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A congestion control method, terminal and computer-readable storage medium

A congestion control and terminal technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve problems such as packet loss, inability to consider carrier joint adjustment, reduce service transmission reliability, etc., and achieve the effect of improving reliability

Active Publication Date: 2020-10-30
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] (1) The existing congestion control mechanism is based on the granularity of the resource pool for internal measurement and adjustment of the resource pool. It limits the service transmission conditions in the case of congestion, which will reduce the reliability of service transmission to a certain extent;
[0020] (2) In the case of multi-carrier transmission, the existing congestion control mechanism cannot consider the situation between the carriers or the situation of the service packets sent by each carrier for joint adjustment
At the same time, for the second scenario above, if congestion occurs on a certain carrier, the transmission power is reduced or the number of retransmissions is reduced, which will reduce the reliability of the segmented service packets transmitted at the same time on the congested carrier; and if the adjustment If the maximum value of CRlimit causes CR to exceed the threshold, packet loss processing will be performed on the congested carrier
For segmented service packets transmitted at the same time, if the segmented service packets sent on any of the carriers cannot be successfully received by the receiving end, even if other service packets are successfully received, the receiving end cannot successfully merge the segmented service packets before the sending end. big business package

Method used

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  • A congestion control method, terminal and computer-readable storage medium
  • A congestion control method, terminal and computer-readable storage medium
  • A congestion control method, terminal and computer-readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0068] In the above step 13, when reselecting a carrier for the service packet sent by the terminal on the first type of carrier, it can be specifically implemented in the following manner:

[0069] 1) For the first service packet sent on the carrier of the first type, the terminal stops sending the first service packet on the carrier of the first type, and the first service packet is a segmented service packet or a non-segmented service packet Segment business package.

[0070] Here, the segmented service package means that the same service package has been segmented and divided into multiple parts, and each part is a segmented service package. A non-segmented service package refers to a service package that has not been segmented.

[0071] 2) Reselecting the carrier for sending the first service packet from the second type of carrier, the second type of carrier includes: the carrier that the terminal is not currently sending a service on and that is not congested, and the t...

example 2

[0078] In the above step 13, when reselecting a carrier for the service packet sent by the terminal on the first type of carrier, it can be specifically implemented in the following manner:

[0079] 1) For the first service package sent on the first type of carrier, determine whether there is a third service package in the first service package, and the third service package is at the same time domain position as the first service package A second service packet to be sent, where the second service packet is a service packet sent by the terminal on a carrier of a third type, and the carrier of the third type is a carrier on which the terminal is currently sending services and no congestion occurs.

[0080] 2) Determine the reselection service package that requires carrier reselection, wherein, if there is a third service package, the reselection service package includes the first service package and the third service package; if there is no third service package, the The resel...

example 3

[0089] In the above step 13, when the service package on the first type of carrier is a segmented service package, when adjusting the size of the service package of the terminal on the first type of carrier, it can be implemented in the following manner :

[0090] 1) Adjusting the transmission parameters of the first type of carrier, and determining the adjusted transmission resource of the first type of carrier.

[0091] Here, adjusting the transmission parameters of the first type of carrier includes but is not limited to one or more of the following adjustment methods: adjusting the transmission power on the first type of carrier; adjusting the number of retransmissions on the first type of carrier; adjusting The number of PSSCH sub-channels on the first type of carrier; adjusting the value of the modulation and coding strategy (MCS Range) on the first type of carrier; adjusting the maximum value of CRlimit on the first type of carrier, etc.

[0092] 2) Re-segmenting the s...

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Abstract

A congestion control method, terminal, and computer-readable storage medium provided by an embodiment of the present invention, the method includes: acquiring measured values ​​of congestion parameters on multiple carriers; and selecting the The first type of carrier where the terminal is currently sending services and is congested; reselecting a carrier for the service packet sent by the terminal on the first type of carrier, and / or, adjusting the terminal on the first type of carrier The size of the business package. The present invention can realize congestion control based on carrier adjustment or segmented service package adjustment under multi-carrier, and improve the reliability of service package transmission.

Description

technical field [0001] The present invention relates to the technical field of congestion control, in particular to a congestion control method, a terminal and a computer-readable storage medium. Background technique [0002] In the current 3GPP protocol version, Long Term Evolution-Vehicle-to-Anything (LTE-V2X) performs service transmission on a single carrier and does not support carrier aggregation. Its congestion control is performed at the granularity of resource pools. [0003] From the perspective of reception, a pool-specific channel busy ratio (CBR, Channel busy ratio) measurement is defined for transmission pools (including transmission pools and exceptional pools), indicating the resource occupancy of each transmission pool perceived by the receiving node. [0004] According to the relevant agreement, if the sending terminal (UE) has a transport block (TB) that needs to be sent in n+4 subframes, it needs to perform CBR measurement in n subframes, and the time wind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/02H04W72/04H04W72/08H04W72/12
CPCH04W28/02H04W72/04H04W72/12H04W72/54
Inventor 李晨鑫赵锐赵丽冯媛林琳
Owner DATANG MOBILE COMM EQUIP CO LTD
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