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US 2002/0143970 A1Published application
Devices, methods and software for centralized session planning while in a DCF mode
AssigneeSharp Labs
InventorSrinivas Kandala
Life of this patent
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Abstract
Devices, softwares and methods for centralized session planning while in a DCF mode. An access point plans centrally a schedule of individual sessions with each station. Then it announces to each peripheral station the onset of the session by a polling pulse that includes the return address of a MAC layer of the station. The addressed peripheral device then transmits data from its MAC layer.
Claims24
A communication device comprising:
- a physical medium;
- and
- a processor coupled with the physical medium, wherein the processor is adapted to
- (a) receive a plurality of reservation request frames from a plurality of respective devices during a Centralized Contention Interval for a wireless communication channel;
- (b) decode a reservation request from each reservation request frame, and a return address of a MAC sublayer of an associated device;
- (c) determine at a MAC sublayer a schedule of transmission sessions for exchanging data with the respective devices as per the respective reservation requests;
- (d) identify one of the devices from the schedule as being the next one;
- (e) encode the associated return address of the next device in a polling frame;
- (f) acquire control of the channel;
- (g) transmit the polling frame over the channel while in a DCF mode;
- and
- (h) exchange data over the channel from the identified device during the respective session.
9 more elements
A communication device comprising:
- a physical medium;
- and
- a processor coupled with the physical medium, wherein the processor is adapted to
- transmit a reservation request through a wireless communication channel during a Centralized Contention Interval;
- receive a polling frame through the channel while in a DCF mode;
- decode a return address from the polling frame;
- determine whether the return address matches an address of a MAC sublayer;
- and
- if so, transmit data from the MAC sublayer through the channel.
6 more elements
An article comprising:
- a storage medium, said storage medium having stored thereon instructions, that, when executed by at least one device, result in:
- (a) receiving a plurality of reservation request frames from a plurality of respective devices during a Centralized Contention Interval for a wireless communication channel;
- (b) decoding a reservation request from each reservation request frame, and a return address of a MAC sublayer of an associated device;
- (c) determining at a MAC sublayer a schedule of transmission sessions for exchanging data with the respective devices as per the respective reservation requests;
- (d) identifying one of the devices from the schedule as being the next one;
- (e) encoding the associated return address of the next device in a polling frame;
- (f) acquiring control of the channel;
- (g) transmitting the polling frame over the channel while in a DCF mode;
- and
- (h) exchanging data over the channel from the identified device during the respective session.
7 more elements
An article comprising:
- a storage medium, said storage medium having stored thereon instructions, that, when executed by at least one device, result in:
- transmitting a reservation request through a wireless communication channel during a Centralized Contention Interval;
- receiving a polling frame through the channel while in a DCF mode;
- decoding a return address from the polling frame;
- determining whether the return address matches an address of a MAC sublayer;
- and
- if so, transmitting data from the MAC sublayer through the channel.
4 more elements
A method comprising:
- (a) receiving a plurality of reservation request frames from a plurality of respective devices during a Centralized Contention Interval for a wireless communication channel;
- (b) decoding a reservation request from each reservation request frame, and a return address of a MAC sublayer of an associated device;
- (c) determining at a MAC sublayer a schedule of transmission sessions for exchanging data with the respective devices as per the respective reservation requests;
- (d) identifying one of the devices from the schedule as being the next one;
- (e) encoding the associated return address of the next device in a polling frame;
- (f) acquiring control of the channel;
- (g) transmitting the polling frame over the channel while in a DCF mode;
- and
- (h) exchanging data over the channel from the identified device during the respective session.
6 more elements
A method comprising:
- transmitting a reservation request through a wireless communication channel during a Centralized Contention Interval;
- receiving a polling frame through the channel while in a DCF mode;
- decoding a return address from the polling frame;
- determining whether the return address matches an address of a MAC sublayer;
- and
- if so, transmitting data from the MAC sublayer through the channel.
3 more elements
Dependencies are inferred from the claim text.