Multimode support for wireless communications

• US 20070147332A1
• Filed: 12/28/2005
• Published: 06/28/2007
• Est. Priority Date: 12/28/2005
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Reunamaki, Jukka, Palin, Arto, Lappetelainen, Antti, Laine, Hannu
• Application Number:
  US11/319,163
• Publication Number:
  US 20070147332A1
• Time in Patent Office: Days
• US Class Current: 370/346
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 74/06 using polling
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A plurality of polling response transmission times are allocated for a corresponding plurality of remote devices. The remote devices operate according to a first wireless transmission mode, such as Bluetooth LEE. These allocated polling response transmission times are outside of a time interval designated for communications according to a second wireless transmission mode, such as Bluetooth. Each of the polling response transmission times may be offset from a polling packet transmission time by a corresponding delay interval. In addition, a polling packet to the plurality of remote devices is transmitted, and one or more responses to the polling packet are received. Each of these responses is sent by one of the remote devices during its corresponding polling response transmission time. In addition, communications according to the second wireless transmission mode may be conducted during the designated time interval.

Claims

1. A method, comprising:

(a) allocating a plurality of polling response transmission times for a corresponding plurality of remote devices, the remote devices operating according to a first wireless transmission mode, wherein the plurality of polling response transmission times are outside of a time interval designated for communications according to a second wireless transmission mode;

(b) transmitting a polling packet to the plurality of remote devices;

(c) receiving one or more responses to the polling packet, wherein each of the responses is sent by one of the remote devices during its corresponding polling response transmission time; and

(d) communicating according to the second wireless transmission mode during the time interval designated in step (a).

2. The method of claim 1, wherein each of the polling response transmission times is offset from a polling packet transmission time by a corresponding delay interval.

3. The method of claim 1, wherein step (a) comprises, for each remote device:

sending a request to the remote device to move from an active mode to a low-activity mode, the request including the polling response transmission time corresponding to the remote device.

4. The method of claim 3, wherein the low-activity mode is a Bluetooth low end radio sniff mode.

5. The method of claim 1, wherein step (b) comprises including an indication in the polling packet, the indication identifying whether transmissions from each of the remote devices have been previously received.

6. The method of claim 5, wherein the indication comprises a plurality of bits, each of the bits corresponding to a respective one of the plurality of remote devices.

7. The method of claim 6, further comprising:

sending to each of the plurality of remote devices a corresponding bit position in the plurality of bits.

8. The method of claim 7, wherein said sending step comprises sending a Bluetooth low end radio SNIFF_REQ packet.

9. The method of claim 1, wherein the first wireless transmission mode is Bluetooth low end radio and the second wireless transmission mode is Bluetooth.

10. The method of claim 1, wherein step (a) comprises, for each of the plurality of remote devices:

generating a potential response transmission time for the remote device;

determining whether the potential response transmission time is outside of a time interval designated for communications according to the second wireless transmission mode; and

when the potential response transmission time is outside of the time interval, setting the potential response transmission time as the polling response transmission time for the remote device.

22. The method of claim 1, wherein step (b) includes receiving an indication in the polling packet, the indication identifying whether transmissions from each of the plurality of devices have been previously received.

23. The method of claim 2, wherein the indication comprises a plurality of bits, each of the plurality of bits corresponding to a respective one of the plurality of devices.

11. A method, comprising:

(a) designating a device from a plurality of remote wireless communications devices, the plurality of remote wireless communications devices communicating according to a first wireless transmission mode;

(b) setting a delay parameter for the designated device, the delay parameter measured from a polling message transmission time and establishing when the designated device is authorized to respond to the polling message, said setting step comprising;

(i) generating a potential response transmission time for the designated device;

(ii) determining whether the potential response transmission time is outside of a time interval designated for communications according to the second wireless transmission mode; and

(iii) when the potential response transmission time is outside of the time interval, setting the potential response transmission time as the polling response transmission time.

(c) transmitting the delay parameter to the designated device.

12. The method of claim 11, wherein step (c) comprises transmitting the delay parameter in a message requesting the designated remote device to enter a low activity mode.

13. The method of claim 11, wherein the first wireless transmission mode is Bluetooth low end radio and the second wireless transmission mode is Bluetooth.

14. An apparatus, comprising:

means for allocating a plurality of polling response transmission times for a corresponding plurality of remote devices, the remote devices operating according to a first wireless transmission mode, wherein the plurality of polling response transmission times are outside of a time interval designated for communications according to a second wireless transmission mode;

means for transmitting a polling packet to the plurality of remote devices;

means for receiving one or more responses to the polling packet, wherein each of the responses is sent by one of the remote devices during its corresponding polling response transmission time; and

means for communicating according to the second wireless transmission mode during the designated time interval.

15. The apparatus of claim 14, wherein each of the polling response transmission times is offset from a polling packet transmission time by a corresponding delay interval.

16. The apparatus of claim 14, wherein said means for allocating a plurality of polling response transmission times comprises, for each remote device:

means for sending a request to the remote device to move from an active mode to a low-activity mode, the request including the polling response transmission time corresponding to the remote device.

17. The apparatus of claim 16, wherein the low-activity mode is a Bluetooth low end radio sniff mode.

18. The apparatus of claim 14, wherein said means for transmitting a polling packet comprises means for including an indication in the polling packet, the indication identifying whether transmissions from each of the remote devices have been previously received.

19. The apparatus of claim 14, wherein the first wireless transmission mode is Bluetooth low end radio and the second wireless transmission mode is Bluetooth.

20. A computer program product comprising a computer useable medium having computer program logic recorded thereon for enabling a processor to control a wireless communications device, the computer program logic comprising:

program code for allocating a plurality of polling response transmission times for a corresponding plurality of remote devices, the remote devices operating according to a first wireless transmission mode, wherein the plurality of polling response transmission times are outside of a time interval designated for communications according to a second wireless transmission mode;

program code for causing the wireless communications device to transmit a polling packet to the plurality of remote devices;

program code for causing the wireless communications device to receiving one or more responses to the polling packet, wherein each of the responses is sent by one of the remote devices during its corresponding polling response transmission time; and

program code for causing the wireless communications device to communicate according to the second wireless transmission mode during the designated time interval.

21. A method, comprising:

(a) receiving an allocation of a polling response transmission time from a polling device;

(b) receiving a polling packet from the from the polling device, wherein the polling packet is directed to a plurality of devices; and

(c) transmitting a response to the polling packet during the allocated polling response time.

24. An apparatus, comprising:

means for receiving an allocation of a polling response transmission time from a polling device;

means for receiving a polling packet from the from the polling device, wherein the polling packet is directed to a plurality of devices; and

means for transmitting a response to the polling packet during the allocated polling response time.