Method, apparatus, communication device and storage medium for access control

Abstract

The embodiment of the disclosure provides an access control method applied to a base station, and the method comprises the following steps: sending an access control configuration for a multi-modal service; wherein the access control configuration is used for controlling the access initiation of a terminal based on the multi-modal service.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of wireless communication, but is not limited to the technical field of wireless communication, and particularly relates to an access control method and device, a communication device and a storage medium. BACKGROUND

[0002] Intelligent interaction is the intelligent interaction between intelligent agents (including people and things). The intelligent interaction between intelligent agents is mostly passive and depends on the input of demand. For example, the voice and visual interaction between people and smart home products is single-modal in demand input. With the evolution of wireless communication technology, multi-modal will become the norm, that is, through the input of multiple devices or multiple inputs of one device, to send to a centralized processing device or function. The centralized processing device or function comprehensively processes these inputs and obtains one or more outputs that meet the user's demand. Multiple outputs can also be multi-output through multiple devices or multi-output through one device. Multi-modal services have high requirements for the quality of service (QoS) of the network. However, the access control for multi-modal services cannot meet the high requirements of multi-modal services for the quality of service (QoS) at present. SUMMARY

[0003] Embodiments of the present disclosure disclose an access control method applied to a base station, wherein the method comprises:

[0004] sending an access control configuration for a multi-modal service;

[0005] The access control configuration is used to control the access initiation of a terminal based on the multi-modal service.

[0006] In one embodiment, the scope of the access control configuration for the multi-modal service is an area containing one or more cells.

[0007] In one embodiment, the area containing one or more cells is the signal coverage area of a public land mobile network (PLMN).

[0008] In one embodiment, the access control configuration for the multi-modal service comprises:

[0009] a first access control factor indicating whether to allow the terminal to initiate access based on the multi-modal service or block the terminal from initiating access based on the multi-modal service;

[0010] and / or,

[0011] a second access control factor indicating the probability of allowing the terminal to initiate access based on the multi-modal service.

[0012] In one embodiment, the method further comprises:

[0013] determining the access control configuration for the multi-modal service according to a network load condition.

[0014] In one embodiment, the determining the access control configuration for the multi-modal service according to a network load condition comprises at least one of:

[0015] In response to determining that the network provides service for the multi-modal service according to the network load condition, the determining the access control configuration comprises: determining the first access control factor indicating allowing the terminal to initiate access based on the multi-modal service;

[0016] In response to determining that the network does not provide service for the multi-modal service according to the network load condition, the determining the access control configuration comprises: determining the first access control factor indicating blocking the terminal from initiating access based on the multi-modal service;

[0017] In response to determining that the network provides service for part of the multi-modal service according to the network load condition, the determining the access control configuration comprises: determining a second access control factor;

[0018] In response to determining that the network provides service for part of the multi-modal service according to the network load condition, the determining the access control configuration comprises: determining the first access control factor indicating allowing the terminal to initiate access based on the multi-modal service and the second access control factor.

[0019] In one embodiment, the method further comprises:

[0020] sending the access control configuration for the multi-modal service through a system message block.

[0021] According to a second aspect of the embodiments of the present disclosure, a method for access control is provided, applied to a terminal, and the method comprises:

[0022] receiving an access control configuration for a multi-modal service;

[0023] The access control configuration is used to control initiation of access of the terminal based on the multi-modal service.

[0024] In one embodiment, the access control configuration for the multi-modal service is applicable to an area comprising one or more cells.

[0025] In one embodiment, the area comprising one or more cells is a signal coverage area of a public land mobile network (PLMN).

[0026] In one embodiment, the access control configuration for the multi-modal service comprises:

[0027] a first access control factor indicating whether to allow the terminal to initiate access based on the multi-modal service or to block the terminal from initiating access based on the multi-modal service;

[0028] and / or,

[0029] a second access control factor indicating a probability of allowing the terminal to initiate access based on the multi-modal service.

[0030] In one embodiment, the method further comprises:

[0031] determining whether to initiate access based on the multi-modal service according to the access control configuration for multi-modal service.

[0032] In one embodiment, the determining whether to initiate access based on the multi-modal service according to the access control configuration for multi-modal service comprises:

[0033] initiating access based on the multi-modal service in response to the access control configuration containing the first access control factor indicating to allow the terminal to initiate access based on the multi-modal service;

[0034] or,

[0035] not initiating access based on the multi-modal service in response to the access control configuration containing the first access control factor indicating to block the terminal from initiating access based on the multi-modal service.

[0036] In one embodiment, in response to the access control configuration containing a second access control factor, or in response to the access control configuration containing the first access control factor and the second access control factor indicating to allow the terminal to initiate access based on the multi-modal service, the method further comprises:

[0037] generating a random number within a numerical range;

[0038] the determining whether to initiate access based on the multi-modal service according to the access control configuration for multi-modal service comprises:

[0039] initiating the multi-modal service in response to the random number being greater than or equal to the second access control factor, or not initiating the multi-modal service in response to the random number being less than the second access control factor.

[0040] In one embodiment, the method further comprises:

[0041] receiving the access control configuration for multi-modal service through a system information block.

[0042] According to a third aspect of the embodiments of the present disclosure, an apparatus for access control is provided, applied to a base station, and the apparatus comprises a sending module, wherein

[0043] The sending module is configured to send an access control configuration for a multi-modal service.

[0044] The access control configuration is used to control an access initiation of a terminal based on the multi-modal service.

[0045] In one embodiment, the sending module is further configured to have an effective range of the access control configuration for the multi-modal service as an area containing one or more cells.

[0046] In one embodiment, the sending module is further configured to have the area containing one or more cells as a signal coverage area of a (PLMN).

[0047] In one embodiment, the sending module is further configured to have the access control configuration for the multi-modal service include:

[0048] a first access control factor indicating to allow the terminal to initiate access based on the multi-modal service or block the terminal from initiating access based on the multi-modal service;

[0049] and / or,

[0050] a second access control factor indicating a probability of allowing the terminal to initiate access based on the multi-modal service.

[0051] In one embodiment, the apparatus further comprises a first determining module, wherein the first determining module is further configured to:

[0052] determine the access control configuration for the multi-modal service according to a network load condition.

[0053] In one embodiment, the first determining module is further configured to determine the access control configuration for the multi-modal service according to the network load condition, including at least one of:

[0054] in response to determining that the network provides a service of the multi-modal service according to the network load condition, determine that the access control configuration contains the first access control factor indicating to allow the terminal to initiate access based on the multi-modal service;

[0055] in response to determining that the network does not provide the service of the multi-modal service according to the network load condition, determine that the access control configuration contains the first access control factor indicating to block the terminal from initiating access based on the multi-modal service.

[0056] In response to determining that the network provides services for part of the multi-modal service according to the network load status, determining the access control configuration to contain a second access control factor;

[0057] In response to determining that the network provides services for part of the multi-modal service according to the network load status, determining the access control configuration to contain: the first access control factor and the second access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service.

[0058] In one embodiment, the sending module is further configured to send the access control configuration for the multi-modal service through a system message block.

[0059] According to a fourth aspect of embodiments of the present disclosure, an access control apparatus is provided, applied to a terminal, and the apparatus includes a receiving module, wherein

[0060] The receiving module is configured to receive an access control configuration for a multi-modal service.

[0061] The access control configuration is used to control initiation of access of the terminal based on the multi-modal service.

[0062] In one embodiment, the receiving module is further configured to have an effective range of the access control configuration for the multi-modal service be an area containing one or more cells.

[0063] In one embodiment, the receiving module is further configured to have the area containing one or more cells be a signal coverage area of a public land mobile network (PLMN).

[0064] In one embodiment, the receiving module is further configured to have the access control configuration for the multi-modal service include:

[0065] A first access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service or block the terminal from initiating access based on the multi-modal service.

[0066] And / or,

[0067] A second access control factor indicating a probability of allowing the terminal to initiate access based on the multi-modal service.

[0068] In one embodiment, the apparatus further includes a second determining module, wherein the second determining module is configured to determine whether to initiate access based on the multi-modal service according to the access control configuration for the multi-modal service.

[0069] In an embodiment, the second determining module is further configured to:

[0070] initiate the access based on the multi-modal service in response to the access control configuration containing the first access control factor indicating to allow the terminal to initiate the access based on the multi-modal service.

[0071] or,

[0072] not initiate the access based on the multi-modal service in response to the access control configuration containing the first access control factor indicating to block the terminal from initiating the access based on the multi-modal service.

[0073] In an embodiment, the access control configuration contains a second access control factor, or in response to the access control configuration containing the first access control factor and the second access control factor indicating to allow the terminal to initiate the access based on the multi-modal service; the apparatus further comprises a generating module, wherein,

[0074] the generating module is configured to generate a random number within a set numerical range;

[0075] the second determining module is further configured to:

[0076] initiate random access of the multi-modal service in response to the random number being greater than or equal to the second access control factor, or not initiate random access of the multi-modal service in response to the random number being less than the second access control factor.

[0077] In an embodiment, the receiving module is further configured to receive the access control configuration for multi-modal service through a system message block.

[0078] According to a fifth aspect of embodiments of the present disclosure, a communication device is provided, the communication device comprising:

[0079] a processor;

[0080] a memory for storing executable instructions of the processor;

[0081] wherein the processor is configured to implement the method according to any of the embodiments of the present disclosure when the executable instructions are executed.

[0082] According to a sixth aspect of embodiments of the present disclosure, a computer storage medium is provided, the computer storage medium storing computer executable programs, the executable programs being executed by a processor to implement the method according to any of the embodiments of the present disclosure.

[0083] In the embodiments of the present disclosure, an access control configuration for a multi-modal service is sent, wherein the access control configuration is used to control the terminal to initiate an access based on the multi-modal service. In this way, after receiving the access control configuration sent by the base station, the terminal can determine whether to initiate the access based on the multi-modal service based on the indication of the access control configuration. Compared with the case that the terminal initiates the access based on the multi-modal service at will without receiving the access control configuration for the multi-modal service, the resource collision probability when performing random access after completing access control can be reduced, the success rate of random access can be improved, the time delay of random access can be reduced, and thus the quality of service (Qos) of the multi-modal service can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0084] Figure 1 FIG. 1 is a schematic diagram of a structure of a wireless communication system.

[0085] Figure 2 FIG. 6 is a flowchart of an intelligent interaction scenario according to an exemplary embodiment.

[0086] Figure 3 FIG. 7 is a flowchart of an access control method according to an exemplary embodiment.

[0087] Figure 4 FIG. 8 is a flowchart of an access control method according to an exemplary embodiment.

[0088] Figure 5 FIG. 9 is a flowchart of an access control method according to an exemplary embodiment.

[0089] Figure 6 FIG. 10 is a flowchart of an access control method according to an exemplary embodiment.

[0090] Figure 7 FIG. 11 is a flowchart of an access control method according to an exemplary embodiment.

[0091] Figure 8 FIG. 12 is a flowchart of an access control method according to an exemplary embodiment.

[0092] Figure 9 FIG. 13 is a flowchart of an access control method according to an exemplary embodiment.

[0093] Figure 10 FIG. 14 is a schematic diagram of an access control device according to an exemplary embodiment.

[0094] Figure 11 FIG. 15 is a schematic diagram of an access control device according to an exemplary embodiment.

[0095] Figure 12 is a block diagram of a terminal according to an exemplary embodiment.

[0096] Figure 13 is a block diagram of a base station according to an exemplary embodiment. DETAILED DESCRIPTION

[0097] The exemplary embodiments will now be described in detail with reference to the accompanying drawings. The following description is made with reference to the accompanying drawings, in which like reference numerals are used to like elements, and identical or similar components are denoted with the same reference numerals throughout the several views, unless context dictates otherwise. The following exemplary embodiments are described in enough detail to enable those having ordinary skill in the art to make and use the apparatus and methods in accordance with the exemplary embodiments. The embodiments described herein are not meant to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0098] The terminology used in the disclosure of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in the description of the present disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0099] It will be understood that, although the terms first, second, third, etc. can be used herein to describe various information, the information should not be limited by these terms. These terms are only used to distinguish one piece of information from another. For example, a first information can be termed a second information, and, similarly, a second information can be termed a first information, without departing from the scope of the present disclosure. The word "if' as used herein means "when" or "responsive to the determination" or "in response to the determination" or "upon the determination" or "when it is determined" or "upon it being determined" or "when the determination is made" or "upon the determination being made" or "when, responsive to the determination, " or "in response to the determination, " depending on the context.

[0100] For the purpose of clarity and the convenience of understanding, the terms "greater than" or "less than" are used herein when characterizing a size relationship. However, it will be understood by those skilled in the art that the term "greater than" also encompasses the meaning of "greater than or equal to," and the term "less than" also encompasses the meaning of "less than or equal to."

[0101] Reference is made to Figure 1 which shows a structure diagram of a wireless communication system according to an embodiment of the present disclosure. As shown in Figure 1 , the wireless communication system is a communication system based on a cellular mobile communication technology, and the wireless communication system can include a plurality of user equipment 110 and a plurality of base stations 120.

[0102] The user equipment 110 can be a device that provides voice and / or data connectivity to a user. The user equipment 110 can communicate with one or more core networks via a Radio Access Network (RAN), and the user equipment 110 can be an Internet of Things user equipment, such as a sensor device, a mobile phone (also known as a "cellular" phone), and a computer with an Internet of Things user equipment, for example, which can be fixed, portable, pocket, hand-held, computer-embedded, or vehicle-mounted. For example, a Station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment. Alternatively, the user equipment 110 can also be a device of an unmanned aerial vehicle. Alternatively, the user equipment 110 can also be a vehicle-mounted device, for example, it can be a vehicle-mounted computer with wireless communication function or a wireless user equipment externally connected to the vehicle-mounted computer. Alternatively, the user equipment 110 can also be a roadside device, for example, it can be a street lamp, a signal lamp, or other roadside devices with wireless communication function, etc.

[0103] The base station 120 can be a network-side device in a wireless communication system. The wireless communication system can be a 4th generation mobile communication (4G) system, also known as a Long Term Evolution (LTE) system, or the wireless communication system can also be a 5G system, also known as a New Radio system or a 5G NR system. Alternatively, the wireless communication system can also be a next generation of 5G system. In the 5G system, the access network can be referred to as an NG-RAN (New Generation-Radio Access Network).

[0104] The base station 120 can be an evolved NodeB (eNB) used in a 4G system. Alternatively, the base station 120 can also be a base station (gNB) using a centralized and distributed architecture in a 5G system. When the base station 120 uses a centralized and distributed architecture, it usually includes a central unit (CU) and at least two distributed units (DUs). The central unit is provided with a protocol stack of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a media access control (MAC) layer; and the distributed unit is provided with a physical (PHY) layer protocol stack. The specific implementation of the base station 120 is not limited in the embodiments of the present disclosure.

[0105] The base station 120 and the user equipment 110 can establish a wireless connection through a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on a fourth generation mobile communication network technology (4G) standard; or the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, such as a new radio (NR); or the wireless air interface can also be a wireless air interface based on a more next generation mobile communication network technology standard of 5G.

[0106] In some embodiments, the user equipment 110 can also establish an E2E (End to End) connection. For example, V2V (vehicle to vehicle) communication, V2I (vehicle to infrastructure) communication, and V2P (vehicle to pedestrian) communication in vehicle to everything (V2X) communication, and the like.

[0107] Here, the user equipment described above can be considered as a terminal device in the following embodiments.

[0108] In some embodiments, the wireless communication system described above can also include a network management device 130.

[0109] A plurality of base stations 120 are connected to a network management device 130. The network management device 130 can be a core network device in a wireless communication system, for example, the network management device 130 can be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the network management device can also be other core network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS), etc. The implementation form of the network management device 130 is not limited in the embodiments of the present disclosure.

[0110] In order to facilitate the understanding of any embodiment of the present disclosure, first, the application scenario of the multi-modal service is described.

[0111] Please refer to Figure 2 In an embodiment, the system of the multi-modal service includes a base station 11, a centralized processing device 12, a terminal 13, a terminal 14, and a terminal 15. In an embodiment, the terminal 13 and the terminal 14 are input devices of the multi-modal service, the centralized processing device 12 is a processing device of the multi-modal service, and the terminal 15 is an output device of the multi-modal service. Here, the terminal 13 and / or the terminal 14 can input data in multiple modalities, for example, the terminal 13 and the terminal 14 can respectively transmit data in 2 different modalities, for example, the terminal 13 collects video data and uploads, and the terminal 14 collects audio data and uploads. Here, the centralized processing device 12 can process the data input by the terminal 13 and the terminal 14, and then send the processed data to the terminal 15. Here, the data sent to the terminal 15 can be data output in multiple modalities. Here, the centralized processing device 12 can process the input data by using a machine learning algorithm, for example, using a neural network algorithm to process the input data.

[0112] Here, before the terminal 13 and / or the terminal 14 send data to the centralized processing device 12 or before the centralized processing device 12 sends data to the terminal 15, the terminal 13, the terminal 14, the terminal 15, and the centralized processing device 12 all need to establish a radio resource control (RRC) connection with the base station 11. Establishing a radio resource control (RRC) connection requires random access.

[0113] Access control is a fundamental function of radio access networks. In Long Term Evolution (LTE) networks, access control includes: the base station broadcasting access control parameters via system broadcast messages; the terminal reading the control parameters from the system broadcast messages; and then the terminal executing access control based on these control parameters.

[0114] like Figure 3 As shown, this embodiment provides an access control method applied to a base station, wherein the method includes:

[0115] Step 31: Send access control configuration for multimodal services;

[0116] The access control configuration is used to control the terminal's access initiation based on multimodal services.

[0117] This base station serves as the interface device for terminals to access the network. Base stations can be of various types, such as 3G, 4G, 5G, or other evolved base stations.

[0118] In one embodiment, the terminal may be, but is not limited to, a mobile phone, a wearable device, an in-vehicle terminal, a roadside unit (RSU), a smart home terminal, an industrial sensing device, and / or a medical device.

[0119] In one embodiment, the terminal can be one of multiple terminals corresponding to a multimodal service. For example, the terminal can be... Figure 2 Terminal 12 is used for data input in multimodal services. This terminal can also be... Figure 2 Terminal 15 is used for data output for multimodal services.

[0120] In one embodiment, a multimodal service can be a service that inputs and / or outputs data in multiple modalities. This can be achieved by using multiple terminals to input data in each modality separately, or by using a single terminal to input data in each modality. Similarly, data can be output through multiple terminals to output data in each modality separately, or by using a single terminal to output data in each modality. Here, data in one modality can be data with predetermined features. For example, data with pose features can be data in one modality, while data with facial features can be data in another modality.

[0121] In one embodiment, the base station can broadcast the access control configuration for the multi-modal service through a system message. Here, after the base station broadcasts the access control configuration for the multi-modal service through the system message, the terminal reads the access control configuration in the system message, and then the terminal controls the access initiation of the multi-modal service based on the access control configuration.

[0122] For example, the terminal controls the access initiation of the multi-modal service based on the access control configuration, including but not limited to:

[0123] When the access control configuration indicates that the terminal is allowed to initiate the service based on the multi-modal service, initiating the random access procedure triggered by the multi-modal service;

[0124] and / or,

[0125] When the access control configuration indicates that the terminal is prohibited to initiate the service based on the multi-modal service, prohibiting the initiation of the random access procedure triggered by the multi-modal service.

[0126] In one embodiment, the base station can send the access control configuration for the multi-modal service to the terminal through a radio resource control (RRC) message when the base station establishes a radio resource control (RRC) connection with the terminal. The terminal reads the access control configuration in the radio resource control (RRC) message, and then the terminal controls the access initiation of the multi-modal service based on the access control configuration. Here, the access control configuration for the multi-modal service is sent through the radio resource control (RRC) message, which improves the compatibility of the radio resource control (RRC) message.

[0127] In one embodiment, the access control configuration for the multi-modal service can be sent when the base station has output data of the multi-modal service to be transmitted to the terminal. In this way, when the terminal receives the access control configuration for the multi-modal service, it can initiate random access after completing access control based on the access control configuration, establish a radio resource control (RRC) connection between the terminal and the base station, and timely obtain the output data of the multi-modal service to be transmitted from the base station.

[0128] In one embodiment, the terminal can send an access control configuration acquisition request message for the multi-modal service to the base station when the terminal has input data of the multi-modal service to be transmitted to the base station. The base station sends the access control configuration for the multi-modal service to the terminal after receiving the acquisition request message. In this way, when the terminal has output data of the multi-modal service to be transmitted, it can timely access the base station and send the output data of the multi-modal service to be transmitted to the base station, and send the input data of the multi-modal service to the centralized processing device through the base station for processing.

[0129] In an embodiment, the access control configuration for the multi-modal service carries resource information used by the terminal to initiate access based on the multi-modal service. Here, the resource information can include time-frequency domain resources and / or a preamble sequence used for access. Here, initiating access using the resource information carried by the access control configuration can reduce interference caused by resource collision when different terminals use resources when transmitting data.

[0130] In an embodiment, the multi-modal service can be a multi-party authentication payment service. For example, terminal A needs to obtain face data of terminal B and voice data of terminal C for authentication to complete the payment service. When terminal A performs the payment service, terminal A can send an authentication request to the base station through the core network. After receiving the authentication request, the base station sends an access control configuration for the multi-modal service to the B terminal in the idle state and the C terminal in the idle state of the payment service, and the B terminal and the C terminal initiate access based on the multi-modal service based on the access control configuration after receiving the access control configuration for the multi-modal service. After accessing the network, the B terminal sends face data to the base station, and the C terminal sends voice data to the base station.

[0131] In an embodiment, the access control configuration for the multi-modal service can be sent when a multi-modal event is detected.

[0132] In an embodiment, the occurrence of a multi-modal event can be that the current time is a set time. For example, the security service is a multi-modal service. In the security system, the terminal needs to transmit sound data and image data to multiple processing devices of the security service when it arrives at the set time point. At this time, the terminal will send an access control configuration for the multi-modal service before the set time.

[0133] In an embodiment, different multi-modal services can be distinguished by an identity (ID). The identity (ID) of different multi-modal services is different. For example, the identity (ID) of the first multi-modal service is "001"; the identity (ID) of the second multi-modal service is "010". In an embodiment, the access control configuration for the multi-modal service carries the identity (ID) of the multi-modal service. For example, the identity of the multi-modal service of intelligent driving is "001", and the access control configuration for the multi-modal service of intelligent driving carries the identity (ID) information of "001"; the identity of the multi-modal service of remote medical treatment is "010", and the access control configuration for the multi-modal service of remote medical treatment carries the identity (ID) information of "010". Here, according to different identities (IDs), the terminal can determine whether the access control configuration received is the access control configuration sent by the base station to the terminal.

[0134] In one embodiment, the access control configuration for the multi-modal service can be configured to prohibit all terminals from initiating access based on the multi-modal service or configured to allow all terminals to initiate access based on the multi-modal service. For example, all terminals can be allowed to initiate access based on the multi-modal service when the time-frequency resources used by the base station for the terminals to initiate the multi-modal service are greater than a resource threshold. All terminals can be prohibited from initiating access based on the multi-modal service when the time-frequency resources used by the base station for the terminals to initiate the multi-modal service are less than the resource threshold.

[0135] In one embodiment, the access control configuration for the multi-modal service can be configured to prohibit part of the terminals from initiating access based on the multi-modal service or configured to allow part of the terminals to initiate access based on the multi-modal service. For example, part of the terminals can be allowed to initiate access based on the multi-modal service when the time-frequency resources used by the base station for the terminals to initiate the multi-modal service are greater than a resource threshold. Part of the terminals can be prohibited from initiating access based on the multi-modal service when the time-frequency resources used by the base station for the terminals to initiate the multi-modal service are less than the resource threshold.

[0136] In one embodiment, the access control configuration for the multi-modal service can be configured to prioritize the terminals to initiate access based on the multi-modal service. For example, a first terminal has a higher priority to initiate access based on the multi-modal service than a second terminal. The first terminal can have a higher priority to initiate access based on the multi-modal service than the second terminal.

[0137] In one embodiment, initiating access based on the multi-modal service can be the terminals initiating random access based on the multi-modal service to establish a radio resource control (RRC) connection with the base station. Here, the terminals of the multi-modal service trigger a random access procedure to establish a radio resource control (RRC) connection by initiating random access to achieve data transmission of the multi-modal service.

[0138] In one embodiment, the access control configuration for the multi-modal service has an effective range of an area comprising one or more cells. Here, the area comprising one or more cells can be an area covered by signals of a terrestrial network or a non-terrestrial network. In one embodiment, the area comprising one or more cells is a signal coverage area of a public land mobile network (PLMN).

[0139] In this embodiment, after receiving the access control configuration sent by the base station, the terminal can determine whether to initiate the access of the terminal based on the multi-modal service based on the indication of the access control configuration. Compared with the case where the terminal randomly initiates the access based on the multi-modal service without receiving the access control configuration for the multi-modal service, the resource collision probability when performing random access after completing access control can be reduced, the success rate of random access can be improved, the delay of random access can be reduced, and thus the quality of service (Qos) of the multi-modal service can be improved.

[0140] In one embodiment, the access control configuration for the multi-modal service includes:

[0141] a first access control factor indicating whether to allow the terminal to initiate access based on the multi-modal service or block the terminal from initiating access based on the multi-modal service;

[0142] and / or,

[0143] a second access control factor indicating a probability of allowing the terminal to initiate access based on the multi-modal service.

[0144] In one embodiment, the first access control factor and / or the second access control factor can be carried in an indication field of a system message block. Here, when the indication field corresponding to the first access control factor carries a first identifier, the terminal is allowed to initiate access based on the multi-modal service; when the indication field corresponding to the first access control factor carries a second identifier, the terminal is blocked from initiating access based on the multi-modal service.

[0145] In one embodiment, the first access control factor is indicated by a cell barred indication in the system message block. Here, when the cell barred indication is set to "barred", the terminal is blocked from initiating access based on the multi-modal service; when the cell barred indication is set to "not barred", the terminal is allowed to initiate access based on the multi-modal service.

[0146] In one embodiment, the probability of the terminal initiating access based on the multi-modal service is indicated by an access control barring factor in the system message block. Here, the access control barring factor can be configured to different probability values. For example, a first probability value, a second probability value, and a third probability value, etc. Here, the probability values are set in a numerical range.

[0147] In one embodiment, when the terminal initiates the access based on the multi-modal service, a random number can be generated from the set value range. When the random number is greater than the probability value indicated by the access control factor, the terminal is allowed to initiate the access based on the multi-modal service; when the random number is less than the probability value indicated by the access control factor, the terminal is blocked from initiating the access based on the multi-modal service. In this way, the number of terminals initiating the access based on the multi-modal service can be controlled, the load of the base station can be reduced, and the wireless communication quality of the multi-modal service after the terminal initiates the multi-modal service can be ensured. Here, the set value range can be between 0 and 1. The random number can be a randomly generated value between 0 and 1, such as 0.1, 0.3, 0.4, and the like.

[0148] In one embodiment, the access control configuration for the multi-modal service only carries the first access control factor. In one embodiment, when the available wireless resources of the base station are less than the resource threshold, the first access control factor indicates that the terminal is allowed to initiate the access based on the multi-modal service. When the available wireless resources of the base station are greater than the resource threshold, the first access control factor indicates that the terminal is blocked from initiating the access based on the multi-modal service.

[0149] In one embodiment, after the terminal receives the access control configuration, the terminal initiates the access based on the multi-modal service in response to the access control configuration containing the first access control factor indicating that the terminal is allowed to initiate the access based on the multi-modal service. The terminal does not initiate the access based on the multi-modal service in response to the access control configuration containing the first access control factor indicating that the terminal is blocked from initiating the access based on the multi-modal service. In this way, the base station can allow or block the terminal from initiating the access based on the multi-modal service through the access control configuration, and the service quality of the multi-modal service can be ensured.

[0150] In one embodiment, the access control configuration for the multi-modal service only carries the second access control factor. After the terminal receives the access control configuration, the terminal generates a random number from a set value range. In response to the random number being greater than or equal to the second access control factor, the terminal initiates the random access of the multi-modal service, or in response to the random number being less than the second access control factor, the terminal does not initiate the random access of the multi-modal service. In this way, the number of terminals initiating the access based on the multi-modal service can be controlled, the load of the base station can be reduced, and the service quality of the multi-modal service after the terminal initiates the multi-modal service can be ensured.

[0151] In one embodiment, the access control configuration for the multi-modal service carries both the first access control factor and the second access control factor. After receiving the access control configuration, the terminal does not initiate the access based on the multi-modal service in response to the access control configuration containing the first access control factor indicating blocking the terminal from initiating the access based on the multi-modal service. A random number is generated in a numerical range in response to the access control configuration containing the first access control factor indicating allowing the terminal to initiate the access based on the multi-modal service. The random access of the multi-modal service is initiated in response to the random number being greater than or equal to the second access control factor, or the random access of the multi-modal service is not initiated in response to the random number being less than the second access control factor. In this way, the control of blocking or allowing the terminal to initiate the access based on the multi-modal service is more accurate, and the quality of service of the multi-modal service after the terminal initiates the multi-modal service is ensured.

[0152] As shown in FIG. 4, the embodiment provides a method of access control, which further includes: Figure 4

[0153] Step 41, determining the access control configuration for the multi-modal service according to the network load status.

[0154] The network load status can be described by at least one of the following parameters:

[0155] The number of terminals connected to the network;

[0156] The number of remaining available resources of the network;

[0157] The load rate ratio between the current load rate of the terminal and the rated load rate;

[0158] The ratio between the current capacity of the network and the rated capacity.

[0159] In one embodiment, the number of terminals connected to the base station is greater than the number threshold, and the network load status is the first status; the number of terminals connected to the base station is less than the number threshold, and the network load status is the second status. Here, when the network load status is the first status, the initiation based on the multi-modal service can be blocked to relieve the situation of excessive network load and ensure the quality of service of the service. When the network load status is the second status, the terminal can be allowed to initiate the access based on the multi-modal service to improve the utilization rate of the wireless resource.

[0160] ​In one embodiment, the number of remaining available resources can be the number of wireless resources available to the base station for scheduling communications. When the number of wireless resources available to the base station for scheduling communications is greater than the set resource threshold, the network load condition is a third condition; and when the number of wireless resources available to the base station for scheduling communications is less than the set resource threshold, the network load condition is a fourth condition. Here, when the network load condition is the third condition, the terminal can be allowed to initiate access based on the multi-modal service, improving the utilization of wireless resources. When the network load condition is the fourth condition, the terminal can be blocked from initiating access based on the multi-modal service, alleviating the condition of excessive network load, and ensuring the quality of service of the service.

[0161] In one embodiment, when the load rate ratio between the current load rate of the terminal and the rated load rate is within a threshold range, the network load condition is a fifth condition. Here, when the network load condition is the fifth condition, part of the terminals can be allowed to initiate access based on the multi-modal service. Here, the terminal can be instructed to allow the terminal to initiate access based on the multi-modal service, while being instructed with a probability of the terminal initiating access based on the multi-modal service. After receiving the access control configuration, the terminal generates a random number within a set value range. In response to the random number being greater than or equal to the probability, the terminal initiates access based on the multi-modal service, or in response to the random number being less than the probability, the terminal does not initiate access based on the multi-modal service. In this way, the base station can only allow part of the terminals to access, further controlling the number of terminals initiating access based on the multi-modal service, so that the control of the terminals initiating access based on the multi-modal service is more precise.

[0162] In one embodiment, the access control configuration for the multi-modal service is determined according to the network load condition, including at least one of:

[0163] In response to determining that the network provides the service of the multi-modal service according to the network load condition, the access control configuration includes a first access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service;

[0164] In response to determining that the network does not provide the service of the multi-modal service according to the network load condition, the access control configuration includes a first access control factor indicating that the terminal is blocked from initiating access based on the multi-modal service;

[0165] In response to determining that the network provides part of the service of the multi-modal service according to the network load condition, the access control configuration includes a second access control factor;

[0166] In response to determining that the network provides part of the service of the multi-modal service according to the network load condition, the access control configuration includes a first access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service and a second access control factor.

[0167] In one embodiment, the network is determined to provide the service of the multi-modal service when the number of terminals connected to the base station is less than the number threshold or the radio resources available for scheduling the terminals for communication is greater than the set resource threshold.

[0168] In one embodiment, the access control configuration is determined to include the first access control factor indicating to block the terminals from initiating the access based on the multi-modal service in response to the number of terminals connected to the base station being greater than the number threshold or the radio resources available for scheduling the terminals for communication being less than the set resource threshold.

[0169] In one embodiment, the network is determined to provide the service of the multi-modal service when the number of terminals connected to the base station is less than the number threshold or the radio resources available for scheduling the terminals for communication is greater than the set resource threshold.

[0170] In one embodiment, the access control configuration is determined to include the first access control factor indicating to block the terminals from initiating the access based on the multi-modal service in response to the number of terminals connected to the base station being less than the number threshold or the radio resources available for scheduling the terminals for communication being greater than the set resource threshold.

[0171] In one embodiment, the network providing the service of the partial multi-modal service can be the network providing the service of the partial multi-modal service of the terminals. For example, there are N terminals that need to initiate the access based on the multi-modal service, and M of the N terminals are allowed to initiate the access based on the multi-modal service. Here, M is greater than N, and M and N are positive integers.

[0172] In one embodiment, the access control configuration is determined to include the second access control factor in response to the network providing the service of the partial multi-modal service of the terminals.

[0173] In one embodiment, the access control configuration is determined to include the first access control factor indicating to allow the terminals to initiate the access based on the multi-modal service and the second access control factor in response to the network providing the service of the partial multi-modal service of the terminals.

[0174] As shown in FIG. 5, the method for access control in the embodiment further includes: Figure 5 In step 51, the access control configuration for the multi-modal service is sent through the system information block.

[0175] Here, the access control configuration for the multi-modal service can be sent through the system information block SIB1 and / or SIB2.

[0176]

[0177] ​In one embodiment, different access control factors in the access control configuration can be carried in different system information blocks. For example, a first access control factor is carried in system information block SIB1, and a second access control factor is carried in system information block SIB2. The system information block SIB1 can be transmitted before the system information block SIB2. The following is explained by signaling structures of the system information block SIB1 and the system information block SIB2:

[0178] In one embodiment, the signaling structure of the system information block SIB1 is as follows:

[0179]

[0180] Here, different multi-modal services can be distinguished by different identities. "MMX" is an identity of a first multi-modal service, and "MMY" is an identity of a second multi-modal service. The system information block SIB1 can contain identities of all multi-modal services that need to be configured and are associated with the access control configuration. For example, the system information block SIB1 can also contain an identity "MMZ" of a third multi-modal service and an identity "MMX" of a fourth multi-modal service. Here, the first access control factor is carried in the SIB1. Here, the first access control factor of the first multi-modal service is defined by "cellBarred_MMX ENUMERATED{barred, notBarred}", and the first access control factor of the second multi-modal service is defined by "cellBarred_MMY ENUMERATED{barred, notBarred}". Wherein, "barred" corresponds to indicating allowing the terminal to initiate access based on the multi-modal service. "notBarred" corresponds to indicating blocking the terminal from initiating access based on the multi-modal service.

[0181] In one embodiment, the signaling structure of the system information block SIB2 is as follows:

[0182]

[0183] Here, different multi-modal services can be distinguished by different identities. "MMX" is the identity of the first multi-modal service, and "MMY" is the identity of the second multi-modal service. The identities of all multi-modal services that need to be configured and are associated with the access control configuration can be contained in the SIB1. For example, the identity "MMZ" of a third multi-modal service and the identity "MMX" of a fourth multi-modal service can also be contained in the SIB1. Here, the second access control factor is carried in the SIB2. Here, the second access control factor of the first multi-modal service is defined by "ac-BarringForMMX AC-BarringConfig OPTIONAL,--Need OP", and the second access control factor of the second multi-modal service is defined by "ac-BarringForMMY AC-BarringConfig OPTIONAL--Need OP". Among them, the corresponding specific probability value can be selected from P00 to P95 of "ac-BarringFactor ENUMERATED{p00,p05,p10,p15,p20,p25,p30,p40,p50,p60,p70,p75,p80,p85,p90,p95}".

[0184] In one embodiment, different access control factors in the access control configuration can be carried in the same system message block. For example, the first access control factor and the second control factor are carried in the system message block SIB1, which is illustrated below by the signaling structure of the system message block SIB1:

[0185] In one embodiment, the signaling structure of the system message block SIB1 is as follows:

[0186]

[0187] Here, different multi-modal services can be distinguished by different identities. "MMX" is the identity of the first multi-modal service, and "MMY" is the identity of the second multi-modal service. The identities of all multi-modal services that need to be configured and are associated with the access control configuration can be contained in the SIB1. For example, the identity "MMZ" of a third multi-modal service and the identity "MMX" of a fourth multi-modal service can also be contained in the SIB1. Here, the first access control factor is carried in the SIB1. Here, the first access control factor of the first multi-modal service is defined by "cellBarred_MMX ENUMERATED{barred, notBarred}", and the first access control factor of the second multi-modal service is defined by "cellBarred_MMY ENUMERATED{barred, notBarred}". Among them, "barred" corresponds to indicating that the terminal is allowed to initiate access based on the multi-modal service. "notBarred" corresponds to indicating that the terminal is blocked from initiating access based on the multi-modal service. Here, the second access control factor is carried in the SIB1. Here, the second access control factor of the first multi-modal service is defined by "ac-BarringForMMX AC-BarringConfig OPTIONAL, -- Need OP", and the second access control factor of the second multi-modal service is defined by "ac-BarringForMMY AC-BarringConfig OPTIONAL -- Need OP". Among them, the corresponding specific probability value can be selected from P00 to P95 of "ac-BarringFactor ENUMERATED{p00, p05, p10, p15, p20, p25, p30, p40, p50, p60, p70, p75, p80, p85, p90, p95}".

[0188] As shown in FIG. 6, in an embodiment, a method for access control is provided, which is applied to a terminal, and the method comprises the following steps. Figure 6

[0189] Step 61, receiving an access control configuration for a multi-modal service;

[0190] Among them, the access control configuration is used to control the terminal to initiate access based on the multi-modal service.

[0191] In an embodiment, the base station is an interface device for the terminal to access the network. The base station can be various types of base stations, such as a base station of a third generation mobile communication (3G) network, a base station of a fourth generation mobile communication (4G) network, a base station of a fifth generation mobile communication (5G) network, or other evolved base stations.

[0192] ​In an embodiment, the terminal can be, but is not limited to, a mobile phone, a wearable device, a vehicle-mounted terminal, a road side unit (RSU), a smart home terminal, an industrial sensor device, a medical device, and / or the like.

[0193] In an embodiment, the terminal can be one of a plurality of terminals corresponding to a multi-modal service. For example, the terminal can be a terminal 12 for data input of the multi-modal service in FIG. 1. Figure 2 The terminal can also be a terminal 15 for data output of the multi-modal service in FIG. 1. Figure 2 The terminal can also be a terminal 15 for data output of the multi-modal service in FIG. 1.

[0194] In an embodiment, the multi-modal service can be a service in which data input is performed in a plurality of modalities and / or data output is performed in a plurality of modalities. Here, data input in each modality can be performed through a plurality of terminals, respectively, or through one terminal. Here, data output in each modality can be performed through a plurality of terminals, respectively, or through one terminal. Here, data in one modality can be data having a predetermined characteristic. For example, data having a pose characteristic can be data in one modality, and data having a face characteristic can be data in another modality.

[0195] In an embodiment, the base station can broadcast an access control configuration for the multi-modal service through a system message. Here, after the base station broadcasts the access control configuration for the multi-modal service through the system message, the terminal reads the access control configuration in the system message, and then the terminal controls initiation of access based on the multi-modal service according to the access control configuration.

[0196] For example, the terminal controls initiation of access based on the multi-modal service of the terminal according to the access control configuration, including but not limited to:

[0197] When the access control configuration indicates that the terminal is allowed to initiate a service based on the multi-modal service, initiating a random access procedure triggered by the multi-modal service;

[0198] and / or,

[0199] When the access control configuration indicates that the terminal is prohibited from initiating a service based on the multi-modal service, prohibiting initiation of a random access procedure triggered by the multi-modal service.

[0200] In one embodiment, the base station can send the access control configuration for the multi-modal service to the terminal through a radio resource control (RRC) message when the RRC connection is established between the terminal and the base station. The terminal reads the access control configuration in the RRC message, and then the terminal initiates the access based on the multi-modal service according to the access control configuration. Here, the access control configuration for the multi-modal service is sent through the RRC message, which improves the compatibility of the RRC message.

[0201] In one embodiment, the access control configuration for the multi-modal service can be sent when the base station has output data of the multi-modal service to be transmitted to the terminal. In this way, when the terminal receives the access control configuration for the multi-modal service, the terminal can initiate random access based on the access control configuration after completing the access control, establish the RRC connection between the terminal and the base station, and timely obtain the output data of the multi-modal service to be transmitted from the base station.

[0202] In one embodiment, the terminal can send an access control configuration request message for the multi-modal service to the base station when the terminal has input data of the multi-modal service to be transmitted to the base station. The base station sends the access control configuration for the multi-modal service to the terminal after receiving the access control configuration request message. In this way, when the terminal has output data of the multi-modal service to be transmitted, the terminal can timely access the base station and send the output data of the multi-modal service to be transmitted to the base station, and send the input data of the multi-modal service to the centralized processing device through the base station for processing.

[0203] In one embodiment, the access control configuration for the multi-modal service carries resource information used by the terminal to initiate the access based on the multi-modal service. Here, the resource information can include time-frequency domain resources and / or a preamble sequence used for the access. Here, the access initiated using the resource information carried by the access control configuration can reduce the interference caused by resource collision when different terminals use resources when transmitting data.

[0204] In an embodiment, the multi-modal service can be a multi-party authenticated payment service. For example, the A terminal needs to obtain the face data of the B terminal and the voice data of the C terminal for authentication to complete the payment service. When the A terminal performs the payment service, the A terminal can send an authentication request to the base station through the core network. After receiving the authentication request, the base station sends an access control configuration for the multi-modal service to the B terminal and the C terminal in the idle state of the payment service, and the B terminal and the C terminal initiate multi-modal service-based access based on the access control configuration after receiving the access control configuration for the multi-modal service. After accessing the network, the B terminal sends the face data to the base station, and the C terminal sends the voice data to the base station.

[0205] In an embodiment, the access control configuration for the multi-modal service can be sent when it is detected that a multi-modal event occurs.

[0206] In an embodiment, the occurrence of a multi-modal event can be that the current time is a set time. For example, the security service is a multi-modal service. In the security system, the terminal needs to transmit sound data and image data to multiple processing devices of the security service when it arrives at the set time point. At this time, the terminal will send an access control configuration for the multi-modal service before the set time.

[0207] In an embodiment, different multi-modal services can be distinguished by an identity (ID). The identity (ID) of different multi-modal services is different. For example, the identity (ID) of the first multi-modal service is "001"; the identity (ID) of the second multi-modal service is "010". In an embodiment, the access control configuration for the multi-modal service carries the identity (ID) of the multi-modal service. For example, the identity of the multi-modal service of intelligent driving is "001", and the access control configuration for the multi-modal service of intelligent driving carries the identity (ID) information of "001"; the identity of the multi-modal service of remote medical treatment is "010", and the access control configuration for the multi-modal service of remote medical treatment carries the identity (ID) information of "010". Here, according to different identities (IDs), the terminal can determine whether the access control configuration received is the access control configuration sent by the base station to the terminal.

[0208] In an embodiment, the access control configuration for the multi-modal service can be used to configure all terminals to prohibit multi-modal service-based access initiation or to configure all terminals to allow multi-modal service-based access initiation. For example, when the time-frequency resources used by the base station for the terminal to initiate the multi-modal service are greater than a resource threshold, all terminals are allowed to initiate multi-modal service-based access. When the time-frequency resources used by the base station for the terminal to initiate the multi-modal service are less than the resource threshold, all terminals are prohibited from initiating multi-modal service-based access.

[0209] In an embodiment, the access control configuration for the multi-modal service can be configured to prohibit the partial terminal from initiating the access based on the multi-modal service or configured to allow the partial terminal to initiate the access based on the multi-modal service. For example, the partial terminal can be allowed to initiate the access based on the multi-modal service when the time-frequency resource used by the base station for the terminal to initiate the access based on the multi-modal service is greater than a resource threshold. The partial terminal can be prohibited from initiating the access based on the multi-modal service when the time-frequency resource used by the base station for the terminal to initiate the access based on the multi-modal service is less than the resource threshold.

[0210] In an embodiment, the access control configuration for the multi-modal service can be configured to indicate the priority of the terminal to initiate the access based on the multi-modal service. For example, the first terminal can have a higher priority to initiate the access based on the multi-modal service than the second terminal. The first terminal can have a higher priority to initiate the access based on the multi-modal service than the second terminal.

[0211] In an embodiment, the initiating the access based on the multi-modal service can be the terminal initiating the random access based on the multi-modal service and establishing a radio resource control (RRC) connection with the base station. Here, the terminal based on the multi-modal service triggers a random access procedure to establish the RRC connection by initiating the random access, and implements the data transmission of the multi-modal service.

[0212] In an embodiment, the access control configuration for the multi-modal service has an effective range of an area including one or more cells. Here, the area including one or more cells can be an area covered by a signal of a terrestrial network or a non-terrestrial network. In an embodiment, the area including one or more cells is a signal coverage area of a public land mobile network (PLMN).

[0213] In this embodiment, after receiving the access control configuration sent by the base station, the terminal can determine whether to initiate the access based on the multi-modal service based on the indication of the access control configuration. Compared with the case where the terminal initiates the access based on the multi-modal service at will without receiving the access control configuration for the multi-modal service, the probability of resource collision when performing the random access after completing the access control can be reduced, the success rate of the random access can be improved, the delay of the random access can be reduced, and thus the quality of service (Qos) of the multi-modal service can be improved.

[0214] In an embodiment, the access control configuration for the multi-modal service includes:

[0215] a first access control factor indicating whether to allow the terminal to initiate the access based on the multi-modal service or block the terminal from initiating the access based on the multi-modal service;

[0216] and / or,

[0217] A second access control factor, indicating a probability of allowing the terminal to initiate access based on the multi-modal service.

[0218] In one embodiment, the first access control factor and / or the second access control factor can be carried in an indication field of a system message block. Here, when the indication field corresponding to the first access control factor carries a first identity, the terminal is allowed to initiate access based on the multi-modal service; when the indication field corresponding to the first access control factor carries a second identity, the terminal is blocked from initiating access based on the multi-modal service.

[0219] In one embodiment, the first access control factor is indicated by a cell barred indication in the system message block. Here, when the cell barred indication is set to "barred", the terminal is blocked from initiating access based on the multi-modal service; when the cell barred indication is set to "not barred", the terminal is allowed to initiate access based on the multi-modal service.

[0220] In one embodiment, a probability of the terminal initiating access based on the multi-modal service is indicated by an access control barring factor in the system message block. Here, the access control barring factor can be configured to different probability values. For example, a first probability value, a second probability value, and a third probability value, etc. Here, the probability values are set in a numerical range.

[0221] In one embodiment, when the terminal initiates access based on the multi-modal service, a random number can be generated from the numerical range. When the random number is greater than the probability value indicated by the access control factor, the terminal is allowed to initiate access based on the multi-modal service; when the random number is less than the probability value indicated by the access control factor, the terminal is blocked from initiating access based on the multi-modal service. In this way, the number of terminals initiating access based on the multi-modal service can be controlled, the load of the base station can be reduced, and the wireless communication quality of the multi-modal service after the terminal initiates the multi-modal service can be ensured. Here, the numerical range can be between 0 and 1. The random number can be a randomly generated value between 0 and 1, such as 0.1, 0.3, and 0.4, etc.

[0222] In one embodiment, the access control configuration for the multi-modal service only carries the first access control factor. In one embodiment, when the available wireless resources of the base station are less than a resource threshold, the first access control factor indicates that the terminal is allowed to initiate access based on the multi-modal service. When the available wireless resources of the base station are greater than the resource threshold, the first access control factor indicates that the terminal is blocked from initiating access based on the multi-modal service.

[0223] In one embodiment, after receiving the access control configuration, the terminal initiates access based on the multimodal service in response to the access control configuration including a first access control factor indicating that the terminal is allowed to initiate access based on the multimodal service. Alternatively, after receiving the access control configuration, the terminal may also refrain from initiating access based on the multimodal service in response to the access control configuration including a first access control factor indicating that the terminal is blocked from initiating access based on the multimodal service. In this way, the base station can use the access control configuration to allow or block the terminal from initiating access based on the multimodal service, ensuring the quality of service for the multimodal service.

[0224] In one embodiment, the access control configuration for multimodal services only carries a second access control factor. Upon receiving this access control configuration, the terminal generates a random number within a set value range. If the random number is greater than or equal to the second access control factor, random access to the multimodal service is initiated; otherwise, if the random number is less than the second access control factor, random access to the multimodal service is not initiated. This controls the number of terminals initiating access based on multimodal services, reduces the load on the base station, and ensures the quality of service for multimodal services after a terminal initiates access.

[0225] In one embodiment, the access control configuration for multimodal services carries both a first access control factor and a second access control factor. Upon receiving this access control configuration, the terminal, in response to the access control configuration including a first access control factor indicating that the terminal should block access based on the multimodal service, will not initiate access based on the multimodal service. In response to the access control configuration including a first access control factor indicating that the terminal should allow access based on the multimodal service, a random number within a set value range will be generated. In response to the random number being greater than or equal to the second access control factor, random access to the multimodal service will be initiated; or, in response to the random number being less than the second access control factor, random access to the multimodal service will not be initiated. This allows for more granular control over whether to block or allow the terminal to initiate access based on the multimodal service, ensuring the quality of service for the multimodal service after it is initiated by the terminal.

[0226] like Figure 7 As shown, this embodiment provides an access control method, which further includes:

[0227] Step 71: Determine whether to initiate access based on multimodal services according to the access control configuration for multimodal services.

[0228] In one embodiment, the first access control factor may be carried in the indicator field of a system message block. Here, when the indicator field corresponding to the first access control factor carries a first identifier, the terminal is allowed to initiate access based on multimodal services; when the indicator field corresponding to the first access control factor carries a second identifier, the terminal is blocked from initiating access based on multimodal services.

[0229] In one embodiment, a cell-barred indication in a system message block is used to indicate the first access control factor. Here, when the cell-barred indication is set to "barred", the base station is blocked from initiating access based on multimodal services; when the cell-barred indication is set to "notbarred", the base station is allowed to initiate access based on multimodal services.

[0230] In one embodiment, an access control blocking factor in a system message block indicates the probability of a terminal initiating access based on a multimodal service. Here, the access control blocking factor can be configured with different probability values, such as a first probability value, a second probability value, and a third probability value. The probability values ​​are within a set range. In one embodiment, when a terminal initiates access based on a multimodal service, a random number can be generated from this set range. When the random number is greater than the probability value indicated by the access control factor, the terminal is allowed to initiate access based on the multimodal service; when the random number is less than the probability value indicated by the access control factor, the terminal's access based on the multimodal service is blocked. This controls the number of terminals initiating access based on multimodal services, reduces the load on the base station, and ensures the wireless communication quality of the multimodal service after it is initiated. The set range can be between 0 and 1. The random number can be a value randomly generated between 0 and 1, such as 0.1, 0.3, and 0.4.

[0231] like Figure 8 As shown, this embodiment provides an access control method. In step 71, based on the access control configuration for multimodal services, it is determined whether to initiate access based on multimodal services, including:

[0232] Step 81: In response to the access control configuration including a first access control factor indicating that the terminal is allowed to initiate access based on multimodal services, initiate access based on multimodal services;

[0233] or,

[0234] In response to the access control configuration including a first access control factor indicating that the blocking terminal should not initiate access based on multimodal services, access based on multimodal services is not initiated.

[0235] In one embodiment, the first access control factor may be carried in the indicator field of a system message block. Here, when the indicator field corresponding to the first access control factor carries a first identifier, access based on multimodal services is initiated; when the indicator field corresponding to the first access control factor carries a second identifier, access based on multimodal services is not initiated.

[0236] In one embodiment, the first access control factor is indicated by a cell barred indication in a system message block. Here, when the cell barred indication is set to "barred", the access based on the multi-modal service is not initiated; when the cell barred indication is set to "not barred", the access based on the multi-modal service is initiated.

[0237] As shown in FIG. 7, in one embodiment, a method for access control is provided. In response to the access control configuration containing the second access control factor, or in response to the access control configuration containing the first access control factor and the second access control factor indicating that the terminal is allowed to initiate the access based on the multi-modal service, the method further comprises: Figure 9

[0238] Step 91, generating a random number within a set value range;

[0239] Step 71, determining whether to initiate the access based on the multi-modal service according to the access control configuration for the multi-modal service, comprising:

[0240] Step 92, in response to the random number being greater than or equal to the second access control factor, initiating the access of the multi-modal service, or in response to the random number being less than the second access control factor, not initiating the access of the multi-modal service.

[0241] In one embodiment, the response to the access control configuration containing the second access control factor comprises that the access control configuration contains the second access control factor but does not contain the first access control factor.

[0242] Here, the set value range can be between 0 and 1. The random number can be a randomly generated value between 0 and 1, such as 0.1, 0.3, 0.4, etc.

[0243] In one embodiment, the second access control factor can be carried in an indication field of a system message block.

[0244] ​In one embodiment, the access control barring factor in the system information block is used to indicate the probability of initiating the access based on the multi-modal service. Here, the access control barring factor can be configured with different probability values. For example, a first probability value, a second probability value, a third probability value, and so on. Here, the probability values are in a set numerical range. In one embodiment, when the terminal initiates the access based on the multi-modal service, a random number can be generated from the set numerical range. When the first access control factor indicates to allow the initiation of the access based on the multi-modal service and the random number is greater than the probability value indicated by the access control factor, the access based on the multi-modal service is initiated; when the first access control factor indicates to allow the initiation of the access based on the multi-modal service and the random number is less than the probability value indicated by the access control factor, the access based on the multi-modal service is not initiated. In this way, the number of terminals initiating the access based on the multi-modal service can be controlled, the load of the base station can be reduced, and the wireless communication quality of the multi-modal service after the terminal initiates the multi-modal service can be ensured. It should be noted that when the first access control factor blocks the initiation of the access based on the multi-modal service, the terminal does not initiate the access based on the multi-modal service.

[0245] In one embodiment, different access control factors in the access control configuration can be carried in different system information blocks. For example, the first access control factor is carried in the system information block SIB1, and the second access control factor is carried in the system information block SIB2. The system information block SIB1 can be transmitted first, and then the system information block SIB2 is transmitted. The signaling structure of the system information block SIB1 and the system information block SIB2 is described below:

[0246] In one embodiment, the signaling structure of the system information block SIB1 is as follows:

[0247]

[0248] Here, different multi-modal services can be distinguished by different identities. "MMX" is the identity of the first multi-modal service, and "MMY" is the identity of the second multi-modal service. The identities of all multi-modal services that need to be configured and are associated with the access control configuration can be contained in the SIB1. For example, the identity "MMZ" of a third multi-modal service and the identity "MMX" of a fourth multi-modal service can also be contained in the SIB1. Here, the first access control factor is carried in the SIB1. Here, the first access control factor of the first multi-modal service is defined by "cellBarred_MMX ENUMERATED{barred, notBarred}", and the first access control factor of the second multi-modal service is defined by "cellBarred_MMY ENUMERATED{barred, notBarred}". Among them, "barred" corresponds to indicating that the terminal is allowed to initiate access based on the multi-modal service. "notBarred" corresponds to indicating that the terminal is blocked from initiating access based on the multi-modal service.

[0249] In one embodiment, the signaling structure of the system message block SIB2 is as follows:

[0250]

[0251] Here, different multi-modal services can be distinguished by different identities. "MMX" is the identity of the first multi-modal service, and "MMY" is the identity of the second multi-modal service. The identities of all multi-modal services that need to be configured and are associated with the access control configuration can be contained in the SIB1. For example, the identity "MMZ" of a third multi-modal service and the identity "MMX" of a fourth multi-modal service can also be contained in the SIB1. Here, the second access control factor is carried in the SIB2. Here, the second access control factor of the first multi-modal service is defined by "ac-BarringForMMX AC-BarringConfig OPTIONAL,--Need OP", and the second access control factor of the second multi-modal service is defined by "ac-BarringForMMY AC-BarringConfig OPTIONAL--Need OP". Among them, the corresponding specific probability value can be selected from P00 to P95 of "ac-BarringFactor ENUMERATED{p00,p05,p10,p15,p20,p25,p30,p40,p50,p60,p70,p75,p80,p85,p90,p95}".

[0252] In one embodiment, different access control factors in the access control configuration can be carried in the same system information block. For example, the first access control factor and the second control factor are carried in the system information block SIB1, which is illustrated by the signaling structure of the system information block SIB1 as follows:

[0253] In one embodiment, the signaling structure of the system information block SIB1 is as follows:

[0254]

[0255] Here, different multi-modal services can be distinguished by different identities. "MMX" is the identity of the first multi-modal service, and "MMY" is the identity of the second multi-modal service. The system information block SIB1 can contain the identities of all multi-modal services that need to be configured and are associated with the access control configuration. For example, the system information block SIB1 can also contain the identity "MMZ" of a third multi-modal service and the identity "MMX" of a fourth multi-modal service. Here, the first access control factor is carried in the SIB1. Here, the first access control factor of the first multi-modal service is defined by "cellBarred_MMX ENUMERATED{barred, notBarred}", and the first access control factor of the second multi-modal service is defined by "cellBarred_MMY ENUMERATED{barred, notBarred}". Among them, "barred" corresponds to indicating that the terminal is allowed to initiate access based on the multi-modal service. "notBarred" corresponds to indicating that the terminal is blocked from initiating access based on the multi-modal service. Here, the second access control factor is carried in the SIB1. Here, the second access control factor of the first multi-modal service is defined by "ac-BarringForMMX AC-BarringConfig OPTIONAL, -- Need OP", and the second access control factor of the second multi-modal service is defined by "ac-BarringForMMY AC-BarringConfig OPTIONAL -- Need OP". Among them, the specific probability value can be selected from P00 to P95 of "ac-BarringFactor ENUMERATED{p00, p05, p10, p15, p20, p25, p30, p40, p50, p60, p70, p75, p80, p85, p90, p95}".

[0256] As shown in Figure 10 , in the present embodiment, an access control device is provided, which is applied to a base station, and the device comprises a sending module 101, wherein,

[0257] The sending module 101 is configured to send an access control configuration for a multi-modal service.

[0258] The access control configuration is used to control the terminal's initiation of access based on the multi-modal service.

[0259] In one embodiment, the sending module 101 is further configured to have the access control configuration for the multi-modal service have a scope of an area containing one or more cells.

[0260] In one embodiment, the sending module 101 is further configured to have the area containing one or more cells be a signal coverage area of a (PLMN).

[0261] In one embodiment, the sending module 101 is further configured to have the access control configuration for the multi-modal service include:

[0262] A first access control factor indicating allowing the terminal to initiate access based on the multi-modal service or blocking the terminal from initiating access based on the multi-modal service;

[0263] and / or,

[0264] A second access control factor indicating a probability of allowing the terminal to initiate access based on the multi-modal service.

[0265] In one embodiment, the apparatus further includes a first determining module 102, wherein the first determining module 102 is further configured to:

[0266] Determine the access control configuration for the multi-modal service according to a network load condition.

[0267] In one embodiment, the first determining module 102 is further configured to determine the access control configuration for the multi-modal service according to the network load condition, including at least one of:

[0268] In response to determining that the network provides a service of the multi-modal service according to the network load condition, determine that the access control configuration contains a first access control factor indicating allowing the terminal to initiate access based on the multi-modal service;

[0269] In response to determining that the network does not provide a service of the multi-modal service according to the network load condition, determine that the access control configuration contains a first access control factor indicating blocking the terminal from initiating access based on the multi-modal service;

[0270] In response to determining that the network provides a service of part of the multi-modal service according to the network load condition, determine that the access control configuration contains a second access control factor;

[0271] In response to determining that the network provides services of the partial multi-modal service according to the network load condition, the access control configuration includes: a first access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service and a second access control factor.

[0272] In one embodiment, the sending module 101 is further configured to send the access control configuration for the multi-modal service through a system message block.

[0273] As shown in Figure 11 In one embodiment, the device for access control is provided, and is applied to a terminal, wherein the device includes a receiving module 111, wherein

[0274] The receiving module 111 is configured to receive the access control configuration for the multi-modal service.

[0275] The access control configuration is used to control the terminal to initiate access based on the multi-modal service.

[0276] In one embodiment, the receiving module 111 is further configured to: the scope of the access control configuration for the multi-modal service is an area including one or more cells.

[0277] In one embodiment, the receiving module 111 is further configured to: the area including one or more cells is a signal coverage area of a public land mobile network (PLMN).

[0278] In one embodiment, the receiving module 111 is further configured to: the access control configuration for the multi-modal service includes:

[0279] The first access control factor indicates that the terminal is allowed to initiate access based on the multi-modal service or blocks the terminal from initiating access based on the multi-modal service.

[0280] And / or,

[0281] The second access control factor indicates a probability of allowing the terminal to initiate access based on the multi-modal service.

[0282] In one embodiment, the device further includes a second determining module 112, wherein the second determining module 112 is configured to determine whether to initiate access based on the multi-modal service according to the access control configuration for the multi-modal service.

[0283] In one embodiment, the second determining module 112 is further configured to:

[0284] In response to the access control configuration including the first access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service, initiate access based on the multi-modal service.

[0285] Or,

[0286] In response to the access control configuration containing the first access control factor indicating blocking the terminal from initiating the access based on the multi-modal service, the access based on the multi-modal service is not initiated.

[0287] In one embodiment, the access control configuration contains the second access control factor, or in response to the access control configuration containing the first access control factor and the second access control factor indicating allowing the terminal to initiate the access based on the multi-modal service, the apparatus further comprises a generating module 113, wherein,

[0288] The generating module 113 is configured to generate a random number within a set numerical range.

[0289] The second determining module 112 is further configured to:

[0290] In response to the random number being greater than or equal to the second access control factor, initiate the random access of the multi-modal service, or in response to the random number being less than the second access control factor, do not initiate the random access of the multi-modal service.

[0291] In one embodiment, the receiving module 111 is further configured to receive the access control configuration for the multi-modal service through a system message block.

[0292] As to the apparatus in the above embodiments, the specific manners in which the various modules perform operations have been described in detail in the embodiments of the method, and thus will not be described in detail here.

[0293] Embodiments of the present disclosure provide a communication device, the communication device comprising:

[0294] a processor;

[0295] a memory for storing processor-executable instructions;

[0296] The processor is configured to implement the method of any of the embodiments of the present disclosure when the processor executes the executable instructions.

[0297] The processor can include various types of storage media, which is a non-transitory computer storage medium, and can continue to store information stored thereon after the communication device is powered off.

[0298] The processor can be connected with the memory through a bus or the like, for reading the executable program stored on the memory.

[0299] Embodiments of the present disclosure also provide a computer storage medium, wherein the computer storage medium stores a computer executable program, and the executable program is executed by the processor to implement the method of any of the embodiments of the present disclosure.

[0300] With reference to the apparatus in the above-described embodiments, a specific manner in which each module performs operations has been described in detail in embodiments of the method, and thus will not be described in detail here.

[0301] Figure 12 is a block diagram of a user equipment (UE) 800 illustrated in accordance with an example embodiment. The user equipment 800 can be, for example, a mobile phone, a computer, a digital broadcast user equipment, a messaging equipment, a game console, a tablet equipment, a medical equipment, a fitness equipment, a personal digital assistant, or the like.

[0302] With reference to Figure 12 The user equipment 800 can include one or more of the following components: a processing component 802, a memory component 804, a power component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0303] The processing component 802 usually governs overall operations of the user equipment 800, such as operations associated with displaying, making phone calls, data communications, camera operations, and recording operations. The processing component 802 can include one or more processors 820 to execute instructions to complete all or part of steps of the above-described methods. In addition, the processing component 802 can include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0304] The memory component 804 is configured to store various types of data to support operations of the user equipment 800. Examples of these data include instructions for any applications or methods operating on the user equipment 800, contact data, phonebook data, messages, pictures, videos, and so on. The memory component 804 can be realized by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0305] The power component 806 provides power to various components of the user equipment 800. The power component 806 can include a power supply management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the user equipment 800.

[0306] The multimedia component 808 includes a screen to provide an output interface between the user and the user device 800. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, the multimedia component 808 includes a front camera and / or a back camera. When the user device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the back camera can receive external multimedia data. Each of the front and back cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0307] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC) to receive an external audio signal when the user device 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 also includes a speaker to output audio signals.

[0308] The I / O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0309] The sensor component 814 includes one or more sensors to provide various state assessments for the user device 800. For example, the sensor component 814 can detect an open / closed state of the user device 800, relative positioning of components, such as a display and a keypad of the user device 800, a change in position of the user device 800 or a component of the user device 800, presence or absence of user contact with the user device 800, a change in orientation of the user device 800 or acceleration / deceleration of the user device 800, and a temperature change of the user device 800. The sensor component 814 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 814 can further include a light sensor, such as a CMOS or CCD image sensor, for use in an imaging application. In some embodiments, the sensor component 814 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0310] The communication component 816 is configured to facilitate wired or wireless communication between the user equipment 800 and other devices. The user equipment 800 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra-WideBand (UWB) technology, Bluetooth (BT) technology and other technologies.

[0311] In an exemplary embodiment, the user equipment 800 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic elements, for performing the above-described methods.

[0312] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, is also provided, which can be executed by the processor 820 of the user equipment 800 to complete the above-described methods. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0313] As shown in Figure 13 An embodiment of the present disclosure shows a structure of a base station. For example, the base station 900 can be provided as a network-side device. Referring to Figure 13 , the base station 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by a memory 932, for storing instructions, such as application programs, executable by the processing component 922. The application programs stored in the memory 932 can include one or more modules each corresponding to a set of instructions. In addition, the processing component 922 is configured to execute the instructions to perform any of the above-described methods of the application on the base station.

[0314] The base station 900 can also include a power supply component 926 configured to perform power management for the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to a network, and an input output (I / O) interface 958. The base station 900 can operate based on an operating system stored in the memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0315] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0316] It is to be understood that the application is not limited to the precise details of design and construction that have been described and exemplified above and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is indicated by the appended claims, rather than by the embodiments that have been described and exemplified.

Claims

1. A method of access control, applied to a base station, wherein, The method comprises: determining an access control configuration for a multi-modal service according to a network load condition; sending the access control configuration; wherein the access control configuration is used to control whether a terminal initiates an access initiation based on the multi-modal service; the access control configuration comprises a first access control factor indicating that the terminal is allowed to initiate an access based on the multi-modal service or is blocked from initiating an access based on the multi-modal service; and / or a second access control factor indicating a probability that the terminal is allowed to initiate an access based on the multi-modal service; wherein the second access control factor is used for the terminal to generate a random number within a set numerical range; in response to the random number being greater than or equal to the second access control factor, the terminal is allowed to initiate an access based on the multi-modal service, or in response to the random number being less than the second access control factor, the terminal is blocked from initiating an access based on the multi-modal service; wherein, in response to a load rate ratio between a current load rate of the terminal and a rated load rate being within a threshold range, it is determined that the network allows part of the terminals to initiate an access based on the multi-modal service, and the access control configuration comprises the first control access factor and the second access control factor indicating that the terminal is allowed to initiate an access based on the multi-modal service.

2. The method of claim 1, wherein, The access control configuration for the multi-modal service has an effective range of an area comprising one or more cells.

3. The method of claim 2, wherein, The area comprising one or more cells is a signal coverage area of a public land mobile network (PLMN).

4. The method of claim 1, wherein, The determining of the access control configuration for the multi-modal service according to the network load condition comprises at least one of the following: in response to determining that the network provides a service of the multi-modal service according to the network load condition, determining that the access control configuration comprises the first access control factor indicating that the terminal is allowed to initiate an access based on the multi-modal service; in response to determining that the network does not provide a service of the multi-modal service according to the network load condition, determining that the access control configuration comprises the first access control factor indicating that the terminal is blocked from initiating an access based on the multi-modal service; in response to determining that the network provides a service of part of the multi-modal service according to the network load condition, determining that the access control configuration comprises the second access control factor; in response to determining that the network provides a service of part of the multi-modal service according to the network load condition, determining that the access control configuration comprises the first access control factor and the second access control factor indicating that the terminal is allowed to initiate an access based on the multi-modal service.

5. The method according to any one of claims 1 to 4, wherein, The method further comprises: sending the access control configuration for the multi-modal service through a system message block.

6. A method of access control, applied to a terminal, wherein, The method comprises: receiving an access control configuration for a multi-modal service; the access control configuration is determined by a base station according to a network load condition; The access control configuration is used for controlling whether the terminal initiates the access based on the multi-modal service. The access control configuration includes a first access control factor indicating whether the terminal is allowed to initiate the access based on the multi-modal service or is blocked from initiating the access based on the multi-modal service, and / or a second access control factor indicating a probability of allowing the terminal to initiate the access based on the multi-modal service. The second access control factor is used for the terminal to generate a random number within a set numerical range. In response to the random number being greater than or equal to the second access control factor, the terminal is allowed to initiate the access based on the multi-modal service, or in response to the random number being less than the second access control factor, the terminal is blocked from initiating the access based on the multi-modal service. The load ratio between the current load ratio of the terminal and the rated load ratio is within a threshold range, the base station determines that the network allows part of the terminals to initiate the access based on the multi-modal service, and the access control configuration includes a first control access factor and a second access control factor indicating whether the terminal is allowed to initiate the access based on the multi-modal service.

7. The method of claim 6, wherein, The access control configuration for the multi-modal service has an effective range of an area including one or more cells.

8. The method of claim 7, wherein, The area including one or more cells is a signal coverage area of a public land mobile network (PLMN).

9. The method of claim 6, wherein, The method further includes: In response to the access control configuration including the first access control factor indicating whether the terminal is allowed to initiate the access based on the multi-modal service, initiating the access based on the multi-modal service. Or, In response to the access control configuration including the first access control factor indicating that the terminal is blocked from initiating the access based on the multi-modal service, not initiating the access based on the multi-modal service.

10. The method according to any one of claims 6 to 9, wherein, The method further includes: Receiving the access control configuration for the multi-modal service through a system message block.

11. An apparatus for access control, applied to a base station, wherein, The apparatus includes a first determination module and a sending module, wherein The first determination module is configured to determine an access control configuration for a multi-modal service according to a network load condition. The sending module is configured to send the access control configuration. The access control configuration is used for controlling whether a terminal initiates the access based on the multi-modal service. The access control configuration includes a first access control factor indicating whether the terminal is allowed to initiate the access based on the multi-modal service or is blocked from initiating the access based on the multi-modal service, and / or a second access control factor indicating a probability of allowing the terminal to initiate the access based on the multi-modal service. The second access control factor is used for the terminal to generate a random number within a set numerical range. In response to the random number being greater than or equal to the second access control factor, the terminal is allowed to initiate the access based on the multi-modal service, or in response to the random number being less than the second access control factor, the terminal is blocked from initiating the access based on the multi-modal service. The access control configuration includes a first access control factor indicating that the terminal is allowed to initiate the access based on the multi-modal service or a second access control factor indicating a probability of allowing the terminal to initiate the access based on the multi-modal service.

12. The apparatus of claim 11, wherein, The sending module is further configured to: the range of the access control configuration for the multi-modal service is an area including one or more cells.

13. The apparatus of claim 12, wherein, The sending module is further configured to: the area including one or more cells is a signal coverage area of a PLMN.

14. The apparatus of claim 11, wherein, The first determining module is further configured to: the access control configuration for the multi-modal service is determined according to the network load condition, including at least one of the following: In response to determining that the network provides the multi-modal service according to the network load condition, the access control configuration includes the first access control factor indicating that the terminal is allowed to initiate the access based on the multi-modal service; In response to determining that the network does not provide the multi-modal service according to the network load condition, the access control configuration includes the first access control factor indicating that the terminal is blocked from initiating the access based on the multi-modal service; In response to determining that the network provides part of the multi-modal service according to the network load condition, the access control configuration includes the second access control factor; In response to determining that the network provides part of the multi-modal service according to the network load condition, the access control configuration includes the first access control factor indicating that the terminal is allowed to initiate the access based on the multi-modal service and the second access control factor.

15. The apparatus of any one of claims 11 to 14, wherein, The sending module is further configured to: send the access control configuration for the multi-modal service through a system message block.

16. An apparatus for access control, applied to a terminal, wherein, The apparatus includes a receiving module, wherein, The receiving module is configured to: receive an access control configuration for a multi-modal service; the access control configuration is determined by a base station according to a network load condition; The access control configuration is used to control whether the terminal initiates the access based on the multi-modal service; the access control configuration includes: a first access control factor indicating that the terminal is allowed to initiate the access based on the multi-modal service or is blocked from initiating the access based on the multi-modal service; and / or a second access control factor indicating a probability of allowing the terminal to initiate the access based on the multi-modal service; wherein the second access control factor is used for the terminal to generate a random number in a set value range; in response to the random number being greater than or equal to the second access control factor, the terminal is allowed to initiate the access based on the multi-modal service, or in response to the random number being less than the second access control factor, the terminal is blocked from initiating the access based on the multi-modal service; The load ratio between the current load ratio of the terminal and the rated load ratio is within a threshold range, the base station determines that a part of terminals are allowed to initiate access based on the multi-modal service, and the access control configuration includes a first control access factor and a second access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service.

17. The apparatus of claim 16, wherein, The receiving module is further configured to: the scope of the access control configuration for the multi-modal service is an area including one or more cells.

18. The apparatus of claim 17, wherein, The receiving module is further configured to: the area including one or more cells is a signal coverage area of a public land mobile network (PLMN).

19. The apparatus of claim 16, wherein, The device further includes a second determining module configured to: in response to the access control configuration including the first access control factor indicating that the terminal is allowed to initiate access based on the multi-modal service, initiating access based on the multi-modal service; or, in response to the access control configuration including the first access control factor indicating that the terminal is blocked from initiating access based on the multi-modal service, not initiating access based on the multi-modal service.

20. The apparatus of any one of claims 16 to 19, wherein, The receiving module is further configured to receive the access control configuration for the multi-modal service through a system message block.

21. A communication device, wherein, It includes: an antenna; a memory; a processor connected with the antenna and the memory respectively, configured to control the transceiving of the antenna by executing computer executable instructions stored in the memory, and capable of implementing the method provided in any one of claims 1 to 5 or claims 6 to 10.

22. A computer storage medium storing computer executable instructions, which, when executed by a processor, can implement the method provided in any one of claims 1 to 5 or claims 6 to 10.

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