Methods and apparatus of random access channel configuration in network slicing environment in mobile communications
By extending the paging message with identity information, the UE can determine a slice-specific RACH configuration, addressing the challenge of improper RACH configuration for MT access in network slicing environments, enhancing communication efficiency and quality of service.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-08-21
- Publication Date
- 2026-03-05
AI Technical Summary
In a network slicing environment, user equipment (UE) faces challenges in determining the appropriate random access channel (RACH) configuration for mobile-terminated (MT) access attempts due to a lack of identity information associated with the downlink data, leading to improper RACH configuration.
The paging message is extended to include identity information such as NSAG ID or PDU session ID associated with S-NSSAI, enabling the UE to determine a slice-specific RACH configuration for proper random access prioritization during MT access attempts.
Enables slice-specific random access prioritization for MT access by allowing the UE to apply the appropriate RACH configuration based on identity information, improving communication efficiency and quality of service.
Smart Images

Figure CN2025116159_05032026_PF_FP_ABST
Abstract
Description
METHODS AND APPARATUS OF RANDOM ACCESS CHANNEL CONFIGURATION IN NETWORK SLICING ENVIRONMENT IN MOBILE COMMUNICATIONSCROSS REFERENCE TO RELATED PATENT APPLICATION (S)
[0001] The present disclosure is part of a non-provisional application claiming the priority benefit of U.S. Patent Application No. 63 / 686,898, filed 26 August 2024, the content of which herein being incorporated by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure is generally related to mobile communications and, more particularly, to random access channel (RACH) configuration in a network slicing environment in mobile communications.BACKGROUND
[0003] Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section.
[0004] Fifth generation (5G) network architecture developed by the 3rd generation partnership project (3GPP) supports network slicing. Specifically, a common physical infrastructure can be partitioned into multiple logical network slices. Different network slices can have different supported features and network function optimizations, and thus can be adapted to different use cases. A specific network slice can be identified by a parameter called single-network slice selection assistance information (S-NSSAI) .
[0005] In radio access network (RAN) slicing, a slice-specific RACH configuration, separate RACH partitioning, and RACH prioritization parameters can be configured for each network slice access stratum (AS) group (NSAG) . When a mobile-originated (MO) access attempt is triggered by a specific S-NSSAI associated with an NSAG, the slice-specific RACH configuration is used to ensure proper random access prioritization. More specifically, the NSAG information provided by the network is provided to the lower layers (e.g., radio resource control (RRC) layer) by the UE non-access stratum (NAS) layer. The UE NAS layer shall provide the lower layers with zero or more S-NSSAIs related to an access attempt for the purpose of network slice-based random access, when the access attempt is made by the UE in idle mode (e.g., 5GMM-IDLE mode) or connected mode (e.g., 5GMM-CONNECTED mode) with RRC inactive indication. Then the RRC layer may initiate a procedure to establish an RRC connection when upper layers request establishment of an RRC connection while the UE is in an idle mode (e.g., RRC_IDLE) . Upon initiation of the procedure, if the upper layers provide NSAG information and one or more S-NSSAI (s) triggering the access attempt, the UE may apply the NSAG with the highest NSAG priority among the NSAGs that are included in system information block 1 (SIB1) , and that are associated with the S-NSSAI (s) triggering the access attempt, in the random access procedure.
[0006] However, when a UE receives a paging message for a mobile-terminated (MT) access, it does not know which NSAG is associated with the downlink data. Consequently, the UE is unable to use the proper RACH configuration for the random access procedure. There is a need for a solution for RACH configuration for MT access attempts in the network slicing environment.SUMMARY
[0007] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
[0008] An objective of the present disclosure is to propose solutions or schemes that address the aforementioned issues pertaining to random access channel (RACH) configuration in a network slicing environment in mobile communications.
[0009] In one aspect, a method may involve an apparatus receiving a paging message comprising an identity information associated with a single-network slice selection assistance information (S-NSSAI) . The method may also involve the apparatus determining a RACH configuration based on the identity information.
[0010] In another aspect, an apparatus may comprise a transceiver which, during operation, wirelessly communicates with a network node of a wireless network. The apparatus may also comprise a processor communicatively coupled to the transceiver. The processor, during operation, may perform operations comprising receiving, via the transceiver, a paging message comprising an identity information associated with an S-NSSAI. The processor, during operation, may further perform operations comprising determining a RACH configuration based on the identity information.
[0011] In yet another aspect, a method may involve a network node including an identity information associated with an S-NSSAI into a paging message. The method may also involve the network node transmitting the paging message to a user equipment (UE) .
[0012] It is noteworthy that, although description provided herein may be in the context of certain radio access technologies, networks and network topologies such as Long-Term Evolution (LTE) , LTE-Advanced, LTE-Advanced Pro, 5th Generation (5G) , New Radio (NR) , Internet-of-Things (IoT) and Narrow Band Internet of Things (NB-IoT) , Industrial Internet of Things (IIoT) , and 6th Generation (6G) , the proposed concepts, schemes and any variation (s) / derivative (s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies. Thus, the scope of the present disclosure is not limited to the examples described herein.BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate implementations of the disclosure and, together with the description, serve to explain the principles of the disclosure. It is appreciable that the drawings are not necessarily in scale as some components may be shown to be out of proportion than the size in actual implementation in order to clearly illustrate the concept of the present disclosure.
[0014] FIG. 1 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0015] FIG. 2 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0016] FIG. 3 is a block diagram of an example communication system in accordance with an implementation of the present disclosure.
[0017] FIG. 4 is a flowchart of an example process in accordance with an implementation of the present disclosure.
[0018] FIG. 5 is a flowchart of an example process in accordance with an implementation of the present disclosure. DETAILED DESCRIPTION OF PREFERRED IMPLEMENTATIONS
[0019] Detailed embodiments and implementations of the claimed subject matters are disclosed herein. However, it shall be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matters which may be embodied in various forms. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that description of the present disclosure is thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. In the description below, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations. Overview
[0020] Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and / or solutions pertaining to random access channel (RACH) configuration in a network slicing environment in mobile communications. According to the present disclosure, a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
[0021] FIG. 1 illustrates an example scenario 100 of a communication environment in which various solutions and schemes in accordance with the present disclosure may be implemented. Scenario 100 involves a user equipment (UE) 110 in wireless communication with a wireless network (e.g., an LTE network, a 5G / NR network, an IoT network, or a 6G network) consisting of an access network 120 and a core network 130. The UE 110 may be a smart phone, a wearable device, an IoT device, and a tablet, etc. Alternatively, the UE 110 may be a notebook (NB) or personal computer (PC) inserted or installed with a data card which includes a modem and radio frequency (RF) transceiver (s) to provide the functionality of wireless communication. In one embodiment, the access network 120 is connected to the core network 130 by means of the NG interface, more specifically to a user plane function (UPF) by means of the NG user-plane part (NG-u) , and to an access and mobility management function (AMF) by means of the NG control-plane part (NG-c) . The access network 120 may include a base station (BS) 121, which may be connected to multiple UPFs / AMFs for the purpose of load sharing and redundancy. In addition, the core network may include other entities, such as a session management function (SMF) and a unified data management (UDM) , etc. In some embodiments, the access network 120 may include multiple BSs, each of which may provide communication coverage for a geographic coverage area where communications with the UE 110 is supported.
[0022] In one embodiment, the wireless network in scenario 100 may support network slicing. Specifically, one or more network slices may be grouped and identified through a network slice access stratum (AS) group (NSAG) . This grouping enables the radio access network (RAN) to apply uniform yet granular control over these sets of network slices, thereby facilitating the achievement of differentiated quality of service (QoS) for various slice types. An NSAG is, for example, defined within a tracking area (TA) , used for slice-based cell reselection and / or slice-based RACH configuration. Values of NSAG identities (IDs) associated with different slices or sets of slices shall be unique within a TA, also when slice-based cell reselection and slice-based RACH configuration are both supported in the TA.
[0023] When the UE 110 is in an idle mode, it does not have an active radio connection with the BS 121. To reach the UE 110 for incoming communications, the core network 130 may trigger a process to send a paging message to the BS 121. The UE 110 may receive the paging message broadcast by the BS 121. In the present disclosure, the paging message is extended to include identity information associated with a single-network slice selection assistance information (S-NSSAI) , so that the UE may determine or select an appropriate RACH configuration based on the identity information for the random access procedure. The identity information may be an NSAG ID associated with an S-NSSAI value of downlink data and / or a protocol data unit (PDU) session ID associated with an S-NSSAI value of a PDU session with downlink data. The identity information may be included in a paging record element (e.g., PagingRecord) of the paging message; however, the present disclosure is not limited thereto.
[0024] FIG. 2 is a diagram depicting example scenarios of RACH configuration in a network slicing environment in accordance with implementations of the present disclosure. Scenario 200 involves mobile-terminated (MT) access attempts, where the UE receives a paging message from the network, and the paging message includes identity information associated with an S-NSSAI. The UE may first identify which NSAG is associated with the downlink data based on the identity information in the paging message, and then determine or select a corresponding RACH configuration to properly perform the random access procedure. For example, the UE may determine a slice-specific RACH configuration according to the NSAG ID in the paging message. Alternatively, the UE may first determine an NSAG ID based on the PDU session ID in the paging message, and then determine a slice-specific RACH configuration based on the NSAG ID. After that, the UE may apply the determined RACH configuration to the random access procedure.
[0025] The slice-specific RACH configuration may include one or more RACH prioritization parameters, such as a random access (RA) prioritization for slicing (RA-PrioritizationForSlicing) , an RA prioritization slice information (RA-PrioritizationSliceInfo) , a scaling factor (scalingFactorBI) , and a power ramping step (powerRampingStepHighPriority) . Specifically, the parameter RA-PrioritizationForSlicing is used to configure prioritized random access for slicing. The parameter RA-PrioritizationSliceInfo may correspond to pre-configured parameters and rules for performing random access based on the specific network slice the UE wants to access. The parameter scalingFactorBI is a scaling factor for the backoff indicator (BI) for the prioritized random access procedure, in which value zero corresponds to 0, value dot25 corresponds to 0.25, and so on. The parameter powerRampingStepHighPriority is the power ramping step applied for the prioritized random access procedure.
[0026] After using the appropriate RACH configuration, selected based on identity information in the paging message, for the random access procedure, the UE may initiate a service request procedure to establish or activate a user plane connection.
[0027] To address the challenge of providing slice-specific prioritization for MT access, the paging message is extended. By including identity information associated with a specific S-NSSAI in the paging message, the UE may determine and apply the corresponding slice-specific RACH configuration, thereby enabling slice-specific random access prioritization for MT access attempts. Illustrative Implementations
[0028] FIG. 3 illustrates an example communication system 300 having an example communication apparatus 310 and an example network apparatus 320 in accordance with an implementation of the present disclosure. Each of communication apparatus 310 and network apparatus 320 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to RACH configuration in a network slicing environment in mobile communications, including scenarios / schemes described above as well as process 400 and process 500 described below.
[0029] Communication apparatus 310 may be a part of an electronic apparatus, which may be a UE such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus, or a computing apparatus. For instance, communication apparatus 310 may be implemented in a smartphone, a smartwatch, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer, or a notebook computer. Communication apparatus 310 may also be a part of a machine type apparatus, which may be an IoT, NB-IoT, or IIoT apparatus such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus. For instance, communication apparatus 310 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. Alternatively, communication apparatus 310 may be implemented in the form of one or more integrated-circuit (IC) chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors. Communication apparatus 310 may include at least some of those components shown in FIG. 3 such as a processor 312, for example. Communication apparatus 310 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of communication apparatus 310 are neither shown in FIG. 3 nor described below in the interest of simplicity and brevity.
[0030] Network apparatus 320 may be a part of a network apparatus, which may be a network node such as a satellite, a base station, a small cell, a router, a gateway, or other network element. For instance, network apparatus 320 may be implemented in an eNodeB in an LTE network, in a gNB in a 5G / NR, IoT, NB-IoT or IIoT network or in a satellite or base station in a 6G network. In some example, network apparatus 320 may be implemented in a core network device such as AMF. Alternatively, network apparatus 320 may be implemented in the form of one or more IC chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, or one or more RISC or CISC processors. Network apparatus 320 may include at least some of those components shown in FIG. 3 such as a processor 322, for example. Network apparatus 320 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of network apparatus 320 are neither shown in FIG. 3 nor described below in the interest of simplicity and brevity.
[0031] In one aspect, each of processor 312 and processor 322 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, even though a singular term “aprocessor” is used herein to refer to processor 312 and processor 322, each of processor 312 and processor 322 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure. In another aspect, each of processor 312 and processor 322 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and / or one or more varactors that are configured and arranged to achieve specific purposes in accordance with the present disclosure. In other words, in at least some implementations, each of processor 312 and processor 322 is a special-purpose machine specifically designed, arranged and configured to perform specific tasks including RACH configuration in a network slicing environment in accordance with various implementations of the present disclosure.
[0032] In some implementations, communication apparatus 310 may also include a transceiver 316 coupled to processor 312 and capable of wirelessly transmitting and receiving data. In some implementations, communication apparatus 310 may further include a memory 314 coupled to processor 312 and capable of being accessed by processor 312 and storing data therein. In some implementations, network apparatus 320 may also include a transceiver 326 coupled to processor 322 and capable of wirelessly transmitting and receiving data. In some implementations, network apparatus 320 may further include a memory 324 coupled to processor 322 and capable of being accessed by processor 322 and storing data therein. Accordingly, communication apparatus 310 and network apparatus 320 may wirelessly communicate with each other via transceiver 316 and transceiver 326, respectively.
[0033] To aid better understanding, the following description of the operations, functionalities and capabilities of each of communication apparatus 310 and network apparatus 320 is provided in the context of a mobile communication environment in which communication apparatus 310 is implemented in or as a communication apparatus or a UE and network apparatus 320 is implemented in or as a network node of a communication network. Illustrative Processes
[0034] FIG. 4 illustrates an example process 400 in accordance with an implementation of the present disclosure. Process 400 may be an example implementation of above scenarios / schemes, whether partially or completely, with respect to RACH configuration in a network slicing environment of the present disclosure. Process 400 may represent an aspect of implementation of features of communication apparatus 310. Process 400 may include one or more operations, actions, or functions as illustrated by one or more of blocks 410 to 420. Although illustrated as discrete blocks, various blocks of process 400 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 400 may be executed in the order shown in FIG. 4 or, alternatively, in a different order. Process 400 may be implemented by communication apparatus 310 or any suitable UE or machine type devices. Solely for illustrative purposes and without limitation, process 400 is described below in the context of communication apparatus 310. Process 400 may begin at block 410.
[0035] At block 410, process 400 may involve processor 312 of communication apparatus 310 receiving, via transceiver 316, a paging message comprising an identity information associated with an S-NSSAI. For example, the paging message may be sent from a network node (e.g., network apparatus 320) . Process 400 may proceed from block 410 to block 420.
[0036] At block 420, process 400 may involve processor 312 of communication apparatus 310 determining a RACH configuration based on the identity information.
[0037] In some implementations, the identity information may include an NSAG ID associated with an S-NSSAI value of downlink data.
[0038] In some implementations, the identity information may include a PDU session ID associated with an S-NSSAI value of a PDU session with downlink data.
[0039] In some implementations, process 400 may involve processor 312 of communication apparatus 310 determining an NSAG ID based on the PDU session ID. Process 400 may also involve processor 312 of communication apparatus 310 determining the RACH configuration based on the NSAG ID.
[0040] In some implementations, process 400 may involve processor 312 of communication apparatus 310 applying the determined RACH configuration to a random access procedure.
[0041] In some implementations, the RACH configuration is slice specific.
[0042] In some implementations, the identity information is included in a paging record element of the paging message.
[0043] In some implementations, the RACH configuration includes a RACH prioritization parameter.
[0044] In some implementations, the RACH prioritization parameter may include one or a combination of an RA prioritization for slicing, an RA prioritization slice information, a scaling factor, and a power ramping step.
[0045] FIG. 5 illustrates an example process 500 in accordance with an implementation of the present disclosure. Process 500 may be an example implementation of above scenarios / schemes, whether partially or completely, with respect to RACH configuration in a network slicing environment in mobile communications. Process 500 may represent an aspect of implementation of features of network apparatus 320. Process 500 may include one or more operations, actions, or functions as illustrated by one or more of blocks 510 to 520. Although illustrated as discrete blocks, various blocks of process 500 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 500 may be executed in the order shown in FIG. 5 or, alternatively, in a different order. Process 500 may be implemented by network apparatus 320 or any base stations or network nodes (e.g., AMF) . Solely for illustrative purposes and without limitation, process 500 is described below in the context of network apparatus 320. Process 500 may begin at block 510.
[0046] At block 510, process 500 may involve processor 322 of network apparatus 320 including an identity information associated with an S-NSSAI into a paging message. Process 500 may proceed from block 510 to block 520.
[0047] At block 520, process 500 may involve processor 322 transmitting, via transceiver 326, the paging message to a UE (e.g., the communication apparatus 310) .
[0048] In some implementations, the identity information may include an NSAG ID associated with an S-NSSAI value of downlink data and / or a PDU session ID associated with an S-NSSAI value of a PDU session with downlink data.
[0049] In some implementations, the identity information is included in a paging record element of the paging message. Additional Notes
[0050] The herein-described subject matter sometimes illustrates different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely examples, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected" , or "operably coupled" , to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably couplable" , to each other to achieve the desired functionality. Specific examples of operably couplable include but are not limited to physically mateable and / or physically interacting components and / or wirelessly interactable and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.
[0051] Further, with respect to the use of substantially any plural and / or singular terms herein, those having skill in the art can translate from the plural to the singular and / or from the singular to the plural as is appropriate to the context and / or application. The various singular / plural permutations may be expressly set forth herein for sake of clarity.
[0052] Moreover, it will be understood by those skilled in the art that, in general, terms used herein, and especially in the appended claims, e.g., bodies of the appended claims, are generally intended as “open” terms, e.g., the term “including” should be interpreted as “including but not limited to, ” the term “having” should be interpreted as “having at least, ” the term “includes” should be interpreted as “includes but is not limited to, ” etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to implementations containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an, " e.g., “a” and / or “an” should be interpreted to mean “at least one” or “one or more; ” the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number, e.g., the bare recitation of "two recitations, " without other modifiers, means at least two recitations, or two or more recitations. Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “asystem having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. In those instances where a convention analogous to “at least one of A, B, or C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “asystem having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. It will be further understood by those within the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B. ”
[0053] From the foregoing, it will be appreciated that various implementations of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various implementations disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Claims
1.A method, comprising:receiving, by a processor of an apparatus, a paging message comprising an identity information associated with a single-network slice selection assistance information (S-NSSAI) ; anddetermining, by the processor, a random access channel (RACH) configuration based on the identity information.2.The method of Claim 1, wherein the identity information comprises a network slice access stratum (AS) group (NSAG) identity (ID) associated with an S-NSSAI value of downlink data.3.The method of Claim 1, wherein the identity information comprises a protocol data unit (PDU) session identity (ID) associated with an S-NSSAI value of a PDU session with downlink data.4.The method of Claim 3, wherein the determining of the RACH configuration based on the identity information further comprises:determining a network slice access stratum (AS) group (NSAG) ID based on the PDU session ID;anddetermining the RACH configuration based on the NSAG ID.5.The method of Claim 1, further comprising:applying, by the processor, the determined RACH configuration to a random access procedure.6.The method of Claim 1, wherein the RACH configuration is slice specific.7.The method of Claim 1, wherein the identity information is included in a paging record element of the paging message.8.The method of Claim 1, wherein the RACH configuration comprises a RACH prioritization parameter.9.The method of Claim 8, wherein the RACH prioritization parameter comprises one or a combination of a random access (RA) prioritization for slicing, an RA prioritization slice information, a scaling factor, and a power ramping step.10.An apparatus, comprising:a transceiver which, during operation, communicates wirelessly; anda processor communicatively coupled to the transceiver such that, during operation, the processor performs operations comprising:receiving, via the transceiver, a paging message comprising an identity information associated with a single-network slice selection assistance information (S-NSSAI) ; anddetermining a random access channel (RACH) configuration based on the identity information.11.The apparatus of Claim 10, wherein the identity information comprises a network slice access stratum (AS) group (NSAG) identity (ID) associated with an S-NSSAI value of downlink data.12.The apparatus of Claim 10, wherein the identity information comprises a protocol data unit (PDU) session identity (ID) associated with an S-NSSAI value of a PDU session with downlink data.13.The apparatus of Claim 12, wherein during operation, the processor further performs operations comprising:determining a network slice access stratum (AS) group (NSAG) ID based on the PDU session ID;anddetermining the RACH configuration based on the NSAG ID.14.The apparatus of Claim 10, wherein during operation, the processor further performs operations comprising:applying the determined RACH configuration to a random access procedure.15.The apparatus of Claim 10, wherein the RACH configuration is slice specific.16.The apparatus of Claim 10, wherein the identity information is included in a paging record element of the paging message.17.The apparatus of Claim 10, wherein the RACH configuration comprises a RACH prioritization parameter.18.The apparatus of Claim 17, wherein the RACH prioritization parameter comprises one or a combination of a random access (RA) prioritization for slicing, an RA prioritization slice information, a scaling factor, and a power ramping step.19.A method, comprising:including, by a processor of a network node, an identity information associated with a single-network slice selection assistance information (S-NSSAI) into a paging message; andtransmitting, by the processor, the paging message to a user equipment (UE) .20.The method of Claim 19, wherein:the identity information comprises one or a combination of a network slice access stratum (AS) group (NSAG) identity (ID) associated with an S-NSSAI value of downlink data and a protocol data unit (PDU) session ID associated with an S-NSSAI value of a PDU session with downlink data; orthe identity information is included in a paging record element of the paging message.
Citation Information
Patent Citations
Network slice-specific paging for wireless networks
CN110999437A
Information processing method and device and storage medium
CN117880962A
Paging and Signaling Optimisation
US20230052947A1
Device and method for processing slice-based system access configuration information in wireless communication system
US20230292372A1