Broadcast information transmission method in 3GPP V2X communication

A technology for broadcasting messages and transmission methods, which is applied in wireless communication, broadcast service distribution, sustainable communication technology, etc., and can solve problems affecting system performance, prone to collisions in relay forwarding behavior, and occupying large time-frequency resources, etc.

Inactive Publication Date: 2017-02-22
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The broadcast communication mechanism in D2D communication can show good performance when applied to a single hop, but for broadcast services that require multi-hop nodes to participate in forwarding, when the number of relay nodes is large, the transmission of this service requires a large amount of time and frequency resources, and the relay forwarding behavior between different nodes is prone to collisions, seriously affecting system performance

Method used

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  • Broadcast information transmission method in 3GPP V2X communication
  • Broadcast information transmission method in 3GPP V2X communication
  • Broadcast information transmission method in 3GPP V2X communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The V2X node topology used in this embodiment is as follows figure 1 shown.

[0069] Step a: UE1 generates an emergency message Message1 that needs broadcast flooding, multiplexes the D2D communication mechanism, and submits a transmission request to eNodeB; eNodeB sends SA Grant and Data Grant to UE1, carrying scheduling information, which specifies the multi-hop forwarding process in the scheduling information Time-frequency resource location used by each hop;

[0070] Step b: UE1 broadcasts Message1, uses the field identification bit in the scheduling message SA1 corresponding to Message1 to directly declare that Message1 requires receiving nodes to participate in forwarding, the forwarding node type is all nodes (including Vehicle / Infrastructure / Pedestrian), and declares the maximum hop The number is 2 hops (the third hop node stops forwarding), and the current hop number is the 0th hop; it carries the time-frequency resource positions used in the forwarding proces...

Embodiment 2

[0077] The V2X node topology used in this embodiment is as follows figure 2 shown.

[0078] Step a: UE1 generates an emergency message Message1 that needs broadcast flooding, multiplexes the D2D communication mechanism, and submits a transmission request to eNodeB; eNodeB sends SA Grant and Data Grant to UE1, carrying scheduling information, which specifies the multi-hop forwarding process in the scheduling information The time-frequency resource location used by the 0th hop;

[0079] Step b: UE1 broadcasts Message1, uses the field identification bit in the scheduling message SA1 corresponding to Message1 to directly declare that Message1 requires receiving nodes to participate in forwarding, the forwarding node type is all nodes (including Vehicle / Infrastructure / Pedestrian), and declares the source node geographical location and receiving distance threshold, and indirectly declares that the communication group to which Message1 belongs is Group A through scrambling;

[008...

Embodiment 3

[0088] The V2X node topology used in this embodiment is as follows image 3 shown.

[0089] Step a: UE1 generates an emergency message Message1 that needs to be broadcast and flooded, determines the scheduling information by itself, and randomly selects resources to use from the SA resource pool and the data resource pool;

[0090] Step b: UE1 broadcasts Message1, directly declares the message type as traffic accident notification through the field identification bit in Message1, and declares the geographical location of the source node, the receiving distance threshold and the geographical direction of transmission;

[0091] Step c: UE2 / UE3 receives SA1 and Message1 broadcasted by UE1, queries the pre-configured mapping table of message types and forwarding behaviors, and learns that the traffic accident notification needs to be forwarded by the receiving node, and the forwarding node type is (including Vehicle / Infrastructure / Pedestrian in All nodes within); combined with th...

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Abstract

The present invention provides a broadcast information transmission method in 3GPP V2X communication. The method comprises: V2X broadcast business initiator sends control information in a control resource pool and sends data information in the data resource pool, wherein the control information carries dispatching information; and after the initiator sends the broadcast information, each relay node forwards the data broadcast information in the cooperative diversity mode and leads in the diversity gain for the system by using the random phase difference. The broadcast information transmission method in the 3GPP V2X communication realizes efficient, reliable and implement-easy business information broadcast flooding in the scene and requirement standard with high-density nodes, the low delay requirement and the information transmission reliability requirement.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a broadcast message transmission method in 3GPP V2X communication. Background technique [0002] With the rapid growth of vehicle ownership and density, as well as the frequent occurrence of road traffic accidents, the Internet of Vehicles has gradually become one of the hot topics in the communication field. Through the mutual communication between vehicles and traffic facilities, combined with technologies such as positioning systems, sensors, intelligent vehicle control systems, and machine vision analysis, the Internet of Vehicles can greatly improve the perception range and degree of automobile active safety systems and reduce the risk of traffic accidents. probability, and can indirectly achieve effects such as relieving traffic congestion and improving road carrying capacity. [0003] V2X is a communication technology dedicated to the field of vehicle network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W40/22H04W72/12
CPCH04W4/06H04W40/02H04W40/22H04W72/12Y02D30/70
Inventor 周淼孙鹏
Owner BEIJING XINWEI TELECOM TECH
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