Granted Patent B2

US 8,009,658 · App. 12/458,051 · Granted Aug 30, 2011

Assignee: Freescale Semiconductor, Inc.

Abstract

Claims (31)

1. A method for transmitting signals in a wireless network, comprising:

dividing a transmission time into M time slots; and

repeating for each of the M time slots as a selected time slot,

dividing the selected time slot into N allocation intervals, each of the N allocation intervals having an assigned interval duration, each of the interval durations representing an assigned fraction of the selected time slot;

determining an assigned power level for each of the N allocation intervals, respectively;

assigning N different device pairs in the wireless network to the N allocation intervals, respectively; and

transmitting information between the N different device pairs in respective ones of the N allocation intervals,

wherein for each of the N allocation intervals, the respective assigned power level is determined such that the respective assigned power level multiplied by the assigned fraction of the time slot is less than or equal to a threshold power,

wherein M is an integer greater than 1, and

wherein N is an integer greater than 1.

2. The method of claim 1 , wherein each of the M time slots includes a preamble addressed to all of the devices in the wireless network.

3. The method of claim 1 , wherein each of the N allocation intervals includes an information payload and a header unique to the assigned device pair.

4. The method of claim 1 , wherein each of the M time slots has a duration that corresponds to a power measurement duration of a wireless protocol associated with the wireless network.

5. The method of claim 1 , wherein each of the M time slots has a duration of approximately 1 millisecond.

6. The method of claim 1 , wherein the threshold power is a root-mean-square average of approximately −41.3 dBm/MHz.

7. A method for transmitting signals in a wireless network, comprising:

dividing a transmission time into M time slots; and

repeating for each of the M time slots as a selected time slot,

dividing the selected time slot into N allocation intervals, each of the N allocation intervals having an assigned interval duration, each of the interval durations representing an

assigned fraction of the selected time slot;

determining an assigned power threshold for each of the N allocation intervals, respectively;

assigning N different device pairs in the wireless network to the N allocation intervals, respectively; and

transmitting information between the N different device pairs in respective ones of the N allocation intervals at power levels no greater than a respective assigned power threshold,

wherein for each of the N allocation intervals, a respective assigned power threshold is equal to a maximum power threshold multiplied by the assigned fraction of the time slot of the respective one of the N allocation intervals,

wherein M is an integer greater than 1, and

wherein N is an integer greater than 1.

8. The method of claim 7 , wherein each of the M time slots includes a preamble addressed to all of the devices in the wireless network.

9. The method of claim 7 , wherein each of the N allocation intervals includes an information payload and a header unique to the assigned device pair.

10. The method of claim 7 , wherein each of the M time slots has a duration that corresponds to a power measurement duration of a wireless protocol associated with the wireless network.

11. The method of claim 7 , wherein each of the M time slots has a duration of approximately 1 millisecond.

12. The method of claim 7 , wherein the threshold power is a root-mean-square average of approximately −41.3 dBm/MHz.

Assignments (28)

Continuity (3)