Patent ID: 7890113
Filing Date: 2011-02-15
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A method for Time Division Duplex (TDD) operation in a communication system that is capable of TDD and Frequency Division Duplex (FDD) communication, wherein the system comprises at least a network communicating with a User Equipment (UE), the method comprising: transmitting, by the UE to the network, an auxiliary downlink capability message, wherein the auxiliary downlink capability message indicates a capability of the UE to operate in at least one of: an auxiliary downlink lower FDD frequency band, and an auxiliary downlink upper FDD frequency band; receiving at the UE from the network, in response to the auxiliary downlink capability message, an allocation of downlink capacity of a frequency band allocated for FDD operation to receive downlink TDD communication; and operating in TDD mode, wherein operating in TDD mode comprises: operating in both a TDD uplink and a TDD downlink mode in a first frequency band allocated for FDD uplink communication, and operating in TDD downlink only mode in a second frequency band allocated for FDD downlink communication.