Techniques to control data transmission for a wireless system

• US 7,573,820 B2
• Filed: 06/29/2005
• Issued: 08/11/2009
• Est. Priority Date: 06/29/2005
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Jutzi, Curtis, Matter, Eugene P., Krishnaswamy, Dilip
• Primary Examiner(s): Phan; Huy Q
• Application Number:
  US11/171,589
• Publication Number:
  US 20070002742A1
• Time in Patent Office: 1,504 Days
• Field of Search: 370/349, 370/231, 370/235, 370/253, 370/252, 370/310, 370/332, 370/395.1, 370/395.52, 370/360, 370/318, 370/229, 370/230, 370/395.2, 455/512, 455/513, 455/509
• US Class Current: 370/235
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 72/569 of the traffic information

Abstract

A system, apparatus, method, and article including a control module to manage transmission of packets in a channel of a wireless network. The control module to receive real-time information about the channel. The control module to adapt transmission of said packets based on the information. Other embodiments are described and claimed.

Claims

1. An apparatus comprising:

a control module to manage transmission of packets in a channel of a wireless network, said control module to receive real-time information about said channel, said control module to adapt transmission of said packets based on said information;

wherein said control module provides an early warning signal to trigger a channel failure and to control channel switching, and wherein each of said packets is represented by a packet quintuplet, wherein said quintuplet comprises a packet number, a packet length, a timeout period, a packet priority, and a transport protocol associated with said packet, said transport protocol used by said control module to differentiate between reliable and unreliable transport mechanisms and to establish a number of retry transmissions for said packets based on said transport mechanism reliability.

2. The apparatus of claim 1, wherein said channel information comprises at least one of a link quality signal to interference and noise ratio (SINR) and expected packet error rate (PER) for each modulation and coding scheme.

3. The apparatus of claim 2, wherein said packets are assigned a priority and said priority is mapped to an available modulation and coding scheme.

4. The apparatus of claim 2, wherein said packets are assigned a priority and said priority is mapped to values of packet retransmission limits, wherein higher priority packets are retried based on available scheduled deadline and wherein lower priority packets are either retried less often or are discarded.

5. The apparatus of claim 2, wherein said packets assigned a modulation and coding scheme mapped to a packet error rate associated with said modulation and coding scheme.

6. The apparatus of claim 1, wherein said control module provides a packet abort signal.

7. A system, comprising:

an antenna; and

a control module to couple to said antenna, said control module to manage transmission of packets in a channel of a wireless network, said control module to receive real-time information about said channel, said control module to adapt transmission of said packets based on said information, wherein said control module provides an early warning signal to trigger a channel failure and to control channel switching;

wherein each of said packets is represented by a packet quintuplet, wherein said quintuplet comprises a packet number, a packet length, a timeout period, a packet priority, and a transport protocol associated with said packet, said transport protocol used by said control module to differentiate between reliable and unreliable transport mechanisms and to establish a number of retry transmissions for said packets based on said transport mechanism reliability.

8. The system of claim 7, wherein said channel information comprises at least one of a link quality signal to interference and noise ratio (SINR) and expected packet error rate (PER) for each modulation and coding scheme.

9. The system of claim 8, wherein said packets are assigned a priority and said priority is mapped to an available modulation and coding scheme.

10. The system of claim 8, wherein said packets are assigned a priority and said priority is mapped to values of packet retransmission limits.

11. The system of claim 8, wherein said packets assigned a modulation and coding scheme mapped to a packet error rate associated with said modulation and coding scheme.

12. The system of claim 7, wherein said control module provides a packet abort signal.

13. A method, comprising:

monitoring, at a control module, channel conditions;

receiving, at the control module, information associated with said channel;

receiving, at the control module, a list of pending packets available for transmission, wherein receiving the list of pending packets available for transmission comprises receiving a packet number, packet length, packet timeout, packet priority, and transport protocol for each of the said pending packets;

differentiating, by the control module, between reliable and unreliable transport mechanisms;

establishing, by the control module, a number of retry transmissions for said packets based on said transport mechanism reliability

generating, by the control module, an output signal based on said channel information and said list of pending packets; and

providing, by the control module, an early warning signal to at least one protocol layer to indicate channel failure and to switch transmission to a different channel.

14. The method of claim 13, wherein receiving said channel information comprises receiving statistics related to link quality from at least one of a physical protocol layer and a data link protocol layer.

15. The method of claim 14, wherein receiving said channel information comprises receiving current signal to interference and noise ratio, and a mapping of physical layer packet error rates for each available modulation and coding schemes.

16. The method of claim 13, comprising jointly adapting for packet retransmissions and modulation and coding schemes based on said received information associated with said channel and said received list of pending packets available for transmission.

17. The method of claim 13, comprising providing a packet transmission abort signal to at least one protocol layer when a packet transmission is aborted.

18. An article comprising a machine-readable storage medium containing instructions that if executed enable a system to monitor channel conditions;

receive information associated with said channel;

receive a list of pending packets available for transmission, wherein receiving the list of pending packets available for transmission comprises receiving a packet number, packet length, packet timeout, packet priority, and transport protocol for each of the said pending packets;

differentiate between reliable and unreliable transport mechanisms;

establish a number of retry transmissions for said packets based on said transport mechanism reliability;

generate an output signal based on said channel information and said list of pending packets, and provide an early warning signal to at least one protocol layer to indicate channel failure and to switch transmission to a different channel.

19. The article of claim 18, comprising instructions that if executed enable the system to jointly adapt for packet retransmissions and modulation and coding schemes based on said received information associated with said channel and said received list of pending packets available for transmission.

20. The article of claim 18, comprising instructions that if executed enable the system to provide a packet transmission abort signal to at least one protocol layer when a packet transmission is aborted.