Methods and apparatus for TDD reconfiguration

摘要

Transmission of control data by a user equipment (UE) in circumstances following a TDD subframe reconfiguration from an evolved node B (eNB) may result in a conflict with a scheduled transmission of the control data. In one example, a UE may modify periodicity, content, priority, or other aspects of channel state information (CSI) or sounding reference signals (SRS) to resolve any conflicts resulting from a TDD subframe reconfiguration and to ensure transmission of the CSI or SRS. In another example, a UE may detect a hybrid automatic repeat request (HARQ) conflict resulting from a TDD subframe reconfiguration. In such example, the UE may determine and apply a HARQ soft buffer size for a HARQ process or determine and apply a codebook size for a HARQ process in carrier aggregation to resolve such HARQ conflict.

主权项

1. A method performed by a user equipment (UE) for configuring control data communications based on a time division duplexing (TDD) subframe reconfiguration, comprising:
detecting a TDD subframe reconfiguration from a first TDD subframe configuration to a second TDD subframe configuration; detecting a scheduling conflict with a scheduled channel state information (CSI) transmission or a sounding reference signal (SRS) transmission based on the TDD subframe reconfiguration; and modifying at least one aspect of the CSI transmission or the SRS transmission based on the TDD subframe reconfiguration, comprising
modifying a periodicity of the CSI or the SRS transmission of the second TDD subframe configuration, wherein the modifying the periodicity comprises dropping at least one instance of the CSI or SRS transmission based on the detected scheduling conflict with the TDD subframe reconfiguration.