WO2021042310A1 - 一种通信系统切换方法及通信装置 - Google Patents

一种通信系统切换方法及通信装置 Download PDF

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Publication number
WO2021042310A1
WO2021042310A1 PCT/CN2019/104456 CN2019104456W WO2021042310A1 WO 2021042310 A1 WO2021042310 A1 WO 2021042310A1 CN 2019104456 W CN2019104456 W CN 2019104456W WO 2021042310 A1 WO2021042310 A1 WO 2021042310A1
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WO
WIPO (PCT)
Prior art keywords
terminal
cell
information
network device
bwp
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Application number
PCT/CN2019/104456
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English (en)
French (fr)
Inventor
肖洁华
李新县
唐浩
王轶
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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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980098071.0A priority Critical patent/CN114041317A/zh
Priority to PCT/CN2019/104456 priority patent/WO2021042310A1/zh
Publication of WO2021042310A1 publication Critical patent/WO2021042310A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the embodiments of the present application relate to the communication field, and in particular, to a communication system switching method and communication device.
  • the user identification card in the terminal can be used to complete identity recognition.
  • a subscriber identity module (SIM) or a universal subscriber identity module (USIM) can be used to access the communication system.
  • the terminal can support multiple SIM cards, so that different SIM cards can be used to access different communication systems.
  • the terminal supports two SIM cards, the terminal may access the SIM card by using a first LTE (long term evolution, LTE) communication system using the second SIM Access fifth generation (5 th generation, 5G) communication system system.
  • LTE long term evolution
  • 5G fifth generation
  • the terminal can autonomously release the radio resource control (radio resource control) with the 5G communication system.
  • RRC resource control
  • the 5G communication system when the terminal is disconnected from the 5G communication system, the 5G communication system will continue to page the terminal, resulting in a waste of paging resources. Or, the 5G communication system will still consider the terminal when scheduling, resulting in inaccurate scheduling information and also affecting the communication performance of the 5G communication system.
  • the embodiments of the present application provide a communication system switching method and communication device, which can reduce the impact on the communication performance of the communication system when the terminal switches the SIM card to a certain extent.
  • a communication system handover method including: a terminal receives first information from a first network device, the first information includes a first parameter for the terminal to communicate with the first network device on a first cell, and A parameter indicates that the terminal communicates on the second cell; the first cell corresponds to the first user identification card of the terminal, and the second cell corresponds to the second user identification card of the terminal; the terminal communicates with the second network device on the second cell Communication.
  • the first network device in the communication system can instruct the terminal to switch to the communication corresponding to another second user identification card through the first information
  • the system uses the second communication system registered with the second user identification card to communicate with the second network device in the second communication system.
  • the first network device and the second network device may be the same network device or different network devices. It can be seen that the network side and the terminal side have unified the behavior of the terminal switching the user identification card corresponding to the communication system, and the network side can learn the behavior of the terminal switching the user identification card corresponding to the communication system. When the terminal switches the user identification card, it disconnects from the first communication system.
  • the first communication system can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid the waste of resources.
  • the method provided by the embodiment of this application can reduce the communication of the terminal when switching the SIM card to a certain extent. The influence caused by the communication performance of the system.
  • the first parameter includes: information of one or more first bandwidth part BWPs activated on the first cell.
  • the network device can indicate the activated BWP through the first parameter.
  • the terminal On the activated BWP, the terminal can communicate with the second cell, and can control the behavior of the terminal to switch the communication system corresponding to the user identification card.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid the waste of resources caused by this.
  • the first parameter indicates that the BWP configured on the second cell is activated on one or more time units.
  • the network device may indicate the PWP activation mode through the first parameter, that is, at which time unit there is an activated BWP on the second cell.
  • the terminal can communicate with the second cell, and can control the terminal's behavior of switching the communication system corresponding to the subscriber identification card.
  • the network device can suspend paging The terminal may suspend statistics on the status of the terminal to avoid waste of resources caused thereby.
  • the first parameter includes a first bit sequence of length M and/or a second bit sequence of length M; where the first bit sequence corresponds to N time units, and one of the first bit sequence The bit is used to indicate that the BWP configured on the first cell is activated on one or more of the N time units, and M is less than or equal to N; the second bit sequence corresponds to N time units, one of the second bit sequence The bit is used to indicate that the BWP configured on the second cell is activated on one or more of the N time units.
  • the BWP activated on the first cell and/or the BWP activated on the second cell can be indicated by the bit sequence.
  • the terminal On the BWP activated by the first cell, the terminal can communicate with the first cell.
  • the terminal On the BWP activated by the second cell, the terminal can communicate with the second cell.
  • the first parameter can control the terminal's behavior of switching the communication system corresponding to the subscriber identification card.
  • the network device can suspend searching. Call the terminal or suspend the status statistics of the terminal to avoid the waste of resources caused by this.
  • the first parameter indicates the transceiver capability of the terminal on the first cell, and the transceiver capability of the terminal on the first cell is lower than the maximum transceiver capability supported by the terminal.
  • the first parameter may also be used to indicate the transceiver capability of the terminal on the first cell.
  • the first user identification card of the terminal is supported. Share the receiving channel or sending channel of the terminal with the second subscriber identification card, and support the terminal to communicate in the first cell and the second cell at the same time.
  • the behavior of the terminal to switch the communication system corresponding to the user identification card can be controlled.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal to avoid waste of resources. .
  • the method further includes: sending second information to the first network device; the second information is used to indicate the maximum transceiver capability supported by the terminal and the terminal's transceiver sharing capability.
  • the maximum transmission and reception capability of the terminal and the transmission and reception sharing capability of the terminal can also be indicated through the first parameter, so that the terminal can be instructed to share the transmission and reception channel or switch the transmission and reception channel according to the first parameter, and the terminal can be controlled to switch the user identification card correspondence.
  • the behavior of the communication system can also be indicated through the first parameter, so that the terminal can be instructed to share the transmission and reception channel or switch the transmission and reception channel according to the first parameter, and the terminal can be controlled to switch the user identification card correspondence.
  • the method further includes: the terminal sends third information to the first network device; the third information is used to request the first information.
  • the third information further includes a first duration, and the first duration is a duration for the terminal to request communication in the second cell.
  • the method further includes: acquiring a second duration, where the second duration is a duration during which the terminal is allowed to communicate in the second cell.
  • the terminal as the execution subject of the method. It can be understood that the method may also be executed by a component of the terminal (for example, a processor, a chip, or a chip system, etc.).
  • a communication system handover method including: a first network device generates first information, the first information includes a first parameter for a terminal to communicate with the first network device on a first cell, and the first parameter indicates The terminal communicates on the second cell; the first cell corresponds to the first user identification card of the terminal, and the second cell corresponds to the second user identification card of the terminal.
  • the network device may also send the first information to the terminal.
  • the first parameter includes: information of one or more first bandwidth part BWPs activated on the first cell.
  • the first parameter indicates that the BWP configured on the second cell is activated on one or more time units.
  • the first parameter includes a first bit sequence of length M and/or a second bit sequence of length M; where the first bit sequence corresponds to N time units, and one of the first bit sequence The bit is used to indicate that the BWP configured on the first cell is activated on one or more of the N time units, and M is less than or equal to N; the second bit sequence corresponds to N time units, one of the second bit sequence The bit is used to indicate that the BWP configured on the second cell is activated on one or more of the N time units.
  • the first parameter indicates the transceiver capability of the terminal on the first cell, and the transceiver capability of the terminal on the first cell is lower than the maximum transceiver capability supported by the terminal.
  • the method further includes: receiving second information from the terminal; the second information is used to indicate the maximum transceiver capability supported by the terminal and the terminal's transceiver sharing capability.
  • the method further includes: receiving third information from the terminal; the third information is used to request the first information.
  • the third information further includes a first duration, and the first duration is a duration for the terminal to request communication in the second cell.
  • the method further includes: sending information of a second duration to the terminal, where the second duration is the duration during which the terminal is allowed to communicate in the second cell.
  • the foregoing description of the method only takes the first network device as the execution subject of the method. It can be understood that the method may also be executed by a component (such as a processor, a chip, or a chip system, etc.) of the first network device.
  • a component such as a processor, a chip, or a chip system, etc.
  • an embodiment of the present application provides a communication device that can implement the foregoing first aspect or any one of the possible implementation methods of the first aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the device may be a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the foregoing method.
  • an embodiment of the present application provides a communication device, which can implement the foregoing second aspect or the method in any possible implementation manner of the second aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the apparatus may be, for example, a network device (such as a base station), or a chip, a chip system, or a processor that can support the network device to implement the foregoing method.
  • the device may be a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the foregoing method.
  • the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor,
  • the device implements the foregoing first aspect or the method described in any one of the possible implementation manners of the first aspect.
  • the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor,
  • the device implements the foregoing second aspect or the method described in any possible implementation manner of the second aspect.
  • the present application provides a storage medium on which a computer program or instruction is stored.
  • the computer program or instruction executes the first aspect or any one of the possible implementation manners of the first aspect. The method described.
  • the present application provides a storage medium on which a computer program or instruction is stored.
  • the computer program or instruction When the computer program or instruction is executed, the computer executes the second aspect or any one of the possible implementation manners of the second aspect. The method described.
  • an embodiment of the present application provides a communication system, including: the device described in the third aspect, and/or the device described in the fourth aspect.
  • an embodiment of the present application provides a communication system, including: the device according to the fifth aspect, and/or the device according to the sixth aspect.
  • FIG. 1 is an architecture diagram of a communication system to which the embodiment provided by this application is applicable;
  • FIGS. 2a to 2c are schematic diagrams of several possible terminal radio frequency channels provided by embodiments of this application.
  • FIG. 3 is a schematic diagram of a possible carrier aggregation (CA) scenario provided by an embodiment of this application;
  • FIG. 4 is a schematic diagram of a possible dual connectivity (DC) scenario provided by an embodiment of the application.
  • DC dual connectivity
  • 5a and 5b are structural block diagrams of a communication device provided by an embodiment of this application.
  • FIG. 6 is a schematic flowchart of a communication system handover method provided by an embodiment of this application.
  • FIG. 7 is a schematic flowchart of another communication system handover method provided by an embodiment of this application.
  • FIGS 8 to 10 are schematic diagrams of several possible cell handovers provided by embodiments of this application.
  • FIG. 11 is another structural block diagram of a communication device provided by an embodiment of the application.
  • Communication fourth generation (4 th generation, 4G) communication system a communication system, 4.5G, 5G communication system, a variety of communication systems integration system, or future evolution system.
  • 4G fourth generation
  • a communication system 4.5G
  • 5G communication system a variety of communication systems integration system, or future evolution system.
  • LTE long-term evolution
  • NR new radio
  • WiFi wireless-fidelity
  • 3GPP 3rd generation partnership project
  • the information in the user identification card can be used as an identity identifier for the terminal to communicate in a certain communication system, and the communication system can identify the terminal according to the information in the user identification card of the terminal.
  • the user identification card can also store or generate a key to encrypt the call, reducing the risk of eavesdropping on the call.
  • the user identification card is mainly used for identity authentication when the terminal accesses the communication network.
  • the embodiment of the present application does not limit the specific form of the user identification card.
  • the user identification card may be a SIM card, a USIM card, a virtual SIM card, or a subsequent evolved identification card.
  • the SIM card, the USIM card, the virtual SIM card, etc. are collectively referred to as the SIM card.
  • the SIM card contains the identification code and secret key of the terminal user, and the communication system can authenticate the terminal user according to the information in the SIM card.
  • the terminal After registering on the network, the terminal can obtain the services provided by the network. After the terminal is registered on the network, the relevant information of the terminal can be saved in the network, so that the network can page to the terminal, and the terminal can also access the network for communication.
  • the search network registration process can include the following steps:
  • the initialization process is used to obtain user identification card information. For example, after the terminal inserts the user identification card, the terminal performs data interaction with the user identification card, the terminal can obtain the information contained in the user identification card, and subsequently can use the information to register to the network.
  • each operator can control the network service of the terminal through the information in the user identification card.
  • PLMN selection is a step when the terminal performs network search and registration in the RRC idle state. For example, the terminal determines the priority of each PLMN according to the PLMN information stored in the subscriber identification card, and can select the PLMN with the highest priority. When the terminal selects PLMN, the network service operator is also determined.
  • the terminal can obtain the PLMN ID after selecting the PLMN. It can be understood that the priority of the PLMN can be determined according to the preset service of the subscriber identification card, the quality of the service signal, etc.
  • Frequency scanning means that the terminal performs frequency scanning to determine a frequency point for communication.
  • Step 4 Cell selection and camping
  • the terminal After selecting the PLMN, the terminal scans the frequency and determines a certain frequency point, and then initiates a cell search process. Then the searched cell is judged. If the PLMN to which the selected cell belongs is the same as the PLMN selected in step 2, the UE will camp on the cell according to the camping criterion and receive the system information of the cell. If the PLMN to which the selected cell belongs is different from the PLMN selected in step 2, the terminal can perform cell search again until it successfully camps on a specific cell (for example, the PLMN it belongs to is the same cell as the PLMN selected in step 2).
  • the terminal After the terminal camps on the cell, it can initiate a registration process and register to the selected PLMN to obtain the required services.
  • the terminal can establish a radio resource control (Radio Resource Control, RRC) connection with the cell where it resides, and enter the RRC connected (connected) state for subsequent data transmission.
  • RRC Radio Resource Control
  • the terminal has completed the search network registration process and can communicate with the network.
  • the terminal may support multiple user identification cards, for example, it may support two user identification cards.
  • the terminal can first be registered in a communication system corresponding to a SIM card after it is powered on.
  • the terminal supports user identification card 1 and user identification card 2.
  • the core network can record the terminal's information Related information, for example, terminal location information, capability information, etc.
  • the core network can also assign IP addresses to the terminals.
  • the terminal can also be registered to the communication system corresponding to the second user identification card.
  • the multiple user identification cards supported by the terminal can distinguish between the primary user identification card and the auxiliary user identification card.
  • the primary user identification card may be the user identification card 1
  • the auxiliary user identification card may be the user identification card 2.
  • the primary user identification card is the user identification card 2 and the auxiliary user identification card is the user identification card 1.
  • the camping cell or the service transmission cell determined by performing PLMN selection and/or cell selection according to the information in the user identification card may be referred to as the cell corresponding to the user identification card. Specifically, it includes the following possibilities:
  • the cell that establishes an RRC connection with the terminal during the network search and registration process can be referred to as the cell corresponding to the subscriber identity card.
  • the terminal can use the network information in the user identification card to register on the corresponding network.
  • an RRC connection can be established on a certain cell.
  • the cell that establishes the RRC connection with the terminal may be referred to as the cell corresponding to the subscriber identity card.
  • the cell or cell where the terminal performs data transmission may be referred to as the cell corresponding to the subscriber identification card.
  • the terminal can change the cell that conducts the business (for example, the cell that performs data transmission with the terminal) or the cell where it resides according to the needs of the business or the status of the position movement.
  • These cells can all become the cells corresponding to the subscriber identification card.
  • the cell in which the terminal is performing services is in the RRC connected state, and the cell where it resides is in the RRC idle state.
  • the SIM card 1 of the terminal is a Shanghai Mobile 4G card
  • the SIM card 2 is a Shanghai Unicom 3G card.
  • the SIM card 1 contains various PLMN information corresponding to the 4G network of Shanghai Mobile.
  • the terminal can perform PLMN selection and cell selection according to the information in the SIM card 1. Assuming that the user of the terminal is in the Jinqiao area of Shanghai, the result of the PLMN selection is a mobile 4G PLMN, and the result of the cell selection is the cell 1 on a base station 1 in the Jinqiao area.
  • the terminal can initiate registration on cell 1 according to the user identity information in the SIM card 1.
  • the registration process needs to establish an RRC connection on the cell 1.
  • the cell 1 can be referred to as the cell corresponding to the SIM card 1.
  • cell 1 After registration, if the terminal has no business requirements, it can disconnect the RRC connection with cell 1 and enter the RRC idle state, but it can still stay on cell 1 and monitor the system information sent on cell 1. At this time, cell 1 can also It is called the cell corresponding to SIM card 1.
  • the terminal has no business requirements but its geographic location changes, for example, if the user moves to the Lujiazui area, the result of cell selection/reselection at this time is cell 2 on the Lujiazui base station 2.
  • the terminal can camp on the cell 2 to monitor the system information of the cell (the terminal is in the RRC idle state at this time), then the cell 2 can also be referred to as the cell corresponding to the SIM card 1.
  • cell 2 can be referred to as the cell corresponding to SIM card 1.
  • Radio resource control radio resource control
  • the RRC state of the terminal may be RRC idle state (idle state) or RRC connected state (connected state).
  • the RRC state of the terminal can be the RRC idle state, the RRC connected state, or the RRC inactive state.
  • the terminal when a terminal establishes an RRC connection with a network device, the terminal can be in the RRC connected state or the RRC inactive state. When the terminal does not establish an RRC connection with the network device, the terminal is in the RRC idle state.
  • the terminal When the terminal is in the inactive state, the terminal can move within the radio access network-based notification area (RNA), and the core network will maintain the CM (connection management)-connected of the terminal. It is understandable that the core network considers that the terminal is in a connected state and will retain the RRC configuration information of the terminal.
  • RNA radio access network-based notification area
  • the base station can indicate an RNA area.
  • the terminal's activities in the RNA area do not need to notify the network, but an RNA update (update) is required if the terminal exceeds the RNA area.
  • the BWP is a group of continuous RB resources on the carrier, and the BWP can be configured for the terminal for uplink or downlink transmission.
  • One serving cell in the new radio (NR) Rel-15 can configure up to 4 BWPs for one terminal.
  • the BWP used for the terminal to receive data is called a downlink BWP
  • the BWP used for the terminal to send data is called an uplink BWP.
  • the BWP used for the terminal to send data is called an uplink BWP.
  • only one BWP can be activated at the same time, and the terminal transmits and receives data on the activated BWP.
  • Fig. 1 shows a schematic diagram of a communication system to which the technical solution provided by the present application is applicable.
  • the communication system may include network equipment and terminals. Different user identification cards on the terminal 200 can support the terminal to register in different communication systems. After the terminal is registered in a different communication system, it can communicate with different network devices, for example, to send and receive data on the service cell of the network device. .
  • the terminal 200 supports two SIM cards, SIM card 1 and SIM card 2.
  • SIM card 1 and SIM card 2 can be SIM cards provided by the same operator, or SIM cards provided by different operators.
  • SIM card 1 is a SIM card that supports LTE FDD provided by operator A
  • SIM card 2 is A 5G-enabled SIM card provided by carrier B.
  • the terminal can use the information in the SIM card 1 to register to the first communication system, the network device 101 can be a network device in the first communication system, and the terminal can access the cell of the network device 101 after being registered in the first communication system.
  • the terminal can also use the information in the SIM card 2 to register to the second communication system.
  • the network device 102 can be a network device in the second communication system. After being registered in the second communication system, the terminal can access the cell of the network device 102.
  • FIG. 1 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the technical solutions provided in this application.
  • Different SIM cards in the terminal 200 can also support the terminal to register in the same communication system.
  • the terminal uses the information in the SIM card 1 and the SIM card 2 to register to the first communication system.
  • the network device can be any device with a wireless transceiver function. Including but not limited to: evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional NodeB), base station in NR (gNodeB or gNB) or transmission receiving point/transmission reception point (TRP), follow-up Evolved base stations, access nodes in WiFi systems, wireless relay nodes, wireless backhaul nodes, etc.
  • the base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support networks of the same technology mentioned above, or networks of different technologies mentioned above.
  • the base station can contain one or more co-site or non-co-site TRPs.
  • the network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.
  • the network device can also be a server, a wearable device, a machine communication device, or a vehicle-mounted device, etc.
  • the following description takes the network device as a base station as an example.
  • the multiple network devices may be base stations of the same type, or base stations of different types.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • the terminal device can communicate with multiple base stations of different technologies.
  • the terminal device can communicate with a base station that supports an LTE network, can also communicate with a base station that supports a 5G network, and can also support communication with a base station of an LTE network and a base station of a 5G network. Double connection.
  • a terminal is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, etc.) And satellite class).
  • the terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control (industrial control) Control), in-vehicle terminal equipment, unmanned driving (self-driving) terminal, assisted driving terminal, remote medical (remote medical) terminal, smart grid (smart grid) terminal, transportation safety ( Terminals in transportation safety, terminals in smart cities, terminals in smart homes, wearable terminal devices, terminals in machine communication, and so on.
  • the embodiments of this application do not limit the application scenarios.
  • Terminals can sometimes be referred to as terminal equipment, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile Equipment, UE terminal equipment, terminal equipment, wireless communication equipment, machine terminal, UE agent or UE device, etc.
  • the terminal can be fixed or mobile.
  • the terminal may also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • MTC machine type communication
  • the terminal device of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit built into a vehicle as one or more components or units.
  • the vehicle passes through the built-in vehicle-mounted module, vehicle-mounted module, On-board components, on-board chips, or on-board units can implement the method of the present application. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution-vehicle (LTE-V) technology, and vehicle-to-vehicle (vehicle-to-vehicle). , V2V) and so on.
  • V2X vehicle to everything
  • LTE-V long term evolution-vehicle
  • V2V vehicle-to-vehicle
  • V2V vehicle-to-vehicle
  • FIGS 2a to 2c show schematic diagrams of the structure of a terminal supporting two subscriber identification cards.
  • one user identification card can correspond to one or more sets of radio frequency circuits.
  • the radio frequency circuit is connected to the antenna.
  • the terminal can receive signals through an antenna connected to the radio frequency circuit, and the receiving part of the radio frequency circuit and the corresponding antenna form a receiving channel.
  • the terminal can also transmit signals through an antenna connected to the radio frequency circuit, and the transmitting part of the radio frequency circuit and the corresponding antenna form a transmission channel.
  • SIM card 1 and SIM card 2 in the terminal share a receiving channel, and SIM card 1 and SIM card 2 share the same transmission channel.
  • This structure can also be called single Rx/single Tx. Structure; refer to 2b, SIM card 1 and SIM card 2 can correspond to their independent receiving channels, but SIM card 1 and SIM card 2 share a transmission channel.
  • This structure can also be called dual Rx/single Tx ) Structure; referring to Figure 2c, one of the two sending channels is used independently by the SIM card, and the other is shared by each SIM card.
  • Tx1 and Tx2 are independent transmission channels of each SIM, and Tx1 can also be shared with SIM card 2.
  • SIM card 2 can use both Tx1 and Tx2 transmission channels at the same time; when SIM card 1 uses Tx1, SIM card 2 cannot use Tx1 for transmission.
  • the structure shown in Figure 2c may also be referred to as a dual-receiving and dual-transmit (dual Rx/dual Tx) structure.
  • the communication system shown in Figure 1 can support the CA scenario shown in Figure 3.
  • CA is an aggregation of two or more component carriers (CC) to support a larger transmission bandwidth.
  • One CC corresponds to one Community.
  • the network device 100 and the terminal 200 communicate through a primary cell and/or a secondary cell.
  • the primary cell includes the primary carrier, which may be the primary downlink carrier and/or the primary uplink carrier.
  • the secondary cell includes a secondary carrier, which may be a secondary downlink carrier and/or a secondary uplink carrier.
  • the terminal 200 may be located in the coverage area of the primary cell and send data to the network device 100, and the network device 100 may also send data to the terminal 200 through the downlink carrier of the primary cell.
  • the terminal 200 may also be located within the coverage of the secondary cell and send data to the network device through the uplink carrier of the secondary cell, and the network device 100 may also send data to the terminal 200 through the downlink carrier of the secondary cell.
  • the embodiment of the application does not limit the size of the coverage area of the primary cell and the coverage area of the secondary cell.
  • one cell is called the primary cell and the other cell is called the secondary cell.
  • the primary cell and the secondary cell can be In exchange, the names of the primary cell and the secondary cell do not have a limiting effect.
  • the communication system shown in FIG. 1 may also support the DC scenario shown in FIG. 4, that is, at least two carriers used for aggregation are carriers provided by different network devices.
  • the network device 101 may provide a carrier (carrier 1 shown in FIG. 4) for the terminal 200 for communication between the terminal 200 and the network device 101.
  • the network device 102 may provide a carrier (carrier 2 shown in FIG. 4) for the terminal 200 for communication between the terminal 200 and the network device 102.
  • the network device 101 may be a primary node
  • the network device 102 may be a secondary node
  • carrier 1 may be called a primary cell group carrier (or may be called a primary node carrier)
  • carrier 2 may be called a secondary cell group carrier (or may be called a secondary cell group carrier).
  • Node carrier Node carrier
  • the network device 102 may be the primary node
  • the network device 101 may be the secondary node
  • the carrier 2 may be called the primary cell group carrier (or may be called the primary node carrier)
  • the carrier 1 may be called the secondary cell group carrier (or may be called Is the secondary node carrier).
  • the terminal is registered in different communication systems according to different SIM cards.
  • the terminal supports CA or DC between carriers in a communication system for communication.
  • the terminal uses the first SIM card to register in the first communication system.
  • the first communication system configures the terminal with 3.5GHz and 2.1GHz carriers (the two carriers can support CA or DC), and the terminal can pass 3.5GHz Carrier and 2.1G two carriers send and receive data in the first communication system.
  • the terminal uses the second SIM card to register in the second communication system.
  • the second communication system configures a 900MHz carrier for the terminal, and the terminal can send and receive data in the second communication system through the 900MHz carrier.
  • the terminal When a terminal that supports multiple SIM cards communicates with the corresponding SIM card, it may affect the performance of the communication system. For example, the terminal registers in the first communication system according to the information in the first SIM card, and when communicating in the first communication system, due to the needs of the terminal itself, the terminal may disconnect from the network equipment of the first communication system. Connected and suddenly disconnected from the first communication system. While the terminal is disconnected from the first communication system, the first communication system will continue to page the terminal, causing a waste of paging resources of the system, thereby affecting the communication performance of the first communication system and causing the transmission efficiency of the system to decrease. Or the terminal autonomously disconnects from the first communication system, causing the first communication system to misunderstand the state of the terminal, thereby erroneously counting data in the system, leading to waste of communication resources or errors in the communication process.
  • each communication system including one cell is described by taking each communication system including one cell as an example.
  • this application still applies.
  • This application does not limit the number of cells included in a communication system.
  • An embodiment of the application provides a communication system handover method.
  • a terminal receives first information from a first network device.
  • the first information includes the first information that the terminal communicates with the first network device on a first cell.
  • Parameter, the first parameter instructs the terminal to communicate on the second cell.
  • the first cell corresponds to a first user identification card of the terminal
  • the second cell corresponds to a second user identification card of the terminal.
  • the first network device in the communication system can instruct the terminal to switch to the communication corresponding to another second user identification card through the first information
  • the system that is, the second communication system registered with the second user identification card, communicates with the second network device in the second communication system.
  • the first network device and the second network device may be the same network device or different network devices. It can be seen that the network side and the terminal side have unified the behavior of the terminal switching the user identification card corresponding to the communication system, and the network side can learn the behavior of the terminal switching the user identification card corresponding to the communication system. When the terminal switches the user identification card, it disconnects from the first communication system.
  • the first communication system can suspend the paging terminal or make statistics on the status of the terminal, so as to avoid the waste of resources caused thereby. Therefore, the method provided by the embodiment of the present application can reduce the impact on the communication performance of the communication system when the terminal switches the SIM card to a certain extent.
  • the switching of the user identification card in the embodiments of the present application can also be understood as the terminal switching the communication system corresponding to the user identification card, or the transfer of part of the terminal capabilities from one communication system to another communication system.
  • the terminal first registers with the first network according to the information in the first subscriber identification card, and establishes an RRC connection with the first cell.
  • the terminal may also register to the second network according to the information in the second subscriber identification card, and the terminal switching subscriber identification card may be handed over from the first network to the second network, in a cell (for example, the second cell) of the second network.
  • Communication It can also be that part or all of the radio frequency or baseband capabilities are transferred from the first network to the second network.
  • the switching of radio frequency or baseband resources can also be understood as the coordination of capabilities between different communication systems.
  • the terminal described in the embodiment of the present application may be implemented by the communication device 510 in FIG. 5a.
  • Figure 5a shows a schematic diagram of the structure of a device.
  • the device 510 may be a network device, a terminal device, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a chip that supports the terminal device to implement the above method. Or processor, etc.
  • the device can be used to implement the method described in the foregoing method embodiment, and for details, please refer to the description in the foregoing method embodiment.
  • the device 510 may include one or more processors 5101, and the processor 5101 may also be referred to as a processing unit, which may implement certain control functions.
  • the processor 5101 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process The data of the software program.
  • the processor 5101 may also store instructions and/or data 5103, and the instructions and/or data 5103 may be executed by the processor, so that the apparatus 510 executes the above method embodiments. Described method.
  • the processor 5101 may include a transceiver unit for implementing receiving and sending functions.
  • the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces, or interface circuits used to implement the receiving and transmitting functions can be separated or integrated.
  • the foregoing transceiver circuit, interface, or interface circuit can be used for code/data reading and writing, or the foregoing transceiver circuit, interface, or interface circuit can be used for signal transmission or transmission.
  • the device 510 may include a circuit, and the circuit may implement the sending or receiving or communication function in the foregoing method embodiment.
  • the device 510 may include one or more memories 5102, on which instructions 5104 may be stored, and the instructions may be executed on the processor, so that the device 510 executes the foregoing method embodiments. Described method.
  • data may also be stored in the memory.
  • instructions and/or data may also be stored in the processor.
  • the processor and the memory can be provided separately or integrated together. For example, the corresponding relationship described in the foregoing method embodiment may be stored in a memory or in a processor.
  • the device 510 may further include a transceiver 5105 and/or an antenna 5106.
  • the processor 5101 may be referred to as a processing unit, and controls the device 510.
  • the transceiver 5105 may be called a transceiver unit, a transceiver, a transceiver circuit or a transceiver, etc., for implementing the transceiver function.
  • the processor and transceiver described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (ASIC), printed circuit board ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), and P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the device described in the above embodiment may be a network device or a terminal device, but the scope of the device described in this application is not limited to this, and the structure of the device may not be limited by FIG. 5a.
  • the device can be a stand-alone device or can be part of a larger device.
  • the device may be:
  • the IC collection may also include storage components for storing data and/or instructions;
  • ASIC such as a modem
  • Figure 5b provides a schematic structural diagram of a terminal device.
  • the terminal equipment 520 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal to obtain a radio frequency signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. .
  • the radio frequency circuit receives the radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and performs processing on the data. deal with.
  • FIG. 5b only shows a memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present invention.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program.
  • the processor in FIG. 5b integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, which are interconnected by technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data may be built in the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with the transceiving function can be regarded as the transceiving unit 5201 of the terminal device 520
  • the processor with the processing function can be regarded as the processing unit 5202 of the terminal device 520.
  • the terminal device 520 includes a transceiving unit 5201 and a processing unit 5202.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the device for implementing the receiving function in the transceiving unit 5201 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 5201 can be regarded as the sending unit, that is, the transceiving unit 5201 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the foregoing receiving unit and sending unit may be an integrated unit or multiple independent units.
  • the above-mentioned receiving unit and sending unit may be in one geographic location, or may be scattered in multiple geographic locations.
  • the embodiment of the present application provides a communication system switching method. As shown in FIG. 6, the method includes the following steps:
  • the first network device sends first information to the terminal, and the terminal receives the first information; the first information includes the first parameter for the terminal to communicate with the first network device on the first cell, and the first parameter indicates that the terminal is in Communication is performed on the second cell; the first cell corresponds to the first user identification card of the terminal, and the second cell corresponds to the second user identification card of the terminal.
  • the user identification card may be, for example, a SIM card, which stores information for the terminal to perform identity verification.
  • the terminal can use the information in the first user identification card to register with the first communication system, and can communicate in the first communication system.
  • communicating with the first network device on the first cell of the first network device may be sending data to the first network device, or receiving data sent by the first network device.
  • the first cell is a cell corresponding to the first user identification card, that is, the first cell corresponds to the first user identification card of the terminal.
  • the first network device can also instruct the terminal to switch the user identification card through the first information.
  • the terminal can switch to the second communication system registered according to the second user identification card, and the second network device in the second communication system To communicate.
  • communicating with the second network device on the second cell of the second network device may be sending data to the second network device, or receiving data sent by the second network device.
  • the second cell is a cell corresponding to the second user identification card, that is, the second cell corresponds to the second user identification card of the terminal.
  • "communicating" includes receiving system information, or receiving paging messages, or initiating random access, or sending data, or receiving data.
  • the terminal communicates with a second network device on the second cell.
  • the BWP of the first cell that does not perform data transmission and reception is activated by the first parameter.
  • the terminal can communicate with the second network device through the second cell.
  • the first parameter can indicate the time units in which the first cell is activated, and it can also determine which time units the first cell is not activated, and the terminal can pass the second cell on the time units where the first cell is not activated. The cell communicates with the second network device.
  • the first parameter can indicate the time units in which the BWP of the first cell is activated, and it can also determine which time units the BWP of the first cell is not activated, and the time units in which the BWP of the first cell is not activated.
  • the upper terminal can communicate with the second network device through the second cell.
  • the first parameter indicates the transceiver capability of the terminal to communicate on the first cell. When the transceiver capability of the terminal to communicate on the first cell is lower than the maximum transceiver capability of the terminal, the terminal communicates with the first network device through the first cell. At the same time, it can also communicate with the second network device through the second cell.
  • the first parameter in the first information can be configured in one or more of the following three ways:
  • the first network device may configure the BWP on the first cell for the terminal, and the terminal does not receive or send data on the BWP.
  • the BWP may be an uplink BWP or a downlink BWP.
  • the terminal does not send data on the uplink BWP, and the terminal does not receive data on the downlink BWP.
  • the BWP may be called a special BWP (special BWP), an idle BWP, a suspended BWP, or a dormant BWP, etc.
  • special BWP special BWP
  • the embodiment of the present application does not limit the name of the BWP.
  • the special BWP may be a special downlink BWP or a special uplink BWP
  • the idle BWP may be an idle downlink BWP or an idle uplink BWP
  • the suspended BWP may be a suspended downlink BWP or a suspended uplink BWP
  • the dormant BWP may be a dormant downlink BWP or a dormant uplink BWP.
  • the terminal does not receive data on the special downlink BWP; the terminal does not transmit data on the special uplink BWP.
  • the first network device may activate the special BWP configured for the first cell through the first parameter. When the special BWP configured for the first cell is activated, the terminal does not receive or send data on the first cell.
  • the terminal can switch the receiving channel to the communication system registered with the second subscriber identification card, communicate with the second network device of the second communication system, and communicate with the second network device of the second communication system.
  • the cell of the device (that is, the second cell described in the embodiment of the present application) receives data.
  • the terminal does not perform data reception on the first cell.
  • the terminal does not perform one or more of the following on the first cell: monitoring and controlling the physical downlink control channel (PDCCH), receiving the physical downlink shared channel ( Physical downlink shared channel, PDSCH), channel state information (channel state information, CSI) measurement, and system information reception.
  • PDCCH physical downlink control channel
  • PDSCH Physical downlink shared channel
  • channel state information channel state information
  • CSI channel state information
  • the terminal can switch the receiving channel to the communication system registered by the second subscriber identification card, and communicate with the second network device of the second communication system. Data transmission is performed on the cell of the device (that is, the second cell described in the embodiment of the present application).
  • the terminal does not send data on the first cell.
  • the terminal does not send one or more of the following on the first cell: sending physical uplink control channel (PUCCH), sending physical downlink shared channel (physical downlink control channel, PUCCH) upwnlink shared channel, PUSCH).
  • PUCCH physical uplink control channel
  • PUCCH physical downlink shared channel
  • the first parameter may include: information about one or more first BWPs activated on the first cell.
  • the first BWP may be the above-mentioned special BWP (may be a special downlink BWP or a special uplink BWP).
  • the terminal After receiving the first information from the first network device, the terminal can determine that there is an activated first BWP on the first cell based on the first information, and it can also determine that the terminal can switch to the communication system of the second subscriber identification card, and the second communication system
  • the second network device of the second network device communicates, and receives data sent by the second network device on the second cell of the second network device, or sends data to the second network device on the second cell of the second network device.
  • the first network device can indicate the time units in which the second cell is activated, or it can also indicate the time units in which the BWP of the second cell is activated.
  • the terminal may communicate with the second network device on the second cell or the BWP of the second cell.
  • the first parameter indicates a cell activation mode or a BWP activation mode
  • the cell activation mode is used to indicate that the second cell is activated on one or more time units
  • the BWP activation mode is used to indicate the The BWP configured on the second cell is activated in one or more time units.
  • the terminal when the BWP configured on the second cell is activated, the terminal can perform normal data transmission and reception on the BWP, that is, when the BWP configured on the second cell is activated, the terminal can perform normal communication on the BWP For example, monitoring PDCCH, receiving PDSCH, measuring CSI, receiving system information, sending physical uplink shared channel (PUSCH), etc.
  • this BWP configured on the second cell may be called a regular BWP, or a normal BWP, etc., which is different from the above-mentioned special BWP, and the embodiment of the present application does not limit the name of the BWP.
  • the terminal can perform normal data transmission and reception on the activated second cell, such as monitoring PDCCH, receiving PDSCH, measuring CSI, receiving system information, and sending physical uplink shared channel. , PUSCH) and so on.
  • the above cell activation mode or BWP activation mode may be indicated by a bit sequence.
  • the first parameter may include a first bit sequence with a length of M, the first bit sequence indicating the activation mode of the first cell or the BWP activation mode of the first cell.
  • the terminal can reverse the first bit sequence to obtain the bit sequence corresponding to the second cell, and determine the BWP activation mode of the second cell according to the obtained bit sequence, that is, the BWP of the second cell is Which time units are activated.
  • the first bit sequence indicates the activation mode of the first cell.
  • the terminal can reverse the first bit sequence to obtain the bit sequence corresponding to the second cell, and determine the first bit sequence according to the obtained bit sequence.
  • the second cell activation mode that is, on which time units the second cell is activated.
  • the first bit sequence corresponds to N time units, and any bit in the first bit sequence is used to indicate that the BWP configured on the first cell is in one or more of the N time units.
  • M is less than or equal to N.
  • the first bit sequence is 01101, one bit corresponds to one slot, and the first bit sequence corresponds to time slots 1 to 5 one-to-one.
  • the first bit sequence is reversed, and the second bit sequence "10010" is obtained, which corresponds to time slots 1 to 5 one-to-one.
  • a bit of "0" means that the second cell or the BWP configured for the second cell is not activated on the corresponding time slot; a bit of "1" means that the second cell or the BWP configured for the second cell is on the corresponding time slot Activated.
  • the second bit sequence "10010" means: in time slot 1, the second cell or the BWP configured for the second cell is activated, and the terminal can communicate with the BWP configured for the second cell or the second cell in time slot 1.
  • the second network device communicates and transmits and receives data on the second cell.
  • time slot 4 the BWP configured for the second cell is activated, and the terminal can communicate with the second network device through the second cell or the BWP configured for the second cell in time slot 4. Data sending and receiving.
  • the first parameter may also be a sequence of Boolean type, for example, the first sequence is false, true, and true. Among them, False means inactive, and true means active.
  • the first parameter may include a second bit sequence of length M, the second bit sequence corresponds to the N time units, and any bit in the second bit sequence is used to indicate the second bit sequence.
  • the BWP configured on the cell is activated on one or more of the N time units.
  • the second bit sequence is "10001", where each bit corresponds to 2 time slots, and the second bit sequence corresponds to time slots 1-10. Assuming that the bit is "0”, it means that the second cell is not activated or the BWP configured for the second cell is not activated on the corresponding time slot; if the bit is "1", it means that the second cell is activated or is on the corresponding time slot.
  • the BWP configured in the second cell is activated.
  • the second bit sequence "10001" means: On time slot 1 and time slot 2, the second cell is activated or the BWP configured for the second cell is activated, and the terminal can pass the second cell on time slot 1 and time slot 2.
  • the BWP configured in the cell communicates with the second network device, and performs data transmission and reception on the second cell.
  • On time slot 9 and time slot 10 the second cell is activated or the BWP configured for the second cell is activated.
  • the terminal can communicate with the second network device through the BWP configured for the second cell on time slot 9 and time slot 10. Communicate and send and receive data on the second cell.
  • the first parameter includes a first bit sequence with a length of M and a second bit sequence with a length of M.
  • time unit described in the embodiment of the present application may be one or more time domain symbols, one or more time slots, one or more subframes, or one or more radio frames, etc.
  • the lengths of the first bit sequence and the second bit sequence are different.
  • the length of the first bit sequence is M1
  • the bits of the first bit sequence correspond to time units one-to-one.
  • the length of the second bit sequence is M2, and one bit of the second bit sequence corresponds to multiple time units.
  • the second bit sequence corresponds to N2 time units, where M2 ⁇ N2.
  • the first bit sequence includes 4 bits, which correspond to the 4 time units one-to-one.
  • the second bit sequence contains two bits, one of which corresponds to two time units.
  • the length of the time unit corresponding to the first bit sequence and the time unit corresponding to the second bit sequence may be different.
  • the absolute time length of the time unit is different.
  • a time unit corresponding to the first bit sequence is 0.5 ms.
  • One time unit corresponding to the second bit sequence is 1 ms.
  • the number of time units corresponding to the first bit sequence is the same as the number of time units corresponding to the second bit sequence, but the absolute time of the time units corresponding to the two is different due to the different numerology parameters.
  • a time unit corresponding to the first bit sequence is a time slot
  • a time unit corresponding to the second bit sequence is also a time slot.
  • the numerology parameter of the first cell is different from the numerology parameter of the second cell
  • the first The length of the time slot corresponding to the bit sequence is different from the length of the time slot corresponding to the second bit sequence.
  • the numerology parameter of the first cell is 0, and the corresponding subcarrier spacing (SCS) is 15KHz.
  • the numerology parameter When the numerology parameter is 0, one time slot corresponds to 1ms.
  • the numerology parameter of the second cell is 1, and the corresponding SCS is 30KHz.
  • the numerology parameter When the numerology parameter is 1, one time slot corresponds to 0.5 ms.
  • the numerology parameter can be represented by ⁇ .
  • the first parameter may also indicate the transceiver capability of the terminal on the first cell.
  • the first parameter may include the transmitting and receiving parameters of the terminal in the first cell.
  • the receiving capability of the terminal in the first cell is lower than the maximum receiving capability supported by the terminal
  • the first subscriber identification card and the second subscriber identification card that support the terminal can share the receiving channel of the terminal, thereby supporting the terminal in the first cell and Data is simultaneously received on the second cell.
  • the sending capacity of the terminal in the first cell is lower than the maximum sending capacity supported by the terminal
  • the first subscriber identification card and the second subscriber identification card supporting the terminal can share the sending channel of the terminal, thereby supporting the terminal in the first cell and Simultaneously send data on the second cell.
  • the first parameter includes: the transceiver parameter for the terminal to communicate on the first cell; the transceiver parameter indicates the transceiver capability of the terminal on the first cell, and the terminal is on the first cell.
  • the transceiver capability in a cell is lower than the maximum transceiver capability supported by the terminal.
  • the sending and receiving parameters may be sending parameters for the terminal to perform uplink sending on the first cell, and the sending parameters indicate the sending capability of the terminal on the first cell.
  • the transmitting capability of the terminal on the first cell may be the number of transmitting antennas used by the terminal for uplink transmission on the first cell. For example, 3Tx is used to indicate that the number of transmitting antennas is 3, and Tx is for transmitting antennas.
  • the transceiver parameters may be parameters related to the number of uplink transmit antennas in the BWP configuration parameters of the first cell.
  • the transceiver parameters are parameters 1, parameter 2, parameter 3, and parameter 4 in the PUSCH-Config IE one or more.
  • parameter 1 indicates whether to use a codebook-based transmission mode or a non-codebook-based transmission mode, and the parameter 1 may be a txConfig parameter.
  • Parameter 2 indicates that a transmission mode is selected among all and part of incoherent transmission, part of incoherent transmission, or incoherent transmission, and parameter 2 may be a codebookSubset parameter.
  • Parameter 3 represents the maximum order of transmission, and parameter 3 may be a maxRank parameter.
  • Parameter 4 indicates the maximum number of layers for MIMO transmission, and parameter 4 may be the maxMIMO-Layers parameter in PUSCH-ServingCellConfig IE. Among them, the maxMIMO-Layers parameter is related to the maximum number of antennas that the terminal can use.
  • the terminal supports up to 4 antennas for data transmission, wherein the terminal can support up to 4 antennas for data transmission on the first cell of the first communication system (that is, the maximum terminal capability), of which 2 antennas
  • the transmission capability of is derived from the capability sharing with the second communication system, and the terminal supports up to 2 antennas for data transmission on the second cell of the second communication system.
  • the terminal When the terminal only needs to send data to the first network device, it can use 4 antennas for data transmission, then the maxMIMO-Layers parameter can be set to 4; when the terminal needs to send data to the first network device and the second network When the device sends data, the first cell can use 2 antennas for data transmission, then the maxMIMO-Layers parameter on the first cell can be set to 2, and the second cell can also use 2 antennas for data transmission, then maxMIMO on the second cell -Layers parameter can be set to 2.
  • the receiving and sending parameters may also be parameters related to the number of downlink receiving antennas in the BWP configuration parameters, and indicate the receiving capability of the terminal on the first cell.
  • the receiving capability of the terminal on the first cell may be the number of receiving antennas used by the terminal for downlink reception on the first cell.
  • 3Rx may be used to indicate that the number of receiving antennas is 3, where Rx indicates receiving antennas.
  • the transceiver parameter is parameter 5 in PDSCH-Config IE, where parameter 5 represents the maximum number of codewords that can be scheduled for downlink control information (downlink control information, DCI).
  • Parameter 5 may be the maxNrofCodeWordsScheduledByDCI parameter. Among them, when the number of transmission layers of MIMO is greater than a certain threshold, the transmission of multiple codewords can be supported. Exemplarily, when the terminal supports a maximum of 4 layers of MIMO, one DCI may be allowed to schedule 2 codewords, that is, parameter 5 may mean "scheduling 2 codewords".
  • the BWP configuration parameter of the first cell is used to configure the BWP for the first cell, and may be configured by the first network device through an RRC message, MAC CE, or downlink control information (DCI).
  • the BWP involved in the embodiment of the present application may be a downlink BWP or an uplink BWP.
  • the terminal can also determine that it can communicate with the second network device on the second cell in the following three ways:
  • the terminal receives first information from the first network device, and the first parameter in the first information indicates that the first BWP configured for the first cell is activated.
  • the first BWP may be called a special BWP, and may include a special downlink BWP or a special uplink BWP.
  • the terminal does not receive data on the special downlink BWP; the terminal does not transmit data on the special uplink BWP.
  • the terminal may determine to temporarily not perform data transmission on the first cell, including uplink data transmission and/or downlink data reception.
  • the terminal may switch to the second subscriber identification card, and communicate with the second network device on the second cell corresponding to the second subscriber identification card.
  • the terminal receives the first information from the first network device.
  • the first parameter in the first information indicates the activation mode of the second cell or the BWP activation mode of the second cell.
  • the terminal can determine according to the BWP activation mode of the second cell On which time units the BWP configured for the second cell is activated.
  • the terminal can switch to the second subscriber identification card and communicate with the second network device on the second cell corresponding to the second subscriber identification card. Or, determine the time unit in which the second cell is activated according to the activation mode of the second cell.
  • the terminal can switch to the second user identification card and communicate with the second network device on the second cell corresponding to the second user identification card.
  • the first parameter is a first bit sequence with a length of M, indicating the activation mode of the first cell or the BWP activation mode of the first cell.
  • the BWP of only one cell can be activated on the same time unit, that is, on one time unit, either the BWP of the first cell or the BWP of the second cell is activated.
  • only one cell can be activated on the same time unit, that is, on one time unit, either the first cell is activated or the second cell is activated. Therefore, the terminal can reverse the first bit sequence to obtain the second bit sequence.
  • the second bit sequence indicates the activation mode of the second cell or the BWP activation mode of the second cell.
  • the terminal can determine the time unit in which the second cell is activated according to the activation mode of the second cell, or activate according to the BWP of the second cell
  • the mode determines on which time units the BWP configured for the second cell is activated. For example, in time slot 1, the BWP configured for the second cell is activated, and the terminal can switch to the second subscriber identification card and communicate with the second network device on the second cell corresponding to the second subscriber identification card. Or, in time slot 1, when the second cell is activated, the terminal can switch to the second subscriber identification card, and communicate with the second network device on the second cell corresponding to the second subscriber identification card.
  • the first parameter may also be the above-mentioned second bit sequence, and the terminal may directly determine based on the second bit sequence on which time units the BWP configured for the second cell is activated, or on which time units the second cell is Activated.
  • the first parameter is the transceiver parameter for the terminal to communicate on the first cell.
  • the terminal can determine that the first subscriber identification card and the second subscriber identification card share the terminal's sending channel, and support the terminal in the first cell and the second cell At the same time, uplink transmission is performed.
  • the terminal can determine that the first subscriber identification card and the second subscriber identification card share the receiving channel of the terminal to support the terminal in the first cell and the second cell At the same time, downlink reception is performed.
  • the first parameter includes maxMIMO-Layers, indicating that the terminal supports up to 2Tx uplink transmission on the first cell. It is assumed that the terminal supports up to 4Tx transmission. Since 4Tx is greater than 2Tx, the transmission capability indicated by the first parameter is lower than that supported by the terminal. With the maximum sending capacity, the terminal can communicate simultaneously on the first cell and the second cell. Among them, the terminal uses 2Tx for uplink transmission on the first cell, and uses the remaining 2Tx for uplink transmission on the second cell.
  • the first network device and the second network device may be different network devices, and the first cell and the second cell are cells of different network devices.
  • the first network device is a 4G base station
  • the first cell is a 4G cell
  • the second network device is a 5G base station
  • the second cell is a 5G cell.
  • the terminal supports CA or DC between the carriers communicating in the 4G cell, and supports CA or DC between the carriers communicating in the 5G cell.
  • first network device and the second network device may also be the same network device, and the first cell and the second cell are different cells of the same network device.
  • first network device and the second network device both refer to a certain 5G base station, the first cell is the serving cell 1 of the 5G base station, and the second cell is the serving cell 2 of the 5G base station.
  • the terminal supports CA or DC between the carriers communicating on the serving cell 1, and also supports CA or DC between the carriers communicating on the serving cell 2.
  • the communication between the terminal and the second network device on the second cell includes receiving data or sending data
  • the RRC state of the terminal may be the RRC connected state, the RRC inactive state or the RRC idle state.
  • the method shown in FIG. 6 further includes: the terminal sends second information to the first network device; the second information is used to indicate the maximum transceiving capability supported by the terminal and the terminal corresponding to different user identifications.
  • the card's receiving and sharing capabilities are used to indicate the maximum transceiving capability supported by the terminal and the terminal corresponding to different user identifications.
  • the maximum transceiving capability supported by the terminal may be the maximum number of transmitting antennas supported by the terminal, or the maximum number of receiving antennas supported by the terminal.
  • the receiving and sending and sharing capabilities of the terminal corresponding to different user identification cards may be the receiving and sending and sharing capabilities of the terminal corresponding to the first user identification card and/or the receiving and sending sharing capabilities of the terminal corresponding to the second user identification card.
  • the transmitting and receiving sharing capability of the terminal corresponding to the first subscriber identification card may indicate whether the terminal supports sharing of the receiving channel when communicating on the first cell, or whether the terminal supports sharing of the transmitting channel when communicating on the first cell.
  • the transmitting and receiving sharing capability of the terminal corresponding to the second subscriber identity card may indicate whether the terminal supports the sharing of the receiving channel when communicating on the second cell, or whether the terminal supports the sharing of the transmitting channel when communicating on the second cell.
  • the transmitting and receiving sharing capabilities of the terminal corresponding to the first subscriber identification card can also indicate the degree of sharing supported by the terminal when communicating in the first cell, and the transmitting and receiving sharing capabilities of the terminal corresponding to the second subscriber identification card can also indicate that the terminal supports when communicating in the second cell. The degree of sharing.
  • the second information may include a scaling factor, and the number of receiving channels/sending channels supported by the terminal when communicating on the first cell can be determined according to the scaling factor.
  • the second information is used to indicate the sharing capability of the terminal.
  • the scale factor is 50%. Assuming that the terminal supports up to 4Tx transmission on the first cell, it can be determined that the terminal supports 2Tx sharing on the first cell according to the scale factor 50%, that is, the terminal uses 2Tx for transmission on the first cell, and it can also Use 2Tx for transmission on the second cell.
  • the second information may include the number of receiving channels/sending channels that the terminal supports when communicating on the first cell.
  • the parameter used to indicate the sharing capability of the terminal in the second information is 1Tx. Assuming that the terminal supports a maximum of 2Tx transmission on the first cell, the terminal supports 1Tx sharing on the first cell, that is, the terminal uses 1Tx for transmission on the first cell. Send, and at the same time, you can use 1Tx to send on the second cell.
  • the second information may include the MaxNumberTx parameter and the SharedNumberTx parameter.
  • the MaxNumberTx parameter is used to indicate the maximum transmission and reception capability supported by the terminal
  • the SharedNumberTx parameter is used to indicate the transmission and reception sharing capability of the terminal.
  • the parameters corresponding to the first user identification card may include: MaxRx1, MaxTx1, SharedRx1, SharedTx1.
  • MaxRx1 represents the maximum receiving capability supported by the communication system corresponding to the first user identification card.
  • the capabilities supported by the user identification card can be briefly described as the capabilities of the user identification card.
  • MaxTx1 represents the maximum transmission capacity supported by the first user identification card
  • SharedRx1 represents whether the first user identification card supports shared receiving antennas
  • SharedTx1 represents whether the first user identification card supports shared transmitting antennas.
  • SharedRx1, SharedTx1 can be 0 or 1, where 0 indicates that sharing is not supported, and 1 indicates that sharing is supported; or, SharedRx1, SharedTx1 can be false or true, where false indicates that sharing is not supported, and true indicates that sharing is supported.
  • the parameters corresponding to the second user identification card may include: MaxRx2, MaxTx2, SharedRx2, SharedTx2.
  • MaxRx2 represents the maximum receiving capacity supported by the second user identification card
  • MaxTx2 represents the maximum sending capacity supported by the second user identification card
  • SharedRx2 represents whether the second user identification card supports shared receiving antennas
  • SharedTx2 represents whether the second user identification card supports Shared transmit antenna.
  • the parameter description is the same as the first user identification card capability description.
  • MaxTx and MaxRx indicate the largest transmission channel and the largest reception channel that the terminal can support.
  • MaxTx1+MaxTx2 ⁇ MaxTx
  • MaxRx1+MaxRx2 ⁇ MaxRx.
  • Tx2 is exclusively shared by SIM card 2, and the other is shared by SIM card 1.
  • SIM card 2 can only be used when SIM card 1 is not in use.
  • the method shown in FIG. 6 further includes: the terminal sends third information to the first network device; the third information is used to request the first information.
  • the terminal decides to leave the first communication system corresponding to the first user identification card due to its own business requirements, that is, the terminal disconnects from the first communication system and accesses the second communication system corresponding to the second user identification card To communicate.
  • the terminal may send third information to the first network device, requesting to disconnect from the first communication system, access the second communication system, and establish a connection with the second communication system.
  • the first network device may send the first information to the terminal to instruct the terminal to switch to the second communication system and communicate with the second network device on the second cell.
  • the third information further includes a first duration, and the first duration is a duration during which the terminal requests communication in the second cell.
  • the method shown in FIG. 6 further includes: the terminal acquires a second duration, where the second duration is the duration during which the terminal is allowed to communicate in the second cell.
  • the terminal may receive the second duration from the first network device.
  • the first network device may carry the second duration in the first information and send it to the terminal.
  • the terminal may return to the first cell to communicate with the first network device.
  • the so-called returning to the first cell may mean that the terminal re-establishes an RRC connection with the first network device and communicates with the first network device on the first cell.
  • the terminal still maintains the RRC connection with the first cell when communicating with the second cell (or the RRC connection is suspended), and after completing the communication with the second cell, the terminal directly returns to the communication system corresponding to the first cell, Restore the RRC connection and communicate with the first network device on the first cell.
  • the terminal may receive information about the first timer from the first network device, where the first timer is used to limit the time period during which the terminal is allowed to communicate in the second cell.
  • the terminal may start the first timer according to the information of the first timer, and when the first timer expires, the terminal may return to the first cell to communicate with the first network device.
  • the first duration is the duration of communication in the second cell requested by the terminal itself.
  • the duration that the first network device finally allows the terminal to communicate in the second cell may be the same as the duration requested by the terminal, or not. the same. That is, the foregoing first duration and second duration may be the same or different, which is not limited in the embodiment of the present application.
  • the first parameter may further include: information about one or more second BWPs activated on the first cell.
  • the second BWP is a regular BWP, which is different from the above-mentioned special BWP.
  • the terminal can perform normal communication on the first cell through the activated second BWP, for example , Monitor PDCCH, receive PDSCH, measure CSI, receive system information, send PUSCH, etc.
  • the terminal when the second BWP configured for the first cell is activated on a certain time unit, the terminal can be on the first cell through the configuration of the first cell.
  • the second BWP communicates with the first network device.
  • the terminal performs the communication on the first cell.
  • the first parameter indicates that the terminal is supported to use 2Tx for uplink transmission on the first cell, the terminal supports up to 2Tx transmission, the terminal exclusively enjoys 2Tx when communicating on the first cell, and uses 2Tx for uplink transmission on the second cell.
  • the first network device can also instruct the terminal to switch the user identification card through the first information, and the terminal can switch to the second user identification card after receiving the first information, and use the second user identification card to access the second user identification card.
  • the communication system communicates with the second network device in the second communication system.
  • the network side can learn the behavior of the terminal switching the user identification card.
  • the first communication system can suspend the paging terminal to avoid resource waste caused by this;
  • the scheduling can also temporarily ignore the terminal to avoid inaccurate scheduling data. Therefore, the method provided by the embodiment of the present application can reduce the impact on the communication performance of the communication system when the terminal switches the SIM card to a certain extent.
  • the embodiment of the application also provides a communication system switching method.
  • the terminal includes two SIM cards: SIM card 1 and SIM card 2.
  • the terminal can use SIM card 1 and RAN1 to perform For communication, the SIM card 2 can be used to communicate with the RAN2.
  • SIM card 1 is the first subscriber identification card described in the embodiment of this application
  • RAN1 is the first communication system described in the embodiment of this application
  • the network equipment (for example, base station) of RAN1 is the first communication system described in the embodiment of this application.
  • the first network device; SIM card 2 is the second user identification card described in the embodiment of this application
  • RAN2 is the second communication system described in the embodiment of this application
  • the network device (for example, base station) of RAN2 is the embodiment of this application
  • the second network device includes the following steps:
  • the terminal uses SIM card 1 to communicate with RAN1.
  • the terminal establishes an RRC connection with RAN1 and enters the RRC connected state.
  • the terminal may receive data sent by the network equipment of RAN1 on the first cell, and may also send data to the network equipment of RAN1 on the first cell.
  • the first cell is a cell corresponding to RAN1, and the network equipment of RAN1 provides coverage services for the first cell.
  • the terminal sends a radio frequency switching request to the network equipment of RAN1, where the request includes the communication duration ⁇ T1 requested by the terminal.
  • the terminal when it needs to send and receive data in the second cell corresponding to the SIM card 2, it can send a radio frequency switching request to the network device of the RAN1 to request to switch to the communication system corresponding to the SIM card 2.
  • the second cell is a cell corresponding to RAN2, and the network equipment of RAN2 provides coverage services for the second cell.
  • the radio frequency handover request may be the third information described in the embodiment of this application
  • the communication duration ⁇ T1 may be the first duration described in the embodiment of this application, that is, the duration of the terminal requesting communication in the second cell.
  • the radio frequency switching request may be carried in an RRC message.
  • the network device of RAN1 sends handover instruction information to the terminal, which indicates that the terminal communicates with the network device of RAN2 on the second cell.
  • the switching instruction information may be the first information described in the embodiment of the present application.
  • the network equipment of RAN1 can instruct the terminal to switch from the first cell corresponding to SIM card 1 to the second cell corresponding to SIM card 2 for communication in the following three ways, as follows:
  • the terminal is instructed to switch from the first cell corresponding to SIM card 1 to the second cell corresponding to SIM card 2 for communication through BWP configuration and BWP handover indication.
  • the first cell corresponding to SIM card 1 is an NR cell (that is, the serving cell of a 5G base station in the NR communication system), and the network equipment of RAN1 configures at least two downlink BWPs for the first cell, one is normal BWP (regular BWP, that is, the first BWP described in this embodiment of the application), and the other is a special BWP (also called idle BWP, suspended BWP, or dormant BWP, the name of the BWP is not limited in the embodiment of this application).
  • normal BWP regular BWP
  • suspended BWP suspended BWP
  • dormant BWP the name of the BWP is not limited in the embodiment of this application.
  • the terminal When the normal BWP is activated, the terminal works on the normal BWP and performs normal communication, for example, monitoring PDCCH, receiving PDSCH, performing CSI measurement, receiving system information, and so on.
  • special BWP special BWP
  • data reception processing is not performed, for example, the terminal does not monitor PDCCH, does not receive PDSCH, does not perform CSI measurement, does not receive system information, and so on.
  • the BWP handover indication may be implemented by one of the following: RRC signaling indication, DCI indication, timer-based BWP handover, or BWP handover triggered by the MAC layer process.
  • the handover indication information may include the information of the activated special BWP.
  • the terminal determines that the special BWP configured for the first cell is activated. The terminal does not perform data reception processing on the first cell and can be handed over. Communicate with the network equipment of RAN2 on the second cell corresponding to SIM card 2.
  • the handover instruction information includes information about the activated normal BWP, the terminal performs normal communication on the first cell.
  • BWP1 is a normal BWP
  • BWP2 is a special BWP.
  • the terminal switches to the SIM card 2 and communicates with the network equipment of RAN2 on the second cell.
  • BWP1 is activated before time T1.
  • time T1 to time T2 BWP2 configured for the first cell is activated, and the terminal communicates with the network equipment of RAN2 on the second cell, for example, receiving RAN2 Paging of your network equipment.
  • BWP1 is activated.
  • the BWP activation mode is used to instruct the terminal to switch from the first cell corresponding to SIM card 1 to the second cell corresponding to SIM card 2 for communication.
  • the BWP activation mode may indicate on which time units the BWP configured for the first cell is activated, and may also indicate on which time units the BWP configured for the second cell is activated.
  • the terminal will communicate with the network equipment of RAN1 on the first cell; if the BWP configured for the second cell is activated, the terminal will be in the second cell Communicate with the network equipment of RAN2.
  • the handover indication information indicates a BWP activation mode in which the second cell is activated in one or more time units.
  • the switching information indicates the time division multiplexing (TDM) pattern of the BWP.
  • TDM time division multiplexing
  • the TDM pattern indicates the activation status of the BWP on the first cell and the second cell in the period. For example, ‘1’ means BWP is activated, ‘0’ means BWP is deactivated, or ‘0’ means BWP is activated, and ‘1’ means BWP is deactivated.
  • a bit sequence can be used to indicate the BWP activation mode of the cell. Assuming that a bit sequence corresponds to a time unit, take 4 time slots (slot) as an example.
  • the handover indication information includes 0011, which is used to indicate the BWP activation mode of the first cell. Referring to FIG. 9, in the third and fourth time slots, the BWP configured for the first cell is activated, and the terminal communicates with the network equipment of RAN1 on the first cell.
  • the handover indication information may indicate the BWP activation mode of Q cells.
  • the handover indication information may include a Q-1 bit sequence, and the Q-1 bit sequence indicates the BWP activation mode of Q-1 cells.
  • the bit sequence of other cells can be inverted to obtain the bit sequence of the last cell, thereby determining the BWP activation mode of the last cell.
  • the terminal supports SIM card 1 and SIM card 2
  • the cell corresponding to SIM card 1 is the first cell
  • the cell corresponding to SIM card 2 is the second cell.
  • Table 1 shows the activation patterns of the first cell and the second cell in 5 time units. Specifically, the bit sequence corresponding to the first cell is "11011", and the bit sequence of the second cell is "00100" by negating "11011". That is, on the first time unit, the second time unit, the fourth time unit, and the fifth time unit, the BWP configured for the first cell is activated; the BWP configured for the third cell on the third time unit BWP is activated.
  • the TDM pattern can indicate whether there is an activated BWP (the above-mentioned conventional BWP) on a certain cell, and can indicate which BWP is specifically activated according to the BWP activation mechanism.
  • the network device indicates the first active BWP on the cell through the (firstActiveBWP) in the RRC message, and subsequently can perform BWP handover through RRC configuration, DCI, BWP timer, and MAC layer control.
  • the network side can control the receiving and sending parameters (for example, receiving parameters or sending parameters) of the terminal on different SIM cards to instruct the terminal to communicate on the cells corresponding to the different SIM cards.
  • the handover indication information may include the transmitting and receiving parameters of the terminal on the first cell.
  • the terminal may determine the transmitting and receiving capabilities of the terminal on the first cell according to the transmitting and receiving parameters of the terminal on the first cell, and compare the transmitting and receiving capabilities of the terminal on the first cell.
  • the parameters and the maximum transmission and reception capabilities supported by the terminal determine whether to communicate on the first cell, or to communicate on the first cell and the second cell.
  • the SIM card 1 and the SIM card 2 of the terminal share 2Tx, that is, the two transmission channels of the terminal are shared by the SIM card 1 and the SIM card 2.
  • the terminal may report the maximum transceiving capability supported by the terminal and the transceiving sharing capability of the terminal on the SIM card 1 to the first network device before step 703.
  • the terminal supports 2Tx when communicating on the first cell corresponding to SIM card 1, and 1Tx is shared with other systems. That is, when the terminal only uses SIM card 1, data can be sent through two transmission channels at most in the first cell; when the terminal uses SIM card 1 and SIM card 2, data is sent through one transmission channel in the first cell, and data is sent through one transmission channel in the second cell. The cell sends data through another sending channel.
  • the parameters reported by the terminal to the first network device can be "MaxNumberTx: 2, SharedNumberTx: 1", where “MaxNumberTx: 2” means that the terminal supports 2Tx when communicating on the first cell corresponding to SIM card 1, "SharedNumberTx:1" Indicates that the terminal supports sharing 1Tx with other systems.
  • the terminal may also report other capability parameters to implicitly indicate the transceiver capability of the terminal on the first cell.
  • the terminal can report a parameter indicating the number of multiple-input and multiple-output (MIMO) layers, which can be one or more of the following two parameters: MaxNumberMIMO-LayersCB-PUSCH parameter, maxNumberMIMO-LayersNonCB-PUSCH Parameters, these two parameters can indicate the maximum number of MIMO layers supported by the PUSCH.
  • the two parameters are "2", which means that the terminal supports a maximum of 2Tx transmission on the first cell.
  • the first network device may also indicate the transceiver parameters on the first cell to the terminal through the handover indication information.
  • the first network device may also carry the transceiver parameters on the first cell through the BWP configuration parameters, that is, the aforementioned handover indication information may be the BWP configuration parameters.
  • the following parameters are related to the number of uplink transmit antennas: the txConfig, codebookSubset, and maxRank parameters in the PUSCH-Config IE, or the maxMIMO-Layers parameter in the PUSCH-ServingCellConfigIE.
  • the first network device can indicate the sending parameters of the terminal on the first cell through these parameters. For example, the terminal supports 2Tx on the first cell, that is, the terminal supports a maximum of 2 sending channels to send data on the first cell.
  • the first network device can indicate the receiving parameters of the terminal on the first cell through these parameters.
  • the terminal supports 2Rx on the first cell, that is, the terminal supports a maximum of 2 receiving channels to receive data on the first cell.
  • the parameter related to the number of transmitting antennas in the configuration parameter of BWP1 indicates that the terminal supports 2Tx transmission; the parameter related to the number of receiving antennas in the configuration parameter of BWP2 indicates that the terminal only supports 1Tx transmission.
  • the terminal can support data transmission on both SIM card 1 and SIM card 2. That is, the terminal is in the first cell at time T3 to time T4. Communicate with the network equipment of RAN1 and at the same time communicate with the network equipment of RAN2 on the second cell. It can be seen that the method provided in the embodiment of the present application makes full use of the capabilities of the terminal and improves the performance of the system.
  • the handover instruction information may further include a second duration ⁇ T2, that is, the duration of time during which the terminal is allowed to communicate in the second cell.
  • the second duration can be considered as the duration of communication using the SIM card 2 after the terminal is switched to the SIM card 2. It should be noted that the embodiment of the present application does not limit the second duration ⁇ T2.
  • the second duration ⁇ T2 may be greater than the first duration ⁇ T1, or may be less than or equal to the first duration ⁇ T1.
  • the RAN1 network equipment may be the same or different from the ⁇ T1 requested by the terminal according to the radio frequency handover duration ⁇ T2 indicated by the terminal through the handover indication information, which is not limited in the embodiment of the present application.
  • the terminal communicates with the network device of the RAN2 on the second cell of the communication system registered according to the SIM card 2.
  • the terminal can determine that it can communicate with the network device of RAN2 on the second cell according to the handover instruction information in step 703.
  • the handover indication information indicates that the special BWP configured for the first cell is activated, and the terminal can communicate with the network device of RAN2 on the second cell.
  • the handover indication information indicates that the conventional BWP configured for the first cell is not activated, and the terminal can communicate with the network device of RAN2 on the second cell.
  • the handover indication information indicates the terminal's transceiver capability on the first cell. The maximum transceiver capability supported by the cell terminal.
  • SIM card 1 and SIM card 2 can share the sending channel (or receiving channel), and the terminal can communicate with each other on the second cell.
  • the network equipment of RAN2 communicates with the network equipment of RAN1 on the first cell at the same time.
  • the terminal can also perform radio frequency switching.
  • the so-called radio frequency switching refers to switching the receiving channel and/or the sending channel.
  • the SIM card 1 of the terminal is connected to the radio frequency circuit, and the receiving channel is used to receive data, and the sending channel is used to send data.
  • the SIM card 2 of the terminal is connected to the radio frequency circuit, and the receiving channel is used to receive data, and the sending channel is used to send data.
  • the SIM card 1 and the SIM card 2 of the terminal have independent receiving channels, and the SIM card 1 and the SIM card 2 share the same sending channel.
  • the terminal receives data through the receiving channel formed by the radio frequency circuit 1 and the antenna 1, and sends data through the transmitting channel formed by the radio frequency circuit 1 and the antenna 1.
  • the terminal receives data through the receiving channel formed by the radio frequency circuit 2 and the antenna 2, and transmits data through the transmitting channel formed by the radio frequency circuit 1 and the antenna 1.
  • the SIM card 1 and the SIM card 2 of the terminal have independent receiving channels and independent sending channels.
  • the terminal receives data through the receiving channel formed by the radio frequency circuit 1 and the antenna 1, and sends data through the transmitting channel formed by the radio frequency circuit 1 and the antenna 1.
  • the terminal receives data through the receiving channel formed by the radio frequency circuit 2 and the antenna 2, and transmits data through the transmitting channel formed by the radio frequency circuit 2 and the antenna 2.
  • the terminal can send and receive data on the second cell after radio frequency switching. For example, when the terminal is in an RRC idle state, it can receive a paging message sent by a network device of RAN2.
  • the terminal After the second duration ⁇ T2 is satisfied, the terminal returns to the first cell and communicates with the network device of RAN1.
  • the second duration ⁇ T2 can be controlled in the following ways:
  • the network device of RAN1 sends a BWP switching instruction to the terminal, and the BWP switching instruction includes the information of the regular BWP.
  • the terminal determines that the regular BWP configured for the first cell is activated, and switches from the special BWP to the regular BWP.
  • the terminal can perform normal traffic on the first cell, so the terminal can perform radio frequency handover and return to the first cell to communicate with the network equipment of RAN1.
  • the terminal can start the timer according to the timer information obtained from the network equipment of RAN1. This timer is used to limit the length of time the terminal is allowed to communicate in the second cell. When the timer expires, the terminal performs radio frequency switching and returns to the communication system corresponding to the SIM card 1.
  • the network equipment of RAN1 can indicate the second duration ⁇ T2 to the terminal.
  • a new indicator field can be added to the BWP switching instruction sent to the terminal, and the value filled in the indicator field can be used to indicate the second duration ⁇ T2.
  • the time unit of the second duration ⁇ T2 can be symbols, time slots, subframes, etc., The comparison of the embodiments of this application is not limited.
  • the network side can control the sending or receiving behavior of the multi-SIM card terminal on different SIMs through the switching instruction information (that is, the first information described in the embodiment of this application), and the network side can learn the terminal switching user identification
  • the behavior of the card when the terminal switches the user identification card and disconnects from the communication system corresponding to SIM card 1, the communication system of SIM card 1 can suspend the paging terminal to avoid the resulting waste of resources; the communication system of SIM card 1 is scheduling Yes, you can also ignore the terminal temporarily to avoid inaccurate scheduling data.
  • the method provided in the embodiments of the present application can reduce the impact on the communication performance of the communication system when the terminal switches the SIM card to a certain extent.
  • the device may be a terminal or a component of the terminal (for example, an integrated circuit, a chip, etc.).
  • the device can also be a network device or a component of a network device (for example, an integrated circuit, a chip, etc.).
  • the device may also be another communication unit, which is used to implement the method in the method embodiment of the present application.
  • the device 110 may include: a processing unit 1102 (processing module).
  • processing module processing module
  • it may also include a transceiving unit 1101 (transceiving module) and a storage unit 1103 (storing module).
  • one or more units as shown in Figure 11 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors It may be implemented with a transceiver; or implemented by one or more processors, memories, and transceivers, which is not limited in the embodiment of the present application.
  • the processor, memory, and transceiver can be set separately or integrated.
  • the device has the function of implementing the terminal device described in the embodiment of this application.
  • the device includes a module or unit or means corresponding to the terminal device executing the steps related to the terminal device described in the embodiment of this application.
  • the function Or a unit or means (means) can be implemented by software, or by hardware, or by hardware executing corresponding software, or by a combination of software and hardware.
  • the device has the function of implementing the network device described in the embodiment of this application.
  • the device includes the module or unit or means corresponding to the network device executing the steps related to the network device described in the embodiment of this application.
  • the functions or units or means can be realized by software, or by hardware, or by hardware executing corresponding software, or by a combination of software and hardware.
  • each module in the apparatus 110 in the embodiment of the present application may be used to execute the method described in FIG. 6 or FIG. 7 in the embodiment of the present application.
  • an apparatus 110 may include a processing unit 1102 and a transceiver unit 1101.
  • the transceiver unit 1101 receives first information from the first network device, where the first information includes the first information of the terminal (for example, the apparatus 110) in the first cell to communicate with the first network device.
  • the first information includes the first information of the terminal (for example, the apparatus 110) in the first cell to communicate with the first network device.
  • a parameter, the first parameter instructs the terminal to communicate on the second cell; the first cell corresponds to the first subscriber identification card of the terminal, and the second cell corresponds to the second user of the terminal Recognition card correspondence.
  • the processing unit 1102 may process the first information received by the transceiver unit 1101, and obtain the first parameter therefrom.
  • the transceiver unit 1101 may communicate with a second network device on the second cell.
  • the network side and the terminal side (for example, the above-mentioned device 110) unify the behavior of the terminal (device 110) switching the communication system corresponding to the user identification card, and the network side can learn that the terminal switches the communication system corresponding to the user identification card.
  • Behavior when the terminal switches from the user identification card corresponding to the first communication system to the user identification card corresponding to the second communication system, and disconnects from the first communication system, the first communication system can suspend the paging terminal or suspend the state of the terminal Statistics are used to avoid resource waste caused by this; in short, the method provided in the embodiments of the present application can reduce the impact on the communication performance of the communication system when the terminal switches the SIM card to a certain extent.
  • the first parameter includes: information about one or more first bandwidth part BWPs activated on the first cell.
  • the network device can indicate the activated BWP through the first parameter.
  • the terminal for example, the device 110
  • the network device can communicate with the second cell, and the network device can switch the communication system corresponding to the subscriber identification card by the terminal.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid the waste of resources caused thereby.
  • the first parameter indicates that the BWP configured on the second cell is activated in one or more time units.
  • the network device may indicate the PWP activation mode of the second cell through the first parameter, that is, at which time unit there is an activated BWP on the second cell.
  • the terminal for example, the device 110
  • the network The device can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid resource waste caused by this.
  • the first parameter includes a first bit sequence with a length of M and/or a second bit sequence with a length of M;
  • the first bit sequence corresponds to N time units, and one bit in the first bit sequence is used to indicate one or more times of the BWP configured on the first cell in the N time units Unit is activated, M is less than or equal to N;
  • the second bit sequence corresponds to the N time units, and one bit in the second bit sequence is used to indicate that the BWP configured on the second cell is in the N One or more of the time units are activated.
  • the BWP activated on the first cell and/or the BWP activated on the second cell can be indicated by the bit sequence.
  • the terminal for example, the device 110
  • the terminal can communicate with the first cell.
  • the cell communicates.
  • the terminal can communicate with the second cell.
  • the network device can control the terminal to switch the behavior of the communication system corresponding to the user identification card through the first parameter.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid the waste of resources caused by this.
  • the first parameter indicates the transceiver capability of the terminal on the first cell, and the transceiver capability of the terminal on the first cell is lower than the maximum transceiver capability supported by the terminal .
  • the first parameter may also be used to indicate the terminal's transceiver capability on the first cell.
  • the terminal for example, the device 110
  • the terminal's transceiver capability is supported.
  • the first user identification card and the second user identification card share the receiving channel or the sending channel of the terminal, and support the terminal to simultaneously communicate in the first cell and the second cell.
  • the network device can control the behavior of the terminal to switch the communication system corresponding to the user identification card through the first parameter.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal to avoid the resulting resources waste.
  • the transceiver unit 1101 may also send second information to the first network device; the second information is used to indicate the maximum transceiver capability supported by the terminal and the transceiver sharing capability of the terminal.
  • the terminal (for example, the device 110) can also report its own maximum transceiver capability and transceiver sharing capability to the network device, so that the network device instructs the terminal to share the transceiver channel or switch the transceiver channel according to the first parameter, and thus can control the terminal Switch the behavior of the user identification card corresponding to the communication system.
  • the transceiver unit 1101 may also send third information to the first network device; the third information is used to request the first information.
  • the terminal may also request the first information from the network device before switching the communication system (SIM card), and then may switch to the second cell for communication according to the first information.
  • SIM card communication system
  • the network side can learn the behavior of the terminal switching the user identification card corresponding to the communication system, so as to avoid the waste of resources caused thereby.
  • the third information includes a first duration
  • the first duration is a duration during which the terminal requests communication in the second cell.
  • the terminal may also report to the network device the time length of communication in the second cell requested by the network device, so that the network device limits the terminal to switch from the first communication system to the first communication system according to the actual communication needs of the terminal. The length of time for the second communication system to communicate.
  • the transceiver unit 1101 may also obtain a second duration, where the second duration is the duration during which the terminal is allowed to communicate in the second cell.
  • the terminal obtains the duration of communication in the second cell defined by the network device, and then communicates in the second cell according to the duration allowed by the network device duration, avoiding the network side and the terminal side ( The behavior of the device 110) is inconsistent, and the network side can determine the behavior of the device 110 to switch the communication system corresponding to the user identification card.
  • a device 110 may include a processing unit 1102 and a transceiver unit 1101.
  • the processing unit 1102 generates first information; the first information includes first parameters for the terminal to communicate with the first network device (for example, the above-mentioned apparatus 110) on the first cell, and the first The parameter indicates that the terminal communicates on the second cell; the first cell corresponds to the first user identification card of the terminal, and the second cell corresponds to the second user identification card of the terminal;
  • the transceiver unit 1101 may send the first information to the terminal.
  • the network side (for example, the above-mentioned device 110) and the terminal side unified the terminal's behavior of switching the communication system corresponding to the user identification card, and the network side can learn the behavior of the terminal switching the user identification card corresponding to the communication system.
  • the first communication system can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid the waste of resources caused by this; in short, the method provided in this embodiment of the application can be used in To a certain extent, reduce the impact on the communication performance of the communication system when the terminal switches the SIM card.
  • the first parameter includes: information about one or more first bandwidth part BWPs activated on the first cell.
  • the network device (for example, the device 110) can indicate the activated BWP through the first parameter.
  • the terminal On the activated BWP, the terminal can communicate with the second cell, and the terminal can switch the behavior of the communication system corresponding to the subscriber identification card.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid resource waste caused by this.
  • the first parameter indicates that the BWP configured on the second cell is activated in one or more time units.
  • the network device may indicate the PWP activation mode through the first parameter, that is, at which time unit there is an activated BWP on the second cell.
  • the terminal can communicate with the second cell on the BWP activated in the second cell, and can control the behavior of the terminal to switch the communication system corresponding to the subscriber identification card.
  • the network device can suspend the paging terminal Or suspend statistics on the status of the terminal to avoid the resulting waste of resources.
  • the first parameter includes a first bit sequence with a length of M and/or a second bit sequence with a length of M;
  • the first bit sequence corresponds to N time units, and one bit in the first bit sequence is used to indicate one or more times of the BWP configured on the first cell in the N time units Unit is activated, M is less than or equal to N;
  • the second bit sequence corresponds to the N time units, and one bit in the second bit sequence is used to indicate that the BWP configured on the second cell is in the N One or more of the time units are activated.
  • the network device (for example, the apparatus 110) can indicate the activated BWP on the first cell through a bit sequence, and/or the activated BWP on the second cell.
  • the terminal On the activated BWP of the first cell, the terminal can communicate with The first cell communicates.
  • the terminal On the BWP activated in the second cell, the terminal can communicate with the second cell.
  • the terminal Through the first parameter, the terminal can control the behavior of switching the communication system corresponding to the subscriber identification card.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal, so as to avoid the waste of resources caused by this.
  • the first parameter indicates the transceiver capability of the terminal on the first cell, and the transceiver capability of the terminal on the first cell is lower than the maximum transceiver capability supported by the terminal .
  • the network device may also indicate the transceiver capability of the terminal on the first cell through the first parameter.
  • the transceiver capability indicated by the transceiver parameter is lower than the maximum transceiver capability supported by the terminal, it supports The first user identification card and the second user identification card of the terminal share the receiving channel or the sending channel of the terminal, and the terminal supports simultaneous communication on the first cell and the second cell.
  • the network device can control the behavior of the terminal to switch the communication system corresponding to the user identification card through the first parameter.
  • the network device can suspend the paging terminal or suspend the status statistics of the terminal to avoid the resulting resources waste.
  • the transceiver unit 1101 may also receive second information from the terminal; the second information is used to indicate the maximum transceiver capability supported by the terminal and the transceiver sharing capability of the terminal.
  • the network device obtains the terminal's maximum transceiver capability and the terminal's transceiver sharing capability, so as to instruct the terminal to share the transceiver channel or switch the transceiver channel according to the first parameter, which can control the terminal to switch the user identification card Corresponding to the behavior of the communication system.
  • the transceiver unit 1101 may also receive third information from the terminal; the third information is used to request the first information.
  • the network device may also obtain a request from the terminal before the terminal switches the communication system (SIM card), and then send the first information to the terminal in response to the request, and the terminal switches to the first information according to the first information. Communicate on the second cell.
  • the network side can learn the behavior of the terminal switching the user identification card corresponding to the communication system, so as to avoid the waste of resources caused thereby.
  • the third information further includes a first duration, and the first duration is a duration during which the terminal requests communication in the second cell.
  • the network device may also obtain the duration of communication in the second cell reported by the terminal, so as to limit the terminal's handover from the first communication system to the second communication system according to the actual communication needs of the terminal.
  • the duration of the communication may also obtain the duration of communication in the second cell reported by the terminal, so as to limit the terminal's handover from the first communication system to the second communication system according to the actual communication needs of the terminal. The duration of the communication.
  • the transceiver unit 1101 may also send information of a second duration to the terminal, where the second duration is the duration during which the terminal is allowed to communicate in the second cell.
  • the network equipment (for example, the apparatus 110) can limit the time period for the terminal to communicate in the second cell, and the terminal communicates through the second cell within the time allowed by the time of the network equipment, avoiding network side and terminal side behavior If they are not consistent, the network side can determine the behavior of the terminal to switch the user identification card corresponding to the communication system.
  • the embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores instructions; the instructions are used to execute the method described in FIG. 6 or FIG. 7.
  • the embodiment of the present application provides a computer program product including instructions, which when running on a communication device, enables the communication device to implement the method described in FIG. 6 or FIG. 7.
  • a wireless communication device in an embodiment of the present application includes: instructions stored in the wireless communication device; when the wireless communication device runs on the communication device shown in FIG. 5a, FIG. 5b, and FIG. The method shown in Figure 7.
  • the wireless communication device may be a chip or the like.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the processing unit used to execute these technologies at a communication device can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, Programmable logic device, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination of the foregoing.
  • the general-purpose processor may be a microprocessor.
  • the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine.
  • the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the function of any of the foregoing method embodiments is realized.
  • This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone In the three cases of B, A can be singular or plural, and B can be singular or plural.
  • the character "/" generally indicates that the associated objects before and after are in an "or” relationship.
  • At least one of! or "at least one of" as used herein means all or any combination of the listed items, for example, "at least one of A, B and C", It can mean: A alone exists, B alone exists, C exists alone, A and B exist at the same time, B and C exist at the same time, and there are six cases of A, B and C at the same time, where A can be singular or plural, and B can be Singular or plural, C can be singular or plural.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the corresponding relationships shown in the tables in this application can be configured or pre-defined.
  • the value of the information in each table is only an example, and can be configured to other values, which is not limited in this application.
  • the corresponding relationship shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, and so on.
  • the names of the parameters shown in the titles in the above tables may also adopt other names that can be understood by the communication device, and the values or expressions of the parameters may also be other values or expressions that can be understood by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables. Wait.
  • the pre-definition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, curing, or pre-fired.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, 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 the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

本申请实施例公开了通信系统切换方法及通信装置，涉及通信领域，能够在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。方法包括：终端接收来自第一网络设备的第一信息，所述第一信息包括所述终端在第一小区上与所述第一网络设备进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信；所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应；所述终端在所述第二小区上与第二网络设备进行通信。

Description

一种通信系统切换方法及通信装置 技术领域
本申请实施例涉通信领域，尤其涉及一种通信系统切换方法及通信装置。
背景技术
目前，终端接入通信系统时，可以利用终端中的用户识别卡完成身份识别。例如，可以利用用户识别模块(subscriber identity module，SIM)或全球用户识别(universal subscriber identity module，USIM)接入通信系统。
终端可以支持多个SIM卡，从而利用不同的SIM卡接入不同的通信系统。例如，终端支持两个SIM卡，终端可以利用第一SIM卡接入长期演进(long term evolution，LTE)通信系统，利用第二SIM卡接入第五代(5 th generation，5G)通信系统通信系统。假设终端接入了5G通信系统，当终端决定响应LTE通信系统的寻呼，或者，当终端需要在LTE通信系统中执行某些业务，终端可以自主地释放与5G通信系统的无线资源控制(radio resource control，RRC)连接，从而影响5G通信系统的通信性能。例如，在终端与5G通信系统断开连接期间，5G通信系统会继续寻呼该终端，导致寻呼资源的浪费。或者，5G通信系统在调度时仍会考虑该终端，导致调度信息的不准确，也会影响5G通信系统的通信性能。
发明内容
本申请实施例提供一种通信系统切换方法及通信装置，能够在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。
为达到上述目的，本申请实施例采用如下技术方案：
第一方面，提供了一种通信系统切换方法，包括：终端接收来自第一网络设备的第一信息，第一信息包括终端在第一小区上与第一网络设备进行通信的第一参数，第一参数指示终端在第二小区上进行通信；第一小区与终端的第一用户识别卡对应，第二小区与终端的第二用户识别卡对应；终端在第二小区上与第二网络设备进行通信。
本申请实施例中，终端使用一个用户识别卡注册到第一通信系统之后，该通信系统中的第一网络设备可以通过第一信息指示终端可以切换到另一个第二用户识别卡所对应的通信系统，即利用使用第二用户识别卡注册到的第二通信系统，与第二通信系统中的第二网络设备进行通信。其中第一网络设备和第二网络设备可以是相同的网络设备，也可以是不同的网络设备。可见，网络侧、终端侧对终端切换用户识别卡对应通信系统的行为进行了统一，网络侧可以获知终端切换用户识别卡对应通信系统的行为，当终端切换用户识别卡，与第一通信系统断开连接，第一通信系统可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费；总之，本申请实施例提供的方法可以在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。
一种可能的设计中，第一参数包括：第一小区上激活的一个或多个第一带宽部分BWP的信息。
本申请实施例中，网络设备可以通过第一参数指示激活的BWP，在激活的BWP 上，终端可以与第二小区进行通信，可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，第一参数指示第二小区上配置的BWP在一个或多个时间单元上被激活。
本申请实施例中，网络设备可以通过第一参数指示PWP激活模式，即在哪些时间单元上第二小区上有激活的BWP。此外，在第二小区激活的BWP上，终端可以与第二小区进行通信，可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；其中，第一比特序列对应N个时间单元，第一比特序列中的一个比特用于指示第一小区上配置的BWP在N个时间单元中的一个或多个时间单元上被激活，M小于等于N；第二比特序列对应N个时间单元，第二比特序列中的一个比特用于指示第二小区上配置的BWP在N个时间单元中的一个或多个时间单元上被激活。
本申请实施例中，可以通过比特序列指示第一小区上激活的BWP，和/或，第二小区上激活的BWP，在第一小区激活的BWP上，终端可以与第一小区进行通信，在第二小区激活的BWP上，终端可以与第二小区进行通信，通过第一参数可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，第一参数指示终端在第一小区上的收发能力，终端在第一小区上的收发能力低于终端支持的最大收发能力。
本申请实施例中，还可以通过第一参数指示终端在第一小区上的收发能力，当该收发参数所指示的收发能力低于终端所支持的最大收发能力，支持终端的第一用户识别卡和第二用户识别卡共享终端的接收通道或发送通道，支持终端在第一小区和第二小区上同时进行通信。通过第一参数可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，所述方法还包括：向第一网络设备发送第二信息；第二信息用于指示终端支持的最大收发能力和终端的收发共享能力。
本申请实施例中，还可以通过第一参数指示终端的最大收发能力和终端的收发共享能力，以便根据第一参数指示终端共享收发通道或切换收发通道，也就可以控制终端切换用户识别卡对应通信系统的行为。
一种可能的设计中，所述方法还包括：终端向第一网络设备发送第三信息；第三信息用于请求第一信息。
一种可能的设计中，第三信息还包括第一时长，第一时长为终端请求在第二小区进行通信的时长。
一种可能的设计中，方法还包括：获取第二时长，第二时长为终端被允许在第二小区进行通信的时长。
上述仅以终端作为该方法的执行主体对方法进行描述，可以理解，该方法也可以由终端的部件(例如处理器、芯片、或芯片系统等)执行。
第二方面，提供了一种通信系统切换方法，包括：第一网络设备生成第一信息，第一信息包括终端在第一小区上与第一网络设备进行通信的第一参数，第一参数指示终端在第二小区上进行通信；第一小区与终端的第一用户识别卡对应，第二小区与终端的第二用户识别卡对应。网络设备还可以向终端发送第一信息。
一种可能的设计中，第一参数包括：第一小区上激活的一个或多个第一带宽部分BWP的信息。
一种可能的设计中，第一参数指示第二小区上配置的BWP在一个或多个时间单元上被激活。
一种可能的设计中，第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；其中，第一比特序列对应N个时间单元，第一比特序列中的一个比特用于指示第一小区上配置的BWP在N个时间单元中的一个或多个时间单元上被激活，M小于等于N；第二比特序列对应N个时间单元，第二比特序列中的一个比特用于指示第二小区上配置的BWP在N个时间单元中的一个或多个时间单元上被激活。
一种可能的设计中，第一参数指示终端在第一小区上的收发能力，终端在第一小区上的收发能力低于终端支持的最大收发能力。
一种可能的设计中，方法还包括：从终端接收第二信息；第二信息用于指示终端支持的最大收发能力和终端的收发共享能力。
一种可能的设计中，所述方法还包括：从终端接收第三信息；第三信息用于请求第一信息。
一种可能的设计中，第三信息还包括第一时长，第一时长为终端请求在第二小区进行通信的时长。
一种可能的设计中，所述方法还包括：向终端发送第二时长的信息，第二时长为终端被允许在第二小区进行通信的时长。
上述仅以第一网络设备作为该方法的执行主体对方法进行描述，可以理解，该方法也可以由第一网络设备的部件(例如处理器、芯片、或芯片系统等)执行。
第三方面，本申请实施例提供一种通信装置，可以实现上述第一方面、或第一方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置可以为终端、或者为可支持终端实现上述方法的芯片、芯片系统、或处理器等。
第四方面，本申请实施例提供一种通信装置，可以实现上述第二方面、或第二方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为网络设备(如基站)、或者为可支持网络设备实现上述方法的芯片、芯片系统、或处理器等。该装置可以为终端、或者为可支持终端实现上述方法的芯片、芯片系统、或处理器等。
第五方面，本申请提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第一方面、或第一方面任一种可能的实施方式中所述的方法。
第六方面，本申请提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第二方面、或第二方面任一种可能的实施方式中所述的方法。
第七方面，本申请提供一种存储介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第一方面、或第一方面任一种可能的实施方式中所述的方法。
第八方面，本申请提供一种存储介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第二方面、或第二方面任一种可能的实施方式中所述的方法。
第九方面，本申请实施例提供一种通信系统，包括：上述第三方面所述的装置，和/或，上述第四方面所述的装置。
第十方面，本申请实施例提供一种通信系统，包括：上述第五方面所述的装置，和/或，上述第六方面所述的装置。
附图说明
图1为本申请提供的实施例适用的通信系统的架构图；
图2a至图2c为本申请实施例提供的几种可能的终端射频通道的示意图；
图3为本申请实施例提供的一种可能的载波聚合(carrier aggregation，CA)场景的示意图；
图4为本申请实施例提供的一种可能的双连接(dual connectivity，DC)场景的示意图；
图5a和图5b为本申请实施例提供的通信装置的结构框图；
图6为本申请实施例提供的一种通信系统切换方法的流程示意图；
图7为本申请实施例提供的另一种通信系统切换方法的流程示意图；
图8至图10为本申请实施例提供的几种可能的小区切换的示意图；
图11为本申请实施例提供的通信装置的另一结构框图。
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。
本申请实施例描述的技术可用于各种通信系统，例如第四代(4 th generation，4G)通信系统，4.5G通信系统，5G通信系统，多种通信系统融合的系统，或者未来演进的通信系统。例如长期演进(long term evolution，LTE)系统，新空口(new radio,NR)系统，无线保真(wireless-fidelity，WiFi)系统，以及第三代合作伙伴计划(3rd generation partnership project，3GPP)相关的通信系统等，以及其他此类通信系统。
首先，对本申请实施例涉及的术语进行解释说明。
(1)用户识别卡
用户识别卡中的信息可以作为终端在某个通信系统进行通信的身份标识，通信系统可以根据终端的用户识别卡中的信息对终端进行身份识别。用户识别卡还可以存储或生成密钥对通话进行加密，降低通话被窃听的风险。
用户识别卡主要用于终端接入通信网络时的身份认证。本申请实施例对用户识别卡的具体形式不做限定，例如用户识别卡可以是SIM卡、USIM卡，虚拟SIM卡，或 后续演进的身份识别卡等。为描述简单，本申请实施例将SIM卡、USIM卡、虚拟SIM卡等统称为SIM卡。SIM卡中有终端用户的身份识别码和密钥，通信系统可以根据SIM卡中的信息对终端用户进行鉴权。
(2)搜网注册
终端在网络进行注册后可获得网络提供的服务。终端在网络注册之后，网络中可保存终端的相关信息，使得网络可以寻呼到终端，也可以使得终端能够接入网络进行通信。
终端在开机过程或者漫游中，首先要利用用户识别卡进行搜网注册，搜网注册流程可以包括以下几个步骤：
步骤1.初始化
初始化过程用于获取用户识别卡信息。例如，在终端插入用户识别卡后，终端与用户识别卡进行数据交互，终端可以获得用户识别卡中包含的信息，后续可以利用这些信息注册到网络。
可以理解，各运营商可以通过用户识别卡中的信息来控制终端的网络服务。
步骤2.公共陆地移动网络(public land mobile network，PLMN)选择
PLMN选择是终端在RRC idle(空闲)态下进行搜网注册时的步骤。例如，终端根据用户识别卡中存储的PLMN信息，确定各个PLMN的优先级，可以从中选择优先级最高的PLMN。终端选择了PLMN，也就确定了网络服务运营商。
终端选择PLMN后可以获取PLMN ID。可以理解，PLMN的优先级可以根据用户识别卡预置服务、服务信号质量等确定。
步骤3.频率扫描
频率扫描即终端进行扫频，确定用于通信的一个频点。
步骤4.小区选择与驻留
终端选择了PLMN后进行了扫频并确定某个频点后，发起小区搜索过程。然后对搜索到的小区进行判断，如果所选的小区所属的PLMN与步骤2选择的PLMN相同，UE则按照驻留准则驻留到该小区，接收小区的系统信息。如果所选的小区所属的PLMN与步骤2选择的PLMN不同，终端可以重新进行小区搜索直到成功驻留到特定小区(例如所属PLMN与步骤2所选PLMN相同的小区)。
步骤5.PLMN注册
终端驻留小区之后可以发起注册流程，注册到所选择PLMN，以获取需要的服务。终端可以和驻留的小区建立无线资源控制(radio resource control，RRC)连接，进入RRC connected(连接)态以进行后续的数据传输。
至此，终端就完成了搜网注册的过程，可以与网络进行通信。
可选的，终端可以支持多个用户识别卡，例如，可以支持两个用户识别卡。对于支持多个用户识别卡的终端，终端开机后首先可以注册到一个SIM卡对应的通信系统中。例如，终端支持用户识别卡1和用户识别卡2，当终端开机后，可以根据用户识别卡1中的信息在用户识别卡1对应的通信系统的核心网完成注册，该核心网可以记录终端的相关信息，例如，终端的位置信息、能力信息等。该核心网还可以为终端分配IP地址。根据终端的能力，如双卡双待的终端，该终端还可以注册到第二个用户识 别卡对应的通信系统。
此外，终端支持的多个用户识别卡可以区分主用户识别卡和辅用户识别卡。例如，主用户识别卡可以是用户识别卡1，辅用户识别卡可以是用户识别卡2。或者，主用户识别卡是用户识别卡2，辅用户识别卡是用户识别卡1。
(3)用户识别卡对应的小区
本申请实施例中，根据用户识别卡中的信息进行PLMN选择和/或小区选择而确定的驻留小区或业务传输小区都可以称为该用户识别卡对应的小区。具体包括如下几种可能：
第一、搜网注册过程中与终端建立RRC连接的小区可以称为用户识别卡对应的小区。
例如，终端可以利用用户识别卡中的网络信息，在相应的网络进行注册。在注册过程中可以在某小区上建立RRC连接。其中，与终端建立RRC连接的小区可以称为用户识别卡对应的小区。
第二、与终端进行数据传输的小区或驻留小区可以称为用户识别卡对应的小区。
另外，终端完成注册之后，终端可以根据业务的需求或位置移动的状态，改变进行业务的小区(例如，与终端进行数据传输的小区)或驻留小区。这些小区都可以成为该用户识别卡对应的小区。其中，终端在进行业务时的小区处于RRC connected态，在驻留小区处于RRC idle态。
示例的，假设终端的SIM卡1是上海移动4G的卡，SIM卡2是上海联通3G的卡。SIM卡1里有上海移动4G网络对应的多种PLMN信息。终端可以根据SIM卡1里的信息，进行PLMN选择和小区选择。假设终端的用户在上海金桥地区，则PLMN选择的结果就是移动4G的PLMN，小区选择结果是金桥地区某基站1上的小区1。
终端可以根据SIM卡1中的用户身份信息在小区1上发起注册，注册过程需要在小区1上建立RRC连接，此时小区1可以称为SIM卡1对应的小区。
完成注册后，如果终端没有业务需求则可以断开与小区1的RRC连接，进入RRC idle态，但仍然可驻留在小区1上，监听小区1上发送的系统信息，此时小区1也可以称为SIM卡1对应的小区。
如果完成注册后，终端没有业务需求但所处地理位置发生了改变，例如，用户移动到了陆家嘴地区，此时小区选择/重选的结果是陆家嘴基站2上的小区2。终端可以驻留在小区2上监听该小区的系统信息(此时终端处于RRC idle态)，那么小区2也可以称为SIM卡1对应的小区。
若此时终端有业务需求，就会在小区2上建立RRC连接，进入RRC connected态，此时小区2可以称为SIM卡1对应的小区。
(4)无线资源控制(radio resource control，RRC)状态
LTE通信系统中，终端的RRC状态可以是RRC idle态(空闲态)或RRC connected态(连接态)。5G通信系统中，终端的RRC状态可以是RRC idle态、RRC connected态或RRC inactive(未激活)态。
在5G通信系统中，当终端与网络设备建立了RRC连接，终端可以处于RRC connected态或者RRC inactive态。当终端与网络设备未建立RRC连接，终端则处于 RRC idle态。
终端处于inactive态时，终端可以在无线接入网络区域(radio access network based notification area，RNA)内移动，核心网会保持终端的CM(connection management)-connected。可以理解的是，核心网认为终端处于连接状态，会保留终端的RRC配置信息。
可以理解，终端从RRC connected态进入RRC inactive态的时候，基站可以指示一个RNA区域，终端在该RNA区域内的活动不需要知会网络，但是超出该RNA区域就需要做RNA更新(update)。
(5)带宽部分(bandwidth part，BWP)
BWP是载波上一组连续的RB资源，可以为终端配置BWP以用于上行或下行传输。新空口(new radio，NR)Rel-15中一个服务小区最多可以给一个终端配置4个BWP。
其中，用于终端接收数据的BWP称为下行BWP，用于终端发送数据的BWP称为上行BWP。对于一个终端，可选地，同时只能激活一个BWP，终端在激活的BWP上进行数据的收发。
图1给出了本申请提供的技术方案所适用的一种通信系统的示意图，该通信系统可以包括网络设备以及终端。终端200上的不同用户识别卡可以支持终端在不同的通信系统进行注册，终端注册在不同的通信系统之后，可以与不同的网络设备的进行通信，例如，在网络设备的服务小区上进行数据收发。参考图1，假设终端200支持SIM卡1、SIM卡2两个SIM卡。SIM卡1和SIM卡2可以是相同运营商提供的SIM卡，也可以是不同运营商提供的SIM卡，例如，SIM卡1是运营商A提供的支持LTE FDD的SIM卡，SIM卡2是运营商B提供的支持5G的SIM卡。
终端可以使用SIM卡1中的信息注册到第一通信系统，网络设备101可以是第一通信系统中的网络设备，终端注册到第一通信系统后可以接入网络设备101的小区。终端还可以使用SIM卡2中的信息注册到第二通信系统，网络设备102可以是第二通信系统中的网络设备，终端注册到第二通信系统后可以接入网络设备102的小区。
需要说明的是，图1仅为示意图，并不构成对本申请提供的技术方案的适用场景的限定。终端200中的不同SIM卡也可以支持终端在同一通信系统进行注册，例如，终端使用SIM卡1、SIM卡2中的信息注册到第一通信系统。
本申请中，网络设备可以是任意一种具有无线收发功能的设备。包括但不限于：LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，NR中的基站(gNodeB或gNB)或收发点(transmission receiving point/transmission reception point，TRP)，后续演进的基站，WiFi系统中的接入节点，无线中继节点，无线回传节点等。基站可以是：宏基站，微基站，微微基站，小站，中继站，或，气球站等。多个基站可以支持上述提及的同一种技术的网络，也可以支持上述提及的不同技术的网络。基站可以包含一个或多个共站或非共站的TRP。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)，和/或，分布单元(distributed unit，DU)。网络设备还可以是服务器，可穿戴设备，机器通信设备、或车载设备等。以下以网络设备为基站为例进行说明。所述多个网络 设备可以为同一类型的基站，也可以为不同类型的基站。基站可以与终端设备进行通信，也可以通过中继站与终端设备进行通信。终端设备可以与不同技术的多个基站进行通信，例如，终端设备可以与支持LTE网络的基站通信，也可以与支持5G网络的基站通信，还可以支持与LTE网络的基站以及5G网络的基站的双连接。
终端是一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的终端、车载终端设备、无人驾驶(self driving)中的终端、辅助驾驶中的终端、远程医疗(remote medical)中的终端、智能电网(smart grid)中的终端、运输安全(transportation safety)中的终端、智慧城市(smart city)中的终端、智慧家庭(smart home)中的终端、可穿戴终端设备、机器通信中的终端等等。本申请的实施例对应用场景不做限定。终端有时也可以称为终端设备、用户设备(user equipment，UE)、接入终端设备、车载终端、工业控制终端、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、终端设备、无线通信设备、机器终端、UE代理或UE装置等。终端可以是固定的，也可以是移动的。
此外，在本申请实施例中，终端还可以是物联网(internet of things，IoT)系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。本申请实施例中的终端设备还可以是机器类型通信(machine type communication，MTC)中的终端设备。本申请的终端设备还可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。因此，本申请实施例可以应用于车联网，例如车辆外联(vehicle to everything，V2X)、车间通信长期演进技术(long term evolution-vehicle，LTE-V)、车到车(vehicle-to-vehicle，V2V)等。
图2a～图2c示出了支持两个用户识别卡的终端的结构示意。其中，一个用户识别卡可以对应一套或多套射频电路。射频电路与天线连接。终端可以通过与射频电路连接的天线接收信号，射频电路中的接收部分与相应的天线构成一个接收通道。终端还可以通过与射频电路连接的天线发送信号，射频电路中的发送部分与相应的天线构成一个发送通道。
参考图2a，终端中的SIM卡1和SIM卡2共享一个接收通道，SIM卡1和SIM卡2共享同一个发送通道，这种结构也可以称为单收单发(single Rx/single Tx)结构；参考2b，SIM卡1和SIM卡2可以对应各自独立的接收通道，但SIM卡1和SIM卡2共享一个发送通道，这种结构也可以称为双收单发(dual Rx/single Tx)结构；参考图2c，两个发送通道中一个是SIM卡独立使用的，另一个是各SIM卡共享的。图2c中Tx1和Tx2是各SIM独立的发送通道，Tx1还可以共享给SIM卡2使用。当SIM卡1不使用Tx1时，SIM卡2可以同时使用Tx1和Tx2两个发送通道；当SIM卡1 使用Tx1时，SIM卡2则不能使用Tx1发送。图2c这种结构也可以称为双收双发(dual Rx/dual Tx)结构。
图1所示的通信系统可以支持图3所示的CA场景，CA是将两个或两个以上的单元载波(component carrier，CC)聚合在一起以支持更大的传输带宽，一个CC对应一个小区。如图3所示，网络设备100和终端200通过主小区和/或辅小区进行通信。其中，主小区包括主载波，可以是主下行载波和/或主上行载波。辅小区包括辅载波，可以是辅下行载波和/或辅上行载波。终端200可以位于主小区覆盖范围，向网络设备100发送数据，网络设备100也可以通过主小区下行载波向终端200发送数据。终端200也可以位于辅小区覆盖范围内，通过辅小区上行载波向网络设备发送数据，网络设备100也可以通过辅小区下行载波向终端200发送数据。
需要说明的是，本申请实施例对主小区覆盖范围和辅小区覆盖范围的大小没有限制，为描述方便，将一个小区称为主小区，另一个小区称为辅小区，主小区和辅小区可以互换，主小区和辅小区的名称本身不起限定作用。
图1所示的通信系统还可以支持图4所示的DC场景，即用于聚合的至少两个载波是不同的网络设备提供的载波。
参考图4，在DC场景中，网络设备101可以为终端200提供一个载波(图4所示的载波1)，用于终端200与网络设备101之间进行通信。网络设备102可以为终端200提供一个载波(图4所示的载波2)，用于终端200与网络设备102之间进行通信。网络设备101可以是主节点，网络设备102可以是辅节点，载波1可以称为主小区组载波(或者可以称为主节点载波)，载波2可以称为辅小区组载波(或者可以称为辅节点载波)；
或者，网络设备102可以是主节点，网络设备101可以是辅节点，载波2可以称为主小区组载波(或者可以称为主节点载波)，载波1可以称为辅小区组载波(或者可以称为辅节点载波)。
本申请实施例中，终端根据不同SIM卡注册在不同的通信系统。其中，终端在一个通信系统进行通信的载波之间支持CA或DC。例如，终端利用第一SIM卡注册在第一通信系统，第一通信系统为终端配置了3.5GHz和2.1GHz两个载波(这两个载波之间可以支持CA或DC)，终端可以通过3.5GHz载波和2.1G两个载波在第一通信系统进行收发数据。终端利用第二SIM卡注册在第二通信系统，第二通信系统为终端配置了一个900MHz的载波，终端可以通过900MHz载波在第二通信系统进行数据收发。
支持多SIM卡的终端进行通信所对应的SIM卡发生切换时，可能会对通信系统的性能造成影响。例如，终端根据第一SIM卡中的信息注册在第一通信系统，在第一通信系统中进行通信时，由于终端自身的需求，终端可能会断开与第一通信系统的网络设备之间的连接，突然与第一通信系统断开连接。在终端与第一通信系统断开连接期间，第一通信系统会继续寻呼终端，造成该系统寻呼资源的浪费，进而影响第一通信系统的通信性能，导致该系统的传输效率下降。或者终端自主与第一通信系统断开连接，造成第一通信系统对终端状态的错误理解，从而错误统计系统中的数据，导致通信资源的浪费或通信过程的错误。
为描述简便，本申请实施例以各通信系统包括一个小区为例进行描述。当一个通 信系统包括多个小区时，本申请仍然适用。本申请对一个通信系统包括的小区个数不做限定。
本申请实施例提供一种通信系统切换方法，终端接收来自第一网络设备的第一信息，所述第一信息包括所述终端在第一小区上与所述第一网络设备进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信。所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应。所述终端接收第一信息后，可以在第二小区上与第二网络设备进行通信。本申请实施例中，终端使用一个用户识别卡注册到第一通信系统之后，该通信系统中的第一网络设备可以通过第一信息指示终端可以切换到另一个第二用户识别卡所对应的通信系统，即使用第二用户识别卡注册到的第二通信系统，与第二通信系统中的第二网络设备进行通信。其中第一网络设备和第二网络设备可以是相同的网络设备，也可以是不同的网络设备。可见，网络侧、终端侧对终端切换用户识别卡对应通信系统的行为进行了统一，网络侧可以获知终端切换用户识别卡对应通信系统的行为，当终端切换用户识别卡，与第一通信系统断开连接，第一通信系统可以暂停寻呼终端或对该终端的状态统计，避免因此造成的资源浪费。因此，本申请实施例提供的方法可以在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。
本申请实施例中切换用户识别卡，也可以理解为终端切换用户识别卡对应的通信系统，或者部分终端能力从一个通信系统转移到另一个通信系统。例如，终端首先根据第一用户识别卡中的信息注册到第一网络，与第一小区建立RRC连接。终端还可以根据第二用户识别卡中的信息注册到第二网络，终端切换用户识别卡可以是从第一网络切换到第二网络，在第二网络的小区(例如，第二小区)中进行通信。也可以是部分或全部射频或基带能力从第一网络转移到第二网络。射频或基带资源的切换也可以理解为不同通信系统之间的能力协调。
本申请实施例所述的终端，可以通过图5a中的通信装置510来实现。图5a给出了一种装置的结构示意图。所述装置510可以是网络设备，也可以是终端设备，也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
所述装置510可以包括一个或多个处理器5101，所述处理器5101也可以称为处理单元，可以实现一定的控制功能。所述处理器5101可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端、终端芯片，DU或CU等)进行控制，执行软件程序，处理软件程序的数据。
在一种可选的设计中，处理器5101也可以存有指令和/或数据5103，所述指令和/或数据5103可以被所述处理器运行，使得所述装置510执行上述方法实施例中描述的方法。
在另一种可选的设计中，处理器5101中可以包括用于实现接收和发送功能的收发单元。例如该收发单元可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述 收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在又一种可能的设计中，装置510可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。
可选的，所述装置510中可以包括一个或多个存储器5102，其上可以存有指令5104，所述指令可在所述处理器上被运行，使得所述装置510执行上述方法实施例中描述的方法。可选的，所述存储器中还可以存储有数据。可选的，处理器中也可以存储指令和/或数据。所述处理器和存储器可以单独设置，也可以集成在一起。例如，上述方法实施例中所描述的对应关系可以存储在存储器中，或者存储在处理器中。
可选的，所述装置510还可以包括收发器5105和/或天线5106。所述处理器5101可以称为处理单元，对所述装置510进行控制。所述收发器5105可以称为收发单元、收发机、收发电路或者收发器等，用于实现收发功能。
本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor,PMOS)、双极结型晶体管(Bipolar Junction Transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的装置可以是网络设备或者终端设备，但本申请中描述的装置的范围并不限于此，而且装置的结构可以不受图5a的限制。装置可以是独立的设备或者可以是较大设备的一部分。例如所述装置可以是：
(1)独立的IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据和/或指令的存储部件；
(3)ASIC，例如可以是调制解调器；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端、智能终端、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等。
图5b提供了一种终端设备的结构示意图。为了便于说明，图5b仅示出了终端设备的主要部件。如图5b所示，终端设备520包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端进行控制，执行软件程序，处理软件程序的数据。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，处理器可以读取存储单元中的软件程序，解析并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数 据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行处理后得到射频信号并将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，该射频信号被进一步转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
为了便于说明，图5b仅示出了一个存储器和处理器。在实际的终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本发明实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图5b中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在一个例子中，可以将具有收发功能的天线和控制电路视为终端设备520的收发单元5201，将具有处理功能的处理器视为终端设备520的处理单元5202。如图5b所示，终端设备520包括收发单元5201和处理单元5202。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元5201中用于实现接收功能的器件视为接收单元，将收发单元5201中用于实现发送功能的器件视为发送单元，即收发单元5201包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。可选的，上述接收单元和发送单元可以是集成在一起的一个单元，也可以是各自独立的多个单元。上述接收单元和发送单元可以在一个地理位置，也可以分散在多个地理位置。
本申请实施例提供一种通信系统切换方法，如图6所示，所述方法包括以下步骤：
601、第一网络设备向终端发送第一信息，终端接收该第一信息；第一信息包括终端在第一小区上与第一网络设备进行通信的第一参数，第一参数指示所述终端在第二小区上进行通信；第一小区与终端的第一用户识别卡对应，第二小区与终端的第二用户识别卡对应。
本申请实施例中，用户识别卡例如可以是SIM卡，存储有终端进行身份验证的信息。终端可以利用第一用户识别卡中的信息注册到第一通信系统，可以在第一通信系统中进行通信。示例的，在第一网络设备的第一小区上与第一网络设备进行通信，可以是向第一网络设备发送数据，或者，接收第一网络设备发送的数据。可以认为第一小区是与第一用户识别卡对应的小区，即第一小区与终端的第一用户识别卡对应。
第一网络设备还可以通过第一信息指示终端切换用户识别卡，终端接收第一信息后可以切换到根据第二用户识别卡注册的第二通信系统，与第二通信系统中的第二网 络设备进行通信。示例的，在第二网络设备的第二小区上与第二网络设备进行通信，可以是向第二网络设备发送数据，或者，接收第二网络设备发送的数据。可以认为第二小区是与第二用户识别卡对应的小区，即第二小区与终端的第二用户识别卡对应。本申请实施例中，“进行通信”包括接收系统信息，或接收寻呼消息，或发起随机接入，或进行数据的发送，或进行数据的接收等。
602、终端在所述第二小区上与第二网络设备进行通信。
具体实现中，通过第一参数激活第一小区不进行数据收发的BWP，当第一小区不进行数据收发的BWP被激活，终端可以通过第二小区与第二网络设备通信。或者，第一参数可以指示第一小区在哪些时间单元上被激活，也就可以确定哪些时间单元上第一小区没有被激活，终端可以在这些第一小区没有被激活的时间单元上通过第二小区与第二网络设备通信。或者，第一参数可以指示第一小区的BWP在哪些时间单元上被激活，也就可以确定哪些时间单元上第一小区的BWP没有被激活，在这些第一小区的BWP没有被激活的时间单元上终端可以通过第二小区与第二网络设备通信。或者，第一参数指示终端在第一小区上进行通信的收发能力，当终端在第一小区上进行通信的收发能力低于终端最大收发能力，终端通过第一小区与第一网络设备进行通信的同时，还可以通过第二小区与第二网络设备通信。
具体可以通过以下三种方式中的一种或多种配置第一信息中的第一参数：
第一种方式、第一网络设备可以为终端配置第一小区上的BWP，在该BWP上终端不进行数据的接收或发送。该BWP可以是上行BWP或下行BWP，在上行BWP上终端不进行数据的发送，在下行BWP上终端不进行数据的接收。示例的，该BWP可以称为特殊BWP(special BWP)、空闲BWP、暂停BWP，或休眠BWP等，本申请实施例对BWP的名称不作限定。其中，特殊BWP可以为特殊下行BWP或特殊上行BWP，空闲BWP可以为空闲下行BWP或空闲上行BWP，暂停BWP可以为暂停下行BWP或暂停上行BWP，休眠BWP可以为休眠下行BWP或休眠上行BWP。在特殊下行BWP上终端不进行数据的接收；在特殊上行BWP上终端不进行数据的发送。第一网络设备可以通过第一参数激活为第一小区配置的特殊BWP。当为第一小区配置的特殊BWP被激活时，终端在第一小区上不进行数据的接收或发送。
以激活特殊下行BWP为例，当特殊下行BWP被激活时，终端可以将接收通道切换至第二用户识别卡注册的通信系统，与第二通信系统的第二网络设备进行通信，在第二网络设备的小区(即本申请实施例所述的第二小区)进行数据的接收。此外，终端在第一小区上不进行数据接收，例如终端在第一小区上不进行以下一项或多项：监听控物理下行控制信道(physical downlink control channel，PDCCH)、接收物理下行共享信道(physical downlink shared channel，PDSCH)、信道状态信息(channel state information，CSI)测量、接收系统信息。
以激活特殊上行BWP为例，当特殊上行BWP被激活时，终端可以将接收通道切换至第二用户识别卡注册的通信系统，与第二通信系统的第二网络设备进行通信，在第二网络设备的小区(即本申请实施例所述的第二小区)上进行数据发送。此外，终端在第一小区上不进行数据发送，例如终端在第一小区上不进行以下一项或多项：发送物理上行控制信道(physical upwnlink control channel，PUCCH)、发送物理下行共 享信道(physical upwnlink shared channel，PUSCH)。
具体实现中，第一参数可以包括：第一小区上激活的一个或多个第一BWP的信息。其中，第一BWP可以是上述特殊BWP(可以是特殊下行BWP或特殊上行BWP)。终端从第一网络设备接收第一信息后，根据第一信息可以确定第一小区上有激活的第一BWP，还可以确定终端可以切换至第二用户识别卡的通信系统，与第二通信系统的第二网络设备进行通信，在第二网络设备的第二小区上接收第二网络设备发送的数据，或，在第二网络设备的第二小区上向第二网络设备发送数据。
第二种方式、第一网络设备可以指示第二小区在哪些时间单元上被激活，或者，也可以指示第二小区的BWP在哪些时间单元上被激活。当第二小区或第二小区的BWP在某个时间单元上被激活时，终端可以在第二小区或第二小区的BWP上与第二网络设备进行通信。
示例性地，第一参数指示小区激活模式或BWP激活模式；所述小区激活模式用于指示所述第二小区在一个或多个时间单元上被激活；所述BWP激活模式用于指示所述第二小区上配置的BWP在一个或多个时间单元上被激活。
可以理解，第二小区上配置的BWP被激活时，终端可以在BWP上进行正常的数据收发，即当第二小区上配置的这种BWP被激活时，终端可以在该BWP上进行正常的通信，例如，监听PDCCH、接收PDSCH、测量CSI、接收系统信息、发送物理上行共享信道(physical uplink shared channel，PUSCH)等。其中，这种在第二小区上配置的BWP可以称为常规BWP、或正常BWP等，与上述特殊BWP不同，本申请实施例对BWP的名称不做限制。
类似的，当第二小区被激活，终端在激活的第二小区上可以进行正常的数据收发，例如，监听PDCCH、接收PDSCH、测量CSI、接收系统信息、发送物理上行共享信道(physical uplink shared channel，PUSCH)等。
可选的，上述小区激活模式或BWP激活模式可以通过比特序列进行指示。可选的，第一参数可以包括长度为M的第一比特序列，第一比特序列指示第一小区的激活模式或第一小区的BWP激活模式。当终端工作在两个小区上时，终端可以对第一比特序列取反，得到第二小区对应的比特序列，根据得到的比特序列确定第二小区的BWP激活模式，即第二小区的BWP在哪些时间单元上被激活。或者，第一比特序列指示第一小区的激活模式，当终端工作在两个小区上时，终端可以对第一比特序列取反，得到第二小区对应的比特序列，根据得到的比特序列确定第二小区激活模式，即第二小区在哪些时间单元上被激活。
例如，所述第一比特序列对应N个时间单元，所述第一比特序列中的任意一个比特用于指示所述第一小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活，M小于等于N。假设第一比特序列为01101，其中一个比特对应一个时隙(slot)，第一比特序列与时隙1～5一一对应。对第一比特序列取反，得到第二比特序列“10010”，与时隙1～5一一对应。比特为“0”代表对应的时隙上，第二小区或为第二小区配置的BWP未被激活；比特为“1”代表对应的时隙上，第二小区或为第二小区配置的BWP被激活。第二比特序列“10010”表示：在时隙1上，第二小区或为第二小区配置的BWP被激活，终端可以在时隙1上，通过第二小区或为第二小区 配置的BWP与第二网络设备进行通信，在第二小区上进行数据收发。在时隙4上，为第二小区配置的BWP被激活，终端可以在时隙4上，通过第二小区或为第二小区配置的BWP与第二网络设备进行通信，在第二小区上进行数据收发。
可以理解，第一参数还可以是布尔类型的序列，例如，第一序列为false，true，true。其中，False代表不激活，true代表激活。
可选的，第一参数可以包括长度为M的第二比特序列，所述第二比特序列对应所述N个时间单元，所述第二比特序列中的任意一个比特用于指示所述第二小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活。示例的，第二比特序列为“10001”，其中，每个比特对应2个时隙，第二比特序列对应时隙1～10。假设比特为“0”代表对应的时隙上，第二小区未被激活或为第二小区配置的BWP未被激活；比特为“1”代表对应的时隙上，第二小区被激活或为第二小区配置的BWP被激活。第二比特序列“10001”表示：时隙1和时隙2上，第二小区被激活或为第二小区配置的BWP被激活，终端可以在时隙1和时隙2上，通过为第二小区配置的BWP与第二网络设备进行通信，在第二小区上进行数据收发。时隙9和时隙10上，第二小区被激活或为第二小区配置的BWP被激活，终端可以在时隙9和时隙10上，通过为第二小区配置的BWP与第二网络设备进行通信，在第二小区上进行数据收发。
可选的，第一参数包括长度为M的第一比特序列和长度为M的第二比特序列。
需要说明的是，本申请实施例所述的时间单元可以是一个或多个时域符号、一个或多个时隙、一个或多个子帧、或者一个或多个无线帧等。
一种可能的实现方法中，上述第一比特序列和上述第二比特序列的长度不同。可选的，第一比特序列的长度为M1，第一比特序列的比特与时间单元一一对应，例如，第一比特序列与N1个时间单元对应，其中M1＝N1。第二比特序列的长度为M2，第二比特序列的一个比特对应多个时间单元，例如，第二比特序列与N2个时间单元对应，其中M2<N2。
示例的，第一比特序列包含4个比特，与4个时间单元一一对应。第二比特序列包含两个比特，其中一个比特对应两个时间单元。
此外，第一比特序列对应的时间单元和第二比特序列对应的时间单元的长度可以不同，例如，时间单元的绝对时间长度不同，示例的，第一比特序列对应的一个时间单元是0.5ms，第二比特序列对应的一个时间单元是1ms。
或者，第一比特序列对应的时间单元的数量与第二比特序列对应的时间单元的数量相同，但由于numerology参数不同导致二者对应的时间单元的绝对时间不同。例如，第一比特序列对应的一个时间单元是一个时隙，第二比特序列对应的一个时间单元也是一个时隙，但是由于第一小区的numerology参数与第二小区的numerology参数不同，导致第一比特序列对应的时隙与第二比特序列对应的时隙的长度不同。例如，第一小区的numerology参数是0，对应的子载波间隔(sub carrier spacing，SCS)为15KHz，当numerology参数为0时，一个时隙对应1ms。第二小区的numerology参数是1，对应的SCS为30KHz，当numerology参数为1时，一个时隙对应0.5ms。此外，numerology参数可以用μ来表示。
第三种方式、第一参数还可以指示终端在第一小区上的收发能力。例如，第一参 数可以包括终端在第一小区上的收发参数。当终端在第一小区上的接收能力低于终端所支持的最大接收能力时，支持终端的第一用户识别卡和第二用户识别卡可以共享终端的接收通道，从而支持终端在第一小区和第二小区上同时接收数据。当终端在第一小区上的发送能力低于终端所支持的最大发送能力时，支持终端的第一用户识别卡和第二用户识别卡可以共享终端的发送通道，从而支持终端在第一小区和第二小区上同时发送数据。
示例的，第一参数包括：所述终端在所述第一小区上进行通信的收发参数；所述收发参数指示所述终端在所述第一小区上的收发能力，所述终端在所述第一小区上的收发能力低于所述终端支持的最大收发能力。
可选的，收发参数可以是终端在第一小区上进行上行发送的发送参数，该发送参数指示终端在第一小区上的发送能力。其中，终端在第一小区上的发送能力可以是终端在第一小区上进行上行发送所使用的发送天线数量，例如，用3Tx表示发送天线数量为3，其中Tx表示发送天线。
示例的，收发参数可以是第一小区的BWP配置参数中，与上行发射天线个数有关的参数，例如，收发参数为PUSCH-Config IE中的参数1、参数2、参数3、参数4中的一个或多个。其中，参数1表示使用基于码本的发送方式，还是使用不基于码本的发送方式，参数1可以是txConfig参数。参数2表示在全部和部分非相干的发送、部分非相干发送或非相干发送中选择一种发送方式，参数2可以是codebookSubset参数。参数3表示发送的最大阶数，参数3可以是maxRank参数。参数4表示MIMO发送的最大层数，参数4可以是PUSCH-ServingCellConfig IE中的maxMIMO-Layers参数。其中，maxMIMO-Layers参数与终端可以使用的最大天线个数有关。
示例性的，终端支持采用最多4个天线进行数据发送，其中终端在第一通信系统的第一小区上最多可以支持采用4个天线进行数据发送(也就是最大的终端能力)，其中2个天线的发送能力是来源于与第二通信系统的能力共享，而终端在第二通信系统的第二小区上最多支持采用2个天线进行数据发送。当终端只需要向第一网络设备发送数据时，可以使用4个天线进行数据发送，则maxMIMO-Layers参数可以设置为4；当终端既需要向第一网络设备发送数据，又需要向第二网络设备发送数据时，第一小区可以使用2个天线进行数据发送，则第一小区上maxMIMO-Layers参数可以设置为2，第二小区也可以使用2个天线进行数据发送，则第二小区上maxMIMO-Layers参数可以设置为2。
收发参数也可以是BWP配置参数中，与下行接收天线个数有关的参数，指示终端在第一小区上的接收能力。其中，终端在第一小区上的接收能力可以是终端在第一小区上进行下行接收所使用的接收天线数量，例如可以用3Rx表示接收天线数量的数量为3，其中，Rx表示接收天线。
示例性的，收发参数是PDSCH-Config IE中参数5，其中，参数5表示下行控制信息(downlink control information，DCI)可以调度的最大码字个数。参数5可以是maxNrofCodeWordsScheduledByDCI参数。其中，当MIMO的发送层数大于一定门限值时，可以支持多个码字的发送。示例性的，当终端支持最大4层的MIMO时，可以允许一个DCI调度2个码字，即参数5可以表示“调度2个码字”。
需要说明的是，第一小区的BWP配置参数用于为第一小区配置BWP，可以是第一网络设备通过RRC消息或MAC CE或下行控制信息(downlink control information，DCI)配置的。此外，本申请实施例中涉及的BWP可以是下行BWP或上行BWP。
本申请实施例中，对应上述三种配置第一参数的方式，终端也可以通过以下三种方式确定可以在第二小区上与第二网络设备进行通信：
第一种方式、终端从第一网络设备接收第一信息，第一信息中的第一参数指示为第一小区配置的第一BWP被激活。其中，第一BWP可以称为特殊BWP，可以包括特殊的下行BWP或特殊的上行BWP。在特殊的下行BWP上终端不进行数据的接收；在特殊的上行BWP上终端不进行数据的发送。
因此，终端可以确定在第一小区上暂时不进行数据传输，包括上行数据发送和/或下行数据接收。在为第一小区配置的第一BWP激活期间，终端可以切换到第二用户识别卡，在第二用户识别卡对应的第二小区上与第二网络设备进行通信。
第二种方式、终端从第一网络设备接收第一信息，第一信息中第一参数指示了第二小区激活模式或第二小区的BWP激活模式，终端可以根据第二小区的BWP激活模式确定为第二小区配置的BWP在哪些时间单元上被激活。当某个时间单元上，为第二小区配置的BWP被激活，终端可以切换到第二用户识别卡，在第二用户识别卡对应的第二小区上与第二网络设备进行通信。或者，根据第二小区激活模式确定第二小区在哪些时间单元上被激活。当某个时间单元上，第二小区被激活，终端可以切换到第二用户识别卡，在第二用户识别卡对应的第二小区上与第二网络设备进行通信。
示例性的，第一参数为长度为M的第一比特序列，指示了第一小区的激活模式或第一小区的BWP激活模式。假设相同的时间单元上只能激活一个小区的BWP，即一个时间单元上，要么第一小区的BWP被激活，要么第二小区的BWP被激活。或者，相同的时间单元上只能激活一个小区，即一个时间单元上，要么第一小区被激活，要么第二小区被激活。因此，终端可以对第一比特序列取反，获得第二比特序列。第二比特序列指示第二小区的激活模式或第二小区的BWP激活模式，终端可以根据第二小区的激活模式确定第二小区在哪些时间单元上被激活，或者，根据第二小区的BWP激活模式确定为第二小区配置的BWP在哪些时间单元上被激活。例如，在时隙1上，为第二小区配置的BWP被激活，终端可以切换到第二用户识别卡，在第二用户识别卡对应的第二小区上与第二网络设备进行通信。或者，在时隙1上，第二小区被激活，终端可以切换到第二用户识别卡，在第二用户识别卡对应的第二小区上与第二网络设备进行通信。
示例性的，第一参数也可以为上述第二比特序列，终端可以直接根据第二比特序列确定为第二小区配置的BWP在哪些时间单元上被激活，或者，第二小区在哪些时间单元上被激活。
第三种方式、第一参数为终端在第一小区上进行通信的收发参数。当该收发参数所指示的发送能力低于终端所支持的最大发送能力，终端可以确定第一用户识别卡和第二用户识别卡共享终端的发送通道，支持终端在第一小区和第二小区上同时进行上行发送。当该收发参数所指示的接收能力低于终端所支持的最大接收能力，终端可以确定第一用户识别卡和第二用户识别卡共享终端的接收通道，支持终端在第一小区和 第二小区上同时进行下行接收。
示例的，第一参数包括maxMIMO-Layers，指示终端在第一小区上最多支持2Tx上行发送，假设终端最大支持4Tx发送，由于4Tx大于2Tx，即第一参数指示的发送能力低于终端所支持的最大发送能力，终端可以在第一小区和第二小区上同时进行通信。其中，终端使用2Tx在第一小区上进行上行发送，使用其余2Tx在第二小区上进行上行发送。
本申请实施例中，第一网络设备与第二网络设备可以是不同的网络设备，第一小区和第二小区是不同网络设备的小区。例如，第一网络设备是4G基站，第一小区是4G小区，第二网络设备是5G基站，第二小区是5G小区。终端在4G小区进行通信的载波之间支持CA或DC，在5G小区进行通信的载波之间也支持CA或DC。
此外，第一网络设备和第二网络设备也可以是相同的网络设备，第一小区和第二小区是同一网络设备的不同小区。例如，第一网络设备、第二网络设备均指的是某个5G基站，第一小区该5G基站的服务小区1，第二小区是该5G基站的服务小区2。终端在服务小区1上进行通信的载波之间支持CA或DC，在服务小区2上进行通信的载波之间也支持CA或DC。
需要说明的是，终端在第二小区上与第二网络设备的通信包括接收数据或发送数据，终端的RRC状态可以为RRC connected态，RRC inactive态或RRC idle态。
可选的，图6所示的方法还包括：终端向所述第一网络设备发送第二信息；所述第二信息用于指示所述终端支持的最大收发能力和所述终端对应不同用户识别卡的收发共享能力。
其中，所述终端支持的最大收发能力可以是终端支持的最大发射天线数，也可以是终端支持的最大接收天线数。终端对应不同用户识卡的收发共享能力，可以是终端对应第一用户识别卡的收发共享能力、和/或终端对应第二用户识别卡的收发共享能力。例如，终端对应第一用户识别卡的收发共享能力可以指示终端在第一小区上进行通信时是否支持接收通道的共享，或，终端在第一小区上进行通信时是否支持发送通道的共享。终端对应第二用户识别卡的收发共享能力可以指示终端在第二小区上进行通信时是否支持接收通道的共享，或终端在第二小区上进行通信时是否支持发送通道的共享。终端对应第一用户识别卡的收发共享能力还可以指示终端在第一小区进行通信时支持的共享程度，终端对应第二用户识别卡的收发共享能力还可以指示终端在第二小区进行通信时支持的共享程度。
示例性的，第二信息可以包括一个比例系数，根据比例系数可以确定终端在第一小区上进行通信时支持的接收通道/发送通道的数量，例如，第二信息中用于指示终端共享能力的比例系数为50％，假设终端在第一小区上最大支持4Tx发送，根据比例系数50％可以确定终端在第一小区上支持2Tx共享，即终端在第一小区上使用2Tx进行发送，同时还可以在在第二小区上使用2Tx进行发送。
示例性的，第二信息可以包括终端在第一小区上进行通信时支持共享的接收通道/发送通道的数量。例如，第二信息中用于指示终端共享能力的参数为1Tx，假设终端在第一小区上最大支持2Tx发送，则终端在第一小区上支持1Tx共享，即终端在第一小区上使用1Tx进行发送，同时还可以在在第二小区上使用1Tx进行发送。
示例性的，第二信息可以包括MaxNumberTx参数、SharedNumberTx参数。其中，MaxNumberTx参数用于指示终端支持的最大收发能力，SharedNumberTx参数用于指示终端的收发共享能力。
示例的，第一用户识别卡(例如，SIM卡1)对应的参数可以包括：MaxRx1、MaxTx1、SharedRx1、SharedTx1。其中，MaxRx1代表第一用户识别卡对应的通信系统支持的最大接收能力。为描述简单，可以将用户识别卡支持的能力简述为用户识别卡的能力。MaxTx1代表第一用户识别卡支持的最大发送能力，SharedRx1代表第一用户识别卡是否支持共享接收天线，SharedTx1代表第一用户识别卡是否支持共享发送天线。例如，SharedRx1、SharedTx1可以是0或1，其中0表示不支持共享，1表示支持共享；或者，SharedRx1、SharedTx1可以是false或true，其中，false表示不支持共享，true表示支持共享。
第二用户识别卡(例如，SIM卡2)对应的参数可以包括：MaxRx2、MaxTx2、SharedRx2、SharedTx2。其中，MaxRx2代表第二用户识别卡支持的最大接收能力，MaxTx2代表第二用户识别卡支持的最大发送能力，SharedRx2代表第二用户识别卡是否支持共享接收天线，SharedTx2代表第二用户识别卡是否支持共享发送天线。参数说明同第一用户识别卡能力说明。
此外，MaxTx和MaxRx表示终端可以支持的最大发送通道和最大的接收通道。MaxTx1+MaxTx2＝<MaxTx，MaxRx1+MaxRx2＝<MaxRx。
以图2c为例：MaxTx＝2；MaxTx1＝1；SharedTx1＝1(或true)；MaxTx2＝2；SharedTx2＝0(或false)；
其中MaxTx2＝2中有一个Tx是SIM卡2专享的，另一个是SIM卡1共享的。当SIM卡1不使用时SIM卡2才能使用。
可选的，图6所示的所述方法还包括：所述终端向所述第一网络设备发送第三信息；所述第三信息用于请求所述第一信息。
可以理解的是，终端因为自身的业务需求决定离开第一用户识别卡对应的第一通信系统，即终端断开与第一通信系统的连接，接入第二用户识别卡对应的第二通信系统进行通信。终端可以向第一网络设备发送第三信息，请求与第一通信系统断开连接，并接入第二通信系统，与第二通信系统建立连接。第一网络设备从终端接收第三信息后，可以向终端发送第一信息，指示终端切换到第二通信系统，在第二小区上与第二网络设备进行通信。
可选的，所述第三信息还包括第一时长，所述第一时长为所述终端请求在所述第二小区进行通信的时长。
可选的，图6所示的方法还包括：终端获取第二时长，所述第二时长为所述终端被允许在所述第二小区进行通信的时长。示例性的，终端可以从第一网络设备接收第二时长。示例的，第一网络设备可以将第二时长携带在第一信息中向终端发送。终端在第二小区上进行通信的时长超过所述第二时长时，终端可以回到第一小区，与第一网络设备进行通信。所谓回到第一小区，可以是终端重新与第一网络设备建立RRC连接，在第一小区上与第一网络设备进行通信。或者终端在与第二小区进行通信时仍然维持与第一小区的RRC连接(或者称是RRC连接被挂起)，完成与第二小区通信后， 终端直接回到第一小区对应的通信系统，恢复RRC连接，在第一小区上与第一网络设备进行通信。
另示例性的，终端可以从第一网络设备接收第一定时器的信息，第一定时器用于限制终端被允许在所述第二小区进行通信的时长。终端可以根据第一定时器的信息启动第一定时器，当第一定时器超时，终端可以回到第一小区，与第一网络设备进行通信。
可以理解的是，第一时长是终端自身所请求的在第二小区进行通信的时长，第一网络设备最终允许终端在第二小区进行通信的时长与终端所请求的时长可以相同，也可以不相同。即上述第一时长与第二时长可以相同，也可以不同，本申请实施例对此不做限制。
可选的，在配置第一参数的第一种方式中，第一参数还可以包括：第一小区上激活的一个或多个第二BWP的信息。需要说明的，第二BWP是常规的BWP，与上述特殊BWP不同，当为第一小区配置的第二BWP被激活，终端可以在第一小区上通过激活的第二BWP进行正常的通信，例如，监听PDCCH、接收PDSCH、测量CSI、接收系统信息、发送PUSCH等。
可选的，在配置第一参数的第二种方式中，当某个时间单元上，为第一小区配置的第二BWP被激活，终端可以在第一小区上，通过为第一小区配置的第二BWP与第一网络设备进行通信。
可选的，在配置第一参数的第三种方式中，若第一参数指示的终端在第一小区上进行通信的收发能力等于终端所支持的最大收发能力，终端终端在第一小区上进行通信时使用终端的所有接收通道/发送通道。示例的，第一参数中指示支持终端在第一小区上使用2Tx进行上行发送，终端最大支持2Tx发送，终端在第一小区上通信时独享2Tx，使用2Tx在第二小区上进行上行发送。
本申请实时提供的方法中，第一网络设备还可以通过第一信息指示终端切换用户识别卡，终端接收第一信息后可以切换到第二用户识别卡，利用第二用户识别卡接入第二通信系统，与第二通信系统中的第二网络设备进行通信。网络侧可以获知终端切换用户识别卡的行为，当终端切换用户识别卡，与第一通信系统断开连接，第一通信系统可以暂停寻呼终端，避免因此造成的资源浪费；第一通信系统在调度是也可以暂时忽略该终端，避免因此造成调度数据的不准确。因此，本申请实施例提供的方法可以在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。
本申请实施例还提供一种通信系统切换方法，以双卡双待的终端为例，所述终端包括SIM卡1和SIM卡2两个SIM卡，所述终端可以利用SIM卡1与RAN1进行通信，可以利用SIM卡2与RAN2进行通信。其中，SIM卡1即本申请实施例所述的第一用户识别卡，RAN1即本申请实施例所述的第一通信系统，RAN1的网络设备(例如，基站)即本申请实施例所述的第一网络设备；SIM卡2即本申请实施例所述的第二用户识别卡，RAN2即本申请实施例所述的第二通信系统，RAN2的网络设备(例如，基站)即本申请实施例所述的第二网络设备。如图7所示，所述方法包括以下步骤：
701、终端利用SIM卡1与RAN1进行通信。
具体地，终端与RAN1建立RRC连接，进入RRC connected态。例如，终端可以在第一小区上接收RAN1的网络设备发送的数据，也可以在第一小区上向RAN1的网络设备发送数据。其中，第一小区是RAN1对应的小区，RAN1的网络设备为第一小区提供覆盖服务。
702、终端向RAN1的网络设备发送射频切换请求，该请求中包括终端请求的通信时长ΔT1。
具体地，当终端需要在SIM卡2对应的第二小区进行数据收发时，可以向RAN1的网络设备发送射频切换请求，请求切换至SIM卡2对应的通信系统。需要说明的是，第二小区是RAN2对应的小区，RAN2的网络设备为第二小区提供覆盖服务。
需要说明的是，射频切换请求可以是本申请实施例所述的第三信息，通信时长ΔT1可以是本申请实施例所述的第一时长，即终端请求在第二小区进行通信的时长。
示例性的，该射频切换请求可以承载在RRC消息中。
703、RAN1的网络设备向终端发送切换指示信息，该信息指示终端在第二小区上与RAN2的网络设备进行通信。
具体地，切换指示信息可以是本申请实施例所述的第一信息。RAN1的网络设备可以通过以下三种方式来指示终端从SIM卡1对应的第一小区切换到SIM卡2对应的第二小区上进行通信，具体如下：
第一种方式中，通过BWP的配置和BWP切换指示来指示终端从SIM卡1对应的第一小区切换到SIM卡2对应的第二小区上进行通信。
以下行接收为例，假设SIM卡1对应的第一小区为NR小区(即NR通信系统中5G基站的服务小区)，RAN1的网络设备为第一小区至少配置了两个下行BWP，一个为正常BWP(regular BWP，即本申请实施例所述的第一BWP)，另一个为特殊BWP(也可称为空闲BWP、暂停BWP，休眠BWP，本申请实施例对该BWP的名称不作限定)。当正常BWP激活时，终端工作在正常BWP上，进行正常的通信，例如，监听PDCCH、接收PDSCH、进行CSI测量、接收系统信息等。当特殊BWP(special BWP)时，不进行数据接收处理，例如，终端不监听PDCCH、不接收PDSCH、不进行CSI测量、不接收系统信息等。其中BWP切换指示可以通过下述中的一种实现：RRC信令指示、DCI指示、基于定时器的BWP切换或基于MAC层流程触发的BWP切换。
在步骤703中，切换指示信息可以包括被激活的特殊BWP的信息，终端接收切换指示信息之后确定为第一小区配置的特殊BWP被激活，终端在第一小区上不进行数据接收处理，可以切换到SIM卡2对应的第二小区上与RAN2的网络设备进行通信。当然，假设切换指示信息包括被激活的正常BWP的信息，终端在第一小区上进行正常的通信。
示例的，参考图8，BWP1为正常BWP，BWP2为特殊BWP。当RAN1的网络设备通过上述切换指示信息激活为第一小区配置的BWP2，终端切换到SIM卡2，在第二小区上与RAN2的网络设备进行通信。如图8所示，在T1时刻之前，BWP1被激活，T1时刻～T2时刻期间，为第一小区配置的BWP2被激活，终端在第二小区上与RAN2的网络设备进行通信，例如，接收RAN2的网络设备的寻呼(paging)。在T1时刻之后，BWP1被激活。
第二种方式中，通过BWP激活模式来指示终端从SIM卡1对应的第一小区切换到SIM卡2对应的第二小区上进行通信。BWP激活模式可以指示为第一小区配置的BWP在哪些时间单元上被激活，还可以指示为第二小区配置的BWP在哪些时间单元上被激活。
一个时间单元上，可以有一个激活的BWP。在某个时间单元上，若为第一小区配置的BWP被激活，终端则在第一小区上与RAN1的网络设备进行通信；若为第二小区配置的BWP被激活，终端则在第二小区上与RAN2的网络设备进行通信。
在步骤703中，切换指示信息指示了一个BWP激活模式，在该BWP激活模式中，第二小区在一个或多个时间单元上被激活。示例的，切换信息指示了BWP的时分复用(time division multiplexing，TDM)模式(pattern)。参考图9，TDM pattern指示周期内第一小区和第二小区上的BWP的激活状态。例如，‘1’表示BWP被激活，‘0’表示BWP去激活，或者，‘0’表示BWP被激活，‘1’表示BWP去激活。
具体实现中，可以用比特序列表示小区的BWP激活模式。假设一个比特序列对应一个时间单元，以4个时隙(slot)为例。切换指示信息包括0011，用于指示第一小区的BWP激活模式。参考图9，在第三个时隙和第四个时隙上，为第一小区配置的BWP被激活，终端在第一小区上与RAN1的网络设备进行通信。
当终端支持Q个SIM卡，SIM卡1、SIM卡2…SIM Q对应的小区依次为小区1、小区2…小区Q。切换指示信息可以指示Q个小区的BWP激活模式，例如，切换指示信息可以包括Q-1个比特序列，这Q-1个比特序列指示了Q-1个小区的BWP激活模式。可以对其他小区的比特序列取反获得最后一个小区的比特序列，从而确定该最后一个小区的BWP激活模式。
示例的，参考表1，终端支持SIM卡1、SIM卡2，SIM卡1对应的小区为第一小区，SIM卡2对应的小区为第二小区。表1示出了第一小区、第二小区在5个时间单元上的激活模式。具体地，第一小区对应的比特序列为“11011”，对“11011”取反可以得到第二小区的比特序列为“00100”。即在第一个时间单元、第二个时间单元、第四个时间单元以及第五个时间单元上，为第一小区配置的BWP被激活；在第三个时间单元上为第三小区配置的BWP被激活。
表1
小区 TDM pattern
第一小区 11011
第二小区 00100
需要说明的是，TDM pattern可以指示的是某个小区上是否有激活的BWP(上述常规BWP)，可以根据BWP激活机制指示具体激活的是哪个BWP。例如，网络设备通过RRC消息中的(firstActiveBWP)指示小区上第一个激活的BWP，后续还可以通过RRC配置、DCI、BWP定时器、MAC层的控制进行BWP的切换。
第三种方式中，网络侧可以通过控制终端在不同SIM卡上的收发参数(例如，接收参数或发送参数)，指示终端在不同SIM卡对应的小区上进行通信。
在步骤703中，切换指示信息可以包括终端在第一小区上的收发参数，终端可以根据终端在第一小区上的收发参数确定终端在第一小区上的收发能力，对比第一小区 上的收发参数和终端支持的最大收发能力，确定在第一小区上进行通信，或者，在第一小区和第二小区上进行通信。
如图2c所示，终端的SIM卡1和SIM卡2共享2Tx，即终端的两个发送通道是SIM卡1和SIM卡2和共享的。终端可以在步骤703之前向第一网络设备上报所述终端支持的最大收发能力和所述终端在SIM卡1上的收发共享能力。例如，终端在SIM卡1对应的第一小区上通信时支持2Tx，且其中1Tx是与其他系统共享的。即终端仅使用SIM卡1时，在第一小区上最大可以通过两个发送通道发送数据；终端使用SIM卡1和SIM卡2时，在第一小区上通过一个发送通道发送数据，在第二小区上通过另一个发送通道发送数据。
终端向第一网络设备上报的参数可以为“MaxNumberTx：2，SharedNumberTx:1”，其中，“MaxNumberTx：2”表示终端在SIM卡1对应的第一小区上通信时支持2Tx，“SharedNumberTx:1”表示终端支持与其他系统共享1Tx。
可选的，终端还可以上报其他能力参数来隐式表示终端在第一小区上的收发能力。例如，终端可以上报指示多输入多输出(multi-input multi-output，MIMO)层数的参数，可以是如下两个参数中的一个或多个：MaxNumberMIMO-LayersCB-PUSCH参数、maxNumberMIMO-LayersNonCB-PUSCH参数，这两个参数可以指示PUSCH支持的最大MIMO层数。例如，这两个参数为“2”，表示终端在第一小区上最大支持2Tx发送。
第一网络设备根据终端上报的参数确定终端在第一小区上的收发能力之后，还可以通过切换指示信息向终端指示第一小区上的收发参数。
具体实现中，第一网络设备还可以通过BWP配置参数携带第一小区上的收发参数，即上述切换指示信息可以是BWP配置参数。具体的，上行BWP的配置参数中有如下参数与上行发射天线个数有关：PUSCH-Config IE中的txConfig、codebookSubset、maxRank参数，或PUSCH-ServingCellConfigIE中的maxMIMO-Layers参数。第一网络设备可以通过这些参数指示终端在第一小区上的发送参数，例如，终端在第一小区上支持2Tx，即终端在第一小区上最大支持使用2个发送通道发送数据。
下行BWP的配置参数中有如下参数与下行接收天线个数有关：PDSCH-Config IE中的maxNrofCodeWordsScheduledByDCI参数。第一网络设备可以通过这些参数指示终端在第一小区上的接收参数，例如，终端在第一小区上支持2Rx，即终端在第一小区上最大支持使用2个接收通道接收数据。
示例的，参考图10，BWP1的配置参数中与发射天线个数有关的参数指示终端支持2Tx发送；BWP2的配置参数中与接收天线个数有关的参数指示终端仅支持1Tx发送。当从BWP1切换到BWP2时，即图10所示的T3时刻～T4时刻，终端可以支持在SIM卡1、SIM卡2上都进行数据发送，即终端在T3时刻～T4时刻，在第一小区与RAN1的网络设备进行通信，同时还可以在第二小区上与RAN2的网络设备进行通信。可见本申请实施例提供的方法，充分利用了终端的能力，提高了系统性能。
可选的，该切换指示信息还可以包括第二时长ΔT2，即终端被允许在第二小区进行通信的时长。第二时长可以认为是终端切换至SIM卡2后，利用SIM卡2进行通信的时长。需要说明的是，本申请实施例对第二时长ΔT2不作限定，例如，第二时长ΔT2 可以大于第一时长ΔT1，也可以小于或等于第一时长ΔT1。
需要说明的是，RAN1的网络设备根据终端通过切换指示信息指示的射频切换持续时长ΔT2与终端请求的ΔT1可以相同，也可以不同，本申请实施例对此不作限定。
704、终端在根据SIM卡2注册的通信系统的第二小区上与RAN2的网络设备进行通信。
具体地，终端可以根据步骤703的切换指示信息，确定可以在第二小区上与RAN2的网络设备进行通信。例如，切换指示信息指示为第一小区配置的特殊BWP被激活，终端则可以在第二小区上与RAN2的网络设备进行通信。或者，切换指示信息指示为第一小区配置的常规BWP未被激活，终端则可以在第二小区上与RAN2的网络设备进行通信。又或者，切换指示信息指示终端在第一小区上的收发能力小区终端支持的最大收发能力，SIM卡1和SIM卡2可以共享发送通道(或接收通道)，终端则可以在第二小区上与RAN2的网络设备进行通信，同时在第一小区上与RAN1的网络设备进行通信。
此外，终端还可以进行射频切换，所谓射频切换指的是切换接收通道和/或发送通道。以图2a所示的终端结构为例，步骤701中，终端的SIM卡1与射频电路连接，使用接收通道接收数据，使用发送通道发送数据。步骤704中，终端的SIM卡2与射频电路连接，使用接收通道接收数据，使用发送通道发送数据。
以图2b所示的终端结构为例，终端的SIM卡1和SIM卡2有独立的接收通道，SIM卡1和SIM卡2共享同一个发送通道。步骤701中，终端通过射频电路1、天线1组成的接收通道接收数据，通过射频电路1、天线1组成的发送通道发送数据。在步骤704中，终端通过射频电路2、天线2组成的接收通道接收数据，通过射频电路1、天线1组成的发送通道发送数据。
以图2c所示的终端结构为例，终端的SIM卡1和SIM卡2有独立的接收通道，独立的发送通道。步骤701中，终端通过射频电路1、天线1组成的接收通道接收数据，通过射频电路1、天线1组成的发送通道发送数据。在步骤704中，终端通过射频电路2、天线2组成的接收通道接收数据，通过射频电路2、天线2组成的发送通道发送数据。
需要说明的是，终端进行射频切换后可以在第二小区上进行数据的收发，例如，终端为RRC空闲(RRC idle)态时，可以接收RAN2的网络设备发送的寻呼消息。
705、当第二时长ΔT2满足后，终端回到第一小区，与RAN1的网络设备进行通信。
具体实现中，可以通过以下几种方式来控制第二时长ΔT2：
第一、当第二时长ΔT2满足后，RAN1的网络设备向终端发送BWP切换指示，BWP切换指示包括常规BWP的信息。终端接收所述BWP切换指示后，确定为第一小区配置的常规BWP被激活，从特殊BWP切换到常规BWP上。当为第一小区配置的常规BWP被激活，终端可以在第一小区上进行正常通行，因此终端可以进行射频切换，回到第一小区与RAN1的网络设备进行通信。
第二、终端可以根据从RAN1的网络设备获取到的定时器信息，启动定时器。该定时器用于限制终端被允许在第二小区进行通信的时长，当定时器超时，终端进行射 频切换，回到SIM卡1对应的通信系统。
第三、RAN1的网络设备可以向终端指示第二时长ΔT2。例如，可以在向终端发送的BWP切换指示中增加新的指示域，通过该指示域填充的值来指示第二时长ΔT2，第二时长ΔT2时间单位可以是以符号、时隙、子帧等，本申请实施例对比不做限制。
本申请实施例中，网络侧可以通过切换指示信息(即本申请实施例所述的第一信息)控制多SIM卡终端在不同SIM上的发送行为或接收行为，网络侧可以获知终端切换用户识别卡的行为，当终端切换用户识别卡，与SIM卡1对应的通信系统断开连接，SIM卡1的通信系统可以暂停寻呼终端，避免因此造成的资源浪费；SIM卡1的通信系统在调度是也可以暂时忽略该终端，避免因此造成调度数据的不准确。总之，本申请实施例提供的方法可以在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。
如图11所示，本申请又一实施例提供了一种装置110。该装置可以是终端，也可以是终端的部件(例如，集成电路，芯片等等)。该装置还可以是网络设备，也可以是网络设备的部件(例如，集成电路，芯片等等)。该装置也可以是其他通信单元，用于实现本申请方法实施例中的方法。该装置110可以包括:处理单元1102(处理模块)。可选的，还可以包括收发单元1101(收发模块)和存储单元1103(存储模块)。
在一种可能的设计中，如图11中的一个或者多个单元可能由一个或者多个处理器来实现，或者由一个或者多个处理器和存储器来实现；或者由一个或多个处理器和收发器实现；或者由一个或者多个处理器、存储器和收发器实现，本申请实施例对此不作限定。所述处理器、存储器、收发器可以单独设置，也可以集成。
所述装置具备实现本申请实施例描述的终端设备的功能，比如，所述装置包括终端设备执行本申请实施例描述的终端设备涉及步骤所对应的模块或单元或手段(means)，所述功能或单元或手段(means)可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。
或者所述装置具备实现本申请实施例描述的网络设备的功能，比如，所述装置包括所述网络设备执行本申请实施例描述的网络设备涉及步骤所对应的模块或单元或手段(means)，所述功能或单元或手段(means)可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。
可选的，本申请实施例中的装置110中各个模块可以用于执行本申请实施例中图6或图7描述的方法。
在一种可能的实施方式中，一种装置110可以包括处理单元1102和收发单元1101。
一种可能的设计中，收发单元1101接收来自第一网络设备的第一信息，所述第一信息包括终端(例如，装置110)在第一小区上与所述第一网络设备进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信；所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应。
处理单元1102可以对收发单元1101接收到的所述第一信息进行处理，从中获取第一参数。
收发单元1101可以在所述第二小区上与第二网络设备进行通信。
本申请实施例中，网络侧、终端侧(例如，上述装置110)对终端(装置110)切换用户识别卡对应通信系统的行为进行了统一，网络侧可以获知终端切换用户识别卡对应通信系统的行为，当终端从第一通信系统对应用户识别卡切换至第二通信系统对应的用户识别卡，与第一通信系统断开连接，第一通信系统可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费；总之，本申请实施例提供的方法可以在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。
一种可能的设计中，所述第一参数包括：所述第一小区上激活的一个或多个第一带宽部分BWP的信息。
本申请实施例中，网络设备可以通过第一参数指示激活的BWP，在激活的BWP上，终端(例如装置110)可以与第二小区进行通信，网络设备可以终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，所述第一参数指示所述第二小区上配置的BWP在一个或多个时间单元上被激活。
本申请实施例中，网络设备可以通过第一参数指示第二小区的PWP激活模式，即在哪些时间单元上第二小区上有激活的BWP。此外，在第二小区激活的BWP上，终端(例如装置110)可以与第二小区进行通信，可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，所述第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；
其中，所述第一比特序列对应N个时间单元，所述第一比特序列中的一个比特用于指示所述第一小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活，M小于等于N；所述第二比特序列对应所述N个时间单元，所述第二比特序列中的一个比特用于指示所述第二小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活。
本申请实施例中，可以通过比特序列指示第一小区上激活的BWP，和/或，第二小区上激活的BWP，在第一小区激活的BWP上，终端(例如装置110)可以与第一小区进行通信，在第二小区激活的BWP上，终端可以与第二小区进行通信，网络设备通过第一参数可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，所述第一参数指示所述终端在所述第一小区上的收发能力，所述终端在所述第一小区上的收发能力低于所述终端支持的最大收发能力。
本申请实施例中，还可以通过第一参数指示终端在第一小区上的收发能力，当该收发参数所指示的收发能力低于终端(例如装置110)所支持的最大收发能力，支持终端的第一用户识别卡和第二用户识别卡共享终端的接收通道或发送通道，支持终端在第一小区和第二小区上同时进行通信。网络设备通过第一参数可以控制终端切换用 户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，收发单元1101还可以向所述第一网络设备发送第二信息；所述第二信息用于指示所述终端支持的最大收发能力和所述终端的收发共享能力。
本申请实施例中，终端(例如装置110)还可以向网络设备上报自身的最大收发能力和收发共享能力，以便网络设备根据第一参数指示终端共享收发通道或切换收发通道，也就可以控制终端切换用户识别卡对应通信系统的行为。
一种可能的设计中，收发单元1101还可以向所述第一网络设备发送第三信息；所述第三信息用于请求所述第一信息。
本申请实施例中，终端(例如装置110)还可以在切换通信系统(SIM卡)之前向网络设备请求第一信息，进而可以根据第一信息切换到第二小区上进行通信。网络侧可以获知终端切换用户识别卡对应通信系统的行为，从而避免因此造成的资源浪费。
一种可能的设计中，所述第三信息包括第一时长，所述第一时长为所述终端请求在所述第二小区进行通信的时长。
本申请实施例中，终端(例如装置110)还可以向网络设备上报自身所请求的在第二小区进行通信的时长，以便网络设备根据终端的实际通信需求，限定终端从第一通信系统切换到第二通信系统进行通信的时长。
一种可能的设计中，收发单元1101还可以获取第二时长，所述第二时长为所述终端被允许在所述第二小区进行通信的时长。
本申请实施例中，终端(例如装置110)获取网络设备限定的在所述第二小区进行通信的时长，进而根据网络设备时长允许的时长内在第二小区进行通信，避免网络侧、终端侧(装置110)行为不一致，网络侧可以确定装置110切换用户识别卡对应通信系统的行为。
在另一种可能的实施方式中，一种装置110可包括处理单元1102和收发单元1101。
一种可能的设计中，处理单元1102生成第一信息；所述第一信息包括终端在第一小区上与第一网络设备(例如，上述装置110)进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信；所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应；
收发单元1101可以向所述终端发送所述第一信息。
本申请实施例中，网络侧(例如，上述装置110)、终端侧对终端切换用户识别卡对应通信系统的行为进行了统一，网络侧可以获知终端切换用户识别卡对应通信系统的行为，当终端切换用户识别卡，与第一通信系统断开连接，第一通信系统可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费；总之，本申请实施例提供的方法可以在一定程度上降低终端切换SIM卡时对通信系统的通信性能造成的影响。
一种可能的设计中，所述第一参数包括：所述第一小区上激活的一个或多个第一带宽部分BWP的信息。
本申请实施例中，网络设备(例如装置110)可以通过第一参数指示激活的BWP， 在激活的BWP上，终端可以与第二小区进行通信，可以终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，所述第一参数指示所述第二小区上配置的BWP在一个或多个时间单元上被激活。
本申请实施例中，网络设备(例如装置110)可以通过第一参数指示PWP激活模式，即在哪些时间单元上第二小区上有激活的BWP。此外，在第二小区激活的BWP上终端可以与第二小区进行通信，可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对该终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，所述第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；
其中，所述第一比特序列对应N个时间单元，所述第一比特序列中的一个比特用于指示所述第一小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活，M小于等于N；所述第二比特序列对应所述N个时间单元，所述第二比特序列中的一个比特用于指示所述第二小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活。
本申请实施例中，网络设备(例如装置110)可以通过比特序列指示第一小区上激活的BWP，和/或，第二小区上激活的BWP，在第一小区激活的BWP上，终端可以与第一小区进行通信，在第二小区激活的BWP上，终端可以与第二小区进行通信，通过第一参数可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，所述第一参数指示所述终端在所述第一小区上的收发能力，所述终端在所述第一小区上的收发能力低于所述终端支持的最大收发能力。
本申请实施例中，网络设备(例如装置110)还可以通过第一参数指示终端在第一小区上的收发能力，当该收发参数所指示的收发能力低于终端所支持的最大收发能力，支持终端的第一用户识别卡和第二用户识别卡共享终端的接收通道或发送通道，支持终端在第一小区和第二小区上同时进行通信。网络设备通过第一参数可以控制终端切换用户识别卡对应通信系统的行为，当终端与第一通信系统断开连接，网络设备可以暂停寻呼终端或暂停对终端的状态统计，避免因此造成的资源浪费。
一种可能的设计中，收发单元1101还可以从所述终端接收第二信息；所述第二信息用于指示所述终端支持的最大收发能力和所述终端的收发共享能力。
本申请实施例中，网络设备(例如装置110)获取终端的最大收发能力和终端的收发共享能力，以便根据第一参数指示终端共享收发通道或切换收发通道，也就可以控制终端切换用户识别卡对应通信系统的行为。
一种可能的设计中，收发单元1101还可以从所述终端接收第三信息；所述第三信息用于请求所述第一信息。
本申请实施例中，网络设备(例如装置110)还可以在终端切换通信系统(SIM 卡)之前，获取终端的请求，进而响应该请求向终端发送第一信息，终端根据第一信息切换到第二小区上进行通信。网络侧可以获知终端切换用户识别卡对应通信系统的行为，从而避免因此造成的资源浪费。
一种可能的设计中，所述第三信息还包括第一时长，所述第一时长为所述终端请求在所述第二小区进行通信的时长。
本申请实施例中，网络设备(例如装置110)还可以获取终端上报的在第二小区进行通信的时长，以便根据终端的实际通信需求，限定终端从第一通信系统切换到第二通信系统进行通信的时长。
一种可能的设计中，收发单元1101还可以向所述终端发送第二时长的信息，所述第二时长为所述终端被允许在所述第二小区进行通信的时长。
本申请实施例中，网络设备(例如装置110)可以限定终端在所述第二小区进行通信的时长，终端在网络设备时长允许的时长内通过第二小区进行通信，避免网络侧、终端侧行为不一致，网络侧可以确定终端切换用户识别卡对应通信系统的行为。
本申请实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有指令；指令用于执行如图6或图7描述的方法。
本申请实施例提供一种包括指令的计算机程序产品，当其在通信装置上运行时，使得通信装置实现如图6或图7描述的方法。
本申请实施例一种无线通信装置，包括：无线通信装置中存储有指令；当无线通信装置在图5a、图5b、图11所示的通信装置上运行时，使得通信装置实现如图6或图7所示的方法。该无线通信装置可以为芯片等。
可以理解的是，本申请实施例中的一些可选的特征，在某些场景下，可以不依赖于其他特征，比如其当前所基于的方案，而独立实施，解决相应的技术问题，达到相应的效果，也可以在某些场景下，依据需求与其他特征进行结合。相应的，本申请实施例中给出的装置也可以相应的实现这些特征或功能，在此不予赘述。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现所述的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
应理解，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。
本申请所描述的技术可通过各种方式来实现。例如，这些技术可以用硬件、软件或者硬件结合的方式来实现。对于硬件实现，用于在通信装置(例如，基站，终端、网络实体、或芯片)处执行这些技术的处理单元，可以实现在一个或多个通用处理器、DSP、数字信号处理器件、ASIC、可编程逻辑器件、FPGA、或其它可编程逻辑装置， 离散门或晶体管逻辑，离散硬件部件，或上述任何组合中。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请还提供了一种计算机可读介质，其上存储有计算机程序，该计算机程序被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
应理解，说明书通篇中提到的“实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各个实施例未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。应理解，在本申请的各种实施例中，上述各过程的序号的大小并不 意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
还应理解，在本申请中，“当…时”、“若”以及“如果”均指在某种客观情况下UE或者基站会做出相应的处理，并非是限定时间，且也不要求UE或基站实现时一定要有判断的动作，也不意味着存在其它限定。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。
本申请中对于使用单数表示的元素旨在用于表示“一个或多个”，而并非表示“一个且仅一个”，除非有特别说明。本申请中，在没有特别说明的情况下，“至少一个”旨在用于表示“一个或者多个”，“多个”旨在用于表示“两个或两个以上”。
另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种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这三种情况，其中A可以是单数或者复数，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。
本文中术语“……中的至少一个”或“……中的至少一种”，表示所列出的各项的全部或任意组合，例如，“A、B和C中的至少一种”，可以表示：单独存在A，单独存在B，单独存在C，同时存在A和B，同时存在B和C，同时存在A、B和C这六种情况，其中A可以是单数或者复数，B可以是单数或者复数，C可以是单数或者复数。
应理解，在本申请各实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
本申请中各表所示的对应关系可以被配置，也可以是预定义的。各表中的信息的取值仅仅是举例，可以配置为其他值，本申请并不限定。在配置信息与各参数的对应关系时，并不一定要求必须配置各表中示意出的所有对应关系。例如，本申请中的表格中，某些行示出的对应关系也可以不配置。又例如，可以基于上述表格做适当的变形调整，例如，拆分，合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称，其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时，也可以采用其他的数据结构，例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
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。
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。
本申请中各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法中的技术特征根据其内在的逻辑关系可以组合形成新的实施例、实施方式、实施方法、或实现方法。以上所述的本申请实施方式并不构成对本申请保护范围的限定。
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 (45)

  1. 一种通信系统切换方法，其特征在于，包括：
    终端接收来自第一网络设备的第一信息，所述第一信息包括所述终端在第一小区上与所述第一网络设备进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信；所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应；
    所述终端在所述第二小区上与第二网络设备进行通信。
  2. 根据权利要求1所述的方法，其特征在于，所述第一参数包括：所述第一小区上激活的一个或多个第一带宽部分BWP的信息。
  3. 根据权利要求1所述的方法，其特征在于，所述第一参数指示所述第二小区上配置的BWP在一个或多个时间单元上被激活。
  4. 根据权利要求3所述的方法，其特征在于，所述第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；
    其中，所述第一比特序列对应N个时间单元，所述第一比特序列中的一个比特用于指示所述第一小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活，M小于等于N；所述第二比特序列对应所述N个时间单元，所述第二比特序列中的一个比特用于指示所述第二小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活。
  5. 根据权利要求1所述的方法，其特征在于，所述第一参数指示所述终端在所述第一小区上的收发能力，所述终端在所述第一小区上的收发能力低于所述终端支持的最大收发能力。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    所述终端向所述第一网络设备发送第二信息；所述第二信息用于指示所述终端支持的最大收发能力和所述终端的收发共享能力。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述方法还包括：
    所述终端向所述第一网络设备发送第三信息；所述第三信息用于请求所述第一信息。
  8. 根据权利要求7所述的方法，其特征在于，所述第三信息包括第一时长，所述第一时长为所述终端请求在所述第二小区进行通信的时长。
  9. 根据权利要求7或8所述的方法，其特征在于，所述方法还包括：
    所述终端获取第二时长，所述第二时长为所述终端被允许在所述第二小区进行通信的时长。
  10. 一种通信系统切换方法，其特征在于，包括：
    第一网络设备生成第一信息；所述第一信息包括终端在第一小区上与所述第一网络设备进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信；所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应；
    所述第一网络设备向所述终端发送所述第一信息。
  11. 根据权利要求10所述的方法，其特征在于，所述第一参数包括：所述第一小 区上激活的一个或多个第一带宽部分BWP的信息。
  12. 根据权利要求10所述的方法，其特征在于，所述第一参数指示所述第二小区上配置的BWP在一个或多个时间单元上被激活。
  13. 根据权利要求12所述的方法，其特征在于，所述第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；
    其中，所述第一比特序列对应N个时间单元，所述第一比特序列中的一个比特用于指示所述第一小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活，M小于等于N；所述第二比特序列对应所述N个时间单元，所述第二比特序列中的一个比特用于指示所述第二小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活。
  14. 根据权利要求10所述的方法，其特征在于，所述第一参数指示所述终端在所述第一小区上的收发能力，所述终端在所述第一小区上的收发能力低于所述终端支持的最大收发能力。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述第一网络设备从所述终端接收第二信息；所述第二信息用于指示所述终端支持的最大收发能力和所述终端的收发共享能力。
  16. 根据权利要求10-15任一项所述的方法，其特征在于，所述方法还包括：
    所述第一网络设备从所述终端接收第三信息；所述第三信息用于请求所述第一信息。
  17. 根据权利要求16所述的方法，其特征在于，所述第三信息还包括第一时长，所述第一时长为所述终端请求在所述第二小区进行通信的时长。
  18. 根据权利要求17所述的方法，其特征在于，所述方法还包括：
    所述第一网络设备向所述终端发送第二时长的信息，所述第二时长为所述终端被允许在所述第二小区进行通信的时长。
  19. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自第一网络设备的第一信息，所述第一信息包括终端在第一小区上与所述第一网络设备进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信；所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应；
    处理单元，用于处理所述第一信息，获取所述第一参数；
    所述收发单元还用于，在所述第二小区上与第二网络设备进行通信。
  20. 根据权利要求19所述的装置，其特征在于，所述第一参数包括：所述第一小区上激活的一个或多个第一带宽部分BWP的信息。
  21. 根据权利要求19所述的装置，其特征在于，所述第一参数指示所述第二小区上配置的BWP在一个或多个时间单元上被激活。
  22. 根据权利要求21所述的装置，其特征在于，所述第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；
    其中，所述第一比特序列对应N个时间单元，所述第一比特序列中的一个比特用于指示所述第一小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上 被激活，M小于等于N；所述第二比特序列对应所述N个时间单元，所述第二比特序列中的一个比特用于指示所述第二小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活。
  23. 根据权利要求19所述的装置，其特征在于，所述第一参数指示所述终端在所述第一小区上的收发能力，所述终端在所述第一小区上的收发能力低于所述终端支持的最大收发能力。
  24. 根据权利要求23所述的装置，其特征在于，所述收发单元还用于，向所述第一网络设备发送第二信息；所述第二信息用于指示所述终端支持的最大收发能力和所述终端的收发共享能力。
  25. 根据权利要求19-24任一项所述的装置，其特征在于，所述收发单元还用于，向所述第一网络设备发送第三信息；所述第三信息用于请求所述第一信息。
  26. 根据权利要求25所述的装置，其特征在于，所述第三信息还包括第一时长，所述第一时长为所述终端请求在所述第二小区进行通信的时长。
  27. 根据权利要求25或26所述的装置，其特征在于，还包括处理单元，
    所述处理单元用于，获取第二时长，所述第二时长为所述终端被允许在所述第二小区进行通信的时长。
  28. 一种通信装置，其特征在于，包括：
    处理单元，用于生成第一信息；所述第一信息包括终端在第一小区上与第一网络设备进行通信的第一参数，所述第一参数指示所述终端在第二小区上进行通信；所述第一小区与所述终端的第一用户识别卡对应，所述第二小区与所述终端的第二用户识别卡对应；
    收发单元，用于向所述终端发送所述第一信息。
  29. 根据权利要求28所述的装置，其特征在于，所述第一参数包括：所述第一小区上激活的一个或多个第一带宽部分BWP的信息。
  30. 根据权利要求28所述的装置，其特征在于，所述第一参数指示所述第二小区上配置的BWP在一个或多个时间单元上被激活。
  31. 根据权利要求30所述的装置，其特征在于，所述第一参数包括长度为M的第一比特序列和/或长度为M的第二比特序列；
    其中，所述第一比特序列对应N个时间单元，所述第一比特序列中的一个比特用于指示所述第一小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活，M小于等于N；所述第二比特序列对应所述N个时间单元，所述第二比特序列中的一个比特用于指示所述第二小区上配置的BWP在所述N个时间单元中的一个或多个时间单元上被激活。
  32. 根据权利要求28所述的装置，其特征在于，所述第一参数指示所述终端在所述第一小区上的收发能力，所述终端在所述第一小区上的收发能力低于所述终端支持的最大收发能力。
  33. 根据权利要求32所述的装置，其特征在于，所述收发单元还用于，从所述终端接收第二信息；所述第二信息用于指示所述终端支持的最大收发能力和所述终端的收发共享能力。
  34. 根据权利要求28-33任一项所述的装置，其特征在于，所述收发单元还用于，从所述终端接收第三信息；所述第三信息用于请求所述第一信息。
  35. 根据权利要求34所述的装置，其特征在于，所述第三信息还包括第一时长，所述第一时长为所述终端请求在所述第二小区进行通信的时长。
  36. 根据权利要求35所述的装置，其特征在于，所述收发单元还用于，向所述终端发送第二时长的信息，所述第二时长为所述终端被允许在所述第二小区进行通信的时长。
  37. 一种通信装置，其特征在于，所述装置用于执行如权利要求1至9中任一项所述的方法。
  38. 一种通信装置，其特征在于，所述装置用于执行如权利要求10至18中任一项所述的方法。
  39. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1至9中任一项所述的方法。
  40. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求10至18中任一项所述的方法。
  41. 一种存储介质，其上存储有计算机程序或指令，其特征在于，所述计算机程序或指令被执行时使得计算机执行如权利要求1至9中任一项所述的方法。
  42. 一种存储介质，其上存储有计算机程序或指令，其特征在于，所述计算机程序或指令被执行时使得计算机执行如权利要求10至18中任一项所述的方法。
  43. 一种通信系统，包括：如权利要求19至27中任一项所述的装置，和/或，权利要求28至36中任一项所述的装置。
  44. 一种通信系统，包括：如权利要求37中所述的装置，和/或，权利要求38中所述的装置。
  45. 一种通信系统，包括：如权利要求39中所述的装置，和/或，权利要求40中所述的装置。
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