WO2019140646A1 - Procédé de traitement de transfert, dispositif de réseau, ue, et support de stockage informatique - Google Patents

Procédé de traitement de transfert, dispositif de réseau, ue, et support de stockage informatique Download PDF

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Publication number
WO2019140646A1
WO2019140646A1 PCT/CN2018/073459 CN2018073459W WO2019140646A1 WO 2019140646 A1 WO2019140646 A1 WO 2019140646A1 CN 2018073459 W CN2018073459 W CN 2018073459W WO 2019140646 A1 WO2019140646 A1 WO 2019140646A1
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Prior art keywords
handover
cell
threshold
network
different system
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PCT/CN2018/073459
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English (en)
Chinese (zh)
Inventor
刘建华
张治�
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Oppo广东移动通信有限公司
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Priority to CN201880037398.2A priority Critical patent/CN110710261B/zh
Priority to PCT/CN2018/073459 priority patent/WO2019140646A1/fr
Publication of WO2019140646A1 publication Critical patent/WO2019140646A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present invention relates to the field of information processing technologies, and in particular, to a handover processing method, a network device, a user equipment (UE), and a computer storage medium.
  • SRVCC Single Radio Voice Call Continuity
  • 3GPP 3rd Generation Partnership Project
  • It is mainly used to solve the problem of how to guarantee voice when a single radio UE moves between an LTE/Pre-LTE network and a 2G/3G CS network.
  • the problem of call continuity is to ensure smooth switching between IMS-controlled VoIP voice and CS domain voice by a single radio UE.
  • current 5G networks do not support SRVCC capabilities. Therefore, a solution is needed to solve the 5G network support for SRVCC.
  • an embodiment of the present invention provides a handover processing method, a network device, a user equipment (UE), and a computer storage medium.
  • a handover processing method provided by an embodiment of the present invention is applied to a first network device, where the method includes:
  • the user equipment UE when the user equipment UE is configured to perform the SRVCC handover capability indication, and/or determine that the UE performs the voice service on the 5G network, send configuration information to the UE, where the configuration information is used to trigger the UE to perform the different system. measuring;
  • a handover processing method is provided in the UE, where the method includes:
  • the measurement information is reported based on the trigger of the corresponding measurement event and reported to the network side.
  • a handover processing method is provided in the embodiment of the present invention, and is applied to a second network device, where the method includes:
  • the first communication unit sends the configuration information to the UE when receiving the SRVCC handover capability indication, and/or determining that the UE performs the voice service on the 5G network, where the configuration information is used to trigger the location Said UE performs heterogeneous system measurement;
  • the first processing unit receives the measurement information reported by the UE on the trigger of the corresponding measurement event, and determines, according to the measurement information, whether the UE performs the SRVCC handover when performing the voice service under the 5G network.
  • a UE is provided by the embodiment of the present invention, where the UE includes:
  • the measurement information is reported based on the trigger of the corresponding measurement event and reported to the network side.
  • a second network device where the second network device includes:
  • the third communication unit receives the relocation request sent by the AMF, where the relocation request is sent after the AMF receives the handover request sent by the access network, and the relocation request includes the base station of the 3G network. Identification information;
  • the third processing unit determines whether to perform the SRVCC handover based on the relocation request.
  • a first network device provided by an embodiment of the present invention includes: a processor and a memory for storing a computer program capable of running on a processor,
  • processor is configured to perform the steps of the foregoing method when the computer program is run.
  • a user equipment UE provided by an embodiment of the present invention includes: a processor and a memory for storing a computer program capable of running on the processor,
  • processor is configured to perform the steps of the foregoing method when the computer program is run.
  • a second network device provided by an embodiment of the present invention includes: a processor and a memory for storing a computer program capable of running on a processor,
  • processor is configured to perform the steps of the foregoing method when the computer program is run.
  • a computer storage medium is provided by the embodiment of the present invention.
  • the computer storage medium stores computer executable instructions, and the foregoing method steps are implemented when the computer executable instructions are executed.
  • the technical solution of the embodiment of the present invention when the UE has the SRVCC handover capability or the UE performs the voice service in the 5G network, triggers the UE to perform the inter-system measurement, and determines whether to control the UE to perform the SRVCC handover based on the measurement information of the inter-system measurement. In this way, it is possible to control the UE to perform SRVCC processing in the 5G network, and solve the problem that the current 5G network does not support the handover of the SRVCC.
  • FIG. 1 is a schematic flowchart 1 of a handover processing method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart 2 of a handover processing method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart 3 of a handover processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart 4 of a handover processing method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a first network device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a second network device according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a hardware architecture according to an embodiment of the present invention.
  • An embodiment of the present invention provides a handover processing method, which is applied to a first network device. As shown in FIG. 1, the method includes:
  • Step 101 Send the configuration information to the UE when receiving the SRVCC handover capability indication, and/or determining that the UE performs the voice service on the 5G network, where the configuration information is used to trigger the UE. Perform heterogeneous system measurements;
  • Step 102 Receive measurement information reported by the UE on the trigger of the corresponding measurement event, and determine, according to the measurement information, whether the UE performs SRVCC handover when performing voice service on the 5G network.
  • the voice service in the 5G network in this embodiment may be a VoNR voice service.
  • the first network device may be a device in the access network.
  • the gNB After the network side receives the UE SRVCC HO Capability Indicator and/or performs the VoNR voice service, the gNB sends an RRC Connection Reconfiguration to trigger the UE to measure the eNB and the NB signal respectively.
  • configuring the measurement event includes at least one of the following:
  • the signal strength of the neighboring cell of the different system exceeds the first threshold
  • the signal of the primary cell is lower than the second threshold, and the signal of the neighboring cell of the different system exceeds the third threshold;
  • the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher or lower than the fifth threshold.
  • the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding seventh threshold. And the signal strength of another adjacent system neighboring cell is higher or lower than the eighth threshold.
  • the measurement event may be any B event included in the prior art, that is, the following measurement events are sent for NR/LTE and NR/CDMA respectively, for example, may include:
  • the first event when the signal of the adjacent different system cell is higher than the corresponding first threshold, is reported, that is, Inter RAT neighbour becomes better than threshold;
  • the second event is reported when the signal strength of the primary cell is lower than the second threshold and the signal strength of the neighboring cell of the different system exceeds the third threshold; for example, PCell becomes worse than threshold1 and inter RAT neighbour becomes better Than threshold2.
  • the measurement event can introduce a new measurement event and report the signal strength of three different system cells.
  • it can include:
  • the first new event when at least two different system neighboring cells, the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher than or
  • the fifth threshold is lower than the fifth threshold, for example, Inter RAT-1 neighbor becomes better than threshold1, Inter RAT-2 neighbor becomes better/worse than threshold2, or vice versa;
  • the second newly added event when in the primary cell and in the at least two neighboring cells of the different system, the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding
  • the UE is triggered to report; for example, PCell becomes worse than threshold1 and Inter RAT-1 neighbor becomes better/ Worse than threshold2, and Inter RAT-2 neighbor becomes better/worse than threshold3.
  • thresholds may be set according to actual conditions, wherein they may all be the same or different, or may be at least partially identical.
  • the method when the determining whether the UE performs the SRVCC handover when performing the voice service on the 5G network, the method further includes: determining that the UE moves out the 5G when performing the voice service on the 5G network. Coverage.
  • the determining whether to perform the SRVCC handover includes:
  • the neighboring cell of the different system is a neighboring cell of the LTE system or a neighboring cell of the 3G system; and the at least two neighboring cells of the different system belong to at least two different systems.
  • the gNB determines to trigger the handover of the target cell.
  • the UE When the selected target cell is an LTE cell, the UE is triggered to perform an inter-system handover operation; when the selected target cell is a 3G cell, the UE is triggered to execute the SRVCC. That is to say, if it is determined that the handover to LTE is a 4G network, it can be understood as a different system handover processing; if it is determined to be switched from a 5G network to a 3G network, it is an SRVCC handover.
  • the method further includes: when receiving the SRVCC handover capability indication, and/or determining that the UE performs the voice service on the 5G network, acquiring the self-interference parameter reported by the UE; The self-interference parameter determines whether to trigger the SRVCC to handover the UE from the 5G cell to the 3G cell.
  • the self-interference problem is considered, that is, if the UE works at both NR and LTE.
  • the UE performs voice service on the NR after removing the NR coverage, it is necessary to consider the self-interference problem in the case of LTE dual-pass. If the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good.
  • sending configuration information to the UE includes: transmitting the configuration information by using RRC connection reconfiguration information. That is, when the UE performs VoNR voice on the NR, the RAN (first network device) sends a new parameter in the RRC Connection Reconfiguration, which indicates the self-interference of the UE.
  • the method further includes:
  • the indication parameter is sent in the configuration information, where the indication parameter is used to indicate that the UE reports the self-interference parameter together with the measurement event.
  • the first network device may instruct the UE to separately report the self-interference parameter, and may report the event together with the measurement event or may report the report separately.
  • the report event may be reported together with the first event or the second event. Reporting, of course, can also be reported together with the first new time or the second new event mentioned above.
  • the self-interference parameter when the UE has the first frequency band of the LTE operation before the handover and the second frequency band that works in the LTE after the handover occurs, estimating the first frequency band and the second frequency band
  • the self-interference parameter is based on the UE switching the first Band that has the existing LTE operation and the second Band that is estimated by the second Band of the newly added LTE operation after the handover, and the interference generated by the two channels simultaneously for the data transmission is performed. Impact of throughput, latency, and success rate.
  • the method may further include:
  • the handover request is generated and sent to the core network based on the identity of the base station of the target 3G cell in the SRVCC handover; wherein the handover request is used to make the core network according to the target in the handover request
  • the identity of the base station of the 3G cell and the corresponding reconfiguration request determine that the performed handover operation is an SRVCC handover.
  • the first network device provided in this embodiment may be an NG-RAN (ie, a next-generation radio access network device) in the figure; after receiving the measurement report sent by the UE, performing the foregoing series of processes. And then determining to perform the SRVCC; then, transmitting a handover request to the core network (specifically, AMF), and then the AMF sends a relocation request to the MME; the MME determines whether the location information is based on the relocation request and the identification information of the 3G base station in the handover request The SRVCC handover is performed.
  • AMF core network
  • the MME also performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing flow existing in the prior art, but this implementation is only this implementation.
  • the core network and the access network complete the SRVCC handover preparation operation.
  • the relocation response information is sent to the AMF, and the AMF sends a handover instruction to the access network RAN.
  • the entire system performs SRVCC processing.
  • the UE when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and it is determined whether to control the UE to perform the SRVCC handover based on the measurement information of the inter-system measurement. In this way, it is possible to control the UE to perform SRVCC processing in the 5G network, and solve the problem that the current 5G network does not support the handover of the SRVCC.
  • the embodiment of the present invention provides a handover processing method, which is applied to a UE. As shown in FIG. 3, the method includes:
  • Step 301 Send an indication that the SRVCC handover capability is available to the network side, and/or, when the UE performs the voice service on the 5G network, receive configuration information sent by the network side, where the configuration information is used to trigger the UE to perform different System measurement
  • Step 302 When performing the measurement of the different system, the measurement information is reported based on the trigger of the corresponding measurement event and reported to the network side.
  • the voice service in the 5G network in this embodiment may be a VoNR voice service.
  • the first network device may be a device in the access network.
  • the gNB After the network side receives the UE SRVCC HO Capability Indicator and/or performs the VoNR voice service, the gNB sends an RRC Connection Reconfiguration to trigger the UE to measure the eNB and the NB signal respectively.
  • configuring the measurement event includes at least one of the following:
  • the signal strength of the neighboring cell of the different system exceeds the first threshold
  • the signal of the primary cell is lower than the second threshold, and the signal of the neighboring cell of the different system exceeds the third threshold;
  • the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher or lower than the fifth threshold.
  • the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding seventh threshold. And the signal strength of another adjacent system neighboring cell is higher or lower than the eighth threshold.
  • the measurement event may be any B event included in the prior art, that is, the following measurement events are sent for NR/LTE and NR/CDMA respectively, for example, may include:
  • the first event when the signal of the adjacent different system cell is higher than the corresponding first threshold, is reported, that is, Inter RAT neighbour becomes better than threshold;
  • the second event is reported when the signal strength of the primary cell is lower than the second threshold and the signal strength of the neighboring cell of the different system exceeds the third threshold; for example, PCell becomes worse than threshold1 and inter RAT neighbour becomes better Than threshold2.
  • the measurement event can introduce a new measurement event and report the signal strength of three different system cells.
  • it can include:
  • the first new event when at least two different system neighboring cells, the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher than or
  • the fifth threshold is lower than the fifth threshold, for example, Inter RAT-1 neighbor becomes better than threshold1, Inter RAT-2 neighbor becomes better/worse than threshold2, or vice versa;
  • the second newly added event when in the primary cell and in the at least two neighboring cells of the different system, the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding
  • the UE is triggered to report; for example, PCell becomes worse than threshold1 and Inter RAT-1 neighbor becomes better /worse than threshold2, and Inter RAT-2 neighbor becomes better/worse than threshold3.
  • the method further includes: obtaining an indication parameter that is sent by the network side by using the configuration information, where the indication parameter is used to instruct the UE to report the self-interference parameter together with the measurement event.
  • the self-interference parameter when the UE has the first frequency band of the LTE operation before the handover and the second frequency band that works in the LTE after the handover occurs, estimating the first frequency band and the second frequency band
  • the self-interference parameter is based on the UE switching the first Band that has the existing LTE operation and the second Band that is estimated by the second Band of the newly added LTE operation after the handover, and the interference generated by the two channels simultaneously for the data transmission is performed. Impact of throughput, latency, and success rate.
  • the self-interference problem is considered, that is, if the UE works at both NR and LTE.
  • the UE performs voice service on the NR after removing the NR coverage, it is necessary to consider the self-interference problem in the case of LTE dual-pass. If the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good.
  • sending configuration information to the UE includes: transmitting the configuration information by using RRC connection reconfiguration information. That is, when the UE performs VoNR voice on the NR, the RAN (first network device) sends a new parameter in the RRC Connection Reconfiguration, which indicates the self-interference of the UE.
  • the method may further include:
  • the handover request is generated and sent to the core network based on the identity of the base station of the target 3G cell in the SRVCC handover; wherein the handover request is used to make the core network according to the target in the handover request
  • the identity of the base station of the 3G cell and the corresponding reconfiguration request determine that the performed handover operation is an SRVCC handover.
  • the first network device provided in this embodiment may be an NG-RAN (ie, a next-generation radio access network device) in the figure; after receiving the measurement report sent by the UE, performing the foregoing series of processes. And then determining to perform SRVCC; then, sending a handover request to the core network (specifically AMF), and then the AMF sends a relocation request to the MME; at this time, the MME also performs SM context acquisition with the SMF/PGW-C in the core network, and Response processing (not shown in the figure, but is a processing flow existing in the prior art, but is not described in this embodiment); after completion, the core network and the access network complete the SRVCC switching preparation operation; After the handover preparation, the relocation response information is sent to the AMF, and the AMF sends a handover instruction to the access network RAN. Finally, the entire system performs SRVCC processing.
  • NG-RAN ie, a next-generation radio access network device
  • the UE when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and it is determined whether to control the UE to perform the SRVCC handover based on the measurement information of the inter-system measurement. In this way, it is possible to control the UE to perform SRVCC processing in the 5G network, and solve the problem that the current 5G network does not support the handover of the SRVCC.
  • An embodiment of the present invention provides a handover processing method, which is applied to a second network device. As shown in FIG. 4, the method includes:
  • Step 401 Receive a relocation request sent by the AMF, where the relocation request is sent after the AMF receives the handover request sent by the access network, and the relocation request includes the base station identification information of the 3G network. ;
  • Step 402 Determine whether to perform SRVCC handover based on the relocation request.
  • the handover preparation operation of the SRVCC is completed.
  • the relocation response information is sent to the AMF, so that the AMF sends a handover instruction to the access network RAN; and performs SRVCC processing.
  • the embodiment may refer to FIG. 2, and specifically includes: the first network device may be an NG-RAN (ie, a next-generation radio access network device) in the figure; after receiving the measurement report sent by the UE, performing the foregoing series of processes. And then determining to perform the SRVCC; then, transmitting a handover request to the core network (specifically, AMF), and then the AMF sends a relocation request to the MME; the MME determines whether the location information is based on the relocation request and the identification information of the 3G base station in the handover request The SRVCC handover is performed.
  • the core network specifically, AMF
  • the MME performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing flow existing in the prior art, but this implementation is only this implementation.
  • the core network and the access network complete the SRVCC handover preparation operation.
  • the relocation response information is sent to the AMF, and the AMF sends a handover instruction to the access network RAN.
  • the entire system performs SRVCC processing.
  • the UE when the UE has the SRVCC handover capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and the SRVCC handover is determined to be performed based on the measurement information of the inter-system measurement.
  • the UE it is possible to control the UE to perform SRVCC processing in the 5G network, and solve the problem that the current 5G network does not support the handover of the SRVCC.
  • An embodiment of the present invention provides a first network device. As shown in FIG. 5, the method includes:
  • the first communication unit 51 when receiving the SRVCC handover capability indication by the user equipment UE, and/or determining that the UE performs the voice service under the 5G network, sending configuration information to the UE; wherein the configuration information is used to trigger Performing different system measurement by the UE;
  • the first processing unit 52 receives the measurement information reported by the UE on the trigger of the corresponding measurement event, and determines whether the UE performs the SRVCC handover when performing the voice service on the 5G network based on the measurement information.
  • the voice service in the 5G network in this embodiment may be a VoNR voice service.
  • the first network device may be a device in the access network.
  • the gNB After the network side receives the UE SRVCC HO Capability Indicator and/or performs the VoNR voice service, the gNB sends an RRC Connection Reconfiguration to trigger the UE to measure the eNB and the NB signal respectively.
  • configuring the measurement event includes at least one of the following:
  • the signal strength of the neighboring cell of the different system exceeds the first threshold
  • the signal of the primary cell is lower than the second threshold, and the signal of the neighboring cell of the different system exceeds the third threshold;
  • the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher or lower than the fifth threshold.
  • the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding seventh threshold. And the signal strength of another adjacent system neighboring cell is higher or lower than the eighth threshold.
  • the measurement event may be any B event included in the prior art, that is, the following measurement events are sent for NR/LTE and NR/CDMA respectively, for example, may include:
  • the first event when the signal of the adjacent different system cell is higher than the corresponding first threshold, is reported, that is, Inter RAT neighbour becomes better than threshold;
  • the second event is reported when the signal strength of the primary cell is lower than the second threshold and the signal strength of the neighboring cell of the different system exceeds the third threshold; for example, PCell becomes worse than threshold1 and inter RAT neighbour becomes better Than threshold2.
  • the measurement event can introduce a new measurement event and report the signal strength of three different system cells.
  • it can include:
  • the first new event when at least two different system neighboring cells, the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher than or
  • the fifth threshold is lower than the fifth threshold, for example, Inter RAT-1 neighbor becomes better than threshold1, Inter RAT-2 neighbor becomes better/worse than threshold2, or vice versa;
  • the second newly added event when in the primary cell and in the at least two neighboring cells of the different system, the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding
  • the UE is triggered to report; for example, PCell becomes worse than threshold1 and Inter RAT-1 neighbor becomes better /worse than threshold2, and Inter RAT-2 neighbor becomes better/worse than threshold3.
  • thresholds may be set according to actual conditions, wherein they may all be the same or different, or may be at least partially identical.
  • the method when the determining whether the UE performs the SRVCC handover when performing the voice service on the 5G network, the method further includes: determining that the UE moves out the 5G when performing the voice service on the 5G network. Coverage.
  • the first processing unit 52 when determining, according to the measurement information, that the current 5G cell signal is lower than a corresponding threshold,
  • the neighboring cell of the different system is a neighboring cell of the LTE system or a neighboring cell of the 3G system; and the at least two neighboring cells of the different system belong to at least two different systems.
  • the gNB determines to trigger the handover of the target cell.
  • the UE When the selected target cell is an LTE cell, the UE is triggered to perform an inter-system handover operation; when the selected target cell is a 3G cell, the UE is triggered to execute the SRVCC. That is to say, if it is determined that the handover to LTE is a 4G network, it can be understood as an exclusive system handover process; if it is determined to be switched from a 5G network to a 3G network, it is an SRVCC handover.
  • the method further includes: when receiving the SRVCC handover capability indication, and/or determining that the UE performs the voice service on the 5G network, acquiring the self-interference parameter reported by the UE; The self-interference parameter determines whether to trigger the SRVCC to handover the UE from the 5G cell to the 3G cell.
  • the self-interference problem is considered, that is, if the UE works at both NR and LTE.
  • the UE performs voice service on the NR after removing the NR coverage, it is necessary to consider the self-interference problem in the case of LTE dual-pass. If the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good.
  • the first communication unit transmits the configuration information through the RRC connection reconfiguration information. That is, when the UE performs VoNR voice on the NR, the RAN (first network device) sends a new parameter in the RRC Connection Reconfiguration, which indicates the self-interference of the UE.
  • the first communication unit sends an indication parameter to the configuration information, where the indication parameter is used to indicate that the UE reports the self-interference parameter together with the measurement event.
  • the first network device may instruct the UE to separately report the self-interference parameter, and may report the event together with the measurement event or may report the report separately.
  • the report event may be reported together with the first event or the second event. Reporting, of course, can also be reported together with the first new time or the second new event mentioned above.
  • the self-interference parameter when the UE has the first frequency band of the LTE operation before the handover and the second frequency band that works in the LTE after the handover occurs, estimating the first frequency band and the second frequency band
  • the self-interference parameter is based on the UE switching the first Band that has the existing LTE operation and the second Band that is estimated by the second Band of the newly added LTE operation after the handover, and the interference generated by the two channels simultaneously for the data transmission is performed. Impact of throughput, latency, and success rate.
  • the first processing unit when determining to perform the SRVCC handover, generates a handover request to the core network based on the identifier of the base station of the target 3G cell in the SRVCC handover; wherein the handover request is used to make the handover
  • the core network determines, according to the identifier of the base station of the target 3G cell in the handover request, and the corresponding reconfiguration request, that the performed handover operation is an SRVCC handover.
  • the first network device provided in this embodiment may be an NG-RAN (ie, a next-generation radio access network device) in the figure; after receiving the measurement report sent by the UE, performing the foregoing series of processes. And then determining to perform the SRVCC; then, transmitting a handover request to the core network (specifically, AMF), and then the AMF sends a relocation request to the MME; the MME determines whether the location information is based on the relocation request and the identification information of the 3G base station in the handover request The SRVCC handover is performed.
  • AMF core network
  • the MME performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing flow existing in the prior art, but this implementation is only this implementation.
  • the core network and the access network complete the SRVCC handover preparation operation.
  • the relocation response information is sent to the AMF, and the AMF sends a handover instruction to the access network RAN.
  • the entire system performs SRVCC processing.
  • the UE when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and it is determined whether to control the UE to perform the SRVCC handover based on the measurement information of the inter-system measurement. In this way, it is possible to control the UE to perform SRVCC processing in the 5G network, and solve the problem that the current 5G network does not support the handover of the SRVCC.
  • An embodiment of the present invention provides a UE, including:
  • the measurement information is reported based on the trigger of the corresponding measurement event and reported to the network side.
  • the voice service in the 5G network in this embodiment may be a VoNR voice service.
  • the first network device may be a device in the access network.
  • the gNB After the network side receives the UE SRVCC HO Capability Indicator and/or performs the VoNR voice service, the gNB sends an RRC Connection Reconfiguration to trigger the UE to measure the eNB and the NB signal respectively.
  • configuring the measurement event includes at least one of the following:
  • the signal strength of the neighboring cell of the different system exceeds the first threshold
  • the signal of the primary cell is lower than the second threshold, and the signal of the neighboring cell of the different system exceeds the third threshold;
  • the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher or lower than the fifth threshold.
  • the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding seventh threshold. And the signal strength of another adjacent system neighboring cell is higher or lower than the eighth threshold.
  • the measurement event may be any B event included in the prior art, that is, the following measurement events are sent for NR/LTE and NR/CDMA respectively, for example, may include:
  • the first event when the signal of the adjacent different system cell is higher than the corresponding first threshold, is reported, that is, Inter RAT neighbour becomes better than threshold;
  • the second event is reported when the signal strength of the primary cell is lower than the second threshold and the signal strength of the neighboring cell of the different system exceeds the third threshold; for example, PCell becomes worse than threshold1 and inter RAT neighbour becomes better Than threshold2.
  • the measurement event can introduce a new measurement event and report the signal strength of three different system cells.
  • it can include:
  • the first new event when at least two different system neighboring cells, the signal strength of one different system neighboring cell exceeds the corresponding fourth threshold phase, and the signal strength of another different system neighboring cell is higher than or
  • the fifth threshold is lower than the fifth threshold, for example, Inter RAT-1 neighbor becomes better than threshold1, Inter RAT-2 neighbor becomes better/worse than threshold2, or vice versa;
  • the second newly added event when in the primary cell and in the at least two neighboring cells of the different system, the signal strength of the primary cell is lower than the sixth threshold, and the signal strength of the neighboring cell of a different system is higher or lower than the corresponding
  • the UE is triggered to report; for example, PCell becomes worse than threshold1 and Inter RAT-1 neighbor becomes better /worse than threshold2, and Inter RAT-2 neighbor becomes better/worse than threshold3.
  • the second communication unit acquires an indication parameter that is sent by the network side by using the configuration information, where the indication parameter is used to indicate that the UE reports the self-interference parameter together with the measurement event.
  • the self-interference parameter when the UE has the first frequency band of the LTE operation before the handover and the second frequency band that works in the LTE after the handover occurs, estimating the first frequency band and the second frequency band
  • the self-interference parameter is based on the UE switching the first Band that has the existing LTE operation and the second Band that is estimated by the second Band of the newly added LTE operation after the handover, and the interference generated by the two channels simultaneously for the data transmission is performed. Impact of throughput, latency, and success rate.
  • the self-interference problem is considered, that is, if the UE works at both NR and LTE.
  • the UE performs voice service on the NR after removing the NR coverage, it is necessary to consider the self-interference problem in the case of LTE dual-pass. If the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good.
  • sending configuration information to the UE includes: transmitting the configuration information by using RRC connection reconfiguration information. That is, when the UE performs VoNR voice on the NR, the RAN (first network device) sends a new parameter in the RRC Connection Reconfiguration, which indicates the self-interference of the UE.
  • the second communication unit when determining to perform the SRVCC handover, generates a handover request to the core network based on the identity of the base station of the target 3G cell in the SRVCC handover; wherein the handover request is used to cause the core
  • the network determines, according to the identifier of the base station of the target 3G cell in the handover request, and the corresponding reconfiguration request, that the performed handover operation is an SRVCC handover.
  • the first network device provided in this embodiment may be an NG-RAN (ie, a next-generation radio access network device) in the figure; after receiving the measurement report sent by the UE, performing the foregoing series of processes. And then determining to perform SRVCC; then, sending a handover request to the core network (specifically AMF), and then the AMF sends a relocation request to the MME; at this time, the MME also performs SM context acquisition with the SMF/PGW-C in the core network, and Response processing (not shown in the figure, but is a processing flow existing in the prior art, but is not described in this embodiment); after completion, the core network and the access network complete the SRVCC switching preparation operation; After the handover preparation, the relocation response information is sent to the AMF, and the AMF sends a handover instruction to the access network RAN. Finally, the entire system performs SRVCC processing.
  • NG-RAN ie, a next-generation radio access network device
  • the UE when the UE has the SRVCC handover capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and based on the measurement information of the inter-system measurement, it is determined whether to control the UE to perform the SRVCC handover.
  • the UE it is possible to control the UE to perform SRVCC processing in the 5G network, and solve the problem that the current 5G network does not support the handover of the SRVCC.
  • An embodiment of the present invention provides a second network device, as shown in FIG. 6, including:
  • the third communication unit 61 receives the relocation request sent by the AMF, where the relocation request is sent after the AMF receives the handover request sent by the access network, and the relocation request includes the 3G network.
  • Base station identification information ;
  • the third processing unit 62 determines whether to perform SRVCC switching based on the relocation request.
  • the third processing unit 62 upon determining to perform the SRVCC handover, completes the handover preparation operation of the SRVCC. After the SRVCC handover preparation operation is completed, the relocation response information is sent to the AMF through the third communication unit, so that the AMF sends a handover instruction to the access network RAN; and performs SRVCC processing.
  • the embodiment may refer to FIG. 2, and specifically includes: the first network device may be an NG-RAN (ie, a next-generation radio access network device) in the figure; after receiving the measurement report sent by the UE, performing the foregoing series of processes. And then determining to perform the SRVCC; then, transmitting a handover request to the core network (specifically, AMF), and then the AMF sends a relocation request to the MME; the MME determines whether the location information is based on the relocation request and the identification information of the 3G base station in the handover request The SRVCC handover is performed.
  • the core network specifically, AMF
  • the MME performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing flow existing in the prior art, but this implementation is only this implementation.
  • the core network and the access network complete the SRVCC handover preparation operation.
  • the relocation response information is sent to the AMF, and the AMF sends a handover instruction to the access network RAN.
  • the entire system performs SRVCC processing.
  • the UE when the UE has the SRVCC handover capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and the SRVCC handover is determined to be performed based on the measurement information of the inter-system measurement.
  • the UE it is possible to control the UE to perform SRVCC processing in the 5G network, and solve the problem that the current 5G network does not support the handover of the SRVCC.
  • the embodiment of the present invention further provides a hardware component architecture of the user equipment or the network device.
  • the method includes at least one processor 71, a memory 72, and at least one network interface 73.
  • the various components are coupled together by a bus system 74.
  • bus system 74 is used to implement connection communication between these components.
  • the bus system 74 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 74 in FIG.
  • the memory 72 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • memory 72 stores elements, executable modules or data structures, or a subset thereof, or their extension set:
  • the processor 71 is configured to be able to process the method steps of any one of the foregoing embodiments 1 to 3, and details are not described herein.
  • the embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, and when the computer executable instructions are executed, the method steps of any one of the foregoing embodiments 1 to 3 are implemented.
  • Embodiments of the Invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • embodiments of the invention are not limited to any specific combination of hardware and software.
  • an embodiment of the present invention further provides a computer storage medium, wherein a computer program is configured, and the computer program is configured to execute a data scheduling method according to an embodiment of the present invention.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne un procédé de traitement de transfert, un dispositif de réseau, un équipement d'utilisateur (UE), et un support de stockage informatique. Le procédé comporte les étapes consistant à: envoyer des informations de configuration à un UE lorsqu'une indication d'aptitude au transfert de SRVCC émise par l'UE est reçue et/ou lorsqu'il est déterminé que l'UE réalise un service vocal sur un réseau 5G, les informations de configuration étant utilisées pour déclencher la réalisation par l'UE d'une mesure inter-système; et recevoir des informations de mesure rapportées au moyen du déclenchement de l'UE dans un événement de mesure correspondant, et déterminer, selon les informations de mesure, s'il convient d'effectuer un transfert de SRVCC lorsque l'UE réalise le service vocal sur le réseau 5G.
PCT/CN2018/073459 2018-01-19 2018-01-19 Procédé de traitement de transfert, dispositif de réseau, ue, et support de stockage informatique WO2019140646A1 (fr)

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