TECHNIQUES FOR TRANSMISSION PROTECTION FOR WIRELESS NETWORKS

• US 20080170558A1
• Filed: 01/10/2008
• Published: 07/17/2008
• Est. Priority Date: 01/15/2007
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Jaakkola, Mikko, Jokela, Jari
• Application Number:
  US11/972,302
• Publication Number:
  US 20080170558A1
• Time in Patent Office: Days
• US Class Current: 370/348
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 74/085 collision avoidance
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Various embodiments are disclosed relating to techniques for protecting transmissions in a wireless network. According to an example embodiment, it may be determined at a wireless node whether the wireless node is exchanging transmissions with a plurality of wireless devices associated with a plurality of different signal types in a wireless network. An extended protection request may be sent from the wireless node to a first transmitting device to defer transmission of information for the wireless node for a requested deferral duration. The first transmitting device may defer transmission of information for the wireless node during a deferral period corresponding to the requested deferral duration in response to the extended protection request.

Claims

1. A method comprising:

determining at a wireless node whether the wireless node is exchanging transmissions with a plurality of wireless devices associated with a plurality of different signal types in a wireless network; and

sending from the wireless node an extended protection request to a first transmitting device to defer transmission of information for the wireless node for a requested deferral duration, wherein

the first transmitting device defers transmission of information for the wireless node during a deferral period corresponding to the requested deferral duration in response to the extended protection request.

2. The method of claim 1, wherein the determining comprises determining at the wireless node whether the wireless node is receiving at least one degraded transmission from one of the wireless devices in the wireless network.

3. The method of claim 1, wherein the determining comprises determining at a wireless station whether the wireless station is exchanging transmissions with the plurality of wireless devices in the wireless network.

4. The method of claim 1, wherein the sending comprises sending from the wireless node the extended protection request to a wireless access point to defer transmission of information for the wireless node for the requested deferral duration.

5. The method of claim 1, wherein the sending comprises sending from the wireless node a data message including an indication of a requested length of time for the first transmitting device to defer transmission of information for the wireless node.

6. The method of claim 1, wherein the sending comprises sending from the wireless node an extended protection request message including an indication of a requested length of time for the first transmitting device to defer transmission of information for the wireless node, wherein the extended protection request message includes one of a control frame or a management frame.

7. The method of claim 1, further comprising:

receiving an acknowledgment message from the first transmitting device indicating receipt of the extended protection request,

wherein the first transmitting device defers transmission of information for the wireless node during a deferral period corresponding to the requested deferral duration immediately following transmission of the acknowledgment message from the first transmitting device.

8. The method of claim 1, further comprising:

receiving at the wireless node capability information included in a capability information element transmitted from the first transmitting device indicating that the first transmitting device is configured to defer transmission of information for receiving wireless nodes in response to extended protection requests from the receiving wireless nodes to defer transmission of information for the receiving wireless nodes.

9. A method comprising:

receiving from a wireless node at a transmitting device an extended protection request to defer transmission of information for the wireless node in a wireless network for a requested deferral duration; and

deferring transmission of information for the wireless node during a deferral period corresponding to the requested deferral duration at the transmitting device in response to the extended protection request, wherein

the wireless node is exchanging transmissions with a plurality of wireless devices associated with a plurality of different signal types.

10. The method of claim 9, wherein the receiving comprises receiving from the wireless node a data frame including an indication of a requested length of time for the transmitting device to defer transmission of information for the wireless node.

11. The method of claim 9, wherein the receiving comprises receiving from the wireless node an extended protection request message including an indication of a requested length of time for the transmitting device to defer transmission of information for the wireless node.

12. The method of claim 9, wherein the receiving comprises receiving from the wireless node an extended protection request message including an indication of a requested length of time for the transmitting device to defer transmission of information for the wireless node, an identification of the wireless-node, and an identification of the transmitting device, wherein the extended protection request message includes one of a control frame or a management frame.

13. The method of claim 9, further comprising:

sending an acknowledgment message from the transmitting device indicating receipt of the extended protection request,

wherein deferring transmission of information for the wireless node comprises deferring transmission of information for the wireless node from the transmitting device during a deferral period corresponding to the requested deferral duration at the transmitting device immediately following the sending of the acknowledgment message.

14. The method of claim 9, further comprising:

transmitting to the wireless node capability information indicating that the transmitting device is configured to defer transmission of information for receiving wireless nodes in response to requests from the receiving wireless nodes to defer transmission of information for the receiving wireless nodes.

15. The method of claim 9, further comprising:

transmitting information from the transmitting device for one or more other wireless nodes during the deferral period at the transmitting device.

18. The apparatus of claim 9, further configured to:

perform at least one of receiving information transmitted from a second transmitting device or transmitting information from the wireless node to the second transmitting device during a deferral period corresponding to the requested deferral duration at the first transmitting device.

16. An apparatus provided in a wireless node, the apparatus configured to:

determine whether the wireless node is exchanging transmissions with a plurality of wireless devices associated with a plurality of different signal types, and

send an extended protection request to a first transmitting device to defer transmission of information for the wireless node for a requested deferral duration, wherein

the first transmitting device defers transmission of information for the wireless node during a deferral period corresponding to the requested deferral duration at the first transmitting device in response to the extended protection request.

17. The apparatus of claim 16, wherein the apparatus comprises:

a controller;

memory coupled to the controller; and

a wireless transceiver coupled to the controller.

19. An apparatus provided in a first wireless node, the apparatus configured to:

receive from a second wireless node an extended protection request to defer transmission of information for the second wireless node in a wireless network for a requested deferral duration; and

defer transmission of information for the second wireless node during a deferral period corresponding to the requested deferral duration at the first wireless node in response to the extended protection request, wherein

the second wireless node exchanges transmissions with a plurality of wireless devices associated with a plurality of different signal types.

20. The apparatus of claim 19, wherein the apparatus comprises:

a controller;

memory coupled to the controller; and

a wireless transceiver coupled to the controller.

21. The apparatus of claim 19, further configured to:

transmit information from the first wireless node for a third wireless node during the deferral period at the first wireless node.

22. A method comprising:

receiving from a wireless node at a transmitting device an extended protection request to defer transmission to the wireless node in a wireless network for a requested deferral duration; and

transmitting no information to the wireless node during a deferral period corresponding to the deferral duration at the transmitting device, in response to the extended protection request.

23. The method of claim 22, wherein the receiving comprises receiving from a wireless station at a wireless access point the extended protection request to defer transmission to the wireless station for the requested deferral duration.

24. The method of claim 22, wherein the receiving comprises receiving from the wireless node a data frame including an indication of a requested length of time for the transmitting device to defer transmission to the wireless node.

25. The method of claim 22, wherein the receiving comprises receiving from the wireless node an extended protection request message including an indication of a requested length of time for the transmitting device to defer transmission to the wireless node.