Near field service request method, apparatus, device, storage medium and program product

Abstract

This application discloses a near-field service request method, apparatus, device, storage medium, and program product, relating to the field of communication technology, to save resources. The method includes: sending a random access request to a network device, the random access request including a random access preamble; receiving a random access response sent by the network device, the random access response including near-field access discrimination parameters; and, if it is determined that near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, sending an RRC connection establishment request to the network device, the RRC connection establishment request including first information indicating that the reason for RRC establishment is near-field service. Embodiments of this application can save resources.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a near-field service request method, apparatus, device, storage medium, and program product. Background Technology

[0002] In traditional far-field transmission, electromagnetic waves are often considered to propagate as plane waves. However, in near-field communication, electromagnetic waves propagate as spherical waves, and their phase must be precisely derived from the physical geometry of the spherical wave, being a nonlinear function of the antenna exponent. The incident angle and distance information for each path between the base station and the terminal are contained within this nonlinear phase. Therefore, using far-field beamforming in the near-field region may result in some performance loss and energy dissipation. Utilizing the additional distance information from the spherical wavefront, near-field beamforming can focus beam energy at a specific location, achieving energy focusing simultaneously in the angular and range domains. Based on this characteristic, near-field beamforming is also known as beam focusing. The focusing characteristics of the near-field region make the use of the spatial domain more flexible, and compared to using far-field codewords, it can improve the terminal's received power.

[0003] Currently, conventional near-field communication (NFC) solutions primarily focus on the network side, using near-field codebooks and beam management schemes to mitigate performance degradation caused by terminal mobility. This implies that the network side passively adapts to terminal changes through underlying transmission strategies. Therefore, how to enable the terminal to express its near-field service needs during connection establishment to conserve resources has become a pressing technical challenge. Summary of the Invention

[0004] This application provides a near-field service request method, apparatus, device, storage medium, and computer program product to save resources.

[0005] In a first aspect, embodiments of this application provide a near-field service request method, applied to a terminal, including:

[0006] Send a random access request to the network device, the random access request including a random access preamble;

[0007] Receive a random access response sent by the network device, the random access response including near-field access discrimination parameters;

[0008] If the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, a Radio Resource Control (RRC) connection establishment request is sent to the network device. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

[0009] Optionally, the near-field access discrimination parameters include:

[0010] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0011] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0012] Optionally, the near-field access control parameters include the terminal's access identifier and access type;

[0013] When it is determined that the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, sending a Radio Resource Control (RRC) connection establishment request to the network device includes:

[0014] Based on the access identifier, determine whether the terminal can initiate near-field service;

[0015] Based on the access type, determine whether the network supports near-field services;

[0016] If it is determined that the terminal is capable of initiating near-field service and the network supports near-field service, and if the terminal is determined to be within the near-field range based on the difference or the distance, the RRC connection establishment request is sent to the network device.

[0017] Optionally, the method further includes:

[0018] Receive the near-field access control parameters sent by the core network equipment.

[0019] Optionally, the method further includes:

[0020] The system receives near-field related parameters sent by the network device or RIS via system messages. These near-field related parameters are used to determine the near-field range.

[0021] Optionally, the system message is transmitted by the network device or the RIS using a far-field beam.

[0022] Optionally, the method further includes:

[0023] A first request is sent to the network device, the first request being used to request the cessation of near-field services.

[0024] Optionally, the method further includes:

[0025] The terminal receives a first message sent by the network device, the first message being used to indicate that the terminal is not within the near field range.

[0026] Secondly, embodiments of this application provide a near-field service request method, applied to a network device, including:

[0027] The receiving terminal sends a random access request, the random access request including a random access preamble;

[0028] Send a random access response to the terminal, the random access response including near-field access discrimination parameters;

[0029] The terminal sends an RRC connection establishment request, which includes first information indicating that the reason for RRC establishment is near-field service.

[0030] Optionally, the near-field access discrimination parameters include:

[0031] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0032] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0033] Optionally, the method further includes:

[0034] Measurement timing advance (TA);

[0035] The near-field access discrimination parameters are determined based on the TA.

[0036] Optionally, the method further includes:

[0037] Near-field related parameters are sent to the terminal or RIS via system messages. These near-field related parameters are used to determine the near-field range.

[0038] Optionally, the system messages are transmitted using far-field beams.

[0039] Optionally, the method further includes:

[0040] Send a first message to the terminal and release the RRC connection between the network device and the terminal. The first message is used to indicate that the terminal is not in the near field range.

[0041] Optionally, the method further includes:

[0042] Receive a first request sent by the terminal, the first request being used to request the termination of near-field service;

[0043] Release the RRC connection between the network device and the terminal according to the first request.

[0044] Optionally, the method further includes:

[0045] Receive a second message sent by the RIS, the second message being used to report the RIS's near-field capability; report the RIS's near-field capability to the core network equipment; or,

[0046] Report the near-field capabilities of the network devices to the core network equipment.

[0047] Thirdly, embodiments of this application provide a near-field service request device, applied to a terminal, comprising:

[0048] The first sending module is used to send a random access request to the network device, the random access request including a random access preamble;

[0049] The first receiving module is configured to receive a random access response sent by the network device, the random access response including near-field access discrimination parameters;

[0050] The second sending module is used to send an RRC connection establishment request to the network device when it is determined that the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

[0051] Optionally, the near-field access discrimination parameters include:

[0052] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0053] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0054] Optionally, the near-field access control parameters include the terminal's access identifier and access type; the second sending module includes:

[0055] The first determining submodule is used to determine whether the terminal can initiate near-field service based on the access identifier;

[0056] The second determining submodule is used to determine whether the network supports near-field services based on the access type.

[0057] The first sending submodule is configured to send the RRC connection establishment request to the network device if it is determined that the terminal is within the near field range based on the difference or the distance, when it is determined that the terminal is capable of initiating near field service and the network supports near field service.

[0058] Optionally, the device further includes:

[0059] The second receiving module is used to receive the near-field access control parameters sent by the core network equipment.

[0060] Optionally, the device further includes:

[0061] The third receiving module is used to receive near-field related parameters sent by the network device or RIS through system messages, the near-field related parameters being used to determine the near-field range.

[0062] Optionally, the system message is transmitted by the network device or the RIS using a far-field beam.

[0063] Optionally, the device further includes:

[0064] The third sending module is used to send a first request to the network device, the first request being used to request the cessation of near-field service.

[0065] Optionally, the device further includes:

[0066] The fourth receiving module is used to receive a first message sent by the network device, the first message being used to indicate that the terminal is not in the near field range.

[0067] Fourthly, embodiments of this application provide a near-field service request apparatus, applied to a network device, comprising:

[0068] The first receiving module is used to receive a random access request sent by the terminal, wherein the random access request includes a random access preamble;

[0069] The first sending module is used to send a random access response to the terminal, the random access response including near-field access discrimination parameters;

[0070] The second receiving module is used to receive the RRC connection establishment request sent by the terminal. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

[0071] Optionally, the near-field access discrimination parameters include:

[0072] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0073] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0074] Optionally, the device further includes:

[0075] The measurement module is used to measure the timing advance (TA).

[0076] The determination module is used to determine the near-field access discrimination parameters based on the TA.

[0077] Optionally, the device further includes:

[0078] The second sending module is used to send near-field related parameters to the terminal or RIS via system messages. The near-field related parameters are used to determine the near-field range.

[0079] Optionally, the system messages are transmitted using far-field beams.

[0080] Optionally, the device further includes:

[0081] The third sending module is used to send a first message to the terminal and release the RRC connection between the network device and the terminal. The first message is used to indicate that the terminal is not in the near field range.

[0082] Optionally, the device further includes:

[0083] The third receiving module is used to receive a first request sent by the terminal, the first request being used to request the termination of near-field service;

[0084] A first processing module is configured to release the RRC connection between the network device and the terminal according to the first request.

[0085] Optionally, the device further includes:

[0086] The second processing module is used to receive a second message sent by the RIS, the second message being used to report the RIS's near-field capability; and to report the RIS's near-field capability to the core network equipment; or...

[0087] The third processing module is used to report the near-field capabilities of the network devices to the core network equipment.

[0088] Fifthly, embodiments of this application provide a near-field service request apparatus, applied to a terminal, comprising: a processor and a transceiver; the processor is used for:

[0089] Send a random access request to the network device, the random access request including a random access preamble;

[0090] Receive a random access response sent by the network device, the random access response including near-field access discrimination parameters;

[0091] If the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, an RRC connection establishment request is sent to the network device. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

[0092] Optionally, the near-field access discrimination parameters include:

[0093] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0094] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0095] Optionally, the near-field access control parameters include the terminal's access identifier and access type; the processor is further configured to:

[0096] Based on the access identifier, determine whether the terminal can initiate near-field service;

[0097] Based on the access type, determine whether the network supports near-field services;

[0098] If it is determined that the terminal is capable of initiating near-field service and the network supports near-field service, and if the terminal is determined to be within the near-field range based on the difference or the distance, the RRC connection establishment request is sent to the network device.

[0099] Optionally, the processor is further configured to:

[0100] Receive the near-field access control parameters sent by the core network equipment.

[0101] Optionally, the processor is further configured to:

[0102] The system receives near-field related parameters sent by the network device or RIS via system messages. These near-field related parameters are used to determine the near-field range.

[0103] Optionally, the system message is transmitted by the network device or the RIS using a far-field beam.

[0104] Optionally, the processor is further configured to:

[0105] A first request is sent to the network device, the first request being used to request the cessation of near-field services.

[0106] Optionally, the processor is further configured to:

[0107] The terminal receives a first message sent by the network device, the first message being used to indicate that the terminal is not within the near field range.

[0108] Sixthly, embodiments of this application provide a near-field service request apparatus, applied to a network device, comprising: a processor and a transceiver; the processor is used for:

[0109] The receiving terminal sends a random access request, the random access request including a random access preamble;

[0110] Send a random access response to the terminal, the random access response including near-field access discrimination parameters;

[0111] The terminal sends an RRC connection establishment request, which includes first information indicating that the reason for RRC establishment is near-field service.

[0112] Optionally, the near-field access discrimination parameters include:

[0113] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0114] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0115] Optionally, the processor is further configured to:

[0116] Measurement advance measure (TA);

[0117] The near-field access discrimination parameters are determined based on the TA.

[0118] Optionally, the processor is further configured to:

[0119] Near-field related parameters are sent to the terminal or RIS via system messages. These near-field related parameters are used to determine the near-field range.

[0120] Optionally, the system messages are transmitted using far-field beams.

[0121] Optionally, the processor is further configured to:

[0122] Send a first message to the terminal and release the RRC connection between the network device and the terminal. The first message is used to indicate that the terminal is not in the near field range.

[0123] Optionally, the processor is further configured to:

[0124] Receive a first request sent by the terminal, the first request being used to request the termination of near-field service;

[0125] Release the RRC connection between the network device and the terminal according to the first request.

[0126] Optionally, the processor is further configured to:

[0127] Receive a second message sent by the RIS, the second message being used to report the RIS's near-field capability; report the RIS's near-field capability to the core network equipment; or,

[0128] Report the near-field capabilities of the network devices to the core network equipment.

[0129] In a seventh aspect, embodiments of this application also provide a communication device, including: a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps in the near-field service request method as described above.

[0130] Eighthly, embodiments of this application also provide a readable storage medium storing a program that, when executed by a processor, implements the steps in the near-field service request method as described above.

[0131] In a ninth aspect, embodiments of this application also provide a computer program product, including computer instructions that, when executed by a processor, implement the steps in the near-field service request method as described above.

[0132] In this embodiment, the terminal can send an RRC connection establishment request to the network device and indicate that the reason for the RRC establishment is near-field service when it determines that the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal. Thus, in this embodiment, the terminal can actively initiate a near-field service request, enabling the network device to quickly identify and process the request and provide targeted near-field services to the terminal, thereby saving resources. Attached Figure Description

[0133] Figure 1 This is one of the flowcharts of the near-field service request method provided in the embodiments of this application;

[0134] Figure 2 This is the second flowchart of the near-field service request method provided in the embodiments of this application;

[0135] Figure 3 This is a schematic diagram illustrating an application scenario of an embodiment of this application;

[0136] Figure 4 This is the third flowchart of the near-field service request method provided in the embodiments of this application;

[0137] Figure 5 This is one of the structural diagrams of the near-field service request device provided in the embodiments of this application;

[0138] Figure 6 This is a second structural diagram of the near-field service request device provided in the embodiments of this application;

[0139] Figure 7 This is the third structural diagram of the near-field service request device provided in the embodiments of this application;

[0140] Figure 8 This is the fourth structural diagram of the near-field service request device provided in the embodiments of this application. Detailed Implementation

[0141] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0142] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0143] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0144] See Figure 1 , Figure 1 This is a flowchart of a near-field service request method provided in an embodiment of this application, applied to a terminal, such as... Figure 1 As shown, it includes the following steps:

[0145] Step 101: Send a random access request to the network device, the random access request including a random access preamble.

[0146] The random access request is Msg1. The random access request sent by the terminal can be sent only if the network supports near-field services, thus ensuring a high success rate for near-field services. In this embodiment, the core network equipment primarily determines whether the network supports near-field services and, if so, sends near-field access control parameters to the terminal. Here, the network may include core network equipment, Radio Access Network (RAN) equipment, terminals, RIS, etc. The RAN equipment is the network equipment, such as a base station, composed of Distributed Units (DUs) / Radio Units (RUs) and Central Units (CUs). In the network, the RIS or RU itself can also have near-field capabilities; a large-aperture RIS or RU can introduce near-field effects. The RIS, also known as an Intelligent Reflecting Surface (IRS), is an economical and controllable passive reflective device that can adjust the reflective unit through digital programming to achieve precise control of the electromagnetic wave reflection direction.

[0147] In the case of a RIS configuration, if the RIS has already established a connection with the network side, the RIS can report near-field capabilities to the core network device through the network device. The network device can report near-field capabilities to the core network device in the following two ways:

[0148] (1) Radio-related capabilities (near-field capabilities) defined by DU or RU are contained in the System Information Block (SIB) (such as SIB1). In order to ensure the integrity of system messages, DU or RU will report the radio capabilities to CU, and then CU will report them to the core network equipment.

[0149] (2) The CU configures radio-related capabilities for the DU or RU. For example, through the system configuration of the RRC layer, the radio-related capabilities can be included in other SIB messages, and then the CU reports the radio-related capabilities of the DU or RU to the core network equipment.

[0150] Based on the reported near-field capabilities, the core network equipment determines whether the network supports near-field services. For example, if the core network equipment receives near-field capabilities reported by the RIS or network equipment, it determines that the network supports near-field services; otherwise, it determines that the network does not support near-field services. If the network supports near-field services, it sends near-field access control parameters to the terminal via Non-Access Stratum (NAS) protocol messages; otherwise, the process can end. Correspondingly, the terminal receives the near-field access control parameters sent by the core network equipment.

[0151] The near-field access control parameters include the terminal's access identifier and access type. The access identifier identifies the terminal that actively initiates the near-field service, and the access type indicates support for the near-field service.

[0152] Step 102: Receive a random access response sent by the network device, wherein the random access response includes near-field access discrimination parameters.

[0153] The random access response is Msg2. The near-field access discrimination parameters include:

[0154] The difference between the distance between the terminal and the RIS or the distance between the terminal and the network device and the near-field distance; or, the distance between the terminal and the RIS or the distance between the terminal and the network device.

[0155] The above distance is estimated by the network device based on the measured TA and near-field distance. The near-field distance is calculated by the network device based on the near-field capability parameters of the RIS or RU.

[0156] Step 103: If the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, an RRC connection establishment request is sent to the network device. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

[0157] The near-field access control parameters of the terminal refer to the near-field access control parameters received by the terminal from the core network equipment, or they may be the near-field access control parameters stored by the terminal. The near-field service conditions may include, for example, whether the terminal has the identity to initiate a near-field access request, whether the network supports near-field services, and whether the terminal is within the near-field range.

[0158] Accordingly, in this step, the terminal determines whether it can initiate near-field service based on the access identifier. If the terminal possesses the access identifier or the access identifier indicates that the terminal has the identity to initiate a near-field access request, then the terminal is determined to be able to initiate near-field service; otherwise, it cannot initiate near-field service. The terminal determines whether the network supports near-field service based on the access type. If the access type indicates support for near-field service, then the network is determined to support near-field service; otherwise, the network is determined not to support near-field service.

[0159] If it is determined that the terminal is capable of initiating near-field service and the network supports near-field service, and if the terminal is determined to be within the near-field range based on the difference or the distance, the RRC connection establishment request is sent to the network device.

[0160] If the near-field access discrimination parameter includes the difference value, if the difference value is greater than 0, it is determined that the terminal is not within the near-field range; if the difference value is less than or equal to 0, it is determined that the terminal is within the near-field range. If it is determined that the terminal is not within the near-field range, the terminal can adjust its position according to the difference value and resend the random access request.

[0161] If the near-field access discrimination parameter includes the distance, the terminal can determine the near-field range based on the near-field related parameters sent by the network device or RIS via system messages (SIB1 or SIB), and determine whether it is within the near-field range based on the distance. Correspondingly, in this embodiment, the terminal can also receive near-field related parameters sent by the network device or RIS via system messages. These system messages are sent by the network device or RIS using far-field beamforming. The near-field related parameters may include the Rayleigh distance of the antenna, aperture, etc. The terminal can determine the near-field range based on these near-field related parameters. Then, the terminal can determine whether it is within the near-field range based on the difference between the distance and the near-field distance (which may be a value notified to the terminal by the network device or determined by the terminal itself). If the difference is greater than 0, the terminal is determined not to be within the near-field range; if the difference is less than or equal to 0, the terminal is determined to be within the near-field range. If the terminal is determined not to be within the near-field range, the terminal can adjust its position based on the difference and resend the random access request.

[0162] There is no strict sequential relationship between the above-mentioned processes of determining the access identifier, determining the access type, and determining whether the terminal is within the near field range. If any one of these conditions is determined to be unsatisfactory, the process can be terminated.

[0163] Based on the terminal's access identifier and access type, the terminal can map the RRC connection establishment reason to near-field service and send an RRC connection establishment request (Msg3) to the network device. This request may include first information indicating that the RRC establishment reason is near-field service. Afterwards, the terminal can receive an RRC connection establishment message (Msg4) sent by the network device. The terminal then sends an RRC establishment completion message to the network device, and the connection between the terminal and the network is established.

[0164] For the near-field service request from the terminal, the core network equipment bills for the near-field service. If the terminal initiates a request to stop the near-field service or the network equipment initiates a request to stop the near-field service, the core network equipment may stop billing.

[0165] If a terminal initiates a request to stop the near-field service, the terminal may send a first request to the network device, which requests the cessation of the near-field service. For example, when the terminal no longer needs the near-field service or when the terminal is far from the RIS, the terminal may send a first request to the network device, and the network device will release the RRC connection accordingly.

[0166] If a network device initiates a request to stop near-field service, the terminal receives a first message from the network device, indicating that the terminal is not within near-field range. For example, if the network device detects that the terminal is not within near-field range, it initiates a request to stop near-field service. Accordingly, the network device releases the RRC connection.

[0167] In this embodiment, the terminal can send an RRC connection establishment request to the network device and indicate that the reason for the RRC establishment is near-field service when it determines that the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal. Thus, in this embodiment, the terminal can actively initiate a near-field service request, enabling the network device to quickly identify and process the request and provide targeted near-field services to the terminal, thereby saving resources.

[0168] See Figure 2 , Figure 2 This is a flowchart of a near-field service request method provided in an embodiment of this application, applied to network devices, such as... Figure 2 As shown, it includes the following steps:

[0169] Step 201: Receive a random access request sent by the terminal, wherein the random access request includes a random access preamble.

[0170] The random access request is Msg1. In this embodiment, the core network equipment, which can be a base station composed of DU / RU and CU, determines whether the network supports near-field services. Within the network, the RIS or RU itself can also possess near-field capabilities; in particular, ultra-large aperture RIS or RUs can introduce near-field effects.

[0171] In the case of a RIS (Remote Area Configuration), if the RIS has already established a connection with the network, the RIS can report its near-field capabilities to the core network device through the network device. Correspondingly, the network device receives a second message sent by the RIS and reports the RIS's near-field capabilities to the core network device; the second message is used to report the RIS's near-field capabilities.

[0172] For network devices, near-field capabilities can be reported to the core network in the following two ways. Specifically...

[0173] (1) Radio-related capabilities (near-field capabilities) defined by DU or RU are included in SIB1. In order to ensure the integrity of system messages, DU or RU will report radio capabilities to CU, and then CU will report them to core network equipment.

[0174] (2) The CU configures radio-related capabilities for the DU or RU. For example, through the system configuration of the RRC layer, the radio-related capability information can be included in other SIB messages and then reported by the CU to the core network equipment.

[0175] Step 202: Send a random access response to the terminal, the random access response including near-field access discrimination parameters.

[0176] The random access response is Msg2. The near-field access discrimination parameters include: the difference between the distance between the terminal and the RIS or the distance between the terminal and the network device and the near-field distance; or, the distance between the terminal and the RIS or the distance between the terminal and the network device.

[0177] In obtaining the distance between the terminal and the RIS, the network device can measure the TA of the RIS and determine the distance between the terminal and the RIS based on the TA. This near-field distance can be calculated by the network device based on the Rayleigh distance, aperture, and other parameters of the antenna.

[0178] In this embodiment, the network device can send near-field related parameters to the terminal or RIS via system messages (SIB1 or SIB, such as uac-BarringInfo). These near-field related parameters are used to determine the near-field range. The RIS can send the near-field related parameters to the terminal. That is, the near-field related parameters can be sent directly to the terminal by the network device, or, if the network has deployed a RIS, the network device can send them to the RIS, which in turn sends them to the terminal. These near-field related parameters may include the Rayleigh distance of the antenna, aperture, etc. The terminal can use these near-field related parameters to calculate the near-field range. The system messages are sent by the network device or RIS using far-field beamforming.

[0179] Step 203: Receive the RRC connection establishment request sent by the terminal. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

[0180] Afterwards, the network device can send an RRC connection establishment message (Msg4) to the terminal and receive an RRC establishment completion message from the terminal, thus establishing a connection between the terminal and the network.

[0181] For the near-field service request from the terminal, the core network equipment bills for the near-field service. If the terminal initiates a request to stop the near-field service or the network equipment initiates a request to stop the near-field service, the core network equipment may stop billing.

[0182] If a terminal initiates a request to stop the near-field service, the network device can receive a first request sent by the terminal, which is used to request the cessation of the near-field service. Accordingly, the network device releases the RRC connection.

[0183] If the network device measures the TA (Target Aspect) and calculates the distance between the terminal and the RIS (Remote Area Code) or the network device, and detects that the terminal is not within the near-field range, it can initiate a request to stop near-field service. The network device can send a first message to the terminal and release the RRC (Remote Control Code) connection between the network device and the terminal. The first message is used to indicate that the terminal is not within the near-field range. In this embodiment, the first message is sent via a far-field codebook.

[0184] In this embodiment, the terminal can send an RRC connection establishment request to the network device and indicate that the reason for the RRC establishment is near-field service when it determines that the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal. Thus, in this embodiment, the terminal can actively initiate a near-field service request, enabling the network device to quickly identify and process the request and provide targeted near-field services to the terminal, thereby saving resources.

[0185] In this embodiment, from the perspective of "Near Field as a Service," the terminal actively initiates a near field service request. During the near field service process, the terminal actively reduces its movement speed and frequency, thus exhibiting near field characteristics from the moment the higher-level connection is established. Application scenarios for Near Field as a Service include... Figure 3 As shown, if the network has RIS panels or distributed base station arrays that support near-field transmission, they can serve as network public facilities. Terminals that need to improve their transmission capabilities through near-field transmission can request near-field services. For example, wireless (Virtual Reality, VR) glasses can actively approach a nearby RIS for high-capacity data transmission, or in-vehicle terminals can request to use the rooftop RIS to resist the Doppler effect caused by mobility.

[0186] See Figure 4 , Figure 4 This is a flowchart of the near-field service request method provided in the embodiments of this application, such as... Figure 4 As shown, it includes the following steps:

[0187] Step 400: RIS or base station reports near-field capability.

[0188] If a RIS in the network has already established a connection with the network side, then report the near-field related capabilities (if any).

[0189] The near-field capability of a base station can be acquired in two ways:

[0190] (1) Radio-related capabilities (near-field capabilities) defined by DU / RU are included in SIB1. In order to ensure the integrity of system messages, DU / RU will report radio capabilities to CU, and then CU will report them to core network equipment.

[0191] (2) The CU configures radio-related capabilities for the DU / RU. For example, through the system configuration of the RRC layer, the radio-related capability information can be included in other SIB messages and then reported by the CU to the core network equipment.

[0192] Step 401: Core network equipment determines whether the network supports near-field services.

[0193] The core network equipment determines whether the network supports near-field services based on the capabilities reported above. If supported, it continues with subsequent steps.

[0194] Step 402: The core network sends near-field access control parameters to the terminal via NAS. These near-field access control parameters include an access identifier and an access category, wherein:

[0195] The access identifier includes the access identity of the terminal that actively initiates the near-field service; the access category includes the access category that supports the near-field service.

[0196] Step 403: The base station sends a system message to indicate support for near-field services. Near-field related parameters are carried through system messages (SIB1 or SIB, such as uac-BarringInfo).

[0197] The system messages can be sent directly to the terminal by the base station, or they can be forwarded to the terminal by the base station through a RIS (Radio Router System). The system messages are transmitted by the base station or the RIS using a far-field beam.

[0198] Step 404: The terminal performs initial network and cell selection.

[0199] Step 405: The terminal triggers a registration request.

[0200] Step 406: The terminal sends a random access preamble (Msg1).

[0201] Step 407: Base station measures time advance (TA) to initially estimate the distance from the terminal to the RIS or base station. When estimating the distance from the terminal to the RIS, the base station needs to measure the TA value of the RIS in advance.

[0202] Step 408: The base station sends a random access response (Msg2), which includes the difference Δd between the initially estimated distance and the near-field distance.

[0203] The near-field distance is calculated by the base station using RIS or the base station's near-field parameters.

[0204] Step 409: The terminal determines whether the service conditions are met based on the near-field access control parameters and Δd in Msg2. If met, near-field service is used as the reason for establishing the RRC connection. Specifically:

[0205] The terminal determines its own identity as an access identity that can initiate near-field services by checking the access identifier;

[0206] The terminal determines whether the network supports near-field services by checking the access type;

[0207] The terminal determines whether it is currently within the near field range by using Δd:

[0208] If Δd > 0, the terminal is not within the near field range. Based on this distance value, the terminal adjusts its position and retransmits the random access preamble, thus returning to step 406.

[0209] Δd<0, the terminal is located in the near field range.

[0210] If the terminal meets the above conditions (i.e., it is an access identity that can initiate near-field services, the network supports near-field services, and the terminal is currently within the near-field range), then the terminal will map the RRC connection establishment reason to "near-field service" through the access identifier and access category.

[0211] Step 410: The terminal initiates an RRC connection establishment request (Msg3), which includes the reason for establishing a "Near Field Service" connection.

[0212] Step 411: The base station sends an RRC connection establishment message (Msg 4).

[0213] Step 412: The terminal sends an RRC establishment completion message to the base station, and the connection between the terminal and the network is established.

[0214] Step 413: The core network billing module begins near-field service billing.

[0215] Step 414: Stop the near-field service and release the connection:

[0216] Method 1: The terminal initiates a request to stop near-field service. The base station releases the connection based on the terminal's request.

[0217] Method 2: Base station initiates termination of near-field service: The base station measures the TA, calculates the distance from the terminal to the RIS or the base station, and then detects that the terminal is not in the near-field range. The base station sends a message to the terminal with the far-field codebook to indicate that it is not in the near-field range and releases the connection.

[0218] Step 415: The core network billing module stops near-field service billing.

[0219] As can be seen from the above description, the solution of this application embodiment solves the problems of how to indicate near-field services during the connection establishment process and how to make adaptive adjustments to users who initiate near-field services, thereby saving resources.

[0220] See Figure 5 , Figure 5 This is a structural diagram of the near-field service request device provided in an embodiment of this application, applied to a terminal. For example... Figure 5 As shown, the near-field service request device includes:

[0221] A first sending module 501 is configured to send a random access request to a network device, the random access request including a random access preamble; a first receiving module 502 is configured to receive a random access response sent by the network device, the random access response including near-field access discrimination parameters; a second sending module 503 is configured to send an RRC connection establishment request to the network device when it is determined, based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, that the near-field service conditions are met, the RRC connection establishment request including first information, the first information indicating that the reason for RRC establishment is near-field service.

[0222] Optionally, the near-field access discrimination parameters include:

[0223] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0224] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0225] Optionally, the near-field access control parameters include the terminal's access identifier and access type; the second sending module includes:

[0226] The first determining submodule is used to determine whether the terminal can initiate near-field service based on the access identifier;

[0227] The second determining submodule is used to determine whether the network supports near-field services based on the access type.

[0228] The first sending submodule is configured to send the RRC connection establishment request to the network device if it is determined that the terminal is within the near field range based on the difference or the distance, when it is determined that the terminal is capable of initiating near field service and the network supports near field service.

[0229] Optionally, the device further includes:

[0230] The second receiving module is used to receive the near-field access control parameters sent by the core network equipment.

[0231] Optionally, the device further includes:

[0232] The third receiving module is used to receive near-field related parameters sent by the network device or RIS through system messages, the near-field related parameters being used to determine the near-field range.

[0233] Optionally, the system message is transmitted by the network device or the RIS using a far-field beam.

[0234] Optionally, the device further includes:

[0235] The third sending module is used to send a first request to the network device, the first request being used to request the cessation of near-field service.

[0236] Optionally, the device further includes:

[0237] The fourth receiving module is used to receive a first message sent by the network device, the first message being used to indicate that the terminal is not in the near field range.

[0238] The apparatus provided in this application embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0239] See Figure 6 , Figure 6 This is a structural diagram of the near-field service request device provided in an embodiment of this application, applied to a network device. For example... Figure 6 As shown, the near-field service request device includes:

[0240] The first receiving module 601 is used to receive a random access request sent by the terminal, the random access request including a random access preamble; the first sending module 602 is used to send a random access response to the terminal, the random access response including near-field access discrimination parameters; the second receiving module 603 is used to receive an RRC connection establishment request sent by the terminal, the RRC connection establishment request including first information, the first information indicating that the reason for RRC establishment is near-field service.

[0241] Optionally, the near-field access discrimination parameters include:

[0242] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0243] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0244] Optionally, the device further includes:

[0245] The measurement module is used to measure the timing advance (TA).

[0246] The determination module is used to determine the near-field access discrimination parameters based on the TA.

[0247] Optionally, the device further includes:

[0248] The second sending module is used to send near-field related parameters to the terminal or RIS via system messages. The near-field related parameters are used to determine the near-field range.

[0249] Optionally, the system messages are transmitted using far-field beams.

[0250] Optionally, the device further includes:

[0251] The third sending module is used to send a first message to the terminal and release the RRC connection between the network device and the terminal. The first message is used to indicate that the terminal is not in the near field range.

[0252] Optionally, the device further includes:

[0253] The third receiving module is used to receive a first request sent by the terminal, the first request being used to request the termination of near-field service;

[0254] A first processing module is configured to release the RRC connection between the network device and the terminal according to the first request.

[0255] Optionally, the device further includes:

[0256] The second processing module is used to receive a second message sent by the RIS, the second message being used to report the RIS's near-field capability; and to report the RIS's near-field capability to the core network equipment; or...

[0257] The third processing module is used to report the near-field capabilities of the network devices to the core network equipment.

[0258] The apparatus provided in this application embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0259] See Figure 7 , Figure 7 This is a structural diagram of the near-field service request device provided in an embodiment of this application, applied to a terminal. For example... Figure 7 As shown, the near-field service request device includes: a processor 701 and a transceiver 702; the processor 701 is used for:

[0260] Send a random access request to the network device, the random access request including a random access preamble;

[0261] Receive a random access response sent by the network device, the random access response including near-field access discrimination parameters;

[0262] If the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, an RRC connection establishment request is sent to the network device. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

[0263] Optionally, the near-field access discrimination parameters include:

[0264] The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or,

[0265] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0266] Optionally, the near-field access control parameters include the terminal's access identifier and access type; the processor 701 is further configured to:

[0267] Based on the access identifier, determine whether the terminal can initiate near-field service;

[0268] Based on the access type, determine whether the network supports near-field services;

[0269] If it is determined that the terminal is capable of initiating near-field service and the network supports near-field service, and if the terminal is determined to be within the near-field range based on the difference or the distance, the RRC connection establishment request is sent to the network device.

[0270] Optionally, the processor 701 is further configured to:

[0271] Receive the near-field access control parameters sent by the core network equipment.

[0272] Optionally, the processor 701 is further configured to:

[0273] The system receives near-field related parameters sent by the network device or RIS via system messages. These near-field related parameters are used to determine the near-field range.

[0274] Optionally, the system message is transmitted by the network device or the RIS using a far-field beam.

[0275] Optionally, the processor 701 is further configured to:

[0276] A first request is sent to the network device, the first request being used to request the cessation of near-field services.

[0277] Optionally, the processor 701 is further configured to:

[0278] The terminal receives a first message sent by the network device, the first message being used to indicate that the terminal is not within the near field range.

[0279] The apparatus provided in this application embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0280] See Figure 8 , Figure 8 This is a structural diagram of the near-field service request device provided in an embodiment of this application, applied to a network device. For example... Figure 8 As shown, the near-field service request device includes: a processor 801 and a transceiver 802; the processor 801 is used for:

[0281] The receiving terminal sends a random access request, the random access request including a random access preamble;

[0282] Send a random access response to the terminal, the random access response including near-field access discrimination parameters;

[0283] The terminal sends an RRC connection establishment request, which includes first information indicating that the reason for RRC establishment is near-field service.

[0284] Optionally, the near-field access discrimination parameters include: the difference between the distance between the terminal and the RIS or the distance between the terminal and the network device and the near-field distance; or,

[0285] The distance between the terminal and the RIS or the distance between the terminal and the network device.

[0286] Optionally, the processor 801 is further configured to:

[0287] Measurement advance measure (TA);

[0288] The near-field access discrimination parameters are determined based on the TA.

[0289] Optionally, the processor 801 is further configured to:

[0290] Near-field related parameters are sent to the terminal or RIS via system messages. These near-field related parameters are used to determine the near-field range.

[0291] Optionally, the system messages are transmitted using far-field beams.

[0292] Optionally, the processor 801 is further configured to:

[0293] Send a first message to the terminal and release the RRC connection between the network device and the terminal. The first message is used to indicate that the terminal is not in the near field range.

[0294] Optionally, the processor 801 is further configured to:

[0295] Receive a first request sent by the terminal, the first request being used to request the termination of near-field service;

[0296] Release the RRC connection between the network device and the terminal according to the first request.

[0297] Optionally, the processor 801 is further configured to:

[0298] Receive a second message sent by the RIS, the second message being used to report the RIS's near-field capability; report the RIS's near-field capability to the core network equipment; or,

[0299] Report the near-field capabilities of the network devices to the core network equipment.

[0300] The apparatus provided in this application embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0301] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0302] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0303] This application provides a communication device, including: a memory, a processor, and a program stored in the memory and executable on the processor; the processor is configured to read the program in the memory to implement the steps in the near-field service request method as described above.

[0304] This application also provides a readable storage medium storing a program. When executed by a processor, this program implements the various processes of the aforementioned near-field service request method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here. The readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0305] This application also provides a computer program product, including computer instructions. When executed by a processor, these computer instructions implement the various processes of the above-described near-field service request method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0306] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0307] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0308] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A near-field service request method, characterized in that, Applied to terminals, including: Send a random access request to the network device, the random access request including a random access preamble; Receive a random access response sent by the network device, the random access response including near-field access discrimination parameters; If the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, a Radio Resource Control (RRC) connection establishment request is sent to the network device. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

2. The method according to claim 1, characterized in that, The near-field access discrimination parameters include: The difference between the distance between the terminal and the reconfigurable surface RIS, or the distance between the terminal and the network device, and the near-field distance; or, The distance between the terminal and the RIS or the distance between the terminal and the network device.

3. The method according to claim 2, characterized in that, The near-field access control parameters include the terminal's access identifier and access type; When it is determined that the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, sending a Radio Resource Control (RRC) connection establishment request to the network device includes: Based on the access identifier, determine whether the terminal can initiate near-field service; Based on the access type, determine whether the network supports near-field services; If it is determined that the terminal is capable of initiating near-field service and the network supports near-field service, and if the terminal is determined to be within the near-field range based on the difference or the distance, the RRC connection establishment request is sent to the network device.

4. The method according to any one of claims 1-3, characterized in that, The method further includes: Receive the near-field access control parameters sent by the core network equipment.

5. The method according to claim 3, characterized in that, The method further includes: The system receives near-field related parameters sent by the network device or RIS via system messages. These near-field related parameters are used to determine the near-field range.

6. The method according to claim 5, characterized in that, The system message is transmitted by the network device or the RIS using a far-field beam.

7. The method according to claim 1, characterized in that, The method further includes: A first request is sent to the network device, the first request being used to request the cessation of near-field services.

8. The method according to claim 1, characterized in that, The method further includes: The terminal receives a first message sent by the network device, the first message being used to indicate that the terminal is not within the near field range.

9. A near-field service request method, characterized in that, Applied to network devices, including: The receiving terminal sends a random access request, the random access request including a random access preamble; Send a random access response to the terminal, the random access response including near-field access discrimination parameters; The terminal sends an RRC connection establishment request, which includes first information indicating that the reason for RRC establishment is near-field service.

10. The method according to claim 9, characterized in that, The near-field access discrimination parameters include: The difference between the distance between the terminal and the RIS, or the distance between the terminal and the network device, and the near-field distance; or, The distance between the terminal and the RIS or the distance between the terminal and the network device.

11. The method according to claim 9, characterized in that, The method further includes: Measurement advance measure (TA); The near-field access discrimination parameters are determined based on the TA.

12. The method according to claim 9, characterized in that, The method further includes: Near-field related parameters are sent to the terminal or RIS via system messages. These near-field related parameters are used to determine the near-field range.

13. The method according to claim 12, characterized in that, The system messages are transmitted using far-field beams.

14. The method according to claim 9, characterized in that, The method further includes: Send a first message to the terminal and release the RRC connection between the network device and the terminal. The first message is used to indicate that the terminal is not in the near field range.

15. The method according to claim 9, characterized in that, The method further includes: Receive a first request sent by the terminal, the first request being used to request the termination of near-field service; Release the RRC connection between the network device and the terminal according to the first request.

16. The method according to claim 9, characterized in that, The method further includes: Receive a second message sent by the RIS, the second message being used to report the RIS's near-field capability; report the RIS's near-field capability to the core network equipment; or, Report the near-field capabilities of the network devices to the core network equipment.

17. A near-field service request device, characterized in that, Applied to terminals, including: The first sending module is used to send a random access request to the network device, the random access request including a random access preamble; The first receiving module is configured to receive a random access response sent by the network device, the random access response including near-field access discrimination parameters; The second sending module is used to send an RRC connection establishment request to the network device when it is determined that the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

18. A near-field service request device, characterized in that, Applied to network devices, including: The first receiving module is used to receive a random access request sent by the terminal, wherein the random access request includes a random access preamble; The first sending module is used to send a random access response to the terminal, the random access response including near-field access discrimination parameters; The second receiving module is used to receive the RRC connection establishment request sent by the terminal. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

19. A near-field service request device, characterized in that, Applied to a terminal, it includes: a processor and a transceiver; the processor is used for: Send a random access request to the network device, the random access request including a random access preamble; Receive a random access response sent by the network device, the random access response including near-field access discrimination parameters; If the near-field service conditions are met based on the near-field access discrimination parameters and the near-field access control parameters of the terminal, an RRC connection establishment request is sent to the network device. The RRC connection establishment request includes first information, which indicates that the reason for RRC establishment is near-field service.

20. A near-field service request device, characterized in that, Applied to network devices, including: a processor and a transceiver; the processor is used for: The receiving terminal sends a random access request, the random access request including a random access preamble; Send a random access response to the terminal, the random access response including near-field access discrimination parameters; The terminal sends an RRC connection establishment request, which includes first information indicating that the reason for RRC establishment is near-field service.

21. A communication device, comprising: A memory, a processor, and a program stored in the memory and executable on the processor; characterized in that the processor is configured to read the program from the memory to implement the steps of the near-field service request method as described in any one of claims 1 to 16.

22. A computer-readable storage medium for storing a program, characterized in that, When the program is executed by the processor, it implements the steps of the near-field service request method as described in any one of claims 1 to 16.

23. A computer program product, characterized in that, It includes computer instructions that, when executed by a processor, implement the steps of the near-field service request method as described in any one of claims 1 to 16.

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