WO2004098123A1 - A virtual device - Google Patents
A virtual device Download PDFInfo
- Publication number
- WO2004098123A1 WO2004098123A1 PCT/NO2004/000123 NO2004000123W WO2004098123A1 WO 2004098123 A1 WO2004098123 A1 WO 2004098123A1 NO 2004000123 W NO2004000123 W NO 2004000123W WO 2004098123 A1 WO2004098123 A1 WO 2004098123A1
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- WO
- WIPO (PCT)
- Prior art keywords
- devices
- open
- closed
- area network
- personal area
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Definitions
- This invention relates to mobile communication systems and mobile data services in general and in particular a Virtual Device for use in such systems.
- add-on units are available for the users of mobile devices (cellular telephones and PDAs) , like head-sets, web cameras, external keyboards, printers, etc. These units can be connected to the mobile device through e.g. a cable, an infrared link or a Bluetooth® link.
- the mobile device must be designed for handling these particular external units, and comprise the necessary interfaces and software solutions.
- the configuration is controlled by software agents for each individual external unit; the agents being contained in the main component.
- the application does not furnish any more information on how the components interact or how the terminal is configured.
- the setup is locked to the features which are supported by hardware and software in the main component .
- European Patent Application EP 1282282 A2 describes a personal network in which the JINI service is used to detect applications installed on the units forming the network.
- the JINI service cannot discover and add hardware components to a network; it is only able to recognize applications or services.
- Virtual Device that combine the abilities and resources of several independent devices possessed by the user, like mobile phones, PDAs, etc., by which the user does not have to purchase the resource twice and hence can save money.
- Another object of the invention is to provide a Virtual Device in which the individual devices share resources like processing power, battery power, memory, data, applications, network access points and user-interfaces.
- Still another object is to provide a Virtual Device in which the user stores his setup preferences in a user profile avoiding having to enter his preferences in each individual device.
- the invention relates to a Virtual Device composed of a multitude of stationary and/or portable electronic devices, of which at least one of the devices is a first Open Device with an available inner structure and a network interface, at least one Primitive Device arranged to communicate with other Devices and act as a pure slave to said devices, said Virtual Device further including at least one Closed Device with a closed inner structure and a network interface, , said open and closed devices being connected in a Personal Area Network, a Personal Area Network middleware being installed in said first Open Device, said first Open Device being arranged to act as a Personal Area Network controller.
- the invention relates to a Virtual Device composed of a multitude of stationary and/or portable electronic devices, including an Open Devices with an available inner structure and a network interface, at least one Primitive Device arranged to communicate with other devices and act as a pure slave to said devices, which is characterized in at least one additional Open Device, at least one Closed Device with a closed inner structure and a network interface, said open and closed devices being connected in a Personal Area Network, a Personal Area Network middleware being installed on said Open Devices, said Personal Area Network Middleware being distributed between said Open Devices, said Open Devices being arranged to act as a Personal Area Network controller.
- the invention relates to a Virtual Device composed of a multitude of portable electronic devices, including an Open Device with an available inner structure and a network interface, at least one Primitive Device arranged to communicate with other devices and act as a pure slave to said devices, which is characterized in at least one Closed Device with a closed inner structure and a network interface, said at least one Closed Device being equipped with a network interface connected to an external network which includes a Personal Area Network server, a Personal Area Network middleware being installed on said server, said open and closed devices and said server forming a Personal Area Network operated by said Personal Area Network middleware.
- the invention relates to a Virtual Device composed of a multitude of stationary and/or portable electronic devices, which includes a Closed Device with a closed inner structure and a network interface connected to an external network, at least one Primitive Device arranged to communicate with said Closed Device or devices and act as a pure slave to said device or devices, a server in said external network on which is installed a system and network management software, said server being arranged to communicate with said Closed Device or devices in order to act as a Personal Area Network controller.
- Figure 1 is an overview showing devices that might be included in a Virtual Device in a Personal Area Network according to the present invention
- Figure 2 is a schematic diagram showing the overall architecture of a Personal Area Network
- Figure 3 is a diagram showing a Virtual Device on a PAN with a unique Open Device
- Figure 4 is a diagram showing a PAN application structure
- Figure 5 is a diagram showing the organization of the Personal Area Network Middleware for a Virtual Device on a PAN with a unique Open Device
- Figure 6 is showing a Virtual Device on a PAN with multiple Open Devices
- Figure 7 is showing the Personal Area Network Middleware for a Virtual Device on a PAN with multiple Open Devices
- Figure 8 is showing a networked PAN without any Open Device
- Figure 9 shows a Virtual Device on a networked PAN with an Open Device
- Figure 10 shows the Personal Area Network Middleware for a Virtual Device on a networked PAN with an Open Device.
- PAN Personal Area Network
- This invention proposes and describes a PAN middleware that enables the formation of a Virtual Device on the PAN and that is capable of handling the dynamical presence of devices and the diversity of device types.
- the PAN and his devices In order to realize the Virtual Device, the PAN and his devices must be hidden to the user and his applications and this is done by introducing a PAN middleware.
- the PAN middleware must be capable of handling not only the Personal Area Network but also the heterogeneity and the dynamic of devices. There are precisely these two characteristics that make the PAN middleware different from the traditional Distributed Computing Middleware where the computing nodes are supposed to be stable and equal or at least having the minimum of capabilities e.g. processing, storage, communication, etc.
- Peripheral devices Print, scanner, digital camera, camcorder, etc.
- Electronic devices TV, stereo equipment, loudspeakers, etc.
- the devices can be:
- Primi tive device Simple devices that cannot operate alone but are slave to other devices, e.g. earphone, microphone, display, etc.
- Open device Devices allowing the installation and execution of PAN Middleware and other applications, e.g. PDA, laptop, workstation, etc.
- Closed device Devices that can operate stand-alone but are like a black box i.e. its internal structure and functions are totally hidden and communicate with the environment though only well defined interfaces.
- a digital camera is advanced device having processor, memory, input and output units but does not allow the installation and execution of foreign applications. It communicates with the rest of the word via interfaces like serial, parallel, USB, etc.
- FIG. 3 shows a Virtual Device on a PAN with two primitive devices: microphone and earphone, two Closed devices: Mobile phone and Camcorder, and one Open device: PDA.
- the Open devices should have the ability to use Closed devices. This is possible although very dependent on the interfaces offered by the Closed device.
- the PDA can only communicate with the mobile phone using the AT command [5] to make e.g. a call request .
- the Closed devices can only user other Open or Closed devices if they are programmed for that.
- a PAN middleware is necessary to achieve the resource sharing as above.
- the PAN middleware is located on the PDA since it is the unique device capable of accommodating the PAN Middleware (PANM) .
- PANM PAN Middleware
- the PANM should be able to detect and to recognize what are the devices present in the PAN, what type they are and what capabilities they have or what service they are offering, e.g. printing, sound input, text displaying, etc.
- the PANM must have the mechanism to handle the device profiles containing device type and capabilities and to do the comparison with detected devices.
- the definition of device types must be logical and unambiguous definition of device types. It must be logical to address both composite devices and inherited devices . It must be unambiguous to guarantee the identification of a device type. Ideally, the definition of device types should be standardized.
- the Resource Discovery comprises both the Device and Service Discovery.
- the PANM should be equipped with mechanisms for Device Discovery and Updating.
- One alternative is to carry out polling periodically. Since Primitive devices may be tied to their master and not visible to other, the PANM should also ask also Open and Closed devices for Primitive devices connected to the device.
- the PANM only run the device discovery once and relies on triggering from the network layer to update its device set.
- the changes are only updated when an attempt to reach a device upon request from an application fails.
- the PANM should also store the present devices. It is hence necessary to have a naming convention, e.g. PDA 1, Mobile 2, etc.
- the network addresses (IP, Blutetooth, etc.) and protocols for each device must also be saved.
- the PANM should be able to redirect an output stream from one device to the input stream of another one.
- the sound output stream from the PDA can be redirected to the earphone and the sound input redirected to the microphone. It must intercept the output stream addressed to a device at an output port, perform the necessary transformation and send it to another device on the PAN.
- An API Application Programming Interface
- the input and output redirection should also be done at the application/service level, i.e. one application can be redirected to one device while a second one to another device.
- This capability is more difficult since it depends on the feature of the operating system and may also require a new application structure as shown in Figure 4.
- An application consists of three components: Core, Input and Output.
- the Core component contains the main logic of the application and should remain invariant.
- the Input and Output Components should be specified according to the services supported such as sound input, text input, graphic display, colour printing, etc. If a device offers a service matching the one required then it can be used for the application.
- the user and owner of the PAN should be reserved the right to define the following: What devices are allowed to participate to his PAN when present within the PAN ' s coverage. How the devices should be used at a particular location or at a particular time or according to a certain timetable. How should the redirection between devices be
- PAN Control Since the user, as owner of the PAN, should be the one having the right to decide everything, there is a need for an application called PAN Control that offers interfaces allowing him/her to communicate and control the PAN Middleware. As other applications, the PAN Control should be also structured as Core, Input and Output and should support a variety of input and output services .
- PAN-based applications With the apparition of the PAN, a brand new type of applications called PAN-based applications is born. This new type of applications will actively take advantage of the unique properties of the PAN: device dynamic and resource sharing.
- a typical example of PAN-based applications is an application, which focuses on the control of existing applications, their parallel execution, their flexible and dynamic composition, the distribution of their input and output.
- the PANM should provide an Application Programming Interface (API) allowing the application access to the PAN capabilities and functions.
- API Application Programming Interface
- Such an API can be implemented in different technologies, e.g. Java, CORBA, XML Web service, etc.
- PANM PAN Middleware
- Figure 6 shows a Virtual Device on a PAN with two Primitive devices: microphone and earphone, two Closed devices: Mobile phone and Camcorder, and three Open devices: PDA, Laptop and PC.
- the PAN Middleware is a Distributed Operating System deployed on all the Open devices and coupling them tightly as one.
- Such an alternative demands the implementation of the Distributed OS on all the Open device types and with the rapid growth in type of mobile devices this could be difficult.
- Another disadvantage is that the device dynamic can create serious problem for the Distributed OS that requires much stability.
- the PAN Middleware is a Distributed Computing Middleware, which hides the distribution and communications from the applications and application developers.
- the traditional Distributed Computing Middleware must be extended with functionality to cope with the dynamic of devices.
- This alternative has an advantage compared to the previous in the sense that there are fewer operating systems and the number of Middleware implementations is lower. On the other, it is important to quantify the overhead introduced and to investigate whether it is acceptable for mobile devices with limited processing and storage capabilities and battery life.
- the PAN Middleware consists of the logic necessary to expose the capabilities and functions of each Open device as an XML (extensible Markup Language) Web services [6].
- the other Open devices can hence invoke these Web services by using SOAP (Simple Object Access Protocol) [7].
- SOAP Simple Object Access Protocol
- the PAN Middleware performs the distribution, coordination and control of applications based on the application structure: Core, Input and Output.
- the distribution of the input and output components is already taken care by the Application Redirection Function mentioned earlier. Concerning the Core, it could only be moved and resumed on compatible Open device, i.e. devices capable of supporting it.
- an application Core written in Java can only be moved to a device having a Java Virtual Machine and not to a MS Windows device.
- the mobile agent concept can be appropriate since an agent can stop the execution of an application, serialize it, transport it to another device, de-serialize and resume the execution.
- the PAN middleware should be distributed among the Open devices .
- Resource Sharing can be realized by one or combination of the approaches : Distributed Operating S s em Distributed Computing, XML Web Services or Applica tion distribution , coordination and control .
- a Resource Sharing function is required in the PANM as shown in Figure 7.
- the necessary capabilities and functions in the PAN Middleware (PANM) in the case of an isolated PAN with multiple Open Devices are:
- the Virtual Device does not have any Open device but only either Primi tive or Closed device.
- the Virtual Device will collapse but inevitably there is a way to remedy the situation if there is one device with network connection.
- the mobile phone allows communication with a Computer running PAN Middleware.
- the PAN can function very well because it is logically equivalent to the configuration Isola ted PAN with unique Open device if the Computer on the network is considered as a PAN device.
- This configuration is, however, very interesting since it opens for several relevant usage.
- the network computer can be Home PC or the office workstation that the user always leave behind when traveling but it can still participate and give support to his PAN.
- This network computer can also be provisioned and managed by a Service Provider that offers PAN service to the users.
- i t is possible to realize a Virtual Device on a networked PAN wi thout any Open Device if the user has an Open device on the network (Internet) running the PANM.
- the PAN has all the device types: Open, Closed and Primi tive but also those having network connection.
- This configuration is logically equivalent with the Isolated PAN with multiple Open devices.
- the network computer in this case acts as a safe storage and a Synchronization function should be added in the PANM (PAN Middleware) as shown in figure 10.
- the synchronization function ensures the consistency of the Virtual Device data, settings and profiles.
- a Device Software Installa tion and Upda ting function that offer the possibility to search, select, download and install the appropriate software version for a device on the PAN.
- a Device Software Installa tion and Upda ting function that offer the possibility to search, select, download and install the appropriate software version for a device on the PAN.
- the Device Software Installation and Updating function may carry out the necessary operation and allow seamless introduction of new devices to the Virtual Device.
- PANM PAN Middleware
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04730387A EP1627491A1 (en) | 2003-04-29 | 2004-04-29 | A virtual device |
US10/555,044 US7796572B2 (en) | 2003-04-29 | 2004-04-29 | Virtual device |
JP2006507897A JP4463805B2 (en) | 2003-04-29 | 2004-04-29 | Virtual device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20031931A NO322710B1 (en) | 2003-04-29 | 2003-04-29 | An interface device with open and closed devices for communicating services in a personal network. |
NO20031931 | 2003-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004098123A1 true WO2004098123A1 (en) | 2004-11-11 |
Family
ID=19914708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO2004/000123 WO2004098123A1 (en) | 2003-04-29 | 2004-04-29 | A virtual device |
Country Status (5)
Country | Link |
---|---|
US (1) | US7796572B2 (en) |
EP (1) | EP1627491A1 (en) |
JP (1) | JP4463805B2 (en) |
NO (1) | NO322710B1 (en) |
WO (1) | WO2004098123A1 (en) |
Cited By (1)
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WO2007054866A2 (en) * | 2005-11-08 | 2007-05-18 | Koninklijke Philips Electronics N.V. | Method and apparatus for managing tasks |
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US7836459B2 (en) * | 2006-08-31 | 2010-11-16 | At&T Intellectual Property I, L.P. | System and method for consolidating middleware functionality |
US8855103B2 (en) | 2008-01-17 | 2014-10-07 | Blackberry Limited | Personal network access control system and method |
US8959248B2 (en) * | 2008-02-22 | 2015-02-17 | Microsoft Corporation | Personal computing environment with virtual computing device |
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- 2004-04-29 JP JP2006507897A patent/JP4463805B2/en not_active Expired - Fee Related
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- 2004-04-29 EP EP04730387A patent/EP1627491A1/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
EP1627491A1 (en) | 2006-02-22 |
NO322710B1 (en) | 2006-11-27 |
NO20031931D0 (en) | 2003-04-29 |
JP4463805B2 (en) | 2010-05-19 |
US20060291433A1 (en) | 2006-12-28 |
NO20031931L (en) | 2004-11-01 |
JP2006526210A (en) | 2006-11-16 |
US7796572B2 (en) | 2010-09-14 |
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