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The advantage of using wireless data transmission module... Data transmission can be simply divided into two major types: wired (including the installation of optical cables, cables or leased telecommunication lines) and wireless (including the establishment of dedicated wireless data transmission system or the borrowing of CDPD, GSM, CDMA and other public network information platforms).     In...

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Industrial-grade 4G router TCP/IP network architecture 1. Layering of TCP/IP network system   TCP/IP (TransmissionControlProtocol/InternetProtocol), transmission control protocol/Internet protocol. It was developed by the defense advanced research projects agency in the 1970s, and was later integrated into UNIX and popularized. It emerged in the 1980s as the Internet's...

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The structure of 4G DTU The main function of DTU is to transmit data from remote devices back to the background center via wired/wireless. Different data transmission modes of DTU include all-network-connected DTU, GPRS DTU, WIFI DTU, CAN DTU and 4G DTU. Today, we will have a look at the structure and work flow of DTU.   To complete...

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What are the wireless connection technologies of the... Internet of things (iot) applications have been deeply rooted in our lives. The E-Lins H685 industrial-grade router is a small industrial-grade wireless router with single or double LAN ports. TDD/ fdd-lte, 4G, 3G, GPRS network optional. Besides, what are the wireless connectivity technologies for the Internet of things?   1....

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The use of industrial wireless routers Industrial-grade wireless router adopts high performance 32-bit industrial-grade ARM9 communication processor, which is widely used in finance, electric power, postal, water conservancy, environmental protection, meteorology and other industries.   Industrial router is mainly used in intelligent transportation,...

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利用工业LTE路由器软状态动态适应网络变化

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  工业路由器:为了适应多点对多点应用中经常出现的组成员变化的情况,以及网络中工业LTE路由器的动态改变,RSVP在交换节点(路由器)上保留了名为软状态的信息表,并将维持预留的责任放到了终端用户处。

  RSVP一共定义了两种需保留的交换节点上的状态信息:路由器状态和预留状态。路由状态由数据源负责发送路由消息以建立和定期(这样可以避免承载预留或路由消息的IP包丢失所造成的问题)更新,而接收者则负责发送预留消息来建立或定期更新预留状态。

  路由器消息是利用网络现有的路由协议(如RIP,OSPF等等)进行转发的。每个路由消息内都包括会话标识,该路由消息上次经过的工业路由器的地址(用于上行预留消息寻路),以及一个由数据源给出的发送者模版(包括源IP地址,数据流属性等)等信息。预留消息包括定义所期望的QoS的流描述,预留类型(WF,FF和SE)和包过滤器(用于鉴别数据包是否属于某个会话)。当工业TD-LTE路由器收到路由消息或预留消息后,它将根据消息中的信息建立或更新相对应的软状态,内容包括:1.各个会话需预留资源的数据;2.辨别数据包是否属于某个会话的过滤器描述;3.每个会话的预留类型;4.上行路由信息;5.数据源描述等。

  路由消息和预留消息都有生存时限,当其超时后其相应的状态将被路由器自动删除。当然发送者和接收者在必要情况(比如会话结束)下,也可以发送删除消息给沿途的工业WCDMA路由器以请求删除相应的软状态。

  标签:无线路由器       4g路由器

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