Transmitting/receiving device and method in wireless communication system
AssigneeLG Electronics Inc.
InventorsWookbong Lee, Jinsoo Choi, Dongguk Lim, Jinyoung Chun, Hangyu Cho
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Abstract
Disclosed herein is a station (STA) device of a wireless LAN (WLAN) system. The STA device includes a radio frequency (RF) unit sending and receiving a radio signal and a processor controlling the RF unit. The processor may generate a physical protocol data unit (PPDU) including a physical preamble and a data field and send the PPDU using the RF unit.
Claims8
An access point (AP) device in a wireless local area network (WLAN) system, the AP device comprising:
- a transceiver;
- and
- a processor,
- wherein the processor is configured to:
- generate a physical protocol data unit (PPDU) including a physical preamble and a data field, and
- control the transceiver to send the PPDU to one or more stations (STAs) by spatial multiplexing a plurality of streams,
- wherein the physical preamble includes a legacy preamble and a high efficiency (HE) preamble,
- wherein the HE preamble includes an HE signal A (HE-SIG-A) field, an HE signal B (HE-SIG-B) field, an HE-short training field (STF), and an HE-long training field (LTF), the HE-SIG-B field being located in front of the HE-STF and the HE-LTF,
- wherein an HE-LTF sequence for each of the plurality of streams is mapped to frequency resources in a single symbol, and
- wherein HE-LTF sequences for one or more streams mapped to a same subcarrier among the plurality of streams are code division multiplexed by a P matrix to generate a multiplexed HE-LTF.
A method for transmitting, by an access point (AP) device, data in a wireless local area network (WLAN) system, the method comprising:
- generating a physical protocol data unit (PPDU) including a physical preamble and a data field;
- and sending the PPDU to one or more stations (STAs) by spatial multiplexing a plurality of streams,
- wherein the physical preamble includes a legacy preamble and a high efficiency (HE) preamble,
- wherein the HE preamble includes an HE signal A (HE-SIG-A) field, an HE signal B (HE-SIG-B) field, an HE-short training field (STF), and an HE-long training field (LTF), the HE-SIG-B field being located in front of the HE-STF and the HE-LTF,
- wherein an HE-LTF sequence for each of the plurality of streams is mapped to frequency resources in a single symbol, and
- wherein HE-LTF sequences for one or more streams mapped to a same subcarrier among the plurality of streams are code division multiplexed by a P matrix to generate a multiplexed HE-LTF.
Dependencies are inferred from the claim text.