Handling of Cells Associated with Timing Advance Groups in a Wireless Communications System

摘要

Techniques and apparatus for handling timing alignment for a wireless device capable of aggregating carriers for uplink transmissions. In an example method, embodiments of which can be carried out in the wireless device or in a network node, a time difference between uplink transmission timings for a pair of timing advance groups (TAGs) for the wireless device is monitored, where each TAG comprises at least one serving cell. The method further includes determining whether the wireless device is able to support the time difference and, in response to determining that the wireless device is not able to support the time difference, excluding serving cells associated with one of the TAGS in the pair from uplink carrier aggregation.

主权项

1. A method of handling timing advance groups, TAGs, for a wireless device capable of aggregating carriers for uplink transmissions, the method comprising
monitoring a time difference between uplink transmission timings for a pair of TAGs for the wireless device, each TAG comprising at least one serving cell; determining whether the wireless device is able to support the time difference; and, in response to determining that the wireless device is not able to support the time difference, excluding serving cells associated with one of the TAGs in the pair from uplink carrier aggregation.