CN114928868B

CN114928868B - Communication method, device, terminal and network equipment

Info

Publication number: CN114928868B
Application number: CN202210767121.3A
Authority: CN
Inventors: 谢丁速
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-05-17
Anticipated expiration: 2042-06-30
Also published as: CN114928868A

Abstract

The application discloses a call method, a call device, a call terminal and network equipment, and belongs to the technical field of communication. The method comprises the following steps: under the condition that a terminal performs an evolved packet system Fallback (EPS) Fallback call, the terminal acquires a target scheduling period of a system message 2SIB2 of a current resident cell; the terminal determines a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period; the terminal sends the target timing duration to network equipment so that the network equipment starts the EPS Fallback timer according to the target timing duration; and the terminal reads the system message in the target timing time length and establishes a call with the network equipment under the condition of completing reading the system message.

Description

Communication method, device, terminal and network equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a communication method, a communication device, a communication terminal and a communication network device.

Background

Voice call services are the most common and operator-based services for end users. Currently, the voice schemes of the terminal mainly include a new air interface supported voice (Voice over New Radio, voNR) and an Evolved packet system Fallback (EPS Fallback). The EPS Fallback call scheme refers to that a terminal initiates or receives a voice call under a fifth generation (the 5 ^th Genereation, 5G) network, then drops back to a fourth generation (the 4 ^th Genereation, 4G) network by means of redirection or handover, and establishes a dedicated IP multimedia subsystem (IP Multimedia Subsystem, IMS) voice/video bearer through the 4G network to establish a call, and when the call is ended, the terminal immediately returns to the 5G network.

At present, a call proposal based on EPS Fallback often has the condition of calling or answering failure in the use process of the existing network. In the prior art, the terminal can quickly determine which domain to re-try the call to improve the call completing rate after the failure of the EPS Fallback by acquiring the state information of the EPS Fallback, but the re-dialing method after the failure does not fundamentally solve the failure of the call failing, but takes more resources and time to re-dial the call. Therefore, the existing scheme for improving the call completing rate of the voice call has poor effect and is easy to cause resource waste.

Disclosure of Invention

The embodiment of the application aims to provide a call method, a call device, a terminal and network equipment, which can solve the problems that the existing scheme for improving the call completing rate of voice call is poor in effect and easy to cause resource waste.

In a first aspect, an embodiment of the present application provides a call method, including:

under the condition that a terminal performs an evolved packet system Fallback (EPS) Fallback call, the terminal acquires a target scheduling period of a system message 2 (System Information Block, SIB 2) of a current resident cell;

The terminal determines a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period;

The terminal sends the target timing duration to network equipment so that the network equipment starts the EPS Fallback timer according to the target timing duration;

And the terminal reads the system message in the target timing time length and establishes a call with the network equipment under the condition of completing reading the system message.

In a second aspect, an embodiment of the present application provides another call method, including:

The method comprises the steps that under the condition that a terminal performs EPS Fallback call, network equipment receives target timing duration of an EPS Fallback timer sent by the terminal, wherein the target timing duration is determined by the terminal according to a target scheduling period of SIB2 of a current resident cell;

the network device starts the EPS Fallback timer, wherein the timing duration of the EPS Fallback timer is the target timing duration;

and under the condition that the terminal finishes reading the system message within the target timing duration, the network equipment establishes a call with the terminal.

In a third aspect, an embodiment of the present application provides a first call apparatus, including:

the first acquisition module is used for acquiring a target scheduling period of a system message 2SIB2 of a current resident cell under the condition that the terminal performs an evolved packet system Fallback call;

The first determining module is used for determining a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period;

A sending module, configured to send the target timing duration to a network device, so that the network device starts the EPS Fallback timer according to the target timing duration;

And the first call establishment module is used for reading the system message in the target timing time length and establishing a call with the network equipment under the condition of completing reading the system message.

In a fourth aspect, an embodiment of the present application provides a second communication device, including:

the receiving module is used for receiving target timing duration of an EPS Fallback timer sent by the terminal under the condition that the terminal performs EPS Fallback call, wherein the target timing duration is determined by the terminal according to a target scheduling period of SIB2 of a current resident cell;

The timing module is used for starting the EPS Fallback timer, wherein the timing duration of the EPS Fallback timer is the target timing duration;

and the second call establishment module is used for establishing a call with the terminal under the condition that the terminal finishes reading the system message within the target timing duration.

In a fifth aspect, an embodiment of the present application provides a terminal, including a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions implement the steps of the call method according to the first aspect when executed by the processor.

In a sixth aspect, an embodiment of the present application provides a network device, including a processor and a memory, where the memory stores a program or instructions executable on the processor, the program or instructions implementing the steps of the call method according to the second aspect when executed by the processor.

In a seventh aspect, an embodiment of the present application provides a readable storage medium, where a program or an instruction is stored, the program or the instruction implementing the steps of the call method according to the first aspect when executed by a processor; or steps implementing the method of talking as described in the second aspect.

In an eighth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the call method according to the first aspect; or implement the call method as described in the second aspect.

In a ninth aspect, embodiments of the present application provide a computer program product stored in a storage medium, the program product being executable by at least one processor to implement the method of speaking as described in the first aspect; or implement the call method as described in the second aspect.

In the embodiment of the application, under the condition that a terminal performs an evolved packet system Fallback (EPS) Fallback call, the terminal acquires a target scheduling period of a system message 2SIB2 of a current resident cell; the terminal determines a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period; the terminal sends the target timing duration to network equipment so that the network equipment starts the EPS Fallback timer according to the target timing duration; and the terminal reads the system message in the target timing time length and establishes a call with the network equipment under the condition of completing reading the system message. Therefore, the timing duration of the EPS Fallback timer is controlled according to the scheduling period of the SIB2 of the cell where the terminal currently resides, so that the terminal can be ensured to successfully read the SIB2 before the EPS Fallback timer is overtime when the terminal starts to fall back, the success rate of the voice call fall back is effectively improved, the call completing rate of the EPS Fallback call is further improved, and the resource waste caused by re-dialing attempt can be avoided.

Drawings

FIG. 1 is a flowchart of a call method according to an embodiment of the present application;

Fig. 2 is a flow chart of designing a cell scheduling period matrix according to an embodiment of the present application;

FIG. 3 is a second flowchart of a call method according to an embodiment of the present application;

FIG. 4 is a third flowchart of a call method according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first call device according to an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a second communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 9 is a schematic diagram of a hardware structure of a terminal according to an embodiment of the present application;

fig. 10 is a schematic hardware structure of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The following describes in detail the call method provided by the embodiment of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a flowchart of a call method according to an embodiment of the present application, as shown in fig. 1, the method includes the following steps:

step 101, under the condition that a terminal performs an evolved packet system Fallback (EPS) Fallback call, the terminal acquires a target scheduling period of a system message 2SIB2 of a current resident cell.

The EPS Fallback call scheme refers to that the terminal initiates or receives a voice call under the 5G network, then drops back to the 4G network by redirecting or switching, and establishes a dedicated IMS voice/video bearer through the 4G network to establish a call, and when the call is ended, the terminal immediately returns to the 5G network.

The terminal performs an EPS Fallback call, which may mean that the terminal initiates the EPS Fallback call as a caller, or that the terminal receives the EPS Fallback call as a callee.

In the embodiment of the application, the terminal can initiate a call on a 5G system and establish a service quality (Quality of Service, qoS) Flow related to the call; the network device such as the base station comprehensively considers whether to trigger the EPS FallBack according to the terminal capability, the authentication management function (Authentication Management Function, AMF) capability of the core network, the N26 interface deployment condition and the like, and refuses to establish the voice bearer of VoNR through a protocol data unit (Protocol Data Unit, PDU) Session modification (PDU Session Mod) command under the condition that the EPS FallBack is triggered; and the terminal initiates a process of falling back to the EPS Fallback in a switching or redirection mode and the like.

Under the condition of performing EPS Fallback call, the terminal can acquire the scheduling period of the SIB2 of the current resident cell to obtain a target scheduling period, specifically, the terminal can acquire the scheduling period (si-Periodicity) of the SIB2 of the current resident cell by reading the system information of the current resident cell, or the terminal can search the scheduling period of the SIB2 of the current resident cell from the pre-stored scheduling periods of the SIB2 of each resident cell.

Optionally, the step 101 includes:

And the terminal determines the target scheduling period of the SIB2 of the current resident cell according to the corresponding relation between the pre-established cell and the scheduling period of the SIB 2.

In one embodiment, the terminal may pre-establish a correspondence between the cell and the SIB2 scheduling period, so that the terminal may directly and quickly obtain the target scheduling period of the SIB2 of the current resident cell from the correspondence when performing the EPS Fallback call.

For example, when the terminal historically resides in different cells, the terminal may read the scheduling period of SIB2 of each cell, so as to establish and store a correspondence between each cell and the scheduling period of SIB 2.

When the terminal performs EPS Fallback call, the terminal can search the matching cell from the corresponding relation according to the cell where the terminal currently resides, acquire the scheduling period of the SIB2 corresponding to the matching cell, and determine the scheduling period as the target scheduling period of the SIB2 of the cell where the terminal currently resides.

In this way, through the implementation manner, the target scheduling period of the SIB2 of the current residence cell can be quickly obtained, so as to improve the EPS Fallback call efficiency.

Optionally, before determining the target scheduling period of SIB2 of the current resident cell according to the corresponding relationship between the pre-established cell and the scheduling period of SIB2, the method further includes:

The terminal respectively acquires the scheduling period of SIB2 of each resident cell of the terminal;

And the terminal establishes the corresponding relation according to the identification information of each resident cell and the scheduling period of the SIB2 of each resident cell.

In one embodiment, the terminal may acquire the SIB2 scheduling period of a cell when each cell is camped, for example, the SIB2 scheduling period of the cell may be read from a network device covering the cell, or the cell may be first matched with the cell for which the SIB2 scheduling period has been acquired, and the SIB2 scheduling period of the matched cell may be determined as the SIB2 scheduling period of the cell.

The terminal can establish a corresponding relation between the cell and the scheduling period of the SIB2 according to the acquired scheduling period of the SIB2 of each resident cell, for example, the identification information of the cell and the scheduling period of the SIB2 are correspondingly stored.

In this way, by acquiring the scheduling period of the SIB2 of each resident cell and establishing the corresponding relation between the cell and the scheduling period of the SIB2, the terminal can quickly acquire the target scheduling period of the SIB2 of the current resident cell when carrying out EPS Fallback call, thereby improving the EPS Fallback call efficiency.

The terminal acquires the scheduling period of SIB2 of a first cell from the network equipment under the condition that the terminal resides in the first cell and a scheduling periodic table does not exist; establishing the scheduling periodic table, wherein the scheduling periodic table correspondingly stores the physical cell identifier (PHYSICAL CELL IDENTIFIER, PCI), the system information area ID (System Information Area ID, SID), a Value Tag (VT) and a scheduling period of SIB2 of the first cell;

the terminal searches whether the matched SID and VT exist in the scheduling periodic table according to the SID and VT of the second cell when the terminal resides in the second cell and the scheduling periodic table exists;

If the SID and the VT which are matched exist in the scheduling periodic table, the terminal determines that the scheduling period of the SIB2 of the second cell is the same as the scheduling period of the SIB2 of a third cell, wherein the third cell is a cell in which the SID and the VT in the scheduling periodic table are matched with the SID and the VT of the second cell; if the matched SID and VT do not exist in the scheduling periodic table, the terminal acquires the scheduling period of SIB2 of the second cell from the network equipment;

The terminal adds the PCI, SID, VT of the second cell and the scheduling period of SIB2 correspondingly in the scheduling period table.

In one embodiment, the terminal may acquire and update the scheduling period of SIB2 of each cell during the process of camping on each different cell, so as to establish and continuously update a scheduling period table for storing cell information and the scheduling period of the corresponding SIB2, and when the terminal performs EPS Fallback call, quickly acquire the scheduling period of SIB2 of the current camping cell according to the scheduling period table. The scheduling periodic table may be a scheduling periodic matrix, and the row elements and the column elements are respectively the cell identification information and the scheduling period of SIB 2.

The flow chart of the terminal for establishing the scheduling periodic table of each cell may be as shown in fig. 2, and the specific steps are as follows:

1) In the case that the terminal has not established the scheduling periodic table, that is, the information in the scheduling periodic table is null, the terminal may read the scheduling period si-Periodicity of SIB2 of a first cell from the network device when camping on a certain cell, such as the first cell, specifically, a certain long term evolution (Long Term Evolution, LTE) cell, establish the scheduling periodic table or the scheduling period matrix (for convenience of description, the scheduling period matrix is used later to represent), and respectively form the scheduling period si-Periodicity of SIB2 of the first cell and the cell physical identifier PCI into a row and a column of the scheduling period matrix, specifically, a column value of the scheduling period matrix may include a physical cell identifier, that is, a PCI identifier, a system information area ID, that is, a SID and a value identifier, that is, VT, and a row value of the scheduling period matrix is a corresponding scheduling period si-Periodicity. Assuming that the PCI of the first cell is 001, its unique corresponding SID is 001, vt is 001, and si-Periodicity of SIB2 read by the terminal to pci:001 is 5.12s, an initial scheduling period matrix F as shown in table 1 below can be established.

TABLE 1 initial scheduling period matrix F

	PCI:001(SID:001,VT:001)
		si-Periodicity	5.12s

2) In the case that the terminal has established the scheduling periodic table, that is, the information in the scheduling periodic table is not null, the terminal may first search for whether a cell having the same SID value and VT value as the second cell exists from the scheduling periodic matrix when camping on a certain cell, such as the second cell. Assume that the terminal resides in cells PCI:002 and PCI:003, respectively, where PCI:002 has a SID of 001, VT is 001, PCI:003 has a SID of 002, and VT is 002.

3) If the second cell which is currently resident is successfully matched in the scheduling period matrix, if the second cell is successfully matched with the third cell, the second cell and the third cell can be determined to be regional cells, so that the scheduling period of the SIB2 of the second cell is not required to be read, the scheduling period of the SIB2 of the second cell is directly determined to be the same as the scheduling period of the SIB2 of the third cell which is successfully matched, the scheduling period matrix is updated, namely the PCI, SID value and VT value of the second cell are used as column values, and the scheduling period of the SIB2 of the third cell is used as row values and is added into the scheduling period matrix. Assuming that PCI:002 can be successfully matched in the initial scheduling period matrix F, an updated scheduling period matrix F.1 can be obtained as shown in Table 2 below.

Table 2 post update scheduling period matrix F.1

	PCI:001(SID:001,VT:001)	PCI:002(SID:001,VT:001)
			si-Periodicity	5.12s	5.12s

4) If the matching of the currently resident second cell in the scheduling period matrix fails, it may be determined that the second cell is not a regional cell with the cell in the scheduling period matrix, so that the scheduling period of SIB2 of the second cell needs to be further read from the network device, and the scheduling period matrix is updated according to the read scheduling period of SIB2 of the second cell, that is, the PCI, SID value and VT value of the second cell are used as column values, and the scheduling period of SIB2 of the second cell is used as a row value and added into the scheduling period matrix. Assuming that PCI:003 fails to match in the initial scheduling period matrix F, the SII-Periodicity reading its SIB2 is 6.4s, resulting in an updated scheduling period matrix F.2 as shown in Table 3 below.

Table 3 post update scheduling period matrix F.2

	PCI:001(SID:001,VT:001)	PCI:003(SID:002,VT:002)
			si-Periodicity	5.12s	6.4s

Every time the terminal resides in a cell, the scheduling period matrix can be updated continuously according to the steps 2) to 4).

In this way, through the embodiment, the terminal can continuously update the scheduling periodic table for storing the cell information and the scheduling period of the corresponding SIB2 by matching the SID and VT of the cell in the process of residing in different cells, so that the terminal can quickly search the scheduling period of the SIB2 of the current residing cell from the scheduling periodic table by using the PCI of the current residing cell when performing EPS Fallback call, thereby achieving the purposes of improving the search speed and reducing the search cost.

Step 102, the terminal determines a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period.

In the embodiment of the application, the timing duration of the EPS Fallback Timer (Timer) can be reasonably set according to the scheduling period of the SIB2 of the current resident cell so as to ensure that the network equipment can complete the configuration and the issuing of the system message in the timing duration, thereby the terminal can complete the reading of the system message in the timing duration and avoid the failure of Fallback caused by unsuccessful reading of the system message before EPS Fallback Timer overtime.

Specifically, the terminal may determine, according to the obtained target scheduling period of SIB2 of the current residence cell, that the target timing duration of the EPS Fallback timer should be greater than or equal to the target scheduling period, so as to ensure that the terminal can successfully read the system message before the EPS Fallback timer times out, including a master information block (Master Information Block, MIB) and SIB2, and so on, and further ensure that the terminal can successfully fall back, establish an EPS Fallback call with a network device, and avoid that SIB2 scheduling is not completed before the EPS Fallback timer times out due to too short timing duration set of the EPS Fallback timer, and the terminal fails to successfully read SIB2, thereby causing the terminal to fall back failure.

Optionally, the step 102 includes:

And the terminal determines the default timing duration and the larger value in the target scheduling period as the target timing duration of the EPS Fallback timer.

In one embodiment, the terminal may determine the target timing duration of the EPS Fallback timer by combining the timing duration of the default EPS Fallback timer, that is, the default timing duration, and the target scheduling period. Specifically, a target timing duration of the EPS Fallback timer may be set to be a maximum value of the default timing duration and the target scheduling period.

For example, if the timing value of the default EPS Fallback timer is set to T and the obtained target scheduling period of the cell where the terminal currently resides is si-Periodicity ', the timing value of the EPS Fallback timer may be updated by the formula T ' =max (T, si-Periodicity ').

In this way, by setting the timing duration of the EPS Fallback timer to a default timing duration and a larger value in the target scheduling period, it is not only ensured that the terminal completes system reading before the EPS Fallback timer times out, but also ensured that other behaviors of the terminal are successfully completed, and further ensured that the EPS Fallback call is successfully established.

Step 103, the terminal sends the target timing duration to the network equipment, so that the network equipment starts the EPS Fallback timer according to the target timing duration.

In this step, the terminal may send the determined target timing duration to a network device, such as a base station, where the network device sets a timing duration of an EPS Fallback timer to the target timing duration according to the received target timing duration, and starts the EPS Fallback timer to start timing, and specifically, an IMS module at the network device side will start the EPS Fallback timer according to the target timing duration. The function of the EPS Fallback timer is to time the process of performing EPS Fallback on the terminal and the network device, the terminal needs to complete EPS Fallback within the time duration of the EPS Fallback timer, if the EPS Fallback is not successful after timeout, the terminal will reset, and the terminal will not fail in EPS Fallback for a long time.

Step 104, the terminal reads the system information in the target timing time length, and establishes a call with the network equipment under the condition that the system information is read.

After the network device starts the EPS Fallback timer, the terminal may read a system message broadcasted by the network device within a timing duration of the EPS Fallback timer, where the network device may broadcast the system message according to a scheduling period of SIB2 of a coverage cell, i.e., a cell where the terminal currently resides. And because the timing duration of the EPS Fallback timer is longer than the scheduling period of the SIB2 of the cell where the terminal currently resides, the terminal can be ensured to successfully complete the reading and the successful decoding of the system information such as the MIB and the SIB 2. After the terminal finishes reading the system information, the terminal can further finish a Tracking Area Update (TAU) process and establish a voice special bearer, so that the EPS Fallback call is successfully established.

The whole flow of the call service for adaptively controlling the EPS Fallback timer described in the embodiment of the present application may be as shown in fig. 3.

The scheduling period of SIB2 configuration in the existing network is variable, such as 1.6s, 5.12s, and 6.4s, which causes the terminal to be likely to not successfully read SIB2 before the EPS FallBack timer expires, resulting in FallBack failure. In view of the problem, the application firstly constructs a cell scheduling period matrix, then utilizes the scheduling period matrix to carry out matching search on the current FallBack cell when the terminal carries out EPS FallBack call, and further updates the timing duration of the EPS FallBack timer to ensure that the terminal successfully reads SIB2 when FallBack occurs.

In the call method in the embodiment of the application, under the condition that the terminal performs the evolved packet system Fallback EPS Fallback call, the terminal acquires the target scheduling period of the system message 2SIB2 of the current resident cell; the terminal determines a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period; the terminal sends the target timing duration to network equipment so that the network equipment starts the EPS Fallback timer according to the target timing duration; and the terminal reads the system message in the target timing time length and establishes a call with the network equipment under the condition of completing reading the system message. Therefore, the timing duration of the EPS Fallback timer is controlled according to the scheduling period of the SIB2 of the cell where the terminal currently resides, so that the terminal can be ensured to successfully read the SIB2 before the EPS Fallback timer is overtime when the terminal starts to fall back, the success rate of the voice call fall back is effectively improved, the call completing rate of the EPS Fallback call is further improved, and the resource waste caused by re-dialing attempt can be avoided.

Referring to fig. 4, fig. 4 is a flowchart of another call method according to an embodiment of the present application, as shown in fig. 4, the method includes the following steps:

Step 401, receiving, by a network device, a target timing duration of an EPS Fallback timer sent by a terminal under the condition that the terminal performs EPS Fallback call, where the target timing duration is determined by the terminal according to a target scheduling period of SIB2 of a current resident cell.

Step 402, the network device starts the EPS Fallback timer, where the timing duration of the EPS Fallback timer is the target timing duration.

Step 403, under the condition that the terminal finishes reading the system message within the target timing duration, the network equipment establishes a call with the terminal.

It should be noted that, as an implementation manner of the network device side corresponding to the embodiment shown in fig. 1, a specific implementation manner of the embodiment may refer to a related description in the embodiment shown in fig. 1, and in order to avoid repetition, a detailed description is omitted here.

In the call method in the embodiment of the application, the network equipment receives the target timing duration of the EPS Fallback timer sent by the terminal under the condition that the terminal performs EPS Fallback call, wherein the target timing duration is determined by the terminal according to the target scheduling period of SIB2 of the current resident cell; the network device starts the EPS Fallback timer, wherein the timing duration of the EPS Fallback timer is the target timing duration; and under the condition that the terminal finishes reading the system message within the target timing duration, the network equipment establishes a call with the terminal. Therefore, the timing duration of the EPS Fallback timer is controlled according to the scheduling period of the SIB2 of the cell where the terminal currently resides, so that the terminal can be ensured to successfully read the SIB2 before the EPS Fallback timer is overtime when the terminal starts to fall back, the success rate of the voice call fall back is effectively improved, the call completing rate of the EPS Fallback call is further improved, and the resource waste caused by re-dialing attempt can be avoided.

In the call method provided in the embodiment of fig. 1 of the present application, the executing body may be the first call device. In the embodiment of the present application, a call method performed by a first call device is taken as an example, and the first call device provided by the embodiment of the present application is described.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a first call device according to an embodiment of the present application, and as shown in fig. 5, a first call device 500 includes:

a first obtaining module 501, configured to obtain a target scheduling period of a system message 2SIB2 of a current residence cell when the terminal performs an evolved packet system Fallback call;

A first determining module 502, configured to determine a target timing duration of an EPS Fallback timer according to the target scheduling period, where the target timing duration is greater than or equal to the target scheduling period;

A sending module 503, configured to send the target timing duration to a network device, so that the network device starts the EPS Fallback timer according to the target timing duration;

A first call establishment module 504, configured to perform system message reading within the target timing duration, and establish a call with the network device when the system message reading is completed.

Optionally, the first obtaining module 501 is configured to determine, according to a pre-established correspondence between a cell and a SIB2 scheduling period, a target scheduling period of SIB2 of a currently camping cell.

Optionally, the first telephony device 500 further includes:

a second obtaining module, configured to obtain a scheduling period of SIB2 of each resident cell of the terminal, respectively;

the first establishing module is used for establishing the corresponding relation according to the identification information of each resident cell and the scheduling period of the SIB2 of each resident cell.

Optionally, the first telephony device 500 further includes:

a third obtaining module, configured to obtain, when the terminal resides in a first cell and there is no scheduling periodic table, a scheduling period of SIB2 of the first cell from the network device;

A second establishing module, configured to establish the scheduling periodic table, where a physical cell identifier PCI, a system information area ID SID, a value flag VT, and a scheduling period of SIB2 of the first cell are correspondingly stored in the scheduling periodic table;

The searching module is used for searching whether the matched SID and VT exist in the scheduling periodic table according to the SID and VT of the second cell when the terminal resides in the second cell and the scheduling periodic table exists;

A second determining module, configured to determine that, if there is a matched SID and VT in the scheduling periodic table, a scheduling period of SIB2 of the second cell is the same as a scheduling period of SIB2 of a third cell, where the third cell is a cell in which the SID and VT in the scheduling periodic table are matched with the SID and VT of the second cell;

a fourth obtaining module, configured to obtain, if there is no matched SID and VT in the scheduling periodic table, a scheduling period of SIB2 of the second cell from the network device;

and the adding module is used for correspondingly adding the PCI, SID, VT of the second cell and the scheduling period of the SIB2 in the scheduling period table.

Optionally, the first determining module 502 is configured to determine the default timing duration and the larger value in the target scheduling period as the target timing duration of the EPS Fallback timer.

The first call device 500 in the embodiment of the present application obtains a target scheduling period of a system message 2SIB2 of a current residence cell under the condition that a terminal performs an evolved packet system Fallback call; determining a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period; the target timing duration is sent to network equipment, so that the network equipment starts the EPS Fallback timer according to the target timing duration; and reading the system message in the target timing time length, and establishing a call with the network equipment under the condition that the reading of the system message is completed. Therefore, the timing duration of the EPS Fallback timer is controlled according to the scheduling period of the SIB2 of the cell where the terminal currently resides, so that the terminal can be ensured to successfully read the SIB2 before the EPS Fallback timer is overtime when the terminal starts to fall back, the success rate of the voice call fall back is effectively improved, the call completing rate of the EPS Fallback call is further improved, and the resource waste caused by re-dialing attempt can be avoided.

The first communication device in the embodiment of the application can be a terminal, and also can be a component in the terminal, such as an integrated circuit or a chip. The terminal may be a Mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a Mobile internet device (Mobile INTERNET DEVICE, MID), an augmented Reality (Augmented Reality, AR)/Virtual Reality (VR) device, a robot, a wearable device, an Ultra-Mobile Personal Computer, a UMPC, a netbook or a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), or may be a Personal computer (Personal Computer, PC), a Television (Television, TV), a teller machine, a self-service machine, or the like, which is not limited in particular embodiments of the present application.

The first communication device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, and the embodiment of the present application is not limited specifically.

The first communication device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 1, and in order to avoid repetition, details are not repeated here.

In the call method provided in the embodiment shown in fig. 4 of the present application, the executing body may be a second call device. In the embodiment of the present application, a method for executing a call by a second call device is taken as an example, and the second call device provided in the embodiment of the present application is described.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a second communication device according to an embodiment of the present application, and as shown in fig. 6, a second communication device 600 includes:

a receiving module 601, configured to receive a target timing duration of an EPS Fallback timer sent by a terminal under a situation that the terminal performs EPS Fallback call, where the target timing duration is determined by the terminal according to a target scheduling period of SIB2 of a current residence cell;

a timing module 602, configured to start the EPS Fallback timer, where a timing duration of the EPS Fallback timer is the target timing duration;

A second session establishment module 603, configured to establish a session with the terminal when the terminal finishes reading the system message within the target timing duration.

In the second communication device 600 in the embodiment of the present application, under the condition that a terminal performs an EPS Fallback call, a target timing duration of an EPS Fallback timer sent by the terminal is received, where the target timing duration is determined by the terminal according to a target scheduling period of SIB2 of a current residence cell; starting the EPS Fallback timer, wherein the timing duration of the EPS Fallback timer is the target timing duration; and under the condition that the terminal finishes reading the system message within the target timing duration, establishing a call with the terminal. Therefore, the timing duration of the EPS Fallback timer is controlled according to the scheduling period of the SIB2 of the cell where the terminal currently resides, so that the terminal can be ensured to successfully read the SIB2 before the EPS Fallback timer is overtime when the terminal starts to fall back, the success rate of the voice call fall back is effectively improved, the call completing rate of the EPS Fallback call is further improved, and the resource waste caused by re-dialing attempt can be avoided.

The second communication device in the embodiment of the present application may be a network device, or may be a component in a network device, for example, an integrated circuit or a chip. The network device may be a base station or a core network, wherein the base station may be referred to as a node B, an evolved node B, an access Point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary as long as the same technical effect is achieved, and the specific type of the base station is not limited in the embodiments of the present application.

The second communication device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 4, and in order to avoid repetition, a description is omitted here.

Optionally, as shown in fig. 7, the embodiment of the present application further provides a terminal 700, including a processor 701 and a memory 702, where the memory 702 stores a program or an instruction that can be executed on the processor 701, and the program or the instruction when executed by the processor 701 implements each step of the embodiment of the call method shown in fig. 1, and can achieve the same technical effect, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 8, the embodiment of the present application further provides a network device 800, including a processor 801 and a memory 802, where the memory 802 stores a program or an instruction that can be executed on the processor 801, and the program or the instruction when executed by the processor 801 implements each step of the embodiment of the call method shown in fig. 4, and the steps achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Fig. 9 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 900 includes, but is not limited to: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

Those skilled in the art will appreciate that the terminal 900 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 910 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

The processor 910 is configured to obtain a target scheduling period of a system message 2SIB2 of a current camping cell when initiating an evolved packet system Fallback EPS Fallback call;

Determining a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period;

the radio frequency unit 901 is configured to send the target timing duration to a network device, so that the network device starts the EPS Fallback timer according to the target timing duration;

a processor 910 further configured to perform a system message reading during the target timing duration;

The radio frequency unit 901 is further configured to establish a call with the network device when reading the system message is completed.

Optionally, the processor 910 is further configured to determine, according to a pre-established correspondence between the cell and the SIB2 scheduling period, a target scheduling period of SIB2 of the currently camping cell.

Optionally, the processor 910 is further configured to acquire a scheduling period of SIB2 of each camping cell of the terminal;

and establishing the corresponding relation according to the identification information of each resident cell and the scheduling period of the SIB2 of each resident cell.

Optionally, the processor 910 is further configured to obtain, when the terminal camps on a first cell and the scheduling period table does not exist, a scheduling period of SIB2 of the first cell from the network device; establishing the scheduling periodic table, wherein the scheduling period table correspondingly stores the physical cell identifier PCI, the system information area ID SID, the value mark VT and the SIB2 of the first cell;

searching whether the matched SID and VT exist in the scheduling periodic table according to the SID and VT of the second cell when the terminal resides in the second cell and the scheduling periodic table exists;

if the SID and the VT which are matched exist in the scheduling periodic table, determining that the scheduling period of the SIB2 of the second cell is the same as the scheduling period of the SIB2 of a third cell, wherein the third cell is a cell in which the SID and the VT in the scheduling periodic table are matched with the SID and the VT of the second cell; if the matched SID and VT do not exist in the scheduling periodic table, acquiring the scheduling period of SIB2 of the second cell from the network equipment;

and correspondingly adding the PCI, SID, VT of the second cell and the scheduling period of the SIB2 in the scheduling period table.

Optionally, the processor 910 is further configured to determine a default timing duration and a larger value in the target scheduling period as a target timing duration of the EPS Fallback timer.

The terminal 900 in the embodiment of the application obtains the target scheduling period of the system message 2SIB2 of the current resident cell under the condition of initiating the evolved packet system Fallback EPS Fallback call; determining a target timing duration of an EPS Fallback timer according to the target scheduling period, wherein the target timing duration is greater than or equal to the target scheduling period; the target timing duration is sent to network equipment, so that the network equipment starts the EPS Fallback timer according to the target timing duration; and reading the system message in the target timing time length, and establishing a call with the network equipment under the condition that the reading of the system message is completed. Therefore, the timing duration of the EPS Fallback timer is controlled according to the scheduling period of the SIB2 of the cell where the terminal currently resides, so that the terminal can be ensured to successfully read the SIB2 before the EPS Fallback timer is overtime when the terminal starts to fall back, the success rate of the voice call fall back is effectively improved, the call completing rate of the EPS Fallback call is further improved, and the resource waste caused by re-dialing attempt can be avoided.

It should be appreciated that in embodiments of the present application, the input unit 904 may include a graphics processor (Graphics Processing Unit, GPU) 9041 and a microphone 9042, with the graphics processor 9041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 909 may include a volatile memory or a nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memories. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDRSDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and Direct random access memory (DRRAM). Memory 909 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.

Processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 910.

The embodiment of the application also provides network equipment. As shown in fig. 10, the network device 1000 includes: an antenna 1001, a radio frequency device 1002, and a baseband device 1003. The antenna 1001 is connected to a radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information via the antenna 1001, and transmits the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes information to be transmitted, and transmits the processed information to the radio frequency device 1002, and the radio frequency device 1002 processes the received information and transmits the processed information through the antenna 1001.

The above-described band processing means may be located in a baseband apparatus 1003, and the method performed by the network device in the above embodiment may be implemented in the baseband apparatus 1003, where the baseband apparatus 1003 includes a processor 1004 and a memory 1005.

The baseband apparatus 1003 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 10, where one chip, for example, a processor 1004, is connected to the memory 1005 to call a program in the memory 1005 to perform the network device operation shown in the above method embodiment.

The baseband apparatus 1003 may also include a network interface 1006 for interacting with the radio frequency apparatus 1002, such as a common public radio interface (Common Public Radio Interface, CPRI).

Specifically, the network device of the embodiment of the present application further includes: instructions or programs stored in the memory 1005 and executable on the processor 1004, the processor 1004 invokes the instructions or programs in the memory 1005 to perform the method performed by the modules shown in fig. 6, and achieve the same technical effects, so repetition is avoided and will not be described herein.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the processes of the foregoing embodiments of the call method shown in fig. 1 or fig. 4 are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or instructions, so as to implement each process of the foregoing embodiments of the communication method shown in fig. 1 or fig. 4, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.

An embodiment of the present application provides a computer program product, which is stored in a storage medium, and the program product is executed by at least one processor to implement each process of the foregoing embodiments of the communication method shown in fig. 1 or fig. 4, and achieve the same technical effects, so that repetition is avoided, and details are not repeated herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method of communicating, comprising:

Under the condition that a terminal performs an evolved packet system Fallback (EPS) Fallback call, the terminal acquires a target scheduling period of a system message 2SIB2 of a current resident cell;

2. The method according to claim 1, wherein the terminal obtains a target scheduling period of system message 2SIB2 of a currently camping cell, comprising:

3. The method of claim 2, wherein the terminal is further configured to, prior to determining the target scheduling period of SIB2 of the currently camping cell based on a pre-established correspondence between cells and scheduling periods of SIB2, the method further comprising:

4. The method of claim 2, wherein the terminal is further configured to, prior to determining the target scheduling period of SIB2 of the currently camping cell based on a pre-established correspondence between cells and scheduling periods of SIB2, the method further comprising:

The terminal acquires the scheduling period of SIB2 of a first cell from the network equipment under the condition that the terminal resides in the first cell and a scheduling periodic table does not exist; establishing the scheduling periodic table, wherein the scheduling period table correspondingly stores the physical cell identifier PCI, the system information area ID SID, the value mark VT and the SIB2 of the first cell;

5. The method of claim 1, wherein the determining, by the terminal, the target timing duration of the EPS Fallback timer according to the target scheduling period comprises:

6. A method of communicating, comprising:

7. A first telephony device, comprising:

8. The first telephony device of claim 7, wherein the first acquisition module is configured to determine a target scheduling period for SIB2 for a currently camping cell based on a pre-established correspondence between cells and scheduling periods for SIB 2.

9. The first telephony device of claim 8, further comprising:

10. The first telephony device of claim 8, further comprising:

11. The first telephony device of claim 7, wherein the first determination module is configured to determine a default timing length and a greater value in the target scheduling period as a target timing length for an EPS Fallback timer.

12. A second communication device, comprising:

13. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the talk method according to any one of claims 1 to 5.

14. A network device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the call method of claim 6.

15. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implement the steps of the call method according to any one of claims 1 to 5; or to implement the method of telephony according to claim 6.