公开(公告)号：JP2006186565A

公开(公告)日：2006-07-13

申请号：JP2004376853

申请日：2004-12-27

Applicant: ATR ADVANCED TELECOMM RES INST

Inventor： WATANABE MASAHIRO

IPC: H04B7/26

Abstract: PROBLEM TO BE SOLVED: To provide a radio device forming an autonomously established radio network for performing a plurality of radio communications while suppressing deterioration of throughput. SOLUTION: Each of the radio devices 1-15 holds a routing table indicating the absolute position of the other radio devices with respect to its own device. When radio communication is performed in a path among the radio devices 1-6-9-11, if the radio device 9 receives a request of radio communication with the radio device 10 from the radio device 8, the radio device 9 executes one of radio communication for transmitting data having higher priority, and notifies the transmission source of the other radio communication having lower priority about information of all the radio devices involved in the one radio communication. The transmission source of the other radio communication excludes all the radio devices involved in the one radio communication, and establishes a path for performing the other radio communication on the basis of the routing table. COPYRIGHT: (C)2006,JPO&NCIPI

公开(公告)号：JP2006186583A

公开(公告)日：2006-07-13

申请号：JP2004377083

申请日：2004-12-27

Applicant: ATR ADVANCED TELECOMM RES INST

Inventor： WATANABE MASAHIRO

IPC: H04B7/26 ,  H04L12/28 ,  H04W40/14 ,  H04W40/20 ,  H04W84/18 ,  H04W88/04

Abstract: PROBLEM TO BE SOLVED: To provide a radio device forming a radio network which is autonomously established and performs stable radio communication. SOLUTION: The radio device 1 holds a routing table 20 indicating the absolute positions of radio devices 2-15 with respect to the radio device 1. The routing table 20 consists of the absolute positions of the radio devices 2-15 with respect to the radio device 1 represented by x, y coordinates, and link metric values m1-m32 indicating the degree of stability of communication between the radio devices. The radio device 1, a transmission source, excludes a path having a specific communication distance with which a communication distance between neighboring radio devices causes interruption of radio communication; and decides a path to the radio device 15 being a transmission destination on the basis of a path having a communication distance other than the specific communication distance, with which the communication distance between the neighboring radio devices causes interruption of radio communication. Then, the radio device 1 performs radio communication with the radio device 15 according to the decided path. COPYRIGHT: (C)2006,JPO&NCIPI