Patent ID: 7366135

Claim:
A radio channel assignment method in a mesh-like network in which a plurality of radio nodes are arranged in a decentralized manner and radio channels adopting TDD architecture between a pair of opposite radio nodes are assigned in a decentralized manner to establish a radio link, comprising: a step of, for each radio link, locating respective ones of a pair of radio nodes terminating the radio link to either one of an upper side and a lower side exclusively; and a step that one of a radio node located to an upper side from the radio link or a radio node located to a lower side therefrom assigns a frequency slot to each radio link except for the radio links having the same side of the respective nodes, wherein the frequency slot is assigned such that coincidence in allocation attribute of TDD time slot is achieved in respective radio links; and wherein the radio nodes comprises: a step that one of the radio nodes selects a frequency slot optimal to a radio link to be assigned with a frequency slot; a step of making determination about whether or not the selected frequency slot is being used in the adjacent link; a step of, when the selected frequency slot is being used in the adjacent link, replacing the frequency slot of the adjacent link with another frequency slot; and a step of assigning the selected frequency slot to the radio link.