WO2020135869A1

WO2020135869A1 - Card-less emergency communication method, terminal, and computer readable storage medium

Info

Publication number: WO2020135869A1
Application number: PCT/CN2019/129926
Authority: WO
Inventors: 吕渭萍
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-12-28
Filing date: 2019-12-30
Publication date: 2020-07-02
Also published as: CN111385783A

Abstract

Disclosed according to embodiments of the present disclosure are a card-less emergency communication method, a terminal, and a readable storage medium, the method comprising: when a terminal is in a card-less state and is started up, acquiring parameter information of at least one cell; receiving at least one piece of system information of the at least one cell; according to the at least one piece of system information, determining candidate cells that support card-less emergency communication; on the basis of the parameter information of the at least one cell, selecting a target cell having the best communication capabilities from among the candidate cells; and performing card-less emergency communication in the target cell.

Description

Card-free emergency communication method, terminal and computer-readable storage medium

Technical field

This disclosure relates to, but is not limited to, the field of communication technology.

Background technique

The emergency call function is an important function that all mobile phone products are required to support. It is used to dial various emergency help desks, such as fire alarm, bandit police, and medical emergency, in case of emergency or crisis to obtain emergency assistance.

At present, mobile terminals such as mobile phones generally support fourth-generation mobile communication technology (Fourth Generation, 4G)/three-generation mobile communication technology (Third Generation, 3G)/second-generation mobile communication technology (Second Generation, 2G) multiple network standards and address-based Multimedia subsystem (IP) Multimedia Subsystem (IMS) voice services, when there is no card emergency communication, prefer to make emergency calls based on the IMS network, when the IMS network does not support cardless emergency communication, select other standard cells to initiate emergency calls, so It is easy to cause a long call-through time and the call-through rate may be reduced by the influence of complex signaling.

In addition, the card-free emergency communication function in the International Organization for Standardization (3rd Generation Partnership Project, 3GPP) protocol allows the operator network to not support this function. If the mobile phone is not plugged in and turned on, and the cell stationed at this time does not support the emergency call function, When making an emergency call, the phone interface will briefly display "dial-up", but it will automatically hang up quickly and display "end of call", which will result in failure to connect to the emergency service desk and reduce the success rate of the call.

Summary of the invention

According to an aspect of the present disclosure, there is provided a card-free emergency communication method, the method includes: when a terminal is in a card-free state and starts up, acquiring parameter information of at least one cell; receiving at least one of the at least one cell System information; based on the at least one system information, determine a candidate cell that supports card-less emergency communication; based on the parameter information of the at least one cell, select a target cell with the best communication capability from the candidate cells; The card-free emergency communication is performed in the target cell.

According to another aspect of the present disclosure, a terminal is provided, the terminal at least includes a processor, a memory, a communication interface, and a communication bus, wherein the communication bus is used to implement connection communication between the processor and the memory; The communication interface is used to communicate with a cell; the processor is used to execute a card-free emergency communication program stored in a memory to implement a card-free emergency communication method according to the present disclosure.

According to another aspect of the present disclosure, there is provided a computer-readable storage medium storing a program for emergency communication without card, and when the program for emergency communication without card is executed by a processor, the processing The device implements the method of card-free emergency communication according to the present disclosure.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present disclosure;

2 is a schematic diagram of an implementation process of a card-free emergency communication method according to an embodiment of the present disclosure;

3 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure;

4 is a schematic diagram of an implementation process of a card-free emergency communication method according to an embodiment of the present disclosure;

5 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure;

6 is a schematic diagram of an implementation process of a card-free emergency communication method according to an embodiment of the present disclosure;

7 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure;

8 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure;

9 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure;

10 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure;

11 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure; and

12 is a schematic diagram of a composition structure of a terminal according to an embodiment of the present disclosure.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the specific technical solutions of the invention will be described in further detail in conjunction with the drawings in the embodiments of the present disclosure. The following embodiments are used to illustrate the present disclosure, but not to limit the scope of the present disclosure.

For the emergency call function, according to the requirements of the 3GPP protocol, emergency numbers include: 112, 911, 999, 000, 110, 118, 119, and 08. The types of emergency call services include: fire alarm, bandit police, mountain rescue, first aid and coastal rescue. The emergency numbers that can be recognized by the terminal are divided into three categories: one is the emergency number stored in the user identification card, the global user identification card, and the multimedia service identification card; the second is the emergency number stored in the terminal; the third is the network issued Emergency number. When dialing an emergency number, the terminal may carry the type of emergency call service to which the number belongs to identify the emergency call center to be accessed.

The network selection sequence defined by the 3GPP protocol is: the terminal must be capable of selecting the service domain for the emergency call function. If an emergency call attempt fails, the terminal needs to automatically select another service domain to complete the emergency call. If the terminal recognizes that the current network does not support IMS emergency calls, it needs to select the Packet Switch (CS) field to complete. If the current network does not support IMS emergency calls, as long as the CS domain supports emergency calls, the terminal makes a Circuit Domain Switched (Fallback, CSFB) emergency call; if the current network does not support CSFB, the terminal needs to automatically select other emergency calls that can be completed in the CS domain Calling system.

For card-free emergency communication, since the network registration cannot be performed and only the network can be stationed, card-free terminals cannot make emergency calls with CSFB function. Long-term evolution (Long Term Evolution, LTE) and global mobile communication system (Global System Mobile (Communication, GSM), Enhanced Data Rate Global Mobile Communication System (Enhanced Data Rate for GSM Evolution, EDGE) radio access network and Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, UTRAN) and other networks carry out. Since the card-free emergency communication function is optional in the 3GPP protocol, allowing the operator's network to not support this function. Therefore, if the terminal is stationed in a network that does not support card-less emergency communication, after dialing the emergency number, the interface will It will soon return to the end of the call, and ordinary users cannot recognize and cannot quickly control and choose to camp the terminal on a network that supports emergency calls. Therefore, in an emergency, there may be problems of long call time and low call rate.

In order to solve the above technical problems, the embodiments of the present disclosure provide a card-free emergency communication method, a terminal, and a computer-readable storage medium to improve the call-through rate of card-free emergency communication.

FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present disclosure. As shown in FIG. 1, the network architecture includes a terminal and network 1, network 2 to network N. The terminal is a mobile communication device that supports emergency communication without a card. It can be stationed in a mobile network cell with a signal to initiate emergency communication without a card. Network 1, network 2 to network N are signaled mobile network cells. According to an embodiment of the present disclosure, the signaled mobile network cell may be multiple mobile network cells of the same or different network standards.

When the terminal is stationed in a network that cannot be registered and the RF module is working normally, it receives the signals from all the base stations of various network standards nearby, measures the received signal strength and quality of each wireless cell, obtains the parameter information of the cell, and then analyzes the above For parameter information, obtain information about the signal return status of the cell and the support capability for card-free emergency communication in the communication channels of different cells. Based on the information fed back by the cell, the terminal selects the optimal cell to make the network emergency call.

The technical solutions in the embodiments according to the present disclosure will be described clearly and completely in conjunction with the drawings in the embodiments according to the present disclosure.

An embodiment of the present disclosure provides a cardless emergency communication method. FIG. 2 is a schematic diagram of an implementation process of a cardless emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 2, in an embodiment according to the present disclosure, a method for implementing card-free emergency communication may include steps 201 to 205.

In step 201, when the terminal is in a card-free state and starts up, it acquires parameter information of at least one cell.

According to an embodiment of the present disclosure, when the terminal is in a card-free state and starts up, it sends a measurement request to the network side device, and when receiving the neighbor cell information sent by the network device, measures at least one neighbor cell based on the neighbor cell information To obtain parameter information of at least one cell.

Illustratively, the parameter information includes signal strength and signal quality.

It should be noted that the neighboring cell is a cell where the radio frequency module on the terminal can receive the information sent by the cell. If the information sent by the cell can be received, the cell is determined to be a neighboring cell.

At step 202, at least one system information of at least one cell is received.

According to an embodiment of the present disclosure, after acquiring parameter information of at least one cell, a communication channel corresponding to at least one cell is obtained by parsing parameter information of at least one cell, and at least one system corresponding to at least one cell is received within the above communication channel information.

It should be noted that the system message includes information related to cell access and parameter information related to cell selection, where the information related to cell access may include but is not limited to: PLMN, Tracking Area Code (Tracking Area Code, TAC) ) And cell identification; parameter information related to cell selection may include, but is not limited to: scheduling information of maximum signal transmission power, signal coding power, signal reception quality, frequency band information, and system information.

In step 203, according to at least one system information, a candidate cell supporting cardless emergency communication is determined.

According to an embodiment of the present disclosure, after receiving a system message sent by a cell, it is necessary to determine whether the cell supports cardless emergency communication according to the system message sent by the cell, and if cardless emergency communication is supported, determine the cell that supports cardless emergency It is a candidate cell.

It should be noted that the system message includes parameter information of the support capability for supporting card-less emergency communication, and according to the parameter information of the support capability in the system message, it can be determined whether the cell supports card-free emergency communication.

Exemplarily, if the default ims-EmergencySupport-r9: true in the system message, it is determined that the cell is a cell that does not support card-free emergency communication.

In step 204, based on the parameter information of at least one cell, a target cell with the best communication capability is selected from the candidate cells.

According to an embodiment of the present disclosure, after determining the candidate cell, it is also necessary to select the cell with the best communication capability as the target cell based on the corresponding parameter information for the cell in the candidate cell.

It should be noted that the parameter information of the cell is a parameter used to characterize the communication capability of the cell. The parameter information of the cell may include the signal strength and signal quality of the cell, and the cells are prioritized according to the communication capability according to the signal strength and signal quality of the cell . In addition, the terminal can also periodically measure the signal status of the cell and dynamically change the signal sequence of each cell to ensure that the cell with the best communication capability is selected as the target cell every time.

In step 205, card-free emergency communication is performed in the target cell.

In the embodiment of the present disclosure, after determining the target cell, when the terminal receives the card-free emergency communication request and responds to the card-free emergency communication request, the terminal camps on the network of the target cell to perform card-free emergency communication.

It should be noted that when dialing an emergency number, the terminal can carry the emergency call service type to which the number belongs to identify the emergency call center to be accessed. The above emergency call service types include fire alarm, bandit police, mountain rescue and first aid. Once the call is successful, the corresponding call platform can be called according to the type of emergency call service in the logo.

Further, FIG. 3 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 3, when the terminal is in a card-free state and starts up, the step of acquiring parameter information of at least one cell (that is, step 201) may include steps 201a to 201c.

In step 201a, when the terminal is in the card-free state and starts up, it sends a measurement request to the network side device.

According to an embodiment of the present disclosure, when the terminal is in a card-free state and is turned on, the radio frequency module of the terminal sends a measurement request to the network side device.

It should be noted that the network-side device may send base stations for each cell.

In step 201b, the neighboring cell information sent by the network side device in response to the measurement request is received.

According to an embodiment of the present disclosure, after sending a measurement request to the network-side device, the radio frequency module of the terminal receives the neighbor cell information sent by the network-side device.

It should be noted that the radio frequency module of the terminal is used to send and receive various signals to neighboring cells.

In step 201c, according to the neighboring cell information, at least one neighboring cell is measured to obtain parameter information of at least one cell.

According to an embodiment of the present disclosure, after receiving the signal sent by the neighboring cell, the terminal measures the signal of at least one cell to obtain the parameter information of the cell.

It should be noted that the radio frequency module of the terminal can also be used to measure the signal of the cell to obtain the parameter information of the cell. The above parameter information can be used to characterize the communication capability of the cell, which can include: the signal strength of the cell and the signal quality of the cell.

Further, FIG. 4 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 4, according to at least one system information, the step of determining a candidate cell that supports card-free emergency communication (ie, step 203) may include steps 203a to 203d.

In step 203a, based on at least one system message, the terminal determines whether the system message includes preset parameters.

According to an embodiment of the present disclosure, after receiving at least one system message sent by at least one cell, the terminal may determine whether the system message includes preset parameters.

It should be noted that according to the 3GPP protocol, if the system message of the cell contains the preset parameter as ims-EmergencySupport-r9: true, the cell is determined to support card-free emergency communication, otherwise it is determined that the cell is not supported. Card emergency communication area.

In step 203b, when the system message includes preset parameters, it is determined that the cell corresponding to the system message is a cell that supports card-free emergency communication.

According to an embodiment of the present disclosure, according to the system message of the cell, if the system message of the cell includes preset parameters, it is determined that the cell corresponding to the system message is a cell that supports emergency communication without card.

In step 203c, when the system message does not include preset parameters, it is determined that the cell corresponding to the system message is a cell that does not support card-free emergency communication.

According to an embodiment of the present disclosure, according to the system message of the cell, if the default preset parameters in the system message of the cell are determined, the cell corresponding to the system message is determined to be a cell that does not support card-free emergency communication.

In step 203d, the cell supporting card-free emergency communication is determined as a candidate cell.

In the embodiment of the present disclosure, after determining whether the cell corresponding to the above system supports cardless emergency communication according to at least one system message of at least one cell, the cell supporting cardless emergency communication may be determined as a candidate cell.

Further, FIG. 5 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the step of selecting the target cell with the best communication capability from the candidate cells based on the parameter information of at least one cell (ie, step 204) may include

steps

204a and 204b.

In step 204a, according to the parameter information of the candidate cell, the priority is sorted according to the communication capability.

In the embodiment of the present disclosure, after determining a candidate cell that supports card-free emergency communication, the terminal prioritizes according to the parameter information of the candidate cell according to the level of communication capabilities.

It should be noted that the parameter information of the candidate cell includes the signal strength and signal quality of the cell, and the level of communication capabilities includes the level of signal strength and the level of signal quality.

Exemplarily, according to the parameter information of the candidate cell, the step of prioritizing according to the communication capability may include: when the signal strength meets a preset signal threshold, prioritizing according to the signal strength; when the signal strength is not satisfied When the signal threshold is preset, the priority is sorted according to the signal quality.

In step 204b, the cell with the best communication capability is selected as the target cell from the priority ranking.

In the embodiment of the present disclosure, after prioritizing according to the communication capability, the terminal selects the cell with the best communication capability as the target cell.

Further, FIG. 6 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 6, the parameter information includes the signal strength and signal quality, the communication capability may include the signal strength and the signal quality, and step 204a may include steps 204aa and 204ab.

In step 204aa, when the signal strength meets the preset signal threshold, the priority is sorted according to the signal strength.

In the embodiment of the present disclosure, the parameter information includes signal strength and signal quality, and the level of communication capabilities includes signal strength and signal quality, that is, the priority of cells can be sorted according to signal strength and signal quality.

Exemplarily, in this embodiment, the preset signal threshold may be set to -105 dBm, where dBm is a value characterizing the absolute value of power. When the signal strength is greater than -105 dBm, the terminal prioritizes according to the signal strength.

In step 204ab, when the signal strength does not meet the preset signal threshold, the priority is sorted according to the signal quality.

In the embodiment of the present disclosure, when it is determined that the signal does not satisfy the preset signal threshold, at this time, the terminal no longer performs priority ranking according to the signal strength, but further performs priority ranking according to the signal quality.

Further, FIG. 7 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 7, step 202A may be included after step 202 and before step 203, and step 204 may include

steps

204A and 204B.

In step 202A, according to the parameter information of at least one cell, the priority is sorted according to the communication capability.

According to an embodiment of the present disclosure, after receiving a system message of a cell and before determining a candidate cell that supports card-free emergency communication, the terminal may prioritize the communication capabilities according to the parameter information of at least one cell.

According to another embodiment of the present disclosure, the parameter information includes signal strength and signal quality. The level of communication capabilities includes the level of signal strength and the level of signal quality. The step of prioritizing according to the communication capability may include: when the signal strength meets the preset signal threshold, prioritize according to the signal strength; when the signal strength does not meet the preset signal threshold, according to the signal quality Prioritize.

In step 204A, the priority ranking is updated according to the candidate cells.

According to an embodiment of the present disclosure, after determining the candidate cell, the terminal updates the above priority ranking based on the candidate cell.

It should be noted that the method for updating the priority ranking may include: in the priority ranking, cells that do not support card-free emergency communication are excluded, and cells that support card-free emergency communication are reserved.

In step 204B, the cell with the highest communication capability is selected as the target cell from the updated priority list.

According to an embodiment of the present disclosure, after updating the priority list, the cell with the highest communication capability is selected as the target cell from the updated priority list.

It should be noted that the terminal according to the embodiment of the present disclosure may also periodically measure the signal status of the cell, and dynamically change the priority ranking of each cell to ensure that the target cell selected each time is the cell with the best communication capability. .

Further, FIG. 8 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 8, the step of performing card-free emergency communication in the target cell (ie, step 205) may include

steps

205a and 205b.

At step 205a, a card-free emergency communication request is received.

According to an embodiment of the present disclosure, the terminal receives a request for card-free emergency communication before initiating card-free emergency communication.

It should be noted that the cardless emergency communication request is used to indicate that the user needs to perform cardless emergency communication at this time, and can be sent on the terminal through a common dial pad or an emergency dial pad.

In step 205b, in response to the card-free emergency communication request, card-free emergency communication is performed in the target cell.

According to an embodiment of the present disclosure, after the terminal receives the card-free emergency communication request, the terminal responds to the card-free emergency communication request and camps in the target cell to perform card-free emergency communication.

Further, FIG. 9 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 9, the step of performing card-free emergency communication in the target cell (ie, step 205) may include

steps

206 and 207.

In step 206, when receiving the message that the target cell returns a call failure, a replacement cell with the next best communication capability is selected from the candidate cells.

According to an embodiment of the present disclosure, after the target cell performs card-less emergency communication, when the terminal receives a message that the target cell returns a call failure, a replacement cell with the next best communication capability is selected from the candidate cells.

It should be noted that the failure message includes but is not limited to: the Session Initiation Protocol (SIP) rejection code returned by the network side or the 2G/3G CS domain emergency call network side returns the carried call control message and failure message, here Not limited.

In step 207, card-free emergency communication is performed in the replacement cell.

According to an embodiment of the present disclosure, after selecting a replacement cell with the next lowest communication capability from the candidate cells, the terminal camps in the replacement cell and initiates card-free emergency communication.

Further, FIG. 10 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 10, according to an embodiment of the present disclosure, when receiving a message that the target cell returns a call failure, the step of selecting a replacement cell with the next best communication capability from the candidate cells (ie, step 206) may include step 206a To 206c.

In step 206a, when receiving the message that the target cell returns a call failure, the first PLMN corresponding to the target cell is acquired.

According to an embodiment of the present disclosure, when the terminal receives the call failure message returned by the target cell, the terminal determines that the emergency communication of the target cell has failed, and the terminal automatically acquires the first PLMN corresponding to the target cell.

In step 206b, the second PLMN corresponding to the replacement cell with the next best communication capability is acquired.

According to an embodiment of the present disclosure, after the terminal determines that the target cell has failed in emergency communication, the terminal will select a replacement cell with the next best communication capability from the priority list table, and acquire the second PLMN corresponding to the replacement cell.

In step 206c, when it is determined that the first PLMN and the second PLMN are different, the cell corresponding to the second PLMN is selected as the replacement cell.

According to an embodiment of the present disclosure, after acquiring the first PLMN of the target cell and the second PLMN corresponding to the candidate cell, the terminal needs to determine whether the first PLMN and the second PLMN are the same, when it is determined that the first PLMN and the second PLMN are different Then, the cell corresponding to the second PLMN is selected as the replacement cell. When it is determined that the first PLMN and the second PLMN are the same, the terminal continues to select the next sub-optimal cell with a different PLMN for cardless communication.

It should be noted that, because the cells of the same PLMN are more likely to have a network failure, in order to improve the call-through rate of card-free emergency communication, therefore, according to the embodiment of the present disclosure, after determining that the PLMN communication corresponding to the last cell fails, Select different PLMN cells to communicate to improve the call-through rate of card-free emergency communication. If the PLMNs corresponding to the cells in the vicinity of the terminal are the same, the terminal directly communicates in order of priority until the terminal successfully communicates without the card. .

Embodiments of the present disclosure provide a card-free emergency communication method. The method includes: when a terminal is in a card-free state and starts up, acquiring parameter information of at least one cell; receiving at least one system information of at least one cell; according to at least one System information to determine candidate cells that support card-free emergency communication; based on the parameter information of at least one cell, select a target cell with the best communication capability from the candidate cells; and perform card-free emergency communication in the target cell. As such, the embodiment according to the present disclosure not only considers the situation in which the network side does not support card-free emergency communication and causes emergency communication failure, and selects candidate cells that support card-free emergency communication from cells that support card-free emergency communication. At the same time, considering that the communication capabilities of the network will affect the success rate of emergency calls, a target cell that supports card-free emergency communication and has the best communication capability is selected for card-free emergency communication, which can shorten the call-through time of card-free emergency communication and improve Call-through rate of emergency communication without card.

FIG. 11 is a schematic flowchart of an implementation of a card-free emergency communication method according to an embodiment of the present disclosure. As shown in FIG. 11, according to the implementation of the present disclosure, the parameter information of the cell includes the strength and quality of the signal, and the method of card-free emergency communication may include steps 1101 to 1110.

In step 1101, the terminal starts up without a card.

According to an embodiment of the present disclosure, the terminal is not inserted into the card may mean that the terminal is not inserted into the user identification card, the global user identification card or the multimedia service identification card.

In step 1102, the signal sent by the cell is acquired.

According to an embodiment of the present disclosure, after the terminal is turned on without inserting a card, the terminal sends a test request to the cell and obtains a signal sent by the cell according to the test request.

In step 1103, the signal strength and quality of the cell are measured.

According to an embodiment of the present disclosure, after acquiring the signal sent by the cell, the terminal may measure the acquired signal to acquire the signal strength and signal quality of the cell.

It should be noted that the greater the absolute value of the signal strength, the stronger the signal, the greater the signal strength, and the better the signal quality.

In step 1104, system messages corresponding to different cells are received, and a cell that supports card-less emergency communication is determined.

According to an embodiment of the present disclosure, after the terminal acquires the signal sent by the cell, the terminal can also parse the signal to obtain the communication channel corresponding to the cell, receive the system message sent by the cell on the communication channel, and determine whether the cell is based on the system message of different cells Support card-less emergency communication, for example, the above system message can be a system information block (System Information Blocks, SIB) message.

It should be noted that, according to the system messages of different cells, the method for determining whether the cell supports card-free emergency communication may include: according to the system messages of different cells, determine whether the system messages include preset parameters; when the system messages include preset parameters When, the cell corresponding to the system message is a cell that supports card-free emergency communication; when the system message does not include preset parameters, the cell corresponding to the system message is a cell that does not support card-free emergency communication.

Exemplarily, the preset parameter may be: ims-EmergencySupport-r9: true.

In step 1105, the cells supporting card-free emergency communication are prioritized based on the signal strength and quality of the cells.

In the embodiment of the present disclosure, after acquiring the signal strength and quality of the cell and determining the cell supporting cardless emergency communication, the cell determined to support cardless emergency communication is prioritized based on the signal strength and quality of the cell.

It should be noted that the method of prioritizing the cells may include: first excluding cells that do not support card-free emergency communication by using cells determined to support card-free emergency communication, and then based on the signal strength and The signal quality prioritizes the cells. The method for prioritizing the cells may further include: prioritizing the cells according to the signal strength and signal quality of the cells, and then adjusting the ordered cells according to whether the cells support card-free emergency communication, excluding those that do not support For cells with card emergency communication, the priority order of cells supporting card-less emergency communication is reserved.

The method for prioritizing according to the signal strength and signal quality of the cell includes: when the signal strength of the cell satisfies the preset condition, prioritize the cell according to the signal strength; when the signal strength of the cell does not meet the preset condition , Prioritize the cells according to the above signal quality.

Exemplarily, when the signal strength of the cell satisfies a preset condition, prioritizing the cell according to the signal strength may include: when the cell signal strength is greater than -105dbm, prioritizing the cell according to the signal strength.

In step 1106, the cell with the highest priority is selected for camping.

According to an embodiment of the present disclosure, after determining the priority order of the cells, the cell with the highest priority may be selected for camping according to the priority order.

It should be noted that the cell with the highest priority here refers to the cell with the best communication capability and supporting card-free emergency communication.

In step 1107, an emergency call is initiated.

According to an embodiment of the present disclosure, after the terminal selects the cell with the highest priority for camping, when the terminal receives the emergency call request, the emergency call is initiated in response to the emergency call request.

In step 1108, it is determined whether the emergency call is successful. If it succeeds, go to step 1110, otherwise go to step 1109.

According to the embodiment of the present disclosure, after the terminal initiates the emergency call, it can also determine whether the emergency call is successful. When the emergency call is unsuccessful, it is necessary to continue to select the network of the next cell for camping.

It should be noted that, after the terminal initiates an emergency call, if the cell returns a failure message caused by various reasons, although the terminal's call interface still displays dialing, the underlying module and the call module of the terminal will automatically select a sub-optimal cell with a different PLMN Continue to initiate calls until connected.

Exemplarily, the failure message includes but is not limited to: SIP rejection code, call control message, and failed cell, which is not limited herein.

In step 1109, the next sub-optimal cell with a different PLMN is automatically selected for camping.

In the embodiment of the present disclosure, after the terminal determines that the emergency call is unsuccessful, the terminal will automatically select the next sub-optimal cell with a different PLMN for camping.

It should be noted that when the emergency call is unsuccessful, the PLMN of the cell may be abnormal. In order to improve the success rate of the next emergency call, it is necessary to select a cell with a sub-optimal PLMN with different communication capabilities for camping.

In step 1110, the emergency communication without card is successful.

Exemplarily, the terminal confirms that there are 4 cells in the neighboring cell, which are cell 1, cell 2, cell 3, and cell 4, respectively. The radio access type (RAT) of cell 1 is LTE and the PLMN is 46001; the RAT of cell 2 is wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) and the PLMN is 46001; the RAT of cell 3 is WCDMA and PLMN are 46002; Cell 4's RAT is Global System for Mobile (GSM) and PLMN is 46002. Based on steps 1101 to 1110, the method for the terminal to carry out card-free emergency communication can be achieved by the following steps.

First, the terminal measures the signal quality and signal strength of the above four cells, and the measured reference signal received power (Reference Signal Receiving Power, RSRP) of cell 1 = -80 dBm and the reference signal received quality (Reference Signal Receiving Quality, RSRQ) = -8dBm; Received Signal Code Power (RSCP) of Cell 2 = -85dBm and the ratio of the power spectral density (Noise, No) of energy (Energy Chip, EC) and white noise Ec/No = -6dB; Cell 3 RSCP=-95dBm and Ec/No=-5dB; Cell 4 Received Signal Strength Indicator (Received Signal Strength Indicator, RSSI)=-100dBm and signal power (Carrier, C) to interference (Interference, I) ratio C/I=9dB.

Secondly, the terminal determines that cell 1 does not support emergency calls and cell 2 to cell 4 support card-free emergency communication through the default ims-EmergencySupport-r9: true in the SIB message.

Again, the terminal prioritizes the four cells according to step 1105.

When the signal strength is >-105dBm, the priority is sorted in order from strong to weak; when the signal strength is <-105dBm, the priority is sorted in order from good to poor. Since the signal strengths of the four cells are all greater than -105 dBm, the ranking results of the four cells can be obtained as: cell 1>cell 2>cell 3>cell 4. At the same time, the results of cells that support card-free emergency communication are cell 2, cell 3, and cell 4.

You can first prioritize and then filter out the cells that do not support card-less emergency communication, or you can first filter and then prioritize, and you can get the priority ranking: cell 2>cell 3>cell 4.

Finally, the cell with the highest priority (ie, cell 2) is selected to camp and initiate an emergency call. When the failure message returned by cell 2 is received, the underlying module and the call module of the terminal automatically select a sub-optimal different from the PLMN of cell 2 Cell 3 initiates an emergency call. If it still fails, cell 4 is automatically selected to initiate an emergency call until the emergency call succeeds.

According to an embodiment of the present disclosure, when the terminal performs card-free emergency communication, the terminal selects a cell that supports card-free emergency communication and has the best communication capability to initiate an emergency call at the beginning of the call, therefore, the call-through rate of the terminal's emergency call can be improved , And after the emergency call is initiated, if the emergency call is unsuccessful due to the network side, the terminal will automatically select the cell that supports card-free emergency communication and has the second-best communication capability to continue the call, which can further improve the call of the terminal card-free emergency communication Pass rate.

An embodiment of the present disclosure provides a terminal, and FIG. 12 is a schematic diagram of a composition structure of the terminal according to an embodiment of the present disclosure. As shown in FIG. 12, the terminal includes at least a processor 1201, a memory 1202, a communication interface 1203, and a communication bus 1204. The communication bus 1204 is used to implement connection and communication between the processor, the communication interface, and the memory. The communication interface 1203 is used to communicate with the cell. The processor 1201 may be used to execute a card-free emergency communication program stored in the memory to perform the following operations: when the terminal is in a card-free state and starts up, acquiring parameter information of at least one cell; receiving at least one system information of at least one cell Determine the candidate cell supporting card-free emergency communication based on at least one system information; select the target cell with the best communication capability from the candidate cells based on the parameter information of at least one cell; and perform card-free emergency communication in the target cell.

Optionally, the processor may be used to execute a card-free emergency communication program stored in the memory to perform the following operations: when the terminal is in the card-free state and starts up, send a measurement request to the network side device; receive the network side device response Measuring the neighboring cell information sent by the request; measuring at least one neighboring cell according to the neighboring cell information to obtain parameter information of at least one cell.

Optionally, the processor may be used to execute a card-free emergency communication program stored in the memory to perform the following operations: according to at least one system message, determine whether the system message includes preset parameters; when the system message includes preset parameters , Determine that the cell corresponding to the system message is a cell that supports cardless emergency communication; when the system message does not contain preset parameters, determine that the cell corresponding to the system message is a cell that does not support cardless emergency communication; it will support cardless emergency The communicating cell is determined as a candidate cell.

Optionally, the processor may be used to execute a card-free emergency communication program stored in the memory to perform the following operations: based on the parameter information corresponding to the candidate cell, prioritize the candidate cells according to the level of communication capabilities; from the priority In the ranking, the candidate cell with the highest priority is selected as the target cell.

Optionally, the processor may also be used to execute a card-free emergency communication program stored in the memory to perform the following operations: after acquiring parameter information of at least one cell, and after determining that the card-free emergency communication is supported based on at least one system information Prior to the candidate cell, based on the cell parameter information, the priority is ranked according to the level of communication capability; according to the candidate cell, the priority ranking is updated; from the updated priority ranking, the cell with the best communication capability is selected as the target cell.

Optionally, the processor may be used to execute a card-free emergency communication program stored in the memory to perform the following operations: when the signal strength meets the preset signal threshold, prioritize according to the signal strength; when the signal strength does not meet When the signal threshold is preset, the priority is sorted according to the level of signal quality, where the parameter information includes signal strength and signal quality, and the level of communication capability includes signal strength and signal quality.

Alternatively, the processor may be used to execute a card-free emergency communication program stored in the memory to perform the following operations: receive a card-free emergency communication request; in response to the card-free emergency communication request, perform card-free emergency communication in the target cell.

Optionally, the processor may also be used to execute a card-free emergency communication program stored in the memory to perform the following operations: After the card-free emergency communication is performed in the target cell, when a call failure message returned by the target cell is received, Select a candidate cell with the next best communication capability from the candidate cells; perform card-free emergency communication in the candidate cell.

Optionally, the processor may be used to execute a card-free emergency communication program stored in the memory to perform the following operations: when receiving a call failure message returned by the target cell, acquire the PLMN corresponding to the target cell; acquire and communicate capabilities The second best PLMN corresponding to the replacement cell; when it is determined that the first PLMN and the second PLMN are different, the cell corresponding to the second PLMN is selected as the replacement cell.

In practical applications, the processor may be a central processing unit (CPU, Central Processing Unit), a microprocessor (MPU, Micro Processor Unit), a digital signal processor (DSP, Digital Signal Processing) or a field programmable gate array (FPGA, Field Programmable Gate Array) etc.

In addition, each component in the embodiment according to the present disclosure may be integrated into one processing unit, each unit may exist alone physically, and two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or software function modules.

If the integrated unit is implemented in the form of a software function module and is not sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this embodiment essentially or It is said that part of the contribution to the existing technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a computer device (may It is a personal computer, a server, or a network device, etc.) or a processor (processor) that performs all or part of the steps of the method described in this embodiment. Storage media may include: FRAM (ferromagnetic random access memory), read only memory (ROM, Read Only Memory), programmable read only memory (PROM, Programmable Read-Only Memory), erasable programmable Read only memory (EPROM, Erasable Programmable Read-Only Memory), electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), flash memory (Flash), magnetic surface memory, optical disc, or Various media that can store program codes, such as CD-ROM (Compact Disc Read-Only Memory), are not limited in the embodiments of the present disclosure.

An embodiment of the present disclosure provides a computer-readable storage medium on which a card-free emergency communication program is stored, and when the above-mentioned card-free emergency communication program is executed by a processor, the card-free emergency communication in one or more embodiments described above is implemented Methods.

Those skilled in the art should understand that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer usable program code.

The present disclosure is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each flow and/or block in the flowchart and/or block diagram and a combination of the flow and/or block in the flowchart and/or block diagram may be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processing machine, or other programmable data processing device to produce a machine that enables the generation of instructions executed by the processor of the computer or other programmable data processing device A device for realizing the functions specified in one block or multiple blocks of one flow or multiple flows of a flowchart and/or one block or multiple blocks of a block diagram.

These computer program instructions may also be stored in a computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, the instructions The device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to produce computer-implemented processing, which is executed on the computer or other programmable device The instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.

The above are only the embodiments of the present disclosure, and are not intended to limit the protection scope of the present disclosure.

Claims

A card-free emergency communication method, including:

When the terminal is in a card-free state and starts up, it acquires parameter information of at least one cell;

Receiving at least one system information of the at least one cell;

According to the at least one system information, determine a candidate cell supporting card-free emergency communication;

Select the target cell with the best communication capability from the candidate cells based on the parameter information of the at least one cell; and

Carry out card-free emergency communication in the target cell.
The method according to claim 1, wherein, when the terminal is in a card-free state and is turned on, the step of acquiring parameter information of at least one cell includes:

When the terminal is in a card-free state and starts up, it sends a measurement request to the network-side device;

Receiving neighboring cell information sent by the network side device in response to the measurement request; and

According to the neighboring cell information, measuring the at least one neighboring cell to obtain parameter information of the at least one cell.
The method according to claim 2, wherein the step of determining a candidate cell supporting card-free emergency communication based on the at least one system information includes:

According to the at least one system message, determine whether the system message includes preset parameters;

When the preset message is included in the system message, it is determined that the cell corresponding to the system message is a cell that supports emergency communication without card;

When the preset message is not included in the system message, determining that the cell corresponding to the system message is a cell that does not support card-free emergency communication; and

The cell supporting emergency communication without card is determined as the candidate cell.
The method according to claim 3, wherein the parameter information of the cell is used to characterize the communication capability of the cell, and based on the parameter information of the at least one cell, a target with the best communication capability is selected from the candidate cells The steps of the cell include:

Prioritize based on the parameter information corresponding to the candidate cell according to the level of communication capabilities; and

From the priority ranking, the cell with the best communication capability is selected as the target cell.
The method according to claim 3, wherein after the step of acquiring parameter information of the at least one cell, and before the step of determining a candidate cell supporting cardless emergency communication based on the at least one system information, the method Also includes:

Based on the cell parameter information, prioritizing according to the communication capabilities,

And based on the parameter information of the at least one cell, the step of selecting the target cell with the best communication capability from the candidate cells includes:

Update the priority ranking based on the candidate cell; and

From the updated priority ranking, the cell with the best communication capability is selected as the target cell.
The method according to claim 4 or 5, wherein the parameter information includes signal strength and signal quality, the level of the communication capability includes the level of signal strength and the level of signal quality, and based on the parameter information, according to the communication The steps to prioritize the capabilities include:

When the signal strength meets a preset signal threshold, prioritize according to the signal strength;

When the signal strength does not satisfy the preset signal threshold, the priority is sorted according to the level of the signal quality.
The method according to claim 1, wherein the step of performing card-free emergency communication in the target cell comprises:

Receive cardless emergency communication requests; and

In response to the cardless emergency communication request, cardless emergency communication is performed in the target cell.
The method according to claim 7, wherein after the card-free emergency communication is performed in the target cell, the method further comprises:

When receiving the message that the target cell returns a call failure, select a replacement cell with the next best communication capability from the candidate cells; and

Carry out card-free emergency communication in the replacement cell.
The method according to claim 8, wherein, when receiving a message that the target cell returns a call failure, the step of selecting a replacement cell with the next best communication capability from the candidate cells includes:

When receiving a message that the target cell returns a call failure, acquire the first public land mobile network PLMN corresponding to the target cell;

Obtain a second PLMN corresponding to the replacement cell with the second-lowest communication capability; and

When it is determined that the first PLMN and the second PLMN are different, the cell corresponding to the second PLMN is selected as the replacement cell.
A terminal includes a processor, a memory, a communication interface, and a communication bus, where,

The communication bus is used to implement connection communication between the communication interface, the processor and the memory;

The communication interface is used to communicate with the cell;

The processor is used to execute a card-free emergency communication program stored in a memory to implement the method according to any one of claims 1 to 9.
A computer-readable storage medium, wherein the computer-readable storage medium stores a card-free emergency communication program, and when the card-free emergency communication program is executed by a processor, causes the processor to implement claims 1 to 9 The method as described in any one.