公开(公告)号：US20210127366A1

公开(公告)日：2021-04-29

申请号：US17044736

申请日：2019-11-20

Applicant: SHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES

Inventor： Wei LIANG ,  Jialin ZHANG ,  Meng ZHENG ,  Sichao ZHANG ,  Kai WANG ,  Shuai LIU

IPC: H04W72/04

Abstract: The present invention relates to an allocation technology for wireless network resources, and particularly to a resource allocation method for coexistence of multiple line topological industrial wireless networks. The present invention considers the coexistence problem of multiple TDMA-based line topological industrial wireless networks, including three parts: lower bound analysis of scheduling delay, allocation algorithm of inter-network resources and allocation algorithm of intra-network resources. The method uses overall scheduling delay and resource utilization ratio as measurement indexes when analyzing the lower bound of delay and designing resource allocation algorithms, and selects a best node combination in each time slot to occupy as many channel resources as possible to improve the resource utilization ratio and reduce the overall scheduling delay.

公开(公告)号：US20190069183A1

公开(公告)日：2019-02-28

申请号：US16073023

申请日：2017-05-18

Applicant: SHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES

Inventor： Wei LIANG ,  Haibin YU ,  Bo YANG ,  Meng ZHENG ,  Shiwei PENG ,  Shiming LI

IPC: H04W16/10 ,  H04B1/713

Abstract: The present invention relates to a Torus-Quorum based channel rendezvous method for directional antennas. A pair of directional antennas facing any side initially points to the other party mutually in one Torus-Quorum system cycle through a rotation closure attribute of a Torus-Quorum system; and a receiver and a sender switch to a same available channel according to frequency hopping sequences to realize channel rendezvous. In the Torus-Quorum based channel rendezvous method for directional antennas proposed in the present invention, the directional antennas are rotated based on the Torus-Quorum, and elements are ensured to coincide with each other within limited time through the rotation closure attribute of the Torus-Quorum system, i.e., directions are opposite, thereby effectively shortening channel rendezvous time of the directional antennas.