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Congestion control method and equipment on side link

A congestion control, secondary link technology, applied in the field of communications

Active Publication Date: 2021-04-09
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] An object of the embodiments of the present invention is to provide a congestion control method and equipment on the secondary link to solve the problem of how to ensure the transmission of high-reliability and low-delay services

Method used

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  • Congestion control method and equipment on side link
  • Congestion control method and equipment on side link
  • Congestion control method and equipment on side link

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0142] This embodiment introduces the mapping relationship between the high-layer parameters predefined by the protocol or configured on the network side and the priority of the physical layer. For details, refer to Table 1-Table 5.

[0143] Table 1:

[0144]

[0145] Table 2:

[0146]

[0147] table 3:

[0148]

[0149] Table 4:

[0150]

[0151] table 5:

[0152]

Embodiment 2

[0154] This embodiment introduces the mapping relationship between the terminal-related dynamic parameters and the physical layer priority predefined by the protocol or configured on the network side, see Table 6 for details.

[0155] Table 6:

[0156] physical layer priority 5G Quality of Service Identifier (5QI) business type remaining time(ms) The number of times preempted 0 1 or 2 10 0 1 3 or 4 Unicast 9 1 2 5 or 6 8 2 3 7 or 8 multicast 7 3 4 9 or 10 6 4 5 11 or 12 broadcast 5 5 6 13 or 14 4 6 … … … …

[0157] Among them, the service of UE1 is a multicast service, the value of 5QI is 11, the remaining time is 8ms, and the number of times of being preempted is 0; the service of UE2 is a unicast service, the value of 5QI is 7, the remaining time is 5ms, and the number of times of being preempted is 0 3.

[0158] The physical layer priority of UE1 is 3+5+2+0=10; the physical...

Embodiment 3

[0160] combine image 3 , this embodiment introduces the resource preemption process, and the specific steps are as follows:

[0161] Step 1: UE1 reserves a resource time slot (slot) X at TTI=n, UE1 obtains the physical layer priority of UE1 as 10 according to the physical layer priority mapping rule, and broadcasts the physical layer priority in the secondary link control information level and other information.

[0162] Step 2: UE2 receives the secondary link control information broadcast by UE1, and obtains the physical layer priority of UEI.

[0163] Step 3: UE2 receives a packet at TTI=n+5, and the physical layer priority of UE2 is obtained as 12 according to the physical layer priority mapping rule.

[0164] Step 3: UE2 determines candidate resources:

[0165] a) UE2 compares the RSRP between UE1 and UE2 measured in the sensing (sensing) phase with a predefined SL-RSRP threshold value.

[0166] b) If the RSRP is greater than the SL-RSRP threshold, and the physical la...

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Abstract

The embodiment of the invention provides a congestion control method and equipment on a side link. The method comprises the following steps: determining a physical layer priority mapping rule; determining a physical layer priority or a physical layer priority count value of the first terminal according to the physical layer priority mapping rule, wherein the physical layer priority or the physical layer priority count value is used for determining transmission resources of the first terminal. In the embodiment of the invention, through the definition and use of the priority of the physical layer, the transmission of the low-delay high-reliability service is ensured, the negative influence of a resource preemption mechanism on the low-priority terminal is reduced, and the overall performance of the system can be better improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a congestion control method and device on a side link (Sidelink, SL, or called a side link, side link, or side link). Background technique [0002] With the development of mobile communication technology, more and more technologies for improving communication efficiency have been introduced. For example: [0003] 1. About Sidelink: [0004] Sidelink is used for direct data transmission between end-user equipment (User Equipment, UE) without going through network equipment, and is suitable for specific public safety affairs (such as emergency communication in disaster places such as fire places or earthquakes), or vehicle networking (vehicle to everything, V2X) communication, etc. Vehicle networking communication includes various services, such as basic safety communication, advanced (automatic) driving, platooning, sensor expansion and so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02
CPCH04W28/0289H04W28/0268H04W28/0236H04W28/02H04W72/1263H04W72/569H04W72/54
Inventor 姜炜纪子超彭淑燕
Owner VIVO MOBILE COMM CO LTD
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