Access method and a relay station and terminals thereof
First Claim
1. An access method used for relaying and transferring data from a first terminal to a second terminal using a relay station when the data cannot be directly transmitted from said first terminal to said second terminal in a data transmission system having a procedure to exchange control information at least one time between said first terminal and said second terminal to transmit said data from said first terminal to said second terminal, said access method comprising:
- a step of receiving said control information transmitted from said first terminal in said relay station;
a step of detecting a response of said control information from said second terminal during a preset detection time interval from a time of reception of said control information in said relay station;
a first sequence step of exchanging, instead of said second terminal, said control information with said first terminal and receiving said data from said first terminal when said response has not been detected during said detection time interval in said relay station; and
a second sequence step of exchanging said control information with said second terminal and transferring said data to said second terminal in said relay station.
1 Assignment
0 Petitions
Accused Products
Abstract
In a transmission system having a procedure to exchange control information at least one time between a first terminal and a second terminal to transfer data from the first terminal to the second terminal, a relay station receives control information transmitted from the first terminal and detects existence of the control information from the second terminal during a preset detection time interval from a time of reception of the control information. If the control information has not been detected, the relay station exchanges the control information with said first terminal instead of the second terminal, receives data from the first terminal and transfers the data to the second terminal.
196 Citations
23 Claims
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1. An access method used for relaying and transferring data from a first terminal to a second terminal using a relay station when the data cannot be directly transmitted from said first terminal to said second terminal in a data transmission system having a procedure to exchange control information at least one time between said first terminal and said second terminal to transmit said data from said first terminal to said second terminal, said access method comprising:
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a step of receiving said control information transmitted from said first terminal in said relay station; a step of detecting a response of said control information from said second terminal during a preset detection time interval from a time of reception of said control information in said relay station; a first sequence step of exchanging, instead of said second terminal, said control information with said first terminal and receiving said data from said first terminal when said response has not been detected during said detection time interval in said relay station; and a second sequence step of exchanging said control information with said second terminal and transferring said data to said second terminal in said relay station. - View Dependent Claims (2, 3)
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4. An access method used for relaying and broadcasting broadcast data in a data transmission system having a procedure to exchange control information at least one time between terminals, said access method comprising:
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a step of broadcasting said broadcast data to a plurality of terminals in a first terminal; a step of broadcasting broadcast information that informs of completion of broadcasting to said terminals when said broadcast data has been received in a relay station; a step of transmitting a relay request to said relay station when having received only said broadcast information in each of said terminals; a step of detecting said relay request during a preset detection time interval from the time when said broadcast information had been transmitted in said relay station; and a step of transferring said broadcast data to a terminal that had transmitted said relay request when said relay request has been detected during said detection time interval in said relay station. - View Dependent Claims (5)
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6. An access method used for relaying and transferring data from a first terminal to a second terminal using a relay station when the data cannot be directly transmitted from said first terminal to said second terminal in data information transmission system having a procedure to exchange control information at least one time between said first terminal and said second terminal to transmit said data information from said first terminal to said second terminal, said access method comprising:
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a step of receiving said information selected from the group consisting of said control information and said data information transmitted from said first terminal in said relay station; a step of detecting existence of a response of said information from said second terminal during a preset detection time interval from a time of reception of said information in said relay station; a step of transferring said information to said second terminal when said response has not been detected during said detection time interval in said relay station. - View Dependent Claims (7)
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8. An access method of a transmission system having a plurality of terminals, comprising:
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a step of calculating weight based on a product of a terminal'"'"'s active period and a number of other terminals that have communicated with said terminal; a step of generating a weighing information by adding an address of said terminal to said weight; a step of broadcasting said weighing information in each terminal; a step of receiving said weighing information and creating a weighing information list consisting of upper n weighing information in each terminal; and a step of said terminal functioning as a relay station when said terminal has a biggest weight based on said weighing information list of each terminal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A relay station for relaying and transferring data from a first terminal to a second terminal when said data cannot be directly transmitted from said first terminal to said second terminal in a data transmission system having a procedure to exchange control information at least one time between said first terminal and said second terminal to transmit said data from said first terminal to said second terminal, said relay station comprising:
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means for receiving and judging said control information transmitted from said first terminal and judging said control information from among said information; means for detecting a response of said control information from said second terminal during a preset detection time interval from a time of reception of said control information; means for exchanging, instead of said second terminal, said control information with said first terminal, receiving said data from said first terminal, exchanging said control information with said second terminal and transferring said data to said second terminal when said response has not been detected during said detection time interval. - View Dependent Claims (17)
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18. A relay station for relaying and transferring data information from a first terminal to a second terminal when said data information cannot be directly transmitted from said first terminal to said second terminal in a data transmission system having a procedure to exchange control information at least one time between said first terminal and said second terminal to transmit said data information from said first terminal to said second terminal, said relay station comprising:
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means for receiving information selected from the group consisting of said control information and said data information transmitted from said first terminal; means for detecting a response of said information from said second terminal during a preset detection time interval from a time of reception of said information; means for transferring said information to said second terminal when said response has not been detected during said detection time interval. - View Dependent Claims (19)
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20. An access system used for relaying and broadcasting a broadcast data in a data transmission system having a procedure to exchange control information at least one time between terminals to transmit not broadcast a data, said access system comprising:
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a first terminal having means for broadcasting said broadcast data; a relay station having means for broadcasting broadcast information that informs of completion of broadcasting when said broadcast data has been received, means for detecting a relay request during a preset detection time interval from the time when said broadcast information had been transmitted, and means for broadcasting said broadcast data to a terminal that had transmitted said relay request when said relay request has been detected during said detection time interval; and each of said terminals having means for transmitting said relay request to said relay station when having received only said broadcast information. - View Dependent Claims (21)
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22. A terminal device used for mobile communication systems comprising:
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means for calculating weight based on a product of a terminal'"'"'s active period and a number of other terminals that have communicated with said own terminal, and generating weighting information by adding said terminal'"'"'s address to said weight; means for broadcasting said weighting information; means for receiving said weighting information from other terminals and creating a weighting information list consisting of upper and n weights; means for setting said terminal as a relay station when said terminal has biggest weight among weights stored in said weighting information list. - View Dependent Claims (23)
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Specification