Sony Corporation

Kyoto University

Shoji Kasahara

Eisaburo Itakura

Yutaka Takahashi

Yoshinobu Kure

Kensaku Wakuda

Sei Sunahara

Hiroyuki Masuyama

Yusuke Uchida

A multi-hop wireless terminal having a user application section, a traffic control section and a wireless transmitting/receiving section, the traffic control section enqueuing a packet of a transmission flow from the user application section and a packet of a forward flow from the wireless transmitting/receiving section in queues different for each flow and performing traffic control, where the traffic control section includes a queue manager for sorting a packet of each input flow into a corresponding queue and enqueuing the packet, and a packet scheduler for dequeuing a packet from each queue and outputting the packet, and where the packet scheduler selects from the queues a queue from which a packet is to be dequeued and output, based on transmission information of each of the flows.

Multi-hop wireless terminal and traffic control method thereof

A probe transmitting section () in a packet receiving terminal () sends a probe packet to a second radio channel () at fixed intervals. A probe analyzing section () in a packet sending terminal () detects a burst loss on the basis of a state of reception of the probe packet. When a burst loss detection is detected, a predictive retransmission control section () predicts that a data packet transmitted during the period of the detected burst loss among data packets sent from a priority processing transmission buffer () to a first radio channel () is a data packet lost on a receiving side, reads the data packet from a retransmission buffer (), and then sends the data packet to the priority processing transmission buffer (). A real-time property can be ensured while a packet loss is overcome in a radio environment.

Data communication system, data transmitting device, data transmitting method, data receiving device, and data receiving method

Growing community of inventors

Nara, Japan

Shoji Kasahara