Busy Indication Transmission Method and Apparatus

Abstract

This application discloses a method and apparatus for transmitting a busy indication, which belongs to the technical field of wireless communication, and includes the steps of: after a terminal intercepts a paging message, determining whether to transmit a busy indication to a network side; and, if it is determined to transmit a busy indication to the network side, transmitting the busy indication to the network side.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from Chinese Patent Application No. 202011493562.6, filed in China on December 16, 2020, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of wireless communication, and in particular to a method and apparatus for transmitting a busy indication. [Background technology]

[0003] Currently, not only single-card terminals but also dual-card or multi-card terminals are available, and dual-card or multi-card terminals are collectively referred to as multi-card terminals. Multi-cards may be provided by the same or different operators and may be entity cards or virtual cards such as embedded SIMs (eSIMs). The capabilities of multi-card terminals may include single-transmission and single-reception, single-transmission and dual-reception, and dual-transmission and dual-reception. One feature of multi-card terminals is their ability to reside on multiple networks. However, the implementation methods for multi-card terminals vary, and some multi-card terminals can simultaneously transmit and receive data on multiple networks without affecting each other. In addition, there are also multi-card terminals that can reside on multiple networks, but reside on multiple networks in a time-sharing manner. For example, they may reside on network A for a certain period of time and intercept paging on network A, and switch to reside on network B for another period of time and intercept paging on network B, or they may be connected to network A for a certain period of time and send and receive data, and switch to network B for another period of time and receive paging, or they may be connected to network A for a certain period of time and send and receive data, and establish a connection on network B for another period of time and send and receive data.

[0004] In protocol versions after Rel-17, radio paging messages sent from the network may carry a paging cause value for the network to indicate the reason for paging the UE. For example, the network pages the UE because a Voice over New Radio (VoNR) (i.e., a voice call) has arrived. The UE can determine its subsequent behavior based on the paging cause value carried in the paging message received from the radio. For example, if the terminal is a dual-card terminal and Card 1 is in a game, and Card 2 receives a paging message with the corresponding paging cause value being VoNR, the terminal may choose to start a Radio Resource Control (RRC) connection establishment on Card 2 or resume the RRC connection to enter the RRC connected state in order to perform the transmission and reception of corresponding data. Further, for example, when Card 1 is in a call and Card 2 receives a paging message with the corresponding paging cause value being the short message service, the multi-card terminal may choose not to process the service of Card 2. At this time, since the network of Card 2 is unaware that the UE has chosen not to process the service of Card 2, it may continue to page the UE, resulting in a waste of network resources. Summary of the Invention Problems to be Solved by the Invention

[0005] An embodiment of the present application aims to provide a method and apparatus for transmitting a busy indication that can solve the problem that when the terminal chooses not to process the service that triggers the current paging, the network side still continues to page the terminal, causing a waste of network resources. Means for Solving the Problems

[0006] To solve the above technical problems, the present application is implemented as follows.

[0007] On the first aspect, there is provided a method for transmitting a busy indication executed by a terminal, comprising: after intercepting a paging message, determining whether to send a busy indication to the network side; if it is determined to send a busy indication to the network side, sending the busy indication to the network side.

[0008] On the second aspect, there is provided a method for transmitting a busy indication executed by a network-side device, comprising: receiving a busy indication sent from a terminal; performing a corresponding operation according to the busy indication.

[0009] On the third aspect, a determination module for determining whether to send a busy indication to the network side after intercepting a paging message; a first transmission module for sending a busy indication to the network side if it is determined to send a busy indication to the network side.

[0010] On the fourth aspect, a first reception module for receiving a busy indication sent from a terminal; a processing module for performing a corresponding operation according to the busy indication.

[0011] On the fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, wherein when the program or command is executed by the processor, the steps of the method according to the first aspect are realized.

[0012] On the sixth side, a network-side device is provided, which includes a processor, a memory, and a program or command stored in the memory and executable on the processor. When the program or command is executed by the processor, the steps of the method described on the second side are realized.

[0013] On the seventh side, a readable storage medium is provided, in which a program or command is stored. When executed by a processor, the steps of the method described on the first side or the steps of the method described on the second side are realized.

[0014] On the eighth side, a chip is provided, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor executes a program or command to realize the method described on the first side or the method described on the second side.

[0015] On the ninth side, a computer program product is provided, which is stored in a non-volatile storage medium and is executed by at least one processor to realize the method described on the first side or the method described on the second side.

[0016] In the embodiments of the present application, after the terminal intercepts a paging message, if the transmission condition of the busy indication is satisfied, the terminal can send a busy indication to the network side. Thereby, the network side can execute corresponding processing, and the occurrence of waste of network resources caused by continuously paging the terminal can be avoided. If the condition is not satisfied, the terminal can choose not to send a busy indication, thereby avoiding affecting the service currently executed by the terminal as much as possible.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0018] Hereinafter, with reference to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Naturally, the described embodiments are only a 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 those skilled in the art without creative efforts shall fall within the protection scope of the present application. The terms "first", "second", etc. in the specification and claims of the present application are not for explaining a specific order or sequence, but for distinguishing similar objects. It should be understood that such terms may be replaced with each other in appropriate cases so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein. Also, the objects distinguished by "first" and "second" generally belong to one category, and the number of objects is not limited. For example, the first object may be one or more. Also, in the specification and claims, "and / or" indicates at least one of the connected objects, and the symbol " / " generally represents that the related objects before and after are in an "or" relationship.

[0019] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used in other systems and wireless technologies in addition to those mentioned above. However, these technologies may be used in other systems and wireless technologies, such as 6th generation (6G) systems. th The following description will discuss New Radio (NR) systems for illustrative purposes, and NR terminology will be used in much of the following description, although the description may also be applicable to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0020] FIG. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Here, the terminal 11 may also be referred to as a terminal device or a user equipment (UE). The terminal 11 may be a mobile phone, a tablet personal computer, a laptop computer (also called a notebook computer), a personal digital assistant (PDA), a personal digital assistant, a mobile information terminal, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device, or an in-vehicle device (VUE), a pedestrian terminal (PUE), etc. The wearable device includes a wristband, earphones, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 may be a base station or a core network. Here, the base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (TRP), or any other suitable term in the field. As long as the same technical effect can be achieved, the base station is not limited to a specific technical term. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0021] In the following, with reference to the drawings, the method and apparatus for transmitting a busy indication provided by the embodiments of the present application will be described in more detail by specific embodiments and their application scenarios.

[0022] In the present application, in order to avoid redundancy, unless otherwise specified, the specific method described in the embodiment of FIG. 2 can be extended to other embodiments of the present application.

[0023] Referring to FIG. 2, which is a flowchart of the method for transmitting a busy indication according to an embodiment of the present application, the method is executed by a terminal and includes the following steps 21 and 22.

[0024] In step 21, after receiving a paging message, it is determined whether to send a busy indication to the network side.

[0025] In step 22, if it is determined to send a busy indication to the network side, the busy indication is sent to the network side.

[0026] The terminal in the embodiment of the present application may be a single-card terminal or a multi-card terminal.

[0027] When the terminal in the embodiment of the present application is a multi-card terminal, the terminal can be regarded as a terminal corresponding to any one of the multiple cards of the multi-card terminal.

[0028] In the embodiment of the present application, after the terminal receives a paging message, if the transmission condition of the busy indication is satisfied, the busy indication can be sent to the network side, so that the network side can execute corresponding processing and avoid the occurrence of waste of network resources caused by continuously paging the terminal. If the condition is not satisfied, the terminal can choose not to send the busy indication, thereby avoiding affecting the service currently being executed by the terminal as much as possible.

[0029] In some embodiments of the present application, the terminal may be a single-card terminal. For example, when the terminal does not want to process the service that triggers the current paging, the terminal can send a busy indication to the network side, so that the network side can execute the corresponding process, and avoid the occurrence of waste of network resources caused by continuously paging the terminal. If the conditions are not met, the terminal can choose not to send a busy indication, thereby avoiding affecting the service currently being executed by the terminal as much as possible.

[0030] In an embodiment of the present application, optionally, the busy indication includes at least one of an RRC layer busy indication and a non-access stratum (NAS) busy indication. It can also be represented as an AS layer busy indication and a NAS busy indication.

[0031] In an embodiment of the present application, optionally, after intercepting a paging message, the step of determining whether to send a busy indication to the network side includes If at least one of the first condition, the second condition, and the third condition is satisfied, it includes the step of determining to send the busy indication to the network side.

[0032] The first condition includes at least one of the following A1), A2), A3), and A4).

[0033] A1) The paging message is sent from the network side of one card of the terminal, and the priority of the service corresponding to the paging message is lower than or equal to the priority of the service that the terminal is executing or intends to execute on other cards.

[0034] In an embodiment of the present application, the terminal may be a multi-card terminal. The above condition A1) may be interpreted as follows. The priority of the service corresponding to the paging message received by the terminal is less than or equal to the priority of the service that another terminal is executing or attempting to execute, where the other terminal and the terminal are multiple terminals corresponding to multiple cards of one multi-card terminal. Alternatively, the priority of the service corresponding to the paging message is less than or equal to the priority of the service that another terminal is executing or attempting to execute, where the other terminal is related to the terminal or shares the same user equipment.

[0035] In an embodiment of the present application, the priority of the service corresponding to the paging message and the priority of the service that the terminal is executing or attempting to execute on other cards may be realized by the terminal, or may be agreed upon by a protocol, or may be set by the network side. The priority of the service corresponding to the paging message may be the service type indicated by the paging reason value carried in the paging message.

[0036] A2) The paging message is sent from the network side of one card of the terminal, and the other cards of the terminal are executing or attempting to execute a predetermined service.

[0037] The predetermined service is, for example, a voice service or a game, etc.

[0038] In an embodiment of the present application, the terminal may be a multi-card terminal. The above condition A2) may be interpreted as follows. When the terminal receives a paging message, another terminal is executing or attempting to execute a predetermined service, where the other terminal and the terminal are multiple terminals corresponding to multiple cards of one multi-card terminal, or the other terminal is related to the terminal or shares the same user equipment.

[0039] In an embodiment of the present application, the predetermined service may be implemented by a terminal, or may be agreed upon by a protocol, or may be set by the network side.

[0040] A3) Before the terminal intercepts the paging message, the terminal has not sent to the network side the departure instruction information for instructing that the terminal cannot send and receive data on the network side.

[0041] The departure instruction information includes a departure message, a departure request, a departure notice, a negotiation departure, a switching notice, a switching request, etc. All of them instruct that the terminal cannot send and receive data on the network side, or request the network side to release the terminal, or instruct that the terminal cannot intercept and / or respond to paging, or instruct that the terminal is busy with another card, or instruct that the terminal departs from the network side, or instruct that the terminal is switched to the network side corresponding to another card.

[0042] In one embodiment, the terminal has not sent the departure instruction information to the network side within a predetermined time until the terminal intercepts the paging message. The predetermined time may be implemented by the terminal, or may be set by the network, or may be agreed upon by a protocol.

[0043] A4) Before the terminal intercepts the paging message, the terminal has not sent the busy instruction to the network side.

[0044] In one embodiment, the terminal has not sent the busy instruction to the network side within a predetermined time until the terminal intercepts the paging message. The predetermined time may be implemented by the terminal, or may be set by the network, or may be agreed upon by a protocol.

[0045] The second condition includes at least one of the following B1), B2), and B3).

[0046] B1) The Anchor base station or the last serving base station has received or can process an RRC layer busy indication, or has requested the terminal to transmit an RRC layer busy indication.

[0047] In an embodiment of the present application, when the terminal is a multi-card terminal, the Anchor base station or the last serving base station is the Anchor base station or the last serving base station of the card that has received the paging message.

[0048] In an embodiment of the present application, if the Anchor base station or the last serving base station cannot process a service that triggers being busy or the current paging after receiving a paging message transmitted from the network, it is required to notify the terminal by dedicated signaling or a broadcast message that the RRC layer busy indication information needs to be transmitted to the network. Alternatively, the Anchor base station or the last serving base station can notify the terminal by dedicated signaling or a broadcast message that the network side can receive and / or process the RRC layer busy indication information.

[0049] B2) The Anchor base station or the last serving base station supports the transmission of a paging reason value.

[0050] In an embodiment of the present application, when the anchor base station or the last serving base station supports the transmission of a paging reason value, when the terminal receives a paging message transmitted from the anchor base station or the last serving base station, it may determine to transmit the busy indication based on the paging reason value therein, and the anchor base station or the last serving base station may also support the reception of the busy indication at the same time. The terminal can also know whether the anchor base station or the last serving base station supports the transmission of a paging reason value based on protocol agreements or other information. For example, if a Public Land Mobile Network (PLMN) supports the transmission of a paging reason value, the terminal can know whether the anchor base station or the last serving base station supports the transmission of a paging reason value by obtaining PLMN information.

[0051] B3) The anchor base station or the last serving base station supports functions or features related to the multi-card terminal.

[0052] The third condition includes at least one of the following C1), C2), and C3).

[0053] C1) The core network can receive or process the NAS busy indication, or requests the terminal to transmit the NAS busy indication.

[0054] In an embodiment of the present application, when the terminal is a multi-card terminal, the core network is the core network of the card that receives the paging message.

[0055] Optionally, the core network may include, but is not limited to, at least one of a core network device, a core network node, a core network function, a network element of the core network, a Mobility Management Entity (MME), an Access Management Function (AMF), a Session Management Function (SMF), a User Plane Function (UPF), a serving gateway (SGW), a PDN Gateway (PDN Gateway), a Policy Control Function (PCF), a Policy and Charging Rules Function unit (PCRF), a Serving GPRS Support Node (SGSN), a Gateway GPRS Support Node (GGSN), and an Application Function.

[0056] C2) The core network supports the transmission of paging reason values.

[0057] C3) The core network supports functions or features related to multi - SIM terminals.

[0058] To avoid redundancy, unless otherwise specified, the specific descriptions of the first condition and the second condition may also be applied to the third condition.

[0059] In the embodiments of the present application, optionally, after intercepting a paging message, the step of determining whether to send a busy indication to the network side includes the step of determining not to send the busy indication to the network side when at least one of the fourth condition, the fifth condition, and the sixth condition is satisfied.

[0060] The fourth condition includes at least one of the following D1), D2), and D3).

[0061] D1) The paging message is sent from the network side of one card of the terminal, and the priority of the service corresponding to the paging message is higher than the priority of the service that the terminal is executing or attempting to execute on other cards.

[0062] In the embodiments of the present application, the terminal may be a multi-card terminal. In this case, condition D1) may be interpreted as follows. The priority of the service corresponding to the paging message received by the terminal is higher than the priority of the service that other terminals are executing or attempting to execute, where the other terminals and the terminal are a plurality of terminals corresponding to a plurality of cards of one multi-card terminal. Or, the priority of the service corresponding to the paging message is higher than the priority of the service that other terminals are executing or attempting to execute, where the other terminals are related to the terminal or share the same user equipment.

[0063] In the embodiments of the present application, the high or low priority of the service corresponding to the paging message and the priority of the service that the terminal is executing or attempting to execute on other cards may be realized by the terminal, or may be agreed upon by a protocol, or may be set by the network side. The priority of the service corresponding to the paging message may be the service type indicated by the paging reason value carried in the paging message.

[0064] D2) Before intercepting the paging message, the terminal has sent the network side with departure instruction information for instructing that the terminal cannot send and receive data on the network side.

[0065] The evacuation instruction information includes an evacuation message, an evacuation request, an evacuation notice, a negotiation evacuation, a switching notice, a switching request, etc. All of them instruct that the terminal cannot transmit and receive data on the network side, or request the network side to release the terminal, or instruct that the terminal cannot intercept and / or respond to paging, or instruct that the terminal is busy with another card, or instruct that the terminal evacuates from the network side, or instruct that the terminal is switched to the network side corresponding to another card.

[0066] In one embodiment, the terminal transmits the evacuation instruction information to the network side within a predetermined time until the terminal intercepts the paging message. The predetermined time may be realized by the terminal, or set by the network, or agreed upon by the protocol.

[0067] D3) Before the terminal intercepts the paging message, the terminal transmits the busy instruction to the network side.

[0068] In one embodiment, the terminal transmits the busy instruction to the network side within a predetermined time until the terminal intercepts the paging message. The predetermined time may be realized by the terminal, or set by the network, or agreed upon by the protocol.

[0069] The fifth condition includes at least one of the following E1), E2), and E3).

[0070] E1) The anchor base station or the last serving base station cannot receive or process the RRC layer busy instruction, or does not request the terminal to transmit the RRC layer busy instruction.

[0071] In an embodiment of the present application, when the terminal is a multi - card terminal, the anchor base station or the last serving base station is the anchor base station or the last serving base station of the card that received the paging message.

[0072] In an embodiment of the present application, after the anchor base station or the last serving base station receives a paging message sent from the network, if it is busy or cannot process the service that triggers the current paging, it is not required to send the RRC layer busy indication information to the network. This can be notified to the terminal by dedicated signaling or a broadcast message. Alternatively, the anchor base station or the last serving base station can notify the terminal by dedicated signaling or a broadcast message that the network side cannot receive and / or process the RRC layer busy indication information.

[0073] E2) The anchor base station or the last serving base station does not support the transmission of paging reason values.

[0074] In an embodiment of the present application, if the anchor base station or the last serving base station does not support the transmission of paging reason values, when the terminal receives a paging message sent from the anchor base station or the last serving base station, it cannot determine to send the busy indication based on the paging reason value therein, and there is a possibility that the anchor base station or the last serving base station does not support the reception of the busy indication. The terminal can also know whether the anchor base station or the last serving base station supports the transmission of paging reason values based on protocol agreements or other information.

[0075] E3) The anchor base station or the last serving base station does not support functions or features related to multi - card terminals.

[0076] The sixth condition includes at least one of the following F1), F2), and F3).

[0077] F1) The core network cannot receive or process the NAS busy indication, or does not request the terminal to send the NAS busy indication.

[0078] In an embodiment of the present application, when the terminal is a multi-card terminal, the core network is the core network of the card that receives the paging message.

[0079] Optionally, the core network may include, but is not limited to, at least one of a core network device, a core network node, a core network function, a network element of the core network, a Mobility Management Entity (MME), an Access Management Function (AMF), a Session Management Function (SMF), a User Plane Function (UPF), a serving Gateway (SGW), a PDN Gateway (PDN Gateway), a Policy Control Function (PCF), a Policy and Charging Rules Function unit (PCRF), a Serving GPRS Support Node (SGSN), a Gateway GPRS Support Node (GGSN), and an Application Function.

[0080] F2) The core network does not support sending the paging reason value.

[0081] F3) The core network does not support functions or features related to the multi-card terminal.

[0082] In an embodiment of the present application, optionally, before determining whether to selectively send a busy indication to the network side, at least one of the following 1), 2), 3), 4), 5), 6), and 7) is further included.

[0083] 1) Receive, by broadcast message or dedicated signaling, first indication information for indicating whether the anchor base station or the last serving base station can receive or process an RRC layer busy indication, or whether it has requested the terminal to send an RRC layer busy indication.

[0084] Optionally, the dedicated signaling is an RRC release message, an RRC connection release message, or an RRC connection reconfiguration message.

[0085] In some other embodiments of the present application, optionally, whether the anchor base station or the last serving base station can receive or process an RRC layer busy indication can also be implicitly indicated in other ways.

[0086] 2) Receive, by broadcast message or dedicated signaling, second indication information for indicating whether the core network can receive or process a NAS busy indication, or whether it has requested the terminal to send a NAS busy indication.

[0087] Optionally, the dedicated signaling is an RRC release message, an RRC connection release message, an RRC connection reconfiguration message, or a NAS message.

[0088] In some other embodiments of the present application, optionally, whether the core network can receive or process a NAS busy indication can also be implicitly indicated in other ways.

[0089] 3) Receive, by broadcast message or dedicated signaling, third indication information for indicating whether the anchor base station or the last serving base station supports sending a paging reason value.

[0090] 4) Receive fourth indication information for indicating whether the core network supports the transmission of paging reason values by broadcast message or dedicated signaling.

[0091] 5) Receive fifth indication information for indicating whether the anchor base station or the last serving base station supports functions or features related to the multi - card terminal by broadcast message or dedicated signaling.

[0092] 6) Receive sixth indication information for indicating whether the core network supports functions or features related to the multi - card terminal by broadcast message or dedicated signaling.

[0093] 7) Transmit seventh indication information for indicating whether the terminal supports the transmission of the busy indication to the network side.

[0094] Optionally, the dedicated signaling for transmitting the third indication information may be an RRC release message, an RRC connection release message, an RRC connection re - configuration message, or an NAS message.

[0095] In some embodiments of the present application, the terminal transmits seventh indication information to the network side for indicating whether the terminal supports the transmission of the RRC layer busy indication. After the network side receives the seventh indication information, when releasing the terminal again, if the terminal supports the transmission of the RRC layer busy indication, the network side can release the terminal to the RRC inactive state; if the terminal does not support the transmission of the RRC layer busy indication, the network side can release the terminal to the RRC idle state.

[0096] In some embodiments, optionally, when at least one of the first condition, the second condition, and the third condition is satisfied, the step of determining to transmit the busy indication to the network side includes at least one of the following 1), 2), and 3).

[0097] 1) When the second condition and the third condition are satisfied, or when the first condition, the second condition, and the third condition are satisfied, it is determined to transmit the RRC layer busy indication, or to transmit the busy indication according to the RRC state when the terminal receives the paging message.

[0098] Optionally, further, the step of transmitting the busy indication according to the RRC state when the terminal receives the paging message includes when the terminal is in the RRC inactive state (INACTIVE), the step of transmitting the RRC layer busy indication, or when the terminal is in the RRC idle state, the step of transmitting the NAS busy indication.

[0099] 2) When the third condition is not satisfied and the second condition is satisfied, or when the third condition is not satisfied and the first condition and the second condition are satisfied, it is determined to transmit the RRC layer busy indication.

[0100] Optionally, further, when the third condition is not satisfied and the second condition is satisfied, or when the third condition is not satisfied and the first condition and the second condition are satisfied, when the terminal is in the RRC inactive state, the RRC layer busy indication is transmitted, or when the terminal is in the RRC idle state, the RRC layer busy indication is not transmitted.

[0101] 3) When the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, it is determined to transmit the NAS busy indication.

[0102] In an embodiment of the present application, optionally, the step of determining whether to selectively send a busy indication to the network side includes at least one of the following 1) and 2).

[0103] 1) When the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, it is determined not to send the busy indication.

[0104] Not sending the busy indication includes not sending an RRC layer busy indication and an NAS busy indication.

[0105] 2) When the second condition is not satisfied and the third condition is also not satisfied, it is determined not to send the busy indication.

[0106] Not sending the busy indication includes not sending an RRC layer busy indication and an NAS busy indication.

[0107] In an embodiment of the present application, optionally, when the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, the step of sending the NAS busy indication further includes a step in which the RRC layer reports the paging reason value in the busy indication or the paging message to the upper layer.

[0108] In an embodiment of the present application, optionally, after the RRC layer reports the paging reason value in the busy indication or the paging message to the upper layer, the step further includes a step in which the terminal enters the RRC idle state.

[0109] In an embodiment of the present application, optionally, after the terminal enters the RRC idle state the step further includes setting a release reason value.

[0110] Optionally, the release reason value includes at least one of RRC connection failure, RRC connection resume failure, busy indication failure, and a first reason value. The first reason value is a reason value other than RRC connection failure, RRC connection resume failure, and busy indication failure.

[0111] In an embodiment of the present application, optionally, the busy indication is carried in one of an RRC connection resume request message, an RRC connection resume completion message, an RRC connection establishment request message, an RRC connection establishment completion message, a Security Mode Command (SMC) completion message, and an NAS message.

[0112] Further optionally, when the terminal is in the RRC idle state when receiving a paging message, the busy indication is carried in one of an RRC connection establishment request message, an RRC connection establishment completion message, a Security Mode Command (SMC) completion message, and an NAS message.

[0113] When the terminal is in the RRC inactive state when receiving a paging message, the busy indication is carried in one of an RRC connection resume request message, an RRC connection resume completion message, a Security Mode Command (SMC) completion message, and an NAS message.

[0114] In an embodiment of the present application, optionally, the transmission method of the busy indication may further include the step of sending release indication information for instructing the network side to release the terminal to the network side.

[0115] Further optionally, the busy indication information is used to instruct the network side to release the terminal to a first RRC state that is the RRC idle state or the RRC inactive state.

[0116] Optionally, the release indication information is carried in one of a Radio Resource Control (RRC) connection resume request message, an RRC connection resume completion message, an RRC connection establishment request message, an RRC connection establishment completion message, a Security Mode Command (SMC) completion message, and a NAS message.

[0117] In an embodiment of the present application, the release indication information may be transmitted simultaneously with the busy indication. For example, when the terminal is in the RRC inactive state when receiving a paging message, the terminal transmits a NAS busy indication by an RRC connection resume completion message, and carries the release indication information in the RRC connection resume completion message.

[0118] In an embodiment of the present application, optionally, the transmission method of the busy indication may further include the step of indicating to the network side the time of a second timer for indicating the busy time of the terminal or the time when a paging message cannot be received.

[0119] Optionally, the time of the second timer is carried in one of an RRC connection resume request message, an RRC connection resume completion message, an RRC connection establishment request message, an RRC connection establishment completion message, a Security Mode Command SMC completion message, and a NAS message.

[0120] In an embodiment of the present application, the time of the second timer may be transmitted simultaneously with the busy indication. Or, the second timer is transmitted simultaneously with the busy indication and the release indication information.

[0121] The time of the second timer may be a value agreed upon by the protocol.

[0122] In an embodiment of the present application, optionally, after transmitting a busy indication to the network side, when an RRC release message is not received, the step of the terminal entering the RRC idle state, and When the T319 timer times out, the step that the terminal enters the RRC idle state, and further includes at least one of the steps of starting a first timer for instructing a waiting time until the terminal receives an RRC release message.

[0123] Optionally, the first timer is a newly defined timer, and its time may be different from the T319 timer. The value of the first timer may be agreed upon by the protocol.

[0124] In an embodiment of the present application, optionally, after starting the first timer, when an RRC release message is received, the step of stopping the first timer, or when the first timer times out, the step that the terminal is released to a first RRC state where the terminal is in the RRC idle state or the RRC inactive state.

[0125] Optionally, when the terminal sends release indication information to the network side, the first RRC state may be the first RRC state indicated by the release indication information or the first RRC state agreed upon by the protocol.

[0126] In an embodiment of the present application, optionally, the method for transmitting the busy indication further includes the step of transmitting the time of the first timer and / or the first RRC state to the network side when transmitting the busy indication or before transmitting the busy indication.

[0127] Optionally, the step of transmitting the busy indication to the network side includes the step of stopping transmitting the busy indication when a random access channel failure occurs when transmitting the busy indication to the network side.

[0128] Referring to FIG. 3, an embodiment of the present application further provides a method for transmitting a busy indication executed by a network side device, and the method includes the following steps 31 and 32.

[0129] In step 31, receive the busy indication transmitted from the terminal.

[0130] In step 32, execute a corresponding operation according to the busy indication.

[0131] In the embodiment of the present application, the network side receives the busy indication transmitted from the terminal and executes corresponding processing, thereby avoiding the occurrence of waste of network resources due to continuous paging.

[0132] In the embodiment of the present application, optionally, the busy indication includes at least one of an RRC layer busy indication and an NAS busy indication.

[0133] In the embodiment of the present application, optionally, the busy indication includes an RRC layer busy indication, and the step of executing a corresponding operation according to the busy indication includes: including the step of executing a first operation according to the busy indication, where the first operation includes: not stopping or restarting paging related to the terminal, and discarding or blocking or caching the received downlink data or signaling, including at least one of them.

[0134] In the embodiment of the present application, optionally, the step of executing a first operation according to the busy indication includes: starting a second timer after receiving the RRC layer busy indication; executing the first operation during the operation of the second timer; stopping the second timer when receiving an uplink message transmitted from the terminal; and stopping the first operation when the second timer times out.

[0135] Optionally, the uplink message includes an RRC connection establishment request or an RRC connection resume request message or a Tracking Area Update Request (TAU), or a Radio Access Network (RAN)-based Notification Area Update (RNAU).

[0136] In an embodiment of the present application, optionally, the busy indication includes a NAS busy indication, and the step of performing a corresponding operation according to the busy indication is including the step of performing a second operation according to the busy indication, and the second operation is transmitting the busy indication to the anchor base station or the last serving base station of the terminal; stopping transmitting downlink data or signaling to the anchor base station or the last serving base station of the terminal; not stopping or resuming paging related to the terminal; and including at least one of discarding or blocking or caching the received downlink data or signaling.

[0137] Optionally, the step of performing a second operation according to the busy indication is starting a second timer after receiving the NAS busy indication; performing the second operation during the operation of the second timer; stopping the second timer when receiving an uplink message transmitted from the terminal; and stopping the second operation when the second timer times out.

[0138] Optionally, the transmission method of the busy indication further includes receiving, from the terminal, release indication information for instructing the network side to release the terminal.

[0139] Optionally, after receiving the release indication information transmitted from the terminal, Based on the release instruction information, transmitting an RRC release message to the terminal, or releasing the terminal to the RRC idle state or RRC inactive state indicated by the release instruction information, further comprising.

[0140] In the following, with reference to specific embodiments, an example will be given to explain the above method for transmitting the busy indication.

[0141] In Embodiment 1 of the present invention, the multi-card terminal transmits an RRC busy indication to a network where Card 2 in the RRC inactive state exists.

[0142] In Step 1, the terminal is in the RRC inactive state on Card 2 and monitors the paging position on Card 2.

[0143] In Step 2, the terminal monitors a paging message (RAN paging) transmitted from the network of Card 2 on Card 2 and determines to transmit an RRC layer busy indication to the network of Card 2.

[0144] Furthermore, when the first condition and / or the second condition is satisfied, it is determined to transmit an RRC layer busy indication to the network of Card 2. Here, the first condition includes at least one of the following.

[0145] The first condition includes at least one of the following A1), A2), A3), and A4).

[0146] A1) The paging message is transmitted from the network side of one card of the terminal, and the priority of the service corresponding to the paging message is less than or equal to the priority of the service that the terminal is executing or attempting to execute on other cards.

[0147] For example, the terminal knows the type of service that Card 2 will execute based on the paging reason value carried in the received paging message of Card 2, and the terminal knows the type of service that Card 1 is currently executing. The terminal compares the priorities of the service types of the two cards and determines whether to send a busy indication. The priority levels of the services of the two cards may be realized by the terminal, or may be agreed upon by a protocol, or may be set by the network.

[0148] As an example, when Card 2 is a data service and Card 1 is a voice service, the priority of the service of Card 2 is lower than the priority of the service of Card 1.

[0149] A2) The paging message is sent from the network side of one card of the terminal, and the other card of the terminal is executing or attempting to execute a predetermined service.

[0150] For example, since the UE is executing a voice service on Card 1, so as not to interrupt the service being executed on Card 1, the terminal sends a busy indication to the network where Card 2 exists.

[0151] A3) Before the terminal intercepts the paging message, the terminal has not sent departure indication information to the network side for instructing that the terminal cannot send and receive data on the network side.

[0152] A4) Before the terminal intercepts the paging message, the terminal has not sent the busy indication to the network side.

[0153] The second condition includes at least one of the following B1), B2), and B3).

[0154] B1) The anchor base station or the last serving base station can receive or process the RRC layer busy indication, or request the terminal to send the RRC layer busy indication.

[0155] In an embodiment of the present application, the anchor base station or the last serving base station is the anchor base station or the last serving base station of card 2.

[0156] Optionally, before determining whether to send a busy indication to the network side, the anchor base station or the last serving base station further includes the step of receiving, by broadcast message or dedicated signaling, first indication information for indicating whether the anchor base station or the last serving base station can receive or process the RRC layer busy indication, or whether it has requested the terminal to send the RRC layer busy indication.

[0157] Optionally, the dedicated signaling is an RRC release message or an RRC reconfiguration message.

[0158] In some other embodiments of the present application, optionally, whether the anchor base station or the last serving base station can receive or process the RRC layer busy indication can also be implicitly indicated in other ways.

[0159] B2) The anchor base station or the last serving base station supports the transmission of a paging reason value.

[0160] B3) The anchor base station or the last serving base station supports functions or features related to a multi-card terminal.

[0161] In step 3, the terminal sends an RRC connection resume request message using card 2, and the RRC connection resume request message carries an RRC layer busy indication.

[0162] In step 4, the terminal receives an RRC connection resume message.

[0163] In step 5, when the terminal receives an RRC Release message, it enters the corresponding RRC state according to the instructions in the RRC Release message (for example, it is maintained in the RRC inactive state or enters the RRC idle state). If the terminal does not receive the RRC Release message, it enters the idle state. Further, if the terminal does not receive the RRC Release message during the operation of a predefined timer (for example, the T319 timer or a newly defined timer with a shorter time), the terminal enters the idle state after the timer times out. Optionally, the terminal sets the release reason value to one of Resume failure, busy indication failure, or other.

[0164] In Embodiment 2 of the present invention, the terminal sends a NAS busy indication to the network where Card 2 exists.

[0165] In step 1, the terminal is in the RRC IDLE state on Card 2 and monitors the paging position on Card 2.

[0166] In step 2, when the terminal monitors a paging message (CN paging) sent from the network of Card 2 on Card 2, it determines to send a NAS busy indication to the network of Card 2.

[0167] Furthermore, when at least one of the first condition and / or the third condition is satisfied, a NAS busy indication is sent to the network of Card 2. If not satisfied, the UE does not send a busy indication.

[0168] Here, the first condition can refer to Embodiment 1.

[0169] The third condition includes at least one of the following C1), C2), and C3).

[0170] C1) The core network can receive or process a NAS busy indication, or requests the terminal to send a NAS busy indication.

[0171] In an embodiment of the present application, the core network is the core network of card 2.

[0172] In some other embodiments of the present application, optionally, whether the core network can receive or process a NAS busy indication can also be implicitly indicated in other ways.

[0173] In an embodiment of the present application, optionally, before determining whether to send a busy indication to the network side, the step of receiving, by broadcast message or dedicated signaling, first indication information for indicating whether the anchor base station or the last serving base station can receive or process an RRC layer busy indication, or whether it has requested the terminal to send an RRC layer busy indication, is further included.

[0174] Optionally, the dedicated signaling is an RRC release message, an RRC reconfiguration message, or a NAS message.

[0175] Optionally, whether the anchor base station or the last serving base station can receive or process an RRC layer busy indication can also be implicitly indicated in other ways.

[0176] C2) The core network supports sending a paging reason value.

[0177] C3) The core network supports functions or features related to a multi-card terminal.

[0178] In step 3, the terminal sends an RRC connection establishment request message.

[0179] In step 4, the terminal receives an RRC connection establishment message.

[0180] In step 5, the terminal transmits an RRC connection establishment completion message (i.e., msg5), which carries a NAS busy indication.

[0181] Optionally, release indication information for instructing the network side to release the terminal is also carried. Further optionally, it instructs the network side to release to an RRC state that is the RRC idle state or the RRC inactive state.

[0182] In step 6, when the terminal receives an RRC release message, it enters the corresponding RRC state according to the instruction content of the RRC release message (for example, is maintained in the RRC inactive state or enters the RRC idle state). If the terminal does not receive an RRC release message, the UE is locally released, and the RRC state to be released can be determined based on the RRC state reported by the terminal in the release indication message in step 5, or is released to the corresponding RRC state based on protocol agreements (for example, it is agreed by the protocol to be released to the RRC idle state). Optionally, if the terminal does not receive an RRC release message during the operation of a pre-defined timer, the UE is locally released.

[0183] Optionally, set the release reason value to one of RRC connection failure, busy indication failure, and others.

[0184] The solution means of this embodiment may be applied when the UE transmits a busy indication in the RRC inactive state. Here, the RRC connection establishment request, RRC connection establishment, and RRC connection establishment completion message in the above solution means may be replaced with an RRC connection resume request, RRC connection resume, and RRC connection resume completion message.

[0185] In Embodiment 3 of the present invention, the behavior of the terminal when the second condition is not satisfied is described.

[0186] In step 1, if the second condition in step 2 in embodiment 1 is not met, the terminal may perform one of the following operations a) and b).

[0187] a) The terminal does not send an RRC layer busy indication, and the flow ends.

[0188] b) The terminal decides to send a NAS busy indication.

[0189] Furthermore, if the second condition is not met because the terminal receives a paging reason value but the anchor base station or the last serving base station cannot receive or process the RRC layer busy indication, the terminal sends a NAS busy indication.

[0190] Further alternatively, it is sent when the core network can receive or process the NAS busy indication, or when the third condition in the second embodiment is met.

[0191] In addition, the RRC layer of the terminal reports a busy indication or a paging cause value to the upper layer.

[0192] In step 2, the upper layer of the terminal generates an NAS message, carries an NAS busy indication, and sends the NAS message to the RRC layer, requesting the RRC layer to initiate an RRC connection resumption request. Optionally, the NAS layer indicates an access category, for example, Access Category=0, to the RRC layer.

[0193] In step 3, after receiving the NAS message sent from the upper layer, the RRC layer of the UE performs unified access control (UAC) (if the upper layer does not provide an access category, the RRC layer can set the access category number for this access attempt, e.g., 0), and sends an RRC connection resumption request to the network side of card 2.

[0194] In step 4, the terminal receives an RRC connection resume message.

[0195] In step 5, the terminal sends an RRC connection resume completion message, which carries the NAS busy indication in step 3. Optionally, release indication information for instructing the network side to release the terminal is also carried. Further optionally, it instructs the network side to release to an RRC state that is the RRC idle state or the RRC inactive state.

[0196] In step 6, the terminal receives an RRC release message and enters the corresponding RRC state (idle state or inactive state) according to the network's instruction. If the terminal does not receive the RRC release message, the terminal is locally released, and the RRC state to be released can be determined based on the RRC state reported by the terminal in step 5, or is released to the corresponding RRC state based on the protocol convention (for example, it is agreed by the protocol to be released to the RRC idle state). Optionally, if the RRC release message is not received during the operation of a pre-defined timer, the terminal is locally released. Optionally, the release reason value is set to one of RRC connection failure, busy indication failure, and others.

[0197] In step 7, the base station sends the NAS busy indication to the core network.

[0198] In step 8, after receiving the NAS busy indication, the core network performs one of the following operations a) and b).

[0199] a) Send the above busy indication to the anchor base station of card 2 or the last serving base station.

[0200] b) Stop sending downlink data / signaling to the anchor base station or the last serving base station, and optionally stop for a certain period of time.

[0201] In Embodiment 4 of the present invention, after the RRC layer sends a busy indication to the upper layer, it may enter the RRC idle state.

[0202] In step 1, in step 1 of Embodiment 3, it is assumed that after the RRC layer of the terminal reports a busy indication or a paging cause value to the upper layer, it enters the RRC idle state. In this case, optionally, the release cause value is set to one of RRC resume failure, busy indication failure, and others.

[0203] In step 2, the upper layer of the terminal generates an NAS message, which carries an NAS busy indication, sends the NAS message to the RRC layer, and at the same time requests the RRC layer to start RRC connection resume. Optionally, the NAS layer indicates one access category, for example, Access category = 0, to the RRC layer.

[0204] In step 3, after the RRC layer of the terminal receives the NAS message sent from the upper layer, it performs UAC and sends an RRC connection establishment request message to the anchor base station of Card 2 or the last serving base station.

[0205] In step 4, the terminal receives an RRC connection establishment message.

[0206] In step 5, the terminal sends an RRC connection establishment completion message, which carries the NAS busy indication in step 3. Optionally, the RRC connection establishment completion message also carries release indication information for instructing the service anchor base station or the last serving base station to release the terminal. Optionally, it instructs the anchor base station or the last serving base station to release to the RRC state that is the RRC idle state or the RRC inactive state.

[0207] In step 6, the terminal receives an RRC release message and enters the corresponding RRC state (RRC idle state or RRC inactive state) according to the network's instructions. If the terminal does not receive the RRC release message, the terminal is locally released, and the RRC state to be released can be determined based on the RRC state reported by the terminal in step 5, or released to the corresponding RRC state based on protocol agreements (for example, it is agreed by the protocol to be released to the RRC idle state). Optionally, if the RRC release message is not received during the operation of a pre-defined timer, the terminal is locally released. Optionally, the release reason value is set to one of RRC connection failure, busy indication failure, and others.

[0208] In step 7, the anchor base station or the last serving base station of card 2 sends a NAS busy indication to the core network.

[0209] In step 8, the core network receives the NAS layer busy message and then does not resume paging the terminal for a while.

[0210] In the above embodiment, when the terminal sends an RRC layer or NAS busy indication, if a failure occurs in the Random Access Channel (RACH), the terminal stops sending the busy indication.

[0211] It should be noted that the execution entity of the busy indication transmission method provided in the embodiments of the present application may be a busy indication transmission device, or a control module in the busy indication transmission device for executing the busy indication transmission method. In the embodiments of the present application, taking the busy indication transmission device executing the busy indication transmission method as an example, the busy indication transmission device provided in the embodiments of the present application is described.

[0212] Referring to FIG. 4, an embodiment of the present application further provides a busy indication transmission device 40. The device includes the following determination module 41 and first transmission module 42.

[0213] The determination module 41 is used to determine whether to send a busy indication to the network side after intercepting a paging message.

[0214] The first transmission module 42 is used to send a busy indication to the network side when it is determined to send a busy indication to the network side.

[0215] In the embodiment of the present application, after intercepting a paging message, if the transmission condition of the busy indication is satisfied, a busy indication can be sent to the network side, whereby the network side can execute corresponding processing, and waste of network resources caused by continuously paging the terminal can be avoided. If the condition is not satisfied, it is possible to select not to send a busy indication, thereby avoiding affecting the running service as much as possible.

[0216] Optionally, the busy indication is used to instruct that the terminal does not accept paging or rejects paging.

[0217] Optionally, the busy indication includes at least one of an RRC layer busy indication and an NAS busy indication.

[0218] Optionally, the determination module 41 is used to send a busy indication to the network side according to the RRC state when the terminal receives the paging message.

[0219] Optionally, the determination module 41 is used to determine to send the busy indication to the network side when at least one of the first condition, the second condition, and the third condition is satisfied.

[0220] Here, the first condition is that the paging message is sent from the network side of one card of the terminal, and the priority of the service corresponding to the paging message is equal to or lower than the priority of the service that the terminal is executing or attempting to execute on other cards; the paging message is sent from the network side of one card of the terminal, and other cards of the terminal are executing or attempting to execute a predetermined service; the terminal has not sent departure instruction information for instructing that the terminal cannot transmit and receive data on the network side to the network side before intercepting the paging message; the terminal has not sent the busy indication to the network side before intercepting the paging message, and includes at least one of them.

[0221] The second condition is that the anchor base station or the last serving base station can receive or process the RRC layer busy indication, or has requested the terminal to send the RRC layer busy indication; the anchor base station or the last serving base station supports the transmission of the paging reason value; the anchor base station or the last serving base station supports functions or features related to the multi-card terminal, and includes at least one of them.

[0222] The third condition is that the core network can receive or process the NAS busy indication, or has requested the terminal to send the NAS busy indication; the core network supports the transmission of the paging reason value; the core network supports functions or features related to the multi-card terminal, and includes at least one of them.

[0223] Optionally, the busy indication transmission device further includes at least one of the following: a first receiving module, a second receiving module, a third receiving module, a fourth receiving module, a fifth receiving module, a sixth receiving module, and a second transmitting module.

[0224] The first receiving module is used to receive, by means of a broadcast message or dedicated signaling, first indication information for indicating whether an anchor base station or the last serving base station can receive or process an RRC layer busy indication, or whether it has requested the terminal to transmit an RRC layer busy indication.

[0225] The second receiving module is used to receive, by means of a broadcast message or dedicated signaling, second indication information for indicating whether the core network can receive or process a NAS busy indication, or whether it has requested the terminal to transmit a NAS busy indication.

[0226] The third receiving module is used to receive, by means of a broadcast message or dedicated signaling, third indication information for indicating whether an anchor base station or the last serving base station supports the transmission of a paging reason value.

[0227] The fourth receiving module is used to receive, by means of a broadcast message or dedicated signaling, fourth indication information for indicating whether the core network supports the transmission of a paging reason value.

[0228] The fifth receiving module is used to receive, by means of a broadcast message or dedicated signaling, fifth indication information for indicating whether an anchor base station or the last serving base station supports functions or features related to a multi-card terminal.

[0229] The sixth receiving module is used to receive, by broadcast message or dedicated signaling, sixth instruction information for instructing whether the core network supports functions or features related to the multi-card terminal.

[0230] The second transmitting module is used to transmit, to the network side, seventh instruction information for instructing whether the terminal supports the transmission of the busy indication.

[0231] Optionally, determining to transmit the busy indication to the network side when at least one of the first condition, the second condition, and the third condition is satisfied, when the second condition and the third condition are satisfied, or when the first condition, the second condition, and the third condition are satisfied, transmitting the RRC layer busy indication, or determining to transmit the busy indication according to the RRC state when the terminal receives the paging message, when the third condition is not satisfied and the second condition is satisfied, or when the third condition is not satisfied and the first condition and the second condition are satisfied, determining to transmit the RRC layer busy indication, when the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, determining to transmit the NAS busy indication, includes at least one of them.

[0232] Optionally, the determination module 41 further when the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, determining not to transmit the busy indication, when the second condition is not satisfied and the third condition is also not satisfied, determining not to transmit the busy indication, is used to execute at least one of them.

[0233] Optionally, sending the busy indication according to the RRC state when the terminal receives the paging message includes: when the terminal is in the RRC inactive state, sending the RRC layer busy indication, or when the terminal is in the RRC idle state, sending the NAS busy indication.

[0234] Optionally, the busy indication is carried in one of the following messages: RRC connection resume request message, RRC connection resume completion message, RRC connection establishment request message, RRC connection establishment completion message, security mode command SMC completion message, and NAS message.

[0235] Optionally, the busy indication is further used by the network side to instruct to release the terminal to a first RRC state which is the RRC idle state or the RRC inactive state.

[0236] Optionally, it further includes a first determination module.

[0237] The first determination module is used to determine the paging reason of the paging message based on the third indication information and / or the fourth indication information of the terminal.

[0238] Optionally, the transmission device of the busy indication further includes at least one of the following third transmission module and fourth transmission module.

[0239] The third transmission module is used to send release indication information for instructing the network side to release the terminal to the network side.

[0240] The fourth transmission module is used to send the time of a second timer for instructing the busy time of the terminal or the time when the paging message cannot be received to the network side.

[0241] Optionally, the release instruction information and / or the time of the second timer are carried in one of the following messages: RRC connection resume request message, RRC connection resume completion message, RRC connection establishment request message, RRC connection establishment completion message, security mode command SMC completion message, and NAS message.

[0242] Optionally, the transmission device of the busy indication further includes at least one of the following first processing module, second processing module, and third processing module.

[0243] The first processing module is used for the terminal to enter the RRC idle state when an RRC release message is not received after sending a busy indication to the network side.

[0244] The second processing module is used for the terminal to enter the RRC idle state when the T319 timer times out.

[0245] The third processing module is used to start a first timer for indicating the waiting time until the terminal receives an RRC release message.

[0246] Optionally, the transmission device of the busy indication further includes at least one of the following fourth processing module and fifth processing module.

[0247] The fourth processing module is used to stop the first timer when an RRC release message is received.

[0248] The fifth processing module is used for the terminal to be released to a first RRC state where the terminal is in the RRC idle state or the RRC inactive state when the first timer times out.

[0249] Optionally, the transmission device of the busy indication further includes a fifth transmission module.

[0250] The fifth transmission module is used to transmit the time of the first timer and / or the first RRC state to the network side when or before transmitting the busy indication.

[0251] Optionally, when the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, transmitting the NAS busy indication further includes the RRC layer reporting the paging reason value in the busy indication or the paging message to the upper layer.

[0252] Optionally, the transmission device of the busy indication further includes a sixth processing module.

[0253] The sixth processing module is used for the terminal to enter the RRC idle state after the RRC layer reports the paging reason value in the busy indication or the paging message to the upper layer.

[0254] Optionally, the transmission device of the busy indication further includes a seventh processing module.

[0255] The seventh processing module is used to set a release reason value after the terminal enters the RRC idle state.

[0256] Optionally, the release reason value includes at least one of RRC connection failure, RRC connection resume failure, busy indication failure, and a first reason value.

[0257] Optionally, the transmission device of the busy indication further includes an eighth processing module.

[0258] The eighth processing module is used to stop transmitting the busy indication when a random access channel failure occurs when transmitting the busy indication to the network side.

[0259] The busy indication transmission device in the embodiments of this application may be a device, or a component, integrated circuit, or chip in a terminal. The terminal may be a portable terminal or a non-portable terminal. For example, the portable terminal may include, but is not limited to, the types of terminal 11 listed above. The non-portable terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a cash dispenser, or a kiosk, etc., and is not specifically limited in the embodiments of this application.

[0260] The busy indication transmission device in the embodiments of this application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, and is not specifically limited in the embodiments of this application.

[0261] The busy indication transmission device provided in the embodiments of this application can implement each process realized in the embodiment of the method in FIG. 2 and achieve the same technical effects. To avoid repeated description, detailed description is omitted here.

[0262] It should be noted that the execution subject of the busy indication transmission method provided in the embodiments of this application may also be the busy indication transmission device or a control module for executing the busy indication transmission method in the busy indication transmission device. In the embodiments of this application, the busy indication transmission device is taken as an example of executing the busy indication transmission method to describe the busy indication transmission device provided in the embodiments of this application.

[0263] Referring to FIG. 5, the embodiments of this application further provide a busy indication transmission device 50. The device includes the following receiving module 51 and processing module 52.

[0264] The receiving module 51 is used to receive the busy indication transmitted from the terminal.

[0265] The processing module 52 is used to execute corresponding operations according to the busy indication.

[0266] Optionally, the busy indication includes at least one of an RRC layer busy indication and an NAS busy indication.

[0267] Optionally, the busy indication includes an RRC layer busy indication, and the processing module 52 is used to execute a first operation according to the busy indication, and the first operation includes: not stopping or resuming paging related to the terminal; discarding or blocking or caching the received downlink data or signaling. At least one of the above is included.

[0268] Optionally, executing the first operation according to the busy indication includes: starting a second timer after receiving the RRC layer busy indication; executing the first operation during the operation of the second timer; stopping the second timer when an uplink message transmitted from the terminal is received; stopping the first operation when the second timer times out. These are included.

[0269] Optionally, the busy indication includes an NAS busy indication, and the processing module 52 is used to execute a second operation according to the busy indication, and the second operation includes: transmitting the busy indication to the anchor base station or the last serving base station of the terminal; stopping the transmission of downlink data or signaling to the anchor base station or the last serving base station of the terminal; not stopping or resuming paging related to the terminal; including at least one of discarding, blocking, or caching the received downlink data or signaling.

[0270] Optionally, performing a second operation according to the busy indication includes starting a second timer after receiving the NAS busy indication; performing the second operation during the operation of the second timer; stopping the second timer when an uplink message transmitted from the terminal is received; and stopping the second operation when the second timer times out.

[0271] Optionally, the transmission device 50 of the busy indication further includes a second receiving module.

[0272] The indication information receiving module is used to receive release indication information transmitted from the terminal for instructing the network side to release the terminal.

[0273] Optionally, the transmission device 50 of the busy indication includes at least one of the following transmission module and release module.

[0274] The transmission module is used to transmit an RRC release message to the terminal based on the release indication information.

[0275] The release module is used to release the terminal to the RRC idle state or RRC inactive state indicated by the release indication information.

[0276] The transmission device of the busy indication provided in the embodiments of the present application can realize each process realized in the method embodiment of FIG. 3 and achieve similar technical effects. To avoid repeated description, detailed description is omitted here.

[0277] As shown in FIG. 6, an embodiment of the present application further provides a communication device 60. The communication device 60 includes a processor 61, a memory 62, and a program or command stored in the memory 62 and executable on the processor 61. For example, when the communication device 60 is a terminal, when the program or command is executed by the processor 61, each process of the embodiment of the above busy indication transmission method is realized, and the same technical effect can be achieved. When the communication device 60 is a network-side device, when the program or command is executed by the processor 61, each process of the embodiment of the above busy indication transmission method is realized, and the same technical effect can be achieved. To avoid repeated description, detailed description is omitted here.

[0278] FIG. 7 is a schematic diagram of the hardware structure of a terminal for realizing an embodiment of the present application. The terminal 70 includes components such as a high-frequency unit 71, a network module 72, an audio output unit 73, an input unit 74, a sensor 75, a display unit 76, a user input unit 77, an interface unit 78, a memory 79, and a processor 710, but is not limited thereto.

[0279] Those skilled in the art will understand that the terminal 70 may further include a power source (for example, a battery) for supplying power to each component, and the power source is logically connected to the processor 710 by a power management system, and the power management system can realize functions such as charge and discharge management and power consumption management. The structure of the terminal shown in FIG. 7 does not limit the terminal, and the terminal may include more or fewer components than shown in the figure, or a combination of some components, or different component arrangements, and detailed description is omitted here.

[0280] In the embodiments according to this application, it should be understood that the input unit 74 may include a graphics processing unit (GPU) 741 that processes image data of a still image or video acquired by an image acquisition device (e.g., a camera) in a video acquisition mode or an image acquisition mode, and a microphone 742. The display unit 76 may include a display panel 761, and the display panel 761 may be arranged in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 77 includes a touch panel 771 and other input devices 772. The touch panel 771 is also called a touch screen. The touch panel 771 may include two parts: a touch detection device and a touch controller. The other input devices 772 may include a physical keyboard, function buttons (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, an operation lever, etc., but are not limited thereto, and detailed descriptions thereof are omitted here.

[0281] In the embodiments of this application, after receiving the downlink data from the network-side device, the high-frequency unit 71 processes it with the processor 710 and also transmits the uplink data to the network-side device. Usually, the high-frequency unit 71 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0282] The memory 79 can be used to store software programs or commands and various data. The memory 79 may mainly include an area for storing programs or commands that can store an operating system, applications or commands necessary for at least one function (such as a voice playback function, an image playback function, etc.) and a data storage area. Also, the memory 79 may include a high-speed random access memory or a non-volatile memory. Among them, the non-volatile memory may 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. For example, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices can be mentioned.

[0283] The processor 710 may include one or more processing units. Optionally, the processor 710 can integrate an application processor that mainly processes an operating system, a user interface, and applications or commands, etc., and a modem processor such as a baseband processor that mainly processes wireless communication. It can be understood that the above modem processor may not be integrated into the processor 710.

[0284] Here, the processor 710 is used to determine whether to send a busy indication to the network side after intercepting a paging message.

[0285] When it is determined that the high-frequency unit 71 needs to send a busy indication to the network side, it is used to send the busy indication to the network side.

[0286] Optionally, the busy indication includes at least one of an RRC layer busy indication and an NAS busy indication.

[0287] Optionally, the processor 710 is used to determine whether to send a busy indication to the network side after intercepting a paging message. When at least one of a first condition, a second condition, and a third condition is satisfied, it includes determining to send the busy indication to the network side.

[0288] Here, the first condition is the paging message is sent from the network side of one card of the terminal, and the priority of the service corresponding to the paging message is less than or equal to the priority of the service that the terminal is executing or attempting to execute on other cards; the paging message is sent from the network side of one card of the terminal, and other cards of the terminal are executing or attempting to execute a predetermined service; the terminal has not sent departure indication information for instructing that the terminal cannot send and receive data on the network side to the network side before intercepting the paging message; the terminal has not sent the busy indication to the network side before intercepting the paging message, including at least one of them.

[0289] The second condition is the anchor base station or the last serving base station can receive or process an RRC layer busy indication, or has requested the terminal to send an RRC layer busy indication; the anchor base station or the last serving base station supports sending a paging reason value; the anchor base station or the last serving base station supports functions or features related to a multi-card terminal, including at least one of them.

[0290] The third condition is that the core network can receive or process a NAS busy indication, or has requested the terminal to send a NAS busy indication, and the core network supports sending a paging reason value, and the core network supports at least one of functions or features related to a multi - card terminal.

[0291] Optionally, the high - frequency unit 71 further receives, by means of a broadcast message or dedicated signaling, first indication information for indicating whether an anchor base station or a last serving base station can receive or process an RRC layer busy indication, or has requested the terminal to send an RRC layer busy indication, and receives, by means of a broadcast message or dedicated signaling, second indication information for indicating whether the core network can receive or process a NAS busy indication, or has requested the terminal to send a NAS busy indication, and receives, by means of a broadcast message or dedicated signaling, third indication information for indicating whether an anchor base station or a last serving base station supports sending a paging reason value, and receives, by means of a broadcast message or dedicated signaling, fourth indication information for indicating whether the core network supports sending a paging reason value, and receives, by means of a broadcast message or dedicated signaling, fifth indication information for indicating whether an anchor base station or a last serving base station supports functions or features related to a multi - card terminal, and receives, by means of a broadcast message or dedicated signaling, sixth indication information for indicating whether the core network supports functions or features related to a multi - card terminal. It is used to execute at least one of: transmitting seventh indication information for instructing whether the terminal supports transmission of the busy indication to the network side.

[0292] Optionally, the processor 710 is used to determine to transmit the busy indication to the network side when at least one of a first condition, a second condition, and a third condition is satisfied. When the second condition and the third condition are satisfied, or when the first condition, the second condition, and the third condition are satisfied, determining to transmit the RRC layer busy indication, or transmitting the busy indication according to the RRC state when the terminal receives the paging message. When the third condition is not satisfied and the second condition is satisfied, or when the third condition is not satisfied and the first condition and the second condition are satisfied, determining to transmit the RRC layer busy indication. When the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, including at least one of determining to transmit the NAS busy indication.

[0293] Optionally, the processor 710 is used to determine whether to transmit a busy indication to the network side. When the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, determining not to transmit the busy indication. Including at least one of determining not to transmit the busy indication when the second condition is not satisfied and the third condition is also not satisfied.

[0294] Optionally, the processor 710 is used to transmit the busy indication according to the RRC state when the terminal receives the paging message. When the terminal is in the RRC inactive state, sending the RRC layer busy indication, or When the terminal is in the RRC idle state, sending the NAS busy indication, is included.

[0295] Optionally, the busy indication is carried in one of a RRC connection resume request message, a RRC connection resume completion message, a RRC connection establishment request message, a RRC connection establishment completion message, a security mode command SMC completion message, and a NAS message.

[0296] Optionally, the high-frequency unit 71 is further used to send release indication information for instructing the network side to release the terminal to the network side, and used to execute at least one of instructing the network side of the time of a second timer for instructing the busy time of the terminal or the time when a paging message cannot be received.

[0297] Optionally, the release indication information and / or the time of the second timer is carried in one of a RRC connection resume request message, a RRC connection resume completion message, a RRC connection establishment request message, a RRC connection establishment completion message, a security mode command SMC completion message, and a NAS message.

[0298] Optionally, after the processor 710 sends a busy indication to the network side, if a RRC release message is not received, the terminal enters the RRC idle state, and when the T319 timer times out, the terminal enters the RRC idle state, and used to execute at least one of starting a first timer for instructing the waiting time until the terminal receives a RRC release message.

[0299] Optionally, the processor 710 is further When receiving an RRC release message, stop the first timer, or When the first timer times out, it is used to execute the release of the terminal to a first RRC state where the terminal is in the RRC idle state or the RRC inactive state.

[0300] Optionally, the radio frequency unit 71 is further used to transmit the time of the first timer and / or the first RRC state to the network side when transmitting or before transmitting the busy indication.

[0301] Optionally, the processor 710 is further used to determine to transmit the NAS busy indication when the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied. The RRC layer further includes reporting the paging reason value in the busy indication or the paging message to the upper layer.

[0302] Optionally, the processor 710 is further used to enter the RRC idle state after the RRC layer reports the paging reason value in the busy indication or the paging message to the upper layer.

[0303] Optionally, the processor 710 is further used to set a release reason value after entering the RRC idle state.

[0304] Optionally, the release reason value includes at least one of RRC connection failure, RRC connection resume failure, busy indication failure, and a first reason value.

[0305] Optionally, the processor 710 is further used to stop transmitting the busy indication when a random access channel failure occurs when transmitting the busy indication to the network side.

[0306] The embodiments of the present application further provide a network-side device. As shown in FIG. 8, the network device 80 includes an antenna 81, a radio frequency device 82, and a baseband device 83. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information via the antenna 81 and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted, and transmits it to the radio frequency device 82. The radio frequency device 82 processes the received information and then transmits it via the antenna 81.

[0307] The above frequency band processing device may be in the baseband device 83. The method executed by the network-side device in the above embodiments can be implemented by the baseband device 83. The baseband device 83 includes a processor 84 and a memory 85.

[0308] The baseband device 83 may include, for example, at least one baseband board on which a plurality of chips are installed. As shown in FIG. 8, one of the chips is, for example, connected to the memory 85 to call a program in the memory 85 and is the processor 84 that executes the operations of the network device shown in the above method embodiments.

[0309] The baseband device 83 may further include a network interface 86 for communicating with the radio frequency device 82. The interface is, for example, a common public radio interface (abbreviated as CPRI).

[0310] Specifically, the network-side device of the embodiments of the present invention further includes a program or command stored in the memory 85 and executable on the processor 84. The processor 84 calls the program or command in the memory 85 to execute the methods executed by the modules shown in FIG. 5 and achieve similar technical effects. To avoid repeated description, detailed description is omitted here.

[0311] Embodiments of the present application further provide a readable storage medium. A program or command is stored in the readable storage medium. When the program or command is executed by a processor of a terminal, each process of the embodiment of the method for transmitting a busy instruction executed by the terminal is realized, and the same technical effect can be achieved. To avoid repeated description, detailed description is omitted here.

[0312] Embodiments of the present application further provide a readable storage medium. A program or command is stored in the readable storage medium. When the program or command is executed by a processor of a network-side device, each process of the embodiment of the method for transmitting a busy instruction executed by the network-side device is realized, and the same technical effect can be achieved. To avoid repeated description, detailed description is omitted here.

[0313] Here, the readable storage medium includes computer-readable storage media such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0314] Embodiments of the present application further provide a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor executes a program or command of a terminal and is used to realize each process of the embodiment of the method for transmitting a busy instruction executed by the above-mentioned terminal, and the same technical effect can be achieved. To avoid repeated description, detailed description is omitted here.

[0315] Embodiments of the present application further provide a chip. The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor executes a program or command of a network-side device and is used to implement each process of the embodiment of the method for transmitting a busy instruction executed by the above-mentioned network side, and can achieve similar technical effects. To avoid repeated description, detailed description is omitted here.

[0316] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system chip, a chip system, a system-on-chip, etc.

[0317] Embodiments of the present application further provide a computer program product. The computer program product is stored in a non-volatile storage medium and is executed by at least one processor to implement each process of the embodiment of the method for transmitting a busy instruction executed by the above-mentioned terminal, and can achieve similar technical effects. To avoid repeated description, detailed description is omitted here.

[0318] Embodiments of the present application further provide a computer program product. The computer program product is stored in a non-volatile storage medium and is executed by at least one processor to implement each process of the embodiment of the method for transmitting a busy instruction executed by the above-mentioned network side, and can achieve similar technical effects. To avoid repeated description, detailed description is omitted here.

[0319] It should be noted that in this specification, the term "comprising", "consisting of" or any other variation thereof is intended to include non-exclusive inclusion, whereby a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such a process, method, article or apparatus. Unless otherwise specified, the elements limited by the phrase "comprising one..." do not exclude the further existence of the same other elements in the process, method, article or apparatus comprising the said element. It should also be pointed out that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order illustrated or considered, and may also include performing functions substantially simultaneously or in the reverse order according to such functions. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. Also, the features described with reference to any example may be combined in other examples.

[0320] From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above examples can be realized in the form of a combination of software and the necessary common hardware platform. Naturally, it may also be realized by hardware, but in many cases the former is a more preferred embodiment. Based on such an understanding, the technical solution of this application, in essence or the part contributing to the prior art, can be implemented in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a plurality of commands for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the embodiments of this application.

[0321] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. A method for transmitting a busy indication executed by a terminal, comprising: after intercepting a paging message, determining whether to send a busy indication to the network side; when it is determined to send a busy indication to the network side, sending the busy indication to the network side, wherein the busy indication is used to instruct that the terminal does not accept paging or rejects paging; the busy indication is further used to instruct the network side to release the terminal so that the terminal enters a first RRC state which is a radio resource control (RRC) idle state or an RRC inactive state.

2. The method according to claim 1, wherein the busy indication includes at least one of an RRC layer busy indication and a non-access stratum (NAS) busy indication.

3. The step of determining whether to send a busy indication to the network side includes: sending a busy indication to the network side according to the RRC state when the terminal receives the paging message, as described in claim 1.

4. The step of determining whether to send a busy indication to the network side after intercepting a paging message includes: when at least one of a first condition, a second condition, and a third condition is satisfied, determining to send the busy indication to the network side, wherein the first condition includes at least one of: the paging message is sent from the network side of one card of the terminal, and the priority of the service corresponding to the paging message is lower than or equal to the priority of the service that the terminal is executing or attempting to execute on other cards; the paging message is sent from the network side of one card of the terminal, and other cards of the terminal are executing or attempting to execute a predetermined service; the terminal has not sent to the network side departure indication information for instructing that the terminal cannot send and receive data on the network side before intercepting the paging message; the terminal has not sent the busy indication to the network side before intercepting the paging message; the second condition includes: The anchor base station or the last serving base station can receive or process an RRC layer busy indication, or has requested the terminal to transmit an RRC layer busy indication, and The anchor base station or the last serving base station supports the transmission of a paging reason value, and The anchor base station or the last serving base station supports at least one of functions or features related to a multi-card terminal, The third condition is that The core network can receive or process a NAS busy indication, or has requested the terminal to transmit a NAS busy indication, and The core network supports the transmission of a paging reason value, and The core network supports at least one of functions or features related to a multi-card terminal, the method according to claim 1.

5. Before determining whether to transmit a busy indication to the network side, Receiving, by broadcast message or dedicated signaling, first indication information for indicating whether the anchor base station or the last serving base station can receive or process an RRC layer busy indication, or has requested the terminal to transmit an RRC layer busy indication; Receiving, by broadcast message or dedicated signaling, second indication information for indicating whether the core network can receive or process a NAS busy indication, or has requested the terminal to transmit a NAS busy indication; Receiving, by broadcast message or dedicated signaling, third indication information for indicating whether the anchor base station or the last serving base station supports the transmission of a paging reason value; Receiving, by broadcast message or dedicated signaling, fourth indication information for indicating whether the core network supports the transmission of a paging reason value; Receiving, by broadcast message or dedicated signaling, fifth indication information for indicating whether the anchor base station or the last serving base station supports functions or features related to a multi-card terminal; Receiving, by broadcast message or dedicated signaling, sixth indication information for indicating whether the core network supports functions or features related to a multi-card terminal. The method according to claim 1, further comprising at least one of the steps of transmitting, to the network side, seventh indication information for indicating whether the terminal supports transmission of the busy indication.

6. When at least one of the first condition, the second condition, and the third condition is satisfied, the step of determining to transmit the busy indication to the network side is When the second condition and the third condition are satisfied, or when the first condition, the second condition, and the third condition are satisfied, determining to transmit the RRC layer busy indication, or determining to transmit the busy indication according to the RRC state when the terminal receives the paging message; When the third condition is not satisfied and the second condition is satisfied, or when the third condition is not satisfied and the first condition and the second condition are satisfied, determining to transmit the RRC layer busy indication; including at least one of the steps of: when the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, determining to transmit the NAS busy indication. The method according to claim 4.

7. The step of determining whether to transmit the busy indication to the network side is including at least one of the steps of: when the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, determining not to transmit the busy indication; when the second condition is not satisfied and the third condition is also not satisfied, determining not to transmit the busy indication. The first condition is the paging message is transmitted from the network side of one card of the terminal, and the priority of the service corresponding to the paging message is less than or equal to the priority of the service that the terminal is executing or attempting to execute on other cards; the paging message is transmitted from the network side of one card of the terminal, and other cards of the terminal are executing or attempting to execute a predetermined service. The terminal has not transmitted departure instruction information for instructing that the terminal cannot transmit or receive data on the network side until the terminal intercepts the paging message, and the terminal has not transmitted the busy indication to the network side until the terminal intercepts the paging message, including at least one of the above. The second condition is the anchor base station or the last serving base station can receive or process the RRC layer busy indication, or has requested the terminal to transmit the RRC layer busy indication, the anchor base station or the last serving base station supports the transmission of the paging reason value, and the anchor base station or the last serving base station supports functions or features related to the multi-card terminal, including at least one of the above. The third condition is the core network can receive or process the NAS busy indication, or has requested the terminal to transmit the NAS busy indication, the core network supports the transmission of the paging reason value, and the core network supports functions or features related to the multi-card terminal, including at least one of the above. The method according to claim 1.

8. The step of transmitting the busy indication according to the RRC state when the terminal receives the paging message is when the terminal is in the RRC inactive state, the step of transmitting the RRC layer busy indication, or when the terminal is in the RRC idle state, the step of transmitting the NAS busy indication. The method according to claim 3.

9. The method according to claim 1 further includes the step of instructing the network side of the time of the second timer for instructing the busy time of the terminal or the time when the paging message cannot be received.

10. After transmitting the busy indication to the network side, if the RRC release message is not received, the step of the terminal entering the RRC idle state, when the T319 timer times out, the step of the terminal entering the RRC idle state, and the method according to claim 1 further includes at least one of the steps of starting a first timer for instructing the waiting time until the terminal receives the RRC release message.

11. After starting the first timer, When receiving an RRC release message, stopping the first timer, or when the first timer times out, releasing the terminal to a first RRC state that is the RRC idle state or the RRC inactive state, further comprising: wherein, when transmitting the busy indication or before transmitting the busy indication, further comprising transmitting the time of the first timer and / or the first RRC state to the network side. The method according to claim 10. **Claim 12** When the second condition is not satisfied and the third condition is satisfied, or when the second condition is not satisfied and the first condition and the third condition are satisfied, the step of transmitting the NAS busy indication is: The RRC layer further comprises reporting the paging reason value in the busy indication or the paging message to the upper layer. Here, after the RRC layer reports the paging reason value in the busy indication or the paging message to the upper layer, the method according to claim 6, further comprising the step of the terminal entering the RRC idle state. **Claim 13** A method for transmitting a busy indication executed by a network-side device, comprising: receiving a busy indication transmitted from a terminal, wherein the busy indication is used to indicate that the terminal does not accept paging or rejects paging; performing an operation corresponding to the busy indication; and the busy indication is further used to indicate to the network side to release the terminal to a first RRC state that is the radio resource control (RRC) idle state or the RRC inactive state. A method for transmitting a busy indication. **Claim 14** A terminal comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, wherein when the program or command is executed by the processor, the steps of the method for transmitting a busy indication according to any one of claims 1 to 12 are realized. **Claim 15** A network-side device comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, wherein when the program or command is executed by the processor, the steps of the method for transmitting a busy indication according to claim 13 are realized.

Images