WO2001089245A1 - Architecture de terminal adaptable - Google Patents

Architecture de terminal adaptable Download PDF

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Publication number
WO2001089245A1
WO2001089245A1 PCT/EP2001/003128 EP0103128W WO0189245A1 WO 2001089245 A1 WO2001089245 A1 WO 2001089245A1 EP 0103128 W EP0103128 W EP 0103128W WO 0189245 A1 WO0189245 A1 WO 0189245A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
filtering module
handset
filters
communication
Prior art date
Application number
PCT/EP2001/003128
Other languages
English (en)
Inventor
John Domokos
Sian Armstrong
Original Assignee
Roke Manor Research Limited
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 Roke Manor Research Limited filed Critical Roke Manor Research Limited
Priority to AU2001242487A priority Critical patent/AU2001242487A1/en
Publication of WO2001089245A1 publication Critical patent/WO2001089245A1/fr

Links

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
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes

Definitions

  • Adaptive terminals are an example of the universal mobile terminal based upon a software-based technology platform.
  • an adaptive terminal having filters before conversion to intermediate frequency (IF) in the front end and a duplexing filter after an antenna (for Frequency Division Duplex (FDD) standards) capable of providing filtering operations in respect of all present telecommunications standards would be very complex and cumbersome in structure. Furthermore, any compromise with regard to complexity or size may impact upon the performance of the adaptive terminal. Therefore, even if it were possible to provide such filtering in the adaptive terminal, there would be no guarantee that the terminal would operate to a satisfactory standard in relation to future telecommunication standards.
  • IF intermediate frequency
  • FDD Frequency Division Duplex
  • the filtering module comprises at least one receiver filter, at least one transmitter filter.
  • the filtering module may also comprise at least one duplexing filter.
  • the terminal further comprises a second selection means for selecting at least one of the at least one transmitter filters.
  • the terminal further comprises a third selection means for selecting at least one of the at least one duplexing filters.
  • a data carrier comprising a filtering module specific to at least one communication standard, wherein the filtering module is removably coupleable with a communication transceiver.
  • a method of operating a communication terminal comprising: coupling a data carrier to the communication terminal, and powering-up the communication terminal, the method being characterised by the steps of: providing a filtering module with the data carrier, the filtering module being specific to at least one communication standard.
  • the method further comprises the steps of: selecting a communication network, and selecting filters within the filtering module to enable operation of the communication terminal in accordance with a communication standard from the at least one communication standard corresponding to the communication network selected.
  • the user when a user first purchases the communication terminal, the user is provided with a SIM card having the filtering module arranged to provide filtering operations to enable the handset to operate in accordance with the Global System for Mobile Communications (GSM), Personal Communications System (PCS) and IS-95 standards, thereby providing the user with the ability to use the communications terminal in Europe and the USA.
  • GSM Global System for Mobile Communications
  • PCS Personal Communications System
  • IS-95 IS-95
  • Figure 2 is a schematic diagram of a base station used in the cellular communications system of Figure 1 ;
  • Figure 4 is a schematic diagram of the terminal of Figure 3 in more detail.
  • Figure 5 is a flow diagram of the operation of the terminal of Figures 3 and 4.
  • a base station 102 supports a geographical area, or cell 104, the base station 102 being in communication with a mobile handset 106 via a radio frequency (RF) interface 108.
  • RF radio frequency
  • PSTN Public Switched Telecommunications Network
  • a fixed-line telephone 114 is also coupled to the PSTN 110.
  • the base station 102 ( Figure 2) comprises a base station antenna array 200 coupled to a base station duplexer 202.
  • a first terminal of the base station duplexer 202 is coupled to a base station microprocessor 204 via a base station transmitter chain 206.
  • a second terminal of the base station duplexer 202 is coupled to the base station microprocessor 204 via a base station receiver chain 208.
  • the base station microprocessor 204 is coupled to a base station RAM 210. Information is communicated to and from other parts of the cellular network (not shown) by means of an I/O interface 212 coupled to the base station microprocessor 204.
  • the handset 106 comprises a front end portion, P fe , and a baseband portion, P bb -
  • the front end portion P e comprises a broad-band receiver front end 310, a broad-band transmitter front end 312, and a data carrier, for example, a smart card such as a subscriber identity module (SIM) card 302.
  • SIM subscriber identity module
  • the SIM card 302 is adapted to have a first filter port 304, a second filter port 306 and a third filter port 308.
  • the second filter port 306 and the third filter port 308 are coupled to the broad-band receiver RF front end 310 and the broad-band transmitter RF front end 312.
  • the receiver front end 310 and the transmitter front end 312 are coupled to a base-band unit 314, constituting the base-band portion P bb -
  • the functionality of the receiver front end 310, the transmitter front end 312 and the base-band unit 314 is carried out by a microprocessor 315.
  • a display 316, the speaker unit 317, the keypad 318 and the microphone 320 are each coupled to the microprocessor 315.
  • An antenna array 300 is coupled to the SIM card 302.
  • the SIM card 302 contains a computer (not shown) and a memory chip (not shown).
  • the SIM card 302 is the size of a credit-card or can also take the form of a cut-down version to fit into smaller handsets.
  • the SIM card 302 contains subscriber parameters, holds personal data used by the subscriber, holds subscriber personal telephone numbers, identifies the subscriber to the network, provides security via a Personal Identification Number (PIN), retains information on the last cell in which the phone was operated, frequency of base channel and cell location, as well as stores short messages from the network.
  • PIN Personal Identification Number
  • the most important function of the SIM card 302 is to identify the subscriber to the network for various known purposes, for example, billing and determining privileges of the subscriber.
  • the SIM card 302 is essential for making non-emergency use of the handset 106.
  • the handset 106 comprises a superheterodyne transceiver comprising the broad-band receiver RF front end 310 having a down-conversion unit 400, for conversion to IF, IF filtering and conversion to base-band of received signals.
  • the superheterodyne transceiver also comprises the broad-band transmitter RF front end 312 having an up- conversion unit 402 for up-conversion and modulation of base-band signals.
  • the handset 106 comprises a superheterodyne transceiver, it should be appreciated that other transmitter, receiver or transceiver structures can be employed. However, any other transmitter, receiver or transceiver structures needs to be adaptable so that filters necessary for correct operation of the handset 106 in accordance with at least one given telecommunication standard can be easily replaced, preferably by a user of the handset 106.
  • the SIM card 302 includes a filter module comprising a first bank of filters 404, a second bank of filters 406 and a bank of duplexing filters 408.
  • the first bank of filters 404 comprises a first receiver filter 410, a second receiver filter 412 and a third receiver filter 414.
  • An input terminal of each of the first, second and third receiver filters 410, 412, 414 is coupled to a respective first, second and third output terminal of a first receiver switch 416.
  • An output terminal of each of the first, second and third receiver filters 410, 412, 414 is coupled to a respective first, second and third input terminal of a second receiver switch 418.
  • An output terminal of the second receiver switch 418 is coupled to the down-conversion unit 400 via the second filter port 306.
  • the second bank of filters 406 comprises a first transmitter filter 420, a second transmitter filter 422 and a third transmitter filter 424.
  • An input terminal of each of the first, second and third transmitter filters 420, 422, 424 is coupled to a respective first, second and third output terminal of a first transmitter switch 426.
  • An input terminal of the first transmitter switch 426 is coupled to the up-conversion unit 402 via the third filter port 308.
  • An output terminal of each of the first, second and third transmitter filters 420, 422, 424 is coupled to a respective first, second and third input terminal of a second transmitter switch 428.
  • An input terminal of the first receiver switch 416 is coupled to an output terminal of a low noise amplifier 428, an input terminal of the low noise amplifier 428 being coupled to an output terminal of a second duplexer switch 434, via the second filter port 306, and an output terminal of a power amplifier 430.
  • An input terminal of the power amplifier 430 is coupled to an output terminal of the second transmitter switch 428.
  • a first, second and third output terminal of the first duplexer switch 434 is respectively coupled to a first duplexing filter 436, a second duplexing filter 438 and a third duplexing filter 440.
  • An output terminal of the first, second and third duplexing filter 436, 438, 440 are respectively coupled to a first, second and third output terminal of a first duplexer switch 432, an output terminal of the first duplexer switch 432 being coupled to the antenna array 300 via the first filter port 304.
  • the base-band unit 314 is coupled to a subscriber parameter store 442 provided in the SIM card 302. Although not shown, the base-band unit 314 is also coupled to the first and second receiver switches 416, 418, the first and second transmitter switches 426, 428 and the first and second duplexer switches 432, 434 in order to control switching of filters.
  • a first bank of filters 404, a second bank of filters 406 and a bank of duplexing filters 408 are provided, each comprising a plurality of filters, one or more of the first bank of filters 404, the second bank of filters 406 and the bank of duplexing filters 408 can be replaced by an appropriate respective single filter.
  • the handset 106 is, in the above example, provided with banks of filters to enable the handset 106 to operate in accordance with more than one telecommunication standard.
  • a user possessing the handset 106 determines at least one telecommunication network in which the handset 106 is to be operated.
  • the user acquires the SIM card 302 having an appropriate filter module to enable operation of the handset 106 in the at least one telecommunication network.
  • the SIM card 302 is then brought into operative coupling (step 500) with the handset 106 according to any technique known in the art.
  • physical coupling of the SIM card 302 to the handset 106 via the first, second and third filter ports 304, 306, 308 enables the first bank of filters 404, the second bank of filters 406 and the bank of duplexing filters 408 to be coupled to the processor 315 to enable operation of the handset 106.
  • step 502 the user selects (step 502), for example via the keypad 318, the telecommunication network in which the handset 106 is to operate.
  • Software within the handset 106 then electronically switches (step 504) the first and second receiver switches 416, 418, the first and second transmitter switches 426, 428 and the first and second duplexer switches 432, 434 in order to connect a correct one of the first, second or third receiver filters 410, 412, 414 to the low noise amplifier 428 and the down-conversion unit 400, a correct one of the first, second and third transmitter filters 420, 422, 424 to the power amplifier 430 and the up-conversion unit 402, and a correct one of the first, second or third duplexing filters 436, 438, 440 between the low noise amplifier 428, the power amplifier 430 and the antenna array 300.
  • the handset 106 is able to transmit and receive signals (506) in the band of frequencies assigned to the selected telecommunication network operating in accordance with a corresponding telecommunication standard. If a different telecommunication standard is supported by the filtering module and is required by the user, a different network (if available) operating in accordance with the different telecommunication standard can be selected by repeating steps 502 and 404.
  • the handset 106 can be arranged to monitor an air interface in order to determine an available telecommunication standard.
  • the bank of duplexing filters 408 required for FDD standards and the second bank of filters 406 are not necessary and the broad-band receiver front end 310 can function correctly without the need for the bank of duplexing filters 408 and the second bank of filters 406.
  • the correct filters in the first bank of filters 404, the second bank of filters 406 and, if the available telecommunication standard is an FDD standard the bank of duplexing filters 408 can be switched in.
  • the display 316 can be arranged to display a message to the user to this effect and advise the user to obtain an appropriate SIM card from a Service Provider.

Abstract

Le grand nombre de systèmes de télécommunication existant rend nécessaire l'utilisation d'un terminal, connu sous le nom de terminal adaptable, pouvant fonctionner dans ces systèmes de télécommunication mobiles. Les terminaux courants sont des combinés de télécommunication cellulaire bibandes ou tribandes possédant un jeu de puces afin de faciliter le fonctionnement dans 2/3 des bandes passantes. Cependant, la réalisation d'un combiné capable de fonctionner dans au moins 4 systèmes de télécommunication est difficile, parce que le jeu de puces portant une telle configuration serait extrêmement complexe, de même que l'agencement de filtres dans les chaînes de réception et d'émission. Cette invention fournit donc une structure de combiné simplifiée qui est une structure bande large, la topologie du circuit et les paramètres de constitution permettent la fourniture de modules de filtre pouvant aisément être placés sur une carte SIM, ou dans un combiné. L'avantage d'un tel système est qu'il permet le filtrage d'éléments susceptibles d'être produits comme un module sans accroître la complexité globale de l'architecture du combiné.
PCT/EP2001/003128 2000-05-17 2001-03-20 Architecture de terminal adaptable WO2001089245A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001242487A AU2001242487A1 (en) 2000-05-17 2001-03-20 Adaptive terminal architecture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0011744.0 2000-05-17
GB0011744A GB2362544A (en) 2000-05-17 2000-05-17 Filtering module for multi-mode communiction terminal

Publications (1)

Publication Number Publication Date
WO2001089245A1 true WO2001089245A1 (fr) 2001-11-22

Family

ID=9891667

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/003128 WO2001089245A1 (fr) 2000-05-17 2001-03-20 Architecture de terminal adaptable

Country Status (3)

Country Link
AU (1) AU2001242487A1 (fr)
GB (1) GB2362544A (fr)
WO (1) WO2001089245A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088997A1 (fr) * 2004-03-10 2005-09-22 Philips Intellectual Property & Standards Gmbh Terminal mobile presentant un nombre reduit de composants
WO2006020793A2 (fr) * 2004-08-11 2006-02-23 Atc Technologies, Llc Utilisation de spectre de bande satellite pour une interference reduite ou minimale
US8270898B2 (en) 2001-09-14 2012-09-18 Atc Technologies, Llc Satellite-band spectrum utilization for reduced or minimum interference

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2849568B1 (fr) 2002-12-26 2005-04-29 Orange France Systeme et procede de gestion de ressources dans un terminal relie a un reseau de communication
EP1489750B1 (fr) * 2003-06-10 2008-03-05 Sony Ericsson Mobile Communications AB Réduction de diaphonie de fréquence radio

Citations (4)

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Publication number Priority date Publication date Assignee Title
EP0682458A2 (fr) * 1994-05-13 1995-11-15 Nec Corporation Dispositif de radio communication
EP0782358A2 (fr) * 1995-12-29 1997-07-02 Lucent Technologies Inc. Dispositif de communications mobiles
EP0829915A2 (fr) * 1996-09-11 1998-03-18 Lk-Products Oy Dispositif de filtrage d'antenne et appareil de communication radio à double mode
WO1999009771A1 (fr) * 1997-08-15 1999-02-25 Telefonaktiebolaget Lm Ericsson Convertisseur itinerant pour telephone mo0bile

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ATE532370T1 (de) * 1993-12-15 2011-11-15 Mlr Llc Drahtloses kommunikationssystem mit einer vielzahl von unabhängigen drahtlosen dienstleistungsnetzwerk
CA2154318A1 (fr) * 1994-08-25 1996-02-26 Richard David Poole Combine de radiotelephone adaptable
US6021332A (en) * 1997-04-01 2000-02-01 Motorola, Inc. Multi-mode radiotelephone having a multiple battery arrangement
US6138010A (en) * 1997-05-08 2000-10-24 Motorola, Inc. Multimode communication device and method for operating a multimode communication device
US5966667A (en) * 1997-07-14 1999-10-12 Motorola, Inc. Dual mode communication device and method
GB2329792A (en) * 1997-08-20 1999-03-31 Nokia Telecommunications Oy Identification signals enable a transceiver module to correctly configure itself to an attached functional module

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
EP0682458A2 (fr) * 1994-05-13 1995-11-15 Nec Corporation Dispositif de radio communication
EP0782358A2 (fr) * 1995-12-29 1997-07-02 Lucent Technologies Inc. Dispositif de communications mobiles
EP0829915A2 (fr) * 1996-09-11 1998-03-18 Lk-Products Oy Dispositif de filtrage d'antenne et appareil de communication radio à double mode
WO1999009771A1 (fr) * 1997-08-15 1999-02-25 Telefonaktiebolaget Lm Ericsson Convertisseur itinerant pour telephone mo0bile

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8270898B2 (en) 2001-09-14 2012-09-18 Atc Technologies, Llc Satellite-band spectrum utilization for reduced or minimum interference
WO2005088997A1 (fr) * 2004-03-10 2005-09-22 Philips Intellectual Property & Standards Gmbh Terminal mobile presentant un nombre reduit de composants
JP2007528656A (ja) * 2004-03-10 2007-10-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 構成要素を減じた移動端末
US7599713B2 (en) 2004-03-10 2009-10-06 Nxp B.V. Mobile terminal with reduced components
WO2006020793A2 (fr) * 2004-08-11 2006-02-23 Atc Technologies, Llc Utilisation de spectre de bande satellite pour une interference reduite ou minimale
WO2006020793A3 (fr) * 2004-08-11 2006-07-06 Atc Tech Llc Utilisation de spectre de bande satellite pour une interference reduite ou minimale

Also Published As

Publication number Publication date
GB2362544A (en) 2001-11-21
AU2001242487A1 (en) 2001-11-26
GB0011744D0 (en) 2000-07-05

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