Communication method and device

Abstract

The invention discloses a communication method and device, and relates to the field of communication. The communication method can improve the flexibility of NTN cell access and residence, and comprises the following steps: receiving first information used for indicating whether an area or a beam in a cell is allowed to access or reside, and determining whether to access or reside in the cell according to the first information.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a communication method and device. Background Art

[0002] Non-terrestrial network (NTN) is a general term for networks involving flying objects, including satellite communication networks, high altitude platform stations (HAPS), etc. NTN can provide reliable mobile broadband services for high-demand communication scenarios (for example, areas with poor terrestrial communication coverage, marine communications, public safety communication, aircraft-to-aircraft communications, and railway communications).

[0003] In NTN, due to the imperfect network configuration, the current NTN cell access and residency flexibility is poor. Summary of the invention

[0004] The present application provides a communication method and device, which can improve the flexibility of NTN cell access and residence.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, a communication method is provided, which is applied to a terminal. The execution subject of the method can be a terminal device, or a component or device (such as a processor, a chip, or a chip system, etc.) applied to the terminal device, or a logic module or software that can implement all or part of the functions of the terminal device. The method includes: receiving first information indicating whether an area or beam in a cell is allowed to access or reside, and determining whether to access or reside in the cell according to the first information.

[0007] In the first aspect, the access network device sends first information to the terminal indicating whether an area or beam in the cell allows access or residence. The terminal can determine access at an area granularity or a beam granularity based on the first information, thereby achieving higher-precision cell access or residence control, and the cell access or residence control has greater flexibility.

[0008] In one possible implementation, determining whether to access or reside in a cell based on the first information includes: determining to access or reside in the cell when the first information indicates that a target area where the terminal is located in the cell or a target beam where the terminal is located in the cell allows access or residency.

[0009] In this implementation, the terminal access to the cell is controlled at the granularity of the area or beam, thereby achieving higher-precision cell access or residency control, and the cell access or residency control has greater flexibility.

[0010] In a possible implementation, the first information is cell prohibition indication information, which indicates whether an area or a beam in a cell is prohibited, or the first information is unified access control information.

[0011] In this implementation, two possible forms of the first information are designed. When the first information is cell prohibition indication information, the method can control the terminal to access or reside in the cell based on the cell prohibition indication information. When the first information is unified access control information, the method can control the terminal to access or reside in the cell based on the unified access control information. It should be understood that the two scenarios are two stages of control, which can be used in combination in an actual system.

[0012] In a possible implementation, when the first information is cell barring indication information, the method may further include: receiving second information indicating whether the cell is barred, and determining whether to access or reside in the cell according to the first information when the second information indicates that the cell is not barred.

[0013] In this implementation, based on whether the second information indicates that the cell is prohibited, the terminal determines whether to access or stay in the cell based on the first information when the second information indicates that the cell is not prohibited, which can reduce the terminal computing power overhead.

[0014] In one possible implementation, when the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

[0015] In this implementation, the first information only includes identification information of the area or beam where access or residence is allowed, so that the overhead required to transmit the first information is small. Alternatively, the first information only includes identification information of the area or beam where access or residence is prohibited, so that the overhead required to transmit the first information is small. Alternatively, the first information indicates identification information of the area or beam and whether the corresponding area or beam is prohibited, so that the first information indicates whether the area or beam is prohibited more comprehensively. Alternatively, each bit in the first information corresponds to an area or beam respectively, and indicates whether the corresponding area or beam is prohibited based on the information carried by each bit. Under the premise that the overhead required for the first signaling is small, it is possible to indicate globally whether an area or beam is prohibited.

[0016] In a possible implementation, the first information is unified access control information, and the method may further include: receiving unified access control information of a cell, and determining whether to allow access to or stay in the cell according to the first information and the unified access control information of the cell.

[0017] In this implementation, UAC information of a cell is received, and whether access to or stay in the cell is allowed is determined based on the first information and the UAC information of the cell, thereby reducing the sending of repeated information in the UAC information of the cell and the first information and reducing signaling overhead.

[0018] In a possible implementation, the first information includes identification information of an area or beam in a cell and corresponding unified access control information.

[0019] In one possible implementation, the cell is a non-terrestrial network cell.

[0020] In the first aspect and its various possible implementations, starting from improving the flexibility of cell access / residence indication, a corresponding communication method is designed for the possible division mechanism of indication granularity (division by region or by beam) and the possible form of high-granularity access / residence indication information (cell bar or UAC information) indicated by the access network device to the terminal, so as to achieve high-precision cell access or residence control. Specifically, by distinguishing different cell prohibition indication information (or UAC information) for different regions / beams, it is possible to accurately control whether the terminal in the relevant area can reside / access the cell according to the load or other requirements in the actual geographical area, so as to avoid unnecessary access restrictions on terminals in irrelevant areas, thereby improving the flexibility of cell access or residence control and optimizing the user experience.

[0021] In a second aspect, a communication method is provided, which is applied to an access network device, and the execution subject of the method can be an access network device, or a component (such as a processor, a chip, or a chip system, etc.) applied to the access network device, or a logic module or software that can realize all or part of the functions of the access network device. It includes: sending first information indicating whether an area or beam in a cell is allowed to access or reside.

[0022] In the second aspect, the access network device sends first information to the terminal indicating whether an area or beam in the cell allows access or residence, so that the terminal can determine access at an area granularity or a beam granularity based on the first information, thereby achieving higher-precision cell access or residence control, and the cell access or residence control has greater flexibility.

[0023] In a possible implementation, the method further includes: determining first information indicating whether an area or a beam in the cell allows access or stay.

[0024] In a possible implementation, the first information is cell prohibition indication information, which indicates whether an area or a beam in a cell is prohibited, or the first information is unified access control information.

[0025] In this implementation, two possible forms of the first information are designed to improve the versatility of cell access or residence.

[0026] In a possible implementation, the first information is cell barring indication information, and the method further includes: sending second information, wherein the second information is used to indicate whether the cell is barred.

[0027] In this implementation, whether the cell is prohibited is indicated based on the second information, so that the terminal can determine whether to access or stay in the cell based on the first information based on the second information, thereby reducing the computing power overhead of the terminal.

[0028] In one possible implementation, when the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

[0029] In this implementation, the first information only includes identification information of the area or beam where access or residence is allowed, so that the overhead required to transmit the first information is small. Alternatively, the first information only includes identification information of the area or beam where access or residence is prohibited, so that the overhead required to transmit the first information is small. Alternatively, the first information indicates identification information of the area or beam and whether the corresponding area or beam is prohibited, so that the first information indicates whether the area or beam is prohibited more comprehensively. Alternatively, each bit in the first information corresponds to an area or beam respectively, and indicates whether the corresponding area or beam is prohibited based on the information carried by each bit. Under the premise that the overhead required for the first signaling is small, it is possible to indicate globally whether an area or beam is prohibited.

[0030] In a possible implementation, the first information is unified access control information, and the method may further include: sending the unified access control information of the cell.

[0031] In this implementation, the UAC information of the cell is sent to the terminal, so that the terminal can determine whether to allow access to or stay in the cell based on the UAC information of the cell, thereby reducing the sending of repeated information in the UAC information of the cell and the first information, and reducing signaling overhead.

[0032] In a possible implementation, the first information includes identification information of an area or beam in a cell and corresponding unified access control information.

[0033] In one possible implementation, the first information indicates whether a beam in a cell is allowed to access or reside, and the first information includes collective indication information, which indicates whether different beams are allowed to access or reside respectively; sending the first information includes: sending the collective indication information in all beams.

[0034] In this implementation, the same first information is sent in each beam, and the system information corresponding to different beams is consistent, so that the terminal can merge the system information across beams, thereby obtaining a merging gain.

[0035] In one possible implementation, the first information indicates whether a beam in a cell is allowed to access or reside, the first information includes multiple beam-level indication information, different beams correspond to different beam-level indication information, and the beam-level indication information indicates whether the beam corresponding to the beam indication information is allowed to access or reside; sending the first information includes: sending the beam-level indication information corresponding to the beam to the beam.

[0036] In this implementation, the access network device sends beam-level indication information corresponding to the beam in the beam, which can implement access / residence indication with beam granularity.

[0037] In one possible implementation, the cell is a non-terrestrial network cell.

[0038] In the second aspect and its various possible implementations, starting from improving the flexibility of cell access / residence indication, a corresponding communication method is designed for the possible division mechanism of indication granularity (division by region or by beam) and the possible form of high-granularity access / residence indication information (cell bar or UAC information) indicated by the access network device to the terminal, so as to achieve high-precision cell access or residence control. Specifically, by distinguishing different cell prohibition indication information (or UAC information) for different regions / beams, it is possible to accurately control whether the terminal in the relevant area can reside / access the cell according to the load or other requirements in the actual geographical area, so as to avoid unnecessary access restrictions on terminals in irrelevant areas, improve the flexibility of cell access or residence control, and thus optimize the user experience.

[0039] In a third aspect, a communication device is provided, which may be a terminal or a chip or system on chip in the terminal. The communication device may implement the functions performed by the terminal in the first aspect or the possible design of the first aspect, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes: a transceiver module for receiving first information, wherein the first information is used to indicate whether an area or beam in a cell is allowed to access or reside; a processing module for determining whether to access or reside in a cell according to the first information.

[0040] In one possible implementation, the processing module is specifically used to: determine the access or residence cell when the first information indicates that the target area or target beam allows access or residence; wherein the target area is the area where the terminal is located in the cell, and the target beam is the beam where the terminal is located in the cell.

[0041] In a possible implementation, the first information is cell prohibition indication information, which indicates whether an area or a beam in a cell is prohibited, or the first information is unified access control information.

[0042] In one possible implementation, when the first information is cell prohibition indication information, the transceiver module is also used to receive second information, wherein the second information is used to indicate whether the cell is prohibited; the processing module is specifically used to determine whether to access or stay in the cell according to the first information when the second information indicates that the cell is not prohibited.

[0043] In one possible implementation, when the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

[0044] In a possible implementation, when the first information is unified access control information, the transceiver module is also used to receive the unified access control information of the cell; the processing module is specifically used to determine whether to allow access or stay in the cell based on the first information and the unified access control information of the cell.

[0045] In a possible implementation, the first information includes identification information of an area or beam in a cell and corresponding unified access control information.

[0046] In one possible implementation, the cell is a non-terrestrial network cell.

[0047] In a fourth aspect, a communication device is provided, which may be an access network device or a chip or system on chip in the access network device. The communication device may implement the functions performed by the access network device in the second aspect or a possible design of the second aspect, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions, for example, the communication device includes: a transceiver module for sending first information; wherein the first information indicates whether an area or beam in a cell is allowed to access or reside.

[0048] In a possible implementation, the communication device further includes: a processing module, configured to determine the first information.

[0049] In a possible implementation, the first information is cell prohibition indication information, which indicates whether an area or a beam in a cell is prohibited, or the first information is unified access control information.

[0050] In a possible implementation, when the first information is cell barring indication information, the transceiver module is further used to send second information, wherein the second information is used to indicate whether the cell is barred.

[0051] In one possible implementation, when the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

[0052] In a possible implementation, when the first information is unified access control information, the transceiver module is further configured to send the unified access control information of the cell.

[0053] In a possible implementation, the first information includes identification information of an area or beam in a cell and corresponding unified access control information.

[0054] In a possible implementation, when the first information indicates whether a beam in a cell is allowed to access or reside, the first information includes collective indication information, and the collective indication information includes prohibition indication information corresponding to different beams respectively; the transceiver module is specifically used to send the collective indication information to all beams. Alternatively, the first information includes multiple beam-level indication information, different beams correspond to different beam-level indication information, and the beam-level indication information indicates whether the beam corresponding to the beam indication information is allowed to access or reside; the transceiver module is specifically used to send the beam-level indication information corresponding to the beam to the beam.

[0055] In one possible implementation, the cell is a non-terrestrial network cell.

[0056] In a fifth aspect, the present application provides a communication device, the communication device includes a processor, the processor is used to execute the method of the first aspect or the second aspect. Further, the communication device may also include a memory, the memory stores computer instructions, and the processor can run the computer instructions to execute the method of the first aspect or the second aspect. Further, the communication device may also include a transceiver, the transceiver is used to execute the method of the first aspect or the second aspect.

[0057] In a sixth aspect, the present application provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed, the method of the first aspect or the second aspect is executed.

[0058] In a seventh aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method of the first aspect or the second aspect described above.

[0059] In an eighth aspect, the present application provides a chip, comprising a processor and a communication interface, wherein the processor and the communication interface are used to support the chip to execute the method of the first aspect or the second aspect.

[0060] In a ninth aspect, the present application provides a communication system, the communication system comprising a terminal and an access network device, wherein the terminal is used to execute the method of the first aspect, and the access network device is used to execute the method of the second aspect.

[0061] Among them, the beneficial effects described in the third to ninth aspects of the present application can refer to the analysis of the beneficial effects of the first or second aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 A schematic diagram of a transparent transmission architecture provided in an embodiment of the present application;

[0063] Figure 2 A schematic diagram of a regeneration architecture provided in an embodiment of the present application;

[0064] Figure 3 A schematic diagram of a ground quasi-stationary coverage scenario provided in an embodiment of the present application;

[0065] Figure 4 A schematic diagram of a ground mobile coverage scenario provided in an embodiment of the present application;

[0066] Figure 5 A schematic diagram of a NTN dedicated cell bar mechanism provided in an embodiment of the present application;

[0067] Figure 6 A schematic diagram of a 5G NR system architecture provided in an embodiment of the present application;

[0068] Figure 7 A schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0069] Figure 8 A schematic diagram of the structure of another communication system provided in an embodiment of the present application;

[0070] Fig. 9 A schematic diagram of the structure of another communication system provided in an embodiment of the present application;

[0071] Fig.10 A flow chart of a communication method provided in an embodiment of the present application;

[0072] Fig.11 A schematic diagram of a scene indicated by area provided in an embodiment of the present application;

[0073] Fig.12 Another schematic diagram of a scene indicated by area provided in an embodiment of the present application;

[0074] Fig.13 A schematic diagram of a scenario indicated by beam provided in an embodiment of the present application;

[0075] Fig.14 A flowchart of another communication method provided in an embodiment of the present application;

[0076] Fig.15 A flowchart of another communication method provided in an embodiment of the present application;

[0077] Fig.16 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0078] Fig.17 A schematic diagram of the structure of another communication device provided in an embodiment of the present application;

[0079] Fig.18A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0080] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0081] It should be noted that the terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0082] It should be understood that in the embodiments of the present application, "at least one (item)" refers to one or more, "multiple" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the association relationship of the associated objects, indicating that there can be three relationships. For example, "A and / or B" can represent: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following (items)" or similar expressions refers to any combination of these items, including any combination of single items (items) or plural items (items). For example, at least one of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple. It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A. For example, B can be determined based on A. It should also be understood that determining B based on A does not mean determining B based only on A, but B can also be determined based on A and / or other information. In addition, the "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitation on this.

[0083] Unless otherwise specified, the "transmission" (transmit / transmission) appearing in the embodiments of the present application refers to bidirectional transmission, including sending and / or receiving actions. Specifically, the "transmission" in the embodiments of the present application includes the sending of data, the receiving of data, or the sending of data and the receiving of data. In other words, the data transmission here includes uplink and / or downlink data transmission. Data may include channels and / or signals, uplink data transmission is uplink channel and / or uplink signal transmission, and downlink data transmission is downlink channel and / or downlink signal transmission. The "network" and "system" appearing in the embodiments of the present application express the same concept, and the communication system is the communication network.

[0084] Before introducing the embodiments of the present application, some terms involved in the embodiments of the present application are explained.

[0085] NTN is a general term for networks involving flying objects, including HAPS and satellite communication networks.

[0086] HAPS is carried on airborne platforms, mainly including aircraft, balloons and airships. HAPS uses the high-altitude platform station as a mobile communication base station and provides mobile services using the same frequency band as the ground mobile network.

[0087] Satellite communication networks rely on onboard platforms, mainly including low earth orbiting (LEO), medium earth orbiting (MEO) and geostationary earthorbiting (GEO). According to the relationship between satellites and base stations, they can be divided into transparent payload architecture and regenerative payload architecture.

[0088] In the transparent transmission architecture, the satellite is only responsible for signal forwarding and has no data processing capabilities. The base station (gNB) is located on the ground, and the satellite is connected to the base station through the ground gateway (gateway, also known as the ground station). The signal between the user equipment (UE) and the base station is transmitted through the satellite, and the data processing function is still located at the base station. The scenarios and protocol stacks of the transparent transmission architecture are as follows: Figure 1 As shown, the link between the satellite and the UE is called a service link, and the link between the satellite and the base station is called a feeder link.

[0089] In the regenerative architecture, the satellite has all or part of the functions of the base station, that is, the satellite can process data. There are two forms: the complete base station is located on the satellite and the base station distribution unit (DU) is located on the satellite. Figure 2 The link between the satellite / base station and the UE is called a service link.

[0090] In the NTN architecture, NTN cells can be divided into the following three categories according to their mobility characteristics in the ground coverage area:

[0091] The first type is earth-fixed: the coverage area of ​​this type of NTN cell is fixed to a certain area on the ground, that is, continuous fixed-point coverage. The NTN cell provided by high elliptical orbit satellite (GEO) is of this type.

[0092] The second type, quasi-earth-fixed: such as Figure 3 As shown, the coverage area of ​​this type of NTN cell is fixed to a certain area on the ground - Area 1 during a period of time t1-t2, and is changed to another area on the ground - Area 2 at t3, that is, fixed-point coverage within a period of time. Low Earth Orbit Satellite (LEO) and medium orbit earth satellite (MEO) can provide this type of NTN cell.

[0093] The third category, earth-moving: Figure 4 As shown, the coverage area of ​​this type of NTN cell slides on the ground. The coverage area is different at different times t1, t2 and t3. LEO and MEO can provide this type of NTN cell.

[0094] In the communication scenario of the ground cell, in order to achieve the purpose of controlling the number and type of UEs accessing the base station, access control rules are set to control the UEs accessing / residing in the ground cell.

[0095] The cell barring mechanism is an access control rule. For load balancing, security or testing purposes, operators can control whether a UE can access / reside in a certain cell through the cell bar field broadcast by the cell.

[0096] In the new radio / new air interface (NR), the base station sends a cell barred indication field (cell Barred) in the master information block (MIB), which is used to indicate whether the current cell is barred or not barred. If a cell is barred, UEs in the radio resource control (RRC) idle state and RRC inactive state cannot camp on the cell, and will no longer use the cell as a candidate cell for cell reselection within a certain period of time.

[0097] In order to independently control the access of NTN cells and terrestrial cells, a dedicated cell bar is introduced for NTN cells to control whether NTN UEs are allowed to access. UEs can distinguish terrestrial cells from NTN cells through the NTN dedicated cell bar field.

[0098] Specifically, Figure 5 As shown, the NTN dedicated cell bar mechanism introduces a dedicated NTN cell bar field (cellBarredNTN) in the system information block 1 (System Information Block 1, SIB1):

[0099] If the current cell does not broadcast cellBarredNTN, it means that the current cell does not support NTN access; if the current cell broadcasts cellBarredNTN, the NTN UE determines whether it can stay in the current cell according to this field (barred / not Barred).

[0100] It should be noted that the UE determines whether to access the NTN cell not based on the cell barred indication field (cellBarred) in the MIB.

[0101] In another example, another access control rule is designed - unified access control (UAC) mechanism. The UAC mechanism can perform access control on different services and / or different types of UEs to balance the load. Specifically, based on the operator's policy, the UE determines whether a certain access attempt is allowed based on parameters related to its access identity (AI) and access category (AC) (sent to the UE by the base station).

[0102] Among them, AI represents the identity characteristics of the user, and the AI ​​parameter is a parameter related to the type of the user. AC represents the attributes of the service initiated by the user, and the AC parameter is a parameter related to the type of service performed by the user. The AI ​​parameter and AC parameter can be broadcasted and sent by the base station in SIB1.

[0103] The above introduces two access control rules of NTN cells. When controlling UE access to NTN cells based on the access control rules of NTN cells, unified control is performed on a cell-by-cell basis, that is, the same access control information is used in the entire cell to control whether the UE can reside in or access the current NTN cell. However, NTN cells have the characteristics of wide coverage. For example, the coverage area of ​​an NTN cell may reach the order of hundreds of thousands of square kilometers, spanning one or more provinces / cities or geographical regions. Within a large coverage area, the access control requirements of UEs are likely to be different. For example, the load conditions of different provinces / cities or geographical regions are different. One area in an NTN cell has a high load and needs to prohibit UE access, while another area in the NTN cell has a low load and can access UE. Regardless of whether the NTN cell uses the same access control information to control all areas in the cell to allow access or prohibit access, it will result in the communication of some areas in the NTN cell being unable to be reasonably scheduled. This method of unified access control within the NTN cell has poor flexibility.

[0104] In order to solve the above technical problems, an embodiment of the present application provides a communication method. The method provided by the embodiment of the present application is described below in conjunction with the drawings in the specification.

[0105] The communication method provided in the embodiment of the present application can be applied to various communication systems, such as: long-term evolution (LTE) system, fifth generation (5G) mobile communication system, wireless fidelity (WiFi) system, future communication system, or a system integrating multiple communication systems, etc., which is not limited in the embodiment of the present application. Among them, 5G can also be called new radio (NR).

[0106] Exemplarily, the embodiments of the present application can be applied in 5G NR system scenarios. Figure 6A schematic diagram of the 5G NR system architecture is shown, in which the 5G NR system includes: 5G Core Network (5G Core Network, 5GC), Access and Mobility Management Function (Access and Mobility Management Function, AMF) network element, User Plane Function (User Plane Function, UPF) network element, 5G Radio Access Network (NG-RAN), 5G base station (gNB) and 4G base station (ng-eNB) connected to 5GC.

[0107] The UE's service base station gNB is responsible for providing the UE with the user plane and control plane protocol functions of 5G NR; the UE's service base station ng-eNB is responsible for providing the UE with the user plane and control plane protocol functions of 4G Evolved Universal Terrestrial Radio Access (E-UTRA). Different base stations can exchange signaling such as switching through the Xn interface. The base station communicates with the core network elements (AMF and UPF) through wired or wireless means, such as through the next generation (NG) interface.

[0108] It should be noted that the base station in the above-mentioned 5G NR system can be located on the ground and connected to the satellite through a gateway, or it can be directly located on the satellite without restriction.

[0109] The communication method provided in the embodiments of the present application can be applied to various communication scenarios, for example, it can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC), machine type communication (MTC), massive machine type communication (mMTC), device to device (D2D), vehicle to everything (V2X), vehicle to vehicle (V2V), and Internet of things (IoT), etc.

[0110] The communication system provided in the embodiment of the present application is described below. The communication system may include:

[0111] Terminal (terminal equipment): including mobile devices that support air interfaces (the air interfaces can be various types of air interfaces, such as 5G air interfaces), which can access satellite networks through air interfaces and initiate calls, Internet access and other services. The terminal can be user equipment (UE), mobile station (MS) or mobile terminal (MT), etc. Specifically, the terminal can be a mobile phone, a tablet computer or a computer with wireless transceiver function, and can also be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city, a smart home, or a vehicle-mounted terminal, etc. In the embodiment of the present application, the device for realizing the function of the terminal device can be a terminal, or a device that can support the terminal to realize the function, such as a chip system, which can be installed in the terminal or used in combination with the terminal. In the embodiment of the present application, the communication system is introduced by taking the terminal as UE as an example.

[0112] Access network equipment: mainly used to implement at least one of the functions of resource scheduling, wireless resource management, and wireless resource control of the terminal. The access network equipment can be an access network equipment in the third generation partnership project (3GPP), for example, an access network equipment for 4G, 5G, or future-oriented 6G networks. The access network equipment can also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or an access network equipment of two or more of the above networks. Specifically, the access network equipment may include a base station, a wireless access point, a transmission receive point (TRP), a transmission point (TP), and any other access node. The access network equipment may also be a module or unit that completes some of the functions of the base station, for example, it may be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence layer protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned various protocol layers, please refer to the relevant technical specifications of the third generation partnership project (3GPP). CU and DU can be set separately, or they can also be included in the same network element, such as a baseband unit (BBU). RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). In different systems, CU, DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, and RU may also be called O-RU.Any unit in the CU (or CU-CP, CU-UP), DU and RU in the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The access network device communicates with the core network device through a wired or wireless manner, such as through a next generation (NG) interface. Different access network devices can interact with each other through signaling such as switching through the Xn interface. In an embodiment of the present application, the device for implementing the function of the access network device may be an access network device; it may also be a device that can support the access network device to implement the function, such as a chip system, which can be installed in the access network device or used in combination with the access network device. In an embodiment of the present application, the communication system is introduced by taking the access network device as a base station as an example.

[0113] Core network equipment: responsible for maintaining the subscription data of the mobile network and providing functions such as session management, mobility management, policy management and security authentication for the terminal. The core network equipment may include the following network elements: UPF, authentication server function (AUSF), AMF, session management function (SMF), network exposure function (NEF), network function repository function (NRF), policy control function (PCF) and unified data management (UDM). Optionally, it may also include application function (AF) and unified data repository (UDR). The introduction of the above network elements can refer to the existing technology and will not be repeated here.

[0114] Ground station: It is a component of a satellite or aerospace system. It is a ground device installed on the earth for space communication. It generally refers to ground equipment installed on the earth's surface (including ships and aircraft) for artificial satellite communication. It is mainly composed of a high-gain antenna system that can track artificial satellites, a microwave high-power transmission system, a low-noise receiving system, and a power supply system. It is responsible for forwarding signaling and service data between access network equipment and core network equipment.

[0115] In one embodiment, if Figure 7 As shown, in the communication system, the base station can be deployed on the ground and communicated with the ground station to send and receive signaling and business data.

[0116] In one embodiment, if Figure 8 As shown, in the communication system, the base station can be deployed on the satellite and communicated with the ground station through a wireless link to send and receive signaling and business data.

[0117] In one embodiment, if Fig. 9 As shown, in the communication system, base stations can be deployed on satellites, and base stations on different satellites can perform signaling interaction and user data transmission through Xn interfaces.

[0118] It should be noted that Figure 7 , Figure 8 ,as well as Fig. 9 This is only an exemplary framework diagram, in which the number of nodes included and the states of the terminals are not limited. Figure 7 , Figure 8 ,as well as Fig. 9 In addition to the functional nodes shown, other nodes may also be included, such as gateway devices, application servers, etc., without limitation.

[0119] Based on the communication system provided in the embodiment of the present application, the embodiment of the present application also provides a communication method. Fig.10 FIG. 1 is a flow chart showing a communication method provided by an embodiment of the present application. Fig.10 As shown, the method may include the following steps:

[0120] S101: An access network device sends first information to a terminal. Correspondingly, the terminal receives the first information.

[0121] Among them, the first information indicates whether the area or beam in the cell is allowed to access or reside. The first information may be cell prohibition indication information, which indicates whether the area or beam in the cell is prohibited. Prohibited can be understood as not allowing the terminal to reside or access the area or beam, and not prohibited can be understood as allowing the terminal to reside or access the area or beam. In other words, not prohibited means allowing the terminal to access or reside, and prohibited means not allowing the terminal to access or reside. Alternatively, the first information may also be UAC information (or UAC parameters). The first information may be carried in system information and sent. For example, carried in SIB1 or in SIB1bis, etc., without limitation.

[0122] After introducing S102, several possible designs of the first information when the first information is cell prohibition indication information will be introduced below.

[0123] It should be noted that, based on actual differences, a region may not be completely covered by a cell. For example, the division of regions may be based on geographical attributes, while the coverage of a cell is not determined based on geographical attributes, so the coverage of a cell may include part of a region, but not the entire region. For example, Fig.11 As shown, area 1 to area 6 are completely covered by the cell, while area 7 to area 8 are not completely covered by the cell. For areas not completely covered by the cell, the access network device can also provide first information for the terminals in these areas.

[0124] In addition, the area covered by a cell may also change. For example, a cell may cover areas 1 to 6 at a certain time, and may cover areas 10 to 20 at another time.

[0125] S102: The terminal determines whether to access or reside in a cell according to the first information.

[0126] Among them, after receiving the first information, the terminal can determine whether to access or reside in the cell. Specifically, when the first information indicates that the target area or target beam where the terminal is located in the cell allows access or residence, it is determined that the cell can be accessed or resided (after determining that the cell can be accessed or resided, the terminal can access or reside in the cell, or not access or reside in the cell). Otherwise, it is determined not to access or reside in the cell. The division of the area can be pre-defined, or determined by the area information provided to the terminal in advance by the access network device, and the corresponding identification information can be set for the area to identify the area. The target area can be the area where the terminal locates itself, and the target beam can be the optimal beam or serving beam determined by the terminal. For the optimal beam and serving beam, the terminal can obtain the optimal beam / serving beam based on the measurement result of the beam reference signal. For example, the reference signal of the beam is a synchronization signal block (synchronization signal / pbch block, SSB), and the terminal obtains the quality of the SSB: reference signal receiving power (reference signal receiving power, RSRP) or reference signal receiving quality (reference signal receiving quality, RSRQ), etc. The terminal can select the beam with the best quality or the beam that meets certain conditions as the optimal beam / service beam.

[0127] In an embodiment of the present application, the access network device sends first information to the terminal indicating whether an area or beam in the cell allows access or residence. The terminal can determine access at an area granularity or a beam granularity based on the first information, thereby achieving higher-precision cell access or residence control, and the cell access or residence control has greater flexibility.

[0128] In one embodiment, the first information includes identification information of an area or beam where access or residence is allowed.

[0129] Among them, for the scenario where the first information includes identification information of the area allowed to access or reside, for example, Fig.12 As shown, the cell includes area 1 to area 6, where area 1 to area 3 allow access or stay, and area 4 to area 6 prohibit access or stay, then the first information includes identification information of area 1 to area 3. Assuming that the terminal is in an area among area 1, area 2, or area 3, it is determined that the cell is allowed to access or stay. For the scenario where the first information includes identification information of the beam allowed to access or stay, for example, Fig.13 As shown, the beams in the cell include multiple beams such as SSB1-SSB4 (in the embodiment of the present application, the reference signal of the beam refers to the beam, for example, the reference signal of the beam is SSB), wherein SSB1 prohibits access or residence, and SSB2-SSB4 and the like allow access or residence, then the first information includes identification information of beams such as SSB2-SSB4. Assuming that the optimal beam or service beam of the terminal is a beam in SSB2-SSB4, it is determined that access or residence in the cell is allowed.

[0130] In the embodiment of the present application, the first information only includes identification information of the area or beam that is allowed to be accessed or resided, so that the overhead required to transmit the first information is relatively small.

[0131] In one embodiment, the first information includes identification information of an area or beam where access or residence is prohibited.

[0132] In the scenario where the first information includes identification information of an area where access or residence is prohibited, Fig.12 In the scenario shown, the first information includes identification information of area 4-area 6 (forbidden to access or stay). Assuming that the terminal is in an area among area 4-area 6, it is determined that the cell is prohibited from accessing or staying. For the scenario where the first information includes identification information of the beam prohibited from accessing or staying, in the example Fig.13 In the illustrated scenario, the first information includes identification information of SSB1 (prohibited access or residence). Assuming that the optimal beam or service beam of the terminal is SSB1, it is determined that the access or residence cell is prohibited.

[0133] In an embodiment of the present application, the first information only includes identification information of the area or beam where access or residence is prohibited, so that the overhead required to transmit the first information is relatively small.

[0134] In one embodiment, the first information indicates identification information of the area or beam and whether the corresponding area or beam is prohibited.

[0135] Among them, for the scenario of the first information indication area, in the following example Fig.12 In the scenario shown, the first information includes identification information of area 1 to area 6 and indication information of whether the corresponding area is prohibited. For example, it can be expressed as area index + indication information of whether the corresponding area is prohibited. For example, the indication information of whether the area is prohibited can use the cell barred indication field (cell Barred) in the cell bar mechanism, which is used to indicate whether the corresponding area is prohibited (barred) or not prohibited (not Barred). For the scenario where the first information indicates a beam, in the case of Fig.13 In the scenario shown, the first information includes identification information of beams such as SSB1-SSB4 and indication information of whether the corresponding beams are prohibited. Exemplarily, it can be expressed as SSB index+corresponding cell Barred.

[0136] In the embodiment of the present application, the first information indicates identification information of the area or beam and whether the corresponding area or beam is prohibited, so that whether the area or beam indicated by the first information is prohibited is more comprehensive.

[0137] In one embodiment, the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

[0138] The terminal and the access network device may pre-agree (or specify in the protocol) which bit in the first information corresponds to which area or beam. Each bit in the first information may correspond to one or more areas (or beams). For example, the first information may be a bitmap. Fig.12 In the scenario shown, there are six areas. Assuming that each bit corresponds to one area, M is 6, and the first information can be 111000. The terminal and the access network device have pre-agreed that the first bit to the sixth bit of the first information correspond to areas 1-6, respectively, 1 indicates that access or residence is allowed, and 0 indicates that access or residence is not allowed. Based on the first information: 111000, the terminal can determine that access or residence is allowed in areas 1-3, and access or residence is prohibited in areas 4-6. Assuming that the terminal is in area 1, area 2 or area 3, it is determined that access or residence is allowed.

[0139] In another example, each bit corresponds to 3 areas, then M is 2, the first information can be 10, and the terminal and the access network device have agreed in advance (or specified in the protocol) that the first bit of the first information corresponds to area 1-area 3, and the second bit corresponds to area 4-area 6. 1 indicates that access or residence is allowed, and 0 indicates that access or residence is not allowed. Based on the first information: 10, the terminal can determine that access or residence is allowed in area 1-area 3, and access or residence is prohibited in area 4-area 6.

[0140] In another example, some bits correspond to one region, and the remaining bits correspond to multiple regions. For example, M is 4, the first bit corresponds to regions 1 to 3, the second bit corresponds to region 4, the third bit corresponds to region 5, and the fourth bit corresponds to region 6.

[0141] It can be understood that the above correspondence between bits and regions is an exemplary introduction. In practical applications, other correspondences between bits and regions can be flexibly set without limitation.

[0142] In an embodiment of the present application, each bit in the first information corresponds to a region or beam respectively, and based on the information carried by each bit, it indicates whether the corresponding region or beam is prohibited. Under the premise that the overhead required for the first signaling is small, it is possible to indicate whether a global region or beam is prohibited.

[0143] In one embodiment, when the first information is cell barring indication information, such as Fig.14 As shown, the method may also include:

[0144] S141, the access network device sends second information to the terminal. Correspondingly, the terminal receives the second information.

[0145] The second information is used to indicate whether the cell is prohibited. The second information may be a cell-level NTN cellbar field. When the second information indicates that the cell is not prohibited, whether to access or reside in the cell is determined based on the first information.

[0146] Exemplarily, based on different actual situations, the second information may be set to barred (indicating that the cell is barred) or notBarred (indicating that the cell is not barred). When the second information is set to not Barred, it indicates that there is an unbarred area / beam in the NTN cell, and the terminal then executes S102. When the second information is set to barred, the entire NTN cell prohibits UE from residing / accessing, and the terminal does not need to determine whether to access or reside in the cell based on the first information, but directly determines whether to access or reside in the cell (S142).

[0147] In the embodiment of the present application, based on whether the second information indicates that the cell is prohibited, the terminal determines whether to access or stay in the cell based on the first information when the second information indicates that the cell is not prohibited, which can reduce the complexity of terminal operation.

[0148] In one embodiment, after S141, the method may further include:

[0149] The terminal determines whether to access or reside in a cell according to the first information and the second information.

[0150] The first information and the second information can work together to determine whether access or residence is allowed. Exemplarily, the first information may be set to barred (indicating that the cell is barred) or not Barred (indicating that the cell is not barred), and similarly, the second information may also be set to barred (indicating that the cell is barred) or not Barred (indicating that the cell is not barred), which can combine 4 situations:

[0151] If both are "barred", it means that access or stay is prohibited.

[0152] If both are "not barred", it means access or stay is allowed.

[0153] If one of the first information and the second information is "barred" and the other is "not barred", it can be determined whether to access or stay according to the following example rules:

[0154] In one example, whether the first information indicates "barred" and the second information indicates "not barred" or the first information indicates "not barred" and the second information indicates "barred", the terminal does not access / reside in the cell within a certain time T0. The terminal and the access network device may pre-agreed (or specify in the protocol) the time T0.

[0155] In another example, when the first information indicates "barred" and the second information indicates "not barred", the terminal does not access / reside in the cell within time T1. When the second information indicates "barred" and the first information indicates "not barred", the terminal does not access / reside in the cell within time T2. T1 and T2 are different, and the terminal and the access network device can pre-agreed (or specified in the protocol) the time T1 and T2.

[0156] In another example, when the first information and the second information indicate different things, whether to access / reside in a cell may be determined in combination with factors such as the type of UE, the mobility of the UE, and the capability of the UE.

[0157] In this embodiment, the first information may be carried in the MIB (eg, the cell bar field in the MIB), and the second information may be carried in the SIB1 (eg, the NTN cell bar field in the SIB1).

[0158] In the embodiment of the present application, whether a cell is prohibited is jointly indicated based on the first information and the second information, thereby improving the flexibility of access / residence control.

[0159] In one embodiment, when the first information is UAC information, such as Fig.15 As shown, the method also includes:

[0160] S151, the access network device sends the UAC information of the cell to the terminal. Correspondingly, the terminal receives the UAC information of the cell.

[0161] Among them, referring to the introduction of the unified access control UAC information in the embodiment of the present application, the UAC information of the cell is used to indicate the UAC information corresponding to the AC and AI, which can control which services and / or types of terminals are allowed to access the cell, and the first information includes the identification information of the area or beam in the cell and the corresponding UAC information, for example, the area index (or SSBindex) + the corresponding UAC information. The UAC information of the cell may be consistent with some UAC information in the first information. In this case, the first information sent by the access network device no longer includes UAC information that is consistent with the UAC information of the cell. The terminal can determine the missing UAC information in the first information based on the UAC information of the cell to reduce the signaling overhead of the first information.

[0162] For the same type of UAC parameters that are inconsistent between the UAC information in the first information and the UAC information of the cell, or the same type of UAC parameters that exist in the first information but not in the UAC information of the cell, the access network device sends them to the terminal.

[0163] Exemplarily, the UAC information of a cell includes the following parameters: uac-BarringForCommon and uac-BarringInfoSetList. The access network device determines that the UAC of a certain area (or beam) in the cell includes uac-BarringForCommon, uac-BarringInfoSetList, and uac-BarringPerPLMN-List. Comparing the two, the first two types of parameters are of the same type. Assuming that the contents of the first two types of parameters are the same, the third type of parameters exists in the UAC information of the area (or beam) but does not exist in the UAC information of the cell, then the first information of the area (or beam) includes the third type of parameters. In this scenario, the terminal uses the third type of parameters in the first information, as well as the first and second type of parameters in the UAC parameters of the cell to determine whether to access / reside in the cell.

[0164] In another example, the first two types of parameters are of the same type. Assuming that the content of the first type of parameters in the UAC information of the area or beam is different from the content of the first type of parameters in the UAC information of the cell, and the third type of parameters exists in the UAC information of the area (or beam) but not in the UAC information of the cell, the first information of the area (or beam) includes the first type of parameters and the third type of parameters. In this scenario, the terminal uses the first type of parameters and the third type of parameters in the first information and the second type of parameters in the UAC information of the cell to determine whether to access or reside in the cell.

[0165] In another example, the first two types of parameters are of the same type. Assume that the content of the first type of parameters in the UAC information of the area or beam is different from the content of the first type of parameters in the UAC information of the cell, and the content of the second type of parameters is also different. The third type of parameters exists in the UAC information of the area (or beam) but does not exist in the UAC information of the cell. Then the first information of the area (or beam) includes the first type of parameters, the second type of parameters, and the third type of parameters. In this scenario, the terminal uses the first type of parameters, the second type of parameters, and the third type of parameters in the first information to determine whether to access or reside in the cell.

[0166] S152: The terminal determines whether to allow access to or stay in the cell according to the first information and the UAC information of the cell.

[0167] Among them, when determining whether to allow access or reside in a cell, the UAC information type not carried in the first information can use the same type of UAC information in the UAC information of the cell. For the same type of UAC information, if the first information and the UAC information of the cell are inconsistent, the terminal determines whether to allow access or reside in the cell based on the UAC information in the first information.

[0168] In other words, S152 is only referenced in the scenario where some UAC information in the UAC information of the cell is consistent with the same type of UAC information in the first information. In the scenario where the UAC information of the cell is completely inconsistent with the UAC information in the first information, the access network device sends the terminal the identification information of the area or beam in the cell and the corresponding UAC information in the first information, and determines whether to allow access or stay in the cell based only on the first information, that is, adopting Fig.10 The steps of the illustrated embodiment determine whether access or camping on a cell is permitted.

[0169] In an embodiment of the present application, UAC information of a cell is received, and whether access to or stay in the cell is allowed is determined based on the first information and the UAC information of the cell, thereby reducing the sending of repeated information in the UAC information of the cell and the first information, and reducing signaling overhead.

[0170] In one embodiment, for a scenario in which the first information indicates whether a beam in a cell is allowed to access or reside, S101 (the access network device sends the first information to the terminal) may include:

[0171] The access network device sends the same aggregate indication information in each beam, and the terminal receives the aggregate indication information accordingly.

[0172] Among them, the first information includes collective indication information, and the collective indication information indicates whether different beams are allowed to access or reside in the cell. In other words, the collective indication information can provide information on whether all beams are allowed to access or reside. The collective indication information can directly indicate whether all beams are allowed to access or reside. For example, as introduced in the above embodiment: the first information indicates the identification information of the area or beam and whether the corresponding area or beam is prohibited. Alternatively, the first information may include M bits, the M bits correspond to the areas or beams in the cell respectively, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited. In the above two designs, both indicate whether all beams are allowed to access or reside.

[0173] In another example, the collective indication information may also indicate whether access or residence is allowed to some beams, so as to realize the function of indicating whether access or residence is allowed to all beams. For example, the above embodiment introduces a design in which the first information includes identification information of areas or beams where access or residence is prohibited. In this design, the terminal can determine that access is allowed to areas or beams not included in the first information. Similarly, there is also a design in which the first information also includes identification information of areas or beams where access or residence is allowed. In this design, the terminal can determine that access is prohibited to areas or beams not included in the first information. For these two designs, the collective indication information only needs to indicate whether access or residence is allowed to some beams.

[0174] In the embodiment of the present application, the same first information is sent in each beam, and the system information corresponding to different beams is consistent. The terminal can merge the system information across beams, thereby obtaining a merging gain.

[0175] In an embodiment, for a scenario in which the first information indicates whether a beam in a cell is allowed to access or reside, S101 (the access network device sends the first information to the terminal) may further include:

[0176] The access network device sends beam-level indication information corresponding to the beam in the beam. Correspondingly, the terminal receives the beam-level indication information.

[0177] Among them, the first information is beam-level indication information, and different beams correspond to different beam-level indication information. The beam-level indication information indicates whether the beam corresponding to the beam indication information is allowed to access or reside. In other words, the beam-level indication information can only indicate whether the corresponding beam is allowed to access or reside. At this time, the beam-level indication information corresponding to the beam is sent in the beam. The terminal can receive the beam-level indication information of the beam in which it is located, and determine whether it can access / reside in the cell based on it (the terminal may also receive the beam-level indication information of the adjacent beam to the beam in which it is located. At this time, the terminal can determine the access / residence in the cell based on the beam-level indication information of the optimal beam / service beam). Exemplarily, the first information sent on beam 1 contains a message whether beam 1 is prohibited; the first information sent on beam 2 contains a message whether beam 2 is prohibited, and so on. The first information sent on different beams is independent.

[0178] In the embodiment of the present application, the access network device sends beam-level indication information corresponding to the beam in the beam, which can realize access / residence indication with beam granularity.

[0179] Combined with the introduction of the above embodiments of the present application, it is not difficult to see that the present application starts from improving the flexibility of cell access / residence indication, and designs a corresponding communication method for the possible division mechanism of indication granularity (division by region or by beam) and the possible form of high-granularity access / residence indication information (cell bar or UAC information) indicated by the access network device to the terminal, thereby achieving high-precision cell access or residence control. Specifically, by distinguishing different cell prohibition indication information (or UAC information) for different regions / beams, it is possible to accurately control whether the terminals in the relevant area can reside / access the cell according to the load or other requirements in the actual geographical area, so as to avoid unnecessary access restrictions on terminals in irrelevant areas, thereby improving the flexibility of cell access or residence control, and optimizing the user experience.

[0180] It should be understood that in the above embodiments, the terminal device and / or the access network device can perform some or all of the steps in each embodiment. These steps or operations are only examples, and the embodiments of the present application can also perform other operations or variations of various operations. In addition, each step can be performed in a different order presented in each embodiment, and it is possible not to perform all the operations in the embodiments of the present application. Moreover, the size of the sequence number of each step does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0181] The above mainly introduces the scheme provided by the embodiment of the present application from the perspective of the execution logic of each step. It is understandable that each node, such as a terminal, includes a hardware structure and / or software module corresponding to each function in order to realize the above functions. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiment disclosed herein, the method of the embodiment of the present application can be implemented in the form of hardware, software, or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0182] The embodiment of the present application can divide the functional modules of the terminal or access network device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0183] In specific implementation, the network elements shown in this application, such as: the terminal can use Fig.16 The structure shown or includes Fig.16 Parts shown. Fig.16 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. When the communication device has the function of a terminal described in an embodiment of the present application, the communication device may be a terminal or a chip or system on chip in the terminal. When the communication device has the function of an access network device described in an embodiment of the present application, the communication device may be an access network device or a chip or system on chip in the access network device.

[0184] like Fig.16As shown, the communication device may include a processor 161. Optionally, the communication device may also include a communication line 162, a transceiver 163, and a memory 164. The processor 161, the memory 164, and the transceiver 163 may be connected via the communication line 162. In an example, the processor 161 may include one or more CPUs, such as Fig.16 CPU0 and CPU1 in.

[0185] As an optional implementation, the communication device includes multiple processors, for example, Fig.16 In addition to the processor 161, a processor 167 may also be included.

[0186] The processor 161 is used to execute the communication method provided in the embodiment of the present application. The processor 161 can be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 161 can also be other devices with processing functions, such as circuits, devices, or software modules.

[0187] The communication line 162 is used to transmit information between the components included in the communication device.

[0188] The transceiver 163 is used to communicate with other devices or other communication networks. The other communication networks may be Ethernet, radio access network (RAN), wireless local area network (WLAN), etc. The transceiver 163 may be an interface circuit, a pin, a radio frequency module, a transceiver or any device capable of achieving communication.

[0189] Furthermore, the communication device may also include a memory 164. The memory 164 is used to store instructions, wherein the instructions may be computer programs.

[0190] Among them, the memory 164 can be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage, magnetic disk storage media or other magnetic storage devices, and the optical disc storage includes a compressed optical disc, a laser disc, an optical disc, a digital versatile disc, or a Blu-ray disc, etc.

[0191] It should be noted that the memory 164 can exist independently of the processor 161, or can be integrated with the processor 161. The memory 164 can be used to store instructions or program codes or some data, etc. The memory 164 can be located in the communication device or outside the communication device, without limitation. When the processor 161 executes the instructions stored in the memory 164, the method provided in the embodiment of the present application can be implemented.

[0192] As an optional implementation, the communication device further includes an output device 165 and an input device 166. Exemplarily, the input device 166 is a keyboard, a mouse, a microphone, a joystick, and the like, and the output device 165 is a display screen, a speaker, and the like.

[0193] It should be noted that the communication device can be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system or a Fig.16 In addition, Fig.16 The structure shown in the figure does not constitute a limitation on the communication device, except Fig.16 In addition to the components shown, the communication device may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0194] In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0195] Fig.17A communication device 170 provided in an embodiment of the present application is shown. The communication device may be a terminal or a chip or system on chip in a terminal. The communication device may implement the functions performed by the terminal in the embodiment of the present application and achieve corresponding beneficial effects. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes:

[0196] The transceiver module 1701 is used to receive first information, wherein the first information is used to indicate whether an area or beam in a cell is allowed to be accessed or resided; the processing module 1702 is used to determine whether to access or reside in the cell according to the first information.

[0197] In one embodiment, the processing module 1702 is specifically used to: determine the access or residence cell when the first information indicates that the target area or target beam allows access or residence; wherein the target area is the area where the terminal is located in the cell, and the target beam is the beam where the terminal is located in the cell.

[0198] In one embodiment, the first information is cell barring indication information, which indicates whether an area or a beam in a cell is barred, or the first information is unified access control information.

[0199] In one embodiment, when the first information is cell prohibition indication information, the transceiver module 1701 is also used to receive second information, wherein the second information is used to indicate whether the cell is prohibited; the processing module 1702 is specifically used to determine whether to access or stay in the cell according to the first information when the second information indicates that the cell is not prohibited.

[0200] In one embodiment, when the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

[0201] In one embodiment, when the first information is unified access control information, the transceiver module 1701 is also used to receive the unified access control information of the cell; the processing module 1702 is specifically used to determine whether to allow access or stay in the cell based on the first information and the unified access control information of the cell.

[0202] In one embodiment, the first information includes identification information of an area or a beam in a cell and corresponding unified access control information.

[0203] In one embodiment, the cell is a non-terrestrial network cell.

[0204] Fig.18 A communication device 180 provided in an embodiment of the present application is shown. The communication device may be an access network device or a chip or system on chip in the access network device. The communication device may implement the functions performed by the access network device in the embodiment of the present application and achieve corresponding beneficial effects. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes:

[0205] The transceiver module 1801 is used to send first information; wherein the first information indicates whether an area or beam in a cell is allowed to be accessed or resided.

[0206] In one embodiment, the first information is cell barring indication information, which indicates whether an area or a beam in a cell is barred, or the first information is unified access control information.

[0207] In one embodiment, when the first information is cell barring indication information, the transceiver module 1801 is further used to send second information, wherein the second information is used to indicate whether the cell is barred.

[0208] In one embodiment, when the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

[0209] In an embodiment, when the first information is unified access control information, the transceiver module 1801 is further used to send the unified access control information of the cell.

[0210] In one embodiment, the first information includes identification information of an area or a beam in a cell and corresponding unified access control information.

[0211] In one embodiment, when the first information indicates whether a beam in a cell is allowed to access or reside, the first information includes collective indication information, and the collective indication information includes prohibition indication information corresponding to different beams respectively; the transceiver module 1801 is specifically used to send the collective indication information to all beams. Alternatively, the first information includes multiple beam-level indication information, different beams correspond to different beam-level indication information, and the beam-level indication information indicates whether the beam corresponding to the beam indication information is allowed to access or reside; the transceiver module 1801 is specifically used to send the beam-level indication information corresponding to the beam to the beam.

[0212] In one embodiment, the cell is a non-terrestrial network cell.

[0213] The embodiment of the present application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by a computer program to instruct the relevant hardware, and the program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be a terminal device of any of the above embodiments, such as: an internal storage unit including a data sending end and / or a data receiving end, such as a hard disk or memory of a terminal device. The above computer-readable storage medium can also be an external storage device of the above terminal device, such as a plug-in hard disk equipped on the above terminal device, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. Further, the above computer-readable storage medium can also include both an internal storage unit of the above terminal device and an external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above terminal device. The above computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0214] The present application also provides a computer instruction. All or part of the process in the above method embodiment can be completed by computer instructions to instruct related hardware (such as computers, processors, access network devices, and terminals, etc.). The program can be stored in the above computer-readable storage medium.

[0215] The embodiment of the present application also provides a chip system. The chip system can be composed of a chip, or can include a chip and other discrete devices, without limitation. The chip system includes a processor and a transceiver, and all or part of the processes in the above method embodiment can be completed by the chip system, such as the chip system can be used to implement the functions performed by the terminal or access network device in the above method embodiment.

[0216] In one possible design, the above-mentioned chip system also includes a memory, which is used to store program instructions and / or data. When the chip system is running, the processor executes the program instructions stored in the memory so that the chip system performs the functions performed by the terminal or access network device in the above-mentioned method embodiment.

[0217] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0218] In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing instructions and / or data.

[0219] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0220] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0221] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0222] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a device, such as: a single-chip microcomputer, a chip, etc., or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, disks, or optical disks.

[0223] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: include: receiving first information, wherein the first information is used to indicate whether an area or a beam in a cell is allowed to be accessed or resided; Determine whether to access or stay in the cell according to the first information.

2. The communication method according to claim 1, characterized in that: The determining, according to the first information, whether to access or reside in the cell includes: When the first information indicates that the target area or target beam allows access or residence, determine to access or reside in the cell; wherein the target area is the area where the terminal is located in the cell, and the target beam is the beam where the terminal is located in the cell.

3. The communication method according to claim 1 or 2, characterized in that: The first information is cell barring indication information, and the cell barring indication information indicates whether an area or a beam in the cell is barred, or the first information is unified access control information.

4. The communication method according to claim 3, characterized in that: In a case where the first information is cell barring indication information, the method further includes: receiving second information, wherein the second information is used to indicate whether the cell is prohibited; The determining, according to the first information, whether to access or reside in the cell includes: In a case where the second information indicates that the cell is not barred, determining whether to access or camp on the cell is performed according to the first information.

5. The communication method according to claim 3 or 4, characterized in that: In the case where the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

6. The communication method according to claim 1, characterized in that: In the case where the first information is unified access control information, the method further includes: receiving unified access control information of the cell; The method further comprises: Determine whether to allow access to or stay in the cell according to the first information and the unified access control information of the cell.

7. The communication method according to claim 6, characterized in that: The first information includes identification information of the area or beam in the cell and corresponding unified access control information.

8. The communication method according to any one of claims 1 to 7, characterized in that: The cell is a non-terrestrial network cell.

9. A communication method, characterized in that: include: Send first information; wherein the first information indicates whether an area or beam in a cell allows access or residence.

10. The communication method according to claim 9, characterized in that: The first information is cell barring indication information, and the cell barring indication information indicates whether an area or a beam in the cell is barred, or the first information is unified access control information.

11. The communication method according to claim 10, characterized in that: In a case where the first information is cell barring indication information, the method further includes: Sending second information, wherein the second information is used to indicate whether the cell is barred.

12. The communication method according to claim 10 or 11, characterized in that: In the case where the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

13. The communication method according to claim 9, characterized in that: In the case where the first information is unified access control information, the method further includes: Send unified access control information of the cell.

14. The communication method according to claim 13, characterized in that: The first information includes identification information of the area or beam in the cell and corresponding unified access control information.

15. The communication method according to any one of claims 9 to 14, characterized in that: In the case where the first information indicates whether a beam in a cell is allowed to be accessed or resided, the first information includes set indication information, and the set indication information indicates whether different beams are allowed to be accessed or resided respectively; The sending of the first information comprises: Sending the aggregate indication information in all beams; Alternatively, the first information includes a plurality of beam-level indication information, different beams correspond to different beam-level indication information, and the beam-level indication information indicates whether the beam corresponding to the beam indication information is allowed to access or reside; The sending of the first information comprises: The beam-level indication information corresponding to the beam is sent to the beam.

16. The communication method according to any one of claims 9 to 15, characterized in that: The cell is a non-terrestrial network cell.

17. A communication device, characterized in that: include: A transceiver module, configured to receive first information, wherein the first information is used to indicate whether an area or beam in a cell is allowed to access or reside; A processing module is used to determine whether to access or stay in the cell according to the first information.

18. The communication device according to claim 17, characterized in that: The processing module is specifically used for: When the first information indicates that the target area or target beam allows access or residence, determine to access or reside in the cell; wherein the target area is the area where the terminal is located in the cell, and the target beam is the beam where the terminal is located in the cell.

19. The communication device according to claim 17 or 18, characterized in that: The first information is cell barring indication information, and the cell barring indication information indicates whether an area or a beam in the cell is barred, or the first information is unified access control information.

20. The communication device according to claim 19, characterized in that In the case where the first information is cell barring indication information, the transceiver module is further used to receive second information, wherein the second information is used to indicate whether the cell is barred; The processing module is specifically configured to determine whether to access or reside in the cell according to the first information when the second information indicates that the cell is not prohibited.

21. The communication device according to claim 19 or 20, characterized in that: In the case where the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

22. The communication device according to claim 17, characterized in that: In the case where the first information is unified access control information, the transceiver module is further used to receive the unified access control information of the cell; The processing module is specifically configured to determine whether to allow access to or stay in the cell according to the first information and the unified access control information of the cell.

23. The communication device according to claim 22, characterized in that: The first information includes identification information of the area or beam in the cell and corresponding unified access control information.

24. The communication device according to any one of claims 17 to 23, characterized in that: The cell is a non-terrestrial network cell.

25. A communication device, characterized in that: include: A transceiver module is used to send first information; wherein the first information indicates whether an area or beam in a cell is allowed to access or reside.

26. The communication device according to claim 25, characterized in that The first information is cell barring indication information, and the cell barring indication information indicates whether an area or a beam in the cell is barred, or the first information is unified access control information.

27. The communication device according to claim 26, characterized in that In the case where the first information is cell barring indication information, the transceiver module is further used to send second information, wherein the second information is used to indicate whether the cell is barred.

28. The communication device according to claim 26 or 27, characterized in that: In the case where the first information is cell prohibition indication information, the first information includes identification information of an area or beam where access or residence is allowed, or the first information includes identification information of an area or beam where access or residence is prohibited, or the first information indicates identification information of an area or beam and whether the corresponding area or beam is prohibited, or the first information includes M bits, the M bits respectively correspond to areas or beams in the cell, and the bits in the M bits respectively indicate whether the corresponding areas or beams are prohibited.

29. The communication device according to claim 25, characterized in that In the case where the first information is unified access control information, the transceiver module is further used to send the unified access control information of the cell.

30. The communication device according to claim 29, characterized in that The first information includes identification information of the area or beam in the cell and corresponding unified access control information.

31. The communication device according to any one of claims 25 to 30, characterized in that: In a case where the first information indicates whether a beam in a cell is allowed to access or reside, the first information includes set indication information, and the set indication information includes prohibition indication information corresponding to different beams respectively; The transceiver module is specifically configured to send the set indication information in all beams; Alternatively, the first information includes a plurality of beam-level indication information, different beams correspond to different beam-level indication information, and the beam-level indication information indicates whether the beam corresponding to the beam indication information is allowed to access or reside; The transceiver module is specifically used to send the beam-level indication information corresponding to the beam to the beam.

32. The communication device according to any one of claims 25 to 31, characterized in that: The cell is a non-terrestrial network cell.

33. A communication device, characterized in that: The communication device comprises a processor, and the processor is used to execute the method according to any one of claims 1-16.

34. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed, the method according to any one of claims 1 to 16 is executed.

35. A chip, characterized in that: The chip includes a processor and a communication interface, and the processor and the communication interface are used to support the chip to execute the method according to any one of claims 1-16.

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