Wireless preamble structure for OFDMA signaling under OBSS interference
First Claim
1. An access point comprising:
- a transmitter; and
a processing unit coupled to the transmitter, wherein the processing unit is configured to;
generate a wireless protocol data unit (PDU),wherein the wireless PDU spans a channel in frequency,wherein the channel comprises a plurality of subchannels, and respective subchannels of the plurality of subchannels span respective portions of the frequency of the channel,wherein the wireless PDU includes a first signaling section, a second signaling section, and a traffic section, the first signaling section spanning the channel in frequency and a first time interval, and the second signaling section spanning the channel in frequency and a second time interval,wherein the first signaling section includes a plurality of redundant copies of first common signaling information for two or more user devices of N user devices, wherein respective subchannels of the plurality of subchannels comprise respective redundant copies of the plurality of redundant copies within the respective portions of the frequency and the first time interval, wherein the first signaling section comprises an HE-SIG-A and a first field of an HE-SIG-B, wherein the HE-SIG-A comprises a first portion of the first common signaling information, wherein the first field of an HE-SIG-B comprises a second portion of the first common signaling information,wherein, for each of the plurality of subchannels of the channel, the second signaling section includes within that subchannel a corresponding set of signaling information for a corresponding group of one or more of the N user devices,wherein the second signaling section comprises a second field of the HE-SIG-B; and
transmit, via the transmitter, the wireless PDU.
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Abstract
A wireless access point transmits a protocol data unit (PDU) that includes data and signaling for a plurality of user devices. The PDU spans a channel in frequency and an interval in time, and includes a first signaling section, a second signaling section and a traffic action. For each of a plurality of subchannels of the channel: the first signaling section includes (within the subchannel) a corresponding redundant copy of common signaling information for the user devices associated with the access point; the second signaling section includes (within the subchannel) a corresponding set of user-specific signaling information for a corresponding group of one or more of the user devices; and the traffic section includes (within the subchannel) a corresponding set of traffic data for the corresponding group of one or more user devices. Subchannels sizes may be configurable. A signaling set CRC may be included per subchannel.
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Citations
20 Claims
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1. An access point comprising:
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a transmitter; and a processing unit coupled to the transmitter, wherein the processing unit is configured to; generate a wireless protocol data unit (PDU), wherein the wireless PDU spans a channel in frequency, wherein the channel comprises a plurality of subchannels, and respective subchannels of the plurality of subchannels span respective portions of the frequency of the channel, wherein the wireless PDU includes a first signaling section, a second signaling section, and a traffic section, the first signaling section spanning the channel in frequency and a first time interval, and the second signaling section spanning the channel in frequency and a second time interval, wherein the first signaling section includes a plurality of redundant copies of first common signaling information for two or more user devices of N user devices, wherein respective subchannels of the plurality of subchannels comprise respective redundant copies of the plurality of redundant copies within the respective portions of the frequency and the first time interval, wherein the first signaling section comprises an HE-SIG-A and a first field of an HE-SIG-B, wherein the HE-SIG-A comprises a first portion of the first common signaling information, wherein the first field of an HE-SIG-B comprises a second portion of the first common signaling information, wherein, for each of the plurality of subchannels of the channel, the second signaling section includes within that subchannel a corresponding set of signaling information for a corresponding group of one or more of the N user devices, wherein the second signaling section comprises a second field of the HE-SIG-B; and transmit, via the transmitter, the wireless PDU. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A user device comprising:
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a receiver; and a processing unit coupled to the receiver, wherein the processing unit is configured to; receive, via the receiver, at least a portion of a wireless protocol data unit (PDU), wherein the wireless PDU spans a channel in frequency, wherein the wireless PDU includes a first signaling section, a second signaling section and a traffic section, the first signaling section spanning the channel in frequency and a first time interval, and the second signaling section spanning the channel in frequency and a second time interval, wherein the first signaling section includes a plurality of redundant copies of first common signaling information for two or more user devices of N user devices, wherein respective subchannels of the plurality of subchannels comprise respective redundant copies of the plurality of redundant copies within the respective portions of the frequency and the first time interval, wherein the first signaling section comprises an HE-SIG-A and a first field of an HE-SIG-B, wherein the HE-SIG-A comprises a first portion of the first common signaling information, wherein the first field of an HE-SIG-B comprises a second portion of the first common signaling information, wherein, for each of the plurality of subchannels of the channel, the second signaling section includes within that subchannel a corresponding set of signaling information for a corresponding group of one or more of the N user devices, wherein said user device is included in a first of the groups, corresponding to a first of the subchannels, wherein the second signaling section comprises a second field of the HE-SIG-B. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A non-transitory memory medium for operating a user device, the memory medium storing program instructions, wherein the program instructions, when executed by a processor, cause the processor to implement:
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receiving at least a portion of a wireless protocol data unit (PDU), wherein the wireless PDU spans a channel in frequency, wherein the channel comprises a plurality of subchannels, and respective subchannels of the plurality of subchannels span respective portions of the frequency of the channel, wherein the wireless PDU includes a first signaling section, a second signaling section and a traffic section, the first signaling section spanning the channel in frequency and a first time interval, and the second signaling section spanning the channel in frequency and a second time interval, wherein the first signaling section includes a plurality of redundant copies of first common signaling information for two or more user devices of N user devices, wherein respective subchannels of the plurality of subchannels comprise respective redundant copies of the plurality of redundant copies within the respective portions of the frequency and the first time interval, wherein the first signaling section comprises an HE-SIG-A and a first field of an HE-SIG-B, wherein the HE-SIG-A comprises a first portion of the first common signaling information, wherein the first field of an HE-SIG-B comprises a second portion of the first common signaling information, wherein, for each of the plurality of subchannels of the channel, the second signaling section includes within that subchannel a corresponding set of signaling information for a corresponding group of one or more of the N user devices, wherein said user device is included in a first of the groups, corresponding to a first of the subchannels, wherein the second signaling section comprises a second field of the HE-SIG-B.
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Specification