Abstract:
In a wireless communication system configured to have a plurality of nodes, any one of the nodes receives a broadcast message from the nodes adjacent thereto, and calculates a reception time point variation that is difference between a time point when the message is received for each of the adjacent nodes and a time point when the preceding message is received. The reference time of the node is corrected based on the variation calculated for each of the adjacent nodes.
Abstract:
A method for controlling time of reference (Tr) in a wireless mesh network according to the present invention, which is performed by a time-of-reference control system, comprises: a network entry step in which an entry node trying an entry into a network synchronizes its own time of reference with time of reference of a sponsor node of the wireless mesh network; an initial holdoff time step in which adjusts a location of the time of reference to change the time of reference fitted for the sponsor node to the time of reference within the network for an initial holdoff time period before transmission of a broadcast message ; and a periodic ranging step of correcting an accumulated error of the time of reference.
Abstract:
Provided is a method for managing a low duty operation of a small base station. The small base station determines a low duty cycle pattern in which an available section to perform a transmission operation by activating a wireless interface and an unavailable section in which the transmission operation is not performed are repeated and supplies low duty cycle pattern information including a start offset to instruct a wireless frame in which a cycle pattern starts and the length of the available interval to a terminal.
Abstract:
멀티캐스트 자원 관리 방법으로서, 기지국이 멀티캐스트 그룹에 멀티캐스트 자원을 할당한다. 기지국은 멀티캐스트 자원의 정보와 멀티캐스트 자원이 분할되는지를 지시하는 전송 지시자를 포함하는 MAP IE를 생성한 후, 멀티캐스트 그룹에 MAP IE를 전송한다.