Negotiating nuanced preamble extension
AssigneeCisco Technology, Inc.
InventorBrian D. HART
Life of this patent
Estimating the term…
Abstract
A method and system for negotiating a duration of an extension portion of a preamble are disclosed. In a PPDU, a preamble extension has several forms. A station and an access point (AP) negotiate to select one or more of the forms suited to a change in the operation of the station. When the change is increased data throughput, the station sends one or more throughput-related parameters in a proposal to the AP. When the change is the number of spatial streams, the station sends the number as a parameter in the proposal. When the change is a different coding set, then the coding set is sent as the parameter in the proposal. The AP responds to the proposal which fixes the values of the parameters and the duration of the extension portion of the preamble.
Claims20
A method of negotiating a duration of an extension portion of a preamble, the method comprising:
- receiving a proposal from a station, wherein the proposal includes a set of parameters with values equal to first values to be used by the station when the station makes an operational transition;
- and
- responding to the proposal, wherein responding fixes the values of the set of parameters and the duration of the extension portion of the preamble.
An access point comprising:
- a processor;
- and
- a memory coupled to the processor and loaded with a program executable by the processor to:
- receive a proposal from a station, wherein the proposal includes a set of parameters with values equal to first values to be used by the station when the station makes an operational transition;
- and
- respond to the proposal, wherein being executable to respond to the proposal fixes the values of the set of parameters and a duration of an extension portion of a preamble.
A non-transitory computer-readable medium encoding instructions, which, when executed by a processor of an access point (AP) coupled to a wireless medium, cause the AP to:
- receive a proposal from a station, wherein the proposal includes a set of parameters with values equal to first values to be used by the station when the station makes an operational transition;
- and
- respond to the proposal, wherein causing the AP to respond to the proposal fixes the values of the set of parameters and a duration of an extension portion of a preamble.
Dependencies are inferred from the claim text.