the first timer and clears the time duration of the first timer.
  • the first timer After the first timer is turned off and cleared, the next time the first timer is turned on, it will be re-timed.
  • Step S57 The UE determines that the first radio link generates RLF.
  • Step S58 The UE detects whether the second configured number of out-of-synchronization indications are continuously received from the second wireless link, and if yes, continuously receives the second configured number of out-of-synchronization indications from the second wireless link, proceeding to step S59.
  • step S58 and step S53 are performed simultaneously.
  • Step S59 The UE starts the second timer.
  • the second timer uses the second configured duration as the timing threshold.
  • Step S510 The UE detects whether a second predetermined number of synchronization indications are continuously received from the second radio link before the timing duration of the second timer exceeds the second configuration duration, and if so, the timing of the second timer exceeds the second duration. If the second predetermined number of synchronization indications are continuously received from the second wireless link before the configuration time length, step S512 is performed, and if not, the time duration of the second timer is not continuous from the second wireless link before the second configuration duration is exceeded. Upon receiving the second predetermined number of synchronization indications, step S511 is performed.
  • the timing of the second timer exceeds the second configuration duration, indicating that the second timer expires, and the second wireless link is considered to occur even after the second predetermined number of synchronization indications are continuously received from the second wireless link. RLF.
  • Step S511 The UE determines that the second radio link generates RLF.
  • Step S512 The UE determines that the RLF does not occur on the second radio link, and turns off the second timer and clears the timing of the second timer.
  • Step S513 The UE abandons the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the RRC connection re-establishment process is abandoned.
  • step S53 and step S58 are performed simultaneously, that is, the step of the UE detecting whether the first radio link is RLF according to the first configuration information, and the step of the UE detecting whether the second radio link is RLF according to the second configuration information. At the same time.
  • the step of detecting, by the UE, whether the first radio link is RLF according to the first configuration information may be performed before the step of the UE detecting whether the second radio link is RLF according to the second configuration information, for example, the step S58 may be performed when the determination in step S53 is YES, that is, when the UE detects that the first configured number of out-of-synchronization indications are continuously received from the first wireless link, The UE detects whether the second configured number of out-of-synchronization indications are continuously received from the second wireless link; or step S58 is performed after step S57, that is, when the UE determines that the first radio link generates RLF, the UE detects whether the second wireless chain is detected.
  • the road continuously receives the second configured number of out-of-synchronization indications; or in step 53, when receiving the first out-of-synchronization indication, performing step S48, that is, the UE detects that the first loss is received from the first wireless link.
  • step S48 the UE detects whether a second configured number of out-of-synchronization indications are continuously received from the second wireless link.
  • FIG. 6 is a schematic flowchart diagram of a fifth embodiment of a method for processing a radio link failure according to the present application. This embodiment is a modification of the fourth embodiment.
  • the method for processing a radio link failure includes the following steps:
  • Step S61 The UE establishes a first radio link with the first base station and a second radio link with the second base station, respectively.
  • Step S62 The UE receives the first configuration information generated by the first base station when establishing the first radio link and the second configuration information generated by the first base station or the second base station when establishing the second radio link, respectively.
  • the one configuration information includes a first configuration quantity, a first predetermined quantity, and a first configuration duration
  • the second configuration information includes a second configuration quantity, a second predetermined quantity, and a second configuration duration.
  • Step S63 The UE detects whether the first configured number of out-of-synchronization indications are continuously received from the first wireless link.
  • Step S64 The UE detects whether the second configured number of out-of-synchronization indications are continuously received from the second wireless link.
  • step S63 and step S64 are performed simultaneously.
  • Step S65 The UE starts the first timer.
  • Step S66 The UE detects whether the first predetermined number of synchronization indications are continuously received from the first wireless link before the timing duration of the first timer exceeds the first configuration duration, and if so, the timing of the first timer exceeds the first duration. Before the configuration time period, the first predetermined number of synchronization indications are continuously received from the first wireless link, and then step S68 is performed.
  • Step S67 The UE detects whether a second predetermined number of synchronization indications are continuously received from the second radio link before the timing duration of the first timer exceeds the first configuration duration, and if so, the timing of the first timer exceeds the first duration. Before the configuration time period, the second predetermined number of synchronization indications are continuously received from the second wireless link, and then step S69 is performed.
  • the first configuration duration is equal to the second configuration duration.
  • the first predetermined number may also be equal to the second predetermined number.
  • Step S68 The UE determines that the RLF does not occur on the first radio link, and turns off the first timer and clears the time duration of the first timer.
  • the first timer is turned off, which is equivalent to interrupting detecting whether the second radio link has an RLF.
  • the UE does not initiate the RRC connection re-establishment process.
  • Step S69 The UE determines that the RLF does not occur on the second radio link, and turns off the first timer and clears the time duration of the first timer.
  • the first timer is turned off, which is equivalent to interrupting detecting whether the first radio link has an RLF.
  • the UE does not initiate the RRC connection re-establishment process.
  • Step S610 The UE initiates an RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link or the second radio link.
  • the first wireless is illustrated
  • the RLF occurs on both the link and the second radio link, and the RRC connection re-establishment process is initiated.
  • the first number of configurations is equal to the second number of configurations, such that detection of the first wireless link and detection of the second wireless link can share parameters as much as possible, then the UE detects from the first wireless link or from When the second wireless link continuously receives the first configured number of out-of-synchronization indications, the UE starts the first timer.
  • FIG. 7 is a schematic structural diagram of a first embodiment of a user equipment according to the present application.
  • the user equipment 70 includes a link establishment module 701, a detection module 702, and an RRC module 703.
  • the link establishing module 701 is configured to establish a first wireless link with the first base station 71 and a second wireless link with the second base station 72, respectively. After the wireless link is established, the first base station 71 and the second base station 72 simultaneously serve the user equipment 70.
  • the first base station 71 and the second base station 72 may be base stations in the same network standard. For example, the network specifications of the first base station 71 and the second base station 72 are all GSM. On this basis, the first base station 71 and the second base station 72 can also operate at different frequency points, for example, the first base station 71 operates at GSM900Mhz, and the second base station 72 operates at GSM1800Mhz.
  • the first base station 71 and the second base station 72 may also be base stations in different network systems.
  • the network format of the first base station 71 is GSM
  • the network format of the second base station 72 is CDMA
  • the signal coverage range of the second base station 72 may also be within the signal coverage of the first base station 71, that is, The first base station 71 is a macro base station, and the second base station 72 is a micro base station.
  • the detecting module 702 is configured to detect whether an RLF occurs on the first wireless link and an RLF occurs in the second wireless link, respectively.
  • the RRC module 703 is configured to, when the detecting module 702 detects that the RLF occurs on the first radio link and the RLF does not occur on the second radio link, abandon the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link. Since the user equipment 70 is simultaneously connected to the first base station 71 and the second base station 72, when the radio link failure occurs on the first radio link, the second radio link may remain normal, and the user equipment 70 may continue to be continued by the second base station 72. Service, it is not necessary to initiate the RRC connection re-establishment process at this time.
  • the RRC module 703 is further configured to: when the detecting module 702 detects that the first radio link generates RLF and the second radio link generates RLF, initiates an RRC connection reestablishment triggered by the RLF occurring on the first radio link. process.
  • the RLF occurs on both the first radio link and the second radio link, indicating that the user equipment 70 cannot continue to serve the first base station 71 or the second base station 72. In this case, the RRC connection reestablishment procedure should be initiated.
  • FIG. 8 is a schematic structural diagram of a second embodiment of a user equipment according to the present application.
  • the user equipment 80 includes a link establishment module 801, a detection module 802, a determination module 803, an acknowledgment module 804, an RRC module 805, and a bearer setup module 806.
  • the link establishing module 801 is configured to establish a first wireless link with the first base station 81 and a second wireless link with the second base station 82, respectively.
  • the detecting module 802 block is configured to detect whether the RLF occurs on the first wireless link and whether the RLF occurs in the second wireless link, respectively.
  • the determining module 803 is configured to determine whether a radio bearer exists on the first radio link when the detecting module 802 detects that the RLF is generated on the first radio link and the RLF does not occur in the second radio link. Since the RLF occurs on the first radio link, and the radio bearer exists on the first radio link, the user equipment 80 needs to continue to use the radio bearer, otherwise the user equipment 80 cannot perform certain services normally. At this time, the second radio link does not generate RLF, so the user equipment 80 waits for the network side to switch the radio bearer on the first radio link to the second radio link, so as to achieve the purpose of rationally utilizing radio resources. However, the user device 80 may not wait all the time, otherwise it will affect the user experience.
  • the timing of the first predetermined time may be implemented by a timer, which is the waiting time of the user equipment 80.
  • the confirmation module 804 is configured to confirm, when the determining module 803 determines that there is a radio bearer on the first radio link, whether the radio bearer on the first radio link switches to the second radio link within the first predetermined time.
  • the RRC module 805 is configured to: when the acknowledgment module 804 confirms that the radio bearer on the first radio link switches to the second radio link within the first predetermined time or when the determining module 803 determines that there is no radio bearer on the first radio link Abandoning the RRC connection re-establishment procedure triggered by the RLF occurring on the first radio link, and for confirming in the confirmation module 804 that the radio bearer on the first radio link does not switch to the second radio link within the first predetermined time At this time, an RRC connection reestablishment procedure triggered by the RLF of the first radio link is initiated.
  • the second base station 82 can replace the first base station 81 to provide the service of the original first base station 81, and the user equipment. 80 does not need to perform an RRC connection re-establishment process, thereby reducing unnecessary RRC connection re-establishment process and avoiding wasting radio resources.
  • the determining module 803 is further configured to determine whether a radio bearer exists on the second radio link when the detecting module 802 detects that the RLF is not generated on the first radio link and the RLF occurs in the second radio link.
  • the confirmation module 804 is further configured to: when the determining module 803 determines that there is a radio bearer on the second radio link, confirm whether the radio bearer on the second radio link switches to the first radio link within a second predetermined time.
  • the network side switches the radio bearer on the second radio link to the first radio link because the RLF does not occur on the first radio link.
  • the UE needs to confirm whether the handover process is completed within the second predetermined time.
  • the first predetermined time is equal to the second predetermined time.
  • the bearer establishing module 806 is configured to attempt to reconstruct the second wireless link on the first wireless link when the confirming module 804 confirms that the radio bearer on the second radio link does not switch to the first radio link within the second predetermined time.
  • Radio bearer on The process of the user equipment 80 reestablishing the radio bearer on the second radio link may be that the user equipment 80 sends a radio bearer request to the first base station 81, and the first base station 81 allocates radio resources to the user equipment 80 according to the request, and the radio resources are completed. Thereafter, the first base station 81 sends an acknowledgment message to the user equipment 80 to cause the user equipment 80 to transmit a signal on the first wireless link for service.
  • the detecting module 802 detects that only one radio link of the first radio link and the second radio link is RLF, the RRC connection reestablishment process is not started, but the network side is waiting.
  • the radio bearer on the radio link is switched to another radio link, thereby achieving the purpose of reducing unnecessary RRC connection reestablishment process when RLF occurs, and fully utilizing radio resources to avoid wasting radio resources.
  • FIG. 9 is a schematic structural diagram of a third embodiment of a user equipment according to the present application.
  • the user equipment 90 includes a link establishment module 901, a receiving module 902, a detection module 903, and an RRC module 904.
  • the link establishing module 901 is configured to establish a first wireless link with the first base station 91 and a second wireless link with the second base station 92, respectively.
  • the receiving module 902 is configured to receive the first configuration information generated by the first base station 91 when the link establishing module 901 establishes the first wireless link, and receive the first base station when the second wireless link is established by the link establishing module 901, respectively. 91 or second configuration information generated by the second base station 92.
  • the receiving module 902 may receive the first configuration information by using the first wireless link, or receive the first configuration information by using the second wireless link, and may even receive the first configuration information by using other methods.
  • the receiving module 902 can receive the second configuration information through the second wireless link or other means. If the first base station is a macro base station and the second base station is a micro base station, the second configuration information may be generated by the first base station.
  • the detecting module 903 is configured to detect, according to the first configuration information, whether the first wireless link generates RLF and detect whether the second wireless link generates RLF according to the second configuration information.
  • the RRC module 904 is configured to, when the detecting module 903 detects that the RLF occurs on the first radio link and the RLF does not occur on the second radio link, abandon the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link.
  • the first configuration information includes a first configuration quantity, a first predetermined quantity, and a first configuration duration.
  • the second configuration information includes a second configuration number, a second predetermined number, and a second configuration duration.
  • the detecting module 903 includes a first out-of-synchronization detecting unit 931, a first starting unit 932, a first timer 933, a first synchronization detecting unit 934, a determining unit 935, a second out-of-synchronization detecting unit 941, a second starting unit 942, and a Two timers 943 and a second synchronization detecting unit 944.
  • the first out-of-synchronization detecting unit 931 is configured to detect whether the first configured number of out-of-synchronization indications are continuously received from the first wireless link.
  • the first threshold and the second threshold are generally set for the first wireless link, and the first threshold is greater than the second threshold.
  • the first out-of-synchronization detecting unit 931 When the signal quality of the cell reference signal is higher than the first threshold, the first out-of-synchronization detecting unit 931 will receive the synchronization indication, and when the signal quality of the cell reference signal is lower than the second threshold, the first out-of-synchronization detecting unit 931 will receive To the out-of-synchronization indication, if the signal quality of the cell reference signal is higher than the second threshold but lower than the first threshold, the first out-of-synchronization detecting unit 931 receives neither the synchronization indication nor the out-of-synchronization indication.
  • the first starting unit 932 is configured to enable the first timer 933 when the first out-of-synchronization detecting unit 931 detects that the first configured number of out-of-synchronization indications are continuously received from the first wireless link.
  • the first timer 933 has a first configuration time length as a timing threshold.
  • the first synchronization detecting unit 934 is configured to detect, when the first timer 933 is turned on by the first starting unit 932, whether the first time period before the first timer 933 exceeds the first configuration time period, whether the first time is received from the first wireless link. A predetermined number of synchronization indications.
  • the second out-of-synchronization detecting unit 941 is configured to detect whether the second configured number of out-of-synchronization indications are continuously received from the second wireless link.
  • the second starting unit 942 is configured to enable the second timer 943 when the second out-of-synchronization detecting unit detects that the second configured number of out-of-synchronization indications are continuously received from the second wireless link.
  • the second timer 943 has a second configured duration as a timing threshold.
  • the second synchronization detecting unit 944 is configured to detect, when the second timer 943 is turned on by the second starting unit 942, whether the second timer 943 continuously receives the second time from the second wireless link before the second configuration time length exceeds the second configuration time length. A predetermined number of synchronization indications.
  • the determining unit 935 is configured to determine that the first wireless link generates RLF when the first synchronization detecting unit 934 detects that the first predetermined number of synchronization indications are not continuously received from the first wireless link, or at the second synchronization detecting unit 944. It is detected that the second predetermined number of synchronization indications are not continuously received from the second wireless link, and it is determined that the second radio link generates RLF.
  • the timing of the first timer 933 exceeds the first configuration duration, indicating that the first timer 933 times out, even if the first synchronization detecting unit 934 continuously receives the first predetermined number of synchronization indications from the first wireless link.
  • the RLF will be considered to occur on the first radio link.
  • the second timer 933 times out it is also considered that the second radio link generates RLF.
  • the determining unit 935 is further configured to determine that the first wireless link does not generate the RLF and the second synchronization detecting unit 944 when the first synchronization detecting unit 934 detects that the first predetermined number of synchronization indications are continuously received from the first wireless link. When it is detected that the second predetermined number of synchronization indications are continuously received from the second wireless link, it is determined that the RLF is not generated by the second wireless link.
  • the first starting unit 932 is further configured to: when the first synchronization detecting unit 934 detects that the first predetermined number of synchronization indications are continuously received from the first wireless link, turn off the first timer and clear the timing duration of the first timer. After the first timer 933 is turned off and emptied, the next time the first timer 933 is turned on will be re-timed.
  • the second starting unit 942 is further configured to: when the second synchronization detecting unit 944 detects that the second predetermined number of synchronization indications are continuously received from the second wireless link, turn off the second timer and clear the timing duration of the second timer. After the second timer 943 is turned off and emptied, the next time the second timer 943 is turned on, it will be re-timed.
  • the detecting module 903 detects whether the RLF is generated on the first wireless link according to the first configuration information, and detects whether the RLF occurs on the second wireless link according to the second configuration information, or the detecting module 903 detects the first wireless according to the first configuration information. Whether the RLF is generated on the link and detecting whether the second radio link is RLF according to the second configuration information may be specifically classified into four cases. First, the first out-of-synchronization detecting unit 931 detects that the first out-of-synchronization detecting unit 931 receives the information from the first radio link.
  • the second out-of-synchronization detecting unit 941 starts to detect whether the second configured number of out-of-synchronization indications are continuously received from the second wireless link;
  • the first out-of-synchronization detecting unit 931 detects the slave
  • the second out-of-synchronization detecting unit 941 starts to detect whether the second configured number of out-of-synchronization indications are continuously received from the second wireless link;
  • the determining unit 935 determines that the RLF occurs on the first radio link
  • the second out-of-synchronization detecting unit 941 starts detecting whether the second configured number of out-of-synchronization indications are continuously received from the second radio link;
  • This embodiment is preferably a fourth type.
  • the first timer 933 and the second timer 943 are the same timer, and the first configuration duration is equal to the second configuration duration, and the first predetermined number may also be equal to the second predetermined number.
  • the first synchronization detecting unit 934 detects that the time duration of the first timer 933 is continuous from the first wireless link before the first configuration time length exceeds the first configuration time length.
  • Receiving the first predetermined number of synchronization indications or the second synchronization detecting unit 944 detects that the second predetermined number of synchronization indications are continuously received from the second wireless link before the timing duration of the first timer 933 exceeds the first configured duration
  • the first starting unit 932 or the second starting unit 942 is further configured to turn off the first timer 933 and clear the timing of the first timer 933.
  • the first predetermined number of synchronization indications are not continuously received from the first wireless link or the second predetermined number of synchronization indications are received from the second wireless link before the first timer 933 times out, the first The RLF occurs on both the wireless link and the second wireless link, and the RRC connection re-establishment process is initiated.
  • the first out-of-synchronization detecting unit 931 detects that the first configured number of out-of-synchronization indications are continuously received from the first wireless link or the second out-of-synchronization detecting unit 941 detects
  • the first activation unit 932 or the second activation unit 942 is further configured to enable the first timer 933 when the first configuration number of out-of-synchronization indications are continuously received from the second wireless link.
  • FIG. 10 is a schematic flowchart diagram of a sixth embodiment of a method for processing a radio link failure according to the present application.
  • the method for processing a wireless link failure includes the following steps:
  • Step S110 The base station establishes a first radio link with the UE, where the UE establishes a second radio link with another base station at the same time.
  • the base station and the other base station simultaneously serve the UE.
  • the two may be base stations in the same network standard.
  • the network specifications of the base station and the other base station are both GSM, and may be base stations in different network standards.
  • the base station and the other base station satisfy the inter-rat handover condition, the network standard of the base station is GSM, and the network standard of the other base station is CDMA.
  • Step S120 The base station detects whether an RLF occurs on the first radio link.
  • Step S130 If the RLF occurs on the first radio link, the base station determines whether there is a radio bearer on the first radio link.
  • the base station can detect whether the RLF occurs on the first radio link.
  • a wireless link exists on the first wireless link, indicating that the UE has a service on the base station.
  • Step S140 If there is a radio bearer on the first radio link, the base station instructs another base station to switch the radio bearer on the first radio link to the second radio link.
  • the process of switching the radio bearer is equivalent to switching the UE service to the other base station.
  • the base station instructs another base station to perform radio bearer handover, and the UE does not need to participate in the whole process, thereby reducing the mental overhead.
  • FIG. 11 is a schematic flowchart diagram of a seventh embodiment of a method for processing a radio link failure according to the present application.
  • the method for processing a wireless link failure includes the following steps:
  • Step S210 The base station establishes a first radio link with the UE, where the UE simultaneously establishes a second radio link with another base station.
  • Step S220 The base station detects whether an RLF occurs on the first radio link.
  • Step S230 If the RLF occurs on the first radio link, the base station determines whether there is a radio bearer on the first radio link.
  • Step S240 If there is a radio bearer on the first radio link, the base station instructs another base station to switch the radio bearer on the first radio link to the second radio link.
  • Step S250 The base station receives second state information of the second radio link RLF from the UE.
  • the base station and the other base station satisfy an inter-rat handover condition, and the signal coverage of the other base station is within the signal coverage of the base station.
  • the base station can receive the second status information through the backhoul.
  • Step S260 The base station switches the radio bearer on the second radio link to the first radio link according to the second state information.
  • the another base station cannot continue to provide services for the UE, and therefore the base station switches the radio bearer to serve the UE instead of the other base station.
  • Step S270 The base station sends a handover completion instruction for feeding back the second state information to the UE, so that the UE confirms that the radio bearer on the second radio link is switched to the first radio link according to the handover completion instruction.
  • the handover completion instruction is sent to the UE.
  • the UE is in a waiting state, and the handover completion command may cause the UE to end the waiting state for the next operation.
  • step S240 includes:
  • Step S241 The base station sends the first state information to another base station, so that another base station sends a handover request to the base station according to the first state information, where the first state information is used to indicate that the first radio link generates the RLF.
  • Step S242 The base station receives the handover request from another base station.
  • Step S243 The base station sends a handover instruction to another base station according to the handover request, so that another base station switches the radio bearer on the first radio link to the second radio link according to the handover instruction.
  • the handover instruction includes at least a radio resource configuration requirement of the radio bearer, such as a channel configuration.
  • step S240 may include only step S242 and step S243, and does not include step S241.
  • the handover request received by the base station from another base station is generated by the other base station according to the first state information of the RLF generated by the first radio link reported by the UE. That is to say, both the UE and the base station can detect that the first radio link generates RLF, and the first status information is sent by the UE to another base station.
  • FIG. 12 is a schematic structural diagram of an embodiment of a base station according to the present application.
  • the base station 310 includes a link establishment module 311, a detection module 312, a determination module 313, and an indication module 314.
  • the link establishing module 311 is configured to establish a first wireless link with the UE 320, wherein the UE 320 simultaneously establishes a second wireless link with another base station 330.
  • the detecting module 312 is configured to detect whether the RLF occurs on the first wireless link after the link establishing module 311 establishes the first wireless link.
  • the determining module 313 is configured to determine whether a radio bearer exists on the first radio link when the detecting module 312 detects that the first radio link generates RLF.
  • the indication module 314 is configured to, when the determining module 313 determines that there is a radio bearer on the first radio link, instruct the another base station 330 to switch the radio bearer on the first radio link to the second radio link.
  • the indication module 314 includes a first sending unit 3141, a first receiving unit 3142, and an indicating unit 3143.
  • the first sending unit 3141 is configured to send the first state information to another base station 330, so that another base station 330 sends a handover request to the base station 310 according to the first state information, where the first state information is used to indicate that the first radio link generates RLF. .
  • the first receiving unit 3142 is configured to receive a handover request from another base station 330, and send the handover request to the indication unit 3143.
  • the indication unit 3143 is configured to receive a handover request from the receiving unit, and send a handover instruction to another base station according to the handover request, so that another base station switches the radio bearer on the first radio link to the second radio link according to the handover instruction.
  • the base station 310 further includes a second receiving unit 315, a switching unit 316, and a second transmitting unit 317.
  • the second receiving unit 315 is configured to receive second state information of the second radio link RLF from the UE 320, and send the second state information to the switching unit 316.
  • the switching unit 316 is configured to receive second state information from the second receiving unit 315, and switch the radio bearer on the second wireless link to the first wireless link according to the second state information.
  • the second sending unit 317 is configured to: after the switching unit 316 switches the radio bearer on the second radio link to the first radio link, send a handover complete instruction that feeds back the second state information to the UE 320, so that the UE 320 completes the handover completion command according to the handover. Confirming that the radio bearer on the second radio link switches to the first radio link.
  • FIG. 13 is a schematic structural diagram of a fourth embodiment of a user equipment according to the present application.
  • the user equipment includes a processor 410, a receiver 420, an emitter 430, a random access memory (RAM) 440, a read only memory (ROM) 450, and a bus 460. And a Network Interface Unit 470.
  • the processor 410 Receiver 420, transmitter 430, random access memory 440, read only memory 450, and network interface unit 470 are coupled via bus 460, respectively.
  • the user equipment needs to be operated, it is cured in the read only memory 450.
  • BIOS Basic input/output system
  • BIOS Basic input/output system
  • the loader boots the system to boot, guiding the user device into normal operation. After the user device enters the normal running state, the application is run in the random access memory 440 (Application) Programs and operating system (OS), making:
  • the processor 410 is configured to establish a first wireless link with the first base station (not shown) and a second wireless link with the second base station (not shown) to detect whether the first wireless link generates RLF and the first wireless link respectively. Whether the RLF occurs on the second radio link, and when it is detected that the RLF occurs on the first radio link and the RLF does not occur on the second radio link, the RRC connection reestablishment procedure triggered by the RLF occurring on the first radio link is abandoned.
  • the processor 410 determines whether there is a radio bearer on the first radio link, and determines that there is a radio on the first radio link. During the bearer, confirm whether the radio bearer on the first radio link switches to the second radio link within the first predetermined time, and then confirm that the radio bearer on the first radio link switches to the second radio within the first predetermined time. At the time of the link, the RRC connection re-establishment procedure triggered by the RLF of the first radio link is abandoned.
  • the method for processing a radio link failure of the present invention the user equipment, and the base station respectively detect the first radio after the UE establishes a first radio link with the first base station and a second radio link with the second base station, respectively. Whether the RLF occurs on the link and whether the RLF occurs on the second radio link. If the RLF occurs on the first radio link and the RLF does not occur on the second radio link, the UE abandons the RRC connection re-establishment triggered by the RLF occurring on the first radio link.
  • the process so as to reduce the unnecessary RRC connection re-establishment process when RLF occurs, can avoid wasteful use of radio resources and improve user experience.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • An integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a management server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

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

Abstract

L'invention concerne un procédé de gestion d'une défaillance de la liaison radio (RLF), un équipement d'utilisateur (UE), et une station de base. Le procédé de gestion comprend les étapes suivantes : un UE établit simultanément une première liaison radio avec une première station de base et une seconde liaison radio avec une seconde station de base; l'UE détecte si une RLF se produit sur la première liaison radio et sur la seconde liaison radio respectivement; et, si une RLF se produit sur la première liaison radio mais pas sur la seconde liaison radio, l'UE ne lance pas une opération de rétablissement d'une connexion de gestion des ressources radioélectriques (RRC) à cause de la RLF qui se produit sur la première liaison radio. La présente invention peut ainsi réduire les opérations de rétablissement d'une connexion RRC quand une RLF se produit, ce qui permet d'utiliser les ressources radio raisonnablement.
PCT/CN2013/082298 2013-08-26 2013-08-26 Procédé de gestion d'une défaillance de la liaison radio, équipement d'utilisateur, et station de base Ceased WO2015027381A1 (fr)

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PCT/CN2013/082298 WO2015027381A1 (fr) 2013-08-26 2013-08-26 Procédé de gestion d'une défaillance de la liaison radio, équipement d'utilisateur, et station de base
CN201380002700.8A CN104641683B (zh) 2013-08-26 2013-08-26 无线链路故障的处理方法、用户设备和基站

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