遠隔医療のためのアプリケーションレベルのネットワークQoS制御システム

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Telemedicine is a medical activity that shares medical environments between different facilities. In order to share these environments, it is required that all forms of medical information are exchanged via networks. However, the transmission of information across the network can become obstructed or delayed if the bandwidth available is insufficient. Consequently, lost or damaged information could lead to problems in providing proper medical diagnosis and/or treatment. Among the information and communication technologies being researched, a quality of service (QoS) control technique has been developed and applied for practical use. The practical QoS control technique mainly controls network traffic in the transport layer of a seven-layer open systems interconnection (OSI) model. However, a higher level of intelligent control is required for the QoS of information in telemedicine. When a bandwidth is reduced, information must be efficiently reduced to understandable units simultaneously for each application. Additionally, the relative importance of information data changes as the medical procedure progresses. Therefore, transmission control must dynamically reflect the relative importance. In this paper, the authors propose the introduction of an application-level QoS control technique that controls the quality of service at the application layer of an OSI service layer model. Utilizing the aforementioned method, information can be transmitted through groups of frames (GoF)-groups of information divided into understandable units. Additionally, this paper proposes assigning priorities to each packet of communication data and each channel. In so doing, the proposed method can produce a wider bandwidth for important information sources and sufficient QoS for other information sources.
社団法人日本生体医工学会の論文
2004-12-10

遠隔医療のためのアプリケーションレベルのネットワークQoS制御システム

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