基于Wi-Fi Direct即时通信应用的设计和实现
发布时间：2018-08-26 18:50
【摘要】：随着互联网技术和智能移动终端(特别是智能手机)的快速发展,人们越来越依赖移动通信网络,尤其是即时语音通信和视频传输。但是在有些场景下,用户可能无法连接到运营商的4G网络,比如在野外或者屏蔽信号的室内场景,这种情况下,对人们来说拥有一款能实现短距离的文字聊天、语音对讲或者视频传输的应用就显得很有必要。在这一背景下,本文设计并实现了基于Wi-Fi Direct的文字聊天、对讲机和实时视频传输的应用,旨在满足用户在没有网络覆盖及网络不稳定的场景下,依然能够通过Wi-Fi Direct技术实现近距离通信的愿望。本文的具体工作如下:首先,通过对Wi-Fi Direct技术和Wi-Fi Direct Service的介绍和分析,提出了在Android平台下基于Wi-Fi Direct的文字聊天、对讲机以及实时视频传输系统框架,以便解决在没有网络或者不通过网络基础设施接入服务器的情况下实现移动设备之间相互连接并随时随地进行即时通讯的问题。其次,在Wi-Fi Direct应用架构中,通过对整个架构的各层次中的功能模块进行设计与分析,实现了服务层的Wi-Fi Direct模块和应用服务平台ASP以及应用层的文字聊天功能,并给出了详细的实现过程和实现结果图。最后,在服务层的实现基础上,开发了对讲机和实时视频传输功能,并给出了详细的实现过程和实现结果图。
[Abstract]:With the rapid development of Internet technology and smart mobile terminals (especially smart phones), people are increasingly relying on mobile communication networks, especially instant voice and video transmission. But in some scenarios, users may not be able to connect to the operator's 4G network, such as in the wild or in an indoor scene where signals are shielded. Under this background, this paper designs and implements a text chat, walkie-talkie and real-time video transmission application based on Wi-Fi Direct, aiming at satisfying users'lack of network coverage and network instability. The specific work of this paper is as follows: Firstly, through the introduction and analysis of Wi-Fi Direct Technology and Wi-Fi Direct Service, a text chat, interphone and real-time video transmission system framework based on Wi-Fi Direct in Android platform is proposed. It solves the problem of connecting mobile devices and instant messaging anytime and anywhere without network or access to servers through network infrastructure. Secondly, in the Wi-Fi Direct application architecture, through the design and analysis of the functional modules in each layer of the whole architecture, the Wi-F of the service layer is realized. I Direct module and application service platform ASP as well as the text chat function of application layer are given, and the detailed implementation process and implementation result diagram are given. Finally, on the basis of the implementation of service layer, the function of intercom and real-time video transmission is developed, and the detailed implementation process and implementation result diagram are given.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52;TN92
本文编号：2205831
[Abstract]:With the rapid development of Internet technology and smart mobile terminals (especially smart phones), people are increasingly relying on mobile communication networks, especially instant voice and video transmission. But in some scenarios, users may not be able to connect to the operator's 4G network, such as in the wild or in an indoor scene where signals are shielded. Under this background, this paper designs and implements a text chat, walkie-talkie and real-time video transmission application based on Wi-Fi Direct, aiming at satisfying users'lack of network coverage and network instability. The specific work of this paper is as follows: Firstly, through the introduction and analysis of Wi-Fi Direct Technology and Wi-Fi Direct Service, a text chat, interphone and real-time video transmission system framework based on Wi-Fi Direct in Android platform is proposed. It solves the problem of connecting mobile devices and instant messaging anytime and anywhere without network or access to servers through network infrastructure. Secondly, in the Wi-Fi Direct application architecture, through the design and analysis of the functional modules in each layer of the whole architecture, the Wi-F of the service layer is realized. I Direct module and application service platform ASP as well as the text chat function of application layer are given, and the detailed implementation process and implementation result diagram are given. Finally, on the basis of the implementation of service layer, the function of intercom and real-time video transmission is developed, and the detailed implementation process and implementation result diagram are given.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52;TN92
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