CN109951878B - Voice service switching method, terminal equipment, network side equipment and system - Google Patents
Voice service switching method, terminal equipment, network side equipment and system Download PDFInfo
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Abstract
The embodiment of the invention provides a voice service switching method, terminal equipment, network side equipment and a system. The method comprises the following steps: receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library; receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to a terminal type; in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to a network side; and receiving an eSRVCC command message issued by the network side, and switching the eSRVCs. The embodiment of the invention issues different eSRVCC parameter information aiming at different terminal types, thereby improving the flexibility of network configuration, ensuring the continuity of voice services of terminal equipment of various types and improving the quality of voice switching service.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a voice service switching method, terminal equipment, network side equipment and a system.
Background
Volte (voice over LTE) is an IP data transmission technology as a voice service based on an IP multimedia subsystem, and all services are carried on an LTE network, i.e., a 4G network, without a 2G/3G network. However, the coverage rate of the LTE network is low at the initial deployment stage, in order to maintain the continuity of voice services, VoLTE is used for high-definition voice/video calls in the LTE coverage area, and when the LTE is not covered, a circuit-switched CS domain of a 2G/3G network is used for calls. Specifically, when a user uses an LTE network to perform a Voice Call, the LTE coverage area enters an LTE-free coverage area, and an Enhanced Single Radio Voice Call Continuity (eSRVCC) scheme is adopted to implement Call connection from the LTE network to a 2G/3G network, thereby ensuring Call Continuity.
The eSRVCC adopts a Mobile Assisted Handover (MAHO) strategy, i.e. the network requires the Mobile station to measure the surrounding signal strength and report to the network side according to a certain rule, and the network judges whether to switch according to the measurement result of the Mobile station. The specific process can be divided into 3 steps of measurement, decision and execution, fig. 1 is a schematic flow diagram of an eSRVCC method in the prior art, and as shown in fig. 1, when a terminal device (User Equipment, UE) is in a VoLTE call state, a network side issues parameter configuration information for the eSRVCC to the UE through a Radio Resource Control (RRC) message; when the quality of the signals received by the UE is reduced to a certain degree and the conditions set by the eSRVCC parameters are met, the UE reports an eSRVCC measurement event report to a network side; after receiving the event report, the network side issues an eSRVCC command message to the UE, and the UE executes an eSRVCC process, so that the continuity of the voice service is ensured.
However, in the prior art, all terminal devices in the same cell can only receive the same general eSRVCC parameter configuration information, and cannot issue dedicated eSRVCC parameter configuration information for the terminal devices, which results in a large switching delay of some terminal devices and a failure to ensure continuity of voice services.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides a voice service switching method, terminal equipment, network side equipment and a system.
In a first aspect, an embodiment of the present invention provides a method for switching a voice service, including:
receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library;
receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to the terminal type;
in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side;
and receiving the eSRVCC command message issued by the network side, and carrying out eSRVCC switching.
In a second aspect, another embodiment of the present invention provides a method for switching a voice service, including:
sending an identification request to the terminal equipment;
receiving an International Mobile Equipment Identity (IMEI) code sent by the terminal equipment, and determining the terminal type of the terminal equipment according to the IMEI code and a preset abnormal terminal library;
determining enhanced single radio voice call continuity (eSRVCC) parameter information according to the terminal category, and sending a Radio Resource Control (RRC) reconfiguration message to the terminal equipment, wherein the RRC reconfiguration message carries the eSRVCC parameter information, so that the terminal equipment can judge whether a received signal meets the condition set by the eSRVCC parameter information or not in the VoLTE communication process;
receiving an eSRVCC measurement event report reported by the terminal equipment;
and sending an eSRVCC command message to the terminal equipment so as to allow the terminal equipment to carry out eSRVCC switching.
In a third aspect, an embodiment of the present invention provides a terminal device, including:
the first sending module is used for receiving an identification request issued by a network side and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library;
a first receiving module, configured to receive a radio resource control RRC reconfiguration message issued by a network side, where the RRC reconfiguration message carries enhanced single radio voice call continuity eSRVCC parameter information corresponding to the terminal type;
a reporting module, configured to report an eSRVCC measurement event report to the network side if it is determined that a received signal meets a condition set by the eSRVCC parameter information in a VoLTE communication process;
and the switching module is used for receiving the eSRVCC command message issued by the network side and carrying out eSRVCC switching.
In a fourth aspect, an embodiment of the present invention provides a network side device, including:
the second sending module is used for sending an identification request to the terminal equipment;
the classification module is used for receiving an International Mobile Equipment Identity (IMEI) code sent by the terminal equipment and determining the terminal category of the terminal equipment according to the IMEI code and a preset abnormal terminal library;
a parameter configuration module, configured to determine, according to the terminal category, to enhance single wireless voice call continuity eSRVCC parameter information, and send a radio resource control RRC reconfiguration message to the terminal device, where the RRC reconfiguration message carries the eSRVCC parameter information, so that the terminal device determines, in a VoLTE communication process, whether a received signal meets a condition set by the eSRVCC parameter information;
a second receiving module, configured to receive an eSRVCC measurement event report reported by the terminal device;
and a third sending module, configured to send an eSRVCC command message to the terminal device, so that the terminal device performs eSRVCC switching.
In a fifth aspect, an embodiment of the present invention provides a voice service switching system, which includes at least one terminal device and the network side device.
In a sixth aspect, an embodiment of the present invention provides an electronic device, including:
the processor and the memory are communicated with each other through a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform a method comprising: receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library; receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to the terminal type; in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side; and receiving the eSRVCC command message issued by the network side, and carrying out eSRVCC switching.
In a seventh aspect, an embodiment of the present invention provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following method: receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library; receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to the terminal type; in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side; and receiving the eSRVCC command message issued by the network side, and carrying out eSRVCC switching.
The voice service switching method provided by the embodiment of the invention determines the terminal type according to the IMEI of the terminal equipment, and issues different eSRVCC parameter information aiming at different terminal types, thereby overcoming the defect that all the terminal equipment in the same cell can only receive the same eSRVCC parameter information, improving the flexibility of network configuration, ensuring the continuity of the voice service of the terminal equipment of various types and improving the quality of voice switching service.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a prior art eSRVCC method;
fig. 2 is a schematic flow chart of a voice service switching method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a voice service switching method according to another embodiment of the present invention;
fig. 4 is a schematic flow chart of an abnormal terminal warehousing method in a voice service switching method according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating a method for determining eSRVCC parameter information in a voice service switching method according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of an abnormal terminal ex-warehouse method in the voice service switching method according to the embodiment of the present invention;
fig. 7 is a flowchart illustrating a voice service switching method according to still another embodiment of the present invention;
fig. 8 is a signaling diagram of a voice service switching method according to another embodiment of the present invention;
fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a voice service switching system according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 is a schematic flow chart of a voice service switching method provided in an embodiment of the present invention, and as shown in fig. 2, the voice service switching method includes:
step S21, receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side, so that the network side can determine the terminal type according to the IMEI code and a preset abnormal terminal library;
specifically, in an existing Enhanced Single Radio Voice Call Continuity (eSRVCC) scheme, eSRVCC parameter information is configured in advance, the same eSRVCC parameter information is used by the same LTE cell and is denoted as universal eSRVCC parameter information, the universal eSRVCC parameter information is issued to the terminal device UE through a Radio Resource Control (RRC) reconfiguration message, and in order to issue different eSRVCC parameter configuration information for different terminal devices, the terminal devices need to be distinguished first, and International Mobile Equipment Identity (IMEI Identity) of each terminal device is determined.
In 3GPP TS 24.301V9.2.0(2010-03) there is specified: the network side issues an identification REQUEST IDENTITY REQUEST to the UE, requires the terminal equipment to report equipment information (such as IMEI), and then the terminal equipment in the connection state of the evolution mobility management entity EMM feeds back an identification RESPONSE IDENTITY RESPONSE to the network side, and the network side acquires the IMEI of the UE from the RESPONSE message.
For example, in the process of initiating network access by the UE, before the integrity protection algorithm is started, the network side issues an IDENTITY REQUEST message to the UE, and when receiving the IDENTITY REQUEST message, the UE sends an IDENTITY RESPONSE message to the network side to implement that the network side obtains the IMEI of the terminal device. And then, the network side determines the terminal type according to the IMEI and a preset abnormal terminal library. For example, the network side stores the IMEI of the terminal device with a higher packet loss rate in an abnormal terminal library, after the IMEI of the terminal device is obtained, the abnormal terminal library is searched according to the IMEI of the terminal device, if the same IMEI can be found, the terminal type is determined to be an abnormal terminal, otherwise, the terminal type is a normal terminal, the abnormal terminal is configured with special eSRVCC parameter information, and the normal terminal adopts the existing general eSRVCC parameter information, wherein the special eSRVCC parameter information can be determined according to actual conditions, for example, a switching threshold is set to be higher than a general eSRVCC switching threshold, so that the abnormal terminal can enter an eSRVCC switching process in advance, and after the abnormal terminal is far away from an LTE coverage area, VoLTE can be switched from a PS domain to a 2G/3G CS domain in time.
Step S22, receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to the terminal type;
specifically, the network side issues a radio resource control RRC reconfiguration message to the UE, where the message carries enhanced single radio voice call continuity eSRVCC parameter information of a terminal type corresponding to the UE, and the UE receives the RRC reconfiguration message and obtains the eSRVCC parameter information through analysis.
For example, if the network side determines that the UE is an abnormal terminal, the dedicated eSRVCC parameter information is carried in an RRC reconfiguration message issued to the UE, and after receiving the RRC reconfiguration message, the UE obtains the dedicated eSRVCC parameter information by parsing.
Step S23, in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side;
specifically, in the VoLTE communication process of the UE, the UE detects in real time whether a received signal meets a condition set by eSRVCC parameter information issued by a network side, if so, indicates that eSRVCC switching is required, and reports an eSRVCC measurement event report to the network side, and if not, indicates that the UE can continue to use VoLTE communication without reporting the eSRVCC measurement event report to the network side. For example, if the terminal type corresponding to the UE is an abnormal terminal, the RRC reconfiguration message received by the UE carries dedicated eSRVCC parameter information, and the UE detects in real time whether the received signal meets the condition set by the dedicated eSRVCC parameter information, and if so, indicates that the UE needs to perform eSRVCC handover, reports an eSRVCC measurement event report to the network side, performs eSRVCC handover, and switches the voice call to the CS domain. The UE receives the special eSRVCC parameter information which is different from the general eSRVCC parameter information, so that the trigger time for reporting the eSRVCC parameter information by the UE is different, and the eSRVCC switching time of the UE is different. For an abnormal terminal, the special eSRVCC parameter information can be set to enable the UE to enter an eSRVCC switching process in advance, so that the problem that the abnormal terminal cannot be switched in time due to the general eSRVCC parameter information can be avoided.
And step S24, receiving the eSRVCC command message issued by the network side, and performing eSRVCC switching.
Specifically, after receiving an eSRVCC measurement event report reported by UE, the network side issues an eSRVCC command message to the UE, the UE executes an eSRVCC switching command, and after the switching is completed, the call is carried on a CS domain, so that the integrity of the call is ensured.
For example, in the access process, the UE receives an identification request issued by the network side, reports the IMEI to the network side, and after receiving the IMEI, the network side matches a pre-designed abnormal terminal library, and if the matching is successful, determines that the terminal category of the UE is an abnormal terminal, and if the matching is failed, determines that the terminal category of the UE is a normal terminal, sets dedicated eSRVCC parameter information for the abnormal terminal, and sets general eSRVCC parameter information for the normal terminal. After the network side establishes a VoLTE bearer (QCI 1) for the UE, the network side issues eSRVCC parameter information to the UE through an RRC reconfiguration message, where the eSRVCC parameter information is issued for the abnormal terminal as dedicated eSRVCC parameter information, and the eSRVCC parameter information is issued for the normal terminal as general eSRVCC parameter information. And after receiving the eSRVCC parameter information, the UE detects whether the eSRVCC parameter information meets the set conditions of the eSRVCC parameter information in real time, if so, an eSRVCC measurement event report is reported, after receiving the eSRVCC measurement event report, the network side issues an eSRVCC command message, and the UE switches the eSRVCC.
The voice service switching method provided by the embodiment of the invention determines the terminal type according to the IMEI of the terminal equipment, and issues different eSRVCC parameter information aiming at different terminal types, thereby overcoming the defect that all the terminal equipment in the same cell can only receive the same eSRVCC parameter information, improving the flexibility of network configuration, ensuring the continuity of the voice service of the terminal equipment of various types and improving the quality of voice switching service.
On the basis of the foregoing embodiment, further, the eSRVCC parameter information includes: a preset threshold for receiving signal strength;
correspondingly, if it is determined that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side, including:
detecting the received signal strength of an LTE network in real time, if the received signal strength is judged to be smaller than the preset threshold, starting inter-system cell measurement, and reporting a measurement report to the network side so that the network side can issue an eSRCC command message according to the measurement report.
Specifically, the network side determines a preset threshold of the received signal strength according to the terminal type, then sends an RRC reconfiguration message to the UE, where the RRC reconfiguration message carries the preset threshold of the received signal strength, and after receiving the RRC reconfiguration message, the UE obtains the preset threshold through analysis. And then, in the process of carrying out VoLTE communication by the UE, detecting the received signal intensity of an LTE network in real time, judging whether the received signal intensity is smaller than a preset threshold, if so, indicating that the LTE network is weaker, continuing VoLTE communication and causing call drop, at the moment, starting measurement of the different system cells by the UE, reporting a measurement report to a network side, and sending an eSRVCC command message by the network side according to the measurement report, wherein the different system cells refer to adjacent cells which belong to different network types with the current service cell of the terminal equipment, for example, the current cell of the terminal equipment is an LTE cell, and the different system cells are 2G/3G cells. The measurement report reported by the UE comprises the received signal strength of the inter-system cell, the network side determines the CS domain cell to be loaded with the VoLTE call according to the received signal strength, and issues an eSRVCC command message to the UE.
For example, the network side sets the eSRVCC parameter of the terminal type abnormal terminal to-100 dBm, which indicates that the UE received signal is lower than-100 dBm, and sets the eSRVCC parameter of the terminal type normal terminal to-110 dBm, which indicates that the UE received signal is lower than-110 dBm, which enables eSRVCC switching. Then, after determining that the VoLTE bearer of the UE is established, the network side distinguishes different terminal types, and carries a corresponding preset threshold of the received signal strength through the RRC reconfiguration message, wherein the preset threshold of the received signal strength transmitted to the abnormal terminal is-100 dBm, and the preset threshold of the received signal strength transmitted to the normal terminal is-110 dBm. Therefore, the eSRVCC switching process is triggered under the condition that the received signal strength is smaller than-100 dBm but larger than-110 dBm, compared with the prior art, the eSRVCC switching process is entered in advance, on one hand, the abnormal terminal is guaranteed to be switched to a CS domain before being away from an LTE network, on the other hand, only a part of VoLTE voice calls are switched for the same received signal strength, and the problem of poor call quality caused by the fact that a large number of calls flow into adjacent cells of the CS domain can not be caused.
The voice service switching method provided by the embodiment of the invention determines the terminal type according to the IMEI of the terminal equipment, and issues different eSRVCC preset thresholds aiming at different terminal types, thereby overcoming the defect that all the terminal equipment in the same cell can only receive the same eSRVCC preset threshold, improving the flexibility of network configuration, ensuring the continuity of the voice service of the terminal equipment of various types and improving the voice switching service quality.
Fig. 3 is a schematic flow chart of a voice service switching method according to another embodiment of the present invention, and as shown in fig. 3, the voice service switching method includes:
step S31, sending an identification request to the terminal equipment;
specifically, in the process of initiating network access by the UE, before the integrity protection algorithm is started, the network side issues an IDENTITY REQUEST message to the UE, and when receiving the IDENTITY REQUEST message, the UE sends an IDENTITY RESPONSE message to the network side, where the message carries the IMEI of the terminal device, and the network side parses the RESPONSE message to obtain the IMEI of the terminal device.
Step S32, receiving an International Mobile Equipment Identity (IMEI) code sent by the terminal equipment, and determining the terminal type of the terminal equipment according to the IMEI code and a preset abnormal terminal library;
specifically, the network side analyzes the response message to obtain the IMEI of the terminal device, the network side stores the IMEI of the terminal device with a higher packet loss rate in an abnormal terminal library in advance, after the IMEI of the terminal device is obtained, the abnormal terminal library is searched according to the IMEI of the terminal device, if the same IMEI can be found, the terminal type is determined to be an abnormal terminal, otherwise, the terminal type is a normal terminal.
Step S33, determining, according to the terminal category, eSRVCC parameter information for enhancing single wireless voice call continuity, and sending a radio resource control RRC reconfiguration message to the terminal device, where the RRC reconfiguration message carries the eSRVCC parameter information, so that the terminal device determines, in a VoLTE communication process, whether a received signal meets a condition set by the eSRVCC parameter information;
specifically, the special eSRVCC parameter information is configured for the abnormal terminal, and the existing general eSRVCC parameter information is adopted for the normal terminal, wherein the special eSRVCC parameter information can be determined according to actual situations, for example, a threshold is set to be higher than the general eSRVCC parameter information, so that the abnormal terminal can enter an eSRVCC switching process in advance, and after the abnormal terminal is far away from an LTE coverage area, the VoLTE can be switched from a PS domain to a 2G/3G CS domain in time. After the network side establishes a VoLTE bearer (QCI 1) for the UE, the network side issues eSRVCC parameter information to the UE through an RRC reconfiguration message, where the eSRVCC parameter information is issued for the abnormal terminal as dedicated eSRVCC parameter information, and the eSRVCC parameter information is issued for the normal terminal as general eSRVCC parameter information. And after receiving the eSRVCC parameter information, the UE detects whether the eSRVCC parameter information meets the conditions set by the eSRVCC parameter information in real time, if so, the reported eSRVCC measurement event report is reported, and after receiving the eSRVCC measurement event report, the network side issues an eSRVCC command message, and the UE switches the eSRVCC.
In practical application, the network side may further divide the abnormal terminal into a plurality of abnormal groups, configure one dedicated eSRVCC parameter information for each abnormal group, and further, the network side may further set one dedicated eSRVCC parameter information for each abnormal terminal individually, which is not limited in the embodiment of the present invention.
And then, the network side issues corresponding eSRVCC parameter information through an RRC reconfiguration message according to the terminal type of the UE, and the UE receives the RRC reconfiguration message and acquires the eSRVCC parameter information through analysis. For example, after the network side completes the establishment of an air interface DRB bearer (QCI ═ 1), corresponding eSRVCC parameter information is issued through an RRC reconfiguration message, and in the course of performing VoLTE communication by the UE, the UE detects in real time whether a received signal meets the conditions set by the eSRVCC parameter information issued by the network side, if so, it indicates that eSRVCC switching is required, and reports an eSRVCC measurement event report to the network side, and if not, it indicates that the UE can continue to use VoLTE communication, and does not need to report an eSRVCC measurement event report to the network side.
Step S34, receiving an eSRVCC measurement event report reported by the terminal equipment;
step S35, sending an eSRVCC command message to the terminal device, so that the terminal device performs eSRVCC switching.
Specifically, after receiving an eSRVCC measurement event report reported by UE, the network side issues an eSRVCC command message to the UE, the UE executes an eSRVCC switching command, and after the switching is completed, the call is carried on a CS domain, so that the integrity of the call is ensured.
The voice service switching method provided by the embodiment of the invention determines the terminal type according to the IMEI of the terminal equipment, and issues different eSRVCC parameter information aiming at different terminal types, thereby overcoming the defect that all the terminal equipment in the same cell can only receive the same eSRVCC parameter information, improving the flexibility of network configuration, ensuring the continuity of the voice service of the terminal equipment of various types and improving the quality of voice switching service.
On the basis of the above embodiment, further, the preset abnormal terminal library is established according to the following method:
acquiring first packet loss rates of all terminal equipment in a coverage area;
if the first packet loss rate is judged to meet the preset abnormal terminal warehousing condition, the IMEI of the terminal equipment is stored, and an abnormal terminal warehouse is determined;
and when the preset abnormal terminal warehousing condition is in a preset period, the times that the first packet loss rate is higher than a first threshold are larger than a second threshold.
Specifically, fig. 4 is a schematic flow chart of a method for entering an abnormal terminal in a voice service switching method according to an embodiment of the present invention, as shown in fig. 4, after obtaining an IMEI of a terminal device, a network side obtains a packet loss rate of the terminal device in real time, and records the packet loss rate as a first packet loss rate, and determines whether the first packet loss rate meets an abnormal terminal entering condition, if so, the terminal device is determined to be an abnormal terminal, the IMEI of the terminal device is stored, and the IMEIs of all abnormal terminals form an abnormal terminal library. The preset abnormal terminal warehousing condition is that the first packet loss rate is higher than a first threshold X1, and the number of times of occurrence of the first packet loss rate is higher than X1 in a preset period is larger than a second threshold Y1. That is to say, the packet loss rate of the abnormal terminal corresponding to the IEMI in the abnormal terminal library is higher and the occurrence frequency of the high packet loss rate is higher, in this case, if the general eSRVCC parameter information is issued to the abnormal terminal, the abnormal terminal cannot receive the eSRVCC parameter information in time due to the high packet loss rate, so that the handover is late, and in the case that the LTE network receiving signal is weaker, the handover cannot be performed in time in the CS domain, so that the call quality is poor.
In practical application, after obtaining the IMEI of the terminal device, the network side searches for an abnormal terminal library, if the same IMEI can be found, the terminal device is indicated to be an abnormal terminal, and meanwhile, the network side obtains the packet loss rate of the terminal device, judges whether the preset abnormal terminal library entry condition is met, and if the preset abnormal terminal library entry condition is met, the abnormal terminal library is updated.
If the UE is judged to be an abnormal terminal, the network side configures the special eSRVCC parameter information of the abnormal terminal, and if the UE is judged to be a normal terminal, the network side uses the existing general eSRVCC parameter information. For example, a generic eSRVCC parameter of-110 dBm, then the network side can set the proprietary eSRVCC parameter to-100 dBm. Fig. 5 is a schematic flow chart of a method for determining eSRVCC parameter information in a voice service switching method provided by an embodiment of the present invention, as shown in fig. 5, a network side may further store, in an IMEI storage unit, an IMEI initiating a VoLTE calling terminal and an IMEI receiving a VoLTE called terminal within a coverage area of the network side, store, in an IMEI unit of an abnormal terminal, an IMEI of a historical abnormal terminal, compare data of the two units in real time, determine that a current terminal is an abnormal terminal if the IMEI of the current terminal can be matched with the IMEI in the IMEI unit of the abnormal terminal, determine eSRVCC parameter configuration of the corresponding abnormal terminal, and use, if the IMEI of the current terminal does not match the IMEI in the abnormal terminal unit, the general eSRVCC parameter configuration of the current terminal.
According to the voice service switching method provided by the embodiment of the invention, the terminal equipment is divided into the abnormal terminal and the normal terminal according to the packet loss rate, the special eSRVCC parameter information is configured for the abnormal terminal, the general eSRVCC parameter information is configured for the normal terminal, the defect that all the terminal equipment in the same cell can only receive the same eSRVCC parameter information is overcome, the flexibility of network configuration is improved, the continuity of the voice service of the abnormal terminal can be ensured, and the voice switching service quality is improved.
On the basis of the foregoing embodiments, further, if it is determined that the first packet loss rate meets a preset abnormal terminal warehousing condition, storing the IMEI of the terminal device, and determining an abnormal terminal library, further includes:
acquiring a second packet loss rate of the terminal equipment corresponding to the IMEI in the abnormal terminal library;
if the second packet loss rate is judged to meet the preset abnormal terminal ex-warehouse condition, deleting the IMEI from the abnormal terminal library;
and the preset abnormal terminal ex-warehouse condition is that the times that the second packet loss rate is lower than the third threshold in the preset period is less than a fourth threshold.
Specifically, fig. 6 is a schematic flow chart of a method for bringing an abnormal terminal out of a library in a voice service switching method according to an embodiment of the present invention, as shown in fig. 6, after determining an abnormal terminal library, a network side obtains a packet loss rate of the abnormal terminal in real time, records the packet loss rate as a second packet loss rate, determines whether the second packet loss rate meets an abnormal terminal out-of-the-library condition, and if so, deletes an IEMI corresponding to the terminal device from the abnormal terminal library. The preset abnormal terminal ex-warehouse condition is that the second packet loss rate is lower than a third threshold X2, and the number of times of occurrence of the second packet loss rate lower than X2 in the preset period is smaller than a fourth threshold Y2. That is to say, the packet loss rate of the terminal device corresponding to the IEMI in the abnormal terminal library is low, in this case, if the eSRVCC parameter information dedicated for the abnormal terminal is continuously issued to the terminal device, the VoLTE call of the terminal device is switched to the CS domain too early, so that the user cannot enjoy the high-definition voice call of VoLTE well, and therefore, the terminal device needs to be removed from the abnormal terminal library to update the abnormal terminal library.
Fig. 7 is a schematic flow chart of a voice service switching method according to still another embodiment of the present invention, and as shown in fig. 7, the voice service switching method includes:
step S71, the network side acquires the IMEI of the terminal equipment;
step S72, matching the abnormal terminal library on the network side, determining whether the terminal equipment is an abnormal terminal, if so, executing step S73, otherwise, executing step S74;
step S73, the network side sends down special eSRVCC parameter information to the UE through RRC reconfiguration message;
step S74, the network side sends down the general eSRVCC parameter information to the UE through the RRC reconfiguration message;
step S75, the UE judges whether the special eSRVCC parameter setting condition is satisfied, if yes, the step S77 is executed, otherwise, the process is ended;
step S76, the UE judges whether the conditions set by the general eSRVCC parameters are met, if yes, the step S77 is executed, otherwise, the process is ended;
step S77, UE reports eSRVCC event report to network side;
step S78, the network side issues an eSRVCC command message to the UE, and the UE executes an eSRVCC process.
Fig. 8 is a signaling diagram of a voice service switching method according to another embodiment of the present invention, where a UE is a terminal device, an ENB, an MME, an SGW, and a PGW are LTE network elements, the ENB is a base station, the MME is a mobility management entity, the SGW is a serving gateway, and the PGW is a PND gateway, as shown in fig. 8, the voice service switching method includes:
step S81, the terminal equipment sends a request RRCConnectionRequest for establishing RRC connection to the base station;
step S82, the base station feeds back a message RRCConnectionSetup for establishing RRC connection to the terminal equipment;
step S83, the terminal equipment sends a message RRCConnectionSetupCompute for establishing RRC connection to the base station;
step S84, the base station sends UE initialization message INTIALUEMESSAGE to MME, wherein the air interface initialization message is Service Request NAS-PDU;
step S85, MME sends initialization CONTEXT SETUP REQUEST INTIAL CONTEXT SETUP REQUEST to base station, carrying field SETUP-QCI9/QCI5, indicating that MME has SRVCC function;
step S86, the base station sends identification REQUEST to the terminal device;
step S87, the terminal equipment sends an identification RESPONSE to the base station, and the identification RESPONSE carries IMEI;
step S88, the base station sends a security mode establishing command SecurityModeCommand to the terminal equipment;
step S89, the terminal feeds back a response SecurityModecomplete for establishing the security mode to the base station;
step S810, the base station sends RRC reconfiguration message RRCConnectionReconfiguration to the terminal equipment;
step S811, the terminal sends an RRC reconfiguration complete response rrcconnectionreconfiguration complete to the base station;
step S812, the base station sends an initialization CONTEXT SETUP RESPONSE INTIAL CONTEXT SETUP RESPONSE to the MME;
step S813, MME sends a Modify Bearer Request to a serving gateway;
step S814, the PDN gateway sends a modification Bearer Response to the MME;
step S815, the terminal equipment sends SIP signaling to the PDN gateway, carries an INVITE field and indicates that VoLTE communication needs to be established;
step S816, the PDN gateway sends SIP signaling to the terminal, and the SIP signaling carries a 100Trying field;
step S817, the PDN gateway sends a Request for establishing a Bearer Create Bearer Request to the service gateway;
step S818, the service gateway sends a Create Bearer Request to the MME;
step S819, MME sends E-RAB (evolved Radio Access BEARER) establishment REQUEST E-RAB SETUP REQUEST/ACTIVE DEDICATED EPS BEARER CONTEXT REQUEST to the base station;
step S820, the base station sends RRC reconfiguration message RRCConnectionReconfiguration to the terminal equipment, and carries ACTIVE DEDICATED EPS BEARER CONTEXT REQUEST information;
step S821, the terminal device sends an RRC reconfiguration complete response rrcconnectionreconfiguration complete to the base station;
step S822, the base station sends E-RAB SETUP RESPONSE to the MME;
step S823, the terminal equipment sends a UL Information Transfer to the base station, wherein the UL Information Transfer carries ACTIVATE DEDICATED EPS BEARER CONTEXT ACCEPT Information;
step S824, the base station sends an UPLINK non-access stratum direct transfer message UPLINK NAS TRANSPORT to the MME, and carries ACTIVATE DEDICATED EPS BEARER CONTEXT ACCEPT information;
step S825, the MME sends a Create Bearer Response to the serving gateway;
step S826, the service gateway sends a Create Bearer Response to the PDN gateway;
step S827, the base station sends an RRC reconfiguration message RRCConnectionReconfiguration to the terminal device, carrying eSRVCC parameter information;
step S828, the terminal device sends an RRC reconfiguration complete response rrcconnectionreconfiguration complete to the base station;
step S829, the terminal device sends a Measurement Report to the base station;
step S830, the base station sends a Handover request to the mobile station;
step S831, MME sends PS-to-CS request to PDN gateway, carrying IMSI, target IDTarget-ID and STN-SR (Session Transfer Number-Single Radio) parameters, wherein CS (Circuit switched Domain) domain is a circuit switched domain, PS (Packet switched Domain) domain is a Packet switched domain;
step S832, the PDN gateway sends a PS-to-CS response to the MME;
step S833, the MME sends a Handover Command to the base station;
step S834, the base station sends a cell change command to the terminal device, which carries information such as cell switching, and the terminal device performs the eSRVCC process.
Step S86-step S87 is a process of acquiring IMEI of the terminal equipment by the base station; step S810-step S818 are to initiate a VoLTE call for the terminal device, and the core network establishes a QCI-1 bearer; step S819 to step S822 are detecting, by the base station, whether the QCI ═ 1 bearer has been established, that is, whether the terminal is in VoLTE communication; step S827-step S828 issue eSRVCC parameter information for the base station; step S29 is followed by eSRVCC reporting, decision and execution.
According to the voice service switching method provided by the embodiment of the invention, the terminal equipment is divided into the abnormal terminal and the normal terminal according to the packet loss rate, the special eSRVCC parameter information is configured for the abnormal terminal, the general eSRVCC parameter information is configured for the normal terminal, and the abnormal terminal library is updated in real time, so that the defect that all terminal equipment in the same cell can only receive the same eSRVCC parameter information is overcome, the flexibility of network configuration is improved, the continuity of the voice service of the abnormal terminal can be ensured, and the voice switching service quality is improved.
Fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention, as shown in fig. 9, the terminal device includes: a first sending module 91, a first receiving module 92, a reporting module 93, and a switching module 94, where:
the first sending module 91 is configured to receive an identification request issued by a network side, and send an international mobile equipment identity code IMEI to the network side, so that the network side determines a terminal type according to the IMEI and a preset abnormal terminal library; the first receiving module 92 is configured to receive a radio resource control RRC reconfiguration message issued by a network side, where the RRC reconfiguration message carries enhanced single radio voice call continuity eSRVCC parameter information corresponding to the terminal type; the reporting module 93 is configured to report an eSRVCC measurement event report to the network side if it is determined that the received signal meets the condition set by the eSRVCC parameter information in the VoLTE communication process; the switching module 94 is configured to receive the eSRVCC command message issued by the network side, and perform eSRVCC switching.
After receiving the identifier REQUEST message, the first sending module 91 sends an identifier RESPONSE message to the network side to enable the network side to obtain the IMEI of the terminal device. Then, the network side determines the terminal type according to the IMEI and a preset abnormal terminal library, for example, the network side divides the UE into two types, an abnormal terminal and a normal terminal, configures the special eSRVCC parameter information for the abnormal terminal, and adopts the existing general eSRVCC parameter information for the normal terminal, where the special eSRVCC parameter information can be determined according to the actual situation. The network side issues a radio resource control RRC reconfiguration message to the first receiving module 92, where the message carries the enhanced single radio voice call continuity eSRVCC parameter information of the terminal type, and the first receiving module 92 receives the RRC reconfiguration message and obtains the eSRVCC parameter information through analysis.
In the process of performing VoLTE communication by the UE, the reporting module 93 detects in real time whether the received signal meets the condition set by the eSRVCC parameter information issued by the network side, if so, it indicates that eSRVCC switching is required, the reporting module 93 reports an eSRVCC measurement event report to the network side, and if not, it indicates that the UE can continue to use VoLTE communication without reporting the eSRVCC measurement event report to the network side. After receiving the eSRVCC measurement event report reported by the UE, the network side issues an eSRVCC command message to the switching module 94, the switching module 94 executes the eSRVCC switching command, and after the switching is completed, the call is carried over the CS domain, thereby ensuring the integrity of the call. The terminal device provided in the embodiment of the present invention is configured to implement the method, and the functions of the terminal device specifically refer to the method embodiment, which is not described herein again.
The terminal equipment provided by the embodiment of the invention determines the terminal type according to the IMEI of the terminal equipment, and issues different eSRVCC parameter information aiming at different terminal types, so that the defect that all the terminal equipment in the same cell can only receive the same eSRVCC parameter information is overcome, the flexibility of network configuration is improved, the continuity of voice services of the terminal equipment of various types can be ensured, and the voice switching service quality is improved.
Fig. 10 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 10, the network-side device includes: a second sending module 101, a classification module 102, a parameter configuration module 103, a second receiving module 104, and a third sending module 105, wherein:
the second sending module 101 sends an identification request to the terminal device; the classification module 102 receives an international mobile equipment identity code IMEI sent by the terminal equipment, and determines a terminal category of the terminal equipment according to an abnormal terminal library preset by the IMEI; the parameter configuration module 103 determines, according to the terminal category, to enhance the continuity of the single wireless voice call eSRVCC parameter information, and sends a radio resource control RRC reconfiguration message to the terminal device, where the RRC reconfiguration message carries the eSRVCC parameter information, so that the terminal device determines, in a VoLTE communication process, whether a received signal meets a condition set by the eSRVCC parameter information; the second receiving module 104 receives an eSRVCC measurement event report reported by the terminal device; the third sending module 105 sends an eSRVCC command message to the terminal device, so that the terminal device performs eSRVCC switching.
Specifically, the second sending module 101 issues an identification REQUEST IDENTITY REQUEST to the UE, and requires the terminal device to report device information (such as IMEI), and then the terminal device in the EMM connection state feeds back an identification RESPONSE IDENTITY RESPONSE to the classifying module 102, and the classifying module 102 obtains the IMEI of the UE from the RESPONSE message. The classification module 102 determines the terminal category according to the abnormal terminal library preset by the IMEI, for example, the classification module 102 classifies the UE into two categories, i.e. an abnormal terminal and a normal terminal.
The parameter configuration module 103 configures the special eSRVCC parameter information for the abnormal terminal, and adopts the existing general eSRVCC parameter information for the normal terminal. After the second receiving module 104 receives the eSRVCC measurement event report reported by the UE, the third sending module 105 issues an eSRVCC command message to the UE, the UE executes an eSRVCC switching command, and after the switching is completed, the call is carried in the CS domain, thereby ensuring the integrity of the call. The apparatus provided in the embodiment of the present invention is configured to implement the method, and its functions specifically refer to the method embodiment, which is not described herein again.
The network side equipment provided by the embodiment of the invention determines the terminal type according to the IMEI of the terminal equipment, issues different eSRVCC parameter information aiming at different terminal types, makes up the defect that all the terminal equipment in the same cell can only receive the same eSRVCC parameter information, improves the flexibility of network configuration, can ensure the continuity of voice services of the terminal equipment of various types, and improves the quality of voice switching service.
Fig. 11 is a schematic structural diagram of a voice service switching system provided in an embodiment of the present invention, and as shown in fig. 11, the voice service switching system includes: the functions of the terminal device 111 in the voice service switching system specifically refer to the terminal device embodiment, and the functions of the network-side device 112 in the voice service switching system specifically refer to the network-side device embodiment, which are not described herein again.
Fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 12, the electronic device includes: a processor (processor)121, a memory (memory)122, and a bus 123;
wherein, the processor 121 and the memory 122 complete the communication with each other through the bus 123;
An embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer can execute the methods provided by the above method embodiments, for example, the method includes: receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library; receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to the terminal type; in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side; and receiving the eSRVCC command message issued by the network side, and carrying out eSRVCC switching.
Embodiments of the present invention provide a non-transitory computer-readable storage medium, which stores computer instructions, where the computer instructions cause the computer to perform the methods provided by the above method embodiments, for example, the methods include: receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library; receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to the terminal type; in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side; and receiving the eSRVCC command message issued by the network side, and carrying out eSRVCC switching.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the apparatuses and the like are merely illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for switching voice services, comprising:
receiving an identification request issued by a network side, and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library;
receiving a Radio Resource Control (RRC) reconfiguration message issued by a network side, wherein the RRC reconfiguration message carries enhanced single radio voice call continuity (eSRVCC) parameter information corresponding to the terminal type;
in the VoLTE communication process, if judging that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side;
receiving an eSRVCC command message issued by the network side, and performing eSRVCC switching;
the preset abnormal terminal library is established according to the following method:
acquiring first packet loss rates of all terminal equipment in a coverage area;
if the first packet loss rate is judged to meet the preset abnormal terminal warehousing condition, the IMEI of the terminal equipment is stored, and an abnormal terminal warehouse is determined;
the preset abnormal terminal warehousing condition is that the times that the first packet loss rate is higher than a first threshold is larger than a second threshold in a preset period;
the terminal category and eSRVCC parameter information thereof are determined according to the following method:
and searching an abnormal terminal library according to the IMEI of the terminal equipment, if the same IMEI can be searched, determining that the terminal type is an abnormal terminal, otherwise, determining that the terminal type is a normal terminal, configuring special eSRVCC parameter information for the abnormal terminal, and adopting general eSRVCC parameter information for the normal terminal.
2. The method of claim 1, wherein the eSRVCC parameter information comprises: a preset threshold for receiving signal strength;
correspondingly, if it is determined that the received signal meets the condition set by the eSRVCC parameter information, reporting an eSRVCC measurement event report to the network side, including:
detecting the received signal strength of an LTE network in real time, if the received signal strength is judged to be smaller than the preset threshold, starting inter-system cell measurement, and reporting a measurement report to the network side so that the network side can issue an eSRCC command message according to the measurement report.
3. A method for switching voice services, comprising:
sending an identification request to the terminal equipment;
receiving an International Mobile Equipment Identity (IMEI) code sent by the terminal equipment, and determining the terminal type of the terminal equipment according to the IMEI code and a preset abnormal terminal library;
determining enhanced single radio voice call continuity (eSRVCC) parameter information according to the terminal category, and sending a Radio Resource Control (RRC) reconfiguration message to the terminal equipment, wherein the RRC reconfiguration message carries the eSRVCC parameter information, so that the terminal equipment can judge whether a received signal meets the condition set by the eSRVCC parameter information or not in the VoLTE communication process;
receiving an eSRVCC measurement event report reported by the terminal equipment;
sending an eSRVCC command message to the terminal equipment so as to enable the terminal equipment to carry out eSRVCC switching;
the preset abnormal terminal library is established according to the following method:
acquiring first packet loss rates of all terminal equipment in a coverage area;
if the first packet loss rate is judged to meet the preset abnormal terminal warehousing condition, the IMEI of the terminal equipment is stored, and an abnormal terminal warehouse is determined;
the preset abnormal terminal warehousing condition is that the times that the first packet loss rate is higher than a first threshold is larger than a second threshold in a preset period;
the terminal category and eSRVCC parameter information thereof are determined according to the following method:
and searching an abnormal terminal library according to the IMEI of the terminal equipment, if the same IMEI can be searched, determining that the terminal type is an abnormal terminal, otherwise, determining that the terminal type is a normal terminal, configuring special eSRVCC parameter information for the abnormal terminal, and adopting general eSRVCC parameter information for the normal terminal.
4. The method according to claim 3, wherein if it is determined that the first packet loss rate meets a preset abnormal terminal warehousing condition, storing an IMEI of the terminal device, and determining an abnormal terminal warehouse, further comprises:
acquiring a second packet loss rate of the terminal equipment corresponding to the IMEI in the abnormal terminal library;
if the second packet loss rate is judged to meet the preset abnormal terminal ex-warehouse condition, deleting the IMEI from the abnormal terminal library;
and the preset abnormal terminal ex-warehouse condition is that the times that the second packet loss rate is lower than the third threshold in the preset period is less than a fourth threshold.
5. A terminal device, comprising:
the first sending module is used for receiving an identification request issued by a network side and sending an International Mobile Equipment Identity (IMEI) code to the network side so that the network side can determine the terminal type according to the IMEI and a preset abnormal terminal library;
a first receiving module, configured to receive a radio resource control RRC reconfiguration message issued by a network side, where the RRC reconfiguration message carries enhanced single radio voice call continuity eSRVCC parameter information corresponding to the terminal type;
a reporting module, configured to report an eSRVCC measurement event report to the network side if it is determined that a received signal meets a condition set by the eSRVCC parameter information in a VoLTE communication process;
the switching module is used for receiving the eSRVCC command message issued by the network side and carrying out eSRVCC switching;
the preset abnormal terminal library is established according to the following method:
acquiring first packet loss rates of all terminal equipment in a coverage area;
if the first packet loss rate is judged to meet the preset abnormal terminal warehousing condition, the IMEI of the terminal equipment is stored, and an abnormal terminal warehouse is determined;
the preset abnormal terminal warehousing condition is that the times that the first packet loss rate is higher than a first threshold is larger than a second threshold in a preset period;
the terminal category and eSRVCC parameter information thereof are determined according to the following method:
and searching an abnormal terminal library according to the IMEI of the terminal equipment, if the same IMEI can be searched, determining that the terminal type is an abnormal terminal, otherwise, determining that the terminal type is a normal terminal, configuring special eSRVCC parameter information for the abnormal terminal, and adopting general eSRVCC parameter information for the normal terminal.
6. A network-side device, comprising:
the second sending module is used for sending an identification request to the terminal equipment;
the classification module is used for receiving an International Mobile Equipment Identity (IMEI) code sent by the terminal equipment and determining the terminal category of the terminal equipment according to the IMEI code and a preset abnormal terminal library;
a parameter configuration module, configured to determine, according to the terminal category, to enhance single wireless voice call continuity eSRVCC parameter information, and send a radio resource control RRC reconfiguration message to the terminal device, where the RRC reconfiguration message carries the eSRVCC parameter information, so that the terminal device determines, in a VoLTE communication process, whether a received signal meets a condition set by the eSRVCC parameter information;
a second receiving module, configured to receive an eSRVCC measurement event report reported by the terminal device;
a third sending module, configured to send an eSRVCC command message to the terminal device, so that the terminal device performs eSRVCC switching;
the preset abnormal terminal library is established according to the following method:
acquiring first packet loss rates of all terminal equipment in a coverage area;
if the first packet loss rate is judged to meet the preset abnormal terminal warehousing condition, the IMEI of the terminal equipment is stored, and an abnormal terminal warehouse is determined;
the preset abnormal terminal warehousing condition is that the times that the first packet loss rate is higher than a first threshold is larger than a second threshold in a preset period;
the terminal category and eSRVCC parameter information thereof are determined according to the following method:
and searching an abnormal terminal library according to the IMEI of the terminal equipment, if the same IMEI can be searched, determining that the terminal type is an abnormal terminal, otherwise, determining that the terminal type is a normal terminal, configuring special eSRVCC parameter information for the abnormal terminal, and adopting general eSRVCC parameter information for the normal terminal.
7. A voice service switching system, characterized in that it comprises at least one terminal device according to claim 5 and a network side device according to claim 6.
8. An electronic device, comprising:
the processor and the memory are communicated with each other through a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 4.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1 to 4.
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| CN114070497B (en) * | 2020-07-30 | 2023-02-03 | 上海华为技术有限公司 | Method, equipment and storage medium for sending message |
| CN112291823B (en) * | 2020-11-04 | 2023-04-18 | 中国联合网络通信集团有限公司 | Service processing method and device under NSA (non-switched network architecture) shared network and electronic equipment |
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