公开(公告)号：US20210144679A1

公开(公告)日：2021-05-13

申请号：US16492580

申请日：2018-02-07

Applicant: China Academy of Telecommunications Technology

Inventor： Zhe CHEN ,  Xinyu LI

IPC: H04W72/02 ,  H04W4/46 ,  H04W4/44 ,  H04W72/04 ,  G08G1/00

Abstract: The invention discloses a communication method and device utilized in a vehicle convoy. The method comprises: a leader vehicle obtaining, from a network apparatus, a first quantity of communication resources; the leader vehicle allocating, according to the first quantity of the communication resource allocated by the network apparatus, a second quantity of the communication resource to a first follower vehicle in the vehicle convoy, and communicating, according to the second quantity of the communication resource, with the first follower vehicle, wherein the first follower vehicle is any one of follower vehicles in the vehicle convoy, and the second quantity is less than or equal to the first quantity. The embodiments provide a novel communication method utilized in a vehicle convoy to resolve an issue of a conventional roadside base station being incapable of timely allocating resources to a vehicle convoy.

公开(公告)号：US20200266962A1

公开(公告)日：2020-08-20

申请号：US16639879

申请日：2018-08-03

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Li CHEN ,  Fangli XU ,  Pierre BERTRAND ,  Jiamin LIU ,  Xinyu LI

IPC: H04L5/00 ,  H04W72/04

Abstract: The present disclosure provides a retransmission activating/deactivating method, a base station, a user equipment and a device. The method includes: determining a correspondence relationship between a bearer which is allowed for retransmission under the first base station and a bit of a preset field of media access control (MAC) control element (CE) of the first base station for activating/deactivating retransmission; where the preset field is used to indicate activation/deactivation retransmission of the bearer which is allowed for retransmission; and, when determining to activate/deactivate retransmission of the bearer which is allowed for retransmission under the first base station, populating, by the first base station, the bit, which is in the preset field of the MAC CE for activating/deactivating retransmission and corresponding to the bearer, thereby generating the MAC CE for activating/deactivating retransmission, and transmitting to the UE the generated MAC CE for activating/deactivating retransmission.

公开(公告)号：US20190174549A1

公开(公告)日：2019-06-06

申请号：US15752890

申请日：2016-07-12

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Fangli XU ,  Jianhua LIU ,  Xinyu LI

IPC: H04W74/08 ,  H04W4/70

Abstract: The present invention provides an MTC UE random access method and device. The method comprises: receiving indication information sent by a network side, the indication information being used for indicating at least one coverage enhancement level (CE LEVEL) and a physical random access channel (PRACH) resource corresponding thereto; selecting one CE LEVEL from a CE LEVEL of an MTC UE and the CE LEVEL indicated by the network side, and determining a PRACH resource corresponding to the CE LEVEL; and carrying out random access on the PRACH resource corresponding to the selected CE LEVEL. The present invention provides a mechanism of how to select a PRACH resource when a network side triggers an MTC UE to initiate a contention-free random access (CFRA) process.