D2D data package transmission method and apparatus, transmitted resource allocation methods and apparatuses

Abstract

Embodiments of the invention provide a D2D data package transmission method and apparatus, transmitted resource allocation methods and apparatuses. The method comprises the steps of setting a plurality of data package copies of a D2D data package; determining transmitting frequency of each data package copy, wherein transmission frequencies of all data package copies are different; and transmitting each data package copy at corresponding transmission frequency. According to the D2D data package transmission method, small data transmission time delay can be realized, so that a good time delay control purpose can be achieved.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a D2D data packet transmission method, transmission resource allocation method and device. Background technique [0002] The fifth-generation mobile communication technology (5G) is the next important stage of civilian mobile communication technology. Various countries and technical organizations around the world have carried out a lot of research; as a key candidate technology for 5G, D2D (Device-to-Device) To-device communication) has the potential to improve system performance, enhance user experience, and expand cellular communication applications, so it has received widespread attention. [0003] The Internet of Vehicles is a main application scenario of D2D. In the application scenario of D2D Internet of Vehicles, the PC5 interface is used for communication between the vehicle (V-UE) and the roadside unit (RSU) and between the V-UE. The PC5 interface is defined by 3...

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Problems solved by technology

[0004] figure 1 A schematic diagram showing the current D2D data packet retransmission method, as shown in figure 1 As shown, since the D2D technology in the public security scenario does not require high reliability and low latency, the current protocol defines a multi-transmission mechanism that only requires the sender to periodically resend the D2D data multiple times (such as 4 times), through the repeated receiving technology at the receiving end, the probability of successful decoding of data packets is gradually increased; however, in the Internet of Vehicles scenario, especially in the V2V scenario, the delay control requirements are relatively high. Currently, the data is repeatedly sent in the time domain. The way to realize D2D data packet transmission will inevitably bring a large delay, which cannot meet the delay control requirements in the Internet of Vehicles scenario

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