US 11,659,511 B2
Methods and arrangements in a telecommunications network
Robert Baldemair, Solna (SE); David Astely, Bromma (SE); Erik Dahlman, Stockholm (SE); and Ylva Jading, Stockholm (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Aug. 25, 2020, as Appl. No. 17/1,721.
Application 17/001,721 is a continuation of application No. 16/357,906, filed on Mar. 19, 2019, granted, now 10,791,532.
Application 16/357,906 is a continuation of application No. 14/532,781, filed on Nov. 4, 2014, granted, now 10,285,150, issued on May 7, 2019.
Application 14/532,781 is a continuation of application No. 13/379,602, granted, now 8,902,811, issued on Dec. 2, 2014, previously published as PCT/SE2010/050674, filed on Jun. 16, 2010.
Claims priority of provisional application 61/220,844, filed on Jun. 26, 2009.
Prior Publication US 2020/0389862 A1, Dec. 10, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 56/00 (2009.01); H04L 5/00 (2006.01)
CPC H04W 56/0045 (2013.01) [H04L 5/001 (2013.01); H04W 56/0065 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A base station for determining an uplink transmission timing correction for communication in a telecommunication system, the base station comprising:
a receiver for receiving an uplink (UL) signal on a selected UL component carrier from a user equipment, the selected UL component carrier being one among multiple UL component carriers comprised in an aggregation of Time Division Duplex (TDD) component carriers configured for the UE, each TDD component carrier having an UL allocation and a downlink (DL) allocation, and wherein two or more of the TDD component carriers have different UL and DL allocations;
a unit for measuring an arrival time of the UL signal, where the arrival time at the base station is influenced by a respective UL transmission timing used by the UE for the selected UL component carrier, as well as the propagation delay experienced by the UL signal;
a unit for determining a timing correction of the UL transmission timing based on the measured arrival time, and for determining for which further UL component carriers comprised in the aggregation of TDD component carriers the determined timing correction is valid, wherein the timing correction is determined to be valid for each further UL component carrier that has an associated DL timing reference aligned with a DL timing reference associated with the selected UL component carrier; and
a transmitter for sending to the user equipment the timing correction and information indicating for which of the further UL component carriers the timing correction is valid.