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Mobile communication terminal and method for controlling same to receive downlink data

A mobile communication terminal and downlink data technology, which is applied in the field of mobile communication, can solve problems such as power waste, and achieve the effects of avoiding power consumption, saving power loss, and reducing running time

Inactive Publication Date: 2010-06-09
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the inventors found that in the current DRX and downlink HARQ cooperation mechanism, the HARQRTT Timer timer is started immediately when the PDCCH indicates downlink data transmission or the downlink data transmission is allocated in this subframe. In fact, when the eUE correctly receives the downlink data And when the ACK is fed back to the eNB, it will not cause the retransmission of the downlink data, so it is meaningless for the eUE to start the HARQ RTT Timer in this case, but it will cause unnecessary waste of power

Method used

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  • Mobile communication terminal and method for controlling same to receive downlink data
  • Mobile communication terminal and method for controlling same to receive downlink data
  • Mobile communication terminal and method for controlling same to receive downlink data

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Embodiment Construction

[0035] In the embodiment of the present invention, in order to reduce the power consumption of the eUE, the following technical solution is provided. The eUE starts the timer for controlling the reception of retransmission data only after the eUE feeds back NACK to the eNB, avoiding the timer starting after the downlink data is correctly received, thereby The power consumption of the eUE is saved.

[0036] see below image 3 As shown, still taking one DRX cycle and setting the DRX cycle as 20 subframes as an example, wherein: the length of the On Duration phase is two subframes. If the eUE monitors downlink data in the first subframe of the On Duration phase, the reception control process of the downlink data specifically includes the following steps:

[0037] S301. The eUE receives downlink data and judges whether the data is received correctly. If the data is received correctly, the eUE feeds back ACK (Acknowledgment) to the eNB; if the downlink data is not received correct...

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Abstract

The invention relates to a mobile communication terminal and a method for controlling the mobile communication terminal to receive downlink data so as to reduce the consumption of the power of the communication terminal, belonging to the mobile communication technology, in particular to the technology for controlling the mobile communication terminal to discontinuously receive the uplink data. In the embodiment of the invention, a timer used for monitoring the retransmitted data receiving time is started after it is judged that the downlink data is not received correctly, thus the timer can not be started after the downlink data is received correctly, the starting time of the timer is greatly reduced, and the additional power consumption is avoided. Furthermore, the timer is started at the time of sending the negative acknowledgement (NACK), thus the set time length of the timer is shortened, the running time of the first timer is shorted and the loss of the power of evolved user equipment (eUE) is saved accordingly.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a technology for discontinuously receiving mobile terminals to receive downlink data. Background technique [0002] The Discontinuous Reception (DRX) function allows the user equipment (UserEquipment: UE) to turn off the receiver under certain conditions without having to listen to the Physical Downlink Control Channel (PDCCH) all the time, thereby saving UE power the goal of. [0003] The basic principle of DRX is as follows figure 1 As shown, the DRX cycle is composed of a continuous PDCCH listening phase (OnDuration) and a possible dormancy phase (Opportunity for DRX). The unit of the length of the On Duration phase and the Opportunity for DRX phase is the number of subframes. In the On Duration phase, the UE must continuously listen to each subframe containing the PDCCH to obtain the resource allocation indication for uplink and downlink transmission of each subframe, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W76/04
CPCH04W52/0216H04W52/02H04L1/1848H04W28/04Y02D30/70
Inventor 谢芳胡臻平崔春风
Owner CHINA MOBILE COMM GRP CO LTD
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