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Cooperative diversity application method in 3GPP V2X

A technology of cooperative diversity and application method, applied in the field of Internet of Vehicles communication, can solve problems such as the inability of periodic communication performance to meet, and achieve the effect of improving transmission reliability and communication range

Inactive Publication Date: 2017-05-17
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the D2D communication mechanism is transplanted to the V2X field, the characteristics of the V2X system itself, such as high node density, frequent periodic communication, and high moving speed, make the performance of the mechanism unable to meet the requirements of the V2X system, and it needs to be enhanced

Method used

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  • Cooperative diversity application method in 3GPP V2X
  • Cooperative diversity application method in 3GPP V2X

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] The V2X node topology used in this embodiment is as follows figure 1 Shown.

[0127] 1. UE1 generates an emergency stop message Message1 that needs to be broadcast flooded, multiplexes the D2D communication mechanism, and makes a transmission request to eNodeB; eNodeB sends SA Grant and Data Grant to UE1, carrying scheduling information, and the scheduling information specifies the multi-hop transmission process The location of the time-frequency resource used by each hop;

[0128] 2. UE1 parses out the first hop SA and data retransmission times of the emergency parking service message according to the local pre-configuration information; UE1 performs the first transmission (SA1A) of the scheduling message SA1 corresponding to Message1 according to eNodeB resource scheduling, Use the field identifier in SA1A to declare that the message type of Message1 is emergency stop, and the maximum number of hops is 2 hops (the third hop node stops forwarding);

[0129] 3. UE2 / UE3 / UE4 / UE...

Embodiment 2

[0136] The V2X node topology used in this embodiment is as figure 2 Shown. In the figure, UE1 to UE8 are all Vehicle type nodes.

[0137] 1. UE1 generates an emergency stop message Message1 that needs to be broadcast and flooded, multiplexes the D2D communication mechanism, and makes a transmission request to eNodeB; eNodeB sends SA Grant and Data Grant to UE1, carrying scheduling information, and the scheduling information specifies the multi-hop transmission process The location of the time-frequency resource used by each hop;

[0138] 2. UE1 parses out the first hop SA and data retransmission times of the emergency parking service message according to the local pre-configuration information; UE1 performs the first transmission of the scheduling message SA1 corresponding to Message1 (SA1A) according to the resource scheduling of the eNodeB, In SA1A, use the field identifier to declare that the message type of Message1 is emergency stop, declare the geographic location informat...

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Abstract

The invention provides a cooperative diversity application method in 3GPP V2X. The cooperative diversity application method comprises the steps of transmitting control information by a V2X broadcast service initiator in a control resource pool, and then transmitting data information in the data resource pool; wherein the control information and the data information can be retransmitted, and the control information carries scheduling information for first transmission and possible retransmission of the data information; after the V2X broadcast service initiator transmits the data broadcast information, forwarding the data broadcast information by each relay node in a cooperative diversity manner with a random phase difference, wherein the forwarding manner comprises forwarding first transmission and forwarding retransmission of data and / or the control information. The cooperative diversity application method can improve QoS performance of service information under a precondition that parameters such as resource occupation and time delay are unchanged.

Description

Technical field [0001] The present invention relates to the communication technology of the Internet of Vehicles, in particular to a cooperative diversity application method in 3GPP V2X. Background technique [0002] With the rapid growth of vehicle ownership and density, and the frequent occurrence of road traffic accidents, the Internet of Vehicles has gradually become one of the hot topics in the communications field. The Internet of Vehicles through the mutual communication between vehicles and transportation facilities, combined with positioning systems, sensors, intelligent vehicle control systems, machine vision analysis and other technologies, can greatly improve the perception range and degree of perception of automotive active safety systems, and reduce the occurrence of traffic accidents. Probability, and can indirectly realize the effects of alleviating traffic congestion and improving road carrying capacity. [0003] V2X is a communication technology dedicated to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/00H04W72/04H04W40/22H04B7/026
CPCH04B7/026H04W40/22H04W76/14H04W72/30H04W72/20Y02D30/70
Inventor 周淼孙鹏
Owner BEIJING XINWEI TELECOM TECH
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