CN106937343B - Voice service implementation method and device - Google Patents

Voice service implementation method and device Download PDF

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Publication number
CN106937343B
CN106937343B CN201511033333.5A CN201511033333A CN106937343B CN 106937343 B CN106937343 B CN 106937343B CN 201511033333 A CN201511033333 A CN 201511033333A CN 106937343 B CN106937343 B CN 106937343B
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cell
gsm network
switching
information
gsm
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CN106937343A (en
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郑国惠
汪亚峰
蔡志勇
胡国峰
吕晓锋
何俊毅
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China Mobile Group Zhejiang Co Ltd
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China Mobile Group Zhejiang Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0066Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface

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

Abstract

The invention discloses a voice service implementation method, which records information of a Long Term Evolution (LTE) cell which resides when history enhanced dual-mode single-standby wireless voice call continuity (eSRVCC) is switched and a global system for mobile communication (GSM) network cell which is switched correspondingly; and determining the accessed GSM network cell according to the access rule according to the information of the LTE cell resided in the historical eSRVCC switching process and the GSM network cell corresponding to the switching process, the information of the current LTE cell and the GSM network neighbor cell Measurement Report (MR) data configured by the current LTE cell. The invention also discloses a voice service implementation device.

Description

Voice service implementation method and device
Technical Field
The present invention relates to voice processing technologies in the field of mobile communications, and in particular, to a method and an apparatus for implementing a voice service.
Background
The Long Term Evolution (LTE) network mainly implements voice services, including: circuit Switched Fallback (CSFB), single card dual standby, Voice over LTE (VoLTE), and the like; the Voice over LTE scheme provides Voice over LTE packet domain, and ensures smooth Voice handover with a second Generation (2G, 2nd Generation) mobile communication technology/a third Generation (3G, 3rd Generation) mobile communication technology through an enhanced dual mode Single Radio Voice Call Continuity (eSRVCC) function, thereby implementing Voice Continuity. The eSRVCC function is an important supplementary function of the VoLTE before the LTE network coverage does not reach the full coverage, and the continuity of the VoLTE voice service can be ensured at the early stage and the middle stage of the LTE construction, so that call drop caused when a user moves out of the LTE coverage is reduced, and complaints of the user are reduced.
When a VoLTE user gradually moves out of an LTE coverage area in the voice call process, and the LTE signal level is lower than a set threshold, a terminal measures the signal level of a network cell of a Global System for Mobile communications (GSM) according to a 2G/3G inter-System adjacent cell configured by an LTE network; when the signal level of the GSM network is higher than the set threshold, the terminal selects the GSM network with the strongest signal to access according to the measurement result through the eSRVCC switching function, and continues to carry out voice service.
However, the existing eSRVCC functions have certain drawbacks: after a VoLTE call is started in an LTE network, when the terminal moves to an LTE weak coverage area, the terminal measures adjacent cells of the GSM network according to the configured adjacent cells, and then switches to a cell with the strongest signal according to a measurement result; however, the frequency point measurement may bring a certain network delay, which may cause the switching to be untimely, thereby causing a call drop; meanwhile, an access cell is selected according to the signal level of the GSM network, and if the cell has the strongest signal but has an abnormal state, such as: problems such as alarm, congestion or voice quality, etc., may result in failure of the call due to failure of normal voice service.
Therefore, reducing the handover delay, reducing the call drop probability, improving the voice quality, and improving the user perception during the eSRVCC handover is an urgent problem to be solved by mobile communication operators.
Disclosure of Invention
In view of this, embodiments of the present invention are expected to provide a method and an apparatus for implementing a voice service, which can reduce a handover delay, reduce a call drop probability, improve voice quality, and improve user perception during eSRVCC handover.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a method for realizing voice service, which comprises the following steps: recording information of an LTE cell resided during historical eSRVCC switching and a GSM network cell corresponding to the switching; the method further comprises the following steps:
and determining the accessed GSM network cell according to a preset access rule according to the information of the LTE cell resided in the historical eSRVCC switching process and the GSM network cell corresponding to the switching process, the information of the current LTE cell and the data of a GSM network neighbor cell Measurement Report (MR) configured by the current LTE cell.
In the above scheme, the accessed GSM network cell is determined according to the access rule; the method comprises the following steps:
according to the MR data, determining a GSM network cell which normally works, identifying the GSM network cell as a GSM voice switching priority cell, and indicating an eNodeB to issue information of the GSM voice switching priority cell;
and if the current LTE cell belongs to the LTE cell resided when the historical eSRVCC is switched and the GSM network cell corresponding to the switching belongs to the GSM voice switching priority cell, determining the GSM network cell corresponding to the switching as an access target GSM network cell and indicating the eNodeB to only send the information of the access target GSM network cell.
In the above scheme, the accessed GSM network cell is determined according to a preset access rule; the method comprises the following steps:
if the current LTE cell belongs to the LTE cell resided in the historical eSRVCC switching process, but the GSM network cell correspondingly switched does not belong to the GSM voice switching priority cell, indicating an eNodeB to issue information of the GSM voice switching priority cell;
if the current LTE cell does not belong to the LTE cell resided in the historical eSRVCC switching process, indicating the eNodeB to issue the information of the GSM voice switching priority cell;
and if the information of the LTE cell resided in the historical eSRVCC switching and the GSM network cell corresponding to the switching does not exist, indicating the eNodeB to issue the information of the GSM voice switching priority cell.
In the above scheme, the method further comprises: updating information of the resident LTE cell and the GSM network cell corresponding to the switching during the historical eSRVCC switching according to the current LTE cell and the accessed GSM network cell;
and acquiring MR data of the accessed GSM network cell, and updating the MR data of the GSM network neighboring cell configured by the current LTE cell.
In the above scheme, the information of the LTE cell where the historical eSRVCC resides during handover and the GSM network cell corresponding to the handover; the method comprises the following steps:
information of an LTE cell and a GSM network cell corresponding to the handover, which are resided in the latest eSRVCC handover.
The embodiment of the invention also provides a device for realizing the voice service, which comprises: a recording module and a control module, wherein,
the recording module records information of an LTE cell resided during historical eSRVCC switching and a GSM network cell corresponding to the switching;
and the control module is used for determining the accessed GSM network cell according to the LTE cell resided during the historical eSRVCC switching, the information of the GSM network cell corresponding to the switching, the information of the current LTE cell and the MR data of the GSM network neighbor cell configured by the current LTE cell and a preset access rule.
In the foregoing solution, the control module is specifically configured to:
according to the MR data, determining a GSM network cell which normally works, identifying the GSM network cell as a GSM voice switching priority cell, and indicating an eNodeB to issue information of the GSM voice switching priority cell;
and if the current LTE cell belongs to the LTE cell resided when the historical eSRVCC is switched and the GSM network cell corresponding to the switching belongs to the GSM voice switching priority cell, determining the GSM network cell corresponding to the switching as an access target GSM network cell and indicating the eNodeB to only send the information of the access target GSM network cell.
In the foregoing solution, the control module is further configured to:
if the current LTE cell belongs to the LTE cell resided in the historical eSRVCC switching process, but the GSM network cell correspondingly switched does not belong to the GSM voice switching priority cell, indicating an eNodeB to issue information of the GSM voice switching priority cell;
if the current LTE cell does not belong to the LTE cell resided in the historical eSRVCC switching process, indicating the eNodeB to issue the information of the GSM voice switching priority cell;
and if the information of the LTE cell resided in the historical eSRVCC switching and the GSM network cell corresponding to the switching does not exist, indicating the eNodeB to issue the information of the GSM voice switching priority cell.
In the foregoing solution, the recording module is further configured to:
updating information of the resident LTE cell and the GSM network cell corresponding to the switching during the historical eSRVCC switching according to the current LTE cell and the accessed GSM network cell;
and acquiring MR data of the accessed GSM network cell, and updating the MR data of the GSM network neighboring cell configured by the current LTE cell.
In the foregoing solution, the information about the LTE cell where the historical eSRVCC resides during handover and the GSM network cell corresponding to the handover includes:
information of an LTE cell and a GSM network cell corresponding to the handover, which are resided in the latest eSRVCC handover.
The voice service implementation method and the device provided by the embodiment of the invention record information of the LTE cell resided in the historical eSRVCC switching process and the GSM network cell correspondingly switched; and determining the accessed GSM network cell according to a preset access rule according to the information of the LTE cell resident during the historical eSRVCC switching and the GSM network cell corresponding to the switching, the information of the current LTE cell and the MR data of the GSM network neighboring cell configured by the current LTE cell. Selecting a GSM network cell which normally works for switching, and taking the GSM network cell accessed during the historical eSRVCC switching as a first priority of the switching; therefore, switching time delay is reduced, call drop probability is reduced, voice quality is improved, and user perception is improved.
Drawings
Fig. 1 is a schematic flow chart of a voice service implementation method according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a relationship between components of a voice service implementation method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a specific flow of handover of an eSRVCC of a VoLTE terminal according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a voice service implementation apparatus according to an embodiment of the present invention.
Detailed Description
In the embodiment of the invention, information of an LTE cell resided during historical eSRVCC switching and a GSM network cell corresponding to the switching is recorded; and determining the accessed GSM network cell according to a preset access rule according to the information of the LTE cell resident during the historical eSRVCC switching and the GSM network cell corresponding to the switching, the information of the current LTE cell and the MR data of the GSM network neighboring cell configured by the current LTE cell.
The present invention will be described in further detail with reference to examples.
As shown in fig. 1, a method for implementing a voice service provided in an embodiment of the present invention includes:
step 101: recording information of an LTE cell resided during historical eSRVCC switching and a GSM network cell corresponding to the switching;
here, the information of the LTE cell where the eSRVCC handover performed by the user history resides and the information of the GSM network cell corresponding to the handover may be read and recorded at the S1 port on the MME side; the information of the cell includes: cell Identity (ID, Identity), etc., which may be used to determine the LTE cell and GSM network cell; here, the historical eSRVCC switching may be the latest eSRVCC switching.
Step 102: determining an accessed GSM network cell according to a preset access rule according to the information of the LTE cell resided in the historical eSRVCC during switching and the GSM network cell correspondingly switched, the information of the current LTE cell and the MR data of the GSM network neighboring cell configured by the current LTE cell;
here, the VoLTE terminal resides in the LTE network, and if there is a voice service requirement at this time, a Radio Resource Control (RRC) connection is triggered through an INVITE signaling, and a signaling Radio bearer 2(SRB2, signaling Radio Bearers2) and a Quality of service Class 5(QCI5, Quality of service Class Identifier5) bearer are established through an RRC reconfiguration message, and establishment of a VoLTE voice call is completed through a series of signaling interaction processes; as the VoLTE terminal gradually moves out of the LTE coverage area, the eSRVCC handover procedure will be initiated. After receiving the eSRVCC switching request, judging the optimal cell switched by the user according to the stored information of the LTE cell resided in the historical eSRVCC during switching and the GSM network cell correspondingly switched;
specifically, how to judge the optimal cell for user handover may adopt the following processing steps:
firstly, reading the information of a GSM network adjacent cell configured by a service-initiated LTE cell, wherein the MR data of the GSM network cell can be read through a BSC side A interface, the GSM network cell with problems is determined according to the MR data and listed in a blacklist of a GSM voice switching cell, and other GSM network cells are marked as GSM voice switching priority cells. Here, the MR data may be based on: the signal level strength, quality, transmitting power, DTX use condition and other parameters, and the working condition of the GSM network cell, such as alarm, congestion condition or voice quality and other problems, is judged. The relationship of the various components involved in the handover of VoLTE to GSM is shown in fig. 2;
then, analyzing the stored information of the LTE cell resided in the historical eSRVCC switching process and the GSM network cell correspondingly switched, if the LTE cell where the VoLTE terminal is currently located is consistent with the LTE cell initiated by the historical conversation and the GSM network cell switched by the historical conversation is in the GSM voice switching priority cell list, indicating an evolution base station (eNodeB, Evolved Node B) to only send the cell information and directly switch to the GSM network cell without measuring all adjacent cell frequency points, thereby reducing the time delay; here, the history call information may be information of a previous call. If the GSM network cell switched by the previous call is not in the GSM voice switching cell name list, indicating the eNodeB to only send the information of the GSM voice switching priority cell in the adjacent cell;
analyzing the information of the stored LTE cell resided in the historical eSRVCC during switching and the GSM network cell corresponding to switching, and if the LTE cell where the VoLTE terminal is currently located is not consistent with the LTE cell initiated by the historical conversation, indicating the eNodeB to only send the GSM voice switching priority cell information in the adjacent cell; and if the information of the LTE cell resided in the historical eSRVCC switching process and the GSM network cell corresponding to the switching process is not stored, indicating the eNodeB to only send the information of the GSM voice switching priority cell in the adjacent cell.
The method for implementing voice service provided by the embodiment of the invention also comprises the following steps: updating information of the resident LTE cell and the GSM network cell corresponding to the switching during the historical eSRVCC switching according to the current LTE cell and the GSM network cell switched and accessed; acquiring MR data accessed to a GSM network cell, and updating MR data of a GSM network neighboring cell configured by the current LTE cell;
here, the eNodeB issues handover target cell information according to the handover instruction of the analysis processing apparatus, and the user VoLTE terminal performs connection according to the eNodeB issued cell; at this time, the information of the LTE cell resided in the historical eSRVCC switching and the GSM network cell corresponding to the switching can be updated by the LTE cell switched by the eSRVCC and the GSM cell switched to and accessed by the eSRVCC; and acquiring MR data of the GSM cell switched and accessed, and updating the MR data of the GSM network neighbor cell configured by the current LTE cell.
After the voice service is finished, the VoLTE terminal of the user can return to the LTE network.
The positive effects produced by the present invention will be described in further detail with reference to specific examples.
As shown in fig. 3, the specific procedure of the handover of the VoLTE terminal eSRVCC in this example is as follows:
step 301: the VoLTE terminal resides in an LTE network and carries out VoLTE voice call; starting an eSRVCC switching process along with the gradual movement of the VoLTE terminal out of an LTE coverage area;
step 302: judging whether information of an LTE cell resided in the previous eSRVCC switching and a GSM network cell corresponding to the switching exists; if not, indicating the eNodeB and only sending down the GSM voice switching priority cell information in the adjacent cell; otherwise, go to step 303;
step 303: judging whether the current LTE cell is consistent with the LTE cell with the eSRVCC switching in the previous time; if not, indicating the eNodeB and only sending down the GSM voice switching priority cell information in the adjacent cell; otherwise, go to step 304;
step 304: judging whether the GSM network cell switched for the previous time is in a GSM voice switching priority cell; if not, indicating the eNodeB and only sending down the GSM voice switching priority cell information in the adjacent cell; otherwise, go to step 305;
step 305: and indicating the eNodeB to only issue the information of the GSM network cell for switching.
As shown in fig. 4, the apparatus for implementing a voice service according to an embodiment of the present invention includes: a recording module 41, a control module 42, wherein,
the recording module 41 records information of an LTE cell residing in a historical eSRVCC handover and a GSM network cell corresponding to the handover;
here, the information of the LTE cell where the eSRVCC handover performed by the user history resides and the information of the GSM network cell corresponding to the handover may be read and recorded at the S1 port on the MME side; the information of the cell includes: cell ID, etc., which may be used to determine the LTE cell and GSM network cell; here, the historically conducted eSRVCC handover may be a most recently conducted eSRVCC handover.
The control module 42 is configured to determine, according to preset access rules, an accessed GSM network cell according to the LTE cell resided in the historical eSRVCC handover and the information of the GSM network cell corresponding to the handover, and the information of the current LTE cell and the MR data of the GSM network neighbor configured in the current LTE cell;
specifically, the VoLTE terminal resides in the LTE network, and if there is a voice service requirement at this time, the RRC connection is triggered through the INVITE signaling, and SRB2 and QCI5 bearers are established through the RRC reconfiguration message, and the establishment of the VoLTE voice call is completed through a series of signaling interaction processes; as the VoLTE terminal gradually moves out of the LTE coverage area, the eSRVCC handover procedure will be initiated. After receiving the eSRVCC switching request, judging the optimal cell switched by the user according to the stored information of the LTE cell resided in the historical eSRVCC during switching and the GSM network cell correspondingly switched;
specifically, how to judge the optimal cell for user handover may adopt the following processing steps:
firstly, reading the information of a GSM network adjacent cell configured by a service-initiated LTE cell, wherein the MR data of the GSM network cell can be read through a BSC side A interface, the GSM network cell with problems is determined according to the MR data and listed in a blacklist of a GSM voice switching cell, and other GSM network cells are marked as GSM voice switching priority cells. Here, the MR data may be based on: the signal level strength, quality, transmitting power, DTX use condition and other parameters, and the working condition of the GSM network cell, such as alarm, congestion condition or voice quality and other problems, is judged. The relationship of the various components involved in the handover of VoLTE to GSM is shown in fig. 2;
then, analyzing the information of the stored LTE cell resided during the switching of the historical eSRVCC and the GSM network cell correspondingly switched, and if the LTE cell where the VoLTE terminal is currently located is consistent with the LTE cell initiated by the historical conversation and the GSM network cell switched by the historical conversation is in the GSM voice switching priority cell list, indicating the eNodeB to only send the cell information and directly switch to the GSM network cell without measuring frequency points of all adjacent cells, thereby reducing the time delay; here, the history call information may be information of a previous call. If the GSM network cell switched by the previous call is not in the GSM voice switching cell name list, indicating the eNodeB to only send the information of the GSM voice switching priority cell in the adjacent cell;
analyzing the information of the stored LTE cell resided in the historical eSRVCC during switching and the GSM network cell corresponding to switching, and if the LTE cell where the VoLTE terminal is currently located is not consistent with the LTE cell initiated by the historical conversation, indicating the eNodeB to only send the GSM voice switching priority cell information in the adjacent cell; and if the information of the LTE cell resided in the historical eSRVCC switching process and the GSM network cell corresponding to the switching process is not stored, indicating the eNodeB to only send the information of the GSM voice switching priority cell in the adjacent cell.
The recording module 41 further includes: updating information of the resident LTE cell and the GSM network cell corresponding to the switching during the historical eSRVCC switching according to the current LTE cell and the GSM network cell switched and accessed; acquiring MR data accessed to a GSM network cell, and updating MR data of a GSM network neighboring cell configured by the current LTE cell;
specifically, the eNodeB issues handover target cell information according to the handover instruction of the analysis processing apparatus, and the user VoLTE terminal performs connection according to the cell issued by the eNodeB; at this time, the information of the LTE cell resided in the historical eSRVCC switching and the GSM network cell corresponding to the switching can be updated by the LTE cell switched by the eSRVCC and the GSM cell switched to and accessed by the eSRVCC; and acquiring MR data of the GSM cell switched and accessed, and updating the MR data of the GSM network neighbor cell configured by the current LTE cell.
After the voice service is finished, the VoLTE terminal of the user can return to the LTE network.
In practical applications, the recording module 41 and the control module 42 can be implemented by a Central Processing Unit (CPU), a microprocessor unit (MPU), a Digital Signal Processor (DSP), or a Field Programmable Gate Array (FPGA) in a background server.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims (8)

1. A method for implementing voice service is characterized in that the method comprises the following steps: recording information of a Long Term Evolution (LTE) cell resident during history enhanced dual-mode single-standby wireless voice call continuity (eSRVCC) switching and a global system for mobile communication (GSM) network cell corresponding to switching; the method further comprises the following steps:
determining an accessed GSM network cell according to a preset access rule according to the information of the LTE cell resided in the historical eSRVCC switching process and the GSM network cell corresponding to the switching process, the information of the current LTE cell and the MR data of the GSM network neighbor cell measurement report configured by the current LTE cell;
wherein, the determining the accessed GSM network cell according to the access rule comprises:
according to the MR data, determining a GSM network cell which normally works, identifying the GSM network cell as a GSM voice switching priority cell, and indicating an evolution base station eNodeB to issue information of the GSM voice switching priority cell;
and if the current LTE cell belongs to the LTE cell resided when the historical eSRVCC is switched and the GSM network cell corresponding to the switching belongs to the GSM voice switching priority cell, determining the GSM network cell corresponding to the switching as an access target GSM network cell and indicating the eNodeB to only send the information of the access target GSM network cell.
2. The method according to claim 1, wherein the determining the accessed GSM network cell is according to a preset access rule; the method comprises the following steps:
if the current LTE cell belongs to the LTE cell resided in the historical eSRVCC switching process, but the GSM network cell correspondingly switched does not belong to the GSM voice switching priority cell, indicating an eNodeB to issue information of the GSM voice switching priority cell;
if the current LTE cell does not belong to the LTE cell resided in the historical eSRVCC switching process, indicating the eNodeB to issue the information of the GSM voice switching priority cell;
and if the information of the LTE cell resided in the historical eSRVCC switching and the GSM network cell corresponding to the switching does not exist, indicating the eNodeB to issue the information of the GSM voice switching priority cell.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
updating information of the resident LTE cell and the GSM network cell corresponding to the switching during the historical eSRVCC switching according to the current LTE cell and the accessed GSM network cell;
and acquiring MR data of the accessed GSM network cell, and updating the MR data of the GSM network neighboring cell configured by the current LTE cell.
4. The method of claim 1 or 2, wherein the historical eSRVCC handover time information for LTE cells camped and GSM network cells corresponding to the handover; the method comprises the following steps:
information of an LTE cell and a GSM network cell corresponding to the handover, which are resided in the latest eSRVCC handover.
5. A voice service implementing apparatus, the apparatus comprising: a recording module and a control module, wherein,
the recording module records information of an LTE cell resided during historical eSRVCC switching and a GSM network cell corresponding to the switching;
the control module is used for determining an accessed GSM network cell according to preset access rules according to the information of the LTE cell resided during the historical eSRVCC switching and the GSM network cell correspondingly switched, the information of the current LTE cell and the MR data of the GSM network neighbor cell configured by the current LTE cell;
the control module is specifically configured to:
according to the MR data, determining a GSM network cell which normally works, identifying the GSM network cell as a GSM voice switching priority cell, and indicating an eNodeB to issue information of the GSM voice switching priority cell;
and if the current LTE cell belongs to the LTE cell resided when the historical eSRVCC is switched and the GSM network cell corresponding to the switching belongs to the GSM voice switching priority cell, determining the GSM network cell corresponding to the switching as an access target GSM network cell and indicating the eNodeB to only send the information of the access target GSM network cell.
6. The apparatus of claim 5, wherein the control module is further configured to:
if the current LTE cell belongs to the LTE cell resided in the historical eSRVCC switching process, but the GSM network cell correspondingly switched does not belong to the GSM voice switching priority cell, indicating an eNodeB to issue information of the GSM voice switching priority cell;
if the current LTE cell does not belong to the LTE cell resided in the historical eSRVCC switching process, indicating the eNodeB to issue the information of the GSM voice switching priority cell;
and if the information of the LTE cell resided in the historical eSRVCC switching and the GSM network cell corresponding to the switching does not exist, indicating the eNodeB to issue the information of the GSM voice switching priority cell.
7. The apparatus of claim 5 or 6, wherein the recording module is further configured to:
updating information of the resident LTE cell and the GSM network cell corresponding to the switching during the historical eSRVCC switching according to the current LTE cell and the accessed GSM network cell;
and acquiring MR data of the accessed GSM network cell, and updating the MR data of the GSM network neighboring cell configured by the current LTE cell.
8. The apparatus of claim 5 or 6, wherein the information of the LTE cell camped on the historical eSRVCC handover and the GSM network cell corresponding to the handover comprises:
information of an LTE cell and a GSM network cell corresponding to the handover, which are resided in the latest eSRVCC handover.
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