US 10,560,930 B2
Enhanced physical downlink control channel supporting common search space
Awais M. Hussain, Milpitas, CA (US); Tarik Tabet, Los Gatos, CA (US); and Syed Aon Mujtaba, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 27, 2018, as Appl. No. 16/113,039.
Application 16/113,039 is a continuation of application No. 15/076,967, filed on Mar. 22, 2016, granted, now 10,064,170, issued on Aug. 28, 2018.
Claims priority of provisional application 62/142,830, filed on Apr. 3, 2015.
Prior Publication US 2018/0368121 A1, Dec. 20, 2018
Int. Cl. H04W 72/04 (2009.01); H04L 5/00 (2006.01)
CPC H04W 72/042 (2013.01) [H04L 5/0053 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a cellular base station (BS) to provide a cell, comprising: by the BS:
allocating a plurality of resource blocks (RBs) of a subframe as an enhanced physical downlink control channel (EPDCCH) separately specified for link-budget limited (LBL) user equipment (UE) devices of the cell;
providing control information on a common search space in the EPDCCH for one or more of the LBL UE devices of the cell during the subframe, wherein providing the control information on the common search space for the one or more of the LBL UE devices of the cell using the EPDCCH allows the one or more of the LBL UE devices to receive paging message indications via the EPDCCH when operating in idle mode, and wherein at least one aggregation level specified for the common search space of the EPDCCH for the LBL UEs is higher than a highest aggregation level in a common search space of a physical downlink control channel (PDCCH).