Range extension mode for WiFi
First Claim
1. A method for generating a physical layer (PHY) data unit for transmission via a communication channel, the method comprising:
- generating, by a communication device, a transmission signal for transmission via a wireless communication channel, wherein the transmission signal corresponds to the PHY data unit, the PHY data unit conforming to a range extension mode of a first communication protocol, and wherein generating the PHY data unit includes;
generating a preamble of a PHY data unit, wherein the preamble is generated to include;
a legacy signal field that includes information indicating a duration of the PHY data unit, wherein the legacy signal field is formatted according to a second, legacy communication protocol,a duplicate of the legacy signal field,a plurality of subfields of a non-legacy signal field, anda plurality of additional subfields with the same data as the plurality of subfields of the non-legacy signal field,wherein the plurality of subfields of the non-legacy signal field and the plurality of additional subfields are modulated to signal to a receiving device that the PHY data unit conforms to the range extension mode of a first communication protocol; and
generating, by the communication device, orthogonal frequency division multiplexing (OFDM) symbols for a data field of the PHY data unit according to a range extension coding scheme that corresponds to the range extension mode of the first communication protocol.
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Abstract
A communication device generates a transmission signal for transmission via a wireless communication channel, wherein the transmission signal corresponds to a physical layer (PHY) data unit that conforms to a range extension mode of a first communication protocol. Generating the PHY data unit includes generating a preamble of a PHY data unit, wherein the preamble is generated to include: a legacy signal field that includes information indicating a duration of the PHY data unit, a duplicate of the legacy signal field, a plurality of subfields of a non-legacy signal field, and a plurality of additional subfields with the same data as the plurality of subfields of the non-legacy signal field. The plurality of subfields of the non-legacy signal field and the plurality of additional subfields are modulated to signal to a receiving device that the PHY data unit conforms to the range extension mode of a first communication protocol.
212 Citations
24 Claims
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1. A method for generating a physical layer (PHY) data unit for transmission via a communication channel, the method comprising:
generating, by a communication device, a transmission signal for transmission via a wireless communication channel, wherein the transmission signal corresponds to the PHY data unit, the PHY data unit conforming to a range extension mode of a first communication protocol, and wherein generating the PHY data unit includes; generating a preamble of a PHY data unit, wherein the preamble is generated to include; a legacy signal field that includes information indicating a duration of the PHY data unit, wherein the legacy signal field is formatted according to a second, legacy communication protocol, a duplicate of the legacy signal field, a plurality of subfields of a non-legacy signal field, and a plurality of additional subfields with the same data as the plurality of subfields of the non-legacy signal field, wherein the plurality of subfields of the non-legacy signal field and the plurality of additional subfields are modulated to signal to a receiving device that the PHY data unit conforms to the range extension mode of a first communication protocol; and generating, by the communication device, orthogonal frequency division multiplexing (OFDM) symbols for a data field of the PHY data unit according to a range extension coding scheme that corresponds to the range extension mode of the first communication protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a network interface device including; one or more integrated circuit (IC) devices, a media access control (MAC) processing unit implemented using the one or more IC devices, and a physical layer (PHY) processing unit implemented using the one or more IC devices and coupled to the MAC processing unit; wherein the one or more IC devices are configured to; generate a transmission signal for transmission via a wireless communication channel, wherein the transmission signal corresponds to a PHY data unit that conforms to a range extension mode of a first communication protocol, and wherein generating the PHY data unit includes; generating a preamble of a PHY data unit, wherein the preamble is generated to include; a legacy signal field that includes information indicating a duration of the PHY data unit, wherein the legacy signal field is formatted according to a second, legacy communication protocol, a duplicate of the legacy signal field, a plurality of subfields of a non-legacy signal field, and a plurality of additional subfields with the same data as the plurality of subfields of the non-legacy signal field, wherein the plurality of subfields of the non-legacy signal field and the plurality of additional subfields are modulated to signal to a receiving device that the PHY data unit conforms to the range extension mode of a first communication protocol; and wherein the one or more IC devices are further configured to; generate orthogonal frequency division multiplexing (OFDM) symbols for a data field of the PHY data unit according to a range extension coding scheme that corresponds to the range extension mode of the first communication protocol. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification