Random access method, device and apparatus, and storage medium

Abstract

The present disclosure relates to the technical field of communications. Provided are a random access method, device and apparatus, and a storage medium. The method comprises: acquiring beam hopping information; on the basis of the beam hopping information, determining a physical random access channel (PRACH) configuration index, wherein the PRACH configuration index indicates that there is at least one random access occasion (RO) resource within the dwell time of each beam position; and sending random access configuration information, wherein the random access configuration information comprises the PRACH configuration index. The present disclosure can improve the success rate and efficiency of random access.

Description

Random access method, device, apparatus and storage medium

[0001] The present disclosure claims priority to the Chinese patent application No. 202410830423X, filed on June 25, 2024, and entitled "Random access method, device, apparatus and storage medium", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of communication technology, and in particular, to a random access method, device, apparatus and storage medium. BACKGROUND

[0003] In a terrestrial communication system, a cell usually adopts a fixed coverage mode, and the random access opportunity (RO) resource is mapped in a physical random access channel (PRACH) period, and the RO resource corresponding to each synchronization signal block (SSB) is allocated in sequence, that is, the time domain positions of the RO resources mapped by adjacent SSBs are adjacent. This mapping method is relatively effective in a terrestrial communication system because the coverage range of a cell and the signal propagation path are relatively stable.

[0004] However, in a satellite communication system, especially in a beam hopping scenario, the situation is different. In a satellite communication system, beams are scanned to cover a wider area or improve the service quality of a specific area. In this beam hopping scenario, if the RO mapping method in the terrestrial communication system is still used for configuration, it may occur that the RO resource mapped by the SSB corresponding to the beam position covering the user equipment (UE) is not within the residence time of the beam position, resulting in that the UE cannot initiate random access using the RO resource, which wastes the RO resource and affects the access efficiency. SUMMARY

[0005] Embodiments of the present disclosure at least provide a random access method, device, apparatus and storage medium to solve the efficiency problem caused by the fact that the RO resource is not within the residence time of the beam position in a satellite communication system.

[0006] In a first aspect, embodiments of the present disclosure provide a random access method applied to a network device, the method comprising:

[0007] obtaining beam hopping information;

[0008] determine a physical random access channel (PRACH) configuration index based on the beam hopping information; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource within a dwell time of each beam position;

[0009] transmit random access configuration information; the random access configuration information includes the PRACH configuration index.

[0010] In some embodiments, each RO resource is indexed and ordered according to a time falling within the dwell time of each beam position.

[0011] In some embodiments, the method further includes:

[0012] The random access configuration information further includes a first random access mask index;

[0013] In each RO resource corresponding to the PRACH configuration index, a first dedicated RO resource is determined for a user equipment (UE) satisfying a target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined;

[0014] The mapping relationship exists between each random access mask index and an RO index; the first random access mask index is used for the UE satisfying the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.

[0015] In some embodiments, the method further includes:

[0016] In each RO resource corresponding to the PRACH configuration index, a second dedicated RO resource is determined for a connected state UE, and a second random access mask index corresponding to the second dedicated RO resource is determined; a mapping relationship exists between each random access mask index and an RO index; the second random access mask index is used to determine the second dedicated RO resource from each RO resource;

[0017] The second random access mask index is transmitted to the connected state UE.

[0018] In some embodiments, when the number of RO resources in each beam position is greater than a preset maximum number, the mapping relationship between each random access mask index and an RO index includes:

[0019] The random access mask index is equal to a value obtained by performing a modulo operation on the RO index and adding 1, and a modulus value of the modulo operation is equal to the preset maximum number.

[0020] In some embodiments, when the number of RO resources in each beam position is greater than a preset maximum number, the mapping relationship between each random access mask index and an RO index includes:

[0021] In a case that the random access mask index is equal to 11, the RO index includes 9 to 12; in a case that the random access mask index is equal to 12, the RO index includes 13 to 16.

[0022] In some embodiments, the random access configuration information further includes a frequency domain multiplexing degree and a hopping beam pattern; the hopping beam pattern is used to indicate a dwell time of each beam position.

[0023] The frequency domain multiplexing degree, the hopping beam pattern, and the number of ROs in the time domain indicated by the PRACH configuration index are used to determine the RO resource for initiating random access.

[0024] In some embodiments, the random access configuration information is transmitted, including:

[0025] The random access configuration information is transmitted through a system message.

[0026] In some embodiments, the second random access mask index is transmitted to the connected state UE, including:

[0027] The second random access mask index is transmitted to the connected state UE through dedicated signaling.

[0028] In a second aspect, the embodiments of the present disclosure provide another random access method, applied to a user equipment (UE), the method including:

[0029] Receiving random access configuration information transmitted by a network device; the random access configuration information includes a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource in a dwell time of each beam position;

[0030] Determining a random access opportunity (RO) resource based on the random access configuration information;

[0031] Initiating random access based on the RO resource.

[0032] In some embodiments, each RO resource is indexed and sorted according to time falling within the dwell time of each beam position.

[0033] In some embodiments, the UE has a target characteristic combination.

[0034] The random access configuration information further includes a first random access mask index; the first random access mask index is used to assign to the UE having the target characteristic combination; there is a mapping relationship between each random access mask index and the RO index.

[0035] Determining a random access opportunity (RO) resource based on the random access configuration information, including:

[0036] determine, based on the first random access mask index, the first dedicated RO resource from the RO resources corresponding to the PRACH configuration index;

[0037] initiate the random access based on the RO resource, including:

[0038] initiate the random access based on the first dedicated RO resource.

[0039] In some embodiments, the UE does not have the target characteristic combination;

[0040] The first random access mask index is further included in the random access configuration information; the first random access mask index is used to be assigned to the UE having the target characteristic combination; and there is a mapping relationship between each random access mask index and RO index;

[0041] determine, based on the random access configuration information, the random access opportunity RO resource, including:

[0042] determine, based on the first random access mask index, the target RO resource that can be currently used except the first dedicated RO resource from the RO resources corresponding to the PRACH configuration index;

[0043] initiate the random access based on the RO resource, including:

[0044] initiate the random access based on the target RO resource.

[0045] In some embodiments, the method further includes:

[0046] receive, in the connected state, a second random access mask index sent by the network device; there is a mapping relationship between each random access mask index and RO index;

[0047] determine, based on the random access configuration information, the random access opportunity RO resource, including:

[0048] determine, based on the second random access mask index, a second dedicated RO resource dedicated to the UE from the RO resources corresponding to the PRACH configuration index;

[0049] initiate the random access based on the RO resource, including:

[0050] initiate the random access based on the second dedicated RO resource.

[0051] In some embodiments, in a case where the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0052] The random access mask index is equal to a value obtained by performing a modulo operation on the RO index and adding 1, and a modulus value of the modulo operation is equal to the preset maximum number.

[0053] In some embodiments, when the number of RO resources in each wave position is greater than the preset maximum number, the mapping relationship between each random access mask index and RO index comprises:

[0054] When the random access mask index is equal to 11, the RO index comprises 9 to 12; when the random access mask index is equal to 12, the RO index comprises 13 to 16.

[0055] In some embodiments, the random access configuration information further comprises a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate the dwell time of each wave position.

[0056] Based on the random access configuration information, the random access opportunity RO resource is determined, comprising:

[0057] Based on the number of ROs in the time domain indicated by the PRACH configuration index for each subframe, the frequency domain multiplexing degree, and the beam hopping pattern, the RO resource is determined.

[0058] In some embodiments, the random access configuration information transmitted by the network device is received, comprising:

[0059] The PRACH configuration index transmitted by the network device through the system message is received.

[0060] In some embodiments, the second random access mask index transmitted by the network device in the connected state is received, comprising:

[0061] The second random access mask index transmitted by the network device through the dedicated signaling in the connected state is received.

[0062] In a third aspect, the embodiments of the present disclosure provide a random access device, comprising a memory, a transceiver, and a processor.

[0063] The memory is used to store a computer program; the transceiver is used to transceive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0064] Beam hopping information is obtained;

[0065] Based on the beam hopping information, a physical random access channel PRACH configuration index is determined; the PRACH configuration index indicates that at least one random access opportunity RO resource exists within the dwell time of each wave position;

[0066] Random access configuration information is transmitted; the random access configuration information comprises the PRACH configuration index.

[0067] In some embodiments, each RO resource is indexed and sorted according to the time falling within the dwell time of each wave position.

[0068] In some embodiments, the random access configuration information further comprises a first random access mask index;

[0069] The processor is further configured to perform:

[0070] In each RO resource corresponding to the PRACH configuration index, a first dedicated RO resource is determined for a user equipment (UE) satisfying the target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined.

[0071] The mapping relationship between each random access mask index and RO index exists; the first random access mask index is used for the UE satisfying the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.

[0072] In some embodiments, the processor is further configured to perform:

[0073] In each RO resource corresponding to the PRACH configuration index, a second dedicated RO resource is determined for a connected state user equipment (UE), and a second random access mask index corresponding to the second dedicated RO resource is determined; the mapping relationship between each random access mask index and RO index exists; the second random access mask index is used to determine the second dedicated RO resource from each RO resource;

[0074] The second random access mask index is sent to the connected state UE.

[0075] In some embodiments, when the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index comprises:

[0076] The random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

[0077] In some embodiments, when the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index comprises:

[0078] When the random access mask index is equal to 11, the RO index comprises 9 to 12; when the random access mask index is equal to 12, the RO index comprises 13 to 16.

[0079] In some embodiments, the random access configuration information further comprises a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate the residence time of each wave position;

[0080] The frequency domain multiplexing degree, the beam hopping pattern, and the number of ROs in the time domain indicated by the PRACH configuration index for each subframe are used to determine the RO resource for initiating random access.

[0081] In some embodiments, the random access configuration information is transmitted, comprising:

[0082] The random access configuration information is transmitted through a system message.

[0083] In some embodiments, the second random access mask index is transmitted to the connected state UE, comprising:

[0084] The second random access mask index is transmitted to the connected state UE through dedicated signaling.

[0085] In a fourth aspect, the embodiments of the present disclosure further provide another random access device for a user equipment (UE), comprising a memory, a transceiver, and a processor;

[0086] The memory is configured to store a computer program; the transceiver is configured to transceive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0087] Receiving random access configuration information transmitted by a network device; the random access configuration information comprises a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource within the residence time of each wave position;

[0088] Determining a random access opportunity (RO) resource based on the random access configuration information;

[0089] Initiating random access based on the RO resource.

[0090] In some embodiments, each RO resource is indexed and sorted according to the time falling within the residence time of each wave position.

[0091] In some embodiments, the UE has a target characteristic combination;

[0092] The random access configuration information further comprises a first random access mask index; the first random access mask index is used to assign to the UE having the target characteristic combination; and there is a mapping relationship between each random access mask index and the RO index;

[0093] Determining a random access opportunity (RO) resource based on the random access configuration information, comprising:

[0094] Determining a first dedicated RO resource from each RO resource corresponding to the PRACH configuration index based on the first random access mask index;

[0095] Initiating random access based on the RO resource, comprising:

[0096] Initiating random access based on the first dedicated RO resource.

[0097] In some embodiments, the UE does not have the target characteristic combination;

[0098] The random access configuration information further includes a first random access mask index; the first random access mask index is used for being assigned to the UE with the target characteristic combination; there is a mapping relationship between each random access mask index and RO index;

[0099] Based on the random access configuration information, the random access opportunity RO resource is determined, including:

[0100] Based on the first random access mask index, the target RO resource currently capable of being used is determined from each RO resource corresponding to the PRACH configuration index except for the first dedicated RO resource;

[0101] Based on the RO resource, the random access is initiated, including:

[0102] Based on the target RO resource, the random access is initiated.

[0103] In some embodiments, the processor is further configured to perform:

[0104] In the connected state, the second random access mask index sent by the network device is received; there is a mapping relationship between each random access mask index and RO index;

[0105] Based on the random access configuration information, the random access opportunity RO resource is determined, including:

[0106] Based on the second random access mask index, the second dedicated RO resource dedicated to the UE is determined from each RO resource corresponding to the PRACH configuration index;

[0107] Based on the RO resource, the random access is initiated, including:

[0108] Based on the second dedicated RO resource, the random access is initiated.

[0109] In some embodiments, in the case that the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0110] The random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

[0111] In some embodiments, in the case that the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0112] In the case that the random access mask index is equal to 11, the RO index includes 9 to 12; in the case that the random access mask index is equal to 12, the RO index includes 13 to 16.

[0113] In some embodiments, the random access configuration information further comprises a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate a dwell time of each beam position.

[0114] Based on the random access configuration information, the random access opportunity RO resource is determined, comprising:

[0115] Based on the number of ROs in the time domain indicated by the PRACH configuration index, the frequency domain multiplexing degree, and the beam hopping pattern, the RO resource is determined.

[0116] In some embodiments, the random access configuration information transmitted by the network device is received, comprising:

[0117] The PRACH configuration index transmitted by the network device through the system message is received.

[0118] In some embodiments, the second random access mask index transmitted by the network device is received in the connected state, comprising:

[0119] The second random access mask index transmitted by the network device through the dedicated signaling is received in the connected state.

[0120] In the fifth aspect, the embodiments of the present disclosure further provide a random access device, comprising:

[0121] The acquisition unit is configured to acquire beam hopping information.

[0122] The first determination unit is configured to determine a physical random access channel PRACH configuration index based on the beam hopping information; the PRACH configuration index indicates that there is at least one random access opportunity RO resource in a dwell time of each beam position.

[0123] The sending unit is configured to send random access configuration information; the random access configuration information comprises the PRACH configuration index.

[0124] In the sixth aspect, the embodiments of the present disclosure further provide another random access device, comprising:

[0125] The receiving unit is configured to receive random access configuration information transmitted by a network device; the random access configuration information comprises a physical random access channel PRACH configuration index; the PRACH configuration index indicates that there is at least one random access opportunity RO resource in a dwell time of each beam position.

[0126] The second determination unit is configured to determine a random access opportunity RO resource based on the random access configuration information.

[0127] The access unit is configured to initiate random access based on the RO resource.

[0128] In a seventh aspect, the present disclosure also provides a processor-readable storage medium, which stores a computer program. The computer program is configured to cause a processor to perform the steps of the random access method according to the first aspect or the steps of the random access method according to the second aspect.

[0129] The present disclosure provides a random access method, device, apparatus and storage medium. The method comprises: obtaining beam hopping information; determining a PRACH configuration index based on the beam hopping information; and ensuring that at least one RO resource is available within the dwell time of each beam position corresponding to the PRACH configuration index. Thus, when a user equipment (UE) determines an RO resource for initiating random access according to the PRACH configuration index, the UE can find an available RO resource in the current beam position to initiate random access, thereby improving the success rate and efficiency of access and ensuring the stability and reliability of access.

[0130] In order to make the above objectives, features and advantages of the present disclosure more apparent, the following will describe preferred embodiments in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0131] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. The drawings are incorporated into the specification and form a part of the specification. The drawings show embodiments consistent with the present disclosure and are used to explain the technical solutions of the present disclosure together with the specification. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be considered as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0132] FIG. 1 shows a schematic diagram of a satellite communication system according to an embodiment of the present disclosure;

[0133] FIG. 2 shows a schematic diagram of the mapping relationship between SSB and RO in a ground communication system according to an embodiment of the present disclosure;

[0134] FIG. 3 shows a flowchart of a random access method according to an embodiment of the present disclosure;

[0135] FIG. 4 shows a schematic diagram of the mapping relationship between RO resources and beam positions according to an embodiment of the present disclosure;

[0136] FIG. 5 shows a schematic diagram of the mapping relationship between RO resources and beam positions according to another embodiment of the present disclosure;

[0137] FIG. 6 shows a schematic diagram of another random access method according to an embodiment of the present disclosure;

[0138] FIG. 7 shows a schematic diagram of a random access device according to an embodiment of the present disclosure;

[0139] FIG. 8 shows a schematic diagram of another random access device according to an embodiment of the present disclosure;

[0140] FIG. 9 shows a schematic diagram of a random access device according to an embodiment of the present disclosure;

[0141] FIG. 10 shows a schematic diagram of another random access device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0142] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the following will be combined with the accompanying drawings for the embodiments of the present disclosure to make a clear and complete description of the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The components of the embodiments of the present disclosure described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed present disclosure, but only represents selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0143] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0144] In the embodiments of the present disclosure, the term "multiple" refers to two or more, and other quantifiers are similar. In the embodiments of the present disclosure, the term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship. In addition, the term "at least one" in this paper means any one of multiple or any combination of at least two of multiple, for example, including at least one of A, B and C, which can mean selecting any one or more elements from the set consisting of A, B and C.

[0145] In the embodiments of the present disclosure, the terms "first", "second" and similar words in the specification and claims and the above drawings do not represent any order, number or importance, but are only used to distinguish different features. It should be understood that the features thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0146] First, the application scenario of the embodiments of the present disclosure is introduced. The embodiments of the present disclosure can be applied in a non-ground communication system (such as a satellite communication system), and referring to FIG. 1, which is a schematic diagram of a satellite communication system related to the embodiments of the present disclosure. The satellite communication system includes a UE and a network device, wherein the network device can include a satellite node (for the convenience of description, only one satellite is shown in the figure, which can be a non-geostationary satellite for example), and can also include a core network device. The UE can perform wireless communication with the satellite node, and the satellite node can perform wireless communication with the core network device, wherein:

[0147] The satellite node can include a base station, and can include an orbit receiver or a repeater for relaying information. The satellite node can communicate with the core network device and provide communication services to the UE. In the embodiments of the present disclosure, the network device interacting with the UE can refer to the base station.

[0148] The UE can include a smart phone, a cellular phone, a smart watch, a smart tablet, a personal digital assistant computer, a laptop computer, a server, a gateway (GW), a controller, a wireless modem, a sensor, a mobility device (such as a bicycle / car / vehicle), and the like.

[0149] It is found through research that in a ground communication system, the cell coverage is fixed, and after the physical random access channel (PRACH) resource is mapped in a PRACH period, the mapping relationship according to the parameter ssb-perRACH-Occasion is configured, so that the random access opportunity (RO) resource corresponding to each synchronization signal block (SSB) is sequentially allocated. The total RO resources in a cell are arranged in a PRACH period, and one SSB index is mapped to at most 8 RO resources. This method ensures that each SSB can be associated with appropriate RO resources, so that user equipment (UE) can successfully access the network in the ground communication system.

[0150] For a contention-based random access process (CBRA), the order of mapping of the SSB index to the RO can be as follows: first, arrange in ascending order of preamble index within one RO; second, arrange in ascending order of frequency resource index for multiple frequency division multiplexed ROs; third, arrange in ascending order of time resource index for time division multiplexed ROs in one PRACH slot; fourth, arrange in ascending order of PRACH slot index. After one round of SSB to RO mapping is completed, the SSB actually transmitted in one SSB period is mapped to the RO once.

[0151] Referring to FIG. 2, FIG. 2 is a schematic diagram of mapping relationship between SSB and RO in a terrestrial communication system provided by an embodiment of the present disclosure. In FIG. 2, the horizontal axis represents time, and the vertical axis represents frequency. Each SSB corresponds to RO resources distributed according to time and frequency. FIG. 2 describes the mapping relationship between different SSBs (SSB1 to SSB4) and RO resources (RO1 to RO8) in a terrestrial system when the frequency domain multiplexing information Msg1-FDM=4 and the number of SSBs mapped to each RO resource ssb-perRACH-Occasion=1 / 8. In the terrestrial system, these mapping relationships are fixed, and each SSB has corresponding RO resources distributed in order.

[0152] However, in the satellite communication system, the beam will jump and scan between different wave positions. In this case, if the RO mapping method of the terrestrial communication system is still used for configuration, it may cause the RO resources mapped by a certain SSB not to be within the dwell time of the wave position. Since the dwell time of the satellite beam in each wave position is limited and dynamically changes, the RO resource mapping in this case cannot ensure that the user equipment successfully accesses the network within the dwell time of the wave position.

[0153] Specifically, the satellite communication system in the beam hopping scenario refers to the beam of the satellite constantly hopping between different geographical positions to cover a larger area. This hopping is performed in time periods, and each beam covers a specific area (called a wave position) in a specific time period (called a dwell time).

[0154] In the satellite beam hopping scenario, the beam hops between different wave positions, and the dwell time of each wave position is limited. If the RO mapping rule of the terrestrial system is still used, in the case where one SSB is mapped to one wave position, when an SSB is mapped to a certain wave position, if there is no RO resource (such as RO1, RO2, etc.) corresponding to the SSB within the dwell time of the wave position, the user equipment (UE) cannot find a suitable RO resource for random access attempt within the dwell time of the wave position, resulting in access failure.

[0155] For example, it is assumed that the beam in the satellite system hops from wave position 1 to wave position 2. If the RO mapping method of the terrestrial system is used, SSB1 corresponds to wave position 1, the RO resource mapped by SSB1 is within the dwell time of wave position 1, SSB2 corresponds to wave position 2, but since the RO resources are allocated in order, the RO resource mapped by SSB2 may still be within the dwell time of wave position 1, but not within the dwell time of wave position 2, resulting in that SSB2 maps unusable RO resources.

[0156] Based on the above research, the present disclosure provides a random access method, device, apparatus and storage medium, by acquiring beam hopping information, determining the PRACH configuration index based on the beam hopping information, and ensuring that at least one RO resource is available within the residence time of each beam position corresponding to the PRACH configuration index, so that when the user equipment UE determines the RO resource to initiate random access according to the PRACH configuration index, it can find the available RO resource to initiate random access in the current beam position, improve the success rate and efficiency of access, and ensure the access stability and reliability of the system.

[0157] The above-mentioned defects are the results of the inventors' practice and careful research, and therefore, the discovery process of the above-mentioned problems and the solutions proposed by the present disclosure to solve the above-mentioned problems should be the contributions of the inventors to the present disclosure.

[0158] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0159] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0160] The embodiments of the present disclosure provide a random access method, device, apparatus and storage medium to solve the efficiency problem caused by the fact that the RO resource is not in the beam position residence time in the satellite communication system.

[0161] The method and the apparatus are based on the same inventive concept, and since the principles of solving problems are similar, the implementation of the apparatus and the method can be referred to each other, and the repeated parts will not be described.

[0162] The technical solutions provided by the embodiments of the present disclosure can be applied to various communication systems. For example, the applicable communication systems can be a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a long term evolution advanced (LTE-A) system, a universal mobile system (UMTS), a worldwide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, and an evolved communication system thereof. The various systems can include terminal devices and network devices. The system can also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), and the like. The above systems can include multiple networks.

[0163] The terminal device (or terminal) involved in the embodiments of the present disclosure can refer to a device providing voice and / or data connectivity for a user in a device with wireless connection function, a handheld device, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device can also be different, for example, in the 5G system, the terminal device can be called user equipment (User Equipment, UE). The wireless terminal device can be a USB storage device, other personal computer memory devices and a dongle, and can also communicate with one or more core networks (Core Network, CN) through a radio access network (Radio Access Network, RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or called "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, personal communication service (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA), personal computers, tablet computers, machine type communication (Machine-type Communication, MTC) terminal devices, etc. The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, and a wireless access device and router / modem that meet the definition limit, etc. The embodiments of the present disclosure are not limited.

[0164] The network device related to the embodiments of the present disclosure can include a base station. The base station can include a plurality of cells serving terminals. According to different application scenarios, the base station can also be referred to as an access point, or can be a device in an access network that communicates with wireless terminal devices through one or more sectors over an air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets as a router between wireless terminal devices and the rest of the access network, which can include an Internet Protocol (IP) communication network. The network device can also coordinate the management of the properties of the air interface. For example, the network device related to the embodiments of the present disclosure can be an evolved network device (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a 5G network architecture, etc., and can also be a home evolved base station (HeNB), a relay node, a femto, a pico, a network test device, a satellite base station, etc. The embodiments of the present disclosure are not limited. In some network structures, the network device can include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit can also be arranged geographically apart.

[0165] The random access method provided by the embodiments of the present disclosure will be described below taking the network device as an execution subject.

[0166] Referring to FIG. 3, a flowchart of a random access method provided by the embodiments of the present disclosure is shown, and the method includes steps S301-S303.

[0167] S301, acquiring beam hopping information.

[0168] The beam hopping information can indicate switching between different beams and residence time distribution. For example, the beam hopping information can be embodied by a beam hopping pattern.

[0169] The beam hopping pattern can include at least one of a timing rule, a residence time, a beam selection order, a beam switching strategy, etc.

[0170] The timing rule describes the time sequence of beam hopping scanning, and can include information such as beam scanning period, interval, duration, beam position order, etc. For example, it can be specified to switch the beam once every certain time.

[0171] The dwell time indicates the dwell start time and the dwell time length of each wave position. A longer dwell time length can increase the stability of the communication quality, but may also reduce the system's response ability to dynamic changes.

[0172] The beam selection order specifies the order or priority of selecting which beams to use when beam hopping scanning, which can be dynamically adjusted according to channel state, device location, or network load conditions.

[0173] The beam switching strategy describes the specific strategy and algorithm of beam hopping scanning. For example, based on previous communication quality feedback or predicted channel state to perform beam hopping scanning.

[0174] S302, based on the beam hopping information, determine the physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource in the dwell time of each wave position.

[0175] The physical random access channel (PRACH) configuration index is used to indicate and configure the index value of the relevant parameters required by the user equipment (UE) when performing random access. With the index value, the corresponding PRACH configuration can be determined.

[0176] The PRACH configuration index is used to determine how to configure the PRACH resource in each cell, so that the user equipment (UE) can send a random access request at a specified time and frequency to establish a connection with the base station.

[0177] Referring to Table 1, the PRACH configuration table provided by the embodiment of the present disclosure is shown. The PRACH configuration in Table 1 includes information such as preamble format, subframe with corresponding RO resource (through n f mod x=y represents), subframe number with corresponding RO resource, starting symbol, number of PRACH slots within a subframe, number of RO resources within each PRACH slot (number of time-domain PRACH occasions within a PRACH slot), PRACH duration, etc.

[0178] Table 1 ​

[0179] As can be seen, when the PRACH configuration index is 146, the preamble format can be A2 / B2; n f x in mod x=y is 1, y is 0, that is, the modulus value of the subframe number modulo 1 is equal to 0, that is, each subframe has an RO resource; the subframe numbers with RO resources include 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9; the starting symbol indicates that each system frame starts from the 0th symbol; the number of PRACH slots in each subframe is 2; the number of RO resources in each PRACH slot is 3; and the duration of the PRACH is 4 symbols.

[0180] In this step, for each beam position, the residence time of each beam position can be determined according to the beam hopping information, and the number of RO resources required for each beam position can be determined. Then, the PRACH configuration can be traversed to determine the PRACH configuration that can enable at least one random access opportunity RO resource within the residence time of each beam position, and the PRACH configuration index corresponding to the PRACH configuration can be determined.

[0181] In this way, under the PRACH configuration, no matter what beam position the UE is in, the UE can use the RO resource corresponding to the beam position for random access.

[0182] Notably, the RO resources can be indexed and sorted according to the time falling within the residence time of each beam position, that is, the RO resource falling within the residence time of the beam position and having an index value of 1 is closest to the start time of the residence time of the beam position and is after the start time of the residence time of the beam position.

[0183] The network device can reach a consensus with the corresponding UE that the RO resources can be indexed and sorted according to the time falling within the residence time of each beam position. In this way, the RO resources can be mapped to the beam positions, and when the UE determines the RO resources using the random access configuration information, it is ensured that the RO resources are located within the current beam position.

[0184] Referring to FIG. 4, which shows one of the mapping relationships between the RO resources and the beam positions provided by the embodiments of the present disclosure. In FIG. 4, the horizontal axis represents time, and the vertical axis represents frequency. The RO resources corresponding to each beam position are distributed according to time and frequency. FIG. 4 describes the mapping relationship between different beam positions (beam position 1 to beam position 4) and RO resources (RO1 to RO8 and subsequent RO resources) when the frequency domain multiplexing information Msg1-FDM=4 and the number of time domain ROs falling within each beam position is greater than 2 in a satellite communication system. Notably, in a ground communication system, 1 SSB usually maps up to 8 RO resources, while in the embodiments of the present disclosure, 1 beam position can map more than 8 RO resources.

[0185] S303, sending random access configuration information; the random access configuration information includes a PRACH configuration index.

[0186] The random access configuration information can be used by a user equipment (UE) to determine RO resources for initiating random access, and initiate random access based on the RO resources.

[0187] After determining the PRACH configuration index, the determined PRACH configuration index and other random access configuration information can be sent. For example, the information can be sent through cell broadcast, satellite system message broadcast, broadcast channel, ground station, dedicated signaling, etc.

[0188] In one possible implementation, the random access configuration information can be sent through system message.

[0189] After sending the random access configuration information, UEs in the reception range can receive the random access configuration information, and use the random access configuration information to determine RO resources for initiating random access, and initiate random access based on the RO resources.

[0190] For example, in addition to the PRACH configuration index, the random access configuration information can also include at least one of frequency domain multiplexing degree, beam hopping pattern, random access mask index, subframe-level random access configuration information, and other control parameters.

[0191] The PRACH configuration corresponding to the PRACH configuration index can indicate which resource blocks are configured as random access channels in each subframe, to help the UE determine in which time slot random access can be performed.

[0192] The frequency domain multiplexing degree can represent that the frequency domain resources allocated to the random access channel are divided into several parts, and this parameter can affect the frequency domain resource allocation of the random access channel.

[0193] The beam hopping pattern can describe the hopping rule of each beam in the satellite communication system.

[0194] The random access mask index is used by the UE to select appropriate resources for random access from the resource blocks indicated by the PRACH configuration index according to a specific random access mask. Each random access mask index is associated with a set of available random access resources.

[0195] The subframe-level random access configuration information includes the number of RO resources in each subframe indicated by the PRACH configuration index and their time domain distribution. This information tells the device the arrangement of random access resources in time within each subframe.

[0196] Other control parameters can include other control parameters related to time slot configuration, transmission parameters, power control, etc., which affect the specific way and timing of the device initiating a random access request.

[0197] Since one SSB corresponds to one wave position in the embodiments of the present disclosure, the RO resources that can be used can be directly determined according to the PRACH configuration index.

[0198] In a possible implementation, the random access configuration information can further include a frequency domain multiplexing degree. The UE can determine which RO resources are available by using the wave beam pattern and the number of ROs in the time domain indicated by the PRACH configuration index, and divide the available RO resources into multiple frequency degrees based on the frequency domain multiplexing degree and sort them.

[0199] Referring to FIG. 5, which is a second schematic diagram of the mapping relationship between the RO resources and the wave positions provided by the embodiments of the present disclosure. In FIG. 5, the horizontal axis represents time, and the vertical axis represents frequency. The RO resources corresponding to each wave position are distributed according to time and frequency. In an implementation, if the frequency domain multiplexing degree is 2, the number of ROs in each subframe is 12, and the wave position residence time is 1 ms, the RO resources on the frequency degree 1 can include RO1, RO3, RO5, RO7, RO9, RO11, and the RO resources on the frequency degree 2 can include RO2, RO4, RO6, RO8, RO10, and RO12. In addition, the time slot corresponding to RO1 is closest to the start time of the wave position residence time, and RO1 to RO12 are arranged according to the time sequence.

[0200] Generally, the random access procedure can include a competitive random access and a non-competitive random access. In the competitive random access, multiple devices can attempt to use the same random access resource at the same time. The base station needs to use a collision detection mechanism (such as random access collision detection) to handle the case where multiple devices request at the same time.

[0201] In the non-competitive random access, the network device can pre-allocate a predetermined resource for the UE for use by a specific UE. For example, the network device can carry a random access mask index in the random access configuration information to help the device select appropriate resources on the random access channel (PRACH) to send a preliminary request (such as a preamble) to request the network to allocate resources to establish a connection.

[0202] The random access mask index (PRACH Mask Index) can be a number or identifier used to determine which resource block (i.e., RO resource) in which random access channel PRACH configuration index the device sends a random access request. Through the random access mask index, the UE can select the RO resource that can be used according to the network side configured random access resource rule within the PRACH period. This can avoid conflicts and improve access efficiency.

[0203] For example, the random access configuration information can also include a first random access mask index. After determining the PRACH configuration index, the network device can determine a first dedicated RO resource for the user equipment UE that meets the target characteristic combination in each RO resource corresponding to the PRACH configuration index, and determine a first random access mask index corresponding to the first dedicated RP resource.

[0204] Wherein, there is a mapping relationship between each random access mask index and RO index; the first random access mask index is used for the UE that meets the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.

[0205] For example, the above target characteristic combination can refer to a feature combination (Feature Combination). The characteristic combination refers to the combination of multiple different characteristics or functions in technology or product design to meet specific needs or achieve specific goals. In a communication system, the feature combination can refer to the integration or cooperative work of multiple communication technologies to provide better user experience or more efficient communication services. For example, combining multi-carrier communication (Multi-carrier Communication) with adaptive modulation (Adaptive Modulation) to optimize data transmission rate and reliability under different conditions.

[0206] In some possible implementations, the UE in the connected state can need to re-perform random access. For example, when the connected state UE moves to a new cell, it needs to re-access the new cell to maintain communication connection. In this case, the UE will perform a random access process to obtain the control channel resource of the new cell to ensure continuous communication service. If the network side re-allocates or reconfigures the time and space resources, it may affect the service of the connected state UE. In this case, the UE can need to re-perform random access to adapt to the new resource allocation situation.

[0207] In the above case, the network device can also allocate a dedicated RO resource for the UE to quickly reconnect with the network device, so the network device can send a second random access mask index to the connected state UE through dedicated signaling to improve efficiency.

[0208] Since in the embodiments of the present disclosure, multiple RO resources can be mapped under one wave position, and the current communication system can only identify a preset maximum number of RO resources (such as a preset maximum number of 8 in ground communication), the UE and the network device can identify specific RO resources by mapping between the random access mask index and the RO index.

[0209] In a possible implementation, for the case that one SSB corresponds to multiple RO resources, or the case that one wave position corresponds to multiple RO resources in a satellite scenario, if the number of RO resources of each wave position is greater than the preset maximum number, the mapping relationship between the random access mask index and the RO index can include:

[0210] The random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

[0211] For example, the following formula can be used to determine that the random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1:

[0212] PRACH Mask Index = [RO_index mod 8] + 1

[0213] Wherein, PRACH Mask Index is the random access mask index, and RO_index is the RO index.

[0214] For example, if the index value of the random access mask index is 3, and the preset maximum number is 8, and the number of RO resources of the wave position is 12, the RO resource corresponding to the random access mask index can include RO2 and RO10.

[0215] In another possible implementation, if the number of RO resources of each wave position is greater than the preset maximum number, the mapping relationship between the random access mask index and the RO index can include:

[0216] In the case that the random access mask index is equal to 11, the RO index can include 9 to 12; in the case that the random access mask index is equal to 12, the RO index can include 13 to 16.

[0217] Since in the current communication system, when the random access mask index is less than or equal to 8, the random access mask index is equal to the RO index, when the random access mask index is equal to 9, it represents all RO resources with even indexes, and when the random access mask index is equal to 10, it represents all RO resources with odd indexes, therefore, the random access mask index greater than 10 can be mapped to the RO index after 8, and one random access mask index can be mapped to multiple RO indexes.

[0218] In a specific implementation process, if the dedicated RO resource is allocated for the UE of FeatureCombination, the ssb-SharedRO-MaskIndex parameter can be configured.

[0219] Referring to Table 2, a mapping relationship between a random access mask index and an RO index in a ground communication system before applying the embodiment of the present disclosure is shown. The random access mask index can be represented as PRACH Mask Index or msgA-SSB-SharedRO-MaskIndex, and the available RO resource of SSB can be represented as Allowed PRACH occasion(s) of SSB.

[0220] Table 2

[0221] It can be seen that when the random access mask index is 0, the index of the corresponding available RO resource is all RO indexes; when the random access mask index is 1, the index (PRACH occasion index) of the corresponding available RO resource is 1, and so on; when the random access mask index is 8, the index of the corresponding available RO resource is 8; when the random access mask index is 9, the corresponding available RO resource is each RO resource with an even index; when the random access mask index is 10, the corresponding available RO resource is each RO resource with an odd index; and when the random access mask index is 11 to 15, the corresponding RO resource is empty and in a reserved state to be mapped.

[0222] In the embodiment of the present disclosure, in the case that the random access mask index is equal to 11, the RO index can include 9 to 12; and in the case that the random access mask index is equal to 12, the RO index can include 13 to 16.

[0223] Referring to Table 3, a mapping relationship between a random access mask index and an RO index provided by the embodiment of the present disclosure is shown.

[0224] Table 3

[0225] It can be seen that when the random access mask index is 0-10, the RO resource corresponding to the random access mask index is consistent with the ground communication system; when the random access mask index is 11, the available RO resource corresponding to the random access mask index is the RO resource with index 9 to 12; and when the random access mask index is 12, the available RO resource corresponding to the random access mask index is the RO resource with index 13 to 16. Compared with the ground communication system, the embodiment of the present disclosure can support mapping the random access mask index to more RO resources, and can map the random access mask index of 13, 14, 15, etc. to other RO resources by using the reserved bits, such as PRACH occasion index 17-19, PRACH occasion index 20-12, PRACH occasion index 23-25, etc.

[0226] The above embodiment of the present disclosure introduces a method of performing random access in the case of one SSB corresponding to one wave bit. For the case of multiple SSBs corresponding to one wave bit, the available RO resources can be determined in combination with the SSB index obtained when the SSB is received. That is, the UE can determine the SSB corresponding to the SSB index among all RO resources of the current wave bit according to the SSB index.

[0227] For example, if the current wave bit corresponds to 12 RO resources, and the current wave bit corresponds to 2 SSBs, and the index value of the SSB index is 2, the UE can determine RO7 to RO12 as the available RO resources corresponding to SSB2 among RO1 to RO12 according to the SSB index.

[0228] In this way, by the above method, the number of mapped RO resources can be increased, thereby expanding the resource pool, allowing the device to have more choices, reducing the possibility of collision, reducing the PRACH collision probability, thereby improving the access success rate, reducing the communication delay and network load, and improving the overall efficiency and performance of the system.

[0229] It is worth noting that when the network device carries the first random access mask index in the random access configuration information sent by the network device, the UE can determine whether to use the first dedicated RO resource corresponding to the first random access mask index according to whether the UE has the target characteristic combination corresponding to the first random access mask index.

[0230] For example, if the UE has the target characteristic combination, the UE can determine the first dedicated RO resource based on the first random access mask index, and initiate the access based on the first dedicated RO resource; if the UE does not have the target characteristic combination, the UE can determine the target RO resource currently available from the RO resources corresponding to the PRACH configuration index except the first RO resource based on the first random access mask index, and initiate the random access based on the target RO resource.

[0231] Referring to FIG. 6, a schematic diagram of another random access method provided by the embodiments of the present disclosure is shown. The execution subject of the method can be a user equipment (UE). The method comprises the following steps:

[0232] S601, receiving random access configuration information sent by a network device; the random access configuration information comprises a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource within the residence time of each wave position;

[0233] S602, determining a random access opportunity (RO) resource based on the random access configuration information;

[0234] S603, initiating random access based on the RO resource.

[0235] In some embodiments, each RO resource is indexed and sorted according to the time falling within the residence time of each wave position.

[0236] In some embodiments, the UE has a target characteristic combination;

[0237] The random access configuration information further comprises a first random access mask index; the first random access mask index is used to assign to the UE having the target characteristic combination; there is a mapping relationship between each random access mask index and RO index;

[0238] Determining a random access opportunity (RO) resource based on the random access configuration information comprises:

[0239] Determining a first dedicated RO resource from each RO resource corresponding to the PRACH configuration index based on the first random access mask index;

[0240] Initiating random access based on the RO resource comprises:

[0241] Initiating random access based on the first dedicated RO resource.

[0242] In some embodiments, the UE does not have a target characteristic combination;

[0243] The random access configuration information further comprises a first random access mask index; the first random access mask index is used to assign to the UE having the target characteristic combination; there is a mapping relationship between each random access mask index and RO index;

[0244] Determining a random access opportunity (RO) resource based on the random access configuration information comprises:

[0245] Determining a target RO resource currently available except for the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index based on the first random access mask index;

[0246] initiating random access based on the RO resource, including:

[0247] initiating random access based on the target RO resource.

[0248] In some embodiments, the method further includes:

[0249] receiving, in the connected state, a second random access mask index sent by the network device; there is a mapping relationship between each random access mask index and RO index;

[0250] determining, based on the random access configuration information, a random access opportunity (RO) resource, including:

[0251] determining, based on the second random access mask index, a second dedicated RO resource dedicated to the UE from each RO resource corresponding to the PRACH configuration index;

[0252] initiating random access based on the RO resource, including:

[0253] initiating random access based on the second dedicated RO resource.

[0254] In some embodiments, in a case where the number of RO resources per wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0255] the random access mask index is equal to a value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

[0256] In some embodiments, in a case where the number of RO resources per wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0257] in a case where the random access mask index is equal to 11, the RO index includes 9 to 12; and in a case where the random access mask index is equal to 12, the RO index includes 13 to 16.

[0258] In some embodiments, the random access configuration information further includes a frequency domain multiplexing degree and a jump beam pattern; the jump beam pattern is used to indicate a dwell time per wave position.

[0259] determining, based on the random access configuration information, a random access opportunity (RO) resource, including:

[0260] determining the RO resource based on the number of ROs in the time domain per subframe indicated by the PRACH configuration index, the frequency domain multiplexing degree, and the jump beam pattern.

[0261] In some embodiments, the random access configuration information sent by the network device includes:

[0262] The receiving network device sends a PRACH configuration index through a system message.

[0263] In some embodiments, the second random access mask index sent by the receiving network device in the connected state is received through dedicated signaling.

[0264] The receiving network device sends a second random access mask index through dedicated signaling in the connected state.

[0265] Those skilled in the art can understand that in the above method of the specific embodiment, the writing order of each step does not mean a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0266] Corresponding to the above random access method, the embodiments of the present disclosure also provide a random access device. Referring to FIG. 7, it is a schematic diagram of a random access device provided by the embodiments of the present disclosure. The device can be deployed in a network device and can include:

[0267] The memory 710 is configured to store a computer program; and the transceiver 720 is configured to receive and send data under the control of the processor 730. The processor 730 and the memory 710 can also be arranged physically separately.

[0268] In FIG. 7, the bus architecture can include any number of interconnected buses and bridges, which are linked together by various circuits of the processor 730 representing one or more processors and the memory 710 representing a memory. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers and power management circuits, which are well known in the art, and therefore, they will not be further described herein. The bus interface provides an interface. The transceiver 720 can be a plurality of elements, i.e., including a transmitter and a receiver, which provides a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables and other transmission media. The processor 730 is responsible for managing the bus architecture and general processing, and the memory 710 can store data used by the processor 730 in performing operations.

[0269] The processor 730 can be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0270] The processor 730, by invoking the computer program stored in the memory 710, is configured to perform any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions, for example:

[0271] obtain beam hopping information;

[0272] determine a physical random access channel (PRACH) configuration index based on the beam hopping information; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource within the dwell time of each beam position;

[0273] send random access configuration information; the random access configuration information includes the PRACH configuration index.

[0274] In some embodiments, each RO resource is indexed and sorted according to the time falling within the dwell time of each beam position.

[0275] In some embodiments, the processor 710 is further configured to perform:

[0276] The random access configuration information further includes a first random access mask index;

[0277] In each RO resource corresponding to the PRACH configuration index, a first dedicated RO resource is determined for a user equipment (UE) satisfying a target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined;

[0278] wherein a mapping relationship exists between each random access mask index and RO index; the first random access mask index is used for the UE satisfying the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.

[0279] In some embodiments, the processor 710 is further configured to perform:

[0280] In each RO resource corresponding to the PRACH configuration index, a second dedicated RO resource is determined for a connected state UE, and a second random access mask index corresponding to the second dedicated RO resource is determined; wherein a mapping relationship exists between each random access mask index and RO index; the second random access mask index is used to determine the second dedicated RO resource from each RO resource;

[0281] The second random access mask index is sent to the connected state UE.

[0282] In some embodiments, in the case that the number of RO resources in each beam position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0283] The random access mask index is equal to a value obtained by performing a modulo operation on the RO index plus 1, and the modulus of the modulo operation is equal to the preset maximum number.

[0284] In some embodiments, in a case where the number of RO resources in each wave position is greater than the preset maximum number, the mapping relationship between the random access mask index and the RO index includes:

[0285] In a case where the random access mask index is equal to 11, the RO index includes 9 to 12; and in a case where the random access mask index is equal to 12, the RO index includes 13 to 16.

[0286] In some embodiments, the random access configuration information further includes a frequency domain multiplexing degree and a skip beam pattern; the skip beam pattern is used to indicate a dwell time of each wave position.

[0287] The frequency domain multiplexing degree, the skip beam pattern, and the number of ROs in the time domain indicated by the PRACH configuration index are used to determine the RO resource for initiating random access.

[0288] In some embodiments, the random access configuration information is transmitted, including:

[0289] The random access configuration information is transmitted through a system message.

[0290] In some embodiments, the second random access mask index is transmitted to the connected state UE, including:

[0291] The second random access mask index is transmitted to the connected state UE through dedicated signaling.

[0292] The embodiments of the present disclosure further provide another random access device. Referring to FIG. 8, it is a schematic diagram of another random access device provided by the embodiments of the present disclosure. The device can be deployed in a user equipment, and can include:

[0293] The memory 810 is configured to store a computer program; and the transceiver 820 is configured to receive and send data under the control of the processor 830. The processor 830 and the memory 810 can also be arranged physically separately.

[0294] In Figure 8, the bus architecture can include any number of interconnected buses and bridges, specifically, various circuit links between one or more processors, represented by the processor 830, and the memory, represented by the memory 810. The bus architecture can also link various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, and thus, are not further described herein. The bus interface provides an interface. The transceiver 820 can be a plurality of elements, i.e., including a transmitter and a receiver, providing a unit for communicating with various other devices on transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 830 is responsible for managing the bus architecture and general processing, and the memory 810 can store data used by the processor 830 in performing operations.

[0295] The processor 830 can be a central processor (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0296] The processor 830, by invoking the computer program stored in the memory 810, is configured to perform any of the methods provided by the embodiments of the present disclosure according to the executable instructions obtained, for example:

[0297] receiving random access configuration information sent by a network device; the random access configuration information includes a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource within the residence time of each wave position;

[0298] determining a random access opportunity (RO) resource based on the random access configuration information;

[0299] initiating random access based on the RO resource.

[0300] In some embodiments, each RO resource is indexed and sorted according to the time falling within the residence time of each wave position.

[0301] In some embodiments, the UE has a target characteristic combination;

[0302] The random access configuration information further includes a first random access mask index; the first random access mask index is used to assign to the UE with the target characteristic combination; there is a mapping relationship between each random access mask index and the RO index;

[0303] determining a random access opportunity (RO) resource based on the random access configuration information, comprising:

[0304] determining a first dedicated RO resource from the RO resources corresponding to the PRACH configuration index based on a first random access mask index;

[0305] initiating a random access based on the RO resource, comprising:

[0306] initiating the random access based on the first dedicated RO resource.

[0307] In some embodiments, the UE does not have the target characteristic combination;

[0308] The random access configuration information further comprises the first random access mask index; the first random access mask index is used to be assigned to the UE having the target characteristic combination; and there is a mapping relationship between each random access mask index and RO index;

[0309] determining a random access opportunity (RO) resource based on the random access configuration information, comprising:

[0310] determining a target RO resource currently available except the first dedicated RO resource from the RO resources corresponding to the PRACH configuration index based on a first random access mask index;

[0311] initiating a random access based on the RO resource, comprising:

[0312] initiating the random access based on the target RO resource.

[0313] In some embodiments, the processor 610 is further configured to perform:

[0314] receiving a second random access mask index sent by the network device in the connected state; there is a mapping relationship between each random access mask index and RO index;

[0315] determining a random access opportunity (RO) resource based on the random access configuration information, comprising:

[0316] determining a second dedicated RO resource specific to the UE from the RO resources corresponding to the PRACH configuration index based on a second random access mask index;

[0317] initiating a random access based on the RO resource, comprising:

[0318] initiating the random access based on the second dedicated RO resource.

[0319] In some embodiments, in a case where the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index comprises:

[0320] The random access mask index is equal to a value obtained by performing a modulo operation on the RO index plus 1, and the modulus of the modulo operation is equal to the preset maximum number.

[0321] In some embodiments, in a case where the number of RO resources in each wave position is greater than the preset maximum number, the mapping relationship between the random access mask index and the RO index includes:

[0322] In a case where the random access mask index is equal to 11, the RO index includes 9 to 12; and in a case where the random access mask index is equal to 12, the RO index includes 13 to 16.

[0323] In some embodiments, the random access configuration information further includes a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate a dwell time of each wave position.

[0324] Based on the random access configuration information, the random access opportunity RO resource is determined, including:

[0325] Based on the number of ROs in the time domain of each subframe indicated by the PRACH configuration index, the frequency domain multiplexing degree, and the beam hopping pattern, the RO resource is determined.

[0326] In some embodiments, the random access configuration information transmitted by the network device is received, including:

[0327] The PRACH configuration index transmitted by the network device through a system message is received.

[0328] In some embodiments, the second random access mask index transmitted by the network device is received in the connected state, including:

[0329] The second random access mask index transmitted by the network device through dedicated signaling is received in the connected state.

[0330] Referring to FIG. 9, a schematic diagram of a random access device provided by an embodiment of the present disclosure is shown. The device can be applied to a network device, and the device includes:

[0331] The acquisition unit 910 is configured to acquire beam hopping information.

[0332] The first determination unit 920 is configured to determine a physical random access channel (PRACH) configuration index based on the beam hopping information; the PRACH configuration index indicates that at least one random access opportunity (RO) resource exists in a dwell time of each wave position.

[0333] The sending unit 930 is configured to send random access configuration information; the random access configuration information includes the PRACH configuration index.

[0334] In some embodiments, the RO resources are indexed and sorted according to time falling within the dwell time of each wave position.

[0335] In some embodiments, the first determining unit 920 is further configured to:

[0336] The first random access mask index is further included in the random access configuration information.

[0337] In the RO resources corresponding to the PRACH configuration index, a first dedicated RO resource is determined for a user equipment (UE) satisfying the target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined.

[0338] The mapping relationship exists between each random access mask index and RO index; the first random access mask index is used for the UE satisfying the target characteristic combination to determine the first dedicated RO resource from the RO resources corresponding to the PRACH configuration index.

[0339] In some embodiments, the first determining unit 920 is further configured to:

[0340] In the RO resources corresponding to the PRACH configuration index, a second dedicated RO resource is determined for a connected state user equipment (UE), and a second random access mask index corresponding to the second dedicated RO resource is determined; a mapping relationship exists between each random access mask index and RO index; the second random access mask index is used to determine the second dedicated RO resource from the RO resources.

[0341] The sending unit 930 is further configured to:

[0342] Send the second random access mask index to the connected state UE.

[0343] In some embodiments, in the case where the number of RO resources in each wave position is greater than the preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0344] The random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

[0345] In some embodiments, in the case where the number of RO resources in each wave position is greater than the preset maximum number, the mapping relationship between each random access mask index and RO index includes:

[0346] In the case where the random access mask index is equal to 11, the RO index includes 9 to 12; in the case where the random access mask index is equal to 12, the RO index includes 13 to 16.

[0347] In some embodiments, the random access configuration information further includes a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate the residence time of each wave position.

[0348] The frequency domain multiplexing degree, the beam hopping pattern, and the RO quantity of each subframe indicated by the PRACH configuration index in the time domain, are used to determine the RO resource for initiating random access.

[0349] In some embodiments, the sending unit 930 is configured to:

[0350] The random access configuration information is sent through a system message.

[0351] In some embodiments, the sending unit 930 is configured to:

[0352] The second random access mask index is sent to the connected state UE through dedicated signaling.

[0353] Referring to FIG. 10, shown is a schematic diagram of another random access apparatus provided by embodiments of the present disclosure. The apparatus can be applied to a user equipment, and the apparatus includes:

[0354] The receiving unit 1010 is configured to receive random access configuration information sent by a network device, wherein the random access configuration information includes a physical random access channel (PRACH) configuration index, and the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource in each beam dwell time;

[0355] The second determining unit 1020 is configured to determine, based on the random access configuration information, the RO resource.

[0356] The accessing unit 1030 is configured to initiate random access based on the RO resource.

[0357] In some embodiments, each RO resource is indexed and sorted according to time falling within each beam dwell time.

[0358] In some embodiments, the UE has a target characteristic combination.

[0359] The random access configuration information further includes a first random access mask index, the first random access mask index is used to be assigned to the UE having the target characteristic combination, and there is a mapping relationship between each random access mask index and RO index.

[0360] The second determining unit 1020 is configured to:

[0361] Based on the first random access mask index, determine a first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.

[0362] The accessing unit 1030 is configured to:

[0363] Initiate random access based on the first dedicated RO resource.

[0364] In some embodiments, the UE does not have the target characteristic combination.

[0365] The random access configuration information further includes a first random access mask index; the first random access mask index is used for being assigned to the UE with the target characteristic combination; and a mapping relationship exists between each random access mask index and an RO index;

[0366] The second determining unit 1020 is configured to:

[0367] determine, based on the first random access mask index, a target RO resource currently capable of being used from each RO resource corresponding to the PRACH configuration index except for the first dedicated RO resource;

[0368] The access unit 1030 is configured to:

[0369] initiate random access based on the target RO resource.

[0370] In some embodiments, the receiving unit 1010 is further configured to:

[0371] receive, in the connected state, a second random access mask index sent by the network device; and a mapping relationship exists between each random access mask index and an RO index;

[0372] The second determining unit 1020 is configured to:

[0373] determine, based on the second random access mask index, a second dedicated RO resource dedicated to the UE from each RO resource corresponding to the PRACH configuration index;

[0374] The access unit 1030 is further configured to:

[0375] initiate random access based on the second dedicated RO resource.

[0376] In some embodiments, in a case where the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and an RO index includes:

[0377] The random access mask index is equal to a value obtained by performing a modulo operation on the RO index and adding 1, and a modulus value of the modulo operation is equal to the preset maximum number.

[0378] In some embodiments, in a case where the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and an RO index includes:

[0379] In a case where the random access mask index is equal to 11, the RO index includes 9 to 12; and in a case where the random access mask index is equal to 12, the RO index includes 13 to 16.

[0380] In some embodiments, the random access configuration information further includes a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used for indicating a dwell time of each wave position.

[0381] determining a random access opportunity (RO) resource based on the random access configuration information, including:

[0382] determining the RO resource based on the number of ROs in the time domain, the frequency domain multiplexing degree, and the beam hopping pattern per subframe indicated by the PRACH configuration index.

[0383] In some embodiments, the receiving unit 1010 is configured to:

[0384] receiving the PRACH configuration index sent by the network device through a system message.

[0385] In some embodiments, the receiving unit 1010 is configured to:

[0386] receiving the second random access mask index sent by the network device through dedicated signaling in the connected state.

[0387] It should be noted that the division of units in the embodiments of the present disclosure is illustrative, and is only a logical function division. In actual implementation, another division manner can be used. In addition, each functional unit in each embodiment of the present disclosure can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0388] When the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present disclosure, essentially or in part, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in the various embodiments of the present disclosure. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and various other media that can store program codes.

[0389] It should be noted that the above-described apparatus provided by the embodiments of the present disclosure can implement all the method steps achieved by the method embodiments, and can achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments in the embodiments of the present disclosure will not be described in detail.

[0390] In another aspect, the embodiments of the present disclosure further provide a processor-readable storage medium, which stores a computer program for causing a computer to execute the random access method provided by any of the above-mentioned embodiments.

[0391] It should be noted that the computer-readable storage medium provided by the embodiments of the present disclosure can implement all the method steps of the above-mentioned method embodiments, and can achieve the same technical effects. Therefore, the same parts and beneficial effects of the embodiments of the present disclosure as the method embodiments will not be described in detail.

[0392] The processor-readable storage medium can be any available medium or data storage device that can be accessed by a computer, including but not limited to a magnetic storage (such as a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical storage (such as a CD, a DVD, a BD, a HVD, etc.), and a semiconductor memory (such as a ROM, an EPROM, an EEPROM, a NAND FLASH, a solid-state disk (SSD)), etc.

[0393] The embodiments of the present disclosure further provide a computer program product, which, when invoked by a computer, causes the computer to execute the steps of the random access method as described above.

[0394] Those skilled in the art should understand that the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to a magnetic disk storage and an optical storage, etc.) containing computer-usable program code.

[0395] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer executable instructions. These computer executable instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the computer or other programmable data processing apparatus produce the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0396] These processor-executable instructions can also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart(s) or flowchart block or blocks and / or the function specified in the block diagram block or blocks.

[0397] These processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart(s) or flowchart block or blocks and / or the functions specified in the block diagram block or blocks.

[0398] Obviously, numerous modifications and variations of the present disclosure are possible in light of the above teachings. It is therefore to be understood that within the scope of the present disclosure, the disclosure can be practiced otherwise than as specifically set out herein. Accordingly, any one of the modifications or variations above can be combined with any other of the modifications or variations above to produce yet further modifications and variations within the scope of the present disclosure.

Claims

1. A random access method wherein, The method is applied to a network device, and comprises: obtaining beam hopping information; based on the beam hopping information, determining a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource in the residence time of each beam position; sending random access configuration information; the PRACH configuration index is included in the random access configuration information.

2. The method of claim 1, wherein, Each of the RO resources is indexed and sorted according to the time falling within the residence time of each beam position.

3. The method of claim 2, wherein, The method further comprises: The random access configuration information further comprises a first random access mask index; In each of the RO resources corresponding to the PRACH configuration index, a first dedicated RO resource is determined for a user equipment (UE) satisfying a target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined; Wherein, there is a mapping relationship between each random access mask index and RO index; the first random access mask index is used for the UE satisfying the target characteristic combination to determine the first dedicated RO resource from each of the RO resources corresponding to the PRACH configuration index.

4. The method of claim 2, wherein, The method further comprises: In each of the RO resources corresponding to the PRACH configuration index, a second dedicated RO resource is determined for a connected state UE, and a second random access mask index corresponding to the second dedicated RO resource is determined; wherein, there is a mapping relationship between each random access mask index and RO index; the second random access mask index is used to determine the second dedicated RO resource from each of the RO resources; The second random access mask index is sent to the connected state UE.

5. The method of claim 3 or 4, wherein, In the case where the number of RO resources in each beam position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index comprises: The random access mask index is equal to the value obtained by taking the RO index modulo operation and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

6. The method of claim 3 or 4, wherein, In the case where the number of RO resources in each beam position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index comprises: In the case where the random access mask index is equal to 11, the RO index comprises 9 to 12; in the case where the random access mask index is equal to 12, the RO index comprises 13 to 16.

7. The method according to any one of claims 1 to 4, wherein The random access configuration information further comprises a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate the residence time of each beam position; The frequency domain multiplexing degree, the beam hopping pattern, and the number of ROs in the time domain indicated by the PRACH configuration index are used to determine the RO resource for initiating random access.

8. The method according to any one of claims 1 to 4, wherein The sending of the random access configuration information comprises: The random access configuration information is sent through a system message.

9. The method of claim 4, wherein, The sending of the second random access mask index to the connected state UE comprises: The second random access mask index is sent to the connected state UE through dedicated signaling.

10. A random access method, wherein, The method is applied to a user equipment (UE), and comprises: Receiving random access configuration information sent by a network device; the random access configuration information includes a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource in the residence time of each wave position; Determining a random access opportunity (RO) resource based on the random access configuration information; Initiating random access based on the RO resource.

11. The method of claim 10, wherein, Each of the RO resources is indexed and sorted according to the time falling within the residence time of each wave position.

12. The method of claim 11, wherein, The UE has a target characteristic combination; The random access configuration information further includes a first random access mask index; the first random access mask index is used to assign the UE with the target characteristic combination; there is a mapping relationship between each random access mask index and the RO index; The determining of the RO resource based on the random access configuration information includes: Determining a first dedicated RO resource from each RO resource corresponding to the PRACH configuration index based on the first random access mask index; The initiating of the random access based on the RO resource includes: Initiating the random access based on the first dedicated RO resource.

13. The method of claim 11, wherein, The UE does not have a target characteristic combination; The random access configuration information further includes a first random access mask index; the first random access mask index is used to assign the UE with the target characteristic combination; there is a mapping relationship between each random access mask index and the RO index; The determining of the RO resource based on the random access configuration information includes: Determining a target RO resource that can be currently used except for the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index based on the first random access mask index; The initiating of the random access based on the RO resource includes: Initiating the random access based on the target RO resource.

14. The method of claim 11, wherein, The method further includes: Receiving a second random access mask index sent by the network device in a connected state; there is a mapping relationship between each random access mask index and the RO index; The determining of the RO resource based on the random access configuration information includes: Determining a second dedicated RO resource dedicated to the UE from each RO resource corresponding to the PRACH configuration index based on the second random access mask index; The initiating of the random access based on the RO resource includes: Initiating the random access based on the second dedicated RO resource.

15. The method of any one of claims 12-14, wherein, In the case that the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and the RO index includes: The random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

16. The method of any one of claims 12-14, wherein, In the case that the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and the RO index includes: In the case that the random access mask index is equal to 11, the RO index includes 9 to 12; in the case that the random access mask index is equal to 12, the RO index includes 13 to 16.

17. The method of claim 10, wherein, The random access configuration information further comprises a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate a residence time of each beam position; The random access configuration information comprises a PRACH configuration index; the PRACH configuration index is used to indicate that there is at least one random access opportunity (RO) resource in a residence time of each beam position. The RO resource is determined based on the number of ROs in the time domain indicated by the PRACH configuration index, the frequency domain multiplexing degree, and the beam hopping pattern.

18. The method of claim 10, wherein, The random access configuration information comprises a PRACH configuration index; the PRACH configuration index is used to indicate that there is at least one random access opportunity (RO) resource in a residence time of each beam position. The PRACH configuration index is received by the network device through a system message.

19. The method of claim 14, wherein, The second random access mask index is received by the network device in a connected state. The second random access mask index is received by the network device in a connected state through dedicated signaling.

20. A random access device, wherein, The network device comprises a memory, a transceiver, and a processor. The memory is used to store a computer program; the transceiver is used to transceive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations: Beam hopping information is acquired. A PRACH configuration index is determined based on the beam hopping information; the PRACH configuration index is used to indicate that there is at least one RO resource in a residence time of each beam position. Random access configuration information is sent; the random access configuration information comprises the PRACH configuration index.

21. The apparatus of claim 20, wherein, Each RO resource is indexed and sorted according to time falling within the residence time of each beam position.

22. The apparatus of claim 21, wherein, The processor is further used to perform the following operations: The random access configuration information further comprises a first random access mask index. In each RO resource corresponding to the PRACH configuration index, a first dedicated RO resource is determined for a user equipment (UE) satisfying a target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined. Each random access mask index and RO index have a mapping relationship; the first random access mask index is used for the UE satisfying the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.

23. The apparatus of claim 21, wherein, The processor is further used to perform the following operations: In each RO resource corresponding to the PRACH configuration index, a second dedicated RO resource is determined for a connected state UE, and a second random access mask index corresponding to the second dedicated RO resource is determined; each random access mask index and RO index have a mapping relationship; and the second random access mask index is used to determine the second dedicated RO resource from each RO resource. The second random access mask index is sent to the connected state UE.

24. The apparatus of claim 22 or 23, wherein, In the case that the number of RO resources in each beam position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index comprises: The random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

25. The apparatus of claim 22 or 23, wherein, In the case that the number of RO resources in each beam position is greater than a preset maximum number, the mapping relationship between each random access mask index and RO index comprises: In a case that the random access mask index is equal to 11, the RO index includes 9 to 12; in a case that the random access mask index is equal to 12, the RO index includes 13 to 16.

26. The apparatus of any of claims 20-23, wherein, The random access configuration information further includes a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate a residence time of each beam position; The frequency domain multiplexing degree, the beam hopping pattern, and a number of ROs in a time domain indicated by the PRACH configuration index are used to determine the RO resource for initiating random access.

27. The apparatus of any of claims 20-23, wherein, The sending of the random access configuration information includes: The random access configuration information is sent through a system message.

28. The apparatus of claim 23, wherein, The sending of the second random access mask index to the connected state UE includes: The second random access mask index is sent to the connected state UE through dedicated signaling.

29. A random access device, wherein, A user equipment (UE) includes a memory, a transceiver, and a processor; The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: Receiving random access configuration information sent by a network device; the random access configuration information includes a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource in a residence time of each beam position; Determining a random access opportunity (RO) resource based on the random access configuration information; Initiating random access based on the RO resource.

30. The apparatus of claim 29, wherein, Each of the RO resources is indexed and sorted according to time falling within the residence time of each beam position.

31. The apparatus of claim 30, wherein, The UE has a target characteristic combination; The random access configuration information further includes a first random access mask index; the first random access mask index is used to assign to a UE having a target characteristic combination; and there is a mapping relationship between each random access mask index and an RO index; The determining of the RO resource based on the random access configuration information includes: Determining a first dedicated RO resource from each of the RO resources corresponding to the PRACH configuration index based on the first random access mask index; The initiating of random access based on the RO resource includes: Initiating random access based on the first dedicated RO resource.

32. The apparatus of claim 30, wherein, The UE does not have a target characteristic combination; The random access configuration information further includes a first random access mask index; the first random access mask index is used to assign to a UE having a target characteristic combination; and there is a mapping relationship between each random access mask index and an RO index; The determining of the RO resource based on the random access configuration information includes: Determining a target RO resource currently available except for a first dedicated RO resource from each of the RO resources corresponding to the PRACH configuration index based on the first random access mask index; The initiating of random access based on the RO resource includes: Initiating random access based on the target RO resource.

33. The apparatus of claim 30, wherein, The processor is further configured to perform: receive, in the connected state, a second random access mask index sent by the network device; there is a mapping relationship between each random access mask index and an RO index; determining, based on the random access configuration information, a random access opportunity RO resource, includes: determining, based on the second random access mask index, a second dedicated RO resource dedicated to the UE from each RO resource corresponding to the PRACH configuration index; initiating, based on the RO resource, random access, includes: initiating random access based on the second dedicated RO resource.

34. The apparatus of any of claims 31-33, wherein, In the case that the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and an RO index includes: The random access mask index is equal to the value obtained by performing a modulo operation on the RO index and adding 1, and the modulus of the modulo operation is equal to the preset maximum number.

35. The apparatus of any of claims 31-33, wherein, In the case that the number of RO resources in each wave position is greater than a preset maximum number, the mapping relationship between each random access mask index and an RO index includes: In the case that the random access mask index is equal to 11, the RO index includes 9 to 12; in the case that the random access mask index is equal to 12, the RO index includes 13 to 16.

36. The apparatus of claim 29, wherein, The random access configuration information further includes a frequency domain multiplexing degree and a beam hopping pattern; the beam hopping pattern is used to indicate the residence time of each wave position; determining, based on the random access configuration information, a random access opportunity RO resource, includes: determining an RO resource based on the number of ROs in the time domain of each subframe indicated by the PRACH configuration index, the frequency domain multiplexing degree, and the beam hopping pattern.

37. The apparatus of claim 29, wherein, The random access configuration information sent by the network device includes: The PRACH configuration index sent by the network device through system messages.

38. The apparatus of claim 33, wherein, receive, in the connected state, a second random access mask index sent by the network device, includes: receiving, in the connected state, a second random access mask index sent by the network device through dedicated signaling.

39. A random access apparatus, wherein, includes: an acquisition unit, configured to acquire beam hopping information; a first determination unit, configured to determine a physical random access channel PRACH configuration index based on the beam hopping information; the PRACH configuration index indicates that there is at least one random access opportunity RO resource in the residence time of each wave position; a sending unit, configured to send random access configuration information; the random access configuration information includes the PRACH configuration index.

40. A random access apparatus, comprising: includes: a receiving unit, configured to receive random access configuration information sent by a network device; The random access configuration information includes a physical random access channel PRACH configuration index; the PRACH configuration index indicates that there is at least one random access opportunity RO resource in the residence time of each wave position; a second determination unit, configured to determine a random access opportunity RO resource based on the random access configuration information; an access unit, configured to initiate random access based on the RO resource.

41. A processor-readable storage medium, wherein, The processor readable storage medium stores a program for causing the processor to execute the method of any one of claims 1 to 9, or the method of any one of claims 10 to 19.

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