Frame format with dual mode channel estimation field
AssigneeQUALCOMM Incorporated
InventorsAmichai Sanderovich, Alecsander Petru Eitan, Assaf Yaakov Kasher
Life of this patent
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Abstract
Certain aspects of the present disclosure provide methods and apparatus for generating frames with dual mode channel estimation fields (CEFs) that may accommodate devices with different processing capabilities. In some examples, a frame that is generated comprises a first portion for transmission on separate channels, and a second portion for transmission using channel bonding. The second portion has a training field including first complementary sequences, a first channel estimation field (CEF) including second complementary sequences, and a second CEF including one of the first complementary sequences of the training field and a subset of the second complementary sequences of the first CEF.
Claims15
An apparatus for wireless communications, comprising:
- a processing system configured to generate a frame comprising:
- a first portion for transmission on separate channels;
- and
- a second portion for transmission using channel bonding, wherein:
- the second portion includes:
- a training field including first complementary sequences;
- a first channel estimation field (CEF) including second complementary sequences;
- and
- a shifted CEF, different from the first CEF, including one of the first complementary sequences of the training field and a subset of the second complementary sequences of the first CEF, wherein the shifted CEF is at least partially included within the training field;
- and
- an interface for outputting the frame for transmission.
A wireless station, comprising:
- at least one antenna;
- a processing system configured to generate a frame comprising:
- a first portion for transmission on separate channels;
- and
- a second portion for transmission using channel bonding, wherein:
- the second portion includes:
- a training field including first complementary sequences;
- a first channel estimation field (CEF) including second complementary sequences;
- and
- a shifted CEF, different from the first CEF, including one of the first complementary sequences of the training field and a subset of the second complementary sequences of the first CEF, wherein the shifted CEF is at least partially included within the training field;
- and
- a transmitter configured to transmit the frame via the at least one antenna.
An apparatus for wireless communications, comprising:
- an interface configured to obtain a frame, wherein:
- a first portion of the frame is obtained on separate channels, a second portion of the frame is obtained using channel bonding and
- the second portion includes:
- a training field including first complementary sequences;
- a first channel estimation field (CEF) including second complementary sequences;
- and
- a shifted CEF, different from the first CEF, including one of the first complementary sequences of the training field and a subset of the second complementary sequences of the first CEF, wherein the shifted CEF is at least partially included within the training field;
- and
- a processing system configured to perform channel estimation based on at least one of the first CEF or the second CEF.
Dependencies are inferred from the claim text.