Resource Allocation In Different TDD Configurations With Cross Carrier Scheduling

摘要

A downlink resource grant is on a first component carrier having a first downlink to uplink DL/UL subframe configuration, and cross schedules to a second component carrier having a different second DL/UL subframe configuration. If a first set SI of downlink subframes associated with a subframe n of the first DL/UL subframe configuration only partially overlaps with a second set S2 of downlink subframes associated with the subframe n of the second DL/UL subframe configuration, then explicit signaling is utilized to select whether uplink radio resources in subframe n for channel selection are implicitly or explicitly allocated. If instead SI does not only partially overlap SI, then a default rule is utilized for allocating the uplink radio resources in subframe n for channel selection. In different examples the explicit signaling is higher layer signaling which configures a UE; or a predetermined state in a field of the PDCCH.

主权项

1. A method for selecting uplink radio resources, comprising:
for a downlink resource grant on a first component carrier having a first downlink to uplink subframe configuration that cross schedules to a second component carrier having a different second downlink to uplink subframe configuration, determining whether a first set of downlink subframes associated with a particular subframe of the first downlink to uplink subframe configuration only partially overlaps with a second set of downlink subframes associated with the particular subframe of the second downlink to uplink subframe configuration; and if the determination is that the first set only partially overlaps the second set, then utilizing explicit signaling to select whether uplink radio resources in subframe n for channel selection are implicitly or explicitly allocated; else if the determination is that the first set does not only partially overlap the second set, utilizing a default rule for allocating the uplink radio resources in subframe n for channel selection.