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WO2004088877A2 - Procede de transmission de donnees - Google Patents

Procede de transmission de donnees Download PDF

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Publication number
WO2004088877A2
WO2004088877A2 PCT/EP2004/000635 EP2004000635W WO2004088877A2 WO 2004088877 A2 WO2004088877 A2 WO 2004088877A2 EP 2004000635 W EP2004000635 W EP 2004000635W WO 2004088877 A2 WO2004088877 A2 WO 2004088877A2
Authority
WO
WIPO (PCT)
Prior art keywords
data
transmission
radio channel
terminal
channel
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/EP2004/000635
Other languages
German (de)
English (en)
Other versions
WO2004088877A3 (fr
Inventor
Hyung-Nam Choi
Michael Eckert
Martin Hans
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2004088877A2 publication Critical patent/WO2004088877A2/fr
Publication of WO2004088877A3 publication Critical patent/WO2004088877A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2618—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]

Definitions

  • the invention relates to a method for transmitting data on a common radio channel according to the preamble of claim 1.
  • the physical random access channel or "Physical Random Access Channel” PRACH is a so-called common channel or “common channel” on which in principle all terminals within a cell share for the transmission of
  • Universal Terrestrial Radio Access Network can be received.
  • the sending terminal waits for a confirmation from the UTRAN via the secondary common control physical channel or "Secondary Common Control Physical Channel” S-CCPCH as a separate return channel.
  • the UTRAN checks all received data packets for possible transmission errors and sends the respective test result to the terminal via the S-CCPCH, whereby a positive confirmation or ACK (acknowledgment) is transmitted for an error-free received data packet, or a negative confirmation for an incorrectly received data packet NACK (Negative Acknowledgment).
  • the terminal If the terminal receives a message that a certain data packet was transmitted incorrectly, the terminal repeats the transmission for the incorrectly sent data packet on the PRACH after randomly selected waiting times. Randomness minimizes the risk of renewed access collisions. As long as the number of terminals accessing the same PRACH in a cell is moderate, the slotted ALOHA access method works well. But as soon as the number of
  • Terminals increases, the risk of an increasing collision risk increases with the traffic load in the cell, which is further increased by the retrans ission as a result of faulty data transmissions. This leads to a delay in data transmission or to a deterioration in data throughput and to additional interference in the uplink. In the worst case, only collided data packets are transmitted over the channel, so that the data throughput drops to zero.
  • This transmission frame length can be selected depending on the quality of the radio channel. Depending on the type of quality determination, for example, promptly or averaged, the radio operation can be optimized in a way adapted to the respective transmission conditions. So in the case of poor channel quality
  • Transmission frame length can be chosen shorter.
  • the efficiency of packet data transmission can be further increased by also using multicode transmission, i.e. the use of multiple spreading codes for
  • the number of spreading codes can also be adapted to the channel quality in order to adapt to the transmission conditions.
  • Such a method is particularly suitable for packet-oriented transmission since the conditions can be reset for individual packets or parts of packets.
  • a packet data transmission it can be provided that a data part and a control part for control information are provided in a packet.
  • a different or the same number of spreading codes can be provided for these parts.
  • a base station or a terminal which is suitable for carrying out the method described above or an embodiment thereof has, in addition to one
  • Transceiver device on a suitably set up processor unit.
  • a communication network in which one of the methods described above can be carried out comprises at least one such terminal and one such base station.
  • 1 shows a schematic sequence of a data transmission on the PRACH, in particular in the UMTS-FDD mode
  • Figure 2 shows a frame structure for the PRACH message part according to the prior art
  • Figure 3 shows a frame structure for the S-CCPCH according to the prior art
  • Figure 4 shows a subframe structure with a
  • FIG. 5 shows a subframe structure with a transmission time length TTI of two time slots
  • FIG. 6 shows a subframe structure with transmission time length TTI of three time slots
  • FIG. 7 shows a subframe structure with transmission time length TTI of four time slots
  • Figure 8 with a subframe structure
  • FIG. 9 shows a subframe structure for the PRACH
  • FIG. 10 shows a subframe structure for the PRACH
  • FIG. 11 shows a subframe structure for the S-CCPCH in the
  • FIG. 12 shows a subframe structure in the case of a single code transmission on the PRACH message part
  • Figure 13 shows a subframe structure in the case of a
  • FIG. 14 shows a subframe structure in the case of a
  • Figure 1 shows a schematic diagram of a transmission
  • Figures 2 and 3 the frame structure for the PRACH message part and the S-CCPCH.
  • Figures 4 to 8 show subframe structures with different transmission time lengths.
  • Figures 9 to 11 relate to the subframe structure with regard to single code or multicode transmissions.
  • FIGS. 12 to 15 again show the subframe structures with regard to single or multicode transmissions, but for selected codes.
  • a communication system or communication network is a structure for exchanging data.
  • This can be, for example, a cellular mobile radio network, such as the GSM network (Global System of Mobile Communications) or the UMTS network (Universal Mobile Telecommunications System).
  • Terminals and base stations are generally provided in a communication system and connect to one another via a radio interface.
  • GSM Global System of Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • the terrestrial radio access network or "Universal Terrestrial Radio Access Network" UTRAN is the radio-technical part of a UMTS network in which, for example, the radio interface is also made available.
  • a radio interface is always standardized and defines the entirety of the physical and protocol specifications for data exchange, for example the modulation method, the bandwidth, the frequency swing, access methods, security procedures or switching techniques.
  • the UTRAN thus comprises at least base stations and at least one RNC.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • a base station is a central unit in a communication network, which in the case of a cellular
  • the base station provides the air interface between the base station and the terminal. It handles the handling of radio operations with the mobile participants and monitors the physical radio connection. In addition, it transmits the user and status messages to the terminals.
  • the base station has no switching function, only one
  • a base station comprises at least one transmitting / receiving unit.
  • a terminal can be any communication terminal via which a user communicates in a communication system.
  • mobile terminals such as mobile phones or portable computers with a radio module are included.
  • a terminal is often also referred to as a “mobile station” (MS) or in UMTS “user equipment” (UE).
  • MS mobile station
  • UE user equipment
  • the downlink or “downlink” (DL) denotes the direction of transmission from the base station to the terminal.
  • the uplink or “uplink” (UL) denotes the opposite direction of transmission from the terminal to the base station.
  • a channel is a sub-area of an available total transmission capacity.
  • a wireless communication path is referred to as a radio channel.
  • UMTS In a mobile radio system, for example UMTS, there are two types of physical channels for the transmission of data: permanently assigned channels or "dedicated channels” and shared or “common channels". With dedicated channels, a physical resource is only used for
  • Common channels can provide information transmitted, which are intended for all terminals, for example the primary common physical control channel or "Primary Common Control Physical Channel” (P-CCPCH) in the downlink, or all terminals share a physical resource by each terminal only for a short time may use. This is the case, for example, with the physical random access channel or "physical random access channel” (PRACH) in the uplink.
  • P-CCPCH Primary Common Control Physical Channel
  • PRACH physical random access channel
  • the data is also subjected to a scrambling or "scrambling" procedure to identify a specific connection.
  • scrambling codes Depending on the direction of transmission, the type of channel and the radio transmission technology, different types of scrambling codes or "scrambling codes" are used. While a bit from a data sequence is usually referred to as a symbol, a bit of a bandwidth-spread sequence is referred to as a chip.
  • the data transmission via the radio channel generally takes place in a predetermined time structure, the transmission frame, which is often also referred to as a frame.
  • a transmission frame thus represents the periodic basic time structure with which data is physically transmitted.
  • UMTS a frame is 10 ms.
  • temporal substructures for example subframes or "subframes"
  • subframes for example, one could define a subframe in UMTS, which should include three time slots, so that a frame is then composed of 5 subframes.
  • Transmission time interval denotes the length of time over which data that were encoded together due to a scrambling, e.g. a so-called “scrambling” or “interleaving”, spread out over time.
  • a TTI can be specified in relation to time slots.
  • the transmission time interval in which data from the medium access layer or medium access layer (MAC) (OSI layer 2, OSI: Open System Interconnection) to the physical layer (OSI layer 1) in the form of so-called transport blocks ( Combination of data packets of fixed length) are transmitted.
  • the transmission time interval in which the data are then physically transmitted via the air interface can be designated, for example.
  • TTI 40 ms
  • data is sent every 40 ms from the MAC layer to the physical layer.
  • this data is then transmitted by the physical layer within 4 frames.
  • the PRACH and the S-CCPCH in FDD mode are specified as follows:
  • the PRACH is specified for the uplink transmission of burst-like data traffic up to 120 kbps (kilobits per second) as a gross data rate.
  • the PRACH consists of a preamble part and a message part, via which the useful information or "pay load" is transmitted.
  • all terminals within a UMTS cell can use the PRACH together to transmit signaling information and user data.
  • the access of the terminals to the PRACH is regulated according to the random procedure "Slotted ALOHA", in which each
  • the Terminal is only allowed to send data on the PRACH at the beginning of specified time intervals.
  • the random access transmission consists of one or more preambles with a length of 4096 chips and the actual message in the message section.
  • Transmission time lengths of 10 or 20 ms Transmission Time Interval (TTI) are defined for the PRACH message part.
  • TTI Transmission Time Interval
  • the message on the PRACH message part only has to be transmitted once, namely when the data transmission procedure described in FIG. 1 does not experience the described detection difficulties.
  • the PRACH message part is scrambled or "scrambled" for identification with a specific scrambling code with a length of 38400 chips, which corresponds to a length of 10 ms.
  • the scrambling or "scrambling” is used to identify the data so that different connections or data transmissions can be separated.
  • FIG. 1 schematically shows a sequence of a random access data transmission to be confirmed between a terminal UE and the UTRAN comprising at least one base station shown. This process can run simultaneously for several UE terminals.
  • the data can be a message, for example.
  • the arrows from the UE terminal to the UTRAN indicate a transmission on the PRACH, the arrows from the UTRAN to the UE terminal indicate a transmission on the S-CCPCH or AICH.
  • S-CCPCH data, i.e. signaling information or user data, is sent to the terminal via the air interface. Transmission times of 10, 20, 40 or 80 ms are also defined as TTI for the S-CCPCH.
  • the S-CCPCH is also scrambled after the spread, this time with a line-specific first or “primary” or a second scrambling code or “secondary scrambling code” with a length of 38400 chips, which in turn corresponds to a time of 10 ms.
  • a second scramble code is required if the number of first scramble codes is insufficient for the number of connections in the cell.
  • the data from higher protocol layers is transmitted via transport channels, for example the
  • Forward access channel FACH and / or the paging channel PCH are transmitted to the physical layer, where they are then mapped or mapped onto the physical channel S-CCPCH.
  • the random access data transmission method shown in Figure 1 now includes the following steps:
  • the terminal UE sends a randomly selected preamble of 4096 chips in length to the UTRAN. If the UTRAN can correctly detect the preamble, it sends a positive confirmation (ACK) on the access indicator channel or "acquisition indicator" Channel "(AICH) to the UE terminal. If the UTRAN cannot correctly detect the preamble, it sends a negative confirmation (NACK) on the AICH to the UE terminal. It is now assumed that the UTRAN does not correctly match the preamble sent by the UE terminal can detect.
  • ACK positive confirmation
  • AICH acquisition indicator
  • NACK negative confirmation
  • a NACK on the AICH is thus sent back to the UE terminal.
  • the terminal UE After a randomly selected waiting time, the terminal UE sends a new, randomly selected preamble to the UTRAN. This preamble is now a little higher
  • the transmission power for the following PRACH message part is set on the basis of the transmission power of the successfully sent preamble.
  • the terminal UE sends the message on the PRACH message part to the UTRAN as soon as possible and waits for a confirmation via the S-CCPCH.
  • a message for example signaling information or user data, is sent to the UTRAN via the air interface.
  • the message is transmitted from higher protocol layers via the RACH transport channel to the physical layer, where it is then mapped or mapped onto the physical PRACH message part.
  • FIG. 2 shows the frame structure for the PRACH message part as it is in the prior art is used.
  • the radio frame or radio frame of the message part comprises a time of 10 ms. This radio frame is divided into 15 time slots S # 0 to S # 14. Each time slot contains a data part D and a control part C.
  • the control part is in turn divided into a pilot section P and a transport format combination indicator section TFCI. Only specific control information of the physical layer is sent on the control part, such as “pilot bits” for channel estimation and “TFCI bits” as a transport format combination indicator for the data part.
  • the actual message is sent from the RACH transport channel on the data part.
  • the number of data bits transmitted on the control and data part per frame or time slot Npiio, N TF c ⁇ , N Da ta results from the spreading factor (SF) of the OVSF spreading code used (OVSF Orthogonal Variable Spreading Factor) and the im Uplink used modulation type BPSK (Binary Phase Shift Keying).
  • the control part is always spread with a spreading code with a spreading factor of 256, so that 10 bits in one
  • Time slot of length 2560 chips are transmitted.
  • Spreading codes with a spreading factor of 32, 64, 128 or 256 are possible for the data part. This means that at least 10 bits with a spreading factor of 256 to a maximum of 80 bits with a spreading factor of 32 can be transmitted per time slot with a length of 2560 chips. This is also shown in Table 1 below.
  • Table 1 Number of bits per frame or time slot in
  • the data part and the control part are transmitted via a so-called IQ code multiplexing, ie the data part D is transmitted to the I branch (real branch) and the control part C to the Q branch (imaginary branch), which are each out of phase with one another are. Since the imaginary branch and the real branch do not interfere with each other, the values can be sent in parallel.
  • FIG. 3 shows the corresponding frame structure of a radio frame of the S-CCPCH as used in the prior art.
  • the length of the radio frame is designated Tf and is 10ms.
  • the radio frame is composed of 15 time slots S # 0 to S # 14. Each time slot has a duration of 10/15 ms.
  • the following information is sent in each time slot of length 2560 chip: a) the TFCI bits as a transport format combination indicator for the actual data bits, which represent specific control information of the physical layer. b) the pilot bits for channel estimation; and c) the data bits of the forward access channel FACH or paging channel PCH transport channels.
  • the number of bits transmitted on the S-CCPCH per frame or time slot results from the spreading factor of the OVSF spreading code used and the modulation type QPSK (Quarternary Phase Shift Keying) used in the downlink.
  • Spreading codes with a spreading factor SF of 4, 8, 16, 32, 64, 128 or 256 are possible for the S-CCPCH. This means that at least 20 bits with a spreading factor of 256 to a maximum of 1280 bits with a spreading factor of 4 can be transmitted per time slot with a length of 2560 chips.
  • Table 2 Number of bits per frame or time slot depending on the stimulus factor on the S-CCPCH
  • Embodiments described in which the frame has been shortened compared to the frame format used previously.
  • the examples initially relate to a single code transmission, but can also be used for a multicode transmission.
  • 4 to 8 show a subframe structure or subframe structure with a transmission time length or transmission time interval TTI of one, two, three, four or five time slots.
  • TTI transmission time length or transmission time interval
  • Time slot T s iot is always 2560 chips, in which N D ata user data bits are transmitted in each case.
  • FIG. 9 shows the subframe structure for the PRACH message part in the case of a single code transmission.
  • the message part contains a data part D and a control part C.
  • the data part D is by means of a OVSF spreading codes, which are denoted by C d , sF, ⁇ , spread.
  • the control part C is also spread by means of a spreading code, which is designated C , SF, I in the drawing. Both codes are transferred from the terminal to the UTRAN using I / Q code multiplexing.
  • T f 1 time slot or "ti e slot"
  • Figure 12 shows the subframe structure on the PRACH message part.
  • An OVSF spreading code with SF 64, ie C c , 6 4 , ⁇ , is sufficient to transmit the data on the control part.
  • An OVSF spreading code with a spreading factor of SF 32, ie Cd, 32.1, is sufficient for the data part.
  • the first letter in the indexing of the codes indicates whether it is used for data D or control information C, the second number denotes the spreading factor and the third number the number of the spreading code used in the OVSF code tree. Both codes are transmitted from the UE terminal to the UTRAN using I / Q code multiplexing.
  • Figure 13 shows the subframe structure on the S-CCPCH.
  • the UMTS standard currently does not support multicode transmission for the control and data parts of the PRACH.
  • a multicode transmission is a transmission in which individual data packets or subsets of the data are assigned different spreading factors.
  • the UMTS standard does not currently allow multicode transmission for the S-CCPCH either.
  • TTI 1 time slot
  • Figure 14 shows the subframe structure on the PRACH message part.
  • FIG. 10 shows the subframe structure for the PRACH message part in the case of a multicode transmission.
  • N codes of the same spreading factor, which are denoted in the drawing by C d , sF, ⁇ to C C , SF , N
  • N denotes a natural number
  • M codes of the same spreading factor, which are denoted in the drawing by C C , SF, I to C C , SF , M
  • M denotes a natural number.
  • the number of codes M may or may not be the number of codes N.
  • All M + N codes for the PRACH message part are transmitted from the terminal to the UTRAN using I / Q code multiplexing.
  • the advantage of a multicode transmission is that, for example, several codes can be assigned to a terminal, which increases the amount of data to be transmitted for the terminal.
  • FIG. 11 shows the subframe structure for the S-CCPCH in the case of a multicode transmission.
  • up to L codes with the same spreading factor which is denoted in the drawing by C C ⁇ I , S F , I to C C h, sF, L, can be used, L also being a natural number.
  • C C ⁇ I , S F , I to C C C h, sF, L can be used, L also being a natural number.
  • C C ⁇ I , S F , I to C C C h, sF, L can be used, L also being a natural number.
  • C C ⁇ I , S F , I to C C C h, sF, L L also being a natural number.
  • C C ⁇ I , S F , I to C C C h, sF, L
  • FIGS. 12 to 15 show the subframe structures for the PRACH or the S-CCPCH in the case of a single code transmission.
  • a specific spreading code C D , 32, 1 is selected for a subframe of length T f for the data part or “data part” D.
  • the D stands for the data part
  • 32 represents the spreading factor SF and 1 the number of the spreading code used in the OVSF code tree.
  • a specific code C c , 6 4 , ⁇ was selected for the control part, where C stands for control, 64 represents the spreading factor and 1 the number of the spreading code used. Analogously, it can be seen in FIG.
  • FIG. 14 shows a special case of FIG. 10, in which spread codes for the data part and the control part (data part or control part) were selected for a multicode transmission on the PRACH message part, the number N being equal the number M is and is 2.
  • FIG. 15 shows the special case of FIG. 11, in which three different spreading codes were selected for a multicode transmission on the S-CCPCH.
  • the transmission frame length or / and the number of spreading codes used correlated with the quality of the radio channel is influenced, for example, by the following factors: - a movement of the mobile radio subscribers - a multipath propagation of the data signal - the number of active subscribers in a radio cell - the base stations of neighboring radio cells.
  • TRACH Duration of a RACH frame
  • T f duration of a transmission frame

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de transmission de données sur un canal radio commun créé respectivement entre une station de base (BS) et une pluralité de terminaux (UE) dans un système radio mobile. Selon l'invention, les données sont transmises successivement et réparties sur des fenêtres temporelles prédéfinies du canal radio, et respectivement une ou plusieurs fenêtres temporelles sont assemblées sous forme de cadre de transmission. Par ailleurs, la longueur du cadre de transmission dans le canal radio, lors de la transmission entre le terminal et la station de base, vaut n fenêtres temporelles dans la liaison ascendante et dans la liaison descendante. Le procédé selon l'invention est caractérisé en ce que n est un nombre naturel entre 1 et 5.
PCT/EP2004/000635 2003-04-02 2004-01-26 Procede de transmission de donnees Ceased WO2004088877A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10315063.3 2003-04-02
DE2003115063 DE10315063A1 (de) 2003-04-02 2003-04-02 Verfahren zur Übertragung von Daten

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WO2004088877A2 true WO2004088877A2 (fr) 2004-10-14
WO2004088877A3 WO2004088877A3 (fr) 2004-12-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014114167A1 (fr) * 2013-01-28 2014-07-31 电信科学技术研究院 Procédé et dispositif de transmission de canal à accès aléatoire

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8623763D0 (en) * 1986-10-03 1986-11-05 Marconi Co Ltd Communication system
US5307351A (en) * 1991-08-26 1994-04-26 Universal Data Systems, Inc. Data communication apparatus for adjusting frame length and method of operating same
FI95187C (fi) * 1992-11-30 1995-12-27 Nokia Telecommunications Oy Menetelmä viereisten tukiasemien mittaamiseksi TDMA-radiojärjestelmässä sekä TDMA-radiojärjestelmä
US5539730A (en) * 1994-01-11 1996-07-23 Ericsson Ge Mobile Communications Inc. TDMA/FDMA/CDMA hybrid radio access methods
TW317058B (en) * 1996-04-23 1997-10-01 Ibm Data communication system for a wireless access to an atm network
US6141336A (en) * 1996-12-13 2000-10-31 International Business Machines Corporation Traffic scheduling method, system and article of manufacture for a wireless access to an asynchronous transfer mode network
JP2000184433A (ja) * 1998-12-11 2000-06-30 Nec Corp Ｃｄｍａ移動通信システムにおける無線チャネル多重通信方式
DE19911179C1 (de) * 1999-03-12 2000-11-02 Deutsche Telekom Mobil Verfahren zur Adaption der Betriebsart eines Multi-Mode-Codecs an sich verändernde Funkbedingungen in einem CDMA-Mobilfunknetz
DE19940753C2 (de) * 1999-08-27 2001-09-06 Siemens Ag Verfahren zum Zuweisen von Übertragungsressourcen der Aufwärtsrichtung einer Funkübertragung
DE10025286B4 (de) * 1999-10-12 2004-12-23 Siemens Ag Verfahren zur Signalisierung in einem Funk-Kommunikationssystem und Basisstation in einem Funkkommunikationssystem
DE10057487A1 (de) * 2000-11-20 2002-05-23 Siemens Ag Verfahren zur Detektion mindestens eines Broadcast-Kanals sowie zugehörige Funkkommunikationssystem

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014114167A1 (fr) * 2013-01-28 2014-07-31 电信科学技术研究院 Procédé et dispositif de transmission de canal à accès aléatoire
CN103974445A (zh) * 2013-01-28 2014-08-06 电信科学技术研究院 一种随机接入信道传输方法和设备
EP2950601A4 (fr) * 2013-01-28 2016-01-20 China Academy Of Telecomm Tech Procédé et dispositif de transmission de canal à accès aléatoire

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