The paper begins with explaining the national telecommunication network is composed of backbone network and access network, and there are wired access network and wireless access network.

本文先说明国家通信网有骨干网和接入网，而接入网有有线接入网和无线接入网。

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Google also plans to launch powerful Wi-Fi networks in those markets that piggyback on its wired network, allowing anyone to use their mobile device to access the Web while they are in public spaces, said people familiar with the matter.

WSJ: Google to Fund, Develop Wireless Networks in Emerging Markets

It can be used either as a wireless router to create an 802.11n Wi-Fi network anywhere one is needed, or as an access point (AP) to add Wi-Fi to an existing wired network.

ENGADGET: D-Link announces Touch and Pocket 802.11n routers, Rush wireless accelerator