A multi-hop transmission method and device

Abstract

An embodiment of the present invention provides a multi-hop transmission method and device, the method comprising: determining the role of the current terminal UE in the multi-hop network of the Internet of Vehicles; determining the role of the current UE's message in the multi-hop network of the Internet of Vehicles The multi-hop transmission range or the number of multi-hops; determine the transmission resources required to transmit the message; according to the role of the current UE and the transmission resources, transmit the message, the location of the current UE, and the multi-hop transmission range or The message and the number of multi-hops are transmitted to the neighboring UE adjacent to the current UE, and the transmission range of the message in the Internet of Vehicles is increased through the multi-hop transmission, so as to ensure that the surrounding UEs of the current UE can receive the messages sent by the current UE. information.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a multi-hop transmission method and device for a multi-hop network of the Internet of Vehicles. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution)-V2X (Vehicle-to-Everything, vehicle-to-everything) research, the UE1 (first terminal) message can be delivered to its surrounding UEs in one of the following two ways ( terminal): [0003] Mode 1, the base station broadcasts this message based on the location information reported by UE1; [0004] Mode 2: UE1 directly sends the message to surrounding UEs through the PC5 port. [0005] However, neither of these two methods can guarantee that the message is received by the surrounding UEs. [0006] For method 1: the base station broadcasts this message, but the problem is that the current UE may be at the edge of the cell, and the broadcast range of the base station is limited, resulting ...

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Problems solved by technology

[0005] However, neither of these two methods can guarantee that the message will be received by the surrounding UEs

[0006] For method 1: the base station broadcasts this message, but the problem is that the current UE may be at the edge of the cell, and the broadcast range of the base station is limited, resulting in that some UEs around the UE cannot receive the message, and then in the Internet of Vehicles The environment may cause a serious car accident

like figure 1 As shown, assuming that UE1 is the generator of the message, although UE2 (the second terminal) is near UE1, it is not within the broadcast range of the base station, so that UE2 cannot receive the message sent by UE1

[0007] For method 2: UE directly sends the message to surrounding UEs, but the transmission range of PC5 port is very limited, generally 50-300m

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