Access methods, devices, equipment and readable storage media

Abstract

This application provides an access method, apparatus, device, and readable storage medium. The method includes: receiving a random access request, the random access request including first information, the first information indicating that a terminal requests access to a target network; determining a second network device based on the random access opportunity (RO) index of the random access request; and sending second information to the second network device and / or the terminal, the second information being used by the terminal to initiate access to the target network.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to an access method, apparatus, device, and readable storage medium. Background Technology

[0002] The vision of Sixth Generation (6G) mobile communication propels society towards "digital twins and ubiquitous intelligence," enabling the convergence and interaction of the virtual and physical worlds, supporting integrated air-space-ground-sea networks, and solving full-scenario, full-area coverage from wide-area to local-area and micro-domains. Among these, the micro-domain is a wireless network designed for short-range communication, characterized by low power consumption, ultra-low latency, ultra-high reliability, and ultra-dense deployment. It can be deployed in physical entities such as production line modules, vehicles, and even human bodies. Examples include the positioning, sensing, and drive control of robotic arms on factory assembly lines, the active intervention of vehicle sensors and driver assistance systems, and the collaboration between various sensors and actuators in body area networks. In application scenarios such as the Industrial Internet of Things (IIoT) and vehicle area networks (V2VN), the micro-domain is expected to meet performance requirements comparable to wired connections, as well as the ultra-high speed and ultra-high transmission reliability requirements in micro-domain communication scenarios such as smart homes and body area networks.

[0003] However, if the microdomain cannot receive random access requests from the terminal, but the terminal still needs to access the microdomain, how the terminal can access the microdomain is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides an access method, apparatus, device, and readable storage medium to solve the technical problem of how a terminal can access a microdomain when the microdomain cannot receive a random access request sent by the terminal, but the terminal still needs to access the microdomain.

[0005] Firstly, an access method is provided, applied to a first network device, comprising:

[0006] Receive a random access request, the random access request including first information, the first information being used to indicate that the terminal requests access to the target network;

[0007] The second network device is determined based on the random access opportunity (RO) index of the random access request;

[0008] Send second information to the second network device and / or the terminal, the second information being used by the terminal to initiate access to the target network.

[0009] Optionally, determining the second network device based on the RO index of the random access request includes:

[0010] The second network device is determined based on the RO index of the random access request and the third information;

[0011] The third information includes: the association between RO and the second network device, or the third information includes: the association between the synchronization signal block SSB and the second network device, and the association between SSB and RO.

[0012] Optionally, the first information includes: a first preamble and / or a first identifier, wherein the first identifier or the first preamble is used to indicate that the terminal requests access to the target network, and the first preamble is a preamble selected by the terminal based on a system message sent by the first network device.

[0013] Optionally, the first identifier is represented by the first preamble, the first preamble is in a first format, and the first format preamble is used by terminals that have the need to access the target network.

[0014] Optionally, the first identifier is carried in the first preamble.

[0015] Optionally, the first preamble is a preamble selected by the terminal from a second preamble based on a system message sent by the first network device, and the second preamble is a preamble that the terminal previously used to access the target network.

[0016] Optionally, the RO is associated with one or more of the second network devices in a frequency domain-first, then time domain order.

[0017] Optionally, the method further includes:

[0018] Send a fourth message to the second network device, the fourth message being used to instruct the second network device to receive the second message.

[0019] Optionally, the fourth information carries the RO index of the random access request sent by the terminal.

[0020] Optionally, the method further includes:

[0021] The fifth message is received, which indicates that the second network device is in an active state.

[0022] Optionally, the second information includes a sixth information, which is used to establish uplink synchronization between the terminal and the second network device.

[0023] Optionally, the sixth information is determined based on at least one of the first preamble, the first identifier, and the location information of the second network device.

[0024] Optionally, the sixth piece of information includes at least one of the following: timing advance, power control information, resource scheduling information, and the identifier of the terminal.

[0025] Optionally, the power control information is determined based on a power value preset by the terminal that needs to access the target network.

[0026] Secondly, an access method is provided, applied to a second network device, including:

[0027] Receive second information from the first network device, the second information being used by the terminal to initiate access to the target network;

[0028] The second network device is determined by the first network device based on the RO index of the received random access request. The random access request includes first information, which indicates that the terminal requests access to the target network.

[0029] Optionally, the method further includes:

[0030] Based on the RO resources corresponding to the RO index, determine the Random Access Radio Network Temporary Identifier (RA-RNTI).

[0031] The second information is decoded according to the RA-RNTI.

[0032] Optionally, determining the RA-RNTI based on the RO resource corresponding to the RO index includes:

[0033] RA-RNTI is determined according to the following formula;

[0034] RA-RNTI = first value + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id;

[0035] Wherein, s_id is the index of the first orthogonal frequency division multiplexing (OFDM) symbol of the RO, t_id is the index of the first time slot of the RO in the system frame, f_id is the index of the RO in the frequency domain, and ul_carrier_id is the uplink carrier used for preamble transmission.

[0036] Optionally, the method further includes:

[0037] The first network device receives a fourth message, which instructs the second network device to receive the second message.

[0038] Optionally, the method further includes:

[0039] A fifth message is sent to the first network device, the fifth message being used to indicate that the second network device is in an active state.

[0040] Thirdly, an access method is provided for use in a terminal, including:

[0041] Send a random access request to a first network device, the random access request including first information, the first information being used to indicate that the terminal requests access to the target network;

[0042] The terminal receives second information from a second network device, wherein the second network device is determined by the first network device based on the RO index of the received random access request, and the second information is used by the terminal to initiate access to the target network.

[0043] Optionally, the method further includes:

[0044] If access to the target network fails through the first network device, then a request to access the target network is made directly to the second network device; or, a request to access the target network is made again to the first network device.

[0045] Optionally, if access to the target network fails through the first network device, a new request for access to the target network is made to the first network device, including:

[0046] The second information is detected within the first detection time window;

[0047] If the second information is not detected within the first detection time window, it is determined that accessing the target network through the first network device has failed, and access to the target network is re-initiated.

[0048] Optionally, the method further includes:

[0049] The detection time window for obtaining the second information;

[0050] The first detection time window is determined based on the detection time window and the first offset obtained from the second information.

[0051] Fourthly, an access device is provided, applied to a first network device, comprising:

[0052] A first receiving module is configured to receive a random access request, the random access request including first information, the first information being used to indicate that the terminal requests access to a target network;

[0053] The first determining module is used to determine the second network device based on the random access opportunity (RO) index of the random access request;

[0054] The first sending module is used to send second information to the second network device and / or the terminal, the second information being used by the terminal to initiate access to the target network.

[0055] Fifthly, an access device is provided for use in a second network device, comprising:

[0056] The third receiving module is used to receive second information from the first network device, the second information being used by the terminal to initiate access to the target network;

[0057] The second network device is determined by the first network device based on the RO index of the received random access request. The random access request includes first information, which indicates that the terminal requests access to the target network.

[0058] Sixthly, an access device is provided for use in a terminal, comprising:

[0059] The fifth sending module is used to send a random access request to the first network device. The random access request includes first information, which indicates that the terminal requests access to the target network.

[0060] The fifth receiving module is used to receive second information from the second network device, wherein the second network device is determined by the first network device based on the RO index of the received random access request, and the second information is used by the terminal to initiate access to the target network.

[0061] A seventh aspect provides a communication device, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first, second, or third aspect.

[0062] Eighthly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first, second, or third aspect.

[0063] In this embodiment of the application, when the second network device cannot directly receive the random access request sent by the terminal, but the terminal has a need to access the target network, the terminal can receive the random access request to access the target network through the first network device, and then send second information to the second network device and / or the terminal through the first network device. The second information is used by the terminal to initiate access to the target network, thereby improving the success rate of the terminal's random access to the target network and reducing the terminal's power consumption. Attached Figure Description

[0064] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0065] Figure 1 This is a schematic diagram of a centralized micro-domain communication network deployment method;

[0066] Figure 2 This is one of the flowcharts of the access method provided in the embodiments of this application;

[0067] Figure 3 This is a second flowchart of the access method provided in the embodiments of this application;

[0068] Figure 4 This is a schematic diagram of a first network covering multiple microdomains provided in an embodiment of this application;

[0069] Figure 5a This is a diagram illustrating the one-to-one relationship between the RO and the second network device;

[0070] Figure 5b This is a schematic diagram illustrating the many-to-one relationship between the RO and the second network device;

[0071] Figure 6 This is a flowchart illustrating how a terminal, through an embodiment of this application, collaboratively accesses a second network device via a first network device.

[0072] Figure 7 This is one of the structural schematic diagrams of the access device provided in the embodiments of this application;

[0073] Figure 8 This is a second schematic diagram of the access device provided in an embodiment of this application;

[0074] Figure 9 This is a schematic diagram of a communication device provided in an embodiment of this application;

[0075] Figure 10 This is the third flowchart of the access method provided in the embodiments of this application;

[0076] Figure 11 This is the third schematic diagram of the access device provided in the embodiments of this application. Detailed Implementation

[0077] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0078] The term "comprising," and any variations thereof, used in the specification and claims of this application, is intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus. Furthermore, the use of "and / or" in the specification and claims indicates at least one of the connected objects, such as A and / or B, indicating the inclusion of A alone, B alone, or both A and B.

[0079] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0080] like Figure 1 The diagram illustrates a typical centralized micro-area communication network deployment. Fixed access points (APs) serve as the unified access points (APs) for the micro-area, managing resource allocation and interference across the entire micro-area. The AP acts as the central node for communication between terminals within the micro-area and external networks (WAN / LAN). For external networks, the AP can be viewed as a terminal; for terminals within the micro-area network, the AP can be viewed as a base station. When the micro-area is in network service mode, sensors and actuators within the micro-area, acting as terminals, can perform local service transmission and communication with the AP, and communicate between the micro-area and WAN / LAN (assuming the main network is a private network) through the AP.

[0081] The terminals involved in this application can be mobile phones, tablet computers, laptop computers (also known as notebook computers), personal digital assistants (PDAs), handheld computers, netbooks, ultra-mobile personal computers (UMPCs), mobile internet devices (MIDs), augmented reality (AR) / virtual reality (VR) devices, robots, wearable devices, vehicle-mounted devices (VUEs), pedestrian terminals (PUEs), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal is not limited in the embodiments of this application.

[0082] The first or second network device involved in this application may include access network equipment, which may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment may include AP, base station, WLAN access point, or WiFi node, etc. Base station may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the art, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.

[0083] See Figure 2The embodiments of this application provide an access method applied to a first network device, such as a base station, and the specific steps include: step 201, step 202 and step 203.

[0084] Step 201: Receive a random access request, the random access request including first information, the first information being used to indicate that the terminal requests access to the target network;

[0085] In this embodiment, the first network device corresponds to the first network, and the target network is the second network that the terminal wants to access among multiple second networks within the coverage area of ​​the first network. The first network can also be described as a wide area network or a local area network, and its coverage area may include one or more second networks. The second network can also be described as a micro-area, and the number of second networks can be one or more. In this embodiment, the number of second networks is not limited.

[0086] See Figure 4 The coverage area of ​​the first network includes four micro-domains: the first micro-domain includes AP0, the second micro-domain includes AP1, the third micro-domain includes AP2, and the fourth micro-domain includes AP3.

[0087] The first piece of information in this article can also be described as a micro-domain networking request.

[0088] Step 202: Determine the second network device based on the random access opportunity (PRACH Occasion, RO) index of the random access request;

[0089] The second network device is the access point (AP) of the target network. It is understood that when the first network device receives a random access request sent by a terminal through the first network, if the random access request does not carry the first information, the first network device processes it as an access request initiated by the terminal. However, if the random access request carries the first information, the first network device transfers the random access process initiated by the terminal to the second network device for completion.

[0090] In other words, if the coverage area of ​​the first network includes one or more micro-domains, that is, multiple second network devices, the first network device can determine the corresponding second network device of the target network based on the RO in the random access request, and then transfer the random access process initiated by the terminal to the determined second network device to complete, so that the terminal can access the target network through the second network device.

[0091] Optionally, if the second network device is unable to receive random access initiated by the terminal due to being in a dormant or inactive state, it can be activated in step 202. This allows the terminal to activate the second network device through the first network device and then access the target network through the second network device, thereby improving the success rate of random access and reducing the power used by the terminal to initiate random access, thus reducing the terminal's power consumption.

[0092] Step 203: Send second information to the second network device and / or terminal, the second information being used by the terminal to initiate access to the target network.

[0093] The second piece of information involved in this application may also be referred to as a Random Access Response (RAR).

[0094] In this embodiment, by sending second information to the second network device, the random access process initiated by the terminal is transferred to the determined second network device for completion, thereby enabling the terminal to access the target network.

[0095] In one embodiment of this application, determining the second network device based on the RO index of the random access request includes:

[0096] The second network device is determined based on the RO index of the random access request and the third information;

[0097] The third information includes the association between the RO and the second network device, such as an RO being associated with a second network device (or an AP in the second network), or an RO being associated with multiple second network devices (or APs in the second network).

[0098] See Figure 5a RO0 corresponds to the first second network device (e.g., RO0 corresponds to AP0), RO1 corresponds to the second second network device (e.g., RO1 corresponds to AP1), RO2 corresponds to the third second network device (e.g., RO2 corresponds to AP2), and RO3 corresponds to the fourth second network device (e.g., RO3 corresponds to AP3).

[0099] See Figure 5b RO0 and RO1 correspond to the first second network device (for example, RO0 and RO1 correspond to AP0), and RO2 and RO3 correspond to the second second network device (for example, RO2 and RO3 correspond to AP1).

[0100] In the embodiments of this application, the corresponding second network device can be quickly determined by the RO index of the random access request and the third information, thereby enabling the terminal to quickly access the target network through the second network device.

[0101] Alternatively, the third information includes the association between the Synchronization Signal Block (SSB) and the second network device, as well as the association between the SSB and the RO. In other words, the association between the RO and the second network device is determined based on the association between the SSB and the second network device and the association between the SSB and the RO.

[0102] Optionally, the network side can also establish an association between SSB and second network devices, where one SSB corresponds to one second network device, or multiple SSBs correspond to one second network device, or multiple SSBs correspond to multiple second network devices.

[0103] In one embodiment of this application, the first information includes: a first preamble and / or a first identifier, wherein the first identifier or the first preamble is used to indicate that the terminal requests access to the target network, and the first preamble is a preamble selected by the terminal based on a system message sent by the first network device.

[0104] The first preamble involved in this application can also be described as the first preamble.

[0105] The first identifier involved in this application can also be described as a micro-area-indicator.

[0106] Optionally, if the terminal has previously accessed the target network and is only re-initiating access to the target network as needed, the first preamble can be a preamble selected from those previously used preambles.

[0107] That is, the first preamble is the preamble selected by the terminal from the second preamble based on the system message sent by the first network device, and the second preamble is the preamble that the terminal used to access the target network before.

[0108] In one embodiment of this application, the first identifier is represented by the first preamble, the format of the first preamble is a first format, and the first format preamble is used by a terminal that has the need to access the target network; or, the first identifier is determined based on RO resources dedicated to the networking needs of the target network.

[0109] In other words, if a terminal needs to access the target network, it can choose to send a preamble in a first format to the first network device. The first network device can then determine that the terminal needs to access the target network based on this preamble. Optionally, the first format can be a preamble format added by the network side.

[0110] In one embodiment of this application, the first identifier is carried in the first preamble.

[0111] That is, the terminal can send a first preamble to the first network device, and the first network device can obtain the first identifier by parsing the first preamble. For example, the first identifier is carried in the first preamble through encoding and modulation.

[0112] In one embodiment of this application, the RO is associated with one or more second network devices in a frequency domain-first, then time domain order, such as... Figure 5a and 5b As shown.

[0113] The first network device decodes the first preamble sent by the terminal, determines the RO index used by the terminal to send the first preamble, and determines that the terminal is requesting access to the target network by identifying the first identifier in the random access request. Based on the mapping relationship between RO and the second network device, the first network device determines that the target network that the terminal can access is the target network corresponding to the second network device (e.g., the second network device). Figure 4 The micro-domain corresponding to AP1 is shown in the figure.

[0114] When the microdomain is in service mode (i.e., the AP is active), all terminals can directly initiate access requests to the AP. However, when the AP is in sleep or inactive mode, the terminal cannot wake up the AP. In this case, if the terminal needs to access the microdomain to form a microdomain network, it cannot directly initiate access to the target microdomain to the AP.

[0115] To further address the above problems, in one embodiment of this application, the method further includes:

[0116] A fourth message is sent to the determined second network device (i.e., the second network device determined in step 202). The fourth message is used to instruct the second network device to prepare to receive the second message sent by the terminal. In this way, if the second network device was previously in a dormant or inactive state, the second network device can enter the active state based on the fourth message, so that the terminal can normally access the target network.

[0117] The fourth information involved in this application can also be described as first activation indication information, or as micro-area-active.

[0118] In one embodiment of this application, if the RO and the second network device have a many-to-one mapping relationship, the fourth information carries the RO index of the terminal sending the random access request. If the RO and the second network device have a one-to-one mapping relationship, the fourth information does not carry the RO index of the terminal sending the random access request. The determined second network device can determine the RO index used by the terminal to send the first preamble based on the mapping relationship.

[0119] In one embodiment of this application, the method further includes:

[0120] The fifth message is received, which indicates that the second network device is in an active state.

[0121] The fifth information involved in this application can also be described as the determining information of the fourth information, or the confirming information of the first activation instruction information.

[0122] Optionally, after receiving the fifth information, the first network device sends the second information to the second network device and / or the terminal.

[0123] In one embodiment of this application, the second information includes sixth information, which is used to establish uplink synchronization between the terminal and the second network device.

[0124] In one embodiment of this application, the sixth information is determined based on at least one of the first preamble, the first identifier, and the location information of the second network device.

[0125] In one embodiment of this application, the sixth information includes at least one of the following:

[0126] (1) Timing Advance (TA);

[0127] (2) Power control (PC) information;

[0128] Optionally, the power control information can be determined based on the power value preset by the terminal that needs to access the target network.

[0129] (3) Resource scheduling information, such as uplink grant (UL grant);

[0130] Among them, the Physical Uplink Shared Channel (PUSCH) resources scheduled by the resource scheduling information correspond to the uplink resources allocated by the first network device to the second network device.

[0131] (4) Terminal identification, such as Temporary Cell Radio Network Temporary Identifier (TC-RNTI).

[0132] In another embodiment of this application, if the first network device does not receive the fifth information fed back by the second network device, the first network device does not send any information to the second network device. If the terminal does not detect the second information within the first detection time window of the second information, it re-requests access to the target network from the first network device. Optionally, the first detection time window can be determined by the terminal based on the detection time window and offset of the second information obtained from the network side.

[0133] In this embodiment of the application, when the second network device cannot directly receive the random access request sent by the terminal, but the terminal has a need to access the target network, the terminal can receive the random access request to access the target network through the first network device, and then send second information to the second network device and / or the terminal through the first network device. The second information is used by the terminal to initiate access to the target network, thereby improving the success rate of the terminal's random access to the target network and reducing the terminal's power consumption.

[0134] See Figure 3 The embodiments of this application provide an access method applied to a second network device, such as an AP, and the specific steps include: step 301.

[0135] Step 301: Receive second information from the first network device, the second information being used by the terminal to initiate access to the target network;

[0136] The second network device is determined by the first network device based on the RO index of the received random access request. The random access request includes first information, which indicates that the terminal requests access to the target network.

[0137] In one embodiment of this application, the method further includes:

[0138] Based on the RO resources corresponding to the RO index, determine the Random Access Radio Network Temporary Identifier (RA-RNTI);

[0139] The second information is decoded according to the RA-RNTI.

[0140] Specifically,

[0141] RA-RNTI = first value + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id

[0142] The first value can be 1, but it is not limited to this. s_id is the index of the first Orthogonal Frequency Division Multiplexing (OFDM) symbol of the RO (0≤s_id<14), t_id is the index of the first slot of the RO in the system frame (0≤t_id<80), f_id is the index of the RO in the frequency domain (0≤f_id<8), and ul_carrier_id is the UL carrier used for preamble transmission (0 indicates normal uplink carrier, 1 indicates SUL carrier).

[0143] In one embodiment of this application, the first information includes: a first preamble and / or a first identifier, wherein the first identifier or the first preamble is used to indicate that the terminal requests access to the target network, and the first preamble is a preamble selected by the terminal based on a system message sent by the first network device.

[0144] In one embodiment of this application, the second information includes sixth information, which is used to establish uplink synchronization between the terminal and the second network device.

[0145] In one embodiment of this application, the sixth information is determined based on at least one of the first preamble, the first identifier, and the location information of the second network device.

[0146] In one embodiment of this application, the sixth information includes at least one of the following:

[0147] (1) Timing advance;

[0148] (2) Power control information;

[0149] (3) Resource scheduling information, such as UL grant;

[0150] Among them, the PUSCH resources scheduled by the resource scheduling information correspond to the uplink resources allocated by the first network to the second network.

[0151] (4) Terminal identifier, for example, TC-RNTI.

[0152] In one embodiment of this application, the method further includes:

[0153] The first network device receives fourth information, which is used to instruct the second network device to receive the second information.

[0154] In one embodiment of this application, the fourth information carries the RO index of the random access request sent by the terminal.

[0155] In one embodiment of this application, the method further includes:

[0156] A fifth message is sent to the first network device, the fifth message being used to indicate that the second network device is in an active state.

[0157] In this embodiment of the application, when the second network device cannot directly receive the random access request sent by the terminal, but the terminal has a need to access the target network, the terminal can receive the random access request to access the target network through the first network device, and then send second information to the second network device and / or the terminal through the first network device. The second information is used by the terminal to initiate access to the target network, thereby improving the success rate of the terminal's random access to the target network and reducing the terminal's power consumption.

[0158] See Figure 10 This application provides an access method for a terminal, the specific steps of which include:

[0159] Step 1001: Send a random access request to the first network device, the random access request including first information, the first information being used to indicate that the terminal requests access to the target network;

[0160] Step 1002: Receive second information from the second network device, wherein the second network device is determined by the first network device based on the RO index of the received random access request, and the second information is used by the terminal to initiate access to the target network.

[0161] In one embodiment of this application, the method further includes:

[0162] If access to the target network fails through the first network device, then a request to access the target network is made directly to the second network device; or, a request to access the target network is made again to the first network device.

[0163] The terminal can send a Radio Resource Control (RRC) connection establishment request message to the second network device via resource scheduling information. The RRC connection establishment request message includes the terminal's identifier and the Cell Radio Network Temporary Identifier (C-RNTI) used. The second network device sends a contention resolution confirmation message to the terminal, which also contains the terminal's identifier. If the terminal detects the C-RNTI, it indicates that the terminal has successfully accessed the target network; otherwise, the terminal's access to the target network has failed. Since the second network device has been activated, the terminal can receive system messages sent by the second network device, and the terminal selects the appropriate preamble to initiate access to the target network.

[0164] In one embodiment of this application, if access to the target network fails through the first network device, a new request for access to the target network is made to the first network device, including:

[0165] The second information is detected within the first detection time window;

[0166] If the second information is not detected within the first detection time window, it is determined that accessing the target network through the first network device has failed, and access to the target network is re-initiated.

[0167] In one embodiment of this application, the method further includes:

[0168] The detection time window (T1) for obtaining the second information;

[0169] The first detection time window (e.g., T1+offset) is determined based on the detection time window and the first offset obtained from the second information.

[0170] Optionally, considering access timing, to improve the second information detection rate of the terminal, the detection time window of the second information is extended. The extension method is that after the terminal obtains the detection time window (T1) of the second information according to the higher layer signaling (e.g., ra-ResponseWindow), the second information is detected within the T1+offset time window, where offset is a time value configured by the network side and only effective for terminals with micro-domain communication access requirements.

[0171] In this embodiment of the application, when the second network device cannot directly receive the random access request sent by the terminal, but the terminal has a need to access the target network, the terminal can receive the random access request to access the target network through the first network device, and then send second information to the second network device and / or the terminal through the first network device. The second information is used by the terminal to initiate access to the target network, thereby improving the success rate of the terminal's random access to the target network and reducing the terminal's power consumption.

[0172] See Figure 6 The specific steps are as follows:

[0173] Step 601: The terminal obtains the system message sent by the first network device;

[0174] Step 602: The terminal sends the first preamble and the first identifier to the first network device.

[0175] The first preamble is selected by the terminal based on the system message sent by the first network device. Furthermore, the first preamble is selected by the terminal from the second preamble based on the system message sent by the first network device. The second preamble is the preamble that the terminal previously used to access the target network, thereby improving the access rate.

[0176] Step 603: The first network device sends the fourth information to the second network device.

[0177] In this embodiment, before step 603, the second network device is in a dormant or inactive state, and the second network device enters the active state according to the fourth information.

[0178] Step 604: The second network device sends the fifth message to the first network device.

[0179] Step 605: The first network device sends the second information to the terminal and the second network device.

[0180] Step 606: The terminal sends an RRC connection establishment request to the second network device.

[0181] Step 607: The second network device sends a contention resolution confirmation message to the terminal.

[0182] Step 608: The terminal sends an RRC connection establishment complete message to the second network device.

[0183] Step 609: If the terminal fails to access the target network, since the second network device has been activated, the terminal can receive the system message sent by the second network device, and the terminal selects the corresponding preamble to initiate access to the target network.

[0184] See Figure 7 This application provides an access device 700 applied to a first network device, the device comprising:

[0185] The first receiving module 701 is used to receive a random access request, the random access request including first information, the first information being used to indicate that the terminal requests access to the target network;

[0186] The first determining module 702 is used to determine the second network device based on the random access opportunity (RO) index of the random access request.

[0187] The first sending module 703 is used to send second information to the second network device and / or the terminal, the second information being used by the terminal to initiate access to the target network.

[0188] In one embodiment of this application, the first determining module 702 is further configured to: determine the second network device based on the RO index of the random access request and third information; wherein the third information includes: the association relationship between the RO and the second network device, or the third information includes: the association relationship between the synchronization signal block (SSB) and the second network device, and the association relationship between the SSB and the RO.

[0189] In one embodiment of this application, the first information includes: a first preamble and / or a first identifier, wherein the first identifier or the first preamble is used to indicate that the terminal requests access to the target network, and the first preamble is a preamble selected by the terminal based on a system message sent by the first network device.

[0190] In one embodiment of this application, the first identifier is represented by the first preamble, the format of the first preamble is a first format, and the first format preamble is used by a terminal that has the need to access the target network.

[0191] In one embodiment of this application, the first identifier is carried in the first preamble.

[0192] In one embodiment of this application, the first preamble is a preamble selected by the terminal from a second preamble based on a system message sent by the first network device, and the second preamble is a preamble that the terminal previously used to access the target network.

[0193] In one embodiment of this application, the RO is associated with one or more second network devices in a frequency domain-first, then time domain order.

[0194] In one embodiment of this application, the apparatus further includes:

[0195] The second sending module is used to send fourth information to the second network device, the fourth information being used to instruct the second network device to receive the second information.

[0196] In one embodiment of this application, the fourth information carries the RO index of the random access request sent by the terminal.

[0197] In one embodiment of this application, the apparatus further includes:

[0198] The second receiving module is used to receive the fifth information, which indicates that the second network device is in an active state.

[0199] In one embodiment of this application, the second information includes sixth information, which is used to establish uplink synchronization between the terminal and the second network device.

[0200] In one embodiment of this application, the sixth information is determined based on at least one of the first preamble, the first identifier, and the location information of the second network device.

[0201] In one embodiment of this application, the sixth information includes at least one of the following: timing advance, power control information, resource scheduling information, and terminal identifier.

[0202] Optionally, the power control information is determined based on a power value preset by the terminal that needs to access the target network.

[0203] The apparatus provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0204] See Figure 8 This application provides an access device for use in a second network device. The device 800 includes:

[0205] The third receiving module 801 is used to receive second information from the first network device, the second information being used by the terminal to initiate access to the target network;

[0206] The second network device is determined by the first network device based on the RO index of the received random access request. The random access request includes first information, which indicates that the terminal requests access to the target network.

[0207] In one embodiment of this application, the apparatus further includes:

[0208] The second determining module is used to determine the RA-RNTI based on the RO resource corresponding to the RO index;

[0209] The decoding processing module is used to decode the second information according to the RA-RNTI.

[0210] Optionally, the decoding processing module is further used to: determine RA-RNTI according to the following formula;

[0211] RA-RNTI = first value + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id;

[0212] Where s_id is the index of the first orthogonal frequency division multiplexing (OFDM) symbol of the RO, t_id is the index of the first time slot of the RO in the system frame, f_id is the index of the RO in the frequency domain, and ul_carrier_id is the uplink carrier used for preamble transmission.

[0213] In one embodiment of this application, the first information includes: a first preamble and / or a first identifier, wherein the first identifier or the first preamble is used to indicate that the terminal requests access to the target network, and the first preamble is a preamble selected by the terminal based on a system message sent by the first network device.

[0214] In one embodiment of this application, the second information includes sixth information, which is used to establish uplink synchronization between the terminal and the second network device.

[0215] In one embodiment of this application, the sixth information is determined based on at least one of the first preamble, the first identifier, and the location information of the second network device.

[0216] In one embodiment of this application, the sixth information includes at least one of the following: timing advance, power control information, resource scheduling information, and terminal identifier.

[0217] In one embodiment of this application, the apparatus further includes:

[0218] A fourth receiving module is configured to receive fourth information from the first network device, the fourth information being used to instruct a second network device to receive the second information.

[0219] In one embodiment of this application, the fourth information carries the RO index of the random access request sent by the terminal.

[0220] In one embodiment of this application, the apparatus further includes:

[0221] The fourth sending module is used to send fifth information to the first network device, the fifth information being used to indicate that the second network device is in an active state.

[0222] The apparatus provided in this application embodiment can achieve... Figure 3 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0223] See Figure 11 This application provides an access device for a terminal, the device 1100 including:

[0224] The fifth sending module 1101 is used to send a random access request to the first network device. The random access request includes first information, which indicates that the terminal requests access to the target network.

[0225] The fifth receiving module 1102 is used to receive second information from the second network device, wherein the second network device is determined by the first network device according to the RO index of the received random access request, and the second information is used by the terminal to initiate access to the target network.

[0226] In one embodiment of this application, the apparatus further includes:

[0227] The first access initiation module is configured to, if access to the target network fails through the first network device, directly request access to the target network from the second network device; or, re-request access to the target network from the first network device.

[0228] In one embodiment of this application, the apparatus further includes:

[0229] The detection module detects the second information within the first detection time window;

[0230] The second access initiation module is used to determine that accessing the target network through the first network device has failed if the second information is not detected within the first detection time window, and to re-initiate access to the target network.

[0231] In one embodiment of this application, the apparatus further includes:

[0232] The acquisition module is used to acquire the detection time window of the second information;

[0233] The determination module is used to determine the first detection time window based on the detection time window and the first offset obtained from the second information.

[0234] The apparatus provided in this application embodiment can achieve... Figure 10 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0235] like Figure 9 As shown, this application embodiment also provides a communication device 900, including a processor 901, a memory 902, and a program or instructions stored in the memory 902 and executable on the processor 901. When the program or instructions are executed by the processor 901, they implement the above-mentioned... Figure 2 or Figure 3 or Figure 10 The various processes in the method embodiments can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0236] This application embodiment also provides a readable storage medium storing a program or instructions that, when executed by a processor, implement the above-described functionality. Figure 2 or Figure 3 or Figure 10 The various processes of the method embodiments shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0237] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0238] The steps of the methods or algorithms described in this application can be implemented in hardware or by executing software instructions on a processor. The software instructions can consist of corresponding software modules, which can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, portable hard disk, read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can be housed in an ASIC. Alternatively, the ASIC can be housed in a core network interface device. Of course, the processor and storage medium can also exist as discrete components in the core network interface device.

[0239] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in this application can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium accessible to a general-purpose or special-purpose computer.

[0240] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

[0241] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, embodiments of this application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of this application can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0242] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0243] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0244] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0245] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. An access method, applied to a first network device, characterized in that, include: Receive a random access request, the random access request including first information, the first information being used to indicate that the terminal requests access to the target network; The second network device is determined based on the random access opportunity (RO) index of the random access request; Send second information to the second network device and / or the terminal, the second information being used by the terminal to initiate access to the target network; Wherein, the first network device corresponds to the first network, and the target network is the second network that the terminal wants to access among multiple second networks covered by the first network.

2. The method according to claim 1, characterized in that, The second network device is determined based on the RO index of the random access request, including: The second network device is determined based on the RO index of the random access request and the third information; The third information includes: the association between RO and the second network device, or the third information includes: the association between the synchronization signal block SSB and the second network device, and the association between SSB and RO.

3. The method according to claim 1, characterized in that, The first information includes: a first preamble and / or a first identifier, wherein the first identifier or the first preamble is used to indicate that the terminal requests access to the target network, and the first preamble is a preamble selected by the terminal based on a system message sent by the first network device.

4. The method according to claim 3, characterized in that, The first identifier is represented by the first preamble, and the format of the first preamble is a first format. The first format preamble is used by terminals that have the need to access the target network.

5. The method according to claim 3, characterized in that, The first identifier is carried in the first preamble.

6. The method according to claim 3, characterized in that, The first preamble is a preamble selected by the terminal from the second preamble based on the system message sent by the first network device. The second preamble is a preamble that the terminal previously used to access the target network.

7. The method according to claim 2, characterized in that, The RO is associated with one or more of the second network devices in a frequency domain first, then time domain order.

8. The method according to claim 1, characterized in that, The method further includes: Send a fourth message to the second network device, the fourth message being used to instruct the second network device to receive the second message.

9. The method according to claim 8, characterized in that, The fourth piece of information carries the RO index of the random access request sent by the terminal.

10. The method according to claim 8, characterized in that, The method further includes: The fifth message is received, which indicates that the second network device is in an active state.

11. The method according to claim 3, characterized in that, The second information includes the sixth information, which is used to establish uplink synchronization between the terminal and the second network device.

12. The method according to claim 11, characterized in that, The sixth piece of information is determined based on at least one of the first preamble, the first identifier, and the location information of the second network device.

13. The method according to claim 11, characterized in that, The sixth piece of information includes at least one of the following: timing advance, power control information, resource scheduling information, and the identifier of the terminal.

14. The method according to claim 13, characterized in that, The power control information is determined based on the power value preset by the terminal that needs to access the target network.

15. An access method applied to a second network device, characterized in that, include: Receive second information from the first network device, the second information being used by the terminal to initiate access to the target network; The second network device is determined by the first network device based on the RO index of the received random access request. The random access request includes first information, which indicates that the terminal requests access to the target network. Wherein, the first network device corresponds to the first network, and the target network is the second network that the terminal wants to access among multiple second networks covered by the first network.

16. The method according to claim 15, characterized in that, The method further includes: Based on the RO resources corresponding to the RO index, determine the Random Access Radio Network Temporary Identifier (RA-RNTI). The second information is decoded according to the RA-RNTI.

17. The method according to claim 16, characterized in that, The step of determining the RA-RNTI based on the RO resource corresponding to the RO index includes: RA-RNTI is determined according to the following formula; RA-RNTI = first value + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id; Wherein, s_id is the index of the first orthogonal frequency division multiplexing (OFDM) symbol of the RO, 0≤s_id<14, t_id is the index of the first time slot of the RO in the system frame, 0≤t_id<80, f_id is the index of the RO in the frequency domain, 0≤f_id<8, and ul_carrier_id is the uplink carrier used for preamble transmission. ul_carrier_id of 0 indicates a normal uplink carrier, and ul_carrier_id of 1 indicates a SUL carrier.

18. The method according to claim 15, characterized in that, The method further includes: The first network device receives a fourth message, which instructs the second network device to receive the second message.

19. The method according to claim 18, characterized in that, The method further includes: A fifth message is sent to the first network device, the fifth message being used to indicate that the second network device is in an active state.

20. An access method applied to a terminal, characterized in that, include: Send a random access request to a first network device, the random access request including first information, the first information being used to indicate that the terminal requests access to the target network; The terminal receives second information from a second network device, wherein the second network device is determined by the first network device based on the RO index of the received random access request, and the second information is used by the terminal to initiate access to the target network. Wherein, the first network device corresponds to the first network, and the target network is the second network that the terminal wants to access among multiple second networks covered by the first network.

21. The method according to claim 20, characterized in that, The method further includes: If access to the target network fails through the first network device, then a request to access the target network is made directly to the second network device; or, a request to access the target network is made again to the first network device.

22. The method according to claim 21, characterized in that, If access to the target network fails through the first network device, then a new request for access to the target network is made to the first network device, including: The second information is detected within the first detection time window; If the second information is not detected within the first detection time window, it is determined that accessing the target network through the first network device has failed, and access to the target network is re-initiated.

23. The method according to claim 22, characterized in that, The method further includes: The detection time window for obtaining the second information; The first detection time window is determined based on the detection time window and the first offset obtained from the second information.

24. An access device, applied to a first network device, characterized in that, include: A first receiving module is configured to receive a random access request, the random access request including first information, the first information being used to indicate that the terminal requests access to a target network; The first determining module is used to determine the second network device based on the random access opportunity (RO) index of the random access request; A first sending module is configured to send second information to the second network device and / or the terminal, wherein the second information is used by the terminal to initiate access to the target network; Wherein, the first network device corresponds to the first network, and the target network is the second network that the terminal wants to access among multiple second networks covered by the first network.

25. An access device applied to a second network device, characterized in that, include: The third receiving module is used to receive second information from the first network device, the second information being used by the terminal to initiate access to the target network; The second network device is determined by the first network device based on the RO index of the received random access request. The random access request includes first information, which indicates that the terminal requests access to the target network. Wherein, the first network device corresponds to the first network, and the target network is the second network that the terminal wants to access among multiple second networks covered by the first network.

26. An access device applied to a terminal, characterized in that, include: The fifth sending module is used to send a random access request to the first network device. The random access request includes first information, which indicates that the terminal requests access to the target network. The fifth receiving module is used to receive second information from the second network device, wherein the second network device is determined by the first network device according to the RO index of the received random access request, and the second information is used by the terminal to initiate access to the target network; Wherein, the first network device corresponds to the first network, and the target network is the second network that the terminal wants to access among multiple second networks covered by the first network.

27. A communication device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in any one of claims 1 to 23.

28. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as described in any one of claims 1 to 23.

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