Invention Grant
US09338757B2 Clock synchronization and centralized guard time provisioning 有权
时钟同步和集中保护时间供应

Clock synchronization and centralized guard time provisioning
Abstract:
Embodiments of the invention provide a method to accommodate clock drift and guard time in a centralized fashion. In one embodiment, a first device is adapted to communicate with a second device. A clock in the first device is synchronized to a clock in the second device using beacon or/and acknowledgement frames received from the second device. A centralized guard time is calculated by the second device between two neighboring allocation intervals. The centralized guard time accounts for clock drift in the first and second devices during a nominal synchronization interval. An interval at least as long as the centralized guard time is provisioned by the second device between two neighboring allocation intervals. One or more frames are transmitted between the devices within the allocation intervals.
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