InterDigital Inc (IDCC)

[infinite_q]

New '406 patent in ITC action...

This is a new one. Haven't seen this in the suits before.

Patent 7,502,406 covers a very fundamental aspect of power control - using a series of power control bits from the base station to the UE, to increase or decrease the power transmitted by the UE. There are method claims and structural claims that apply to the UE. I'm not sure which independent claim they will assert, but this one is representative of the claimed invention:

15. A code division multiple access (CDMA) subscriber unit comprising: a despreading and demultiplexing device configured to recover a power control bit from a downlink control channel, wherein the power control bit having has a value indicating a command to either increase or decrease transmission power level; and gain devices configured, in response to the received power control bit, to adjust a transmission power level of both a traffic channel and a reverse control channel prior to transmission by the subscriber unit, wherein the transmission power level of the traffic channel and the reverse_control channel are different.