Variable SDMA ACK timeout
First Claim
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1. An apparatus, comprisinga device containing a computing platform, a modulator and a demodulator to process radio frequency signals, the device to:
- perform a transmission to a base station over a wireless channel;
monitor the wireless channel, subsequent to completion of the transmission, to determine if another device is transmitting to the base station over the wireless channel; and
begin a timeout period responsive to determining said another device is not transmitting to the base station over the wireless channel, the timeout period to measure a time during which an acknowledgement from the base station may be received.
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Abstract
In a spatial division multiple access system that employs acknowledgements to variable length transmissions within a timeout period, a station that has completed its transmission may delay beginning the timeout period until it determines that other stations on the same channel have completed their transmissions.
12 Citations
20 Claims
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1. An apparatus, comprising
a device containing a computing platform, a modulator and a demodulator to process radio frequency signals, the device to: -
perform a transmission to a base station over a wireless channel; monitor the wireless channel, subsequent to completion of the transmission, to determine if another device is transmitting to the base station over the wireless channel; and begin a timeout period responsive to determining said another device is not transmitting to the base station over the wireless channel, the timeout period to measure a time during which an acknowledgement from the base station may be received. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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an omnidirectional antenna; a wireless communications device containing a computing platform, a modulator and a demodulator to process radio frequency signals, the device coupled to the omnidirectional antenna and adapted to perform a transmission from the omnidirectional antenna to a base station over a wireless channel; monitor the wireless channel, subsequent to completion of the transmission, for a clear channel condition; and begin a timeout period responsive to determining a presence of the clear channel condition. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method, comprising:
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transmitting a data transmission to a base station over a wireless communications channel; monitoring the wireless communications channel, subsequent to said transmitting, until a clear channel condition is detected; beginning a timeout period subsequent to said detecting a clear channel condition; and determining if an acknowledgement to said data transmission is received from the base station during the timeout period. - View Dependent Claims (15, 16)
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17. A computer-readable medium storing instructions, which when executed by a processing platform, cause said processing platform to perform operations comprising:
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placing data into at least one transmit queue to perform a data transmission over a wireless communications channel; monitoring the wireless communications channel subsequent to said data transmission; beginning a timeout period responsive to said monitoring determining that said wireless communications channel is not busy; and reading data from a receive queue to determine if an acknowledgement to said data transmission is received during the timeout period. - View Dependent Claims (18, 19, 20)
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Specification