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Wireless grids are wireless computer networks consisting of different types of electronic devices with the ability to share their resources with any other device in the network in an ad hoc manner. A definition of the wireless grid can be given as: "Ad hoc, distributed resource-sharing networks between heterogeneous wireless devices" The following key characteristics further clarify this concept: *No centralized control *Small, low powered devices *Heterogeneous applications and interfaces *New types of resources like cameras, GPS trackers and sensors *Dynamic and unstable users / resources The technologies that make up the wireless grid can be divided into two main categories; ad hoc networking and grid computing. ==(Wireless) Ad hoc networking== In traditional networks, both wired and wireless, the connected devices, or nodes, depend on dedicated devices (edge devices) such as routers and/or servers for facilitating the throughput of information from one node to the other. These 'routing nodes' have the ability to determine where information is coming from and where it is supposed to go. They give out names and addresses (IP addresses) to each connected node and regulate the traffic between them. In wireless grids, such dedicated routing devices are not (always) available and the bandwidth that is permanently available to traditional networks has to be either 'borrowed' from an already existing network or publicly accessible bandwidth (open spectrum) has to be used. A group addressing this problem is MANET (Mobile Ad Hoc Network). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Wireless grid」の詳細全文を読む スポンサード リンク
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