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US 2014/0211775 A1Published application
Larger delay spread support for wifi bands
AssigneeQUALCOMM Incorporated
InventorsHemanth SAMPATH, Vincent Knowles JONES, IV, Sameer VERMANI, Didier Johannes Richard VAN NEE, Gwendolyn Denise BARRIAC, Bin TIAN
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Abstract
Aspects of the present disclosure provide techniques that may help address the effects of larger delay spreads in WiFi bands. Methods and apparatus are provided that perform wireless communications utilizing varying cyclic prefix lengths, varying repetition intervals, and varying symbol durations to ameliorate the effects of large delay spreads.
Claims20
An apparatus for wireless communications, comprising:
- a processing system configured to generate a packet having a preamble decodable by a first type of device having a first set of capabilities and a second type of device having a second set of capabilities and transmit the packet, wherein at least one field of the preamble is transmitted in a manner that allows the second type of device to determine a cyclic prefix length used in transmitting the packet;
- and
- a memory coupled with the processing system.
A method for wireless communications, comprising:
- generating a packet having a preamble decodable by a first type of device having a first set of capabilities and a second type of device having a second set of capabilities;
- and
- transmitting the packet, wherein at least one field of the preamble is transmitted in a manner that allows the second type of device to determine a cyclic prefix length used in transmitting the packet.
An access point for wireless communications, comprising:
- at least one antenna;
- a processing system configured to generate a packet having a preamble decodable by a first type of wireless station having a first set of capabilities and a second type of wireless station having a second set of capabilities;
- and
- a transmitter configured to transmit the packet via the at least one antenna to at least one wireless station, wherein at least one field of the preamble is transmitted in a manner that allows the second type of wireless station to determine a cyclic prefix length used in transmitting the packet.
1 more element
Dependencies are inferred from the claim text.