Synchronization method in distributed wireless communication system and terminal supporting the same
AssigneeElectronics and Telecommunications Research Institute
InventorsByung-Jae KWAK, Kapseok CHANG, June-Koo RHEE, Junhyuk KIM, Kyounghye KIM
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Abstract
Disclosed is a synchronization method in a distributed wireless communication system and a terminal supporting the same. In a synchronization method, a terminal splits a synchronization period into a plurality of backoff slots and randomly selects a backoff counter using the contention window. Furthermore, the terminal checks whether a channel is idle during at least one of the plurality of backoff slots and changes the backoff counter based on a result of the check.
Claims20
A synchronization method of a first terminal in a distributed wireless communication system, comprising:
- splitting a synchronization period into a plurality of backoff slots;
- setting a contention window;
- randomly selecting a backoff counter using the contention window;
- checking whether a channel is idle during at least one of the plurality of backoff slots;
- and
- changing the backoff counter based on a result of the check.
A synchronization method of a first terminal in a distributed wireless communication system, comprising:
- receiving first synchronization signals from the first terminal and second terminals different from the first terminal;
- calculating an average inter-arrival time between the first synchronization signals;
- calculating an average contention window of the second terminals using the first synchronization signals;
- setting a first contention window which is a contention window of the first terminal using the average inter-arrival time and the average contention window;
- and
- determining whether or not to send a synchronization signal in response to the first contention window.
A terminal, comprising:
- an RF module configured to send and receive a synchronization signal;
- and
- a processor configured to split the synchronization period into a plurality of backoff slots, randomly select a backoff counter using a contention window, and decrease a value of the backoff counter if a channel is idle during a first backoff slot of the plurality of backoff slots.
Dependencies are inferred from the claim text.