Patent ID: 8385254
Filing Date: 2013-02-26
Classification: H04W

Abstract:
1. A method for sharing a channel time in a communication system including a plurality of user devices, the method comprising: receiving, from a coordinator, reservation information indicating whether a first channel time is reserved by other user devices; performing a first scan when the first channel time is reserved by one or more of the other user devices, wherein the first scan is performed of the first channel time before determining whether to use the first channel time; performing data transmission or reception in the first channel time if a result of the first scan indicates that no interference occurs, performing a second scan of the first channel time while the data transmission or reception is performed in the first channel time; and terminating the data transmission or reception in response to a termination request received from the coordinator if a result of the second scan of the first channel time indicates that interference occurs, the termination request generated by the coordinator when the occurrence of interference is reported from the other devices.