Patent ID: 9226250
Filing Date: 2015-12-29
Classification: H04L,H04W

Abstract:
1. A method in a network access equipment of maintaining uplink synchronization with a user equipment, the method comprising: defining, by the network access equipment, a burst period for sending a plurality of timing signals, the burst period being defined within a timing advance (TA) adjustment period, the TA adjustment period including a quiet period during which the timing signals are not sent, wherein the quiet period includes a plurality of sub-frames; sending, by the network access equipment, a first timing signal instruction message to the user equipment, wherein the first timing signal instruction message comprises a timing signal parameter, wherein the timing signal parameter is one or more of the burst period, a number of timing signals required per burst period to maintain synchronization, or an interval between ones of the timing signals in the burst period; and receiving timing signals from the user equipment in accordance with the timing signal parameter; and processing the timing signals in order to maintain synchronization.