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DRX (discontinuous reception) mode starting method, user equipment (UE), base station and system

A technology of user equipment and mode, applied in the field of communication, can solve problems such as inappropriate timing, UE cannot receive status report in time, RRC reconstruction, etc., and achieve the effect of avoiding inappropriate startup timing

Active Publication Date: 2014-08-06
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] From the above example, it can be seen that due to the inappropriate timing for the UE and the base station to start the DRX mode for the first time, the UE cannot receive the status report for the RRC reconfiguration complete message sent by the base station in time, thus causing the UE to repeatedly send the RRC reconfiguration complete message This leads to unnecessary power consumption, and even causes RLC retransmission overrun and RRC reconstruction

Method used

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  • DRX (discontinuous reception) mode starting method, user equipment (UE), base station and system
  • DRX (discontinuous reception) mode starting method, user equipment (UE), base station and system
  • DRX (discontinuous reception) mode starting method, user equipment (UE), base station and system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Such as figure 1 As shown, in the related art, in the DRX mode, when there is no service, Active Time and Non-active Time appear alternately, and Active Time starts periodically. The UE only receives the data sent by the base station during the Active Time period; it does not receive the data sent by the base station during the Non-activeTime period, and does not detect the PDCCH. The period between the two points AB is the Active Time period, which is the running time of the onDuration Timer configured by the base station.

[0095] Such as figure 2 As shown, in the related art, in the DRX mode, when there is service, when the UE detects the PDCCH scheduled by the base station, the Active Time will be further extended, specifically the running time of the Inactivity Timer. The value of the Inactivity Timer is variable, and the shortest is 1 millisecond.

[0096] Such as figure 2 As shown, in the related art, when the UE enters the Non-active Time period and there ...

Embodiment 2

[0102] Figure 10 is a schematic diagram of a DRX mode startup scenario according to Embodiment 2 of the present invention, where Figure 10 Among them, A, B and figure 1 Same, C is Found a UL Grant (found a UL Grant), G is Inactivity Timer expires (Inactivity Timer expires), H is RRC reconfiguration complete send (RRC reconfiguration complete send), I is RRC reconfiguration complete HARQ retransmission (RRC reconfiguration complete HARQ retransmission is completed), L is RRC reconfiguration received (received RRC reconfiguration), N is Received DL assignment (DCI) and start DRX mode (received DCI, start DRX mode).

[0103] Such as Figure 10 Shown, in embodiment scheme 2 of the present invention, and image 3 The difference is that the DRX mode is not started at the time L, and after the HARQ retransmission of the RRC reconfiguration completion message is performed at the time I, the DRX mode is started when the new downlink allocation (newly transmitted DCI) issued by the...

Embodiment 3

[0106] Embodiment 3 serves as a kind of implementation manner of scheme 2.

[0107] Figure 11 It is a flowchart of a method for starting a DRX mode of a UE according to Embodiment 3 of the present invention, as shown in Figure 11 As shown, the method includes step S1102 to step S1112:

[0108] Step S1102, the UE receives the RRC reconfiguration message (carrying DRX configuration) from the base station;

[0109] Step S1104, setting the state as DRX pre-start state 1;

[0110] Step S1106, the UE MAC indicates that the uplink HARQ transmission is successful;

[0111] Step S1108, set the state transition to DRX pre-start state 2;

[0112] Step S1110, receiving the downlink DCI newly transmitted by the base station;

[0113] Step S1112, start the DRX mode.

[0114] When any one of the above input conditions is not satisfied, the DRX mode cannot be started. Figure 11 Only the processing procedure when the condition is satisfied is shown.

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Abstract

Disclosed are a DRX mode starting method, a user equipment, a base station, and a system. The method comprises: determining whether a status report corresponding to an RRC reconfiguration complete message is received; and starting a DRX mode if the determination result is positive. By means of the present invention, a UE and a base station start a DRX mode at the right time and coordinate to achieve consistency, so that an RRC reconfiguration process and subsequent anomalies can be avoided, and unnecessary retransmission of an RRC reconfiguration complete message and electric power consumption caused by the fact that the UE does not receive a status report during the RRC reconfiguration process can be prevented.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a discontinuous reception (Discontinuous Reception, DRX for short) mode activation method, user equipment, base station and system. Background technique [0002] In a Long Term Evolution (LTE for short) system, a DRX mode is defined for power saving of a user equipment (User Equipment, UE for short). In the DRX mode, the UE does not need to perform blind detection of the Physical Downlink Control Channel (PDCCH) in every subframe, which provides conditions for turning off the receiving circuit. [0003] In DRX mode, Active Time and Non-active Time exist alternately, and UE enters Non-active Time after leaving Active Time. In DRX mode, UE only needs to perform PDCCH blind detection during Active Time. The Active Time is determined according to DRX parameters configured by an evolved base station (Evolved Node B, eNodeB for short) and service scheduling conditions. fig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W72/12
CPCH04W52/02H04W52/0235Y02D30/70
Inventor 王利
Owner SANECHIPS TECH CO LTD
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