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US 11,637,572 B2Granted
Method for auto-detection of WLAN packets using STF
AssigneeHuawei Technologies Co., Ltd.
InventorsYan Xin, Sheng Sun
Life of this patent
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Abstract
A method of auto-detection of WLAN packets includes selecting a first Golay sequence from a first pair of Golay complementary sequences associated with first packet type, each Golay sequence of the first pair of Golay complementary sequences being zero correlation zone (ZCZ) sequences with each Golay sequence of a second pair of Golay complementary sequences associated with a second packet type, and transmitting a wireless packet carrying a short training field (STF) that includes one or more instances of the first Golay sequence.
Claims18
A method comprising:
- receiving, by a wireless communication device, a wireless packet comprising a short training field (STF), the STF including a plurality of preamble component sequences having a zero correlation zone (ZCZ) property;
- determining, by the wireless communication device, a first cross-correlation between the STF and a first preamble component sequence from a first set of preamble component sequences associated with a first packet type and a second cross-correlation between the STF and a second preamble component sequence from a second set of preamble component sequences associated with a second packet type, the first preamble component sequence and the second preamble component sequence having the ZCZ property;
- counting, by the wireless communication device, peaks of the first cross-correlation and the second cross-correlation including a plurality of peaks of either the first cross-correlation or the second cross-correlation;
- and
- determining, by the wireless communication device, that the wireless packet is the second packet type when the second cross-correlation has more peaks than the first cross-correlation.
2 more elements
A wireless communication device comprising:
- a non-transitory memory storage comprising instructions;
- and
- one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute the instructions to:
- receive a wireless packet comprising a short training field (STF), the STF including a plurality of preamble component sequences having a zero correlation zone (ZCZ) property;
- determine a first cross-correlation between the STF and a first preamble component sequence from a first set of preamble component sequences associated with a first packet type and a second cross-correlation between the STF and a second preamble component sequence from a second set of preamble component sequences associated with a second packet type, the first preamble component sequence and the second preamble component sequence having the ZCZ property;
- counting peaks of the first cross-correlation and the second cross-correlation including a plurality of peaks of either the first cross-correlation or the second cross-correlation;
- and
- determine that the wireless packet is the second packet type when there is a greater correlation between the STF and the second preamble component sequence than between the STF and the first preamble component sequence.
5 more elements
Dependencies are inferred from the claim text.