Methods and apparatus for multiple user uplink

• US 9,923,822 B2
• Filed: 08/26/2014
• Issued: 03/20/2018
• Est. Priority Date: 08/28/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Merlin, Simone, Barriac, Gwendolyn Denise, Sampath, Hemanth, Vermani, Sameer
• Primary Examiner(s): CHOUDHRY, SAMINA F
• Application Number:
  US14/469,306
• Publication Number:
  US 20150063258A1
• Time in Patent Office: 1,302 Days
• Field of Search: 370329
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/2621 using frequency division multiple access [FDMA] H04B7/2615 takes precedence
• CPC Class Codes: H04L 1/0008 by supplementing frame payload, e.g. with padding bits
• CPC Class Codes: H04L 1/0031 Multiple signaling transmission H04L1/1664, F15 take precedence
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1621 Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/24 Traffic characterised by specific attributes, e.g. priority or QoS
• CPC Class Codes: H04L 47/72 using reservation actions during connection setup
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04N 7/17309 : Transmission or handling of upstream communications
• CPC Class Codes: H04W 28/06 : Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/24 : Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
• CPC Class Codes: H04W 52/146 : Uplink power control
• CPC Class Codes: H04W 52/50 : at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 : Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/121 : for groups of terminals or users
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/002 : Transmission of channel access control information
• CPC Class Codes: H04W 74/006 : in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/008 : with additional processing of random access related information at receiving side
• CPC Class Codes: H04W 74/04 : Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/08 : Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 74/0816 : with collision avoidance
• CPC Class Codes: H04W 74/085 : collision avoidance
• CPC Class Codes: H04W 8/04 : Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

A method for wireless communication is provided. The method comprises transmitting a first wireless message comprising a request for a first user terminal to transmit uplink data and an indication of at least one requested operational parameter. The method also comprises receiving a second wireless message from an access point in response to the first wireless message, the second wireless message indicating whether a plurality of user terminals including the first user terminal is selected to transmit uplink data, the second wireless message indicating at least one operational parameter for transmission of uplink data based on the at least one requested operational parameter.

Claims

1. A method for wireless communication, comprising:

transmitting, by a first user terminal, at a transmission power level, a first wireless message comprising a request for the first user terminal to transmit uplink data and an indication of at least one requested operational parameter, the first wireless message further indicating the transmission power level; and

receiving by the first user terminal, a second wireless message from an access point in response to the first wireless message, the second wireless message indicating which user terminals of a plurality of user terminals including the first user terminal is selected to transmit uplink data, the second wireless message indicating at least one operational parameter for transmission of uplink data based on the at least one requested operational parameter, the second wireless message further comprising a power back-off indication, the power back-off indication based on the transmission power level of the first wireless message.

2. The method of claim 1, wherein the request for the first user terminal to transmit uplink data comprises a request for an uplink multiuser multiple-input multiple-output transmission opportunity.

3. The method of claim 1, wherein the at least one requested operational parameter comprises a transmission time requested for the uplink data.

4. The method of claim 3, wherein the estimated transmission time parameter indicates a time duration for an uplink multiuser multiple-input multiple-output transmission opportunity.

5. The method of claim 3, wherein the estimated transmission time parameter indicates a time duration required for the first user terminal to transmit the uplink data at a planned modulation and coding scheme.

6. The method of claim 3, wherein the at least one operational parameter for transmission of uplink data comprises an uplink duration parameter indicating an uplink transmission duration for the plurality of user terminals to transmit uplink data, the uplink transmission duration based on the estimated transmission time.

7. The method of claim 1, wherein the at least one requested operational parameter indicates, a user terminal operating mode, a contention parameter, a number of spatial streams to employ for uplink data transmission, a time adjustment compared to the reception of the second wireless message for starting uplink transmissions a channel for uplink transmissions, a traffic identifier, a transmission mode, and per-traffic identifier queue information.

8. The method of claim 1, further comprising transmitting the uplink data by the first user terminal in an uplink multiuser multiple-input multiple-output transmission concurrently with the user terminals of the plurality of user terminals selected to transmit uplink data.

9. The method of claim 1, wherein the first wireless message comprises a request to transmit frame, a request to send frame, a data frame, a quality of service frame, or a power save poll frame.

10. The method of claim 1, wherein the second wireless message comprises a clear to transmit message.

11. The method of claim 1, wherein the at least one operational parameter identifies a start time for the uplink transmission that is immediately following the second wireless message.

12. The method of claim 1, wherein the second wireless message acknowledges the reception of the first wireless message but does not select the first user terminal to transmit uplink data.

13. The method of claim 1, wherein the second wireless message acknowledges the reception of the first wireless message and grants the first user terminal an uplink transmission at a delayed start time.

31. The method of claim 7, wherein the at least one operational parameter indicates a user terminal operating mode, the operating mode indicating whether the first user terminal initiates an uplink during a time interval indicated by the access point or initiates an uplink based on a contention protocol.

32. The method of claim 7, wherein the at least one operational parameter indicates a number of spatial streams to employ for uplink transmission.

33. The method of claim 7, wherein the at least one operational parameter indicates a channel for uplink transmissions.

34. The method of claim 7, wherein the at least one operational parameter indicates a traffic identifier for uplink transmissions.

35. The method of claim 34, wherein the at least one operational parameter indicates per-traffic identifier queue information.

36. The method of claim 1, wherein the second wireless message indicates a time adjustment relative to the reception of the second wireless message for starting uplink transmissions.

14. A device for wireless communication, comprising:

a transmitter configured to transmit, at a transmission power level, a first wireless message comprising a request for a first user terminal to transmit uplink data and an indication of at least one requested operational parameter, the first wireless message further indicating the transmission power level; and

a receiver configured to receive a second wireless message from an access point in response to the first wireless message, the second wireless message indicating which user terminals of a plurality of user terminals including the first user terminal is selected to transmit uplink data, the second wireless message indicating at least one operational parameter for transmission of uplink data based on the at least one requested operational parameter, the second wireless message further comprising a power back-off indication, the power back-off indication based on the transmission power level of the first wireless message.

15. The device of claim 14, wherein the request for the first user terminal to transmit uplink data comprises a request for an uplink multiuser multiple-input multiple-output transmission opportunity.

16. The device of claim 14, wherein the at least one requested operational parameter comprises a transmission time requested for the uplink data.

17. The device of claim 16, wherein the estimated transmission time parameter indicates a time duration for an uplink multiuser multiple-input multiple-output transmission opportunity.

18. The device of claim 16, wherein the estimated transmission time parameter indicates a time duration required for the first user terminal to transmit the uplink data at a planned modulation and coding scheme.

19. The device of claim 16, wherein the at least one operational parameter for transmission of uplink data comprises an uplink duration parameter indicating an uplink transmission duration for the plurality of user terminals to transmit uplink data, the uplink transmission duration based on the estimated transmission time.

20. The device of claim 14, wherein the at least one requested operational parameter indicates a user terminal operating mode, a contention parameter, a number of spatial streams to employ for uplink data transmission, a time adjustment compared to the reception of the second wireless message for starting uplink transmissions, a channel for uplink transmissions, a traffic identifier, a transmission mode, and per-traffic identifier queue information.

21. The device of claim 14, wherein the transmitter is further configured to transmit the uplink data in an uplink multiuser multiple-input multiple-output transmission concurrently with the user terminals of the plurality of user terminals selected to transmit uplink data.

22. The device of claim 14, wherein the first wireless message comprises a request to transmit frame, a request to send frame, a data frame, a quality of service frame, or a power save poll frame.

23. The device of claim 14, wherein the second wireless message comprises a clear to transmit message.

24. The device of claim 14, wherein the at least one operational parameter identifies a start time for the uplink transmission that is immediately following the second wireless message.

25. The device of claim 14, wherein the second wireless message acknowledges the reception of the first wireless message but does not select the first user terminal to transmit uplink data.

26. The device of claim 14, wherein the second wireless message acknowledges the reception of the first wireless message and grants the first user terminal an uplink transmission at a delayed start time.

27. A method for wireless communication, comprising:

receiving a first wireless message comprising a request for a first user terminal to transmit uplink data and an indication of at least one requested operational parameter, the first wireless message further comprising an indication of a transmission power level of the first wireless message;

determining a power backoff indication based on the transmission power level; and

transmitting a second wireless message in response to the first wireless message, the second wireless message indicating which user terminals of a plurality of user terminals including the first user terminal is selected to transmit uplink data, the second wireless message indicating at least one operational parameter for transmission of uplink data based on the at least one requested operational parameter, the second wireless message further comprising the power backoff indication.

28. The method of claim 27, wherein the at least one requested operational parameter comprises an estimated transmission time parameter indicating a time duration required for the first user terminal to transmit the uplink data and the at least one operational parameter for transmission of the uplink data comprises an uplink duration parameter indicating an uplink transmission duration for the plurality of user terminals to transmit uplink data, the uplink transmission duration based on the estimated transmission time.

29. A device for wireless communication, comprising:

a receiver configured to receive a first wireless message comprising a request for a first user terminal to transmit uplink data and an indication of at least one requested operational parameter, the first wireless message further comprising an indication of a transmission power level of the first wireless message;

determining a power backoff indication based on the transmission power level; and

a transmitter configured to transmit a second wireless message in response to the first wireless message, the second wireless message indicating which user terminals of a plurality of user terminals including the first user terminal is selected to transmit uplink data, the second wireless message indicating at least one operational parameter for transmission of uplink data based on the at least one requested operational parameter, the second wireless message further comprising the power backoff indication.

30. The device of claim 29, wherein the at least one requested operational parameter comprises an estimated transmission time parameter indicating a time duration required for the first user terminal to transmit the uplink data and the at least one operational parameter for transmission of the uplink data comprises an uplink duration parameter indicating an uplink transmission duration for the plurality of user terminals to transmit uplink data, the uplink transmission duration based on the estimated transmission time.