CN115715023A

CN115715023A - Random access backspacing method for access network slice and related equipment

Info

Publication number: CN115715023A
Application number: CN202110896968.7A
Authority: CN
Inventors: 杨蓓
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2023-02-24
Also published as: WO2023011082A1

Abstract

The embodiment of the disclosure provides a random access fallback method for an access network slice and related equipment. The method performed by the user equipment comprises: monitoring random access configuration information sent by a base station through broadcasting or signaling; executing a fallback operation according to the random access configuration information, wherein the fallback operation comprises at least one of the following options: from slice-specific 2-step random access back to slice-specific 4-step random access, from slice-specific 2-step random access back to common 2-step random access, from slice-specific 4-step random access back to common 4-step random access, from slice-specific 4-step random access back to common 2-step random access.

Description

Random access backspacing method for access network slice and related equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a random access backoff method applicable to an access network slice, a user equipment, a base station, an electronic device, and a computer-readable storage medium.

Background

3GPP (3 rd Generation Partnership Project) introduced a network slicing Technology in 5G (5 th Generation Mobile Communication Technology, fifth Generation Mobile Communication Technology), and provides differentiated services to users through a sliced quality of service (qos) assurance system.

The 3GPP has standardized work for wireless side slices including defining random access mechanisms based on access network slices. For the initial band Part (BWP), when Slice specific Random Access (Slice specific RA) resources are configured, common Random Access (Common RA) resources are configured at the same time.

However, the existing scheme cannot flexibly configure and select a fallback scheme according to the requirement of an operator/industry client on isolation of slice resources, and a random access fallback method for an access network slice needs to be enhanced.

It should be noted that the information disclosed in the above background section is only used to enhance understanding of the background of the present disclosure.

Disclosure of Invention

The embodiment of the disclosure provides a random access fallback method for an access network slice, user equipment, a base station, electronic equipment and a computer readable storage medium, which can enable the user equipment to execute a suitable random access fallback operation, so that a requirement of an operator/industry client on slice resource isolation can be met.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

According to an aspect of the present disclosure, there is provided a random access fallback method for an access network slice, the method performed by a user equipment, comprising: monitoring random access configuration information sent by a base station through broadcasting or signaling; executing a fallback operation according to the random access configuration information, wherein the fallback operation comprises at least one of the following options: the method comprises the steps of 2-step random access fallback from the exclusive section to 4-step random access of the exclusive section, 2-step random access fallback from the exclusive section to 4-step random access of public, 2-step random access fallback from the exclusive section to 2-step random access of public, 4-step random access fallback from the exclusive section to 4-step random access of public, and 4-step random access fallback from the exclusive section to 2-step random access of public.

In one embodiment of the present disclosure, the random access configuration information includes at least one of the following options: the maximum transmission times of slice-specific 2-step random access backoff, display indication information of slice-specific 2-step random access, random access backoff indication information, and the maximum transmission times of common 2-step random access backoff; wherein the random access backoff indication information may be sent through a random access response, and includes at least one of the following information: and the resource indication information is returned, and the preamble sequence number is randomly accessed.

In one embodiment of the present disclosure, performing a fallback operation according to the random access configuration information includes: if the random access configuration information meets the hard isolation random access rollback condition, returning from 2 steps of random access exclusive to 4 steps of random access exclusive to the slice; and if the random access configuration information meets the soft isolation random access backoff condition, the slice exclusive 2-step random access is backed to the public 4-step random access.

In one embodiment of the present disclosure, the hard-isolation random access backoff condition includes at least one of the following options: the random access configuration information corresponding to the relevant parameters of the user equipment comprises slice-specific 4-step random access resources, and the number of times of attempting random access by the user equipment by using the slice-specific 2-step random access resources is greater than or equal to the maximum transmission number of slice-specific 2-step random access backoff in the random access configuration information corresponding to the relevant parameters of the user equipment or the maximum transmission number of public 2-step random access backoff in the random access configuration information received by the user equipment; the slice-specific 2-step random access configuration information used by the user equipment comprises slice-specific 2-step random access display indication information, and the value of the slice-specific 2-step random access display indication information is True; and the base station indicates the use of the slice exclusive random access resource in the random access back-off indication information sent to the user equipment.

In one embodiment of the present disclosure, the soft barring random access condition includes at least one of the following options: the random access configuration information corresponding to the relevant parameters of the user equipment does not include slice-specific 4-step random access resources, and the number of times of attempting random access by the user equipment using slice-specific 2-step random access resources is greater than or equal to the maximum transmission number of slice-specific 2-step random access backoff in the random access configuration information corresponding to the relevant parameters of the user equipment or the maximum transmission number of public 2-step random access backoff in the random access configuration information received by the user equipment; the number of times of random access attempts of the user equipment by using the slice-specific 2-step random access resource is greater than or equal to the maximum transmission number of public 2-step random access backoff in the random access configuration information received by the user equipment, and the random access configuration information corresponding to the relevant parameters of the user equipment does not include the maximum transmission number of the slice-specific 2-step random access backoff or the maximum transmission number of the slice-specific 2-step random access backoff as an invalid definition; the number of times of the random access attempt of the user equipment by using the slice-specific 2-step random access resource is greater than or equal to the maximum transmission number of the public 2-step random access backoff in the random access configuration information received by the user equipment or the maximum transmission number of the slice-specific 2-step random access backoff in the random access configuration information corresponding to the relevant parameters of the user equipment; the slice-specific 2-step random access configuration information used by the user equipment comprises slice-specific 2-step random access display indication information, and the value of the slice-specific 2-step random access display indication information is False; and the base station indicates the use of the public random access resources in the random access backspacing indication information sent by the user equipment.

In one embodiment of the present disclosure, the related parameter of the user equipment includes at least one of the following information: single network slice selection assistance information, slice groups, no slice related information.

In an embodiment of the present disclosure, the slice group is determined according to any one of the following manners: the core network informs the relation between the single network slice selection auxiliary information and the slice groups to the user equipment through non-access network signaling; using the slice/service type as a slice group; user access control is used as a slice group.

In one embodiment of the present disclosure, the method further comprises: and if the backspacing resource indication information conflicts with other random access configuration information, executing backspacing operation according to the backspacing resource indication information.

According to another aspect of the present disclosure, there is provided a random access fallback method for an access network slice, the method being performed by a base station, including: sending random access configuration information to user equipment through broadcasting or signaling so that the user equipment can execute rollback operation according to the random access configuration information; wherein the rollback operation comprises at least one of the following options: from slice-specific 2-step random access back to slice-specific 4-step random access, from slice-specific 2-step random access back to common 2-step random access, from slice-specific 4-step random access back to common 4-step random access, from slice-specific 4-step random access back to common 2-step random access.

In one embodiment of the present disclosure, sending random access configuration information to a user equipment through broadcasting or signaling includes: broadcasting at least one of the maximum transmission times of slice-specific 2-step random access backoff, the maximum transmission times of public 2-step random access backoff, and display indication information of slice-specific 2-step random access corresponding to the relevant parameters to the user equipment.

In one embodiment of the present disclosure, sending random access configuration information to a user equipment through broadcasting or signaling includes: and sending the random access fallback indication information to the user equipment through a random access response or other signaling.

According to yet another aspect of the present disclosure, there is provided a user equipment including: the information monitoring unit is used for monitoring random access configuration information sent by a base station through broadcasting or signaling; a fallback execution unit, configured to execute a fallback operation according to the random access configuration information, where the fallback operation includes at least one of the following options: from slice-specific 2-step random access back to slice-specific 4-step random access, from slice-specific 2-step random access back to common 2-step random access, from slice-specific 4-step random access back to common 4-step random access, from slice-specific 4-step random access back to common 2-step random access.

According to yet another aspect of the present disclosure, there is provided a base station including: an information sending unit, configured to send random access configuration information to a user equipment through broadcast or signaling, so that the user equipment performs a fallback operation according to the random access configuration information; wherein the rollback operation comprises at least one of the following options: the method comprises the steps of 2-step random access fallback from the exclusive section to 4-step random access of the exclusive section, 2-step random access fallback from the exclusive section to 4-step random access of public, 2-step random access fallback from the exclusive section to 2-step random access of public, 4-step random access fallback from the exclusive section to 4-step random access of public, and 4-step random access fallback from the exclusive section to 2-step random access of public.

According to yet another aspect of the present disclosure, there is provided a computer readable storage medium, having stored thereon a computer program, which when executed by a processor, implements a random access fallback method for an access network slice as described in the above embodiments.

According to still another aspect of the present disclosure, there is provided an electronic device including: one or more processors; a storage configured to store one or more programs that, when executed by the one or more processors, cause the one or more processors to implement a random access fallback method for an access network slice as described in the embodiments above.

In the technical solutions provided in some embodiments of the present disclosure, when a ue performs a backoff on a random access, a backoff operation may be performed according to random access configuration information sent by a base station, and the backoff operation may include at least one of a fallback from a slice-specific 2-step random access to a slice-specific 4-step random access, a fallback from a slice-specific 2-step random access to a common 2-step random access, a fallback from a slice-specific 4-step random access to a common 4-step random access, and a fallback from a slice-specific 4-step random access to a common 2-step random access, so that the ue can flexibly perform a backoff operation according to monitored random access configuration information, thereby implementing soft isolation and hard isolation of a slice-specific random access resource and a common random access resource, the soft isolation reduces fragmentation of the random access resource, the hard isolation satisfies a plurality of requirements of a client on information security and complete isolation of the slice resource, and satisfies a plurality of requirements of the client on a slice resource isolation by a flexible backoff method.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 schematically illustrates a flow diagram of a method for random access fallback of an access network slice according to an embodiment of the present disclosure;

fig. 2 schematically shows a flow diagram of a method of random access fallback for an access network slice according to another embodiment of the present disclosure;

fig. 3 schematically shows a flow diagram of a method of random access fallback for an access network slice according to a further embodiment of the present disclosure;

fig. 4 schematically shows a block diagram of a user equipment according to an embodiment of the present disclosure;

figure 5 schematically shows a block diagram of a base station according to an embodiment of the present disclosure;

fig. 6 schematically shows a block diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the disclosure.

The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

The flowcharts shown in the figures are illustrative only and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

In particular, the processes described below with reference to the flowcharts may be implemented as computer software programs, according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable storage medium, the computer program containing program code for performing the method illustrated by the flow chart.

It should be noted that the computer readable storage medium shown in the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM) or flash Memory), an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer-readable signal medium may include a propagated data signal with computer-readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable storage medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF (Radio Frequency), etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of methods, apparatus, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in the embodiments of the present disclosure may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.

As another aspect, the present application also provides a computer-readable storage medium, which may be included in the electronic device described in the above embodiments; or may be separate and not incorporated into the electronic device. The computer-readable storage medium carries one or more programs that, when executed by one of the electronic devices, cause the electronic device to implement the method as described in the embodiments below. For example, the electronic device may implement the steps shown in fig. 1, 2 or 3.

The 3GPP defines a random access mechanism based on access network slices. However, the existing scheme cannot flexibly configure and select a fallback scheme according to the requirement of an operator/industry client on the isolation of slice resources, and cannot support soft isolation and hard isolation of slice random access resources. Therefore, there is a need for enhancing a random access backoff method for access network slicing.

To solve the above problem, the present disclosure provides a method of random access fallback applicable to a 5G NR access network slice. Fig. 1 schematically illustrates a flow diagram of a random access fallback method for an access network slice according to an embodiment of the present disclosure. The method provided in the embodiment of fig. 1 may be performed by a User Equipment (UE).

As shown in fig. 1, the method provided by the embodiment of the present disclosure may include the following steps.

In step S110, the random access configuration information sent by the base station through broadcasting or signaling is monitored.

The random access configuration information sent by the base station may include at least one of the following options: the chip-specific 2-step random access backoff maximum transmission times MsgA-SliceTransMax, the chip-specific 2-step random access display indication information MsgA-RachIsolation, the random access backoff indication information FallbackIndication, and the common 2-step random access backoff maximum transmission times MsgA-TransMax. And, the fallback indication may be sent with a random access response, which may include at least one of the following information: fallback resource indication information, random access preamble sequence number RAPID.

The method is specifically realized in a way that the base station broadcasts MsgA-SliceTransMax, msgA-RachIsolation and MsgA-TransMax corresponding to the relevant parameters to the UE. The relevant parameters refer to relevant parameters of the UE, and may include at least one of the following information: single Network Slice Selection Assistance Information (Slice S-NSSAI, single Network Slice Selection Assistance Information, which identifies a Network Slice), slice group, no Slice related Information. And if the relevant parameter of the UE is no slice relevant information, the UE can be considered to use the public random access. In an exemplary embodiment, the slice group may be determined by any one of the following: (1) The core network informs the UE of the relation between the S-NSSAI and the slice group through non-access Network (NAS) signaling; (2) Using a Slice/Service type (Slice/Service type, abbreviated as SST) as a Slice group; (3) As the slice group, a user Access Control (UE Access Control, abbreviated as UAC) is used.

In practical application, the UE may determine an expected slice or a slice group or an Access Category according to the service initiated by the terminal itself, and further select a random Access resource for slice Access. For example, 5GC (5G core,5G core network)/OAM (Operation Administration and Maintenance) configures mapping relationship between Access Category and S-NSSAI to UE through NAS message, and the base station broadcasts Physical Random Access Channel (PRACH) for which Access Category the Physical Random Access Channel (PRACH) is configured.

The 3GPP defines in relation to 2-step Random Access (2-step RA for short), configures MsgA-TransMax in a configuration cell of a Common 2-step Random Access (Common 2-step RA for short) resource, and performs fallback in the case where the number of failures in employing 2-step RA exceeds MsgA-TransMax. In the present disclosure, msgA-SliceTransMax and MsgA-RachIsolation corresponding to the relevant parameters may be defined, that is, msgA-SliceTransMax is configured in a configuration cell of Slice-specific 2-step Random Access (Slice specific2-step Random Access, abbreviated as Slice specific2-step RA) resources of a Slice or a Slice group. For example, the base station may define a MsgA-SliceTransMax of 2 or 3 for Slice specific2-step RA resources of a certain access network Slice. In addition, msgA-TransMax in Common RA resource configuration may be used when the base station does not display MsgA-SliceTransMax or has no MsgA-SliceTransMax defined.

And in a Slice specific2-step RA configuration cell of a Slice or a Slice group broadcast by the base station, adding a display indication cell MsgA-RachIsolation for indicating whether Slice specific RA resources are hard isolated from Common RA resources. Specifically, if the MsgA-RachIsolation is True, the Slice specific RA resource is indicated to be adopted; if MsgA-RachIsolation is False, then Common RA resources are indicated.

In addition, the base station may send a fallback indication to the UE through a random access response in a signaling manner. The fallback indication in the fallback indication is used for indicating that the random access resource backs, and when the fallback indication conflicts with the random access configuration information broadcast by the base station, the fallback indication is used as a criterion. This section will be described in detail below and will not be described in excess here.

In step S120, a fallback operation is performed according to the random access configuration information.

Wherein the rollback operation may comprise at least one of the following options: from Slice specific2-step RA back to Slice specific4-step Random Access (Slice specific4-step RA), from Slice specific2-step RA back to Common 4-step Random Access (Common 4-step RA), from Slice specific2-step RA to Common 2-step RA, from Slice specific4-step RA back to Common 4-step RA, from Slice specific4-step RA back to Common 2-step RA.

In an exemplary embodiment, performing the fallback operation according to the random access configuration information may include: if the random access configuration information meets the hard isolation random access backspacing condition, backing from Slice specific2-step RA to Slice specific4-step RA; and if the random access configuration information meets the soft-isolation random access fallback condition, the mobile terminal backs to Common 4-step RA from Slice specific2-step RA.

That is to say, in the random access fallback method for the access network slice provided by the present disclosure, a hard isolation random access fallback mechanism and a soft isolation random access fallback mechanism are defined. When UE adopts Slice specific2-step RA resources to carry out random access and generate backoff, if the hard isolation random access backoff condition is met, adopting Slice specific4-step RA to reinitiate random access, thereby meeting the requirement of operators/industry clients on Slice resource isolation; if the soft isolation random access backoff condition is met, the Common 4-step RA is adopted to reinitiate the random access, thereby effectively reducing the fragmentation of random access resources. Next, hard and soft isolation random access backoff are discussed separately.

Hard isolated random access fallback mechanism

In an exemplary embodiment, the Slice specific2-step RA is rolled back to the Slice specific4-step RA if the random access configuration information satisfies a hard-isolation random access backoff condition, i.e., the Slice specific2-step RA is rolled back to the Slice specific4-step RA if any of the following hard-isolation random access backoff conditions is satisfied.

The first condition is as follows: the random access configuration information corresponding to the relevant parameters of the UE comprises Slice specific4-step RA resources, and the number of times of random access attempts of the UE by using the Slice specific2-step RA resources is greater than or equal to MsgA-SliceTransMax in the random access configuration information corresponding to the relevant parameters of the UE or MsgA-TransMax in the random access configuration information received by the UE.

That is, if the Slice specific2-step RA resource and the Slice specific4-step RA resource are both present in the random access configuration information corresponding to the relevant parameters of the UE, and the number of times that the UE attempts random access using the Slice specific2-step RA resource is greater than or equal to MsgA-Slice transamax, it is determined that the UE can re-initiate random access using the Slice specific4-step RA resource. Or, if the random access configuration information corresponding to the relevant parameters of the UE simultaneously includes the Slice specific2-step RA resource and the Slice specific4-step RA resource, and the number of times that the UE attempts random access using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax, it is determined that the UE can re-initiate random access using the Slice specific4-step RA resource. It should be noted that if there is MsgA-slicotransmax and MsgA-slicotransmax is a valid definition, the determination may be made preferentially using MsgA-slicotransmax. And, in the absence of the MsgA-SliceTransMax or the MsgA-SliceTransMax as a null definition, the determination can be made using MsgA-TransMax.

And a second condition: the Slice specific2-step RA configuration information used by the UE comprises MsgA-RachIsolation and has a value of True.

It has been explained in the foregoing that the MsgA-RachIsolation is used to indicate whether the Slice specific RA resource is hard isolated from the Common RA resource, and if the MsgA-RachIsolation is True, to indicate that the Slice specific RA resource is adopted; if MsgA-RachIsolation is False, then Common RA resources are indicated. Therefore, if the configuration information of the Slice specific2-step RA used by the UE contains the MsgA-RachIsolation with the value of True, the UE is determined to be capable of re-initiating the random access by using the Slice specific4-step RA resource.

And (3) performing a third condition: and the base station indicates to use the Slice specific RA resource in the fallback indication sent by the UE.

As described in the foregoing, the base station may send the fallback indication to the UE through the random access response in a signaling manner. The fallback indication in the fallback indication is used to indicate that the random access resource backs, and then it is determined that the UE can use the Slice specific RA resource to re-initiate the random access when the fallback indication indicates that the Slice specific RA resource is used.

Soft-isolation random access fallback mechanism

In an exemplary embodiment, the Slice specific2-step RA is backed to the Common 4-step RA if the random access configuration information satisfies the soft-isolation random access backoff condition, that is, the Slice specific2-step RA is backed to the Common 4-step RA if any one of the following soft-isolation random access backoff conditions is satisfied.

The first condition is as follows: the random access configuration information corresponding to the relevant parameters of the UE does not comprise Slice specific4-step RA resources, and the number of times of random access attempts by the UE by using the Slice specific2-step RA resources is greater than or equal to MsgA-SliceTransMax in the random access configuration information corresponding to the relevant parameters of the UE or MsgA-TransMax in the random access configuration information received by the UE.

Because the Slice specific4-step RA resource does not exist in the random access configuration information corresponding to the relevant parameters of the UE, the UE is determined to be capable of using the Common 4-step RA resource to reinitiate the random access under the condition that the number of times of the UE using the Slice specific2-step RA resource to try the random access is greater than or equal to MsgA-SliceTransMax. Or, since the Slice specific4-step RA resource does not exist in the random access configuration information corresponding to the related parameter of the UE, when the number of times that the UE attempts random access using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax, it is determined that the UE can re-initiate random access using the Common 4-step RA resource. It should be noted that if there is MsgA-slicotransmax and MsgA-slicotransmax is a valid definition, the determination may be made preferentially using MsgA-slicotransmax. And, in the absence of the MsgA-SliceTransMax or the MsgA-SliceTransMax as a null definition, the determination can be made using MsgA-TransMax.

And a second condition: the number of times that the UE tries to perform random access by using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax in the random access configuration information received by the UE, and the MSsgA-SliceTransMax or MsgA-SliceTransMax is not included in the random access configuration information corresponding to the relevant parameters of the UE.

Under the condition that whether the random access configuration information corresponding to the relevant parameters of the UE comprises Slice specific4-step RA resources or not is uncertain, if the random access configuration information corresponding to the relevant parameters of the UE does not comprise MsgA-SliceTransMax or the MsgA-SliceTransMax is invalid definition, the MsgA-TransMax can be directly used for judgment. And if the number of times of random access attempts of the UE by using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax in the random access configuration information received by the UE, determining that the UE can reinitiate the random access by using the Common 4-step RA resource.

And (3) carrying out a third condition: the number of times of random access attempts of the UE by using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax in the random access configuration information received by the UE.

And under the condition that whether the random access configuration information corresponding to the related parameters of the UE comprises Slice specific4-step RA resources or not is uncertain, judging by directly using MsgA-TransMax. And if the number of times of random access attempts of the UE by using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax in the random access configuration information received by the UE, determining that the UE can reinitiate the random access by using the Common 4-step RA resource.

And (4) condition four: the Slice specific2-step RA configuration information used by the UE includes MsgA-RachIsolation and has a value of False.

It has been explained in the foregoing that the MsgA-RachIsolation is used to indicate whether the Slice specific RA resource is hard isolated from the Common RA resource, and if the MsgA-RachIsolation is True, to indicate that the Slice specific RA resource is adopted; if MsgA-RachIsolation is False, then Common RA resources are indicated. Therefore, if the configuration information of the Slice specific2-step RA used by the UE contains the MsgA-RachIsolation with the value of False, the UE is determined to be capable of using Common 4-step RA resources to reinitiate random access.

And a fifth condition: the base station indicates to use Common RA resources in the fallback indication sent to the UE.

As described in the foregoing, the base station may send the fallback indication to the UE through the random access response in a signaling manner. The fallback indication in the fallback indication is used to indicate that the random access resource performs fallback, and then it is determined that the UE can use the Common 4-step RA resource to re-initiate the random access if the fallback indication indicates that the Common RA resource is used in the fallback indication.

In addition, in the exemplary embodiment, fallback resource identification has a higher priority than the random access configuration information of the target access network slice. That is, when the fallback resource identification conflicts with other random access configuration information, the fallback resource identification is used as a criterion. For example, the fallback resource indication indicates that the Common RA resource is used, but the Slice specific RA resource is obtained according to the analysis of the random access configuration information of the target access network Slice, and in this case, the Common RA resource is determined to be used for initiating the random access based on the fallback resource indication.

In addition, the condition one in the mechanism of hard isolated random access backoff and the conditions one, two and three in the mechanism of soft isolated random access backoff can be regarded as implicit random access backoff, that is, by implicitly indicating whether the Slice specific RA resource is isolated from the Common RA resource, the message load broadcasted by the base station can be significantly saved. The conditions two and three in the hard isolation random access backoff mechanism and the conditions four and five in the soft isolation random access backoff mechanism can be regarded as displaying random access backoff, that is, whether the Slice specific RA resource is isolated from the Common RA resource or not is indicated through displaying, so that the Slice specific RA resource can be more flexibly configured and used according to the load condition, and the utilization rate of the random access resource is improved.

And the base station adds the fallback resource indication in the fallback indication, which is used for flexibly adjusting the use of the random access resource when the Slice specific RA resource or Common RA resource is in shortage, increasing the use flexibility of the network Slice random access resource, improving the random access success rate of the UE, and reducing the access delay.

According to the random access fallback method for the access network Slice, when the UE backs off the random access, the fallback operation can be executed through the random access configuration information sent by the base station, and the fallback operation can include at least one of fallback from Slice specific2-step RA to Slice specific4-step RA, fallback from Slice specific2-step RA to Common 2-step RA, fallback from Slice specific4-step RA to Common 4-step RA, and fallback from Slice specific4-step RA to Common 2-step RA.

And when the UE adopts the Slice specific2-step RA resource to perform random access backoff, determining the target random access resource to be the Slice specific4-step RA resource or the Common 4-step RA resource through random access configuration information sent by the base station so that the UE can use the determined target random access resource to re-initiate random access, wherein MsgA-Slice TransMax and MsgA-RachIsolation are defined in the random access configuration information, and when the Slice specific2-step RA resource is instructed to perform backoff through implicit or displayed configuration, the Slice specific4-step RA resource or the Common 4-step RA resource is used for performing random access, so that soft isolation and hard isolation of the Slice specific RA resource and the Common RA resource are realized, different requirements of different clients on network Slice resource isolation are met, and the flexible configuration requirements of 5G custom made by a provider are met.

Fig. 2 schematically shows a flowchart of a random access fallback method for an access network slice according to another embodiment of the present disclosure. The method provided in the embodiment of fig. 2 may be performed by a base station.

As shown in fig. 2, the method provided by the embodiment of the present disclosure may include the following steps.

Step S210, sending the random access configuration information to the UE through broadcasting or signaling, so that the UE performs a fallback operation according to the random access configuration information.

Wherein the rollback operation may comprise at least one of the following options: from Slice specific2-step RA back to Slice specific4-step RA, from Slice specific2-step RA to Common 2-step RA, from Slice specific4-step RA to Common 4-step RA, from Slice specific4-step RA to Common 2-step RA.

In an exemplary embodiment, the random access configuration information may include at least one of the following options: msgA-SliceTransMax, msgA-RachIsolation, fallbackindication, msgA-TransMax. And, the fallback indication may be sent with a random access response, which may include at least one of the following information: fallback resource identification, RAPID.

In an exemplary embodiment, the sending the random access configuration information to the UE through broadcasting or signaling may include: and broadcasting at least one item of MsgA-SliceTransMax, msgA-TransMax and MsgA-RachIsolation corresponding to the relevant parameters to the UE.

In an exemplary embodiment, the sending the random access configuration information to the UE through broadcasting or signaling may include: and sending fallback indication to the UE through a random access response or other signaling.

The method provided by the embodiment of the present disclosure is illustrated with reference to fig. 3, but the present disclosure is not limited thereto. The method provided by the embodiment of the disclosure can be applied to the technical field of wireless communication and terminals, and particularly relates to 5G evolution and standardization thereof.

Fig. 3 schematically shows a flow diagram of a method for random access fallback for an access network slice according to yet another embodiment of the present disclosure.

As shown in fig. 3, the method provided by the embodiment of the present disclosure may include the following steps.

In step S310, the base station sends random access configuration information to the UE through broadcasting or signaling.

The random access configuration information sent by the base station may include at least one of the following options: msgA-SliceTransMax, msgA-RachIsolation, fallbackindication, msgA-TransMax. And, the fallback indication may be sent through a random access response, which may include at least one of the following information: fallback resource identification, RAPID.

The method is concretely realized in a way that the base station broadcasts MsgA-SliceTransMax, msgA-RachIsolation and MsgA-TransMax corresponding to related parameters to the UE. The relevant parameters refer to relevant parameters of the UE, and may include at least one of the following information: slice S-NSSAI, slice group, no slice related information. And if the relevant parameter of the UE is no slice relevant information, the UE can be considered to use the public random access. Further, the slice group may be determined by any one of the following: (1) The core network informs the UE of the relation between the S-NSSAI and the slice group through NAS signaling; (2) use of SST as a slice group; (3) UAC was used as the slice group.

And in the Slice specific2-step RA configuration cell broadcasted by the base station, adding a display indication cell MsgA-RachIsolation for indicating whether Slice specific RA resources are hard isolated from Common RA resources. In addition, the base station may send a fallback indication to the UE through a random access response in a signaling manner. The fallback indication in the fallback indication is used for indicating the random access resource to perform fallback, and when the fallback indication conflicts with the random access configuration information broadcast by the base station, the fallback indication is used as a standard.

In step S320, the UE receives the random access configuration information sent by the base station, and executes a backoff operation according to the random access configuration information.

Wherein the rollback operation may comprise at least one of the following options: from Slice specific2-step RA back to Slice specific4-step RA, from Slice specific2-step RA back to Common 2-step RA, from Slice specific4-step RA back to Common 4-step RA, from Slice specific4-step RA back to Common 2-step RA.

In addition, in the random access backoff method for access network slices provided by the present disclosure, a hard isolation random access backoff mechanism and a soft isolation random access backoff mechanism are also defined. When the UE adopts Slice specific2-step RA resources to carry out random access backoff, if any one of the conditions of the hard isolation random access backoff conditions is met, adopting Slice specific4-step RA to reinitiate random access; and if any one of the soft isolation random access backspacing conditions is met, re-initiating the random access by using Common 4-step RA.

Wherein the hard-isolation random access fallback condition may include one or more of the following conditions:

the first condition is as follows: the random access configuration information corresponding to the relevant parameters of the UE comprises Slice specific4-step RA resources, and the number of times of random access attempts of the UE by using the Slice specific2-step RA resources is greater than or equal to MsgA-SliceTransMax in the random access configuration information corresponding to the relevant parameters of the UE or MsgA-TransMax in the random access configuration information received by the UE;

and a second condition: the Slice specific2-step RA configuration information used by the UE comprises MsgA-RachIsolation, and the value of the MsgA-RachIsolation is True;

and (3) carrying out a third condition: and the base station indicates to use the Slice specific RA resource in the fallback indication sent by the UE.

And, the soft-isolation random access backoff condition may include one or more of the following conditions:

the first condition is as follows: the random access configuration information corresponding to the relevant parameters of the UE does not comprise Slice specific4-step RA resources, and the number of times of random access attempts of the UE by using the Slice specific2-step RA resources is greater than or equal to MsgA-SliceTransMax in the random access configuration information corresponding to the relevant parameters of the UE or MsgA-TransMax in the random access configuration information received by the UE;

and a second condition: the number of times that the UE tries to perform random access by using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax in the random access configuration information received by the UE, and the MsgA-SliceTransMax or the MsgA-SliceTransMax is not included in the random access configuration information corresponding to the relevant parameters of the UE and is an invalid definition;

and (3) carrying out a third condition: the number of times that the UE tries to carry out random access by using the Slice specific2-step RA resource is more than or equal to MsgA-TransMax in the random access configuration information received by the UE;

and a fourth condition: the Slice specific2-step RA configuration information used by the UE comprises MsgA-RachIsolation, and the value of the MsgA-RachIsolation is False;

Moreover, the condition one in the hard isolation random access backoff mechanism and the conditions one, two and three in the soft isolation random access backoff mechanism can be regarded as implicit random access backoff, that is, by implicitly indicating whether the Slice specific RA resource is isolated from the Common RA resource, the message load broadcasted by the base station can be significantly saved. The conditions two and three in the hard isolation random access backoff mechanism and the conditions four and five in the soft isolation random access backoff mechanism can be regarded as displaying random access backoff, that is, whether the Slice specific RA resource is isolated from the Common RA resource or not is indicated through displaying, so that the Slice specific RA resource can be more flexibly configured and used according to the load condition, and the utilization rate of the random access resource is improved. And the base station adds fallback resource indication in the fallback indication, and is used for flexibly adjusting the use of the random access resource when Slice specific RA resources or Common RA resources are in shortage, increasing the use flexibility of the network Slice random access resource, improving the random access success rate of the UE, and reducing the access time delay. In addition, it may be defined that, when the fallback resource identification conflicts with other random access configuration information, the fallback resource identification is used as a criterion.

Fig. 4 schematically shows a block diagram of a user equipment according to an embodiment of the present disclosure. As shown in fig. 4, the user equipment 400 provided by the embodiment of the present disclosure may include: an information listening unit 410 and a rollback execution unit 420.

The information listening unit 410 may be configured to: monitoring random access configuration information sent by a base station through broadcasting or signaling; the rollback execution unit 420 may be configured to: and executing the rollback operation according to the random access configuration information. Wherein the rollback operation may include at least one of the following options: from Slice specific2-step RA back to Slice specific4-step RA, from Slice specific2-step RA back to Common 2-step RA, from Slice specific4-step RA back to Common 4-step RA, from Slice specific4-step RA back to Common 2-step RA.

In an exemplary embodiment, the rollback execution unit 420 may be configured to: if the random access configuration information meets the hard isolation random access backspacing condition, backing from Slice specific2-step RA to Slice specific4-step RA; and if the random access configuration information meets the soft isolation random access fallback condition, fallback from the Slice specific2-step RA to Common 4-step RA.

In an exemplary embodiment, the rollback execution unit 420 may be configured to: and if any one of the following conditions is met, the Slice specific2-step RA is returned to the Slice specific4-step RA: the random access configuration information corresponding to the relevant parameters of the UE comprises Slice specific4-step RA resources, and the number of times of random access attempts of the UE by using the Slice specific2-step RA resources is greater than or equal to MsgA-SliceTransMax in the random access configuration information corresponding to the relevant parameters of the UE or MsgA-TransMax in the random access configuration information received by the UE; the Slice specific2-step RA configuration information used by the UE comprises MsgA-RachIsolation, and the value is True; and the base station indicates to use the Slice specific RA resource in the fallback indication sent by the UE.

In an exemplary embodiment, the rollback execution unit 420 may be configured to: and if any one of the following conditions is met, backing back from the Slice specific2-step RA to Common 4-step RA: the random access configuration information corresponding to the relevant parameters of the UE does not comprise Slice specific4-step RA resources, and the number of times of random access attempts of the UE by using the Slice specific2-step RA resources is greater than or equal to MsgA-SliceTransMax in the random access configuration information corresponding to the relevant parameters of the UE or MsgA-TransMax in the random access configuration information received by the UE; the number of times that the UE tries to perform random access by using the Slice specific2-step RA resource is greater than or equal to MsgA-TransMax in the random access configuration information received by the UE, and the MsgA-SliceTransMax or the MsgA-SliceTransMax is not included in the random access configuration information corresponding to the relevant parameters of the UE and is an invalid definition; the number of times that the UE tries to carry out random access by using the Slice specific2-step RA resource is more than or equal to MsgA-TransMax in the random access configuration information received by the UE; the Slice specific2-step RA configuration information used by the UE comprises MsgA-RachIsolation, and the value of the MsgA-RachIsolation is False; the base station indicates to use Common RA resources in the fallback indication sent to the UE.

In an exemplary embodiment, the rollback execution unit 420 may be configured to: and if the fallback indication conflicts with other random access configuration information, executing the fallback operation according to the fallback indication.

The specific implementation of each unit in the user equipment provided in the embodiment of the present disclosure may refer to the content in the random access resource selection method for the access network slice, which is not described herein again.

Fig. 5 schematically shows a block diagram of a base station according to an embodiment of the present disclosure. As shown in fig. 5, a base station 500 provided in the embodiments of the present disclosure may include: an information transmission unit 510.

The information sending unit 510 may be configured to: and sending the random access configuration information to the UE through broadcasting or signaling so that the UE can execute the rollback operation according to the random access configuration information. Wherein the rollback operation may comprise at least one of the following options: from Slice specific2-step RA back to Slice specific4-step RA, from Slice specific2-step RA back to Common 2-step RA, from Slice specific4-step RA back to Common 4-step RA, from Slice specific4-step RA back to Common 2-step RA.

In an exemplary embodiment, the random access configuration information may include at least one of the following options: msgA-SliceTransMax, msgA-RachIsolation, fallbackindication, msgA-TransMax. And, the fallback indication may be sent through a random access response, which may include at least one of the following information: fallback resource identification, RAPID.

In an exemplary embodiment, the information sending unit 510 may be configured to: and broadcasting at least one item of the MsgA-SliceTransMax, the MsgA-TransMax and the MsgA-RachIsolation corresponding to the relevant parameters to the UE.

In an exemplary embodiment, the information sending unit 510 may be configured to: and sending fallback indication to the UE through a random access response or other signaling.

The specific implementation of each unit in the base station provided in the embodiment of the present disclosure may refer to the content in the random access resource selection method for the access network slice, which is not described herein again.

Referring now to FIG. 6, shown is a schematic diagram of an electronic device suitable for use in implementing embodiments of the present disclosure. The electronic device shown in fig. 6 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure. The electronic device in fig. 6 may be, for example, a user device and/or a network device, but the present disclosure is not limited thereto.

Referring to fig. 6, an electronic device provided in an embodiment of the present disclosure may include: a processor 101, a communication interface 102, a memory 103, and a communication bus 104.

Wherein the processor 101, the communication interface 102 and the memory 103 communicate with each other via a communication bus 104.

Alternatively, the communication interface 102 may be an interface of a communication module, such as an interface of a GSM (Global System for Mobile communications) module. The processor 101 is used to execute programs. The memory 103 is used for storing programs. The program may comprise a computer program comprising computer operating instructions.

The processor 101 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits configured to implement embodiments of the present disclosure.

The memory 103 may include a Random Access Memory (RAM) memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

Among them, the procedure can be specifically used for: monitoring random access configuration information sent by a base station through broadcasting or signaling; and executing the rollback operation according to the random access configuration information. Wherein the rollback operation may comprise at least one of the following options: from Slice specific2-step RA back to Slice specific4-step RA, from Slice specific2-step RA to Common 2-step RA, from Slice specific4-step RA to Common 4-step RA, from Slice specific4-step RA to Common 2-step RA.

Alternatively, the program may be specifically for: and sending the random access configuration information to the UE through broadcasting or signaling so that the UE can execute the rollback operation according to the random access configuration information. Wherein the rollback operation may include at least one of the following options: from Slice specific2-step RA back to Slice specific4-step RA, from Slice specific2-step RA to Common 2-step RA, from Slice specific4-step RA to Common 4-step RA, from Slice specific4-step RA to Common 2-step RA.

It should be noted that although in the above detailed description several units of the device for action execution are mentioned, this division is not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, in accordance with embodiments of the present disclosure. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A random access fallback method for an access network slice, the method being performed by a user equipment and comprising:

monitoring random access configuration information sent by a base station through broadcasting or signaling;

executing a fallback operation according to the random access configuration information, wherein the fallback operation comprises at least one of the following options: from slice-specific 2-step random access back to slice-specific 4-step random access, from slice-specific 2-step random access back to common 2-step random access, from slice-specific 4-step random access back to common 4-step random access, from slice-specific 4-step random access back to common 2-step random access.

2. The method of claim 1, wherein the random access configuration information comprises at least one of the following options: the maximum transmission times of slice-specific 2-step random access backoff, display indication information of slice-specific 2-step random access, random access backoff indication information, and the maximum transmission times of common 2-step random access backoff; wherein the random access backoff indication information may be sent through a random access response, and includes at least one of the following information: and the resource indication information is returned, and the preamble sequence number is randomly accessed.

3. The method of claim 1, wherein performing a fallback operation according to the random access configuration information comprises:

if the random access configuration information meets the hard isolation random access rollback condition, returning from 2 steps of random access exclusive to 4 steps of random access exclusive to the slice;

and if the random access configuration information meets the soft isolation random access fallback condition, the slice exclusive 2-step random access is reverted to the public 4-step random access.

4. The method of claim 3, wherein the hard-isolation random access backoff condition comprises at least one of: the random access configuration information corresponding to the relevant parameters of the user equipment comprises slice-specific 4-step random access resources, and the number of times of attempting random access by the user equipment by using the slice-specific 2-step random access resources is greater than or equal to the maximum transmission number of slice-specific 2-step random access backoff in the random access configuration information corresponding to the relevant parameters of the user equipment or the maximum transmission number of public 2-step random access backoff in the random access configuration information received by the user equipment;

the slice-specific 2-step random access configuration information used by the user equipment comprises slice-specific 2-step random access display indication information, and the value of the slice-specific 2-step random access display indication information is True;

and the base station indicates the use of the exclusive random access resource of the slice to the random access back-off indication information sent by the user equipment.

5. The method of claim 3, wherein the soft-isolation random access backoff condition comprises at least one of:

the random access configuration information corresponding to the relevant parameters of the user equipment does not include slice-specific 4-step random access resources, and the number of times of attempting random access by the user equipment using slice-specific 2-step random access resources is greater than or equal to the maximum transmission number of slice-specific 2-step random access backoff in the random access configuration information corresponding to the relevant parameters of the user equipment or the maximum transmission number of public 2-step random access backoff in the random access configuration information received by the user equipment;

the number of times of the user equipment trying to perform random access by using the slice-specific 2-step random access resource is greater than or equal to the maximum transmission number of the public 2-step random access backoff in the random access configuration information received by the user equipment, and the random access configuration information corresponding to the relevant parameters of the user equipment does not include the maximum transmission number of the slice-specific 2-step random access backoff or the maximum transmission number of the slice-specific 2-step random access backoff as an invalid definition;

the number of times of the random access attempt of the user equipment by using the slice-specific 2-step random access resource is greater than or equal to the maximum transmission number of the public 2-step random access backoff in the random access configuration information received by the user equipment or the maximum transmission number of the slice-specific 2-step random access backoff in the random access configuration information corresponding to the relevant parameters of the user equipment;

the slice-specific 2-step random access configuration information used by the user equipment comprises slice-specific 2-step random access display indication information, and the value of the slice-specific 2-step random access display indication information is False;

and the base station indicates the use of the public random access resources in the random access backspacing indication information sent by the user equipment.

6. The method according to claim 4 or 5, wherein the related parameters of the UE comprise at least one of the following information: single network slice selection assistance information, slice groups, no slice related information.

7. The method of claim 6, wherein the slice group is determined by any one of: the core network informs the relation between the single network slice selection auxiliary information and the slice groups to the user equipment through non-access network signaling; using the slice/service type as a slice group; user access control is used as a slice group.

8. The method of any of claims 2 to 5, further comprising:

and if the backspacing resource indication information conflicts with other random access configuration information, executing backspacing operation according to the backspacing resource indication information.

9. A random access backoff method for access network slicing, the method being performed by a base station and comprising:

sending random access configuration information to user equipment through broadcasting or signaling so that the user equipment can execute rollback operation according to the random access configuration information;

wherein the rollback operation comprises at least one of the following options: from slice-specific 2-step random access back to slice-specific 4-step random access, from slice-specific 2-step random access back to common 2-step random access, from slice-specific 4-step random access back to common 4-step random access, from slice-specific 4-step random access back to common 2-step random access.

10. The method of claim 9, wherein the random access configuration information comprises at least one of the following options: the maximum transmission times of slice-specific 2-step random access backoff, display indication information of slice-specific 2-step random access, random access backoff indication information, and the maximum transmission times of common 2-step random access backoff; wherein the random access backoff indication information may be sent through a random access response, and includes at least one of the following information: and the resource indication information is returned, and the preamble sequence number is randomly accessed.

11. The method of claim 10, wherein sending the random access configuration information to the ue through broadcasting or signaling comprises:

and broadcasting at least one of the maximum transmission times of the slice-specific 2-step random access backoff, the maximum transmission times of the public 2-step random access backoff and the display indication information of the slice-specific 2-step random access corresponding to the relevant parameters to the user equipment.

12. The method of claim 10, wherein sending the random access configuration information to the ue through broadcasting or signaling comprises:

and sending the random access fallback indication information to the user equipment through a random access response or other signaling.

13. A user device, comprising:

the information monitoring unit is used for monitoring random access configuration information sent by a base station through broadcasting or signaling;

a fallback execution unit, configured to execute a fallback operation according to the random access configuration information, where the fallback operation includes at least one of the following options: from slice-specific 2-step random access back to slice-specific 4-step random access, from slice-specific 2-step random access back to common 2-step random access, from slice-specific 4-step random access back to common 4-step random access, from slice-specific 4-step random access back to common 2-step random access.

14. A base station, comprising:

an information sending unit, configured to send random access configuration information to a user equipment through broadcast or signaling, so that the user equipment performs a fallback operation according to the random access configuration information;

15. An electronic device, comprising:

one or more processors;

a storage device configured to store one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the method of any of claims 1 to 8 or the method of any of claims 9 to 12.

16. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 8 or the method of any one of claims 9 to 12.