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A method, device, and communication system for data transceiving and relaying

A data sending method and business data technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve problems such as congestion and low reliability

Active Publication Date: 2020-04-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The shortcomings of the existing technology are: in the existing vehicle-to-vehicle communication of the Internet of Vehicles, the "application data" of the vehicle is transmitted by broadcasting on the air interface, so the reliability is low; in addition, in order to expand the communication distance of the vehicle The multi-hop direct forwarding method of "application data" is not only low in reliability, but also may cause D2D Link (D2D link; D2D: Device-to-Device, device to equipment) congestion

Method used

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  • A method, device, and communication system for data transceiving and relaying
  • A method, device, and communication system for data transceiving and relaying
  • A method, device, and communication system for data transceiving and relaying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0173] This embodiment mainly describes the transmission and processing process of the temporary identification and service data between terminals on the D2D Link.

[0174] Figure 8 It is a schematic diagram of the implementation flow for the transmission and processing of temporary identification and business data on D2D Link, as shown in the figure, which mainly includes the following steps:

[0175] Step 801: The source sending terminal sends the temporary identification information (assigned by the local service function entity) through the D2D Link. In addition to the temporary identification information itself, it can also carry "hop count information", which is used for the relay terminal to judge Whether to forward the temporary identifier transmission message.

[0176] The information content and message size carried during the transmission of temporary identification information are fixed, and the length of the message is extremely small. The transmission process o...

Embodiment 2

[0187] This embodiment mainly describes the process that the receiving terminal sends terminal service data through the cellular network query source in a point-to-point manner.

[0188] Figure 9 A schematic diagram of the implementation process for querying the business data sent by the source sending terminal, as shown in the figure, mainly includes the following steps:

[0189] Step 900: If the receiving terminal only successfully receives the temporary identification information on the air interface D2D Link, but fails to successfully receive the corresponding service data, the receiving terminal can trigger the query process for the service data of the source sending terminal .

[0190] Step 901: The receiving terminal determines the target local server functional entity according to the local server functional entity identification part of the temporary identification item in the temporary identification information band.

[0191] Step 902: The receiving terminal send...

Embodiment 3

[0197] This embodiment mainly describes the process of the terminal registering with the local server functional entity through the cellular network.

[0198] In this example, when the terminal is turned on or moves to a new geographical area, the terminal will trigger a registration process with the local server functional entity. During the registration process, the target local server functional entity assigns a temporary identifier (or an association identifier) ​​to the terminal. ), and establish a context for the terminal. There may be one or more local server functional entities in a specific geographical area. When the base station is connected to multiple local server functional entities, the base station may select a local server functional entity for the terminal according to the instruction information of the terminal or the load information of the local server functional entities.

[0199] Figure 10 It is a schematic diagram of the implementation process for the...

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PUM

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Abstract

The invention discloses a data sending and receiving, relaying method, device and communication system, comprising: when sending data, sending temporary identification information and business data respectively on a D2D Link (device to device link), and uploading business data to a network side device data. During data relay, the temporary identification information is forwarded on the D2D Link, and the business data is forwarded according to the load of the D2D Link. When receiving data, receive service data from the D2D Link according to the temporary identification information, or request the network-side device to deliver service data. The network side receives the service data uploaded by each terminal, and stores the service data uploaded by each terminal according to the temporary identification assigned to each terminal; sends the service data to the requesting terminal according to the temporary identification. The present invention ensures that services with extremely high delay requirements can be correctly received with a very short delay, and at the same time, the problem of excessive load of the D2D Link under the multi-hop condition will not be caused.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, device and communication system for data sending and receiving and relaying. Background technique [0002] In the existing vehicle-to-vehicle communication of the Internet of Vehicles, the "application data" between vehicles is transmitted by broadcasting on the air interface. way of forwarding. figure 1 It is a schematic diagram of the existing vehicle-to-vehicle communication scheme of the Internet of Vehicles. As shown in the figure, the vehicle at the source sending terminal transmits the "application data" to the vehicles within one hop through the air interface, and the vehicles within one hop transmit the "application data" through the air interface. "Transmit to vehicles within two hops, and so on. [0003] The shortcomings of the existing technology are: in the existing vehicle-to-vehicle communication of the Internet of Vehicles, the "...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/08
CPCH04W40/22H04W64/00
Inventor 焦斌
Owner DATANG MOBILE COMM EQUIP CO LTD
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