Patent ID: 7426386
Filing Date: 2008-09-16
Classification: H04B

Abstract:
1. A variable beam hop cycle beam laydown comprising: first cells supported by a first beam hop cycle; second cells supported by a second beam hop cycle different from the first beam hop cycle; and transition cells supported by a transition beam hop cycle for transitioning between the first beam hop cycle and the second beam hop cycle; wherein each beam hop cycle defines how the downlink energy of one beam is time-shared between at least two cells and wherein each of the hop cycles defines a schedule for transmitting beam energy to at least two cells in a sequential and non-simultaneous manner; wherein the first cells comprise a first beam-hopped pair of cells, the second cells comprise a second beam-hopped pair of cells, and the transition cells comprise a third beam-hopped pair of cells; wherein the first beam hop cycle is a 50-50 beam hop cycle wherein beam energy is directed to two cells sequentially on a 50-50 duty cycle basis; and wherein the second beam hop cycle is a 75-25 beam hop cycle in which beam energy is directed to two cells sequentially on a 75-25 duty cycle basis, and wherein the transition beam hop cycle is a 50-25 beam hop cycle in which beam energy is directed to two cells sequentially on a 50-25 duty cycle basis and is powered off for a remaining 25% of the duty cycle.