SYSTEMS AND METHODS FOR MULTIUSER INTERLEAVING AND MODULATION

• US 20180234118A1
• Filed: 10/02/2015
• Published: 08/16/2018
• Est. Priority Date: 10/03/2014
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Xi, Fengjun, Jin, Yuan Sheng, Xia, Pengfei, Oteri, Oghenekome, Lou, Hanqing, Shah, Nirav B., Olesen, Robert L.
• Granted Patent: US 10,312,950 B2
• Time in Patent Office: Days
• CPC Class Codes: H03M 13/27 using interleaving techniques
• CPC Class Codes: H03M 13/2707 Simple row-column interleaver, i.e. pure block interleaving
• CPC Class Codes: H04B 1/02 Transmitters
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Methods, systems, and apparatuses are disclosed for transmitting a plurality of bits to an access point (AP) and receiving constellation symbol from the AP. A constellation symbol may include a plurality of indications of bits. Each indication of the plurality of indications of bits may be associated with a respective wireless transmit/receive unit (WTRU) of a plurality of WTRUs. The plurality of indications of bits may include indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

Claims

1. A method comprising:

transmitting, from a wireless transmit/receive unit (WTRU), a plurality of bits to an access point (AP);

receiving, at the WTRU, a constellation symbol from the AP,

wherein the constellation symbol comprises a plurality of indications of bits,

wherein each indication of the plurality of indications of bits is associated with a respective WTRU of a plurality of WTRUs,

wherein each indication of the plurality of indications of bits is associated with a weight,

wherein a first weight associated with a first indication of the plurality of indications of bits is different than a second weight associated with a second indication of the plurality of indications of bits, and

wherein the plurality of indications of bits comprises indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

2. The method of claim 1, wherein the plurality of indications of bits comprises indications of bits modulated at one of an open loop MU-CBDMAM or a closed loop MU-CBDMAM.

3. The method of claim 1, wherein each indication of the plurality of indications of bits is associated with a weighting that differs from weightings associated with each other indication of the indications of bits.

4. The method of claim 1, wherein the constellation symbol is associated with one of a uniform constellation or a non-uniform constellation.

5. The method of claim 1, further comprising receiving a first MU-CBDMAM information element (IE) indicating a capability of the AP.

6. The method of claim 5, wherein the first MU-CBDMAM IE is comprised in a beacon.

7. The method of claim 1, further comprising transmitting an association request to the AP comprising a second MU-CBDMAM IE.

8. The method of claim 1, further comprising receiving a first data frame associated with one of an open loop MU-CBDMAM or a closed loop MU-CBDMAM.

9. The method of claim 1, further comprising transmitting a feedback control frame to the AP comprising that comprises at least one of an acknowledgement (ACK), an indicator of channel state information (CSI), and an indication of a signal-to-noise ratio (SNR).

10. The method of claim 1, further comprising receiving an MU-CBDMAM transmission opportunity (TXOP) end frame.

11. A wireless transmit/receive unit (WTRU) comprising:

a transceiver configured to transmit a plurality of bits to an access point (AP);

the transceiver further configured to receive a constellation symbol from the AP,

wherein the constellation symbol comprises a plurality of indications of bits,

wherein each indication of the plurality of indications of bits is associated with a respective WTRU of a plurality of WTRUs,

wherein each indication of the plurality of indications of bits is associated with a weight,

wherein a first weight associated with a first indication of the plurality of indications of bits is different than a second weight associated with a second indication of the plurality of indications of bits, and

wherein the plurality of indications of bits comprises indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

12. The WTRU of claim 11, wherein the plurality of indications of bits comprises indications of bits modulated at one of an open loop MU-CBDMAM or a closed loop MU-CBDMAM.

13. The WTRU of claim 11, wherein each indication of the plurality of indications of bits is associated with a weighting that differs from weightings associated with each other indication of the indications of bits.

14. The WTRU of claim 11, wherein the constellation symbol is associated with one of a uniform constellation or a non-uniform constellation.

15. The WTRU of claim 11, wherein the transceiver is further configured to receive a first MU-CBDMAM information element (IE) indicating a capability of the AP.

16. The WTRU of claim 15, wherein the first MU-CBDMAM IE is comprised in a beacon.

17. The WTRU of claim 11, wherein the transceiver is further configured to transmit an association request to the AP comprising a second MU-CBDMAM IE.

18. The WTRU of claim 11, wherein the transceiver is further configured to receive a first data frame associated with one of an open loop MU-CBDMAM or a closed loop MU-CBDMAM.

19. The WTRU of claim 11, wherein the transceiver is further configured to transmit a feedback control frame to the AP comprising that comprises at least one of an acknowledgement (ACK), an indicator of channel state information (CSI), and an indication of a signal-to-noise ratio (SNR).

20. The WTRU of claim 11, wherein the transceiver is further configured to receive an MU-CBDMAM transmission opportunity (TXOP) end frame.