Multi-rate overlay mode in wireless communication systems
First Claim
1. A method for frame-based communication processing performed by a first wireless communication device, the first wireless communication device configured with a legacy wireless communication protocol (legacy protocol) and a multiple data rate (multi-rate) extension mechanism to the legacy protocol, the method comprising:
- identifying a data transfer rate associated with a second wireless communication device, whereinthe data transfer rate is identified from a group comprising a legacy data transfer rate specified by the legacy protocol and a plurality of non-legacy data transfer rates specified by the multi-rate extension mechanism,the legacy data transfer rate is achieved by a legacy modulation scheme specified by the legacy protocol,each of the plurality of non-legacy data transfer rates are achieved by a respective one of a plurality of non-legacy modulation schemes specified by the multi-rate extension mechanism, andeach of the plurality of non-legacy data transfer rates are different than the legacy data transfer rate;
in response to an identification of a selected non-legacy data transfer rate associated with the second wireless communication device, identifying a selected non-legacy modulation scheme associated with the selected non-legacy data transfer rate;
performing modulation of a data payload according to the selected non-legacy modulation scheme to produce a modulated data payload;
forming a non-legacy header structure comprising a non-legacy start-of-frame delimiter (SFD) and an identifier of the selected non-legacy modulation scheme;
performing modulation of the non-legacy header structure according to the legacy modulation scheme to produce a modulated non-legacy header structure; and
assembling the modulated non-legacy header structure and the modulated data payload into a non-legacy frame having a structure that is different from a legacy frame structure specified by the legacy protocol.
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Accused Products
Abstract
A method is provided, which includes identifying a data transfer rate associated with a wireless communication device. The data transfer rate is identified from a group including a legacy data transfer rate and a plurality of non-legacy data transfer rates. In response to identification of a selected non-legacy data transfer rate, a selected non-legacy modulation scheme is identified, which is associated with the selected non-legacy data transfer rate. Modulation of a data payload is performed according to the selected non-legacy modulation scheme. A non-legacy header structure is formed that includes a non-legacy start-of-frame delimiter (SFD) and an identifier of the selected non-legacy modulation scheme. Modulation of the non-legacy header structure is performed according to the legacy modulation scheme. The modulated non-legacy header structure and the modulated data payload are assembled into a non-legacy frame having a structure that is different from a legacy frame structure specified by the legacy protocol.
24 Citations
20 Claims
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1. A method for frame-based communication processing performed by a first wireless communication device, the first wireless communication device configured with a legacy wireless communication protocol (legacy protocol) and a multiple data rate (multi-rate) extension mechanism to the legacy protocol, the method comprising:
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identifying a data transfer rate associated with a second wireless communication device, wherein the data transfer rate is identified from a group comprising a legacy data transfer rate specified by the legacy protocol and a plurality of non-legacy data transfer rates specified by the multi-rate extension mechanism, the legacy data transfer rate is achieved by a legacy modulation scheme specified by the legacy protocol, each of the plurality of non-legacy data transfer rates are achieved by a respective one of a plurality of non-legacy modulation schemes specified by the multi-rate extension mechanism, and each of the plurality of non-legacy data transfer rates are different than the legacy data transfer rate; in response to an identification of a selected non-legacy data transfer rate associated with the second wireless communication device, identifying a selected non-legacy modulation scheme associated with the selected non-legacy data transfer rate; performing modulation of a data payload according to the selected non-legacy modulation scheme to produce a modulated data payload; forming a non-legacy header structure comprising a non-legacy start-of-frame delimiter (SFD) and an identifier of the selected non-legacy modulation scheme; performing modulation of the non-legacy header structure according to the legacy modulation scheme to produce a modulated non-legacy header structure; and assembling the modulated non-legacy header structure and the modulated data payload into a non-legacy frame having a structure that is different from a legacy frame structure specified by the legacy protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for frame-based communication processing performed by a wireless communication device configured with a legacy wireless communication protocol (legacy protocol) and a multiple data rate (multi-rate) extension mechanism to the legacy protocol, the method comprising:
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performing demodulation on a first portion of a header structure of a received frame according to a legacy demodulation scheme specified by the legacy protocol to produce a demodulated first portion; extracting a start-of-frame delimiter (SFD) from the demodulated first portion; in response to a determination that the SFD is a non-legacy SFD that identifies the received frame as having a non-legacy frame structure specified by the multi-rate extension mechanism that is different from a legacy frame structure specified by the legacy protocol, performing demodulation on a second portion of the header structure of the received frame to produce a demodulated second portion; extracting a modulation configuration identifier from the demodulated second portion; and performing demodulation on a data payload of the received frame according to a modulation configuration identified by the modulation configuration identifier, wherein the modulation configuration specifies a selected demodulation scheme from among a plurality of non-legacy demodulation schemes supported by the wireless communication device, each of the plurality of non-legacy demodulation schemes is different from the legacy demodulation scheme, and each of the plurality of non-legacy demodulation schemes achieves a data transfer rate different than a legacy data transfer rate achieved by the legacy demodulation scheme. - View Dependent Claims (13, 14, 15)
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16. A wireless communication device configured with a legacy wireless communication protocol (legacy protocol) and a multiple data rate (multi-rate) extension mechanism to the legacy protocol, comprising:
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a communication stack module configured to encapsulate a data payload into a frame, wherein the frame comprises a header structure that comprises a non-legacy start-of-frame delimiter (SFD) and a modulation configuration identifier (ID), the non-legacy SFD identifies the frame as having a non-legacy frame structure specified by the multi-rate extension mechanism that is different from a legacy frame structure specified by the legacy protocol, and the modulation configuration ID identifies a selected modulation configuration; a modem configured to perform modulation of the header structure according to a legacy modulation scheme specified by the legacy protocol, and perform modulation of the data payload according to a selected data payload modulation scheme specified by the selected modulation configuration, wherein the modem is configured to implement a plurality of modulation configurations, each of the plurality of modulation configurations specify a different data payload modulation scheme that achieves higher throughput of the data payload during transmission of the frame than a throughput achieved by utilization of the legacy modulation scheme on the data payload. - View Dependent Claims (17, 18, 19, 20)
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Specification