CODING OVER MULTIPLE RESOURCE UNITS (RU) IN EXTREMELY HIGH THROUGHPUT (EHT) SYSTEMS

• US 20200136773A1
• Filed: 12/27/2019
• Published: 04/30/2020
• Est. Priority Date: 03/11/2019
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Chen, Xiaogang, Li, Qinghua, Jiang, Feng, Avital, Ziv, Gurevitz, Assaf, Stacey, Robert J., Kojokaro, Chen, Kenney, Thomas J., Reshef, Ehud, Bravo, Daniel F., Cariou, Laurent
• Granted Patent: US 11,343,035 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

Embodiments of an access point (AP), station (STA) and method of communication are generally described herein. The STA may determine a portion of a channel occupied by an incumbent device. The STA may refrain from communication in a first subset of resource units (RUs) that overlap the portion of the channel occupied by the incumbent device. The STA may determine a combined RU that comprises two or more RUs of a second subset of RUs that do not overlap the portion of the channel occupied by the incumbent device. The STA may encode a physical layer convergence procedure protocol data unit (PPDU) for transmission in the combined RU. The PPDU may be encoded in accordance with joint coding across the RUs of the combined RU.

Claims

1. An apparatus of a station (STA) configurable for wireless local area network (WLAN) communication in a channel that is configurable to support communication by incumbent devices, wherein the communication by the incumbent devices is prioritized over the WLAN communication, wherein the channel comprises a plurality of resource units (RUs), each RU comprising a contiguous plurality of resource elements (REs), wherein the apparatus comprises:

memory; and

processing circuitry, configured to;

determine a portion of the channel occupied by an incumbent device;

refrain from communication in a first subset of RUs that overlap the portion of the channel occupied by the incumbent device;

determine a combined RU that comprises two or more RUs of a second subset of RUs that do not overlap the portion of the channel occupied by the incumbent device; and

encode a physical layer convergence procedure protocol data unit (PPDU) for transmission in the combined RU,

wherein the PPDU is encoded in accordance with joint coding across the RUs of the combined RU.

2. The apparatus according to claim 1, wherein as part of the joint coding, the processing circuitry is further configured to:

determine coded bits based on information bits;

determine modulated symbols based on the coded bits; and

map the modulated symbols to the REs of the combined RU.

3. The apparatus according to claim 2, wherein:

the coded bits are determined based on an encode operation that is based on a size of the combined RU,

the size of the combined RU is equal to a sum that includes sizes of the RUs that comprise the combined RU.

4. The apparatus according to claim 2, wherein as part of the joint coding, the processing circuitry is further configured to interleave the coded bits.

5. The apparatus according to claim 2, wherein as part of the joint coding, the processing circuitry is further configured to interleave the modulated symbols.

6. The apparatus according to claim 2, the processing circuitry further configured to map the modulated symbols to the REs of the combined RU for orthogonal frequency division multiplexing (OFDM) transmission.

7. The apparatus according to claim 1, the processing circuitry further configured to:

restrict the combined RU to include RUs of size that is greater than or equal to a predetermined minimum size.

8. The apparatus according to claim 7, wherein the predetermined minimum size is 242 REs.

9. The apparatus according to claim 1, wherein:

the processing circuitry includes a baseband processor to encode the PPDU,

the apparatus further comprises a transceiver to transmit the PPDU, and

the memory is configured to store at least a portion of the PPDU.

10. A non-transitory computer-readable storage medium of a station (STA) that stores instructions for execution of operations by processing circuitry, wherein the STA is configurable for wireless local area network (WLAN) communication in a channel that is configurable to support communication by incumbent devices, wherein the communication by the incumbent devices is prioritized over the WLAN communication, wherein the channel comprises a plurality of resource units (RUs), each RU comprising a contiguous plurality of resource elements (REs), wherein the operations configure the processing circuitry to:

determine a portion of the channel occupied by an incumbent device;

refrain from communication in a first subset of RUs that overlap the portion of the channel occupied by the incumbent device;

determine a second subset of RUs that do not overlap the portion of the channel occupied by the incumbent device; and

encode one or more codewords (CWs) for transmission in the RUs of the second subset,

wherein the CWs are encoded in accordance with independent coding for each of the RUs of the second subset.

11. The non-transitory computer-readable storage medium according to claim 10, wherein as part of the independent coding, the operations further configure the processing circuitry to:

for each of the RUs of the second subset;

determine coded bits based on information bits;

determine modulated symbols based on the coded bits; and

map the modulated symbols to the REs of the RU.

12. The non-transitory computer-readable storage medium according to claim 10, wherein as part of the independent coding, the operations further configure the processing circuitry to:

for each of the RUs of the second subset, determine a codeword size independent of other RUs of the second subset;

determine coded bits based on information bits;

determine modulated symbols based on the coded bits;

map the modulated symbols sequentially across multiple RUs of the second subset.

13. The non-transitory computer-readable storage medium according to claim 12, the operations to further configure the processing circuitry to:

map the modulated symbols sequentially across multiple RUs of the second subset for orthogonal frequency division multiplexing (OFDM) transmission.

14. An apparatus of a station (STA), wherein the apparatus comprises:

memory; and

processing circuitry, configured to;

encode a physical layer convergence procedure protocol data unit (PPDU) for transmission in a non-contiguous resource unit (RU) comprising two or more segments of resource elements (REs), wherein the REs of each segment are spaced uniformly in frequency by a predetermined spacing, wherein the segments of REs are disjoint in frequency,

wherein to encode the PPDU, the processing circuitry is further configured to;

for a plurality of spatial streams, distribute bits of the spatial streams to different segments;

for each of the segments;

determine modulated symbols based on the bits of the segment; and

interleave the modulated symbols.

15. The apparatus according to claim 14, the processing circuitry further configured to:

for each of the segments, map the modulated symbols to the REs of the segment for orthogonal frequency division multiplexing (OFDM) transmission.