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US 8,570,986 B2Granted
Semi-random back-off method for achieving resource reservation in wireless local area networks
AssigneeThomson Licensing
InventorsYong He, Xiao-jun Ma, Jun Li
Life of this patent
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Abstract
A method and apparatus are described including determining if a successful unicast transmission has occurred, adjusting a contention window to a minimum value and adjusting a time slot back-off counter to one-half of the value of the contention window plus one responsive to the determination and adjusting the contention window using one of a plurality of adjustment schemes and selecting said time slot back-off counter from an interval between zero and the contention window.
Claims6
A method, said method comprising:
- determining if a successful unicast transmission has occurred;
- if a successful unicast transmission has occurred, adjusting a contention window to a minimum value and adjusting a time slot back-off counter to one-half of the value of said contention window plus one;
- adjusting a service ring size responsive to said time slot back-off counter;
- and
- adjusting said contention window using one of a plurality of adjustment schemes and selecting said time slot back-off counter from an interval between zero and said contention window.
2 more elements
An apparatus comprising:
- means for determining if a successful unicast transmission has occurred;
- means for adjusting a contention window to a minimum value and adjusting a time slot back-off counter to one-half of the value of said contention window plus one if a successful unicast transmission has occurred;
- means for adjusting a service ring size responsive to said time slot back-off counter;
- and
- means for adjusting said contention window using one of a plurality of adjustment schemes and selecting said time slot back-off counter from an interval between zero and said contention window.
2 more elements
Dependencies are inferred from the claim text.