Electronic device and message transmission method for v2x system

A message transmission method, suitable for a device of a V2X system, wherein the message transmission method comprises:

• receiving a first collective perception message from another device of the V2X system by a wireless transceiver of the device;
• and
• determining whether to perform a relay transfer of the first collective perception message by a processor of the device, comprising:
• determining whether to generate a second collective perception message according to the first collective perception message according to a first angle of the device and a second angle of another device of the first collective perception message;
• and
• after generating the second collective perception message, sending the second collective perception message to a plurality of surrounding devices surrounding the device by the wireless transceiver of the device.

An electronic device, suitable for a V2X system, wherein the electronic device comprises:

• a wireless transceiver, configured to receive a collective perception message from another device of the V2X system;
• and
• a processor, coupled to the wireless transceiver, configured to perform the following operations:
• calculating an absolute difference angle according to a first angle of the electronic device and a second angle of another device in the collective perception message;
• and
• not relay transferring the collective perception message to a plurality of surrounding devices surrounding the electronic device when the absolute difference angle is greater than or equal to a threshold value.