Methods and apparatus for acquiring and using multiple connection identifiers

• US 9,084,231 B2
• Filed: 03/13/2008
• Issued: 07/14/2015
• Est. Priority Date: 03/13/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Li, Junyi, Laroia, Rajiv, Tavildar, Saurabh, Wu, Xinzhou
• Primary Examiner(s): SMARTH, GERALD A
• Application Number:
  US12/047,741
• Publication Number:
  US 20090232086A1
• Time in Patent Office: 2,679 Days
• Field of Search: 370431-436, 370441-444, 370/330
• US Class Current: 1/1
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Methods and apparatus related to a peer to peer wireless communications system supporting the association of multiple connection identifiers with a single connection between a pair of wireless terminals are described. A differentiated quality of service is supported by assigning different numbers of connection identifiers to different connections. The number of connection identifiers assigned to a wireless terminal pair for a connection is a function of one of: data rate, priority information, and quality of service information. Being allocated a higher number of connection identifiers results in being allocated a higher number of traffic transmission request resources, thus increasing the likelihood that the connection is permitted to use a traffic transmission segment. The allocation of connection identifiers is performed in a distributed manner in which handshake signaling occurs between a wireless terminal pair seeking to establish a connection, e.g., as part of a multi-step paging scheme.

Claims

1. A method of operating a first peer communications device to communicate with a second peer communications device, in a system supporting multiple peer to peer connections, the method comprising:

monitoring, by the first peer communications device, a connection identifier broadcast interval to identify unused connection identifiers of a set of connection identifiers associated with one or more symbols and tones for peer to peer connections, each connection identifier in the set of connection identifiers for identifying a peer to peer connection between the first and the second peer communications devices;

transmitting, by the first peer communications device, a set of available and unused connection identifiers from the identified unused connection identifiers for peer to peer connections to the second peer communications device; and

receiving, by the first peer communications device, from the second peer communications device a subset of said transmitted set of available and unused connection identifiers, said subset of connection identifiers including identifiers to be used for peer to peer connection between said first and second peer communications devices.

2. The method of claim 1, further comprising:

using, by the first peer communications device, a connection identifier included in said received subset to communicate with said second peer communications device.

3. The method of claim 1, wherein said peer to peer connection is a bi-directional connection.

4. The method of claim 1, wherein said received subset includes multiple connection identifiers corresponding to a single communications link between said first and second peer communications devices.

5. The method of claim 4, wherein different traffic transmission resources are associated with different connection identifiers, the different traffic transmission resources having different priorities.

6. The method of claim 1, wherein said connection identifier broadcast interval is an interval during which peer communications devices having existing active connections broadcast connection identifier information indicating connection identifiers the peer communications devices are using.

7. The method of claim 1, wherein said connection identifiers are orthogonal media access control (MAC) identifiers.

8. The method of claim 1, wherein the monitoring, by the first peer communications device, the connection identifier broadcast interval comprises receiving, by the first peer communications device, broadcasted used connection identifiers of the set of connection identifiers, wherein the unused connection identifiers are identified based on the received broadcasted used connection identifiers.

9. The method of claim 1, wherein the one or more of the symbols and the tones are associated with orthogonal frequency division multiplexing (OFDM).

10. A method of operating a first communications device to communicate with a second device, in a system supporting multiple communications connections, the method comprising:

monitoring a connection identifier broadcast interval to identify unused connection identifiers;

transmitting a set of available connection identifiers from the identified unused connection identifiers to the second device;

receiving from the second device a subset of said transmitted set of available connection identifiers, said subset of connection identifiers including identifiers to be used for a communications connection between said first and second devices, wherein said received subset includes multiple connection identifiers corresponding to a single communications link between said first and second devices; and

transmitting a traffic transmission request to the second device using the highest priority traffic transmission resource which corresponds to one of said received subset of multiple connection identifiers,

wherein different traffic transmission resources are associated with different connection identifiers, the different traffic transmission resources having different priorities.

11. The method of claim 10, further comprising;

receiving a transmission request echo from the second device on a transmission request echo resource corresponding to traffic transmission resource used to transmit the traffic transmission request; and

transmitting data to the second device during a traffic interval corresponding to the transmitted traffic request.

12. The method of claim 11, wherein said transmission request resources are tone symbols in a set of time—

frequency resources.

13. The method of claim 10, further comprising:

determining a new mapping of transmission request resources to connection identifiers; and

transmitting another traffic transmission request to the second device using the highest priority traffic transmission resource which corresponds to one of said received subset of multiple connection identifiers as determined during said mapping operation.

14. A first peer communications device comprising:

a connection identifier monitoring module configured to monitor a connection identifier broadcast interval to identify unused connection identifiers of a set of connection identifiers associated with one or more symbols and tones for peer to peer connections, each connection identifier in the set of connection identifiers for identifying a peer to peer connection between two peer communications devices;

a connection availability signal generation module configured to generate a signal conveying information identifying a set of available and unused connection identifiers for peer to peer connections;

a wireless transmitter module configured to transmit said generated signal conveying information identifying a set of available and unused connection identifiers for peer to peer connections to a second peer communications device; and

a wireless receiver module configured to receive from the second peer communications device information indicating a subset of said transmitted set of available and unused connection identifiers, said subset of connection identifiers including identifiers to be used for a peer to peer connection between said first and second peer communications devices.

15. The first peer communications device of claim 14, wherein the connection identifier monitoring module is configured to detect signals received during the connection identifier broadcast interval and for determining unused connection identifiers, said set of available connection identifiers including connection identifiers indicated by signals received during said connection identifier broadcast interval to be unused connection identifiers.

16. The first peer communications device of claim 15, further comprising:

a peer communications control module configured to use a connection identifier included in said received subset to communicate with said second peer communications device over a connection.

17. The first peer communications device of claim 16, wherein said connection is a bi-directional connection.

18. The first peer communications device of claim 15, wherein said subset includes multiple connection identifiers corresponding to a single communications link between said first and second peer communications devices.

19. The first peer communications device of claim 18, further including a memory and wherein the memory includes information associating different traffic transmission resources with different connection identifiers, the different traffic transmission resources having different priorities.

20. The first peer communications device of claim 14, further comprising:

a connection availability response signal recovery module configured to identify said subset of connection identifiers from the received information.

21. The first peer communications device of claim 14, wherein said connection identifier broadcast interval is an interval during which peer communications devices having existing active connections broadcast connection identifier information indicating connection identifiers the peer communications devices are using.

22. A first communications device comprising:

a connection availability signal generation module configured to generate a signal conveying information identifying a set of available connection identifiers;

a wireless transmitter module configured to transmit said generated signal conveying information identifying a set of available connection identifiers to a second device;

a wireless receiver module configured to receive from the second device information indicating a subset of said transmitted set of available connection identifiers, said subset of connection identifiers including identifiers to be used for a communications connection between said first and second devices, wherein said subset includes multiple connection identifiers corresponding to a single communications link between said first and second devices;

a connection identifier monitoring module configured to detect signals received during a connection identifier broadcast interval and for determining unused connection identifiers, said set of available connection identifiers including connection identifiers indicated by signals received during said connection identifier broadcast interval to be unused connection identifiers;

a memory and wherein the memory includes information associating different traffic transmission resources with different connection identifiers, the different traffic transmission resources having different priorities;

a traffic transmission request signal generation module configured to generate a traffic transmission request to the second device;

a resource selection module configured to use the highest priority traffic transmission resource which corresponds to one of said received subset of multiple connection identifiers; and

wherein the wireless transmitter module is also configured to transmit the generated traffic transmission request signal to the second device using the selected highest priority traffic transmission resource.

23. The first communications device of claim 22,

wherein said wireless receiver module is also configured to receive a transmission request echo from the second device on a transmission request response resource corresponding to traffic transmission resource used to transmit the traffic transmission request;

and

wherein the first communications device further comprises;

a request response monitoring module configured to monitor the transmission request response resource to detect the reception of the transmission request echo from the second device; and

a traffic data control module configured to control the transmitter module to transmit data to the second device during a traffic interval corresponding to the transmitted traffic request.

24. The first communications device of claim 23, wherein said transmission request resources are tone symbols in a set of time—

frequency resources.

25. The first communications device of claim 22, further comprising:

a connection identifier to transmission resource mapping module configured to determine a mapping of transmission request resources to connection identifiers for a first time interval and a second time interval, the first and second time intervals being different; and

wherein the mapping between transmission request resources and connection identifiers changes between the first and second time intervals.

26. A first peer communications device comprising:

connection identifier monitoring means for monitoring a connection identifier broadcast interval to identify unused connection identifiers of a set of connection identifiers associated with one or more symbols and tones for peer to peer connections, each connection identifier in the set of connection identifiers for identifying a peer to peer connection between two peer communications devices;

connection availability signal generation means for generating a signal conveying information identifying a set of available and unused connection identifiers for peer to peer connections;

wireless transmitter means for transmitting said generated signal conveying information identifying a set of available and unused connection identifiers for peer to peer connections to a second peer communications device; and

wireless receiver means for receiving from the second peer communications device information indicating a subset of said transmitted set of available and unused connection identifiers for peer to peer connections, said subset of connection identifiers including identifiers to be used for a peer to peer connection between said first and second peer communications devices.

27. The first peer communications device of claim 26, wherein the connection identifier monitoring detects signals received during the connection identifier broadcast interval and determines unused connection identifiers, said set of available connection identifiers including connection identifiers indicated by signals received during said connection identifier broadcast interval to be unused connection identifiers.

28. The first peer communications device of claim 27, further comprising:

peer communications control means for using a connection identifier included in said received subset to communicate with said second peer communications device over a connection.

29. The first peer communications device of claim 28, wherein said connection is a bi-directional connection.

30. The first peer communications device of claim 26, further comprising:

connection availability response signal recovery means for identifying said subset of connection identifiers from the received information.

31. The first peer communications device of claim 26, wherein said connection identifier broadcast interval is an interval during which peer communications devices having existing active connections broadcast connection identifier information indicating connection identifiers the peer communications devices are using.

32. A computer program product, comprising:

non-transitory computer-readable medium comprising;

code for causing at least one computer in a first peer communications device to monitor a connection identifier broadcast interval to identify unused connection identifiers of a set of connection identifiers associated with one or more symbols and tones for peer to peer connections, each connection identifier in the set of connection identifiers for identifying a peer to peer connection between two peer communications devices;

code for causing the at least one computer in said first peer communications device to transmit a set of available and unused connection identifiers from the identified unused connection identifiers for peer to peer connections to a second peer communications device; and

code for causing the at least one computer in said first peer communications device to receive from the second peer communications device a subset of said transmitted set of available and unused connection identifiers for peer to peer connections, said subset of connection identifiers including identifiers to be used for a peer to peer connection between said first and second peer communications devices.

33. The computer program product of claim 32, wherein the non-transitory computer-readable medium further comprises:

code for causing the at least one computer in said first peer communications device to use a connection identifier included in said received subset to communicate with said second peer communications device.

34. The computer program product of claim 32, wherein said connection is a bi-directional connection.

35. The computer program product of claim 32, wherein said received subset includes multiple connection identifiers corresponding to a single communications link between said first and second peer communications devices.

36. The computer program product of claim 35, wherein different traffic transmission resources are associated with different connection identifiers, the different traffic transmission resources having different priorities.

37. The computer program product of claim 32, wherein said connection identifier broadcast interval is an interval during which peer communications devices having existing active connections broadcast connection identifier information indicating connection identifiers the peer communications devices are using.

38. An apparatus for use in a first peer communications device comprising:

a processor configured to;

monitor a connection identifier broadcast interval to identify unused connection identifiers of a set of connection identifiers associated with one or more symbols and tones for peer to peer connections, each connection identifier in the set of connection identifiers for identifying a peer to peer connection between two peer communications devices;

transmit a set of available and unused connection identifiers from the identified unused connection identifiers for peer to peer connections to a second peer communications device; and

receive from the second peer communications device a subset of said transmitted set of available and unused connection identifiers for peer to peer connections, said subset of connection identifiers including identifiers to be used for a peer to peer connection between said first and second peer communications devices.

39. The apparatus of claim 38, wherein the processor is further configured to:

use a connection identifier included in said received subset to communicate with said second peer communications device.

40. The apparatus of claim 38, wherein said connection is a bi-directional connection.

41. The apparatus of claim 38, wherein said received subset includes multiple connection identifiers corresponding to a single communications link between said first and second peer communications devices.

42. The apparatus of claim 41, wherein different traffic transmission resources are associated with different connection identifiers, the different traffic transmission resources having different priorities.

43. The apparatus of claim 38, wherein said connection identifier broadcast interval is an interval during which peer communications devices having existing active connections broadcast connection identifier information indicating connection identifiers the peer communications devices are using.