WO1998040978A1 - Radio communication terminal for processing data of internet servers and electronic mail - Google Patents
Radio communication terminal for processing data of internet servers and electronic mail Download PDFInfo
- Publication number
- WO1998040978A1 WO1998040978A1 PCT/FR1998/000491 FR9800491W WO9840978A1 WO 1998040978 A1 WO1998040978 A1 WO 1998040978A1 FR 9800491 W FR9800491 W FR 9800491W WO 9840978 A1 WO9840978 A1 WO 9840978A1
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- WO
- WIPO (PCT)
- Prior art keywords
- data
- circuits
- adaptation
- terminal according
- processing means
- 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
Definitions
- Radiocommunication terminal for processing data from Internet servers and electronic mail
- Radiocommunication terminals and in particular portable terminals, are currently experiencing considerable development in their market due to the ease they offer in establishing communication with the called party without delay.
- These handsets also make it possible to transmit data through the GSM network, for example short messages, according to an operation in unconnected mode.
- the handset holder can insert a short message into a common network signaling channel, normally used to establish and break communications, and also receive a short response message.
- the signaling channel being in fact oversized to avoid any delay in signaling the various handsets, part of the excess capacity it offers is used to carry a little traffic there. It is therefore excluded to saturate it with longer messages. In addition, limited capacity affects response times.
- a terminal comprising in particular data adaptation circuits connecting a radio interface to a local link or interface circuit, allowing the connection of data processing circuits, whether these circuits are external, like those of 'a PC, or internal to the terminal.
- the adaptation circuits adapt, for example, the speed and format of the data to make the processing circuits and the radio network compatible.
- the adaptation circuits can therefore have two types of local interfaces: on the one hand, an external link interface for connecting a PC located at some distance, interface comprising circuits for changing the format of the data adding for example START bits , STOP allowing synchronization of their reception, at the end of the link, on the transmission and, on the other hand, an interface with the internal processing circuits.
- these are often application software layers, or processing, physically located in a central unit, or even more precisely a processor, which includes the adaptation circuits, so that the above problem remote transmission does not arise and that the data can keep its format. It is thus possible to envisage having a portable terminal comprising internal processing circuits allowing connection to data servers, for example of the INTERNET and electronic messaging.
- This duality of local interfaces for connecting processing means to adapter means therefore requires two sets of hardware and / or software to overcome the type of interface that will be used, that is to say so that the data are presented to the application layer of the processing means, internal or external, in a single format.
- the present invention aims to overcome the drawbacks mentioned above.
- the invention relates to a radiocommunication terminal comprising radio interface means, for accessing a radiocommunication network, connected to data adaptation means, for external processing of this data after conversion to a determined format, internal processing means directly connected to the adaptation means and transformation means for adapting to said format the data transmitted between the adaptation means and the internal processing means.
- the internal processing means being directly connected to the adaptation means, there is thus, to access the adaptation means, a path, or a mode, other than that provided for an external treatment and the transformation means can therefore somehow so simulate, vis-à-vis their environment in particular software, format conversion means for a link with the outside.
- the two sets indicated above of interfaces are limited to the function of access to the adaptation means, therefore are of reduced size, and have the same interfaces with the other upper software layers so that these remain unique, the choice of interface set corresponding to an internal local link not being perceptible to them.
- the te ⁇ riinal may only provide for internal treatment, with in particular the software layers similar to those of external processing, with no means of format conversion.
- FIG. 1 is a block diagram of the terminal, connected to a PC, and
- FIG. 2 is a time diagram explaining the sequencing of the terminal, as a function of time t on the abscissa.
- the terminal shown, here a mobile radiotelephony handset 11, 10, 20, 30, comprises a central unit 10 connected, here bidirectionally, on the one hand, to a circuit 30 with modem 35 for radio access interface in transmission / reception to a radiocommunication network 39, here the GSM radiotelephony network allowing the transmission of data, and, on the other hand, to a local transmission interface circuit 11, here in the V24 standard, connected to a PC 40 by a link 49, in order to offer it access to the GSM network 39.
- the central unit 10, and more precisely here the microprocessor 9 which it comprises, comprises a set 95 of data processing managing an application, here data exchanged through the network 39 with servers of the INTERNET, assembly 95 which is directly connected to adaptation assemblies 86 and 96, here located in the microprocessor 9. More specifically, the assembly 95 comprises two circuits 951 and 952 tra nsfert and data transformation connecting it respectively to two homologous circuits 89 and 99 of the respective sets 86 and 96.
- the block 20 connected to the radio circuit 30 shows diagrammatically the conventional numbering and voice communication circuits, comprising in particular a keyboard, a microphone, a loudspeaker and their interface circuits.
- the central unit 10 manages the block 20, by links not shown.
- the central unit 10 comprises four buffer registers 31, 32, 33 and 34 and a time base 8, comprising an oscillator 81 followed by frequency dividers 82, controlling the microprocessor 9.
- the latter comprises four buffer registers transit 91, 92, 93 and 94, the two sets of calculation, data adaptation, 86 and 96, a set 12 of signaling processing with a circuit 13 for conventional telephone signals, in circuit mode, and a circuit 14 dealing with packet mode signaling, both connected to a circuit 15 managing GSM signaling (level 3 of international standardization for OSI open systems).
- a data transmission channel to be transmitted on the network 39 starts from the interface circuit V24 and ends at the radio circuit 30 crossing, in the order of propagation of the data, the transit register 91, the buffer register 31, the adaptation assembly 86, the buffer register 32 and finally the transit register 92.
- the adaptation assembly 86 comprises a circuit 87 for processing telephone type signaling data and a circuit 88 for MINITEL type signaling data.
- the adaptation assembly 96 receiving the data coming from the network 39, likewise comprises circuits 97 and 98 functionally homologous to the respective circuits 87 and 88.
- separate integrated circuits could have been provided for the assemblies 86, 95, 96, for example circuits on demand (ASIC) or a signal processor (DSP) controlled by the microprocessor 9.
- the integration of data adaptation into the GSM handset thus avoids the need for a microprocessor card connected to it to carry out this adaptation.
- the total volume, and consumption, of the material thus remains limited as much as the central unit 10, or microprocessor 9, unique manages itself, therefore in a centralized, multitasking, the sequencing of its tasks (like 86, 95 , 96), without the need to connect an external microprocessor adaptation card, therefore without loss of time corresponding to the negotiations which would be necessary in such a case in the decentralized system which would then be carried out.
- a radio data reception channel starts from radio circuit 30, crosses circuits 93, 33, 96, 34, 94 and ends at circuit 11.
- the assembly 10 For a data transmission between the PC 40 and another data transmission device connected to the GSM network 39, directly or through another network, the assembly 10 ensures the adaptation of the data exchanged between the two devices, in connected mode , so that they can be transmitted over the GSM network 39.
- a user controls, from the PC 40, the issue of the number phone number of the called device.
- the number transmitted on the link 49 is received by the circuit 13 through the circuits 11 and 91.
- the central unit 10 analyzes for this purpose the signaling received from the PC 40 and the pointer to the circuit 13 or the circuit 14 according to its nature: telephone, circuit mode, or MINITEL type, packet mode. This number is transmitted to circuit 15 which manages the establishment of GSM communication, and in particular ensures the functions of the level 3 layer in the seven layers of the international OSI classification.
- the circuit 15 exchanges, by the modem 35, 0 a sequence of signaling messages with the GSM network 39 and adapts this sequence according to the signaling messages received from the latter in response to each message, in order to manage the establishment and termination of a communication, that is to say the physical link carrying the application logic link between the two 5 data processing devices.
- the circuit 15 also controls the modem 35 for connection to the network 39, in the sense that it can configure it according to determined parameters, such as for example its speed and its modulation frequency.
- the circuits 87 and 97 5 ensure in particular the adaptation of the data between the interface V24 and the GSM network 39 as regards their presentation format, respectively in transmission from the PC 40 to the radio circuit 30 and in reception, this one to the PC 40.
- This is the RAI 1 function of the ETSI recommendation 04.21, concerning the assembly / 0 disassembly of VI 10 frames of 36 or 60 useful bits. It is understandable that other level 2 adaptation standards, such as ECMA 102, are possible.
- the V24 interface transmits in asynchronous mode at 2.4, 4.8 or 9.6 kb / s, while, on the GSM 39 network side, the bits are exchanged at a determined synchronous rate of 3.6, 6 or even 12 5 kb / s.
- Circuit 88 performs the function RA0 of recommendation 04.21, that is to say the rate adaptation, between asynchronous data and synchronous data, to the nearest higher speed 2 n x 600 bits / s (n: positive integer), by stuffing or deletion of "stop" bits, the circuit 98 performing the opposite operation.
- Communications by call from the PC 40 from a device connected to the radio network 39 can likewise be established.
- the assembly 10 serves as an adaptation circuit (level 2) and for management of the communication protocols (level 3) for the establishment of the radio links transmitting the data through the GSM network 39.
- the GSM terminal, the network 39 and another similar GSM terminal connecting the other data transmission device are transparent with regard to the application, or processing, (level 7 software layers).
- the assembly 10 comprises, in addition to the adaptation and protocols for managing the radio links, functions relating to OSI layers exceeding level 3, and in particular deals with at least part of the application relating to the data transmitted. 5
- the assembly 95 which replaces the PC 40 and the circuit 11, thus comprises the OSI layers of level higher than 3 to process applications (level 7) with data transmitted on the network of the INTERNET, connected to the GSM network 39.
- the keyboard of the assembly 0 and a display not shown are controlled by the microprocessor 9 under the command of a man-machine relationship software. It is thus possible to display pages provided by the servers and navigate in the INTERNET network by calling the chosen server. 5
- the detailed routing of the data for the elementary stages through which they pass will be specified below, then their sequencing, starting with the example of the radio link with the PC 40.
- the bits sent by the PC 40 on the V24 link referenced 49 are received in the circuit 11 in the form of serial bytes surrounded by START and STOP bits and temporarily stored in a UART circuit of the interface 11.
- the interface circuit 11 emits an interrupt towards the microprocessor 9 and the latter is released as well as the bus.
- the UART of the circuit 11 then transmits, at the input of the transmission channel, the byte considered on the bus and the transit register 91 stores it temporarily to retransmit it to the buffer register 31, which serves as an input buffer for data blocks which will be processed by the assembly 86.
- the microprocessor 9 which manages the writing, or recharging, and the reading, or emptying, can detect that the sufficient filling threshold has been reached.
- the microprocessor 9 then transfers the data block from the register 31 into a working register, not shown, of the assembly 86.
- Software controls the microprocessor 9 to execute the task of adapting the data indicated above and thus provide a VI 10 frame which is temporarily stored in a local output working register, not shown. This is then emptied into the buffer register 32 in order to free, for other tasks, the working registers of the microprocessor 9.
- the content of the buffer register 32 is subsequently transmitted to the GSM radio modem 35 by a transfer task in two stages, passing through the transit buffer register 92, according to the process already explained for register 91.
- the oscillator 81 of the time base 8 oscillates on a frequency determined as a function of the rate of data transmission on the GSM network 39.
- This determined frequency is not necessarily equal to this rate, but it has a relationship with it, integer or fractional, constant.
- the latter is connected at the input to the radio interface 30 to receive from modem 35 the rhythm of the GSM network 39 and to control it.
- the rhythm of the network 39 is in practice defined on the basis of the frequency of the radio carrier which controls the oscillator 81 at this frequency.
- the time base 8 also supplies high frequency (MHz) clock signals controlling the rhythm of the microprocessor 9 and in particular the adaptation assemblies 86 and 96.
- MHz high frequency
- the pulses S are commands for synchronizing the buffer registers 32 and 33 with the GSM network 39.
- the microprocessor 9 transfers data from a block V110 from the register 32 to the modem 35, by the register of transit 92.
- the modem 35 comprises, in a conventional manner for the GSM network, a buffer register, not shown, making it possible to store two blocks of data, which will be interleaved with the addition of redundancy during their radio transmission, buffer register which therefore makes it possible to ensure regular transmission of bit packets between the successive receptions of the data blocks originating from register 32.
- the radio data received by the modem 35 are transferred to the buffer register 33.
- This synchronization by the pulses S thus avoids any risk of transmission error between the radio interface 30 and l 'set 10.
- the buffer registers 31 to 34 which, functionally, are in fact part of the adapter means (86, 96), have a size sufficient to contain several blocks of data in order to tolerate fluctuations in the waiting time of the availability of the adaptation assemblies 86 and 96 (availability of the multitasking microprocessor 9 to perform the tasks symbolized by the assemblies 86 and 96).
- the data flow V24 must, on average, be adapted to the data flow VI 10, therefore to the rhythm of the GSM network 39, which translate the pulses S and M.
- the pulses M at period N five times lower than the average period of the pulses S, defined a period N corresponding to a transmission of an integer number of bytes, independently of the choice of speed among those provided on the GSM network 39, thus making it possible to process the data in the form bytes. Therefore, it is preferred here to synchronize the overall operating cycle of all of the transmission chains or channels 11, 91, 31, 86, 32, 92, 30 and reception 30, 93, 33, 96, 34, 94 , 11 on the pulses of pattern M, with also, in this global cycle, shorter cycles for for example the data transfers, according to the periodicity of the pulses S.
- a pattern of five blocks of data to be transmitted is processed in the set 86, and likewise in reception in the set 96 to in particular verify the integrity of the data bytes received from the network 39.
- Five pulses S thus control, in transmission and in reception, five successive transfers of blocks forming in total a pattern.
- the data is thus successively transmitted from circuit 11 V24 interface to the buffer register 31 where they are temporarily stored, and then extracted in synchronism with the network 39 by the pulses S to be then adapted by the VllO coding, adapted to their long-distance transmission, in the set 86, and transmitted to the radio circuit 30 through the output buffer buffer register 32.
- the data in V11O format are successively transferred from the radio circuit 30 to the buffer register 33 where they are temporarily stored, and then extracted by the pulses S in synchronism with the network 39 to be adapted (96) by a decoding of the V11O format and transmitted to the output buffer register on reception 34 then to the circuit 11 and to the PC 40, which adapts the format and the bit rate on the PC 40 side.
- the byte by byte transfers on the bus can be distributed in the period N of the pulses M, that is to say possibly discontinuous, insofar as the expected average flow of data has elapsed over this period N.
- the adaptation circuits 86 and 96 must carry out this adaptation of a pattern in this same period N of the pulses M. In short, it is an operation in real time.
- the direct link takes the common data bus, that is to say that the circuits 951 and 952 are in fact a single circuit used in time sharing.
- the transformation circuits 89, 951, 952, 99 are arranged to detect the free state of the data bus, therefore connecting, in particular, the internal processing assembly 95 and the adaptation circuits 86, 96 and to manage a transfer of data between them.
- the microprocessor 9 here manages the transformation circuits 89, 951, 952, 99 as a background task.
- These transformation circuits are in this example exempt circuits for transmitting the interruption of other tasks, that is to say that they cannot transmit priority execution requests over other tasks.
- the assembly 95 is directly connected to the adaptation circuits 86 and 96 by the fact that the transformation circuits 89, 951, 952 and 99 allow a direct connection, or access, in a single step, without going through a step of transit through a transit register, like 91, of the microprocessor 9.
- the transformation circuits 89, 951, 952 and 99 allow a direct connection, or access, in a single step, without going through a step of transit through a transit register, like 91, of the microprocessor 9.
- the pairs of transformation circuits 89, 951 and 99, 952 thus directly transfer the data while transforming them into the desired format to simulate a transmission through the external transmission interface circuit (11), in order to maintain compatibility with the circuits and software (86, 95, 96) that they link.
- the set 95 allows the exchange of electronic mail with message centers connected to the Internet network.
- the set 95 includes software comprising an SMTP protocol (Simple Message Transfer Protocol) allowing the deposit of messages in recipient mailboxes, belonging to message centers.
- the terminal can retrieve the messages deposited in the mailbox which it has in one of the message centers, this by implementing, in this example, a POP protocol (POste Protocol) version 3 or still an IMAP protocol (Interactive Message Access Protocol).
- POP protocol POste Protocol
- IMAP protocol Interactive Message Access Protocol
- the speech circuits of the GSM terminal are also connected to the assembly 95 in order to insert into the text messages, speech signals having been digitized by conventional coding circuits, not shown. These digitized signals are transmitted as an "attachment" to the message, as required by the messaging standard. In the opposite direction, a decoder reproduces the voice attachments on a terminal listener.
- the assembly 95 includes the OSI layers allowing it to process facsimile applications. It can thus transmit with e-mail messages, as an attachment, faxes and receive them.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98914895A EP0966803A1 (en) | 1997-03-12 | 1998-03-11 | Radio communication terminal for processing data of internet servers and electronic mail |
AU69219/98A AU6921998A (en) | 1997-03-12 | 1998-03-11 | Radio communication terminal for processing data of internet servers and electronic mail |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9702931A FR2760917B1 (en) | 1997-03-12 | 1997-03-12 | RADIO COMMUNICATION TERMINAL FOR DATA PROCESSING OF INTERNET SERVERS IN PARTICULAR |
FR97/02931 | 1997-03-12 | ||
FR9707036A FR2760918B1 (en) | 1997-03-12 | 1997-06-06 | RADIOCOMMUNICATION TERMINAL FOR THE PROCESSING OF DATA, INTERNET SERVERS AND ELECTRONIC MESSAGING IN PARTICULAR |
FR97/07036 | 1997-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998040978A1 true WO1998040978A1 (en) | 1998-09-17 |
Family
ID=26233388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/000491 WO1998040978A1 (en) | 1997-03-12 | 1998-03-11 | Radio communication terminal for processing data of internet servers and electronic mail |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0966803A1 (en) |
AU (1) | AU6921998A (en) |
FR (1) | FR2760918B1 (en) |
TW (1) | TW385597B (en) |
WO (1) | WO1998040978A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0930793A1 (en) * | 1997-12-22 | 1999-07-21 | Texas Instruments Inc. | Mobile equipment with a plurality of processors |
GB2364860A (en) * | 2000-02-03 | 2002-02-06 | Nec Corp | Radio terminal and data processing system having an external server |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0618746A1 (en) * | 1993-03-31 | 1994-10-05 | Alcatel Mobile Communication France | Station for a digital radio-communication network with means for exchanging speech signals and means to exchange data signals |
US5367563A (en) * | 1992-04-06 | 1994-11-22 | Spectrum Information Technologies, Inc. | Programmable universal modem system and method for using the same |
EP0630141A2 (en) * | 1993-01-08 | 1994-12-21 | Multi-Tech Systems Inc | Computer-based multifunction personal communications system |
EP0632636A1 (en) * | 1993-05-21 | 1995-01-04 | Hagenuk Telecom GmbH | Device for connection |
-
1997
- 1997-06-06 FR FR9707036A patent/FR2760918B1/en not_active Expired - Fee Related
-
1998
- 1998-03-11 WO PCT/FR1998/000491 patent/WO1998040978A1/en not_active Application Discontinuation
- 1998-03-11 EP EP98914895A patent/EP0966803A1/en not_active Ceased
- 1998-03-11 AU AU69219/98A patent/AU6921998A/en not_active Abandoned
- 1998-03-12 TW TW87103614A patent/TW385597B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5367563A (en) * | 1992-04-06 | 1994-11-22 | Spectrum Information Technologies, Inc. | Programmable universal modem system and method for using the same |
EP0630141A2 (en) * | 1993-01-08 | 1994-12-21 | Multi-Tech Systems Inc | Computer-based multifunction personal communications system |
EP0618746A1 (en) * | 1993-03-31 | 1994-10-05 | Alcatel Mobile Communication France | Station for a digital radio-communication network with means for exchanging speech signals and means to exchange data signals |
EP0632636A1 (en) * | 1993-05-21 | 1995-01-04 | Hagenuk Telecom GmbH | Device for connection |
Non-Patent Citations (1)
Title |
---|
GESSLER S ET AL: "PDAs as mobile WWW browsers", COMPUTER NETWORKS AND ISDN SYSTEMS, vol. 28, no. 1, December 1995 (1995-12-01), pages 53-59, XP004001210 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0930793A1 (en) * | 1997-12-22 | 1999-07-21 | Texas Instruments Inc. | Mobile equipment with a plurality of processors |
GB2364860A (en) * | 2000-02-03 | 2002-02-06 | Nec Corp | Radio terminal and data processing system having an external server |
GB2364860B (en) * | 2000-02-03 | 2002-05-01 | Nec Corp | Radio terminal and information processing system |
AU771509B2 (en) * | 2000-02-03 | 2004-03-25 | Nec Corporation | Radio terminal, information processing system using radio terminal, and external processing terminal for assisting radio terminal |
US6996417B2 (en) | 2000-02-03 | 2006-02-07 | Nec Corporation | Radio terminal, information processing system using radio terminal, and external processing terminal for assisting radio terminal |
Also Published As
Publication number | Publication date |
---|---|
TW385597B (en) | 2000-03-21 |
AU6921998A (en) | 1998-09-29 |
FR2760918B1 (en) | 1999-05-07 |
FR2760918A1 (en) | 1998-09-18 |
EP0966803A1 (en) | 1999-12-29 |
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