Method and device for allocating resource units using leftover tones in wireless LAN
地域：
Seoul
摘要
Disclosed are a method and a device for allocating resource units using leftover tones in a wireless LAN. The method for allocating resource units using leftover tones in a wireless LAN may comprise the steps of: an AP generating PPDUs to be transmitted to a plurality of STAs; and the AP transmitting the PPDUs to the plurality of STAs on all frequency bands, wherein the PPDUs are transmitted from each of a plurality of resource unit sets respectively allocated to each of the plurality of STAs, wherein each of the plurality of resource unit sets includes a first resource unit set and a second resource unit set, wherein the first resource unit set includes at least one resource unit, the second resource unit set includes one tone design resource unit, and wherein the tone design resource unit may include at least one other resource unit and at least one additional tone unit.
說明書
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This application is the National Phase of PCT International Application No. PCT/KR2015/012671, filed on Nov. 24, 2015, which claims priority under 35 U.S.C. 119(e) to U.S. Provisional Application No. 62/083,320, filed on Nov. 24, 2014, 62/083,888, filed on Nov. 24, 2014, 62/090,368, filed on Dec. 11, 2014, and 62/091,638, filed on Dec. 15, 2014, all of which are hereby expressly incorporated by reference into the present application.
The present invention relates to wireless communication and, most particularly, to a method and device for allocating resource units using leftover tones in a wireless LAN.
Discussion for a next-generation wireless local area network (WLAN) is in progress. In the next-generation WLAN, an object is to 1) improve an institute of electronic and electronics engineers (IEEE) 802.11 physical (PHY) layer and a medium access control (MAC) layer in bands of 2.4 GHz and 5 GHz, 2) increase spectrum efficiency and area throughput, 3) improve performance in actual indoor and outdoor environments such as an environment in which an interference source exists, a dense heterogeneous network environment, and an environment in which a high user load exists, and the like.
權(quán)利要求
What is claimed is:1. A method for allocating resource units in a wireless local area network (WLAN), the method comprising:generating, by an access point (AP), a physical (PHY) layer protocol data unit (PPDU) for a plurality of stations (STAs); and transmitting, by the AP, the PPDU to the plurality of STAs based on a plurality of resource unit groups for an entire frequency bandwidth, wherein each of the plurality of resource unit groups is allocated to each of the plurality of STAs, wherein each of the plurality of resource unit groups corresponds to at least one 26-tone resource unit or a tone design resource unit that includes at least one other 26-tone resource unit and at least one additional tone unit, and wherein the at least one additional tone unit corresponds to leftover tones remaining after a plurality of frequency tones corresponding to the plurality of resource unit groups are divided in a 26-tone resource unit. 2. The method of claim 1 , wherein a number of the at least one additional tone unit is linearly increased in accordance with an increase in a number of the at least one other 26-tone resource unit. 3. The method of claim 2 , wherein a number of the at least one additional tone unit corresponds to a fixed value being independent from the increase in the number of the at least one other 26-tone resource unit. 4. The method of claim 1 , wherein the tone design resource unit is located to one of a predetermined plurality of allocatable frequency locations within the entire frequency bandwidth, andwherein the predetermined plurality of allocatable frequency locations are determined based on a location of the at least one additional tone unit. 5. The method of claim 1 , wherein the entire frequency bandwidth corresponds to 20 MHz,wherein the plurality of frequency tones correspond to a 242-tone resource unit, and wherein each of the at least one additional tone unit corresponds to a 4-tone leftover tone unit. 6. An access point (AP) allocating resource units in a wireless local area network (WLAN), the AP comprising:a radio frequency (RF) unit transmitting and receiving radio signals; and a processor being operatively connected to the RF unit, wherein the processor is configured: to generate a physical (PHY) layer protocol data unit (PPDU) for a plurality of stations (STAs), and to transmit the PPDU to the plurality of STAs based on a plurality of resource unit groups for an entire frequency bandwidth, wherein each of the plurality of resource unit groups is allocated to each of the plurality of STAs, wherein each of the plurality of resource unit groups corresponds to at least one 26-tone resource unit or a tone design resource unit that includes at least one other 26-tone resource unit and at least one additional tone unit, and wherein the at least one additional tone unit corresponds to leftover tones remaining after a plurality of frequency tones corresponding to the plurality of resource unit groups are divided in a 26-tone resource unit. 7. The AP of claim 6 , wherein a number of the at least one additional tone unit is linearly increased in accordance with an increase in a number of the at least one other 26-tone resource unit. 8. The AP of claim 7 , wherein a number of the at least one additional tone unit corresponds to a fixed value being independent from the increase in the number of the at least one other 26-tone resource unit. 9. The AP of claim 6 , wherein the tone design resource unit is located to one of a predetermined plurality of allocatable frequency locations within the entire frequency bandwidth, andwherein the predetermined plurality of allocatable frequency locations are determined based on a location of the at least one additional tone unit. 10. The AP of claim 6 , wherein the entire frequency bandwidth corresponds to 20 MHz,wherein the plurality of frequency tones correspond to a 242-tone resource unit, and wherein each of the at least one additional tone unit corresponds to a 4-tone leftover tone unit.
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