(19) United States (12) Patent Application Publication (10) Pub
US 20140071868A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2014/0071868 A1 Bergquist et al. (43) Pub. Date: Mar. 13, 2014 (54) APPARATUSES AND METHODS FOR Publication Classi?cation MANAGING PENDING HARQ RETRANSMISSIONS (51) Int. Cl. H04W 76/04 (2006.01) (71) Applicants:Gunnar Bergquist, Kista (SE); Riikka H04L 1/18 (2006.01) Susitaival, Helsinki (Fl); Anders Ohlsson, Jarfalla (SE); Mikael (52) US. Cl. Wittberg, Uppsala (SE) CPC ......... .. H04W 76/048 (2013.01); H04L 1/1803 (2013.01) (72) Inventors: Gunnar Bergquist, Kista (SE); Riikka USPC ......................................... .. 370/311; 370/328 Susitaival, Helsinki (Fl); Anders Ohlsson, Jarfalla (SE); Mikael Wittberg, Uppsala (SE) (57) ABSTRACT (73) Assignee: Telefonaktiebolaget L M Ericsson (publ), Stockholm (SE) Methods and systems present solutions to, for example, the (21) Appl. No .: 13/825,462 problem of unnecessary preparedness for suspended retrans missions in the user equipment (UE) Which contributes to (22) PCT Filed: Nov. 9, 2012 poWer drain in the device battery. One method for monitoring a Physical DoWnlink Control Channel (PDCCH) for adaptive PCT No.: PCT/SE2012/051225 (86) retransmission grants in a radio communication system § 371 (0X1), includes: monitoring, by a user equipment (U E), the PDCCH (2), (4) Date: Mar. 21, 2013 for adaptive retransmission grants; receiving, by the UE, a Related US. Application Data hybrid automatic repeat request (HARQ) acknowledge (ACK) message, and ceasing, by the UE, to monitor the (60) Provisional application No. 61/646,757, ?led on May PDCCH for adaptive retransmission grants after receipt of the 14, 2012. HARQ ACK message. -------- -- RADIO BEARERS BCCH PCCH SEGM.
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