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Method and device for message transmission

A message transmission and message message technology, applied in the field of communications, can solve the problems of increasing transmission resource blocks, increasing transmission subframes, and failing to meet system requirements, so as to reduce message length and improve system performance.

Inactive Publication Date: 2017-11-17
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this relative speed, the use of the current 4 vertical symbol-type demodulation signal parameters (DeModulation Reference Signal, DMRS) will result in a high packet error rate of various business messages, which cannot meet the system design requirements, so additional Introduce enhanced schemes such as reducing Modulation and Coding Scheme (MCS), increasing transmission resource blocks (Resource Block, RB), and increasing transmission subframes
[0004] For different types of V2X service messages, the scope of application of the enhancement scheme is limited. For some service messages with large message lengths, such as 800byte event-triggered message messages, set the transmission RB to the full bandwidth and use this frequency The minimum MCS allowed under the number of domain resources still cannot meet the system performance requirements, so it is necessary to design an adaptive multi-transmission subframe transmission scheme for long message packets at high moving speeds, but there is no such scheme in the existing V2X system

Method used

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  • Method and device for message transmission
  • Method and device for message transmission
  • Method and device for message transmission

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Experimental program
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Embodiment 1

[0020] figure 1 It is a flow chart of a message transmission method provided by Embodiment 1 of the present invention. This embodiment is applicable to data communication between vehicles and base stations, between vehicles and vehicles, and between vehicles and user equipment. This method can be provided by the embodiment of the present invention The message transmission device may be implemented by means of software or hardware, and the device may be integrated in a sending node, which may specifically be, but not limited to, a vehicle, a base station, and a user equipment. Such as figure 1 shown, including:

[0021] S101. When it is determined that the preset condition is met, perform segmentation processing on the sent message packet to obtain multiple transmission packets.

[0022] Wherein, the preset condition includes but not limited to at least one of the following: node speed threshold, preset node scenario type, preset service type, preset service requirement, pres...

Embodiment 2

[0075] figure 2 It is a flow chart of a message transmission method provided by Embodiment 2 of the present invention. On the basis of the above embodiments, this embodiment will perform segmentation processing on the message when the preset condition is met, and optimize it as When the message length of the message message exceeds the preset length, the message message is segmented. Such as figure 2 shown, including:

[0076] S201. When the message length of the message message exceeds a preset length, perform segmentation processing on the message message to obtain multiple transmission messages.

[0077] Wherein, the preset length is an adaptive length or a pre-defined fixed length. The adaptive length can be determined according to at least one of the following preset conditions: node speed threshold, preset node scenario type, preset service type, preset service demand, preset resource pool busyness threshold, and preset interference intensity threshold .

[0078] ...

Embodiment 3

[0083] image 3 It is a flow chart of a message transmission method provided by Embodiment 3 of the present invention. On the basis of the above embodiments, this embodiment will use multiple transmission subframes to transmit multiple transmission messages, and optimize it according to the message The resource information corresponding to the message schedules corresponding resources for each transmission subframe, and the resource information includes at least one of the following: configured fixed segmentation length, message message length, adaptive length, node speed, node scene type , service type, service demand, resource pool busyness, interference intensity, modulation and coding method MCS used in the physical layer, number of transmission subframes, number of frequency domain resources in each transmission subframe, and the weight of each transmission message The number of transmissions is transmitted, and multiple transmission subframes are used to transmit multipl...

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Abstract

The invention discloses a method and device for message transmission. The method includes: dividing, when a preset condition is satisfied, a transmitted message into a plurality of transmission messages; transmitting the plurality of transmission messages by using multiple transmission subframe. The method and device reduces a message length in a single transmission subframe so as to enable lower MCS and improve system performance.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a message transmission method and device. Background technique [0002] 3GPP V2X technology is a key technology for future intelligent transportation systems. It enables communication between vehicles, vehicles and base stations, and base stations. In order to obtain a series of traffic information such as real-time road conditions, road information, and pedestrian information, so as to improve driving safety, reduce congestion, improve traffic efficiency, and provide in-vehicle entertainment information. [0003] The scene parameters that V2X technology needs to support vary greatly, and the relative speed of the vehicle needs to support up to 500km / h. At this relative speed, the use of the current 4 vertical symbol-type demodulation signal parameters (DeModulation Reference Signal, DMRS) will result in a high packet error rate of various bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/14H04W28/06H04W72/04H04W72/12
CPCH04W4/14H04W28/06H04W72/0446H04W72/569
Inventor 周淼王夏男孙鹏
Owner BEIJING XINWEI TELECOM TECH