Method of timing reference management

摘要

A method of timing reference management for a mobile device in a wireless communication system comprising a network is disclosed. The method comprises being configured a first cell of a timing advance group, as a timing reference cell of the timing advance group; and when the timing reference cell is changed from the first cell to a second cell of the timing advance group and a timing alignment timer applied for the timing advance group for uplink transmission synchronization is running, deriving a new uplink transmission timing according to a second timing adjust value; wherein the second timing adjust value is calculated according to a first downlink timing of the first cell, a second downlink timing of the second cell, and a first timing adjust value for deriving the uplink transmission timing when the timing reference cell is the first cell.

主权项

1. A method of timing reference management for a mobile device in a wireless communication system comprising a network, the method comprising:
being configured a first cell of a timing advance group, in which cells have the same uplink timing, as a timing reference cell of the timing advance group, wherein the downlink timing of the timing reference cell is used for deriving the uplink transmission timing; and when the timing reference cell is changed from the first cell to a second cell of the timing advance group and a timing alignment timer applied for the timing advance group for uplink transmission synchronization is running, deriving a new uplink transmission timing according to a second timing adjust value; wherein the second timing adjust value is calculated according to a first downlink timing of the first cell, a second downlink timing of the second cell, and a first timing adjust value for deriving the uplink transmission timing when the timing reference cell is the first cell.