Patent ID: 7280553
Filing Date: 2007-10-09
Classification: H04B,H04L

Abstract:
1. A communication method among three or more transceivers, said communication method comprising: (a) establishing a condition wherein each of said three or more transceivers is in a communication ready state with a transmission line at a same time, wherein said communication ready state comprises a connection state of being connected to the transmission line without resulting in a high impedance in the connected transceiver; (b) thereafter, disabling at least one transceiver among said three or more transceivers, which have no relation to a communication, from said communication ready state by disabling an ability of said at least one transceiver to communicate with respect to said transmission line; and (c) performing a channel estimation between any two transceivers, of said three or more transceivers, which have a relation with said communication, wherein: the communication method involves a TDMA period, a CSMA period and a frame configuration that has a first frame and a second frame, said first frame including a first known data part, a second known data part, said communication method further comprises a communicating step performed in said TDMA period by using said first frame, and a communicating step performed in said CSMA period by using said second frame after said any two transceivers which have said relation to the communication become under a receiving condition, and a decision whether to use said first frame or said second frame in the communication is made in accordance with which of said first frame and said second frame is shorter.