Wireless communication method, device, equipment and system

Abstract

Provided are a wireless communication method and device, relating to the technical field of wireless communications, comprising: a terminal receiving a first indication message sent by an access network device, the first indication message comprising registration rejection information and / or identification information of a first core network device selected by the access network device, the registration rejection information is used for indicating a rejected network slice identifier; and executing the first operation based on the first indication message. According to the method provided by the invention, the indication information is added in the indication message sent by the access network equipment to the terminal, so that the problem of mistakenly prohibiting TAI caused by mistakenly storing and rejecting the slice information in the process of executing network registration by the terminal is avoided, and furthermore, the indication content is added for the terminal to initiate network registration again, so that the network registration efficiency is improved. The occurrence probability of abnormal registration is avoided, and the user experience is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of LTE / NR wireless communication, and particularly to a wireless communication method, apparatus, device, and system. Background Art

[0002] In a 5G network, the service area covered by a provider is divided into many small geographical areas called cells. The data transmission rate of the 5G network is much higher than that of the current cellular network, and it has a lower network latency. Currently, after a terminal switches to a 5G shared cell, when the PLMN (Public Land Mobile Network) selected by the terminal to camp on is inconsistent with the network-selected PLMN, the terminal initiates registration with incorrect slice information, resulting in the network erroneously sending a registration rejection message, thereby causing the registration request of the terminal to be rejected. Furthermore, the terminal will incorrectly store the rejected slice information and perform an operation to prohibit the current TAI (Tracking Area Identity), reducing the user's network service experience. Summary of the Invention

[0003] The present disclosure provides a wireless communication method, apparatus, device, and system. By adding indication information to the message sent by the access network device or the core network device to the terminal, it is avoided that the terminal incorrectly stores the rejected slice information and performs operations such as prohibiting the current TAI during network registration, and further, the probability of registration failure of the terminal in the subsequent network registration process is avoided.

[0004] A first aspect embodiment of the present disclosure provides a wireless communication method, which includes: the terminal receives a first indication message sent by the access network device, the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected; based on the first indication message, perform a first operation.

[0005] In some embodiments of the present disclosure, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of a second core network device requested by the terminal to register; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating network registration to the first core network device; initiating network registration to the second core network device.

[0006] In some embodiments of the present disclosure, the first indication message includes identification information of a first core network device selected by an access network device. Based on the first indication message, performing a first operation includes: based on the identification information of the first core network device, sending a first registration message to the access network device, so that the access network device sends the first registration message to the first core network device. The first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device.

[0007] In some embodiments of the present disclosure, before receiving the first indication message sent by the access network device, the method further includes: sending a second registration message to the access network device. The second registration message includes a second network slice identifier, and the second network slice identifier is any one of the network slice identifiers assigned by the access network device to a second core network device. The second core network device is the core network device selected by the terminal, and the second core network device and the first core network device are under the same shared cell.

[0008] In some embodiments of the present disclosure, the terminal is in a connected state, and the first indication message includes registration rejection information. Based on the first indication message, performing a first operation includes: ignoring the second network slice identifier carried in the first indication message; transitioning from the connected state to the idle state, and sending a third registration message to the access network device. The third registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; establishing a connection with the access network device, and sending a second indication message. The second indication message includes the identification information of the first core network device, and the second indication message is used to instruct the access network device to send the third registration message to the first core network device.

[0009] In some embodiments of the present disclosure, the terminal is in a connected state, and the first indication message includes registration rejection information and the identification information of a first core network device selected by the access network device. Based on the first indication message, performing a first operation includes: transitioning from the connected state to the idle state, and sending a fourth registration message to the access network device. The fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device or the second core network device; establishing a connection with the access network device, and sending a second indication message. The second indication message includes the identification information of the first core network device or the identification information of the second core network device, and the second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

[0010] A second aspect embodiment of the present disclosure provides a wireless communication method, including: an access network device sends a first indication message to a terminal, the first indication message is used to assist the terminal in performing a first operation, the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected.

[0011] In some embodiments of the present disclosure, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of a second core network device that the terminal requests to register with; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating network registration to the first core network device; initiating network registration to the second core network device.

[0012] In some embodiments of the present disclosure, the first indication message includes identification information of a first core network device selected by the access network device, and the method further includes: receiving a first registration message sent by the terminal in the connected state, the first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; sending the first registration message to the first core network device.

[0013] In some embodiments of the present disclosure, before sending the first indication message to the terminal, the method further includes: receiving a second registration message sent by the terminal, the second registration message includes a second network slice identifier, and the second network slice identifier is any one of the network slice identifiers assigned by the access network device to a second core network device, the second core network device is the core network device selected by the terminal, and the second core network device and the first core network device are under the same shared cell; sending the second registration message to the first core network device.

[0014] In some embodiments of the present disclosure, the first indication message includes registration rejection information, and the method further includes: receiving a third registration message sent by the terminal in the idle state, the third registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; establishing a connection with the terminal and receiving a second indication message sent by the terminal, the second indication message includes identification information of the first core network device, and the second indication message is used to instruct the access network device to send the third registration message to the first core network device.

[0015] In some embodiments of the present disclosure, the first indication message includes registration rejection information and identification information of a first core network device selected by an access network device. The method further includes: receiving a fourth registration message sent by a terminal in an idle state, where the fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device or the second core network device; establishing a connection with the terminal, and receiving a second indication message sent by the terminal, where the second indication message includes the identification information of the first core network device or the identification information of the second core network device, and the second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

[0016] An embodiment of the third aspect of the present disclosure provides a wireless communication method, including: a first core network device sending a first indication message to an access network device, where the first indication message includes registration rejection information and identification information of the first core network device, and the registration rejection information is used to indicate a network slice identifier that is rejected, and the first indication message is used for the access network device to forward to a terminal and assist the terminal in performing a first operation.

[0017] In some embodiments of the present disclosure, the first operation includes at least one of the following: not storing the registration rejection information in a rejection list of a second core network device requested by the terminal for registration; storing the registration rejection information in a rejection list of the first core network device; ignoring the registration rejection information; initiating a network registration to the first core network device; initiating a network registration to the second core network device.

[0018] An embodiment of the fourth aspect of the present disclosure provides a wireless communication device, including: a transceiver module, configured to receive, by a terminal, a first indication message sent by an access network device, where the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate a network slice identifier that is rejected; and a processing module, configured to perform a first operation based on the first indication message.

[0019] An embodiment of the fifth aspect of the present disclosure provides a wireless communication device, including: a transceiver module, configured to send, by an access network device, a first indication message to a terminal, where the first indication message is used to assist the terminal in performing a first operation, the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate a network slice identifier that is rejected.

[0020] A sixth aspect embodiment of the present disclosure provides a wireless communication device, including: a transceiver module, configured to send a first indication message from a first core network device to an access network device, the first indication message including registration rejection information and identification information of the first core network device, the registration rejection information being used to indicate the network slice identifier that is rejected, and the first indication message being used for the access network device to forward to a terminal and assist the terminal in performing a first operation.

[0021] A seventh aspect embodiment of the present disclosure provides a communication system, including a terminal, an access network device, and a core network device, wherein the terminal is configured to execute the method described in any one of the embodiments of the first aspect of the present disclosure, the access network device is configured to execute the method described in any one of the embodiments of the second aspect of the present disclosure, and the core network device is configured to execute the method described in any one of the embodiments of the third aspect of the present disclosure.

[0022] In some embodiments of the present disclosure, the core network device includes a first core network device and a second core network device, and the first core network device and the second core network device are under the same shared cell.

[0023] An eighth aspect embodiment of the present disclosure provides a communication device, including a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, configured to control the wireless signal transceiver of the transceiver by executing computer-executable instructions on the memory, and capable of implementing the method described in any one of the embodiments of the first aspect or the second aspect or the third aspect of the present disclosure.

[0024] A ninth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in any one of the embodiments of the first aspect or the second aspect or the third aspect of the present disclosure can be implemented.

[0025] Another aspect of the present disclosure provides a chip, including: a memory and a processor, the processor being configured to implement the method described in any one of the first aspect or the second aspect or the third aspect of the present disclosure by executing computer-executable instructions on the memory.

[0026] In summary, the wireless communication method, apparatus, device, and system proposed in this disclosure include: a terminal receives a first indication message sent by an access network device, where the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected; based on the first indication message, a first operation is performed. In the method provided in this disclosure, the access network device adds indication information to the indication message for the terminal to perform corresponding operations based on the rejected network slice identifier and / or the identification information of the first core network device, avoiding the problem that the terminal incorrectly stores the rejection slice information and causes incorrect prohibition of the TAI. Further, by adding indication content, it is used for the terminal to initiate network registration again, avoiding the occurrence probability of registration anomalies and improving the user experience.

[0027] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit this disclosure. Brief Description of the Drawings

[0028] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this disclosure, and are used together with the specification to explain the principles of this disclosure, and do not constitute an improper limitation of this disclosure.

[0029] Figure 1A It is a schematic diagram of an exemplary network environment for this disclosure;

[0030] Figure 1B It is a schematic diagram of the architecture of a wireless communication system proposed in an embodiment of this disclosure;

[0031] Figure 2 It is an interaction schematic diagram of a wireless communication method proposed in an embodiment of this disclosure;

[0032] Figure 3 It is a flowchart of a method for performing a first operation proposed in an embodiment of this disclosure;

[0033] Figure 4 It is a flowchart of a wireless communication method proposed in an embodiment of this disclosure;

[0034] Figure 5 It is a flowchart of a method for performing a first operation proposed in an embodiment of this disclosure;

[0035] Figure 6 It is a flowchart of a method for performing a first operation proposed in an embodiment of this disclosure;

[0036] Figure 7 It is a flowchart of a wireless communication method proposed in an embodiment of this disclosure;

[0037] Figure 8Method flowchart of a wireless communication method applied to an access network device proposed by an embodiment of the present disclosure;

[0038] Figure 9 Method flowchart of a wireless communication method applied to an access network device proposed by an embodiment of the present disclosure;

[0039] Figure 10 Method flowchart of a wireless communication method applied to an access network device proposed by an embodiment of the present disclosure;

[0040] Figure 11 Method flowchart of a wireless communication method applied to an access network device proposed by an embodiment of the present disclosure;

[0041] Figure 12 Method flowchart of a wireless communication method applied to a first core network device proposed by an embodiment of the present disclosure;

[0042] Figure 13A Interaction schematic diagram of Solution 1 of the wireless communication method provided by the present disclosure;

[0043] Figure 13B Interaction schematic diagram of Solution 2 of the wireless communication method provided by the present disclosure;

[0044] Figure 13C Interaction schematic diagram of Solution 3 of the wireless communication method provided by the present disclosure;

[0045] Figure 14 Structural schematic diagram of a wireless communication device proposed by an embodiment of the present disclosure;

[0046] Figure 15 Structural schematic diagram of a wireless communication device proposed by an embodiment of the present disclosure;

[0047] Figure 16 Structural schematic diagram of a wireless communication device proposed by an embodiment of the present disclosure;

[0048] Figure 17 Structural schematic diagram of an electronic device provided by an embodiment of the present disclosure. Detailed implementation manners

[0049] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and should not be construed as a limitation to the present disclosure.

[0050] The following are the explanations of professional terms in the embodiments of the present disclosure:

[0051] 1. PLMN: Public Land Mobile Network, which is a public land mobile network. Each operator corresponds to a PLMN, and each PLMN has a corresponding identifier, which is broadcast as system information by the base station so that terminals under the base station can receive it.

[0052] 2. Network slice: It refers to a network architecture in which multiple end-to-end logical networks operate on a shared physical network infrastructure. Each network slice can be configured to provide a set of specific capabilities and / or features. The characteristics of a network slice can lie in the type of use case, the type of application and / or service, or the entity providing the application and / or service via the network slice.

[0053] 3. NSSAI: Network Slice Selection Assistance Information, which is a key cell in the 5G network used to distinguish different types and purposes of network slices. It mainly indicates the base station and core network elements to route it to the correct slice elements when the user initially accesses the network. It includes slice type, service type, and data network name DNN, etc. NSSAI consists of one or more S-NSSAIs (Single Network Slice Selection Assistance Information), and each S-NSSAI is composed of a slice / service type (SST) and a slice differentiator (SD), which are used to uniquely identify a network slice.

[0054] 4. TAI: Tracking Area Identity, which is an identifier used to uniquely identify a tracking area. In the LTE network, each tracking area has a unique TAI, which consists of two parts: PLMN Identity (Public Land Mobile Network Identity) and TAC (Tracking Area Code).

[0055] Such as Figure 1A As shown in the schematic diagram of the exemplary network environment of the present disclosure, when receiving an indication to perform wireless transmission using the cellular circuit, the wifi connection is stopped, and when receiving an indication to stop performing wireless transmission using the cellular circuit, the wifi connection is restored. The network environment 100A includes electronic devices 101A, 102A, a wifi access point 103A, a cellular base station 104A, and a network 105A.

[0056] In a 5G shared cell, multiple operators share resources of the radio network and the core network through sharing. In a 5G shared cell, a user can select a network to register with. The network can decide whether to allow the user to register based on information such as the user's subscribed NSSAI (SubscribeNSSAI) and the NSSAI supported by the network configuration. After successful registration, the user can perform wireless communication under the wireless network they have selected.

[0057] Therefore, to solve the problem that when switching to a 5G shared cell, if the PLMN selected by the terminal and the network is inconsistent, the terminal initiates registration using incorrect slice information, resulting in the network erroneously sending a registration rejection, and thus causing the terminal to incorrectly store the rejected slice information and erroneously prohibit the TAI, etc., in order to improve the user experience.

[0058] The wireless communication method provided by the present application will be introduced in detail below with reference to the accompanying drawings.

[0059] Figure 1B It is a schematic diagram of the architecture of the wireless communication system proposed in an embodiment of the present disclosure. As Figure 1B shown, the communication system 100B may include a terminal 101B, an access network device 102B, a first core network device 103B, and a second core network device 104B. Among them, the first core network device 103B corresponds to PLMN1, the second core network device 104B corresponds to PLMN2, the slice identifiers supported by PLMN1 are the NSSAI1 set, and the slice identifiers supported by PLMN2 are the NSSAI2 set.

[0060] The first core network device and the second core network device are in the same 5G shared cell. The cell can refer to a logical communication entity used to communicate with the base station. Multiple core networks can be supported to communicate with the base station within the 5G shared cell. The terminal can select to connect to any one of the core networks within the 5G shared cell to meet the requirement of communicating through the wireless network. The core network can provide user authentication, access authorization, tracking, Internet Protocol (IP) connection, and other access, routing, or mobility functions.

[0061] Figure 2 It is an interaction schematic diagram of a wireless communication method proposed in an embodiment of the present disclosure. As Figure 2 shown, the method includes the following steps.

[0062] Step 201, receive a first indication message sent by the access network device.

[0063] In some embodiments, this solution can be executed by the terminal.

[0064] In some embodiments, the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that has been rejected.

[0065] In some embodiments, the terminal is in a connected state.

[0066] In some embodiments, the network slice identifier is, for example, NSSAI.

[0067] In some embodiments, the terminal may receive a first indication message sent by the access network device in response to a network handover. The network handover may be that the terminal switches from other cells to a shared cell, the terminal needs to camp on the shared cell, the terminal searches for the network and performs network selection operations, and performs network registration according to the selected network; the network device also performs network selection operations to determine the network currently available for the terminal to perform wireless communication. The core network selected by the terminal may be inconsistent with the core network selected by the network, or may be consistent. When the selected core networks are consistent, the terminal can successfully register and perform wireless communication. When the selected core networks of the two are inconsistent, the terminal cannot successfully register, which may lead to problems such as incorrect storage of rejection slice messages and incorrect prohibition of TAI.

[0068] In some embodiments, after the terminal switches to a 5G shared cell, the first indication message received from the access network device may include registration rejection information, that is, the access network device sends the registration rejection information sent by the core network to the terminal through a downlink direct transfer message to inform the terminal that the network it selected rejects its access.

[0069] In some embodiments, after the terminal switches to a 5G shared cell, the first indication message received from the access network device may be the identification information of the first core network device selected by the access network device, to inform the terminal of the core network selected by the network, and the terminal performs network registration according to the first indication message.

[0070] In some embodiments, after the terminal switches to a 5G shared cell, the first indication message received from the access network device may be the registration rejection information sent by the access network device through a downlink direct transfer message and the identification information of the first core network device selected by the access network device, so that the terminal performs a first operation based on the first indication message. The downlink direct transfer indicates that the first indication message may be sent by the core network device, and the access network device forwards the first indication message to the terminal.

[0071] Step 202, perform a first operation based on the first indication message.

[0072] In some embodiments, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of the second core network device to which the terminal requests registration; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating network registration to the first core network device; initiating network registration to the second core network device.

[0073] In some embodiments, based on the first indication message, the terminal performs the first operation, which may be that the terminal sends a registration message to the access network device based on a registration rejection message. In the registration rejection information received by the terminal, the network slice identifier for which the terminal is rejected is indicated. The terminal may ignore the rejected network slice identifier to avoid erroneously storing rejection slice information, which may cause incorrect prohibition of the TAI. The terminal may carry the network slice identifier under the same core network again in the sent registration message, or may carry the network slice identifier under another core network to complete the registration application for network registration.

[0074] In some embodiments, based on the first indication message, the terminal performs the first operation, which may be that the terminal sends a registration message to the access network device based on the identification information of the first core network device selected by the access network device. The registration message may carry the network slice identifier permitted by the first core network device, or may carry the network slice identifier permitted by the core network device selected by the terminal to complete the registration application for network registration.

[0075] In some embodiments, based on the first indication message, the terminal performs the first operation, which may be that the terminal ignores the network slice identifier of the rejected slice carried in the registration rejection message based on the registration rejection information and the identification information of the first core network device selected by the access network device, to avoid erroneously storing the rejection slice message, and sends a registration message to the access network device. The registration message may carry the network slice identifier permitted by the first core network device to complete the application for network registration. The access network device sends the registration message to the first core network device to achieve successful network registration.

[0076] In some embodiments, based on the first indication message, the terminal performs the first operation, which may be not storing the registration rejection information in the rejection list of the second core network device to which the terminal requests registration and initiating network registration again, where the terminal may initiate network registration to the first core network device or may initiate network registration to the second core network device.

[0077] In some embodiments, based on the first indication message, the terminal performs the first operation, which may be ignoring the registration rejection information, storing the second network slice identifier in the rejection list of the first core network device, and initiating the network registration process again. The terminal may initiate network registration to the first core network device or may initiate network registration to the second core network device.

[0078] In the above embodiments, the terminal performs network handover in the connected state. By means of indication messages sent by the access network device at different stages, or by adding the identifier of the core network device selected for network selection in the indication message sent by the access network device, the terminal can perform corresponding operations based on the indication message. The terminal can ignore the rejected network slice identifier to avoid misstoring the rejected slice information. The terminal can also perform network registration and carry the network slice identifier permitted by the network during the registration process to achieve successful registration.

[0079] Figure 3 This is a flowchart of the method for performing the first operation proposed in the embodiments of the present disclosure. Based on Figure 2 the embodiments shown, the first indication message includes the identifier information of the first core network device selected by the access network device. Figure 3 For Figure 2 a further description of step 202 in Figure 3 it is shown that the following steps are included:

[0080] Step 301: Based on the identifier information of the first core network device, send a first registration message to the access network device, so that the access network device sends the first registration message to the first core network device.

[0081] In some embodiments, the first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers allocated by the access network device for the first core network device.

[0082] In some embodiments, the identifier information of the first core network device is, for example, PLMN1, and the first network slice identifier is, for example, NSSAI1.

[0083] In some embodiments, before sending the first registration message to the access network device, the terminal receives a first indication message, and the first indication message includes the identifier information of the first core network device selected by the access network device.

[0084] Exemplarily, when the network switches to a 5G shared cell, it indicates the currently selected PLMN1 of the terminal. Through a new indication in the handover message, the handover message is used to notify the terminal to start the handover process and newly indicates the selected PLMN1.

[0085] In some embodiments, the access network device may broadcast the first indication message to notify the terminal of the identifier of the core network device selected by the network.

[0086] In some embodiments, based on the first indication message, the terminal sends a first registration message to the access network device, and the first registration message contains the first network slice identifier allocated on the first core network device, so that the access network device can send the first registration message to the first core network device indicated in the first indication message.

[0087] In the above embodiments, the terminal may send a registration message to the core network device selected by the network according to the indication of the access network device, so as to carry the network slice identifier allowed by the core network device in the registration message, and achieve successful network registration.

[0088] Figure 4 This is a flowchart of the wireless communication method proposed in the embodiments of the present disclosure. Based on Figure 2 、 Figure 3 the embodiments shown, before step 201 in Figure 2 as shown in Figure 4 the method further includes the following steps:

[0089] Step 401, send a second registration message to the access network device.

[0090] In some embodiments, the second registration message includes a second network slice identifier, and the second network slice identifier is any one of the network slice identifiers assigned by the access network device to the second core network device. The second core network device is the core network device selected by the terminal, and the second core network device and the first core network device are under the same shared cell.

[0091] In some embodiments, the second network slice identifier is, for example, NSSAI2, and the identification information of the second core network is, for example, PLMN2.

[0092] In some embodiments, the second network slice identifier included in the second registration message corresponds to the second core network. The second core network is the core network determined by the terminal through network selection operation. The second core network is different from the first core network selected by the network, but they are different core network networks under the same shared cell.

[0093] In some embodiments, the terminal sends a second registration message to the access network device, and the access network device sends the second registration message to the first core network device selected by the network. However, since the first core network device does not allow the network slice identifier corresponding to the second core network device, after the terminal sends the second registration message for registration application, the terminal receives the rejection registration information sent by the access network device through the downlink direct transfer message. The first core network device informs the terminal to reject the terminal's registration application and carries the second network slice identifier.

[0094] In the above embodiments, the terminal performs the first network registration in the connected state. However, since the core network selected by the terminal is inconsistent with the core network selected by the network, the terminal receives a registration rejection message. The network slice identifier carried in the registration rejection message should be stored in the rejection slice information of the first core network. Through Figure 2 steps 201 and 202 in

[0095] Figure 5 This is a flowchart of a method for performing a first operation proposed in an embodiment of the present disclosure. Based on Figure 2 、 Figure 4 the embodiments shown, Figure 2 step 202 in Figure 5 is further introduced. As shown in

[0096] Step 501, ignore the second network slice identifier carried in the first indication message.

[0097] In some embodiments, after the terminal sends a second registration message, it receives a first indication message sent by the access network device through a downlink direct transfer message. The first indication message includes rejection registration information, and the rejection registration information carries a second network slice identifier. The terminal ignores the second network slice identifier in the rejection registration information, that is, the terminal does not store the second network slice identifier in the second core network device rejection list. In other words, this second network slice identifier should be stored in the first core network device rejection list. The terminal ignores this rejection registration information, avoiding storing incorrect rejected slice information, and thus also avoiding the problem of incorrectly prohibiting the TAI.

[0098] Exemplarily, after the terminal switches to a 5G shared network and initiates a registration request, it receives a network registration rejection message carrying a #62 cause value, and the terminal ignores this registration rejection message.

[0099] Step 502, transition from the connected state to the idle state, and send a third registration message to the access network device.

[0100] In some embodiments, the third registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device.

[0101] In some embodiments, after the terminal receives the rejection registration information, it transitions from the connected state to the idle state to release the link and re-reside, and then initiates the process of network registration again.

[0102] Exemplarily, after the terminal receives a network registration rejection message, it ignores this registration rejection message, releases the link and re-resides, and then re-initiates the registration process.

[0103] In some embodiments, the terminal sends a third registration message to the access network device, and the third registration message still carries the network slice identifier corresponding to the core network selected by the terminal.

[0104] Step 503, establish a connection with the access network device and send a second indication message.

[0105] In some embodiments, the second indication message includes the identification information of the first core network device, and the second indication message is used to instruct the access network device to send a third registration message to the first core network device.

[0106] In some embodiments, establishing a connection with the access network device may be to initiate a link establishment process. The terminal and the access network device initiate a link establishment process. After the link establishment is completed, the terminal sends a link establishment completion message to the access network device to indicate the identification of the core network device selected by the terminal in the link establishment completion message. The second indication message may be the link establishment completion message.

[0107] In some embodiments, the second indication message may be carried by RRC signaling.

[0108] In some embodiments, the second indication message sent by the terminal to the access network device includes the identification information of the first core network device selected by the terminal, to instruct the access network device to send a third registration message to the first core network device selected by the terminal.

[0109] In the above embodiments, after the terminal receives the registration rejection message for the first registration, it converts the connection state to the idle state to re-initiate residence, and informs the access network device of the core network device selected by the terminal in the link establishment process, to instruct the access network device to send the second registration message to the core network device selected by the terminal, so as to achieve successful registration.

[0110] Figure 6 Flowchart of the method for performing the first operation proposed in the embodiments of the present disclosure. Based on Figure 2 、 Figure 4 The embodiments shown, Figure 6 For Figure 2 Step 202 in is further described. As Figure 6 Shown, it includes the following steps:

[0111] Step 601, convert from the connected state to the idle state, and send a fourth registration message to the access network device.

[0112] In some embodiments, the access network device adds an indication of the identification of the core network device selected by the network in the first indication message. In other words, when the access network device sends a downlink direct transfer message to the terminal, it not only sends the registration rejection information to the terminal, but also informs the terminal of the PLMN selected by the network, for the terminal to perform adaptation operations according to the PLMN selected by the network.

[0113] In some embodiments, after the terminal receives the registration rejection information and the identification information of the first core network device, it may ignore the second network slice identifier indicated in the registration rejection information, to avoid wrongly storing the second network slice identifier in the rejection slice information of the second core network device.

[0114] In some embodiments, after receiving the registration rejection information and the identification information of the first core network device, the terminal may store the second network slice identifier indicated in the registration rejection information into the rejection slice information of the first core network device.

[0115] In the above embodiments, by adding a PLMN indicating network selection to the indication message of the access network device, the terminal stores the rejected slice identifier into the rejection slice information corresponding to the core network device selected for network selection, avoiding the problem of erroneously storing it into the rejection slice information corresponding to the core network device selected by the terminal and causing incorrect prohibition of the TAI.

[0116] In some embodiments, the fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers allocated by the access network device to the first core network device or the second core network device.

[0117] In some embodiments, after receiving the registration rejection information and the identification information of the first core network device, the terminal transitions from the connected state to the idle state to release the link and re-reside, and initiates the process of network registration again.

[0118] Exemplarily, after receiving the network registration rejection message and the PLMN selected for network selection, the terminal identifies whether the PLMN selected by the terminal when initiating the registration process is inconsistent with the PLMN selected for network selection. If inconsistent, it releases and re-resides to initiate the registration process.

[0119] In some embodiments, the terminal sends a fourth registration message to the access network device, and the fourth network slice identifier carried in the fourth registration message may be the network slice identifier allowed by the first core network device or the network slice identifier allowed by the second core network device.

[0120] Exemplarily, after receiving the network registration rejection information and the PLMN selected for network selection, if it is inconsistent with the PLMN selected by the terminal, the terminal releases and re-resides to initiate registration again. The terminal may select PLMN1 to initiate registration or select PLMN2 to initiate registration again.

[0121] Step 602: Establish a connection with the access network device and send a second indication message.

[0122] In some embodiments, the second indication message includes the identification information of the first core network device or the identification information of the second core network device, and the second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

[0123] In some embodiments, for the terminal to establish a connection with the access network device, it may initiate a link establishment process. The terminal and the access network device initiate the link establishment process. After the link establishment is completed, the terminal sends a link establishment completion message to the access network device to indicate, in the link establishment completion message, the identifier of the core network device selected by the terminal. The second indication message may be the link establishment completion message.

[0124] In some embodiments, the second indication message may be carried by RRC signaling.

[0125] In some embodiments, the second indication message sent by the terminal to the access network device includes the identifier information of the core network device corresponding to the network slice identifier carried in the fourth registration message, so as to instruct the access network device to send the fourth registration message to the corresponding core network device.

[0126] In some embodiments, if the fourth network slice identifier carried in the fourth registration message sent by the terminal is the network slice identifier allocated by the access network device for the first core network device, the link establishment completion message includes the identifier information of the first core network device, so as to instruct the access network device to send the fourth registration message to the first core network device, thereby completing the network registration of the terminal to the first core network device.

[0127] In some embodiments, if the fourth network slice identifier carried in the fourth registration message sent by the terminal is the network slice identifier allocated by the access network device for the second core network device, the link establishment completion message includes the identifier information of the second core network device, so as to instruct the access network device to send the fourth registration message to the second core network device, thereby completing the network registration of the terminal to the second core network device.

[0128] In the above embodiments, after the terminal receives the registration rejection information for the first registration and the identifier information of the first core network device selected for network selection, by converting the connection state to the idle state to re-initiate a residence, sending a registration request to the network again, and informing the access network device of the core network selected by the terminal during the link establishment process, so that the access network device sends the second registration message to the core network device selected by the terminal, successful registration is achieved.

[0129] In summary, when the network of a terminal in the connected state undergoes a handover, the terminal receives a first indication message sent by the access network device. The first indication message includes registration rejection information and / or the identifier information of the first core network device selected by the access network device. The registration rejection information is used to indicate the network slice identifier that is rejected; based on the first indication message, the terminal performs a first operation. By adding an indication message to the message sent by the access network device, the terminal can be selected to ignore the network slice identifier in the registration rejection information, avoiding the problem of erroneously storing the rejected slice information and causing incorrect prohibition of the TAI. Further, the terminal can perform network registration again to reduce the situation of abnormal registration and improve the user experience.

[0130] Figure 7 This is a flowchart showing the wireless communication method applied to an access network device proposed by the present disclosure. As Figure 7 shown, the method includes the following steps:

[0131] Step 701: Send a first indication message to the terminal.

[0132] In some embodiments, the first indication message is used to assist the terminal in performing a first operation. The first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device. The registration rejection information is used to indicate the network slice identifier that is rejected.

[0133] In some embodiments, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of a second core network device requested by the terminal for registration; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating network registration to the first core network device; initiating network registration to the second core network device.

[0134] In some embodiments, the access network device sending the first indication message to the terminal may include the identification information of the first core network device. In other words, when the network switches and the terminal is in the connected state, the access network device may send an indication message to the terminal to inform that the current network has switched to the first core network device, so that the terminal can perform the first operation based on the first indication message. The implementation process of the terminal performing the first operation can refer to Figure 3 the implementation manner in the embodiments shown.

[0135] In some embodiments, the access network device sending the first indication message to the terminal may include registration rejection information. In other words, when the terminal sends a registration request for a second core network device to the access network device while in the connected state, the access network device may send the registration rejection message of the first core network device to the terminal through a downlink direct transfer message, so that the terminal can perform the first operation based on the first indication message. The implementation process of the terminal performing the first operation can refer to Figure 5 the implementation manner in the embodiments shown.

[0136] In some embodiments, the access network device sending the first indication message to the terminal may include registration rejection information and the identification information of the first core network device. In other words, when the terminal sends a registration request for a second core network device to the access network device while in the connected state, the access network device may send the registration rejection message of the first core network device to the terminal through a downlink direct transfer message and inform the terminal of the identification of the first core network device selected by the current network, so that the terminal can perform the first operation based on the first indication message. The implementation process of the terminal performing the first operation can refer to Figure 6Implementation in the illustrated embodiment.

[0137] Figure 8 The flowchart of the wireless communication method applied to an access network device proposed in an embodiment of the present disclosure is based on Figure 7 the illustrated embodiment, as Figure 8 shown, and includes the following steps:

[0138] Step 801: Receive a first registration message sent by a terminal in a connected state.

[0139] In some embodiments, the first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers allocated by the access network device for the first core network device.

[0140] In some embodiments, the identification information of the first core network device is included in the first indication message sent by the access network device to the terminal, so that the terminal carries the network slice identifier allowed by the first core network device in the first registration message.

[0141] Step 802: Send the first registration message to the first core network device.

[0142] In some embodiments, after the network switches, the access network device informs the terminal of the identification information of the core network device selected by the current network. After the terminal sends a registration message to the access network device, the access network device directly sends the registration message to the core network device selected by the current network, thereby completing network registration.

[0143] In some embodiments, the optional implementation manners of step 801 and step 802 can refer to Figure 3 the optional implementation manners of the illustrated embodiment, which will not be elaborated here.

[0144] In the above embodiments, when the network switches, the access network device can inform the terminal of the identification information of the core network device allowed to access currently, so that the terminal initiates network registration to the corresponding core network device according to the identification information of the core network device allowed to access, realizes successful registration, and improves the user experience.

[0145] Figure 9 The flowchart of the method of the wireless communication method applied to an access network device proposed in an embodiment of the present disclosure is based on Figure 7 the illustrated embodiment, as Figure 9 shown, before sending the first indication message, it includes the following steps:

[0146] Step 901: Receive a second registration message sent by a terminal.

[0147] In some embodiments, the second registration message includes a second network slice identifier, where the second network slice identifier is any one of the network slice identifiers assigned by the access network device to the second core network device, the second core network device is the core network device selected for the terminal, and the second core network device and the first core network device are under the same shared cell.

[0148] In some embodiments, when the network undergoes a handover, the terminal sends a registration request to the access network device, but the core network device selected by the terminal is inconsistent with the core network device selected by the access network device.

[0149] Step 902: Send a second registration message to the first core network device.

[0150] In some embodiments, since the core network device selected by the terminal is inconsistent with the core network device selected by the access network device, the second registration message sent by the terminal to the access network device is sent by the access network device to the first core network device, thereby resulting in a network registration failure.

[0151] In some embodiments, the access network device sends the second registration message to the first core network device, receives a registration rejection message sent by the first core network device, and the access network device sends the registration rejection information to the terminal through a downlink direct transfer message, that is, the optional implementation manner in the embodiments shown as Figure 4 shown.

[0152] In the above embodiments, when the network undergoes a handover, the access network device does not notify the terminal of the core network device selected by the current network. The registration request of the terminal will be sent by the access network device to the core network device selected by the network. When the core network device requested by the terminal is inconsistent with the core network device selected by the network, it will result in a failure of the terminal's network registration.

[0153] Figure 10 The flowchart of the wireless communication method applied to an access network device proposed in the embodiments of the present disclosure is based on Figure 7 、 Figure 9 shown in the embodiments, as Figure 10 shown, and includes the following steps:

[0154] Step 1001: Receive a third registration message sent by the terminal in the idle state.

[0155] In some embodiments, the third registration message includes a first network slice identifier, where the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device.

[0156] In some embodiments, the first indication message received by the terminal includes registration rejection information, and the registration rejection information is used to indicate the network slice identifier that is rejected. In other words, the second network slice identifier is indicated in the registration rejection information.

[0157] In some embodiments, the third registration message is sent by the terminal to the access network device based on the first indication message, where the first network slice identifier allowed to access by the first core network device is carried in the third registration message.

[0158] Step 1002: Establish a connection with the terminal and receive the second indication message sent by the terminal.

[0159] In some embodiments, the second indication message includes the identification information of the first core network device, and the second indication message is used to instruct the access network device to send the third registration message to the first core network device.

[0160] In some embodiments, the second indication message may be carried by RRC signaling.

[0161] In some embodiments, the access network device and the terminal establish a connection by starting a link establishment process, and in the link establishment completion message, the access network device is informed of the identification of the core network device corresponding to the third registration message sent by the terminal, so as to instruct the access network device to send the third registration message to the first core network device, thereby completing network registration. The second indication message may be the link establishment completion message.

[0162] In some embodiments, for the optional implementation manners of step 1001 and step 1002, reference may be made to Figure 5 the optional implementation manners in the embodiments shown, which will not be elaborated herein.

[0163] In the above embodiments, the terminal initiates network registration to the core network device by receiving the identification of the core network device indicated in the indication message by the access network device, and in the link establishment process, the access network device is informed of the identification information of the core network device requested by the terminal for registration, so as to implement the network registration of the terminal.

[0164] Figure 11 The flowchart of the wireless communication method applied to an access network device proposed in the embodiments of the present disclosure is based on Figure 7 、 Figure 9 the embodiments shown, as Figure 11 shown, includes the following steps:

[0165] Step 1101: Receive the fourth registration message sent by the terminal in the idle state.

[0166] In some embodiments, the fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers allocated by the access network device for the first core network device or the second core network device.

[0167] In some embodiments, in Figure 9After step 902, the access network device sends a first indication message to the terminal. The first indication message includes registration rejection information and identification information of the first core network device selected by the access network device. Based on the first indication message, the terminal can either ignore the registration rejection information or store the second network slice identifier in the rejection list of the first core network device.

[0168] In some embodiments, the access network device receiving the fourth registration message sent by the terminal in the idle state may be that after the terminal receives the first indication message sent by the access network device, it switches from the connected state to the idle state and sends the fourth registration message to the access network device.

[0169] Step 1102: Establish a connection with the terminal and receive the second indication message sent by the terminal.

[0170] In some embodiments, the second indication message includes the identification information of the first core network device or the identification information of the second core network device. The second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

[0171] In some embodiments, the second indication message may be carried by RRC signaling.

[0172] In some embodiments, the access network device and the terminal establish a connection by starting a link establishment process, and through the second indication message sent by the terminal, the terminal is used to inform the access network device of the identification information of the core network device corresponding to the network slice identifier carried in the registration message.

[0173] In some embodiments, after the access network device receives the second indication message sent by the terminal, it sends the fourth registration message to the core network device allowed to access corresponding to the fourth network slice. When the fourth network slice is the network slice identifier allowed to access by the first core network device, the access network device sends the fourth registration message to the first core network device. When the fourth network slice is the network slice identifier allowed to access by the second core network device, the access network device sends the fourth registration message to the second core network device to complete network registration.

[0174] For alternative implementation manners of step 1101 and step 1102, reference may be made to Figure 6 the alternative implementation manners in the embodiments shown, which will not be elaborated here.

[0175] In the above embodiments, the access network device adds the identification information of the core network device indicating network selection to the first indication message for the terminal to perform adaptive selection and inform the access network device of the core network device selected by the terminal, thereby completing the network registration of the terminal.

[0176] Figure 12Schematic flow diagram of a wireless communication method applied to a first core network device proposed by the present disclosure, as shown in Figure 12 shown, the method includes the following steps:

[0177] Step 1201, send a first indication message to the access network device.

[0178] In some embodiments, the first indication message includes registration rejection information and identification information of the first core network device. The registration rejection information is used to indicate the network slice identifier that is rejected. The first indication message is used for the access network device to forward to the terminal and assist the terminal to perform a first operation.

[0179] In some embodiments, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of the second core network device requested by the terminal for registration; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating a network registration to the first core network device; initiating a network registration to the second core network device.

[0180] In some embodiments, the first core network device receives the registration information forwarded by the access network device. The registration information includes the network slice identifier accepted by the second core network device requested by the terminal for registration. Since this network slice identifier is not the one allocated by the access network device for the first core network device, the first core network device sends registration rejection information to the access network device. The registration rejection information includes this network slice identifier, and the first core network device sends the identification information of the first core network device to the access network device, so that the access network device sends the registration rejection information and the network slice identifier of the first core network device to the terminal, and the terminal performs the first operation based on the registration rejection information and the network slice identifier of the first core network device.

[0181] In some embodiments, the first core network device is the core network device selected by the access network device when the network undergoes a handover. That is, when the current terminal undergoes a network handover, it can successfully initiate a network registration to the first core network device. Otherwise, the terminal will fail to register.

[0182] In the above embodiments, the first core network device can send the identification information of the first core network device together with the registration rejection information to the access network device when the terminal fails to register for the first time, so that the access network device sends it to the terminal to assist the terminal to perform the first operation, improve the success rate of the terminal's network registration, and avoid the terminal wrongly storing the rejected slice information.

[0183] The following are the specific implementation manners of the wireless communication method provided by the present disclosure:

[0184] Solution 1: Ignore the registration rejection message received on the shared network and initiate the registration process again in the idle state.

[0185] As Figure 13A shown in the interaction schematic diagram, when the terminal is in the connected state and after it switches to the 5G shared network and initiates a registration request, if it receives a registration rejection message from the network and the reason value is carried, it ignores the rejection message. If the rejection message carries a RejectNSSAI / Extended rejected NSSAI cell, it releases the link, re-resides, and then re-initiates the registration process.

[0186] Optionally, the optional implementation of Solution 1 can be referred to Figure 2 、 Figure 4 、 Figure 5 the embodiments shown.

[0187] Solution 2: When the network switches to the shared network, it indicates the PLMN selected by the current network to the terminal.

[0188] As Figure 13B shown in the interaction schematic diagram, the network device adds an indication in the handover message to inform the terminal of the PLMN selected by the current network, thereby preventing the RequestNSSAI carried in the terminal's registration message from being incorrect due to the inconsistency between the terminal and the PLMN selected by the network when switching to the shared cell, resulting in abnormal registration.

[0189] Optionally, the optional implementation of Solution 2 can be referred to Figure 2 、 Figure 3 the embodiments shown.

[0190] Solution 3: Carry the PLMN selected by the network in the registration rejection message, and the terminal performs adaptation and synchronization.

[0191] 1. As Figure 13C shown in the interaction schematic diagram, the network adds an indication of the PLMN selected by the network in the REGISTRATION REJECT message for the terminal to identify whether the PLMN selected by the terminal when initiating the registration process is consistent with the PLMN selected by the network. If not, it releases and re-resides to initiate the registration process.

[0192] 2. Optional operation: When the PLMN indicated in the REGISTRATION REJECT message is inconsistent with the PLMN selected by the terminal, the terminal can choose to discard the rejection message, or ignore the RejectNSSAI / Extended rejected NSSAI cell carried in the message, or update the slice information in the RejectNSSAI / Extended rejected NSSAI cell in the PLMN-related slice information stored locally by the terminal.

[0193] 3. Optional operation: When the UE releases and re - camps and then initiates a camp - on again, the UE can choose to initiate registration with PLMN1 or initiate registration with PLMN2.

[0194] Optionally, the optional implementation of Solution 3 can be referred to Figure 2 、 Figure 4 、 Figure 6 the optional implementation in the embodiments shown.

[0195] Figure 14 FIG. 1400 is a schematic structural diagram of a wireless communication device 1400 according to an embodiment of the present disclosure. Applied to a terminal, as Figure 14 shown, the device includes:

[0196] A transceiver module 1401, configured to receive a first indication message sent by an access network device, where the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected.

[0197] A processing module 1402, configured to perform a first operation based on the first indication message.

[0198] In some embodiments, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of a second core network device for which the UE requests registration; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating a network registration with the first core network device; initiating a network registration with the second core network device.

[0199] In some embodiments, the processing module is further configured to send a first registration message to the access network device based on the identification information of the first core network device, so that the access network device sends the first registration message to the first core network device, where the first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device.

[0200] In some embodiments, the transceiver module is further configured to send a second registration message to the access network device, where the second registration message includes a second network slice identifier, and the second network slice identifier is any one of the network slice identifiers assigned by the access network device to a second core network device, the second core network device is the core network device selected by the UE, and the second core network device and the first core network device are under the same shared cell.

[0201] The processing module is further configured to ignore the second network slice identifier carried in the first indication message; transition from the connected state to the idle state, and send a third registration message to the access network device, where the third registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; establish a connection with the access network device, and send a second indication message, where the second indication message includes the identification information of the first core network device, and the second indication message is used to instruct the access network device to send the third registration message to the first core network device.

[0202] The processing module is further configured to transition from the connected state to the idle state, and send a fourth registration message to the access network device, where the fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device or the second core network device; establish a connection with the access network device, and send a second indication message, where the second indication message includes the identification information of the first core network device or the identification information of the second core network device, and the second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

[0203] In summary, for the wireless communication device proposed in the present disclosure, the terminal receives a first indication message sent by the access network device, where the first indication message includes registration rejection information and / or the identification information of the first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected; based on the first indication message, the terminal performs a first operation. For the device provided in the present disclosure, the terminal can, based on the indication message, ignore the rejected network slice identifier, avoid the problem that the terminal wrongly stores the rejected slice information and causes mis-prohibition of TAI, and further, by increasing the indication content, be used for the terminal to initiate network registration again, avoid the occurrence probability of registration anomalies, and improve the user experience.

[0204] Figure 15 FIG. 1500 is a schematic structural diagram of a wireless communication device 1500 according to an embodiment of the present disclosure. Applied to an access network device, such as Figure 15 shown, the device includes:

[0205] A transceiver module 1501, configured to send a first indication message to the terminal, where the first indication message is used to assist the terminal in performing a first operation, the first indication message includes registration rejection information and / or the identification information of the first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected.

[0206] In some embodiments, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of the second core network device to which the terminal requests registration; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating network registration to the first core network device; initiating network registration to the second core network device.

[0207] In some embodiments, the transceiver module is further configured to receive a first registration message sent by the terminal in the connected state, where the first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; and send the first registration message to the first core network device.

[0208] In some embodiments, the transceiver module is further configured to receive a second registration message sent by the terminal, where the second registration message includes a second network slice identifier, and the second network slice identifier is any one of the network slice identifiers assigned by the access network device to the second core network device, the second core network device is the core network device selected by the terminal, and the second core network device and the first core network device are under the same shared cell; and send the second registration message to the first core network device.

[0209] In some embodiments, the transceiver module is further configured to receive a third registration message sent by the terminal in the idle state, where the third registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; establish a connection with the terminal, and receive a second indication message sent by the terminal, where the second indication message includes the identification information of the first core network device, and the second indication message is used to instruct the access network device to send the third registration message to the first core network device.

[0210] In some embodiments, the transceiver module is further configured to receive a fourth registration message sent by the terminal in the idle state, where the fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device or the second core network device; establish a connection with the terminal, and receive a second indication message sent by the terminal, where the second indication message includes the identification information of the first core network device or the identification information of the second core network device, and the second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

[0211] In summary, for the wireless communication device provided in this disclosure, the access network device sends a first indication message to the terminal. The first indication message is used to assist the terminal in performing a first operation. The first indication message includes registration rejection information and / or identification information of the first core network device selected by the access network device. The registration rejection information is used to indicate the network slice identifier that is rejected. The device provided in this disclosure can add indication information to the indication message sent to the terminal for the terminal to perform network registration.

[0212] Figure 16 FIG. is a schematic structural diagram of a wireless communication device 1600 according to an embodiment of this disclosure. Applied to the first core network device, such as Figure 16 As shown, the device includes:

[0213] A transceiver module 1601, configured to send a first indication message to an access network device. The first indication message includes registration rejection information and identification information of the first core network device. The registration rejection information is used to indicate the network slice identifier that is rejected. The first indication message is for the access network device to forward to the terminal and assist the terminal in performing a first operation.

[0214] In some embodiments, the first operation includes at least one of the following: not storing the registration rejection information in the rejection list of the second core network device requested by the terminal to register; storing the registration rejection information in the rejection list of the first core network device; ignoring the registration rejection information; initiating a network registration to the first core network device; initiating a network registration to the second core network device.

[0215] Figure 17 FIG. is a schematic structural diagram of an electronic device 1700 for implementing the above wireless communication method according to an exemplary embodiment.

[0216] Referring to Figure 17 , the electronic device 1700 may include one or more of the following components: a processing component 1702, a memory 1704, a power supply component 1706, an input / output (I / O) interface 1708, a sensor component 1710, and a communication component 1712.

[0217] The processing component 1702 generally controls the overall operation of the electronic device 1700, such as operations associated with display, telephone call, data communication, battery management, and recording operations. The processing component 1702 may include one or more processors 1720 to execute instructions to complete all or part of the steps of the above method. In addition, the processing component 1702 may include one or more modules to facilitate the interaction between the processing component 1702 and other components. For example, the processing component 1702 may include an equalization module to facilitate the interaction between the power supply component 1706 and the processing component 1702.

[0218] The memory 1704 is configured to store various types of data to support the operation of the electronic device 1700. Examples of such data include instructions for any application or method operating on the electronic device 1700, contact data, phone book data, messages, pictures, videos, and the like. The memory 1704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disks, or optical disks.

[0219] The power component 1706 provides power to the various components of the electronic device 1700. The power component 1706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1700.

[0220] The I / O interface 1708 provides an interface between the processing component 1702 and a peripheral interface module, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: home button, volume buttons, power-on button, and lock button.

[0221] The sensor component 1710 includes one or more sensors for providing an assessment of the status of the electronic device 1700 in various aspects. For example, the sensor component 1710 can detect the on / off state of the electronic device 1700, the relative positioning of components, such as the display and keypad of the electronic device 1700. The sensor component 1710 can also detect a change in the position of the electronic device 1700 or a component of the electronic device 1700, the presence or absence of user contact with the electronic device 1700, the orientation or acceleration / deceleration of the electronic device 1700, and a change in the temperature of the electronic device 1700. The sensor component 1710 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 1710 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 1710 may further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0222] The communication component 1712 is configured to facilitate communication between the electronic device 1700 and other devices in a wired or wireless manner. The electronic device 1700 may access a communication standard-based wireless network, such as WiFi, 2G or 3G, 4G LTE, 5G NR (New Radio), or a combination thereof. In an exemplary embodiment, the communication component 1712 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1712 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0223] In an exemplary embodiment, the electronic device 1700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-described method.

[0224] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1704 including instructions, and the above instructions may be executed by a processor 1720 of the electronic device 1700 to complete the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0225] Embodiments of the present disclosure also propose a communication system including a terminal, an access network device, and a core network device, wherein the terminal, the access network device, and the core network device are configured to execute the wireless communication method described in the above embodiments of the present disclosure.

[0226] In some embodiments, the core network device includes a first core network device and a second core network device, and the first core network device and the second core network device are under the same shared cell.

[0227] Embodiments of the present disclosure also propose a communication device including a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, configured to control the wireless signal transceiver of the transceiver by executing computer-executable instructions on the memory, and be able to implement the wireless communication method described in the above embodiments of the present disclosure.

[0228] Embodiments of the present disclosure also provide a computer storage medium. The computer storage medium stores computer-executable instructions. After the computer-executable instructions are executed by a processor, the wireless communication method described in the above embodiments of the present disclosure can be implemented.

[0229] Embodiments of the present disclosure also provide a chip, including a memory and a processor. The processor is configured to implement the wireless communication method described in the above embodiments of the present disclosure by executing the computer-executable instructions on the memory.

[0230] It should be noted that the terms "first", "second", etc. in the description of the present disclosure's specification, claims, and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described here can be implemented in an order other than those illustrated or described here. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0231] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0232] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present disclosure includes additional implementations, where the functions can be executed in a way that is not shown or discussed, including in a substantially simultaneous manner according to the involved functions or in a reverse order, which should be understood by those skilled in the technical field to which the embodiments of the present disclosure belong.

[0233] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definitional sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processing module, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or used in conjunction with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion having one or more wirings (control method), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which a program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then storing it in a computer memory.

[0234] It should be understood that various parts of the embodiments of the present disclosure can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0235] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium, and when the program is executed, it includes one or a combination of the steps of the method embodiment.

[0236] In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing module, may exist separately as individual physical units, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. The above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disc, etc.

[0237] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A wireless communication method, characterized in that, The method includes: The terminal receives a first indication message sent by an access network device, where the first indication message includes registration rejection information and / or identification information of a first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected. Based on the first indication message, perform a first operation.

2. The method according to claim 1, characterized in that, The first operation includes at least one of the following: Do not store the registration rejection information in the rejection list of a second core network device for which the terminal requests registration. Store the registration rejection information in the rejection list of the first core network device. Ignore the registration rejection information. Initiate a network registration to the first core network device. Initiate a network registration to the second core network device.

3. The method according to claim 2, wherein The first indication message includes identification information of the first core network device selected by the access network device. Based on the first indication message, performing the first operation includes: Based on the identification information of the first core network device, send a first registration message to the access network device, so that the access network device sends the first registration message to the first core network device. The first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device.

4. The method according to claim 2, wherein Before receiving the first indication message sent by the access network device, the method further includes: Send a second registration message to the access network device. The second registration message includes a second network slice identifier, and the second network slice identifier is any one of the network slice identifiers assigned by the access network device to a second core network device. The second core network device is the core network device selected by the terminal, and the second core network device and the first core network device are under the same shared cell.

5. The method according to claim 4, wherein When the terminal is in a connected state and the first indication message includes registration rejection information, based on the first indication message, performing the first operation includes: Ignore the second network slice identifier carried in the first indication message. Convert from the connected state to an idle state, and send a third registration message to the access network device. The third registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device. Establish a connection with the access network device, and send a second indication message. The second indication message includes the identification information of the first core network device, and the second indication message is used to instruct the access network device to send the third registration message to the first core network device.

6. The method according to claim 4, characterized in that When the terminal is in a connected state and the first indication message includes registration rejection information and identification information of the first core network device selected by the access network device, based on the first indication message, performing the first operation includes: Transition from the connected state to the idle state, and send a fourth registration message to the access network device, where the fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device or the second core network device; Establish a connection with the access network device, and send a second indication message, where the second indication message includes the identifier information of the first core network device or the identifier information of the second core network device, and the second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

7. A wireless communication method, characterized in that, The method includes: The access network device sends a first indication message to the terminal, where the first indication message is used to assist the terminal in performing a first operation, and the first indication message includes registration rejection information and / or the identifier information of the first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected.

8. The method according to claim 7, wherein The first operation includes at least one of the following: Do not store the registration rejection information in the rejection list of the second core network device requested by the terminal for registration; Store the registration rejection information in the rejection list of the first core network device; Ignore the registration rejection information; Initiate network registration to the first core network device; Initiate network registration to the second core network device.

9. The method according to claim 8, characterized in that, The first indication message includes the identifier information of the first core network device selected by the access network device, and the method further includes: Receive a first registration message sent by the terminal in the connected state, where the first registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; Send the first registration message to the first core network device.

10. The method according to claim 8, wherein Before sending the first indication message to the terminal, the method further includes: Receive a second registration message sent by the terminal, where the second registration message includes a second network slice identifier, and the second network slice identifier is any one of the network slice identifiers assigned by the access network device to the second core network device, and the second core network device is the core network device selected by the terminal, and the second core network device and the first core network device are under the same shared cell; Send the second registration message to the first core network device.

11. The method according to claim 10, wherein The first indication message includes registration rejection information, and the method further includes: Receive a third registration message sent by the terminal in the idle state, where the third registration message includes a first network slice identifier, and the first network slice identifier is any one of the network slice identifiers assigned by the access network device to the first core network device; Establish a connection with the terminal, and receive a second indication message sent by the terminal, where the second indication message includes the identifier information of the first core network device, and the second indication message is used to instruct the access network device to send the third registration message to the first core network device.

12. The method according to claim 10, wherein The first indication message includes registration rejection information and identification information of the first core network device selected by the access network device, and the method further includes: Receiving a fourth registration message sent by the terminal in the idle state, where the fourth registration message includes a fourth network slice identifier, and the fourth network slice identifier is any one of the network slice identifiers allocated by the access network device for the first core network device or the second core network device; Establishing a connection with the terminal and receiving a second indication message sent by the terminal, where the second indication message includes the identification information of the first core network device or the identification information of the second core network device, and the second indication message is used to instruct the access network device to send the fourth registration message to the first core network device or the second core network device.

13. A wireless communication method, characterized in that, The method includes: The first core network device sends a first indication message to the access network device, where the first indication message includes registration rejection information and the identification information of the first core network device, and the registration rejection information is used to indicate the network slice identifier that is rejected, and the first indication message is used for the access network device to forward to the terminal and assist the terminal to perform a first operation.

14. The method according to claim 13, wherein The first operation includes at least one of the following: Not storing the registration rejection information in the rejection list of the second core network device requested by the terminal for registration; Storing the registration rejection information in the rejection list of the first core network device; Ignoring the registration rejection information; Initiating network registration to the first core network device; Initiating network registration to the second core network device.

15. A wireless communication device, characterized in that, Includes: A transceiver module, configured to receive, by the terminal, a first indication message sent by the access network device, where the first indication message includes registration rejection information and / or identification information of the first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected; A processing module, configured to perform a first operation based on the first indication message.

16. A wireless communication device, characterized in that, Includes: A transceiver module, configured to send, by the access network device, a first indication message to the terminal, where the first indication message is used to assist the terminal to perform a first operation, the first indication message includes registration rejection information and / or identification information of the first core network device selected by the access network device, and the registration rejection information is used to indicate the network slice identifier that is rejected.

17. A wireless communication device, characterized in that, Includes: A transceiver module, configured to send, by the first core network device, a first indication message to the access network device, where the first indication message includes registration rejection information and the identification information of the first core network device, and the registration rejection information is used to indicate the network slice identifier that is rejected, and the first indication message is used for the access network device to forward to the terminal and assist the terminal to perform a first operation.

18. A communication system, characterized in that, Includes a terminal, an access network device, and a core network device. Among them, the terminal is configured to perform the method according to any one of claims 1-6, the access network device is configured to perform the method according to any one of claims 7-12, and the core network device is configured to perform the method according to claims 13-14.

19. The method according to claim 18, characterized in that The core network device includes a first core network device and a second core network device, and the first core network device and the second core network device are under the same shared cell.

20. A communication device, wherein, Comprising: A transceiver; A memory; A processor, which is respectively connected to the transceiver and the memory, and is configured to control the wireless signal transceiver of the transceiver by executing computer-executable instructions on the memory, and can implement the method described in any one of claims 1-6 or 7-12 or 13-14.

21. A computer storage medium, wherein, The computer storage medium stores computer-executable instructions; after being executed by the processor, the computer-executable instructions can implement the method described in any one of claims 1-6 or 7-12 or 13-14.

22. A chip, comprising: A memory and a processor, and the processor is configured to implement the method described in any one of claims 1-6 or 7-12 or 13-14 by executing computer-executable instructions on the memory.

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