The wide diffusion of mobile devices that natively support ad hoc communication technologies has led to several protocols for enabling and optimizing Mobile Ad Hoc Networks (MANETs). Nevertheless, the actual utilizati...The wide diffusion of mobile devices that natively support ad hoc communication technologies has led to several protocols for enabling and optimizing Mobile Ad Hoc Networks (MANETs). Nevertheless, the actual utilization of MANETs in real life seems limited due to the lack of protocols for the automatic creation and evolution of ad hoc networks. Recently, a novel P2P protocol named Wi-Fi Direct has been proposed and standardized by the Wi-Fi Alliance to facilitate nearby devices’ interconnection. Wi-Fi Direct provides high-performance direct communication among devices, includes different energy management mechanisms, and is now available in most Android mobile devices. However, the current implementation of Wi-Fi Direct on Android has several limitations, making the Wi-Fi Direct network only be a one-hop ad-hoc network. This paper aims to develop a new framework for multi-hop ad hoc networking using Wi-Fi Direct in Android smart devices. The framework includes a connection establishment protocol and a group management protocol. Simulations validate the proposed framework on the OMNeT++ simulator. We analyzed the framework by varying transmission range, number of hops, and buffer size. The results indicate that the framework provides an eventual 100% packet delivery for different transmission ranges and hop count values. The buffer size has enough space for all packets. However, as buffer size decreases, the packet delivery decreases proportionally.展开更多
为实现Android平台上的双网双待功能,研究Android平台的系统架构以及Android fram ework层上已经实现的双卡处理机制。提出一种在无线接口层(R IL)上依样建立一套新的RILD river处理机制,从而将双卡分别进行处理的方法。实现基于An-droi...为实现Android平台上的双网双待功能,研究Android平台的系统架构以及Android fram ework层上已经实现的双卡处理机制。提出一种在无线接口层(R IL)上依样建立一套新的RILD river处理机制,从而将双卡分别进行处理的方法。实现基于An-droid系统平台的GSM和CDMA双网双待机制,对Android系统平台和主要的Phone应用模块进行了详细的分析。结果表明,在An-droid系统原有架构基础上进行双网双待设计,具有简单、易扩展的优点,且更好地满足广大Android手机用户的需求。展开更多
文摘The wide diffusion of mobile devices that natively support ad hoc communication technologies has led to several protocols for enabling and optimizing Mobile Ad Hoc Networks (MANETs). Nevertheless, the actual utilization of MANETs in real life seems limited due to the lack of protocols for the automatic creation and evolution of ad hoc networks. Recently, a novel P2P protocol named Wi-Fi Direct has been proposed and standardized by the Wi-Fi Alliance to facilitate nearby devices’ interconnection. Wi-Fi Direct provides high-performance direct communication among devices, includes different energy management mechanisms, and is now available in most Android mobile devices. However, the current implementation of Wi-Fi Direct on Android has several limitations, making the Wi-Fi Direct network only be a one-hop ad-hoc network. This paper aims to develop a new framework for multi-hop ad hoc networking using Wi-Fi Direct in Android smart devices. The framework includes a connection establishment protocol and a group management protocol. Simulations validate the proposed framework on the OMNeT++ simulator. We analyzed the framework by varying transmission range, number of hops, and buffer size. The results indicate that the framework provides an eventual 100% packet delivery for different transmission ranges and hop count values. The buffer size has enough space for all packets. However, as buffer size decreases, the packet delivery decreases proportionally.
文摘为实现Android平台上的双网双待功能,研究Android平台的系统架构以及Android fram ework层上已经实现的双卡处理机制。提出一种在无线接口层(R IL)上依样建立一套新的RILD river处理机制,从而将双卡分别进行处理的方法。实现基于An-droid系统平台的GSM和CDMA双网双待机制,对Android系统平台和主要的Phone应用模块进行了详细的分析。结果表明,在An-droid系统原有架构基础上进行双网双待设计,具有简单、易扩展的优点,且更好地满足广大Android手机用户的需求。
