Method for recognizing station and method for establishing link in home network
First Claim
1. A method for recognizing stations in a home network of an OFDM-based system, wherein the home network includes starting and destination stations, the method comprising the steps of:
- (a) assigning a node number to each station and assigning subchannels corresponding to the node number of each station;
(b) the starting station constructing tones corresponding to the subchannels assigned to its own node number and the node number of the destination station as single OFDM symbol, and placing the OFDM symbol in a frame for transmission; and
(c) stations other than the starting station detecting the tones from the frame, recovering the node number using indices of the subchannels obtained from the tones, and recognizing the starting station and the destination station.
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Accused Products
Abstract
In a method for recognizing stations in a home network of an OFDM scheme and a method for establishing a link between stations in a home network having a plurality of stations, a node number is assigned to the each station and subchannels corresponding to each node number are assigned to each station, the starting station constructing tones corresponding to the subchannels assigned to its own node number and the node number of the destination station as single OFDM symbol, and placing the OFDM symbol in a frame for transmission, and stations other than the starting station detecting the tones from the frame, recovering the node number using indices of the subchannels obtained from the tones and recognizing the starting station and the destination station. According to this method, it is possible to mitigate or eliminate the overhead needed in recovering data of a specific header in all stations and estimating a channel by detecting a signal in a data transmission between stations while sharing a medium, by demodulating the first OFDM symbol and detecting information on a destination station.
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Citations
20 Claims
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1. A method for recognizing stations in a home network of an OFDM-based system, wherein the home network includes starting and destination stations, the method comprising the steps of:
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(a) assigning a node number to each station and assigning subchannels corresponding to the node number of each station;
(b) the starting station constructing tones corresponding to the subchannels assigned to its own node number and the node number of the destination station as single OFDM symbol, and placing the OFDM symbol in a frame for transmission; and
(c) stations other than the starting station detecting the tones from the frame, recovering the node number using indices of the subchannels obtained from the tones, and recognizing the starting station and the destination station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for establishing a link between stations in a home network having a plurality of stations, the method comprising the steps of:
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(a) a starting station constructing a frame including recognition information including a self-address and an address of a destination station, an average noise power reflecting channel properties of the starting station, and a training sequence, and transmitting the frame;
(b) the destination station determining whether it is the destination station based on the recognition information and estimating channel power and noise power from the received training sequence;
(c) the destination station selecting subchannels by using the estimated channel power, the noise power, and the average noise power, constructing location information of the selected subchannels as an OFDM symbol, and transmitting the OFDM symbol to the starting station; and
(d) the starting station recovering the OFDM symbol and detecting a final location of a final subchannel from location information of the subchannels. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification