US 7,499,442 B2
Method for sharing bandwidth using reduced duty cycle signals
Matthew L. Welborn, Vienna, Va. (US); and William M. Shvodian, McLean, Va. (US)
Assigned to Freescale semiconductor, Inc., Austin, Tex. (US)
Filed on Nov. 30, 2004, as Appl. No. 10/998,572.
Prior Publication US 2006/0114879 A1, Jun. 01, 2006
Int. Cl. H04B 7/212 (2006.01)
U.S. Cl. 370—347 25 Claims
OG exemplary drawing
 
1. A method of coordinating the transmission of data, comprising:
dividing an available transmission channel into a plurality of nominal time slots;
assigning a first device to generate a first reduced duty cycle signal comprising a first gated-on portion and a first gated-off portion in a first nominal time slot selected from the plurality of nominal time slots, such that the first gated-on portion is generated during a first segment of the first nominal time slot and that the first gated-off portion is generated during a second segment of the first nominal time slot; and
assigning a second device to generate a second reduced duty cycle signal comprising a second gated-on portion and a second gated-off portion in the first nominal time slot such that the second gated-on portion is generated during the second segment of the first nominal time slot and that the second gated-off portion is generated during a first segment of the first nominal time slot,
wherein the first reduced duty cycle signal has a first duty cycle below 100%,
wherein the second reduced duty cycle signal has a second duty cycle below 100%,
wherein the sum of the first and second duty cycles is less than or equal to 100%,
wherein a first total transmit power for the first reduced duty cycle signal divided by a length of the first nominal time slot is below a regulatory power threshold,
wherein a second total transmit power for the second reduced duty cycle signal divided by the length of the first nominal time slot is below the regulatory power threshold, and
wherein at least a one of the first total transmit power divided by a length of the first segment of the first nominal time slot, or the second total transmit power divided by a length of the second segment of the first nominal time slot is greater than the regulatory power threshold.