A communication method and device, network equipment, and terminal equipment

Abstract

An embodiment of the present application provides a communication method and apparatus, a network device, and a terminal device, the method comprising: a first base station receives a radio resource control (RRC) recovery request message sent by a terminal device, the first base station being a base station corresponding to a first communication card in the terminal device, the RRC recovery request message being used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; the first base station sends an RRC release message to the terminal device.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a communication method and apparatus, network equipment, and terminal equipment. Background Art

[0002] A dual-SIM phone is a phone that can hold two communication cards at the same time. Currently, if one communication card in a dual-SIM phone is in use and the other communication card also needs to be used, for example, the other communication card receives a paging call and needs to receive a service, or the other communication card initiates a service, there will be a conflict between the services of the two communication cards, and how to handle the service of the other communication card needs to be solved. Summary of the invention

[0003] The embodiments of the present application provide a communication method and apparatus, a network device, and a terminal device.

[0004] The communication method provided in the embodiment of the present application includes:

[0005] A first base station receives a radio resource control (RRC) recovery request message sent by a terminal device, wherein the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0006] The first base station sends an RRC release message to the terminal device, and the RRC release message carries first indication information.

[0007] The communication method provided in the embodiment of the present application includes:

[0008] A first base station receives an RRC recovery completion message sent by a terminal device, wherein the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery completion message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0009] The communication method provided in the embodiment of the present application includes:

[0010] The terminal device sends an RRC recovery request message to a first base station, where the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0011] The terminal device receives the RRC release message sent by the first base station.

[0012] The communication method provided in the embodiment of the present application includes:

[0013] The terminal device sends an RRC recovery completion message to the first base station, where the first base station is the base station corresponding to the first communication card in the terminal device. The RRC recovery completion message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0014] The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above communication method.

[0015] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above communication method.

[0016] The chip provided in the embodiment of the present application is used to implement the above-mentioned communication method.

[0017] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned communication method.

[0018] The computer-readable storage medium provided in the embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned communication method.

[0019] The computer program product provided in the embodiment of the present application includes computer program instructions, which enable a computer to execute the above-mentioned communication method.

[0020] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned communication method.

[0021] Through the above technical solution, on the one hand, the terminal device indicates that the terminal device does not respond to paging or indicates a busy indication of the terminal device through an RRC recovery request message (i.e., MSG3), and the first base station determines that the terminal device does not respond to paging or confirms receipt of the busy indication of the terminal device through an RRC release message (i.e., MSG4). On the other hand, the terminal device indicates that the terminal device does not respond to paging or indicates a busy indication of the terminal device through an RRC recovery completion message (i.e., MSG5). Since MSG4 and MSG5 are safe and reliable, the terminal device can achieve a safe and reliable sending of the indication of non-response to paging or a busy indication to the network side for the inactive communication card in dual-card operation, so that the network side stops unnecessary paging transmission, thereby saving air interface resources and saving energy consumption of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0024] Figure 2 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 1 ;

[0025] Figure 3 A schematic diagram of a dual communication card provided in an embodiment of the present application;

[0026] Figure 4 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 2 ;

[0027] Figure 5 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 3 ;

[0028] Figure 6 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 4 ;

[0029] Figure 7 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 5 ;

[0030] Figure 8 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 6 ;

[0031] Fig. 9 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0032] Fig.10 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 2 ;

[0033] Fig.11 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 3 ;

[0034] Fig.12 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 4 ;

[0035] Fig.13is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0036] Fig.14 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0037] Fig.15 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0040] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.

[0041] The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110. As used herein, "terminal" includes but is not limited to connecting via a wired line, such as via a Public Switched Telephone Networks (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal may refer to an access terminal, User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0042] Optionally, the terminals 120 may perform device-to-device (D2D) communication.

[0043] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0044] Figure 1 One network device and two terminals are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminals within its coverage area, which is not limited in the embodiments of the present application.

[0045] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0046] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal 120 with communication functions. The network device 110 and the terminal 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0047] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

[0049] With the pursuit of speed, latency, high-speed mobility, energy efficiency and the diversity and complexity of services in future life, the Third Generation Partnership Project (3GPP) rd The 3rd Generation Partnership Project (3GPP) international standard organization has begun to develop 5G. The main application scenarios of 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0050] On the one hand, eMBB still aims at users to obtain multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, in urban areas, and in rural areas, its capabilities and requirements vary greatly, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, power automation, remote medical operations (surgery), traffic safety, etc. Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of modules, etc.

[0051] RRC Status

[0052] In order to reduce air interface signaling and quickly restore wireless connections and data services, 5G defines a new Radio Resource Control (RRC) state, namely the RRC inactive (RRC_INACTIVE) state. This state is different from the RRC idle (RRC_IDLE) state and the RRC active (RRC_ACTIVE) state.

[0053] 1) RRC_IDLE state (abbreviated as idle state): Mobility is based on cell selection and reselection of terminal equipment, paging is initiated by the core network (CN), and the paging area is configured by the CN. There is no terminal equipment context on the base station side, and there is no RRC connection.

[0054] 2) RRC_CONNECTED state (referred to as connected state): There is an RRC connection, and there is a terminal device context on the base station side and the terminal device side. The network side knows the location of the terminal device at the specific cell level. The mobility is the mobility controlled by the network side. Unicast data can be transmitted between the terminal device and the base station.

[0055] 3) RRC_INACTIVE state (abbreviated as inactive state): Mobility is based on the cell selection reselection of the terminal device, there is a connection between the access network and the core network, the context of the terminal device exists on a base station, paging is triggered by the Radio Access Network (RAN), the paging area based on RAN is managed by RAN, and the network side knows the location of the terminal device based on the RAN paging area level. When the terminal device moves within the Radio Access Network Notification Area (RNA) configured by the RAN, it does not need to notify the network side, but when it moves out of the RNA, it needs to notify the network side.

[0056] Dual SIM dual standby / dual network dual standby

[0057] A dual-SIM dual-standby phone means that a phone can hold two communication cards at the same time, and both communication cards are in standby mode. Dual-SIM dual-standby generally refers to dual-SIM dual-standby of the same network standard, such as dual-SIM dual-standby of GSM network, dual-SIM dual-standby of CDMA network, and dual-SIM dual-standby of PHS network.

[0058] Dual-network dual-standby means that a mobile phone can be inserted with two communication cards of different networks at the same time and be turned on at the same time. Users can make calls, receive calls and send and receive text messages at will without switching networks.

[0059] At present, mobile phones generally do not support pure dual-transmit and dual-receive (abbreviated as dual-pass), which means that the mobile phone simultaneously sends uplink and receives downlink data on two networks through two communication cards. Generally speaking, most mobile phones only support single-transmit and single-receive or single-transmit and dual-receive, which means that the mobile phone can only execute the service on one communication card at a time. However, achieving dual-pass is a trend in the development of mobile phones in the future. In 5G, for the two communication cards of mobile phones that support dual-card dual standby or dual-network dual standby, one of the communication cards can reside in the LTE cell and the other communication card can reside in the NR cell; or, both communication cards reside in the NR cell. On the other hand, the two communication cards can be communication cards of the same operator or communication cards of different operators.

[0060] At present, if one communication card in a dual-SIM phone is performing a service and the other communication card also needs to perform a service, for example, the other communication card receives a paging call and needs to receive a service, or the other communication card initiates a service, there will be a problem of conflict between the services of the two communication cards, and how to handle the service of the other communication card and how to coordinate the services of the two communication cards need to be solved. To this end, the following technical solution of the embodiment of the present application is proposed.

[0061] It should be noted that the "terminal device" in the embodiments of the present application can be a mobile phone, a tablet computer, a wearable device, etc. The terminal device has at least two communication cards, for example, the terminal device has 2 communication cards or 3 communication cards, etc. The following embodiments are described using two communication cards as an example, but are not limited thereto. The solution with more than two communication cards is also applicable to the technical solution of the embodiments of the present application.

[0062] It should be noted that the embodiments of the present application do not limit the types of the first communication card and the second communication card. For example, the first communication card and the second communication card are both Subscriber Identity Module (SIM) cards. For example, the first communication card and the second communication card are both Universal Subscriber Identity Module (USIM) cards. For example, the first communication card is a SIM card, and the second communication card is a USIM card. For example, the first communication card is a USIM card, and the second communication card is a SIM card.

[0063] On the other hand, the embodiment of the present application does not limit the network types supported by the first communication card and the second communication card. For example, the first communication card supports the LTE network (that is, the first base station corresponding to the first communication card is an LTE base station), and the second communication card supports the NR network (that is, the second base station corresponding to the second communication card is an NR base station). For example, both the first communication card and the second communication card support the NR network (that is, the first communication card and the second communication card and the second base station corresponding to the second communication card are both NR base stations).

[0064] On the other hand, the embodiment of the present application does not limit the operators to which the first communication card and the second communication card belong. For example, the first communication card and the second communication card may belong to the same operator or different operators.

[0065] Figure 2 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 1 ,like Figure 2 As shown, the communication method comprises the following steps:

[0066] Step 201: The terminal device sends an RRC recovery request message to the first base station, and the first base station receives the RRC recovery request message sent by the terminal device. The first base station is the base station corresponding to the first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0067] In the embodiment of the present application, the terminal device has a first communication card and a second communication card, wherein the first communication card is in an inactive state, and the second communication card is in a connected state or an inactive state or an idle state. In an optional manner, the first communication card is in an inactive state, and the second communication card is in a connected state.

[0068] Reference Figure 3, the terminal device has a first communication card and a second communication card, wherein the network corresponding to the first communication card is the first network, and the network corresponding to the second communication card is the second network. On the one hand, the terminal device can access the first network through the first communication card to perform services on the first network. On the other hand, the terminal device can access the second network through the second communication card to perform services on the second network. Here, the types of the first network and the second network can be the same or different. For example, the first network is an LTE network, and the second network is an NR network. For another example, both the first network and the second network are NR networks.

[0069] In the embodiment of the present application, the first communication card of the terminal device is in an inactive state. The second communication card of the terminal device is in a connected state. For example, there are two USIM cards in the terminal device, namely USIM-A card and USIM-B card. Among them, USIM-A card has ongoing services and is in a connected state; USIM-B card is in an inactive state and receives a paging message.

[0070] It should be noted that the first network refers to the network corresponding to the first base station, and the second network refers to the network corresponding to the second base station. The communication between the terminal device and the first base station is realized through the first communication card, and the communication between the terminal device and the second base station is realized through the second communication card. For example: there are two USIM cards in the terminal device, namely USIM-A card and USIM-B card. Among them, the terminal device can communicate with the first base station through the USIM-A card, and the terminal device can communicate with the second base station through the USIM-B card.

[0071] In the embodiment of the present application, before the first base station receives the RRC recovery request message sent by the terminal device (that is, before the terminal device sends the RRC recovery request message to the first base station), the method further includes:

[0072] The first base station sends a paging message to the terminal device, and the terminal device receives the paging message sent by the first base station, where the paging message carries a paging reason; the paging reason is used by the non-access (NAS) layer or access (AS) layer of the terminal device to determine whether to respond to the paging message.

[0073] Here, optionally, the paging message is triggered by the anchor base station, and the paging cause in the paging message is notified to the anchor base station by the core network control plane network element. For example: when the downlink data of the terminal device reaches the anchor base station, the anchor base station triggers paging for the terminal device, and notifies the base stations within the RNA range (such as the first base station) to send a paging message to the terminal device. Here, the paging cause in the paging message is notified to the anchor base station by the core network control plane network element. Optionally, the core network control plane network element is AMF, and before the anchor base station notifies the first base station to send a paging message carrying the paging cause, the AMF notifies the anchor base station of the paging cause.

[0074] In the above scheme, the terminal device receives the paging message sent by the first base station, specifically: the AS layer of the first communication card of the terminal device receives the paging message sent by the first base station. Here, the paging message carries a paging cause (Pagingcasue), wherein the paging cause is used to indicate the service or cause that triggers the paging message, for example, the paging cause is used to indicate that the paging message is triggered by a voice call service or a video call service, etc.

[0075] In an embodiment of the present application, after the AS layer of the first communication card of the terminal device receives the paging message sent by the first base station, the NAS layer of the first communication card can determine whether to respond to the paging message based on the paging cause in the paging message, or the AS layer of the first communication card can determine whether to respond to the paging message based on the paging cause in the paging message. The following is explained in different situations. It should be noted that the AS layer in the following description refers to the AS layer of the first communication card, and the NAS layer refers to the NAS layer of the first communication card.

[0076] ● Case 1: The NAS layer of the terminal device determines whether to respond to the paging message based on the paging reason in the paging message.

[0077] For this case, the paging cause is transparent to the AS layer. After the AS layer of the terminal device receives the paging message sent by the first network, it sends the paging cause in the paging message to the NAS layer of the terminal device; the NAS layer of the terminal device determines whether to respond to the paging message based on the paging cause. For example: if the paging cause indicates that the paging is triggered by a voice service, it is determined to respond to the paging message, otherwise, it is not determined to respond to the paging message. For example: if the paging cause indicates that the paging is triggered by a low-priority service, it is determined not to respond to the paging message.

[0078] ● Case 2: The AS layer of the terminal device determines whether to respond to the paging message based on the paging reason in the paging message.

[0079] For this situation, the paging cause is opaque to the AS layer. After the AS layer of the terminal device receives the paging message sent by the first base station, it obtains the paging cause in the paging message; the AS layer of the terminal device determines whether to respond to the paging message based on the paging cause. For example: if the paging cause indicates that the paging is triggered by a voice service, it is determined to respond to the paging message, otherwise, the paging message is not responded to. For example: if the paging cause indicates that the paging is triggered by a low-priority service, it is determined not to respond to the paging message.

[0080] In the embodiment of the present application, for the first communication card in an inactive state, after receiving the paging message, the AS layer of the terminal device initiates the RRC connection recovery process. Specifically, the AS layer of the terminal device sends an RRC recovery request message to the first base station, wherein if the NAS layer or the AS layer of the terminal device determines not to respond to the paging message, then:

[0081] 1. Explicit indication mode: the RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates that the terminal device is busy. Or,

[0082] 2. Implicit indication method: The first logical channel identifier (Logical Channel Identifier, LCID) of the common control channel (Common Control Channel, CCCH) corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0083] Here, for the implicit indication mode, a new LCID (called the first LCID) is defined for CCCH.

[0084] Used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device. Specifically, the terminal device sends an RRC recovery request message through CCCH (that is, the RRC recovery request message is carried in CCCH), and the LCID of the CCCH is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device. Accordingly, the packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID, that is: the RRC recovery request message in the MAC TB includes carrying the first LCID.

[0085] Step 202: The first base station sends an RRC release message to the terminal device, and the terminal device receives the RRC release message sent by the first base station.

[0086] In an optional manner, when the first base station confirms receipt of a non-response paging indication or a busy indication (i.e., the content indicated by the RRC recovery request message) of the terminal device, the first base station sends an RRC release message to the terminal device. After the terminal device receives the RRC release message, it can be determined that the first base station confirms receipt of a non-response paging indication or a busy indication of the terminal device.

[0087] In another optional manner, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirms receipt of a busy indication of the terminal device. Here, when the first base station confirms receipt of a non-response paging indication or a busy indication of the terminal device (i.e., the content indicated by the RRC recovery request message), the first indication information is carried in the RRC release message sent to the terminal device. After the terminal device receives the RRC release message, it determines through the first indication information that the first base station confirms receipt of a non-response paging indication or a busy indication of the terminal device.

[0088] In the above scheme, the RRC release message is MSG4, which is a security-protected message. After the terminal device performs integrity protection verification on the RRC release message, it confirms that the first base station has received a non-response paging indication or a busy indication from the terminal device.

[0089] In the embodiment of the present application, after the first base station receives the RRC recovery request message sent by the terminal device, it performs an interactive operation with the anchor base station to request a context. The interactive operation is described below in combination with different situations.

[0090] ●Case where context is not migrated

[0091] The first base station sends a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0092] The first base station receives a context request failure message sent by the anchor base station, the context request failure message carries an RRC release message (i.e., RRCRelease PDCP PDU), the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirm receipt of a busy indication from the terminal device.

[0093] Then, the first base station sends an RRC release message to the terminal device, and the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirms receipt of a busy indication of the terminal device. Specifically, the first base station performs RLC and MAC encapsulation on the RRCRelease PDCPPDU obtained from the anchor base station according to the default SRB1 configuration, and then sends it to the terminal device through the physical layer.

[0094] Further, optionally, the anchor base station sends a third indication message to the core network control plane network element, the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data, and the third indication message is the same as or different from the second indication message. Here, optionally, the core network control plane network element is AMF, the core network user plane network element is UPF, the anchor base station sends the third indication message to AMF, and the AMF notifies the UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data of the terminal device according to the third indication message.

[0095] ● Migrate context

[0096] The first base station sends a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0097] The first base station receives a context request response message sent by the anchor base station, where the context request response message carries context information.

[0098] Then, the first base station sends an RRC release message to the terminal device, and the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirm receipt of a busy indication from the terminal device.

[0099] Further, optionally, the first base station sends third indication information to the core network control plane network element (optionally, the third indication information is carried in the path switching request message), the third indication information is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data, and the third indication information is the same as or different from the second indication information. Here, optionally, the core network control plane network element is AMF, the core network user plane network element is UPF, the first base station sends the third indication information to AMF, and AMF notifies UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data of the terminal device according to the third indication information.

[0100] In the above technical solution of the embodiment of the present application, the terminal device indicates that the terminal device does not respond to paging or indicates a busy indication of the terminal device through an RRC recovery request message (i.e., MSG3), and the first base station determines that the terminal device does not respond to paging or confirms receipt of the busy indication of the terminal device through an RRC release message (i.e., MSG4). Since MSG4 is safe and reliable, the terminal device can send the indication of not responding to paging or the busy indication to the network side safely and reliably for the inactive communication card in dual-card operation, so that the network side stops unnecessary paging transmission, thereby saving air interface resources and saving energy consumption of the terminal device.

[0101] Figure 4 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 2 ,like Figure 4 As shown, the communication method comprises the following steps:

[0102] Step 401: The terminal device sends an RRC recovery completion message to the first base station, and the first base station receives the RRC recovery completion message sent by the terminal device. The first base station is the base station corresponding to the first communication card in the terminal device. The RRC recovery completion message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0103] In the embodiment of the present application, the terminal device has a first communication card and a second communication card, wherein the first communication card is in an inactive state, and the second communication card is in a connected state or an inactive state or an idle state. In an optional manner, the first communication card is in an inactive state, and the second communication card is in a connected state.

[0104] In the embodiment of the present application, before the first base station receives the RRC recovery completion message sent by the terminal device, the method further includes:

[0105] The first base station sends a paging message to the terminal device, where the paging message carries a paging reason; the paging reason is used by the NAS layer or AS layer of the terminal device to determine whether to respond to the paging message.

[0106] Here, optionally, the paging message is triggered by an anchor base station, and the paging reason in the paging message is notified to the anchor base station by a core network control plane network element.

[0107] In an embodiment of the present application, after the AS layer of the first communication card of the terminal device receives the paging message sent by the first base station, the NAS layer of the first communication card can determine whether to respond to the paging message based on the paging cause in the paging message, or the AS layer of the first communication card can determine whether to respond to the paging message based on the paging cause in the paging message. For details, please refer to the description of the aforementioned related schemes.

[0108] In the embodiment of the present application, for the first communication card in an inactive state, after receiving the paging message, the AS layer of the terminal device initiates the RRC connection recovery process. Specifically, the AS layer of the terminal device sends an RRC recovery request message to the first base station, wherein if the NAS layer or the AS layer of the terminal device determines not to respond to the paging message, then:

[0109] 1. Explicit indication mode: the RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates that the terminal device is busy. Or,

[0110] 2. Implicit indication method: The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0111] Here, for the implicit indication method, a new LCID (called the first LCID) is defined for CCCH, and this new LCID is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device. Specifically, the terminal device sends an RRC recovery request message through CCCH (that is, the RRC recovery request message is carried in CCCH), and the LCID of the CCCH is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device. Correspondingly, the packet header corresponding to the RRC recovery request message in MACTB is the first packet header, and the LCID in the first packet header is the first LCID, that is: the RRC recovery request message in MAC TB includes carrying the first LCID.

[0112] In the embodiment of the present application, after the first base station receives the RRC recovery request message sent by the terminal device, it performs some interactive operations with the terminal device and the anchor base station. The interactive operations are explained in combination with different situations below.

[0113] ● Migrate context

[0114] The terminal device sends an RRC recovery request message to the first base station, and the first base station receives the RRC recovery request message sent by the terminal device; optionally, the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0115] The first base station sends a context request message to the anchor base station; optionally, the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0116] The first base station receives a context request response message sent by the anchor base station, where the context request response message carries context information;

[0117] The first base station sends an RRC recovery message to the terminal device, and the terminal device receives the RRC recovery message sent by the first base station, where the RRC recovery message is used to trigger the terminal device to enter a connected state.

[0118] Then, the first base station receives an RRC recovery completion message sent by the terminal device, where the RRC recovery completion message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0119] After the first base station receives the RRC recovery completion message sent by the terminal device, the first base station sends an RRC release message to the terminal device, and the terminal device receives the RRC release message sent by the first base station. Optionally, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirms receipt of a busy indication of the terminal device.

[0120] In an optional manner, the first base station sends third indication information to the core network control plane network element (optionally, the third indication information is carried in a path switching request message), the third indication information is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data, and the third indication information is the same as or different from the second indication information. Here, optionally, the core network control plane network element is AMF, the core network user plane network element is UPF, the first base station sends the third indication information to AMF, and AMF notifies UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data of the terminal device according to the third indication information.

[0121] ●Case where context is not migrated

[0122] The first base station receives an RRC recovery request message sent by the terminal device; optionally, a busy indication for indicating that the terminal device does not respond to paging or indicates that the terminal device is busy;

[0123] The first base station sends a context request message to the anchor base station; optionally, the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0124] The first base station receives a context request failure message sent by the anchor base station, where the context request failure message carries an RRC recovery message and / or an RRC release message; optionally, the RRC recovery message and / or the RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirmation that a busy indication of the terminal device is received;

[0125] The first base station sends an RRC recovery message to the terminal device, where the RRC recovery message is used to trigger the terminal device to enter a connected state.

[0126] Then, the first base station receives an RRC recovery complete message sent by the terminal device, the RRC recovery complete message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device. Optionally, the RRC recovery complete message also carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0127] After the first base station receives the RRC recovery completion message sent by the terminal device, the first base station sends second indication information to the anchor base station, the second indication information is used to indicate that the terminal device does not respond to paging or the busy indication of the terminal device; the first base station sends an RRC release message to the terminal device. Optionally, the RRC release message carries the first indication information, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirmation that the busy indication of the terminal device is received.

[0128] In an optional manner, the anchor base station sends a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data, and the third indication message is the same as or different from the second indication message. Here, optionally, the core network control plane network element is AMF, and the core network user plane network element is UPF. The anchor base station sends the third indication message to the AMF, and the AMF notifies the UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data of the terminal device according to the third indication message.

[0129] In the above technical solution of the embodiment of the present application, the terminal device indicates that the terminal device does not respond to paging or indicates a busy indication of the terminal device through the RRC recovery completion message (i.e., MSG5). Since MSG5 is safe and reliable, the terminal device can send the indication of not responding to paging or the busy indication to the network side safely and reliably for the inactive communication card in dual-card operation, so that the network side stops unnecessary paging transmission, thereby saving air interface resources and saving energy consumption of the terminal device.

[0130] The technical solution of the embodiment of the present application is illustrated below in conjunction with a specific application example. It should be noted that the target base station in the following embodiment refers to the first base station in the above solution.

[0131] Application Example 1

[0132] Figure 5 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 3 ,like Figure 5 As shown, the communication method comprises the following steps:

[0133] Step 501: The terminal device sends an RRC recovery request message to the target base station. The RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0134] Here, the terminal device sends an RRC recovery request message to the target base station through SRB0, wherein, optionally, the RRC recovery request message carries a short MAC-I and I-RNTI.

[0135] Step 502: The target base station sends a context request message to the anchor base station, where the context request message carries second indication information.

[0136] Here, the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0137] Step 503: The anchor base station determines not to migrate the context of the terminal device according to the second indication information.

[0138] Step 504: the anchor base station sends a context request failure message to the target base station, the context request failure message carries an RRC release message, and the RRC release message carries the first indication information.

[0139] Here, the RRC release message is carried in the RRCRelease PDCP PDU.

[0140] Here, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0141] Step 505: The target base station sends an RRC release message to the terminal device, and the RRC release message carries the first indication information.

[0142] Here, the target base station sends an RRC release message to the terminal device through SRB1. After receiving the RRC release message, the terminal device enters an inactive state or an idle state. Specifically, the target base station continues to perform RLC and MAC encapsulation of the RRCReleasePDCP PDU received from the anchor base station according to the default SRB1 configuration, and sends it to the terminal device through the physical layer.

[0143] Here, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0144] Step 506: The anchor base station sends third indication information to the AMF.

[0145] Here, the third indication information is used by AMF to notify UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication information is the same as or different from the second indication information.

[0146] Step 507: AMF notifies UPF to stop sending downlink data to the terminal device and cache the downlink data.

[0147] Application Example 2

[0148] Figure 6 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 4 ,like Figure 6 As shown, the communication method comprises the following steps:

[0149] Step 601: The terminal device sends an RRC recovery request message to the target base station. The RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0150] Here, the terminal device sends an RRC recovery request message to the target base station through SRB0, wherein, optionally, the RRC recovery request message carries a short MAC-I and I-RNTI.

[0151] Step 602: The target base station sends a context request message to the anchor base station, where the context request message carries second indication information.

[0152] Here, the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0153] Step 603: The anchor base station determines the context of the migrating terminal device according to the second indication information.

[0154] Step 604: The anchor base station sends a context request response message to the target base station.

[0155] Here, the context request response message carries the context information of the terminal device.

[0156] Step 605: The target base station sends an RRC release message to the terminal device, and the RRC release message carries the first indication information.

[0157] Here, the target base station sends an RRC release message to the terminal device via SRB1. After receiving the RRC release message, the terminal device enters an inactive state or an idle state.

[0158] Here, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0159] Step 606: The anchor base station sends third indication information to the AMF.

[0160] Here, the third indication information is carried in the path switching request message.

[0161] Here, the third indication information is used by AMF to notify UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication information is the same as or different from the second indication information.

[0162] Step 607: AMF notifies UPF to stop sending downlink data to the terminal device and cache the downlink data.

[0163] Application Example 3

[0164] Figure 7 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 5 ,like Figure 7 As shown, the communication method comprises the following steps:

[0165] Step 701: The terminal device sends an RRC recovery request message to the target base station. Optionally, the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0166] Here, the terminal device sends an RRC recovery request message to the target base station through SRB0, wherein, optionally, the RRC recovery request message carries a short MAC-I and I-RNTI.

[0167] Step 702: The target base station sends a context request message to the anchor base station. Optionally, the context request message carries second indication information.

[0168] Here, the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0169] Step 703: The anchor base station determines the context of the migrating terminal device.

[0170] Step 704: The anchor base station sends a context request response message to the target base station.

[0171] Here, the context request response message carries the context information of the terminal device.

[0172] Step 705: The target base station sends an RRC recovery message to the terminal device.

[0173] Here, after receiving the RRC recovery message, the terminal device enters the connected state.

[0174] Step 706: The terminal device sends an RRC recovery completion message to the target base station, and the RRC recovery completion message carries the second indication information.

[0175] Here, the terminal device sends an RRC recovery complete message to the target base station via SRB 1. The RRC recovery complete message carries a short MAC-I and I-RNTI.

[0176] Here, the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0177] Step 707: The target base station sends an RRC release message to the terminal device. Optionally, the RRC release message carries first indication information.

[0178] Here, the target base station sends an RRC release message to the terminal device via SRB1. After receiving the RRC release message, the terminal device enters an inactive state or an idle state.

[0179] Here, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0180] Step 708: The target base station sends third indication information to the AMF.

[0181] Here, the third indication information is carried in the path switching request message.

[0182] Here, the third indication information is used by AMF to notify UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication information is the same as or different from the second indication information.

[0183] Step 709: AMF notifies UPF to stop sending downlink data to the terminal device and cache the downlink data.

[0184] Application Example 4

[0185] Figure 8 This is a flow chart of the communication method provided in the embodiment of the present application. Figure 6 ,like Figure 8 As shown, the communication method comprises the following steps:

[0186] Step 801: The terminal device sends an RRC recovery request message to the target base station. Optionally, the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0187] Here, the terminal device sends an RRC recovery request message to the target base station through SRB0, wherein, optionally, the RRC recovery request message carries a short MAC-I and I-RNTI.

[0188] Step 802: The target base station sends a context request message to the anchor base station. Optionally, the context request message carries second indication information.

[0189] Here, the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0190] Step 803: The anchor base station decides not to migrate the context of the terminal device.

[0191] Step 804: the anchor base station sends a context request failure message to the target base station, where the context request failure message carries an RRC recovery message and / or an RRC release message. Optionally, the RRC recovery message and / or the RRC release message carries the first indication information.

[0192] Here, the RRC recovery message is carried in the RRCResume PDCP PDU.

[0193] Here, the RRC release message is carried in the RRCRelease PDCP PDU.

[0194] Here, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0195] Step 805: The target base station sends an RRC recovery message to the terminal device. Optionally, the RRC recovery message carries first indication information.

[0196] Here, the target base station sends an RRC recovery message to the terminal device via SRB1.

[0197] Here, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0198] Here, after receiving the RRC recovery message, the terminal device enters the connected state.

[0199] Step 806: The terminal device sends an RRC recovery completion message to the target base station, and the RRC recovery completion message carries the second indication information.

[0200] Here, the terminal device sends an RRC recovery completion message to the target base station through SRB1.

[0201] Here, the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0202] Optionally, the RRC recovery completion message also carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirm receipt of a busy indication from the terminal device.

[0203] Step 807: The target base station sends second indication information to the anchor base station.

[0204] Here, the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0205] Step 808: The target base station sends an RRC release message to the terminal device. Optionally, the RRC release message carries first indication information.

[0206] Here, the target base station sends an RRC release message to the terminal device via SRB1. After receiving the RRC release message, the terminal device enters an inactive state or an idle state.

[0207] Here, the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0208] Step 809: The anchor base station sends third indication information to the AMF.

[0209] Here, the third indication information is used by AMF to notify UPF to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication information is the same as or different from the second indication information.

[0210] Step 810: AMF notifies UPF to stop sending downlink data to the terminal device and cache the downlink data.

[0211] It should be noted that in all the solutions of the embodiments of the present application, the second indication information may also be referred to as busy indication information or non-response paging indication information. The first indication information may also be referred to as busyindication confirmation indication information or confirmation non-response paging indication information.

[0212] Fig. 9 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 1 , applied to the first base station, such as Fig. 9 As shown, the communication device includes:

[0213] A receiving unit 901 is configured to receive an RRC recovery request message sent by a terminal device, wherein the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0214] The sending unit 902 is used to send an RRC release message to the terminal device.

[0215] In an optional manner, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0216] In an optional manner, the RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0217] In an optional manner, the first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0218] In an optional manner, the packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

[0219] In an optional manner, the sending unit 902 is further used to send a paging message to the terminal device, and the paging message carries a paging reason; the paging reason is used by the NAS layer or AS layer of the terminal device to determine whether to respond to the paging message.

[0220] In an optional manner, the paging message is triggered by an anchor base station, and the paging reason in the paging message is notified to the anchor base station by a core network control plane network element.

[0221] In an optional manner, the sending unit 902 is further used to send a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0222] The receiving unit 901 is also used to receive a context request failure message sent by the anchor base station, the context request failure message carries an RRC release message, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirm receipt of a busy indication of the terminal device.

[0223] In an optional manner, a third indication information is sent by the anchor base station to the core network control plane network element, and the third indication information is used by the core network control plane network element to notify the core network user plane network element to stop sending downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication information is the same as or different from the second indication information.

[0224] In an optional manner, the sending unit 902 is further used to send a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0225] The receiving unit 901 is further configured to receive a context request response message sent by the anchor base station, where the context request response message carries context information.

[0226] In an optional manner, the sending unit 902 is also used to send a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

[0227] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood by referring to the relevant description of the communication method in the embodiment of the present application.

[0228] Fig.10 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 2 , applied to the first base station, such as Fig.10 As shown, the communication device includes:

[0229] The receiving unit 1001 is used to receive an RRC recovery completion message sent by a terminal device, wherein the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery completion message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0230] In an optional manner, the device further includes: a sending unit 1002;

[0231] The receiving unit is further configured to receive an RRC recovery request message sent by the terminal device;

[0232] The sending unit 1002 is configured to send a context request message to an anchor base station;

[0233] The receiving unit 1001 is further configured to receive a context request response message sent by the anchor base station, where the context request response message carries context information;

[0234] The sending unit 1002 is further used to send an RRC recovery message to the terminal device, and the RRC recovery message is used to trigger the terminal device to enter a connected state.

[0235] In an optional manner, the sending unit 1002 is further used to send an RRC release message to the terminal device.

[0236] In an optional manner, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0237] In an optional manner, the sending unit 1002 is also used to send a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

[0238] In an optional manner, the device further includes: a sending unit 1002;

[0239] The receiving unit 1001 is further configured to receive an RRC recovery request message sent by the terminal device;

[0240] The sending unit 1002 is configured to send a context request message to an anchor base station;

[0241] The receiving unit 1001 is further configured to receive a context request failure message sent by the anchor base station, where the context request failure message carries an RRC recovery message and / or an RRC release message;

[0242] The sending unit 1002 is further used to send an RRC recovery message to the terminal device, and the RRC recovery message is used to trigger the terminal device to enter a connected state.

[0243] In an optional manner, the RRC recovery message and / or the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0244] In an optional manner, the RRC recovery completion message also carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device.

[0245] In an optional manner, the sending unit 1002 is further used to send a second indication message to the anchor base station, where the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device; and to send an RRC release message to the terminal device.

[0246] In an optional manner, a third indication message is sent by the anchor base station to a core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same or different from the second indication message.

[0247] In an optional manner, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0248] In an optional manner, the RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0249] In an optional manner, the first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0250] In an optional manner, the packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

[0251] In an optional manner, the context request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0252] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood by referring to the relevant description of the communication method in the embodiment of the present application.

[0253] Fig.11 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 3 , applied to terminal devices such as Fig.11 As shown, the communication device includes:

[0254] A sending unit 1101 is configured to send an RRC recovery request message to a first base station, where the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device;

[0255] The receiving unit 1102 is used to receive an RRC release message sent by the first base station.

[0256] In an optional manner, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0257] In an optional manner, the device further includes:

[0258] A processing unit (not shown in the figure) is used to confirm that the first base station has received a non-response paging indication or a busy indication from the terminal device after performing integrity protection verification on the RRC release message.

[0259] In an optional manner, the RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0260] In an optional manner, the first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0261] In an optional manner, the packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

[0262] In an optional manner, the receiving unit 1102 is further used to receive a paging message sent by the first base station, and the paging message carries a paging reason; the paging reason is used by the NAS layer or AS layer of the terminal device to determine whether to respond to the paging message.

[0263] In an optional manner, the paging message is triggered by an anchor base station, and the paging reason in the paging message is notified to the anchor base station by a core network control plane network element.

[0264] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood by referring to the relevant description of the communication method in the embodiment of the present application.

[0265] Fig.12 The structure of the communication device provided in the embodiment of the present application is shown in FIG. Figure 4 , applied to terminal devices such as Fig.12 As shown, the communication device includes:

[0266] The sending unit 1201 is used to send an RRC recovery completion message to a first base station, where the first base station is a base station corresponding to a first communication card in the terminal device. The RRC recovery completion message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0267] In an optional manner, the device further includes: a receiving unit 1202;

[0268] The sending unit 1201 is further configured to send an RRC recovery request message to the first base station;

[0269] The receiving unit 1202 is used to receive an RRC recovery message sent by the first base station, and the RRC recovery message is used to trigger the terminal device to enter a connected state.

[0270] In an optional manner, the receiving unit 1202 is further used to receive an RRC release message sent by the first base station.

[0271] In an optional manner, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

[0272] In an optional manner, the RRC recovery completion message also carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device.

[0273] In an optional manner, the RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

[0274] In an optional manner, the first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

[0275] In an optional manner, the packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

[0276] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood by referring to the relevant description of the communication method in the embodiment of the present application.

[0277] Fig.13 1300 is a schematic structural diagram of a communication device 1300 provided in an embodiment of the present application. The communication device may be a terminal device or a network device. Fig.13 The communication device 1300 shown includes a processor 1310, and the processor 1310 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0278] Alternatively, if Fig.13As shown, the communication device 1300 may further include a memory 1320. The processor 1310 may call and run a computer program from the memory 1320 to implement the method in the embodiment of the present application.

[0279] The memory 1320 may be a separate device independent of the processor 1310 , or may be integrated into the processor 1310 .

[0280] Alternatively, if Fig.13 As shown, the communication device 1300 may further include a transceiver 1330, and the processor 1310 may control the transceiver 1330 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0281] The transceiver 1330 may include a transmitter and a receiver. The transceiver 1330 may further include an antenna, and the number of antennas may be one or more.

[0282] Optionally, the communication device 1300 may specifically be a network device of an embodiment of the present application, and the communication device 1300 may implement corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0283] Optionally, the communication device 1300 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 1300 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0284] Fig.14 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.14 The chip 1400 shown includes a processor 1410, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0285] Alternatively, if Fig.14 As shown, the chip 1400 may further include a memory 1420. The processor 1410 may call and run a computer program from the memory 1420 to implement the method in the embodiment of the present application.

[0286] The memory 1420 may be a separate device independent of the processor 1410 , or may be integrated into the processor 1410 .

[0287] Optionally, the chip 1400 may further include an input interface 1430. The processor 1410 may control the input interface 1430 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0288] Optionally, the chip 1400 may further include an output interface 1440. The processor 1410 may control the output interface 1440 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0289] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0290] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0291] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0292] Fig.15 1 is a schematic block diagram of a communication system 1500 provided in an embodiment of the present application. Fig.15 As shown, the communication system 1500 includes a terminal device 1510 and a network device 1520 .

[0293] Among them, the terminal device 1510 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1520 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0294] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0295] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0296] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), 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 link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0297] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0298] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0299] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0300] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0301] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0302] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0303] The embodiment of the present application also provides a computer program.

[0304] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0305] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0306] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0307] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0308] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0309] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0310] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0311] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0312] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, the method comprising: A first base station receives a radio resource control RRC recovery request message sent by a terminal device, where the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The first base station sends an RRC release message to the terminal device; After the first base station receives the RRC recovery request message sent by the terminal device, the method further includes: The first base station sends a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The first base station receives a context request failure message sent by the anchor base station, the context request failure message carries an RRC release message, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirm receipt of a busy indication from the terminal device.

2. The method according to claim 1, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

3. The method according to claim 1 or 2, wherein: The RRC recovery request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

4. The method according to claim 1 or 2, wherein: The first logical channel identifier LCID of the common control channel CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

5. The method according to claim 4, wherein: The packet header corresponding to the RRC recovery request message in the media access control transport block MACTB is the first packet header, and the LCID in the first packet header is the first LCID.

6. The method according to claim 1 or 2, wherein: Before the first base station receives the RRC recovery request message sent by the terminal device, the method further includes: The first base station sends a paging message to the terminal device, where the paging message carries a paging reason; the paging reason is used by the non-access NAS layer or the access AS layer of the terminal device to determine whether to respond to the paging message.

7. The method according to claim 6, wherein: The paging message is triggered by the anchor base station, and the paging reason in the paging message is notified to the anchor base station by the core network control plane network element.

8. The method according to claim 1, wherein: The method further comprises: The anchor base station sends a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

9. The method according to claim 1 or 2, wherein: After the first base station receives the RRC recovery request message sent by the terminal device, the method further includes: The first base station sends a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The first base station receives a context request response message sent by the anchor base station, where the context request response message carries context information.

10. The method according to claim 9, wherein: The method further comprises: The first base station sends a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

11. A communication method, the method comprising: The first base station receives an RRC recovery completion message sent by the terminal device, where the first base station is a base station corresponding to the first communication card in the terminal device, and the RRC recovery completion message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; Before the first base station receives the RRC recovery completion message sent by the terminal device, the method further includes: The first base station receives an RRC recovery request message sent by the terminal device; The first base station sends a context request message to the anchor base station; The first base station receives a context request failure message sent by the anchor base station, where the context request failure message carries an RRC recovery message and / or an RRC release message; The first base station sends an RRC recovery message to the terminal device, where the RRC recovery message is used to trigger the terminal device to enter a connected state.

12. The method according to claim 11, wherein: Before the first base station receives the RRC recovery completion message sent by the terminal device, the method further includes: The first base station receives an RRC recovery request message sent by the terminal device; The first base station sends a context request message to the anchor base station; The first base station receives a context request response message sent by the anchor base station, where the context request response message carries context information; The first base station sends an RRC recovery message to the terminal device, where the RRC recovery message is used to trigger the terminal device to enter a connected state.

13. The method according to claim 12, wherein: After the first base station receives the RRC recovery completion message sent by the terminal device, the method further includes: The first base station sends an RRC release message to the terminal device.

14. The method according to claim 13, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

15. The method according to any one of claims 12 to 14, wherein: The method further comprises: The first base station sends a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

16. The method according to claim 11, wherein: The RRC recovery message and / or the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication of the terminal device.

17. The method according to claim 11, wherein: The RRC recovery completion message also carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device.

18. The method according to any one of claims 11 to 14, wherein: After the first base station receives the RRC recovery completion message sent by the terminal device, the method further includes: The first base station sends second indication information to the anchor base station, where the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device; The first base station sends an RRC release message to the terminal device.

19. The method according to claim 18, wherein: The method further comprises: The anchor base station sends a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

20. The method according to claim 19, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

21. The method according to any one of claims 12 to 14, wherein: The RRC recovery request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

22. The method according to any one of claims 12 to 14, wherein: The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

23. The method according to claim 22, wherein: The packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

24. The method according to any one of claims 12 to 14, wherein: The context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

25. A communication method, the method comprising: The terminal device sends an RRC recovery request message to a first base station, where the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The terminal device receives an RRC release message sent by the first base station; The RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; the second indication information is carried in a context request message, and the context request message is sent by the first base station to the anchor base station.

26. The method according to claim 25, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

27. The method according to claim 25 or 26, wherein: The method further comprises: After the terminal device performs integrity protection verification on the RRC release message, it confirms that the first base station has received a non-response paging indication or a busy indication from the terminal device.

28. The method according to claim 25 or 26, wherein: The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

29. The method according to claim 28, wherein: The packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

30. The method according to claim 25 or 26, wherein: Before the terminal device sends the RRC recovery request message to the first base station, the method further includes: The terminal device receives a paging message sent by the first base station, where the paging message carries a paging reason; the paging reason is used by the NAS layer or AS layer of the terminal device to determine whether to respond to the paging message.

31. The method according to claim 30, wherein: The paging message is triggered by the anchor base station, and the paging reason in the paging message is notified to the anchor base station by the core network control plane network element.

32. A communication method, the method comprising: The terminal device sends an RRC recovery completion message to the first base station, where the first base station is a base station corresponding to the first communication card in the terminal device, and the RRC recovery completion message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; Before the terminal device sends the RRC recovery completion message to the first base station, the method further includes: The terminal device sends an RRC recovery request message to the first base station; The second indication information is carried in a context request message, and the context request message is sent by the first base station to the anchor base station; the anchor base station is used to send a context request failure message to the first base station, and the context request failure message carries an RRC recovery message and / or an RRC release message; The terminal device receives an RRC recovery message sent by the first base station, where the RRC recovery message is used to trigger the terminal device to enter a connected state.

33. The method of claim 32, wherein: After the terminal device sends the RRC recovery completion message to the first base station, the method further includes: The terminal device receives the RRC release message sent by the first base station.

34. The method of claim 33, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

35. The method of claim 32, wherein: The RRC recovery completion message also carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device.

36. The method according to any one of claims 32 to 35, wherein: The RRC recovery request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

37. The method according to any one of claims 32 to 35, wherein: The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

38. The method of claim 37, wherein: The packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

39. A communication device, applied to a first base station, the device comprising: A receiving unit, configured to receive an RRC recovery request message sent by a terminal device, wherein the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; A sending unit, configured to send an RRC release message to the terminal device; The sending unit is further used to send a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The receiving unit is further used to receive a context request failure message sent by the anchor base station, the context request failure message carries an RRC release message, the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or confirm receipt of a busy indication from the terminal device.

40. The device according to claim 39, wherein The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

41. The device according to claim 39 or 40, wherein: The RRC recovery request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

42. The device according to claim 39 or 40, wherein: The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

43. The device according to claim 42, wherein: The packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

44. The device according to claim 39 or 40, wherein: The sending unit is further used to send a paging message to the terminal device, where the paging message carries a paging reason; the paging reason is used by the NAS layer or AS layer of the terminal device to determine whether to respond to the paging message.

45. The device according to claim 44, wherein The paging message is triggered by the anchor base station, and the paging reason in the paging message is notified to the anchor base station by the core network control plane network element.

46. ​​The apparatus of claim 39, wherein: The third indication information is sent by the anchor base station to the core network control plane network element. The third indication information is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication information is the same as or different from the second indication information.

47. The apparatus of claim 39 or 40, wherein: The sending unit is further used to send a context request message to the anchor base station, where the context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The receiving unit is further configured to receive a context request response message sent by the anchor base station, where the context request response message carries context information.

48. The apparatus of claim 47, wherein: The sending unit is also used to send a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

49. A communication device, applied to a first base station, the device comprising: A receiving unit, configured to receive an RRC recovery completion message sent by a terminal device, wherein the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery completion message carries second indication information, wherein the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The receiving unit is further configured to receive an RRC recovery request message sent by the terminal device; A sending unit, configured to send a context request message to an anchor base station; The receiving unit is further configured to receive a context request failure message sent by the anchor base station, wherein the context request failure message carries an RRC recovery message and / or an RRC release message; The sending unit is also used to send an RRC recovery message to the terminal device, and the RRC recovery message is used to trigger the terminal device to enter a connected state.

50. The apparatus of claim 49, wherein: The device further comprises: a sending unit; The receiving unit is further configured to receive an RRC recovery request message sent by the terminal device; The sending unit is used to send a context request message to the anchor base station; The receiving unit is further configured to receive a context request response message sent by the anchor base station, wherein the context request response message carries context information; The sending unit is also used to send an RRC recovery message to the terminal device, and the RRC recovery message is used to trigger the terminal device to enter a connected state.

51. The apparatus of claim 50, wherein: The sending unit is also used to send an RRC release message to the terminal device.

52. The apparatus of claim 51, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

53. The device according to any one of claims 50 to 52, wherein: The sending unit is also used to send a third indication message to the core network control plane network element, and the third indication message is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication message is the same as or different from the second indication message.

54. The apparatus of claim 49, wherein: The RRC recovery message and / or the RRC release message carries first indication information, and the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication of the terminal device.

55. The apparatus of claim 49 or 54, wherein: The RRC recovery completion message also carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device.

56. The apparatus of claim 49 or 54, wherein: The sending unit is further used to send second indication information to the anchor base station, where the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device; and send an RRC release message to the terminal device.

57. The apparatus of claim 56, wherein: The third indication information is sent by the anchor base station to the core network control plane network element. The third indication information is used by the core network control plane network element to notify the core network user plane network element to stop sending the downlink data of the terminal device to the anchor base station and cache the downlink data. The third indication information is the same or different from the second indication information.

58. The apparatus of claim 57, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

59. The device according to any one of claims 50 to 52, wherein: The RRC recovery request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

60. The device according to any one of claims 50 to 52, wherein: The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

61. The apparatus of claim 60, wherein: The packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

62. The device according to any one of claims 50 to 52, wherein: The context request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device.

63. A communication device, applied to a terminal device, comprising: A sending unit, configured to send an RRC recovery request message to a first base station, where the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery request message is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; A receiving unit, configured to receive an RRC release message sent by the first base station; The RRC recovery request message carries second indication information, and the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; the second indication information is carried in a context request message, and the context request message is sent by the first base station to the anchor base station.

64. The apparatus of claim 63, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

65. The device according to claim 63 or 64, wherein The device also includes: The processing unit is used to confirm that the first base station has received a non-response paging indication or a busy indication of the terminal device after performing integrity protection verification on the RRC release message.

66. The device according to claim 63 or 64, wherein The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

67. The apparatus of claim 66, wherein: The packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

68. The apparatus of claim 63 or 64, wherein: The receiving unit is further used to receive a paging message sent by the first base station, where the paging message carries a paging reason; the paging reason is used by the NAS layer or AS layer of the terminal device to determine whether to respond to the paging message.

69. The apparatus of claim 68, wherein: The paging message is triggered by the anchor base station, and the paging reason in the paging message is notified to the anchor base station by the core network control plane network element.

70. A communication device, applied to a terminal device, comprising: A sending unit, configured to send an RRC recovery completion message to a first base station, where the first base station is a base station corresponding to a first communication card in the terminal device, and the RRC recovery completion message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or indicates a busy indication of the terminal device; The sending unit is further configured to send an RRC recovery request message to the first base station; The second indication information is carried in a context request message, and the context request message is sent by the first base station to the anchor base station; the anchor base station is used to send a context request failure message to the first base station, and the context request failure message carries an RRC recovery message and / or an RRC release message; A receiving unit is used to receive an RRC recovery message sent by the first base station, and the RRC recovery message is used to trigger the terminal device to enter a connected state.

71. The apparatus of claim 70, wherein: The receiving unit is further used to receive an RRC release message sent by the first base station.

72. The apparatus of claim 71, wherein: The RRC release message carries first indication information, where the first indication information is used to indicate confirmation that the terminal device does not respond to paging or to confirm receipt of a busy indication from the terminal device.

73. The apparatus of claim 70, wherein: The RRC recovery completion message also carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or a busy indication of the terminal device.

74. The device according to any one of claims 70 to 73, wherein: The RRC recovery request message carries second indication information, where the second indication information is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

75. The device according to any one of claims 70 to 73, wherein The first LCID of the CCCH corresponding to the RRC recovery request message is used to indicate that the terminal device does not respond to paging or to indicate a busy indication of the terminal device.

76. The apparatus of claim 75, wherein: The packet header corresponding to the RRC recovery request message in the MAC TB is the first packet header, and the LCID in the first packet header is the first LCID.

77. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 1 to 24.

78. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 25 to 38.

79. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 24.

80. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 25 to 38.

81. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 24.

82. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 25 to 38.

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