Method and device used for wireless communication

Abstract

The invention discloses a method and a device used for wireless communication. The first node executes a cell reselection process based on network slices; recording first information; the first information is used for indicating information of a first network slice; the first network slice is requested in a first cell; the first cell is a resident cell after the cell reselection process based on the network slice is executed; and sending a first report, wherein the first report comprises the first information. According to the invention, the efficiency of executing the cell reselection process based on the network slice by the first node is improved, and the success rate of requesting the network slice service after executing the cell reselection process based on the network slice by the first node is improved.

Description

Technical Field

[0001] This application relates to a method and apparatus in a wireless communication system, and particularly to a solution and apparatus related to recording information on cell reselection based on network slicing in a wireless communication system. Background Art

[0002] SON (Self-Organizing Network) includes a self-configuration function and a self-optimization function. Through the measurement reports of UEs (User Equipment) and the measurement and analysis of the network itself, not only can the automatic configuration and automatic connection of new nodes in the network be achieved, but also the parameter configuration and deployment planning of the network can be optimized, thereby improving the performance of the network.

[0003] In traditional methods, operators need to collect on-site wireless data through drive tests for the optimization of mobile network performance. This method inevitably brings a great deal of labor costs to operators. With the development of SON, 3GPP (3rd Generation Partnership Project) has studied and defined MDT (Minimization of Drive Test) as an improved solution to the traditional drive test method. In MDT, various UEs can measure and record specified data and independently report the recorded data to the network, thus helping operators quickly optimize network performance while reducing maintenance costs. MDT includes the following two working modes: Immediate MDT and Logged MDT. Among them, Immediate MDT means that a UE in the RRC (Radio Resource Control) connected state immediately reports the recorded measurement results to the network when the conditions for triggering measurement recording are met; Logged MDT means that a UE in the RRC idle state or RRC inactive state saves the recorded measurement results first when the conditions for triggering measurement recording are met, and then reports the measurement results to the network after entering the RRC connected state subsequently.

[0004] In Release 17 of 3GPP NR (New Radio), the feature of network slice-based cell reselection is introduced. This feature aims to help the UE reselect to a cell that can support the network slice provided by the upper layer of the UE (such as UE NAS), so that the UE can quickly obtain the service of the desired network slice after performing the network slice-based cell reselection process. Before performing the network slice-based cell reselection process, the UE needs to obtain the following information: NSAG (Network Slice AS Group) information for cell reselection from the core network, such as NSAG ID (Identity), the network slice identifier associated with the NSAG, the TA information associated with the NSAG, and the NSAG priority (Priority); and information for network slice-based cell reselection from the access network, such as the SIB (System Information Block) 16 message or the RRC release message. Based on the above information, during the process of performing cell reselection, the UE can consider the information of the NSAG supported by the frequency band when sorting the priorities of the frequency bands, and perceive the support situation of the neighboring cell for the NSAG (or rather, the network slice associated with the NSAG). Summary of the Invention

[0005] The applicant has found through research that the existing SON / MDT mechanism does not consider recording and reporting the information of the network slice requested by the UE after performing the network slice-based cell reselection process, so that the network cannot analyze and optimize the configuration or deployment of the NSAG for the cell reselection process, which is not conducive to improving the efficiency of the UE performing the network slice-based cell reselection process and the success rate of requesting the network slice service after performing the network slice-based cell reselection process.

[0006] In view of the above problems, the present application discloses a solution. It should be noted that although a large number of embodiments of the present application are directed to the NR system, the present application is also applicable to other solutions, such as scenarios of LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), 5G+, or 6G systems, achieving technical effects similar to those of the NR system. Further, although the present application gives specific implementation manners for the SON / MDT mechanism, the present application can also be used in mechanisms such as AI (Artificial Intelligence) / ML (Machine Learning), achieving technical effects similar to those of the SON / MDT mechanism. Further, although the original intention of the present application is directed to the Uu air interface, the present application can also be used in the PC5 interface, achieving technical effects similar to those of the Uu air interface. Further, although the original intention of the present application is directed to the UE and base station scenario, the present application is also equally applicable to the V2X (Vehicle-to-Everything) scenario, the communication scenarios between the UE and the relay, and between the relay and the base station, achieving technical effects similar to those in the UE and base station scenario. Further, although the original intention of the present application is directed to the UE and base station scenario, the present application is also equally applicable to the communication scenarios of NCR (Network Controlled Repeater), IAB (Integrated Access and Backhaul), or WAB (Wireless Access and Backhaul), achieving technical effects similar to those in the UE and base station scenario. Further, although the original intention of the present application is directed to the TN (Terrestrial Network) scenario, the present application is also equally applicable to the communication scenario of NTN (Non-Terrestrial Network), achieving technical effects similar to those in the TN scenario. In addition, adopting a unified solution in different scenarios helps to reduce the hardware complexity and cost. Without conflict, the embodiments and features in any node of the present application can be applied to any other node. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily.

[0007] When needed, the interpretation of the terminology in the present application refers to the definitions in the 3GPP specification protocol series TS38; or, refers to the definitions in the 3GPP specification protocol series TS23; or, refers to the definitions in the 3GPP specification protocol series TS24.

[0008] The present application discloses a method in a first node used for wireless communication, which is characterized by including:

[0009] Performing a cell reselection process based on network slicing;

[0010] Recording first information; the first information is used to indicate information of a first network slice; the first network slice is requested in a first cell; the first cell is a resident cell after performing the cell reselection process based on network slicing;

[0011] Sending a first report, where the first report includes the first information.

[0012] The above method can assist in optimizing the configuration or deployment of the NSAG for the cell reselection process, which is beneficial to improving the efficiency of the first node in performing the cell reselection process based on network slicing, and is also beneficial to improving the success rate of the first node in requesting network slice services after performing the cell reselection process based on network slicing.

[0013] Specifically, according to an aspect of the present application, the above method is characterized by including:

[0014] The first information includes information of the network slice used in performing the cell reselection process based on network slicing.

[0015] The above aspect can improve the completeness of the first node in recording the first information, which is beneficial to assisting in optimizing the configuration or deployment of the NSAG for the cell reselection process.

[0016] Specifically, according to an aspect of the present application, the above method is characterized in that the triggering conditions for recording the first information include at least one of the following:

[0017] The service of the first network slice cannot be obtained in the first cell;

[0018] The number of the first network slices is greater than a first threshold;

[0019] The identification information of the first network slice meets a first preset value;

[0020] The area information of the first cell meets a second preset value.

[0021] In the above aspect, the first node can record and report the first information in a targeted manner, which is beneficial to saving signaling overhead and power consumption, reducing processing complexity, and improving the flexibility and diversity of the first node in recording the first information.

[0022] Specifically, according to an aspect of the present application, the above method is characterized by including:

[0023] Receive a first signaling, where the first signaling instructs to record the first information.

[0024] In the above aspect, the indication of the network helps to reduce the implementation complexity of the first node.

[0025] Specifically, according to one aspect of the present application, the above method is characterized in that the first signaling instructs at least one of the following:

[0026] The content included in the first information;

[0027] The triggering condition for recording the first information.

[0028] The above aspect helps to improve the pertinence and accuracy of the first node in recording the first information, not only saving signaling overhead, but also assisting the network in obtaining the information of interest.

[0029] The present application discloses a method in a second node used for wireless communication, which is characterized by including:

[0030] Send a first signaling, where the first signaling instructs the first node to record the first information;

[0031] Wherein, the first information is used to indicate the information of the first network slice; the first network slice is requested by the first node in the first cell; the first cell is the resident cell of the first node after performing the cell reselection process based on the network slice.

[0032] The above method can strengthen the control of the second node over the first node, which is beneficial for the second node to analyze and optimize the configuration or deployment of the NSAG for the cell reselection process.

[0033] Specifically, according to one aspect of the present application, the above method is characterized by including:

[0034] The first information includes the information of the network slice used in performing the cell reselection process based on the network slice.

[0035] The above method is beneficial for the second node to obtain more complete information, so as to more comprehensively analyze and optimize the configuration or deployment of the NSAG for the cell reselection process.

[0036] Specifically, according to one aspect of the present application, the above method is characterized in that the first signaling instructs at least one of the following:

[0037] The content included in the first information;

[0038] The triggering condition for recording the first information.

[0039] The above method is conducive to the second node obtaining the information it is interested in, so that it can analyze and optimize the configuration or deployment of the NSAG for the cell reselection process in a targeted manner.

[0040] Specifically, according to one aspect of the present application, the above method is characterized in that the triggering condition for recording the first information includes at least one of the following:

[0041] The service of the first network slice cannot be obtained in the first cell;

[0042] The number of the first network slices is greater than a first threshold;

[0043] The identification information of the first network slice satisfies a first preset value;

[0044] The area information of the first cell satisfies a second preset value.

[0045] For the second node to analyze and optimize the configuration or deployment of the NSAG for the cell reselection process, the above aspect is conducive to improving its flexibility and accuracy, and is conducive to reducing the complexity and power consumption during its processing.

[0046] Specifically, according to one aspect of the present application, the above method is characterized in that it includes:

[0047] Receiving a first report, where the first report includes the first information.

[0048] The above aspect is conducive to the second node analyzing and optimizing the configuration or deployment of the NSAG for the cell reselection process according to the information reported by the first node.

[0049] Specifically, according to one aspect of the present application, the above method is characterized in that it includes:

[0050] Determining the information of the first network slice based on the first information.

[0051] The above aspect is conducive to the second node analyzing and optimizing the complexity and power consumption of the parameter configuration or deployment plan of the cell reselection based on network slices according to the network slice service requested by the first node after performing the cell reselection process based on network slices.

[0052] The present application discloses a first node used for wireless communication, which is characterized in that it includes:

[0053] The first node includes: one or more processors and a memory;

[0054] The memory is coupled to the one or more processors, and the memory is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the first node to execute the method in the first node for wireless communication.

[0055] This application discloses a second node for wireless communication, which is characterized by including:

[0056] The second node includes: one or more processors and a memory;

[0057] The memory is coupled to the one or more processors, and the memory is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the second node to execute the method in the second node for wireless communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0059] Figure 1 A flowchart showing the communication of the first node according to an embodiment of the present application;

[0060] Figure 2 A schematic diagram showing the network architecture according to an embodiment of the present application;

[0061] Figure 3 A schematic diagram showing an embodiment of the radio protocol architecture of the user plane and the control plane according to an embodiment of the present application;

[0062] Figure 4 A schematic diagram showing the first communication device and the second communication device according to an embodiment of the present application;

[0063] Figure 5 A flowchart showing the transmission between the first node N1 and the second node N2 according to an embodiment of the present application;

[0064] Figure 6 A flowchart showing how to determine whether to trigger recording the first information according to the number of the first network slices under the condition that the service of the first network slice cannot be obtained in the first cell;

[0065] Figure 7The flowchart shows how to determine whether to trigger recording of the first information under the condition that the identification information of the first network slice meets a first preset value and the area information of the first cell meets a second preset value according to an embodiment of the present application;

[0066] Figure 8 The schematic diagram shows the first information in the case where the first node unconditionally records the first network slice according to an embodiment of the present application;

[0067] Figure 9 The schematic diagram shows the first information as a response to the inability to obtain the service of the first network slice in the first cell according to an embodiment of the present application;

[0068] Figure 10 The flowchart shows that the first information implicitly indicates the information of the first network slice according to an embodiment of the present application;

[0069] Figure 11 The structural block diagram shows a processing device in a first node according to an embodiment of the present application;

[0070] Figure 12 The structural block diagram shows a processing device in a second node according to an embodiment of the present application; Detailed implementation

[0071] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined arbitrarily. Based on considerations such as performance, flexibility, complexity, overhead, and compatibility, those skilled in the art have the motivation to flexibly combine the embodiments in different drawings on the premise of non-conflict, including but not limited to the embodiments in Figure 1 and the embodiments in Figure 5 - Figure 10 and the embodiments in Figure 5 and the embodiments in Figure 6 - Figure 10 and the embodiments in

[0072] Example 1

[0073] Embodiment 1 exemplifies the flowchart of the communication of the first node according to an embodiment of the present application, as shown in Figure 1 shown. In the first node 100 shown in Figure 1 each box represents a step.

[0074] In Embodiment 1, the first node 100 performs a cell reselection process based on network slicing in step 101; records first information in step 102; the first information is used to indicate information of a first network slice; the first network slice is requested in a first cell; the first cell is the resident cell after performing the cell reselection process based on network slicing; and sends a first report in step 103, where the first report includes the first information.

[0075] As an embodiment, the first node performs the cell reselection process based on network slicing according to NAS messages and AS messages.

[0076] As an embodiment, the NAS message includes at least one of the following: a Registration Accept message; a UE Configuration Update Command message.

[0077] As an embodiment, the NAS message indicates NSAG information of an NSAG for cell reselection.

[0078] As an embodiment, the NSAG information includes at least one of the following: the NSAG ID of the NSAG; one or more network slice identifiers associated with the NSAG, such as S-NSSAI (Single Network Slice Selection Assistance Information); TA information associated with the NSAG (such as TAI (Tracking Area Identity) or TAC (Tracking Area Code)); the NSAG priority of the NSAG.

[0079] As an embodiment, the AS message includes at least one of the following: an SIB16 message; an RRC Release message.

[0080] As an embodiment, the AS message indicates NSAG information supported by a neighboring cell or the frequency band of the neighboring cell.

[0081] As an embodiment, performing the cell reselection process based on network slicing includes: performing the cell reselection process based on network slicing one or more times.

[0082] As an embodiment, the first cell is: the resident cell after the first node performs the cell reselection process based on network slicing.

[0083] As an embodiment, the first cell supports the NSAG used by the first node to perform the evaluation of the cell reselection process based on network slices.

[0084] As an embodiment, the NSAG used during the evaluation is the NSAG with the highest NSAG priority among the NSAGs used by the first node to perform the cell reselection process.

[0085] As an embodiment, the NSAG used during the evaluation is the NSAG with the highest NSAG priority among the NSAGs used by the first node to perform the cell reselection process, excluding the NSAG that has already been used during the evaluation.

[0086] As a sub - embodiment of the above - mentioned embodiment, the situation where the above - mentioned embodiment is applicable is that the first node does not measure any neighboring cells belonging to the frequency band that supports the NSAG used during the evaluation based on the frequency band.

[0087] As a sub - embodiment of the above - mentioned embodiment, the situation where the above - mentioned embodiment is applicable is that although the first node measures neighboring cells belonging to the frequency band that supports the NSAG used during the evaluation based on the frequency band, the neighboring cell is not the best cell or the highest - ranked cell.

[0088] As an embodiment, the request for the first network slice in the first cell means that the first network slice is the network slice requested after the first node accesses the first cell.

[0089] As an embodiment, the first information explicitly indicates the information of the first network slice. How to explicitly indicate the information of the first network slice is usually determined by the device vendor itself.

[0090] As an embodiment, the first information includes the identification information of the first network slice.

[0091] As an embodiment, the first information includes the identification information of the first network slice, and indication information on whether the service of the first network slice can be obtained in the first cell.

[0092] As an example, how to indicate whether the service of the first network slice can be obtained in the first cell is usually determined by the device vendor itself. Typically but not restrictively, it is indicated by AllowedNSSAI and / or RejectedNSSAI. Alternatively, it can be indicated by bit information or enumerated value information, etc. For example, a bit value of "0" indicates that the service of the first network slice cannot be obtained in the first cell, and a bit value of "1" indicates that the service of the first network slice can be obtained in the first cell; or, for example, it can be indicated by enumerated value information (such as "Service available") that the service of the first network slice can be obtained in the first cell.

[0093] As an example, the first information implicitly indicates the information of the first network slice.

[0094] As an example, the first information implicitly indicates the identification information of the first network slice.

[0095] As an example, the first information implicitly indicating the identification information of the first network slice includes: the first information is used to indicate that the cell reselection process based on network slices has been performed. How to explicitly indicate that the cell reselection process based on network slices has been performed is usually determined by the device vendor itself, for example, by bit information or enumerated value information, etc. Typically but not restrictively, the first information includes 1 bit of information. A bit value of "0" indicates that the cell reselection process based on network slices has not been performed, and a bit value of "1" indicates that the cell reselection process based on network slices has been performed; or, the first information includes 1 enumerated value information (such as "PerformedSlice-based Cell reselection"), and this enumerated value information will only be included in the first information when the cell reselection process based on network slices has been performed.

[0096] As an example, the first information includes the information of the network slice used in the cell reselection process based on network slices.

[0097] As an example, the network slice used in the cell reselection process based on network slices refers to: the network slice used for the cell reselection process based on network slices.

[0098] Typically but not restrictively, the network slice used in the cell reselection process based on network slices refers to: one or more network slices indicated by the NAS of the first node for the cell reselection process.

[0099] As an example, the network slice used in performing the cell reselection process based on network slices refers to the NSAG used when evaluating the cell reselection process based on network slices.

[0100] As an example, the information of the network slice used in performing the cell reselection process based on network slices includes one of the following: the identification information of the network slice used in performing the cell reselection process based on network slices, and the area information of the area suitable for the network slice used in performing the cell reselection process based on network slices.

[0101] As an example, the area suitable for the network slice used in performing the cell reselection process based on network slices refers to the area that supports the network slice used in performing the cell reselection process based on network slices.

[0102] As an example, the area suitable for the network slice used in performing the cell reselection process based on network slices refers to the area where there are available resources for the network slice used in performing the cell reselection process based on network slices.

[0103] As an example, the identification information of the network slice includes at least one of the following: the S-NSSAI of the network slice; the NSAG information of the NSAG associated with the network slice.

[0104] Typical but non-limiting, the information of the first network slice is: the Requested NSSAI of the first node.

[0105] Typical but non-limiting, the information of the first network slice is: the NSAG information of the NSAG associated with the Requested NSSAI of the first node for cell reselection.

[0106] Typical but non-limiting, the information of the network slice used in performing the cell reselection process based on network slices is: the NSSAI for the cell reselection process indicated by the NAS of the first node.

[0107] Typical but non-limiting, the information of the network slice used in performing the cell reselection process based on network slices is: the NSAG information of the NSAG used when evaluating the cell reselection process based on network slices.

[0108] As an example, the area information includes at least one of the following: the identification information of the area; the cell information of the area.

[0109] As an example, the identification information of the area includes at least one of the following: the PLMN (Public Land Mobile Network) identification of the area; the PNI-NPN (Public Network Integrated Non-Public Network) identification of the area; the SNPN (Stand-alone Non-Public Network) identification of the area; the CAG (Closed Access Group) identification of the area; the TAI of the area; the TAC of the area; the RANAC (RAN Area Code) of the area; the gNB ID of the area.

[0110] As an example, the cell information of the area includes one of the following: the cell identification of the cells within the area; the cell signal quality information of the cells within the area; the frequency point information of the cells within the area.

[0111] As an example, the cell identification includes at least one of the following: the PCI (Physical Cell Identity) of the cell; the NCGI (NR Cell Global Identifier) of the cell.

[0112] As an example, the cell signal quality information of the cell includes at least one of the following: the RSRP (Reference Signal Received Power) of the cell; the RSRQ (Reference Signal Received Quality) of the cell; the RSSI (Received Signal Strength Indicator) of the cell; the SNR (Signal to Noise Ratio) of the cell; the BER (Bit Error Rate) of the cell.

[0113] As an example, the frequency point information of the cells within the area is the ARFCN (Absolute Radio Frequency Channel Number).

[0114] As an example, the unit of the frequency point of the cells within the area is Hz (Hertz).

[0115] As an embodiment, the frequency point information of the cells within the area is the index value of the frequency point relative to the frequency point in the broadcast message of the first cell.

[0116] Typically but not restrictively, the frequency points of the cells within the area include F1, and if the serving frequency point of the first cell is F1, then the index value of the frequency point F1 is 0.

[0117] Typically but not restrictively, the frequency points of the cells within the area include F2, and if F2 is the second configured frequency point in the SIB4 message of the first cell, then the index value of the frequency point F2 is 2.

[0118] As an embodiment, the first report is sent through an RRC message.

[0119] As a sub - embodiment of the above - mentioned embodiment, the first report is an immediate MDT report.

[0120] As a sub - embodiment of the above - mentioned embodiment, the first report is a MeasurementReport.

[0121] As a sub - embodiment of the above - mentioned embodiment, the first report is a log MDT report.

[0122] As a sub - embodiment of the above - mentioned embodiment, the first report is a LogMeasReport.

[0123] As a sub - embodiment of the above - mentioned embodiment, the first report is an RLF (Radio Link Failure) - Report.

[0124] As a sub - embodiment of the above - mentioned embodiment, the first report is an RLF - Report caused by handover failure.

[0125] As an embodiment, the first report is sent through a NAS message.

[0126] As a sub - embodiment of the above - mentioned embodiment, the first report is sent through a RegistrationRequest message.

[0127] As a sub - embodiment of the above - mentioned embodiment, the first report is sent through a UEConfiguration Update Complete message.

[0128] As an embodiment, the first report is a report newly added for network slicing.

[0129] As an embodiment, the first report is a newly added report for cell reselection based on network slicing.

[0130] As an embodiment, the first report is a newly added report for the NSAG configuration for cell reselection.

[0131] As an embodiment, the first report is sent via RRC messages and NAS messages.

[0132] Example 2

[0133] Embodiment 2 exemplifies a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the appendix Figure 2 shown.

[0134] Appendix Figure 2Describes the network architecture 200. The network architecture 200 is a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system, or the network architecture 200 is a 5G+ network architecture, or the network architecture 200 is a 6G network architecture, or the network architecture 200 is a network architecture adopted in the future continuous evolution of 3GPP; the network architecture 200 can be referred to as 5GS (5G System) / EPS (Evolved Packet System), or the network architecture 200 can be referred to as 6GS (6G System); the network architecture 200 includes at least one of UE (User Equipment) 201, RAN (Radio Access Network) 202, core network 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet service 230. The network architecture 200 can be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the network architecture 200 provides packet-switched services. However, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The RAN includes node 203. The RAN may also include other nodes 204. Node 203 provides user and control plane protocol termination towards UE 201. Node 203 can be connected to other nodes 204 via the Xn interface (e.g., backhaul) / X2 interface. Node 203 can also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (Transmit Receive Point), or some other appropriate term. The core network 210 is 5GC (5G Core Network) / EPC (Evolved Packet Core), or the core network 210 is 6GC; node 203 provides an access point for UE 201 to the core network 210.Examples of the UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to the UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term. The node 203 is connected to the core network 210 through the S1 / NG interface. The core network 210 includes a Mobility Management Entity (MME) / Access and Mobility Management Function (AMF) / Session Management Function (SMF) 211, other MME / AMF / SMFs 214, a Serving Gateway (S-GW) / User Plane Function (UPF) 212, a Packet Data Network Gateway (P-GW) / UPF 213, and other nodes not shown in the figure. Figure 2 The MME / AMF / SMF 211 is a control node that processes the signaling between the UE 201 and the core network 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW / UPF 213 provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet service 230. The Internet service 230 includes carrier-corresponding Internet protocol services, specifically including the Internet, intranet, IP Multimedia Subsystem (IMS), and packet switching services.

[0135] As an embodiment, the first node includes the UE 201.

[0136] As an example, the second node includes the node 203.

[0137] As an example, the radio link between the UE 201 and the node 203 includes a cellular network link.

[0138] Example 3

[0139] Example 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to an embodiment of the present application, as shown in the appendix Figure 3 as shown.

[0140] Example 3 shows a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to an embodiment of the present application, as shown in the appendix Figure 3 as shown. Figure 3 It is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. Figure 3Show the radio protocol architecture of the control plane 300 for between a first communication node device (UE, gNB, RSU in V2X, MME or AMF) and a second communication node device (gNB, MME, AMF, UE or RSU in V2X), or between two UEs, with four layers: Layer 1, Layer 2, Layer 3, and NAS layer. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical layer) signal processing functions. The L1 layer will be referred to as PHY301 herein. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device, or between two UEs. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, and these sublayers terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides handover support for the first communication node device between the second communication node devices. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for disordered reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The NAS (Non-Access Stratum) sublayer 307 in the control plane 300 is used for the transmission of non-access stratum signaling between the first communication node device and the second communication node device, and this signaling transmission is transparent and invisible to the base station.The radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2). For the radio protocol architecture of the first communication node device and the second communication node device in the user plane 350, the physical layer 351, the PDCP sub-layer 354 in the L2 layer 355, the RLC sub-layer 353 in the L2 layer 355, and the MAC sub-layer 352 in the L2 layer 355 are generally the same as the corresponding layers and sub-layers in the control plane 300. However, the PDCP sub-layer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sub-layer 356. The SDAP sub-layer 356 is responsible for the mapping between QoS flows and data radio bearers (DRBs) to support service diversity. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., a remote UE, server, etc.).

[0141] As an example, the Figure 3 radio protocol architecture in is applicable to the first node.

[0142] As an example, the Figure 3 radio protocol architecture in is applicable to the second node.

[0143] As an example, the higher layer in this application refers to the layer above the physical layer.

[0144] As an example, the first signaling is generated in the NAS sub-layer 307.

[0145] As an example, the first signaling is generated in the RRC sub-layer 306.

[0146] As an example, the first signaling is generated in the RRC sub-layer 306 and the NAS sub-layer 307.

[0147] As an example, the first signaling is generated in the MAC sub-layer 302 or the MAC sub-layer 352.

[0148] As an example, the first signaling is generated in any one of the MAC sub-layer 302, the MAC sub-layer 352, and the NAS sub-layer 307.

[0149] As an example, the first signaling is generated in any one of the MAC sub-layer 302, the MAC sub-layer 352, and the RRC sub-layer 306.

[0150] As an example, the first signaling is generated in the PHY sublayer 301 or the PHY sublayer 351.

[0151] As an example, the first signaling is generated in any one of the PHY sublayer 301 and the PHY sublayer 351 and the NAS sublayer 307.

[0152] As an example, the first signaling is generated in any one of the PHY sublayer 301 and the PHY sublayer 351 and the RRC sublayer 306.

[0153] As an example, the first information is generated in the NAS sublayer 307.

[0154] As an example, the first information is generated in the RRC sublayer 306.

[0155] As an example, the first information is generated in the RRC sublayer 306 and the NAS sublayer 307.

[0156] As an example, the first information is generated in the MAC sublayer 302 or the MAC sublayer 352.

[0157] As an example, the first information is generated in any one of the MAC sublayer 302 and the MAC sublayer 352 and the NAS sublayer 307.

[0158] As an example, the first information is generated in any one of the MAC sublayer 302 and the MAC sublayer 352 and the RRC sublayer 306.

[0159] As an example, the first information is generated in the PHY sublayer 301 or the PHY sublayer 351.

[0160] As an example, the first information is generated in any one of the PHY sublayer 301 and the PHY sublayer 351 and the NAS sublayer 307.

[0161] As an example, the first information is generated in any one of the PHY sublayer 301 and the PHY sublayer 351 and the RRC sublayer 306.

[0162] Example 4

[0163] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in the appendix Figure 4 shown. The appendix Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 that communicate with each other in an access network.

[0164] The first communication device 410 includes a controller / processor 475, a memory 476, a receiving processor 470, a transmitting processor 416, a multi-antenna receiving processor 472, a multi-antenna transmitting processor 471, a transmitter / receiver 418, and an antenna 420.

[0165] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0166] In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functions of the L2 layer. In the DL (DownLink), the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation for the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communication device 450. The transmitting processor 416 and the multi-antenna transmitting processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmitting processor 416 implements encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, and constellation mapping based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmitting processor 471 performs digital space precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more parallel streams. The transmitting processor 416 then maps each parallel stream to subcarriers, multiplexes the modulated symbols with reference signals (e.g., pilots) in the time domain and / or frequency domain, and then uses the inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain O stream. Subsequently, the multi-antenna transmitting processor 471 performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmitting processor 471 into a radio frequency stream and then provides it to different antennas 420.

[0167] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives signals via its respective antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 perform various signal processing functions of the L1 layer. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receivers 454. The receive processor 456 uses the fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456, where the reference signal will be used for channel estimation, and the data signal recovers any parallel streams destined for the second communication device 450 after multi-antenna detection in the multi-antenna receive processor 458. The symbols on each parallel stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. Subsequently, the receive processor 456 decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. Subsequently, the upper layer data and control signals are provided to the controller / processor 459. The controller / processor 459 performs the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. In the DL, the controller / processor 459 provides demultiplexing between the transmission and the logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. Subsequently, the upper layer data packets are provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing. The controller / processor 459 is also responsible for error detection using the acknowledgment (ACK) and / or negative acknowledgment (NACK) protocols to support HARQ operations.

[0168] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to a controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the first communication device 410 described in DL, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communication device 410, and implements L2 layer functions for the user plane and the control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communication device 410. A transmit processor 468 performs modulation mapping and channel coding processing. A multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Subsequently, the transmit processor 468 modulates the generated parallel streams into multi-carrier / single-carrier symbol streams, and after passing through analog precoding / beamforming operations in the multi-antenna transmit processor 457, provides them to different antennas 452 via a transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and then provides it to the antenna 452.

[0169] In the transmission from the second communication device 450 to the first communication device 410, the functions at the first communication device 410 are similar to the receiving functions at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 jointly implement the functions of the L1 layer. A controller / processor 475 implements L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between the transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the second communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network. The controller / processor 475 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0170] As an example, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 is at least configured to: perform a cell reselection process based on network slicing; record first information; the first information is used to indicate information of a first network slice; the first network slice is requested in a first cell; the first cell is a resident cell after performing the cell reselection process based on network slicing; and send a first report, the first report including the first information.

[0171] As an example, the second communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: performing a cell reselection process based on network slicing; recording first information; the first information is used to indicate information of a first network slice; the first network slice is requested in a first cell; the first cell is a resident cell after performing the cell reselection process based on network slicing; and sending a first report, the first report including the first information.

[0172] As an example, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The first communication device 410 is at least configured to: send first signaling indicating that a first node records first information; wherein, the first information is used to indicate information of a first network slice; the first network slice is requested by the first node in a first cell; the first cell is a resident cell of the first node after performing the cell reselection process based on network slicing.

[0173] As an example, the first communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: sending first signaling indicating that a first node records first information; wherein, the first information is used to indicate information of a first network slice; the first network slice is requested by the first node in a first cell; the first cell is a resident cell of the first node after performing the cell reselection process based on network slicing.

[0174] As an example, the first node in the present application includes the second communication device 450.

[0175] As an example, the second node in the present application includes the first communication device 410.

[0176] As an example, some or all of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460} are used to receive the first signaling; some or all of {the antenna 420, the transmitter 418, the transmitting processor 416, the multi-antenna transmitting processor 471, the controller / processor 475} are used to send the first signaling.

[0177] As an example, some or all of {the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, the data source 467} are used to record the first information.

[0178] As an example, some or all of {the antenna 452, the transmitter 454, the transmitting processor 468, the multi-antenna transmitting processor 457, the controller / processor 459, the data source 467} are used to send the first information in the first report; some or all of {the antenna 420, the receiver 418, the receiving processor 470, the multi-antenna receiving processor 472, the controller / processor 475, the memory 476} are used to receive the first information in the first report.

[0179] Example 5

[0180] Embodiment 5 exemplifies a transmission flowchart between a first node N1 and a second node N2 according to an embodiment of the present application; as shown in the appendix Figure 5 shown. In the appendix Figure 5 the first node N1 and the second node N2 are communication nodes transmitted through an air interface, and the third node N3 has the same node type as the second node N2. In the appendix Figure 5 the steps in boxes F0 and F1 are optional. It should be noted that the sequence of the steps in the appendix Figure 5 is only a specific implementation manner, and on the premise of no conflict, the sequence of the steps can be adjusted; for example, the first signaling may be sent after the first node N1 records the first information, or there may be an overlap in the transmission time of the two.

[0181] For the second node N2, in step S5200, the first signaling is sent, and the first signaling instructs the first node to record the first information.

[0182] For the first node N1, a first signaling is received in step S5100, and the first signaling instructs the first node to record first information.

[0183] In Embodiment 5, the first information is used to indicate information of a first network slice; the first network slice is requested by the first node in a first cell; the first cell is a serving cell after the first node performs a cell reselection process based on the network slice.

[0184] As an embodiment, the first node N1 and the second node N2 are a user equipment and an access network device (e.g., the RAN device in Embodiment 2), respectively.

[0185] As an embodiment, the first node N1 and the second node N2 are a user equipment and a core network device (e.g., the core network device in Embodiment 2), respectively.

[0186] As an embodiment, the user equipment is a terminal.

[0187] As an embodiment, the second node N2 is: the access network device that the first node N1 was last connected to before performing the cell reselection process based on the network slice.

[0188] Typically but not restrictively, before the first node N1 performs the cell reselection process based on the network slice, the connected base station is gNB#1, and the first node N1 changes from the RRC connected state to the RRC idle state or the RRC inactive state at gNB#1, and the second node N2 is gNB#1.

[0189] Typically but not restrictively, before the first node N1 performs the cell reselection process based on the network slice, the connected base stations are gNB#1 and gNB#2 in sequence, and the first node N1 changes from the RRC connected state to the RRC idle state or the RRC inactive state at gNB#2, and the second node N2 is gNB#2.

[0190] As an embodiment, the second node N2 is: the access network device that manages the first cell.

[0191] As an embodiment, the second node N2 is: the core network device that the first node N1 was last connected to before performing the cell reselection process based on the network slice.

[0192] Typical but non - limiting, before the first node N1 executes the cell reselection process based on network slicing, the connected core network device is AMF#1. The first node N1 changes from the RRC connected state to the RRC idle state or the RRC inactive state at AMF#1, and the second node N2 is AMF#1.

[0193] Typical but non - limiting, before the first node N1 executes the cell reselection process based on network slicing, the connected core network devices are AMF#1 and AMF#2 in sequence. The first node N1 changes from the RRC connected state to the RRC idle state or the RRC inactive state at AMF#2, and the second node N2 is AMF#2.

[0194] As an embodiment, the second node N2 is: the core network device serving the first node.

[0195] As an embodiment, the first information includes information of the first network slice.

[0196] As an embodiment, the first information includes information of the first network slice and information of the network slice used in executing the cell reselection process based on network slicing.

[0197] As an embodiment, the first signaling indicates at least one of the following: the content included in the first information; the trigger condition for recording the first information. In this embodiment, the first signaling is also used to implicitly indicate that the first node N1 records the first information.

[0198] As an embodiment, the first signaling indicates that the content of the first information includes information of the first network slice.

[0199] As an embodiment, the first signaling indicates that the content of the first information includes information of the first network slice and information of the network slice used in executing the cell reselection process based on network slicing.

[0200] As an embodiment, the trigger condition for recording the first information includes at least one of the following: the first network slice service cannot be obtained in the first cell; the number of the first network slices is greater than a first threshold; the identification information of the first network slice meets a first preset value; the area information of the first cell meets a second preset value.

[0201] As an embodiment, that the first network slice service cannot be obtained in the first cell means at least one of the following: the first cell does not support the first network slice; the first cell does not allocate available resources for the first network slice.

[0202] As an example, the first node N1 determines, according to the NAS message, that the service of the first network slice cannot be obtained in the first cell.

[0203] Typically but not restrictively, the first node N1 determines that the first cell does not support the first network slice according to the registration acceptance message or the Registration Reject message; wherein, the first network slice is at least one of the following: the network slice indicated by the Rejected NSSAI; the network slice in the Partially Rejected NSSAI or the Partially Allowed NSSAI that is not supported by the TA of the first cell.

[0204] As an example, the first node N1 determines, according to the NAS message and the AS message, that the service of the first network slice cannot be obtained in the first cell.

[0205] Typically but not restrictively, the first node N1 determines, according to the S-NSSAI Location Validity Information cell in the registration acceptance message or the UE configuration update command message and the cell identifier of the first cell in the SIB1 message of the first cell, that the first cell does not allocate available resources for the first network slice; wherein, the first network slice is the network slice in the Allowed NSSAI or the Partially Allowed NSSAI, and the corresponding NS-AoS (Network Slice Area of Service) does not include the cell identifier of the first cell.

[0206] As an example, the first threshold is explicitly indicated by the second node N2 to the first node N1. How to explicitly indicate the first threshold is generally determined by the device vendor. Typically but not restrictively, the first threshold is indicated by a bit stream.

[0207] As a sub-example of the above example, the first threshold is configured by the OAM (Operation Administration and Maintenance) node to the second node N2.

[0208] As a sub-example of the above example, the first threshold is determined by the second node N2.

[0209] As a sub - embodiment of the above - mentioned embodiment, the first threshold is obtained by the second node N2 from the core network device connected to the first node N1.

[0210] As an embodiment, the first threshold is implicitly indicated by the second node N2 to the first node N1.

[0211] As a sub - embodiment of the above - mentioned embodiment, that the number of the first network slices is greater than the first threshold means that: in the case where the service of the first network slice cannot be obtained in the first cell, the number of the first network slices is greater than the number of the network slices that can obtain service in the first cell among the network slices requested by the first node N1.

[0212] As a sub - embodiment of the above - mentioned embodiment, that the number of the first network slices is greater than the first threshold means that: in the case where the service of the first network slice cannot be obtained in the first cell, the number of NSAGs associated with the first network slices is greater than the number of NSAGs associated with the network slices that can obtain service in the first cell among the network slices requested by the first node N1.

[0213] As a sub - embodiment of the above - mentioned embodiment, how to implicitly indicate that the number of the first network slices is greater than the first threshold is usually determined by the device vendor itself. For example, through bit - position information or enumeration - value information, etc. Typically but not restrictively, the first signaling includes 1 - bit information. The default value is indicated by "0" of the bit - position, and that the number of the first network slices is greater than the number of the network slices that can obtain service in the first cell among the network slices requested by the first node N1 is indicated by "1" of the bit - position; or, the first signaling includes 1 enumeration - value information (such as "Noservice more than in service"), and this enumeration - value information will be included in the first signaling only when implicit indication is required.

[0214] As an embodiment, that the identification information of the first network slice meets the first preset value means that: the identification information of the first network slice is the same as the first preset value.

[0215] Typically but not restrictively, the first preset value includes at least one of the following: a preset S - NSSAI; a preset NSAG ID; a preset SST (Slice / Service Type) value.

[0216] As a sub - embodiment of the above - mentioned embodiment, the first preset value is configured by the OAM node to the second node N2.

[0217] As a sub - embodiment of the above - mentioned embodiment, the first preset value is determined by the second node N2.

[0218] As a sub - embodiment of the above - mentioned embodiment, the first preset value is obtained by the second node N2 from the core network device connected to the first node N1.

[0219] As an embodiment, that the area information of the first network slice meets the second preset value means that the area information of the first network slice is the same as the second preset value.

[0220] Typical but non - restrictive, the second preset value includes at least one of the following: preset TA information (TAI / TAC); preset cell identifier; preset frequency point information.

[0221] As a sub - embodiment of the above - mentioned embodiment, the second preset value is configured by the OAM node to the second node N2.

[0222] As a sub - embodiment of the above - mentioned embodiment, the second preset value is determined by the second node N2.

[0223] As a sub - embodiment of the above - mentioned embodiment, the second preset value is obtained by the second node N2 from the core network device connected to the first node N1.

[0224] As an embodiment, the first signaling is an RRC message.

[0225] As an embodiment, the first signaling is an RRC Reconfiguration message.

[0226] As an embodiment, the first signaling is a LoggedMeasurementConfiguration message.

[0227] As an embodiment, the first signaling is a NAS message.

[0228] As an embodiment, the first signaling is a registration acceptance message.

[0229] As an embodiment, the first signaling is a UE configuration update command message.

[0230] The above - mentioned embodiment is beneficial to strengthening the network's control over the first node N1 and is beneficial for the network to obtain the information of interest for analyzing and optimizing the configuration or deployment of the NSAG for the cell reselection process.

[0231] For the first node N1, in the optional step S5101, it is determined that the trigger condition for recording the first information is met.

[0232] For the first node N1, record the first information in step S5102; the first information is used to indicate information of a first network slice; the first network slice is requested in a first cell; the first cell is a resident cell after performing the cell reselection process based on the network slice; in step S5103, send a first report, where the first report includes the first information.

[0233] For the third node N3, receive the first report in step S5301, where the first report includes the first information; in step S5302, determine the information of the first network slice based on the first information.

[0234] As an embodiment, the first node N1 and the third node N3 are respectively a user equipment and an access network device (such as the RAN device in Embodiment 2).

[0235] As an embodiment, the first node N1 and the third node N3 are respectively a user equipment and a core network device (such as the core network device in Embodiment 2).

[0236] As an embodiment, the user equipment is a terminal.

[0237] As an embodiment, the third node N3 and the second node N2 are the same node.

[0238] As an embodiment, the third node N3 and the second node N2 are two different nodes.

[0239] As an embodiment, the first node N1 unconditionally records information of the network slice requested after performing the cell reselection process based on the network slice.

[0240] The above embodiments are beneficial for assisting the network to adjust the configuration or deployment of the NSAG for the cell reselection process according to the network slice requested by the first node after performing the cell reselection process based on the network slice, which is not only beneficial to optimizing network resource allocation, but also can improve the efficiency of the first node performing the cell reselection based on the network slice.

[0241] As an embodiment, in response to meeting the triggering condition for recording the first information, record the first information.

[0242] As an embodiment, the content included in the first information is determined by the first node.

[0243] As an embodiment, the triggering condition for recording the first information is determined by the first node.

[0244] As an embodiment, the content included in the first information is determined according to the first signaling received in step S5100.

[0245] As an embodiment, the triggering condition for recording the first information is determined according to the first signaling received in step S5100.

[0246] As an embodiment, in the case where the first node N1 itself determines the content included in the first information, and the second node N2 also indicates to the first node N1 the content included in the first information through the first signaling, the first node N1 uses the content included in the first information indicated by the first signaling as the standard.

[0247] As an embodiment, in the case where the first node N1 itself determines the content included in the first information, and the second node N2 also indicates to the first node N1 the content included in the first information through the first signaling, the first node N1 uses the content included in the first information determined by itself as the standard.

[0248] As an embodiment, in the case where the first node N1 itself determines the triggering condition for recording the first information, and the second node N2 also indicates to the first node N1 the triggering condition for recording the first information through the first signaling, the first node N1 uses the triggering condition for recording the first information indicated by the first signaling as the standard.

[0249] As an embodiment, in the case where the first node N1 itself determines the triggering condition for recording the first information, and the second node N2 also indicates to the first node N1 the triggering condition for recording the first information through the first signaling, the first node N1 uses the triggering condition for recording the first information determined by itself as the standard.

[0250] As an embodiment, the first information is included in the first report.

[0251] As an embodiment, the first field of the first report indicates the first information.

[0252] As an embodiment, the first field of the first report includes at least one of the following sub-fields: information for indicating information of a first network slice; information of a network slice used in performing the cell reselection process based on the network slice.

[0253] As an embodiment, the first information is included in the first variable of the first report.

[0254] As an example, a second field in the first variable of the first report indicates the first information.

[0255] As an example, the second field in the first variable of the first report is set to the first information.

[0256] As an example, the second field in the first variable of the first report corresponds to the first field of the first report.

[0257] As an example, the second field in the first variable of the first report includes at least one of the following sub-fields: information for indicating information of a first network slice; information of a network slice used in performing the cell reselection process based on the network slice.

[0258] As an example, the first report sent by the first node includes the first information recorded in the first variable of the first report.

[0259] As an example, the first variable of the first report is VarLogMeasReport.

[0260] As an example, the first variable of the first report is VarMeasIdleReport.

[0261] As an example, the first variable of the first report is VarMeasReportList.

[0262] As an example, the first variable of the first report is VarRLF-Report.

[0263] As an example, the first variable of the first report is a variable newly added for the network slice.

[0264] As an example, the first variable of the first report is a variable newly added for cell reselection based on the network slice.

[0265] As an example, the first variable of the first report is a variable newly added for NSAG information used in cell reselection.

[0266] As an example, the first variable of the first report is a variable newly added for parameter configuration related to NSAG used in cell reselection.

[0267] As an example, after recording the first information, the first node N1 actively sends the first report to the third node N3.

[0268] As an example, the first report is sent by the first node N1 to the third node N3 immediately after the first node N1 records the first information.

[0269] As an example, the first report is sent by the first node N1 to the third node N3 after waiting for the expiration of a first timer after the first node N1 records the first information.

[0270] As an example, the first timer can be determined by the first node N1 itself, or can be configured for the first node N1 by the second node N2 or the third node N3.

[0271] As an example, in the case where the first node N1 determines the first timer itself and the second node N2 or the third node N3 also configures the first timer for the first node N1, the first node N1 uses the first timer configured by the second node N2 or the third node N3 as the standard.

[0272] As an example, in the case where the first node N1 determines the first timer itself and the second node N2 or the third node N3 also configures the first timer for the first node N1, the first node N1 uses the first timer determined by itself as the standard.

[0273] As an example, the first report is sent by the first node N1 to the third node N3 after the first node N1 records the first information as a response to obtaining the first information in a network request.

[0274] As an example, the first report is sent by the first node N1 to the third node N3 immediately after the first node N1 receives a network request for obtaining the first information.

[0275] As an example, the first report is sent by the first node N1 to the third node N3 after waiting for the expiration of a second timer after the first node N1 receives a network request for obtaining the first information.

[0276] As an example, the second timer can be determined by the first node N1 itself, or can be configured for the first node N1 by the third node N3.

[0277] As an example, in the case where the first node N1 determines the second timer itself and the third node N3 also configures the second timer for the first node N1, the first node N1 uses the second timer configured by the third node N3 as the standard.

[0278] As an example, when the first node N1 determines the second timer by itself and the third node N3 also configures the second timer for the first node N1, the first node N1 shall use the second timer determined by itself as the standard.

[0279] As an example, the first report is sent through an RRC message.

[0280] As an example, the first report is sent through a NAS message.

[0281] As an example, the first report is sent through both an RRC message and a NAS message.

[0282] Example 6

[0283] Example 6 exemplifies a flowchart for determining whether to trigger recording the first information according to the number of the first network slices under the condition that the service of the first network slice cannot be obtained in the first cell according to an embodiment of the present application, as shown in the appendix Figure 6 as follows.

[0284] In Example 6, the triggering condition for the first node to record the first information is that when the service of the first network slice cannot be obtained in the first cell, the number of the first network slices is greater than a first threshold.

[0285] The first node determines in step S601 whether the service of the first network slice can be obtained in the first cell. If not, it proceeds to step S602; if so, it ends. In step S602, it determines whether the number of the first network slices is greater than the first threshold. If it is greater, it proceeds to step S603; if not, it ends. In step S603, the first information is recorded.

[0286] As an example, the first node and the second node are respectively a user equipment and an access network device (such as the RAN device in Example 2).

[0287] As an example, the first node and the second node are respectively a user equipment and a core network device (such as the core network device in Example 2).

[0288] As an example, the user equipment is a terminal.

[0289] As an example, that the service of the first network slice cannot be obtained in the first cell means at least one of the following: the first cell does not support the first network slice; the first cell does not allocate available resources for the first network slice.

[0290] As an embodiment, the first threshold is pre-configured for the first node.

[0291] As an embodiment, the first threshold is determined by the first node.

[0292] As an embodiment, the first threshold is configured for the first node by the second node through the first signaling.

[0293] As a sub-embodiment of the above embodiment, the first threshold is configured for the second node by OAM.

[0294] As a sub-embodiment of the above embodiment, the first threshold is determined by the second node.

[0295] As a sub-embodiment of the above embodiment, the first threshold is obtained by the second node from the core network device connected to the first node.

[0296] As an embodiment, the number of the first network slices being greater than the first threshold means that: the number of the first network slices is greater than the value set for the first threshold.

[0297] Typically but not restrictively, the value set in the first threshold is M, and M is a positive integer less than or equal to 8.

[0298] As an embodiment, the number of the first network slices being greater than the first threshold means that: the number of the first network slices is greater than the number of network slices that can obtain services in the first cell among the network slices requested by the first node.

[0299] As an embodiment, the number of the first network slices being greater than the first threshold means that: the number of NSAGs associated with the first network slices is greater than the number of NSAGs associated with the network slices that can obtain services in the first cell among the network slices requested by the first node.

[0300] Typically but not restrictively, the first network slice is: the network slice indicated by the RejectedNSSAI of the first node in the first cell; the network slices that can obtain services in the first cell among the network slices requested by the first node are: the network slices indicated by the AllowedNSSAI of the first node in the first cell.

[0301] Typically but not restrictively, the first network slice is: the network slice corresponding to the NS-AoS in the network slices indicated by the AllowedNSSAI of the first node in the first cell that does not include the cell identifier of the first cell; the network slice that can obtain services in the first cell among the network slices requested by the first node is: the network slices other than the first network slice in the network slices indicated by the Allowed NSSAI of the first node in the first cell.

[0302] Example 7

[0303] Embodiment 7 exemplifies a flowchart of how to determine whether to trigger recording of the first information under the condition that the identification information of the first network slice meets a first preset value and the area information of the first cell meets a second preset value, as shown in the appendix Figure 7 as follows.

[0304] In Embodiment 7, the triggering condition for the first node to record the first information is: the identification information of the first network slice meets a first preset value, and the area information of the first cell meets a second preset value.

[0305] In step S701, the first node determines whether the identification information of the first network slice meets the first preset value. If it meets, step S702 is executed; if it does not meet, the process ends. In step S702, it is determined whether the area information of the first cell meets the second preset value. If it meets, step S703 is executed; if it does not meet, the process ends. In step S703, the first information is recorded.

[0306] It should be noted that the sequence relationship of the steps in the appendix Figure 7 is only a specific implementation manner. On the premise of no conflict, the sequence relationship between the steps can be adjusted; for example, the first node can first execute step S702 to determine whether the area information of the first cell meets the second preset value, and then execute step S701 to further determine whether the identification information of the first network slice meets the first preset value under the condition that the above conditions are met.

[0307] As an embodiment, the first node and the second node are respectively a user equipment and an access network device (such as the RAN device in Embodiment 2).

[0308] As an embodiment, the first node and the second node are respectively a user equipment and a core network device (such as the core network device in Embodiment 2).

[0309] As an embodiment, the user equipment is a terminal.

[0310] As an embodiment, at least one of the first preset value and the second preset value is pre-configured for the first node.

[0311] As an embodiment, at least one of the first preset value and the second preset value is determined by the first node.

[0312] As an embodiment, at least one of the first preset value and the second preset value is configured for the first node by the second node through the first signaling.

[0313] As a sub-embodiment of the above embodiment, at least one of the first preset value and the second preset value is configured for the second node by OAM.

[0314] As a sub-embodiment of the above embodiment, at least one of the first preset value and the second preset value is determined by the second node.

[0315] As a sub-embodiment of the above embodiment, at least one of the first preset value and the second preset value is obtained by the second node from the core network device connected to the first node.

[0316] Typically but not restrictively, the first preset value is at least one of the following: a specific S-NSSAI; a specific NSAG ID; a specific SST value.

[0317] Typically but not restrictively, the second preset value is at least one of the following: a specific TAC; a specific TAI; a specific NCGI.

[0318] Example 8

[0319] Embodiment 8 exemplifies a schematic diagram of the first information in the case where the first node unconditionally records the first network slice according to an embodiment of the present application, as shown in the appendix Figure 8 as shown.

[0320] In Embodiment 8, the first node unconditionally records the information of the network slice requested in the first cell.

[0321] As an embodiment, the first node and the second node are respectively a user equipment and an access network device (such as the RAN device in Embodiment 2).

[0322] As an embodiment, the first node and the second node are respectively a user equipment and a core network device (such as the core network device in Embodiment 2).

[0323] As an embodiment, the user equipment is a terminal.

[0324] As an embodiment, the content included in the first information is pre-configured for the first node.

[0325] As an embodiment, the content included in the first information is determined by the first node.

[0326] As an embodiment, the content included in the first information is configured for the first node by the second node through the first signaling.

[0327] As a sub-embodiment of the above embodiment, the content included in the first information is configured for the second node by OAM.

[0328] As a sub-embodiment of the above embodiment, the content included in the first information is determined by the second node.

[0329] As a sub-embodiment of the above embodiment, the content included in the first information is obtained by the second node from the core network device connected to the first node.

[0330] As an embodiment, the first information displays information indicating the first network slice.

[0331] As an embodiment, the first information implicitly indicates information of the first network slice.

[0332] As an embodiment, the first information further includes information of the network slice used in performing the cell reselection process based on the network slice.

[0333] Typically but not limited to, the first information is the RequestedNSSAI of the first node.

[0334] Typically but not limited to, the first information is the AllowedNSSAI and RejectedNSSAI of the first node.

[0335] Typically but not limited to, the first information is the RequestedNSSAI of the first node, and bitmap information used to indicate whether the network slice corresponding to each S-NSSAI in the Requested NSSAI can provide services for the first node in the first cell.

[0336] Typically but not limited to, the first information is the NSAG ID associated with the RequestedNSSAI of the first node.

[0337] Typically but not limited thereto, the first piece of information is 1-bit information. A "0" in the bit indicates that the cell reselection process based on network slices has not been performed, and a "1" in the bit indicates that the cell reselection process based on network slices has been performed.

[0338] Typically but not limited thereto, the first piece of information is an enumerated value (such as "Performed Slice-based Cell reselection") for indicating that the cell reselection process based on network slices has been performed.

[0339] Typically but not limited thereto, the first piece of information is the RequestedNSSAI of the first node and the NSSAI indicated by the NAS of the first node for the cell reselection process.

[0340] Typically but not limited thereto, the first piece of information is the NSAG ID associated with the RequestedNSSAI of the first node and the NSAG ID of the NSAG used when performing the cell reselection evaluation based on network slices.

[0341] As an embodiment, the network adjusts the configuration or deployment of the NSAG for cell reselection according to the first piece of information.

[0342] Typically but not limited thereto, when the network determines that there is a network slice in the first network slice that is not associated with any NSAG, the network may configure an associated NSAG for the network slice that is not associated with any NSAG.

[0343] Typically but not limited thereto, when the network determines that there is a network slice in the first network slice with a low usage frequency during the cell reselection process of the network slice, the network may remove the NSAG for cell reselection associated with the network slice with the low usage frequency.

[0344] Typically but not limited thereto, when the network determines that there is a network slice in the first network slice with a low usage frequency during the cell reselection process of the network slice, the network may not include the parameters for cell reselection based on network slices associated with the network slice with the low usage frequency in the SIB16 message or the RRC release message.

[0345] In the above embodiments, the network analyzes and optimizes the configuration or deployment of the NSAG for cell reselection based on the first piece of information, which is beneficial to improving the rational utilization of network resources and the efficiency of the UE's cell reselection process based on network slices.

[0346] Example 9

[0347] Embodiment 9 exemplifies a schematic diagram of the first information as a response to the inability to obtain the service of the first network slice in the first cell according to an embodiment of the present application, as shown in the appendix Figure 9 as shown

[0348] In Embodiment 9, the first network slice is a network slice that cannot provide services for the first node among the network slices requested by the first node in the first cell.

[0349] As an embodiment, the first node and the second node are a user equipment and an access network device (e.g., the RAN device in Embodiment 2), respectively.

[0350] As an embodiment, the first node and the second node are a user equipment and a core network device (e.g., the core network device in Embodiment 2), respectively.

[0351] As an embodiment, the user equipment is a terminal.

[0352] As an embodiment, at least one of the content included in the first information and the trigger condition for recording the first information is pre-configured for the first node.

[0353] As an embodiment, at least one of the content included in the first information and the trigger condition for recording the first information is determined by the first node.

[0354] As an embodiment, at least one of the content included in the first information and the trigger condition for recording the first information is configured for the first node by the second node through the first signaling.

[0355] As a sub-embodiment of the above embodiment, at least one of the content included in the first information and the trigger condition for recording the first information is configured for the second node by OAM.

[0356] As a sub-embodiment of the above embodiment, at least one of the content included in the first information and the trigger condition for recording the first information is determined by the second node.

[0357] As a sub-embodiment of the above embodiment, at least one of the content included in the first information and the trigger condition for recording the first information is obtained by the second node from the core network device to which the first node is connected.

[0358] As an embodiment, the first information is used to indicate information about the first network slice, including at least one of the following: information about network slices not supported by the first cell; information about network slices without available resources in the first cell.

[0359] As an embodiment, the first information display indicates information about the first network slice.

[0360] As an embodiment, the first information implicitly indicates information about the first network slice.

[0361] As an embodiment, the first information further includes information about the network slice used in performing the cell reselection process based on the network slice.

[0362] Typically but not restrictively, the first information is the RejectedNSSAI of the first node.

[0363] Typically but not restrictively, the first information is the NSAG ID associated with the RejectedNSSAI of the first node.

[0364] Typically but not restrictively, the first information is the NSSAI in the AllowedNSSAI for which the corresponding NS-AoS does not include the cell identifier of the first cell.

[0365] Typically but not restrictively, the first information is the NSAG ID associated with the NSSAI in the AllowedNSSAI for which the corresponding NS-AoS does not include the cell identifier of the first cell.

[0366] Typically but not restrictively, the first information is 1-bit information. A "0" in the bit indicates that the cell reselection process based on the network slice has not been performed, and a "1" in the bit indicates that the cell reselection process based on the network slice has been performed.

[0367] Typically but not restrictively, the first information is 1 2-bit bitmap information. A "0" in the first bit indicates that the cell reselection process based on the network slice has not been performed, and a "1" indicates that the cell reselection process based on the network slice has been performed; a "0" in the second bit indicates that the determined first network slice is a network slice not supported in the requested network slices, and a "1" indicates that the determined first network slice is a network slice without available resources in the requested network slices.

[0368] Typically but not restrictively, the first information is the RejectedNSSAI of the first node and the NSSAI indicated by the NAS of the first node for the cell reselection process.

[0369] Typically but not restrictively, the first information is the NSAG ID associated with the RejectedNSSAI of the first node, and the NSAG ID of the NSAG used when performing the network slice-based cell reselection evaluation.

[0370] Typically but not restrictively, the first information is the NSAG ID and NSAG priority associated with the RejectedNSSAI of the first node, and the NSAG ID and NSAG priority of the NSAG used when performing the network slice-based cell reselection evaluation.

[0371] As an embodiment, the network adjusts the configuration or deployment of the NSAG for cell reselection according to the first information.

[0372] Typically but not restrictively, the network may configure the first cell to support the first network slice.

[0373] Typically but not restrictively, the network may configure the first cell to allocate available resources for the first network slice.

[0374] Typically but not restrictively, the network may remove the NSAG associated with the first network slice.

[0375] Typically but not restrictively, the network may not include the parameters for network slice-based cell reselection associated with the first network slice in the SIB16 message or the RRC release message.

[0376] Typically but not restrictively, the network may adjust the value of the NSAG priority of the NSAG associated with the first network slice to be higher than the value of the NSAG priority of the NSAG used when performing the network slice-based cell reselection evaluation.

[0377] In the above embodiments, the network analyzes and optimizes the configuration or deployment of the NSAG for cell reselection based on the first information, which is beneficial to improving the rational utilization of network resources and the success rate of the UE requesting a network slice after performing the network slice-based cell reselection process.

[0378] Example 10

[0379] Embodiment 10 exemplifies a flowchart of implicitly indicating the information of the first network slice according to the first information of an embodiment of the present application, as shown in the appendix Figure 10 shown. In the appendix Figure 10 the steps in block F0 are optional.

[0380] In Embodiment 10, the first information recorded by the first node N1 is used to indicate that the cell reselection process based on network slicing has been performed.

[0381] As an embodiment, the first node N1 and the third node N3 are a user equipment and an access network device (e.g., the RAN device in Embodiment 2), respectively.

[0382] As an embodiment, the third node N3 manages the first cell.

[0383] As an embodiment, the user equipment is a terminal.

[0384] For the first node N1, the trigger condition for recording the first information is determined in step S10100; the first information is recorded in step S10101; and the first report is sent in step S10102.

[0385] For the third node N3, the first report is received in step S10301; and the information of the first network slice is determined based on the first information and the Requested NSSAI in S10302.

[0386] As an embodiment, for how to determine the trigger condition for recording the first information in step S10100, refer to step S5101 in Embodiment 5.

[0387] Typical but non-limiting, for how to determine the trigger condition for recording the first information in step S10100, refer to Embodiment 6.

[0388] Typical but non-limiting, for how to determine the trigger condition for recording the first information in step S10100, refer to Embodiment 7.

[0389] As an embodiment, the third node N3 determines the information of the first network slice based on the first information and the Requested NSSAI means that: when the third node N3 determines that the first node N1 has performed the cell reselection process based on network slicing, the Requested NSSAI received through the MSG5 message (such as the RRC Setup Complete message) is determined as the information of the first network slice.

[0390] As an example, the third node N3 determines the information of the first network slice based on the first information and the Requested NSSAI, which means that when the third node N3 determines that the first node N1 has performed the cell reselection process based on network slices, the NSAG information of the NSAG for cell reselection associated with the Requested NSSAI received through the MSG5 message (such as the RRC Setup Complete message) is determined as the information of the first network slice.

[0391] As an example, the third node N3 determines the information of the first network slice based on the first information and the Requested NSSAI, which means that when the third node N3 determines that the first node N1 has performed the cell reselection process based on network slices and there is a requested network slice not supported by the third node N3, the NSSAI corresponding to the network slice that is not supported among the network slices indicated by the Requested NSSAI received through the MSG5 message (such as the RRC Setup Complete message) is determined as the information of the first network slice.

[0392] As an example, the third node N3 determines the information of the first network slice based on the first information and the Requested NSSAI, which means that when the third node N3 determines that the first node N1 has performed the cell reselection process based on network slices and there is an NSAG for cell reselection associated with the requested network slice not supported by the third node N3, the NSAG information of the NSAG for cell reselection associated with the network slice that is not supported among the network slices indicated by the Requested NSSAI received through the MSG5 message (such as the RRC Setup Complete message) is determined as the information of the first network slice.

[0393] As an example, the third node N3 determines the information of the first network slice based on the first information and the Requested NSSAI, which means that when the third node N3 determines that the first node N1 has performed the cell reselection process based on network slices and there is no available resource for the requested network slice in the first cell, the NSSAI corresponding to the network slice that has no available resource in the first cell among the network slices indicated by the Requested NSSAI received through the MSG5 message (such as the RRC Setup Complete message) is determined as the information of the first network slice.

[0394] As an embodiment, the third node N3 determines the information of the first network slice based on the first information and the Requested NSSAI, which means that when the third node N3 determines that the first node N1 has performed the cell reselection process based on network slices and there are no available resources for the requested network slices in the first cell, it will determine the NSAG information of the NSAG associated with the network slice without available resources in the first cell among the network slices indicated by the Requested NSSAI received through the MSG5 message (such as the RRC connection setup complete message) as the information of the first network slice.

[0395] As an embodiment, the information of the first network slice further includes the area information of the first cell.

[0396] Example 11

[0397] Embodiment 11 exemplifies a structural block diagram of a processing device in a first node according to an embodiment of the present application; as shown in the appendix Figure 11 shown. In the appendix Figure 11 the processing device 1100 in the first node includes a first processor 1101.

[0398] The first processor 1101 performs the cell reselection process based on network slices; records the first information; the first information is used to indicate the information of the first network slice; the first network slice is requested in the first cell; the first cell is the resident cell after performing the cell reselection process based on network slices; and sends a first report, where the first report includes the first information.

[0399] As an embodiment, the first information includes the information of the network slice used in the cell reselection process based on network slices.

[0400] As an embodiment, the triggering conditions for recording the first information include at least one of the following: the service of the first network slice cannot be obtained in the first cell; the number of the first network slices is greater than a first threshold; the identification information of the first network slice meets a first preset value; the area information of the first cell meets a second preset value.

[0401] As an embodiment, the first processor 1101 receives a first signaling that indicates recording the first information.

[0402] As an embodiment, the first signaling indicates at least one of the following: the content included in the first information; the triggering conditions for recording the first information.

[0403] As an example, the first node is a user equipment.

[0404] As an example, the user equipment is a terminal.

[0405] As an example, the first node is a relay node device.

[0406] As an example, the first processor 1101 includes {antenna 452, receiver / transceiver 454, receive processor 456, multi-antenna receive processor 458, controller / processor 459, memory 460, data source 467} in Embodiment 4.

[0407] As an example, the first processor 1101 includes {antenna 452, receiver / transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, data source 467} in Embodiment 4.

[0408] Example 12

[0409] Embodiment 12 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application; as shown in the appendix Figure 12 shown. In the appendix Figure 12 the processing device 1200 in the second node includes a second processor 1201.

[0410] The second processor 1201 sends a first signaling, and the first signaling instructs the first node to record first information; wherein, the first information is used to indicate information of a first network slice; the first network slice is requested by the first node in a first cell; the first cell is a resident cell of the first node after performing the cell reselection process based on the network slice.

[0411] As an example, the first information includes information of the network slice used in the cell reselection process based on the network slice.

[0412] As an example, the first signaling instructs at least one of the following: content included in the first information; a trigger condition for recording the first information.

[0413] As an example, the trigger condition for recording the first information includes at least one of the following: the first network slice service cannot be obtained in the first cell; the number of the first network slices is greater than a first threshold; the identification information of the first network slice meets a first preset value; the area information of the first cell meets a second preset value.

[0414] As an example, a first report is received, and the first report includes the first information.

[0415] As an embodiment, the information of the first network slice is determined based on the first information.

[0416] As an embodiment, the second node is a base station device.

[0417] As an embodiment, the second node is a user equipment.

[0418] As an embodiment, the user equipment is a terminal.

[0419] As an embodiment, the second node is a relay node device.

[0420] As an embodiment, the second processor 1201 includes {antenna 420, receiver / transmitter 418, transmit processor 416, multi-antenna transmit processor 471, controller / processor 475, memory 476} in Embodiment 4.

[0421] As an embodiment, the second processor 1201 includes {antenna 420, receiver / transmitter 418, receive processor 470, multi-antenna receive processor 472, controller / processor 475, memory 476} in Embodiment 4.

[0422] Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disc, etc. Optionally, all or part of the steps of the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in the form of hardware or in the form of a software function module. This application is not limited to any specific form of the combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control airplanes, aircraft, small airplanes, mobile phones, tablet computers, laptops, vehicle-mounted communication devices, transportation means, vehicles, RSU, wireless sensors, network cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers, and other wireless communication devices. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNB, gNB, TRP (Transmitter Receiver Point), GNSS, relay satellites, satellite base stations, aerial base stations, RSU (Road Side Unit), unmanned aerial vehicles, test equipment, such as transceiver devices or signaling testers that simulate some functions of base stations, and other wireless communication devices.

[0423] Those skilled in the art should understand that the present invention can be implemented in other specified forms without departing from its core or basic characteristics. Therefore, the currently disclosed embodiments should be regarded as descriptive rather than restrictive in any case. The scope of the invention is determined by the appended claims rather than the previous description, and all modifications within the equivalent meaning and scope are considered to be included therein.

Claims

1. A method for a terminal used for wireless communication, characterized in that: include: Performing a cell reselection process based on network slicing; Recording the first information; The first information is used to indicate information of the first network slice; The first network slice is requested in a first cell; The first cell is a resident cell after performing the cell reselection process based on network slicing; A first report is sent, wherein the first report includes the first information.

2. The method according to claim 1, characterized in that: include: The first information includes information about the network slice used in performing the network slice-based cell reselection process.

3. The method according to claim 1 or 2, characterized in that: The triggering condition for recording the first information includes at least one of the following: A service of the first network slice cannot be obtained in the first cell; The number of the first network slices is greater than a first threshold; The identification information of the first network slice satisfies a first preset value; The area information of the first cell meets a second preset value.

4. The method according to any one of claims 1 to 3, characterized in that: include: A first signaling is received, where the first signaling instructs recording of the first information.

5. The method according to claim 4, characterized in that The first signaling indicates at least one of the following: The first information includes content; The triggering condition of the first information is recorded.

6. A terminal used for wireless communication, characterized in that: include: The first node includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the first node to perform the method according to any one of claims 1 to 5.

7. A method for a base station used for wireless communication, characterized in that: include: Sending a first signaling, where the first signaling instructs the first node to record the first information; Among them, the first information is used to indicate information of the first network slice; the first network slice is requested by the first node in the first cell; the first cell is the resident cell after the first node performs the cell reselection process based on the network slice.

8. The method according to claim 7, characterized in that include: The first information includes information about the network slice used in performing the network slice-based cell reselection process.

9. The method according to claim 7 or 8, characterized in that: The first signaling indicates at least one of the following: The first information includes content; Record the triggering condition of the first information.

10. The method according to claim 9, characterized in that The triggering condition for recording the first information includes at least one of the following: A service of the first network slice cannot be obtained in the first cell; The number of the first network slices is greater than a first threshold; The identification information of the first network slice satisfies a first preset value; The area information of the first cell meets a second preset value.

11. The method according to any one of claims 7 to 10, characterized in that include: A first report is received, the first report including the first information.

12. The method according to claim 11, characterized in that include: Determine information of the first network slice based on the first information.

13. A base station used for wireless communication, characterized in that: include: The second node includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the second node to execute the method according to any one of claims 7 to 12.

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