WO2016177036A1 - 语音呼叫方法及装置 - Google Patents

语音呼叫方法及装置 Download PDF

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Publication number
WO2016177036A1
WO2016177036A1 PCT/CN2016/074722 CN2016074722W WO2016177036A1 WO 2016177036 A1 WO2016177036 A1 WO 2016177036A1 CN 2016074722 W CN2016074722 W CN 2016074722W WO 2016177036 A1 WO2016177036 A1 WO 2016177036A1
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Prior art keywords
cell
signal value
determining
lte
voice call
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PCT/CN2016/074722
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English (en)
French (fr)
Inventor
李玲
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中兴通讯股份有限公司
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Publication of WO2016177036A1 publication Critical patent/WO2016177036A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control

Definitions

  • the present invention relates to the field of communications, and in particular to a voice call method and apparatus.
  • Circuit Switched Fallback is used to return the terminal to the circuit domain (Circuit Switching Domain, CS domain for short) when the terminal is registered to the Long Term Evolution (LTE) network.
  • Conduct CS services such as voice services.
  • VoIP Voice over LTE
  • PS Call packet switch call
  • IP Internet Protocol
  • IMS Internet Multimedia Subsystem
  • LTE/IMS has been deployed in some regions, but some regional networks only support CSFB. Therefore, in order to ensure smooth handover between the IMS-controlled IP bearer (Voice Over IP, VoIP for short) voice and the CS domain voice when the UE moves between the LTE/Pre-LTE network and the 2G/3G CS network,
  • IP bearer Voice Over IP
  • VoIP Voice Call Continuity
  • the LTE-switched LTE switches to the Global System for Mobile Communication (GSM)/Enhanced Data Rate for GSM Evolution (GSM) evolution access network (GSM/EDGE Radio Access, Referred to as GERAN)/Universal Terrestrial Radio Access Network (UTRAN). Since there is currently no terminal capable of attaching and transmitting data at the same time in LTE and GERAN/UTRAN, the service continuity before LTE and 2G/3G is based on the dual-mode single radio mode.
  • GSM Global System for Mobile Communication
  • GSM Enhanced Data Rate for GSM Evolution
  • GERAN Universal Terrestrial Radio Access Network
  • CSFB mainly provides voice by 2/3G circuit domain.
  • VOLTE scheme realizes voice call of LTE packet domain through IMS and guarantees voice smooth handover through SRVCC function.
  • no decision is made on the LTE call, but it is determined whether the PS call is performed before the call, or the CS call is directly performed through the CSFB to the 2G/3G.
  • SRVCC can guarantee smooth handover between IMS-controlled VoIP voice and CS domain voice
  • the precondition is that PS Call is first performed on LTE. If the user initiates a PS call on LTE, the LTE signal is weak. In this case, you need to establish a PS Call and then switch to the UTRAN/GERAN network through SRVCC. When the LTE signal is weak, establishing a PS call service obviously affects the efficiency of voice connection and the quality of voice calls.
  • the present invention provides a voice call method and apparatus to solve at least the problem that a terminal supporting VoLTE in the related art directly initiates a PS call when a voice call is performed when the signal quality is poor.
  • a voice call method including: determining a first signal value of a first cell where a terminal is currently located and a second signal value of a second cell adjacent to the first cell; Determining a call mode by using the first signal value and the second signal value, and determining, from the first cell and the second cell, a call cell in which the terminal initiates a voice call; using the determined call mode in A voice call is initiated on the determined calling cell.
  • determining the call mode according to the first signal value and the second signal value, and determining, from the first cell and the second cell, a call cell that initiates a voice call by the terminal includes: Determining whether the first signal value is greater than or equal to a first threshold; determining, when the first signal value is greater than or equal to the first threshold, determining to initiate on the first cell by using a long-term evolution-based voice service VoLTE Voice call.
  • the method further includes: determining, in the second cell, when determining that the first signal value is smaller than the first threshold There is a third cell, where the signal value of the third cell is greater than or equal to a second threshold; if the result of the determination is that, when the third cell is an LTE cell, use the VoLTE in the third cell.
  • Initiating a voice call or when the third cell is a universal mobile communication system terrestrial radio access network UTRAN cell or a universal mobile communication system/enhanced data rate universal mobile communication system evolution access network GERAN cell, using the circuit domain to fall back CSFB A voice call is initiated on the third cell.
  • the method further includes: determining, when the determination result is non-existent, whether the terminal resides in the first cell; As a result, if the terminal camps on the first cell, determining to initiate a voice call on the first cell by using VoLTE; if the result of the determination is that the terminal does not reside in the first cell, , to determine that the voice call failed.
  • determining whether the third cell exists in the second cell includes: determining whether the second cell exists in the order of priority of each cell in the second cell from high to low a cell with a signal value greater than or equal to a second threshold, wherein the LTE cell has the highest priority, the UTRAN cell priority is centered, and the GERAN cell has the lowest priority; and the result of the determination is that the cell having the signal value greater than or equal to the second threshold is present. Determining that the third cell exists in the second cell; if the result of the determination is that there is no cell whose signal value is greater than or equal to the second threshold, determining that the second cell does not exist Three cells.
  • the second threshold is a maximum value of each signal value determined by: the LTE cell in the second cell is the same as the first One cell with the same frequency or the same priority In the case of a frequency cell, a signal value of an LTE cell in the second cell that satisfies an LTE cell reselection condition; a case where the priority of the LTE cell in the second cell is higher than a priority of the first cell And a signal value of the LTE cell in the second cell that satisfies the LTE cell reselection condition; if the priority of the LTE cell in the second cell is lower than the priority of the first cell, the LTE is satisfied.
  • the signal value of the LTE cell in the second cell of the cell reselection condition a maximum value of each signal value determined by: the LTE cell in the second cell is the same as the first One cell with the same frequency or the same priority In the case of a frequency cell, a signal value of an LTE cell in the second cell that satisfies an LTE cell
  • a voice call apparatus including: a first determining module, configured to determine a first signal value of a first cell where a terminal is currently located, and a first neighboring cell to the first cell a second signal value of the second cell; the second determining module is configured to determine a call mode according to the first signal value and the second signal value, and determine the manner from the first cell and the second cell The calling cell that initiates the voice call by the terminal; the calling module is configured to initiate a voice call on the determined calling cell by using the determined calling manner.
  • the second determining module includes: a first determining unit, configured to determine whether the first signal value is greater than or equal to a first threshold; and the first determining unit is configured to determine that the first signal value is greater than Or equal to the first threshold, determining to initiate a voice call on the first cell by using the long-term evolution-based voice service VoLTE.
  • the second determining module further includes: a second determining unit, configured to determine, after the first determining unit determines whether the first signal value is greater than or equal to the first threshold When a signal value is smaller than the first threshold, determining whether a third cell exists in the second cell, where a signal value of the third cell is greater than or equal to a second threshold; and determining, by the second determining unit, When the judgment result of the second judging unit is that, when the third cell is an LTE cell, the voice call is initiated in the third cell by using VoLTE, or when the third cell is a ground of the universal mobile communication system.
  • the radio access network UTRAN cell or the universal mobile communication system/enhanced data rate universal mobile communication system evolves the access network GERAN cell, the circuit domain fallback CSFB is used to initiate a voice call on the third cell.
  • the second determining module further includes: a third determining unit, configured to: after the second determining unit determines whether the third cell exists in the second cell, when the second determining unit If the result of the determination is that there is no existence, it is determined whether the terminal resides in the first cell; and the third determining unit is configured to determine, in the third determining unit, that the terminal resides in the In the case of the first cell, determining to initiate a voice call on the first cell by using VoLTE; and determining, by the third determining unit, that the terminal does not reside in the first In the case of a cell, it is determined that the voice call has failed.
  • a third determining unit configured to: after the second determining unit determines whether the third cell exists in the second cell, when the second determining unit If the result of the determination is that there is no existence, it is determined whether the terminal resides in the first cell
  • the third determining unit is configured to determine, in the third determining unit, that the terminal resides in the In the case of the first cell, determining to
  • the second determining unit includes: a determining subunit, configured to sequentially determine whether there is a signal value in the second cell according to a priority of each cell in the second cell from high to low a cell that is greater than or equal to the second threshold, wherein the LTE cell has the highest priority, the UTRAN cell priority is centered, and the GERAN cell has the lowest priority; and the first determining subunit is set to be the presence signal value in the determining subunit.
  • the cell is greater than or equal to the second threshold, determining that the third cell exists in the second cell; and determining, by the second determining subunit, that the determining result in the determining subunit is a non-existent signal value In the case of a cell that is greater than or equal to the second threshold, it is determined that the third cell does not exist in the second cell.
  • the apparatus further includes: a third determining module, configured to determine, when the LTE cell exists in the second cell, a maximum value of each signal value determined by: determining, as the second threshold: If the LTE cell in the second cell is an inter-frequency cell with the same frequency or priority as the first cell, the LTE cell reselection condition is met.
  • a third determining module configured to determine, when the LTE cell exists in the second cell, a maximum value of each signal value determined by: determining, as the second threshold: If the LTE cell in the second cell is an inter-frequency cell with the same frequency or priority as the first cell, the LTE cell reselection condition is met.
  • a signal value of the LTE cell in the second cell if the priority of the LTE cell in the second cell is higher than the priority of the first cell, the second condition that satisfies the LTE cell reselection condition a signal value of the LTE cell in the cell; if the priority of the LTE cell in the second cell is lower than the priority of the first cell, the LTE in the second cell that satisfies the LTE cell reselection condition The signal value of the cell.
  • the first signal value of the first cell where the terminal is currently located and the second signal value of the second cell adjacent to the first cell are determined by the present invention; according to the first signal value and the second signal Determining a call mode, and determining, from the first cell and the second cell, a call cell in which the terminal initiates a voice call; and using the determined call mode to initiate a voice call on the determined call cell
  • the current cell or the neighboring cell with good quality is selected to initiate a voice call through the signal quality of the cell in which the terminal is currently located and the neighboring cell, and the call is not initiated in the current cell by using VoLTE.
  • the terminal supporting VoLTE directly initiates a PS call when a voice call is poor in signal quality, thereby improving the quality of the call when the terminal initiates a voice call, and improving the user experience.
  • FIG. 1 is a flow chart of a method of voice call according to an embodiment of the present invention.
  • FIG. 2 is a structural block diagram of a voice call apparatus according to an embodiment of the present invention.
  • FIG. 3 is a structural block diagram 1 of a second determining module 24 in a voice call apparatus according to an embodiment of the present invention
  • FIG. 4 is a block diagram 2 of a second determining module 24 in a voice call apparatus according to an embodiment of the present invention
  • FIG. 5 is a structural block diagram 3 of a second determining module 24 in a voice call apparatus according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a second determining unit 42 in a voice call apparatus according to an embodiment of the present invention.
  • FIG. 7 is a block diagram showing a preferred structure of a voice call apparatus according to an embodiment of the present invention.
  • FIG. 8 is a diagram of a terminal application layer setting object according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of a method for determining an LTE voice call mode according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of an implementation of an LTE voice call determining method step S912 according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a voice call method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:
  • Step S102 determining a first signal value of the first cell where the terminal is currently located, and a second signal value of the second cell adjacent to the first cell;
  • Step S104 Determine a call mode according to the first signal value and the second signal value, and determine, from the first cell and the second cell, a call cell that initiates a voice call by the terminal;
  • Step S106 initiating a voice call on the determined calling cell by using the determined calling mode.
  • the terminal may select a current cell or a neighboring cell with better signal quality to initiate a voice call according to the signal value of the current cell and the neighboring cell, instead of blindly in the current cell.
  • the voice call is still initiated, which solves the problem that the terminal supporting the VoLTE in the related technology directly initiates the PS call when the voice call is poor, thereby improving the call quality of the terminal when the voice call is initiated. , to improve the user experience.
  • Step S104 has multiple implementation manners.
  • the terminal may first select a cell with a larger signal value to perform determination according to the first signal value of the first cell and the second signal value of the second cell.
  • the method may be: determining whether the first signal value is greater than or equal to the first threshold; determining that the first signal value is greater than or equal to the first threshold, determining to utilize VoLTE in the first A voice call is initiated on the cell.
  • the terminal before the terminal initiates the voice call, the terminal preferentially determines whether the signal value of the cell where the terminal is currently located is greater than or equal to the first threshold, and if the determination result is yes, using VoLTE in the current
  • the LTE cell initiates a voice call. Therefore, the terminal can initiate a voice call with good signal quality when the existing protocol or standard is changed little.
  • the first threshold may be reasonably set by the relevant personnel according to actual conditions.
  • the method further includes: determining, when the first signal value is less than the first threshold, determining whether a third cell exists in the second cell, The signal value of the third cell is greater than or equal to the second threshold. If the third cell is an LTE cell, the voice call is initiated by using the VoLTE in the third cell, or when the third cell is When a UTRAN cell or a GERAN cell, a voice call is initiated on the third cell using CSFB.
  • the number of cells included in the second cell may be multiple, that is, the first cell where the terminal is located has multiple neighboring cells.
  • the cell type included in the second cell may also be multiple, for example, may be an LTE cell, a UTRAN/GERAN cell.
  • the terminal determines whether the second signal value is greater than or equal to the second threshold.
  • the third cell of the voice call For different types of third cells, corresponding to different calling modes, for example, when the third cell is an LTE cell, the call is initiated using VoLTE, and when the third cell is a UTRAN/GERAN cell, the call is initiated using CSFB.
  • the method further includes: determining, when the determination result is not present, whether the terminal resides in the first cell; Residing in the first small for the terminal In the case of the zone, it is determined that the voice call is initiated on the first cell by using VoLTE; if the result of the determination is that the terminal does not camp on the first cell, the voice call failure is determined.
  • the terminal after determining that the terminal is located in the first cell and the second cell in the neighboring cell, the terminal does not have a cell that meets the threshold value of the signal value, and the terminal determines whether the terminal still resides at this time.
  • the terminal In the first cell, in the case that it is determined that the terminal does not reside in the first cell, it indicates that the terminal has disconnected the LTE network connection, and the voice call fails; when the terminal is still in the first cell at this time, it is only the first cell.
  • the signal quality of the second cell in the neighboring cell is not good, and the terminal selects to initiate a voice call based on VoLTE in the first cell.
  • determining whether a third cell exists in the second cell may be included according to the second cell, because each type of cell, such as an LTE cell, a UTRAN cell, or a GERAN cell, may exist in the second cell.
  • the priority of each cell is determined from high to low, and it is sequentially determined whether there is a cell whose signal value is greater than or equal to the second threshold in the second cell, where the LTE cell has the highest priority, the UTRAN cell priority is centered, and the GERAN cell has the lowest priority.
  • the terminal determines the signal value of each cell according to the priority of each cell in the second cell, where the LTE cell has the highest priority, the UTRAN cell priority is centered, and the GERAN cell has the lowest priority. Since the LTE cell is the most advanced neighboring cell, the priority is determined according to the priority sequence in the optional embodiment, so that the terminal can initiate a voice call in a cell with good signal quality and relatively advanced. Certainly, if there is no LTE cell in the second cell, the terminal skips the LTE cell and judges the signal value of the UTRAN cell according to the priority order.
  • the first threshold and the second threshold may be reasonably set by the relevant personnel according to actual conditions, and when the types of the cells are different, the second threshold of each cell may also be different.
  • the second threshold when an LTE cell exists in the second cell, the second threshold may be a maximum value of each signal value determined by: the LTE cell in the second cell is the first cell In the case of an inter-frequency cell having the same frequency or the same priority, the signal value of the LTE cell in the second cell that satisfies the LTE cell reselection condition; the priority of the LTE cell in the second cell is higher than the priority of the first cell In the case of the LTE cell in the second cell that satisfies the LTE cell reselection condition; if the priority of the LTE cell in the second cell is lower than the priority of the first cell, the LTE cell reselection condition is satisfied.
  • the signal value of the LTE cell in the second cell As a cell with the same type as the first cell, the LTE cell in the neighboring cell needs to meet the conditions of the signal value, and also needs to satisfy the condition of the LTE cell co-frequency or inter-frequency cell reselection.
  • the second threshold is the maximum value of the signal value of the LTE cell in the second cell calculated in the above three cases, so that the LTE cell in the second cell is prioritized with the first cell.
  • the same or different, the same frequency or the different frequency can satisfy the LTE cell reselection condition, so that the success rate of the voice call initiated by the terminal can be guaranteed to a certain extent.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a voice call device is further provided, which is used to implement the above embodiments and preferred embodiments.
  • the description has been omitted and will not be described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 2 is a block diagram showing the structure of a voice call apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes a first determining module 22, a second determining module 24, and a calling module 26. The apparatus will be described below.
  • the first determining module 22 is configured to determine a first signal value of the first cell where the terminal is currently located and a second signal value of the second cell that is adjacent to the first cell; and the second determining module 24 is connected to the first determining The module 22 is configured to determine a call mode according to the first signal value and the second signal value, and determine a call cell from which the terminal initiates a voice call from the first cell and the second cell; and the calling module 26 is connected to the second determining module 24 And set to initiate a voice call on the determined calling cell using the determined calling mode.
  • FIG. 3 is a structural block diagram 1 of a second determining module 24 in a voice call apparatus according to an embodiment of the present invention.
  • the second determining module 24 includes a first determining unit 32 and a first determining unit 34. The second determination module 24 will be described.
  • the first determining unit 32 is configured to determine whether the first signal value is greater than or equal to the first threshold.
  • the first determining unit 34 is connected to the first determining unit 32, and is configured to determine that the first signal value is greater than or equal to the first threshold. Determining to initiate a voice call on the first cell using VoLTE.
  • FIG. 4 is a second structural block diagram of a second determining module 24 in a voice call apparatus according to an embodiment of the present invention.
  • the second determining module 24 includes a second determination in addition to all the units in FIG. The unit 42 and the second determining unit 44 are described below for the second determining module 24.
  • the second determining unit 42 is connected to the first determining unit 32, and is configured to determine, after determining that the first signal value is greater than or equal to the first threshold, after the first determining unit 32 determines that the first signal value is less than the first threshold. Whether there is a third cell in the second cell, where the signal value of the third cell is greater than or equal to the second threshold; the second determining unit 44 is connected to the second determining unit 42 and is set to be determined by the second determining unit 42.
  • the result is that, when the third cell is an LTE cell, a voice call is initiated in the third cell by using VoLTE, or a voice call is initiated on the third cell by using CSFB when the third cell is a UTRAN cell or a GERAN cell.
  • FIG. 5 is a structural block diagram 3 of a second determining module 24 in a voice call apparatus according to an embodiment of the present invention.
  • the second determining module 24 includes a third judgment in addition to all the units in FIG. The unit 52, the third determining unit 54, and the fourth determining unit 56, the second determining module 24 will be described below.
  • the third determining unit 52 is connected to the second determining unit 42 and configured to determine whether the terminal resides after the second determining unit 42 determines whether there is a third cell in the second cell and the determination result is non-existent.
  • the third determining unit 54 is connected to the third determining unit 52, and is configured to determine to use VoLTE in the first cell if the result of the determination by the third determining unit 52 is that the terminal camps on the first cell.
  • the fourth determining unit 56 is connected to the third determining unit 52, and is configured to determine that the voice call fails if the determining result of the third determining unit 52 is that the terminal does not camp on the first cell.
  • FIG. 6 is a structural block diagram of a second determining unit 42 in a voice call apparatus according to an embodiment of the present invention.
  • the second determining unit 42 includes a determining subunit 62, a first determining subunit 64, and a second determining. Subunit 66, the second judging unit 42 will be described below.
  • the determining sub-unit 62 is configured to sequentially determine, according to the order of the priorities of the cells in the second cell from high to low, whether there is a cell in the second cell that has a signal value greater than or equal to a second threshold, where the LTE cell priority The highest UTRAN cell priority is centered, and the GERAN cell has the lowest priority; the first determining sub-unit 64 is connected to the determining sub-unit 62, and is set to be determined by the determining sub-unit 62 that the presence signal value is greater than or equal to the second threshold.
  • the second determining sub-unit 66 is connected to the determining sub-unit 62, and is set to determine that the non-existence signal value is greater than or equal to the second in the determining sub-unit 62.
  • a threshold cell it is determined that there is no third cell in the second cell.
  • FIG. 7 is a block diagram showing a preferred structure of a voice call apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes a third determining module 72 in addition to all the modules in FIG. Description.
  • the third determining module 72 is connected to the second determining unit 42 and configured to: when the LTE cell exists in the second cell, the maximum value of each signal value determined by the following manner is the second threshold: in the second cell
  • the LTE cell is a signal value of an LTE cell in a second cell that satisfies an LTE cell reselection condition when the LTE cell is an inter-frequency cell having the same frequency or priority as the first cell; and the LTE cell in the second cell is prioritized If the level is higher than the priority of the first cell, the signal value of the LTE cell in the second cell that satisfies the LTE cell reselection condition; the priority of the LTE cell in the second cell is lower than the priority of the first cell In the case, the signal value of the LTE cell in the second cell that satisfies the LTE cell reselection condition.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • the SRVCC can ensure smooth handover between the IMS-controlled VoIP voice and the CS domain voice
  • the precondition is that the PS Call is first performed on the LTE. If the LTE signal is weak when the user initiates a PS call on LTE, the PS Call needs to be established first and then switched to the UTRAN/GERAN network through the SRVCC. When the LTE signal is weak, establishing a PS call service obviously affects the efficiency of voice connection and the quality of voice calls.
  • the voice call device of the embodiment of the present invention will first be described below.
  • the voice call device in this embodiment is located in the terminal and is implemented by the upper device of the terminal and the underlying wireless protocol technology.
  • the embodiment of the present invention takes a dual-mode or multi-mode terminal supporting LTE and UTRAN/GERAN access capabilities as an example, and the terminal supports VoLTE and CSFB functions at the same time.
  • the embodiment of the present invention includes a 4G call setting in the upper layer call setting of the terminal, and includes a VoLTE and CSFB function menu selection in the 4G call setting.
  • the voice call device allows the terminal to simultaneously select VoLTE and CSFB, and allows the terminal to automatically enable the Device.
  • FIG. 8 is a diagram of a setting object of a terminal application layer according to an embodiment of the present invention.
  • the function of manually selecting the device is taken as an example, as shown in FIG.
  • Object 1 Add 4G call function settings in the Android system call settings interface
  • Object 2 Call function settings include VoLTE priority, CSFB priority, and simultaneous use of VoLTE and CSFB.
  • VoLTE priority the current terminal is registered in the LTE network. If the VoLTE priority is selected, the voice call is made by using VoLTE preferentially, that is, the PS call is directly performed;
  • CSFB priority If CSFB priority is selected, it will fall back directly to the UTRAN/GERAN network for voice call in the CS domain;
  • VoLTE and CSFB Simultaneous use of VoLTE and CSFB: If you select both VoLTE and CSFB, the terminal starts to measure and maintain a storage table of neighboring cell signal values, which is used to store the signal value of the neighboring cell measured after the device is started. Then, it is judged by the wireless protocol layer voice call determination method in the present invention, and the voice call is performed using the optimal voice call mode.
  • the terminal needs to maintain a storage table of the signal value of the neighboring area, and store the signal value of the neighboring area measured after the device is started.
  • the terminal After registering to the LTE cell, the terminal performs measurement on the signal value of the current LTE cell and the neighboring cell, for example, Reference Signal Receiving Power (RSRP), and stores the measured value in the foregoing storage table. in.
  • RSRP Reference Signal Receiving Power
  • the terminal continuously measures the RSRP of the current LTE cell and the neighboring cell by a predetermined rule, and updates the RSRP value of the cells in the storage table.
  • the way to start the device can also be automated.
  • the terminal When the LTE signal is strong, the terminal automatically selects the VoLTE priority mode; when the LTE network is unstable but the UTRAN/GERAN signal is strong, the CSFB mode can be automatically selected; if the terminal needs to be frequently between the LTE and UTRAN/GERAN cells Mobile can automatically activate the device.
  • the embodiment of the present invention further describes a method for determining an LTE voice call mode (that is, the voice call method of the foregoing embodiment of the present invention): after the terminal initiates dialing, the terminal determines whether to use VoLTE according to the signal threshold of the serving cell and the neighboring cell.
  • CSFB makes a voice call, specifically:
  • the VoLTE function is used to make a voice call
  • the terminal measurement measures the neighboring area according to the order of LTE/UTRAN/GERAN;
  • the call mode is determined according to the format of the neighboring cell. If the neighboring cell is an LTE cell, the voice call is performed by using the VoLTE function. If the neighboring cell is a UTRAN/GERAN cell, the voice call is initiated by using CSFB.
  • the voice call device is enabled.
  • the network needs to notify the network to send the measurement configuration, so that the terminal starts measuring the signal values of the serving cell and the neighboring cell, and the terminal according to the measurement.
  • 9 is an LTE voice caller according to an embodiment of the present invention. A flowchart of the determination method of the formula, as shown in FIG. 9, the determination method includes the following steps:
  • Step S902 The terminal initiates an LTE network registration.
  • Step S904 The terminal sends the device information to the network in an over-the-air (OTA) message, and tells the network side terminal that the device is enabled.
  • OTA over-the-air
  • Step S906 After the network side receives the OTA information and confirms that the terminal has enabled the device, the eNB notifies the measurement configuration message to the UE by using the measConfig cell of the RRCConnectionReconfigurtion message band.
  • Step S908 The terminal starts to perform measurement, and the terminal measures the RSRP value of the current LTE serving cell and the neighboring cell; wherein the neighboring cell includes an LTE cell, a UTRAN cell, and a GERAN cell.
  • the RSRP value of the current serving cell is S1
  • the RSRP value of the LTE neighboring cell is S2
  • the signal value of the UTRAN neighboring cell is S3
  • the signal value of the GERAN cell is S4.
  • Step S910 The terminal stores the measurement result in the neighboring area signal value storage table maintained by the terminal;
  • Step S912 The terminal determines the voice call mode according to the measured signal values of the serving cell and the neighboring cell.
  • step S912 is a flowchart of implementing an LTE voice call determining method step S912 according to an embodiment of the present invention. As shown in FIG. 10, step S912 includes the following steps:
  • Step S1002 The terminal initiates a voice call.
  • Step S1004 If the RSRP value (S1, that is, the first signal value in the foregoing embodiment) of the current LTE serving cell is greater than or equal to a certain threshold (Ss_Lcell, that is, the first threshold in the foregoing embodiment), the terminal uses the VoLTE function to perform voice. Call, that is, the PS call process is performed at this time;
  • Step S1006 If the RSRP value (S1) of the current LTE serving cell is smaller than the Ss_cell, and the LTE neighboring cell signal value (S2, that is, the second cell of the foregoing embodiment is the second threshold of the LTE cell) is greater than the Sn_Lcell, the terminal is heavy at this time. Selecting to a neighboring LTE cell and initiating a VoLTE voice call on the LTE neighboring cell;
  • Step S1008 If the LTE neighbor cell signal value (S2) is smaller than the Sn_Lcell, and the UTRAN neighbor cell signal value is greater than or equal to the Sn_Ucell (that is, the second cell in the foregoing embodiment is the second threshold of the UTRAN cell), the terminal uses the CSFB technology to fall back to the UTRAN.
  • the network makes a voice call;
  • Step S1010 If the UTRAN neighbor cell signal value is smaller than the Sn_Ucell, and the GERAN neighbor cell signal value is greater than or equal to the Sn_Gcell (that is, the second cell in the foregoing embodiment is the second threshold of the GERAN cell), the terminal uses the CSFB technology to fall back to the GERAN network for voice. call;
  • Step S1012 If the signal value of the GERAN neighboring cell is smaller than the Sn_Gcell, the terminal continues to determine. At this time, the terminal still resides in the LTE network, and the terminal initiates a VoLTE voice call in the current serving cell, otherwise the call fails.
  • Ss_Lcell there are several thresholds, Ss_Lcell, Sn_Lcell, Sn_Ucell, and Sn_Gcell, where Ss_Lcell is used to determine the current LTE serving cell signal value, Sn_Lcell is used to determine the LTE neighboring cell signal value, and Sn_Ucell is used to determine the UTRAN neighboring cell.
  • the signal value, Sn_Gcell is used to determine the signal value of the GERAN neighbor.
  • Sn_Lcell Both Sn_Lcell and Ss_Lcell are signal thresholds for the LTE cell, but in addition to satisfying the value of Ss_Lcell (according to the signal quality of the cell), the Sn_Lcell needs to meet the 3GPP LTE co-frequency or inter-frequency. Selected conditions.
  • the reselection condition is judged according to the R criterion, that is, Rn>Rs, and S2 is only required to be larger than S1;
  • Qrxlevmeas value is the S1 or S2 we defined above;
  • the neighboring cell is a cell with a lower priority
  • the Srxlev of the current serving cell is smaller than threshServingLow
  • the Srxlev of the target cell is greater than the threshold parameter threshXLow
  • the state of the determining method considers that the S1 value is smaller than threshServingLow-Qrxlevmin- Pcompensation, the signal value S1 of the current serving cell is greater than Ss_Lcell, and the value of threshServingLow should be greater than (Ss_Lcell+Qrxlevmin+Pcompensation)/2; at this time, S2 is greater than threshXLow-Qrxlevmin-Pcompensation;
  • Ss_Lcell/Sn-Ucell/Sn-Gcell The purpose of the present application is to use CSFB to ensure voice call quality when the LTE cell signal quality is weak, and the UTRAN/GERAN cell signal quality is good, so for Ss_Lcell/Sn-Ucell
  • the threshold of /Sn-Gcell is not based on the reselection condition, but is based on the signal quality of the UTRAN/GERAN cell; therefore, the Ss_Lcell takes a weak signal value, and the Sn-Ucell/Sn-Gcell can take a strong signal value. .
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • S1 Determine a first signal value of the first cell where the terminal is currently located, and a second signal value of the second cell that is adjacent to the first cell.
  • S2 Determine a call mode according to the first signal value and the second signal value, and determine, from the first cell and the second cell, a call cell that initiates a voice call by the terminal;
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the processor executes the above S1-S3 according to the stored program code in the storage medium.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the voice call method and apparatus have the following beneficial effects: the terminal can select a current cell or a neighboring cell with better quality to initiate a voice call, and solve the signal quality of the terminal supporting VoLTE in the related art.
  • the problem of the PS call is directly initiated, thereby improving the quality of the call when the terminal initiates the voice call, and improving the user experience.

Abstract

本发明提供了一种语音呼叫方法及装置，其中，该语音呼叫方法包括：确定终端当前所在的第一小区的第一信号值和与该第一小区相邻的第二小区的第二信号值；根据第一信号值和第二信号值确定呼叫方式，以及从第一小区和第二小区中确定终端发起语音呼叫的呼叫小区；利用确定的呼叫方式在确定的呼叫小区上发起语音呼叫。通过本发明，终端可以选择质量较好的当前小区或者邻区发起语音呼叫，解决了相关技术中支持VoLTE的终端在信号质量较差时进行语音通话时会直接发起PS call的问题，进而达到了提高终端在发起语音呼叫时的通话质量，提高了用户的体验度。

Description

语音呼叫方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种语音呼叫方法及装置。
背景技术
电路域回落(Circuit Switched FallBack，简称为CSFB)用于在终端注册到长期演进(Long Term Evolution，简称为LTE)网络时，终端可以通过CSFB回落到电路域(Circuit Switching Domain，简称为CS域)进行话音业务等CS业务。
基于长期演进的语音业务(Voice over LTE，简称为VoLTE)是一种IP数据传输技术，它无需2G/3G网，将全部业务承载于4G网络上。当终端支持VoLTE时，终端可通过LTE及网际协议(Internet Protocol，简称为IP)多媒体子系统(IP Multimedia Subsystem，简称为IMS)直接发起分组交换呼叫(Packet Switch Call，简称为PS Call)，可实现数据与语音业务在同一网络(即LTE网络)下的统一。
由于当前各大运营商对于LTE/IMS网络部署正在进行中，所以会出现部分地区已部署LTE/IMS，但是有的地区网络只支持CSFB。因此为了实现UE在LTE/Pre-LTE网络和2G/3G CS网络之间移动时保证UE在IMS控制的IP承载(Voice Over IP，简称为VoIP)语音和CS域语音之间的平滑切换，第三代合作伙伴计划(3rd Generation Partnership Project，简称为3GPP)提出双模单待无线语音呼叫连续性(Single Radio Voice Call Continuity，简称为SRVCC)技术。当用户在使用LTE网络进行语音通话过程中，移动到LTE信号较弱，但GERAN/UTRAN网络信号覆盖较好的区域时，为了保证语音呼叫连续性(Voice Call Continuity，简称为VCC)，需要将话路由LTE切换到全球移动通信系统(Global System for Mobile Communication，简称为GSM)/增强型数据速率通用GSM(Enhanced Data Rate for GSM Evolution，简称为EDGE)演进接入网(GSM/EDGE Radio Access，简称为GERAN)/通用陆地无线接入网(Universal Terrestrial Radio Access Network，简称为UTRAN)。由于目前还没有能够在LTE和GERAN/UTRAN同时附着并收发数据的终端，因此LTE和2G/3G之前的业务连续性都基于双模单待(Single Radio)模式。
当前具有LTE和UTRAN/GERAN接入能力的双模或者多模终端主要是通过CSFB及VoLTE两种技术进行语音通话。CSFB主要是由2/3G电路域提供语音，VOLTE方案通过IMS来实现LTE分组域的语音呼叫并通过SRVCC功能来保障语音平滑切换。当前3GPP协议中对LTE呼叫时没有进行判定，而是在呼叫之前就确定要么是进行PS call，要么是直接通过CSFB到2G/3G进行CS call。
SRVCC虽然可以保证终端在IMS控制的VoIP语音和CS域语音之间的平滑切换，但前提条件是首先要在LTE上进行PS Call。如果用户在LTE上发起PS call时LTE信号就很弱， 此时需要先建立PS Call然后再通过SRVCC换到UTRAN/GERAN网络。当LTE信号很弱时建立PS call业务显然会影响语音接通的效率以及语音通话的质量。
针对相关技术中支持VoLTE的终端在信号质量较差时进行语音通话时会直接发起PS call的问题，目前尚未提出解决方案。
发明内容
本发明提供了一种语音呼叫方法及装置，以至少解决相关技术中支持VoLTE的终端在信号质量较差时进行语音通话时会直接发起PS call的问题。
根据本发明的一个方面，提供了一种语音呼叫方法，包括：确定终端当前所在的第一小区的第一信号值和与所述第一小区相邻的第二小区的第二信号值；根据所述第一信号值和所述第二信号值确定呼叫方式，以及从所述第一小区和所述第二小区中确定所述终端发起语音呼叫的呼叫小区；利用确定的所述呼叫方式在确定的所述呼叫小区上发起语音呼叫。
可选地，根据所述第一信号值和所述第二信号值确定所述呼叫方式，以及从所述第一小区和所述第二小区中确定所述终端发起语音呼叫的呼叫小区包括：判断所述第一信号值是否大于或等于第一阈值；在确定所述第一信号值大于或等于所述第一阈值时，确定利用基于长期演进的语音业务VoLTE在所述第一小区上发起语音呼叫。
可选地，在判断所述第一信号值是否大于或等于所述第一阈值之后，还包括：在确定所述第一信号值小于所述第一阈值时，判断所述第二小区中是否存在第三小区，其中，所述第三小区的信号值大于或等于第二阈值；在判断结果为存在的情况下，当所述第三小区为LTE小区时，利用VoLTE在所述第三小区发起语音呼叫，或者当所述第三小区为通用移动通信系统地面无线接入网UTRAN小区或通用移动通信系统/增强型数据速率通用移动通信系统演进接入网GERAN小区时，利用电路域回落CSFB在所述第三小区上发起语音呼叫。
可选地，在判断所述第二小区中是否存在所述第三小区之后，还包括：当判断结果为不存在的情况下，判断所述终端是否驻留在所述第一小区；在判断结果为所述终端驻留在所述第一小区的情况下，确定利用VoLTE在所述第一小区上发起语音呼叫；在判断结果为所述终端没有驻留在所述第一小区的情况下，确定语音呼叫失败。
可选地，判断所述第二小区中是否存在所述第三小区包括：按照所述第二小区中的各小区的优先级从高到低的顺序，依次判断所述第二小区中是否存在信号值大于或等于第二阈值的小区，其中，LTE小区优先级最高、UTRAN小区优先级居中，GERAN小区优先级最低；在判断结果为存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中存在所述第三小区；在判断结果为不存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中不存在所述第三小区。
可选地，当所述第二小区中存在LTE小区时，所述第二阈值为通过如下方式确定的各信号值中的最大值：在所述第二小区中的LTE小区为与所述第一小区同频或者优先级相同的异 频小区的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值；所述第二小区中的LTE小区的优先级高于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值；所述第二小区中的LTE小区的优先级低于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值。
根据本发明的另一个方面，还提供了一种语音呼叫装置，包括：第一确定模块，设置为确定终端当前所在的第一小区的第一信号值和与所述第一小区相邻的第二小区的第二信号值；第二确定模块，设置为根据所述第一信号值和所述第二信号值确定呼叫方式，以及从所述第一小区和所述第二小区中确定所述终端发起语音呼叫的呼叫小区；呼叫模块，设置为利用确定的所述呼叫方式在确定的所述呼叫小区上发起语音呼叫。
可选地，所述第二确定模块包括：第一判断单元，设置为判断所述第一信号值是否大于或等于第一阈值；第一确定单元，设置为在确定所述第一信号值大于或等于所述第一阈值时，确定利用基于长期演进的语音业务VoLTE在所述第一小区上发起语音呼叫。
可选地，所述第二确定模块还包括：第二判断单元，设置为在所述第一判断单元判断所述第一信号值是否大于或等于所述第一阈值之后，在确定所述第一信号值小于所述第一阈值时，判断所述第二小区中是否存在第三小区，其中，所述第三小区的信号值大于或等于第二阈值；第二确定单元，设置为在所述第二判断单元的判断结果为存在的情况下，当所述第三小区为LTE小区时，利用VoLTE在所述第三小区发起语音呼叫，或者当所述第三小区为通用移动通信系统地面无线接入网UTRAN小区或通用移动通信系统/增强型数据速率通用移动通信系统演进接入网GERAN小区时，利用电路域回落CSFB在所述第三小区上发起语音呼叫。
可选地，所述第二确定模块还包括：第三判断单元，设置为在所述第二判断单元判断所述第二小区中是否存在所述第三小区之后，当所述第二判断单元的判断结果为不存在的情况下，判断所述终端是否驻留在所述第一小区；第三确定单元，设置为在所述第三判断单元的判断结果为所述终端驻留在所述第一小区的情况下，确定利用VoLTE在所述第一小区上发起语音呼叫；第四确定单元，设置为在所述第三判断单元的判断结果为所述终端没有驻留在所述第一小区的情况下，确定语音呼叫失败。
可选地，所述第二判断单元包括：判断子单元，设置为按照所述第二小区中的各小区的优先级从高到低的顺序，依次判断所述第二小区中是否存在信号值大于或等于第二阈值的小区，其中，LTE小区优先级最高、UTRAN小区优先级居中，GERAN小区优先级最低；第一确定子单元，设置为在所述判断子单元的判断结果为存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中存在所述第三小区；第二确定子单元，设置为在所述判断子单元的判断结果为不存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中不存在所述第三小区。
可选地，所述装置还包括：第三确定模块，设置为当所述第二小区中存在LTE小区时，将通过如下方式确定的各信号值中的最大值确定为所述第二阈值：在所述第二小区中的LTE小区为与所述第一小区同频或者优先级相同的异频小区的情况下，满足LTE小区重选条件的 所述第二小区中的LTE小区的信号值；所述第二小区中的LTE小区的优先级高于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值；所述第二小区中的LTE小区的优先级低于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值。
通过本发明，采用确定终端当前所在的第一小区的第一信号值和与所述第一小区相邻的第二小区的第二信号值；根据所述第一信号值和所述第二信号值确定呼叫方式，以及从所述第一小区和所述第二小区中确定所述终端发起语音呼叫的呼叫小区；利用确定的所述呼叫方式在确定的所述呼叫小区上发起语音呼叫的方式，在进行语音呼叫之前，通过终端当前所在的小区与邻区的信号质量，选择质量较好的当前小区或者邻区发起语音呼叫，而不会一味地在当前小区采用VoLTE发起呼叫，解决了相关技术中支持VoLTE的终端在信号质量较差时进行语音通话时会直接发起PS call的问题，进而达到了提高终端在发起语音呼叫时的通话质量，提高了用户的体验度。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的语音呼叫方法的流程图；
图2是根据本发明实施例的语音呼叫装置的结构框图；
图3是根据本发明实施例的语音呼叫装置中第二确定模块24的结构框图一；
图4是根据本发明实施例的语音呼叫装置中第二确定模块24的结构框图二；
图5是根据本发明实施例的语音呼叫装置中第二确定模块24的结构框图三；
图6是根据本发明实施例的语音呼叫装置中第二判断单元42的结构框图；
图7是根据本发明实施例的语音呼叫装置的优选结构框图；
图8是根据本发明实施例的终端应用层设置对象图；
图9是根据本发明实施例进行LTE语音呼叫方式的判定方法的流程图；
图10是根据本发明实施例的LTE语音呼叫判定方法步骤S912的实现流程图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用 于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种语音呼叫方法，图1是根据本发明实施例的语音呼叫方法的流程图，如图1所示，该流程包括如下步骤：
步骤S102，确定终端当前所在的第一小区的第一信号值和与该第一小区相邻的第二小区的第二信号值；
步骤S104，根据第一信号值和第二信号值确定呼叫方式，以及从第一小区和第二小区中确定终端发起语音呼叫的呼叫小区；
步骤S106，利用确定的呼叫方式在确定的呼叫小区上发起语音呼叫。
通过上述步骤，在进行语音呼叫之前，终端可以根据当前所在的小区和邻区的信号值，选择一个信号质量较好的当前小区或者邻区进行语音呼叫的发起，而不是一味地在当前小区中信号质量较差时仍发起语音呼叫，解决了相关技术中支持VoLTE的终端在信号质量较差时进行语音通话时会直接发起PS call的问题，进而达到了提高终端在发起语音呼叫时的通话质量，提高了用户的体验度。
步骤S104有多种实现方式，例如，终端可以根据第一小区的第一信号值和第二小区的第二信号值的大小，首先选择信号值较大的小区进行判断。在一个可选的实施例中，可以采取如下方式实现：判断第一信号值是否大于或等于第一阈值；在确定第一信号值大于或等于所述第一阈值时，确定利用VoLTE在第一小区上发起语音呼叫。在该可选实施例中，当终端在发起语音呼叫前，终端优先判断该终端当前所在的小区的信号值是否大于或者等于第一阈值，并在判断结果为是的情况下，使用VoLTE在当前LTE小区发起语音呼叫。从而可以在对现有协议或者标准改动较小的情况下，实现终端在信号质量较好的情况下发起语音呼叫。其中，第一阈值可以根据实际情况由相关人员进行合理设置。
在一个可选的实施例中，在判断第一信号值是否大于或等于第一阈值之后，还包括：在确定第一信号值小于第一阈值时，判断第二小区中是否存在第三小区，其中，该第三小区的信号值大于或等于第二阈值；在判断结果为存在的情况下，当第三小区为LTE小区时，利用VoLTE在第三小区发起语音呼叫，或者当第三小区为UTRAN小区或GERAN小区时，利用CSFB在第三小区上发起语音呼叫。在该可选实施例中，第二小区中包含的小区数量可以是多个，也即，该终端所在的第一小区拥有多个邻区。第二小区中包含的小区类型也可以是多种，例如，可以为LTE小区，UTRAN/GERAN小区。当终端确定不能在第一小区通过VoLTE发起语音呼叫后，就会根据第二小区的第二信号值进行判断：在该第二信号值大于或等于第二阈值的情况下，终端确定存在符合发起语音呼叫的第三小区。对于不同类型的第三小区，对应着不同的呼叫方式，例如，当第三小区为LTE小区时，使用VoLTE发起呼叫，当第三小区为UTRAN/GERAN小区时，使用CSFB发起呼叫。
在一个可选的实施例中，在判断第二小区中是否存在第三小区之后，还包括：当判断结果为不存在的情况下，判断终端是否驻留在所述第一小区；在判断结果为终端驻留在第一小 区的情况下，确定利用VoLTE在第一小区上发起语音呼叫；在判断结果为终端没有驻留在第一小区的情况下，确定语音呼叫失败。在该可选实施例中，终端经过判断后发现该终端当前所在的第一小区和邻区第二小区中，都不存在满足信号值阈值条件的小区，终端此时判断该终端是否还驻留在第一小区，在确定终端没有驻留在第一小区的情况下，说明该终端已经断开LTE网络连接，语音呼叫失败；当终端此时还注留在第一小区，说明只是第一小区和邻区第二小区的信号质量都不好，终端此时选择在第一小区基于VoLTE发起语音呼叫。
在一个可选的实施例中，由于第二小区中可能存在各个类型的小区，例如LTE小区、UTRAN小区或GERAN小区，判断第二小区中是否存在第三小区可以包括：按照第二小区中的各小区的优先级从高到低的顺序，依次判断第二小区中是否存在信号值大于或等于第二阈值的小区，其中，LTE小区优先级最高、UTRAN小区优先级居中，GERAN小区优先级最低；在判断结果为存在信号值大于或等于第二阈值的小区的情况下，确定第二小区中存在第三小区；在判断结果为不存在信号值大于或等于第二阈值的小区的情况下，确定第二小区中不存在第三小区。在该可选实施例中，终端依据第二小区中各小区的优先级，对各小区的信号值进行判断，其中，LTE小区优先级最高、UTRAN小区优先级居中，GERAN小区优先级最低。由于LTE小区是发展最为先进的邻小区，按照该可选实施例中的优先级顺序进行判断，可以保证终端在信号质量好、相对先进的小区中发起语音呼叫。当然，如果第二小区中不存在LTE小区的话，终端就会跳过LTE小区，依据优先级顺序对UTRAN小区的信号值进行判断。
以上各个实施例中，第一阈值和第二阈值可以是相关人员根据实际情况合理设置的，并且各个小区的类型不同时，各个小区的第二阈值也可以不尽相同。在一个可选的实施例中，当第二小区中存在LTE小区时，第二阈值可以为通过如下方式确定的各信号值中的最大值：在第二小区中的LTE小区为与第一小区同频或者优先级相同的异频小区的情况下，满足LTE小区重选条件的第二小区中的LTE小区的信号值；第二小区中的LTE小区的优先级高于第一小区的优先级的情况下，满足LTE小区重选条件的第二小区中的LTE小区的信号值；第二小区中的LTE小区的优先级低于第一小区的优先级的情况下，满足LTE小区重选条件的第二小区中的LTE小区的信号值。邻区LTE小区作为与第一小区类型相同的小区，不仅仅要满足信号值的条件，还需要满足LTE小区同频或者异频小区重选的条件。在该可选的实施例中，第二阈值为以上三种情况下计算出的第二小区中LTE小区的信号值的最大值，这样不管第二小区中的LTE小区是与第一小区优先级相同或者不同、同频或者异频，都可以满足LTE小区重选条件，从而可以在一定程度上保证终端发起语音呼叫的成功率。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
在本实施例中还提供了一种语音呼叫装置，该装置用于实现上述实施例及优选实施方式， 已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图2是根据本发明实施例的语音呼叫装置的结构框图，如图2所示，该装置包括第一确定模块22、第二确定模块24和呼叫模块26，下面对该装置进行说明。
第一确定模块22，设置为确定终端当前所在的第一小区的第一信号值和与第一小区相邻的第二小区的第二信号值；第二确定模块24，连接于上述第一确定模块22，设置为根据第一信号值和第二信号值确定呼叫方式，以及从第一小区和第二小区中确定终端发起语音呼叫的呼叫小区；呼叫模块26，连接于上述第二确定模块24，设置为利用确定的呼叫方式在确定的呼叫小区上发起语音呼叫。
图3是根据本发明实施例的语音呼叫装置中第二确定模块24的结构框图一，如图3所示，该第二确定模块24包括第一判断单元32和第一确定单元34，下面对该第二确定模块24进行说明。
第一判断单元32，设置为判断第一信号值是否大于或等于第一阈值；第一确定单元34，连接于第一判断单元32，设置为在确定第一信号值大于或等于第一阈值时，确定利用VoLTE在第一小区上发起语音呼叫。
图4是根据本发明实施例的语音呼叫装置中第二确定模块24的结构框图二，如图4所示，该第二确定模块24除了包括图3中的所有单元外，还包括第二判断单元42和第二确定单元44，下面对该第二确定模块24进行说明。
第二判断单元42，连接于上述第一判断单元32，设置为在第一判断单元32判断第一信号值是否大于或等于第一阈值之后，在确定第一信号值小于第一阈值时，判断第二小区中是否存在第三小区，其中，第三小区的信号值大于或等于第二阈值；第二确定单元44，连接于上述第二判断单元42，设置为在第二判断单元42的判断结果为存在的情况下，当第三小区为LTE小区时，利用VoLTE在第三小区发起语音呼叫，或者当第三小区为UTRAN小区或GERAN小区时，利用CSFB在第三小区上发起语音呼叫。
图5是根据本发明实施例的语音呼叫装置中第二确定模块24的结构框图三，如图5所示，该第二确定模块24除了包括图4中的所有单元外，还包括第三判断单元52、第三确定单元54和第四确定单元56，下面对该第二确定模块24进行说明。
第三判断单元52，连接于上述第二判断单元42，设置为在第二判断单元42判断第二小区中是否存在第三小区之后，且判断结果为不存在的情况下，判断终端是否驻留在第一小区；第三确定单元54，连接于上述第三判断单元52，设置为在第三判断单元52的判断结果为终端驻留在第一小区的情况下，确定利用VoLTE在第一小区上发起语音呼叫；第四确定单元56，连接于上述第三判断单元52，设置为在第三判断单元52的判断结果为终端没有驻留在第一小区的情况下，确定语音呼叫失败。
图6是根据本发明实施例的语音呼叫装置中第二判断单元42的结构框图，如图6所示，该第二判断单元42包括判断子单元62、第一确定子单元64和第二确定子单元66，下面对该第二判断单元42进行说明。
判断子单元62，设置为按照第二小区中的各小区的优先级从高到低的顺序，依次判断第二小区中是否存在信号值大于或等于第二阈值的小区，其中，LTE小区优先级最高、UTRAN小区优先级居中，GERAN小区优先级最低；第一确定子单元64，连接于上述判断子单元62，设置为在判断子单元62的判断结果为存在信号值大于或等于第二阈值的小区的情况下，确定第二小区中存在第三小区；第二确定子单元66，连接于上述判断子单元62，设置为在判断子单元62的判断结果为不存在信号值大于或等于第二阈值的小区的情况下，确定第二小区中不存在第三小区。
图7是根据本发明实施例的语音呼叫装置的优选结构框图，如图7所示，该装置除了包括图4中的所有模块之外，还包括第三确定模块72，下面对该装置进行说明。
第三确定模块72，连接于第二判断单元42，设置为当第二小区中存在LTE小区时，通过如下方式确定的各信号值中的最大值为所述第二阈值：在第二小区中的LTE小区为与述第一小区同频或者优先级相同的异频小区的情况下，满足LTE小区重选条件的第二小区中的LTE小区的信号值；第二小区中的LTE小区的优先级高于第一小区的优先级的情况下，满足LTE小区重选条件的第二小区中的LTE小区的信号值；第二小区中的LTE小区的优先级低于第一小区的优先级的情况下，满足LTE小区重选条件的第二小区中的LTE小区的信号值。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
下面结合具体实施环境，对本发明实施例的语音呼叫方法和装置进行说明。
相关技术中，SRVCC虽然可以保证终端在IMS控制的VoIP语音和CS域语音之间的平滑切换，但前提条件是首先要在LTE上进行PS Call。如果用户在LTE上发起PS call时LTE信号就很弱，此时需要先建立PS Call然后再通过SRVCC换到UTRAN/GERAN网络。当LTE信号很弱时建立PS call业务显然会影响语音接通的效率以及语音通话的质量。
下面首先对本发明实施例的语音呼叫装置进行说明。该实施例中的语音呼叫装置位于终端中，由终端上层装置和底层无线协议技术来实现。本发明实施例以支持LTE和UTRAN/GERAN接入能力的双模或者多模终端为例，且终端同时支持VoLTE、CSFB功能。
本发明实施例在终端上层通话设置中包含4G通话设置，在4G通话设置中包含VoLTE、CSFB功能菜单选择，本发明实施例中语音呼叫装置允许终端同时选择VoLTE和CSFB，并允许终端自动启用该装置。
依据上述描述，本实施例提供了终端上层设置的方法，图8是根据本发明实施例的终端应用层设置对象图，以手动选择该装置的功能为例，如图8所示，具体为：
对象1：Android系统通话设置界面中增加4G通话功能设置；
对象2：通话功能设置包括VoLTE优先、CSFB优先、同时使用VoLTE和CSFB。
下面对该通话功能设置的各个选项进行功能说明。
VoLTE优先：当前终端注册在LTE网络，若勾选VoLTE优先，则在拨打优先使用VoLTE进行语音呼叫，即直接进行PS Call；
CSFB优先：若勾选CSFB优先，则直接回落到UTRAN/GERAN网络进行CS域的语音通话；
同时使用VoLTE和CSFB：若勾选同时使用VoLTE和CSFB，终端开始测量并维护一个邻区信号值的存储表，用来存储该装置启动后测量到的邻区的信号值。然后通过本发明中的无线协议层语音呼叫判定方法进行判断，使用最优的语音呼叫方式进行语音呼叫。
本发明实施例中，若勾选同时使用VoLTE和CSFB，终端需要维护一个邻区信号值的存储表，用来存储该装置启动后测量到的邻区的信号值。终端在注册到LTE小区后，会对当前LTE小区和邻区的信号值，例如参考信号接收功率(Reference Signal Receiving Power，简称为RSRP)，进行测量，并将测量后的值存储到上述存储表中。此后，终端以预定规定一直对当前LTE小区和邻区的RSRP进行测量，并对存储表中的个小区的RSRP值进行更新。
当然，为提升用户体验，启动该装置的方式也可采用自动的方式。当终端在LTE信号较强时自动选择VoLTE优先的方式；当终端LTE网络不稳定但UTRAN/GERAN信号较强时，可自动选择CSFB的方式；若终端需要经常在LTE以及UTRAN/GERAN小区之间移动可自动启用该装置。
本发明实施例还描述了一种LTE语音呼叫方式(即本发明上述实施例的语音呼叫方法)的判定方法：终端在发起拨号后，根据服务小区及邻区的信号阀值来判定使用VoLTE还是CSFB进行语音通话，具体为：
1.若当前LTE服务小区信号值大于某一阀值，则使用VoLTE功能进行语音呼叫；
2.若当前服务小区信号值低于某一阀值，终端测量按照LTE/UTRAN/GERAN的顺序来测量邻区；
3.若邻区信号值高于某一阀值，则在邻区上发起语音呼叫；
4.根据邻区的制式来决定呼叫方式，若邻区为LTE小区则使用VoLTE功能进行语音呼叫，若邻区为UTRAN/GERAN小区，则采用CSFB的方式发起语音呼叫。
下面将上述LTE语音呼叫方式，与具体实施环境结合起来进行说明。
若终端上层确定勾选了同时使用VoLTE和CSFB，则表示启用该语音呼叫装置，在LTE发起注册时需要通知网络下发测量配置，从而终端开始测量服务小区及邻区的信号值，终端根据测量到的信号值来判定语音呼叫的方式。图9是根据本发明实施例进行LTE语音呼叫方 式的判定方法的流程图，如图9所示，该判定方法包括如下步骤：
步骤S902：终端发起LTE网络注册；
步骤S904：终端将该装置信息包含在空中下载(Over the Air，简称为OTA)消息中发送给网络，告诉网络侧终端已启用该装置；
步骤S906：网络侧接收到该OTA信息后并确认终端已启用该装置，则由eNB通过RRCConnectionReconfigurtion消息带的measConfig信元将测量配置消息通知给UE；
步骤S908：终端开始执行测量，终端测量当前LTE服务小区、邻区的RSRP值；其中邻区包括LTE小区、UTRAN小区、GERAN小区。其中当前服务小区的RSRP值为S1，LTE邻区的RSRP值为S2，UTRAN邻区的信号值为S3，GERAN小区的信号值为S4；
步骤S910：终端将测量结果存入终端维护的邻区信号值存储表中；
步骤S912：终端根据该测量到的服务小区、邻区的信号值来判断语音呼叫方式。
在本可选实施例中，终端是如何进行语音呼叫方法判定的，可以有多种实现方式。下面对于步骤S912的实现方式进行举例说明。图10是根据本发明实施例的LTE语音呼叫判定方法步骤S912的实现流程图，如图10所示，步骤S912包括下列步骤：
步骤S1002：终端发起语音呼叫；
步骤S1004：若当前LTE服务小区的RSRP值(S1，即上述实施例中的第一信号值)大于等于某一阀值(Ss_Lcell，即上述实施例的第一阈值)，终端使用VoLTE功能进行语音呼叫，即此时进行PS call流程；
步骤S1006：若当前LTE服务小区的RSRP值(S1)小于Ss_cell，且LTE邻区信号值(S2，即上述实施例的第二小区为LTE小区的第二阈值)大于Sn_Lcell，则此时终端重选至相邻LTE小区并在LTE邻区上发起VoLTE语音呼叫；
步骤S1008：若LTE邻区信号值(S2)小于Sn_Lcell，且UTRAN邻区信号值大于等于Sn_Ucell(即上述实施例中第二小区为UTRAN小区的第二阈值)，则终端采用CSFB技术回落到UTRAN网络进行语音呼叫；
步骤S1010：若UTRAN邻区信号值小于Sn_Ucell，且GERAN邻区信号值大于等于Sn_Gcell(即上述实施例中第二小区为GERAN小区的第二阈值)，则终端采用CSFB技术回落到GERAN网络进行语音呼叫；
步骤S1012：若GERAN邻区信号值大小于Sn_Gcell，则终端继续进行判定，此时终端仍驻留在该LTE网络，则终端在当前服务小区发起VoLTE语音呼叫，否则呼叫失败。
在上述方法中有如下几个阀值，Ss_Lcell、Sn_Lcell、Sn_Ucell以及Sn_Gcell，其中Ss_Lcell用来判定当前LTE服务小区信号值，Sn_Lcell用来判定LTE邻区的信号值，Sn_Ucell用来判定UTRAN邻区的信号值，Sn_Gcell用来判定GERAN邻区的信号值。
下面，对于如何确定Ss_Lcell、Sn_Lcell、Sn_Ucell以及Sn_Gcell进行说明。
首先，对于Sn_Lcell的确定过程进行说明。
Sn_Lcell：Sn_Lcell与Ss_Lcell都是对于LTE小区的信号阀值，但是Sn_Lcell除了要满足Ss_Lcell的取值条件(根据小区的信号质量来取值)之外，，还需要满足3GPP LTE同频或异频重选的条件。
(1)若是同频或者优先级相同的异频小区重选，则根据R准则来判断重选条件，即Rn>Rs即可，S2只要大于S1即可；
根据小区选择准则，即Srxlev＞0，Srxlev计算公式如下：
Srxlev＝Qrxlevmeas-Qrxlevmin-Pcompensation；
其中Qrxlevmeas值即为我们上文中定义的S1或者S2；
(2)若是邻区是优先级高的小区，则只要满足邻区Srxlev大于门限参数threshXHigh即可，因此S2需要大于门限参数threshXHigh-Qrxlevmin-Pcompensation(其中threshXHigh在SIB3中定义)；
(3)若是邻区是优先级低的小区，则当前服务小区的Srxlev小于threshServingLow，并且目标小区的Srxlev大于门限参数threshXLow；因为在此判定方法考虑的状态下，即S1值小于threshServingLow-Qrxlevmin-Pcompensation，当前服务小区的信号值S1是大于Ss_Lcell的，threshServingLow的取值要注意大于(Ss_Lcell+Qrxlevmin+Pcompensation)/2；此时S2要大于threshXLow-Qrxlevmin-Pcompensation；
综上三种情况(1)(2)(3)，S2需满足如下三种情况才可发生重选：
(1)S2>S1；
(2)S2>threshXHigh-Qrxlevmin-Pcompensation；
(3)S2>threshXLow-Qrxlevmin-Pcompensation；
而本发明实施例中的方法又需要判断S2>Sn_Lcell，因此为了既满足重选条件，又满足本发明实施例的判定条件，Sn_Lcell取值为如上三种情况(1)(2)(3)中最大值即可。也即，Sn_Lcell＝max(S1，threshXHigh-Qrxlevmin-Pcompensation，threshXLow-Qrxlevmin-Pcompensation)。
下面再对Ss_Lcell/Sn-Ucell/Sn-Gcell的确定过程进行说明。
Ss_Lcell/Sn-Ucell/Sn-Gcell：本申请的目的是希望当LTE小区信号质量很弱，而UTRAN/GERAN小区信号质量较好时才使用CSFB来保证语音通话质量，因此对于Ss_Lcell/Sn-Ucell/Sn-Gcell的阀值并不根据重选条件来，而是根据UTRAN/GERAN小区信号质量来取值；因此Ss_Lcell取值弱信号值，Sn-Ucell/Sn-Gcell则可取值强信号值。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，确定终端当前所在的第一小区的第一信号值和与该第一小区相邻的第二小区的第二信号值；
S2，根据第一信号值和第二信号值确定呼叫方式，以及从第一小区和第二小区中确定终端发起语音呼叫的呼叫小区；
S3，利用确定的呼叫方式在确定的呼叫小区上发起语音呼叫。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行上述S1-S3。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种语音呼叫方法及装置具有以下有益效果：终端可以选择质量较好的当前小区或者邻区发起语音呼叫，解决了相关技术中支持VoLTE的终端在信号质量较差时进行语音通话时会直接发起PS call的问题，进而达到了提高终端在发起语音呼叫时的通话质量，提高了用户的体验度。

Claims (12)

  1. 一种语音呼叫方法，包括：
    确定终端当前所在的第一小区的第一信号值和与所述第一小区相邻的第二小区的第二信号值；
    根据所述第一信号值和所述第二信号值确定呼叫方式，以及从所述第一小区和所述第二小区中确定所述终端发起语音呼叫的呼叫小区；
    利用确定的所述呼叫方式在确定的所述呼叫小区上发起语音呼叫。
  2. 根据权利要求1所述的方法，其中，根据所述第一信号值和所述第二信号值确定所述呼叫方式，以及从所述第一小区和所述第二小区中确定所述终端发起语音呼叫的呼叫小区包括：
    判断所述第一信号值是否大于或等于第一阈值；
    在确定所述第一信号值大于或等于所述第一阈值时，确定利用基于长期演进的语音业务VoLTE在所述第一小区上发起语音呼叫。
  3. 根据权利要求2所述的方法，其中，在判断所述第一信号值是否大于或等于所述第一阈值之后，还包括：
    在确定所述第一信号值小于所述第一阈值时，判断所述第二小区中是否存在第三小区，其中，所述第三小区的信号值大于或等于第二阈值；
    在判断结果为存在的情况下，当所述第三小区为LTE小区时，利用VoLTE在所述第三小区发起语音呼叫，或者当所述第三小区为通用移动通信系统地面无线接入网UTRAN小区或通用移动通信系统/增强型数据速率通用移动通信系统演进接入网GERAN小区时，利用电路域回落CSFB在所述第三小区上发起语音呼叫。
  4. 根据权利要求3所述的方法，其中，在判断所述第二小区中是否存在所述第三小区之后，还包括：
    当判断结果为不存在的情况下，判断所述终端是否驻留在所述第一小区；
    在判断结果为所述终端驻留在所述第一小区的情况下，确定利用VoLTE在所述第一小区上发起语音呼叫；
    在判断结果为所述终端没有驻留在所述第一小区的情况下，确定语音呼叫失败。
  5. 根据权利要求3所述的方法，其中，判断所述第二小区中是否存在所述第三小区包括：
    按照所述第二小区中的各小区的优先级从高到低的顺序，依次判断所述第二小区中是否存在信号值大于或等于第二阈值的小区，其中，LTE小区优先级最高、UTRAN小区优先级居中，GERAN小区优先级最低；
    在判断结果为存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中存在所述第三小区；
    在判断结果为不存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中不存在所述第三小区。
  6. 根据权利要求3所述的方法，其中，当所述第二小区中存在LTE小区时，所述第二阈值为通过如下方式确定的各信号值中的最大值：
    在所述第二小区中的LTE小区为与所述第一小区同频或者优先级相同的异频小区的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值；
    所述第二小区中的LTE小区的优先级高于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值；
    所述第二小区中的LTE小区的优先级低于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值。
  7. 一种语音呼叫装置，包括：
    第一确定模块，设置为确定终端当前所在的第一小区的第一信号值和与所述第一小区相邻的第二小区的第二信号值；
    第二确定模块，设置为根据所述第一信号值和所述第二信号值确定呼叫方式，以及从所述第一小区和所述第二小区中确定所述终端发起语音呼叫的呼叫小区；
    呼叫模块，设置为利用确定的所述呼叫方式在确定的所述呼叫小区上发起语音呼叫。
  8. 根据权利要求7所述的装置，其中，所述第二确定模块包括：
    第一判断单元，设置为判断所述第一信号值是否大于或等于第一阈值；
    第一确定单元，设置为在确定所述第一信号值大于或等于所述第一阈值时，确定利用基于长期演进的语音业务VoLTE在所述第一小区上发起语音呼叫。
  9. 根据权利要求8所述的装置，其中，所述第二确定模块还包括：
    第二判断单元，设置为在所述第一判断单元判断所述第一信号值是否大于或等于所述第一阈值之后，在确定所述第一信号值小于所述第一阈值时，判断所述第二小区中是否存在第三小区，其中，所述第三小区的信号值大于或等于第二阈值；
    第二确定单元，设置为在所述第二判断单元的判断结果为存在的情况下，当所述第三小区为LTE小区时，利用VoLTE在所述第三小区发起语音呼叫，或者当所述第三小区为通用移动通信系统地面无线接入网UTRAN小区或通用移动通信系统/增强型数据速率通用移动通信系统演进接入网GERAN小区时，利用电路域回落CSFB在所述第三小区上发起语音呼叫。
  10. 根据权利要求9所述的装置，其中，所述第二确定模块还包括：
    第三判断单元，设置为在所述第二判断单元判断所述第二小区中是否存在所述第三小区之后，当所述第二判断单元的判断结果为不存在的情况下，判断所述终端是否驻留在所述第一小区；
    第三确定单元，设置为在所述第三判断单元的判断结果为所述终端驻留在所述第一小区的情况下，确定利用VoLTE在所述第一小区上发起语音呼叫；
    第四确定单元，设置为在所述第三判断单元的判断结果为所述终端没有驻留在所述第一小区的情况下，确定语音呼叫失败。
  11. 根据权利要求9所述的装置，其中，所述第二判断单元包括：
    判断子单元，设置为按照所述第二小区中的各小区的优先级从高到低的顺序，依次判断所述第二小区中是否存在信号值大于或等于第二阈值的小区，其中，LTE小区优先级最高、UTRAN小区优先级居中，GERAN小区优先级最低；
    第一确定子单元，设置为在所述判断子单元的判断结果为存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中存在所述第三小区；
    第二确定子单元，设置为在所述判断子单元的判断结果为不存在信号值大于或等于所述第二阈值的小区的情况下，确定所述第二小区中不存在所述第三小区。
  12. 根据权利要求9所述的装置，其中，还包括：
    第三确定模块，设置为当所述第二小区中存在LTE小区时，将通过如下方式确定的各信号值中的最大值确定为所述第二阈值：
    在所述第二小区中的LTE小区为与所述第一小区同频或者优先级相同的异频小区的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值；
    所述第二小区中的LTE小区的优先级高于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值；
    所述第二小区中的LTE小区的优先级低于所述第一小区的优先级的情况下，满足LTE小区重选条件的所述第二小区中的LTE小区的信号值。
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