Paging method, terminal, access network equipment, core network equipment and storage medium

Abstract

A paging method, terminal, access network device, core network device and storage medium. The method comprises: monitoring the paging message about the second user identification card; sending access layer signaling to the network of the second user identification card, the access layer signaling includes busy indication information; or sending small packet data transmission signaling to the network of the second user identification card, the small packet data transmission signaling includes busy indication information. Applying the above scheme can shorten the time consumed by the terminal to feedback the busy indication information.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a paging method, a terminal, an access network device, a core network device and a storage medium. Background Art

[0002] In order to facilitate users to flexibly select mobile networks according to their own needs, most mobile terminals have a multi-SIM function.

[0003] In a multi-card mobile terminal, when one user identification card is in a connected state, other user identification cards also need to monitor paging messages. Take the case where the terminal monitors a paging message from card 2 when card 1 is in a connected state. If the terminal determines not to respond to the paging message, it needs to feedback a busy indication to the network of card 2 through card 2. Otherwise, the network of card 2 will think that the number corresponding to the card has not been paged and will expand the paging range and repeat the paging, resulting in a waste of network resources.

[0004] However, the existing solution for feeding back busy indication information takes a long time and has a certain impact on the performance of the user identification card in the connected state. Summary of the invention

[0005] The problem to be solved by the present invention is: how to shorten the time consumed by the terminal to feed back busy indication information.

[0006] To solve the above problem, an embodiment of the present invention provides a paging method, which is applied to a multi-card terminal, wherein the multi-card terminal includes a first user identification card and a second user identification card; the method includes:

[0007] monitoring a paging message about the second user identification card; the second user identification card is any user identification card in the multi-card terminal that is different from the first user identification card;

[0008] An access layer signaling is sent to the network of the second subscriber identity card, wherein the access layer signaling includes busy indication information; or a packet data transmission signaling is sent to the network of the second subscriber identity card, wherein the packet data transmission signaling includes busy indication information.

[0009] Optionally, the signaling for sending the busy indication information includes busy indication information transmission identification information, which is used to indicate that the current signaling is used to transmit the busy indication information.

[0010] Optionally, the packet transmission signaling includes: packet data control plane transmission signaling;

[0011] Sending small packet data transmission signaling to the network of the second user identification card includes: sending the small packet data control plane transmission signaling to a core network control device corresponding to the second user identification card.

[0012] Optionally, the small packet transmission signaling includes: small packet data user plane transmission signaling;

[0013] Sending small packet data transmission signaling to the network of the second user identification card includes: sending small packet data user plane transmission signaling to an access network device corresponding to the second user identification card.

[0014] Optionally, sending access layer signaling to the network of the second subscriber identity card, wherein the access layer signaling includes busy indication information, including:

[0015] An RRC recovery request message or an RRC establishment completion message is sent to the network of the second user identification card, wherein the reserved bit of the RRC recovery request message or the RRC establishment completion message includes the busy indication information.

[0016] Optionally, sending access layer signaling to the network of the second subscriber identity card, wherein the access layer signaling includes busy indication information, including:

[0017] A data packet containing access layer signaling is transmitted to the network of the second user identification card, wherein a reserved bit of a PDCP header or a MAC header in the data packet contains the busy indication information.

[0018] Optionally, based on the paging reason information in the paging message, select to send access layer signaling or packet data transmission signaling to the network of the second subscriber identity card.

[0019] The embodiment of the present invention further provides a paging method, the method comprising:

[0020] Receive access layer signaling or small packet data user plane transmission signaling;

[0021] When the access layer signaling or the small packet data user plane transmission signaling includes busy indication information, the busy indication information is sent to the core network control device, and the core network control device is the busy indication information processing device.

[0022] Optionally, the access layer signaling or the small packet data user plane transmission signaling further includes: busy indication information transmission identification information, used to indicate that the current signaling is used to transmit the busy indication information.

[0023] Optionally, sending the busy indication information to the core network control device further includes sending busy indication information transmission identification information to the core network control device; the busy indication information transmission identification information is used to indicate that current signaling is used to transmit the busy indication information.

[0024] The embodiment of the present invention further provides a paging method, the method comprising:

[0025] Receive small packet data control plane transmission signaling;

[0026] When the packet data control plane transmission signaling includes busy indication information, a paging stop operation is performed.

[0027] Optionally, the packet data control plane transmission signaling further includes: busy indication information transmission identification information, used to indicate that the current signaling is used to transmit the busy indication information.

[0028] The embodiment of the present invention further provides another paging method, which is characterized by comprising:

[0029] Receive signaling sent by access network equipment;

[0030] When the signaling sent by the access network device includes busy indication information, a paging stop operation is performed.

[0031] Optionally, the signaling sent by the access network device further includes: busy indication information transmission identification information, used to indicate that the current signaling is used to transmit the busy indication information.

[0032] An embodiment of the present invention further provides a terminal, including a first user identification card and a second user identification card, the terminal comprising:

[0033] A monitoring unit, adapted to monitor a paging message about the second user identification card; the second user identification card is any user identification card in the terminal that is different from the first user identification card;

[0034] The feedback unit is adapted to send access layer signaling to the network of the second user identification card, wherein the access layer signaling includes busy indication information; or send packet data transmission signaling to the network of the second user identification card, wherein the packet data transmission signaling includes busy indication information.

[0035] Optionally, the signaling sending the busy indication information by the feedback unit includes: busy indication information transmission identification information, used to indicate that the current signaling is used to transmit the busy indication information.

[0036] An embodiment of the present invention further provides an access network device, the access network device comprising:

[0037] A first receiving unit, adapted to receive access layer signaling or small packet data user plane transmission signaling;

[0038] The first processing unit is adapted to send the busy indication information to the core network control device when the access layer signaling or the small packet data user plane transmission signaling includes the busy indication information, and the core network control device is the busy indication information processing device.

[0039] An embodiment of the present invention further provides a core network control device, the core network control device comprising:

[0040] A second receiving unit, adapted to receive a packet data control plane transmission signaling;

[0041] The second processing unit is adapted to perform a paging stop operation when the packet data control plane transmission signaling includes busy indication information.

[0042] An embodiment of the present invention further provides another core network control device, the core network control device comprising:

[0043] A third receiving unit, adapted to receive signaling sent by the access network device;

[0044] The second processing unit is adapted to perform a paging stop operation when the signaling sent by the access network device includes busy indication information.

[0045] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. The computer program is executed by a processor to implement the steps of any of the above methods.

[0046] An embodiment of the present invention further provides a terminal, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of any one of the above methods when running the computer program.

[0047] An embodiment of the present invention further provides an access network device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of any of the above methods when running the computer program.

[0048] An embodiment of the present invention further provides a core network control device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of any one of the above methods when running the computer program.

[0049] Compared with the prior art, the technical solution of the embodiment of the present invention has the following advantages:

[0050] The scheme of the present invention is applied, when the paging message of the second user identification card is monitored, the network of the second user identification card is sent busy indication information through access layer signaling or packet data transmission signaling. The core network control device corresponding to the second user identification card, when the access layer signaling or packet data transmission signaling includes the busy indication information, promptly performs the paging stop operation, and does not need to send any response to the terminal. The whole busy indication information process is transmitted by means of the existing flow, and there is no need to additionally establish a radio resource control connection from the terminal to the access network device, and there is no need to establish a corresponding bearer between the access network device and the core network control device, so the busy indication information can be fed back to the network of the second user identification card more quickly, and the time consumption is greatly shortened. At the same time, since the first user identification card is in a connection suspension state while the busy indication information corresponding to the second user identification card is fed back, after the time of the second user identification card feeding back the busy indication information is shortened, the duration of the first user identification card in the connection suspension state is also shortened, and the performance impact on the first user identification card is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a flow chart of a paging method in an embodiment of the present invention;

[0052] Figure 2 It is a structural diagram of a PDCP header in an embodiment of the present invention;

[0053] Figure 3 is a schematic diagram of the structure of a MAC header in an embodiment of the present invention;

[0054] Figure 4 is a flow chart of another paging method in an embodiment of the present invention;

[0055] Figure 5 is a flow chart of another paging method in an embodiment of the present invention;

[0056] Figure 6 is a flow chart of another paging method in an embodiment of the present invention;

[0057] Figure 7 is a schematic diagram of signaling interaction in a paging process in an embodiment of the present invention;

[0058] Figure 8 is a schematic diagram of signaling interaction of another paging process in an embodiment of the present invention;

[0059] Fig. 9 is a schematic diagram of the structure of a terminal in an embodiment of the present invention;

[0060] Fig.10 is a schematic diagram of the structure of an access network device in an embodiment of the present invention;

[0061] Fig.11is a structural diagram of a core network control device in an embodiment of the present invention;

[0062] Fig.12 It is a structural diagram of another core network control device in an embodiment of the present invention. DETAILED DESCRIPTION

[0063] A multi-card mobile terminal includes multiple user identification cards, taking card 1 and card 2 as an example, when card 1 is in a connected state, the terminal needs to monitor a paging message on card 2. When a paging message is monitored under card 2, the terminal may respond to the paging message or not.

[0064] Specifically, the paging message may carry a paging reason value. When the terminal monitors the paging message under card 2 and obtains the paging reason value, it can determine whether to continue communicating under card 1 or respond to the paging message of card 2 and switch to card 2 for communication according to the priority of the service currently being carried out under card 1 and the priority of the service that triggers the paging message of card 2.

[0065] For example, if the current communication on card 1 is a general data service, and the paging on card 2 is triggered by a voice service, then the UE can disconnect the connection on card 1, respond to the paging message on card 2, and communicate on card 2. Otherwise, the communication on card 1 can be maintained without responding to the paging message on card 2. At this time, the terminal needs to feedback busy indication information to the network of card 2 to avoid the network of card 2 from continuing to page card 2, resulting in a waste of network resources.

[0066] At present, the terminal feeds back the busy indication information through the Non-Access Stratum (NAS) signaling. Specifically, the terminal needs to establish a Radio Resource Control (RRC) connection between the terminal and the base station, as well as a bearer between the base station and the core network control device under the network of card 2, before transmitting the NAS message carrying the busy indication information. In addition, after the terminal feeds back the NAS message to the core network, it needs to wait for the response message sent by the core network control device through the base station to complete the transmission of the busy message. The whole process of busy indication information transmission takes a long time.

[0067] During the entire process of busy indication information transmission, the terminal is still in a connection suspension state in the network of card 1. If the suspension time is too long, it may affect the connection recovery between the terminal and the network of card 1. For example, the terminal may lose synchronization with the network of card 1 and need to be resynchronized, which will have a certain impact on the performance of the terminal in the network of card 1.

[0068] To address this problem, the present invention provides a paging method, which, when busy indication information needs to be fed back, transmits the busy indication information to the network of the second user identification card by means of the transmission process of the existing access layer signaling or the small packet data transmission signaling. There is no need to additionally establish a wireless resource control connection from the terminal to the base station, nor is there a need to establish a corresponding bearer between the base station and the core network equipment, and there is no need to wait for the core network's response to the busy indication information. The time consumption is greatly shortened, and the performance impact on the user identification card in the connected state is also greatly reduced.

[0069] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0070] Reference Figure 1 The embodiment of the present invention provides a paging method, which is applied to a multi-card terminal, and the multi-card terminal includes a first user identification card and a second user identification card. Specifically, the method may include the following steps:

[0071] Step 11, monitoring a paging message about the second user identification card; the second user identification card is any user identification card in the multi-card terminal that is different from the first user identification card.

[0072] In a specific implementation, the multi-card terminal includes but is not limited to a dual-card mobile terminal. In other words, the number of user identification cards included in the multi-card terminal includes but is not limited to dual cards, and may also include three or more user identification cards. All user identification cards in the multi-card terminal share the same radio frequency and baseband components.

[0073] In a specific implementation, the first user identification card is a user identification card in a connected state in the multi-card terminal. The number of user identification cards in a connected state in the multi-card terminal may be one, or two or more, and is not specifically limited. As long as one of the user identification cards is in a connected state, the paging method in the embodiment of the present invention may be used to feed back busy indication information to other user identification cards in a non-connected state.

[0074] In a specific implementation, the second user identification card is any user identification card in the non-connected state user identification card in the multi-card terminal. The number of user identification cards in the non-connected state in the multi-card terminal may be one, or two or more. For any user identification card in the non-connected state, the paging method in the embodiment of the present invention may be used to feed back corresponding busy indication information.

[0075] In a specific implementation, the network of the first user identification card and the network of the second user identification card are both wireless networks. The wireless network can be a wireless network implemented through a public mobile communication network such as 5G, 4G, 3G or General Packet Radio Service (GPRS), or a wireless local area network (WiFi), etc. There is no specific limitation as long as it is a network that uses radio electromagnetic waves as a transmission medium.

[0076] In a specific implementation, the first SIM card may be interrupted periodically to allow the terminal to monitor the paging message about the second SIM card. The service that triggers the paging message of the second SIM card may be voice service, video service, short message, emergency service and other services.

[0077] In a specific implementation, the terminal may monitor the paging message about the second user identification card, or may not monitor the paging message about the second user identification card. When monitoring the paging message about the second user identification card, the terminal can determine whether to respond to the paging message based on the paging cause value in the paging message.

[0078] Specifically, the terminal can determine the service that triggers the second user identification card based on the paging reason value, and then compare the service priority of the first user identification card with the priority of the service that triggers the second user identification card, and determine whether to continue communicating under the first user identification card or respond to the paging message of the second user identification card and switch to the second user identification card for communication.

[0079] When the service priority of the first subscriber identification card is lower than the priority of the service triggering the second subscriber identification card, the terminal can respond to the paging message of the second subscriber identification card and switch to the second subscriber identification card for communication.

[0080] When the service priority of the first SIM card is higher than the service priority of the second SIM card, the terminal can continue to communicate under the first SIM card and feedback busy indication information to the network of the second SIM card. The busy indication information is used to indicate that the terminal is currently busy and cannot communicate under the second SIM card.

[0081] Step 12: sending access layer signaling to the network of the second subscriber identity card, wherein the access layer signaling includes busy indication information; or sending packet data transmission signaling to the network of the second subscriber identity card, wherein the packet data transmission signaling includes busy indication information.

[0082] In one embodiment, corresponding dedicated resources may be allocated for the transmission of busy indication information through a protocol or a pre-agreed manner, and the resource indication information is used to instruct the terminal to use the pre-allocated dedicated resources to transmit the busy indication information when feeding back the busy indication information. For example, dedicated resources for transmitting the busy indication information may be allocated to the terminal through a system message or RRC signaling.

[0083] When a paging message about the second user identification card is monitored and it is determined not to respond to the paging message, it can be first determined whether the paging message includes resource indication information. If there is resource indication information, the busy indication information is directly transmitted to the network of the second user identification card using the dedicated resources indicated by the resource indication information. If there is no resource indication information, the busy indication information can be sent to the network of the second user identification card through access layer signaling or packet data transmission signaling.

[0084] Of course, in some embodiments, no matter whether the paging message includes resource indication information or not, the busy indication information can be directly sent to the network of the second subscriber identity card through access layer signaling or packet data transmission signaling.

[0085] In another embodiment, the resource indication information may also indicate a resource identifier for specifically transmitting the busy indication information, that is, corresponding resources are allocated for the transmission of the busy indication information through the resource indication information.

[0086] Regardless of whether the resource indication information indicates that the terminal uses pre-allocated dedicated resources to transmit the busy indication information, or indicates a resource identifier for specifically transmitting the busy indication information, there may be multiple dedicated resources for transmitting the busy information.

[0087] In one embodiment, the resource indicated by the resource indication information is a dedicated physical random access channel (PRACH) resource. Once the terminal initiates random access under the resource, the network considers that the terminal feeds back busy indication information.

[0088] In another embodiment, the resource indicated by the resource indication information is a PRACH resource, and the terminal uses the resource to initiate random access, but at the same time carries specific busy indication information with the help of signaling in the random access process. The network obtains the busy indication information from the signaling in the random access process, and at the same time determines that the terminal initiates random access for the resource indicated by the paging message. Only then does the network consider that the terminal feeds back the busy indication information.

[0089] In one embodiment, the resource indicated by the resource indication information is a dedicated configuration (Configuration, CG) resource, specifically a dedicated demodulation reference signal (Demodulation Reference Signal, DMRS) configuration resource.

[0090] In a specific implementation, the network of the second user identification card can configure a cell-specific configuration resource for the terminal to transmit the busy indication information. All or part of the terminals in the cell can share the above configuration resources to feedback the busy indication information. Since different terminals have different DMRS sequences, when the base station receives the busy indication information fed back by the DMRS configuration resource, it can identify the UE that feeds back the busy indication information.

[0091] In a specific implementation, if the terminal is in an idle state, the network of the second user identification card can configure the above-mentioned dedicated configuration resources for the terminal by means of cell broadcast, or carry the configured dedicated configuration resource identifier through a paging message. If the terminal is in an inactive state, the above-mentioned dedicated configuration resources can be stored separately in the base station and the terminal side, or the network of the second user identification card can configure the terminal by means of cell broadcast, or can be indicated by a paging message.

[0092] In a specific implementation, the small packet data transmission signaling includes: early data transmission signaling, and small data transmission signaling (SDT). The early data transmission signaling may include an RRC Early Data Complete message, an RRC Connection Resume Request message, etc. The small packet transmission signaling may include an RRC Resume Request message and an RRC Resume Request 1 message, etc. The small packet data transmission signaling may include a small packet data control plane (CP) signaling and a small packet data user plane (UP) signaling.

[0093] In the process where the packet data control plane transmission signaling is located, the packet data is sent to the core network control device through NAS signaling. For example, the terminal actively sends an RRC data early transmission request to the base station. After receiving the data early transmission request, the base station extracts the NAS signaling in the data early transmission request and forwards the NAS signaling to the core network control device. The improvement of the embodiment of the present invention is that the terminal can transmit the busy indication information to the network of the second user identification card through an RRC data early transmission request message (RRC early data request). For example, the NAS signaling carrying the busy indication information can be carried on the idle bit or the newly added bit of the RRC data early transmission request message.

[0094] In the process where the small packet data user plane signaling is located, the small packet data is transmitted to the base station through the small packet data user plane signaling, and forwarded by the base station to the core network data device. For example, the terminal can send an RRC connection recovery request (RRCResume Request) message to the base station. The improvement of the embodiment of the present invention is that the terminal can carry busy indication information in the uplink data (Uplink data) field of the RRC connection recovery request message through the RRC connection recovery request message. The difference is that when the small packet data user plane signaling carries the busy indication information, the base station needs to forward the busy indication information to the core network control device; otherwise, the base station needs to forward the small packet data to the core network data device.

[0095] In a specific implementation, the content of the uplink data field of the RRC connection recovery request message may include only busy indication information, and may also include other data at the same time. For other data in the content of the uplink data field, the base station will also send it to the core network device through the terminal context recovery request message. After receiving the other data in the terminal context recovery request message, the core network device will modify the bearer between the core network control device and the gateway device and perform data transmission in accordance with the normal process of UP-Clot. After the transmission of the other data is completed, the terminal will release the RRC connection between itself and the base station, as well as the bearer between the base station and the core network device.

[0096] In a specific implementation, busy indication information may also be sent to the network of the second subscriber identity card via access layer signaling, wherein the access layer signaling may be any signaling in the random access process, such as an RRC connection recovery request message, an RRC establishment completion message, and the like.

[0097] In a specific implementation, the RRC connection resumption request message generally includes the following fields: an identity field of the resumption terminal, a media access control address field of the resumption terminal, a resume cause field, and a spare field.

[0098] In one embodiment, by protocol or pre-agreed manner, regardless of whether the resume Identity field in the RRC connection recovery request message is a normal wireless network temporary identifier (i.e., I-RNTI) or a short wireless network temporary identifier (ShortI-RNTI), the terminal can carry busy indication information in a preset bit position of a spare field of the RRC connection recovery request message. The length of the busy indication information can be 1 bit or multiple bits, and the specific number of bits occupied is determined based on the length of the spare field.

[0099] In another embodiment, the resume Cause field of the RRC connection recovery request message also has spare bits, and the terminal may also carry busy indication information in the spare bits of the resume Cause field. The length of the busy indication information may be 1 bit or multiple bits, and the specific number of bits occupied is determined based on the length of the spare bits of the resumeCause field.

[0100] In a specific implementation, the terminal transmits the busy indication information to the UP-Clot process through the access layer signaling of the RRC setup completion message. For example, a new field can be added to the RRC setup completion message to carry the busy indication information. The length of the busy indication information can be 1 bit or multiple bits, and the specific number of bits occupied is determined based on the length of the newly added field.

[0101] In another embodiment of the present invention, the busy indication information may also be transmitted to the network of the second subscriber identity card through a Packet Data Convergence Protocol (PDCP) header of a data packet. The data packet is a data packet for transmitting access layer signaling.

[0102] In the specific implementation, Figure 2 As shown in the figure, the length of the PDCP header is N bytes, and each byte occupies 8 bits. Among them, the first byte includes 4 idle bits R and the PDCP sequence number (PDCP CN). The second byte is the PDCP sequence number (PDCP SN (cont.)), the third byte is the data (Data), and the Oct N-3 to Oct N bytes are the number of bytes occupied by the data.

[0103] The terminal may carry the busy indication information in one or more idle bits R of the PDCP header. Specifically, the length of the busy indication information may be less than 4 bits.

[0104] In another embodiment of the present invention, the busy indication information can also be transmitted to the network of the second subscriber identity card through a media access control address (MAC) header of a data packet. The data packet is a data packet for transmitting access layer signaling.

[0105] In the specific implementation, Figure 3 As shown, the MAC header may include 2 bytes, namely, byte Oct1 and byte Oct2. Byte Oct1 includes 2 idle bits R and a logical channel identifier (LCID). Byte Oct2 includes an extended logical channel identifier (e LCID).

[0106] The terminal may carry busy indication information on one or two idle bits R in the MAC header.

[0107] It should be noted that the data packet transmitting access layer signaling can be a data packet transmitting an RRC connection recovery request message, or a data packet transmitting an RRC connection establishment request message. Of course, it can also be a data packet transmitting other access layer signaling, which is not limited here.

[0108] In a specific implementation, a correspondence between the paging reason information and the signaling for transmitting the corresponding busy indication information can be established in advance. Based on the paging reason information in the paging message, it is selected whether to transmit the busy indication information to the network of the second user identification card through access layer signaling or control plane signaling or user plane signaling in the MO-EDT process. For example, when the paging reason information is voice bearer over long term evolution (VoLTE) or voice bearer under 5G access (VoNR), NAS signaling is used to transmit the busy indication information, so that the terminal user can be informed of the specific unresponsive paging content. For other paging reason information, the busy indication information can be fed back using access layer signaling, without informing the user of the specific unresponsive paging content.

[0109] In a specific implementation, the terminal may send a message of a preamble code in a random access process, carrying the busy indication information, and send it to the base station. The random access process may be a contention-based random access process or a non-contention-based random access process.

[0110] In a specific implementation, the specific content of the busy indication information may be empty data, or special data, such as all-zero or all-one data, which may be pre-agreed upon and is not limited here.

[0111] In one embodiment of the present invention, the signaling for sending the busy indication information may include busy indication information transmission identification information. The busy indication information transmission identification information is used to indicate that the current signaling is used to transmit the busy indication information. When the access network device or the core network control device receives the access layer signaling or the small packet data transmission signaling, based on the busy indication information transmission identification information carried in the signaling, it indicates that the currently received access layer signaling or the small packet data transmission signaling is used to transmit the busy indication information.

[0112] Optionally, the signaling of the busy indication information may only include the busy indication information transmission identification information, but not the busy indication information, or the signaling of the busy indication information does not include valid packet data (for example, empty data, or does not include data). For example, if the network device can learn through the busy indication information transmission identification information in the signaling of the busy indication information that the current signaling or the packet data carried by the current signaling is used to carry the busy indication information, the network device can determine that the terminal feeds back the busy indication information without paying attention to the current signaling or the content of the packet data carried by the current signaling.

[0113] In a specific implementation, a bit value of a bit position may be preset in the signaling for transmitting the busy indication information as the busy indication information transmission identification information.

[0114] For example, in the process of small packet data control plane transmission signaling, the NAS signaling in the RRC data early transmission request message includes the cellular network (Cognitive IoT, Clot) small data container (CIoT small data container) field and the payload container type (Payload container type) field.

[0115] The existing CIoT small data container field occupies the position from the 3rd byte to the 257th byte of the NAS signaling. This field contains the data sent by the terminal to the core network control device. Among them, the bits used to indicate the data type are the 6th to 8th bits of each byte, that is, there are three bits indicating the data type, which are 000, 001 and 010 respectively. When the bit value of the data type is 000, it indicates that the data type is control plane user data (Control plane user data). When the bit value of the data type is 001, it indicates that the data type is a message (SMS). When the bit value of the data type is 010, it indicates that the data type is a local service message (Location services message container). However, when the bit value of the data type is 011 to 111, no data type is defined in the existing protocol.

[0116] In one embodiment of the present invention, the bit value of the data type can be set to any bit value from 011 to 111 as a busy indication information transmission identifier. For example, "011" is used to indicate a "busy indication information transmission identifier". This can tell the core network control device that the currently transmitted packet data is actually busy indication information, not data. At this time, the core network control device does not need to send the data to the data gateway.

[0117] The existing Payload container type field occupies 1 word of NAS signaling. In this field, the bit values ​​of the 1st to 4th bits can indicate a payload container state. Currently, there are only 9 payload container states, which are 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000 and 1111. For other bit values, no container state is defined in the existing protocol, that is, other bit values ​​are all idle.

[0118] In one embodiment of the present invention, any one of the remaining 7 bit values ​​except the above 9 bit values ​​can be used as a busy indication information transmission identifier. For example, we use "1110" to indicate a "busy indication information transmission identifier".

[0119] Reference Figure 4 The embodiment of the present invention further provides another paging method, which is applied to a base station. Specifically, the method may include:

[0120] Step 41: receiving access layer signaling or small packet data user plane transmission signaling.

[0121] In a specific implementation, the access layer signaling may be an RRC connection request message, an RRC connection recovery request message, or an RRC establishment completion message. The busy indication information about the second user identification card is obtained by receiving the access layer signaling, and the busy indication information may be carried in the access layer signaling or in a data packet that transmits the access layer signaling, such as a PDCP header or a MAC header.

[0122] In a specific implementation, the small packet data user plane transmission signaling may be an RRC connection recovery request message. The busy indication information about the second user identification card is obtained through the RRC connection recovery request message, and the busy indication information may be carried in the access layer signaling or in the data packet that transmits the access layer signaling, such as a PDCP header or a MAC header.

[0123] Step 42: When the access layer signaling or the small packet data user plane transmission signaling includes busy indication information, the busy indication information is sent to a core network control device, and the core network control device is the busy indication information processing device.

[0124] In a specific implementation, when the access layer signaling or the small packet data user plane transmission signaling includes busy indication information, the busy indication information is sent to the corresponding core network control device. If the access layer signaling or the small packet data user plane transmission signaling does not include busy indication information, the data carried by the access layer signaling or the small packet data user plane transmission signaling is sent to the corresponding core network data device, and the core network control device is the busy indication information processing device.

[0125] In a specific implementation, the access layer signaling or the small packet data user plane transmission signaling may further include: busy indication information transmission identification information; the busy indication information transmission identification information is used to indicate that the current signaling is used to transmit the busy indication information. The base station may determine whether the access layer signaling or the small packet data user plane transmission signaling is a signaling for transmitting busy indication information based on the busy indication information transmission identification information.

[0126] Reference Figure 5 The embodiment of the present invention further provides another paging method, which may include the following steps:

[0127] Step 51, receiving packet data control plane transmission signaling.

[0128] Step 52: When the packet data control plane transmission signaling includes busy indication information, a paging stop operation is performed.

[0129] In a specific implementation, when the core network control device receives the small packet data control plane transmission signaling sent by the terminal, it can detect the small packet data control plane transmission signaling. If the busy indication information transmission identification information is detected, the paging is stopped, otherwise, it indicates that the current signaling is not used to transmit the busy indication information, so the data carried by the small packet data control plane transmission signaling is sent to the corresponding core network data device.

[0130] In one embodiment of the present invention, the small packet data control plane transmission signaling may further include: busy indication information transmission identification information; the busy indication information transmission identification information is used to indicate that the current signaling is used to transmit the busy indication information. The core network control device may determine whether the small packet data control plane transmission signaling is a signaling for transmitting busy indication information based on the busy indication information transmission identification information.

[0131] Reference Figure 6 The embodiment of the present invention further provides another paging method, which may include the following steps:

[0132] Step 61: Receive signaling sent by the access network device.

[0133] Step 62: When the signaling sent by the access network device includes busy indication information, a paging stop operation is performed.

[0134] In a specific implementation, the core network control device can perform a detection when receiving the signaling sent by the base station. If the detection obtains the busy indication information transmission identification information, the paging is stopped, otherwise, it indicates that the current signaling is not used to transmit the busy indication information, so the data carried by the packet data control plane transmission signaling is sent to the corresponding core network data device.

[0135] In one embodiment of the present invention, the signaling sent by the access network device may further include: busy indication information transmission identification information. The busy indication information transmission identification information is used to indicate that the current signaling is used to transmit the busy indication information. The core network control device may determine whether the packet data control plane transmission signaling is a signaling for transmitting the busy indication information based on the busy indication information transmission identification information.

[0136] Reference Figure 7 In the embodiment of the present invention, the transmission process of the packet data control plane transmission signaling is as follows:

[0137] Step 71: The terminal sends an RRC data early transmission request message to the base station, where the RRC data early transmission request message includes busy indication information and busy indication information transmission identification information.

[0138] In a specific implementation, the busy indication information and the busy indication information transmission identification information are set in NAS signaling in an RRC data early transmission request message.

[0139] Step 72: After receiving the RRC data early transmission request message, the base station forwards the NAS signaling carrying the bearer busy indication information to the core network control device through an initial UE message.

[0140] Step 73: After receiving the busy indication information, the core network control device may consider that the terminal cannot respond to the paging of the second subscriber identity card, and thus stop paging.

[0141] In a specific implementation, when the core network control device receives the small packet data control plane transmission signaling, it can detect the small packet data control plane transmission signaling. If the busy indication information transmission identification information is detected, the paging is stopped, otherwise, it indicates that the current signaling is not used to transmit the busy indication information, so the data carried by the small packet data control plane transmission signaling is sent to the corresponding core network data device.

[0142] In the specific implementation, after receiving the data in the initialization terminal message, the core network control device modifies the bearer between the core network control device and the core network data device (i.e., the gateway) and performs data transmission according to the normal transmission process of the packet data control plane transmission signaling. After the data transmission is completed, the terminal will release the connection between itself and the base station, as well as the bearer between the base station and the core network device.

[0143] Reference Figure 8 In one embodiment of the present invention, the transmission process of the small packet data user plane transmission signaling and the access layer signaling is as follows:

[0144] Step 81, the terminal sends an RRC connection recovery request message or access layer signaling to the base station, the uplink data field in the RRC connection recovery request message includes busy indication information and busy indication information transmission identification information, and the reserved bit in the access layer signaling includes busy indication information and busy indication information transmission identification information.

[0145] Step 82: After receiving the RRC connection recovery request message or access layer signaling, the base station sends a terminal context recovery request (UE Context Resume Request) message to the core network control device.

[0146] In the specific implementation, after receiving the RRC connection recovery request message or access layer signaling, the base station will decode the RRC connection recovery request message or access layer signaling to obtain the content of the uplink data field, and then send the obtained content of the uplink data field to the core network control device through the terminal context recovery request message.

[0147] Step 83: After receiving the busy indication information, the core network control device may consider that the terminal cannot respond to the paging of the second subscriber identity card and will not continue the paging.

[0148] In a specific implementation, when the core network control device receives the terminal context recovery request message, it modifies the bearer between the core network control device and the core network data device (i.e., the gateway) and performs data transmission according to the normal transmission process of the small packet data user plane transmission signaling and the access layer signaling. After the data transmission is completed, the terminal will release the connection between itself and the base station, as well as the bearer between the base station and the core network control device.

[0149] Based on the different networks corresponding to the second user identification card, the core network equipment or access network equipment will also be slightly different. For example, when the second user identification card corresponds to an LTE network, the core network control device is usually a mobility management entity (Mobility Management Entity, MME), the data device of the core network is usually a serving gateway (ServingGateWay, S-GW), and the access network device can be an eNB, or ng-eNB. When the second user identification card corresponds to a 5G network, the core network control device is usually an access and mobility management function (Access and Mobility ManagementFunction, AMF) unit, the data device of the core network is usually a user plane function (User plane function, UPF) unit or a session management function (Session Management Function, SMF) unit, and the access network device can be a gNB. Regardless of the network to which the second user identification card corresponds, it does not constitute a limitation to the present invention and is within the scope of protection of the present invention.

[0150] It can be seen from the above content that the paging method in the embodiment of the present invention transmits the busy indication information to the network of the second user identification card through access layer signaling or packet data transmission signaling. During the entire busy information transmission process, there is no need to additionally establish a wireless resource control connection from the terminal to the base station, nor is there a need to establish a corresponding bearer between the base station and the core network equipment, and there is no need to wait for the core network's response to the busy indication information. The time consumption is greatly shortened, and the performance impact on the first user identification card is also greatly reduced.

[0151] In order to enable those skilled in the art to better understand and implement the present invention, the device corresponding to the above method is described in detail below.

[0152] Reference Fig. 9 The embodiment of the present invention provides a terminal 90, which may include a first user identification card and a second user identification card. Specifically, the terminal 90 includes: a monitoring unit 91 and a feedback unit 92. Among them:

[0153] The monitoring unit 91 is adapted to monitor a paging message about the second user identification card; the second user identification card is any user identification card in the multi-card terminal that is different from the first user identification card;

[0154] The feedback unit 92 is adapted to send access layer signaling to the network of the second subscriber identity card, wherein the access layer signaling includes busy indication information; or send packet data transmission signaling to the network of the second subscriber identity card, wherein the packet data transmission signaling includes busy indication information.

[0155] In an embodiment of the present invention, the signaling of the busy indication information sent by the feedback unit 92 includes busy indication information transmission identification information; the busy indication information transmission identification information is used to indicate that the current signaling is used to transmit the busy indication information.

[0156] In the embodiment of the present invention, the multi-card mobile terminal refers to a computer device that can be used on the move, including but not limited to mobile phones, notebooks, tablet computers, and car computers. In addition, the number of user identification cards is not limited. The multi-card mobile terminal can support both physical user identification cards and non-physical user identification cards. For example, the multi-card mobile terminal can include a virtual user identification card and a physical user identification card, or a virtual user identification card and more than two physical user identification cards, or more than two virtual user identification cards and more than two physical user identification cards. The service based on any user identification card of the multi-card mobile terminal can be processed using the multi-card mobile terminal service processing method in the embodiment of the present invention.

[0157] It should be noted that in the embodiments of the present invention, the user identification card may include user identification cards of various specifications and standards, which are not limited here, as long as the user can be identified based on the information of the user identification card. However, the specific specifications and standards of the user identification card do not constitute a limitation on the present invention, and are all within the scope of protection of the present invention. For example, in terms of the supported network mode, the user identification card can be an ordinary SIM card, or a USIM card, or an eSIM card; in terms of the size of the card, the user identification card can be a standard SIM card with a size of 25mm×15mm, or a small SIM card with a size of 12mmx15mm.

[0158] Regarding each functional unit in the terminal 90, specific implementation may refer to the description of the corresponding steps in the above method, which will not be repeated here.

[0159] Reference Fig.10 The embodiment of the present invention further provides an access network device 100, and the access network device 100 may include a first receiving unit 110 and a first processing unit 120. Wherein:

[0160] The first receiving unit 110 is adapted to determine whether the access layer signaling or the small packet data user plane transmission signaling includes busy indication information when receiving the access layer signaling or the small packet data user plane transmission signaling;

[0161] The first processing unit 120 is suitable for sending the busy indication information to the corresponding core network control device when the access layer signaling or the small packet data user plane transmission signaling includes busy indication information, otherwise sending the data carried by the access layer signaling or the small packet data user plane transmission signaling to the corresponding core network data device.

[0162] It should be noted that in a specific implementation, the access network device 100 can be an LTE base station (eNB) or a 5G base station (gNB or ng-eNB). Of course, it can also be a 2G or 3G base station, etc., which is specifically determined according to the network corresponding to the second user identification card.

[0163] Regarding each functional unit in the access network device 100, specific implementation may be made with reference to the description of the corresponding steps in the above method, which will not be elaborated here.

[0164] Reference Fig.11 The embodiment of the present invention further provides a core network control device 200, and the core network control device 200 may include: a second receiving unit 210 and a second processing unit 220. Among them:

[0165] The second receiving unit 210 is adapted to receive a small packet data control plane transmission signaling;

[0166] The second processing unit 220 is adapted to perform a paging stop operation when the packet data control plane transmission signaling includes busy indication information.

[0167] Reference Fig.12 The embodiment of the present invention further provides another core network control device 300, and the core network control device 300 may include: a third receiving unit 310 and a third processing unit 320. Among them:

[0168] The third receiving unit 310 is adapted to receive signaling sent by the access network device;

[0169] The third processing unit 320 is adapted to perform a paging stop operation when the signaling sent by the access network device includes busy indication information.

[0170] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. The computer program is executed by a processor to implement any of the paging method steps in the above embodiments, which will not be described in detail.

[0171] In a specific implementation, the computer-readable storage medium may include: ROM, RAM, magnetic disk or optical disk, etc.

[0172] An embodiment of the present invention further provides a terminal, which includes a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, any of the paging method steps in the above embodiments is executed, which will not be repeated here.

[0173] An embodiment of the present invention further provides an access network device, wherein the base station includes a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, any one of the paging method steps in the above embodiments is executed, which will not be repeated here.

[0174] An embodiment of the present invention further provides a core network control device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, the paging method steps of any one of the above embodiments are executed, which will not be repeated here.

[0175] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A paging method, applied to a multi-card terminal, wherein the multi-card terminal comprises a first user identification card and a second user identification card; characterized in that: include: monitoring a paging message about the second user identification card; The second user identification card is any user identification card in the multi-card terminal that is different from the first user identification card; Sending a small packet data transmission signaling to the network of the second subscriber identity card, wherein the small packet data transmission signaling includes busy indication information.

2. The method according to claim 1, characterized in that The signaling for sending the busy indication information includes busy indication information transmission identification information, which is used to indicate that the current signaling is used to transmit the busy indication information.

3. The method according to claim 1 or 2, characterized in that The packet data transmission signaling includes: packet data control plane transmission signaling; Sending small packet data transmission signaling to the network of the second user identification card includes: sending the small packet data control plane transmission signaling to a core network control device corresponding to the second user identification card.

4. The method according to claim 1 or 2, characterized in that: The small packet data transmission signaling includes: small packet data user plane transmission signaling; Sending small packet data transmission signaling to the network of the second user identification card includes: sending small packet data user plane transmission signaling to an access network device corresponding to the second user identification card.

5. The paging method according to claim 1, characterized in that: Based on the paging reason information in the paging message, select to send packet data transmission signaling to the network of the second subscriber identity card.

6. A paging method, characterized in that: include: Receive small packet data user plane transmission signaling; When the small packet data user plane transmission signaling includes busy indication information, the busy indication information is sent to a core network control device, and the core network control device is the busy indication information processing device.

7. The paging method according to claim 6, characterized in that: The small packet data user plane transmission signaling further includes: busy indication information transmission identification information, which is used to indicate that the current signaling is used to transmit the busy indication information.

8. The paging method according to claim 6 or 7, characterized in that: Sending the busy indication information to the core network control device also includes sending busy indication information transmission identification information to the core network control device; the busy indication information transmission identification information is used to indicate that current signaling is used to transmit the busy indication information.

9. A paging method, characterized in that: include: Receive small packet data control plane transmission signaling; When the packet data control plane transmission signaling includes busy indication information, a paging stop operation is performed.

10. The paging method according to claim 9, characterized in that: The packet data control plane transmission signaling also includes: busy indication information transmission identification information, which is used to indicate that the current signaling is used to transmit the busy indication information.

11. A terminal, comprising a first user identification card and a second user identification card, characterized in that: include: A monitoring unit, adapted to monitor a paging message about the second user identification card; The second user identification card is any user identification card in the terminal that is different from the first user identification card; The feedback unit is adapted to send a small packet data transmission signaling to the network of the second user identification card, wherein the small packet data transmission signaling includes busy indication information.

12. The terminal according to claim 11, characterized in that The signaling for sending the busy indication information by the feedback unit includes: busy indication information transmission identification information, which is used to indicate that the current signaling is used to transmit the busy indication information.

13. An access network device, characterized in that: include: A first receiving unit, adapted to receive and transmit signaling of a small packet data user plane; The first processing unit is adapted to send the busy indication information to a core network control device when the small packet data user plane transmission signaling includes the busy indication information, and the core network control device is the busy indication information processing device.

14. A core network control device, characterized in that: include: A second receiving unit, adapted to receive a packet data control plane transmission signaling; The second processing unit is adapted to perform a paging stop operation when the packet data control plane transmission signaling includes busy indication information.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program is executed by a processor to implement the steps of the method according to any one of claims 1 to 10.

16. A terminal comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to any one of claims 1 to 5 are performed.

17. An access network device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to any one of claims 6 to 8 are performed.

18. A core network control device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to any one of claims 9 to 10 are performed.

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