US 9,813,124 B2
Methods for codeword level interference cancellation with network assistance
Lung-Sheng Tsai, Tainan (TW); Xiangyang Zhuang, Lake Zurich, IL (US); and Pei-Kai Liao, Nantou County (TW)
Assigned to MEDIATEK INC., Hsinchu (TW)
Filed by MEDIATEK INC., Hsinchu (TW)
Filed on Nov. 26, 2014, as Appl. No. 14/555,271.
Claims priority of provisional application 61/909,494, filed on Nov. 27, 2013.
Prior Publication US 2015/0146657 A1, May 28, 2015
Int. Cl. H04B 7/0452 (2017.01); H04B 1/10 (2006.01); H04B 7/06 (2006.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01); H04J 11/00 (2006.01); H04W 72/04 (2009.01); H04W 28/06 (2009.01); H04W 28/18 (2009.01)
CPC H04B 7/0452 (2013.01) [H04B 1/1027 (2013.01); H04B 7/0617 (2013.01); H04B 7/0619 (2013.01); H04J 11/004 (2013.01); H04J 11/005 (2013.01); H04L 1/00 (2013.01); H04L 5/0048 (2013.01); H04L 5/0073 (2013.01); H04L 5/005 (2013.01); H04W 28/06 (2013.01); H04W 28/18 (2013.01); H04W 72/042 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving a desired signal and an interfering signal by a user equipment (UE) in a serving cell of a mobile communication network;
obtaining a set of parameters related to the interfering signal, wherein the set of parameters comprises a first scrambling rule for de-scrambling the interfering signal, wherein the first scrambling rule is based on a sequence that is either cell-specific or configured by the network; and
cancelling a contribution of the interfering signals from the desired signals via codeword-level interference cancellation (CWIC) based on the set of parameters, wherein the UE descrambles a physical downlink control channel (PDCCH) for control information using a second scrambling rule associated with a UE-specific identity, and wherein the UE descrambles a physical downlink shared channel (PDSCH) for data information using the first scrambling rule.