Patent ID: 9698927
Date: 2017-07-04
CPC Classifications: H04J,H04L,H04W

Claim:
1. A method for wireless communications by a user equipment (UE) capable of communicating in frequency division duplexing (FDD) and time division duplexing (TDD) modes, comprising: obtaining FDD-specific capabilities and TDD-specific capabilities, wherein the FDD-specific capabilities comprise a set of capabilities supported in FDD that are not supported in TDD, and wherein the TDD-specific capabilities comprise a set of capabilities supported in TDD that are not supported in FDD; and sending a request to a base station to perform detach and re-attach procedures when changing from a first mode of operation to a second mode of operation, wherein the FDD-specific capabilities or the TDD-specific capabilities, corresponding to the second mode of operation, are transmitted to the base station during the re-attach procedure.