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WO2008077988A1 - Configuration d'un réseau domestique sans fil - Google Patents

Configuration d'un réseau domestique sans fil Download PDF

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Publication number
WO2008077988A1
WO2008077988A1 PCT/FI2006/050581 FI2006050581W WO2008077988A1 WO 2008077988 A1 WO2008077988 A1 WO 2008077988A1 FI 2006050581 W FI2006050581 W FI 2006050581W WO 2008077988 A1 WO2008077988 A1 WO 2008077988A1
Authority
WO
WIPO (PCT)
Prior art keywords
space
section
fixed
fixed wireless
area network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/FI2006/050581
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English (en)
Other versions
WO2008077988A8 (fr
Inventor
Jani Roivainen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELEKTROBIT GROUP PLC
Original Assignee
ELEKTROBIT GROUP PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ELEKTROBIT GROUP PLC filed Critical ELEKTROBIT GROUP PLC
Priority to PCT/FI2006/050581 priority Critical patent/WO2008077988A1/fr
Publication of WO2008077988A1 publication Critical patent/WO2008077988A1/fr
Publication of WO2008077988A8 publication Critical patent/WO2008077988A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/06—Buying, selling or leasing transactions
    • G06Q30/08—Auctions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information

Definitions

  • the invention relates to a wireless personal area network, a network element of a wireless personal area network, a method for configuring a wire- less personal area network, and a computer program implementing the method.
  • Wireless personal area networks provide local network connectivity for wireless terminals, which may number thousands in a single WPAN.
  • a list of wireless terminals is provided for the mobile wireless terminal.
  • a user of the mobile wireless terminal may use the entries on the list for connecting and controlling individual wireless terminals on the list.
  • the list may include a plenty of wireless terminals irrelevant to the user, and thus degrade the usability of the personal area network. Irrelevant wireless terminals may be outside the sight of the user or otherwise be of no importance due to the spatial distance or obstructions between the user and the wireless terminals. Therefore, it is useful to consider means for improving the usability of WPANs.
  • An object of the invention is to provide an improved wireless personal area network, a network element of a wireless personal area network, a method for configuring a personal area network, and a computer program.
  • a wire- less personal area network comprising: a plurality of space-fixed wireless terminals; and a register comprising entries of the space-fixed wireless terminals, wherein an entry indicates an association between a space-fixed wireless terminal and a section in a physical structure on the basis of the spatial location of the space-fixed wireless terminal.
  • a network element of a wireless personal area network comprising a plurality of space-fixed wireless terminals, the network element comprising a register comprising entries of the space-fixed wireless terminals, wherein an entry indicates an association between a space-fixed wireless terminal and a section in a physical structure on the basis of the spatial location of the space-fixed wireless terminal.
  • a method of configuring a wireless personal area network comprising a plurality of space-fixed wireless terminals, the method comprising setting up a register comprising entries of the space-fixed wireless terminals, wherein an entry indicates an association between a space-fixed wireless terminal and a section in a physical structure on the basis of the spatial location of the space-fixed wireless terminal.
  • a computer program encoding instructions for executing a computer process for configuring a wireless personal area network, wherein the wireless personal area network comprises a plurality of space-fixed wireless terminals and the computer process comprises setting up a register comprising entries of the space-fixed wireless terminals, wherein an entry indicates an association between a space-fixed wireless terminal and a section in a physical structure on the basis of the spatial location of the space-fixed wireless terminal.
  • Entries in the register enable relevant information to be provided for a mobile wireless terminal entering the section, wherein the relevant information may relate to the space-fixed wireless terminals located in the section. Further, based on register entries, transmission of non-relevant infor- mation to the mobile terminal may be blocked, thus reducing the information flow to the mobile wireless terminal and improving the usability of the mobile terminal. A blocking of the transmission non-relevant information further results in increase of the bandwidth for payload.
  • Figure 1A shows a first example of a wireless personal network area
  • Figure 1B shows a second example of a wireless personal network area
  • Figure 2 shows an example of a fixed terminal
  • Figure 3 shows a first example of a base unit
  • Figure 4 illustrates a second example of a base unit
  • Figure 5 illustrates a methodology according to embodiments of the invention.
  • a wireless personal area network 100 comprising network elements, such as a plurality of space-fixed wireless terminals 1 to 8 (FT#1 , FT#2,.., FT#N), a wireless gateway (WGW) 9 and a base unit 10 (BU).
  • the space-fixed wireless terminals 1 to 8 are herein referred to as fixed terminals 1 to 8.
  • the WPAN 100 is a digital network, which may possess self- organizing and ad-hoc aspects.
  • a ZigBee network topology conforming an IEEE 802.15.4 specification is used for illustrating general aspects of WPAN 100.
  • Figures 1A and 1B show a physical structure 104, such as a building or a structure in a building, which confines the WPAN 100.
  • the physical structure 104 may be divided into sections 106A to 106D by boundaries 102A to 102D.
  • the boundary 102A to 102D may be a physical boundary, such as a wall or another structure reducing mobility of persons in the physical structure 104.
  • the section 106A to 106D may be a room, for example.
  • the boundary 102A to 102D may also be a non-physical boundary, such as an imaginary boundary in an open-plan office.
  • FIGS 1A and 1 B further show a mobile wireless terminal 11 (MT), herein also referred to as a mobile terminal 11.
  • the mobile terminal 11 com- prises communicating means, such as a radio transceiver and processor for executing communication protocol, for wirelessly communicating with fixed terminals 1 to 8 and possibly with the wireless gateway 9 and/or the base unit 10.
  • the mobile terminal 11 typically comprises a user interface, such as a display and keyboard/keypad.
  • the mobile terminal 11 may further implement a communication protocol for communicating information with the fixed terminals 1 to 8 and/or the wireless gateway 9.
  • the communication protocol may further enable communication of access control information with the base unit 10, where the access control in- formation includes a list of relevant fixed terminals.
  • a relevant fixed terminal is located in section 106A, where the mobile terminai 11 is located.
  • the fixed terminals 1 to 8 are wirelessly coupled to the base unit 10 by the wireless gateway 9.
  • a fixed terminal 1 to 8 may also be referred to as an end device in a ZigBee system.
  • the fixed terminal 1 to 8 is typically a battery powered sen- sor/controlier module, which may sensor/control devices, such as home appliances, thermostats, humidistats, smoke detectors, lights and a heating system.
  • the fixed terminals 1 to 8 are fixed in the sense that the section 106A to 106D in which the fixed terminal 1 to 8 is located remains unaltered.
  • each fixed terminal 1 to 8 holds a terminal identity, which is specific to the fixed terminal 1 to 8.
  • the terminal identity may be used for directing communication to the fixed terminal 1 to 8 and/or identifying an origin of communication from a fixed terminal 1 to 8.
  • the terminal identity may be a number sequence.
  • the terminal identity may further include information on the type of the fixed terminal 1 to 8.
  • the mobile terminal 11 may comprise an operating system for operating/monitoring at least some of the fixed terminals 1 to 8.
  • the monitoring includes observing results generated by a sensor or a fixed terminal 1 to 8.
  • the operating includes remotely using controlling capability, such as switching capability, of the fixed terminal 1 to 8.
  • Communication associated with the remote operating/monitoring between a fixed terminal 1 to 8 and the mobile terminal 11 may be implemented with a direct wireless link between the mobile terminal 11 and the fixed terminal 1 to 8 or indirectly via the wireless gateway 9.
  • the mobile terminal 11 is a mobile terminal of a wireless telecommunication system.
  • the mo- bile terminal is capable of operating both in the WPAN 100 and the wireless telecommunication system.
  • the wireless telecommunication system may be a cellular telecommunication system based on, for example, GSM ⁇ Global System for Mobile Communications), GERAN ⁇ GSM/EDGE Radio access network), GPRS (General Packet Radio Service), E-GPRS (EDGE GPRS), UMTS (Universal Mobile Telecommunications System), CDMA2000 (CDMA, Code Division Multiple Access), US-TDMA (US Time Division Multiple Access), TDS- CDMA (Time Division Synchronization CDMA) or WiMax (Worldwide interoperability for Microwave Access).
  • the mobile terminal 11 is a re- mote control with user interface.
  • the wireless telecommunication system is WLAN (Wireless Local Area Network).
  • the base unit 10 may also be referred to as Coordinator in a Zigbee system.
  • the base unit 10 is typically the most capable device of the WPAN 100, having capability of forming the root of WPAN 100, providing with connectivity to other networks and storing information about the WPAN 100, including acting as the repository for security keys.
  • the wireless gateway 9 also referred to as Router in a ZigBee system, can act as an intermediate router, passing data between the base unit 10 and the fixed terminals 1 to 8, and between the fixed terminals 1 to 8.
  • the fixed terminals 1 to 8 may form spatial sub-networks 108A, 108B according to their location in the physical structure 104.
  • fixed terminals 1 to 3 form a spatial sub-network 108A
  • fixed terminals 4 and 5 form a spatial sub-network 108B
  • Other fixed terminals 6 to 8 may or may not form spatial sub-networks.
  • each spatial sub-network comprises a sub-network specific wireless gateway 9 as shown in Figure 1B.
  • a spatial sub-network 108A, 108B may be associated with a section 106A, 106B of the physical structure 104.
  • the section 106A, 106B confines fixed terminals 1 to 8 belonging to the spatial sub-network 108A, 108B.
  • spatial sub-network 108A is associated with section 106A
  • spatial sub-network 108B is associated with section 106B.
  • at least some of the fixed terminals 1 to 8 are capable of wirelessly communicating with the mobile terminal 11.
  • the wireless communication includes transmitting and receiving radio signals between the fixed terminal 1 to 8 and the mobile terminal 11.
  • a fixed terminal (FT) 200 may comprise a processing unit (PU) 202, a memory unit (MEM) 204, a transceiver (TRX) 206 and a sensor/controller (S/C) 208.
  • the processing unit 202 executes computer processes encoded into a computer program.
  • the computer program may be stored in the memory unit 204.
  • the transceiver 206 implements a wireless communication link between the fixed terminal 200 and the wireless gateway 9.
  • the transceiver 206 may further implement a wireless communication link between the fixed terminal 200 and the mobile terminal 11.
  • the transceiver 206 and the processing unit 202 are configured to estimate signal strength of a communication signal received from the mobile terminal 1 1.
  • the signal strength may be presented with an RSSI value (Received Signal Strength Indicator), for exam- pie.
  • the signal strength may be used for indicating the distance between the transceiver 206 and the mobile terminal 11.
  • Information on the transmission power of the communication signal may also be used for a distance determination.
  • Information on the signal strength may be transmitted wirelessiy to the base unit 10 directly or via the wireless gateway 9.
  • the mobile terminal 11 measures signal strength of signals transmitted by the fixed terminals 1 to 8 and transmit information on the signal strength to the base unit 10.
  • the sensor/controller 208 may measure a physical quantity, such as an environment parameter or control operation of a system, such as a heating system and/or an electricity system.
  • the base unit (BU) 300 comprises a processing unit (PU) 302, a memory unit (MEM) 304 and a transceiver (TRX) 306.
  • the processing unit 302 executes computer processes encoded into a computer program.
  • the computer program may be stored in the memory unit 304.
  • the transceiver 306 implements a wireless communication link between the base unit 300 and the wireless gateway 9.
  • the transceiver 306 may further implement a wireless communication link between the fixed terminal 1 to 8 and the base unit 300.
  • the base unit (BU) 400 comprises a register 402, a locating unit (LU) 404 and a command unit (CU) 406.
  • the transceiver 306 receives signals 408 from the space-fixed wireless terminals 1 to 8 directly or via the wireless gateway 9.
  • the signals 408 may carry signal strength information on the signal strength transmitted by the mobile terminal 11 and received by each fixed terminal 1 to 8.
  • the signal strength information is inputted into the locating unit 404.
  • the locating unit 404 indicates if the mobile terminal 11 enters a section 106A, 106B. In the examples of Figures 1A and 1B, the mobile terminal 11 enters section 106A.
  • the locating unit 404 calculates a position vector of the mobile terminal 11 by using signal strength information.
  • the signal strength information may be generated by fixed terminals 1 to 8 having signal strength measuring capability.
  • the signal strength information is generated by the wireless gateway 9.
  • the locating unit 404 may compare the position vector with the topography of the physical structure 104 and determine the section 106A according to the comparison.
  • the locating unit 404 includes information on the boundaries 102A to 102D of the sections 106A, 106B and compares the position vector with the boundaries 102A to 102D.
  • a section 106A, 106B with boundaries 102A to 102D confining the position vector is considered to be a relevant section 106A,
  • the register 402 comprises N entries (#1 , #2,.., #N) of fixed terminals 1 to 8.
  • an entry (#1 , #2,.., #N) comprises a terminal identity (FT#1 , FT#2,..,FT#N) and section identity (S#1 , S#1 ,..,S#M).
  • the section identity is specific to a section 106A to106D.
  • a terminal identity is associated with a section identity.
  • a fixed terminal holding a terminal identity is located in the section holding the section identity.
  • fixed terminal FT#1 is associated with section S#1
  • fixed terminal FT#2 is associated with section S#2.
  • section S#1 is associated with fixed terminals FT#1 , FT#3, FT#N-1
  • section S#2 is associated with fixed terminals FT#2, FT#K, FT#N.
  • the association between the terminal identity and the section identity may be implemented with an associative data structure.
  • the entries (#1 , #2,.., #N) are entries of an access control list of a ZigBee system.
  • the access control fist is a table used by a device to determine which devices are authorized to perform a specific function.
  • the access control list may further store security material, such as cryptographic keys, frame counts and security level information of fixed devices 1 to 8.
  • the access control list is typically a part of a PAN (Personal Area Network) information base.
  • the locating unit 404 may communicate the section identity 412 to the command unit 406.
  • the command unit 406 may retrieve terminal identities 414 from the register 402, wherein the terminal identities 414 are associated with the relevant section 106A by using the section identity 412.
  • the command unit 406 issues a command 416 to communicate terminal identities of fixed terminals 1 to 3 lo- eating in the relevant section 106A.
  • the terminal identities are communicated to the mobile terminal 11 which has entered the relevant section 106A.
  • the command 416 is transmitted in a command transmission 410 to the wireless gateway 9 and/or to the fixed terminals 1 to 3 in the section 106A.
  • the mobile terminal 11 may display the terminal identities to the user, for example in a list showed on the user interface.
  • a list restricted to fixed terminals 1 to 3 locating in the relevant section 106A reduces showing irrelevant fixed terminals to the user.
  • the irrelevant fixed terminals are outside the relevant section 106A.
  • the command 416 includes an allowance message, which allows the fixed terminals 1 to 3 to identify themselves with the mobile terminal 11.
  • the fixed terminals 1 to 3 may send a radio transmission to the mobile terminal 11 , which radio transmission includes the terminal identity of each fixed terminal 1 to 3.
  • the command 416 includes the terminal identities of the fixed terminals 1 to 3 locating in the relevant section 106A.
  • the command may be transmitted to the mobile terminal 11 from the wireless gateway 9, fixed terminal 1 to 3 and/or from the base unit 10.
  • the WPAN 100 further comprises coded instructions to block communication of terminal identities of fixed termi- nals 6 to 8 to the mobile terminal 11 entering the relevant section 106A, which fixed terminals 6 to 8 are outside the relevant section 106A.
  • This embodiment may be relevant when the configuration of the WPAN 100 assumes that the terminal identities of the fixed terminals 1 to 8 be communicated to the mobile terminal 11 by default. Thus, terminal identities of fixed terminals 1 to 3 locat- ing in the relevant section 106A are not blocked.
  • the coded instructions may be implemented with software, which is executed in the processor unit 302 of the base unit 300.
  • the command 416 includes display instructions to show the terminal identities of the fixed terminals 1 to 3 lo- eating in the relevant section 106A. Identities of fixed terminals 1 to 8 outside the relevant section 106A may be available to the mobile terminal 11 , but the display instructions instruct the mobile terminal 1 1 to display only terminal identities of the fixed terminals 1 to 3 locating in the relevant section 106A.
  • the WPAN 100 further includes an updating unit (UDU) 420 for updating the information in the register 402.
  • UDU updating unit
  • the updating comprises setting up the register 402 by inputting an input 418 including terminal identities and section identities into the register 402.
  • the updating unit 420 may be implemented with the user interface of the mobile terminal 11. In an embodiment of the invention, the updating unit 420 is con- nected to the transceiver 306, and the updating may be carried out remotely.
  • the locating unit 404 may be implemented with a computer program executable in a digital processor, such as processing unit 302 of the base unit 300, in the WPAN.
  • the locating unit 404 may also be located in the wireless gateway 9 and/or in a fixed terminal 1 to 8.
  • the command unit 406 may be implemented with a computer program executable in a digital processor, such as processing unit 302 of the base unit 300, in the WPAN.
  • the command unit 406 may also be located in the wireless gateway 9 and/or in a fixed terminal 1 to 8.
  • a register 402 comprising entries of the space-fixed wireless terminals is set up, wherein an entry indicates an association between a space-fixed wireless terminal 1 to 5 and a section 106A, 106B in a physical structure 104 on the basis of the spatial location of the space-fixed wireless terminal 1 to 5.
  • a mobile terminal 1 1 enters the section 106A.
  • a command 416 to communicate identities of space-fixed wireless terminals 1 to 3 locating in a relevant section 106A is issued to a mo- bile terminal 11 entering the relevant section 106A.
  • communication of identities of space-fixed wireless terminals 4 to 8 to a mobile terminal 11 entering the relevant section 106A is blocked, which space-fixed wireless terminals 4 to 8 are outside the relevant section 106A.
  • the method ends.
  • Embodiments of the method may be implemented as a computer program comprising instructions for executing a computer process in a digital processor, such as the processing unit 302 of the base unit 400.
  • the computer program may be embodied in a computer program product.
  • the computer program may be stored on a computer program distribution medium readable by a computer or a processor.
  • the computer program medium may be, for example but not limited to, an electric, magnetic, optical, infrared or semiconductor system, device or transmission medium.
  • the computer program medium may include at least one of the following media: a computer readable medium, a program storage medium, a record medium, a computer readable memory, a random access memory, an erasable programmable read-only memory, a computer readable software distribution package, a computer readable signal, a computer readable telecommunications signal, computer readable printed matter, and a computer readable compressed soft- ware package.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Accounting & Taxation (AREA)
  • Strategic Management (AREA)
  • General Physics & Mathematics (AREA)
  • Economics (AREA)
  • Marketing (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • Development Economics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un réseau domestique sans fil (WPAN), un élément de réseau, un procédé de configuration d'un réseau domestique sans fil et un programme informatique. Le réseau domestique sans fil comporte : une pluralité de terminaux sans fil, positionnés dans l'espace (1 à 8); et un registre (402) contenant des entrées correspondant aux terminaux sans fil positionnés dans l'espace (1 à 5), une entrée indiquant une association entre un terminal sans fil positionné dans l'espace (1 à 5) et une section d'une structure physique, basée sur la localisation spatiale du terminal sans fil positionné dans l'espace (1 à 8).
PCT/FI2006/050581 2006-12-22 2006-12-22 Configuration d'un réseau domestique sans fil Ceased WO2008077988A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2006/050581 WO2008077988A1 (fr) 2006-12-22 2006-12-22 Configuration d'un réseau domestique sans fil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2006/050581 WO2008077988A1 (fr) 2006-12-22 2006-12-22 Configuration d'un réseau domestique sans fil

Publications (2)

Publication Number Publication Date
WO2008077988A1 true WO2008077988A1 (fr) 2008-07-03
WO2008077988A8 WO2008077988A8 (fr) 2008-12-11

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PCT/FI2006/050581 Ceased WO2008077988A1 (fr) 2006-12-22 2006-12-22 Configuration d'un réseau domestique sans fil

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5544321A (en) * 1993-12-03 1996-08-06 Xerox Corporation System for granting ownership of device by user based on requested level of ownership, present state of the device, and the context of the device
US20050147133A1 (en) * 1999-11-15 2005-07-07 Tang Hong D. Systems, devices, and methods for providing services in a proximity based environment
EP1612999A1 (fr) * 2004-06-29 2006-01-04 Microsoft Corporation Système de détection de proximité utilisant des mesures d'intensité de signals sans fil
US20060240774A1 (en) * 2005-04-20 2006-10-26 Jan Blom Radio system, terminal device, computer program product, and method of defining availability of queried devices
WO2007012998A1 (fr) * 2005-07-29 2007-02-01 Koninklijke Philips Electronics N.V. Systeme et procede de recherche de services dependant d'un contexte s'appliquant a des dispositifs medicaux mobiles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5544321A (en) * 1993-12-03 1996-08-06 Xerox Corporation System for granting ownership of device by user based on requested level of ownership, present state of the device, and the context of the device
US20050147133A1 (en) * 1999-11-15 2005-07-07 Tang Hong D. Systems, devices, and methods for providing services in a proximity based environment
EP1612999A1 (fr) * 2004-06-29 2006-01-04 Microsoft Corporation Système de détection de proximité utilisant des mesures d'intensité de signals sans fil
US20060240774A1 (en) * 2005-04-20 2006-10-26 Jan Blom Radio system, terminal device, computer program product, and method of defining availability of queried devices
WO2007012998A1 (fr) * 2005-07-29 2007-02-01 Koninklijke Philips Electronics N.V. Systeme et procede de recherche de services dependant d'un contexte s'appliquant a des dispositifs medicaux mobiles

Non-Patent Citations (2)

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Title
CHAUDHRY ET AL.: "A proxy-enabled service discovery architecture to find proximity-based services in 6LoWPAN", EMBEDDED AND UBIQUITOUS COMPUTING, INTERNATIONAL CONFERENCE, EUC 2006, PROCEEDINGS (LECTURE NOTES IN COMPUTER SCIENCE), BERLIN: SPRINGER-VERLAG, vol. 4096, 1 August 2006 (2006-08-01) - 4 August 2006 (2006-08-04), pages 956 - 965 *
SCHULZRINNE ET AL.: "Ubiquitous Computing in Home Networks", IEEE COMMUNICATIONS MAGAZINE, vol. 41, no. 11, November 2003 (2003-11-01), pages 128 - 135, Retrieved from the Internet <URL:http://www.ieeexplore.ieee.org/iel5/35/27889/01244933.pdf?tp=&arnumber=1244933isnumber=27889> *

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