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Congestion control method and device

A technology of congestion control and congestion rate, applied in vehicle components, network traffic/resource management, electrical components, etc., can solve problems such as poor communication quality, transmission delay of receiving wrong data packets, affecting user experience, etc.

Active Publication Date: 2022-03-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If resources are reserved in the shared resource pool for terminal devices that use mode 1 to obtain resources and / or terminal devices that use mode 2 to obtain resources, when the resources of terminal devices that use mode 1 (or mode 2) to obtain resources When in a congested state, the terminal device using mode 1 (or mode 2) to obtain resources continues to send data packets on the resource in the congested state, and there will be packet loss or data packet reception errors or large packet transmission delays, etc. Lead to poor communication quality and affect user experience

Method used

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  • Congestion control method and device
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  • Congestion control method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0102] Example 1: The congestion state information includes the channel congestion rate.

[0103] Optionally, for any time slot within the measurement window, the terminal device obtains the channel congestion rate of the any time slot, including: the terminal device according to the subchannel available to the terminal device in the any time slot , the signal strength received by the sidelink indicates the number of subchannels greater than or equal to the second threshold, the total number of subchannels included in any one time slot, and the second resource allocation in any time slot The number of sub-channels associated with the mode, and obtain the channel congestion rate of any time slot.

[0104] In the following, the measurement window length is T 1 , the terminal device adopts mode 1, and there are resources reserved in the resource pool for terminal devices that use mode 2 to obtain resources as an example. This paper introduces the specific process for the termina...

example 2

[0112] Example 2: Congestion status information includes channel occupancy.

[0113] Optionally, for any time slot within the measurement window length, the terminal device obtains the channel occupancy rate of the any time slot, including: the terminal device according to the available sub-channels of the terminal device in the any time slot The number of occupied sub-channels in the channel, the total number of sub-channels included in the any time slot, and the number of sub-channels associated with the second resource allocation mode in the any time slot, and obtain the any The channel occupancy rate of a time slot.

[0114] In the following, the measurement window length is T 1 +T 2 +1, the terminal device adopts mode 1, and there are resources reserved in the resource pool for terminal devices that use mode 2 to obtain resources as an example to introduce the specific process of the terminal device obtaining the channel occupancy rate of each time slot within the measu...

example 3

[0124] Example 3: the congestion state information includes the channel congestion rate.

[0125] In the following, the measurement window length is T 1 , the terminal device adopts mode 1, and resources are reserved in the resource pool for terminal devices that obtain resources in mode 2 as an example to introduce the specific process of obtaining the channel congestion rate by the terminal device.

[0126] End devices can be based on the formula or formula or formula or formula Calculate the channel congestion rate.

[0127] In the following, the measurement window length of the channel congestion rate is T 1 , the terminal equipment adopts mode 2, and the resources in the resource pool are reserved for the terminal equipment acquiring resources in mode 1 as an example, and introduces the channel congestion rate obtained by the terminal equipment.

[0128] End devices can be based on the formula or formula or formula or formula Calculate the channel conges...

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Abstract

Embodiments of the present application provide a congestion control method and device, which relate to the field of wireless communication. If there are resources associated with the second resource allocation method in the resource pool, the terminal device can obtain the data packet to be transmitted for sending the terminal device according to the congestion state information The first resource, thus reducing packet loss or data packet reception errors, thereby improving communication quality and improving user experience.

Description

technical field [0001] The present application relates to the field of wireless communication, in particular to a congestion control method and device. Background technique [0002] In the Rel-14, Rel-15 and Rel-16 versions of the "Third Generation Partnership Project", vehicle to everything (V2X) was successfully established as a main application of device to device (D2D) technology. V2X is for sidelink communication, that is, direct communication between the sending terminal and the receiving terminal. V2X will optimize the specific application requirements of V2X on the basis of the existing D2D technology, further reduce the access delay of V2X devices, and solve the problem of resource conflicts. [0003] The resource allocation methods of the sidelink include mode 1 and mode 2. In mode 1, the network device configures resources for the sending terminal. In mode 2, the sending terminal selects resources without network device control. If resources are reserved in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/02H04W72/04H04W72/08H04W4/40
CPCH04W28/0289H04W72/0446H04W4/40H04W72/543H04W72/542H04W28/02H04W72/04H04W72/54
Inventor 刘哲黎超张兴炜
Owner HUAWEI TECH CO LTD