Claims
- 1. A user device, comprising:
a host processor; and a wireless communication interface module including a physical radio layer and wake up logic circuitry not implemented by the host processor, the user device being configurable to enter a power save mode wherein the host processor is deenergized and substantially only the physical radio layer and wake up logic circuitry remain energized in the user device, a wake up signal being generated upon detection by the wake up logic circuitry of a traffic signal from a wireless communication system node indicating that data for the device is available in the wireless communication system.
- 2. The user device of claim 1, wherein the wake up signal is used to generate a user alert on the user device.
- 3. The user device of claim 1, wherein the wake up signal is used to automatically disable the power save mode to cause the host processor to be energized.
- 4. The user device of claim 1, wherein the wake up logic circuitry is implemented in the physical radio layer.
- 5. The user device of claim 1, wherein the wake up logic circuitry is implemented in a medium access controller (MAC) on the module.
- 6. The user device of claim 1, wherein the wireless communication network is a 802.11 network and the traffic signal is at least a portion of a 802.11-defined traffic indication map (TIM).
- 7. The user device of claim 1, wherein the traffic signal includes a special sequence of N bytes repeated M times, wherein N and M are integers.
- 8. The user device of claim 1, wherein the wake up logic circuitry is embodied at least in part by a shift register and related logic circuitry.
- 9. A user device configured for wireless communication with an access point of a wireless network, comprising:
a host processor having a power save mode in which the host processor is deenergized; a physical radio layer configured for communicating with the wireless network and energized even when the host processor is in the power save mode; and wake up logic circuitry generating a wake up signal indicative of the availability of data for the user device in the network, the wake up signal being generated upon receipt of a code from the network, the code being unique to the user device.
- 10. The user device of claim 9, wherein the wake up signal is used to generate a user alert on the user device.
- 11. The user device of claim 9, wherein the wake up signal is used to automatically disable the power save mode to cause the host processor to be energized.
- 12. The user device of claim 9, wherein the wake up logic circuitry is implemented in the physical radio layer.
- 13. The user device of claim 9, wherein the wake up logic circuitry is implemented in a medium access controller (MAC) on a communication module selectively engageable with the host processor.
- 14. The user device of claim 9, wherein the wireless network is a 802.11 network and the code is at least a portion of a 802.11-defined traffic indication map (TIM).
- 15. The user device of claim 9, wherein the code includes a special sequence of N bytes repeated M times, wherein N and M are integers, followed by a user device identification.
- 16. The user device of claim 9, wherein the wake up logic circuitry is embodied by a shift register.
- 17. An access point in a wireless network, comprising:
means for receiving a signal from a user device that the user device is entering a power save mode, the access point transmitting a code useful in disabling the power save mode when data intended for the user device exists in the network.
- 18. The network access point of claim 17, wherein the wireless network is a 802.11 network and the code is at least a portion of a 802.11-defined traffic indication map (TIM).
- 19. The network access point of claim 17, wherein the code includes a special sequence of N bytes repeated M times, wherein N and M are integers, followed by a user device identification.
- 20. A user device comprising:
host processor means for processing data, the host processor means having an active mode, wherein the host processor means is energized, and a power save mode, wherein the host processor means is deenergized; physical radio means electrically connectable to the host processor means for communicating data from a wireless network thereto, the physical radio means remaining energized when the host processor means is in the power save mode; and logic means receiving information from the physical radio means for determining whether a wake up code has been received from a network node.
- 21. The user device of claim 20, wherein the host processor means is a host processor, the physical radio means is a physical layer of a wireless radio, and the logic means is a wake up logic circuit.
- 22. The user device of claim 21, wherein the wake up code causes the generation of a user alert on the user device.
- 24. The user device of claim 21, wherein the wake up code causes automatically disabling of the power save mode.
- 25. The user device of claim 21, wherein the wake up logic circuit is implemented in the physical layer.
- 26. The user device of claim 21, wherein the wake up logic circuit is implemented in a medium access controller (MAC) on a communication module selectively engageable with the host processor.
- 27. The user device of claim 21, wherein the wireless network is a 802.11 network and the code is at least a portion of a 802.11-defined traffic indication map (TIM).
- 28. The user device of claim 21, wherein the code includes a special sequence of N bytes repeated M times, wherein N and M are integers, followed by a user device identification.
- 29. The user device of claim 21, wherein the wake up logic circuit is embodied by a shift register.
RELATED APPLICATIONS
[0001] This application claims priority from U.S. provisional patent application Ser. No. 60/469,302, filed May 9, 2003.
Provisional Applications (1)
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Number |
Date |
Country |
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60469302 |
May 2003 |
US |