公开(公告)号：US20200275398A1

公开(公告)日：2020-08-27

申请号：US16646116

申请日：2018-08-30

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Ren DA ,  Zheng ZHAO ,  Bin REN ,  Tony EKPENYONG ,  Pierre BERTRAND ,  Fangchen CHENG ,  Tie LI ,  Qiubin GAO

IPC: H04W56/00 ,  H04L5/00 ,  H04W74/08

Abstract: A timing advance indication method, a base station, a terminal and a device are provided. The method includes: transmitting subcarrier spacing configuration information of a physical uplink shared channel and/or a physical uplink control channel to a terminal; receiving a preamble fed back by the terminal based on subcarrier spacing configuration information; obtaining a quantized value of a timing advance corresponding to a tracking area based on the preamble; and transmitting the quantized value of the timing advance to the terminal.

公开(公告)号：US20200163124A1

公开(公告)日：2020-05-21

申请号：US16633563

申请日：2018-07-20

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Ren DA ,  Bin REN ,  Tony EKPENYONG ,  Zheng ZHAO ,  Fangchen CHENG ,  Tie LI

IPC: H04W74/08

Abstract: A random access method, a base station and a User Equipment (UE) are provided. A random access method applied to a base station side includes: receiving, by using a pre-configured first SubCarrier Spacing (SCS), a first random access preamble message transmitted by a UE when the base station instructs the UE to perform an initial access according to a contention-based random access mechanism; transmitting, by using a predetermined second SCS or a third SCS configured by a network, a first Random Access Response (RAR) message to the UE; receiving, by using a predetermined fourth SCS or a fifth SCS configured by the network, a first scheduling transmission message transmitted by the UE; and transmitting, by using a predetermined sixth SCS or a seventh SCS configured by the network, a first collision resolution message to the UE, to complete the initial access.

公开(公告)号：US20190289574A1

公开(公告)日：2019-09-19

申请号：US16349164

申请日：2017-08-22

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Tie LI ,  Shanzhi CHEN ,  Shaoli KANG ,  Bin REN ,  Yanping XING ,  Zheng ZHAO

IPC: H04W72/02 ,  H04W72/04 ,  H04W74/08

Abstract: An uplink scheduling-free transmission method and an uplink scheduling-free transmission device are provided. The uplink scheduling-free transmission method includes: dividing, by a base station, MA resources into groups of MA resources, and configuring, by the base station, the groups of MA resources to obtain at least two groups of MA resource pools, wherein at least parts of respective MA resources in the at least two groups of MA resource pools are different from each other; and notifying, by the base station, a UE of the at least two groups of MA resource pools, to enable the UE to select an MA resource pool from the at least two groups of MA resource pools, wherein the selected MA resource pool is to be used by the UE.