Access method and device, electronic equipment, storage medium and program product

Abstract

Embodiments of the present application provide an access method and device, electronic equipment, storage medium and program product. The method is applied to a network side, and includes sending first indication information to a terminal device. The first indication information is used to indicate a target random access preamble sequence corresponding to a priority access request. The above method can improve the success access rate of the terminal device in a priority communication scenario.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an access method, apparatus, electronic device, storage medium, and program product. Background Technology

[0002] In priority communication scenarios, if there is contention for access resources when a terminal device connects to the base station, it may lead to connection failure, resulting in a low success rate for terminal devices in priority communication scenarios. For example, priority communication scenarios could include distress communication scenarios and / or emergency communication scenarios. Improving the success rate of terminal devices in priority communication scenarios is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] This application provides an access method, apparatus, electronic device, storage medium, and program product to address the technical problem of low success rate of terminal devices in priority communication scenarios.

[0004] In a first aspect, embodiments of this application provide an access method, the method being applied to the network side, the method comprising:

[0005] Send a first indication message to the terminal device, the first indication message being used to indicate the target random access preamble sequence corresponding to the priority access request.

[0006] In one possible implementation, the target random access preamble sequence includes at least one of the following:

[0007] In a contention-based random access preamble, the preamble sequence indicated for priority access requests;

[0008] Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used.

[0009] In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests;

[0010] A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests;

[0011] An additional preamble is indicated, which is used to prioritize access requests;

[0012] An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

[0013] In one possible implementation, the priority access request is a maritime communication priority access request.

[0014] In one possible implementation, the first indication information is carried within the system information SI.

[0015] In one possible implementation, the method further includes:

[0016] Send a second indication information to the terminal device. The second indication information is an indication information obtained by updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

[0017] In one possible implementation, a second instruction message is sent to the terminal device in at least one of the following situations:

[0018] After receiving the priority access request sent by the first terminal, or when the time interval between the time when the priority access request was received and the current time is greater than the preset time interval;

[0019] Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the previously received priority access request was sent by any terminal in the cell where the terminal device is located.

[0020] In one possible implementation, the second indication information is carried within the first SI, which is information obtained by updating system information.

[0021] In one possible implementation, the method further includes:

[0022] Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

[0023] In one possible implementation, sending first instruction information to the terminal device includes:

[0024] If it is determined that the coverage area of ​​the network side includes the target area, the first indication information is sent to the terminal device.

[0025] In one possible implementation, the method further includes:

[0026] If it is determined that the coverage area of ​​the network side does not include the target area, a third indication information is sent to the terminal device, the third indication information being used to indicate that the target random access preamble sequence does not exist.

[0027] In one possible implementation,

[0028] The third indication information is carried within the second SI, which is information obtained by updating system information.

[0029] In one possible implementation, the method further includes:

[0030] Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

[0031] In one possible implementation, the target area includes the ocean or a distress coordination center (RCC).

[0032] In one possible implementation,

[0033] The network side determines whether it covers the target area based on ephemeris information.

[0034] Secondly, embodiments of this application provide an access method, which is applied to a terminal device, and the method includes:

[0035] The system receives a first indication information sent by the network side, which is used to indicate the target random access preamble sequence corresponding to the priority access request.

[0036] In one possible implementation, the target random access preamble sequence includes at least one of the following:

[0037] In a contention-based random access preamble, the preamble sequence indicated for priority access requests;

[0038] Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used.

[0039] In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests;

[0040] A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests;

[0041] An additional preamble is indicated, which is used to prioritize access requests;

[0042] An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

[0043] In one possible implementation, the priority access request is a maritime communication priority access request.

[0044] In one possible implementation, the first indication information is carried within the system information SI.

[0045] In one possible implementation, the method further includes:

[0046] The system receives a second indication information sent by the network side. The second indication information is an indication information obtained after updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

[0047] In one possible implementation, the second indication information sent by the network side is received in at least one of the following situations:

[0048] After the network side receives the priority access request sent by the first terminal, or when the time interval between the time when the network side previously received the priority access request and the current time is greater than a preset time interval;

[0049] Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the priority access request previously received by the network side was a priority access request sent by any terminal in the cell where the terminal device is located.

[0050] In one possible implementation, the second indication information is carried within the first SI, which is information obtained by updating system information.

[0051] In one possible implementation, the method further includes:

[0052] The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

[0053] In one possible implementation, receiving the first indication information sent by the network side includes:

[0054] If the coverage area of ​​the network side includes the target area, the first indication information sent by the network side is received.

[0055] In one possible implementation, the method further includes:

[0056] If it is determined that the coverage area of ​​the network side does not include the target area, a third indication information sent by the network side is received, the third indication information being used to indicate that the target random access preamble sequence does not exist.

[0057] In one possible implementation,

[0058] The third indication information is carried within the second SI, which is information obtained by updating system information.

[0059] In one possible implementation, the method further includes:

[0060] The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

[0061] In one possible implementation, the target area includes the ocean or a distress coordination center (RCC).

[0062] Thirdly, embodiments of this application provide an access device applied to the network side, the device including a transmitting module, wherein...

[0063] The sending module is used to send first indication information to the terminal device, wherein the first indication information is used to indicate the target random access preamble sequence corresponding to the priority access request.

[0064] In one possible implementation, the target random access preamble sequence includes at least one of the following:

[0065] In a contention-based random access preamble, the preamble sequence indicated for priority access requests;

[0066] Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used.

[0067] In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests;

[0068] A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests;

[0069] An additional preamble is indicated, which is used to prioritize access requests;

[0070] An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

[0071] In one possible implementation, the priority access request is a maritime communication priority access request.

[0072] In one possible implementation, the first indication information is carried within the system information SI.

[0073] In one possible implementation, the sending module is further configured to,

[0074] Send a second indication information to the terminal device. The second indication information is an indication information obtained by updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

[0075] In one possible implementation, a second instruction message is sent to the terminal device in at least one of the following situations:

[0076] After receiving the priority access request sent by the first terminal, or when the time interval between the time when the priority access request was received and the current time is greater than the preset time interval;

[0077] Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the previously received priority access request was sent by any terminal in the cell where the terminal device is located.

[0078] In one possible implementation, the second indication information is carried within the first SI, which is information obtained by updating system information.

[0079] In one possible implementation, the sending module is further configured to,

[0080] Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

[0081] In one possible implementation, the sending module is specifically used for,

[0082] If it is determined that the coverage area of ​​the network side includes the target area, the first indication information is sent to the terminal device.

[0083] In one possible implementation, the sending module is further configured to,

[0084] If it is determined that the coverage area of ​​the network side does not include the target area, a third indication information is sent to the terminal device, the third indication information being used to indicate that the target random access preamble sequence does not exist.

[0085] In one possible implementation,

[0086] The third indication information is carried within the second SI, which is information obtained by updating system information.

[0087] In one possible implementation, the sending module is further configured to,

[0088] Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

[0089] In one possible implementation, the target area includes the ocean or a distress coordination center (RCC).

[0090] In one possible implementation,

[0091] The network side determines whether it covers the target area based on ephemeris information.

[0092] Fourthly, embodiments of this application provide an access device, which is applied to a terminal device. The device includes a receiving module, wherein...

[0093] The receiving module is used to receive first indication information sent by the network side, wherein the first indication information is used to indicate the target random access preamble sequence corresponding to the priority access request.

[0094] In one possible implementation, the target random access preamble sequence includes at least one of the following:

[0095] In a contention-based random access preamble, the preamble sequence indicated for priority access requests;

[0096] Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used.

[0097] In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests;

[0098] A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests;

[0099] An additional preamble is indicated, which is used to prioritize access requests;

[0100] An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

[0101] In one possible implementation, the priority access request is a maritime communication priority access request.

[0102] In one possible implementation, the first indication information is carried within the system information SI.

[0103] In one possible implementation, the receiving module is further configured to,

[0104] The system receives a second indication information sent by the network side. The second indication information is an indication information obtained after updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

[0105] In one possible implementation, the second indication information sent by the network side is received in at least one of the following situations:

[0106] After the network side receives the priority access request sent by the first terminal, or when the time interval between the time when the network side previously received the priority access request and the current time is greater than a preset time interval;

[0107] Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the priority access request previously received by the network side was a priority access request sent by any terminal in the cell where the terminal device is located.

[0108] In one possible implementation, the second indication information is carried within the first SI, which is information obtained by updating system information.

[0109] In one possible implementation, the receiving module is further configured to,

[0110] The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

[0111] In one possible implementation, the receiving module is specifically used for,

[0112] If the coverage area of ​​the network side includes the target area, the terminal device receives a first indication message sent by the network side, indicating that the terminal device is located within the target area.

[0113] In one possible implementation, the receiving module is further configured to,

[0114] If it is determined that the coverage area of ​​the network side does not include the target area, a third indication information sent by the network side is received, the third indication information being used to indicate that the target random access preamble sequence does not exist.

[0115] In one possible implementation,

[0116] The third indication information is carried within the second SI, which is information obtained by updating system information.

[0117] In one possible implementation, the receiving module is further configured to,

[0118] The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

[0119] In one possible implementation, the target area includes the ocean or a distress coordination center (RCC).

[0120] Fifthly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0121] The memory stores computer-executed instructions;

[0122] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0123] Sixthly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0124] The memory stores computer-executed instructions;

[0125] The processor executes computer execution instructions stored in the memory, causing the processor to perform the second aspect and / or various possible implementations of the second aspect as described above.

[0126] In a seventh aspect, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0127] Eighthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the second aspect and / or various possible implementations of the second aspect as described above.

[0128] Ninthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0129] In a tenth aspect, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the second aspect and / or various possible implementations of the second aspect as described above.

[0130] The access method, apparatus, electronic device, storage medium, and program product provided in this application embodiment allow the network side to send first indication information to the terminal device. This first indication information can be used to indicate the target random access preamble sequence corresponding to the priority access request. In the above method, the target random access preamble sequence can be a preamble sequence specifically for priority access requests. Thus, in priority communication scenarios, the terminal device can use the target random access preamble sequence to access the network side, reducing the probability of access failure and improving the success rate of terminal device access in priority communication scenarios. Attached Figure Description

[0131] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0132] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of this application;

[0133] Figure 2 A flowchart illustrating an access method provided in an embodiment of this application;

[0134] Figure 3 A flowchart illustrating another access method provided in an embodiment of this application;

[0135] Figure 4 A flowchart illustrating another access method provided in an embodiment of this application;

[0136] Figure 5 A flowchart illustrating another access method provided in an embodiment of this application;

[0137] Figure 6 A flowchart illustrating another access method provided in an embodiment of this application;

[0138] Figure 7 This is a schematic diagram of the structure of an access device provided in an embodiment of this application;

[0139] Figure 8 This is a schematic diagram of another access device provided in an embodiment of this application;

[0140] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0141] These accompanying drawings and textual descriptions are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0142] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0143] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0144] To facilitate understanding, the technical terms involved in the embodiments of this application will be explained first.

[0145] (1) Network side: refers to network-side equipment that can communicate with terminal devices. Network equipment can also be called space base station, satellite-borne base station, satellite, satellite communication node, satellite network terminal equipment, satellite communication module, or base station, etc. This network-side equipment can also be called access network equipment or wireless access network equipment. Network-side equipment can be a base station (BTS) in a satellite-borne Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system, a base station (NodeB, NB) in a satellite-borne Wideband Code Division Multiple Access (WCDMA) system, an evolved base station (eNB or eNodeB) in a satellite-borne LTE system, a base station (gNB) in a satellite-borne 5G network, a base station in a future network (e.g., 6G network) after 5G, a base station in a future evolved Public Land Mobile Network (PLMN) network, a transmission reception point (TRP) in a satellite-borne transmission reception point (TRP), a radio controller in a cloud radio access network (CRAN) scenario, or a city base station, micro base station, pico base station, or femtobase station, etc., carried by satellite.

[0146] (2) Terminal Device: This refers to a device that has wireless transceiver capabilities and can cooperate with network-side equipment to provide communication services to users. Terminal devices can also be called terminals, user equipment (UE), user terminals, mobile terminals (MT), or user agents, etc. For example, terminal devices can be mobile phones, tablets, laptops, wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, vehicle-mounted devices, or shipboard devices, etc.

[0147] (3) Preamble sequence: refers to the signal sequence sent by the terminal device to the network device during random access. New Radio (NR) supports two different lengths of preamble sequences. The two different lengths of preamble sequences are: a long sequence with a length of 839 and a subcarrier spacing of 1.25kHz or 5kHz, and a short sequence with a length of 139 and a subcarrier spacing of 15kHz, 30kHz, 60kHz or 120kHz. The long sequence is only applicable to frequency bands less than 6GHz (i.e., band range 1), while the short sequence can be applied to frequency bands less than or greater than 6GHz (i.e., band range 1 or band range 2).

[0148] The preamble sequence is generated by cyclically shifting the root Zadoff-Chuse sequence. Each Physical Random Access Channel (PRACH) time-frequency machine defines 64 preamble sequences, which can be numbered in ascending order of cyclic shifts of the logical root sequence.

[0149] (4) Contention-based Random Access: This is a random access method in mobile communication systems. Contention-based random access refers to a random access process in which multiple user equipments may simultaneously use the same random access resources, resulting in contention.

[0150] (5) Contention-free Random Access: This is a random access method in mobile communication systems. Contention-free random access refers to the network allocating dedicated random access resources to specific user equipment, without any contention during the random access process. In contention-free random access, network devices can specify a dedicated preamble sequence for the user equipment.

[0151] (6) Maritime communication: also known as ocean communication, refers to communication conducted in the marine environment. Maritime communication can include the following types of communication:

[0152] a. Distress Alert / Call

[0153] Report the distress incident to other nearby vessels or the Rescue Coordination Center (RCC) that can provide or coordinate assistance. The distress report should identify the vessel and its location in distress; if time permits, it should also specify the nature of the distress and any other information that could aid in the rescue operation. Distress incidents are typically categorized as collisions, sinkings, or other events that pose a safety threat.

[0154] b. Shore-to-ship distress relay alarm / call

[0155] When the RCC receives a distress alert, it forwards the alert to the Search and Rescue (SAR) unit and other vessels near the distress location.

[0156] c. Ship-to-shore, shore-to-ship, and ship-to-ship search and rescue coordination communications

[0157] Search and rescue coordination communications (CRCs) refer to the communication links between the RCCs (Rescue Carriers) involved in the search and rescue distress alert, other ships, aircraft, and on-site search and rescue command personnel. CRCs typically utilize radiotelephones and wireless telephony for two-way communication of distress and safety information to transmit search and rescue coordination communications messages.

[0158] d. Distress information transmission via Automatic Identification System (AIS).

[0159] e. Activation and signal transmission of the Emergency Position-Indicating Radio Beacon (EPIRB).

[0160] f. Search and rescue location signal.

[0161] g. Emergency calls and emergency signals. For example, acute medical emergencies of crew members, malfunctions of critical equipment, etc.

[0162] h. Requests for medical advice or coordination that are urgent in nature.

[0163] i. The dissemination of emergency navigation or navigation information. For example, significant changes in waterways or equipment malfunctions.

[0164] j. Ship-to-shore transmission of maritime safety information

[0165] Ships can promptly transmit safety information, such as weather warnings, to shore when they encounter them during navigation.

[0166] k. Shore-to-ship broadcast of maritime safety information

[0167] Ships need to receive the latest navigation warnings, weather warnings, weather forecasts and other emergency maritime safety information (MSI) in a timely manner to ensure safe navigation.

[0168] m. General communication between ships, shores, and ships.

[0169] Communication used for daily production, scheduling, and command on ships and shore.

[0170] n. Communication between the bridge and the bridge

[0171] Communication between the bridges is the transmission of information regarding navigational safety and avoidance, which is crucial in navigating narrow waterways and busy shipping lanes.

[0172] Maritime communications, prioritized from highest to lowest, are: distress communications, emergency communications, safety communications, and routine communications. Distress communications refer to any communications that immediately endanger life, including but not limited to the aforementioned Af type communications. Emergency communications refer to any communications that require immediate assistance but do not pose a direct threat to life, including but not limited to the aforementioned Gi type communications.

[0173] (7) Cell: refers to a cell identified by a cell ID. Typically, a cell covers a certain geographical area. A base station can usually include one or more cells, and the cell side of a base station can also be referred to as the network side.

[0174] To facilitate understanding, the application scenarios involved in the embodiments of this application are described below.

[0175] Figure 1 This is a schematic diagram illustrating an application scenario provided by an embodiment of this application. Please refer to [link / reference]. Figure 1 Both terminal device A and terminal device B are within the coverage area of ​​the network-side equipment.

[0176] It should be understood that the number of terminal devices within the coverage area of ​​the network-side equipment can be one or more. Figure 1 This is merely an illustrative example and does not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0177] Both terminal device A and terminal device B can initiate random access requests to the network-side device to request access. These random access requests can be in either a normal communication scenario or a priority communication scenario. However, during the random access process, the network-side device cannot determine the purpose of the random access request. That is, the network-side device cannot determine whether the random access request is in a normal communication scenario or a priority communication scenario. If there is contention in the random access preamble sequence used in the random access request, it may cause the terminal device to fail to access, resulting in a lower success rate for terminal devices in priority communication scenarios.

[0178] In view of this, embodiments of this application provide an access method in which a target random access preamble sequence can be configured for a random access request (i.e., a priority access request) in a priority communication scenario, so that the terminal device can use the target random access preamble sequence to access the network-side device in a priority communication scenario, thereby improving the success rate of the terminal device in a priority communication scenario.

[0179] The technical solutions provided in this application are applicable to 5G NR systems, as well as other communication systems whose preamble generation principles are the same or similar to those of 5G NR systems.

[0180] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0181] Figure 2 This is a flowchart illustrating an access method provided in an embodiment of this application. Figure 2 As shown, the method may include:

[0182] S201. The network-side terminal device sends a first indication information, which is used to indicate the target random access preamble sequence corresponding to the priority access request.

[0183] Correspondingly, the terminal device receives the first instruction information sent by the network side.

[0184] The network side can be a network-side device.

[0185] The terminal device can be any terminal device within the network coverage area.

[0186] Priority access requests can be random access requests in priority communication scenarios.

[0187] In some embodiments, the priority communication scenario can be a maritime priority communication scenario, and the priority access request can be a maritime communication priority access request.

[0188] In some embodiments, the maritime priority communication scenario can be a distress communication scenario, that is, the priority communication scenario can be a distress communication scenario.

[0189] In some embodiments, the maritime priority communication scenario can be an emergency communication scenario, that is, the priority communication scenario can be an emergency communication scenario.

[0190] In some embodiments, the maritime priority communication scenario can be a distress communication scenario and an emergency communication scenario, that is, the priority communication scenario can be a distress communication scenario and an emergency communication scenario.

[0191] It should be noted that explanations of distress communications and emergency communications can be found in the technical terminology section and the explanation of maritime communications, and will not be repeated here.

[0192] In some embodiments, the priority communication scenario can be a land-priority communication scenario, and the priority access request can be a land communication priority access request. For example, the land-priority communication scenario can be public safety communication or disaster recovery communication.

[0193] In some embodiments, the first indication information may be a system information block (SIB).

[0194] In some embodiments, the first indication information may be carried within the system information (SI).

[0195] In some embodiments, the SI may include multiple fields. These multiple fields may include first indication information, total number of RA-preambles, PRACH configuration index, PRACH root sequence index, zero correlation zone configuration, and SSB per RACH-Occasion and CB-preambles per SSB, etc.

[0196] It should be noted that detailed descriptions of the total number of random access preamble sequences, PRACH configuration index, PRACH root sequence index, zero-correlation region parameters, and SSB and preamble sequence for each RACH opportunity can be found in relevant technical documents, and will not be elaborated here.

[0197] In some embodiments, the target random access preamble includes at least one of the following: a preamble indicated for a priority access request in a contention-based random access preamble; a preamble indicated for a priority access request in a contention-based random access preamble available on each Synchronization Signal Block (SSB); a preamble indicated for a priority access request in a non-contention-based random access preamble; a non-contention-based preamble indicated for use on each SSB, the non-contention-based preamble being used for a priority access request; an additional preamble indicated for a priority access request; or a preamble indicated for an additional preamble on each SSB, the additional preamble being used for a priority access request.

[0198] In some embodiments, the first indication information may also be referred to as the distress preamble index.

[0199] In some embodiments, the first indication information may indicate the number of the target random access preamble sequence, or it may indicate the number of target random access preamble sequences among multiple random access preamble sequences. The multiple random access preamble sequences may be contention-based random access preamble sequences, non-contention-based random access preamble sequences, or contention-based random access preamble sequences available on each SSB, etc.

[0200] In some embodiments, the first indication information may be one or more bits. For example, if the first indication information is two bits, it may include the following four cases: "00", "01", "10", and "11".

[0201] In some embodiments, if the first indication information indicates the number of the target random access preamble sequence, different bits in the first indication information can indicate different random access preamble sequence numbers. For example, assuming the first indication information includes the following four cases: "00", "01", "10", and "11", and each case can indicate the number of one random access preamble sequence, then the first indication information can indicate four different random access preamble sequence numbers. It should be noted that in various cases, the number of the random access preamble sequence indicated by the first indication information can be set according to actual needs, and is not limited here. For example, the number of the random access preamble sequence indicated by "00" can be preset to 0, or the number of the random access preamble sequence indicated by "00" can be preset to 1.

[0202] In some embodiments, if the first indication information indicates the number of target random access preamble sequences in a plurality of random access preamble sequences, different numbers can be indicated by different bits in the first indication information. For example, assuming the first indication information includes the following four cases: "00", "01", "10", and "11", and each case can indicate one number, then the first indication information can indicate four different numbers. It should be noted that the specific number indicated by the first indication information in each case can be set according to actual needs and is not limited here. For example, the number indicated by "00" can be preset to 1, or the number indicated by "00" can be preset to 5.

[0203] Furthermore, if the first indication information indicates the number of target random access preamble sequences among multiple random access preamble sequences, the position of the target random access preamble sequence among the multiple random access preamble sequences can be pre-configured. For example, the target random access preamble sequence can be one of the first few random access preamble sequences among multiple random access preamble sequences, or the target random access preamble sequence can be one of the last few random access preamble sequences among multiple random access preamble sequences, etc.

[0204] In some embodiments, the target random access preamble can be a portion of a competition-based random access preamble.

[0205] For example, suppose the first indication information indicates the number of the target random access preamble sequence. If the first indication information is "00", and the number of the random access preamble sequence corresponding to "00" is 0, then the target random access preamble sequence can be the random access preamble sequence with the number 0 in the contention-based random access preamble sequence. Suppose the first indication information indicates the number of target random access preamble sequences among multiple random access preamble sequences. If the target random access preamble sequence can be one of the first few random access preamble sequences among multiple random access preamble sequences, and the first indication information is "11", and "11" indicates a quantity of 4, then the target random access preamble sequence can be one of the first 4 random access preamble sequences in the contention-based random access preamble sequence.

[0206] In some embodiments, the target random access preamble can be a portion of a non-contested random access preamble.

[0207] For example, a cell has a total of 64 random access preamble sequences, including 48 contention-based random access preamble sequences and 16 contention-free random access preamble sequences. The first indication information can indicate that one or more of the 16 contention-free random access preamble sequences are used for a priority access request.

[0208] For example, suppose the first indication information indicates the number of the target random access preamble sequence. If the first indication information is "01", and the number of the random access preamble sequence corresponding to "01" is 1, then the target random access preamble sequence can be the random access preamble sequence with the number 1 among the non-contention-based random access preamble sequences. Alternatively, suppose the first indication information indicates the number of target random access preamble sequences among multiple random access preamble sequences. If the target random access preamble sequence can be one of the first few random access preamble sequences among the multiple random access preamble sequences, and the first indication information is "11", and "11" indicates a quantity of 5, then the target random access preamble sequence can be one of the first 5 random access preamble sequences among the non-contention-based random access preamble sequences.

[0209] In some embodiments, the target random access preamble can be a portion of the contention-based random access preambles available on each SSB.

[0210] For example, suppose the first indication information indicates the number of the target random access preamble sequence. If the first indication information is "10", and the number of the random access preamble sequence corresponding to "10" is 2, then the target random access preamble sequence can be the random access preamble sequence numbered 2 among the contention-based random access preamble sequences available on each SSB. Alternatively, suppose the first indication information indicates the number of target random access preamble sequences among multiple random access preamble sequences. If the target random access preamble sequence can be one of the first few random access preamble sequences among multiple random access preamble sequences, and the first indication information is "01", and the number indicated by "01" is 2, then the first two random access preamble sequences among the contention-based random access preamble sequences available on each SSB are the target random access preamble sequences.

[0211] In some embodiments, the target random access preamble can be a non-contention-based random access preamble indicated as available in each SSB, which is used for priority access requests.

[0212] For example, a cell has a total of 64 random access preamble sequences, including 48 contention-based random access preamble sequences and 16 contention-free random access preamble sequences. The first indication information can indicate that one or more of the 16 contention-free random access preamble sequences are used for a priority access request, and that the one or more random access preamble sequences are indicated to be used on a specific SSB.

[0213] For example, suppose the first indication information indicates the number of target random access preamble sequences among multiple random access preamble sequences. The target random access preamble sequences can be the first few random access preamble sequences among the multiple random access preamble sequences. The first indication information is "01", and the number of "01" indicates is 2. Then, the number of contention-free random access preamble sequences that can be used on each SSB is 2. These contention-free random access preamble sequences are used for priority access requests. If the cell has 4 SSBs, then a total of 8 contention-free random access preamble sequences are used for priority access requests.

[0214] In some embodiments, the target random access preamble sequence can be an additional preamble sequence used for priority access requests. For example, if a cell already has 64 random access preamble sequences, one or more additional random access preamble sequences can be added through cyclic shifting. The first indication information can indicate the number of additional preamble sequences. For example, assuming the first indication information includes the following four cases: "00", "01", "10", and "11", and each case can indicate a quantity, then the first indication information can indicate four different quantities. It should be noted that the quantity indicated by the first indication information in various cases can be set according to actual needs and is not limited here. For example, the quantity indicated by "00" can be preset to 1, or the quantity indicated by "00" can be preset to 5.

[0215] For example, assuming the first indication information is “00” and the number of “00” indications is 5, the target random access preamble sequence can be an additional 5 preamble sequences.

[0216] In some embodiments, the target random access preamble can be an additional preamble for each SSB, which is used for priority access requests. First indication information can indicate the number of additional preambles added for each SSB.

[0217] For example, assuming the first indication information is "01" and the number of "01" indications is 2, then the number of additional preamble sequences added for each SSB is 2. Assuming the number of SSBs is 4, then the total number of additional target random access preamble sequences is 8.

[0218] In some embodiments, a leader sequence can be added by cyclic shifting.

[0219] In some embodiments, the additional preamble sequence may be an additional preamble sequence based on the total number of existing random access preamble sequences in the cell.

[0220] In the access method provided in this embodiment, the network side can send first indication information to the terminal device. This first indication information can be used to indicate the target random access preamble sequence corresponding to the priority access request. In the above method, the target random access preamble sequence can be a preamble sequence specifically for priority access requests. Thus, in priority communication scenarios, the terminal device can use the target random access preamble sequence to access the network side, reducing the probability of access failure and improving the success rate of terminal device access in priority communication scenarios.

[0221] Based on the above embodiments, the network side can also update the target random access preamble sequence. Below, in conjunction with... Figure 3 The access method provided in the embodiments of this application will be further described.

[0222] Figure 3 This is a flowchart illustrating another access method provided in an embodiment of this application. Figure 3 As shown, the method may include:

[0223] S301. The network side sends a second indication information to the terminal device. The second indication information is used to indicate the updated target random access preamble sequence.

[0224] The second instruction information is the instruction information obtained after updating the first instruction information.

[0225] In some embodiments, the purpose of updating the target random access preamble is to increase the number of target random access preambles. The number of target random access preambles after the update is greater than the number of target random access preambles before the update.

[0226] In some embodiments, the purpose of updating the target random access preamble is to reduce the number of target random access preambles. The number of target random access preambles after the update is less than the number of target random access preambles before the update.

[0227] In some embodiments, the second indication information is carried within the first SI. The first SI is information obtained by updating the system information; that is, the first SI can be the updated system information.

[0228] In some embodiments, the network side may also send an indication that the system information has been updated to the terminal device. This indication may be included in the paging control message. For example, the indication that the system information has been updated may be a single bit in the paging control message.

[0229] In some embodiments, the network side may send a paging control message to the terminal device within the current system information modification cycle, and may send a first SI to the terminal device within the next system information modification cycle.

[0230] In some embodiments, the network side sending second indication information to the terminal device may include the following two cases:

[0231] Case 1: After receiving the priority access request sent by the first terminal, send the second instruction information to the terminal device.

[0232] The first terminal can be any terminal within the cell where the terminal device is located.

[0233] Specifically, after any terminal in the cell where the terminal device is located sends a priority access request to the network side, the network side can send a second indication message to the terminal device.

[0234] In this scenario, if any terminal within the cell where the terminal device is located sends a priority access request to the network, it indicates that there is a high probability that each terminal within the cell will send a priority access request to the network. The network can increase the number of target random access preamble sequences, further improving the success rate of terminal devices in priority communication scenarios.

[0235] In this case, the number of target random access preamble sequences after the update is greater than the number of target random access preamble sequences before the update.

[0236] In this scenario, after receiving the priority access request from the first terminal, the network side can send a paging control message to the terminal device. The paging control message may contain an indication that the system information has been updated. Based on this indication, the terminal device can receive the first SI sent by the network side and obtain the second indication information from the first SI.

[0237] In this case, the network side can promptly increase the number of target random access preamble sequences to improve the success rate of terminal devices in priority communication scenarios when the demand for target random access preamble sequences is large.

[0238] Case 2: If the time interval between the previous time of receiving the priority access request and the current time is greater than the preset time interval, a second indication message is sent to the terminal device.

[0239] The previously received priority access request was sent by any terminal within the cell where the terminal device is located.

[0240] Specifically, if the network does not receive a priority access request from any terminal in the cell where the terminal device is located within a preset time period, the network can send a second indication message to the terminal device.

[0241] In this case, if the network does not receive a priority access request from any terminal in the cell where the terminal device is located within a preset time period, it indicates that the probability of each terminal in the cell sending a priority access request to the network is low. The network can reduce the number of target random access preamble sequences to save random access preamble sequence resources.

[0242] In this case, the number of target random access preamble sequences after the update is less than the number of target random access preamble sequences before the update.

[0243] In this scenario, if the network does not receive a priority access request from any terminal within the cell where the terminal device is located within a preset time period, it may send a paging control message to the terminal device. The paging control message may contain an indication that the system information has been updated. Based on this indication, the terminal device can receive the first SI sent by the network and obtain the second indication information from the first SI.

[0244] In this case, the network side can promptly reduce the number of target random access preamble sequences to conserve random access preamble sequence resources when the demand for target random access preamble sequences is small.

[0245] In the access method provided in this embodiment, the network side can send second indication information to the terminal device, so that the terminal device can determine the updated target random access preamble sequence based on the second indication information. Through the above method, the purpose of enabling the terminal device to determine the updated target random access preamble sequence can be achieved.

[0246] Based on any of the above embodiments, the following is combined with Figure 4 To explain situation 1 above.

[0247] Figure 4 This is a flowchart illustrating another access method provided in an embodiment of this application. Figure 4 As shown, the method may include:

[0248] S401, The first terminal sends a priority access request to the network side.

[0249] S402. The network side sends an indication to the terminal device that the system information has been updated. The indication that the system information has been updated is included in the paging control message.

[0250] Specifically, the network side can send paging control messages to the terminal device, and the paging control messages can include an indication that the system information has been updated.

[0251] It should be noted that the network side can send paging control messages to each terminal within the cell where the terminal device is located. Figure 4 The example given is merely a network-side instruction to send paging control messages to a terminal device and does not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0252] S403. The network side sends a first SI to the terminal device. The first SI is information obtained by updating the system information, and the first SI carries second indication information.

[0253] It should be noted that the explanation of the first SI and the second indication information can be found in [reference needed]. Figure 3 Examples are not described here.

[0254] In the access method provided in this embodiment, when the probability of each terminal in the cell where the terminal device is located sending a priority access request to the network side is relatively high, the network side can increase the number of target random access preamble sequences, thereby improving the success rate of terminal devices in priority communication scenarios.

[0255] Based on any of the above embodiments, to improve the successful access rate of terminal devices within the target area and in priority communication scenarios, the network side may only send the first indication information to terminal devices within the target area. Below, in conjunction with... Figure 5 The access method provided in the embodiments of this application will be described.

[0256] Figure 5 This is a flowchart illustrating another access method provided in an embodiment of this application. Figure 5 As shown, the method may include:

[0257] S501. If it is determined that the coverage area on the network side includes the target area, send the first instruction information to the terminal device.

[0258] The terminal device can be any terminal within the cell where the target area is located.

[0259] In some embodiments, the target area includes the ocean or the RCC, etc.

[0260] In some embodiments, the network side determines whether it covers the target area based on ephemeris information.

[0261] In some embodiments, the network side can obtain ephemeris information from the ground control station and determine whether it covers the target area based on the ephemeris information.

[0262] Specifically, the ground control station can periodically calculate and send ephemeris information to the network side. Correspondingly, the network side can periodically receive the latest ephemeris information.

[0263] In some embodiments, the network side can obtain ephemeris information from its own autonomous navigation system and determine whether it covers the target area based on the ephemeris information. For example, the autonomous navigation system can be a Global Navigation Satellite System (GNSS) receiver, etc.

[0264] Specifically, the network side can be configured with an autonomous navigation system. This system can receive position signals from a global navigation satellite system (GNSS). These position signals can include the network's position information and orbital parameters. Thus, the autonomous navigation system can determine the network's ephemeris information based on the position signals. The network side can obtain ephemeris information from the autonomous navigation system in real time. For example, the GNSS could be the Global Positioning System (GPS), GLONASS, or Galileo.

[0265] The access method provided in this embodiment allows the network side to send a first indication message to the terminal device when it determines that its coverage area includes the target area. In this method, areas with a high frequency of priority communication scenarios or areas with a high probability of using the target random access preamble sequence can be identified as target areas to improve the success rate of terminal device access in priority communication scenarios.

[0266] exist Figure 5 Based on the previous implementation, if the location of the network side changes and the target area is no longer included in the coverage area, the network side can stop indicating the target random access preamble sequence to terminal devices within the coverage area. Below, in conjunction with... Figure 6 The access method provided in the embodiments of this application will be further described.

[0267] Figure 6 This is a flowchart illustrating another access method provided in an embodiment of this application. Figure 6 As shown, the method may include:

[0268] S601. If it is determined that the coverage area on the network side includes the target area, send the first instruction information to the terminal device.

[0269] It should be noted that the specific implementation of S601 can be found in S501, and will not be repeated here.

[0270] S602. If it is determined that the coverage area on the network side does not include the target area, a third indication information is sent to the terminal device. The third indication information is used to indicate that there is no target random access preamble sequence.

[0271] In some embodiments, the third indication information is carried within the second SI. The second SI is information obtained by updating the system information; that is, the second SI can be the updated system information.

[0272] In some embodiments, the network side may also send an indication that the system information has been updated to the terminal device, and this indication is included in the paging control message. That is, the network side may send a paging control message to the terminal device, and the paging control message may contain an indication that the system information has been updated.

[0273] In some embodiments, the network side may send a paging control message to the terminal device within the current system information modification cycle, and may send a first SI to the terminal device within the next system information modification cycle.

[0274] Specifically, if the network coverage area does not include the target area, the network can send a paging control message to the terminal device. This paging control message indicates that system information has been updated. The terminal device can receive a second SI (System Information Set) based on the paging control message and can obtain third indication information from the second SI.

[0275] The access method provided in this embodiment allows the network side to send a first indication message to the terminal device if it determines that its coverage area includes the target area. If the network side determines that its coverage area does not include the target area, it can send a third indication message to the terminal device indicating that no target random access preamble sequence exists. In this method, the network side can send the first indication message only to terminal devices within the cell where the target area is located. This method can improve the utilization rate of the target random access preamble sequence.

[0276] Figure 7 This is a schematic diagram of an access device provided in an embodiment of this application. The access device 10 is applied to the network side, and includes a transmitting module 11, wherein...

[0277] The sending module 11 is used to send first indication information to the terminal device, the first indication information being used to indicate the target random access preamble sequence corresponding to the priority access request.

[0278] The access device provided in this embodiment can execute the method executed by the network side in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0279] In one possible implementation, the target random access preamble sequence includes at least one of the following:

[0280] In a contention-based random access preamble, the preamble sequence indicated for priority access requests;

[0281] Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used.

[0282] In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests;

[0283] A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests;

[0284] An additional preamble is indicated, which is used to prioritize access requests;

[0285] An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

[0286] In one possible implementation, the priority access request is a maritime communication priority access request.

[0287] In one possible implementation, the first indication information is carried within the system information SI.

[0288] In one possible implementation, the sending module 11 is further configured to,

[0289] Send a second indication information to the terminal device. The second indication information is an indication information obtained by updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

[0290] In one possible implementation, a second instruction message is sent to the terminal device under at least one of the following conditions:

[0291] After receiving the priority access request sent by the first terminal, or when the time interval between the time when the priority access request was received and the current time is greater than the preset time interval;

[0292] Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the previously received priority access request was sent by any terminal in the cell where the terminal device is located.

[0293] In one possible implementation, the second indication information is carried within the first SI, which is information obtained by updating system information.

[0294] In one possible implementation, the sending module 11 is further configured to,

[0295] Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

[0296] In one possible implementation, the sending module 11 is specifically used for,

[0297] If it is determined that the coverage area of ​​the network side includes the target area, the first indication information is sent to the terminal device.

[0298] In one possible implementation, the sending module 11 is further configured to,

[0299] If it is determined that the coverage area of ​​the network side does not include the target area, a third indication information is sent to the terminal device, the third indication information being used to indicate that the target random access preamble sequence does not exist.

[0300] In one possible implementation,

[0301] The third indication information is carried within the second SI, which is information obtained by updating system information.

[0302] In one possible implementation, the sending module 11 is further configured to,

[0303] Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

[0304] In one possible implementation, the target area includes the ocean or a distress coordination center (RCC).

[0305] In one possible implementation,

[0306] The network side determines whether it covers the target area based on ephemeris information.

[0307] The access device provided in this embodiment can execute the method executed by the network side in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0308] Figure 8 This is a schematic diagram of another access device provided in an embodiment of this application. The access device 20 is applied to a terminal device, and the access device 20 includes a receiving module 21, wherein...

[0309] The receiving module 21 is used to receive first indication information sent by the network side, the first indication information being used to indicate the target random access preamble sequence corresponding to the priority access request.

[0310] The access device provided in this embodiment can execute the method executed by the terminal device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0311] In one possible implementation, the target random access preamble sequence includes at least one of the following:

[0312] In a contention-based random access preamble, the preamble sequence indicated for priority access requests;

[0313] Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used.

[0314] In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests;

[0315] A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests;

[0316] An additional preamble is indicated, which is used to prioritize access requests;

[0317] An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

[0318] In one possible implementation, the priority access request is a maritime communication priority access request.

[0319] In one possible implementation, the first indication information is carried within the system information SI.

[0320] In one possible implementation, the receiving module 21 is further configured to,

[0321] The system receives a second indication information sent by the network side. The second indication information is an indication information obtained after updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

[0322] In one possible implementation, the second indication information sent by the network side is received in at least one of the following situations:

[0323] After the network side receives the priority access request sent by the first terminal, or when the time interval between the time when the network side previously received the priority access request and the current time is greater than a preset time interval;

[0324] Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the priority access request previously received by the network side was a priority access request sent by any terminal in the cell where the terminal device is located.

[0325] In one possible implementation, the second indication information is carried within the first SI, which is information obtained by updating system information.

[0326] In one possible implementation, the receiving module 21 is further configured to,

[0327] The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

[0328] In one possible implementation, the receiving module 21 is specifically used for,

[0329] If the coverage area of ​​the network side includes the target area, the first indication information sent by the network side is received.

[0330] In one possible implementation, the receiving module 21 is further configured to,

[0331] If it is determined that the coverage area of ​​the network side does not include the target area, a third indication information sent by the network side is received, the third indication information being used to indicate that the target random access preamble sequence does not exist.

[0332] In one possible implementation,

[0333] The third indication information is carried within the second SI, which is information obtained by updating system information.

[0334] In one possible implementation, the receiving module is further configured to,

[0335] The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

[0336] In one possible implementation, the target area includes the ocean or a distress coordination center (RCC).

[0337] The access device provided in this embodiment can execute the method executed by the terminal device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0338] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 9 As shown, the electronic device 30 may include a processor 31 and a memory 32, wherein the processor 31 and the memory 32 can communicate; for example, the processor 31 and the memory 32 communicate via a communication bus 33, wherein the memory 32 is used to store computer execution instructions, and the processor 31 is used to invoke the computer execution instructions in the memory to execute the method shown in any of the above method embodiments.

[0339] Optionally, the electronic device 30 may also include a communication interface, which may include a transmitter and / or a receiver.

[0340] The electronic device 30 can be a terminal device or a network side as described in any of the above embodiments.

[0341] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0342] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0343] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0344] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the method shown in any of the above-described method embodiments.

[0345] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the method shown in any of the above-described method embodiments.

[0346] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device 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. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0347] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0348] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0349] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0350] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0351] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0352] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0353] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An access method, characterized in that, The method is applied to the network side, and the method includes: Send a first indication message to the terminal device, the first indication message being used to indicate the target random access preamble sequence corresponding to the priority access request.

2. The method according to claim 1, characterized in that, The target random access preamble sequence includes at least one of the following: In a contention-based random access preamble, the preamble sequence indicated for priority access requests; Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used. In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests; A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests; An additional preamble is indicated, which is used to prioritize access requests; An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

3. The method according to claim 1 or 2, characterized in that, The priority access request is a maritime communication priority access request.

4. The method according to any one of claims 1-3, characterized in that, The first indication information is carried in the system information SI.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: Send a second indication information to the terminal device. The second indication information is an indication information obtained by updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

6. The method according to claim 5, characterized in that, The second instruction information is sent to the terminal device under at least one of the following circumstances: After receiving the priority access request sent by the first terminal, or when the time interval between the time when the priority access request was received and the current time is greater than the preset time interval; Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the previously received priority access request was sent by any terminal in the cell where the terminal device is located.

7. The method according to claim 6, characterized in that, The second indication information is carried within the first SI, which is information obtained by updating system information.

8. The method according to claim 7, characterized in that, The method further includes: Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

9. The method according to any one of claims 1-4, characterized in that, Send a first instruction message to the terminal device, including: If it is determined that the coverage area of ​​the network side includes the target area, the first indication information is sent to the terminal device.

10. The method according to claim 9, characterized in that, The method further includes: If it is determined that the coverage area of ​​the network side does not include the target area, a third indication information is sent to the terminal device, the third indication information being used to indicate that the target random access preamble sequence does not exist.

11. The method according to claim 10, characterized in that, The third indication information is carried within the second SI, which is information obtained by updating system information.

12. The method according to claim 11, characterized in that, The method further includes: Send an indication that the system information has been updated to the terminal device, which is included in the paging control message.

13. The method according to any one of claims 9-12, characterized in that, The target area includes the ocean or the emergency call coordination center (RCC).

14. The method according to any one of claims 9-13, characterized in that, The network side determines whether it covers the target area based on ephemeris information.

15. An access method, characterized in that, The method is applied to a terminal device, and the method includes: The system receives a first indication information sent by the network side, which is used to indicate the target random access preamble sequence corresponding to the priority access request.

16. The method according to claim 15, characterized in that, The target random access preamble sequence includes at least one of the following: In a contention-based random access preamble, the preamble sequence indicated for priority access requests; Among the contention-based random access preamble sequences available on each Synchronization Signal Block (SSB), the preamble sequence indicated for priority access requests is used. In a non-contention-based random access preamble, the preamble sequence is indicated for priority access requests; A non-contention-based preamble sequence that is indicated to be available on each SSB for priority access requests; An additional preamble is indicated, which is used to prioritize access requests; An additional preamble sequence is indicated for each SSB, which is used to prioritize access requests.

17. The method according to claim 15 or 16, characterized in that, The priority access request is a maritime communication priority access request.

18. The method according to any one of claims 15-17, characterized in that, The first indication information is carried in the system information SI.

19. The method according to any one of claims 15-18, characterized in that, The method further includes: The system receives a second indication information sent by the network side. The second indication information is an indication information obtained after updating the first indication information. The second indication information is used to indicate the updated target random access preamble sequence.

20. The method according to claim 19, characterized in that, The second indication information sent by the network side is received under at least one of the following conditions: After the network side receives the priority access request sent by the first terminal, or when the time interval between the time when the network side previously received the priority access request and the current time is greater than a preset time interval; Wherein, the first terminal is any terminal in the cell where the terminal device is located, and the priority access request previously received by the network side was a priority access request sent by any terminal in the cell where the terminal device is located.

21. The method according to claim 20, characterized in that, The second indication information is carried within the first SI, which is information obtained by updating system information.

22. The method according to claim 21, characterized in that, The method further includes: The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

23. The method according to any one of claims 15-18, characterized in that, The first indication information sent by the network side includes: If the coverage area of ​​the network side includes the target area, the first indication information sent by the network side is received.

24. The method according to claim 23, characterized in that, The method further includes: If the target area is not covered by the network side, a third indication message is received from the network side, which indicates that the target random access preamble sequence does not exist.

25. The method according to claim 24, characterized in that, The third indication information is carried within the second SI, which is information obtained by updating system information.

26. The method according to claim 25, characterized in that, The method further includes: The system receives an indication that the system information has been updated from the network side, and the indication that the system information has been updated is included in the paging control message.

27. The method according to any one of claims 23-26, characterized in that, The target area includes the ocean or the emergency call coordination center (RCC).

28. An access device, characterized in that, The device is applied on the network side, and the device includes a transmitting module, wherein... The sending module is used to send first indication information to the terminal device, wherein the first indication information is used to indicate the target random access preamble sequence corresponding to the priority access request.

29. An access device, characterized in that, The device is applied to a terminal device, and the device includes a receiving module, wherein... The receiving module is used to receive first indication information sent by the network side, wherein the first indication information is used to indicate the target random access preamble sequence corresponding to the priority access request.

30. An electronic device comprising: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-14, or to implement the method as described in any one of claims 15-27.

31. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-14, or to implement the method as described in any one of claims 15-27.

32. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the method as described in any one of claims 1-14, or the method as described in any one of claims 15-27.

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