电子技术论坛_中国专业的电子工程师学习交流社区-中电网技术论坛

标题: zigbee 协议中 Request 和 Indication 区别在那里？ [打印本页]

作者: lijin_as 时间: 2005-7-23 11:19 标题: zigbee 协议中 Request 和 Indication 区别在那里？

在Zigbee协议中，Request 原语和Indication原语似乎都可以用来发出请求，到底他们的含义区别在那里？使用场合有什么不同？

作者: seuafu2005 时间: 2005-7-25 09:37

Request是由上一层给下一层的请求。Indication是由下一层通知上一层有请求或者事件传送过来。

作者: lijin_as 时间: 2005-9-20 09:04

谢谢

作者: turquoisemelon 时间: 2005-9-21 11:36 标题: ZigBee里原话

• Request – This type of primitive is invoked by a higher lower to the layer below and represents a service request at the service access point.
• Confirm – This type of primitive is supplied in response to a previous Request, from the lower layer to the higher layer, and provides the status of the completed service request.
• Indication – This type of primitive is supplied by a lower layer to the higher layer and is an asynchronous notification of receipt of an incoming request from a remote device.
• Response – This type of primitive is supplied by a higher layer to the lower layer and supplies the status of a previous Indication for transmittal to a remote device.
[em27]

欢迎光临电子技术论坛_中国专业的电子工程师学习交流社区-中电网技术论坛 (http://bbs.eccn.com/)