Patent ID: 9166672
Filing Date: 2015-10-20
Classification: H04B,H04L,H04W

Abstract:
1. A wireless communication system comprising: a relay system comprising a plurality of relay devices which are connected to one another via a system bus, wherein a unique relaying channel is allocated to each of the plurality of relay devices; a plurality of wireless terminal devices which communicate with each other via the relay system, and each of the plurality of wireless terminal devices being registered to one of the plurality of relay devices; wherein each of the plurality of relay devices transmits control information to each of the wireless terminal devices with which it is registered; wherein each wireless terminal device receives the control information transmitted from the relay device to which it is registered, selects a channel which is currently able to relay a communication among the unique relaying channels respectively allocated to the plurality of relay devices based on the received control information, and communicates with another wireless terminal device via the selected channel; wherein each of the plurality of relay devices receives a synchronization signal via the system bus to configure the control information, and wirelessly transmit a downlink signal to the wireless terminal device to which the relay device is registered; and wherein each of the plurality of wireless terminal devices maintains, when shifting a channel for communication to another channel, a synchronized state with the plurality of relay devices through the system bus and to the plurality of wireless terminal devices established prior to shifting for at least a predetermined period.