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Communication device

A technology of communication frame and data processing equipment, applied in wireless communication, vehicle wireless communication service, network traffic/resource management, etc., can solve the problems of data processing delay and complex processing, etc.

Pending Publication Date: 2020-10-20
RENESAS ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the software of the communication device performs exception handling for all unexpected data transfers, the processing becomes very complicated and there is a possibility of delays in data processing

Method used

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Embodiment Construction

[0029] Hereinafter, each embodiment will be described in detail with reference to the accompanying drawings. The same or corresponding parts are denoted by the same reference numerals, and descriptions thereof will not be repeated.

[0030] figure 1 is a diagram showing a configuration example of an in-vehicle network. The in-vehicle network is configured by connecting a plurality of communication devices 101 to each other. Various devices such as cameras, radars, LiDAR (Light Detection and Ranging), chassis, and powertrains are connected to each communication device 101, and each communication device 101 processes frames received from these devices. The communication device 101 is connected to an external network and can cooperate with cloud services. Since the communication device 101 needs to process and transmit various data without delay, the communication device 101 includes a plurality of CPUs and memories. The communication device 101 also includes a memory contro...

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PUM

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Abstract

The application relates to a communication device. Techniques for detecting a loss of a received frame are provided. The communication apparatus 101 includes a receiving unit 813 for receiving a frameincluding a plurality of data, a first memory 806 for temporarily storing a plurality of data, a second memory 811 for storing a transfer rule of each data, a plurality of third memories 809 to whicheach data is allocated, a processor 810 associated with each third memory 809, and a memory control unit 805 for controlling transfer of each data. The memory control unit 805 outputs an error when the first data is not the last data of the frame or the size of the first data is larger than the size defined by the second data in the case where the second data includes the last data flag.

Description

[0001] Cross References to Related Applications [0002] The entire disclosure of Japanese Patent Application No. 2019-072624 filed on April 5, 2019, including specification, drawings and abstract, is hereby incorporated by reference. technical field [0003] The present disclosure relates to a communication device, and may be suitable for use in, for example, a communication device of an in-vehicle network. Background technique [0004] In recent years, automotive autonomous driving technology has been extensively researched and developed. In order for a car to drive autonomously, it is necessary to process a large number of frames acquired by various sensors and cameras attached to the car (hereinafter, data sent and received on the network is referred to as "frame") without delay, and to control the entire car. [0005] With the automatic operation of the car, a large number of devices are connected to the in-vehicle network, the frames processed by the communication de...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0045H04L1/0061H04L1/004H04L1/0052H04L1/0083H04L1/0078G06F13/4282H04W4/40H04L43/0847H04W28/04H04W28/06
Inventor 泷常雄一
Owner RENESAS ELECTRONICS CORP