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METHOD FOR SWITCHING BETWEEN WIRED AND WIRELESS NETWORK DURING PATIENT MONITORING

IP.com Disclosure Number: IPCOM000191450D
Publication Date: 2010-Jan-05
Document File: 5 page(s) / 35K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention provides a method for switching between wired and wireless network interface of a bridge for a patient monitoring system. The method requires a single stack to be maintained for wired and wireless network interfaces. Further, the method disclosed herein provides a continuous network connection to the system by overwriting the wireless LAN card MAC address with MAC of wired network interface, thereby resolving ARP-request response to avoid disconnection of the network. The method provides a work flow that is used for switching the wired network interface and wireless network interface in such a way so as to prioritize the wired network interface over the wireless network interface. Such a property of the method eliminates the need of priority setting tools. Moreover, the bridge may have only one active network interface at a time and if none of the interface is active, the bridge will be empty till any of the interfaces gets active.

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METHOD FOR SWITCHING BETWEEN WIRED AND WIRELESS NETWORK DURING PATIENT MONITORING

FIELD OF INVENTION

The invention generally relates to patient monitoring systems and more particularly to a method for switching between wired and wireless networks by the patient monitoring system.

BACKGROUND OF THE INVENTION

In patient monitoring systems, patient monitors are used for communicating mission critical data that facilitates remote viewing of patient reports. Generally, such communication of the data is over a combination of multiple wired and wireless networks. As such, the patient monitoring system use multiple network interfaces bridged together to provide a single network. In bridged networks for patient monitoring system, patient monitoring application defines an interface that is utilized while initializing to establish the network. Further, the patent monitoring application may switch over to other network interface dynamically. In such a case, an active interface name is defined and the patient monitoring application is restarted while switching to the other network interface. However, restarting of the patient monitoring application leads to a complete restart of the network and hence results in loss of the network connectivity till the patient monitoring application starts up again. Moreover, such a situation is undesirable as it disrupts local monitoring. Further, restarting of the patient monitoring application disconnects remote viewing. Therefore, a technique is desired that facilitates continuous network connectivity to the patent monitoring application in a bridged multiple network interface environment.

Conventionally, various techniques have been developed for handling switching between wired and wireless interface in a bridged network. However, existing switching techniques are complex and hence, require a significant amount of time. Further such

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switching techniques are less effective and not cost efficient. For example, in one of the technique, an application network stack may be built using the Internet Protocol (IP) address of the network Interfaces Further, a same IP addresses may be allotted for Wired and Wireless networks. Such technique may provide continuous connectivity but requires a priority setting tool to set the metric for wired and wireless interfaces. In another example, the application may be provided with tools and network management utilities that help in detecting the link status of the wired and wireless network. Further, such tools route the network packets according to a preset priority. Furthermore, such tools are not cost effective. Moreover, use of such separate tools and network management utilities may degrade the performance of the patient monitoring system.

Hence, there exists a need in the state of art for a technique for facilitating switching between wired and wireless network interface of a bridged network in a patient monitoring s...