結合SIP與Zeroconf在網路攝影機設置使用之研究

Abstract

本篇論文提出一種新穎的通訊協定，它可以使用最少的預先設定(Preconfiguration)負擔來遠端存取IP CAM。雖然一般的服務探索協定(Service Discovery Protocol)，像Zeroconf協定可以簡化Preconfiguration的過程，但這些通訊協定都被限制在區域內服務。本文所提出的通訊協定，命名為STDP(Service Trader Discovery Protocol)；它能夠提供遠端存取IP CAM的服務，同時只需要極小的Preconfiguration複雜度。STDP是一種混合Zeroconf和SIP(Session Initiation Protocol)的組合協定。在STDP當中，Zeroconf是用來探索(Discovery)或者/並且發佈(Publication)區域服務；而SIP協定則用來對遠端節點傳遞區域服務。藉由簡單的隨插即用(plug-and-play)，就可以遠端存取IP CAMs所提供的服務。此通訊協定是非常適合需要高移動性的應用，例如快速部署IP CAMs的需求。

This paper presents a novel protocol for remote access of IP CAM with minimum preconfiguration cost. Although the usual service discovery protocols such as Zeroconf can be adopted for simplifying the preconfiguration process, the protocols are limited only for local services. The proposed protocol, termed STDP (Service Trader Discovery Protocol), is able to provide remote IP CAM services while requiring minimum configuration complexity. The STDP is a hybrid combination of Zeroconf and SIP (Session Initiation Protocol). The Zeroconf is adopted for the discovery and/or publication of local services; whereas, the SIP is used for the delivery of local services to the remote nodes. With simple plug-and-play preconfiguration, services provided by IP CAMs are then remotely available. This protocol is well-suited for high mobility applications where the fast deployment of IP CAMs is desired.