Opinion ID: 2779923
Heading Depth: 3
Heading Rank: 2

Heading: The Power Control Patents

Text: The Power Control Patents relate to how the sub- scriber unit and the base station adjust their transmission power level after a connection is established. See ’406 patent col. 5 ll. 46–66. In particular, the patents describe sending messages back and forth indicating whether the power level should be increased or decreased. Id. These messages are known as “adaptive,” id. col. 2 ll. 29–30, or “automatic power control” information (“APC information”), id. col. 5 ll. 48–50. For the ’406 patent, InterDigital asserts dependent claims 6, 13, 20, and 26 (which depend, respectively, from independent claims 1, 7, 15, and 21) and independent claim 29. For the ’332 patent, InterDigital asserts claims 2–4, 7–11, 14, 22–24 and 27. Claims 1 and 7 of the ’406 patent, which InterDigital asserts are representative for present purposes, provide: 1. A method for controlling transmission pow- er levels of a code division multiple access (CDMA) subscriber unit, the method comprising: receiving by the subscriber unit a power con- trol bit on a downlink control channel, the power control bit indicating either an in- crease or decrease in transmission power level; transmitting a plurality of channels by the subscriber unit, the plurality of channels including a traffic channel and a reverse control channel; in response to the received power control bit, adjusting a transmission power level of both the traffic channel and the reverse 6 INTERDIGITAL v. ITC control channel, wherein the transmission power level of the traffic channel and the reverse control channel are different; and transmitting the traffic channel and the re- verse control channel at their respective ad- justed transmit power levels. ’406 patent col. 14 l. 57–col. 15 l. 9 (emphases added). 7. A method for controlling transmission pow- er levels of a code division multiple access (CDMA) subscriber unit, the method comprising: receiving by the subscriber unit a series of power control bits on a downlink channel, each power control bit indicating either an increase or decrease in transmission power level; transmitting a plurality of channels by the subscriber unit, the plurality of channels including a traffic channel and a reverse control channel; adjusting a transmission power level of both the traffic channel and the reverse control channel in response to the same bits in the received series of power control bits, where- in the transmission power level of the traf- fic channel and the reverse control channel are different; and transmitting the traffic channel and the re- verse control channel at their respective ad- justed transmit power levels. Id. col. 15 ll. 28–45 (emphases added).