Apparatuses and methods for managing pending HARQ retransmissions

Patent metadata

Field	Value
Publication number	US-9019882-B2
Application number	US-201213825462-A
Country	US
Kind code	B2
Filing date	Nov 9, 2012
Priority date	May 14, 2012
Publication date	Apr 28, 2015
Grant date	Apr 28, 2015

Abstract

Methods and systems present solutions to, for example, the problem of unnecessary preparedness for suspended retransmissions in the user equipment (UE) which contributes to power drain in the device battery. One method for monitoring a Physical Downlink Control Channel (PDCCH) for adaptive retransmission grants in a radio communication system includes: monitoring, by a user equipment (UE), the PDCCH for adaptive retransmission grants; receiving, by the UE, a hybrid automatic repeat request (HARQ) acknowledge (ACK) message, and ceasing, by the UE, to monitor the PDCCH for adaptive retransmission grants after receipt of the HARQ ACK message.

First claim

What is claimed is:

1. A method for monitoring a Physical Downlink Control Channel (PDCCH) for adaptive retransmission grants in a radio communication system, the method comprising:
monitoring by a user equipment (UE), the PDCCH for adaptive retransmission grants;
receiving by the UE, a hybrid automatic repeat request (HARQ) acknowledge (ACK) message;
receiving, by the UE, a Medium Access Control (MAC) control element (CE); and
entering, by the UE, a reduced power sleep mode…

Assignees

• Ericsson Telefon Ab L M

Inventors

• Bergquist Gunnar
• Susitaival Riikka
• Ohlsson Anders
• Wittberg Mikael

Classifications

• H04W76/28 Primary

  Electricity · mapped topic

• H04L1/1864 Primary

  Electricity · mapped topic

• H04L1/1896

  Electricity · mapped topic

• H04L1/1803

  Electricity · mapped topic

• H04W76/048 Primary

  Electricity · mapped topic