METHOD AND APPARATUS FOR ACHIEVING FLEXIBLE BANDWIDTH USING VARIABLE GUARD BANDS
First Claim
1. An apparatus comprising:
- a processor configured to determine usable subcarriers and guard subcarriers based on a configurable operating bandwidth for a wireless communication system, and to perform processing for a transmission sent on the usable subcarriers; and
a memory coupled to the processor.
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Accused Products
Abstract
Techniques to flexibly support different bandwidths in a wireless communication system are described. The system supports a configurable operating bandwidth using a fixed design bandwidth and variable guard bands. Values for various parameters such as fast Fourier transform (FFT) size, cyclic prefix length, and sample rate may be selected based on the design bandwidth. The design bandwidth may be associated with K total subcarriers. Different operating bandwidths may be supported by selecting different numbers of usable subcarriers. A transmitter and a receiver may perform processing for a transmission using the same FFT size, cyclic prefix length, and sample rate regardless of the selected operating bandwidth. The system may use different operating bandwidths and/or different parameter values (e.g., FFT sizes) for different portions of a transmission, e.g., a preamble and a main body of the transmission.
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Citations
43 Claims
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1. An apparatus comprising:
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a processor configured to determine usable subcarriers and guard subcarriers based on a configurable operating bandwidth for a wireless communication system, and to perform processing for a transmission sent on the usable subcarriers; and
a memory coupled to the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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determining usable subcarriers and guard subcarriers based on a configurable operating bandwidth for a wireless communication system; and
performing processing for a transmission sent on the usable subcarriers. - View Dependent Claims (17, 18)
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19. An apparatus comprising:
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means for determining usable subcarriers and guard subcarriers based on a configurable operating bandwidth for a wireless communication system; and
means for performing processing for a transmission sent on the usable subcarriers. - View Dependent Claims (20, 21)
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22. An apparatus comprising:
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a processor configured to determine usable subcarriers and guard subcarriers based on a configurable operating bandwidth for a wireless communication system, the operating bandwidth selected from a plurality of bandwidths associated with different numbers of guard subcarriers and a fixed Orthogonal Frequency Division Multiplexing (OFDM) symbol duration, and to perform processing for a transmission sent on the usable subcarriers, the transmission comprising OFDM symbols having the fixed duration; and
a memory coupled to the processor.
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23. An apparatus comprising:
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a processor configured to perform processing for a first portion of a transmission sent using a first operating bandwidth, and to perform processing for a second portion of the transmission sent using a second operating bandwidth; and
a memory coupled to the processor. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method comprising:
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performing processing for a first portion of a transmission sent using a first operating bandwidth; and
performing processing for a second portion of the transmission sent using a second operating bandwidth. - View Dependent Claims (37, 38, 39)
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40. An apparatus comprising:
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means for performing processing for a first portion of a transmission sent using a first operating bandwidth; and
means for performing processing for a second portion of the transmission sent using a second operating bandwidth. - View Dependent Claims (41, 42, 43)
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Specification