Patent ID: 8072925

Claim:
A multi-hop wireless network system, comprising: a first radio device as the source; a second radio device (M 8 ) as the destination; a third radio device relaying wireless communications between the first and the second radio devices; and a radio controller allowing or rejecting a quality maintenance request according to characteristics of a wireless communication path running from the first radio device to the second radio device through the third radio device, the quality maintenance request requesting transmission of traffic with a certain level of quality, the traffic being a stream of packets transmitted from the first radio device to the second radio device; wherein the first and the third radio devices measure characteristics of the wireless communication path, the radio controller receives the measured characteristics of the wireless communication path and allows or rejects the quality maintenance request according to the received characteristics of the wireless communication path, and the first radio device starts to transmit the traffic to the second radio device through the third radio device if the quality maintenance request is allowed by the radio controller.