Wireless vehicle communication method utilizing wired backbone

Abstract

A method for providing electronic communications between nodes of a vehicle includes electronically connecting a plurality of gateway nodes to one another via a wired backbone. A first and second of the gateway nodes are electronically connected to the wired backbone. A plurality of sub-network nodes are wirelessly communicatively coupled to each of the plurality of gateway nodes. A plurality of first sub-network nodes are wirelessly communicatively coupled to the first gateway node. A plurality of second sub-network nodes are wirelessly communicatively coupled to the second gateway node. A message is transmitted from a selected first sub-network node to a selected second sub-network node by using a data routing technique. The data routing technique includes the selected first sub-network node wirelessly transmitting the message to the first gateway node. The first gateway node receives the message and, in response thereto, the first gateway node broadcasts the message on the wired backbone. The second gateway node receives the message on the wired backbone and, in response thereto, the second gateway node wirelessly transmits the message to the selected second sub-network node.

Description

technical field [0001] The present invention relates to methods for wireless communication, and more particularly, to methods of wireless communication within a vehicle with enhanced performance and reliability. Background technique [0002] It is known to employ wireless communication between and within systems in a vehicle, such as an automobile. However, it is difficult to realize reliable wireless communication with good performance in the vehicle because fading due to multipath, people, and metal obstacles inside the vehicle seriously affects the wireless communication. Therefore, researchers have proposed utilizing multi-hop communication to communicate between wireless gateway / node pairs separated by a distance of a few meters or less. However, a multi-hop system with a poor design would only result in greater latency due to bottleneck relay nodes and unreliable individual links. [0003] The technical level of automotive electronics is developing rapidly, and it is...

AI Technical Summary

Problems solved by technology

However, multi-hop solutions have multiple possible problems if not designed properly

First, in many cases even multi-hop solutions cannot provide the required level of reliability when a single single-hop link is bad

Second, in the total data communication, multi-hop solutions lead to longer delays

Third, intermediate relay nodes can easily become a bottleneck in the network

Fourth, the wireless channel is more occupied by wireless transmission and cannot be used for simultaneous transmission

[0006] On the other hand, power control has its own disadvantages since power cannot be increased indefinitely to increase the probability of a successful transmission

There is an upper limit to the transmit power level

In addition, if the node is battery-operated, the higher the transmission power, the higher the energy consumption, which will seriously affect the node lifetime

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