Multi-hop transmission methods and devices

Abstract

The embodiment of the invention provides multi-hop transmission methods and devices. The method includes: determining a role of a current terminal UE in a multi-hop internet of vehicles; determining amulti-hop transmission range or multi-hop frequency of a message of the current UE in the multi-hop internet of the vehicles; determining transmission resources required for transmitting the message;and transmitting the message, a location of the current UE and the multi-hop transmission range or the message and the multi-hop frequency to neighboring UE, which is adjacent to the current UE, according to the role of the current UE and the transmission resources. The transmission range of the message in the internet of the vehicles is enlarged through multi-hop transmission, and effect that surrounding UE of the current UE can receive the message issued by the current UE is ensured.

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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