METHODS AND APPARATUS SUPPORTING ADAPTIVE DECENTRALIZED TRAFFIC SCHEDULING INCLUDING A DYNAMIC TRANSMITTER YIELDING THRESHOLD
First Claim
1. A method of operating a first wireless terminal in a system including a first wireless communications link from a second wireless terminal to a third wireless terminal, said first communications link having a higher priority than a second communications link from the first wireless terminal to a fourth wireless terminal, the method comprising:
- transmitting a transmission request to the fourth wireless terminal;
receiving a first transmission request response from the third wireless terminal transmitted in response to a transmission request from the second wireless terminal;
receiving a second transmission request response from the fourth wireless terminal;
estimating the quality of the first communications link from the received first transmission request response signal; and
dynamically generating a yielding threshold based on at least one of;
i) historic link quality information corresponding to the first link;
or ii) quality of service information corresponding to the second communications link.
1 Assignment
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Accused Products
Abstract
Methods and apparatus relating to scheduling of air link resources, e.g., traffic segments, in a wireless communications system are described. Various described methods and apparatus are well suited to wireless peer to peer networks in which traffic scheduling is decentralized, e.g. an ad hoc peer to peer network. An individual wireless terminal corresponding to a peer to peer connection which desires to transmit traffic signals make transmitter yielding decisions on a traffic slot by traffic slot basis. The transmitter yielding decision, in some embodiments, includes comparing a link quality estimate corresponding to a higher priority link intending to use the same traffic segment concurrently, to a dynamically generated transmitter yielding threshold. The dynamically generated transmitter yielding threshold is determined based on at least one of: quality of service information corresponding to its own link and historical link quality information corresponding to the higher priority link.
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Citations
40 Claims
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1. A method of operating a first wireless terminal in a system including a first wireless communications link from a second wireless terminal to a third wireless terminal, said first communications link having a higher priority than a second communications link from the first wireless terminal to a fourth wireless terminal, the method comprising:
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transmitting a transmission request to the fourth wireless terminal; receiving a first transmission request response from the third wireless terminal transmitted in response to a transmission request from the second wireless terminal; receiving a second transmission request response from the fourth wireless terminal; estimating the quality of the first communications link from the received first transmission request response signal; and dynamically generating a yielding threshold based on at least one of;
i) historic link quality information corresponding to the first link;
or ii) quality of service information corresponding to the second communications link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A first wireless terminal in a system including a first wireless communications link from a second wireless terminal to a third wireless terminal, said first communications link having a higher priority than a second communications link from the first wireless terminal to a fourth wireless terminal, the first wireless terminal comprising:
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at least one processor configured to; transmit a transmission request to the fourth wireless terminal; receive a first transmission request response from the third wireless terminal transmitted in response to a transmission request from the second wireless terminal; receive a second transmission request response from the fourth wireless terminal; estimate the quality of the first communications link from the received first transmission request response signal; and dynamically generate a yielding threshold based on at least one of;
i) historic link quality information corresponding to the first link;
or ii) quality of service information corresponding to the second communications link; anda memory coupled to said at least one processor. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A first wireless terminal in a system including a first wireless communications link from a second wireless terminal to a third wireless terminal, said first communications link having a higher priority than a second communications link from the first wireless terminal to a fourth wireless terminal, the first wireless terminal comprising:
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means for transmitting a transmission request to the fourth wireless terminal; means for receiving a first transmission request response from the third wireless terminal transmitted in response to a transmission request from the second wireless terminal; means for receiving a second transmission request response from the fourth wireless terminal; means for estimating the quality of the first communications link from the received first transmission request response signal; and means for dynamically generating a yielding threshold based on at least one of;
i) historic link quality information corresponding to the first link;
or ii) quality of service information corresponding to the second communications link. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A computer program product for use in a first wireless terminal in a system including a first wireless communications link from a second wireless terminal to a third wireless terminal, said first communications link having a higher priority than a second communications link from the first wireless terminal to a fourth wireless terminal, the computer program product comprising:
a computer readable medium comprising; code for causing at least one computer to; transmit a transmission request to the fourth wireless terminal; receive a first transmission request response from the third wireless terminal transmitted in response to a transmission request from the second wireless terminal; receive a second transmission request response from the fourth wireless terminal; estimate the quality of the first communications link from the received first transmission request response signal; and dynamically generate a yielding threshold based on at least one of;
i) historic link quality information corresponding to the first link;
or ii) quality of service information corresponding to the second communications link.
Specification