WO2022021328A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2022021328A1
WO2022021328A1 PCT/CN2020/106210 CN2020106210W WO2022021328A1 WO 2022021328 A1 WO2022021328 A1 WO 2022021328A1 CN 2020106210 W CN2020106210 W CN 2020106210W WO 2022021328 A1 WO2022021328 A1 WO 2022021328A1
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WIPO (PCT)
Prior art keywords
frequency point
sim
user identity
network
emergency call
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PCT/CN2020/106210
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English (en)
French (fr)
Inventor
王培雷
陈功
李记锋
郝治磊
刘珺
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202080015298.7A priority Critical patent/CN114271022A/zh
Priority to PCT/CN2020/106210 priority patent/WO2022021328A1/zh
Publication of WO2022021328A1 publication Critical patent/WO2022021328A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present application relates to the field of communication, and in particular, to a communication method and a communication device.
  • emergency call services can use any network available at the time.
  • the terminal device can search the network in a wider frequency band to determine the available frequency points .
  • a terminal device can search the network in all frequency bands supported by the device. Due to the wide range of searching the network, the time for searching the network is long, which cannot meet the urgent needs of emergency calls.
  • the present application provides a communication method and a communication device, which can reduce the time for searching for an access frequency point for emergency call service.
  • the communication device may be a wireless communication device, or may be a part of a device in the wireless communication device, such as an integrated circuit product such as a system chip or a communication chip.
  • the wireless communication device may be a computer device that supports wireless communication functionality.
  • the wireless communication device may be a terminal such as a smart phone, or may be a wireless access network device such as a base station.
  • a system-on-chip may also be referred to as a system on chip (system on chip, SoC), or simply referred to as a SoC chip.
  • the communication chip may include a baseband processing chip and a radio frequency processing chip. Baseband processing chips are also sometimes referred to as modems or baseband chips.
  • the radio frequency processing chip is also sometimes referred to as a radio frequency transceiver (transceiver) or radio frequency chip.
  • some or all of the communication chips may be integrated inside the SoC chip.
  • the baseband processing chip is integrated in the SoC chip, and the radio frequency processing chip is not integrated with the SoC chip.
  • a communication method comprising: receiving request information of a first user identity, where the request information is used to request an emergency call service, and the first user identity is not resident in supporting the emergency call service
  • the second user identity resides on the network supporting the emergency call service
  • a connection request is sent to the network device with the first user identity to perform the emergency call service.
  • the access frequency point is a frequency point corresponding to the second user identity.
  • a connection request may be initiated based on the frequency point corresponding to the second user identity residing on the network supporting the voice service. Since it resides on a network that supports voice services, the frequency corresponding to the second user identity includes an access frequency that can be used to initiate an emergency call, which reduces the scope of network search. Therefore, in the process of searching for an access frequency , which can reduce the time to determine the access frequency point and improve the user experience.
  • the method further includes: searching according to at least one frequency point corresponding to the second user identity to determine the access frequency point.
  • the search range includes at least one frequency point corresponding to the second user identity. Therefore, the time for determining the access frequency point can be reduced, and the user experience can be improved.
  • the searching according to at least one frequency point corresponding to the second user identity includes: performing a search between at least one frequency point corresponding to the first user identity and the first frequency point corresponding to the first user identity.
  • a search is performed in at least one frequency point corresponding to the two user identities to determine the access frequency point.
  • the search range further includes at least one frequency point corresponding to the first user identity.
  • a search may be performed in at least one frequency point corresponding to the second user identity to determine the access frequency point.
  • the access frequency point is a frequency point used by the second user identity to camp on the network.
  • the second user identity resides on the network that supports the emergency call service, and the frequency used to reside the second user identity in the network can further reduce the scope of network search and reduce the frequency of determining access. time to improve user experience.
  • the network device corresponds to the second user identity.
  • the network device corresponds to the second user identity, and is a network device that can provide services for the second user identity. Whether the network device provides services for the first user identity under normal circumstances is not limited in this application. Based on the access frequency point, the first user identity can perform an emergency call service through the service provided by the network device.
  • the second user identity is determined according to the subscriber identification module SIM.
  • a communication device performing the method of the first aspect may be connected to a plurality of SIMs.
  • Each SIM corresponds to a user identity.
  • the first user identity corresponding to one of the SIMs does not reside in the network that supports emergency calls (for example, does not reside in the network)
  • the first user identity corresponding to other SIMs residing in the network that supports emergency calls can be determined.
  • Two at least one frequency point corresponding to the user identity, and a connection request is given to the access frequency point in the at least one frequency point, so as to carry out the emergency call service.
  • a communication device comprising: a receiving module and a sending module; the receiving module is configured to receive request information of a first user identity, where the request information is used to request an emergency call service, the first The user identity does not reside in the network that supports the emergency call service; the sending module is configured to, based on the access frequency point, send a connection request to the network device with the first user identity, so as to perform the emergency call service,
  • the access frequency point is a frequency point corresponding to the second user identity.
  • the apparatus further includes a processing module; the processing module is configured to perform a search according to at least one frequency point corresponding to the second user identity to determine the access frequency point.
  • the processing module is configured to search in at least one frequency point corresponding to the first user identity and at least one frequency point corresponding to the second user identity , to determine the access frequency point.
  • the access frequency point is a frequency point used by the second user identity to camp on the network.
  • the network device corresponds to the second user identity.
  • the second user identity is determined according to the subscriber identity module SIM.
  • a communication device comprising at least one processor and a communication interface, the communication interface is used for the terminal device to perform information interaction with other communication devices, when a program instruction is executed in the at least one processor , so that the terminal device executes the method according to the first aspect.
  • a communication system including a network device, and the communication apparatus described in the second aspect or the third aspect.
  • a computer program storage medium wherein the computer program storage medium has program instructions, and when the program instructions are executed, the method described in the first aspect is executed.
  • a chip in a sixth aspect, includes at least one processor, and when program instructions are executed in the at least one processor, the method of the first aspect is executed.
  • FIG. 1 is a schematic diagram of a communication scenario.
  • FIG. 2 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a terminal device.
  • FIG. 4 is a schematic flowchart of a communication method.
  • FIG. 5 is a schematic flowchart of a communication method provided by the present application.
  • FIG. 6 is a schematic flowchart of another communication method provided by the present application.
  • FIG. 7 is a schematic flowchart of another communication method provided by the present application.
  • FIG. 8 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another terminal device provided by another embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
  • the technical solutions of the present invention are mainly applicable to wireless communication systems.
  • the wireless communication system may comply with the wireless communication standard of the third generation partnership project (3GPP), or may comply with other wireless communication standards, such as the 802 of the Institute of Electrical and Electronics Engineers (IEEE). series (such as 802.11, 802.15, or 802.20) of wireless communication standards.
  • 3GPP Third Generation Partnership Project
  • IEEE Institute of Electrical and Electronics Engineers
  • series such as 802.11, 802.15, or 802.20
  • devices can be divided into devices that provide wireless network services and devices that use wireless network services.
  • the devices that provide wireless network services refer to those devices that make up a wireless communication network, which can be referred to as network equipment or network elements for short.
  • Network devices can be further classified into radio access network (RAN) devices and core network (core network, CN) devices.
  • RAN radio access network
  • CN core network
  • a typical RAN device includes a base station (BS).
  • Access network equipment can be used to connect terminals to a radio access network (RAN).
  • RAN radio access network
  • Access network devices are sometimes also referred to as wireless access points (APs), or transmission reception points (TRPs). Therefore, an access network device may also sometimes be referred to as an access device or an access network node.
  • APs wireless access points
  • TRPs transmission reception points
  • an access network device may also sometimes be referred to as an access device or an access network node. It can be understood that, in systems using different wireless access technologies, the names of devices with base station functions may be different. For convenience of description, the embodiments of the present application will collectively refer to devices that provide a terminal with a wireless communication access function as an access network device.
  • the access network equipment may be, for example, an evolved node B (evolved node B, eNB) in long term evolution (long term evolution, LTE), or may be a fifth generation (fifth generation, 5G) new radio (new radio, NR) Next generation node base station (gNB) in mobile communication system, evolutional Node B (eNB) of 4G long term evolution (long term evolution, LTE) system.
  • the access network device can be a macro base station (macro base station) or a micro base station (micro base station). Micro base stations are also sometimes referred to as small base stations or small cells.
  • the access network device may also be a roadside device or a certain terminal device with a wireless access function.
  • the gNB may adopt a centralized unit (centralized unit, CU)-distributed unit (distributed unit, DU) architecture, and the access network device may also be a device including a CU and/or DU.
  • the access network devices capable of implementing the functions involved in the base station side in the embodiments of the present application are collectively referred to as access network devices.
  • Devices that use wireless network services are usually located at the edge of the network and can be called end devices.
  • the user equipment can establish a connection with the network equipment, and provide wireless communication services for the user based on the services of the network equipment.
  • User equipment may communicate with one or more core networks (CN) via access network equipment.
  • CN core networks
  • terminal devices tend to move with users.
  • Terminal equipment may also sometimes be referred to as user equipment (UE), access terminal, terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, wireless network equipment, User agent, subscriber unit (SU) or user device.
  • UE user equipment
  • the user equipment may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication capable Handheld devices (such as mobile phones), computing devices (such as tablet computers, laptop computers) or other devices connected to wireless modems, in-vehicle devices, wearable devices (such as smart Watches, smart bracelets, smart helmets, smart glasses) or Internet of things (Internet of things, IOT) devices, terminal devices in the Internet of Vehicles, various smart home devices (such as smart meters and smart home appliances) and smart city devices (such as security or monitoring equipment, intelligent road traffic facilities) and any form of user equipment in the future network, etc.
  • some network devices such as relay nodes (relay nodes, RNs) or wireless routers, can sometimes be regarded as user equipment because they have UE identity or belong to users.
  • FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application.
  • a wireless communication system includes a terminal device and a base station.
  • the transmission link from the terminal equipment to the base station is marked as uplink (uplink, UL)
  • the transmission link from the base station to the terminal equipment is marked as downlink (downlink, DL).
  • uplink uplink
  • downlink downlink
  • data transmission in the uplink may be abbreviated as uplink data transmission or uplink transmission
  • data transmission in the downlink may be abbreviated as downlink data transmission or downlink transmission.
  • the base station can provide communication coverage for a specific geographical area through an integrated or external antenna device.
  • One or more terminal devices located within the communication coverage of the base station can access the base station.
  • a base station can manage one or more cells. Each cell has an identification, which is also called a cell identity (cell ID). From the perspective of radio resources, a cell is a combination of downlink radio resources and paired uplink radio resources (optional).
  • the terminal equipment and base station should know the predefined configuration of the wireless communication system, including the radio access technology (RAT) supported by the system and the wireless resource configuration specified by the system, such as the basic configuration of the radio frequency band and carrier.
  • a carrier is a frequency range that conforms to system regulations. This frequency range can be determined by the center frequency of the carrier (referred to as the carrier frequency) and the bandwidth of the carrier.
  • These system predefined configurations may be part of standard protocols of the wireless communication system, or may be determined through interaction between terminal equipment and base stations.
  • the content of the relevant standard protocol may be pre-stored in the memory of the terminal device and the base station, or embodied as a hardware circuit or software code of the terminal device and the base station.
  • the terminal equipment and the base station support one or more of the same RATs, such as 5G NR, 4G LTE, or RATs of future evolution systems.
  • the terminal device and the base station use the same air interface parameters, coding scheme, modulation scheme, etc., and communicate with each other based on the radio resources specified by the system.
  • FIG. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • Terminal equipment may include multiple components such as: memory (massive storage), processors, baseband subsystems, radio frequency integrated circuits (RFICs), radio frequency front end (RFFE) devices, and antennas ( antenna, ANT). These components may be coupled by various interconnecting buses or other electrical connections.
  • ANT_1 represents the first antenna
  • ANT_N represents the Nth antenna
  • N is a positive integer greater than 1.
  • Tx represents the transmit path
  • Rx represents the receive path.
  • the numbers in Tx_0, Tx_1, Rx_0, Rx_1, Rx_2, Rx_3 represent different paths.
  • Each path can represent a signal processing channel.
  • FBRx represents the feedback receiving path
  • PRx represents the primary receiving path
  • DRx represents the diversity receiving path.
  • HB means high frequency
  • LB means low frequency, both refer to the relative high and low frequency.
  • BB stands for baseband.
  • the radio frequency subsystem includes radio frequency integrated circuits (including at least one RFIC, such as RFIC 1, RFIC 2, etc.) and radio frequency front-end devices. According to the different receiving or transmitting paths of the signal, the radio frequency subsystem can also be divided into the radio frequency receive path (RF receive path) and the radio frequency transmit path (RF transmit path).
  • the radio frequency receiving channel can receive the radio frequency signal through the antenna, process the radio frequency signal (such as amplifying, filtering and down-converting) to obtain the baseband signal, and transmit it to the baseband subsystem.
  • the RF transmit channel can receive the baseband signal from the baseband subsystem, process the baseband signal (such as upconverting, amplifying and filtering) to obtain the RF signal, and finally radiate the RF signal into space through the antenna.
  • a radio frequency integrated circuit may be referred to as a radio frequency processing chip or a radio frequency chip.
  • the radio frequency subsystem may include an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer (mixer), a local oscillator (LOO) ), filters and other electronic devices, which can be integrated into one or more chips as required.
  • a radio frequency integrated circuit may be referred to as a radio frequency processing chip or a radio frequency chip.
  • the RF front-end device can also be an independent chip.
  • a radio frequency chip is also sometimes referred to as a receiver, transmitter, or transceiver.
  • the antenna can sometimes be considered part of the RF subsystem and can be integrated into the chip of the RF subsystem. Antennas, RF front-end devices, and RF chips can all be manufactured and sold separately.
  • the RF subsystem can also use different devices or different integration methods based on power consumption and performance requirements.
  • some devices belonging to the radio frequency front-end are integrated into the radio frequency chip, and even the antenna and the radio frequency front-end device are integrated into the radio frequency chip, and the radio frequency chip can also be called a radio frequency antenna module or an antenna module.
  • the baseband subsystem mainly completes the processing of baseband signals.
  • the baseband subsystem can extract useful information or data bits from the baseband signal, or convert the information or data bits into the baseband signal to be transmitted. These information or data bits may be data representing user data or control information such as voice, text, video, etc.
  • the baseband subsystem can implement signal processing operations such as modulation and demodulation, encoding and decoding.
  • the baseband signal processing operations are not identical for different radio access technologies, such as 5G NR and 4G LTE.
  • the radio frequency signal is usually an analog signal
  • the signal processed by the baseband subsystem is mainly a digital signal
  • an analog-to-digital conversion device is also required in the wireless communication device.
  • the analog-to-digital conversion device may be disposed in the baseband subsystem, or may be disposed in the radio frequency subsystem.
  • the analog-to-digital conversion device includes an analog-to-digital converter (ADC) that converts an analog signal to a digital signal, and a digital-to-analog converter (DAC) that converts a digital signal to an analog signal.
  • ADC analog-to-digital converter
  • DAC digital-to-analog converter
  • the baseband subsystem may be integrated into one or more chips, which may be referred to as baseband processing chips or baseband chips.
  • the baseband subsystem can be used as a separate chip, which can be called a modem or a modem chip.
  • Baseband subsystems can be manufactured and sold in units of modem chips. Modem chips are also sometimes called baseband processors or mobile processors.
  • the baseband subsystem can also be further integrated in a larger chip, manufactured and sold in a larger chip unit. This larger chip may be called a system-on-a-chip, system-on-a-chip, or system on a chip (SoC), or simply a SoC chip.
  • SoC system on a chip
  • the software components of the baseband subsystem can be built into the hardware components of the chip before the chip leaves the factory, or can be imported into the hardware components of the chip from other non-volatile memory after the chip leaves the factory, or can also be downloaded online through the network. and update these software components.
  • the communication subsystem includes a baseband subsystem and a radio frequency subsystem, and provides a wireless communication function for a wireless communication device.
  • the baseband subsystem is responsible for managing the software and hardware resources of the communication subsystem, and can configure the working parameters of the radio frequency subsystem.
  • the processor of the baseband subsystem can run a sub-operating system of the communication subsystem, and the sub-operating system is often an embedded operating system or a real-time operating system.
  • SIM subscriber identification module
  • This business model can be called a dual-card model.
  • the dual SIM cards may belong to the same mobile operator or different mobile operators, or the dual SIM cards may belong to the same standard or different standard.
  • the system may include a 5G system, an LTE system, a WCDMA system, a CDMA system, a GSM system, and the like.
  • the above-mentioned terminal device that supports two SIM cards can also be called a terminal device that supports two "user identities", or a terminal device that supports dual SIM dual standby (DSDS), that is, the terminal device can insert two SIM cards. card, and two SIMs can be on standby at the same time.
  • DSDS dual SIM dual standby
  • the "User Identity” is further explained below.
  • a "user identity” (eg, a first user identity or a second user identity) is a logical concept.
  • “user identity” may correspond to a subscriber identity module (subscriber identification module, SIM) card or subscriber information or a virtual SIM card or a subscriber identity (such as an international mobile subscriber identity (IMSI) or a temporary mobile subscriber identity ( temporary mobile subscriber identity, TMSI) etc.
  • SIM subscriber identification module
  • IMSI international mobile subscriber identity
  • TMSI temporary mobile subscriber identity
  • a terminal device that supports two user identities for the network side Said, can be regarded as two communication entities.
  • the network side will identify the same terminal equipment with multiple different SIM cards or multiple subscriber information as multiple different Even in reality, the terminal equipment that supports multiple different SIM cards or multiple subscription user information is only a physical entity.
  • the corresponding SIM card will be mainly used as "user identity”. example to illustrate.
  • a SIM card can be understood as a key for a terminal device to access a mobile network.
  • the SIM card and its evolution are collectively referred to as SIM in the embodiments of the present application.
  • the SIM can be an identity card of a global system for mobile communications (GSM) digital mobile phone user, used to store the user's identity code and key, and support the authentication of the user by the GSM system;
  • the SIM card can be a universal subscriber identity module (USIM), or an upgraded SIM card;
  • a SIM can also be a universal integrated circuit card (UICC) or an embedded SIM (embedded SIM).
  • UICC universal integrated circuit card
  • embedded SIM embedded SIM
  • - SIM, eSIM embedded SIM
  • soft SIM etc.
  • FIG. 3 is a schematic diagram of three terminal devices supporting dual SIM provided by an embodiment of the present application. Terminal devices including dual SIMs can be divided into the following three modes according to different transceiver capabilities of the terminal devices.
  • Figure 3(a) is a passive mode. Although two SIMs can be inserted, only one SIM can be used at the same time, that is, it can receive and transmit, and the other SIM is unavailable.
  • FIG. 3(b) shows the dual SIM dual standby (DSDS) mode.
  • the two SIMs share a set of transceivers.
  • the terminal equipment in the RRC idle state needs to monitor the paging messages of the two cards, such as using time division multiplexing. (time-division multiplexing, TDM) method to monitor.
  • TDM time division multiplexing
  • SIM 1 When there is an RRC connection between the terminal device and the base station of one of the SIMs (for example, SIM 1), it can also be called that SIM 1 enters the RRC connection state, or enters the RRC connection state as the first user, that is, it can send and receive data.
  • the RRC connection between the terminal device and the base station of another SIM (such as SIM 2) cannot be maintained.
  • SIM 2 is in the RRC idle state or RRC deactivated state, or in the RRC idle state or RRC deactivated state as a second user state.
  • Figure 3(c) is a dual SIM dual active (DSDA) mode: the two SIMs correspond to their respective transceivers.
  • the two SIMs can be in the RRC connection state at the same time, or in other words, the two SIMs can be in the RRC connection state at the same time as two user identities, that is, the terminal device can receive and send the data of the two SIMs at the same time.
  • the terminal device in the method 200 may also have two or more SIMs, or have two or more user identities.
  • the user identity #1 can send a connection request to the first network network device to access the first network. After user identity #1 accesses the first network, user identity #1 resides in the first network. When the user identity #1 needs to leave the first network, the user identity #1 may initiate a de-registration process to the first network.
  • FIG. 4 is a schematic flowchart of a communication method.
  • SOS phone numbers may vary from country to country. SOS calls are generally composed of 3 numbers so that people can remember and dial them. Some countries have several SOS phone numbers to contact different departments that provide emergency services. The urgency of these numbers has led countries to stipulate that they can use whatever network is available at the time.
  • the emergency call service When the emergency call service needs to be initiated, if the SIM resides on a network that supports the voice call service, the emergency call service can be performed through the network where the SIM resides.
  • the SIM does not camp on a network, or camps on a network that does not support emergency call services, it usually searches within the frequency band supported by the SIM to determine the access frequency point.
  • the network corresponding to the access frequency point supports the emergency call service.
  • the access frequency point is searched in the whole frequency band.
  • the process of searching to determine the access frequency point may be called network search or network search.
  • the terminal device may establish a connection with the network device according to the process shown in FIG. 3 to perform the emergency call service.
  • an access frequency point for emergency call is searched in the historical frequency points of the SIM. If the search is successful, that is, there is an access frequency point in the historical frequency points of the SIM, go to S140. If it fails, that is, there is no access frequency point in the historical frequency points of the SIM, go to S120.
  • the historical frequency point of the SIM can be understood as the frequency point where the SIM resided before S110, or the frequency point used by the SIM before S110.
  • an access frequency point is searched in the frequency band supported by the SIM. If the search is successful, that is, there is an access frequency point in the frequency band supported by the SIM, go to S140. If it fails, that is, there is no access frequency point in the frequency band supported by the SIM, go to S130.
  • an access frequency point is searched in the entire frequency band.
  • the full frequency band can be understood as all the frequency points where the terminal equipment supports the emergency call service. If the search is successful, that is, there are access frequency points in the entire frequency band, go to S140. If it fails, that is, there is no access frequency point in the entire frequency band, the emergency call fails.
  • a connection request is sent to the network device to initiate an emergency call.
  • the length of time to search the network in the full frequency band is strongly related to the bandwidth of the communication frequency band supported by the terminal device.
  • the wider the communication frequency band the more frequency points need to be searched for the network, and the longer it takes.
  • the SIM for emergency call service is not resident in the network that supports emergency call service, especially when there is no access frequency point for emergency call in the frequency band supported by the SIM, it is necessary to search the whole frequency band for In the case of determining the access frequency point, it takes a long time to determine the access frequency point, consumes a lot of time, cannot meet the urgent needs of emergency calls, and has poor user experience.
  • FIG. 5 is a schematic flowchart of a communication method provided by the present application.
  • the communication method 400 is for a terminal device.
  • the terminal device connects the first SIM and the second SIM.
  • the priority of the first SIM is higher than that of the second SIM.
  • the first SIM may be a SIM selected by a user or preset by a terminal device for making an emergency call.
  • search is performed according to the preferred frequency point of the second SIM to determine an access frequency point.
  • the first SIM may not reside in any network, that is, the first SIM may be in a state of network loss.
  • the network where the first SIM resides does not support voice call services such as emergency calls.
  • the network corresponding to the access frequency point supports the emergency call service, or in other words, the access frequency point supports the emergency call service.
  • the access frequency point may be a frequency point that supports the voice call service.
  • the preferred frequency of the second SIM may include the frequency currently used by the second SIM to camp on the network, or may include the frequency with higher priority corresponding to the second SIM in the area where the terminal device is located (for example, it may be operator equipment), and may also include historical frequency points of the second SIM, etc.
  • the historical frequency point of the second SIM that is, at least one frequency point that the second SIM used to reside in the network before S410.
  • the frequency used by the second SIM currently camping in the network may also be referred to as the camping frequency of the second SIM.
  • the access frequency point may be determined according to the preferred frequency point of each SIM in all or part of the SIMs other than the first SIM.
  • a search may be performed according to at least one frequency point corresponding to the first SIM and a preferred frequency point of the second SIM to determine the access frequency point.
  • the at least one frequency point corresponding to the first SIM may include historical frequency points of the first SIM.
  • the historical frequency points of the first SIM include at least one frequency point used by the first SIM to reside in the network before performing S410.
  • the at least one frequency point corresponding to the first SIM may further include the first supported frequency point.
  • the first supported frequency point includes a plurality of frequency points supported by the first SIM.
  • the first supported frequency point may also be understood as a frequency band supported by the first SIM.
  • the preferred frequency of the second SIM and the frequency that supports the voice service among other frequencies may be determined. After that, search in the frequency points that support the voice service.
  • the frequency point whose communication quality meets the preset condition can be used as the access frequency point.
  • Communication quality can be measured in the process of telecommunication communication to measure the pros and cons of the communication network. Usually, the communication quality is used to predict or evaluate the end-to-end communication quality, or the end-to-end communication status between terminals making a call.
  • the communication quality is usually determined by a communication parameter that can characterize the quality of the communication, for example, the communication quality can be represented by one or more of a bit error rate, a signal strength value, a signal-to-noise ratio, and the like.
  • the terminal device can evaluate the communication quality of each frequency point by detecting the signal strength value of the communication network of each frequency point.
  • the terminal device can detect the signal strength value of the communication network corresponding to a frequency point.
  • the terminal device may acquire the detected first signal strength value of the frequency point, and based on the first signal strength value, evaluate the communication quality of the frequency point according to a preset communication evaluation rule.
  • the terminal can also measure the signal received power (reference signal receiving power, RSRP), the received signal code power (received signal code power, RSCP), the power per modulation bit and the ratio of the noise spectral density ( ratio of energy per modulating bit to the noise spectral density, EcNo), signal to noise ratio (signal to noise ratio, SNR), reference signal receiving quality (reference signal receiving quality, RSRQ), bit error rate of the signal received by the antenna (bit errorratio , BER), block error rate (block error rate, BLER), packet error rate (packet error ratio, PER) and other parameters to achieve the measurement of the communication quality of each frequency point, of course, can also be measured by measuring Other parameters determine the communication quality of each frequency point.
  • RSRP reference signal receiving power
  • RSCP received signal code power
  • RSCP received signal code power
  • the at least one frequency point corresponding to the first SIM and the at least one frequency point corresponding to the second SIM there may be multiple frequency points whose communication quality satisfies the preset condition. Due to the urgency of the emergency call, when the first frequency point whose communication quality meets the preset condition is detected, the first frequency point can be used as the access frequency point.
  • the network may be searched according to the frequency point corresponding to the first SIM to determine the access frequency point.
  • the access frequency point may be determined according to the preferred frequency point of the second SIM. For details, please refer to FIG. 7 for description.
  • a search is performed among multiple frequency points supported by the first SIM to determine the access frequency point. For details, please refer to FIG. 6 for description.
  • a connection request is sent to a network device to perform an emergency call service.
  • Searching according to the preferred frequency point of the second SIM to determine the access frequency point for network access and emergency calls can improve the success rate of determining the access frequency point, reduce the time for determining the access frequency point, and reduce the need for emergency calls. Time-consuming business and improve user experience.
  • the embodiment of the present application does not limit the identity of the user who makes the emergency call.
  • the terminal device may send a connection request to the network device by using the first SIM, the second SIM, the IMSI or the TMSI, which is not limited in this embodiment of the present application.
  • the emergency call is made with IMSI or TMSI.
  • the access frequency is a frequency supported by the first SIM
  • the first SIM is used to make an emergency call.
  • the emergency call is made with the second SIM.
  • the first SIM is a SIM used for emergency calls and supports voice services.
  • the second SIM may only support data services and not voice services. Sending the connection request with the first SIM can improve the probability of a successful emergency call.
  • the first SIM may be the SIM selected by the user for emergency calls, or may be the SIM that the terminal device performs the voice service by default. Making an emergency call through other identities requires the terminal device to switch identities, which may take a certain amount of time. By sending the connection request with the first SIM, the urgent demand of the emergency call service can be better met.
  • a search may be performed according to the preferred frequency point of the second SIM to determine the access frequency point used for emergency call service.
  • searching for the access frequency point considering the preferred frequency point of the second SIM, the time for determining the access frequency point can be reduced, and the user experience can be improved.
  • FIG. 6 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • a search is performed among multiple frequency points supported by the first SIM to determine the access frequency point.
  • the description is made by taking the preferred frequency of the second SIM as the camping frequency used by the current camping of the second SIM as an example.
  • search among the historical frequency points of the first SIM and the resident frequency points of the second SIM If the search is successful, that is, there is an access frequency point in the historical frequency point of the first SIM and the resident frequency point of the second SIM, go to S540. If it fails, there is no access frequency point in the historical frequency point of the first SIM and the resident frequency point of the second SIM, then go to S520.
  • the network is searched in each frequency point, that is, the communication quality of each frequency point is detected, so that the frequency point whose communication quality meets the preset condition is used as the access frequency point.
  • search in the first support frequency point If the search is successful, and there is an access frequency point in the first support frequency point, go to S540. If it fails, and there is no access frequency point in the first support frequency point, go to S530.
  • the network may be searched only in the first supported frequency point other than the historical frequency point of the first SIM, so as to avoid repeated searches of the same frequency point.
  • a connection request is sent to the network device to initiate an emergency call.
  • the first SIM used for emergency calls is not camped on a network that supports voice calls
  • a search is performed according to the historical frequency of the first SIM and the camping frequency of the second SIM to determine the answer.
  • Access frequency point so that voice calls are made based on the access frequency point, and the resident frequency point of the first SIM is considered when searching to determine the access frequency point, which can reduce the time for determining the access frequency point and improve user experience.
  • a search may also be performed in the historical frequency points of the second SIM to determine the access frequency point. If the search is successful, that is, there is an access frequency point, go to S540. If it fails, that is, there is no access frequency point, search in a larger frequency range.
  • the search in the whole frequency band search process, the search may be performed only on the first supported frequency point and the resident frequency point of the second SIM.
  • FIG. 7 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • the access frequency point may be determined by searching according to the preferred frequency point of the second SIM.
  • the description is given by taking the preferred frequency of the second SIM as the camping frequency of the second SIM as an example.
  • the historical frequency points of the first SIM are searched. If the search is successful, that is, there is an access frequency point in the historical frequency point of the first SIM, go to S640. If it fails, there is no access frequency point in the historical frequency point of the first SIM, then go to S620.
  • search in the first supported frequency and the resident frequency of the second SIM If the search is successful, there is an access frequency point in the first support frequency point and the camping frequency point of the second SIM, and then go to S640. If it fails, and there is no access frequency point in the first supported frequency point and the camping frequency point of the second SIM, then go to S630.
  • a connection request is sent to the network device to initiate an emergency call.
  • a network search may also be performed in a frequency point supported by the second SIM.
  • a network search may also be performed in a frequency point supported by the second SIM.
  • FIG. 8 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • request information of a first user identity is received, where the request information is used to request an emergency call service, and the first user identity does not reside in a network supporting the emergency call service.
  • a connection request is sent to the network device with the first user identity to perform the emergency call service, so
  • the access frequency point is a frequency point corresponding to the second user identity.
  • S1010 to S1020 may be executed by a terminal device or a hardware device such as at least one processor.
  • the request information of the first user identity may be input by the user of the terminal device on a user interface (user interface, UI).
  • the user of the terminal device may select the first user identity on the UI of the terminal device, or the first user identity may be the default user identity of the terminal device.
  • the terminal device receives the request information, and the request information is used to request the emergency call service.
  • the application processors in the multiple processors are used to execute S1010.
  • the application processor receives the operation of the user of the terminal device in the UI, and the operation can be understood as request information of the first user identity, and requests to perform the emergency call service based on the first user identity.
  • a communication processor among the plurality of processors is used to perform S1020.
  • the communication processor may determine whether the second user identity resides on the network supporting the emergency call service, and in the case that the second user identity resides on the network supporting the emergency call service, based on the access frequency point, to The first user identity sends a connection request to the network device.
  • the communication processor may be a baseband processor or a mobile processor or the like.
  • the communication chip may receive request information of the first user identity sent by the application processor, where the request information is used to indicate an emergency call.
  • the application processor may determine the request information of the first user identity according to the operation that the user of the terminal device can perform on the UI of the terminal device, and send it to the communication chip.
  • the communication chip may perform S1010 to S1020.
  • the communication chip may be a modem chip, or other chips for realizing the functions of a baseband processor, a mobile processor, and a communication processor.
  • a search may also be performed according to at least one frequency point corresponding to the second user identity to determine the access frequency point.
  • the scope of the network search may include at least one frequency point corresponding to the second user identity.
  • the scope of the network search may also include at least one frequency point corresponding to the first user identity.
  • the frequency point is used as the access frequency point. Therefore, the time occupied by the network search can be further reduced, and the user experience can be improved.
  • the network device Since the access frequency point is the frequency point corresponding to the second user identity, the network device is the network device corresponding to the second user identity.
  • the network device can provide services to users through the access frequency point.
  • the user identity may be determined from the SIM.
  • Each SIM is used to indicate a user identity. Different operators use different frequency bands.
  • each operator's network equipment is used to provide services for the user identity indicated by the operator's SIM.
  • the network device of the operator is the network device corresponding to the user identity indicated by the SIM of the operator.
  • Emergency call services can use any network available at the time.
  • the network equipment of the operator can provide the service of the emergency call service.
  • FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 800 is connected to the first subscriber identity module SIM and the second SIM.
  • the priority of the first SIM is higher than that of the second SIM.
  • the terminal device 800 includes a search module 810 and a transceiver module 820 .
  • the search module 810 is configured to, in the case that the first SIM does not reside on a network that supports the emergency call service, search according to the preferred frequency points of the second SIM to determine an access frequency point, and the The network corresponding to the access frequency point supports the emergency call service.
  • the transceiver module 820 is configured to, based on the access frequency point, send a connection request to a network device to perform the emergency call service.
  • the search module 810 is configured to perform a search according to at least one frequency point corresponding to the first SIM and a preferred frequency point of the second SIM to determine the access frequency point.
  • the search module 810 is configured to perform a search in the historical frequency points of the first SIM, where the historical frequency points of the first SIM include at least data used by the first SIM before the access frequency point is determined.
  • a frequency point, the at least one frequency point information corresponding to the first SIM includes the historical frequency points of the first SIM.
  • the search module 810 is configured to, when the access frequency point does not exist in the historical frequency points of the first SIM, search the preferred frequency points of the second SIM to determine the access frequency point.
  • the search module 810 is configured to, when the access frequency point does not exist in the preferred frequency point of the second SIM, perform a search in the first supported frequency point to determine the access frequency point, the The at least one frequency point information corresponding to the first SIM includes the first supported frequency point, and the first supported frequency point includes a plurality of frequency points supported by the first SIM.
  • the preferred frequency of the second SIM includes a frequency currently used by the second SIM to camp on the network.
  • the first SIM is the SIM selected by the user for making an emergency call.
  • the transceiver module 820 is configured to send a connection request to the network device by using the first SIM.
  • FIG. 10 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 900 is connected to the first subscriber identity module SIM and the second SIM.
  • the priority of the first SIM is higher than that of the second SIM.
  • the terminal device 900 includes a processor 910 and a communication interface 920 .
  • the processor 910 is configured to, in the case where the first SIM does not reside on a network that supports the emergency call service, perform a search according to the preferred frequency points of the second SIM to determine an access frequency point, where The network corresponding to the access frequency point supports the emergency call service.
  • the communication interface 920 is configured to, based on the access frequency point, send a connection request to a network device to perform the emergency call service.
  • the processor 910 is configured to perform a search according to at least one frequency point corresponding to the first SIM and a preferred frequency point of the second SIM to determine the access frequency point.
  • the processor 910 is configured to perform a search in the historical frequency points of the first SIM, where the historical frequency points of the first SIM include at least the frequency points used by the first SIM before the access frequency point is determined.
  • a frequency point, the at least one frequency point information corresponding to the first SIM includes the historical frequency points of the first SIM.
  • the processor 910 is configured to, when the access frequency point does not exist in the historical frequency points of the first SIM, search in the preferred frequency points of the second SIM to determine the access frequency point.
  • the processor 910 is configured to, when the access frequency point does not exist in the preferred frequency point of the second SIM, perform a search in the first supported frequency point to determine the access frequency point, the The at least one frequency point information corresponding to the first SIM includes the first supported frequency point, and the first supported frequency point includes a plurality of frequency points supported by the first SIM.
  • the preferred frequency of the second SIM includes a frequency currently used by the second SIM to camp on the network.
  • the first SIM is the SIM selected by the user for making an emergency call.
  • the communication interface 920 is configured to send a connection request to the network device by using the first SIM.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication apparatus 2000 includes a receiving module 2010 and a sending module 2020 .
  • the receiving module 2010 is configured to receive request information of a first user identity, where the request information is used to request an emergency call service, and the first user identity does not reside in a network that supports the emergency call service.
  • the sending module 2020 is configured to, when the second user identity resides on the network that supports the emergency call service, based on the access frequency point, send a connection request to the network device with the first user identity to make the emergency call service, and the access frequency point is the frequency point corresponding to the second user identity.
  • the communication apparatus 2000 includes a processing module configured to perform a search according to at least one frequency point corresponding to the second user identity to determine the access frequency point.
  • the processing module is configured to search in at least one frequency point corresponding to the first user identity and at least one frequency point corresponding to the second user identity to determine the access frequency point.
  • the access frequency point is a frequency point used by the second user identity to camp in the network.
  • the network device corresponds to the second user identity.
  • the second user identity is determined according to a subscriber identification module SIM.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 3000 includes a processor 3010 and a communication interface 3020 .
  • the communication interface 3020 is used for the communication device 3000 to exchange information with other devices, and when the program instructions are executed in the processor 3010, the communication device 3000 can execute the method described above.
  • Embodiments of the present application further provide a communication system, which includes the aforementioned terminal device and network device.
  • a network device is used to receive connection requests.
  • Embodiments of the present application further provide a communication system, which includes the foregoing communication apparatus and network equipment.
  • An embodiment of the present application further provides a computer program storage medium, characterized in that, the computer program storage medium has program instructions, and when the program instructions are executed, the foregoing method is executed.
  • An embodiment of the present application further provides a chip system, characterized in that, the chip system includes at least one processor, and when a program instruction is executed in the at least one processor, the foregoing method is executed.
  • “at least one” refers to one or more, and “multiple” refers to two or more.
  • “And/or”, which describes the association relationship of the associated objects means that there can be three kinds of relationships, for example, A and/or B, which can indicate the existence of A alone, the existence of A and B at the same time, and the existence of B alone. where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • “At least one of the following” and similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请提供了一种通信方法和通信装置。通信方法包括：接收第一用户身份的请求信息，请求信息用于请求进行紧急呼叫业务，第一用户身份未驻留在支持紧急呼叫业务的网络；当第二用户身份驻留在支持紧急呼叫业务的网络时，基于接入频点，以第一用户身份向网络设备发送连接请求，以进行紧急呼叫业务，接入频点为第二用户身份对应的频点。当第一用户身份未驻留在支持紧急呼叫业务的网络，且第二用户身份驻留在支持紧急呼叫业务的网络时，基于第二用户身份对应的频点进行紧急呼叫业务，可以减小网络搜索的时间，更好的满足紧急呼叫迫切性的要求。

Description

通信方法和通信装置 技术领域
本申请涉及通信领域，具体涉及一种通信方法和通信装置。
背景技术
当用户遇到危险或碰到紧急情况需要帮助时，通常会在所携带的终端的拨号界面输入紧急号码，然后通过用户身份模块(subscriber identification module，SIM)拨出。一般情况下，紧急呼叫业务可以使用任何当时可用的网络。
在此过程中，一旦SIM的通信服务状态异常，例如SIM无通信服务或未接收到该SIM所对应的通信网络信号，终端设备可以在较宽的频段内进行搜网，以确定可用的频点。例如，终端设备可以在该设备支持的所有频段内进行搜网。由于搜网的范围较宽，导致搜网的时间较长，不能满足紧急呼叫的急迫性需求。
发明内容
本申请提供一种通信方法和通信装置，能够减少搜索用于进行紧急呼叫业务的接入频点的时间。
应理解，本申请实施例提供的方案中，通信装置可以是无线通信设备，也可以是无线通信设备中的部分器件，如系统芯片或通信芯片等集成电路产品。无线通信设备可以是支持无线通信功能的计算机设备。
具体地，无线通信设备可以是诸如智能手机这样的终端，也可以是诸如基站这样的无线接入网设备。系统芯片也可称为片上系统(system on chip，SoC)，或简称为SoC芯片。通信芯片可包括基带处理芯片和射频处理芯片。基带处理芯片有时也被称为调制解调器(modem)或基带芯片。射频处理芯片有时也被称为射频收发机(transceiver)或射频芯片。在物理实现中，通信芯片中的部分芯片或者全部芯片可集成在SoC芯片内部。例如，基带处理芯片集成在SoC芯片中，射频处理芯片不与SoC芯片集成。
第一方面，提供了一种通信方法，包括：接收第一用户身份的请求信息，所述请求信息用于请求进行紧急呼叫业务，所述第一用户身份未驻留在支持所述紧急呼叫业务的网络；当第二用户身份驻留在支持所述紧急呼叫业务的网络时，基于接入频点，以所述第一用户身份向网络设备发送连接请求，以进行所述紧急呼叫业务，所述接入频点为所述第二用户身份对应的频点。
用于进行紧急呼叫业务的第一用户身份未驻留在支持语音业务的网络，可以基于驻留在支持语音业务的网络的第二用户身份对应的频点进行发起连接请求。由于驻留在支持语音业务的网络，第二用户身份对应的频点中包括可以用于发起紧急呼叫的接入频点，减小了网络搜索的范围，从而在搜索接入频点的过程中，可以减少确定接入频点的时间，提高用户体验。
结合第一方面，在一些可能的实现方式中，所述方法还包括：根据所述第二用户身份对应的至少一个频点进行搜索，以确定所述接入频点。
在搜索接入频点的过程中，搜索范围包括所述第二用户身份对应的至少一个频点。从而，可以减少确定接入频点的时间，提高用户体验。
结合第一方面，在一些可能的实现方式中，所述根据所述第二用户身份对应的至少一个频点进行搜索，包括：在所述第一用户身份对应的至少一个频点和所述第二用户身份对应的的至少一个频点中进行搜索，以确定所述接入频点。
在搜索接入频点的过程中，搜索范围还包括可以在第一用户身份对应的至少一个频点。可以在用户身份对应的至少一个频点中不存在接入频点时，在第二用户身份对应的至少一个频点中进行搜索，以确定所述接入频点。
结合第一方面，在一些可能的实现方式中，所述接入频点为所述第二用户身份在网络中驻留所使用的频点。
第二用户身份驻留在驻留在支持所述紧急呼叫业务的网络，将第二用户身份在网络中驻留所使用的频点，可以进一步减小网络搜索的范围，降低确定接入频点的时间，提高用户体验。
结合第一方面，在一些可能的实现方式中，所述网络设备与所述第二用户身份对应。
该网络设备与第二用户身份对应，可以为第二用户身份提供服务的网络设备。该网络设备在一般情况下是否为第一用户身份提供服务，本申请不作限定。基于接入频点，第一用户身份可以通过该网络设备提供的服务进行紧急呼叫业务。
结合第一方面，在一些可能的实现方式中，所述第二用户身份是根据用户识别模块SIM确定的。
执行第一方面所述方法的通信设备可以连接多个SIM。每个SIM对应于一个用户身份。当其中的一个SIM对应的第一用户身份未驻留在支持紧急呼叫的网络(例如未在网络中驻留)的情况下，可以确定其他驻留在支持紧急呼叫的网络的其他SIM对应的第二用户身份对应的至少一个频点，并给予该至少一个频点中的接入频点建立连接请求，以进行紧急呼叫业务。
第二方面，提供一种通信装置，包括：接收模块、发送模块；所述接收模块用于，接收第一用户身份的请求信息，所述请求信息用于请求进行紧急呼叫业务，所述第一用户身份未驻留在支持所述紧急呼叫业务的网络；所述发送模块用于，基于接入频点，以所述第一用户身份向网络设备发送连接请求，以进行所述紧急呼叫业务，所述接入频点为第二用户身份对应的频点。
结合第二方面，在一些可能的实现方式中，该装置还包括处理模块；所述处理模块用于，根据所述第二用户身份对应的至少一个频点进行搜索，以确定所述接入频点。
结合第二方面，在一些可能的实现方式中，所述处理模块用于，在所述第一用户身份对应的至少一个频点和所述第二用户身份对应的的至少一个频点中进行搜索，以确定所述接入频点。
结合第二方面，在一些可能的实现方式中，所述接入频点为所述第二用户身份在网络中驻留所使用的频点。
结合第二方面，在一些可能的实现方式中，所述网络设备与所述第二用户身份对应。
结合第二方面，在一些可能的实现方式中，所述第二用户身份是根据用户识别模块 SIM确定的。
第三方面，提供一种通信装置，包括至少一个处理器和通信接口，所述通信接口用于所述终端设备与其他通信装置进行信息交互，当程序指令在所述至少一个处理器中执行时，使得所述终端设备执行如第一方面所述的方法。
第四方面，提供一种通信系统，包括网络设备，以及第二方面或第三方面所述的通信装置。
第五方面，提供一种计算机程序存储介质，其特征在于，所述计算机程序存储介质具有程序指令，当所述程序指令被执行时，使得第一方面所述的方法被执行。
第六方面，提供一种芯片，所述芯片系统包括至少一个处理器，当程序指令在所述至少一个处理器中执行时，使得第一方面所述的方法被执行。
附图说明
图1是一种通信场景的示意图。
图2是本申请实施例提供的一种终端设备的示意性结构图。
图3是一种终端设备的示意图。
图4是一种通信方法的示意性流程图。
图5是本申请提供的一种通信方法的示意性流程图。
图6是本申请提供的另一种通信方法的示意性流程图。
图7是本申请提供的又一种通信方法的示意性流程图。
图8是本申请实施例提供的有一种通信方法的示意性流程图。
图9是本申请一个实施例提供的一种终端设备的示意性结构图。
图10是本申请另一个实施例提供的另一种终端设备的示意性结构图。
图11本申请一个实施例提供的一种通信装置的示意性结构图。
图12本申请一个实施例提供的另一种通信装置的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本发明的技术方案主要适用于无线通信系统。该无线通信系统可以遵从第三代合作伙伴计划(third generation partnership project，3GPP)的无线通信标准，也可以遵从其他无线通信标准，例如电气电子工程师学会(Institute of Electrical and Electronics Engineers，IEEE)的802系列(如802.11，802.15，或者802.20)的无线通信标准。
应理解，无线通信系统中，设备可分为提供无线网络服务的设备和使用无线网络服务的设备。提供无线网络服务的设备是指那些组成无线通信网络的设备，可简称为网络设备(network equipment)，或网络单元(network element)。网络设备还可进一步分为无线接入网(radio access network，RAN)设备以及核心网(core network，CN)设备。典型的RAN设备包括基站(base station，BS)。
接入网设备可用于将终端接入无线接入网络(radio access network，RAN)。接入网设备有时也可以被称为无线接入点(access point，AP)，或发送接收点(transmission reception point，TRP)。因此，接入网设备有时也可称为接入设备或接入网节点。可以理解的是，采用不同无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同。为方便描 述，本申请实施例将为终端提供无线通信接入功能的装置统称为接入网设备。接入网设备例如可以是长期演进(long term evolution，LTE)中的演进型节点B(evolved node B，eNB)，也可以是第五代(fifth generation，5G)新无线电(new radio，NR)移动通信系统中的下一代基站节点(next generation node base station，gNB)，4G长期演进(long term evolution，LTE)系统的演进节点B(evolutional Node B，eNB)。接入网设备可以是宏基站(macro base station)，也可以是微基站(micro base station)。微基站有时也被称为小基站或小小区(small cell)。接入网设备也可以是具有无线接入功能的路侧设备或某个终端设备。gNB可以采用集中单元(centralized unit，CU)-分布单元(distributed unit，DU)架构，接入网设备也可以是包含CU和/或DU的设备。在本申请实施例中，将能够实现本申请实施例中基站侧所涉及的功能的设备统称为接入网设备。
使用无线网络服务的设备通常位于网络的边缘，可以称为终端设备。用户设备能够与网络设备建立连接，并基于网络设备的服务为用户提供无线通信业务。用户设备可以经接入网设备与一个或多个核心网(core network，CN)进行通信。相对于通常在固定地点放置的基站，终端设备往往随着用户一起移动。终端设备有时也可称为用户设备(user equipment，UE)、接入终端、终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、无线网络设备、用户代理、订户单元(subscriber unit，SU)或用户装置。用户设备可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless localloop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备(如移动电话(mobile phone))、计算设备(比如平板电脑(tablet computer)、膝上型电脑(laptop computer))或连接到无线调制解调器的其它设备、车载设备、可穿戴设备(比如智能手表，智能手环，智能头盔，智能眼镜)或物联网(internet of thing，IOT)设备、车联网中的终端设备、各种智能家居设备(比如智能电表和智能家电)以及智能城市设备(比如安防或监控设备，智能道路交通设施)以及未来网络中的任意形态的用户设备等。此外，有些网络设备，例如中继节点(relay node，RN)或者无线路由器等，由于具备UE身份，或者归属于用户，有时也可被认为是用户设备。
为了便于表述，本申请中将以基站和终端设备为例，详细说明本申请实施例的技术方案。
图1为本申请实施例提供的一种无线通信系统的结构示意图。如图1所示，无线通信系统包括终端设备和基站。按照传输方向的不同，从终端设备到基站的传输链路记为上行链路(uplink，UL)，从基站到终端设备的传输链路记为下行链路(downlink，DL)。相类似地，上行链路中的数据传输可简记为上行数据传输或上行传输，下行链路中的数据传输可简记为下行数据传输或下行传输。
该无线通信系统中，基站可通过集成或外接的天线设备，为特定地理区域提供通信覆盖。位于基站的通信覆盖范围内的一个或多个终端设备，均可以接入基站。一个基站可以管理一个或多个小区(cell)。每个小区具有一个身份证明(identification)，该身份证明也被称为小区标识(cell identity，cell ID)。从无线资源的角度看，一个小区是下行无线资源，以及与其配对的上行无线资源(非必需)的组合。
终端设备和基站应知晓该无线通信系统预定义的配置，包括系统支持的无线电接入技术(radio access technology，RAT)以及系统规定的无线资源配置等，比如无线电的频段 和载波的基本配置。载波是符合系统规定的一段频率范围。这段频率范围可由载波的中心频率(记为载频)和载波的带宽共同确定。这些系统预定义的配置可作为无线通信系统的标准协议的一部分，或者可通过终端设备和基站间的交互确定。相关标准协议的内容，可能会预先存储在终端设备和基站的存储器中，或者体现为终端设备和基站的硬件电路或软件代码。
该无线通信系统中，终端设备和基站支持一种或多种相同的RAT，例如5G NR，4G LTE，或未来演进系统的RAT。具体地，终端设备和基站采用相同的空口参数、编码方案和调制方案等，并基于系统规定的无线资源相互通信。
图2为本申请实施例提供的一种终端设备的结构示意图。
终端设备可包括多个组件，例如：存储器(massive storge)、处理器、基带子系统，射频集成电路(radio frequency intergreted circuit，RFIC)、射频前端(radio frequency front end，RFFE)器件，以及天线(antenna，ANT)。这些组件可以通过各种互联总线或其他电连接方式耦合。
ANT_1表示第一天线，ANT_N表示第N天线，N为大于1的正整数。Tx表示发送路径，Rx表示接收路径。Tx_0、Tx_1、Rx_0、Rx_1、Rx_2、Rx_3中的数字表示不同的路径。每条路径均可以表示一个信号处理通道。FBRx表示反馈接收路径，PRx表示主接收路径，DRx表示分集接收路径。HB表示高频，LB表示低频，两者是指频率的相对高低。BB表示基带。
射频子系统包括射频集成电路(包括至少一个RFIC，如RFIC 1、RFIC 2等)和射频前端器件等。根据信号的接收或发送路径的不同，射频子系统也可以分为射频接收通道(RF receive path)和射频发射通道(RF transmit path)。其中，射频接收通道可通过天线接收射频信号，对该射频信号进行处理(如放大、滤波和下变频)以得到基带信号，并传递给基带子系统。射频发送通道可接收来自基带子系统的基带信号，对基带信号进行处理(如上变频、放大和滤波)以得到射频信号，并最终通过天线将该射频信号辐射到空间中。射频集成电路可以被称为射频处理芯片或射频芯片。
具体地，射频子系统可包括天线开关，天线调谐器，低噪声放大器(low noise amplifier，LNA)，功率放大器(power amplifier，PA)，混频器(mixer)，本地振荡器(local oscillator，LO)、滤波器(filter)等电子器件，这些电子器件可以根据需要集成到一个或多个芯片中。射频集成电路可以被称为射频处理芯片或射频芯片。射频前端器件也可以是独立的芯片。射频芯片有时也被称为接收机(receiver)、发射机(transmitter)或收发机(transceiver)。随着技术的演进，天线有时也可以认为是射频子系统的一部分，并可集成到射频子系统的芯片中。天线、射频前端器件和射频芯片都可以单独制造和销售。当然，射频子系统也可以基于功耗和性能的需求，采用不同的器件或者不同的集成方式。例如，将属于射频前端的部分器件集成在射频芯片中，甚至将天线和射频前端器件都集成射频芯片中，该射频芯片也可以称为射频天线模组或天线模组。
基带子系统主要完成对基带信号的处理。基带子系统可以从基带信号中提取有用的信息或数据比特，或者将信息或数据比特转换为待发送的基带信号。这些信息或数据比特可以是表示语音、文本、视频等用户数据或控制信息的数据。例如，基带子系统可以实现诸如调制和解调，编码和解码等信号处理操作。对于不同的无线接入技术，例如5G NR和4G LTE，基带信号处理操作也不完全相同。
此外，由于射频信号通常是模拟信号，基带子系统处理的信号主要是数字信号，无线通信设备中还需要有模数转换器件。本申请实施例中，模数转换器件可以设置在基带子系统中，也可以设置在射频子系统中。模数转换器件包括将模拟信号转换为数字信号的模数转换器(analog to digital converter，ADC)，以及将数字信号转换为模拟信号的数模转换器(digital to analog converter，DAC)。
基带子系统可以集成为一个或多个芯片，该芯片可称为基带处理芯片或基带芯片。基带子系统可以作为独立的芯片，该芯片可被称调制解调器(modem)或modem芯片。基带子系统可以按照modem芯片为单位来制造和销售。modem芯片有时也被称为基带处理器或移动处理器。此外，基带子系统也可以进一步集成在更大的芯片中，以更大的芯片为单位来制造和销售。这个更大的芯片可以称为系统芯片，芯片系统或片上系统(system on a chip，SoC)，或简称为SoC芯片。基带子系统的软件组件可以在芯片出厂前内置在芯片的硬件组件中，也可以在芯片出厂后从其他非易失性存储器中导入到芯片的硬件组件中，或者还可以通过网络以在线方式下载和更新这些软件组件。
本申请实施例中，通信子系统包括基带子系统和射频子系统，为无线通信设备提供无线通信功能。通常，基带子系统负责管理通信子系统的软硬件资源，并且可配置射频子系统的工作参数。基带子系统的处理器中可以运行通信子系统的子操作系统，该子操作系统往往是嵌入式操作系统或实时操作系统(real time operating system)。
当前越来越多的终端设备支持同时插入两张用户身份模块(subscriber identification module，SIM)卡。比如，一张SIM卡用于私人业务，另一张SIM卡用于工作业务；或者一张SIM卡用于数据业务，另一张SIM卡用于语音业务。这种业务模式可以称为双卡模式。双卡可以属于同一移动运营商也可以属于不同移动运营商，或者双卡可以属于同一制式也可以属于不同制式。例如，所述制式可以包括5G系统、LTE系统、WCDMA系统、CDMA系统以及GSM系统等。
上述支持两张SIM卡的终端设备也可以被称为支持两个“用户身份”的终端设备，或者双卡双待(dual SIM dual standby，DSDS)的终端设备，即终端设备可以插入两张SIM卡，而且两个SIM能同时待机。下面对“用户身份”做进一步说明。
在本申请实施例中，“用户身份”(例如第一用户身份或第二用户身份)为逻辑概念。例如，“用户身份”可以对应用户身份模块(subscriber identification module，SIM)卡或签约用户信息或虚拟SIM卡或用户标识(如国际移动用户标识(international mobile subscriber identity，IMSI)或临时移动用户标识(temporary mobile subscriber identity，TMSI)等。从网络侧的角度来看，不同的“用户身份”在逻辑上对应网络侧服务的不同通信实体。例如一个支持两个用户身份的终端设备，对于网络侧来说，可以看作两个通信实体。再例如，“用户身份”对应SIM卡或签约用户信息时，网络侧会将多个不同SIM卡或多个签约用户信息的同一终端设备识别为多个不同的通信实体，即使在实际上，支持多个不同SIM卡或多个签约用户信息的终端设备只是一个物理实体。需要说明的是，本申请实施例中将主要以“用户身份”对应SIM卡为例进行说明。
示例性地，SIM卡可以理解为终端设备接入移动网络的钥匙，为了便于描述，本申请实施例中将SIM卡以及其演进都统称为SIM。例如SIM可以是全球移动通信系统(global system for mobile communications，GSM)数字移动电话用户的身份识别卡，用于存储用户的身份识别码和密钥，并支持GSM系统对用户的鉴权；又例如，SIM卡可以是全球用 户识别卡(universal subscriber identity module，USIM)，也可以称为升级SIM卡；再例如SIM也可以是通用集成电路卡(universal integrated circuit card，UICC)或嵌入式SIM(embedded-SIM，eSIM)或软SIM等能够标识用户身份的其他形式。本申请实施例以SIM进行说明，并不构成对本申请的限制。
以下对支持两个用户身份的终端设备，例如能够支持两个SIM的终端设备，进行说明。其中，一个SIM的基站也可以说是终端设备中一个用户身份对应的基站，也可以理解为该基站服务该SIM对应的通信实体。图3是本申请实施例提供的三种支持双SIM的终端设备的示意图。根据终端设备的收发能力不同，可以将包含双SIM的终端设备分为以下三种模式。
图3(a)为被动(passive)模式，尽管能插入两个SIM，但是同一时刻只有一个SIM可以使用，即可以接收(receive)和发送(transmit)，另一个SIM不可用(unused)。
图3(b)为双卡双待(dual SIM dual standby，DSDS)模式，两张SIM共享一套收发机，RRC空闲态的终端设备需要监听两张卡的寻呼消息，比如采用时分复用(time-division multiplexing，TDM)方式来监听。当终端设备与其中一个SIM(例如SIM 1)的基站之间存在RRC连接，也可以称为SIM 1进入RRC连接态，或者说以第一用户身份进入RRC连接态，即能够发送和接收数据，终端设备与另一个SIM(例如SIM 2)的基站之间无法保持RRC连接，也可以说SIM 2处于RRC空闲态或RRC去激活态，或者说以第二用户身份处于RRC空闲态或RRC去激活态。
图3(c)为双卡双激活(dual SIM dual active，DSDA)模式：两个SIM对应各自的收发机。两个SIM可以同时处于RRC连接态，或者说，以两个用户身份同时处于RRC连接态，即终端设备可以同时接收和发送两个SIM的数据。
此外，方法200中的终端设备也可以拥有两个甚至更多个SIM，或者说拥有两个甚至更多个用户身份，具体地，用户身份#1能够向第一网络网络设备发送连接请求，以接入第一网络。当用户身份#1接入第一网络后，用户身份#1驻留在第一网络中。当该用户身份#1需要离开第一网络，用户身份#1可以向第一网络发起去注册流程。
图4是一种通信方法的示意性流程图。
很多国家为紧急呼叫(emergency call)设立有热线，目的是使得求助人在遇到危急情况时求救，使用警察、消防或救护的紧急服务。每个国家的求救电话号码可能会有差异。求救电话一般都由3个数字组成，以便求助人记忆和拨打。有些国家有几个求救电话号码，联络不同提供紧急服务的部门。这些号码的紧急性使各国都规定它们可以使用任何当时可用的网络。
需要发起紧急呼叫业务时，如果SIM驻留在支持语音通话业务的网络，则可以通过SIM驻留的网络进行紧急呼叫业务。
如果SIM无驻留网络，或者驻留在不支持紧急呼叫业务的网络，通常在该SIM支持的频段内搜索以确定接入频点。接入频点对应的网络支持紧急呼叫业务。当该SIM支持的频段内不存在接入频点时，在全频段对接入频点进行搜索。搜索以确定接入频点的过程，可以称为网络搜索或搜网等。
例如，SIM无驻留网络时，终端设备可以按照图3所示的流程，与网络设备建立连接，以进行紧急呼叫业务。
在S110，在SIM的历史频点中搜索用于紧急呼叫的接入频点。如果搜索成功，即在 SIM的历史频点中存在接入频点，进行S140。如果失败，即在SIM的历史频点中不存在接入频点，则进行S120。SIM的历史频点，可以理解为，在S110之前SIM驻留过的频点，或者，在S110之前SIM使用过的频点。
在S120，在SIM的支持频段内搜索接入频点。如果搜索成功，即在SIM的支持频段中存在接入频点，进行S140。如果失败，即在SIM的支持频段中不存在接入频点，则进行S130。
在S130，全频段搜索接入频点。全频段，可以理解为终端设备支持紧急呼叫业务的全部频点。如果搜索成功，即在全频段中存在接入频点，进行S140。如果失败，即在全频段中不存在接入频点，则紧急呼叫失败。
在S140，基于接入频点，向网络设备发送连接请求，以发起紧急呼叫。
全频段搜网的时间长度与终端设备支持的通信频段的带宽强相关。通信频段越宽，需要进行搜网的频点越多，耗时越长。以当前中国国内全网通手机(支持国内各个运营商的移动通信制式的终端设备)为例，进行全频段的搜网，需要200多秒的时间。
因此，当进行紧急呼叫业务的SIM未在支持紧急呼叫业务的网络中驻留，特别是在该SIM支持的频段内不存在用于紧急呼叫的接入频点时，需要在全频段内搜索以确定接入频点的情况下，确定接入频点需要较长的时间，时耗较多，无法满足紧急呼叫的急迫性需求，用户体验较差。
为了解决上述问题，本申请实施例提供的一种通信方法。
图5是本申请提供的一种通信方法的示意性流程图。通信方法400用于终端设备。该终端设备连接第一SIM和第二SIM。
对于紧急呼叫业务，第一第一SIM的优先级高于第二SIM。例如，第一SIM可以是用户选择的或终端设备预先设置的用于进行紧急呼叫的SIM。
在S410之前，可以判断第一SIM是否驻留在支持紧急呼叫业务的网络。
在S410，在所述第一SIM未驻留在支持所述紧急呼叫业务的网络的情况下，根据所述第二SIM的优选频点进行搜索，以确定接入频点。
例如，第一SIM可以未驻留在任何网络，即第一SIM可以处于丢网的状态。或者，第一SIM驻留的网络不支持紧急呼叫等语音通话业务。
接入频点对应的网络支持紧急呼叫业务，或者说，接入频点支持紧急呼叫业务。接入频点可以是支持语音通话业务的频点。
第二SIM的优选频点，可以包括第二SIM当前在网络中驻留所使用的频点，也可以包括在终端设备所在的区域第二SIM对应的优先级较高的频点(例如可以是运营商设备的)，还可以包括第二SIM的历史频点等。第二SIM的历史频点，即在S410之前第二SIM曾经在网络中驻留所使用过的至少一个频点。第二SIM当前在网络中驻留所使用的频点也可以称为第二SIM的驻留频点。
应当理解，终端设备包括多个SIM时，可以根据第一SIM之外的全部或部分SIM中的每个SIM的优选频点确定接入频点。
进行S410的过程中，可以根据第一SIM对应的至少一个频点和第二SIM的优选频点进行搜索，以确定接入频点。
第一SIM对应的至少一个频点可以包括第一SIM的历史频点。第一SIM的历史频点包括进行S410之前，第一SIM曾经在网络中驻留所使用的至少一个频点。
第一SIM对应的至少一个频点还可以包括第一支持频点。第一支持频点包括第一SIM支持的多个频点。第一支持频点也可以理解为第一SIM支持的频段。
在进行搜索之前，可以确定第二SIM的优选频点以及其他频点中，支持语音业务的频点。之后，在支持语音业务的频点中进行搜索。
在搜索的过程中，可以将通信质量满足预设条件的频点，作为接入频点。通信质量可以在电信通信过程中衡量的通信网络的优劣程度。通常通过所述通信质量来预测或评测进行通话的终端之间，即端到端的通信质量，或端到端的通信状况。通信质量通常通过能表征通信质量优劣的通信参数来确定，例如，可以通过误码率、信号强度值、信噪比等中的一个或多个表示通信质量。
具体的，终端设备可以通过检测各个频点的通信网络的信号强度值来评测该频点的通信质量。终端设备可以检测一个频点对应的通信网络的信号强度值。终端设备可以获取检测到的该频点的第一信号强度值，基于第一信号强度值，按照预设通信评测规则对该频点的通信质量进行评测。
可选的，终端还可以通过测量终端上天线接收的信号接收功率(reference signal receiving power，RSRP)、接收信号码功率(received signal code power，RSCP)、每调制比特功率和噪声频谱密度的比率(ratio of energy per modulating bit to the noise spectral density，EcNo)、信噪比(signal to noise ratio，SNR)、参考信号接收质量(reference signal receivingquality，RSRQ)、天线接收的信号的误码率(bit errorratio，BER)、误块率(blockerror rate，BLER)、数据包差错率(packet error ratio，PER)等参数中的至少一种参数来实现对各个频点的通信质量的测量，当然也可以通过测量其他的参数以确定各个频点的通信质量。
第一SIM对应的至少一个频点和第二SIM对应的至少一个频点中，可能存在多个通信质量满足预设条件的频点。由于紧急呼叫的急迫性，当检测到通信质量满足预设条件的第一个频点时，可以将该第一个频点作为接入频点。
可以在第二SIM的优选频点中不存在接入频点时，根据第一SIM对应的频点进行搜网，以确定接入频点。
也可以在确定第一SIM的历史频点中不存在接入频点时，根据第二SIM的优选频点确定接入频点。具体可以参见图7说明。
还在确定第一SIM的历史频点和第二SIM的优选频点中不存在接入频点时，在第一SIM支持的多个频点中进行搜索，从而确定接入频点。具体可以参见图6说明。
在S420，基于所述接入频点，向网络设备发送连接请求，以进行紧急呼叫业务。
根据第二SIM的优选频点进行搜索，从而确定接入频点，进行网络接入和紧急呼叫，能够提高确定接入频点的成功率，减少确定接入频点的时间，降低进行紧急呼叫业务的时耗，提高用户体验。
本申请实施例对进行紧急呼叫的用户身份不作限定。
终端设备可以以第一SIM、第二SIM、IMSI或TMSI向网络设备发送连接请求，本申请实施例不作限定。
例如，当接入频点为第一SIM支持的频点和第二SIM支持的频点之外的频点时，以IMSI或TMSI进行紧急呼叫。当接入频点为第一SIM支持的频点时，以第一SIM进行紧急呼叫。当接入频点为第二SIM支持的频点时，以第二SIM进行紧急呼叫。
一方面，第一SIM是用于紧急呼叫的SIM，支持语音业务。第二SIM可能仅支持数 据业务，不支持语音业务。以第一SIM发送连接请求，可以提高紧急呼叫成功的可能性。
另一方面，第一SIM可以是用户选择用于紧急呼叫的SIM，也可以是终端设备默认进行语音业务的SIM。通过其他身份进行紧急呼叫，需要终端设备进行身份的切换，可能占用一定的时间。以以第一SIM发送连接请求，可以更好的满足紧急呼叫业务迫切性的需求。
通过S410至S420，用于紧急呼叫的第一SIM未驻留在支持语音业务的网络，可以根据第二SIM的优选频点进行搜索，以确定用于进行紧急呼叫业务的接入频点。在进行对接入频点的搜索时，考虑第二SIM的优选频点，可以减少确定接入频点的时间，提高用户体验。
图6是本申请实施例提供的一种通信方法的示意性流程图。
在确定第一SIM的历史频点和第二SIM的优选频点中不存在接入频点时，在第一SIM支持的多个频点中进行搜索，从而确定接入频点。以第二SIM的优选频点为第二SIM的当前驻留所使用的驻留频点为例进行说明。
在S510，在第一SIM的历史频点和第二SIM的驻留频点中搜索。如果搜索成功，即在第一SIM的历史频点和第二SIM的驻留频点中存在接入频点，进行S540。如果失败，在第一SIM的历史频点和第二SIM的驻留频点中不存在接入频点，则进行S520。
在各个频点中搜网，即检测各个频点的通信质量，从而将通信质量满足预设条件的频点作为接入频点。
在S520，在第一支持频点中搜索。如果搜索成功，在第一支持频点中存在接入频点，进行S540。如果失败，在第一支持频点中不存在接入频点，则进行S530。
应当理解，在进行S520的过程中，可以仅在第一SIM的历史频点之外的第一支持频点中搜网，避免同一频点的重复搜索。
在S530，全频段搜索。如果搜索成功，即在全频段中存在接入频点，进行S540。如果失败，即在全频段中不存在接入频点，则紧急呼叫失败。
应当理解，在进行S530的过程中，可以仅对第一支持频点和第二SIM的驻留频点之外的频点进行搜索，避免同一频点的重复搜索。
在S540，基于接入频点，向网络设备发送连接请求，以发起紧急呼叫。
在用于紧急呼叫的第一SIM未驻留在支持语音通话的网络的情况下，在进行紧急呼叫时，根据第一SIM的历史频点和第二SIM的驻留频点进行搜索以确定接入频点，从而基于接入频点进行语音呼叫，在搜索以确定接入频点时考虑了第一SIM的驻留频点，能够减少确定接入频点的时间，提高用户体验。
示例性地，在S510或S520，也可以在第二SIM的历史频点中进行搜索以确定接入频点。如果搜索成功，即存在接入频点，进行S540。如果失败，即不存在接入频点，在更大的频率范围内进行搜索。
在S530，全频段搜索过程中，可以仅对第一支持频点和第二SIM的驻留频点之外进行搜索。
图7是本申请实施例提供的一种通信方法的示意性流程图。
可以在确定第一SIM的历史频点中不存在接入频点时，根据第二SIM的优选频点进行搜索，确定接入频点。以第二SIM的优选频点为第二SIM的驻留频点为例进行说明。
在S610，在第一SIM的历史频点中搜索。如果搜索成功，即在第一SIM的历史频点 中存在接入频点，进行S640。如果失败，在第一SIM的历史频点中不存在接入频点，则进行S620。
在S620，在第一支持频点和第二SIM的驻留频点中搜索。如果搜索成功，在第一支持频点和第二SIM的驻留频点中存在接入频点，进行S640。如果失败，在第一支持频点和第二SIM的驻留频点中不存在接入频点，则进行S630。
在S630，全频段搜索。如果搜索成功，即在全频段中存在接入频点，进行S640。如果失败，即在全频段中不存在接入频点，则紧急呼叫失败。
应当理解，全频段搜索过程中，可以仅对第一支持频点之外的频点进行搜索。
在S640，基于接入频点，向网络设备发送连接请求，以发起紧急呼叫。
示例性地，在S630之前，也可以在第二SIM支持的频点中进行搜网。当第二SIM支持的频点中不存在接入频点时，进行S630。
图8是本申请实施例提供的一种通信方法的示意性流程图。
在S1010，接收第一用户身份的请求信息，所述请求信息用于请求进行紧急呼叫业务，所述第一用户身份未驻留在支持所述紧急呼叫业务的网络。
在S1020，当第二用户身份驻留在支持所述紧急呼叫业务的网络时，基于接入频点，以所述第一用户身份向网络设备发送连接请求，以进行所述紧急呼叫业务，所述接入频点为所述第二用户身份对应的频点。
S1010至S1020可以由终端设备或至少一个处理器等硬件装置执行。
当终端设备执行S1010至S1020时，第一用户身份的请求信息，可以是终端设使用者在用户界面(user interface，UI)的输入。终端设使用者可以在终端设备的UI上选择第一用户身份，或者，第一用户身份可以是终端设备默认的用户身份。终端设使用者输入紧急呼叫号码，并点击用于指示通话呼叫的图标，则终端设备接收的请求信息，该请求信息用于请求进行紧急呼叫业务。
当终端设备中的多个处理器执行S1010至S1020时，多个处理器中的应用处理器用于执行S1010。应用处理器接收终端设备使用者在UI的操作，该操作可以理解为第一用户身份的请求信息，请求基于第一用户身份的进行紧急呼叫业务。多个处理器中的通信处理器用于执行S1020。通信处理器可以判断第二用户身份是否驻留在支持所述紧急呼叫业务的网络，并且在第二用户身份驻留在支持所述紧急呼叫业务的网络的情况下，基于接入频点，以所述第一用户身份向网络设备发送连接请求。通信处理器可以是基带处理器或移动处理器等。
当通信芯片执行S1010至S1020时，通信芯片可以接收应用处理器发送的第一用户身份的请求信息，请求信息用于指示紧急呼叫。应用处理器可以根据终端设使用者可以在终端设备的UI上的操作，确定第一用户身份的请求信息，并发送至通信芯片。从而，通信芯片可以执行S1010至S1020。通信芯片可以是modem芯片，或其他用于实现基带处理器、移动处理器、通信处理器的功能的芯片。
在S1020之前，还可以根据所述第二用户身份对应的至少一个频点进行搜索，以确定所述接入频点。
也就是说，在进行网络搜索，建立紧急呼叫业务的网络连接时，网络搜索的范围可以包括第二用户身份对应的至少一个频点。
当然，在一些实施例中，网络搜索的范围也可以包括第一用户身份对应的至少一个频 点。
在一些实施例中，可以优先判断第二用户身份在网络中驻留所使用的频点是否满足紧急呼叫业务的要求，在满足要求的情况下，将第二用户身份在网络中驻留所使用的频点作为接入频点。从而，可以进一步减小网络搜索占用的时间，提升用户体验。
由于接入频点是第二用户身份对应的频点，因此，网络设备是第二用户身份对应的网络设备。该网络设备可以通过接入频点为用户提供服务。
应当理解，用户身份可以是根据SIM确定的。每个SIM用于指示一种用户身份。不同的运营商使用的频段不同。一般情况下，每个运营商的网络设备用于为该运营商的SIM指示的用户身份提供服务。该运营商的网络设备即为该运营商的SIM指示的用户身份对应的网络设备。
紧急呼叫业务可以使用任何当时可用的网络。对于紧急呼叫业务，不论身份信息是否为某个运营商的SIM指示的用户身份，该运营商的网络设备均能够提供紧急呼叫业务的服务。
图9是本申请实施例提供的一种终端设备的示意性结构图。
终端设备800连接第一用户识别模块SIM和第二SIM。对于紧急呼叫业务，第一SIM的优先级高于第二SIM。
终端设备800包括搜索模块810、收发模块820。
搜索模块810用于，在所述第一SIM未驻留在支持所述紧急呼叫业务的网络的情况下，根据所述第二SIM的优选频点中进行搜索，以确定接入频点，所述接入频点对应的网络支持所述紧急呼叫业务。
收发模块820用于，基于所述接入频点，向网络设备发送连接请求，以进行所述紧急呼叫业务。
可选地，搜索模块810用于，根据所述第一SIM对应的至少一个频点和所述第二SIM的优选频点进行搜索，以确定所述接入频点。
可选地，搜索模块810用于，在所述第一SIM的历史频点中进行搜索，所述第一SIM的历史频点包括确定所述接入频点之前所述第一SIM使用的至少一个频点，所述第一SIM对应的至少一个频点信息包括所述第一SIM的历史频点。
搜索模块810用于，当第一SIM的历史频点中不存在所述接入频点时，在所述第二SIM的优选频点中进行搜索，以确定所述接入频点。
可选地，搜索模块810用于，当第二SIM的优选频点中不存在所述接入频点时，在第一支持频点中进行搜索，以确定所述接入频点，所述第一SIM对应的至少一个频点信息包括所述第一支持频点，所述第一支持频点包括所述第一SIM支持的多个频点。
可选地，所述第二SIM的优选频点包括所述第二SIM当前在网络中驻留所使用的频点。
可选地，所述第一SIM为用户选择用于进行紧急呼叫的SIM。
可选地，收发模块820用于，以所述第一SIM向所述网络设备发送连接请求。
图10是本申请实施例提供的一种终端设备的示意性结构图。
终端设备900连接第一用户识别模块SIM和第二SIM。对于紧急呼叫业务，第一SIM的优先级高于第二SIM。
终端设备900包括处理器910和通信接口920。
处理器910用于，在所述第一SIM未驻留在支持所述紧急呼叫业务的网络的情况下，根据所述第二SIM的优选频点中进行搜索，以确定接入频点，所述接入频点对应的网络支持所述紧急呼叫业务。
通信接口920用于，基于所述接入频点，向网络设备发送连接请求，以进行所述紧急呼叫业务。
可选地，处理器910用于，根据所述第一SIM对应的至少一个频点和所述第二SIM的优选频点进行搜索，以确定所述接入频点。
可选地，处理器910用于，在所述第一SIM的历史频点中进行搜索，所述第一SIM的历史频点包括确定所述接入频点之前所述第一SIM使用的至少一个频点，所述第一SIM对应的至少一个频点信息包括所述第一SIM的历史频点。
处理器910用于，当第一SIM的历史频点中不存在所述接入频点时，在所述第二SIM的优选频点中进行搜索，以确定所述接入频点。
可选地，处理器910用于，当第二SIM的优选频点中不存在所述接入频点时，在第一支持频点中进行搜索，以确定所述接入频点，所述第一SIM对应的至少一个频点信息包括所述第一支持频点，所述第一支持频点包括所述第一SIM支持的多个频点。
可选地，所述第二SIM的优选频点包括所述第二SIM当前在网络中驻留所使用的频点。
可选地，所述第一SIM为用户选择用于进行紧急呼叫的SIM。
可选地，通信接口920用于，以所述第一SIM向所述网络设备发送连接请求。
图11是本申请实施例提供的一种通信装置的示意性结构图。
通信装置2000包括接收模块2010和发送模块2020。
接收模块2010用于，接收第一用户身份的请求信息，所述请求信息用于请求进行紧急呼叫业务，所述第一用户身份未驻留在支持所述紧急呼叫业务的网络。
发送模块2020用于，当第二用户身份驻留在支持所述紧急呼叫业务的网络时，基于接入频点，以所述第一用户身份向网络设备发送连接请求，以进行所述紧急呼叫业务，所述接入频点为所述第二用户身份对应的频点。
可选地，通信装置2000包括处理模块，用于根据所述第二用户身份对应的至少一个频点进行搜索，以确定所述接入频点。
可选地，处理模块用于，在所述第一用户身份对应的至少一个频点和所述第二用户身份对应的的至少一个频点中进行搜索，以确定所述接入频点。
可选地，所述接入频点为所述第二用户身份在网络中驻留所使用的频点。
可选地，所述网络设备与所述第二用户身份对应。
可选地，所述第二用户身份是根据用户识别模块SIM确定的。
图12是本申请实施例提供的一种通信装置的示意性结构图。
通信装置3000包括处理器3010和通信接口3020。
通信接口3020用于通信装置3000与其他装置进行信息交互，当程序指令在处理器3010中执行时，使得通信装置3000执行如前文所述的方法。
本申请实施例还提供一种通信系统，其包括前述的终端设备和网络设备。网络设备用于接收连接请求。
本申请实施例还提供一种通信系统，其包括前述的通信装置和网络设备。
本申请实施例还提供一种计算机程序存储介质，其特征在于，所述计算机程序存储介质具有程序指令，当所述程序指令被执行时，使得前文中的方法被执行。
本申请实施例还提供一种芯片系统，其特征在于，所述芯片系统包括至少一个处理器，当程序指令在所述至少一个处理器中执行时，使得前文中的方法被执行。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
本申请实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示单独存在A、同时存在A和B、单独存在B的情况。其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项”及其类似表达，是指的这些项中的任意组合，包括单项或复数项的任意组合。例如，a，b和c中的至少一项可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖 在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (15)

  1. 一种通信方法，其特征在于，所述方法包括：
    接收第一用户身份的请求信息，所述请求信息用于请求进行紧急呼叫业务，所述第一用户身份未驻留在支持所述紧急呼叫业务的网络；
    当第二用户身份驻留在支持所述紧急呼叫业务的网络时，基于接入频点，以所述第一用户身份向网络设备发送连接请求，以进行所述紧急呼叫业务，所述接入频点为所述第二用户身份对应的频点。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：根据所述第二用户身份对应的至少一个频点进行搜索，以确定所述接入频点。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述第二用户身份对应的至少一个频点进行搜索，包括：在所述第一用户身份对应的至少一个频点和所述第二用户身份对应的的至少一个频点中进行搜索，以确定所述接入频点。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述接入频点为所述第二用户身份在网络中驻留所使用的频点。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述网络设备与所述第二用户身份对应。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述第二用户身份是根据用户识别模块SIM确定的。
  7. 一种通信装置，其特征在于，包括：接收模块、发送模块；
    所述接收模块用于，接收第一用户身份的请求信息，所述请求信息用于请求进行紧急呼叫业务，所述第一用户身份未驻留在支持所述紧急呼叫业务的网络；
    所述发送模块用于，基于接入频点，以所述第一用户身份向网络设备发送连接请求，以进行所述紧急呼叫业务，所述接入频点为第二用户身份对应的频点。
  8. 根据权利要求7所述的装置，其特征在于，还包括处理模块；
    所述处理模块用于，根据所述第二用户身份对应的至少一个频点进行搜索，以确定所述接入频点。
  9. 根据权利要求8所述的装置，其特征在于，所述处理模块用于，在所述第一用户身份对应的至少一个频点和所述第二用户身份对应的的至少一个频点中进行搜索，以确定所述接入频点。
  10. 根据权利要求7-9中任一项所述的装置，其特征在于，所述接入频点为所述第二用户身份在网络中驻留所使用的频点。
  11. 根据权利要求7-10中任一项所述的装置，其特征在于，所述网络设备与所述第二用户身份对应。
  12. 根据权利要求7-11中任一项所述的装置，其特征在于，所述第二用户身份是根据用户识别模块SIM确定的。
  13. 一种通信装置，其特征在于，包括至少一个处理器和通信接口，所述通信接口用于所述终端设备与其他通信装置进行信息交互，当程序指令在所述至少一个处理器中执行时，使得所述终端设备执行如权利要求1至7中任一项所述的方法。
  14. 一种计算机程序存储介质，其特征在于，所述计算机程序存储介质具有程序指令，当所述程序指令被执行时，使得如权利要求1至6中任一项所述的方法被执行。
  15. 一种芯片，其特征在于，所述芯片包括至少一个处理器，当程序指令被所述至少一个处理器中执行时，使得如权利要求1至6中任一项所述的方法被执行。
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