Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A power control subsystem in a satellite based telecommunications system for distributing satellite transmission power among a plurality of communications channels between at least one earth station and at least one user terminal through a satellite, said subsystem comprising: An operating center for assigning a total satellite available power for use by a satellite with at lest one communications channel, said channel being in a predetermined subband in a predetermined beam emitted by the satellite; and an earth station for controlling distribution of said total available power among communications channels in subbands of beams emitted by the satellite, said earth station including a baseband manager for dividing said total available power between subbands to provide subband power allocations, said earth station including a beam processor for determining a desired signal quality to be maintained by the satellite along said communications channels, said beam processor adjusting said desired signal quality based on said subband power allocations.
Claim 2
Dependent Claim
58 words
A subsystem according to claim 1, wherein said earth station further includes a plurality of modems assigned to a corresponding number of communications channels, said modems adjusting a satellite transmission power level, at which the satellite emits RF signals along of forward links of said communications channels, to maintain said desired signal quality determined by said beam processor.
Claim 3
Dependent Claim
34 words
A subsystem according to claim 1, wherein said baseband manager determines subband power allocations for each beam based on total satellite power allocation, PFD limits and required power levels reported from said beam processor.
Claim 4
Dependent Claim
25 words
A subsystem according to claim 1, wherein said beam processor determines fade margins for each user terminal within a beam based on subband power allocations.
Claim 5
Dependent Claim
30 words
A subsystem according to claim 1, wherein said beam processor determines fade margins based on user terminal type and user terminal position within a field of view of a satellite.
Claim 6
Dependent Claim
32 words
A subsystem according to claim 1, wherein said beam processor determines fade margins based on signal-to-noise ratio information reported to said beam processor from a modem corresponding to a current user terminal.
Claim 7
Dependent Claim
40 words
A subsystem according to claim 1, wherein said baseband manager reallocates power between first and second subbands to shift power to said first subband which requires additional power and to shift power from said second subband which includes excess power.
Claim 8
Dependent Claim
40 words
A subsystem according to claim 1, wherein said beam processor decreases a desired signal-to-noise ratio for a corresponding subband when a corresponding modem indicates that sufficient power has not been allocated to said subband to achieve said desired signal-to-nose ratio.
Claim 9
Dependent Claim
22 words
A subsystem according to claim 1, wherein said beam processor reports a subband power demand for each subband to the baseband manager.
Claim 10
Dependent Claim
28 words
A subsystem according to claim 1, wherein said operations center divides a total power capacity of a common satellite between earth stations using beams of the common satellite.
Claim 11
Dependent Claim
21 words
A subsystem according to claim 1, wherein said operations center provides to said earth station power limits per subband per beam.
Claim 12
Dependent Claim
38 words
A subsystem according to claim 1, wherein said operations center reallocates a total power capacity of a common satellite between earth stations using beams of the common satellite based on feedback power requirement information from said earth stations.