CN117135702A - Call control method and device, mobile terminal and storage medium - Google Patents

Call control method and device, mobile terminal and storage medium Download PDF

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Publication number
CN117135702A
CN117135702A CN202210554727.9A CN202210554727A CN117135702A CN 117135702 A CN117135702 A CN 117135702A CN 202210554727 A CN202210554727 A CN 202210554727A CN 117135702 A CN117135702 A CN 117135702A
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China
Prior art keywords
mobile terminal
esr
timer
value
timing
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CN202210554727.9A
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Chinese (zh)
Inventor
黄宏章
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Guangdong Genius Technology Co Ltd
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Guangdong Genius Technology Co Ltd
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Priority to CN202210554727.9A priority Critical patent/CN117135702A/en
Publication of CN117135702A publication Critical patent/CN117135702A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Abstract

The embodiment of the application discloses a call control method, a call control device, a mobile terminal and a storage medium, wherein the call control method comprises the following steps: when a CS service request issued by the network equipment is received, ESR information is sent to the network equipment, wherein the ESR information is used for indicating that the mobile terminal needs to fall back to a CS network; searching whether a preset delay cell list contains a current service cell of the mobile terminal or not; when the ESR timer is included, acquiring a preset duration value as a timing value of the ESR timer of the mobile terminal and starting timing, wherein the preset duration value is larger than a default timing value of the ESR timer; when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value, detecting that the RRC link is released by the network equipment and falls back to the CS network for conversation; the method is used for improving the call completing rate and improving the user call experience.

Description

Call control method and device, mobile terminal and storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a call control method, a call control device, a mobile terminal, and a storage medium.
Background
On a long term evolution (Long Term Evolution, LTE) network, when a UE (User) receives a Circuit Switched (CS) service request sent by a base station, an extended service request (Extended Service Request, ESR) is initiated to the base station, and a default ESR TIMER (t3417_ext_timer) is started. After receiving the ESR information sent by the mobile terminal under normal conditions, the base station releases the radio resource control (Radio Resource Control, RRC) after the ESR timer expires, and then the mobile terminal falls back to 2G or 3G for communication. However, if the ESR timer of the base station is set abnormally or other tasks with higher priority need to be executed, RRC release cannot be performed after the ESR timer is overtime, and the ESR timer synchronized on the mobile terminal is overtime, but because the RRC is not released, the mobile terminal cannot fall back to 2G or 3G to perform a call, so that the call cannot be connected, and the user call experience is affected.
Disclosure of Invention
The embodiment of the application discloses a call control method, a call control device, a mobile terminal and a storage medium, which are used for improving call completing rate and improving user call experience.
The first aspect of the embodiment of the application discloses a call control method, which can comprise the following steps:
when receiving a Circuit Switching (CS) service request issued by network equipment, sending ESR information of an extended service request to the network equipment, wherein the ESR information is used for indicating that a mobile terminal needs to fall back to a CS network;
searching whether a preset delay cell list contains a current service cell of the mobile terminal or not;
when the ESR timer is included, acquiring a preset duration value as a timing value of the ESR timer of the mobile terminal and starting timing, wherein the preset duration value is larger than a default timing value of the ESR timer;
and detecting that a Radio Resource Control (RRC) link is released by the network equipment and falls back to the CS network for conversation when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value.
As an optional implementation manner, in the first aspect of the embodiment of the present application, the method further includes:
when the preset delay cell list does not contain the current service cell, acquiring a default timing value of the ESR timer as the timing value of the ESR timer of the mobile terminal and starting timing;
and after the real-time timing value of the ESR timer meets the default timing value, if the release of the RRC link by the network equipment is not detected, recording the current service cell into the preset delay cell list.
As an optional implementation manner, in the first aspect of the embodiment of the present application, after the real-time timing value of the ESR timer meets the default timing value, if the RRC link is not detected to be released by the network device, after the recording of the current serving cell in the preset delay cell list, the method further includes:
and transmitting a Tracking Area Updating (TAU) request to the network equipment by the mobile terminal to release the RRC link, wherein the TAU request is used for requesting the network equipment to release the RRC link.
As an optional implementation manner, in the first aspect of the embodiment of the present application, the method further includes:
triggering a TAU timer to start timing while sending a tracking area update TAU request to the network equipment;
and when the real-time timing value of the TAU timer is smaller than or equal to a timing threshold value, detecting that the network equipment releases the RRC link and falls back to a CS network for conversation.
As an optional implementation manner, in the first aspect of the embodiment of the present application, the method further includes:
and after the real-time timing value of the TAU timer meets the timing threshold, if the network equipment is detected not to release the RRC link, determining that the call connection fails.
The second aspect of the embodiment of the application discloses a call control device, which can comprise:
the receiving and transmitting module is used for transmitting ESR information of the extended service request to the network equipment when receiving a Circuit Switched (CS) service request issued by the network equipment, wherein the ESR information is used for indicating that the mobile terminal needs to fall back to a CS network;
the searching module is used for searching whether a preset delay cell list contains a current service cell of the mobile terminal or not;
the timing module is used for acquiring a preset duration value as a timing value of an ESR timer of the mobile terminal and starting timing when the searching module searches that the preset delay cell list contains the current service cell of the mobile terminal, wherein the preset duration value is larger than a default timing value of the ESR timer;
and the fallback module is used for detecting that the Radio Resource Control (RRC) link is released by the network equipment and falls back to the CS network for conversation when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value.
As an optional implementation manner, in the second aspect of the embodiment of the present application, the apparatus further includes:
the timing module is further configured to, when the searching module finds that the preset delay cell list does not include the current serving cell of the mobile terminal, acquire a default timing value of the ESR timer as the timing value of the ESR timer of the mobile terminal and start timing;
and the recording module is used for recording the current service cell into the preset delay cell list if the release of the RRC link by the network equipment is not detected after the real-time timing value of the ESR timer meets the default timing value.
In a second aspect of the embodiment of the present application, the transceiver module is further configured to, after the real-time timing value of the ESR timer satisfies the default timing value, if the release of the RRC link by the network device is not detected, record the current serving cell in the preset delay cell list, release the RRC link by using the mobile terminal, and send a tracking area update TAU request to the network device, where the TAU request is used to request the network device to release the RRC link.
As an optional implementation manner, in the second aspect of the embodiment of the present application, the timing module is further configured to trigger a TAU timer to start timing while the transceiver module sends a tracking area update TAU request to the network device;
and the fallback module is further configured to, when the real-time timing value of the TAU timer is less than or equal to a timing threshold, detect that the network device releases the RRC link, and fallback to the CS network for communication.
A third aspect of the embodiment of the present application discloses a mobile terminal, which may include:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to execute a call control method disclosed in the first aspect of the embodiment of the present application.
A fourth aspect of the embodiments of the present application discloses a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of any of the methods of the first aspect of the embodiments of the present application.
A fifth aspect of the embodiments of the present application discloses a computer program product which, when run on a computer, causes the computer to perform part or all of the steps of any one of the methods of the first aspect.
A sixth aspect of the embodiments of the present application discloses an application publishing platform for publishing a computer program product, wherein the computer program product, when run on a computer, causes the computer to perform part or all of the steps of any one of the methods of the first aspect.
Compared with the prior art, the embodiment of the application has the following beneficial effects:
in the embodiment of the application, when a CS service request issued by network equipment is received, ESR information is sent to the network equipment, the ESR information is used for indicating that the mobile terminal needs to fall back to a CS network for communication, then whether a preset delay cell list contains a current service cell of the mobile terminal or not is searched, when the current service cell is contained, a preset duration value is obtained as a timing value of an ESR timer of the mobile terminal and begins to time, wherein the preset duration value is larger than a default timing value of the ESR timer, and when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value, and the release of an RRC link by the network equipment is detected, the mobile terminal can fall back to the CS network for communication; by implementing the embodiment of the application, a delay cell list is preset, if the current service cell of the mobile terminal is contained in the preset delay cell list, a preset time length value longer than a default time length value is obtained and used as the time length value of an ESR timer to time, so that the time length for detecting whether the network equipment releases the RRC link is prolonged, the network equipment can be more accurately checked to be capable of normally releasing the RRC link, the call completing rate is improved, and the user call experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of an application system architecture disclosed in an embodiment of the present application;
fig. 2 is a flow chart of a call control method according to an embodiment of the present application;
fig. 3 is a flow chart of a call control method according to a second embodiment of the present application;
fig. 4 is a schematic structural diagram of a call control device according to an embodiment of the present application;
fig. 5 is a flow chart of a call control device according to a second embodiment of the present application;
fig. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the terms "first," "second," "third," and "fourth," etc. in the description and claims of the present application are used for distinguishing between different objects and not for describing a particular sequential order. The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
The radio resource control (Radio Resource Control, RRC) protocol is located at the bottom layer of the third layer of the LTE-a (LTE-Advanced) air interface protocol stack, and an RRC link is established between the mobile terminal and the network device, where the RRC link mainly includes two types of: an IDLE state (rrc_idle) and a CONNECTED state (rrc_connected).
The IDLE state (rrc_idle) of the RRC link includes two sub-states:
(1) NULL (NULL state): the network end is in an empty state when the network end is just started; or the network device will automatically jump to the null state after an irreparable error such as an underlying link failure occurs.
(2) IDL (idle state): when the network device is in an idle state, the system information can be encoded and a media access control layer (Media Access Control, MAC) sub-layer can be configured to broadcast the system information, so that the mobile terminal can obtain the current system information in real time. The RRC can also configure the mobile terminal to perform channel measurement in an idle state, so that the network equipment can monitor the channel quality in real time and configure the mobile terminal to reside in a more suitable cell. When the network device receives the paging request of another mobile terminal, the RRC sublayer encodes the paging message through the functional entity of ASN.1 and sends the paging message to the paged terminal.
The state of the connection state (rrc_connected) is similarly divided into three different states, ACC (random access state), CON (connection state) and HO (handover), and will not be described in detail here.
As shown in fig. 1, a system architecture diagram according to an embodiment of the present application is shown. The system architecture may include a network device and a mobile terminal. The network device may further include an access network device and a core network device. I.e. the wireless communication system further comprises a plurality of core networks for communicating with the access network devices. The access network device may be an LTE system, a next-generation (NR) system, or an evolved base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also referred to as "small base station"), pico base station, access Point (AP), transmission point (transmission point, TP), or new generation base station (new generation Node B, gnob) in an licensed assisted access long term evolution (LAA-LTE) system. The network device may also be a future 5G communication system or other type of network device in a future evolution network.
The mobile terminal in the embodiment of the present application may be referred to as a User Equipment (UE). The mobile terminal may be a personal communication service (personal communication service, PCS) phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA) or the like, or a handset, mobile Station (MS), mobile terminal (mobile terminal), laptop or the like, which may communicate with one or more core networks via a radio access network (radio access network, RAN). For example, the mobile terminal may be a mobile telephone (or "cellular" telephone) or a computer or the like having a mobile terminal, e.g., a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges voice and/or data with the radio access network. The mobile terminal may also be a handheld device, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a mobile terminal in a future 5G network or a mobile terminal in a future evolving network, etc. with wireless communication capabilities. The above is merely an example, and the practical application is not limited thereto.
Referring to fig. 2, fig. 2 is a flow chart of a call control method according to an embodiment of the application; as shown in fig. 2, the call control method may include:
201. and when receiving the CS service request issued by the network equipment, sending ESR information of the extended service request to the network equipment, wherein the ESR information is used for indicating that the mobile terminal needs to fall back to the CS network.
The execution body of the embodiment of the application is a call control device or a mobile terminal, and optionally, the call control device can be built in the mobile terminal.
When the mobile terminal receives a CS service request issued by the network device in the LTE network, the mobile terminal may send ESR information to the network device to request to release the RRC link so as to enable normal fallback to the CS network for a call, and the CS network may be, for example, a 2G or 3G network, and further, the mobile terminal falls back from the LTE network to the 2G or 3G network for a call.
202. Searching whether a preset delay cell list contains a current service cell of the mobile terminal. Wherein, if so, steps 203-204 are performed; if not, steps 205-206 are performed.
The preset time delay cell list is used for recording cells which still cannot release the LTE RRC link after the ESR timer is overtime, and for the cells, the time value of the ESR timer is changed from a default time value to a preset time length value, and the preset time length value is larger than the default time length value, so that the time for waiting for the cells in the preset time delay cell list to release the RRC link is prolonged, and whether the RRC link can be normally released or not is checked more effectively, thereby improving the call efficiency.
Therefore, in step 202, the current serving cell of the mobile terminal is acquired, and whether the current serving cell is in the preset delay cell list is first searched to determine the timing value of the ESR timer.
203. And acquiring a preset duration value as a timing value of the ESR timer of the mobile terminal and starting timing, wherein the preset duration value is larger than a default timing value of the ESR timer.
And if the current serving cell is in the preset delay cell list, acquiring a preset duration value as a timing value of an ESR timer in the mobile terminal and starting to count, and determining that the ESR timer is overtime after the real-time timing value of the ESR timer exceeds the preset duration value.
Illustratively, the ESR TIMER may be t3417_ext_timer in the protocol.
204. And when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value, detecting that the Radio Resource Control (RRC) link is released by the network equipment and falling back to the CS network for conversation.
The method comprises the steps of counting time by an ESR timer to detect whether an LTE RRC link is released by network equipment or not in the timing of the ESR timer, and enabling the LTE RRC link to fall back to a CS network for communication only after the LTE RRC link is released by the network equipment in the non-timeout period, wherein if the timing of the ESR timer is overtime and the LTE RRC link is not released, the LTE RRC link cannot fall back to the CS network normally, and the communication cannot be switched on, so that communication failure is caused.
205. The default timer value is obtained as the timer value of the ESR timer of the mobile terminal and begins counting.
206. And when the real-time timing value of the ESR timer is smaller than or equal to the default timing value, detecting that the RRC link is released by the network equipment and falls back to the CS network for conversation.
In the embodiment of the application, when a CS service request issued by network equipment is received, ESR information is sent to the network equipment, the ESR information is used for indicating that the mobile terminal needs to fall back to a CS network for communication, then whether a preset delay cell list contains a current service cell of the mobile terminal or not is searched, when the current service cell is contained, a preset duration value is obtained as a timing value of an ESR timer of the mobile terminal and begins to time, wherein the preset duration value is larger than a default timing value of the ESR timer, and when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value, and the release of an RRC link by the network equipment is detected, the mobile terminal can fall back to the CS network for communication; by implementing the embodiment of the application, a delay cell list is preset, if the current service cell of the mobile terminal is contained in the preset delay cell list, a preset time length value longer than a default time length value is obtained and used as the time length value of an ESR timer to time, so that the time length for detecting whether the network equipment releases the RRC link is prolonged, the network equipment can be more accurately checked to be capable of normally releasing the RRC link, the call completing rate is improved, and the user call experience is improved.
Referring to fig. 3, fig. 3 is a flow chart of a call control method according to a second embodiment of the application; as shown in fig. 3, the call control method may include:
301. and when receiving a CS service request issued by the network equipment, sending ESR information to the network equipment, wherein the ESR information is used for indicating that the mobile terminal needs to fall back to the CS network.
The execution body of the embodiment of the application is a call control device or a mobile terminal, and optionally, the call control device can be built in the mobile terminal.
When the mobile terminal receives a CS service request issued by the network equipment in the LTE network, ESR information is sent to the network equipment to request to release an RRC link so as to normally fall back to the CS network for communication.
302. Searching whether a preset delay cell list contains a current service cell of the mobile terminal or not; wherein, if so, steps 303-304 are performed; if not, steps 305-308 or 305-307, 309 are performed.
Optionally, the mobile terminal obtains the ID of the current serving cell, searches whether the ID is recorded in a preset delay cell list according to the ID, if not, starts the timer by using a default timing value of the ESR timer, and if so, starts the timer by using a preset duration value of the ESR timer.
Illustratively, the ESR TIMER is t3417_ext_timer, and the default TIMER value may be 10s and the preset duration value may be 20s.
303. And acquiring a preset duration value as a timing value of the ESR timer of the mobile terminal and starting timing, wherein the preset duration value is larger than a default timing value of the ESR timer.
In step 303, a timing value of an ESR timer of the mobile terminal is obtained, including a default timing value and a preset duration value, and a use description is made of the default timing value and the preset duration value, when a current serving cell of the mobile terminal is in a preset delay cell list, the preset duration value is adopted as the timing value of the ESR timer to perform timing so as to detect whether the real time value releases the RRC link in the preset duration value, and when the current serving cell of the mobile terminal is not in the preset delay cell list, the default timing value is adopted as the timing value of the ESR timer to perform timing so as to detect whether the real time value releases the RRC link in the default timing value.
304. And when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value, detecting that the RRC link is released by the network equipment and falls back to the CS network for conversation.
The real-time timing value of the ESR timer is smaller than or equal to the preset time length value, namely the ESR timer is timed within the preset time length value, the timing is not overtime, and the RRC link is detected to be released by the network equipment and falls back to the CS network for conversation.
305. The default timing value of the ESR timer is obtained as the timing value of the ESR timer of the mobile terminal and begins to count.
306. And after the real-time timing value of the ESR timer meets a default timing value, if the release of the RRC link by the network equipment is not detected, recording the current service cell into a preset delay cell list.
The real-time timing value of the ESR timer meets a default timing value, which indicates that the ESR timer times out, and the RRC link is not released by the network device, so that the current service cell can be recorded in a preset delay cell list, and when the current service cell is registered later, the detection duration for detecting whether the RRC link is released can be prolonged, whether the RRC link can be normally released can be more effectively detected, and the call completing rate is improved.
307. And transmitting a TAU request to the network equipment through the mobile terminal to release the RRC link, and triggering a TAU timer to start timing, wherein the TAU request is used for requesting the network equipment to release the RRC link.
After steps 305-306, after the real-time timing value of the ESR timer meets the default timing value (overtime according to the default timing value), the mobile terminal records the current serving cell in the preset delay cell list, and performs LTE RRC release locally, and then sends a TAU request to the network device, and at the same time triggers the TAU timer to start timing. And the network equipment generally releases LTE RRC when receiving the TAU request sent by the mobile terminal, so that the RRC can be released quickly, and the mobile terminal and the network equipment can keep information synchronization.
Alternatively, the mobile terminal releases the RRC link locally and then sends a TAU request to the network device, re-establishes the RRC link, and starts a TAU timer for releasing the RRC link.
308. And when the real-time timing value of the TAU timer is smaller than or equal to the timing threshold value, detecting that the network equipment releases the RRC link and falls back to the CS network for conversation.
In step 308, the TAU timer is further used to count, and if the network device is detected to release the RRC link within the counted time of the TAU timer, the RRC link can be normally dropped back to the CS network for communication.
Illustratively, the real-time value may be 3s.
309. And after the real-time timing value of the TAU timer meets the timing threshold, if the network equipment is detected not to release the RRC link, determining that the call connection fails.
If the TAU timer is overtime, the RRC link is not released, and the connection failure of the call is determined, and the process is ended.
Illustratively, after the real-time timing value of the TAU TIMER exceeds 3s, the network device has not released the RRC link, and there may be a setup exception or other higher priority task in the network device that is executing, resulting in failure to release the RRC link within the timing time.
It can be seen that, through the above embodiment, by identifying and recording the cells that still cannot release the LTE RRC link after the timeout of the T3417_ext_timer into the preset delay cell list, when the cells are subsequently registered, the mobile terminal more effectively detects whether the LTE RRC link is released by extending the timing of the T3417_ext_timer, and after the timing of the delay of the T3417_ext_timer, the RRC link is not released yet, the mobile terminal performs a local LTE RRC release mechanism, and then requests the network device to perform quick release of the LTE RRC link, so that the network device can normally perform release of the LTE RRC link, thereby implementing information synchronization between the mobile terminal and the network device, and ensuring that the mobile terminal can normally fall back to the network such as 2G or 3G to perform a call, thereby improving call completing rate.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a call control device according to an embodiment of the present application; as shown in fig. 4, the call control apparatus may include:
a transceiver module 410, configured to, when receiving a circuit switched CS service request issued by a network device, send ESR information of the extended service request to the network device, where the ESR information is used to indicate that the mobile terminal needs to fall back to the CS network;
a searching module 420, configured to search whether a preset delay cell list includes a current serving cell of the mobile terminal;
a timing module 430, configured to obtain a preset duration value as a timing value of an ESR timer of the mobile terminal and start timing when the searching module 420 searches that the preset delay cell list includes a current serving cell of the mobile terminal, where the preset duration value is greater than a default timing value of the ESR timer;
and a fallback module 440, configured to detect that the radio resource control RRC link is released by the network device when the real-time timing value of the ESR timer is less than or equal to the preset duration value, and fallback to the CS network for communication.
Referring to fig. 5, fig. 5 is a flow chart of a call control device according to a second embodiment of the application; the call control apparatus shown in fig. 5 is optimized based on the call control apparatus shown in fig. 4, and the call control apparatus shown in fig. 5 further includes:
the timing module 430 is further configured to, when the searching module 420 searches that the preset delay cell list does not include the current serving cell of the mobile terminal, acquire a default timing value of the ESR timer as the timing value of the ESR timer of the mobile terminal and start timing;
and the recording module 510 is configured to record the current serving cell into a preset delay cell list if the RRC link is not detected to be released by the network device after the real-time timing value of the ESR timer satisfies the default timing value.
By means of the device, a delay cell list is preset, if the current service cell of the mobile terminal is contained in the preset delay cell list, a preset time length value longer than a default time length value is obtained to be used as the time length value of the ESR timer for timing, so that whether the network equipment can normally release the RRC link can be checked more accurately by prolonging the time length for detecting whether the network equipment releases the RRC link, call completing rate is improved, and user call experience is improved.
Further optionally, the transceiver module 410 is further configured to send, after the recording module 510 meets the default timing value after the real-time timing value of the ESR timer meets the default timing value, a tracking area update TAU request to the network device by the mobile terminal releasing the RRC link after the current serving cell is recorded in the preset delay cell list if the RRC link is not detected to be released by the network device, where the TAU request is used to request the network device to release the RRC link.
Further optionally, the above-mentioned timing module 430 is further configured to trigger the TAU timer to start timing while the transceiver module 410 sends a tracking area update TAU request to the network device;
the fallback module 440 is further configured to detect that the network device releases the RRC link and falls back to the CS network for a call when the real-time timing value of the TAU timer is less than or equal to the timing threshold.
Further optionally, the fallback module 440 is further configured to determine that the call connection fails if the network device is detected to not release the RRC link after the real-time timing value of the TAU timer satisfies the timing threshold.
By implementing the apparatus of fig. 5, by identifying and recording cells which still cannot release the LTE RRC link after the time-out of the t3417_ext_timer into a preset delay cell list, when the cells are subsequently registered, the mobile terminal more effectively detects whether the LTE RRC link is released by extending the time-out of the t3417_ext_timer, and after the time-out of the T3417_ext_timer, the RRC link is not released yet, the mobile terminal performs a local LTE RRC release mechanism, and then requests the network device to perform fast release of the LTE RRC link, so that the network device can normally perform release of the LTE RRC link, information synchronization between the mobile terminal and the network device is achieved, and the mobile terminal can be ensured to normally fall back to a network such as 2G or 3G to perform a call, thereby improving call completing rate.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application; the mobile terminal shown in fig. 6 may include:
a memory 601 in which executable program codes are stored;
a processor 602 coupled to the memory 601;
the processor 602 invokes executable program codes stored in the memory 601 to perform part or all of the steps of any one of the call control methods of fig. 2 to 3.
The embodiment of the application also discloses a computer readable storage medium storing a computer program, wherein the computer program causes a computer to execute a call control method disclosed in fig. 2 to 3.
Embodiments of the present application also disclose a computer program product which, when run on a computer, causes the computer to perform part or all of the steps of any of the methods disclosed in fig. 2-3.
The embodiment of the application also discloses an application release platform which is used for releasing a computer program product, wherein when the computer program product runs on a computer, the computer is caused to execute part or all of the steps of any one of the methods disclosed in fig. 2 to 3.
Those of ordinary skill in the art will appreciate that all or part of the steps of the various methods of the above embodiments may be implemented by a program that instructs associated hardware, the program may be stored in a computer readable storage medium including Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disk Memory, magnetic disk Memory, tape Memory, or any other medium that can be used for carrying or storing data that is readable by a computer.
The foregoing describes in detail a call control method, apparatus, mobile terminal and storage medium disclosed in the embodiments of the present application, and specific examples are applied to illustrate the principles and embodiments of the present application, where the foregoing examples are only used to help understand the method and core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims (11)

1. A call control method, comprising:
when receiving a Circuit Switching (CS) service request issued by network equipment, sending ESR information of an extended service request to the network equipment, wherein the ESR information is used for indicating that a mobile terminal needs to fall back to a CS network;
searching whether a preset delay cell list contains a current service cell of the mobile terminal or not;
when the ESR timer is included, acquiring a preset duration value as a timing value of the ESR timer of the mobile terminal and starting timing, wherein the preset duration value is larger than a default timing value of the ESR timer;
and detecting that a Radio Resource Control (RRC) link is released by the network equipment and falls back to the CS network for conversation when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value.
2. The method according to claim 1, wherein the method further comprises:
when the preset delay cell list does not contain the current service cell, acquiring a default timing value of the ESR timer as the timing value of the ESR timer of the mobile terminal and starting timing;
and after the real-time timing value of the ESR timer meets the default timing value, if the release of the RRC link by the network equipment is not detected, recording the current service cell into the preset delay cell list.
3. The method of claim 2, wherein after the real-time timing value of the ESR timer satisfies the default timing value, if the release of the RRC link by the network device is not detected, the current serving cell is recorded in the preset delay cell list, the method further comprises:
and transmitting a Tracking Area Updating (TAU) request to the network equipment by the mobile terminal to release the RRC link, wherein the TAU request is used for requesting the network equipment to release the RRC link.
4. A method according to claim 3, characterized in that the method further comprises:
triggering a TAU timer to start timing while sending a tracking area update TAU request to the network equipment;
and when the real-time timing value of the TAU timer is smaller than or equal to a timing threshold value, detecting that the network equipment releases the RRC link and falls back to a CS network for conversation.
5. The method according to claim 4, wherein the method further comprises:
and after the real-time timing value of the TAU timer meets the timing threshold, if the network equipment is detected not to release the RRC link, determining that the call connection fails.
6. A call control apparatus, comprising:
the receiving and transmitting module is used for transmitting ESR information of the extended service request to the network equipment when receiving a Circuit Switched (CS) service request issued by the network equipment, wherein the ESR information is used for indicating that the mobile terminal needs to fall back to a CS network;
the searching module is used for searching whether a preset delay cell list contains a current service cell of the mobile terminal or not;
the timing module is used for acquiring a preset duration value as a timing value of an ESR timer of the mobile terminal and starting timing when the searching module searches that the preset delay cell list contains the current service cell of the mobile terminal, wherein the preset duration value is larger than a default timing value of the ESR timer;
and the fallback module is used for detecting that the Radio Resource Control (RRC) link is released by the network equipment and falls back to the CS network for conversation when the real-time timing value of the ESR timer is smaller than or equal to the preset duration value.
7. The apparatus of claim 6, wherein the apparatus further comprises:
the timing module is further configured to, when the searching module finds that the preset delay cell list does not include the current serving cell of the mobile terminal, acquire a default timing value of the ESR timer as the timing value of the ESR timer of the mobile terminal and start timing;
and the recording module is used for recording the current service cell into the preset delay cell list if the release of the RRC link by the network equipment is not detected after the real-time timing value of the ESR timer meets the default timing value.
8. The apparatus according to claim 7, wherein:
the transceiver module is further configured to, after the real-time timing value of the ESR timer meets the default timing value, record, if the RRC link is not detected to be released by the network device, the current serving cell to the preset delay cell list, and then release, by using the mobile terminal, the RRC link, send a tracking area update TAU request to the network device, where the TAU request is used to request the network device to release the RRC link.
9. The apparatus according to claim 8, wherein:
the timing module is further configured to trigger a TAU timer to start timing while the transceiver module sends a tracking area update TAU request to the network device;
and the fallback module is further configured to, when the real-time timing value of the TAU timer is less than or equal to a timing threshold, detect that the network device releases the RRC link, and fallback to the CS network for communication.
10. A mobile terminal, comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform a call control method as claimed in any one of claims 1 to 5.
11. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method according to any one of claims 1-5.
CN202210554727.9A 2022-05-20 2022-05-20 Call control method and device, mobile terminal and storage medium Pending CN117135702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210554727.9A CN117135702A (en) 2022-05-20 2022-05-20 Call control method and device, mobile terminal and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210554727.9A CN117135702A (en) 2022-05-20 2022-05-20 Call control method and device, mobile terminal and storage medium

Publications (1)

Publication Number Publication Date
CN117135702A true CN117135702A (en) 2023-11-28

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