RU2815739C1 - Random access method and device and data medium - Google Patents

Abstract

FIELD: communication equipment.

SUBSTANCE: invention relates to a random access method, a random access device and a data medium. Method of random access includes receiving information on configuration of resources, used to configure resources in a given pool of random access resources corresponding to at least one network slice, determining a first random access resource based on slice information for the target network slice and resource configuration information and initiating random access based on the first random access resource. Target network slice is a network slice for UE random access initiation.

EFFECT: reduced possibility of conflict between user equipment (UE) using a certain slice service and other UE during random access and increasing the random access success probability of the UE, so that the UE can quickly perform random access to obtain the desired slice service.

15 cl, 18 dwg

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communications technology and, in particular, to a random access method, a random access device and a storage medium.

PREREQUISITES FOR CREATION OF THE INVENTION

[0002] A network slice may provide a complete end-to-end virtual network for a specific user. Network slices of the 5th generation (5G) mobile network can provide differentiated services to users with different service requirements by dividing network resources into multiple network slices. Various service requirements include, but are not limited to, latency, reliability, throughput, isolation, and other features. The operator's network will not only provide information consumption service characterized by best-effort transmission as a communication requirement, but will also meet production management service with deterministic transmission as a communication requirement by allocating logically or physically isolated network resources for services with disparate requirements to communication.

[0003] One network slice may consist of a radio access network (RAN, radio access network) and a core network (CN, core network). The implementation of a network slice depends on the principle that traffic from different slices is processed by different protocol data unit (PDU) sessions. The network can implement different network slices by scheduling and provisioning different Ll/L2 configurations.

[0004] The random access process includes concurrent random access and non-concurrent random access. In concurrent random access, the random access request resource (ie, the resource used by MSG1) is not allocated to any user equipment (UE). That is, multiple users may initiate random access requests on the same time-frequency domain resource, and communication between the base station and the UE must be established through a contention resolution procedure. In non-contentious random access, a random access request resource is allocated by a base station to a given UE, and the base station can uniquely identify the UE if it identifies the allocated random access resource of the UE.

[0005] Typically, with the exception of the positioning process in the radio resource control (RRC) connection state, other events that trigger random access may use the concurrency mode. However, a UE using a particular network slice service may conflict with other UEs during the random access process.

SUMMARY OF THE INVENTION

[0006] To overcome the problems existing in the prior art, embodiments of the present invention provide a random access method, a random access device, and a storage medium.

[0007] According to the first aspect of an embodiment of the present invention, a random access method is provided. The method is applied to a user equipment (UE) and includes receiving resource configuration information, wherein the resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice, determining a first random access resource based on the slice information for a target network slice and resource configuration information, wherein the target network slice is a network slice for initiating random access UE, and initiating random access based on the first random access resource.

[0008] According to a second aspect of an embodiment of the present invention, a random access method is provided. The method is applied at a base station and includes transmitting resource configuration information, wherein the resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice.

[0009] According to a third aspect of an embodiment of the present invention, a random access device is provided. The device is used in a user equipment (UE) and includes a receiving module configured to receive resource configuration information, wherein the resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice, a random resource determination module access configured to determine a first random access resource based on slice information for a target network slice and resource configuration information, wherein the target network slice is a network slice for initiating random access UE, and a random access module configured to initiate random access based on the first random access resource.

[0010] According to a fourth aspect of an embodiment of the present invention, a random access device is provided. The apparatus is applied to a base station and includes a transmission module configured to transmit resource configuration information, wherein the resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice.

[0011] According to a fifth aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program for executing the random access method described in the first aspect.

[0012] According to a sixth aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program for executing the random access method described in the second aspect.

[0013] According to a seventh aspect of an embodiment of the present invention, a random access device is provided. The random access device includes a processor and a memory for storing instructions executed by the processor, wherein the processor is configured to execute the random access method described in the first aspect.

[0014] According to an eighth aspect of an embodiment of the present invention, a random access device is provided. The random access device includes a processor and a memory for storing instructions executed by the processor, wherein the processor is configured to execute the random access method described in the second aspect.

[0015] Technical solutions provided by embodiments of the present invention may provide the following advantages.

[0016] In embodiments of the present invention, the first random access resource for initiating random access may be determined based on the slice information for the target network slice configured to initiate the random access UE and the resource configuration information transmitted by the network side, so that the UE can quickly perform random access and obtain the required slice service.

[0017] In an embodiment of the present invention, in the event of multiple collisions in the first random access resource, the UE may fallback to the resource and re-initiate random access based on the second random access resource to which the fallback is performed. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[0018] It should be understood that the foregoing general description and the following detailed description are provided merely by way of example and explanation and are not intended to limit the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, included in and forming a part of the present specification, illustrate embodiments in accordance with the present invention and, together with the description, serve to explain the principles of the present invention.

[0020] FIG. 1 is a flowchart showing a random access method according to an exemplary embodiment of the invention.

[0021] FIG. 2 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0022] FIG. 3 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0023] FIG. 4 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0024] FIG. 5 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0025] FIG. 6 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0026] FIG. 7 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0027] FIG. 8 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0028] FIG. 9 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0029] FIG. 10 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0030] FIG. 11 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0031] FIG. 12 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0032] FIG. 13 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0033] FIG. 14 is a flowchart showing another random access method according to an exemplary embodiment of the invention.

[0034] FIG. 15 is a block diagram showing a random access device according to an exemplary embodiment of the invention.

[0035] FIG. 16 is a block diagram showing another random access device according to an exemplary embodiment of the invention.

[0036] FIG. 17 is a schematic diagram showing a random access device according to an exemplary embodiment of the present invention.

[0037] FIG. 18 is a schematic diagram showing another random access device according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0038] Illustrative embodiments of the invention will now be discussed in detail, examples of which are shown in the accompanying drawings. In the following description, reference is made to the accompanying drawings, with like numerals throughout different drawings indicating the same or similar elements unless otherwise indicated. The implementations set forth in the following description of illustrative embodiments of the invention do not represent all implementations in accordance with the present invention. Instead, they are merely examples of devices and methods consistent with the aspects of the invention set forth in the appended claims.

[0039] The terms used in this disclosure are intended to describe specific embodiments only, but should not be construed as limiting the present invention. As used in this specification and the accompanying claims, the singular forms include the plural forms unless the context clearly indicates otherwise. It should also be understood that the combination "and/or" as used herein represents and includes any or all possible combinations of one or more related listed elements.

[0040] It should be understood that although terms such as “first,” “second,” and “third” may be used in this disclosure to describe various information, that information should not be limited to these terms. These terms are used only to distinguish information of the same type. For example, the first information may also be referred to as second information, and likewise, the second information may also be referred to as first information, within the spirit of the present disclosure. As used herein, the word “if” may mean “when,” or “after,” or “in response to a determination,” depending on the context.

[0041] In an embodiment of the present invention, a user equipment (UE) using a particular slice service may initiate random access based on a random access channel (RACH) shared resource. Given that multiple UEs use a common RACH resource to initiate random access, this may lead to network congestion.

[0042] To solve this technical problem, the present invention provides a random access solution that allows a separate given RACH resource pool corresponding to a network slice to be configured for each network slice or each group of network slices.

[0043] The UE may initiate random access based on resources in a given random access resource pool corresponding to the network slice configured for random access. For example, network slice 1 corresponds to a given random access resource pool 1, network slice 2 corresponds to a given random access resource pool 2, etc. The network slice configured to initiate random access by the UE is network slice 2, and the UE initiates random access based on resources in the given random access resource pool 2.

[0044] In the embodiment described above, different random access resource pools may be provided for different network slices. That is, random access resource isolation is provided for network slices, so that a UE using a network slice service can access based on independent slice-specific random access resources, which reduces interference.

[0045] Of course, in an actual random access process, the random access resources available to the various network slices are limited. Therefore, different UEs may collide even if they are accessing a given random access resource corresponding to a network slice. To solve this problem, the present invention also provides another random access solution.

[0046] The random access solution provided in the present disclosure will first be described from the user equipment (UE) side.

[0047] An embodiment of the present invention provides a random access method that can be applied to a user equipment (UE). Fig. 1 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[0048] At step 101, resource configuration information is received.

[0049] In an embodiment of the present invention, resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice. The network side may configure resources in a separate specified random access resource pool corresponding to different network slices through resource configuration information.

[0050] At step 102, the first random access resource is determined based on the slice information for the target network slice and the resource configuration information.

[0051] In an embodiment of the present invention, the target network slice is a network slice for initiating random access UE. That is, the target network slice may be a network slice for which random access UE initiation is triggered.

[0052] At step 103, random access is initiated based on the first random access resource.

[0053] In the above-described embodiment of the invention, the first random access resource for initiating random access may be determined based on the slice information for the target network slice configured to initiate the random access UE and the resource configuration information transmitted by the network side. Thus, the probability of conflict between a UE using a certain slice service and other UEs in the random access process is reduced, the success rate of the UE's random access is increased, so that the UE can quickly perform random access and obtain the required slice service.

[0054] In some additional embodiments of FIG. 2 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[0055] At step 201, the shared random access resource is received as the first random access resource in response to the fact that resources in a given random access resource pool corresponding to the target network slice are not configured in the received resource configuration information.

[0056] In an embodiment of the present invention, resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice. The target network slice is the network slice for initiating random access by the UE. That is, the target network slice may be a network slice for which random access UE initiation is triggered. In case the resources in a given random access resource pool of a target network slice configured to initiate random access by the UE are not configured in the resource configuration information, the UE may adopt the shared random access resource as the first random access resource.

[0057] At step 202, random access is initiated based on the first random access resource.

[0058] In the above-described embodiment of the invention, in the case that resources in a given random access resource pool corresponding to a target network slice are not configured in the resource configuration information issued by the network side, the UE may select a shared random access resource for random access.

[0059] In some further embodiments, FIG. 3 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[0060] At step 301, resources in a given random access resource pool corresponding to the target network slice are received as the first random access resource in response to the fact that resources in a given random access resource pool corresponding to the target network slice are configured in the received information about resource configurations.

[0061] In an embodiment of the present invention, resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice. The target network slice is the network slice for initiating random access by the UE. That is, the target network slice may be a network slice for which random access UE initiation is triggered. In case the resources in a given random access resource pool of the target network slice configured to initiate random access by the UE are configured in the resource configuration information, the UE may accept the resources in the given random access resource pool corresponding to the target network slice as the first random access resource .

[0062] At step 302, random access is initiated based on the first random access resource.

[0063] In the embodiment described above, the UE initiates resource-based random access in a given random access resource pool corresponding to the target network slice, which reduces the possibility of conflict between the UE using the slice service and other UEs in the random access process and increases the likelihood of success random access of the UE, so that the UE can quickly perform random access and obtain the required slice service.

[0064] In some additional embodiments of the invention for the initial random access process of the UE, the UE may obtain resource configuration information through a system message. In addition, the UE may determine a first random access resource to initiate random access based on slice information for the target network slice and resource configuration information. The target network slice is the network slice for initiating random access by the UE.

[0065] In the above-described embodiment of the invention for the initial random access process of the UE, the UE can determine the resource configuration information through a system message containing the resource configuration information, and then determine the first random access resource to initiate the random access, which increases the success rate of the random access access and ensures high availability.

[0066] In some further embodiments of the invention, for a random access process triggered by a physical downlink control channel (PDCCH) instruction, the UE may receive a PDCCH instruction containing resource configuration information. In addition, the UE may determine a first random access resource to initiate random access based on slice information for the target network slice and resource configuration information.

[0067] In the above-described embodiment of the invention, in a random access process triggered by a PDCCH instruction, the UE may determine resource configuration information through a PDCCH instruction containing resource configuration information, and then determine a first random access resource to initiate random access, which increases the probability success of random access and ensures high availability.

[0068] In some further embodiments of the invention, the UE establishes a radio resource control (RRC) connection with a base station. That is, in the case that an RRC message issued by the base station triggers the UE to initiate random access, the UE may receive the RRC message containing resource configuration information. In addition, the UE may determine a first random access resource to initiate random access based on slice information for the target network slice and resource configuration information.

[0069] In the above-described embodiment of the invention, in case the UE has established an RRC connection with the network side, the UE may determine the resource configuration information through an RRC message containing the resource configuration information, and then determine the first random access resource to initiate random access, which increases the success rate of random access and ensures high availability.

[0070] In some further embodiments, FIG. 4 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[0071] At step 401, resources in a given random access resource pool corresponding to one target network slice of the plurality of target network slices are accepted as the first random access resource based on the priority order of the plurality of target network slices and the received resource configuration information.

[0072] In an embodiment of the present invention, resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice. The target network slice is the network slice for initiating random access by the UE. There may be multiple target network slices for initiating random access by the UE.

[0073] According to the priority order of the plurality of target network slices and the received resource configuration information, the UE may receive resources in a given random access resource pool corresponding to one target network slice from the plurality of target network slices as the first random access resource in the priority order from high to low.

[0074] For example, the priority of target network slice 1 is higher than the priority of target network slice 2, and the priority of target network slice 2 is higher than the priority of target network slice 3, then the UE preferably accepts resources in a given random access resource pool corresponding to the target network slice 1 as the first random access resource.

[0075] In case the resources in the given random access resource pool corresponding to the target network slice 1 are not configured in the resource configuration information, the UE takes the resources in the given random access resource pool corresponding to the target network slice 2 as the first random access resource .

[0076] Of course, in the case that the resources in the given random access resource pool corresponding to the target network slice 2 are not configured in the resource configuration information, the UE takes the resources in the given random access resource pool corresponding to the target network slice 3 as the first resource random access. The rest can be done in the same way until the first random access resource is identified.

[0077] At step 402, random access is initiated based on the first random access resource.

[0078] In the embodiment described above, the UE can determine the first random access resource based on the priority order of the plurality of target network slices and resource configuration information, which increases the success rate of the random access and ensures high availability.

[0079] In some further embodiments of the invention, in case there are multiple target network slices for initiating random access UEs, the priority order of the plurality of target network slices may be determined, but not limited to, by any of the following methods.

[0080] In an exemplary implementation, the priority order of multiple target network slices may be determined by the UE itself.

[0081] Additionally, the priority order of the plurality of target network slices may be determined by the UE based on the priority order of the services.

[0082] For example, the predetermined service priority order is that the priority of application 1 is higher than the priority of application 2. In the case where target network slice 1 provides a service corresponding to application 1 to the UE, and target network slice 2 provides a service to the UE, corresponding to application 2, the UE may determine that the priority of target network slice 1 is higher than the priority of target network slice 2.

[0083] The above is only an illustrative description. In practical applications, the UE may also use other methods to determine the priority order of multiple target network slices. In another possible implementation, the priority order of a plurality of target network slices may be configured and issued by the network side.

[0084] Additionally, the UE may determine the priority order of the plurality of target network slices based on the received first indication message issued by the network side. The first indication message is configured to configure the priority order of the plurality of target network slices.

[0085] For example, in the case that the first indication message is configured with a successively decreasing priority order of network slice 1, network slice 2, and network slice 3, the UE may determine that the priority order of network slice 1 is higher than the priority order of network slice 2, and the order The priority order of network slice 2 is higher than the priority order of network slice 3.

[0086] In the above-described embodiment of the invention, the priority order of a plurality of target network slices may be determined by the UE itself, or the priority order of a plurality of network slices may be configured and issued by the network side, which can be easily implemented and has high availability.

[0087] In some further embodiments, FIG. 5 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[0088] At step 501, a first random access resource is determined based on the slice information for the target network slice and the received resource configuration information.

[0089] In an embodiment of the present invention, the target network slice is a network slice for initiating random access UE. That is, the target network slice may be a network slice for which random access UE initiation is triggered. The resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice.

[0090] At step 502, random access is initiated based on the first random access resource.

[0091] At step 503, random access is reinitiated based on the second random access resource that has been rolled back, in response to the satisfaction of a predetermined condition for rollback.

[0092] In an embodiment of the present invention, the second random access resource may be an element of an alternative random access resource pool. An alternative random access resource pool includes, but is not limited to, at least one of the resources in a given random access resource pool corresponding to other network slices, other random access resources corresponding to a target network slice, or general random access resources.

[0093] Resources in a given random access resource pool corresponding to other network slices refer to resources in a given random access resource pool corresponding to other network slices other than the target network slice. For example, the target network slice is network slice 2, and resources in a given random access resource pool corresponding to other network slices may include resources in a given random access resource pool corresponding to network slice 1, network slice 3, network slice 4, etc. . respectively.

[0094] Other random access resources corresponding to the target network slice may include random access resources corresponding to other resource configurations other than the first resource configuration corresponding to the target network slice. The UE initiates random access based on the first resource configuration. For example, the target network slice corresponds to resource configuration 1 and resource configuration 2. In the case where the UE initiates random access based on resource configuration 1, other random access resources corresponding to the target network slice may refer to random access resources corresponding to resource configuration 2.

[0095] Common random access resources include, but are not limited to, random access resources that can be used by multiple UEs. In an embodiment of the present invention, the plurality of UEs includes, but is not limited to, all types of UEs. Alternatively, the plurality of UEs may include, but is not limited to, specified UE types. Specified UE types may include, but are not limited to, long term evolution (LTE) terminals, machine type communication (MTC) devices, narrow band Internet of Things (NB-IOT) devices, etc. .p., which are not limited in this disclosure.

[0096] In an embodiment of the present invention, the second random access resource may also be a random access resource configured by the network side. Additionally, the second random access resource may be a random access resource that is determined based on the received second indication message issued by the network side.

[0097] The random access resource indicated by the second indication message may be any element in the above-mentioned alternative random access resource pools. Alternatively, the random access resource indicated by the second indication message may be other random access resources different from any element in the above-mentioned alternative random access resource pools.

[0098] In a possible implementation, the second random access resource may use, but is not limited to, one random access resource configured and indicated by the network side for the UE that needs to fall back to the resource, according to the number of UEs initiating random access in the random access resources different slices.

[0099] For example, in the case that a UE satisfies a predetermined condition for fallback and needs to rollback to a second random access resource, and the network side determines that the number of UEs initiating random access in the random access resource corresponding to a certain network slice is small, the network side may directly accept the random access resource corresponding to the network slice as the second random access resource, and then transmit it to the UE, so that the UE can fall back to the random access resource corresponding to the network slice to re-initiate the random access.

[00100] In the embodiment described above, in the case of multiple collisions in the first random access resource, the UE may fallback to the resource and re-initiate random access based on the second random access resource to which the fallback is made. This avoids random access failure , caused by the UE always initiating random access at the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00101] In some additional embodiments of the invention,

in case there are a plurality of resources in a given random access resource pool corresponding to other network slices, the UE may determine the priority order of the plurality of resources in a given random access resource pool corresponding to other network slices in the following ways, but not limited to.

[00102] In an exemplary implementation, the priority order of a plurality of resources in a given pool of random access resources corresponding to other network slices may be determined by the UE itself.

[00103] Additionally, the UE may determine the priority order of a plurality of resources in a given random access resource pool corresponding to other network slices in a predetermined manner. A predetermined method includes, but is not limited to, a randomly selected method.

[00104] In another possible implementation, the priority order of a plurality of resources in a given pool of random access resources corresponding to other network slices may be configured and issued by the network side.

[00105] The UE may determine the priority order of a plurality of resources in a given random access resource pool corresponding to other network slices based on the received third indication message. The third indication message is configured to configure the priority order of a plurality of resources in a given pool of random access resources corresponding to other network slices.

[00106] In the embodiment described above, the priority order of a plurality of resources in a given random access resource pool corresponding to other network slices may be determined by the UE itself, or the priority order of a plurality of resources in a given random access resource pool corresponding to other network slices may be configured and issued by the network side, which can be easily implemented and has high availability.

[00107] In some additional embodiments of the invention, in the case where there are multiple other random access resources corresponding to the target network slice, the order of priority of the plurality of other random access resources corresponding to the target network slice may be determined by any of the following methods, but not limited to: .

[00108] In an exemplary implementation, the priority order of the plurality of other random access resources corresponding to the target network slice may be determined by the UE itself.

[00109] Additionally, the priority order of a plurality of other random access resources corresponding to the target network slice may be determined by the UE in a predetermined manner. A predetermined method includes, but is not limited to, a randomly selected method.

[00110] In another possible implementation, the priority order of a plurality of other random access resources corresponding to the target network slice may be configured and issued by the network side.

[00111] Additionally, the UE may determine the priority order of a plurality of other random access resources corresponding to the target network slice based on the received fourth indication message issued by the network side. The fourth indication message is configured to configure the priority order of a plurality of other random access resources corresponding to the target network slice.

[00112] In the embodiment described above, the priority order of a plurality of other random access resources corresponding to the target network slice may be determined by the UE itself, or the priority order of a plurality of other random access resources corresponding to the target network slice may be configured and issued by the network side, which may be easy to implement and have high availability.

[00113] In some additional embodiments of FIG. 6 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[00114] At step 601, a first random access resource is determined based on the slice information for the target network slice and the received resource configuration information.

[00115] The target network slice is the network slice for initiating random access by the UE. That is, the target network slice may be a network slice for which random access UE initiation is triggered. The resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice.

[00116] At step 602, random access is initiated based on the first random access resource.

[00117] At step 603, a second random access resource is determined in alternative random access resource pools in accordance with a predetermined priority order of random access resources in response to the satisfaction of a predetermined condition for fallback.

[00118] In an embodiment of the present invention, the predetermined high to low priority order includes, but is not limited to, other random access resources corresponding to the target network slice, resources in a given random access resource pool corresponding to other network slices, and general random access resources .

[00119] The above is only an illustrative description. In practical applications, the predefined priority order may also include other priority orders.

[00120] The UE may select an element in the alternative resource pools as a second random access resource in a predetermined high to low priority order.

[00121] For example, the predefined priority order from high to low is slice 1, slice 2, and slice 3.

[00122] The resource configuration information includes random access resource configuration 0 and random access resource configuration 1 corresponding to slice 1, random access resource configuration 2 corresponding to slice 2, random access resource configuration 3 corresponding to slice 3, and a general random access resource configuration .

[00123] In the case that slice 1 is configured to initiate random access by the UE, namely slice 1 is accepted as the target network slice, the UE preferably initiates random access based on random access resources corresponding to configuration 0, and sequentially selects random access resources corresponding to configuration random access resource configuration 1, random access resource configuration 2, random access resource configuration 3, and general random access resource configuration, respectively, to initiate random access according to the above-mentioned predetermined priority order in response to satisfying a predetermined condition for fallback.

[00124] At step 604, the random access is reinitiated based on the second random access resource that was rolled back.

[00125] In the embodiment described above, in the case of multiple collisions in the first random access resource, the UE may fallback to the resource and re-initiate the random access based on the second random access resource determined by the UE. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00126] In some additional embodiments of FIG. 7 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[00127] At step 701, a first random access resource is determined based on the slice information for the target network slice and the received resource configuration information.

[00128] The target network slice is the network slice for initiating random access by the UE. That is, the target network slice may be a network slice for which random access UE initiation is triggered. The resource configuration information is for configuring resources in a given random access resource pool corresponding to at least one network slice.

[00129] At step 702, random access is initiated based on the first random access resource.

[00130] At step 703, a second random access resource is determined based on the received second indication message in response to the satisfaction of a predetermined condition for fallback.

[00131] In a possible implementation, the random access resource indicated by the second indication message may be an element in the aforementioned alternative random access resource pools. The UE determines an element in the alternative random access resource pools as the second random access resource based on the second indication message.

[00132] In another possible implementation, the random access resource indicated by the second indication message may be an element in the alternative random access resource pools, or may be a random access resource different from any element in the alternative random access resource pools. The present invention is not limited to this.

[00133] At step 704, the random access is reinitiated based on the second random access resource that was rolled back.

[00134] In the embodiment described above, in the case of multiple collisions in the first random access resource, the UE may fallback to the resource, determine the second random access resource based on the indication from the network, and re-initiate the random access based on the second random access resource. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00135] In an exemplary implementation, the second indication message may be configured to implicitly indicate a second random access resource.

[00136] Additionally, the second indication message may be configured to, but not limited to, indicate a resource selection index. The resource selection index may be associated with an element in the alternate random access resource pool or with other random access resources other than the alternate random access resource pool.

[00137] For example, resource selection index "01" corresponds to other random access resources corresponding to the target network slice, resource selection index "10" corresponds to resources in a given random access resource pool corresponding to other network slices, and resource selection index "11" corresponds to shared random access resources. In the case where the resource selection index indicated by the third indication message received by the UE is "11", the UE may use the general random access resources as the second random access resource.

[00138] As another example, in the case that the resource selection index "00" corresponds to the third random access resource of a certain network slice, the UE may use the third random access resource of the network slice as the second random access resource to fall back to the resource according to the selection index resources. The third random access resource does not belong to any element in the alternate random access resource pool.

[00139] In another possible implementation, the second indication message may be configured to explicitly indicate the second random access resource.

[00140] Additionally, the second indication message may be directly configured, without limitation, to configure the second random access resource.

[00141] For example, in the case where the second indication message is configured to configure the random access resource configuration 1, the UE directly receives the random access resource corresponding to the random access resource configuration 1 as the second random access resource.

[00142] In the embodiment described above, the second indication message may be configured to indicate the second random access resource either implicitly or explicitly. According to the second indication message issued by the network side, the UE can quickly determine the second random access resource to be rolled back in case a fallback to the resource occurs. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00143] In some further embodiments of the invention, the UE may receive a random access response (RAR) message containing a second indication message issued by the network side during the random access process. Therefore, the second random access resource is determined based on the second indication message.

[00144] Additionally, the UE may receive an RRC message containing a second indication message sent by the network side in case the UE establishes an RRC connection with the base station side. In an embodiment of the present invention, the RRC message may be an RRC message carrying a second indication message that is separately issued to the UE.

[00145] In the above-described embodiment, the UE may determine the third indication message based on the received RAR message or RRC message, and then determine the second random access resource to fall back to the resource according to the second indication message, thereby achieving the purpose of determining the second random access resource access for rollback based on the network side specification and high availability is ensured.

[00146] In some further embodiments of the invention, the UE initiates random access based on the first random access resource and may fallback to the second random access resource to re-initiate the random access in response to satisfying a predetermined condition for fallback.

[00147] In an exemplary implementation, the predetermined condition for rollback may include that the number of failures when initiating random access based on the first random access resource reaches the first threshold number for rollback. Here, the first rollback threshold may be configured to indicate the cumulative number of failures allowed to trigger random access based on the first random access resource before rolling back to the second random access resource for the random access.

[00148] For example, in the case where the first rollback threshold number is N1, the number of times the UE fails to initiate random access based on the first random access resource reaches N1, and the UE determines that the predetermined condition for rollback is satisfied, and can rollback to the second random access resource to reinitiate random access.

[00149] In another possible implementation, the predetermined condition for rollback may include the expiration of the first timer for rollback. The first rollback timer is configured to indicate the cumulative duration allowed to initiate random access based on the first random access resource before rolling back to the second random access resource for random access.

[00150] For example, in the case that the duration of the first timer for rollback is tl, the cumulative duration of random access initiated by the UE based on the first random access resource reaches t1, and the UE determines that the predetermined condition for rollback is satisfied and can perform rollback to the second random access resource to reinitiate the random access.

[00151] In another possible implementation, the predetermined condition for rollback may include receiving a rollback indication message to a random access resource corresponding to the target network slice.

[00152] In an embodiment of the present invention, the UE may determine that a predetermined condition for rollback is satisfied based on a rollback indication message to the random access resource corresponding to the target network slice issued by the network side, so as to rollback to the second random access resource for re-initiation random access.

[00153] It should be understood that a predetermined condition for rollback may include any or a combination of the above, and other possible predefined conditions for rollback should be within the spirit of the present invention.

[00154] In the embodiment described above, the UE may rollback to the resource based on the satisfaction of a predetermined condition for rollback, and reinitiate random access on the second random access resource that was rolled back, thereby increasing the success rate of the random access.

[00155] In some additional embodiments, in addition to configuring resources in a given random access resource pool corresponding to at least one network slice, the resource configuration information may be configured to configure a first rollback threshold and/or a first rollback timer .

[00156] In the above-described embodiment, the network side can directly configure the first rollback threshold amount and/or the first rollback timer through resource configuration information, which helps the UE perform random access faster and increases the random access success rate.

[00157] In a possible implementation, the network side may transmit a fallback indication message to the random access resource via a RAR message. Upon receiving the RAR message, the UE may fallback to the second random access resource to re-initiate random access based on the fallback to random access resource indication message.

[00158] In another possible implementation, the network side may send a fallback indication message to the random access resource via an RRC message. Upon receiving the RRC message, the UE may fallback to the second random access resource to re-initiate random access based on the fallback to random access resource indication message.

[00159] In the embodiment described above, the UE may perform a resource fallback based on a RAR or RRC message containing a random access resource fallback indication message issued by the network side. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00160] In some further embodiments of the invention, a rollback indication message to a random access resource may be configured to configure a second rollback threshold and a second rollback timer. The second rollback threshold is configured to indicate the number of failures allowed to trigger random access based on the second random access resource before rolling back from the second random access resource to the first random access resource to trigger the random access. The second rollback timer is configured to indicate an aggregate duration allowed to initiate random access based on the second random access resource before rolling back from the second random access resource to the first random access resource to initiate the random access.

[00161] For example, in the case that the second rollback threshold number is N2, the number of times the UE rolls back from the first random access resource to the second random access resource to re-initiate random access reaches N2, and the current total number of random accesses initiated does not currently reach the TransMax (maximum number of random access) preamble, the UE may fallback to the first random access resource to re-initiate the random access.

[00162] In case the first random access resource is resources in a given random access resource pool corresponding to the target network slice, the UE may preferably fallback to a resource in the given random access resource pool corresponding to the target network slice. Until the predetermined condition for rollback is satisfied again, the UE rolls back to the resource again. Alternatively, the UE rolls back to resources in a given random access resource pool corresponding to the target network slice, the total number of random access initiations reaches the maximum number of random accesses, and the UE can report the random access failure to a higher layer.

[00163] As another example, the UE may rollback to the first random access resource to re-initiate the random access, in case the duration of the second timer for rollback is t2, the cumulative duration for the UE to rollback from the first random access resource to the second random access resource to initiate random access reaches t2, and the total number of currently initiated random accesses does not reach the maximum number of random accesses. That is, the UE may preferentially select resources in a given random access resource pool corresponding to the target network slice to re-initiate the random access. Until the predetermined condition for rollback is satisfied again, the UE rolls back to the resource again. Alternatively, the UE rolls back to resources in a given random access resource pool corresponding to the target network slice, the total number of random access initiations reaches the maximum number of random accesses, and the UE can report the random access failure to a higher layer.

[00164] In the above-described embodiment, the problem that the UE always initiates random access in the second random access resource after falling back to the second access resource until the maximum number of random accesses is reached, which also results in to a random access failure. After at least one collision occurs in the second random access resource, the UE may fallback to the first random access resource to initiate random access, which increases the probability of success of the UE's random access.

[00165] In some further embodiments of the invention, the second rollback threshold amount and the second rollback timer are not configured in the rollback indication message to the random access resource. The UE may rollback to the first random access resource to re-initiate the random access in case the total number of currently initiated random accesses does not reach the maximum number of random accesses after the UE rolls back from the first random access resource to the second random access resource to perform one random access failure. The first random access resource may include resources in a given random access resource pool corresponding to the target network slice.

[00166] In the above-described embodiment, the problem that the UE always initiates random access in the second random access resource after falling back to the second access resource until the maximum number of random accesses is reached, which also results in to a random access failure. After one collision occurs in the second random access resource, the UE may fallback to the first random access resource to initiate random access, thereby increasing the success rate of the UE's random access.

[00167] In some additional embodiments of the invention, the random access resource fallback indication message may include a FallbackFactor. Additionally, the FallbackFactor may be a fallback probability value, thereby allowing the UE to implement probabilistic fallback.

[00168] In an embodiment of the present invention, the UE may generate a random number after receiving a random access resource rollback indication message to determine whether to perform a rollback to the resource in accordance with the generated random number and the rollback probability value transmitted in the resource rollback indication message random access. In the event that it is determined that a rollback to a resource is necessary, random access may be re-initiated based on the second random access resource that was rolled back.

[00169] In an exemplary implementation, the UE may randomly generate, but is not limited to, a random number satisfying a uniform distribution. The random number may be in, but is not limited to, the range [0,1]. In case the generated random number is less than the rollback probability value, the UE rolls back to the random access resource. In case the generated random number is greater than or equal to the rollback probability value, the UE may not rollback to the random access resource.

[00170] In another possible implementation, the UE may generate random numbers satisfying other distributions. In case the generated random number is greater than the rollback probability value, the UE rolls back to the random access resource. In case the generated random number is less than or equal to the rollback probability value, the UE may not rollback to the resource.

[00171] In the embodiment described above, the UE can determine whether to rollback to a resource based on the rollback probability value contained in the random access resource fallback indication message and the generated random number, and then reinitiate the random access based on the second resource random access that has been rolled back. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, so that the goal of probabilistic fallback for the UE is achieved and the success rate of the UE's random access is increased .

[00172] In some further embodiments of the invention, the resource configuration information includes a rollback probability value.

[00173] In an embodiment of the present invention, the UE may generate a random number to determine whether to rollback to a resource according to the generated random number and the rollback probability value carried in the resource configuration information. In the event that it is determined that a rollback to a resource is necessary, random access may be re-initiated based on the second random access resource that was rolled back.

[00174] In an exemplary implementation, the UE may randomly generate, but is not limited to, a random number satisfying a uniform distribution. The random number may be in, but is not limited to, the range [0,1]. In case the generated random number is less than the rollback probability value, the UE rolls back to the random access resource. In case the generated random number is greater than or equal to the rollback probability value, the UE may not rollback to the random access resource.

[00175] In another possible implementation, the UE may generate random numbers satisfying other distributions. In case the generated random number is greater than the rollback probability value, the UE rolls back to the random access resource. In case the generated random number is less than or equal to the rollback probability value, the UE may not rollback to the resource.

[00176] In the embodiment described above, the UE may determine whether to rollback to a resource based on the rollback probability value contained in the resource configuration information and a generated random number, and then reinitiate random access based on the second random access resource to which was rolled back. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, so that the purpose of probabilistic rollback of the UE is achieved and the success rate of the UE's random access is increased.

[00177] In some further embodiments of the invention, the UE may determine slice information for a target network slice in any of, but not limited to, the following methods.

[00178] In an exemplary implementation, the UE may obtain slice information for a target network slice transmitted by the non-access stratum to the AS access stratum in the event that the NAS requests the AS to initiate an RRC connection.

[00179] In another possible implementation for random access triggered by a paging on the network side, the UE may receive a paging message containing slice information for the target network slice issued by the network side.

[00180] In another possible implementation, for a random access process triggered by a PDCCH instruction, the UE may receive a PDCCH instruction containing slice information for the target network slice issued by the network side.

[00181] In another possible implementation, in case a logical channel identifier is associated with slice information, the UE may determine that there is a logical channel with data to be transmitted, determine the slice information associated with the logical channel according to the logical channel channel identifier, and accept slice information as slice information for the target network slice. Additionally, the association between a logical channel identifier and slice information may include, but is not limited to, the same or different slice information corresponding to different logical channel identifiers.

[00182] In an embodiment of the present invention, the slice information for a target network slice may include, but is not limited to, at least one of single-network slice selection assistance information (S-NSSAI, single-network slice selection assistance information), a type of slice service (SST, slice service type), slice differentiator identifier (SD, slice differentiator), slice index, or operator-defined access type.

[00183] In the embodiment described above, the UE may determine slice information for the target network slice in various ways, and may subsequently determine the first random access resource to initiate random access according to the slice information for the target network slice and the received resource configuration information. The possibility of conflict of the UE using the slice service in the random access process is reduced, and the success rate of the UE's random access is increased, so that the UE can quickly perform random access and obtain the required slice service.

[00184] The random access solution provided in the present disclosure will be described below from the base station side.

[00185] An embodiment of the present invention provides a random access method that can be used in a base station. Fig. 8 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[00186] At step 801, resource configuration information is determined.

[00187] In an embodiment of the present invention, resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice.

[00188] At step 802, resource configuration information is transmitted.

[00189] In the above-described embodiment of the invention, the base station may configure resources in a given random access resource pool corresponding to at least one network slice through resource configuration information, and then transmit them to the user equipment (UE) side, so that the UE may define the first random access resource to initiate random access. The possibility of conflict when a UE initiates random access to a network slice is reduced, and the congestion of random access resources in a network slice is effectively eliminated, which increases the success rate of the UE's initiation of random access and allows the UE to quickly perform random access and obtain the required slice service.

[00190] In an embodiment of the present invention, the base station may transmit resource configuration information in any of, but not limited to, the following ways.

[00191] In an exemplary implementation, the base station may broadcast a system message containing resource configuration information so that the UE can determine resource configuration information according to the system message before initiating random access.

[00192] In another possible implementation, the base station may transmit a physical downlink control channel (PDCCH) instruction, and resource configuration information is carried in the PDCCH instructions.

[00193] In another possible implementation, the base station may transmit a radio resource control (RRC) message containing resource configuration information when an RRC connection is established with the UE.

[00194] In the above-described embodiment, the base station can transmit resource configuration information to the UE in various ways, so that the UE can determine the first random access resource to initiate random access, which can be easily implemented and has high availability.

[00195] In some additional embodiments of FIG. 9

is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following step.

[00196] At step 901, a first indication message is transmitted.

[00197] In an embodiment of the present invention, the first indication message may be configured to configure the priority order of the plurality of network slices. The base station may transmit a first indication message to the UE. In case there are a plurality of target network slices for the UE to initiate random access, the UE side may determine the priority order of the plurality of target network slices according to the first indication message to select the target network slice from the plurality of target network slices and initiate random access based on resources in the specified random access resource pool corresponding to the selected target network slice, as the first random access resource.

[00198] In the embodiment described above, the base station may configure and transmit the priority order of a plurality of network slices to the UE, so that the UE can determine a random access resource to initiate random access, and the success rate of the UE's random access is increased.

[00199] In some additional embodiments of FIG. 10 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following step.

[00200] At step 1001, a second indication message is transmitted.

[00201] In an embodiment of the present invention, the second indication message is configured to determine to the UE a second random access resource that is used when a fallback to the resource is performed.

[00202] The random access resource indicated by the second indication message may be any element in the above alternative random access resource pools. Alternatively, the random access resource indicated by the second indication message may be other random access resources different from any element in the above-mentioned alternative random access resource pools.

[00203] In the embodiment described above, the base station side may transmit a second indication message to configure a second random access resource to fall back to the resource for the UE. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00204] In an exemplary implementation, the second indication message may be configured to implicitly indicate a second random access resource. Additionally, the second indication message may be configured to, but is not limited to, indicate a resource selection index. The resource selection index may be associated with an element in the alternate random access resource pool or with other random access resources other than the alternate random access resource pool.

[00205] In another possible implementation, the second indication message may be configured to explicitly indicate a second random access resource. Additionally, the second indication message may be directly configured, without limitation, to configure the second random access resource.

[00206] In some additional embodiments, the base station may transmit the second indication message to the UE in any of, but not limited to, the following methods. The second indication message is configured to indicate to the UE to determine a second random access resource. In an exemplary implementation, the base station may transmit a random access response message containing a second indication message.

[00207] In another possible implementation, the base station may transmit an RRC message containing a second indication message.

[00208] In the embodiment described above, the base station may transmit a second indication message to the UE by, but not limited to, an RAR message or an RRC message, such that the UE determines a second random access resource to fall back to the resource based on the second indication message. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00209] In some additional embodiments of FIG. 11 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following step.

[00210] At step 1101, a third indication message is transmitted.

[00211] In an embodiment of the present invention, the third indication message is configured to configure the priority order of a plurality of resources in a given random access resource pool corresponding to other network slices other than the target network slice, and the target network slice is a network slice for initiating the random access UE. That is, the target network slice may be a network slice in which random access initiation of the UE is triggered.

[00212] In the embodiment described above, the base station may configure and transmit the priority order of a plurality of resources in a given pool of random access resources corresponding to other network slices for the UE, so that the UE can determine a second random access resource to fall back to the resource. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00213] In some additional embodiments of FIG. 12 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following step.

[00214] At step 1201, a fourth indication message is transmitted.

[00215] In an embodiment of the present invention, the base station may configure the priority order of a plurality of other random access resources corresponding to the target network slice through the fourth indication message, and the target network slice is the network slice for initiating the random access UE. That is, the target network slice may be a network slice for which random access initiation by the UE is triggered. Based on the second indication message, the UE may determine the priority order of a plurality of other random access resources corresponding to the target network slice. In addition, in the event that the UE needs to rollback to a resource, a second random access resource to rollback to the resource may be determined based on the priority order of a plurality of other random access resources corresponding to the target network slice.

[00216] In the embodiment described above, the base station may configure and transmit the priority order of a plurality of other random access resources corresponding to a target network slice for the UE, so that the UE may determine a second random access resource to fall back to the resource. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00217] In some additional embodiments of the invention, the resource configuration information provided by the base station may also be configured to configure a first rollback threshold and/or a first rollback timer.

[00218] The first rollback threshold is configured to indicate the cumulative number of failures allowed to trigger random access based on the first random access resource before falling back to the second random access resource for the random access. The first rollback timer is configured to indicate the cumulative duration allowed to initiate random access based on the first random access resource before rolling back to the second random access resource for random access.

[00219] In the embodiment described above, the first rollback threshold amount and/or the first rollback timer may be configured directly for the UE using resource configuration information. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00220] In some additional embodiments of FIG. 13 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following step.

[00221] At step 1301, a fallback indication message to the random access resource is transmitted.

[00222] In an embodiment of the present invention, the base station may direct the UE to fallback to the resource by issuing a fallback to random access resource indication message.

[00223] In an exemplary implementation, the base station may transmit a RAR message containing a fallback indication message to a random access resource. In another possible implementation, the base station may transmit an RRC message containing a fallback indication message to the random access resource.

[00224] In the embodiment described above, the base station may direct the UE to fallback to the resource by transmitting a fallback to random access resource indication message. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00225] In some further embodiments of the invention, the random access resource rollback indication message issued by the base station may be configured to configure a second rollback threshold amount and/or a second rollback timer.

[00226] The second rollback threshold is configured to indicate the cumulative number of failures allowed to trigger random access based on the second random access resource before rolling back from the second random access resource to the first random access resource to trigger random access. The second rollback timer is configured to indicate an aggregate duration allowed to initiate random access based on the second random access resource before rolling back from the second random access resource to the first random access resource to initiate the random access.

[00227] In case the first random access resource includes resources in a given random access resource pool corresponding to the target network slice, the UE may preferably fallback to resources in the given random access resource pool corresponding to the target network slice.

[00228] In the embodiment described above, a second rollback threshold amount and/or a second rollback timer may be configured for the UE by a random access resource rollback indication message issued by the base station. The problem that the UE always initiates random access on the second random access resource that is rolled back until the maximum number of random accesses is reached can be avoided, which also causes the random access to fail, so the success rate is increased random access UE.

[00229] In some additional embodiments of the invention, the random access resource fallback indication message may include a FallbackFactor. Alternatively, the FallbackFactor may include a fallback probability value. In the above-described embodiment of the invention, the base station may transmit a rollback probability value in a rollback indication message to the random access resource, so that the UE can perform the rollback probability.

[00230] In some further embodiments of the invention, the resource configuration information includes a rollback probability value.

[00231] In the embodiment described above, the base station may transmit a rollback probability value in the resource configuration information so that the UE can perform the rollback probability.

[00232] In some further embodiments of the invention, a base station may transmit a paging message containing slice information for a target network slice to the UE when paging the UE, so that the UE can determine slice information for the target network slice in accordance with the paging message. The slice information for the target network slice includes, but is not limited to, at least one of one network slice selection auxiliary information, a slice service type, a slice differentiator identifier, a slice index, or an operator-defined access type.

[00233] In some further embodiments of the invention, in case the UE is triggered to initiate random access via a PDCCH instruction, the base station may transmit a PDCCH instruction containing slice information for the target network slice to the UE, so that the UE can determine the slice information for the target network slice slice according to the paging message. The slice information for the target network slice includes, but is not limited to, at least one of one network slice selection auxiliary information, a slice service type, a slice differentiator identifier, a slice index, or an operator-defined access type.

[00234] In the above-described embodiment of the invention, the base station may transmit slice information for the target network slice to the UE in various ways, so that the UE can determine the first random access resource for initiating random access based on the slice information for the target network slice and resource configuration information , which can be easily implemented and has high availability.

[00235] In some additional embodiments of FIG. 14 is a flowchart showing a random access method according to an embodiment of the invention. The method may include the following steps.

[00236] At step 1401, the base station transmits resource configuration information.

[00237] The resource configuration information is configured to configure resources in a given random access resource pool corresponding to at least one network slice. After determining the resource configuration information, the base station transmits it to the UE.

[00238] At step 1402, the UE receives resources in a given resource pool

a random access resource corresponding to the target network slice as a first random access resource, in response to the fact that resources in a given random access resource pool corresponding to the target network slice are configured in the resource configuration information.

[00239] Of course, in the case that the resources in a given random access resource pool corresponding to the target network slice are not configured in the resource configuration information, the UE takes the shared random access resource as the first random access resource. This describes the case where resources in a given random access resource pool corresponding to a target network slice are configured in resource configuration information.

[00240] At step 1403, the UE initiates random access based on the first random access resource.

[00241] At step 1404, the base station transmits a fallback indication message to a random access resource corresponding to the target network slice.

[00242] At step 1405, the UE determines a second random access resource.

[00243] In an embodiment of the present invention, the UE may determine a second random access resource according to a second indication message sent by the network side. Alternatively, the UE may determine a second random access resource in an alternative random access resource pool according to a predetermined priority order.

[00244] At step 1406, the UE reinitiates the random access based on the second random access resource that was rolled back.

[00245] In an embodiment of the present invention, the second rollback threshold amount and the second rollback timer are not configured in the rollback indication message to the random access resource. The UE may rollback to the first random access resource to reinitiate random access in the event that the total number of currently initiated random accesses does not reach the maximum number of random accesses after the UE rolls back from the first random access resource to the second random access resource to perform one failure. random access.

[00246] A second rollback threshold amount and/or a second rollback timer is configured in a rollback indication message to the random access resource. The UE may rollback to the first random access resource to reinitiate the random access if the number of rollbacks to the second random access resource to reinitiate the random access reaches the second rollback threshold number or the second rollback timer expires, and the total number initiated at this time the moment of random accesses does not reach the maximum number of random accesses.

[00247] It should be understood that the above has been provided only as an illustrative description, and one or a combination of several of the above random access solutions presented in the present disclosure are within the spirit of the present disclosure.

[00248] In the embodiment described above, in the case of multiple collisions in the first random access resource, the UE may rollback to the resource and re-initiate the random access based on the second random access resource that was rolled back. This avoids random access failure caused by the UE always initiating random access on the first random access resource until the maximum number of random accesses is reached, which increases the success rate of the UE's random access.

[00249] The present disclosure also provides embodiments of an apparatus for implementing the function of the invention corresponding to the above-described embodiments of a method for implementing the function of the invention.

[00250] FIG. 15 is a block diagram showing a random access device according to an exemplary embodiment of the invention. The device is used in a user equipment (UE) and includes a receiving module 1501, a random access resource determination module 1502, and a random access module 1503.

[00251] The receiving module 1501 is configured to receive resource configuration information configured to configure resources in a given random access resource pool corresponding to at least one network slice.

[00252] The random access resource determining module 1502 is configured to determine a first random access resource based on the slice information for the target network slice and the resource configuration information, where the target network slice is a network slice for initiating the random access UE.

[00253] The random access module 1503 is configured to initiate random access based on the first random access resource.

[00254] FIG. 16 is a block diagram showing a random access device according to an exemplary embodiment of the invention. The device is used in a base station and includes a resource configuration information determining module 1601 and a transmission module 1602.

[00255] The resource configuration information determining module 1601 is configured to determine resource configuration information configured to configure resources in a given random access resource pool corresponding to at least one network slice.

[00256] The transmission module 1602 is configured to transmit resource configuration information.

[00257] Since the apparatus embodiments correspond substantially to the method embodiments, reference is made to a partial description of the method embodiments. The above-described embodiments of the apparatus are intended merely for illustration, wherein blocks described as separate components may or may not be physically separated, and components shown as blocks may or may not be physical blocks, i.e., may be located in the same location or distributed across multiple network blocks. The purpose of the embodiments of the present invention can be achieved by using some or all of the modules in accordance with practical requirements. This is understandable to those skilled in the art and can be accomplished by them without creative effort.

[00258] Accordingly, the present invention also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program for executing any of the random access methods used on the user equipment (UE) side.

[00259] Accordingly, the present invention also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program for executing any of the random access methods applied at the base station side.

[00260] Accordingly, the present invention also provides a random access device. The random access device includes a processor and a memory for storing instructions executed by the processor, wherein the processor is configured to execute any of the random access techniques used on the user equipment (UE) side.

[00261] FIG. 17 is a block diagram showing an electronic device 1700 according to an exemplary embodiment of the present invention. For example, the electronic device 1700 may be a user equipment (UE) such as a mobile phone, a tablet computer, an e-reader, a multimedia player, a wearable device, a vehicle-mounted user equipment, an iPad, and a smart TV.

[00262] As shown in FIG. 17, electronic device 1700 may include one or more of the following components: processing component 1702, memory 1704, power component 1706, multimedia component 1708, audio component 1710, input/output interface 1712, sensor component 1716 and a communication component 1718.

[00263] Processing component 1702 typically controls general operations of electronic device 1700, such as display-related operations, telephone calls, random data access, camera operations, and recording operations. Processing component 1702 may include one or more processors 1720 for executing instructions to perform all or some of the steps of the random access techniques described above. Moreover, processing component 1702 may include one or more modules that provide interaction between processing component 1702 and other components. For example, processing component 1702 may include a media module for providing interaction between multimedia component 1708 and processing component 1702. As another example, processing component 1702 may read executable instructions from memory to implement steps of a random access method provided in the various embodiments of the invention described above.

[00264] Memory 1704 is configured to hold various types of storage

data to support the operation of the electronic device 1700. Examples of such data include instructions for any applications or methods running on the electronic device 1700, contact data, phone book data, messages, images, videos, etc. Memory 1704 may be implemented using any type of volatile or nonvolatile memory or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM, erasable programmable read-only memory), programmable read-only memory (PROM, programmable read-only memory), read-only memory (ROM, read-only memory), magnetic memory, flash memory, magnetic or optical disc.

[00265] Power component 1706 provides power to various components of electronic device 1700. Power component 1706 may include a power management system, one or more power supplies, and any other components associated with generating, managing, and distributing power in electronic device 1700.

[00266] The multimedia component 1708 includes a screen that provides an output interface between the electronic device 1700 and the user. In some embodiments, media component 1708 includes a front camera and/or a rear camera. The front camera and/or rear camera may receive external media data when the electronic device 1700 is in an operating mode, such as a photo mode or a video mode. Each of the front camera and rear camera may be a fixed optical lens system or have focusing and optical zoom capabilities.

[00267] Audio component 1710 is configured to output and/or input audio signals. For example, the audio component 1710 includes a microphone (MIC) configured to receive an external audio signal when the electronic device 1700 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in memory 1704 or transmitted through communication component 1718. In some embodiments, audio component 1710 also includes a speaker for outputting audio signals.

[00268] I/O interface 1712 provides an interface between processing component 1702 and peripheral interface modules such as keyboards, click wheels, buttons, and the like. The buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[00269] Sensor component 1716 includes one or more sensors to provide an assessment of the status of various aspects of electronic device 1700. For example, sensor component 1716 may detect the open/closed state of electronic device 1700, the relative position of components, such as the display and keyboard of electronic device 1700, change the position of the electronic device 1700 or a component of the electronic device 1700, the presence or absence of user contact with the electronic device 1700, the orientation or acceleration/deceleration of the electronic device 1700, and the change in temperature of the electronic device 1700. Sensor component 1716 may include a proximity sensor configured to detect the presence of nearby objects. without any physical contact. Sensor component 1716 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor component 1716 may also include an accelerometer sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[00270] Communications component 1718 is configured as a component that provides wired or wireless communications between electronic device 1700 and other devices. Electronic device 1700 may access a wireless network based on a component standard such as Wi-Fi, 2G, 3G, 4G, 5G, 6G, or a combination thereof. In an exemplary embodiment of the invention, communication component 1718 receives a broadcast signal or broadcast-related information from an external broadcast control system via a broadcast channel. In an exemplary embodiment of the invention, communication component 1718 also includes a near field component (NFC) module for providing short range communications. For example, an NFC module can be implemented based on radio frequency identification technology (RFID, radio frequency identification), infrared data association technology (IrDA, infrared data association), ultra-wideband technology (UWB, ultra-wideband), Bluetooth technology (BT) and other technologies.

[00271] In an illustrative embodiment of the invention, electronic device 1700 may be implemented using one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processors (DSPDs). signal processing device), programmable logic devices (PLD, programmable logic device), field programmable gate arrays (FPGA, field programmable gate array), controllers, microcontrollers, microprocessors or other electronic elements to perform any of the random access methods used on the user side equipment (UE).

[00272] An exemplary embodiment of the invention also provides a computer-readable storage medium including instructions, such as those included in memory 1704, executed by processor 1720 in electronic device 1700, to perform the random access method described above. For example, the computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical storage device, and the like.

[00273] Accordingly, the present invention also provides a random access device. The random access device includes a processor and a memory for storing instructions executed by the processor, wherein the processor is configured to execute any of the random access methods used at the base station side.

[00274] FIG. 18 is a schematic diagram showing a random access device 1800 according to an exemplary embodiment of the present invention. The device 1800 may be provided as a base station. As shown in FIG. 18, device 1800 includes a processing component 1822, a wireless transmit/receive component 1824, an antenna component 1826, and a signal processing portion unique to the wireless interface, and the processing component 1822 may also include one or more processors.

[00275] One of the processing components 1822 may be configured to perform any of the random access methods used on the base station side.

[00276] Other embodiments of the present invention will be apparent to those skilled in the art from consideration of the description and practice of the present invention. The present disclosure is intended to cover any modifications, applications or adaptations of embodiments of the present invention following its general principles, including such deviations from embodiments of the present invention that are known or common practice in the art. The description and examples are intended to be illustrative only, with the scope and spirit of embodiments of the present invention being defined by the claims.

[00277] It should be understood that the embodiments of the present invention are not limited to the exact construction that has been described above and illustrated in the accompanying drawings, and various modifications and changes may be made without departing from the spirit of the invention. It is intended that the scope of the embodiments of the present invention be limited only by the appended claims.

Claims (91)

1. A random access method used in user equipment (UE) and including: receiving resource configuration information, wherein the resource configuration information is configured to configure resources in a given random access resource pool corresponding to the at least one network slice; determining a first random access resource based on the slice information for the target network slice and the resource configuration information, wherein the target network slice is a network slice for initiating the random access UE; And initiating random access based on the first random access resource; wherein there are a plurality of target network slices, and determining the first random access resource based on the slice information for the target network slice and the resource configuration information includes: accepting resources in a given random access resource pool corresponding to one target network slice of the plurality of target network slices as a first random access resource based on the priority order of the plurality of target network slices and resource configuration information. 2. The method of claim 1, wherein determining the first random access resource based on the slice information for the target network slice and the resource configuration information includes at least one of the following: accepting the shared random access resource as a first random access resource in response to the fact that resources in a given random access resource pool corresponding to the target network slice are not configured in the resource configuration information; or accepting resources in a given random access resource pool corresponding to the target network slice as a first random access resource in response to the fact that resources in a given random access resource pool corresponding to the target network slice are configured in the resource configuration information. 3. The method of claim 1, wherein receiving resource configuration information includes one of the following: receiving a system message containing information about resource configuration; receiving a physical downlink control channel (PDCCH) instruction containing resource configuration information; or receiving a radio resource control (RRC) message containing resource configuration information. 4. The method of claim 1, wherein determining the first random access resource based on the slice information for the target network slice and the resource configuration information also includes at least one of the following: determining by the UE a priority order of the plurality of target network slices based on service priorities; or determining a priority order of the plurality of target network slices based on the received first indication message. 5. The method according to claim 1, also including: re-initiating the random access based on the second random access resource that has been rolled back, in response to satisfying a predetermined condition for rollback; wherein the second random access resource is any of the alternative random access resource pools, and the alternative random access resource pools comprise at least one of the following: resources in a given random access resource pool corresponding to other network slices, other random access resources corresponding to the target network slice, or general random access resources; or the second random access resource is a random access resource that is determined based on the received second indication message. 6. The method of claim 5, wherein there are a plurality of resources in a given random access resource pool corresponding to other network slices, and the method also includes one of the following: determining by the UE a priority order of a plurality of resources in a given random access resource pool corresponding to other network slices in a predetermined manner; determining a priority order of a plurality of resources in a given pool of random access resources corresponding to other network slices based on the received third indication message; or determining by the UE a priority order of a plurality of other random access resources corresponding to the target network slice in a predetermined manner; or determining a priority order of a plurality of other random access resources corresponding to the target network slice based on the received fourth indication message; or determining a second random access resource in alternative random access resource pools according to a predetermined priority order of random access resources. 7. The method of claim 5, also comprising one of the following: a second indication message configured to indicate a resource selection index; or a second indication message configured to configure a second random access resource; receiving a random access response message containing a second indication message; or receiving an RRC message containing a second indication message. 8. The method of claim 5, wherein the predetermined condition for rollback includes one of the following: the number of failures when initiating random access based on the first random access resource reaches the first threshold number for fallback; expiration of the first rollback timer; receiving a rollback indication message to a random access resource corresponding to the target network slice; receiving a random access response message containing a rollback indication message to the random access resource; or receiving an RRC message containing a fallback indication message to the random access resource; wherein the resource configuration information is also configured to configure a first rollback threshold quantity and/or a first rollback timer; wherein the rollback indication message to the random access resource is configured to configure a second rollback threshold amount and/or a second rollback timer; wherein the rollback indication message to the random access resource contains a rollback probability value, and re-initiating random access based on the second random access resource that was rolled back includes: rollback in response to a generated random number and rollback probability value And reinitiating the random access based on the second random access resource that was rolled back; wherein the resource configuration information includes a rollback probability value, and re-initiating random access based on the second random access resource that was rolled back includes: rollback in response to a generated random number and rollback probability value And reinitiating random access based on the second random access resource that was rolled back. 9. The method of claim 1, also comprising one of the following: obtaining slice information for the target network slice transmitted by the non-access layer to the access layer, in case the non-access layer requests the access layer to initiate an RRC connection; receiving a paging message containing slice information for the target network slice; receiving a physical downlink control channel (PDCCH) instruction containing slice information for the target network slice; or accepting slice information associated with a logical channel with data to be transmitted as slice information for a target network slice, in response to the logical channel identifier associated with the slice information. 10. Random access method used in the base station and including: determining resource configuration information, wherein the resource configuration information is configured to configure resources in a given random access resource pool corresponding to the at least one network slice; And transmission of information about resource configuration; in this case, the transfer of information about resource configuration includes: transmitting a first indication message, wherein the first indication message is configured to configure a priority order of a plurality of target network slices, and the target network slice is a network slice for the user equipment (UE) to initiate random access; wherein the priority order of the plurality of target network slices and resource configuration information are used by the UE to determine a first random access resource to initiate random access, and the first random access resource represents resources in a given random access resource pool corresponding to one target network slice of the plurality of target network slices slices. 11. The method of claim 10, wherein transmitting resource configuration information also includes one of the following: broadcasting a system message containing resource configuration information; transmitting a physical downlink control channel (PDCCH) instruction containing resource configuration information; or transmitting a radio resource control (RRC) message containing resource configuration information. 12. The method according to claim 10, also including: transmitting a second indication message, wherein the second indication message is configured to determine, by the user equipment (UE), a second random access resource that is used when a fallback to the resource is performed, wherein the second indication message is configured to indicate a resource selection index or to configure a second random access resource, wherein transmission of the second indication message includes one of the following: transmitting a random access response message containing a second indication message; or transmitting an RRC message containing the second indication information. 13. The method of claim 10, also comprising one of the following: transmitting a third indication message, wherein the third indication message is configured to configure a priority order of a plurality of resources in a given random access resource pool corresponding to other network slices other than the target network slice, and the target network slice is a network slice for initiating the random access UE; transmitting a fourth indication message, wherein the fourth indication message is configured to configure a priority order of a plurality of other random access resources corresponding to the target network slice, and the target network slice is a network slice for initiating the random access UE; or transmitting a rollback indication message to the random access resource, wherein transmission of the rollback indication message to the random access resource includes one of the following: transmitting a random access response message containing a rollback indication message to the random access resource; or transmitting an RRC message containing a fallback indication message to the random access resource, wherein the rollback indication message to the random access resource is configured to configure a second rollback threshold amount and/or a second rollback timer; wherein the rollback indication message to the random access resource contains a rollback probability value, wherein the resource configuration information contains the rollback probability value, wherein the method also includes at least one of the following: transmitting a paging message containing slice information for the target network slice; or transmitting a physical downlink control channel (PDCCH) instruction containing slice information for the target network slice. 14. Random access device containing: processor and memory for storing instructions executed by the processor; wherein the processor is configured to execute the random access method according to any one of claims. 1-9. 15. Random access device containing: processor and memory for storing instructions executed by the processor; wherein the processor is configured to execute the random access method according to any one of claims. 10-13.