客户机无线上网据点接入技术

客户机无线上网据点接入技术

  • 客户机无线上网据点接入技术
    ART/013CP
    20070816 - 20080815
    8738

    赵盛章博士
    (1) Core technology modules for Client-based wireless Hotspot Access Technology platform As discussed in Section C, there are a number of technological challenges that have to be overcome in order for the WiFi access realization to meet the expectation of the market and the end users. To address these challenges, the following technology modules will be developed on top of a WiFi-enabled Voice over IP (VoIP) platform. There are three primary technology modules to be addressed in the project CHAT. i) Managed Access & Authentication Framework: This is an enhancement of the existing WiFi authentication schemes to address the access requirements of WiFi hotspots and to provide the managed logon and logoff functionality. ii) Power-optimized Keep-Alive Framework: This framework provides an optimized cross-layer integrated approach to handle all the keep-alive activities of the network stack in a power-efficient manner. iii) Inter-hotspot Session Management: This module enables SIP-based real-time applications to maintain session persistence across different subnets or domains. Furthermore, the existing WiFi phone forms the foundation of the CHAT project. There are certain core technology in the WiFi that requires further development to ensure the robustness, interoperability, protocol stack extensibility and commercial readiness. The relevant core components that require additional work include the SIP Stack, Configuration Management, and Man-Machine Interface (MMI). These components are further explained in the "CHAT Platform" in Section C. (2) WiFi-enabled portable platform prototype We will research and develop a WiFi-enabled hardware platform which is capable of executing all the core technology modules found in this project "CHAT". The hardware design primarily functions as a cost-effective embedded realization platform to illustrate the viability of all the essential CHAT modules and how they can be integrated with other communication system modules. The WiFi-enabled portable platform prototype will support the following key functional categories: • WLAN, • Networking, • Call features, • Audio processing, and • CHAT (3) Further exploration of other emergent challenges in WiFi hotspot access and related issues. As the number of WiFi hotspot grows, there will be a steadfast increase in both deployment coverage and density. New challenges will arise and in turn new opportunities will be uncovered.
    BellTech Co Ltd Boingo [赞助机构] Freescale [赞助机构] 权智掌上电脑有限公司

    本研究项目开发客户机无线上网据点接入技术,使备有无线保真技术(WiFi)的通讯设备不但可以接入无线上网据点,还可以在嵌入式系统的约束下维持无线网际网路服务。 无线保真技术是家中及企业中的主要无线接入技术。在公共场所,无线网际网路服务通常由无线上网据点业者或整合业者提供。无线上网据点的使用率正持续激增。不只上网据点的数量增加,覆盖的区域也愈来愈多。比起在家中及企业中使用无线上网,透过公共无线上网据点上网对无线携带型装置来说在技术上更具挑战性。此项目旨在解决耗电量,运算及典型嵌入式平台记忆限制所引起的问题。需要处理的包括无线网际网路服务的发现,枚举和选拔功能;无线网际网路接入和认證;无线网际网路的维持,令其接入服务容易获得及确保其可接近性;还有容许一些可以增加服务使用率及使用方法的功能。 无线保真技术成了所有单模(无线保真),双模(蜂窝+无线保真),及叁模(无线保真+蜂窝+移动电视)移动装置必备的无线接入技术。我们的技术平臺以嵌入式平台的软体和韧体为主。为了更轻易地融入各种支援无线保真技术的多模流动装置,技术平臺的设计及执行会循著便携的方向进行。