Side link discontinuous reception method

A discontinuous reception and side chain technology, applied in connection management, wireless communication, synchronization devices, etc., can solve the problem of not adapting to the discontinuous reception mechanism of side link communication, and achieve the effect of ensuring transmission and feedback

Active Publication Date: 2020-08-18
CHINA ACADEMY OF INFORMATION & COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a side link discontinuous reception method, which solves the problem that the existing method is not suitable for the side link communication discontinuous reception mechanism

Method used

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  • Side link discontinuous reception method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0037] figure 1 It is an embodiment of an existing DRX mechanism, used for communication between a base station and a terminal.

[0038] When the terminal is in the active state, if it detects the PDCCH sent by the base station, it will start a continuous activation timer (drx-inactivityTimer), and the timer will restart every time it receives a PDCCH indicating a new transmission. For downlink transmission, the terminal starts a HARQ downlink timer (drx-HARQ-RTT-TimerDL) corresponding to the downlink HARQ process after making HARQ (Hybrid Automatic Repeat Request) feedback for the downlink data. After the timeout, if the data in the process is not successfully decoded, start the downlink retransmission timer (drx-RetransmissionTimerDL). For uplink transmission, after sending uplink data, the terminal starts a HARQ uplink timer (drx-HARQ-RTT-TimerUL) corresponding to the uplink HARQ process, and starts uplink retransmission timing (drx-RetransmissionTimerUL) after the timer e...

no. 2 Embodiment

[0041] Fig. 2(a) is a method flow of a sending terminal of a side link discontinuous reception method embodiment, which can be used for a sending terminal of a side link communication discontinuous reception mechanism, as the second embodiment of the present invention, a side link The discontinuous reception method specifically includes the following steps:

[0042] Step 101, acquiring the side link discontinuous reception (SL DRX) configuration parameters.

[0043] In step 101, the side link discontinuous reception configuration parameters are used to make the terminal in the side link communication be in the active state or inactive state of the discontinuous reception mechanism periodically, including at least one of the following parameters: side link The discontinuous reception time parameter, the side link discontinuous reception timer, the start time of the end of the side link communication activation state; the side link discontinuous reception time parameter is used ...

no. 3 Embodiment

[0111] Fig. 3 (a) is a method flow of a sending terminal method of an embodiment of a side link discontinuous reception method indicated by a receiving end timer, a side link discontinuous reception method, which specifically includes the following steps:

[0112] Step 301, acquiring configuration parameters of the side link DRX.

[0113] In step 301, the side link discontinuous reception timer in the side link discontinuous reception configuration parameter is at least one of the following: the second timer, the third timer, and the fourth timer.

[0114] The method for obtaining configuration parameters of side link discontinuous reception in step 301 is discussed in detail in step 101, and the discussion will not be repeated here.

[0115] Step 302: According to the side link discontinuous reception configuration parameters, after detecting the scheduling information indicating SL transmission, send the PSCCH and the corresponding PSSCH to the receiving terminal, and enter ...

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Abstract

The invention provides a side link discontinuous reception method, which solves the problem that an existing method is not suitable for a side link communication discontinuous reception mechanism. Theside link discontinuous reception configuration parameters are used for enabling a terminal in side link communication to be periodically in an activated or non-activated state of a discontinuous reception mechanism, and at least comprise one of the following parameters is included: a side link discontinuous reception time parameter, a side link discontinuous reception timer and side link communication activated state end starting time; the side link discontinuous reception time parameter is used for indicating the period length, the activation state starting time and the activation durationof a discontinuous reception mechanism; the sidelink discontinuous reception timer is used for indicating the duration of an activated state when the side link communication terminal performs side link communication; wherein the start time for ending the activated state of the side link communication is the time for the terminal to enter the non-activated state after the data interaction is endedin the side link communication. According to the method, a discontinuous reception mechanism is used in side link communication.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a side link discontinuous reception method. Background technique [0002] In the existing system, a Discontinuous Reception (DRX) solution is applied between the base station and the terminal. After the terminal is configured with DRX, it can discontinuously listen to the PDCCH sent by the base station to achieve the purpose of energy saving. The specific basic method of DRX is that the base station configures the DRX function and related parameters for the terminal (UE). Inactive "Inactive" two states. The existing DRX mechanism is used for the communication between the terminal and the base station, and is not suitable for the communication between the terminals under the side link, and there is no corresponding solution for the discontinuous reception method under the side link. Contents of the invention [0003] The invention provides a side link discontinuou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/28H04W76/23H04W56/00H04W24/02
CPCH04W76/28H04W76/23H04W56/00H04W24/02
Inventor 沈霞
Owner CHINA ACADEMY OF INFORMATION & COMM
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