Enhancements for coordinated orthogonal block-based resource allocation (cobra) in wlan systems

Patent metadata

Field	Value
Publication number	US-2016255656-A1
Application number	US-201415026666-A
Country	US
Kind code	A1
Filing date	Oct 1, 2014
Priority date	Oct 1, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

A method for use in an IEEE 802.11 station (STA) for receiving data from an IEEE 802.11 access point (AP) via a coordinated orthogonal block resource allocation (COBRA) is described. The STA may receive a COBRA schedule from the AP and transmit an acknowledgement (ACK) to the AP in the COBRA TXOP. The STA may receive a first data packet in the COBRA TxOP based on the COBRA schedule. The STA may determine whether the first data packet is received successfully and on a condition that the first data packet is not received successfully, the STA may transmit a negative acknowledgement (NACK) to the AP in the COBRA TxOP.

First claim

1 . A method for use in an IEEE 802.11 station (STA) for receiving data from an IEEE 802.11 access point (AP) via a coordinated orthogonal block resource allocation (COBRA), the method comprising:
receiving a first multi-user (MU) transmission including a COBRA schedule from the AP at a beginning of a COBRA transmission opportunity (TxOP), wherein the COBRA TxOP is a reservation of a wireless medium for the STA and at least one other STA, via carrier sense multiple access (CSMA); transmitting an acknowledgement (ACK) to the AP in the COBRA TXOP in response to the received COBRA schedule; receiving a second MU transmission including a first data packet and at least one other data packet for the at least one other STA in the COBRA TxOP based on the COBRA schedule; determining whether the first data packet is received successfully; on a condition that the first data packet is not received successfully, transmitting a negative acknowledgement (NACK) to the AP in the COBRA TxOP; and receiving, a third MU transmission including a second data packet in the COBRA TxOP, wherein the second data packet is a retransmission of the first data packet.

2 . The method of claim 1 , wherein the COBRA schedule includes frequency allocation information identifying a respective frequency portion of an available frequency bandwidth allocated to the STA and the at least one other STA for reception of data from the AP.

3 . The method of claim 1 , wherein the COBRA schedule includes an indication of a time within the COBRA TxOP when the STA and the at least one other STA are scheduled to receive the first data packet.

4 . The method of claim 1 , wherein the COBRA schedule includes information associated with a plurality of data packets to be received in the COBRA TxOP.

5 . The method of claim 1 , wherein on a condition that the first packet is not decodable by the IEEE 802.11 STA, it is determined to not be received successfully.

6 - 13 . (canceled)

14 . An IEEE 802.11 station (STA) capable of receiving data from an IEEE 802.11 access point (AP) via a coordinated orthogonal block resource allocation (COBRA), the STA comprising:
a receiver configured to receive a first multi-user (MU) transmission including a COBRA schedule from the AP at a beginning of a COBRA transmission opportunity (TxOP), wherein the COBRA TxOP is a reservation of a wireless medium for the STA and at least one other STA, via carrier sense multiple access (CSMA); a transmitter configured to transmit an acknowledgement (ACK) to the AP in the COBRA TXOP in response to the received COBRA schedule; the receiver further configured to receive a second MU transmission including a first data packet and at least one other data packet for the at least one other STA in the COBRA TxOP based on the COBRA schedule; a processor configured to determine whether the first data packet is received successfully; on a condition that the first data packet is not received successfully, the transmitter is further configured to transmit a negative acknowledgement (NACK) to the AP in the COBRA TxOP; and the receiver is further configured to receive a third MU transmission including a second data packet in the COBRA TxOP, wherein the second data packet is a retransmission of the first data packet.

15 . The STA of claim 14 , wherein the COBRA schedule includes frequency allocation information identifying a respective frequency portion of an available frequency bandwidth allocated to the STA and the at least one other STA for reception of data from the AP.

16 . The STA of claim 14 , wherein the COBRA schedule includes an indication of a time within the COBRA TxOP when the STA and the at least one other STA are scheduled to receive the first data packet.

17 . The STA of claim 14 , wherein the COBRA schedule includes information associated with a plurality of data packets to be received in the COBRA TxOP.

18 . The STA of claim 14 , wherein on a condition that the first packet is not decodable by the IEEE 802.11 STA, it is determined to not be received successfully.

19 - 20 . (canceled)

21 . The method of claim 1 , wherein the COBRA schedule includes a modulation and coding scheme (MCS) assignment for the STA and the at least one other STA.

22 . The method of claim 1 , wherein the COBRA schedule includes a spatial stream allocation for the STA and the at least one other STA.

23 . The STA of claim 14 , wherein the COBRA schedule includes a modulation and coding scheme (MCS) assignment for the STA and the at least one other STA.

24 . The STA of claim 14 , wherein the COBRA schedule includes a spatial stream allocation for the STA and the at least one other STA.

Assignees

• Interdigital Patent Holdings Inc

Inventors

• Lou Hanqing
• Zhang Guodong
• Wang Xiaofei
• Fang Juan
• Oteri Oghenekome
• Xia Pengfei
• Ghosh Monisha
• Olesen Robert L

Classifications

• H04L1/16

  in which the return channel carries supervisory signals, e.g. repetition request signals · CPC title

• H04L1/1887

  Scheduling and prioritising arrangements · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04L1/1671

  the supervisory signal being transmitted together with control information · CPC title

• H04L1/1664

  the supervisory signal being transmitted together with payload signals; piggybacking · CPC title