标准摘要
[中文适用范围]： 本文件规定了一种专为基于LIN的车辆网络系统在本地互连网络中应用而设计的传输协议和网络层服务。该协议定义了一种无需确认的通信方式。LIN协议支持ISO 14229-2中规定的标准化服务原语接口。本文件提供了传输协议和网络层服务，以支持不同的应用层实现，例如：— 正常通信消息，和— 诊断通信消息。传输层定义了如何传输包含在一个或多个帧中的数据。传输层消息通过诊断帧进行传输。为传输层规定了一个标准化的API。使用传输层的目标是针对在主干总线（如CAN）上执行诊断，并且系统构建者希望在LIN子总线集群中使用相同诊断功能的系统。实际上，这些消息与ISO 15765-2中的消息完全相同，且承载这些消息的PDUs也非常相似。传输层的目标包括：— 减轻指挥节点的负载，— 在响应节点上直接提供完整的（或其子集）诊断功能，以及— 针对由功能强大的LIN节点构建的集群（而非主流低成本节点）。 [外文原描述]： This document specifies a transport protocol and network layer services tailored to meet the requirements of LIN‑based vehicle network systems on local interconnect networks. The protocol specifies an unconfirmed communication. The LIN protocol supports the standardized service primitive interface as specified in ISO 14229-2. This document provides the transport protocol and network layer services to support different application layer implementations such as: — normal communication messages, and — diagnostic communication messages. The transport layer defines transportation of data that is contained in one or more frames. The transport layer messages are transported by diagnostic frames. A standardized API is specified for the transport layer. Use of the transport layer is targeting systems where diagnostics are performed on the backbone bus (e.g. CAN) and where the system builder wants to use the same diagnostic capabilities on the LIN sub-bus clusters. The messages are in fact identical to ones in ISO 15765-2 and the PDUs carrying the messages are very similar. The goals of the transport layer are: — to have low load on commander node, — to provide full (or a subset thereof) diagnostics directly on the responder nodes, and — to target clusters built with powerful LIN nodes (not the mainstream low cost).
英文名称Road vehicles — Local Interconnect Network (LIN) — Part 2: Transport protocol and network layer services