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Battery consumption control method of user equipment in mobile communication system

a mobile communication system and battery consumption technology, applied in the direction of instruments, synchronisation arrangements, high-level techniques, etc., can solve the problems of unnecessary battery consumption, degradation of drx efficiency, etc., and achieve the effect of avoiding unnecessary waste of battery power and improving drx performan

Inactive Publication Date: 2012-10-11
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]Aspects of the present invention are to address at least the above-mentioned problems and / or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present invention is to provide a battery control method and apparatus that is capable of improving DRX performance and avoiding an unnecessary waste of battery power by skipping active time when a specific condition is fulfilled.
[0010]In accordance with another aspect of the present invention, a terminal for supporting transmission in SPS mode to improve battery conservation is provided. The terminal includes a transceiver which receives data and control signals through a downlink channel of a serving cell and transmits data and control signals through an uplink channel, and a controller which controls to determine, when a HARQ ACK is received, whether a suspension restriction condition is fulfilled and stopping, when the suspension restriction condition is fulfilled, suspension to flush an HARQ buffer and not monitor a retransmission grant.
[0011]In accordance with still another aspect of the present invention, a base station for performing transmission in SPS mode to improve battery conservation of a terminal is provided. The base station includes a transceiver which transmits data and control signals on a downlink carrier and receives data and control signals on an uplink carrier, and a controller which determines whether a maximum number of transmissions is reached, determines, when the maximum number of transmissions is reached, whether the terminal fulfills a suspension restriction condition, and controls stopping, when the terminal fulfills the suspension restriction condition, suspension to flush a HARQ buffer and not transmit a retransmission grant.

Problems solved by technology

Although it will be described later, this gives an effect of enforcing the UE to monitor the PDCCH at every 4 msec, resulting in a degradation of DRX efficiency and unnecessary battery consumption.

Method used

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  • Battery consumption control method of user equipment in mobile communication system
  • Battery consumption control method of user equipment in mobile communication system
  • Battery consumption control method of user equipment in mobile communication system

Examples

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first exemplary embodiment

[0051]For convenience in explanation, the terms related to DRX are explained as follows.

[0052]In the following description, Active Time denotes a period determined for receiving the PDCCH in the DRX mode. In order for the UE to receive the adaptive retransmission grant, the time for receiving the PDCCH is included in the Active time. The active time can be defined in more detail as follows:[0053]at least one of an onDurationTimer, a drx-InactivityTimer, a drx-RetransmissionTimer, and a mac-ContentionResolutionTimer is running (first type active time);[0054]Scheduling Request is sent on the PUCCH and is pending (second type active time);[0055]uplink grant for a pending HARQ retransmission can occur and there is data in the corresponding HARQ buffer (third type active time);[0056]PDCCH indicating a new transmission addressed to the Cell-Radio Network Temporary Identifier (C-RNTI) of the UE has not been received after successful reception of a Random Access Response for the preamble no...

second exemplary embodiment

[0092]The traffic of a real-time service such as VoIP is generated in a regular pattern. For example, the pattern may alternate between a short on-period and an off-period. Meanwhile, since the active time of DRX is relatively long, this may cause a problem in that the UE maintains the on-period unnecessarily in an active time.

[0093]The second exemplary embodiment of the present invention proposes a method and apparatus for improving the battery efficiency of the UE by dividing the DRX structure into two layers.

[0094]The active time can be categorized into two patterns, namely first and second patterns. The first pattern corresponds to an active time, and the second pattern uses a part of the active time defined in the first pattern for an actual active period. The second pattern is not always enabled. That is, the second pattern may be enabled when a predetermined condition is fulfilled and disabled when another condition is fulfilled. If the second pattern is activated, the actual...

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Abstract

A method and apparatus for controlling battery consumption of the User Equipment (UE) equipped with a feature such as Carrier Aggregation is provided. The battery consumption control method of a terminal operating in Semi-Persistent Scheduling (SPS) mode includes determining, when Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement (ACK) is received, whether a suspension restriction condition is fulfilled, and stopping, when the suspension restriction condition is fulfilled, suspension to flush an HARQ buffer and not monitor a retransmission grant. The battery consumption control method may improve Discontinuous Reception (DRX) efficiency and reduce an unnecessary waste of battery power.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit under 35 U.S.C. §119(e) of a U.S. Provisional application filed on Apr. 5, 2011 in the U.S. Patent and Trademark Office and assigned Ser. No. 61 / 471,872, and under 35 U.S.C. §119(a) of a Korean patent application filed on Apr. 5, 2012 in the Korean Intellectual Property Office and assigned Ser. No. 10-2012-0035570, the entire disclosure of each of which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a battery control method and apparatus of a User Equipment (UE). More particularly, the present invention relates to a method and apparatus for controlling battery consumption of the UE equipped with a feature, such as Carrier Aggregation (CA), so as to improve functionality.[0004]2. Description of the Related Art[0005]Various research is being conducted to efficiently support Voice over Internet Protocol (VoIP) in recent m...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W52/02
CPCH04W52/0219H04W52/0216H04W56/0005H04W56/0015H04W56/0045H04W56/005H04W52/146H04W52/367H04W52/50H04W74/0833H04L1/1835H04L1/1851H04L1/1854H04L1/1874H04L1/1883H04L5/001H04L5/0098H04L27/2662H04W48/08H04W88/08H04W76/38H04W76/19H04W74/006Y02D30/70H04W74/0858H04W72/23H04W72/21H04W72/00H04W72/04H04W56/001H04W72/0453H04W84/042H04W72/0446H04W24/04H04W28/04H04W74/085H04W74/0891H04L5/0048
Inventor KIM, SOENGHUNVAN LIESHOUT, GERT-JANJANG, JAEHYUK
Owner SAMSUNG ELECTRONICS CO LTD
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