Random access method, network equipment, terminal, device and storage medium

Abstract

The invention provides a random access method, network equipment, a terminal, a device and a storage medium, and the method comprises the steps that the network equipment determines a service beam position resource set corresponding to the terminal according to an access position area of the terminal, the service beam position resource set comprises a first service beam position resource which is not used and / or at least one second service beam position resource which is being used; and sending a random access response RAR message to the terminal, wherein the RAR message carries the time-frequency information of the service beam position resource set. By adopting the technical scheme provided by the invention, the terminal can search the service beam position resource which is being used for access, so that the utilization rate of the satellite beam resource is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of satellite communication, and in particular to a random access method, a network device, a terminal, an apparatus, and a storage medium. BACKGROUND

[0002] In a medium and low earth orbit satellite communication system in which signaling beams are deployed in a fixed beam pointing angle manner in a satellite body coordinate system, a base station allocates new traffic beam resources to a terminal (User Equipment, UE) and schedules a traffic beam to point to an access location area of the UE to ensure continuous communication services of the UE after detecting a MSG1 message of the UE and identifying the access location area of the UE by a signaling beam each time. For limited beam resources on a satellite, the resource utilization of this resource allocation manner is low. SUMMARY

[0003] The present application provides a random access method, a network device, a terminal, an apparatus, and a storage medium to improve the utilization of satellite beam resources.

[0004] In a first aspect, the present application provides a random access method applied to a network device, and the method comprises: determining a traffic beam resource set corresponding to the terminal according to an access location area of the terminal, wherein the traffic beam resource set comprises a first traffic beam resource that has not been used and / or at least one second traffic beam resource that is being used; sending a random access response (RAR) message to the terminal, wherein the RAR message carries time-frequency information of the traffic beam resource set.

[0005] In some embodiments, determining the traffic beam resource set corresponding to the terminal according to the access location area of the terminal comprises: determining the first traffic beam resource from the idle traffic beam resources in the case that there are idle traffic beam resources; and determining the second traffic beam resource according to the access location area of the terminal and the created traffic beams in the case that there are at least one created traffic beam.

[0006] In some embodiments, determining the second traffic beam resource according to the access location area of the terminal and the created traffic beams comprises: determining an evaluation quantity between a center position coordinate of the access location area of the terminal and a center position coordinate of each created traffic beam, wherein the evaluation quantity comprises a distance evaluation quantity or an angle evaluation quantity; selecting no more than a set number of created traffic beams in a descending order of the evaluation quantity from the created traffic beams with the evaluation quantity less than an evaluation quantity threshold. The selected created service beam resource used by the service beam is determined as the second service beam resource.

[0007] In some embodiments, the method further comprises: Within a set time period after sending the RAR message to the terminal, if no terminal accesses the first service beam resource, the first service beam resource is recovered.

[0008] In some embodiments, the RAR message further carries one or more of the following information: The RAR access information indicates that the time-frequency information carrying the first service beam resource in the RAR message, or the time-frequency information carrying the first service beam resource in the RAR message, or the time-frequency information carrying the first service beam resource and the second service beam resource in the RAR message is identified. The number of service beam resources is used to identify the number of service beam resources carried in the RAR message.

[0009] In some embodiments, the method further comprises: The terminal is sent with downlink control information (DCI) scrambled using random access radio network temporary identifier (RA-RNTI), and the DCI carries one or more of the following information: The RAR access information indicates that the time-frequency information carrying the first service beam resource in the RAR message, or the time-frequency information carrying the first service beam resource in the RAR message, or the time-frequency information carrying the first service beam resource and the second service beam resource in the RAR message is identified. The number of service beam resources is used to identify the number of service beam resources carried in the RAR message.

[0010] In a second aspect, the application also provides a random access method applied to a terminal, which comprises: Receiving the RAR message sent by the network device, the RAR message carrying the time-frequency information of the service beam resource set corresponding to the terminal, the service beam resource set including the first service beam resource not yet used and / or at least one second service beam resource being used; According to the time-frequency information of the service beam resource set, searching for the access service beam.

[0011] In some embodiments, according to the time-frequency information of the service beam resource set, searching for the access service beam comprises: In the case where the service beam resource set includes the second service beam resource, the time-frequency information of the second service beam resource is searched for the access service beam preferentially.

[0012] In some embodiments, the searching for the access service beam according to the time-frequency information of the second service beam resource comprises: According to the time-frequency information of each second service beam resource, the signal quality value of the service beam corresponding to each second service beam resource is measured, and the signal quality value comprises a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ); From the service beams whose signal quality values meet the cell selection criteria, the service beam with the highest signal quality value is selected as the access service beam.

[0013] In some embodiments, the RAR message further carries one or more of the following information: The RAR access information indicates that the time-frequency information of the first service beam resource is carried in the RAR message, or the time-frequency information of the first service beam resource is carried in the RAR message, or the time-frequency information of the first service beam resource and the second service beam resource is carried in the RAR message. The number of service beam resources is used to identify the number of service beam resources carried in the RAR message.

[0014] In some embodiments, the method further comprises: Receiving the DCI scrambled with the RA-RNTI sent by the network device, and the DCI carries one or more of the following information: The RAR access information indicates that the time-frequency information of the first service beam resource is carried in the RAR message, or the time-frequency information of the first service beam resource is carried in the RAR message, or the time-frequency information of the first service beam resource and the second service beam resource is carried in the RAR message. The number of service beam resources is used to identify the number of service beam resources carried in the RAR message.

[0015] In a third aspect, the present application also provides a network device comprising a memory, a transceiver, and a processor. The memory is used to store computer programs; the transceiver is used to transceive data under the control of the processor; and the processor is used to read the computer programs in the memory and perform the following operations: According to the access location area of the terminal, a service beam resource set corresponding to the terminal is determined, and the service beam resource set comprises a first service beam resource that has not been used and / or at least one second service beam resource that is being used; Sending a random access response (RAR) message to the terminal, and the RAR message carries the time-frequency information of the service beam resource set.

[0016] In some embodiments, the operation of determining the set of traffic beam resources corresponding to the terminal according to the access location area of the terminal comprises: In the case where there are idle traffic beam resources, determining the first traffic beam resource from the idle traffic beam resources; and, In the case where there are at least one created traffic beam, determining the second traffic beam resource according to the access location area of the terminal and the created traffic beam.

[0017] In some embodiments, the operation of determining the second traffic beam resource according to the access location area of the terminal and the created traffic beam comprises: determining an evaluation quantity between the center position coordinate of the access location area of the terminal and the center position coordinate of each created traffic beam, the evaluation quantity comprising a distance evaluation quantity or an angle evaluation quantity; selecting no more than a set number of created traffic beams in order of the evaluation quantity from small to large from the created traffic beams whose evaluation quantity is less than an evaluation quantity threshold; determining the traffic beam resource used by the selected created traffic beam as the second traffic beam resource.

[0018] In some embodiments, the operation further comprises: reclaiming the first traffic beam resource if there is no terminal accessing in the first traffic beam resource within a set time period after sending the RAR message to the terminal.

[0019] In some embodiments, the RAR message further carries one or more of the following information: RAR access information indication, the RAR access information indication being used to identify the time-frequency information carrying the first traffic beam resource in the RAR message, or being used to identify the time-frequency information carrying the first traffic beam resource in the RAR message, or being used to identify the time-frequency information carrying the first traffic beam resource and the second traffic beam resource in the RAR message; number of traffic beam resources, the number of traffic beam resources being used to identify the number of traffic beam resources carried in the RAR message.

[0020] In some embodiments, the operation further comprises: sending, to the terminal, a downlink control information (DCI) scrambled using a random access radio network temporary identifier (RA-RNTI), the DCI carrying one or more of the following information: RAR access information indication, the RAR access information indication being used to identify the time-frequency information carrying the first traffic beam resource in the RAR message, or being used to identify the time-frequency information carrying the first traffic beam resource in the RAR message, or being used to identify the time-frequency information carrying the first traffic beam resource and the second traffic beam resource in the RAR message; A number of service wave position resources, the number of service wave position resources being used to identify a number of service wave position resources carried in the RAR message.

[0021] In a fourth aspect, the present application also provides a terminal, comprising 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 an RAR message sent by a network device, the RAR message carrying time-frequency information of a service wave position resource set corresponding to the terminal, the service wave position resource set including a first service wave position resource not yet used and / or at least one second service wave position resource being used; searching for an access service beam according to the time-frequency information of the service wave position resource set.

[0022] In some embodiments, searching for the access service beam according to the time-frequency information of the service wave position resource set comprises: In the case where the service wave position resource set includes the second service wave position resource, preferentially searching for the access service beam according to the time-frequency information of the second service wave position resource.

[0023] In some embodiments, searching for the access service beam according to the time-frequency information of the second service wave position resource comprises: measuring a signal quality value of a service beam corresponding to each second service wave position resource according to the time-frequency information of each second service wave position resource, the signal quality value including a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ); selecting, from the service beams satisfying the cell selection criterion, a service beam with the highest signal quality value as the access service beam.

[0024] In some embodiments, the RAR message further carries one or more of the following information: an RAR access information indication, the RAR access information indication being used to identify that the RAR message carries the time-frequency information of the first service wave position resource, or being used to identify that the RAR message carries the time-frequency information of the first service wave position resource, or being used to identify that the RAR message carries the time-frequency information of the first service wave position resource and the second service wave position resource; a number of service wave position resources, the number of service wave position resources being used to identify a number of service wave position resources carried in the RAR message.

[0025] In some embodiments, the operations further comprise: receiving a DCI scrambled by the RA-RNTI sent by the network device, the DCI carrying one or more of the following information: The RAR access information indicates time-frequency information of the first service beam resource carried in the RAR message, or indicates time-frequency information of the first service beam resource carried in the RAR message, or indicates time-frequency information of the first service beam resource and the second service beam resource carried in the RAR message. The number of service beam resources indicates the number of service beam resources carried in the RAR message.

[0026] In a fifth aspect, the present application further provides a random access device applied to a network device, the device comprising: A determination unit is configured to determine a service beam resource set corresponding to the terminal according to an access location area of the terminal, the service beam resource set comprising a first service beam resource not yet used and / or at least one second service beam resource being used. A sending unit is configured to send a random access response (RAR) message to the terminal, the RAR message carrying time-frequency information of the service beam resource set.

[0027] In a sixth aspect, the present application further provides a random access device applied to a terminal, the device comprising: A receiving unit is configured to receive a RAR message sent by a network device, the RAR message carrying time-frequency information of a service beam resource set corresponding to the terminal, the service beam resource set comprising a first service beam resource not yet used and / or at least one second service beam resource being used. A searching unit is configured to search for an access service beam according to the time-frequency information of the service beam resource set.

[0028] In a seventh aspect, the present application further provides a non-transitory readable storage medium, the non-transitory readable storage medium storing a program, the program being used to make a processor execute the random access method of the first aspect or the random access method of the second aspect.

[0029] In an eighth aspect, the present application further provides a communication device, the communication device storing a program, the program being used to make the communication device execute the random access method of the first aspect or the random access method of the second aspect.

[0030] In a ninth aspect, the present application further provides a processor readable storage medium, the processor readable storage medium storing a program, the program being used to make a processor execute the random access method of the first aspect or the random access method of the second aspect.

[0031] In a tenth aspect, the application also provides a chip product, wherein a program is stored in the chip product, and the program is used for enabling the chip product to perform the random access method in the first aspect or the random access method in the second aspect.

[0032] The random access method, the network device, the terminal, the apparatus and the storage medium provided by the application can determine the service wave position resource set of the terminal according to the access position area of the terminal, the service wave position resource set includes the first service wave position resource which has not been used and / or the second service wave position resource which is being used, and the time-frequency information of the service wave position resource set is carried in the RAR message and sent to the UE, so that the terminal can search the service wave position resource which is being used for access, thereby improving the utilization rate of the satellite beam resource. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the application or the related art, the following will briefly introduce the drawings needed to be used in the embodiment or related art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0034] Figure 1 The UE accesses the signaling beam provided by the related art; Figure 2 The flowchart of the random access method provided by the embodiment of the application; Figure 3 The flowchart of the base station determining the second service wave position resource provided by the embodiment of the application; Figure 4 The random access flowchart provided by the embodiment of the application; Figure 5 The example scenario diagram provided by the embodiment of the application; Figure 6 The MAC RAR example diagram provided by the embodiment of the application; Figure 7 The MAC RAR example diagram provided by the embodiment of the application; Figure 8 The flowchart of the random access method provided by the embodiment of the application; Figure 9 The structural diagram of the network device provided by the embodiment of the application; Figure 10 The structural diagram of the terminal provided by the embodiment of the application; Figure 11 The structural diagram of the random access apparatus provided by the embodiment of the application; Figure 12 Structure diagram two of random access device provided by the embodiment of the application. DETAILED DESCRIPTION

[0035] The term "and / or" in the embodiments of the present application describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0036] The term "a plurality of" in the embodiments of the present application means two or more, and other quantifiers are similar.

[0037] The terms "first", "second", and the like in the embodiments of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second" are usually of the same type and do not limit the number of objects, for example, the first object can be one or more.

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0039] In order to more clearly understand the technical solutions of the embodiments of the present application, first, some technical contents related to the embodiments of the present application are introduced.

[0040] In a medium and low orbit satellite mobile communication system, because the satellite is moving relative to the ground and has a wide coverage, the beam and power resources on the satellite are limited, so it is not possible to provide communication services in all coverage areas of the cell as in the ground mobile communication system, and only communication services in part of the location area within the satellite coverage can be met at the same time.

[0041] In this application, the access beam used to monitor the satellite user communication demand is called a signaling beam, which can provide access services for users within the satellite coverage area. When the base station detects that the signaling beam has UE access, it will schedule the traffic beam to provide communication services for the location area where the UE is located. In this way, the communication demands of users in different location areas within the satellite coverage area are met. The beam width of the signaling beam and the traffic beam can be the same or different, but generally the beam width of the signaling beam is larger than that of the traffic beam, so the coverage of the signaling beam is usually larger than that of the traffic beam. The beam coverage of the satellite is called a beam position, where the coverage of the signaling beam is called a signaling beam position, and the coverage of the traffic beam is called a traffic beam position. The traffic beam serving the traffic beam position is called a traffic beam position resource.

[0042] The deployment of the signaling beam with a fixed beam pointing angle (i.e., the deployment of the NTN Earth Moving Cell) is that the satellite signaling beam pointing angle is fixed and unchanged, and the beam pointing spatial position coordinates change with the movement of the satellite. The deployment of the traffic beam with a fixed beam pointing position coordinate (i.e., the deployment of the NTN Earth Fixed Cell) is that the signaling beam pointing spatial position coordinate is fixed and unchanged, and the beam pointing angle will change with the movement of the satellite. The beam pointing angle in this application refers to the beam pointing angle in the satellite body coordinate system. NTN refers to Non-Terrestrial Network (NTN).

[0043] In related technologies, after the base station detects the MSG1 message of the UE through the signaling beam and identifies the access location area of the UE, the processing method of scheduling the traffic beam position resource usually includes: (1) When there are idle beam resources on the satellite, the base station schedules new traffic beam position resources according to the UE access location area and sends the MSG2 message (random access response message) to the UE. The MSG2 message only carries the information of a set of newly allocated traffic beam position resources, and the UE accesses the new scheduled traffic beam time-frequency resource to obtain satellite communication services.

[0044] (2) When there are insufficient idle beam resources on the satellite, the base station no longer sends the MSG2 message to the UE, and the random access process of the UE fails, so it cannot obtain satellite communication services.

[0045] Figure 1 The UE access diagram provided by related technologies through the signaling beam is shown in FIG. 1. Figure 1UE1, UE2, UE3 successively initiate random access through signaling beams, UE1, UE2, UE3 are in the same signaling beam position, and the steps of UE1, UE2, UE3 performing random access through signaling beams are as follows: Step 1, UE0 first initiates a random access process of a signaling beam, after the base station detects that UE0 accesses and obtains an access location area of UE0, the base station schedules a service beam resource 0 to provide communication services for UE0, and the service beam corresponding to UE0 is service beam 0.

[0046] Step 2, UE1 subsequently initiates a random access process of a signaling beam, after the base station detects that UE1 accesses and obtains an access location area 1 of UE1, the base station schedules a service beam resource 1 to provide communication services for UE1, and the service beam corresponding to UE1 is service beam 1.

[0047] Step 3, UE2 finally initiates a random access process of a signaling beam, after the base station detects that UE2 accesses and obtains an access location area 2 of UE2, because there are insufficient idle service beams on the satellite to schedule a service beam resource, UE2 fails to access through the signaling beam.

[0048] In step 2 described above, service beam resource 0 can theoretically serve UE0 and UE1 at the same time, but because of the resource scheduling manner of the related art, the base station needs to schedule a new service beam resource 1 for UE1, resulting in increased resource consumption. In step 3 described above, service beam resource 0 can theoretically serve UE0 and UE2 at the same time, but because of the resource scheduling manner of the related art, the base station needs to schedule a new service beam resource for UE2, and because of the scheduling of a new service beam resource 1 for UE1, there are insufficient idle service beams on the satellite to schedule a new service beam resource for UE2, resulting in the failure of UE2 to access.

[0049] As can be seen from the above example, with the resource scheduling manner of the related art, multiple UEs that access through signaling beams need to be allocated new service beam resources by the base station even if the actual geographical positions of the UEs are relatively concentrated, resulting in a large amount of consumption of service beam resources and low resource utilization. Especially when the access amount of UEs through signaling beams increases, a large amount of limited service beam resources on the satellite will be consumed, and when the service beam resources are exhausted, UEs will no longer be able to access through signaling beams.

[0050] In fact, some UEs are located in places that are not unserviceable by the service beam resources being used, and therefore the application proposes an optimization scheme for random access. The base station uses a best-effort approach and no longer carries only the information of a new set of service beam resources (it can also include the service beam resources being used) in the random access response (RAR) message, so that the terminal can search for the service beam resources being used for access, thereby improving the utilization rate of satellite beam resources.

[0051] Figure 2 One of the flowcharts of the random access method provided by the embodiments of the application is applied to a network device, such as a base station. Figure 2 As shown in the figure, the method includes the following steps 201 and 202.

[0052] Step 201: According to the access location area of the terminal, determine the service beam resource set corresponding to the terminal, which includes the first service beam resource that has not been used and / or at least one second service beam resource that is being used.

[0053] Specifically, the network device in the application refers to a network device in a satellite mobile communication system, for example, a base station in a satellite mobile communication system.

[0054] In the embodiments of the application, after the network device detects the MSG1 message (message 1 containing a random access preamble) sent by the UE on the signaling beam and identifies the access location area of the signaling beam where the UE is located, the network device can determine the service beam resource set corresponding to the UE according to the access location area of the UE (which can be determined through the mapping relationship between the random access preamble in the MSG1 message and the access location area). The service beam resource set can include the first service beam resource that has not been used and / or at least one second service beam resource that is being used.

[0055] The first service beam resource that has not been used refers to the new service beam resource allocated for the UE, and the fact that it has not been used means that there is no terminal accessing in the service beam resource. The second service beam resource that is being used refers to the service beam resource used by the created service beam. In some embodiments, the second service beam resource included in the service beam resource set can be the service beam resource used by the created service beam that is close to the UE access location area and has an overlapping coverage area.

[0056] Step 202: Send a random access response (RAR) message to the terminal, and the RAR message carries the time-frequency information of the service beam resource set.

[0057] Specifically, after determining the service beam resource set corresponding to the UE, the network device can carry the time-frequency information of the service beam resource set in the RAR message and send it to the UE. After receiving the RAR message, the UE can search for the access service beam according to the time-frequency information of the service beam resource set, and the access service beam is the service beam used for the UE to perform communication service data transmission. Since the information of a new set of service beam resources is no longer carried in the RAR message, the terminal can search for the service beam resource being used for access, thereby improving the utilization rate of satellite beam resources.

[0058] In some embodiments, the time-frequency information of the service beam resource can include physical cell identity (PCI), frequency, time domain pattern, and the like.

[0059] For example, the value range of the PCI can be 0-1007, which is represented by 10 bits. The frequency information can be the absolute number of the radio frequency channel ARFCN-ValueNR, where ARFCN refers to the absolute radio frequency channel number (ARFCN), and NR refers to new radio (NR). The value range of ARFCN-ValueNR can be 0-3279165, which is represented by 22 bits. The time domain pattern can be represented by 16 bits.

[0060] In some embodiments, a service beam resource list (Service Beam Resouce List) can be added in the RAR message, which contains the time-frequency information of the service beam resource set.

[0061] For example, if the service beam resource set only includes the first service beam resource, the Service Beam Resouce List contains the time-frequency information of only one service beam resource, i.e., the time-frequency information of the first service beam resource. If the service beam resource set only includes the second service beam resource, the Service Beam Resouce List contains the time-frequency information of at least one service beam resource, i.e., the time-frequency information of the second service beam resource. If the service beam resource set includes the first service beam resource and the second service beam resource, the Service Beam Resouce List contains the time-frequency information of at least two service beam resources, where the first service beam resource can be taken as the first service beam resource in the list, and the other service beam resources are the second service beam resources.

[0062] The random access method provided by the embodiments of the present application comprises the following steps: determining, by a network device, a service beam resource set of a terminal according to an access location area of the terminal, wherein the service beam resource set comprises a first service beam resource which has not been used and / or at least one second service beam resource which is being used, and carrying time-frequency information of the service beam resource set in a RAR message and sending the RAR message to the UE, so that the terminal can search for the service beam resource which is being used for access, thereby improving the utilization rate of satellite beam resources.

[0063] In some embodiments, the service beam resource set corresponding to the terminal is determined according to the access location area of the terminal, comprising: In the case where there is an idle service beam resource, the first service beam resource is determined from the idle service beam resource; and In the case where there is at least one created service beam, the second service beam resource is determined according to the access location area of the terminal and the created service beam.

[0064] Specifically, when the network device determines the service beam resource set corresponding to the UE, if there is an idle service beam resource in the current satellite, a service beam resource can be selected from the idle service beam resource as the first service beam resource, and the selection manner can be random selection or selection of the service beam resource with the highest priority according to the resource priority.

[0065] If there is at least one created service beam in the current satellite, the second service beam resource can be determined according to the access location area of the UE and the created service beam. For example, a service beam resource used by a created service beam which is close to the access location area of the UE and has an overlapping coverage area can be selected as the second service beam resource.

[0066] It should be noted that if there is an idle service beam resource in the current satellite and there is at least one created service beam in the current satellite, the service beam resource set corresponding to the UE can comprise the first service beam resource and the second service beam resource.

[0067] In some embodiments, the second service beam resource is determined according to the access location area of the terminal and the created service beam, comprising: determining an evaluation quantity between the center position coordinates of the access location area of the terminal and the center position coordinates of each created service beam, wherein the evaluation quantity comprises a distance evaluation quantity or an angle evaluation quantity; selecting no more than a set number of created service beams in the order of the evaluation quantity from small to large from the created service beams with the evaluation quantity less than an evaluation quantity threshold; determining the service beam resource used by the selected created service beam as the second service beam resource.

[0068] Specifically, the distance evaluation quantity can be the distance between two coordinates, and the angle evaluation quantity can be the included angle between the two coordinates and the line connecting the two coordinates.

[0069] When determining the second service wave position resource, the network device can first calculate the evaluation quantity between the center position coordinates of the access location area of the UE and the center position coordinates of each created service wave position. For example, for each created service wave position, a corresponding distance evaluation quantity between the center position coordinates of the access location area of the UE and the center position coordinates of the created service wave position can be calculated.

[0070] Then, the network device can filter out the created service wave positions with a corresponding evaluation quantity less than the evaluation quantity threshold (for example, the distance threshold) according to the set evaluation quantity threshold, and select no more than a set number of created service wave positions in the order of the evaluation quantity from small to large, to determine the service wave position resources used by the selected created service wave positions as the second service wave position resource. For example, if the created service wave positions with an evaluation quantity less than the evaluation quantity threshold are no more than the set number, all the created service wave positions with an evaluation quantity less than the evaluation quantity threshold are selected; if the created service wave positions with an evaluation quantity less than the evaluation quantity threshold are more than the set number, the created service wave positions with an evaluation quantity less than the evaluation quantity threshold can be sorted in the order of the evaluation quantity from small to large, and the set number of created service wave positions are selected from front to back.

[0071] The set number can be N max or N max -1, N max Nmax. N max If the first service wave position resource is carried in the RAR message, the set number can be N max -1.

[0072] Figure 3 A flowchart for determining the second service wave position resource by the base station provided in the embodiments of the present application is shown in FIG. 1, which mainly includes the following steps: Figure 3 Step 1, calculating the evaluation quantity between the center position coordinates of the access location area of the UE and the center position coordinates of the created service wave position i . ​​

[0073] Step 2, screening out the created service beam positions satisfying the decision condition from all the created service beam positions on the satellite , wherein, X is the evaluation quantity threshold. If the distance evaluation quantity is adopted, X is the distance threshold. If the angle evaluation quantity is adopted, X is the included angle threshold.

[0074] Step 3, prioritizing the screened created service beam positions in the order from small to large according to the evaluation quantity .

[0075] Step 4, selecting, in the order of the prioritization, no more than N max or N max -1 created service beam position, and determining the service beam position resources used by the selected created service beam positions as the second service beam position resources.

[0076] In some embodiments, the method further includes: reclaiming the first service beam position resources within a set time duration after sending the RAR message to the terminal, if there is no terminal access in the first service beam position resources.

[0077] Specifically, in order to further improve the utilization rate of the limited beam resources on the satellite, the network device can monitor the UE access situation in the first service beam position resources after sending the RAR message to the UE. If there is no UE access in the first service beam position resources within a set time duration after sending the RAR message to the UE, the network device can reclaim the first service beam position resources in time.

[0078] Figure 4 The random access flowchart provided by the embodiments of the present application is shown in FIG. 1, when the user needs satellite service communication service, the user can initiate a two-step random access process through a signaling beam, the main steps of which include: Figure 4 Step 1, the UE completes downlink synchronization and system message reading. Step 2, the UE sends a MSG1 message to the base station according to the access location area of the signaling beam position it is in, the MSG1 message contains a random access preamble (PRACH Preamble), and PRACH refers to a physical random access channel (Physical Random Access Channel, PRACH).

[0079]

[0080] ​​Step 3, the base station detects the MSG1 message sent by the UE on the signaling beam, and identifies the access location area of the signaling beam where the UE is located. Then the base station triggers the allocation of the service beam resource, and schedules the service beam to point to the access location area.

[0081] In this step, the base station needs to schedule a new service beam resource as the first service beam resource according to the idle beam resource on the satellite, and determine the second service beam resource according to the created service beam in the satellite. For example, if there is an idle beam resource on the satellite, a service beam resource is selected from these idle beam resources as the first service beam resource according to the resource priority; if there is a created service beam in the satellite, the created service beam that is closer to the UE access location area and has an overlapping coverage area is selected, and the service beam resource used by the created service beam is used as the second service beam resource.

[0082] In some embodiments, the base station can fill the related bits in the DCI 1_0 format scrambled by the RA-RNTI CRC according to the determination of the first service beam resource and the second service beam resource, and generate the MAC RAR. RA refers to random access (RA), RNTI refers to radio network temporary identity (RNTI), DCI refers to downlink control information (DCI), and MAC refers to media access control (MAC).

[0083] Step 4, the base station sends the MSG2 message (i.e. the RAR message) to the UE, and the MSG2 message carries the time-frequency information of the service beam resource set corresponding to the UE. Specifically, the MAC RAR carries the time-frequency information of the service beam resource set corresponding to the UE.

[0084] In some embodiments, if the base station allocates a new service beam resource in the signaling beam random access process, the service beam resource can be recycled in a set time period after sending the MSG2 message if there is no UE access in the service beam resource.

[0085] Step 5, after the UE receives the MSG2 message, the UE searches for the access service beam according to the time-frequency information of the service beam resource carried by the MSG2 message.

[0086] The principle of searching for the access service beam can be: first searching according to the time-frequency information of the second service beam resource, and secondly selecting the first service beam resource. The specific processing is as follows: If the second service wave resource exists, the search is preferentially performed according to the time-frequency information of the second service wave resource. The UE filters out the service beams whose RSRP and / or RSRQ meet the cell selection criteria from the service beams corresponding to the second service wave resource, and selects the service beam with the optimal RSRP and / or RSRQ from the service beams to access.

[0087] If there is no service beam whose RSRP and / or RSRQ meet the cell selection criteria in the service beams corresponding to the second service wave resource, or the time-frequency information of only the first service wave resource is carried in the RAR message, the first service wave resource is selected for access.

[0088] The following is illustrated by a specific scenario as shown in the following. Figure 5 The example scenario provided for the embodiments of the present application is shown in FIG. 1. Figure 5 As shown in FIG. 1, the intra- satellite has allocated corresponding service wave resources for a plurality of service waves. The service wave resource 0 serves the service wave A, the service wave resource 1 serves the service wave B, the service wave resource 2 serves the service wave C, and the service wave resource 3 serves the service wave D. Figure 5 The UE initiates a random access process through a signaling beam in the access location area of the signaling wave in which it is located. After detecting the MSG1 message, the base station schedules a new service wave resource 4 and searches for the service wave resource 2 and the service wave resource 3 corresponding to the service wave C and the service wave D that are relatively close to the access location area of the UE and have coverage overlap. The base station takes the new service wave resource 4 as the first service wave resource, takes the service wave resource 2 and the service wave resource 3 as the second service wave resource, generates a MAC RAR according to the time-frequency information of the first service wave resource and the second service wave resource, and finally sends it to the UE through the MSG2 message.

[0089] The UE preferentially selects the time-frequency information of the second service wave resource to search for the access service beam. Assuming that the UE is in the coverage area of the service wave C, the service wave resource 2 can meet the UE's residence requirements, and the UE will access and perform communication service data transmission from the service wave resource 2.

[0090] After the base station sends the MSG2 message for a certain time, the service wave resource 4 is recycled.

[0091]

[0092] ​In some embodiments, the following one or more information is also carried in the RAR message: The RAR access information indicates the time-frequency information for identifying the first service beam resource carried in the RAR message, or the time-frequency information for identifying the first service beam resource and the second service beam resource carried in the RAR message. The number of service beam resources indicates the number of service beam resources carried in the RAR message.

[0093] Specifically, in addition to carrying the time-frequency information of the service beam resource set corresponding to the UE in the RAR message, the network device can also carry the RAR access information indication, the number of service beam resources, and other information in the RAR message, so that the UE can more quickly and accurately understand the service beam resource.

[0094] In some embodiments, a field RAR Access Information Ind can be added in the RAR message as the RAR access information indication. For example, the field is 2 bits, 00 represents the time-frequency information of the first service beam resource carried in the RAR message, 01 represents the time-frequency information of the first service beam resource and the second service beam resource carried in the RAR message, and 10 represents the time-frequency information of the second service beam resource carried in the RAR message. It should be noted that this is only an example, and the meanings represented by different bit values of the field can be set according to needs, and the present application does not make any limitation.

[0095] In some embodiments, a field Service Beam Resouce Number can be added in the RAR message to indicate the number of service beam resources carried in the RAR message. For example, the field is n bits, and then the RAR message can fill in at most N max =2 n service beam resources.

[0096] Figure 6 One of the MAC RAR example diagrams provided by the embodiments of the present application is as follows: Figure 6As shown, 1 byte can be extended in the RAR message (specifically, the MAC RAR) for adding the RAR Access Information Ind field and the Service Beam Resouce Number field, wherein 2 bits are used for adding the RAR Access Information Ind field, and 6 bits are used for adding the Service Beam Resouce Number field. Moreover, 6N bytes are extended in the RAR message (specifically, the MAC RAR) for adding the service beam resource list Service Beam Resouce List, N being the number of service beam resources in the list, i.e., the number of service beam resources identified by the Service Beam Resouce Number field. It should be noted that the length of the time-frequency information of each service beam resource can be planned as needed. Figure 6 The 6 bytes in the above are only examples.

[0097] In some embodiments, the method further includes: sending, to the terminal, a downlink control information (DCI) scrambled using a random access radio network temporary identifier (RA-RNTI), the DCI carrying one or more of the following information: a RAR access information indication, the RAR access information indication being used to identify that the time-frequency information of the first service beam resource is carried in the RAR message, or being used to identify that the time-frequency information of the first service beam resource is carried in the RAR message, or being used to identify that the time-frequency information of the first service beam resource and the second service beam resource is carried in the RAR message; a number of service beam resources, the number of service beam resources being used to identify the number of service beam resources carried in the RAR message.

[0098] Specifically, the RAR access information indication, the number of service beam resources, and the like can be carried in the DCI corresponding to the RAR message in addition to being carried in the RAR message, the DCI referring to the DCI (specifically, the DCI 1_0 with the CRC scrambled by the RA-RNTI) scrambled using the RA-RNTI and sent before the RAR message, the UE obtaining the content of the RAR message by knowing the time-frequency resource of the RAR message transmission through the DCI.

[0099] In some embodiments, the above-mentioned DCI can be extended to add a field RAR Access Information Ind as RAR access information indication. For example, the field is 2 bits, 00 represents that the time-frequency information of the first service beam resource is carried in the RAR message, 01 represents that the time-frequency information of the first service beam resource and the second service beam resource is carried in the RAR message, and 10 represents that the time-frequency information of the second service beam resource is carried in the RAR message. It should be noted that this is only an example, and the meanings represented by different bit values of the field can be set as needed, and the present application does not make any limitation.

[0100] In some embodiments, the above-mentioned DCI can be extended to add a field Service Beam Resouce Number to identify the number of service beam resources carried in the RAR message. For example, the field is n bits, and then the RAR message can fill in at most N max =2 n service beam resources.

[0101] Figure 7 The second example of the MAC RAR provided by the embodiments of the present application is that 1 byte is extended in the DCI 1_0 format whose CRC is scrambled by the RA-RNTI to add the RAR Access Information Ind field and the Service Beam Resouce Number field, wherein 2 bits are used to add the RAR Access Information Ind field and 6 bits are used to add the Service Beam Resouce Number field. 6N bytes are extended in the RAR message (specifically, the MAC RAR) to add the service beam resource list Service Beam Resouce List, and N is the number of service beam resources in the list, that is, the number of service beam resources identified by the Service Beam Resouce Number field. It should be noted that the length of the time-frequency information of each service beam resource can be planned as needed, Figure 7 The 6 bytes in the above-mentioned DCI are only examples.

[0102] Figure 8 The second flowchart of the random access method provided by the embodiments of the present application is applied to a terminal, as shown in Figure 8 The method comprises the following steps 801 and 802.

[0103] Step 801, receiving a RAR message sent by a network device, the RAR message carrying time-frequency information of a service wave position resource set corresponding to a terminal, the service wave position resource set including a first service wave position resource not yet used and / or at least one second service wave position resource being used.

[0104] Step 802, searching for an access service beam according to the time-frequency information of the service wave position resource set.

[0105] Specifically, in the embodiments of the present application, after the network device detects the MSG1 message (message 1 containing a random access preamble) sent by the UE on the signaling beam and identifies the access location area of the signaling wave position of the UE, the network device can determine the service wave position resource set corresponding to the UE according to the access location area of the UE (which can be determined through the mapping relationship between the random access preamble in the MSG1 message and the access location area). The service wave position resource set can include the first service wave position resource not yet used and / or the at least one second service wave position resource being used.

[0106] The first service wave position resource not yet used refers to a new service wave position resource allocated for the UE, and not yet used means that there is no terminal accessing in the service wave position resource. The second service wave position resource being used refers to the service wave position resource used by the created service wave position. In some embodiments, the second service wave position resource included in the service wave position resource set can be the service wave position resource used by the created service wave position which is close to the access location area of the UE and has an overlapping coverage area.

[0107] After the network device determines the service wave position resource set corresponding to the UE, the network device can carry the time-frequency information of the service wave position resource set in the RAR message and send it to the UE. After receiving the RAR message, the UE can search for an access service beam according to the time-frequency information of the service wave position resource set. The access service beam is the service beam used for the UE to perform communication service data transmission. Since the information carried in the RAR message is no longer only a new service wave position resource, the terminal can search for the service wave position resource being used for access, thereby improving the utilization rate of satellite beam resources.

[0108] In some embodiments, searching for an access service beam according to the time-frequency information of the service wave position resource set includes: In the case where the service wave position resource set includes the second service wave position resource, the access service beam is searched according to the time-frequency information of the second service wave position resource preferentially.

[0109] Specifically, after receiving the RAR message, if it is determined that the time-frequency information of the second service beam resource is carried in the RAR message, the UE can preferentially search for the access service beam according to the time-frequency information of the second service beam resource, so as to try to use the currently used service beam resource for access, and try to avoid using a new service beam resource, thereby reducing unnecessary consumption of the service beam resource, and further improving the utilization rate of the satellite beam resource.

[0110] In some embodiments, searching for the access service beam according to the time-frequency information of the second service beam resource comprises: According to the time-frequency information of each second service beam resource, the signal quality value of the service beam corresponding to each second service beam resource is measured, and the signal quality value comprises a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ); From the service beams whose signal quality values satisfy the cell selection criterion, the service beam with the highest signal quality value is selected as the access service beam.

[0111] Specifically, the UE can perform measurement on the corresponding service beam according to the time-frequency information of each second service beam resource, to obtain the signal quality value of the service beam corresponding to each second service beam resource, which can be RSRP and / or RSRQ. Then, from the service beams corresponding to the second service beam resources, the service beams whose signal quality values satisfy the cell selection criterion are screened out, and the service beam with the highest signal quality value is selected from these service beams for access, so as to ensure the service quality of satellite communication.

[0112] The cell selection criterion can be a cell selection criterion defined in an existing communication standard protocol, for example, an S criterion for cell selection. The S criterion for cell selection refers to a series of conditions that need to be met when the UE selects to reside in a cell in a mobile communication network. The core of the S criterion is to evaluate the received level value (Srxlev) and the received quality value (Squal) of the cell. The specific condition is Srxlev>0 and Squal>0, to ensure that the signal strength of the selected cell is sufficient to meet the communication demand. The specific calculation formula of Srxlev and Squal can be referred to in the relevant communication standard protocol, and will not be described here.

[0113] In some embodiments, the RAR message further carries one or more of the following information: The RAR access information indicates that the time-frequency information of the first service beam resource is carried in the RAR message, or that the time-frequency information of the first service beam resource is carried in the RAR message, or that the time-frequency information of the first service beam resource and the second service beam resource is carried in the RAR message; a service beam resource number, the service beam resource number is used for identifying the number of service beam resources carried in the RAR message.

[0114] Specifically, in addition to carrying the time-frequency information of the service beam resource set corresponding to the UE in the RAR message, the network device can also carry the RAR access information indication, the service beam resource number and other information in the RAR message, so that the UE can more quickly and accurately understand the service beam resource situation.

[0115] In some embodiments, a field RAR Access Information Ind can be added in the RAR message as the RAR access information indication. For example, the field is 2 bits, 00 represents that the time-frequency information of the first service beam resource is carried in the RAR message, 01 represents that the time-frequency information of the first service beam resource and the second service beam resource is carried in the RAR message, and 10 represents that the time-frequency information of the second service beam resource is carried in the RAR message. It should be noted that this is only an example, and the meanings represented by different bit values of the field can be set as needed, and the present application does not make any limitation.

[0116] In some embodiments, a field Service Beam Resouce Number can be added in the RAR message to identify the number of service beam resources carried in the RAR message. For example, the field is n bits, and then the RAR message can fill in at most N max =2 n service beam resources.

[0117] In some embodiments, the method further comprises: receiving the DCI scrambled by the RA-RNTI sent by the network device, the DCI carrying one or more of the following information: a RAR access information indication, the RAR access information indication being used for identifying the time-frequency information of the first service beam resource carried in the RAR message, or being used for identifying the time-frequency information of the first service beam resource carried in the RAR message, or being used for identifying the time-frequency information of the first service beam resource and the second service beam resource carried in the RAR message; a service beam resource number, the service beam resource number being used for identifying the number of service beam resources carried in the RAR message.

[0118] Specifically, the RAR access information indication, the number of service beam resources and the like can be carried in the DCI corresponding to the RAR message in addition to being carried in the RAR message. The DCI refers to the DCI scrambled by the RA-RNTI (specifically, the DCI 1_0 scrambled by the CRC of the RA-RNTI) sent before the RAR message. The UE obtains the time-frequency resources of the RAR message transmission through the DCI, thereby parsing the content of the RAR message.

[0119] In some embodiments, the field RAR Access Information Ind can be added in the DCI to indicate the RAR access information. For example, the field is 2 bits, 00 represents that the time-frequency information of the first service beam resource is carried in the RAR message, 01 represents that the time-frequency information of the first service beam resource and the second service beam resource is carried in the RAR message, and 10 represents that the time-frequency information of the second service beam resource is carried in the RAR message. It should be noted that this is only an example, and the meanings represented by different bit values of the field can be set as needed, and the present application does not limit this.

[0120] In some embodiments, the field Service Beam Resouce Number can be added in the DCI to indicate the number of service beam resources carried in the RAR message. For example, the field is n bits, and the RAR message carries the time-frequency information of at most N max =2 n service beam resources.

[0121] The methods provided by the embodiments of the present application are based on the same technical concept, and the implementation of each method can be referred to each other, and the repeated parts will not be described.

[0122] Figure 9 The structure diagram of the network device provided by the embodiments of the present application is shown in FIG. 9. The network device includes a memory 920, a transceiver 910 and a processor 900. The processor 900 and the memory 920 can also be arranged physically separately. Figure 9 The memory 920 is used to store a computer program, and the transceiver 910 is used to transceive data under the control of the processor 900.

[0123] The processor 900 is configured to perform the method provided by the embodiments of the present application.

[0124] Figure 9 ​In particular embodiments, the bus architecture can include any number of interconnecting buses and bridges, depending on the specific application of the processor 900 and the overall design constraints. The bus architecture can link together various circuits such as the processor 900, represented generally by one or more processors, the memory 920 represented generally by the various circuits of the memory, and various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and will not be described in further detail herein. The bus interface provides an interface to the transceiver 910, which can be a number of elements, including a transmitter that can be used to transmit signals using a transmission protocol (e.g., IEEE 802.11, code division multiple access, time division multiple access, and / or the like), a receiver that can be used to receive signals using a transmission protocol, processor(s), memory, and / or the like. The transceiver 910 can provide a communication interface to various other apparatuses over a transmission medium, including a wireless channel, a wired channel, and / or the like.

[0125] The processor 900 is responsible for managing the bus architecture and general processing, including the execution of software programs stored in the memory 920.

[0126] The processor 900 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also be a multi-core processor.

[0127] The processor 900 can be configured to perform any of the methods provided by embodiments of the present application by executing computer program instructions stored in the memory 920. According to the access location area of the terminal, determine a service wave position resource set corresponding to the terminal, the service wave position resource set including a first service wave position resource not yet used and / or at least one second service wave position resource being used; Send a random access response (RAR) message to the terminal, the RAR message carrying time-frequency information of the service wave position resource set.

[0128] In some embodiments, according to the access location area of the terminal, determining the service wave position resource set corresponding to the terminal includes: In the case where there is an idle service wave position resource, determining the first service wave position resource from the idle service wave position resource; and, In the case where there is at least one created service wave position, according to the access location area of the terminal and the created service wave position, determining the second service wave position resource.

[0129] In some embodiments, according to the access location area of the terminal and the created service wave position, determining the second service wave position resource includes: Determine the evaluation quantity between the center position coordinates of the terminal's access location area and the center position coordinates of each created service waveform. The evaluation quantity includes distance evaluation quantity or angle evaluation quantity. From the created business segments whose evaluation value is less than the evaluation value threshold, select no more than a set number of created business segments in ascending order of evaluation value; The service waveform resource used by the selected created service waveform is designated as the second service waveform resource.

[0130] In some embodiments, the method further includes: If no terminal accesses the first service bandwidth within a set time period after sending the RAR message to the terminal, the first service bandwidth will be reclaimed.

[0131] In some embodiments, the RAR message also carries one or more of the following information: RAR access information indication, the RAR access information indication is used to identify the time and frequency information of the first service wavelength resources carried in the RAR message, or to identify the time and frequency information of the first service wavelength resources carried in the RAR message, or to identify the time and frequency information of the first service wavelength resources and the second service wavelength resources carried in the RAR message. The number of service waveform resources is used to identify the number of service waveform resources carried in the RAR message.

[0132] In some embodiments, the method further includes: Sends downlink control information (DCI) scrambled with the random access radio network temporary identifier (RA-RNTI) to the terminal. The DCI carries one or more of the following information: RAR access information indication, the RAR access information indication is used to identify the time and frequency information of the first service wavelength resources carried in the RAR message, or to identify the time and frequency information of the first service wavelength resources carried in the RAR message, or to identify the time and frequency information of the first service wavelength resources and the second service wavelength resources carried in the RAR message. The number of service waveform resources is used to identify the number of service waveform resources carried in the RAR message.

[0133] Figure 10 This is a schematic diagram of the terminal structure provided in the embodiments of this application, such as... Figure 10 As shown, the terminal includes a memory 1020, a transceiver 1010, and a processor 1000; wherein the processor 1000 and the memory 1020 can also be physically arranged separately.

[0134] The memory 1020 is used to store computer programs; the transceiver 1010 is used to send and receive data under the control of the processor 1000.

[0135] Among them, Figure 10 In this application, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1000 and memory represented by memory 1020 together. 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 therefore will not be further described herein. The bus interface provides an interface. The transceiver 1010 can be multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 1030 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0136] The processor 1000 is responsible for managing the bus architecture and general processing, while the memory 1020 can store the data used by the processor 1000 when performing operations.

[0137] The processor 1000 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0138] The processor 1000 executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in the memory 1020, including: Receive RAR messages sent by network devices. The RAR messages carry time and frequency information of the service bandwidth resource set corresponding to the terminal. The service bandwidth resource set includes an unused first service bandwidth resource and / or at least one used second service bandwidth resource. Search for and access service beams based on the time-frequency information of the service beam resource set.

[0139] In some embodiments, searching for access service beams based on the time-frequency information of the service beam resource set includes: When the service beam resources set includes the second service beam resources, the access service beams are searched and accessed based on the time and frequency information of the second service beam resources.

[0140] In some embodiments, searching for access service beams based on the time-frequency information of the second service beam resources includes: According to the time-frequency information of each second service wave position resource, a signal quality value of a service beam corresponding to each second service wave position resource is measured, and the signal quality value includes a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ); From the service beams whose signal quality values satisfy the cell selection criterion, a service beam with the highest signal quality value is selected as an access service beam.

[0141] In some embodiments, the RAR message also carries one or more of the following information: The RAR access information indicates that the time-frequency information of the first service wave position resource carried in the RAR message, or the time-frequency information of the first service wave position resource carried in the RAR message, or the time-frequency information of the first service wave position resource and the second service wave position resource carried in the RAR message is identified. The number of service wave position resources is used to identify the number of service wave position resources carried in the RAR message.

[0142] In some embodiments, the method further comprises: Receiving the DCI scrambled using the RA-RNTI sent by the network device, and the DCI carries one or more of the following information: The RAR access information indicates that the time-frequency information of the first service wave position resource carried in the RAR message, or the time-frequency information of the first service wave position resource carried in the RAR message, or the time-frequency information of the first service wave position resource and the second service wave position resource carried in the RAR message is identified. The number of service wave position resources is used to identify the number of service wave position resources carried in the RAR message.

[0143] It should be noted that the above network device and terminal provided by the embodiments of the present application can realize all the method steps realized by the corresponding method embodiments described above, and can achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0144] The random access device provided by the embodiments of the present application is described below. The random access device described below can be referred to each other corresponding to the random access method described above.

[0145] Figure 11 The structure diagram of the random access device provided by the embodiments of the present application is shown in one of the following. The device is applied to a network device, such as Figure 11 As shown in the figure, the device comprises: The determining unit 1110 is configured to determine a service wave position resource set corresponding to the terminal according to an access location area of the terminal, the service wave position resource set including a first service wave position resource that has not been used and / or at least one second service wave position resource that is being used. The sending unit 1120 is configured to send a random access response (RAR) message to the terminal, the RAR message carrying time-frequency information of the service wave position resource set.

[0146] In some embodiments, the determining of the service wave position resource set corresponding to the terminal according to the access location area of the terminal includes: In the case where there is an idle service wave position resource, determining the first service wave position resource from the idle service wave position resource; and, In the case where there is at least one created service wave position, determining the second service wave position resource according to the access location area of the terminal and the created service wave position.

[0147] In some embodiments, the determining of the second service wave position resource according to the access location area of the terminal and the created service wave position includes: determining an evaluation quantity between a center position coordinate of the access location area of the terminal and a center position coordinate of each created service wave position, the evaluation quantity including a distance evaluation quantity or an angle evaluation quantity; selecting, from the created service wave positions whose evaluation quantities are less than an evaluation quantity threshold, no more than a set number of created service wave positions in ascending order of the evaluation quantities; determining service wave position resources used by the selected created service wave positions as the second service wave position resource.

[0148] In some embodiments, the apparatus further includes: The recycling unit is configured to recycle the first service wave position resource if there is no terminal access in the first service wave position resource within a set time length after the sending of the RAR message to the terminal.

[0149] In some embodiments, the RAR message further carries one or more of the following information: RAR access information indication, the RAR access information indication being used to identify that the time-frequency information of the first service wave position resource is carried in the RAR message, or being used to identify that the time-frequency information of the first service wave position resource is carried in the RAR message, or being used to identify that the time-frequency information of the first service wave position resource and the second service wave position resource is carried in the RAR message; service wave position resource number, the service wave position resource number being used to identify a number of service wave position resources carried in the RAR message.

[0150] In some embodiments, the sending unit 1120 is further configured to: The terminal receives downlink control information (DCI) scrambled by a random access radio network temporary identifier (RA-RNTI), and the DCI carries one or more of the following pieces of information: The RAR access information indicates time-frequency information for identifying the first traffic beam resource carried in the RAR message, or time-frequency information for identifying the first traffic beam resource carried in the RAR message, or time-frequency information for identifying the first traffic beam resource and the second traffic beam resource carried in the RAR message. The number of traffic beam resources indicates the number of traffic beam resources carried in the RAR message.

[0151] Figure 12 The structure diagram of the random access device provided by the embodiments of the present application is shown in Figure 2. The device is applied to a terminal, and as shown in Figure 2, the device comprises: Figure 12 The receiving unit 1210 is configured to receive a RAR message sent by a network device, and the RAR message carries time-frequency information of a traffic beam resource set corresponding to the terminal, wherein the traffic beam resource set comprises a first traffic beam resource that has not been used and / or at least one second traffic beam resource that is being used. The searching unit 1220 is configured to search for an access traffic beam according to the time-frequency information of the traffic beam resource set.

[0152] In some embodiments, searching for an access traffic beam according to the time-frequency information of the traffic beam resource set comprises: In the case where the traffic beam resource set comprises the second traffic beam resource, the access traffic beam is searched according to the time-frequency information of the second traffic beam resource preferentially.

[0153] In some embodiments, searching for an access traffic beam according to the time-frequency information of the second traffic beam resource comprises: According to the time-frequency information of each second traffic beam resource, a signal quality value of a traffic beam corresponding to each second traffic beam resource is measured, and the signal quality value comprises a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ). From the traffic beams that satisfy the cell selection criteria in terms of the signal quality value, a traffic beam with the highest signal quality value is selected as the access traffic beam.

[0154] In some embodiments, the RAR message further carries one or more of the following pieces of information: The RAR access information indicates time-frequency information for identifying the first traffic beam resource carried in the RAR message, or time-frequency information for identifying the first traffic beam resource carried in the RAR message, or time-frequency information for identifying the first traffic beam resource and the second traffic beam resource carried in the RAR message.​ a number of service wave position resources, the number of service wave position resources being used for identifying a number of service wave position resources carried in the RAR message.

[0155] In some embodiments, the receiving unit 1210 is further configured to: receive the DCI scrambled with the RA-RNTI sent by the network device, the DCI carrying one or more of the following information: RAR access information indication, the RAR access information indication being used for identifying time-frequency information in which the first service wave position resource is carried in the RAR message, or being used for identifying time-frequency information in which the first service wave position resource is carried in the RAR message, or being used for identifying time-frequency information in which the first service wave position resource and the second service wave position resource are carried in the RAR message; a number of service wave position resources, the number of service wave position resources being used for identifying a number of service wave position resources carried in the RAR message.

[0156] It should be noted that the above random access apparatus provided by the embodiments of the present application can realize all the method steps achieved by the corresponding method embodiments, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0157] It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, another division mode can be used. In addition, each functional unit in each embodiment of the present application 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.

[0158] 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 application essentially or the part that contributes to the prior art or the whole 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 a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and various storage media that can store program codes.

[0159] In some embodiments, the embodiments of the present application further provide a processor-readable storage medium, which stores a program for causing a processor to perform the random access method provided by each method embodiment whose execution subject is a network device, or perform the random access method provided by each method embodiment whose execution subject is a terminal.

[0160] It should be noted that the processor-readable storage medium provided by the embodiments of the present application can realize all the method steps realized by the corresponding method embodiments and achieve the same technical effects, and thus the same parts and beneficial effects of the embodiments of the present application as the method embodiments will not be repeated in detail.

[0161] The processor-readable storage medium can be any available medium or data storage device that a processor can access, 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.

[0162] In some embodiments, the embodiments of the present application further provide a non-transitory readable storage medium, which stores a computer program for causing a processor to perform the random access method provided by each method embodiment whose execution subject is a network device, or perform the random access method provided by each method embodiment whose execution subject is a terminal.

[0163] The above non-transitory readable storage medium provided by the embodiments of the present application can realize all the method steps realized by the corresponding method embodiments and achieve the same technical effects, and thus the same parts and beneficial effects of the embodiments of the present application as the method embodiments will not be repeated in detail.

[0164] In some embodiments, the embodiments of the present application further provide a communication device, which stores a computer program for causing the communication device to perform the random access method provided by each method embodiment whose execution subject is a network device, or perform the random access method provided by each method embodiment whose execution subject is a terminal.

[0165] The above communication device provided by the embodiments of the present application can realize all the method steps realized by the corresponding method embodiments and achieve the same technical effects, and thus the same parts and beneficial effects of the embodiments of the present application as the method embodiments will not be repeated in detail.

[0166] In some embodiments, the chip product stores a computer program, and the computer program is configured to cause the chip product to perform the random access method provided by each method embodiment whose execution subject is a network device, or perform the random access method provided by each method embodiment whose execution subject is a terminal.

[0167] Specifically, the chip product provided by the embodiments of the present application can implement all the method steps of the corresponding method embodiments and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments are not described in detail here.

[0168] The technical solutions provided by the embodiments of the present application can be applied to various systems. For example, the applicable 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 Telecommunication System (UMTS), a Worldwide interoperability for Microwave Access (WiMAX) system, a 5G New Radio (NR) system and its evolved communication system, a 6G (sixth generation mobile communication technology) system, etc. The various systems can include terminal devices and network devices. The system can also include a core network part, such as an Evolved Packet Core (EPC), a 5G core network (5GC), a 6G core network, etc.

[0169] The terminal referred in embodiments of the present application can be a device providing voice and / or data connectivity to users, handheld devices with or without wireless connection capabilities, or other processing devices connected to a wireless modem, etc. In different systems, the terminal can also be called by different names, such as a user equipment (UE) in a 5G system. The wireless terminal can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal can be a mobile terminal, such as a mobile telephone (also known as a "cellular" phone) or a computer with a mobile termination that interfaces to a wireless modem, etc. The wireless terminal can be portable, pocket, hand-held, computer-embedded, or car-mounted, and can exchange language and / or data with a radio access network. For example, the wireless terminal can be a personal communication service (PCS) phone, a cordless phone, a session initiated protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. The wireless terminal 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, etc., which are not limited in embodiments of the present application.

[0170] The network device related to the embodiments of the present application can be a base station, which 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 and 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 application can be a base transceiver station (BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), or a base station (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) system, or a 5G base station (gNB) in a next generation system, or a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., which are not limited in the embodiments of the present application. 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.

[0171] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0172] The computer executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operations 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 Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0173] The computer executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operations 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 Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0174] The computer executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operations 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 Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0175] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A random access method, characterized in that, Applied to network devices, the method includes: Based on the access location area of ​​the terminal, determine the service bandwidth resource set corresponding to the terminal. The service bandwidth resource set includes an unused first service bandwidth resource and / or at least one used second service bandwidth resource. A Random Access Response (RAR) message is sent to the terminal, the RAR message carrying the time-frequency information of the service bandwidth resource set.

2. The random access method according to claim 1, characterized in that, The step of determining the service bandwidth resource set corresponding to the terminal based on the terminal's access location area includes: If idle service bandwidth resources exist, the first service bandwidth resource is determined from the idle service bandwidth resources; and... If at least one service waveform exists, the second service waveform resource is determined based on the access location area of ​​the terminal and the created service waveform.

3. The random access method according to claim 2, characterized in that, The step of determining the second service bandwidth resource based on the access location area of ​​the terminal and the created service bandwidth includes: Determine the evaluation quantity between the center position coordinates of the access location area of ​​the terminal and the center position coordinates of each of the created service wavelengths, wherein the evaluation quantity includes a distance evaluation quantity or an angle evaluation quantity; From the created business segments whose evaluation value is less than the evaluation value threshold, select no more than a set number of created business segments in ascending order of evaluation value; The service waveform resource used by the selected created service waveform is determined as the second service waveform resource.

4. The random access method according to claim 1, characterized in that, The method further includes: If no terminal accesses the first service bandwidth within a set time period after the RAR message is sent to the terminal, the first service bandwidth is reclaimed.

5. The random access method according to claim 1, characterized in that, The RAR message also carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

6. The random access method according to claim 1, characterized in that, The method further includes: Sending downlink control information (DCI) scrambled with the random access radio network temporary identifier (RA-RNTI) to the terminal, wherein the DCI carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

7. A random access method, characterized in that, Applied to a terminal, the method includes: The terminal receives a RAR message sent by a network device. The RAR message carries time-frequency information of the service bandwidth resource set corresponding to the terminal. The service bandwidth resource set includes an unused first service bandwidth resource and / or at least one used second service bandwidth resource. Based on the time-frequency information of the service beam resources set, search for and access service beams.

8. The random access method according to claim 7, characterized in that, The step of searching for and accessing service beams based on the time-frequency information of the service beam resource set includes: When the service beam resources set includes the second service beam resources, the access service beams are searched preferentially based on the time and frequency information of the second service beam resources.

9. The random access method according to claim 8, characterized in that, The step of searching for and accessing the service beam based on the time-frequency information of the second service beam position resource includes: Based on the time-frequency information of each of the second service waveband resources, the signal quality value of the service beam corresponding to each of the second service waveband resources is measured, and the signal quality value includes the reference signal received power RSRP and / or the reference signal received quality RSRQ. From the service beams whose signal quality values ​​meet the cell selection criteria, the service beam with the highest signal quality value is selected as the access service beam.

10. The random access method according to claim 7, characterized in that, The RAR message also carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

11. The random access method according to claim 7, characterized in that, The method further includes: Receive the DCI scrambled with RA-RNTI sent by the network device, wherein the DCI carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

12. A network device, characterized in that, Includes memory, transceiver, and processor; A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Based on the access location area of ​​the terminal, determine the service bandwidth resource set corresponding to the terminal. The service bandwidth resource set includes an unused first service bandwidth resource and / or at least one used second service bandwidth resource. A Random Access Response (RAR) message is sent to the terminal, the RAR message carrying the time-frequency information of the service bandwidth resource set.

13. The network device according to claim 12, characterized in that, The step of determining the service bandwidth resource set corresponding to the terminal based on the terminal's access location area includes: If idle service bandwidth resources exist, the first service bandwidth resource is determined from the idle service bandwidth resources; and... If at least one service waveform exists, the second service waveform resource is determined based on the access location area of ​​the terminal and the created service waveform.

14. The network device according to claim 13, characterized in that, The step of determining the second service bandwidth resource based on the access location area of ​​the terminal and the created service bandwidth includes: Determine the evaluation quantity between the center position coordinates of the access location area of ​​the terminal and the center position coordinates of each of the created service wavelengths, wherein the evaluation quantity includes a distance evaluation quantity or an angle evaluation quantity; From the created business segments whose evaluation value is less than the evaluation value threshold, select no more than a set number of created business segments in ascending order of evaluation value; The service waveform resource used by the selected created service waveform is determined as the second service waveform resource.

15. The network device according to claim 12, characterized in that, The operation also includes: If no terminal accesses the first service bandwidth within a set time period after the RAR message is sent to the terminal, the first service bandwidth is reclaimed.

16. The network device according to claim 12, characterized in that, The RAR message also carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

17. The network device according to claim 12, characterized in that, The operation also includes: Sending downlink control information (DCI) scrambled with the random access radio network temporary identifier (RA-RNTI) to the terminal, wherein the DCI carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

18. A terminal, characterized in that, Includes memory, transceiver, and processor; A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: The terminal receives a RAR message sent by a network device. The RAR message carries time-frequency information of the service bandwidth resource set corresponding to the terminal. The service bandwidth resource set includes an unused first service bandwidth resource and / or at least one used second service bandwidth resource. Based on the time-frequency information of the service beam resources set, search for and access service beams.

19. The terminal according to claim 18, characterized in that, The step of searching for and accessing service beams based on the time-frequency information of the service beam resource set includes: When the service beam resources set includes the second service beam resources, the access service beams are searched preferentially based on the time and frequency information of the second service beam resources.

20. The terminal according to claim 19, characterized in that, The step of searching for and accessing the service beam based on the time-frequency information of the second service beam position resource includes: Based on the time-frequency information of each of the second service waveband resources, the signal quality value of the service beam corresponding to each of the second service waveband resources is measured, and the signal quality value includes the reference signal received power RSRP and / or the reference signal received quality RSRQ. From the service beams whose signal quality values ​​meet the cell selection criteria, the service beam with the highest signal quality value is selected as the access service beam.

21. The terminal according to claim 18, characterized in that, The RAR message also carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

22. The terminal according to claim 18, characterized in that, The operation also includes: Receive the DCI scrambled with RA-RNTI sent by the network device, wherein the DCI carries one or more of the following information: RAR access information indication, wherein the RAR access information indication is used to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource carried in the RAR message, or to identify the time and frequency information of the first service wavelength resource and the second service wavelength resource carried in the RAR message; The number of service bandwidth resources is used to identify the number of service bandwidth resources carried in the RAR message.

23. A random access device, characterized in that, Applied to network devices, the device includes: The determining unit is configured to determine the service bandwidth resource set corresponding to the terminal based on the access location area of ​​the terminal, wherein the service bandwidth resource set includes an unused first service bandwidth resource and / or at least one used second service bandwidth resource; The sending unit is used to send a Random Access Response (RAR) message to the terminal, wherein the RAR message carries the time-frequency information of the service bandwidth resource set.

24. A random access device, characterized in that, Applied to a terminal, the device includes: The receiving unit is configured to receive a RAR message sent by a network device. The RAR message carries time-frequency information of the service bandwidth resource set corresponding to the terminal. The service bandwidth resource set includes an unused first service bandwidth resource and / or at least one used second service bandwidth resource. The search unit is used to search for access service beams based on the time-frequency information of the service beam resource set.

25. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a program for causing the processor to perform the method according to any one of claims 1 to 6, or the method according to any one of claims 7 to 11.

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