METHOD AND APPARATUS FOR PERFORMING MULTIPLE RACH PROCEDURES

    公开(公告)号:US20210014903A1

    公开(公告)日:2021-01-14

    申请号:US17037097

    申请日:2020-09-29

    Inventor: Li ZHANG Yajun ZHAO

    Abstract: A method and apparatus for performing a random access (RACH) procedure is disclosed. In one embodiment, a method performed by a wireless communication node, includes: performing a plurality of random access (RACH) procedures with a wireless communication device on a first frequency resource set and a second frequency resource set, wherein the plurality of RACH procedures each comprises: receiving a first message on a first frequency resource from the wireless communication device, wherein the first frequency resource is selected from the first frequency resource set; transmitting a second message on a second frequency resource to the wireless communication device within a pre-determined time window, wherein the second frequency resource is selected from the second frequency resource set; receiving a third message on the first frequency resource from the wireless communication device; and transmitting a fourth message on the second frequency resource to the wireless communication device.

    INDICATION OF SYNCHRONIZATION SIGNAL BLOCK TYPE FOR DEVICES WITH REDUCED CAPABILITIES

    公开(公告)号:US20250024515A1

    公开(公告)日:2025-01-16

    申请号:US18899371

    申请日:2024-09-27

    Inventor: Li ZHANG

    Abstract: Methods, apparatus, and systems that relate to indication of Synchronization Signal Block (SSB) types for User Equipment with reduced capabilities are disclosed. In one example aspect, a method for wireless communication includes transmitting, by a base station, system information to a terminal device. The system information indicates whether a cell-defining Synchronization Signal Block (SSB) or a non-cell-defining SSB is applicable to enable the terminal device with reduced capabilities to perform a measurement.

    CONFIGURATIONS FOR RESOURCE-SAVING DATA TRANSMISSIONS IN SHARED SPECTRUM CHANNEL ACCESS

    公开(公告)号:US20220338257A1

    公开(公告)日:2022-10-20

    申请号:US17854014

    申请日:2022-06-30

    Inventor: Wei ZOU Li ZHANG

    Abstract: Presented are systems, methods, apparatuses, or computer-readable media for configuration of resource-saving data transmissions in shared spectrum channel access. A first device may receive, from a second device, configuration information for resource-saving transmission. The first device may determine whether to use the resource-saving transmission in an unlicensed spectrum, according to the received configuration information for resource-saving transmission.

    TRANSMISSION CONFIGURATION INDICATOR (TCI) SWITCHING USING LISTEN BEFORE TALK (LBT) COUNTERS

    公开(公告)号:US20220322433A1

    公开(公告)日:2022-10-06

    申请号:US17848995

    申请日:2022-06-24

    Inventor: Li ZHANG Ruiqi LIU

    Abstract: Presented are systems, methods, apparatuses, or computer-readable media for transmission configuration indicator (TCI) switching using listen before talk (LBT) counters. A wireless communication device in an active TCI switching procedure may receive a physical data shared channel with an activation command. The wireless communication device may determine that a target TCI state is absent from an active TCI state list of the physical data shared channel. The wireless communication device may determine whether the target TCI state is known.

    METHOD AND SYSTEM FOR DATA TRANSMISSION IN WIRELESS NETWORK

    公开(公告)号:US20220225423A1

    公开(公告)日:2022-07-14

    申请号:US17705822

    申请日:2022-03-28

    Inventor: Li ZHANG

    Abstract: Methods, apparatus, and systems for improving data transmission efficiency in a wireless network are described. In one example aspect, a wireless communication method includes receiving a plurality of preambles and a plurality of corresponding media access control random access responses through a plurality of cells, upon a determination that the plurality of preambles is received in the same random access channel resource, multiplexing the plurality of corresponding media access control random access responses into one medium access control protocol data unit, upon a determination that the plurality of corresponding media access control random access responses is in different single frequency networks, adding an indication, to a media access control sub-header, that the one medium access control protocol data unit includes the plurality of media access control random access responses, and transmitting the medium access control protocol data unit including the media access control sub-header with the indication.

    LISTEN BEFORE TALK WIRELESS COMMUNICATION ENHANCEMENTS

    公开(公告)号:US20210352721A1

    公开(公告)日:2021-11-11

    申请号:US17386254

    申请日:2021-07-27

    Abstract: A method of wireless communication includes selecting, based on a field in a message received by a wireless device, an access procedure mode for accessing a wireless network upon occurrence of a condition and performing, by the wireless device upon occurrence of the condition, the access procedure according to the access procedure mode for accessing the wireless network. In some embodiments, the disclosed techniques may be used to improve the performance of a wireless network by reducing number of listen-before-talk attempts that devices have to make before successfully accessing the wireless network.

    MESSAGING FOR RANDOM ACCESS PROCEDURES

    公开(公告)号:US20210219348A1

    公开(公告)日:2021-07-15

    申请号:US17213902

    申请日:2021-03-26

    Inventor: Li ZHANG

    Abstract: A method of wireless communication includes repeatedly transmitting, from a mobile device to a communication node, a first message using increasing power levels for initiating a two-step random-access procedure until a termination condition is met. The first message includes a payload part and optionally a preamble sequence. The termination condition includes (1) the mobile device receives an indication from the communication node that the payload part was received successfully, or (2) a number of repeated transmissions reaches a threshold.

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