WO2018040103A1 - 一种语音切换的方法、终端以及存储介质 - Google Patents

一种语音切换的方法、终端以及存储介质 Download PDF

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Publication number
WO2018040103A1
WO2018040103A1 PCT/CN2016/098113 CN2016098113W WO2018040103A1 WO 2018040103 A1 WO2018040103 A1 WO 2018040103A1 CN 2016098113 W CN2016098113 W CN 2016098113W WO 2018040103 A1 WO2018040103 A1 WO 2018040103A1
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WIPO (PCT)
Prior art keywords
terminal
base station
configuration information
signal strength
measurement configuration
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Application number
PCT/CN2016/098113
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English (en)
French (fr)
Inventor
姜印清
柳晓见
周佐华
沈丽
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/098113 priority Critical patent/WO2018040103A1/zh
Priority to CN201680074805.8A priority patent/CN108476453A/zh
Publication of WO2018040103A1 publication Critical patent/WO2018040103A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

Definitions

  • the present invention relates to the field of network voice, and in particular, to a voice switching method and terminal based on Long Term Evolution (LTE) network voice technology.
  • LTE Long Term Evolution
  • VoLTE Voice over LTE
  • SRLTE Single Radio LTE
  • CSFB circuit switched fallback
  • LTE-based networks Voice (Voice over LTE, VoLTE).
  • SVLTE/SRTLE is suitable for telecommunication terminals
  • LTE provides data services
  • 2G provides voice call services.
  • CSFB is suitable for mobile or Unicom terminals, including most overseas operators.
  • LTE only provides data services. When it initiates or accepts a voice call, it falls back to 2G/3G for processing.
  • VoLTE is an IP Multimedia Subsystem (IMS)-based voice service. It is an Internet Protocol (IP) data transmission technology. It does not require a 2G/3G network. All services are carried on a 4G network, enabling data services. The unification of voice services under the same network.
  • IMS IP Multimedia Subsystem
  • SRVCC Single Radio Voice Call Continuity
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • 2G Global System for Mobile Communications
  • GSM Global System for Mobile Communication
  • the SRVCC handover of the VoLTE voice service does not take into account the fact that when the LTE signal is poor, the SRVCC switching is slow due to terminal measurement and the like, causing the dropped line; nor when the LTE signal is good, The situation of dropped calls due to poor voice performance due to network congestion.
  • the invention provides a method and a terminal for voice switching, which reduces voice call drop caused by network congestion.
  • an embodiment of the present invention provides a method for voice switching, where the method includes:
  • the terminal requests the measurement configuration information from the base station; the terminal measures the signal strength and the signal quality of the neighboring frequency point according to the measurement configuration information, where the measurement configuration information includes the neighboring frequency point information; then, the The terminal sends a measurement report to the base station, where the measurement report includes a first frequency point of the neighboring cell; a signal strength of the first frequency point of the neighboring area is greater than a preset signal strength threshold; and a signal of the first frequency point of the neighboring area The quality is better than the preset signal quality threshold.
  • the base station determines whether to perform the SRVCC handover according to the measurement report sent by the terminal. When determining the SRVCC handover, the base station sends an indication to the terminal, and the terminal performs the SRVCC handover according to the indication of the base station.
  • the terminal actively triggers SRVCC switching, which reduces the number of voice calls caused by network congestion.
  • the terminal when the error block rate of the voice data is higher than a preset threshold, the terminal requests measurement configuration information from the base station.
  • the terminal when any one of an access delay, a network jitter, and a packet loss rate meets a preset condition, the terminal requests measurement from the base station Configuration information.
  • the weighting value is determined according to an access delay, a network jitter, a packet loss rate, and an LTE signal strength; when the weighted value satisfies a preset condition
  • the terminal requests measurement configuration information from the base station.
  • the terminal uses a discontinuous reception (DRX) sleep period, according to Measuring configuration information, measuring signal strength and signal quality of the neighboring frequency points.
  • DRX discontinuous reception
  • an embodiment of the present invention provides a terminal, where the terminal includes a sending unit, a measuring unit, and an executing unit.
  • the first aspect and the foregoing may be referred to due to the principle and beneficial effects of the terminal in solving the problem.
  • the possible implementations on the one hand and the beneficial effects brought about by the implementation, therefore, the implementation of the terminal can refer to the implementation of the method, and the repeated description will not be repeated.
  • an embodiment of the present invention provides a terminal, where the terminal includes a transmitter, a receiver, a processor, and a memory, where the transmitter and the receiver are configured to complete data transmission and reception to an external device, and the memory is configured to store
  • the computer executable program code comprising instructions, when the processor executes the instruction, implements the solution in the method design of the first aspect, and the implementation manner and the beneficial effects of the terminal solving the problem can be referred to the above
  • the first aspect and the possible implementation manners and the beneficial effects of the first aspect, and therefore the implementation of the terminal can refer to the implementation of the method in the first aspect, and the repeated description is not repeated.
  • an embodiment of the present invention provides a computer storage medium, where the storage medium is a non-volatile computer readable storage medium, where the non-volatile computer readable storage medium stores at least one program, each The program includes the computer software instructions involved in the method design of the first aspect described above, and when the instruction is executed by a terminal having a processor, a transmitter, a receiver, and a memory, causing the terminal to perform the first aspect and the first A possible voice switching processing method on the one hand.
  • the method and terminal for voice switching provided by the present invention trigger different system measurement by the block error rate of data, and reduce the number of voice call drops caused by network congestion.
  • Embodiments of the present invention provide a voice switching method, a terminal device, and a storage medium, which are The error block rate of the voice data is higher than a preset threshold, and any one of the access delay, the network jitter, and the packet loss rate satisfies a preset condition, and/or when the packet is delayed according to the access delay, the network jitter, or the packet loss
  • the terminal requests measurement configuration information from the base station; the terminal measures signal strength and signal quality of the neighbor frequency point according to the measurement configuration information, the measurement
  • the configuration information includes the neighboring frequency point information; the terminal sends a measurement report to the base station, where the measurement report includes a first frequency point of the neighboring area; and the signal strength of the first frequency point of the neighboring area is greater than a preset a signal strength threshold; the signal quality of the first frequency point of the neighboring area is better than a preset signal quality threshold; and the terminal performs SRVCC
  • FIG. 1 is a schematic structural diagram of a network system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for voice switching according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for voice switching according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another terminal according to an embodiment of the present invention.
  • the embodiments of the present invention provide a method and a terminal for voice switching, which are applicable to an application scenario of a network handover caused by an LTE network, a 3G network, and a 2G network coverage boundary, and the LTE network signal is weak, or the network load is balanced.
  • FIG. 1 is a schematic structural diagram of a network system according to an embodiment of the present invention.
  • a network architecture for switching from a 4G network to a 2G/3G network SRVCC is exemplified in conjunction with FIG.
  • the network architecture 100 may include a terminal 110, a base station 120 of a network where the terminal 110 is pre-switched, a Mobility Management Entity (MME) 130, a Serving Gateway (SGW), or A packet data gateway (PDN gateway) 140, an SRVCC interworking function (IWF) device 150, a mobile switching center (MSC) 160, and a GPRS of the network where the terminal 110 is located after the voice switching.
  • MME Mobility Management Entity
  • SGW Serving Gateway
  • PDN gateway packet data gateway
  • IWF packet data gateway
  • MSC mobile switching center
  • GPRS mobile switching center
  • the SRVCC IWF device 150 is a network functional entity for providing interconnection, and may be part of one or more logical or physical entities in the network.
  • Each device in the network system communicates with each other to complete voice switching and corresponding communication.
  • the terminal 110 determines a voice data block error rate of the LTE network of the serving cell, and sends a trigger event message requesting measurement configuration information to the base station 120 when the block error rate satisfies the event trigger condition.
  • the base station 120 receives the trigger event message and transmits measurement configuration information to the terminal 110.
  • the measurement configuration information includes a neighboring cell list, the neighboring cell list includes neighboring cell frequency information, and the neighboring cell frequency is preferably a non-4G network frequency, for example, a 2G/3G network frequency.
  • the terminal receives the measurement configuration information and determines the signal strength and signal quality of the neighboring frequency.
  • the signal strength can be determined by measuring reference signal receiving power (RSRP).
  • the signal quality can be determined by measuring a reference signal receiving quality (RSRQ).
  • the signal strength and signal quality of the neighboring frequency points are transmitted to the base station 120.
  • the terminal determines whether the signal strength of the neighboring frequency point is greater than the preset signal strength, and/or determines whether the signal quality of the neighboring frequency point is better than the preset signal quality.
  • the terminal transmits a measurement report to the base station 120.
  • the measurement report includes the first frequency point information of the neighboring area, the signal quality of the first frequency point of the neighboring area, and the signal strength of the first frequency point of the neighboring area.
  • the base station 120 determines whether to perform SRVCC switching according to the signal strength and signal quality of the neighboring frequency point sent by the terminal. When the signal strength of the neighboring frequency point is higher than the preset signal strength threshold, the signal quality of the adjacent frequency point is superior to the signal quality gate. After the time limit is determined, the SRVCC handover is determined, that is, the voice service of the terminal is switched from the LTE network to the 2G/3G network.
  • the MME 130, the SRVCC IWF device 150, and the target MSC 160 send a handover request message to the target RNS/BSS 180 to complete the CS domain air interface resource allocation, and notify the target MSC 160, the target RNS/BSS 180, and the SRVCC.
  • the IWF device 150 completes the CS domain air interface resource allocation, so that the SRVCC IWF device 150 completes the circuit connection with the target MSC 160; after establishing the circuit connection, the SRVCC IWF device 150 initiates a session to the IMS 190 and sends a handover response to the MME 130; the MME 130 accesses
  • the device 120 sends a handover instruction to the terminal 110, and the terminal 110 performs SRVCC handover according to the handover instruction, that is, switches the voice service from the LTE network to the 3G or 2G network.
  • the terminal 110 determines the error rate of the voice data of the LTE network of the serving cell, and the error block rate satisfies the event triggering condition, specifically: the terminal analyzes the physical hybrid automatic retransmission indicator channel (Physical Hybrid ARQ Indicator). Channel, PHICH), obtaining uplink data in the n*T time, determining the block error rate of the acquired uplink data, and determining whether the block error rate of the uplink data is higher than a preset threshold (first preset threshold) A, when When the block error rate of the uplink data is higher than the preset threshold A, it is determined that the block error rate satisfies the event trigger condition.
  • T is the sampling window time
  • n is a positive integer.
  • the terminal 110 determines the error rate of the voice data of the LTE network of the serving cell.
  • the terminal specifically determines that the terminal obtains the n*T by analyzing the physical downlink shared channel (PDSCH).
  • the downlink data in the time is determined, and the block error rate of the obtained downlink data is determined, and it is determined whether the block error rate of the downlink data is higher than a preset threshold (second preset threshold) B.
  • a preset threshold second preset threshold
  • the terminal 110 may also trigger the base station 120 to send measurement configuration information according to the LTE network data communication performance indicator of the serving cell.
  • the terminal 110 sends a trigger event message to the base station 120, and the base station 120 is triggered to send the measurement configuration information to the terminal.
  • the LTE network data communication performance indicator may include information such as access delay information, network jitter information, and packet loss rate.
  • the measurement configuration information may include information that the terminal 110 needs to measure, a neighbor list, a report mode, a measurement identifier, and a time parameter.
  • the terminal 110 determines the RSRP and RSRQ of the neighbor frequency based on the measurement configuration information. .
  • the terminal 110 determines whether the measured RSRP and RSRQ satisfy the preset event trigger condition.
  • the terminal transmits the RSRP and the RSRQ to the base station 120.
  • the terminal sends the RSRP and the RSRQ to the base station 120 in the form of a measurement report.
  • FIG. 2 is a flowchart of a method for voice switching according to an embodiment of the present invention
  • the base station 120 receives measurement results of RSRP and RSRQ of a neighboring frequency point sent by a terminal, and determines whether the measurement result meets a preset condition.
  • the preset condition is that the measured signal strength of the neighboring frequency point is higher than the preset signal strength threshold, and the signal quality of the adjacent frequency point is better than the preset signal quality threshold; when the measurement result satisfies the preset condition, Initiate an SRVCC switch. That is, the base station 120 sends a handover request message to the MME 130.
  • the handover request message includes a target identifier (target ID) of the SRVCC Interworking Function (IWF) device 150, and indicates that the handover is an SRVCC handover.
  • target ID target identifier
  • IWF Interworking Function
  • STN-SR Session Transfer Number for SRVCC
  • MSISDN Mobile Station International ISDN
  • MSISDN Mobile Subscriber International ISDN
  • MM context where the
  • the SRVCC IWF device 150 sends a Prepare Handover Request message to the MSC corresponding to the identifier of the target MSC 160 in the PS-CS handover request message, which is similar to the handover between the traditional MSC, and is not concise here. Let me repeat.
  • the target MSC 160 sends a handover request message (Handover Response) to the target RNS/BSS 180, so that the target RNS/BSS 180 completes the allocation of the CS domain air interface resource, and the process is similar to the switching between the traditional MSC, and is not described here. .
  • the target RNS/BSS 180 After the target RNS/BSS 180 completes the allocation of the air interface resources, it sends a response message to the target MSC 160 to indicate that the air interface resource allocation is completed.
  • the target MSC 160 transmits a Prepare Handover Response message to the SRVCC IWF device 150 according to the response message sent by the target RNS/BSS 180, and the SRVCC IWF device 150 establishes a circuit connection (ISUP IAM, ACM) with the target MSC 160.
  • the SRVCC IWF device 150 initiates an initial session transfer (IST) process to the IMS 190.
  • the called number is STN-SR
  • the calling number is MSISDN
  • the signaling may be an ISDN User Part (ISUP). If it is ISUP, it must pass the Media Gateway Control Function (MGCF).
  • MGCF Media Gateway Control Function
  • the SRVCC IWF device 150 forwards a PS-CS handover response message to the MME 130, the PS-CS handover response message indicating that the target air interface resource is ready.
  • the MME 130 After receiving the PS-CS handover response message, the MME 130 sends a handover instruction to the terminal 110 through the base station 120 to instruct the terminal to switch the voice service from the LTE network to the 2G/3G network.
  • the terminal 110 switches to the UTRAN or GERAN, and the BSS 180 completes the handover detection.
  • the handover completion information (Handover Complete) is sent to the target MSC 160 to instruct the terminal 110 to complete the handover, and the target MSC 160 transmits the handover completion information and the ISUP ANM to the SRVCC IWF device 150.
  • the SRVCC IWF device 150 transmits handover complete information to the MME 130 and initiates an implicit location update to the HLR to act as a controlling MSC for legacy CS domain handover.
  • the measurement result sent by the terminal to the base station may also carry network data communication performance indicators of multiple neighboring frequency points, so that the base station determines whether to initiate SRVCC handover.
  • the base station determines, according to the RSRP and RSRQ measurement results of the neighboring cell frequency points sent by the terminal, that the measurement result does not meet the preset condition
  • the network data communication performance index of the neighboring cell frequency point further sent by the terminal is further determined. And determining whether the network data communication performance indicator of the neighboring frequency meets the preset condition, and when the network data communication performance indicator of at least one of the neighbor frequency points satisfies the SRVCC handover condition, the base station determines to initiate the SRVCC handover.
  • Voice switching methods include:
  • the terminal acquires the error block rate of the voice data of the serving cell, and triggers the SRVCC handover according to the obtained block error rate, that is, the network that carries the voice call is switched from the LTE to the 2G/3G network.
  • the method for determining the network that carries the voice call according to the obtained block error rate may include: when the block error rate meets the event triggering condition, that is, when the block error rate is higher than the preset threshold, the terminal sends a trigger event to the base station.
  • the message that the terminal requests measurement configuration information from the base station.
  • the base station After receiving the trigger event message, the base station sends the measurement configuration information to the terminal to instruct the terminal to measure the RSRP and the RSRQ of the neighboring cell frequency point, and the terminal measures the RSRP and the RSRQ of the neighboring cell frequency point and sends the RSRP and the RSRQ to the base station, and the base station determines the neighboring cell frequency point.
  • the SRVCC handover is initiated, that is, the handover to the neighboring frequency network carries the voice call.
  • the current serving cell is kept carrying the voice call.
  • FIG. 3 is a flowchart of another method for voice switching according to an embodiment of the present invention. Taking FIG. 3 as an example, the execution steps of the voice switching method are exemplified. As shown in FIG. 3, the method 300 can include the following steps:
  • S310 The terminal requests measurement configuration information from the base station.
  • S320 The terminal measures signal strength and signal quality of the neighboring frequency point according to the measurement configuration information.
  • S330 The terminal sends a measurement report to the base station.
  • S340 The terminal performs SRVCC handover according to the indication of the base station. That is, the voice service is switched from the LTE network to the 2G/3G network.
  • the terminal requests measurement configuration information from the base station (S310).
  • the terminal when the error block rate of the voice data satisfies the event trigger condition, the terminal requests the measurement configuration information from the base station.
  • the voice data is VoLTE voice data.
  • the terminal can obtain the block error rate of the uplink voice data by analyzing the physical hybrid automatic repeat request indicator channel (PHICH).
  • PHICH physical hybrid automatic repeat request indicator channel
  • the terminal may also obtain a block error rate of the downlink voice data by analyzing a physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • the terminal sends an event to the base station.
  • the trigger message is sent to indicate that the base station sends the measurement configuration information to the terminal, or the terminal requests the measurement configuration information from the base station.
  • the terminal may also send a trigger event message to the base station according to the network data communication performance indicator (such as: access delay, network jitter, and packet loss rate, etc.), that is, measuring the signal strength value of the neighboring frequency point. And signal quality values.
  • the network data communication performance indicator meets the preset condition
  • the terminal sends a trigger event message to the base station to instruct the base station to send the measurement configuration information to the terminal, that is, the terminal requests the measurement configuration information from the base station.
  • the terminal weights the plurality of network data communication performance indicators according to the preset weighting parameter to determine the weighting value.
  • the terminal sends a trigger event message to the base station, instructing the base station to send the measurement configuration information.
  • the weighting parameter may be set as needed, and is not limited in the present invention.
  • the access delay, the network jitter, or the packet loss rate may not exceed a corresponding first preset threshold, for example, setting a network one-way delay to be less than 200 ms.
  • a network one-way delay for example, setting a network one-way delay to be less than 200 ms.
  • ITU International Telecommunication Union Telecommunication Standardization Group
  • high-quality voice requires that the network's one-way delay should be less than 150ms.
  • the packet loss rate of the voice directly affects the continuity of the voice call.
  • the packet loss rate of the voice can be set to be less than 1%.
  • the method for determining the access delay, the packet loss rate, and the network jitter is the same as the prior art, and is briefly described herein.
  • the terminal may also send a trigger event message to the base station according to the LTE signal strength, that is, when the LTE signal strength meets the preset condition, the terminal sends a trigger event message to the base station to instruct the base station to send the measurement configuration to the terminal.
  • Information that is, the terminal requests measurement configuration information from the base station.
  • the terminal determines that the network data communication performance indicator does not meet the preset condition, determining whether the LTE signal strength meets the preset condition, when the LTE signal strength meets the preset condition, the terminal sends a trigger event message to the base station, to The base station is instructed to send measurement configuration information to the terminal, that is, the terminal requests measurement configuration information from the base station.
  • the terminal when the terminal determines that the network data communication performance indicator and the LTE signal strength do not meet the preset condition, the terminal performs access delay, network jitter, packet loss rate, and/or according to the preset weighting parameter.
  • the LTE signal strength is weighted and the weighting value is determined.
  • the terminal sends a trigger event message to the base station to instruct the base station to send the measurement configuration information to the terminal, that is, the terminal requests the measurement configuration information from the base station.
  • the terminal sends a trigger event message to the base station;
  • the terminal sends a trigger event message to the base station;
  • the terminal when the packet loss rate meets the preset condition, the access delay, the network jitter, and the LTE signal strength do not satisfy the preset condition, the terminal sends a trigger event message to the base station; or
  • the terminal when the LTE signal strength meets the preset condition, the access delay, the network jitter, and the packet loss rate do not satisfy the preset condition, the terminal sends a trigger event message to the base station;
  • the terminal sends a trigger event message to the base station when the packet loss rate and the LTE signal strength do not satisfy the preset condition;
  • the terminal When the access delay and the packet loss rate satisfy the preset condition, when the network jitter and the LTE signal strength do not satisfy the preset condition, the terminal sends a trigger event message to the base station; or
  • the terminal sends a trigger event message to the base station;
  • the terminal when the network jitter and the packet loss rate meet the preset condition, and the access delay and the LTE signal strength do not satisfy the preset condition, the terminal sends a trigger event message to the base station;
  • the terminal when the network jitter and the LTE signal strength meet the preset condition, and the access delay and the packet loss rate do not satisfy the preset condition, the terminal sends a trigger event message to the base station; or
  • the terminal when the packet loss rate and the LTE signal strength meet the preset condition, and the access delay and the network jitter do not satisfy the preset condition, the terminal sends a trigger event message to the base station;
  • the terminal when the access delay, the network jitter, and the packet loss rate satisfy the preset condition, and the LTE signal strength does not satisfy the preset condition, the terminal sends a trigger event message to the base station; or
  • the terminal when the access delay, the network jitter, and the LTE signal strength meet the preset condition, and the packet loss rate does not satisfy the preset condition, the terminal sends a trigger event message to the base station; or
  • the terminal when the network jitter, the packet loss rate, and the LTE signal strength meet the preset condition, and the access delay does not satisfy the preset condition, the terminal sends a trigger event message to the base station; or
  • the terminal when the access delay, the packet loss rate, and the LTE signal strength meet the preset condition, and the network jitter does not satisfy the preset, the terminal sends a trigger event message to the base station; or
  • the terminal sends a trigger event message to the base station;
  • the terminal When the access delay, packet loss rate, network jitter, and LTE signal strength do not meet the preset conditions, the terminal performs access delay, network jitter, packet loss rate, and/or according to preset weighting parameters.
  • the LTE signal strength is weighted and the weighting value is determined.
  • the terminal sends a trigger event message to the base station to instruct the base station to send the measurement configuration information to the terminal, that is, the terminal requests the measurement configuration information from the base station.
  • the terminal may send a trigger event message to the base station to trigger the SRVCC handover by using the error block rate of the voice data, and may also send a trigger event message to the base station by using the access delay, the packet loss rate, the network jitter, and the LTE signal strength, and triggering.
  • SRVCC switching When the SRVCC handover condition is not met, the terminal remains camped on the current serving cell, and the terminal can re-detect the voice data block error rate, access delay, packet loss rate, network jitter, and LTE signal strength. As an implementation manner, the terminal may periodically detect a block error rate, an access delay, a packet loss rate, a network jitter, and an LTE signal strength.
  • weighting parameter may be set according to design requirements, which is not limited in the present invention.
  • the trigger event message sent by the terminal to the base station may carry information such as RSRP, RSRQ, and trigger event of the serving cell.
  • the trigger event may include an A2 event, an A3 event, an A5 event, and a B2 event.
  • the A2 event indicates that the quality of the serving cell is lower than the threshold; the A3 event indicates that the quality of the neighboring cell is better than the serving cell; the A5 event indicates that the cell quality is lower than the threshold 1, and the neighboring cell is higher than the threshold 2; the B2 event indicates that the quality of the serving cell is lower than the threshold. 1.
  • the quality of the neighboring cell of the radio access technology (RAT) is better than the threshold 2.
  • the terminal may send a trigger event message to the base station in the form of a measurement report, or may send a trigger event message to the base station in a manner of quality of service QoS status information.
  • the base station may send the measurement configuration information to the terminal by using a measurement configuration (measConfig) cell carried in the Radio Resource Control (RRC) connection reconfiguration information.
  • measConfig measurement configuration
  • RRC Radio Resource Control
  • the measurement configuration information may include neighbor frequency information and a signal strength threshold and a signal quality threshold corresponding to the neighbor frequency.
  • the measurement configuration information may include measurement objects (ie, parameters indicating the terminal needs to be measured, such as signal strength and signal quality), neighbor list information (including neighbor frequency points), and measurement identifiers.
  • the first time, the first preset threshold, and the second preset threshold may be set as needed, and no limitation is imposed in the embodiment of the present invention.
  • the terminal After receiving the measurement configuration information, the terminal measures the signal strength and signal quality of the neighboring frequency point according to the measurement configuration information (S320).
  • the terminal measures the signal strength and signal quality of the neighboring frequency point according to the received measurement configuration information.
  • the terminal compares the measured signal strength and signal quality of the neighboring frequency point with the threshold value in the measurement configuration information table, when the signal strength of the first neighboring frequency point is greater than the threshold, and/or the first When the signal quality of the neighboring band is better than the threshold, step S330 is performed:
  • the terminal transmits a measurement report to the base station (S330).
  • the measurement report includes the first frequency information of the neighboring area.
  • a terminal sends a measurement report to a base station: one is that the terminal periodically sends a measurement report to the base station; and the other is that when the signal strength value or the signal quality value of the current serving cell measured by the terminal is lower than a preset threshold, The terminal sends a measurement report to the base station, where the measurement report may include the signal strength and signal quality of the current serving cell, and/or the signal strength and signal quality of the neighboring frequency point, so that the base station determines whether to perform SRVCC switching according to the measurement report.
  • the neighboring frequency point in the measurement configuration information is at least one frequency point.
  • the terminal may measure the signal strength and/or the signal of the neighboring frequency point by using a discontinuous reception (DRX) sleep period.
  • DRX discontinuous reception
  • No. Quality That is, the measurement is started when the terminal receives the measurement configuration information. It is not necessary to estimate whether the measurement can be completed within the DRX cycle, and the measurement is started directly.
  • the measurement action is completed ahead of time, shortening the time between receiving the measurement configuration information and starting the measurement, and switching the measurement report back to the base station early to switch, improving the switching speed, and avoiding the slow switching. Voice dropped calls.
  • the DRX sleep period means that the terminal is in the RRC_CONNECTED state and has no data transmission for a period of time, but can receive physical channel data, such as PDSCH, during the DRX sleep period.
  • the main purpose of the DRX sleep period is to reduce the power consumption of the idle state terminal.
  • the terminal only measures the neighbor frequency points included in the neighbor list of the measurement configuration information, or the RRC layer is not sent to the physical layer during the test.
  • the invalid frequency points in the neighboring cell list are not measured, that is, the terminal does not measure these invalid frequency points, so as to shorten the measurement period, improve the switching speed, and avoid the LTE signal being poor, resulting in slow switching. Voice dropped calls.
  • the terminal performs SRVCC handover according to the instruction of the base station (S340). That is, the voice service is switched from the LTE network to the 2G/3G network.
  • the base station determines whether to perform the SRVCC handover according to the measurement result sent by the terminal.
  • the base station instructs the terminal to perform the SRVCC handover.
  • the terminal when the base station determines that the SRVCC handover is not performed according to the judgment manner in the prior art, the terminal triggers the base station to perform the SRVCC handover according to the error block rate of the voice data, the network data communication performance indicator, and/or the LTE signal strength. . That is, when the error block rate of the voice data satisfies the preset condition, and/or when the network data communication performance indicator satisfies the preset condition, and/or when the LTE signal strength satisfies the preset condition, the terminal actively triggers the base station to send the measurement configuration information.
  • the terminal measures the signal strength of the neighboring frequency point and the signal quality according to the measurement configuration information; the terminal sends the measurement result to the base station; the base station determines whether to perform the SRVCC handover according to the measurement result of the terminal, and instructs the terminal to perform the SRVCC handover, thereby reducing the network congestion caused by the network.
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the terminal 400 may include: a sending unit 410 and a measuring unit 420.
  • the sending unit 410 is configured to perform the methods of S310 and S330 in FIG. 3 of the method embodiment of the present invention. Reference may be made to the descriptions corresponding to S310 and S330 in FIG. 3, and details are not described herein again.
  • the measurement unit 420 is configured to perform the method of S320 in FIG. 3 of the method embodiment of the present invention. Reference may be made to the description corresponding to S320 in FIG. 3, and details are not described herein again.
  • the terminal 400 may further include an executing unit 430, which is used to perform the method of S340 in FIG. 3 of the method embodiment of the present invention. Reference may be made to the description corresponding to S340 in FIG. 3, and details are not described herein again.
  • the sending unit 410 may further include an obtaining unit 450 and a determining unit 460;
  • the obtaining unit 450 is configured to parse the physical channel and obtain the error rate of the voice data.
  • a specific method for obtaining the error rate reference may be made to the corresponding description of the step S310 in the method embodiment of the present invention, and details are not described herein again.
  • the determining unit 460 is configured to determine whether the block error rate of the voice data satisfies the event triggering condition.
  • the sending unit 410 sends a trigger event message to the base station, that is, requests the base station to perform measurement. Configuration information.
  • a method for determining whether the block error rate satisfies the event triggering condition reference may be made to the corresponding description of step S310 of the method embodiment of the present invention, and details are not described herein again.
  • the measuring unit 420 may further include a receiving unit 440, configured to receive measurement configuration information sent by the base station.
  • the measuring unit 420 measures the signal strength and signal quality of the neighboring frequency point according to the measurement configuration information received by the receiving unit 440.
  • the principle of the terminal for solving the problem of the voice switching provided in the embodiment of the present invention is similar to the method for the voice switching in the method embodiment of the present invention. Therefore, the implementation of the terminal can refer to the implementation of the method. I won't go into details here.
  • FIG. 5 is a schematic structural diagram of another terminal according to an embodiment of the present invention.
  • the terminal 500 includes a transmitter 510, a receiver 520, a processor 530, a memory 540, and a communication bus 550.
  • the transmitter 510, the receiver 520, the processor 530, and the memory 540 are connected by a communication bus 550.
  • the transmitter 510 and the receiver 520 are configured to complete transmission and reception of data with an external device
  • the memory 540 is configured to store computer executable program code
  • the program code includes instructions; when the processor executes the instruction, the
  • the principle of the terminal for solving the problem of the voice switching provided in the embodiment of the present invention is similar to the method for the voice switching in the method embodiment of the present invention. Therefore, the implementation of the terminal can refer to the implementation of the method. I won't go into details here.
  • an embodiment of the present invention further provides a non-transitory computer readable storage medium storing one or more programs, the non-volatile computer readable storage medium storing at least one program, each of the programs
  • the method includes the following steps: when the terminal is executed by the terminal provided by the embodiment of the present invention, the terminal is configured to perform the methods S310, S320, S330, and S340 in FIG. 3 of the embodiment of the present invention, and may refer to S310 and S320 in FIG. Corresponding descriptions of S330 and S340 are not described herein again.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明涉及一种语音切换的方法和终端，该方法包括：终端向基站请求测量配置信息；所述终端根据所述测量配置信息测量邻区频点的信号强度和信号质量，所述测量配置信息中包括所述邻区频点信息；所述终端向所述基站发送测量报告，所述测量报告中包括邻区第一频点；所述邻区第一频点的信号强度大于预设信号强度门限；所述邻区第一频点的信号质量优于预设信号质量门限；所述终端根据所述基站的指示，执行SRVCC切换。终端主动触发SRVCC切换，降低了由于网络拥堵造成的语音掉话次数。

Description

一种语音切换的方法、终端以及存储介质 技术领域
本发明涉及网络语音领域，尤其涉及一种基于长期演进(Long Term Evolution，LTE)网络语音技术的语音切换方法和终端。
背景技术
随着LTE网络的普及，当前语音技术包括三种类型：语音和LTE同步技术(Simultaneous Voice and LTE，SVLTE)或SRLTE(Single Radio LTE)、电路域回落(circuit switched fallback，CSFB)、基于LTE网络的语音(Voice over LTE，VoLTE)。SVLTE/SRTLE适用于电信终端，LTE提供数据业务以及2G提供语音通话业务。CSFB适用于移动或联通终端，包括海外大部分运营商，LTE只提供数据业务，当发起或者接受语音呼叫时，回落到2G/3G进行处理。VoLTE为基于IP多媒体***(IP Multimedia Subsystem，IMS)的语音业务，是一种因特网协议(Internet Protocol，IP)数据传输技术，无需2G/3G网，全部业务承载于4G网络上，可以实现数据业务于语音业务在同一网络下的统一。
现有技术中，在LTE网络覆盖未达到全面覆盖之前，如边缘地带，为保证语音呼叫的连续性，需要对VoLTE语音业务进行单无线语音连续呼叫(Single Radio Voice Call Continuity，SRVCC)切换，可以支持4G到3G(宽带码分多址(Wideband Code Division Multiple Access，WCDMA)或时分同步码分多址(Time Division-Synchronous Code Division Multiple Access，TD-SCDMA))或4G到2G(全球移动通信***(Global System for Mobile Communication，GSM))，以减少用户移出LTE网络覆盖而导致的语音掉线。
但现有技术中，对VoLTE语音业务进行SRVCC切换，并没有考虑到当LTE信号差时，因终端测量等原因造成的SRVCC切换慢导致掉线的情况；也没有考虑到当LTE信号好时，因网络拥塞造成语音效果不好导致掉线的情况。
发明内容
本发明提供了一种语音切换的方法和终端，降低了由于网络拥塞造成的语音掉话。
第一方面，本发明实施例提供了一种语音切换的方法，该方法包括：
首先，终端向基站请求测量配置信息；所述终端根据所述测量配置信息测量邻区频点的信号强度和信号质量，所述测量配置信息中包括所述邻区频点信息；然后，所述终端向所述基站发送测量报告，所述测量报告中包括邻区第一频点；所述邻区第一频点的信号强度大于预设信号强度门限；所述邻区第一频点的信号质量优于预设信号质量门限；基站根据所述终端发送的测量报告确定是否进行SRVCC切换，当确定进行SRVCC切换时，基站向终端发送指示，终端根据所述基站的指示，执行SRVCC切换。
终端主动触发SRVCC切换，降低了由于网络拥堵造成的语音掉话次数。
结合第一方面，在第一方面的第一种可能实现的方式中，当语音数据的误块率高于预设阈值时，所述终端向基站请求测量配置信息。
结合第一方面，在第一方面的第二种可能实现的方式中，当接入延时，网络抖动，以及丢包率中的任一项满足预设条件时，所述终端向基站请求测量配置信息。
结合第一方面，在第一方面的第三种可能实现的方式中，根据接入延时、网络抖动、丢包率、以及LTE信号强度确定加权值；当所述加权值满足预设条件时，所述终端向基站请求测量配置信息。
结合第一方面，第一方面的第一种可能实现的方式，第一方面的第二 种可能实现的方式或第一方面的第三种可能实现的方式，在第一方面的第四种可能实现的方式中，所述终端利用非连续接收(Discontinuous Reception，DRX)休眠期，根据所述测量配置信息，测量所述邻区频点的信号强度和信号质量。缩短了收到测量配置信息与启动测量之间的时间，及早将测量报告反馈给基站的时间进行切换，提高切换速度，避免由于切换慢造成的语音掉话。
第二方面，本发明实施例提供了一种终端，该终端包括发送单元，测量单元，以及执行单元；基于同一发明构思，由于该终端解决问题的原理以及有益效果可以参见上述第一方面和第一方面的各可能的实施方式以及所带来的有益效果，因此该终端的实施可以参见方法的实施，重复之处不再赘述。
第三方面，本发明实施例提供了一种终端，该终端包括发送器、接收器、处理器和存储器；其中，发送器和接收器用于向外部设备完成数据的发送和接收，存储器用于存储计算机可执行程序代码，所述程序代码包括指令，当所述处理器执行所述指令时，实现上述第一方面的方法设计中的方案，由于该终端解决问题的实施方式以及有益效果可以参见上述第一方面和第一方面的各可能的实施方式以及有益效果，因此该终端的实施可以参见第一方面方法的实施，重复之处不再赘述。
第四方面，本发明实施例提供了一种计算机存储介质，所述存储介质为非易失性计算机可读存储介质，所述非易失性计算机可读存储介质存储有至少一个程序，每个所述程序包括上述第一方面方法设计方案所涉及的计算机软件指令，当所述指令被具有处理器、发送器，接收器，和存储器的终端执行时使所述终端执行上述第一方面和第一方面的各可能的语音切换处理方法。基于本发明提供的语音切换的方法和终端，通过数据的误块率触发异***测量，降低了由于网络拥堵造成的语音掉话次数。
本发明实施例提供一种语音切换的方法、终端设备和存储介质，终当 语音数据的误块率高于预设阈值，当接入延时，网络抖动，以及丢包率中的任一项满足预设条件，和/或当根据接入延时、网络抖动、丢包率、以及LTE信号强度确定的加权值满足预设条件时，所述终端向基站请求测量配置信息；所述终端根据所述测量配置信息测量邻区频点的信号强度和信号质量，所述测量配置信息中包括所述邻区频点信息；所述终端向所述基站发送测量报告，所述测量报告中包括邻区第一频点；所述邻区第一频点的信号强度大于预设信号强度门限；所述邻区第一频点的信号质量优于预设信号质量门限；所述终端根据所述基站的指示，执行SRVCC切换。通过本发明实施例实现终端主动触发SRVCC切换，降低了由于网络拥堵造成的语音掉话次数。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种网络***架构图；
图2为本发明实施例提供的一种语音切换的方法流程图；
图3为本发明实施例提供的另一种语音切换的方法流程图；
图4为本发明实施例提供的一种终端结构示意图；
图5为本发明实施例提供的另一种终端结构示意图。
具体实施方式
本发明实施例提供一种语音切换的方法和终端，适用于LTE网络、3G网络、以及2G网络覆盖边界且LTE网络信号比较弱，或者网络负载均衡等原因引起的网络切换的应用场景。
下面以由LTE网络向2G/3G网络SRVCC切换为例，对本发明的技术方案进行详细的说明。
图1为本发明实施例提供的一种网络***架构图。结合图1示例性说明由4G网络向2G/3G网络SRVCC切换的网络架构。
如图1所示，该网络架构100中可以包括终端110、语音切换前终端110所驻留网络的基站120、移动管理实体(Mobility Management Entity，MME)130、服务网关(Serving Gateway，SGW)或分组数据网关(Packet Date Network Gateway，PDN网关)140，语音切换后终端110所驻留网络的SRVCC互通功能(InterWorking Function，IWF)设备150、目标移动交换中心(Mobile Switching Center，MSC)160、GPRS业务支持节点(Serving GPRS Support Node，SGSN)170、基站子***(Base Station Subsystem，BSS)180和IP多媒体子***(IP Multimedia Subsystem，IMS)190。其中，SRVCC IWF设备150是用于提供互连的网络功能实体，可以是网络中一个或多个逻辑或物理实体的一部分。
该网络***中的各个设备相互通信，以完成语音切换以及相应的通信。
终端110确定服务小区的LTE网络的语音数据误块率，当误块率满足事件触发条件时，向基站120发送触发事件消息请求测量配置信息。基站120接收触发事件消息，并向终端110发送测量配置信息。测量配置信息中包括邻区列表，邻区列表包括邻区频点信息，邻区频点优选为非4G网络频点，例如：2G/3G网络频点。终端接收测量配置信息，确定邻区频点的信号强度和信号质量。可以通过测量参考信号接收功率(reference signal receiving power，RSRP)确定信号强度。可以通过测量参考信号接收质量(reference signal receiving quality，RSRQ)确定信号质量。并将邻区频点的信号强度和信号质量发送给基站120。终端判断邻区频点的信号强度是否大于预设信号强度，和/或判断邻区频点的信号质量是否优于预设信号质量。当终端判断邻区第一频点的信号强度大于预设信号强度门限，和/或邻区第一频点的信号质量优于 预设信号质量门限时，终端向基站120发送测量报告。所述测量报告中包括邻区第一频点信息，邻区第一频点的信号质量，以及邻区第一频点的信号强度。基站120根据终端发送的邻区频点的信号强度和信号质量确定是否进行SRVCC切换，当邻区频点的信号强度高于预设信号强度门限、邻区频点的信号质量优于信号质量门限时，确定进行SRVCC切换，即：将终端的语音业务由LTE网络切换至2G/3G网络。
当确定进行SRVCC切换时，通过MME 130、SRVCC IWF设备150以及目标MSC 160向目标RNS/BSS 180发送切换请求消息，以完成CS域空口资源分配，并通知目标MSC160、目标RNS/BSS 180以及SRVCC IWF设备150完成CS域空口资源分配，以便于SRVCC IWF设备150与目标MSC 160完成电路连接；建立电路连接后，SRVCC IWF设备150向IMS190发起会话，并向MME130发送切换响应；MME 130通过接入设备120向终端110发送切换指令，终端110根据切换指令进行SRVCC切换，即：将语音业务由LTE网络切换到3G或2G网络。
在本发明实施例中，终端110确定服务小区的LTE网络的语音数据误块率，误块率满足事件触发条件，具体指的是：终端通过解析物理混合自动重传指示信道(Physical Hybrid ARQ Indicator Channel，PHICH)，获取n*T时间内的上行数据，确定获取的上行数据的误块率，并判断上行数据的误块率是否高于预设的阈值(第一预设阈值)A，当上行数据的误块率高于预设的阈值A时，确定误块率满足事件触发条件。其中，T为采样窗口时间；n为正整数。
或者终端110确定服务小区的LTE网络的语音数据误块率，当误块率满足事件触发条件，具体指的是：终端通过解析物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，获取n*T时间内的下行数据，并确定获取得到下行数据的误块率，判断下行数据的误块率是否高于预设的阈值(第二预设阈值)B。当下行数据的误块率高于预设的阈值B时，确定 误块率满足事件触发条件。
在本发明实施例中，终端110还可以根据服务小区的LTE网络数据通信性能指标触发基站120下发测量配置信息。当服务小区的LTE网络数据通信性能指标满足预设条件时，终端110向基站120发送触发事件消息，触发基站120向终端下发测量配置信息。其中，LTE网络数据通信性能指标可以包括接入时延信息、网络抖动信息、丢包率等信息。根据服务小区的LTE网络数据通信性能指标触发接入网下发测量配置信息的方法400，后续结合图4详细说明。
测量配置信息中可以包括终端110需要测量的对象、邻区列表、报告方式、测量标识、时间参数等信息。终端110根据测量配置信息确定邻区频点的RSRP和RSRQ。。终端110判断所测量的RSRP和RSRQ是否满足预设的事件触发条件。终端将RSRP和RSRQ发送给基站120。可选的，终端以测量报告的形式将RSRP和RSRQ发送给基站120。
图2为本发明实施例提供的一种语音切换的方法流程图；如图2所示，基站120接收终端发送的邻区频点的RSRP和RSRQ的测量结果，判断测量结果是否满足预设条件，该预设条件为，测量的邻区频点的信号强度高于预设的信号强度门限，邻区频点的信号质量优于预设的信号质量门限；当测量结果满足预设条件时，发起SRVCC切换。即：基站120向MME 130发送切换请求消息，切换请求消息中包括SRVCC互通功能(InterWoring Function，IWF)设备150的目标标识(target ID)，并指示该切换为SRVCC切换。
MME 130根据切换请求消息中的SRVCC切换指示，分离出语音承载(可以通过识别服务质量标度值(QoS class identifier，QCI)以识别语音承载，当QCI＝1时，表征承载的是语音信号)，并向SRVCC IWF设备的目标标识对应的SRVCC IWF设备150发送PS-CS切换请求消息，该PS-CS切换请求消息中可以携带SRVCC切换的必要信息，如：STN-SR(Session Transfer Number for SRVCC)、移动台国际ISDN(Integrated Service Digital Network) 号码(Mobile Subscriber International ISDN number，MSISDN)、MM context，其中CS密钥由MME导出放到MM context中，以及目标MSC 160的标识ID。
SRVCC IWF设备150向PS-CS切换请求消息中目标MSC 160的标识对应的MSC发送准备切换请求消息(Prepare Handover Request)，该切换与传统的MSC之间的切换类似，为表述简洁，在这里不再赘述。
目标MSC160向目标RNS/BSS 180发送切换请求消息(Handover Response)，以便于目标RNS/BSS 180完成CS域空口资源分配，该过程与传统MSC之间切换类似，为简洁描述，在这里不再赘述。目标RNS/BSS 180完成空口资源分配后，向目标MSC160发送响应消息，以指示空口资源分配完成。目标MSC160根据目标RNS/BSS 180发送的响应消息向SRVCC IWF设备150发送准备切换响应消息(Prepare Handover Response)，SRVCC IWF设备150建立与目标MSC160间的电路连接(ISUP IAM，ACM)。
SRVCC IWF设备150向IMS 190发起初始会话传输(initiate session transfer，IST)流程，被叫号码为STN-SR，主叫号码为MSISDN，信令可以是ISDN的用户部分(ISDN User Part，ISUP)，若是ISUP，则必须经过媒体网关控制功能(Media Gateway Control Function，MGCF)。SCC AS完成会话的切换，更新远端终端的媒体信息。
SRVCC IWF设备150向MME 130转发PS-CS切换响应消息，该PS-CS切换响应消息用于指示目标空口资源已经准备就绪。MME 130接收到该PS-CS切换响应消息后，通过基站120向终端110发送切换指令，以指示终端将语音业务由LTE网络切换至2G/3G网络。
终端110切换到UTRAN或GERAN，BSS 180并完成切换检测，向目标MSC 160发送切换完成信息(Handover Complete)指示终端110完成切换，目标MSC 160向SRVCC IWF设备150发送切换完成信息和ISUP ANM。SRVCC IWF设备150向MME 130发送切换完成信息，并向HLR发起隐式位置更新，使其充当传统CS域切换的控制(controlling)MSC。
需要说明的是，终端向基站发送的测量结果中还可以携带多项邻区频点的网络数据通信性能指标，以便于基站确定是否发起SRVCC切换。
在另一个实施例中，当基站根据终端发送的邻区频点的RSRP和RSRQ的测量结果，判断测量结果不满足预设条件时，进一步根据终端发送的邻区频点的网络数据通信性能指标，判断邻区频点的网络数据通信性能指标是否满足预设条件，当至少任一项邻区频点的网络数据通信性能指标满足SRVCC切换条件时，基站确定发起SRVCC切换。
以上为进行语音切换的具体过程。下面我们对语音切换的实现方法进行详细的描述。语音切换方法包括：
终端获取服务小区的语音数据的误块率，根据所获取的误块率触发SRVCC切换，即将承载语音通话的网络由LTE切换至2G/3G网络。
其中，根据所获取的误块率确定承载语音通话的网络的实现方式，可以包括：当误块率满足事件触发条件，即：当误块率高于预设阈值时，终端向基站发送触发事件消息，即终端向基站请求测量配置信息。基站收到该触发事件消息后，向终端发送测量配置信息，以指示终端测量邻区频点的RSRP和RSRQ，终端测量邻区频点的RSRP和RSRQ并发送至基站，基站判断邻区频点的RSRP和RSRQ是否满足预设条件，当判断满足预设条件时，发起SRVCC切换，即切换至邻区频点网络承载语音通话。
当误块率小于等于预设阈值时，保持当前服务小区承载语音通话。
图3为本发明实施例提供的另一种语音切换的方法流程图。以图3为例，示例性说明语音切换方法的执行步骤。如图3所示，该方法300可以包括以下步骤：
S310：终端向基站请求测量配置信息；
S320：终端根据测量配置信息测量邻区频点的信号强度和信号质量；
S330:终端向基站发送测量报告；
S340：终端根据基站的指示，执行SRVCC切换。即：将语音业务由LTE网络切换至2G/3G网络。
其中，终端向基站请求测量配置信息(S310)。
在本发明实施例中，当语音数据的误块率满足事件触发条件时，终端向基站请求测量配置信息。
在本发明实施例中，语音数据为VoLTE语音数据。
终端可以通过解析物理混合自动重传指示信道(physical Hybrid Automatic Repeat Request indicator channel，PHICH)，获取上行语音数据的误块率，当上行语音数据的误块率高于第一预设阈值时，终端向基站发送事件触发消息，以指示基站向终端下发测量配置信息，或者说终端向基站请求测量配置信息。或者
终端也可以通过解析物理下行共享物理信道(physical downlink shared channel，PDSCH)，获取下行语音数据的误块率，当下行语音数据的误块率高于第二预设阈值时，终端向基站发送事件触发消息，以指示基站向终端下发测量配置信息，或者说终端向基站请求测量配置信息。
在本发明实施例中，终端还可以根据网络数据通信性能指标(如：接入延时、网络抖动以及丢包率等)向基站发送触发事件消息，即：测量邻区频点的信号强度值以及信号质量值。当任一项网络数据通信性能指标满足预设条件时，终端向基站发送触发事件消息，以指示基站向终端下发测量配置信息，即终端向基站请求测量配置信息。当多项网络数据通信性能指标中的任一项网络数据通信性能指标均不满足预设条件时，终端根据预设的加权参数对多项网络数据通信性能指标加权计算，确定加权值。当加权值满足预设条件时，终端向基站发送触发事件消息，指示基站下发测量配置信息。需要说明的是，加权参数可以根据需要进行设置，在本发明中对此不作限制。
为保证用户的通话质量，以及用户通话的连续性，需要为用户的通话 质量设置一些门限值(或者说预设阈值)，以便于控制和管理通话质量。
在本发明实施例中，可以设置接入时延、网络抖动、或丢包率不能超过对应的第一预设阈值，比如设置网络单向延迟小于200ms。按照国际电信联盟远程通信标准化组(ITU)的标准，高质量的语音要求网络的单向延迟应小于150ms。一旦单向语音延迟超过250ms时，通话双方会明显感觉对方的反映太慢。语音的丢包率直接影响语音通话的连续性，为保证语音通话的连续性，例如可以设置语音的丢包率小于1％。
需要说明的是，在本发明实施例中，确定接入时延、丢包率，和网络抖动的方法与现有技术相同，为简洁描述，在这里赘述。
在本发明实施例中，终端还可以根据LTE信号强度向基站发送触发事件消息，即：当LTE信号强度满足预设条件时，终端向基站发送触发事件消息，以指示基站向终端下发测量配置信息，即终端向基站请求测量配置信息。
作为一种实施方式，当终端确定网络数据通信性能指标不满足预设条件时，确定LTE信号强度是否满足预设条件，当LTE信号强度满足预设条件时，终端向基站发送触发事件消息，以指示基站向终端下发测量配置信息，即终端向基站请求测量配置信息。
作为另一种实施方式，当终端确定网络数据通信性能指标和LTE信号强度都不满足预设条件时，终端根据预设的加权参数对接入时延、网络抖动、丢包率、和/或LTE信号强度加权计算，确定加权值。当加权值满足预设条件时，终端向基站发送触发事件消息，以指示基站向终端下发测量配置信息，即终端向基站请求测量配置信息。即：
1)当接入时延满足预设条件，网络抖动、丢包率、和LTE信号强度不满足预设条件时，终端向基站发送触发事件消息；或
2)当网络抖动满足预设条件，接入时延、丢包率、和LTE信号强度 不满足预设条件时，终端向基站发送触发事件消息；或
3)当丢包率满足预设条件，接入时延、网络抖动、和LTE信号强度不满足预设条件时，终端向基站发送触发事件消息；或
4)当LTE信号强度满足预设条件，接入时延、网络抖动、和丢包率不满足预设条件时，终端向基站发送触发事件消息；或
5)当接入时延和网络抖动满足预设条件，丢包率和LTE信号强度不满足预设条件时，终端向基站发送触发事件消息；或
6)当接入时延和丢包率满足预设条件，网络抖动和LTE信号强度不满足预设条件时，终端向基站发送触发事件消息；或
7)当接入时延和LTE信号强度满足预设条件，网络抖动和丢包率不满足预设条件时，终端向基站发送触发事件消息；或
8)当网络抖动和丢包率满足预设条件，接入时延和LTE信号强度不满足预设条件时，终端向基站发送触发事件消息；或
9)当网络抖动和LTE信号强度满足预设条件，接入时延和丢包率不满足预设条件时，终端向基站发送触发事件消息；或
10)当丢包率和LTE信号强度满足预设条件，接入时延和网络抖动不满足预设条件时，终端向基站发送触发事件消息；或
11)当接入时延、网络抖动，和丢包率满足预设条件，LTE信号强度不满足预设条件时，终端向基站发送触发事件消息；或
12)当接入时延、网络抖动，和LTE信号强度满足预设条件，丢包率不满足预设条件时，终端向基站发送触发事件消息；或
13)当网络抖动、丢包率、和LTE信号强度满足预设条件，接入时延不满足预设条件时，终端向基站发送触发事件消息；或
14)当接入时延、丢包率、和LTE信号强度满足预设条件，网络抖动不满足预设件时，终端向基站发送触发事件消息；或
15)当接入时延、丢包率、网络抖动、和LTE信号强度都满足预设条 件时，终端向基站发送触发事件消息；
16)当接入时延、丢包率、网络抖动、和LTE信号强度都不满足预设条件时，终端根据预设的加权参数对接入时延、网络抖动、丢包率、和/或LTE信号强度加权计算，确定加权值。当加权值满足预设条件时，终端向基站发送触发事件消息，以指示基站向终端下发测量配置信息，即终端向基站请求测量配置信息。
以上，终端除了可以通过语音数据的误块率向基站发送触发事件消息，触发SRVCC切换；还可以通过接入时延、丢包率、网络抖动、和LTE信号强度向基站发送触发事件消息，触发SRVCC切换。当SRVCC切换条件不满足时，终端保持驻留在当前服务小区，且终端可以重新检测语音数据误块率、接入时延、丢包率、网络抖动、和LTE信号强度。作为一种实施方式，终端可以周期性检测误块率、接入时延、丢包率、网络抖动、和LTE信号强度。
需要说明的是，加权参数可以根据设计需要进行设置，在本发明中对此不作限制。
终端向基站发送的触发事件消息中可以携带服务小区的RSRP、RSRQ，以及触发事件等信息。
该触发事件可以包括A2事件、A3事件、A5事件和B2事件。其中，A2事件表示服务小区质量低于门限；A3事件表示邻小区质量优于服务小区；A5事件表示小区质量低于门限1，同时邻小区高于门限2；B2事件表示服务小区质量低于门限1，同时异无线接入技术(radio access technology，RAT)邻小区的质量优于门限2。
另外还需要说明的是，终端可以以测量报告的形式向基站发送触发事件消息，也可以通过服务质量QoS状态信息的方式向基站发送触发事件消息。
基站可以通过无线资源控制(Radio Resource Control，RRC)连接重新配置(Connection Reconfigurtion)信息中携带的测量配置(measConfig)信元向终端发送测量配置信息。
该测量配置信息中可以包括邻区频点信息以及邻区频点对应的信号强度门限值和信号质量门限值。测量配置信息中可以包括测量对象(即：指示终端需要测量的参数，例如：信号强度和信号质量)，邻区列表信息(包括邻区频点)，测量标识。
需要说明的是，在本发明实施例中，第一时间、第一预设阈值、和第二预设阈值可以根据需要进行设置，在本发明实施例中不作任何限制。
终端收到测量配置信息后，终端根据测量配置信息测量邻区频点的信号强度和信号质量(S320)。
本发明实施例以测量对象为信号强度和信号质量为例，终端根据接收到的测量配置信息测量邻区频点的信号强度和信号质量。另外，终端将测量到的邻区频点的信号强度和信号质量与测量配置信息表中的门限值比较，当存在第一邻区频点的信号强度大于门限值，和/或第一邻区频段的信号质量优于门限值时，执行步骤S330:
终端向基站发送测量报告(S330)。测量报告中包括邻区第一频点信息。
终端向基站发送测量报告的方式有两种：一种是终端周期性向基站发送测量报告；另一种是当终端测量的当前服务小区的信号强度值或者信号质量值低于预设的阈值时，终端向基站发送测量报告，测量报告中可以包括当前服务小区的信号强度和信号质量，和/或邻区频点的信号强度和信号质量，以便于基站根据测量报告确定是否进行SRVCC切换。
需要说明的是，测量配置信息中邻区频点至少为一个频点。
优选地，作为本发明另一实施例，终端可以利用非连续接收(Discontinuous Reception，DRX)休眠期测量邻区频点的信号强度和/或信 号质量。即当终端接收到测量配置信息时启动测量。不需要估计该测量能否在该DRX周期内完成，直接启动测量。相比现有技术，相当于测量动作提前完成，缩短了收到测量配置信息与启动测量之间的时间，及早将测量报告反馈给基站的时间进行切换，提高切换速度，避免由于切换慢造成的语音掉话。
DRX休眠期是指终端处于RRC_CONNECTED状态下，在一段时间内没有数据传输，但在DRX休眠期可以接受物理信道的数据，如PDSCH等。DRX休眠期主要目的是降低空闲态终端的功耗。
优选地，作为本发明另一实施例，终端只对测量配置信息的邻区列表中包括的邻区频点进行测量，或者说，在测试过程中，无线网络控制RRC层不向物理层下发按照协议频段、频点划分，不在邻区列表内的无效频点，即终端不对这些无效频点进行测量，以缩短测量周期，提高切换速度，避免LTE信号较差使，由于切换慢而导致的语音掉话。
终端根据基站的指示，执行SRVCC切换(S340)。即：将语音业务由LTE网络切换至2G/3G网络。
基站根据终端发送的测量结果确定是否进行SRVCC切换，当确定结果为需要进行SRVCC切换时，基站指示终端执行SRVCC切换。
在本发明实施例中，当基站依据现有技术中的判断方式确定不进行SRVCC切换，终端根据语音数据的误块率和、网络数据通信性能指标、和/或LTE信号强度触发基站进行SRVCC切换。即：当语音数据的误块率满足预设条件，和/或当网络数据通信性能指标满足预设条件时，和/或当LTE信号强度满足预设条件时，终端主动触发基站发送测量配置信息，终端根据测量配置信息测量邻区频点的信号强度以及信号质量；终端将测量结果发送至基站；基站根据终端的测量结果确定是否进行SRVCC切换并指示终端进行SRVCC切换，降低了由于网络拥堵造成的语音掉话次数。
上文中结合图1至图3，详细描述了根据本发明实施例的语音切换的方法，下面将结合图4，详细描述根据本发明实施例的终端。
图4为本发明实施例提供的一种终端结构示意图，如图4所示，该终端400可以包括：发送单元410和测量单元420。
发送单元410，用于执行本发明方法实施例图3中S310和S330的方法，可以参考图3中的S310和S330对应的描述，在此不再赘述。
测量单元420用于执行本发明方法实施例图3中S320的方法，可以参考图3中的S320对应的描述，在此不再赘述。
该终端400还可以包括执行单元430，用于执行本发明方法实施例图3中S340的方法，可以参考图3中S340对应的描述，在此不再赘述。
另外，发送单元410还可以包括获取单元450和确定单元460；
获取单元450用于解析物理信道，获取语音数据的误码率，获取误码率的具体方法可以参考本发明方法实施例步骤S310的相应描述，在此不再赘述。
确定单元460用于确定语音数据的误块率是否满足事件触发条件，当确定单元460确定语音数据的误块率满足事件触发条件时，发送单元410向基站发送触发事件消息，即向基站请求测量配置信息。关于误块率是否满足事件触发条件的确定方法可以参考本发明方法实施例步骤S310的相应描述，在此不再赘述。
测量单元420还可以包括接收单元440，用于接收基站发送的测量配置信息。测量单元420根据接收单元440接收的测量配置信息测量邻区频点的信号强度和信号质量。
基于同一发明构思，本发明实施例中提供的语音切换的终端解决问题的原理与本发明方法实施例中的语音切换的方法相似，因此该终端的实施可以参见方法的实施，为简洁描述，在这里不再赘述。
图5为本发明实施例提供的另一种终端结构示意图。如图5所示，该终端500包括发送器510、接收器520、处理器530、存储器540和通信总线550，发送器510、接收器520、处理器530、存储器540通过通信总线550连接。其中，发送器510和接收器520用于与外部设备完成数据的发送和接收，存储器540用于存储计算机可执行程序代码，程序代码包括指令；当所述处理器执行所述指令时，所述指令使所述终端执行本发明实施例的语音切换的方法，可以参考图3中的S310、S320、S330、和S340的对应描述，在此不再赘述。基于同一发明构思，本发明实施例中提供的语音切换的终端解决问题的原理与本发明方法实施例中的语音切换的方法相似，因此该终端的实施可以参见方法的实施，为简洁描述，在这里不再赘述。
另外，本发明实施例还提供了一种存储一个或者多个程序的非易失性计算机可读存储介质，所述非易失性计算机可读存储介质存储有至少一个程序，每个所述程序包括指令，所述指令当被本发明实施例提供的终端执行时，使终端执行本发明实施例图3中的S310、S320、S330、和S340的方法，可以参考图3中的S310、S320、S330、和S340的对应描述，在此不再赘述。
在本发明实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述的具体实施方式，对本发明的目的、技术方案有益效果进行了进一步详细说明，所应理解的是，不同的实施例可以进行组合，以上所述本发明的具体实施方式，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何组合、修改、等同替换、改进等，均应包含在本发明的保护范围之内。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可想到各种等效的修改或替换，这些修改或替换都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (12)

  1. 一种语音切换的方法，其特征在于，所述方法包括：
    终端向基站请求测量配置信息；
    所述终端根据所述测量配置信息测量邻区频点的信号强度和信号质量，所述测量配置信息中包括所述邻区频点信息；
    所述终端向所述基站发送测量报告，所述测量报告中包括邻区第一频点；所述邻区第一频点的信号强度大于预设信号强度门限；所述邻区第一频点的信号质量优于预设信号质量门限；
    所述终端根据所述基站的指示，执行SRVCC切换。
  2. 根据权利要求1所述的方法，其特征在于，当语音数据的误块率高于预设阈值时，所述终端向基站请求测量配置信息。
  3. 根据权利要求1所述的方法，其特征在于，当接入延时，网络抖动，以及丢包率中的任一项满足预设条件时，所述终端向基站请求测量配置信息。
  4. 根据权利要求1所述的方法，其特征在于，根据接入延时、网络抖动、丢包率、以及LTE信号强度确定加权值；当所述加权值满足预设条件时，所述终端向基站请求测量配置信息。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述终端根据所述测量配置信息测量所述邻区频点的信号强度和信号质量，包括：
    所述终端利用非连续接收(Discontinuous Reception，DRX)休眠期，根据所述测量配置信息，测量所述邻区频点的信号强度和信号质量。
  6. 一种终端，其特征在于，所述终端包括发送单元，测量单元，以及执行单元；
    所述发送单元，用于向基站请求测量配置信息；
    所述测量单元，用于根据所述测量配置信息测量邻区频点的信号强度和信号质量，所述测量配置信息中包括邻区频点信息；
    所述发送单元还用于，向所述基站发送测量报告，所述测量报告中包括邻区第一频点；所述邻区第一频点的信号强度大于预设信号强度门限；所述邻区第一频点的信号质量优于预设信号质量门限；
    所述执行单元用于根据所述基站的指示，执行SRVCC切换。
  7. 根据权利要求6所述的终端，其特征在于，所述发送单元还包括获取单元和确定单元；
    所述获取单元用于获取语音数据的误块率；
    所述确定单元用于确定所述误块率是否高于预设阈值时，当所述确定单元确定所述误块率高于预设阈值时，所述发送单元向基站请求测量配置信息。
  8. 根据权利要求6所述的终端，其特征在于，所述发送单元还包括获取单元和确定单元；
    所述获取单元用于获取接入延时，网络抖动，和/或丢包率；
    所述确定单元用于确定所述接入延时，网络抖动，和/或丢包率是否满足预设条件；
    当所述接入延时，网络抖动，以及丢包率中的任一项满足预设条件时，所述发送单元向基站请求测量配置信息。
  9. 根据权利要求6所述的终端，其特征在于，所述发送单元还包括获取单元和确定单元；
    所述获取单元用于根据接入延时、网络抖动、丢包率、以及LTE信号强度确定加权值；
    所述确定单元用于确定所述加权值是否满足预设条件；
    当所述加权值满足预设条件时，所述发送单元向基站请求测量配置信息。
  10. 根据权利要求6至9任一项所述的终端，其特征在于，所述测量单元利用非连续接收(Discontinuous Reception，DRX)休眠期，根据所述 测量配置信息，测量所述邻区频点的信号强度和信号质量。
  11. 一种终端，其特征在于，所述终端包括：发送器、处理器、存储器；
    所述发送器、处理器、以及存储器通过总线耦接；
    所述存储器用于存储计算机可执行程序代码，所述程序代码包括指令；当所述处理器执行所述指令时，所述指令使所述终端执行根据权利要求1-5任一项所述的方法。
  12. 一种存储介质，其特征在于，所述存储介质为非易失性计算机可读存储介质，所述非易失性计算机可读存储介质存储有至少一个程序，每个所述程序包括指令，所述指令当被终端执行时，使所述终端执行根据权利要求1-5任一项所述的方法。
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