Apparatus and method of transmitting and receiving message 3 protocol data unit

    公开(公告)号:US11818766B2

    公开(公告)日:2023-11-14

    申请号:US17668798

    申请日:2022-02-10

    Abstract: A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of a terminal for performing a random access procedure in a wireless communication system is provided. In addition, a method by a terminal for system information (SI) request is provided. A method includes receiving, from a base station, information on resources for SI request including information on a start index of at least one random access preamble for the SI request; receiving, from the base station, at least one synchronization signal block (SSB); selecting an SSB among the at least one SSB; determining a preamble for the SI request corresponding to the selected SSB based on the information on the start index; and transmitting, to the base station, the determined preamble based on a physical random access channel (PRACH) occasion corresponding to the selected SSB.

    System and method of selecting rach occasions for system information request

    公开(公告)号:US11696339B2

    公开(公告)日:2023-07-04

    申请号:US17503109

    申请日:2021-10-15

    Inventor: Anil Agiwal

    CPC classification number: H04W74/0833 H04W56/001 H04W72/23

    Abstract: A method of a UE is provided. The method includes receiving, from a base station, configuration information for a system information (SI) request by higher layer signaling, the configuration information including information on a SI request period comprising of a number of association period; identifying information on a SI request resource corresponding to a SI message based on the configuration information, the information on the SI request resource including an index of an association period in the SI request period, information on a random access preamble, and information on a RACH occasion; and transmitting, to the base station, the SI request for the SI message based on the information on the SI request resource.

    System and method of handling bandwidth part inactivity timer

    公开(公告)号:US11678374B2

    公开(公告)日:2023-06-13

    申请号:US16227705

    申请日:2018-12-20

    Inventor: Anil Agiwal

    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of a UE is provided. The method includes receiving, from a base station, first information of a timer associated with bandwidth part (BWP) inactivity; receiving, from the base station, physical downlink control channel (PDCCH) on an active BWP associated with a serving cell; identifying whether there is ongoing random access procedure associated with the serving cell; and starting or re-starting the timer in response to identifying that there is no ongoing random access procedure associated with the serving cell.

    Method and apparatus for performing communication in wireless communication system

    公开(公告)号:US11672017B2

    公开(公告)日:2023-06-06

    申请号:US17165117

    申请日:2021-02-02

    CPC classification number: H04W74/0833 H04L5/0048 H04W72/0413

    Abstract: A method and an apparatus for performing communication in wireless communication system are provided. The method includes receiving random access channel (RACH) configuration information from a base station (BS), in case that a type of a random access is identified as 2-step contention free based on the RACH configuration information, selecting a synchronization signal block (SSB) with synchronization signal-reference signal received power (SS-RSRP) above a configured threshold among SSBs, identifying a random access occasion corresponding to the selected SSB, identifying a physical uplink shared channel (PUSCH) occasion corresponding to a RACH slot of the selected random access occasion from PUSCH occasions configured based on PUSCH resource configuration information included in the RACH configuration information, and performing msgA transmission based on the identified random access occasion and the identified PUSCH occasion.

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