WO2010058363A1 - Améliorations d'un système sans fil basées sur une localisation par l'équipement utilisateur - Google Patents

Améliorations d'un système sans fil basées sur une localisation par l'équipement utilisateur Download PDF

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Publication number
WO2010058363A1
WO2010058363A1 PCT/IB2009/055179 IB2009055179W WO2010058363A1 WO 2010058363 A1 WO2010058363 A1 WO 2010058363A1 IB 2009055179 W IB2009055179 W IB 2009055179W WO 2010058363 A1 WO2010058363 A1 WO 2010058363A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
portable user
wireless network
network
operational condition
Prior art date
Application number
PCT/IB2009/055179
Other languages
English (en)
Inventor
Tomasz Mach
Original Assignee
Nokia Corporation
Nokia, Inc.
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 Nokia Corporation, Nokia, Inc. filed Critical Nokia Corporation
Priority to EP09774933A priority Critical patent/EP2361482A1/fr
Priority to CN2009801465357A priority patent/CN102224745A/zh
Publication of WO2010058363A1 publication Critical patent/WO2010058363A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the exemplary and non-limiting embodiments of this invention relate generally to wireless communication systems, methods, devices and computer programs and, more specifically, relate to using position information from a first network (e.g., GPS) for improving performance in or of a second network (e.g., terrestrial cellular).
  • a first network e.g., GPS
  • a second network e.g., terrestrial cellular
  • GPS global positioning system eNB EUTRAN Node B (evolved Node B)
  • E-UTRAN evolved UTRAN also known as LTE or 2
  • UE user equipment UMTS universal mobile telecommunications system also known as 3G
  • Various terrestrial mobile telephony networks operate using signal strength to estimate a mobile terminal's position or speed.
  • layer 1 (Ll) algorithms currently deployed in 3 G UMTS networks take into account only criteria based on measured radio signal quality, for example, the ratio of received signal energy per chip to power density in the band (Ec/Io), or received signal code power (RSCP).
  • the wireless radio access network (WRAN) protocol stack does not take into account any data that is specific to the exact or actual location of the mobile terminal/portable user equipment. This observation is shown by three examples.
  • the reselection timer decides when the UE should reselect to a new cell. It is further used to prevent a false re-selection decision due to a power spike that does not genuinely reflect that the neighbor cell has a larger signal strength. That the network configures these parameters N and T introduces a delay and a potential for error if the network does not configure these parameters properly, particularly for high mobility UEs.
  • the above approach also assumes proper tuning of the network itself, which introduces a high O&M requirement on the network to assure that different received signal strengths correspond to specific physical locations.
  • a method in a first aspect, includes using a first wireless network to determine a position of a portable user equipment. The method also includes the portable user equipment setting one or more operational conditions of the portable user equipment for one or both of operating in or accessing a second wireless network using the determined position.
  • an apparatus in a second aspect, includes a radio frequency transceiver, one or more processors able to communicate with the radio frequency transceiver, and one or more memories including computer program code.
  • the one or more memories and the computer program code are configured to, with the one or more processors, cause the apparatus to perform at least the following: using at least the radio frequency transceiver, using a first wireless network to determine a position of the apparatus; and setting one or more operational conditions of the apparatus for one or both of operating in or accessing a second wireless network using the determined position.
  • a computer program product in a third aspect, includes a computer-readable medium bearing computer program code embodied therein for use with a portable user equipment.
  • the computer program code includes code for using a first wireless network to determine a position of the portable user equipment, and code for causing the portable user equipment to set one or more operational conditions of the portable user equipment for one or both of operating in or accessing a second wireless network using the determined position.
  • an apparatus in a fourth aspect, includes means for using a first wireless network to determine a position of a portable user equipment, and means for causing the portable user equipment to set at least one operational condition of the portable user equipment for one or both of operating in or accessing a second wireless network using the determined position.
  • Figure 1 illustrates a portable user equipment operating in two different wireless networks according to an exemplary environment in which these teachings may be practiced.
  • Figure 2 is a logic flow diagram that illustrates the operation of a method, and may be, e.g., a result of execution of computer program instructions embodied on a computer readable memory, in accordance with one exemplary embodiment of this invention.
  • Figure 3A shows a simplified block diagram of various electronic devices that are suitable for use in practicing the exemplary embodiments of this invention.
  • Figure 3B shows a more particularized block diagram of a portable user equipment such as that shown at Figure 3A.
  • Figure 4 is a logic flow diagram that illustrates the operation of a method, and may be, e.g., a result of execution of computer program instructions embodied on a computer readable memory, in accordance with the exemplary embodiments of this invention.
  • embodiments of the present invention employ a new criteria which can be considered in those and other algorithms to optimize the usage of available network resources and/or increase the service quality as a result.
  • global positioning system e.g., GPS, though any positioning system can be used apart from GPS
  • L1-L3 WCDMA/LTE radio protocol stack noted by example in background above.
  • a UE integrated location positioning system i.e., GPS receiver
  • the UE may obtain multiple positions over a window of time and compute its speed from the elapsed distance over the elapsed time window. That computation may be done in the GPS receiver itself or in another processor of the UE.
  • FIG 1 illustrates an environment in which such teachings may be employed.
  • a mobile/portable UE 10 has access to a first wireless network 100 which is in this example a non-terrestrial positioning network (e.g., GPS).
  • the first wireless network 100 is not limited to a non-terrestrial positioning network but may also be a terrestrial positioning network in other embodiments, which the UE uses to determine its position/speed.
  • the GPS receiver in the UE 10 fixes its position from signals received from multiple GSP satellites (1st GPS satellite 101, 2nd GPS satellite 102 and 3rd GPS satellite 103 shown).
  • the extent of the first network 100 maybe considered the entire page of Figure 1, and fully encompasses a second wireless network 200 which is a terrestrial mobile telephony network such as UMTS, E- UTRAN and GSM which are non-limiting examples of hierarchical terrestrial wireless networks.
  • a terrestrial mobile telephony network such as UMTS, E- UTRAN and GSM which are non-limiting examples of hierarchical terrestrial wireless networks.
  • the second wireless network has a plurality of cells represented by access nodes termed as base stations, nodeBs, e-NBs, or otherwise. Shown is a serving cell 201 and neighbor cells 202, 203 which are within the second wireless network, as well as an additional neighbor cell 204 which is within a third wireless network that is also terrestrial but which may be a different radio access technology RAT than that of the second wireless network 200.
  • Some algorithms for which the UE' s GPS information might be used according to these teachings relate to the taking of measurements and the sending of measurement reports concerning those neighbor cells which maybe within the second network 200 (e.g., cells 202, 203) and/or which may lie in a separate third network (e.g., cell 204).
  • the UE is looking for any cell through many bands.
  • the low/medium/high (e.g. medium state introduced in 3GPP LTE system) mobility mode detection is used in an Ll cell reselection algorithm.
  • the cell power measurements are done in the idle (and/or in the active) mode and are used in a different Ll cell reselection algorithm and also in the handover algorithm.
  • Each of these algorithms can be improved using the UE' s positional data (position, speed) obtained from the non-terrestrial network 100.
  • a technical aspect is that there may be a reduction in the current consumption by searching through fewer bands in the initial search algorithm and by conducting fewer neighbor cell measurements when the UE is not moving or slowly moving, and more accurate and more real-time decisions on the UE' s mobility mode.
  • FIG. 2 is a logic flow diagram that illustrates the operation of a method (and may be, e.g., a result of execution of computer program instructions embodied on a computer readable memory) in accordance with one exemplary embodiment of this invention related to the mobility state determination noted above.
  • the UE activates its location positioning system (e.g., GPS receiver) to provide its current position information. By accumulating multiple positions over time the UE can determine the distance moved over that time and thus determine its speed, which may be done at block 210 or using the positions obtained at blocks 210 and 214.
  • location positioning system e.g., GPS receiver
  • the UE receives from the network the mobility state detection thresholds which define the different velocity states: UE speed between Vmedium and Vhigh corresponds to the medium mobility state; UE speed below Vmedium corresponds to the low mobility mode; and UE speed above Vhigh corresponds to the high mobility mode.
  • the network may define speeds equal to these thresholds as either in the lower one or the higher one of the mobility states that are divided by the particular threshold.
  • the UE obtains another position for itself from the location positioning system (e.g., the GPS system) and either computes its speed using the first position obtained at block 210 or updates the speed it calculated there for itself.
  • the location positioning system e.g., the GPS system
  • the tri-part decision results are shown at blocks 218 A for the low mobility state, 218B for the medium mobility state, and 218C for the high mobility state.
  • the decision is used internally within the UE to change its mobility state according to the decision at block 216, and at 220 the UE applies the current mobility state information.
  • the current mobility state information is applied by the UE setting a timer which indicates how frequently the UE is to measure and report neighbor cells 202-204 to the serving node 201 of the terrestrial network 200.
  • the serving cell 201 uses these neighbor cell measurement reports for cell reselection and handover decisions for the UE 10.
  • the high mobility state UE sets the timer shorter so its reports are more frequent; the low mobility state UE sets the timer longer and its reports are less frequent, and the medium mobility state UE lies between those two extremes.
  • the second network 200 might also put the UE' s positional data which the UE obtains from the first network 100 to use, for example in its O&M functions.
  • Some terrestrial mobile telephony networks 200 currently use Ec/Io information and RSSI information that the UE reports for tuning the network. This alone is insufficient for proper tuning; the terrestrial networks generally had to send out physical vehicles to different locations to verify positions at which certain values of Ec/Io and RSSI were experienced.
  • This physical position data was then used to correlate the UE-reported information with physical layout of the network, which may cause variations to Ec/Io and RSSI based on factors other than simple distance from the cell (e.g., attenuation from buildings or topology, interference due to crossover from other radio towers/transceivers, etc.). Also, operation of certain cells may be modified at different times of day based on traffic conditions; some cells shrinking the geographic area they cover while others may expand to assure contiguous coverage. WCDMA systems engage in such network tuning.
  • the above WCDMA/LTE L1-L3 radio protocol algorithms in the UE which previously reported Ec/Io and RSSI for example are expanded to report to the second network 200 also the UE's position which was obtained from the first, positioning network 100.
  • the UE's signal strength report would then in certain embodiments include the information triplet [geographical location from the first positioning network 100, Ec/Io, RSSI].
  • the UE can include in the report it sends to the second network 200 some other UE received signal related strength or performance data.
  • the second network 200/serving cell 201 receiving such a triplet then stores this enhanced reporting information in a database connected to the network equipment. This database can be then used by a network operator to provide very accurate network coverage at different times of the day, at different physical locations, etc.
  • the location position information (e.g., from the GPS/first network 100) it obtains for itself may also be used in its initial access of the terrestrial/second network 200.
  • the UE's GPS position may be used by the UE to limit the number of frequency bands that it searches to a smaller number than the cell search algorithm tells it to search through. For example, if the UE is quad band and is capable of searching bands used in the US (United States), Japan and the EU (European union), then once the GPS position fixes the UE to lie within the US the UE can conclude it need not search in the frequency bands that are used only in Japan or only in the EU.
  • the granularity of how much the band search can be limited depends on the granularity of the table stored within the local memory of the UE that associates different frequency bands with different physical locations.
  • the relatively small database of the exact geographical band location as in the above example can be periodically updated from the Internet or from the terrestrial/second network 200 and stored in the UE's local memory. This use of these teachings can dramatically reduce the initial cell search time and service availability for the user. This may be enabled if the UE obtains current geographical location position (e.g., GPS) data from the first network 100 prior to undertaking the multiband cell search to find the second network 200, or using a previously stored GPS location prioritize the bands searched prior to an updated/current GPS position being determined.
  • current geographical location position e.g., GPS
  • UE speed data obtained from the first positioning network 100 maybe used to limit the frequency of cell power measurements made while the UE is in an idle mode. While in the idle mode the UE is still operating within the terrestrial/second network 200, but is within a discontinuous reception period DRX (or discontinuous transmission period DTX).
  • a reduced frequency of these cell measurements can increase battery life in the UE significantly by reducing their frequency when the UE is currently not moving or moving very slowly (e.g., walking speed).
  • the frequency of the cell measurements is increased accordingly.
  • This implementation is similar in concept to the mobility mode noted in detail above and with respect to Figure 2.
  • the UE radio resource management (RRM) protocol can determine the current mobility state (e.g., low/medium/high) and apply that information to radio algorithms internal to the UE.
  • Non-limiting examples include cell handover/reselection, such as where a cell diversity concept is applied so as to bias the preferred cells for a handover/reselection, bias macro/larger cells for fast moving terminals, and bias pico/smaller cells for slowly moving terminals.
  • the various algorithms affected by these teachings may be triggered after every cell handover/re-selection.
  • the triggering frequency, or the triggering of using the UE' s positional/speed information as an input to one of those algorithms may be configured by the network and signaled to the UE that is to implement that modified input to the algorithm.
  • a wireless network 200 is adapted for communication over a wireless link 11 with an apparatus, such as a mobile communication device which may be referred to as a UE 10, via a network access node, such as a Node B (base station), and more specifically an eNB 12.
  • a network access node such as a Node B (base station)
  • eNB 12 evolved Node B
  • the network 200 may include a network control element (NCE) 14 that may include mobility management/serving gateway (MME/S GW) functionality as is known in the art, and which provides connectivity with other networks as shown, such as a publicly switched telephone network and/or a data communications network (e.g., the Internet).
  • the UE 10 includes a controller, such as a computer or a data processor (DP) 1OA, a computer-readable memory medium embodied as a memory (MEM) 1OB that stores a program of computer instructions (PROG) 1OC, and a suitable radio frequency (RF) transceiver 1OD for bidirectional wireless communications with the eNB 12 via one or more antennas.
  • DP data processor
  • PROG program of computer instructions
  • RF radio frequency
  • the eNB 12 also includes a controller, such as a computer or a data processor (DP) 12 A, a computer-readable memory medium embodied as a memory (MEM) 12B that stores a program of computer instructions (PROG) 12C, and a suitable radiofrequency RF transceiver 12D for communication with the UE 10 via one or more antennas.
  • the eNB 12 is coupled via a data / control path 13 to the NCE 14.
  • the path 13 may be implemented as an Sl interface of the LTE system, or a similar interface of other terrestrial systems.
  • the eNB 12 may also be coupled to another eNB via data / control path 15, which may be implemented as the X2 interface of the LTE network or similar for other terrestrial networks.
  • At least one of the PROGs 1 OC and 12C is assumed to include program instructions that, when executed by the associated DP, enable the device to operate in accordance with the exemplary embodiments of this invention, as detailed particularly above and more generally below.
  • the exemplary embodiments of this invention may be implemented at least in part by computer software executable by the DP 1OA of the UE 10 and/or by the DP 12A of the eNB 12, or by hardware, or by a combination of software and hardware (and firmware).
  • the various embodiments of the UE 10 can include, but are not limited to, cellular telephones, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate combinations of such functions.
  • PDAs personal digital assistants
  • image capture devices such as digital cameras having wireless communication capabilities
  • gaming devices having wireless communication capabilities
  • music storage and playback appliances having wireless communication capabilities
  • Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate combinations of such functions.
  • the computer readable MEMs 1 OB and 12B may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the DPs 1OA and 12A may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multicore processor architecture, as non- limiting examples.
  • general purpose computers special purpose computers
  • microprocessors microprocessors
  • DSPs digital signal processors
  • processors based on a multicore processor architecture, as non- limiting examples.
  • Figure 3B illustrates further detail of an exemplary UE in both plan view (left) and sectional view (right), and the invention may be embodied in one or some combination of those more function-specific components.
  • the UE 10 has a graphical display interface 20 and a user interface 22 illustrated as a keypad but understood as also encompassing touch-screen technology at the graphical display interface 20 and voice-recognition technology received at the microphone 24.
  • a power actuator 26 controls the device being turned on and off by the user.
  • the exemplary UE 10 may have a camera 28 which is shown as being forward facing (e.g., for video calls) but may alternatively or additionally be rearward facing (e.g., for capturing images and video for local storage).
  • the camera 28 is controlled by a shutter actuator 30 and optionally by a zoom actuator 32 which may alternatively function as a volume adjustment for the speaker(s) 34 when the camera 28 is not in an active mode.
  • FIG. 3B Within the sectional view of Figure 3B are seen multiple transmit/receive antennas 36 that are typically used for cellular communication over one or more terrestrial networks 200 and/or the positioning (GPS) network 100.
  • the antennas 36 may be multi-band for use with other radios in the UE.
  • the operable ground plane for the antennas 36 is shown by shading as spanning the entire space enclosed by the UE housing though in some embodiments the ground plane may be limited to a smaller area, such as disposed on a printed wiring board on which the power chip 38 is formed.
  • the power chip 38 controls power amplification on the channels being transmitted and/or across the antennas that transmit simultaneously where spatial diversity is used, and amplifies the received signals.
  • the power chip 38 outputs the amplified received signal to the radio-frequency (RF) chip 40 which demodulates and downconverts the signal for baseband processing.
  • the baseband (BB) chip 42 detects the signal which is then converted to a bit-stream and finally decoded. Similar processing occurs in reverse for signals generated in the apparatus 10 and transmitted from it.
  • Signals to and from the camera 28 pass through an image/video processor 44 which encodes and decodes the various image frames.
  • a separate audio processor 46 may also be present controlling signals to and from the speakers 34 and the microphone 24.
  • the graphical display interface 20 is refreshed from a frame memory 48 as controlled by a user interface chip 50 which may process signals to and from the display interface 20 and/or additionally process user inputs from the keypad 22 and elsewhere.
  • Certain embodiments of the UE 10 may also include one or more secondary radios such as a GPS receiver 37 and a Bluetooth® radio 39 and a wireless local area network radio (not shown), which may incorporate an antenna on-chip or be coupled to an off-chip antenna.
  • secondary radios such as a GPS receiver 37 and a Bluetooth® radio 39 and a wireless local area network radio (not shown), which may incorporate an antenna on-chip or be coupled to an off-chip antenna.
  • various memories such as random access memory RAM 43, read only memory ROM 45, and in some embodiments removable memory such as the illustrated memory card 47 on which the various programs 1OC are stored. All of these components within the UE 10 are normally powered by a portable power supply such as a battery 49.
  • the aforesaid processors 38, 40, 42, 44, 46, 50 may operate in a slave relationship to the main processor 1OA, 12 A, which may then be in a master relationship to them.
  • Embodiments of this invention are most relevant to the main processor 1OA which apart from other algorithms (e.g. user applications) typically execute the L1-L3 radio protocol algorithms, though it is noted that other embodiments need not be disposed there but may be disposed across various chips (e.g., the baseband chip 42) and memories as shown or disposed within another processor that combines some of the functions described above for Figure 3B.
  • any or all of these various processors of Figure 3B access one or more of the various memories, which may be on-chip with the processor or separate therefrom.
  • Similar function-specific components that are directed toward communications over a network broader than a piconet e.g., components 36, 38, 40, 42-45 and 47
  • the access node 12 may have an array of tower-mounted antennas rather than the two shown at Figure3B.
  • Figure 4 is a logic flow diagram that illustrates the operation of a more general method than that shown at Figure 2, and may be, e.g., a result of execution of computer program instructions, in accordance with the exemplary embodiments of this invention.
  • the exemplary embodiments of this invention provide from the perspective of the portable user equipment a method, apparatus and computer program(s) to use a first wireless network at block 410 to determine a position of a portable user equipment, and to set at block 420 an operational condition of the portable user equipment for operating in or for accessing a second wireless network using the determined position.
  • the first network comprises as a non-limiting example a non-terrestrial positioning network and the second network comprises as a non-limiting example a terrestrial mobile telephony network.
  • the method includes determining a speed of the portable UE, which could include using the first network to determine multiple positions of the portable user equipment and from the multiple positions determining the speed of the portable user equipment.
  • a GPS receiver e.g., GPS receiver 37
  • the operational condition of the portable user equipment is set based on the determined speed of the portable user equipment.
  • the operational condition is a mobility state of the portable user equipment.
  • the operational condition is a frequency at which the portable user equipment sends cell measurement reports to the second wireless network.
  • the operational condition comprises a frequency at which the portable user equipment measures neighbor cells.
  • setting the operational condition of the portable user equipment includes limiting radio frequency bands in which to search for accessing the second wireless network based on the determined position.
  • setting the operational condition of the portable user equipment includes setting a content of a measurement report that the portable user equipment sends to the second wireless network to include the position determined from the first wireless network.
  • the content includes an indication of the position, an indication of signal strength of a signal received at the portable user equipment from the second wireless network, and an indication of signal to noise ratio of the signal received at the portable user equipment from the second wireless network.
  • the measurement report is sent to the second wireless network in response to a request message received at the portable user equipment from the second wireless network.
  • block 416 can be combined with any other block.
  • the various exemplary embodiments may be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
  • firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
  • various aspects of the exemplary embodiments of this invention may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as nonlimiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • any of the embodiments described may be implemented as computer program, comprising code for performing any of the actions (in combination or not in combination) described above, when the computer program is run on a processor.
  • the integrated circuit, or circuits may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor or data processors, a digital signal processor or processors, baseband circuitry and radio frequency circuitry that are configurable so as to operate in accordance with the exemplary embodiments of this invention.
  • an apparatus in an exemplary embodiment includes position determining circuitry configured to use a first wireless network to determine a position of a portable user equipment and includes controller circuitry configured to set at least one operational condition of the portable user equipment for one or both of operating in or accessing a second wireless network using the determined position.
  • the exemplary embodiments of this invention are not limited for use with only this one particular type of terrestrial or non- terrestrial wireless communication system, and that they may be used to advantage in any of various wireless communication systems such as for example E-UTRAN, UTRAN, WCDMA, GSM, etc.
  • the terms "connected,” “coupled,” or any variant thereof mean any connection or coupling, either direct or indirect, between two or more elements, and may encompass the presence of one or more intermediate elements between two elements that are "connected” or “coupled” together.
  • the coupling or connection between the elements can be physical, logical, or a combination thereof.
  • two elements may be considered to be “connected” or “coupled” together by the use of one or more wires, cables and/or printed electrical connections, as well as by the use of electromagnetic energy, such as electromagnetic energy having wavelengths in the radio frequency region, the microwave region and the optical (both visible and invisible) region, as several non- limiting and non-exhaustive examples.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention porte sur un procédé qui comprend l'utilisation d'un premier réseau sans fil par un équipement utilisateur portable pour déterminer une position de l'équipement utilisateur portable, et le réglage par l'équipement utilisateur portable d'une ou plusieurs conditions de fonctionnement de l'équipement utilisateur portable pour fonctionner dans et/ou accéder à un second réseau sans fil à l'aide de la position déterminée. L'invention porte également sur un appareil qui comprend un émetteur-récepteur radiofréquence, un ou plusieurs processeurs aptes à communiquer avec l'émetteur-récepteur radiofréquence, et une ou plusieurs mémoires comprenant un code de programme d'ordinateur. La ou les mémoires et le code de programme d'ordinateur sont configurés pour, avec le ou les processeurs, amener l'appareil à effectuer au moins les opérations suivantes : utilisation d'un premier réseau sans fil pour déterminer une position de l'appareil ; et réglage d'une ou plusieurs conditions de fonctionnement de l'appareil pour un fonctionnement dans et/ou un accès à un second réseau sans fil à l'aide de la position déterminée.
PCT/IB2009/055179 2008-11-20 2009-11-19 Améliorations d'un système sans fil basées sur une localisation par l'équipement utilisateur WO2010058363A1 (fr)

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EP09774933A EP2361482A1 (fr) 2008-11-20 2009-11-19 Améliorations d'un système sans fil basées sur une localisation par l'équipement utilisateur
CN2009801465357A CN102224745A (zh) 2008-11-20 2009-11-19 基于通过用户设备的位置定位的无线系统改进

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US19979708P 2008-11-20 2008-11-20
US61/199,797 2008-11-20

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