Methods and apparatus for target transmission duration in multiple user uplink

• US 10,212,086 B2
• Filed: 08/26/2014
• Issued: 02/19/2019
• 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, Ding, Gang
• Primary Examiner(s): Rivas, Salvador E
• Application Number:
  US14/469,364
• Publication Number:
  US 20150063318A1
• Time in Patent Office: 1,638 Days
• 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 74/04 : 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

The disclosure provides methods and apparatuses for multiple user uplink. One aspect of the disclosure provides a method for wireless communication. The method comprises receiving a first wireless message from an access point indicating an uplink transmission opportunity and a target transmission duration for each of a plurality of user terminals including a first user terminal. The method also comprises changing a planned transmission duration of a second wireless message from the first user terminal to fit the target transmission duration. The method also comprises transmitting the second wireless message from the first user terminal over the target transmission duration.

Claims

1. A method for wireless communication, comprising:

receiving a first wireless message from an access point indicating an uplink transmission opportunity, a start time, and a target uplink transmission duration common for a plurality of user terminals including a first user terminal, wherein the first wireless message indicates that simultaneous uplink transmissions by the plurality of user terminals during the uplink transmission opportunity are each required to have a duration of the target uplink transmission duration;

adding an amount of fill data to a second wireless message sufficient to fit the target uplink transmission duration; and

transmitting, beginning at the indicated start time, the second wireless message from the first user terminal for the target uplink transmission duration at least partially simultaneously with another message transmitted by a second user terminal of the plurality of user terminals for the target uplink transmission duration.

2. The method of claim 1, wherein a transmission power level of the transmitted second wireless message and transmission power levels of the transmitted wireless messages from each of the plurality of user terminals are constant during the target uplink transmission duration.

3. The method of claim 1, wherein the fill data comprises at least one of an end of frame padding delimiter, a subframe pad octet, or an aggregated media access control protocol data unit end of file subframe.

4. The method of claim 3, wherein the at least one end of frame padding delimiter is added to an aggregated media access control protocol data unit of the second wireless message or an aggregated media access control service data unit of the second wireless message.

5. The method of claim 1, further comprising adjusting a transmission data rate employed for transmitting the second wireless message to fit the target transmission uplink duration.

6. The method of claim 1, further comprising adjusting a level of aggregation employed with the second wireless message to fit the target uplink transmission duration.

7. The method of claim 6, wherein the level of aggregation is adjusted in an aggregated media access control protocol data unit or an aggregated media access control service data unit of the second wireless message.

8. The method of claim 1, wherein the uplink transmission opportunity is determined during a setup phase.

9. The method of claim 1, wherein the second wireless message comprises a physical layer convergence protocol data unit.

10. A device for wireless communication, comprising:

a receiver configured to receive a first wireless message from an access point indicating an uplink transmission opportunity, a start time, and a target uplink transmission duration for a plurality of user terminals, wherein the first wireless message indicates that simultaneous uplink transmissions by the plurality of user terminals during the uplink transmission opportunity are each required to have a duration of the target uplink transmission duration;

a processor configured to add an amount of fill data to a second wireless message sufficient to fit the target uplink transmission duration; and

a transmitter configured to transmit, beginning at the indicated start time, the second wireless message for the target uplink transmission duration, at least partially simultaneously with another message transmitted by a second user terminal of the plurality of user terminals for the target uplink transmission duration.

11. The device of claim 10, wherein a transmission power level of the transmitted second wireless message and transmission power levels of the transmitted wireless messages from each of the plurality of user terminals are constant during the target uplink transmission duration.

12. The device of claim 10, wherein the fill data comprises at least one of an end of frame padding delimiter, a subframe pad octet, or an aggregated media access control protocol data unit end of file subframe.

13. The device of claim 12, wherein the at least one end of frame padding delimiter is added to an aggregated media access control protocol data unit of the second wireless message or an aggregated media access control service data unit of the second wireless message.

14. The device of claim 10, wherein the processor is further configured to adjust a transmission data rate employed for transmitting the second wireless message in response to the target uplink transmission duration.

15. The device of claim 10, wherein the processor is further configured to adjust a level of aggregation employed with the second wireless message in response to the target uplink transmission duration.

16. The device of claim 15, wherein the level of aggregation is adjusted in an aggregated media access control protocol data unit or an aggregated media access control service data unit of the second wireless message.

17. The device of claim 10, wherein the processor is further configured to determine the uplink transmission opportunity during a setup phase.

18. The device of claim 10, wherein the second wireless message comprises a physical layer convergence protocol data unit.

19. A method for wireless communication, comprising:

transmitting a first message to a first user terminal and a second user terminal, the first message indicating an uplink transmission opportunity, a start time, and a target uplink transmission duration common for a plurality of user terminals including the first and second user terminals, wherein the first message indicates that simultaneous uplink transmissions by the plurality of user terminals during the uplink transmission opportunity are each required to have a duration of the target uplink transmission duration; and

receiving, beginning at the start time and for the target uplink transmission duration indicated by the first message, second and third wireless messages from the first and second user terminals respectively, wherein the second wireless message includes an amount of fill data sufficient to fit the target uplink transmission duration.

20. The method of claim 19, wherein a power level of the received second wireless message and power levels of the received wireless messages from each of the plurality of user terminals are constant during the target uplink transmission duration.

21. A device for wireless communication, comprising:

a transmitter configured to transmit a first wireless message to a first user terminal and a second user terminal, the first message indicating an uplink transmission opportunity, a start time, and a target uplink transmission duration common for a plurality of user terminals including the first and second user terminals, wherein the first wireless message indicates that simultaneous uplink transmissions by the plurality of user terminals during the uplink transmission opportunity are each required to have a duration of the target uplink transmission duration; and

a receiver configured to receive, beginning at the start time and for the target uplink transmission duration indicated by the first wireless message, second and third wireless messages from the first and second user terminals respectively wherein the second wireless message includes an amount of fill data sufficient to fit the target uplink transmission duration.

22. The device of claim 21, wherein a power level of the received second wireless message and power levels of the received wireless messages from each of the plurality of user terminals are constant during the target uplink transmission duration.