TECHNIQUES FOR SPATIAL REUSE IN WIRELESS PERSONAL AREA NETWORKS BASED ON VIRTUAL TIME DIVISIONAL MULTIPLE ACCESS

• US 20120230311A1
• Filed: 05/18/2012
• Published: 09/13/2012
• Est. Priority Date: 06/12/2008
• Status: Active Grant

• Current Assignee: Alex Kessleman, Guoqing Li
• Original Assignee: Alex Kessleman, Guoqing Li
• Inventors: Li, Guoqing, KESSLEMAN, Alex
• Granted Patent: US 9,008,058 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

An embodiment of the present invention provides a method, comprising configuring a transceiver for special reuse using a virtual time division multiple access (TDMA) technique in a wireless personal area network that allows additional non-interfering transceivers to perform concurrent transmissions with said transceiver.

Claims

1-24. -24. (canceled)

25. A device comprising:

a transceiver configured to engage in a directional communication with a receiving device in a wireless network, wherein, to determine whether the directional communication between the transceiver and the receiving device interferes with another directional communication, the transceiver is further configured to;

receive a notification from a coordinator indicating one or more details of the other directional communication;

based on the one or more details, determine, for a predetermined amount of time, whether or not the transceiver receives at least part of data of the other directional communication; and

transmit, to the coordinator, a result of the determination,

wherein a determination result indicating that the transceiver received at least part of data of the other directional communication indicates possible interference between the directional communication and the other directional communication, and a determination result indicating that the transceiver did not receive at least part of data of the other directional communication indicates no interference between the directional communication and the other directional communication.

26. The device of claim 25, wherein based on the determination result, the coordinator is configured to manage compatibility information indicating possible simultaneous directional communication links in the wireless network.

27. The device of claim 25, wherein the one or more details of the other directional communication include time, data channel, or both, associated with the other directional communication.

28. The device of claim 25, wherein the transceiver is configured to receive the notification, transmit the determination result, or both, on a control channel which is independent of a data channel supporting the directional communication or the other directional communication.

29. The device of claim 25, wherein in order to maximize a number of simultaneous directional communication links in the wireless network, transceiver is further configured to decrease a transmission power, change a beam-steering pattern, or both, associated with the directional communication.

30. The device of claim 25, wherein the transceiver is configured to engage in the directional communication with only one receiving device at a time.

31. The device of claim 25, wherein the determination result is dependent on a beam-steering pattern, or a location, or both, of the transceiver.

32. A method comprising:

configuring a transceiver to engage in a directional communication with a receiving device in a wireless network; and

determining whether the directional communication between the transceiver and the receiving device interferes with another directional communication, said determining comprising;

receiving a notification from a coordinator indicating one or more details of the other directional communication;

based on the one or more details, determining, for a predetermined amount of time, whether or not the transceiver receives at least part of data of the other directional communication; and

transmitting, to the coordinator, a result of the determination,

wherein a determination result indicating that the transceiver received at least part of data of the other directional communication indicates possible interference between the directional communication and the other directional communication, and a determination result indicating that the transceiver did not receive at least part of data of the other directional communication indicates no interference between the directional communication and the other directional communication, and wherein the determination result is used to manage compatibility information indicating possible simultaneous directional communication links in the wireless network.

33. The method of claim 32, wherein the one or more details of the other directional communication include time, data channel, or both, associated with the other directional communication.

34. The method of claim 32, wherein said receiving a notification, said transmitting a determination result, or both utilize a control channel which is independent of a data channel supporting the directional communication or the other directional communication.

35. The method of claim 32, further comprising decreasing a transmission power, changing a beam-steering pattern, or both, associated with the directional communication in order to maximize a number of simultaneous directional communication links in the wireless network

36. The method of claim 32, wherein said configuring the transceiver to engage in the directional communication comprises configuring the transceiver to engage in the directional communication with only one receiving device at a time.

37. The method of claim 32, wherein the determination result is dependent on a beam-steering pattern, or a location, or both, of the transceiver.

38. A coordinating device comprising:

a memory; and

a processor configured to manage compatibility information indicating possible simultaneous non-interfering directional communication links in a wireless network, wherein to manage the compatibility information, the processor is further configured to;

transmit a notification to at least one transceiver in the wireless indicating one or more details of an existing directional communication in the wireless network;

receive, from the at least one transceiver, a result of a determination indicating whether or not the at least one transceiver received at least part of data of the existing directional communication which indicates whether or not interference is possible between a directional communication associated with the at least one transceiver and the existing directional communication; and

update the compatibility information in the memory based on the determination result.

39. The device of claim 38, wherein the one or more details of the existing directional communication include time, data channel, or both, associated with the existing directional communication.

40. The device of claim 38, wherein the processor is configured to transmit the notification, receive the determination result, or both, on a control channel which is independent of a data channel supporting the directional communication associated with the at least one transceiver or the existing directional communication

41. The device of claim 38, wherein the determination result is dependent on a beam-steering pattern, or a location, or both, of the at least one transceiver.

42. A method comprising:

managing compatibility information indicating possible simultaneous non-interfering directional communication links in a wireless network, said managing comprising;

transmitting a notification to at least one transceiver in the wireless network indicating one or more details of an existing directional communication in the wireless network;

receiving, from the at least one transceiver, a result of a determination indicating whether or not the at least one transceiver received at least part of data of the existing directional communication which indicates whether or not interference is possible between a directional communication associated with the at least one transceiver and the existing directional communication; and

updating the compatibility information based on the determination result.

43. The method of claim 42, wherein the one or more details of the existing directional communication include time, data channel, or both, associated with the existing directional communication.

44. The method of claim 42, wherein said transmitting a notification, said receiving a determination result, or both utilize a control channel which is independent of a data channel supporting the directional communication associated with the at least one transceiver or the existing directional communication.