For massive data communication, the wireless network is often needed to support data transmission in complex environment. In this case, a portable, inexpensive and efficient wireless device is especially helpful. In order to realize this function, we propose a wireless self-organized connection strategy in this paper. We focus on a multihop wireless network with single relay at each hop. One of the challenges over this system is to set up the communication link optimally and automatically, which is also the main contribution of this paper. So we designed an On-Demand Cross-Layer Connection Strategy (ODCLCS) based on WLAN to achieve the data transmission between source and destination point. This strategy crosses application layer, transport layer, network layer and MAC layer. By using active scanning in MAC layer, proper nodes can be found and connected. The automatic routing method can get benefit from active scanning message, automatically allocate IP address for each node. At last, we develop a link maintenance function which works after the link is established. The link maintenance function using heartbeats communication mechanism to find link errors. Moreover, the link maintenance message is very short which can be neglected compared with the data stream. The ODCLCS is designed for Wireless Self-organized Link (WSOL) system. WSOL system aims to establish a stable and user-friendly communication link by using ODCLCS and other necessary programs. All programs are properly written and debugged repeatedly by us, which can work well on testbed devices. Performance evaluation using NS-3 simulator shows the characteristic of WSOL. The WSOL program for testbed is based on cfg80211 and mac80211 in Linux Kernel. And some API based on libnl library is invoked. The testing data provided verify the good performance of ODCLCS in reality.

中文翻译：

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一种基于WLAN的无线自组织链路按需实现的跨层连接策略

对于海量数据通信，通常需要无线网络来支持复杂环境中的数据传输。在这种情况下，便携式，廉价和高效的无线设备特别有用。为了实现这一功能，本文提出了一种无线自组织连接策略。我们专注于在每一跳具有单个中继的多跳无线网络。该系统的挑战之一是优化和自动地建立通信链接，这也是本文的主要贡献。因此，我们设计了一种基于WLAN的按需跨层连接策略（ODCLCS），以实现源与目的点之间的数据传输。该策略跨应用层，传输层，网络层和MAC层。通过在MAC层中使用主动扫描，可以找到并连接适当的节点。自动路由方法可以从活动的扫描消息中受益，为每个节点自动分配IP地址。最后，我们开发了一个链接维护功能，该功能在链接建立后即可使用。链接维护功能使用心跳通信机制来查找链接错误。此外，链接维护消息非常短，与数据流相比可以忽略不计。ODCLCS专为无线自组织链接（WSOL）系统而设计。WSOL系统旨在通过使用ODCLCS和其他必要程序来建立稳定且用户友好的通信链接。我们已正确编写并调试了所有程序，这些程序可以在测试平台上正常运行。使用NS-3仿真器的性能评估显示了WSOL的​​特性。用于测试平台的WSOL程序基于Linux内核中的cfg80211和mac80211。并调用了一些基于libnl库的API。提供的测试数据证明了ODCLCS的良好性能。