METHOD AND APPARATUS FOR MULTIPLE-USER COMMUNICATION IN A CLIENT INITIATED COMMUNICATION TRANSMISSION SCHEME

• US 20110051647A1
• Filed: 10/28/2009
• Published: 03/03/2011
• Est. Priority Date: 08/25/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Abraham, Santosh P., Merlin, Simone, Sampath, Hemanth, Wentink, Maarten Menzo
• Granted Patent: US 8,665,767 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• 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 1/1621 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 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/0816 with collision avoidance

Abstract

An apparatus is disclosed having a receiver configured to receive a request to transmit data from a wireless node in a plurality of wireless nodes; and a transmitter configured to transmit a multi-cast message to a set of wireless nodes in the plurality of wireless nodes to permit data transmission. A method for wireless communications is also disclosed.

Claims

1. A method for wireless communications comprising:

receiving a request to transmit data from a wireless node in a plurality of wireless nodes; and

transmitting a multi-cast message to a set of wireless nodes in the plurality of wireless nodes to permit data transmission.

2. The method of claim 1, wherein the request is received as part of a medium access contention process.

3. The method of claim 2, wherein the medium access contention process comprises an EDCA-based access contention.

4. The method of claim 1, wherein the multi-cast message comprises a confirmation for at least one wireless node in the set of wireless nodes to permit data transmission.

5. The method of claim 4, wherein the confirmation comprises a medium reservation for the at least one wireless node in the set of wireless nodes to perform a transmission operation.

6. The method of claim 4, wherein the confirmation comprises a maximum duration that the at least one wireless node in the set of wireless nodes to perform a transmission operation.

7. The method of claim 1, further comprising choosing the wireless nodes in the set of wireless nodes based on at least one of available communication resources or QoS requirements.

8. The method of claim 1, further comprising transmitting a request for channel training information to the set of wireless nodes, said set comprising the wireless node.

9. The method of claim 8, further comprising receiving the channel training information.

10. The method of claim 1, wherein the multi-cast message comprises at least one of a spatial stream value, a MCS value or a power offset value.

11. The method of claim 1, further comprising receiving data transmissions from the wireless node and at least one of the wireless nodes in the set of wireless nodes.

12. The method of claim 11, further comprising transmitting a block acknowledgment message to the wireless node and the at least one of the wireless nodes in the set of wireless nodes.

13. The method of claim 11, wherein the received data transmissions were simultaneously transmitted.

14. An apparatus for wireless communications, comprising:

a processing system configured to;

receive a request to transmit data from a wireless node in a plurality of wireless nodes; and

transmit a multi-cast message to a set of wireless nodes in the plurality of wireless nodes to permit data transmission.

15. The apparatus of claim 14, wherein the request is received as part of a medium access contention process.

16. The apparatus of claim 15, wherein the medium access contention process comprises an EDCA-based access contention.

17. The apparatus of claim 14, wherein the multi-cast message comprises a confirmation for at least one wireless node in the set of wireless nodes to permit data transmission.

18. The apparatus of claim 17, wherein the confirmation comprises a medium reservation for the at least one wireless node in the set of wireless nodes to perform a transmission operation.

19. The apparatus of claim 17, wherein the confirmation comprises a maximum duration that the at least one wireless node in the set of wireless nodes can perform a transmission operation.

20. The apparatus of claim 14, wherein the processing system is further configured to choose the wireless nodes in the set of wireless nodes based on at least one of available communication resources or QoS requirements.

21. The apparatus of claim 14, wherein the processing system is further configured to transmit a request for channel training information to the set of wireless nodes, the set comprising the wireless node.

22. The apparatus of claim 21, wherein the processing system is further configured to receive the channel training information.

23. The apparatus of claim 14, wherein the multi-cast message comprises at least one of a spatial stream value, a MCS value or a power offset value.

24. The apparatus of claim 14, wherein the processing system is further configured to receive data transmissions from the wireless node and at least one of the wireless nodes in the set of wireless nodes.

25. The apparatus of claim 24, wherein the processing system is further configured to transmit a block acknowledgment message to the wireless node and the at least one of the wireless nodes in the set of wireless nodes.

26. The apparatus of claim 24, wherein the received data transmissions were simultaneously transmitted.

27. An apparatus for wireless communications, comprising:

means for receiving a request to transmit data from a wireless node in a plurality of wireless nodes; and

means for transmitting a multi-cast message to a set of wireless nodes in the plurality of wireless nodes to permit data transmission.

28. The apparatus of claim 27, wherein the request is received as part of a medium access contention process.

29. The apparatus of claim 28, wherein the medium access contention process comprises an EDCA-based access contention.

30. The apparatus of claim 27, wherein the multi-cast message comprises a confirmation for at least one wireless node in the set of wireless nodes to permit data transmission.

31. The apparatus of claim 30, wherein the confirmation comprises a medium reservation for the at least one wireless node in the set of wireless nodes to perform a transmission operation.

32. The apparatus of claim 30, wherein the confirmation comprises a maximum duration that the at least one wireless node in the set of set of wireless nodes to perform a transmission operation.

33. The apparatus of claim 27, further comprising means for choosing the wireless nodes in the set of wireless nodes based on at least one of available communication resources or QoS requirements.

34. The apparatus of claim 27, further comprising means for transmitting a request for channel training information to the set of wireless nodes, the set comprising the wireless node.

35. The apparatus of claim 34, further comprising means for receiving the channel training information.

36. The apparatus of claim 27, wherein the multi-cast message comprises at least one of a spatial stream value, a MCS value or a power offset value.

37. The apparatus of claim 27, further comprising means for receiving data transmissions from the wireless node and at least one of the wireless nodes in the set of wireless nodes.

38. The apparatus of claim 37, further comprising means for transmitting a block acknowledgment message to the wireless node and the at least one of the wireless nodes in the set of wireless nodes.

39. The apparatus of claim 37, wherein the received data transmissions were simultaneously transmitted.

40. A computer-program product for wireless communications, comprising:

a machine-readable medium comprising instructions executable to;

receive a request to transmit data from a wireless node in a plurality of wireless nodes; and

transmit a multi-cast message to a set of wireless nodes in the plurality of wireless nodes to permit data transmission.

41. An access point, comprising:

one or more antennas;

a receiver configured to receive a request to transmit data from a wireless node in a plurality of wireless nodes via the one or more antennas; and

a transmitter configured to transmit a multi-cast message to other wireless nodes in the plurality of wireless nodes to permit data transmission.

42. A method for wireless communications comprising:

contending for access to a medium with a plurality of other wireless nodes;

receiving a multi-cast message permitting data transmission to a set of wireless nodes; and

transmitting data based on the multi-cast message.

43. The method of claim 42, further comprising receiving a block acknowledgement based on the transmission of data.

44. The method of claim 43, wherein the multi-cast message comprises a transmission duration time and wherein the method further comprising waiting for the block acknowledgment for a predetermined period of time that is based on the transmission duration time.

45. An apparatus for wireless communications comprising:

a processing system configured to;

contend for access to a medium with a plurality of other wireless nodes;

receive a multi-cast message permitting data transmission to a set of wireless nodes; and

transmit data based on the multi-cast message.

46. The apparatus of claim 45, wherein the processing system is further configured to receive a block acknowledgement based on the transmission of data.

47. The apparatus of claim 46, wherein the multi-cast message comprises a transmission duration time and wherein the processing system is further configured to wait for the block acknowledgment for a predetermined period of time that is based on the transmission duration time.

48. An apparatus for wireless communications comprising:

means for contending for access to a medium with a plurality of other wireless nodes;

means for receiving a multi-cast message permitting data transmission to a set of wireless nodes; and

means for transmitting data based on the multi-cast message.

49. A computer-program product for wireless communications, comprising:

a machine-readable medium comprising instructions executable to;

receive a request to transmit data from a wireless node in a plurality of wireless nodes; and

transmit a multi-cast message to a set of wireless nodes in the plurality of wireless nodes to permit data transmission.

50. A station, comprising:

an antenna;

a processor, coupled to the antenna, configured to contend for access to a medium with a plurality of other wireless nodes using the antenna;

a receiver configured to receive a multi-cast message permitting data transmission to a set of wireless nodes; and

a transmitter configured to transmit data based on the multi-cast message.