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WO2024123103A1 - Équipement utilisateur pour rapporter des caractéristiques d'accès aléatoire et procédé associé - Google Patents

Équipement utilisateur pour rapporter des caractéristiques d'accès aléatoire et procédé associé Download PDF

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Publication number
WO2024123103A1
WO2024123103A1 PCT/KR2023/020090 KR2023020090W WO2024123103A1 WO 2024123103 A1 WO2024123103 A1 WO 2024123103A1 KR 2023020090 W KR2023020090 W KR 2023020090W WO 2024123103 A1 WO2024123103 A1 WO 2024123103A1
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Prior art keywords
random access
nsag
feature
report
features
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English (en)
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Aby Kanneath ABRAHAM
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • the present disclosure relates to the field of wireless communication and more specifically, to user equipment for reporting random access features and a method thereof.
  • Fifth generation (5G) mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in "Sub 6 gigahertz (GHz)” bands such as 3.5GHz, but also in “Above 6GHz” bands referred to as millimeter wave (mmWave) including 28GHz and 39GHz.
  • GHz sub 6 gigahertz
  • mmWave millimeter wave
  • 6G mobile communication technologies referred to as Beyond 5G systems
  • THz terahertz
  • V2X Vehicle-to-everything
  • NR-U New Radio Unlicensed
  • UE user equipment
  • NTN Non-Terrestrial Network
  • IIoT Industrial Internet of Things
  • IAB Integrated Access and Backhaul
  • DAPS Dual Active Protocol Stack
  • RACH random access channel
  • 5G baseline architecture for example, service based architecture or service based interface
  • NFV Network Functions Virtualization
  • SDN Software-Defined Networking
  • MEC Mobile Edge Computing
  • multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using Orbital Angular Momentum (OAM), and Reconfigurable Intelligent Surface (RIS), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and Artificial Intelligence (AI) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.
  • FD-MIMO Full Dimensional MIMO
  • OFAM Orbital Angular Momentum
  • RIS Reconfigurable Intelligent Surface
  • AI-based communication technology for implementing system optimization by utilizing satellites and Artificial Intelligence (AI) from the design stage and internalizing end-to-end AI support functions
  • random access (RA) process is performed to achieve uplink (UL) time synchronization between a User Equipment (UE) and a base station. More specifically, RA process is performed during initial access to the base station, handover of the UE, radio resource control (RRC) connection re-establishment procedure, scheduling request transmission, secondary cell group (SCG) addition/modification, beam failure recovery, data or control information transmission in UL by non-synchronized UE in RRC CONNECTED state and the like.
  • RRC radio resource control
  • SCG secondary cell group
  • beam failure recovery data or control information transmission in UL by non-synchronized UE in RRC CONNECTED state and the like.
  • Radio parameters are used in Next Generation Radio Network (NG-RAN) for allocating resources to the UE during the random access process.
  • NG-RAN Next Generation Radio Network
  • manual techniques like drive tests are used.
  • such manual identification of radio parameters is a costly operation since it depends on a lot of factors like the number of users, number of neighbors, maximum throughput in the cell, average throughput in the cell and the like.
  • SON Self-Organizing Networks
  • the present disclosure relates to wireless communication systems and, more specifically, the invention relates to handling user equipment during unavailability period in wireless network.
  • a method by a user equipment (UE) (104) for reporting random access features comprising; identifying a first feature triggering a random access procedure, performing the random access procedure based on a random access resource associated with a second feature, generating a report including information related to the first feature and information related to the second feature, and transmitting, the report to a base station (108), wherein the information related to the first feature and the information related to the second feature respectively include information related to at least one of a reduced capability (RedCap), a small data transmission (SDT), a network slice AS group (NSAG), or msg3 repetitions.
  • RedCap reduced capability
  • SDT small data transmission
  • NSAG network slice AS group
  • a user equipment (UE) (104) for reporting random access features comprises: a processor (202), and a memory (204), wherein the memory stores processor-executable instructions (205), which, on execution, cause the processor (202) to, identify a first feature triggering a random access procedure, perform the random access procedure based on a random access resource associated with a second feature, generate a report including information related to the first feature and information related to the second feature, and transmit, the report to a base station (108), wherein the information related to the first feature and the information related to the second feature respectively include information related to at least one of a reduced capability (RedCap), a small data transmission (SDT), a network slice AS group (NSAG), or msg3 repetitions.
  • RedCap reduced capability
  • SDT small data transmission
  • NSAG network slice AS group
  • FIG. 1 illustrates an exemplary representation of an environment related to wireless communication, in which some embodiments of the present disclosure may be implemented
  • FIG. 2 illustrates a User Equipment (UE) for reporting random access features, in accordance with an embodiment of the present disclosure
  • FIG. 3 illustrates a sequence flow of a method to report random access features, in accordance with an embodiment of the present disclosure
  • FIG. 4 illustrates a flow chart of a method for reporting random access features, in accordance with another embodiment of the present disclosure.
  • FIG. 5 illustrates flow chart of a method for reporting random access features, in accordance with an embodiment of the present disclosure.
  • the disclosure uses terms and names defined in the 3rd Generation Partnership Project Radio Access Network (3GPP RAN) standards. More specifically, the terms 'random access', 'RACH', 'RRC_IDLE', 'RRC_Inactive', 'RRC_CONNECTED', 'Secondary cell addition', 'handover', 'beam failure recovery', 'synchronous reconfiguration', 'Downlink (DL)', 'Uplink (UL)', 'Scheduling Request(SR)', 'RSRP', 'msg3', 'RedCap', "NSAG', and 'NSAG ID' to be interpreted as specified by the 3GPP RAN standards.
  • 3GPP RAN 3rd Generation Partnership Project Radio Access Network
  • FIG. 1 illustrates an exemplary representation of an environment 100 related to wireless communication, in which some embodiments of the present disclosure may be implemented.
  • the environment 100 exemplarily depicts a user 102 associated with a User Equipment (UE) 104.
  • the user 102 may access content on the UE 104.
  • the UE 104 may include, but not limited to, electronic devices such as, a smartphone, a laptop, a desktop, a personal computer, or any spatial computing device capable of performing wireless communication.
  • the UE 104 may work on multiple platforms and/or Operating Systems to perform different operations related to wireless communication.
  • the UE 104 may initiate a connection with a base station 108 for a plurality of conditions.
  • the plurality of conditions related to the UE 104 may be initial access of the base station 108 from RRC_IDLE, transition from RRC_Inactive to RRC_CONNECTED, RRC connection re-establishment, handover, beam failure recovery, synchronous reconfiguration, timing alignment during Secondary cell (Scell) addition, Downlink (DL) out of sync, Uplink (UL) out of sync, Scheduling Request(SR) max transmission reached, UL data arrival and on demand system information.
  • Scell Secondary cell
  • DL Downlink
  • UL Uplink
  • Scheduling Request(SR) max transmission reached UL data arrival and on demand system information.
  • the plurality of conditions mentioned hereinabove are for exemplary purposes and the UE 104 may establish connection with the base station 108 based on other conditions.
  • the UE 104 may establish connection with the base station 108 via a communication network 106. It is understood that the UE 104 may be in operative communication with the communication network 106, such as the Internet, enabled by a network provider, also known as an Internet Service Provider (ISP). The UE 104 may be connected to the communication network 106 using a wireless network. Some non-limiting examples of wireless networks may include the Wireless LAN (WLAN), cellular networks, Bluetooth or ZigBee networks, and the like.
  • Various embodiments of the present disclosure disclose a method performed by the UE 104 for reporting random access features to the base station 108. More specifically, the UE 104 triggers random access process by one or more first features for establishing a connection with the base station 108. Further, the UE 104 performs the random access process based on the one or more first features using the one or more second features. The UE 104 reports the one or more first features and the one or more second features to the base station 108. The operations performed by the UE 104 are explained in detail next with reference to FIG. 2.
  • the term 'random access features' as used herein refer to parameters that facilitate random access process for establishing connection between the UE 104 and the base station 108. More specifically, one or more first features trigger the UE 104 to perform the random access process while establishing a connection with the base station 108 or while being connected with the base station 108. Some examples of the one or more first features include, but not limited to, a Reduced Capability (RedCap), a Small Data Transmission (SDT), one or more Slicing/Network Slice AS Groups (NSAGs), a third message (msg3) repetition and the like.
  • RedCap Reduced Capability
  • SDT Small Data Transmission
  • NSAGs Slicing/Network Slice AS Groups
  • msg3 third message repetition and the like.
  • the one or more first features may include a combination of features, for example, the combination of features may include RedCap and SDT, RedCap, SDT and msg3 repetition, and the like.
  • the one or more features may be one or more NSAGs.
  • the one or more first features may include SDT.
  • the one or more first features are also interchangeably referred to as "triggered features" in the present disclosure. It shall be noted that more than one first feature may trigger the random access process.
  • the random access process may be performed by one or more second features.
  • the one or more second features are accessed from available random access resources for the UE 104.
  • the available random access resources may include resources which are common, feature specific, and feature combination specific.
  • random access resources specific to a feature for example, RedCap
  • feature specific resource random access resources specific to a feature
  • random access resources allocated to feature combinations for example, resources allocated to feature combinations such as, RedCap and SDT
  • feature combination specific resources are referred to as feature combination specific resources.
  • the resources used by the UE 104 to perform the random access are referred to as the one or more second features.
  • the resources may include the time and frequency resources used for performing random access.
  • the resource may also include the various parameters for performing the random access process.
  • the one or more second features may include, but not limited to, a RedCap, an SDT, one or more NSAGs, a msg3 repetition, common/shared resources and the like.
  • the triggered features include RedCap and SDT
  • the used features can be RedCap and SDT if the features are a part of the available random access resources.
  • the triggered features is RedCap and the available random access resources is a combination of SDT and RedCap, then the used features are SDT and RedCap.
  • FIG. 2 illustrates the UE 104 for reporting random access features, in accordance with an embodiment of the present disclosure.
  • the UE 104 may establish a connection with the base station 108 for accessing content. As such, the UE 104 may trigger the random access process.
  • the UE 104 comprises a processor 202, a memory 204, an input/output module 206 and a communication interface (or transceiver) 208. It shall be noted that, in some embodiments, the UE 104 may include more or fewer components than those depicted herein. The various components of the UE 104 may be implemented using hardware, software, firmware or any combinations thereof. Further, the various components of the UE 104 may be operably coupled with each other. More specifically, various components of the UE 104 may be capable of communicating with each other using communication channel media (such as buses, interconnects, etc.).
  • communication channel media such as buses, interconnects, etc.
  • the processor 202 may be embodied as a multi-core processor, a single core processor, or a combination of one or more multi-core processors and one or more single core processors.
  • the processor 202 may be embodied as one or more of various processing devices, such as a coprocessor, a microprocessor, a controller, a digital signal processor (DSP), a processing circuitry with or without an accompanying DSP, or various other processing devices including, a microcontroller unit (MCU), a hardware accelerator, a special-purpose computer chip, or the like.
  • the processor 202 is configured to: (1) trigger a random access process, (2) perform the random access process based on the one or more first features using one or more second features, (3) identify the one or more first features that triggered the random access process, (4) determine one or more NSAG IDs corresponding to one or more NSAGs when the one or more NSAGs is the one or more first features, (5) indicate a NSAG ID associated with the NSAG in a report, and (4) generate a report comprising the one or more first features and the one or more second features.
  • the memory 204 is capable of storing machine executable instructions, referred to herein as instructions 205.
  • the processor 202 is embodied as an executor of software instructions. As such, the processor 202 is capable of executing the instructions 205 stored in the memory 204 to perform one or more operations described herein.
  • the memory 204 is also capable of storing UE capability information, historical reports, network configuration information, information related to base stations previously connected to, and the like.
  • the memory 204 can be any type of storage accessible to the processor 202 to perform respective functionalities.
  • the memory 204 may include one or more volatile or non-volatile memories, or a combination thereof.
  • the memory 204 may be embodied as semiconductor memories, such as flash memory, mask ROM, PROM (programmable ROM), EPROM (erasable PROM), RAM (random access memory), etc. and the like.
  • the I/O module 206 may include mechanisms configured to receive inputs from and provide outputs to operator of the UE 104, the user 102. To enable reception of inputs and provide outputs from the UE 104, the I/O module 206 may include at least one input interface and/or at least one output interface. Some examples of the input interface may include, but are not limited to, a keyboard, a mouse, a joystick, a keypad, a touch screen, soft keys, a microphone, and the like.
  • Examples of the output interface may include, but are not limited to, a display such as a light emitting diode display, a thin-film transistor (TFT) display, a liquid crystal display, an active-matrix organic light-emitting diode (AMOLED) display, a microphone, a speaker, a ringer, and the like.
  • a display such as a light emitting diode display, a thin-film transistor (TFT) display, a liquid crystal display, an active-matrix organic light-emitting diode (AMOLED) display, a microphone, a speaker, a ringer, and the like.
  • TFT thin-film transistor
  • AMOLED active-matrix organic light-emitting diode
  • the communication interface 208 may include mechanisms configured to communicate with other entities in the environment 100, for example, the base station 108.
  • the UE 104 may initiate establishing a connection with the base station 108 by means of random access process via the communication interface 208. More specifically, the UE 104 triggers the random access process by the one or more first features.
  • the processor 202 is configured to identify these one or more first features which triggered the random access process and generate a report along with the one or more second features. The report is transmitted by the processor 202 to the base station 108 via the communication interface 208. Generating the report based on monitoring and identifying the one or more first features and the one or more second features is explained next with reference to FIG. 3 .
  • FIG. 3 illustrates a sequence flow of a method 300 to report random access features, in accordance with an embodiment of the present disclosure.
  • the UE 104 triggers a random access process.
  • the random access process may be triggered due to reasons such as, but not limited to, an initial access of the UE 104 from RRC_IDLE, transition of the UE 104 from RRC_Inactive to RRC_CONNECTED, RRC connection re-establishment by the UE 104, handover of the UE 104, beam failure recovery, synchronous reconfiguration, timing alignment during Scell addition for the UE 104, Downlink (DL) out of sync for the UE 104, Uplink (UL) out of sync for the UE 104, SR max transmission reached, UL data arrival from the UE 104, on demand system information and the like.
  • DL Downlink
  • UL Uplink
  • SR max transmission reached UL data arrival from the UE 104
  • the UE 104 performs the random access process.
  • the UE 104 performs the random access process based on the one or more first features using the one or more second features.
  • Some examples of the one or more second features may include, but not limited to, a RedCap, a SDT, one or more NSAGs, a msg3 repetition, common resources and the like.
  • the triggered features include RedCap and SDT
  • the used features may be RedCap and SDT, if the features are a part of available random access resources.
  • the triggered features are RedCap and SDT but the available random access resources is NSAG, the used feature is NSAG.
  • the triggered features is RedCap and the available random access resources is a common resource which has not been allocated for any specific feature, then the used features are common features in the available random access resources.
  • the UE 104 identifies the one or more first features.
  • the one or more first features refer to the random access features that triggered the random access process.
  • the one or more first features that triggered the random access process is identified based on one or more random access parameters.
  • the one or more random access parameters comprise UE capabilities, data size, application accessed and Reference Signal Received Power (RSRP).
  • RSRP Reference Signal Received Power
  • the one or more random access parameters are monitored to identify the one or more first features that triggered the random access process. For example, the RedCap feature indication in the UE capability, the data size, application accessed and the RSRP are monitored continuously to determine the one or more first feature that triggered the random access process.
  • the UE 104 may be configured to store the one or more identified features.
  • the base station 108 requests a report. It shall be noted that the report may be requested anytime within a predefined time period. As such, the UE 104 is configured to store the report for the predefined time period in the memory 204. In an example, the predefined time period may be 48 hours.
  • the report includes the random access features that triggered the random access process. More specifically, the random access features may include, the one or more first features and the one or more second features. In an embodiment, the one or more first features and the one or more second features are: RedCap, SDT, msg3 repetition and one or more NSAGs. More specifically, the one or more first features that triggered the random access process for establishing a connection with the base station 108 and the one or more second features that were used to perform the random access process need to be reported to the base station 108.
  • the one or more first features is identified as RedCap when the UE capabilities comprise a RedCap feature indication. More specifically, if the UE is a reduced capability device, i.e. supports RedCap then the RedCap feature indication may be enabled.
  • the one or more first features that triggered the random access process may be identified as SDT when the data size is less than a data threshold. For example, if the data threshold is 50kB and the user wants to send an image of 20kB to another user, the one or more first feature triggered is SDT as the data size of the image is less than the data threshold.
  • the threshold may be provided by the network.
  • the one or more first features that triggered the random access process may be identified as the one or more NSAGs when applications are accessed.
  • UE may be allocated with different slices corresponding to different applications and provided with different slice identifiers such as S-NSSAI.
  • Multiple slices may be grouped together into a Network Slice Access Stratum Group (NSAG)For example, when the user 102 tries to access multiple applications such as Google®, Facebook ®, etc. and different slices are provided for those applications, on the UE 104, the one or more NSAGs is identified as the one or more first features.
  • the one or more first features is identified as msg3 repetition when the RSRP is less than a RSRP threshold provided by the network.
  • UE may perform msg3 repetition and the one or more first features that triggered the random access process is identified as msg3 repetition.
  • a report comprising the one or more first features and one or more second features is sent to the base station 108.
  • the one or more second features are determined based on the used features from the available random access resources.
  • the available random access resources may include resources which are common, feature specific, and feature combination specific. For example, random access resources specific to a feature, for example, RedCap, is referred to as feature specific resource and random access resources allocated to feature combinations, for example, resources allocated to feature combinations such as, RedCap and SDT, are referred to as feature combination specific resources. Further, there are resources which are not allocated to any specific feature or feature combination, such resources are common resources.
  • the resources used by the UE 104 to perform the random access are referred to as the one or more second features.
  • the resources include resources such as the frequency and time resources used for performing the random access and the like, it may also include the random access prioritization parameters etc.
  • the report is part of RA-InformationCommon which is sent to the base station 108.
  • the RA-InformationCommon is an information element in the 3GPP which indicates random access features in a report.
  • the report is represented as an ASN.1 Sequence comprising one of: enumerations and a list of bitstrings. Enumerations may be used for features such as SDT, RedCap, msg3repetition etc. whereas the presence of the optional enumeration with the value of enumeration set as true in the report indicates that the feature such as SDTRedCap and msg3repetition is part of the reported features while the list of biststrings may be used for representing the list of NSAG identifiers. The representation of the report is explained in detail later. Reporting of NSAG that triggered the random access process is explained next with reference to FIG. 4 .
  • FIG. 4 illustrates a flow chart of a method 400 for reporting random access features, in accordance with another embodiment of the present disclosure.
  • a random access process is triggered based on a condition. As already explained, the random access process is triggered when the UE 104 tries to establish connection with the base station 108.
  • random access process is performed based on the one or more first features using the one or more second features.
  • one or more first features are identified.
  • the one or more first features are identified based on monitoring of one or more parameters during the random access process.
  • the one or more random access parameters are: UE capabilities, data size, application accessed and RSRP. For example, if the UE is a reduced capability device, i.e. UE capabilities comprise RedCap, the one or more first features that triggered a random access process is reported as RedCap. In another example, if amount data transmitted to the base station 108 is less than a data threshold as configured by the network, the one or more first feature that triggered a random access process is reported as SDT.
  • the one or more first features that triggered a random access process is one or more NSAGs. However, among the one or more NSAGs, the NSAG with the highest priority is considered and a NSAG ID associated with the NSAG of highest priority is reported. In yet another example, if the RSRP is below a threshold, the identified one or more first features is msg3 repetition.
  • each NSAG of the one or more NSAGs is associated with a priority value. This priority value is based on the network configuration. For example, if the user 102 is trying to access multiple applications such as an e-commerce application and a social media application, NSAG 1 associated with e-commerce application and NSAG 2 associated with the social media application trigger the random access process and the identifiers for both NSAG1 and NSAG2 are present in system information such as SIB1 in NR. If the NSAG 1 associated with the e-commerce application has a higher priority than the NSAG 2 of the social media application, the NSAG 1 associated with the e-commerce application is identified as one or more first features.
  • the NSAG from the one or more NSAGs with the highest priority value and is present in system information such as NR SIB1 is considered.
  • Each NSAG from the one or more NSAGs is associated with a NSAG ID.
  • the NSAG ID-1 is associated with the NSAG that triggers the random access process while accessing e-commerce application
  • NSAG ID-2 is associated with the NSAG that triggers the random access process while accessing a social media application. If the NSAG associated with e-commerce application has the highest priority value, NSAG ID-1 is included in the report.
  • the NSAG ID from the one or more NSAG IDs associated with the NSAG having the highest priority and is present in system information such as NR SIB1 is included as part of the report. Further, at 412, the one or more first features and the one or more second features are reported to the base station 108.
  • the one or more first features that triggered the random access process may include RedCap, SDT along with the one or more NSAGs and the one or more second features from the available random access resource may be NSAG and SDT.
  • the report is sent to the base station 108 with the one or more first features identified and the one or more second features.
  • An example of reporting the random access features is explained next with reference to FIG. 5 .
  • FIG. 5 illustrates a flowchart of a method for reporting random access features, in accordance with an embodiment of the present disclosure.
  • the method 500 depicted in the flow diagram may be executed by, for example, the UE 104.
  • Operations of the flow diagram, and combinations of operation in the flow diagram may be implemented by, for example, hardware, firmware, a processor, circuitry and/or a different device associated with the execution of software that includes one or more computer program instructions.
  • the operations of the method 500 are described herein with help of the processor 202 embodied within the UE 104.
  • the method 500 starts at operation 502.
  • a random access process is triggered by one or more first features.
  • the random access process is triggered based on a condition.
  • Some examples of the one or more first features may include, but are not limited to, RedCap, SDT, msg3 repetition and one or more NSAGs. More specifically, the one or more first features that triggered the random access process for establishing a connection with the base station 108.
  • random access process is performed based on the one or more first features using the one or more second features. Further, the one or more second features are accessed from an available random access resources.
  • the available random access resources may include resources which are common, feature specific, and feature combination specific. For example, random access resources specific to a feature, for example, RedCap, is referred to as feature specific resource and random access resources allocated to feature combinations, for example, resources allocated to feature combinations such as, RedCap and SDT, are referred to as feature combination specific resources. Further, there are resources which are not allocated to any specific feature or feature combination, such resources are common resources.
  • the resources used by the UE 104 to perform the random access are referred to as the one or more second features.
  • the one or more first features are identified based on one or more parameters.
  • the one or more parameters are: UE capabilities, data size, application accessed and RSRP.
  • the one or more first features is identified as RedCap when the UE capabilities comprise a RedCap feature indication. More specifically, if the UE supports RedCap then the RedCap feature indication may be enabled.
  • the one or more firs features that triggered the random access process may be identified as SDT when the data size is less than a data threshold. For example, if the data threshold is 50kB and a user wants to send an image of 20kB to another user, the one or more first features identified is SDT as the data size of the image is less than the threshold value.
  • the one or more firs features that triggered the random access process may be identified as the one or more NSAGs when applications are accessed. For example, when a user tries to access multiple applications, such as google, Facebook, etc., on the user device, the one or more NSAGs is identified as the one or more first features.
  • the one or more first features identified is msg3 repetition when the RSRP is less than a RSRP threshold. For example, if the RSRP threshold is -90dB and the UE detects the RSRP as -120dB while establishing connection, the one or more first features is identified as RSRP.
  • a report comprising the one or more first features and the one or more second features are generated.
  • the report is part of RA-InformationCommon which is sent to the base station 108.
  • the RAInformationCommon is an information element in the 3GPP.
  • the report is represented as an ASN.1 Sequence comprising one of: enumerations and a list of bitstrings. The representation of the report is explained in detail later.
  • the report is transmitted to the base station. The base station 108 will use this report for allocation of resources to UE 104.
  • the report is represented as an ASN.1 Sequence comprising one of: enumerations and bitstrings.
  • the report is part of the RA-InformationCommon and is defined as part of TS 38.331 specification of the 3GPP standard.
  • the one or more first features and the one or more second features may be reported in different formats as explained hereinafter. It shall be noted that the representation of the one or more first features and the one or more second features that are reported to the base station explained herein are for exemplary purposes and any format/representation may be used after identifying the one or more first features as explained in the present disclosure.
  • the ASN.1 sequence may comprise enumerations representing RedCap and msg3 repetition (i.e., the one or more first features).
  • the ASN.1 sequence may comprise bitstrings representing the one or more NSAG IDs and the SDT. Further, each first feature of the one or more first features and each second feature of the one or more second features in the enumeration is set as true.
  • the UE 104 sends the report represented as an ASN.1 Sequence comprising enumerations.
  • the enumerations are indicated as a list comprising the one or more first features that triggered the random access process.
  • the report is part of the RA-InformationCommon.
  • the report is a part of one of: a Random Access Channel (RACH) report, Radio Link Failure (RFL) report and Connection Establishment Failure (CEF) report.
  • RACH Random Access Channel
  • RLL Radio Link Failure
  • CEF Connection Establishment Failure
  • FeatureTriggeredRACHList SEQUENCE (SIZE (1..maxNrofFeatures)) OF FeatureTriggeredRACH
  • maxNrofFeatures can be four in NR R18.
  • the report may include representation in other formats other than enumerations to report the one or more first features.
  • the one or more first features and the one or more second features in the report may be ordered according to the feature priority (in the ascending or descending order).
  • the one or more first features include one or more NSAGs, they may be ordered according to the NSAG priority. The order may be in one of: an ascending order and a descending order.
  • the report in the RA-InformationCommon may be represented as ASN.1 sequence comprising enumerations as given below:
  • FeatureCombination-r17 is the same as in NR R17 RRC TS 38.331 specifications in the background and can be defined as below:
  • the UE 104 reports the one or more first features in the report using the below ASN.1 sequence.
  • the report may also include some of the Information elements (IEs) of the below ASN.1 sequence. More specifically, it can contain the same elements or same type of elements which are sent optionally as given in the FeatureCombination- r17 above, but the need code is not Need R. There is no need code during the UE 104 reporting of the one or more first features using the FeatureCombination.
  • IEs Information elements
  • smallData-r18 ENUMERATED ⁇ true ⁇ OPTIONAL
  • slicing-r18 ENUMERATED ⁇ true ⁇ OPTIONAL
  • msg3-Repetitions-r18 ENUMERATED ⁇ true ⁇ OPTIONAL
  • spare4 ENUMERATED ⁇ true ⁇ OPTIONAL
  • the report represented as ASN.1 sequence for including the one or more first features comprising bitstring is given below:
  • the UE 104 includes the one or more second features used to perform random access process in the report.
  • the report is represented as ASN.1 sequence comprising enumerations as given below:
  • FeatureUsedForRACH ENUMERATED ⁇ redCap,slicing,msg3-repetition,slicing ⁇ , FeatureUsedForRACHTriggeredRACHList :: SEQUENCE (SIZE (1..maxNrofFeatures)) OF FeatureUsedForRACH
  • maxNrofFeatures can be four in NR R18.
  • the UE 104 may use the R17 FeatureCombination-r17 to report the one or more second features as given below:
  • FeatureCombination-r17 is the same as in NR R17 RRC TS 38.331 specifications and can be defined as below:
  • smallData-r18 ENUMERATED ⁇ true ⁇ OPTIONAL
  • slicing-r18 ENUMERATED ⁇ true ⁇ OPTIONAL
  • msg3-Repetitions-r18 ENUMERATED ⁇ true ⁇ OPTIONAL
  • spare4 ENUMERATED ⁇ true ⁇ OPTIONAL
  • the report represented as an ASN.1 sequence comprising enumeration is given below:
  • the one or more first features is one or more NSAGs.
  • An NSAG from the one or more NSAG is identified.
  • the NSAG is identified based on priority.
  • Each NSAG from the one or more NSAG will have a priority value based on the network configuration.
  • the NSAG with the highest priority is considered during reporting.
  • An NSAG ID from one or more NSAG IDs are associated with each NSAG from the one or more NSAG.
  • the NSAG ID associated with the NSAG with highest priority will be included in the report if the NSAG is included in System Information Block 1 (SIB1) (i.e., in FeatureCombination and in RA-PrioritizationSliceInfo), in the RA-InformationCommon in NR).
  • SIB1 System Information Block 1
  • the UE includes the NSAGs associated with the S-NSSAI(s) that triggered the random-access attempt (e.g. as informed by UE NAS to UE RRC) in the RA-InformationCommon and stores/reports to the network in RACH report, RLF report, CEF report etc.
  • these NSAGs are reported as the NSAGs that has triggered (feature specific) RACH. In an additional embodiment, these NSAGs are included as NSAGs in the list of NSAGs reported, for e.g., in the FeatureCombination-r17 or ReportedFeatureCombination-r18.
  • the NSAGs that are related to the triggering of access attempts are decided based only on what S-NSSAI triggered the access attempt and the mapping of those S-NSSAI to the NSAG.
  • the UE includes the NSAGs associated with the S-NSSAI(s) triggering the access attempt (e.g., as informed by UE NAS to UE RRC) and that are included in SIB1 (i.e., in FeatureCombination and in RA-PrioritizationSliceInfo), in the RA-InformationCommon and stores/reports to the network in RACH report, RLF report, CEF report.
  • these NSAGs are reported as the NSAGs that has triggered RACH.
  • these NSAGs are included as NSAGs in the list of NSAGs reported in section 1, for e.g., in the FeatureCombination-r17 or ReportedFeatureCombination-r18 as mentioned in embodiment 2 of section 1.
  • the UE includes the highest priority NSAG associated with the S-NSSAI(s) triggering the access attempt (e.g. as informed by UE NAS to UE RRC) and that are included in SIB1 (i.e., in FeatureCombination and in RA-PrioritizationSliceInfo), in the RA-InformationCommon and stores/reports to the network in RACH report, RLF report, CEF report.
  • SIB1 i.e., in FeatureCombination and in RA-PrioritizationSliceInfo
  • these NSAG(s) is reported as the NSAGs that has triggered RACH. In an additional embodiment, this NSAG(s) are included as NSAGs in the list of NSAGs, for e.g. in the FeatureCombination-r17 or ReportedFeatureCombination-r18. If there are multiple NSAGs having the same highest NSAG priority, all of them are stored and reported.
  • the UE when the UE includes the highest priority NSAG associated with the S-NSSAI(s) triggering the access attempt (e.g. as informed by UE NAS to UE RRC) and that are included in SIB1 (i.e., in FeatureCombination and in RA-PrioritizationSliceInfo), in the RA-InformationCommon, the UE includes only the NSAG-id instead of the NSAG-List-r17.
  • SIB1 i.e., in FeatureCombination and in RA-PrioritizationSliceInfo
  • FeatureCombination-r17 or ReportedFeatureCombination-r18 in the report is given below:
  • the one or more NSAGs can be included in RA-InformationCommon as given below:
  • the one or more second features are one or more NSAGs.
  • the UE 104 includes only the one or more NSAG IDs associated with the one or more NSAGs in the report.
  • the one or more NSAG IDs can be included in one of: FeatureCombination-r17 andReportedFeatureCombination-r18 as given below:
  • the one or more NSAGs can be included as part of RA-InformationCommon as given below:
  • the UE 104 includes an index within the one or more NSAGs that triggered the random access process, the report including the one or more NSAGs that is used for the random access in RA- InformationCommon as given below:
  • ⁇ list of NSAGS e.g., NSAG-List-r17 to include the list of NSAGs that triggered feature specific RACH (within the list of triggered features or outside the list of triggered features) >,
  • the index could be an integer with the maximum value as maxSliceInfo-r17. i.e., integer from 1 to maxSliceInfo-r17 or 0 to maxSliceInfo-r17-1.
  • the index maps to an NSAG from the one or more NSAGs that triggered the random access. For example, if the range is from 1 to maxSliceInfo-r17, index n means NSAG-used is the nth entry from the one or more NSAG (NSAG-List-r17) that trigger the random access.
  • the report included in the RA-InformationCommon is given below:
  • the UE 104 indicates that slice specific RACH (or a NSAG-ID) is used for only one of: selecting a partition in the random access process and selecting RA prioritization for feature specific random access process.
  • a boolean flag indicates whether the UE 104 used slice specific random access for (1) selecting a partition in the random access process or (2) selecting RA prioritization for feature specific random access. As such, the presence of this boolean flag indicates that the slice specific random access is not used for selecting RA prioritization for feature specific random access.
  • a Boolean flag indicates that the UE 104 used slice specific random access and the presence of this flag indicates that the slice specific RACH is not used for selecting a partition in feature specific random access.
  • This flag in both the above cases may be optional and absence of this flag can indicate that the one or more NSAGs indicated in the one or more NSAGs is used for both selecting RA prioritization for feature specific random access and for selecting a partition in feature specific random access.
  • the UE 104 may include a boolean flag or an enumeration in the RA- InformationCommon to indicate that slice specific random access is used for selecting a partition in feature specific random access.
  • the UE 104 may include a Boolean flag or an enumeration in the RA-InformationCommon to indicate that slice specific random access is used for selecting RA prioritization feature specific random access.
  • sequence of operations of the method 500 need not be necessarily executed in the same order as they are presented. Further, one or more operations may be grouped together and performed in form of a single step, or one operation may have several sub-steps that may be performed in parallel or in sequential manner.
  • identifying and reporting of the random access features (i.e., the one or more first features and the one or more second features) to the base station enables the base station to optimally allocate resources to the UE.
  • the base station will be able to use the information included in the report to further optimize radio parameters.
  • Some examples of the radio parameters that may be optimized based on the report are given below:
  • SSB selection related parameters i.e., rsrp-ThresholdSSB, msgA-RSRP-ThresholdSSB.
  • preambleReceivedTargetPower/gA-PreambleReceivedTargetPower powerRampingStep/msgA-PreamblePowerRampingStep, msg3-DeltaPreamble/msgA-DeltaPreamble.
  • -Preamble group related parameters i.e., msg3-DeltaPreamble/msgA-DeltaPreamble, messagePowerOffsetGroupB for 2-step RA and 4-step RA.
  • Optimization of the radio parameters enables efficient allocation of resources to plurality of user equipment thereby improving the network performance. Identifying and reporting the random access features automatically according to embodiments of the present disclosure aid in optimal management of resources among plurality of user equipment. Moreover, such reporting of random access features significantly reduces manual effort and time taken to optimize allocation of resources.
  • embodiments of the present disclosure are explained with reference to 5G, embodiments of the present disclosure may be practiced with other communication technologies which perform random access process, such as but not limited to, 4G, 3G, Long Term Evolution (LTE) and the like.
  • 4G Long Term Evolution
  • 3G Long Term Evolution
  • LTE Long Term Evolution
  • the described operations may be implemented as a method, system or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof.
  • the described operations may be implemented as code maintained in a "non-transitory computer readable medium", where a processor may read and execute the code from the computer readable medium.
  • the processor is at least one of a microprocessor and a processor capable of processing and executing the queries.
  • a non-transitory computer readable medium may include media such as magnetic storage medium (e.g., hard disk drives, floppy disks, tape, etc.), optical storage (CD-ROMs, DVDs, optical disks, etc.), volatile and non-volatile memory devices (e.g., EEPROMs, ROMs, PROMs, RAMs, DRAMs, SRAMs, Flash Memory, firmware, programmable logic, etc.), etc.
  • non-transitory computer-readable media may include all computer-readable media except for a transitory.
  • the code implementing the described operations may further be implemented in hardware logic (e.g., an integrated circuit chip, Programmable Gate Array (PGA), Application Specific Integrated Circuit (ASIC), etc.).
  • a computer readable storage medium refers to any type of physical memory on which information or data readable by a processor may be stored.
  • a computer readable storage medium may store instructions for execution by one or more processors, including instructions for causing the processor(s) to perform steps or stages consistent with the embodiments described herein.
  • the term "computer readable medium” should be understood to include tangible items and exclude carrier waves and transient signals, i.e., are non-transitory. Examples include random access memory (RAM), read-only memory (ROM), volatile memory, non-volatile memory, hard drives, CD ROMs, DVDs, flash drives, disks, and any other known physical storage media.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système de communication 5G ou 6G permettant de prendre en charge un débit supérieur de transmission de données. L'invention concerne un procédé par un équipement utilisateur (UE) (104) destiné à rapporter des caractéristiques d'accès aléatoire, comprenant l'identification d'une première caractéristique déclenchant une procédure d'accès aléatoire, la réalisation de la procédure d'accès aléatoire sur la base d'une ressource d'accès aléatoire associée à une seconde caractéristique, la génération d'un rapport comprenant des informations relatives à la première caractéristique et des informations relatives à la seconde caractéristique, et la transmission du rapport à une station de base (108), les informations relatives à la première caractéristique et les informations relatives à la seconde caractéristique comprenant respectivement des informations relatives à au moins l'une d'une capacité réduite (RedCap), d'une transmission de petites données (SDT), d'un groupe AS de tranche de réseau (NSAG) ou de répétitions msg3.
PCT/KR2023/020090 2022-12-07 2023-12-07 Équipement utilisateur pour rapporter des caractéristiques d'accès aléatoire et procédé associé Ceased WO2024123103A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022140450A1 (fr) * 2020-12-21 2022-06-30 Ofinno, Llc Planification de réponse d'accès aléatoire pour dispositif à capacité réduite
WO2022203477A1 (fr) * 2021-03-26 2022-09-29 Samsung Electronics Co., Ltd. Procédé et dispositif de transmission de signal dans un système de communication sans fil
WO2022243977A1 (fr) * 2021-05-20 2022-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Partitionnement de prach pour signalisation de caractéristique

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2022140450A1 (fr) * 2020-12-21 2022-06-30 Ofinno, Llc Planification de réponse d'accès aléatoire pour dispositif à capacité réduite
WO2022203477A1 (fr) * 2021-03-26 2022-09-29 Samsung Electronics Co., Ltd. Procédé et dispositif de transmission de signal dans un système de communication sans fil
WO2022243977A1 (fr) * 2021-05-20 2022-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Partitionnement de prach pour signalisation de caractéristique

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DAPENG LI, ZTE CORPORATION: "Response to R3-226216", 3GPP DRAFT; R3-226765; TYPE RESPONSE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 3, no. Toulouse, FR; 20221114 - 20221118, 9 November 2022 (2022-11-09), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052224247 *
ERICSSON: "Correction to CFRA with additionalRACH-Configs", 3GPP DRAFT; R2-2208132, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic; 20220817 - 20220829, 9 August 2022 (2022-08-09), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052261445 *

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