WO2007023578A1 - Systeme de bandes passantes extensibles, appareil de station radio de base, procede d'emission de canal synchrone et procede d'emission - Google Patents

Systeme de bandes passantes extensibles, appareil de station radio de base, procede d'emission de canal synchrone et procede d'emission Download PDF

Info

Publication number
WO2007023578A1
WO2007023578A1 PCT/JP2005/020311 JP2005020311W WO2007023578A1 WO 2007023578 A1 WO2007023578 A1 WO 2007023578A1 JP 2005020311 W JP2005020311 W JP 2005020311W WO 2007023578 A1 WO2007023578 A1 WO 2007023578A1
Authority
WO
WIPO (PCT)
Prior art keywords
bandwidth
base station
bandwidths
maximum
synchronization channel
Prior art date
Application number
PCT/JP2005/020311
Other languages
English (en)
Japanese (ja)
Inventor
Hiroki Haga
Hidenori Matsuo
Katsuyoshi Naka
Original Assignee
Matsushita Electric Industrial Co., Ltd.
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 Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to JP2007532126A priority Critical patent/JPWO2007023810A1/ja
Priority to PCT/JP2006/316412 priority patent/WO2007023810A1/fr
Publication of WO2007023578A1 publication Critical patent/WO2007023578A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26132—Structure of the reference signals using repetition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present invention enables a radio base station apparatus to support a plurality of maximum bandwidths, and among the maximum bandwidths, it is possible to flexibly allocate a bandwidth in which each wireless terminal apparatus actually performs communication.
  • the present invention relates to a scalable bandwidth system, a radio base station apparatus used in the scalable bandwidth system, a synchronization channel transmission method, and a transmission method.
  • a radio base station apparatus (hereinafter simply referred to as a base station) supports a plurality of maximum bandwidths when performing multi-carrier communication typified by OFDM (Orthogonal Frequency Division Multiplexing).
  • OFDM Orthogonal Frequency Division Multiplexing
  • a wireless communication system has been proposed in which each wireless terminal device (hereinafter simply referred to as a terminal) can flexibly allocate a bandwidth for actual communication within the maximum bandwidth.
  • a wireless communication system is called a scalable bandwidth system (see Non-Patent Document 1, for example).
  • SCH Synchronization Channel
  • the terminal first detects symbol timing (FFT window timing) as the first stage, and then detects frame timing using the SCH as the second stage. Specifically, the received signal is FFTed to separate the SCH and correlate with the SCH replica. The timing at which the largest correlation value among the obtained correlation values is obtained is detected as the frame timing. That Later, as a third step, a scramble code is identified using a pilot channel or the like.
  • Non-Patent Document 3 proposes a method in which two SCHs are arranged in a frequency direction in lOFDM symbols as shown in FIG.
  • lOFDM symbols are arranged in one frame
  • Primary SCH (P—SCH) is a pattern common to all cells
  • S econdary SCH (S—SCH) is a different pattern (a pattern representing a code group) for each cell. It is.
  • Non-Patent Document 1 3GPP TR 25.913 v7.0.0 (2005-06) "Requirements for Evolved UTRA and UTRAN"
  • Non-Patent Document 2 Hanada, Shin, Higuchi, Sawahashi (NTT DoCoMo), RCS2001-091 (2001-07) "Three-stage cell search characteristics using frequency-multiplexed synchronization channels in broadband multicarrier CDMA transmission
  • Non-Patent Document 3 3GPP Rl-050590, NTT DoCoMo "Physical Channels and Multiplexing in Evolved UTRA Downlink” (June 2005)
  • the bandwidth that should be supported by the scalable bandwidth system of Non-Patent Document 1 is specified as 1.25 MHz, 2.5 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz.
  • the terminal Since the terminal does not know which bandwidth the base station is serving at the time of the initial cell search, it does not know which center frequency within 20 MHz maximum and which bandwidth should start the initial cell search attempt. Therefore, the terminal needs to start the initial cell search process after detecting the total service bandwidth of the base station.
  • the terminal cannot know the breakdown of the service bandwidth during the cell search, the position and size of the SCH pattern cannot be known, and as a result, the correlation of the SCH cannot be acquired. As a result, there is a problem that processing after frame synchronization cannot be performed.
  • Figure 2 shows the fixed bandwidth allocated to the terminal. This shows how correlation is acquired in a fixed (5 MHz) multi-carrier communication system. Since the bandwidth is fixed, correlation values can be easily acquired using a SCH replica signal with a period corresponding to this bandwidth.
  • FIG. 3 shows a state of correlation acquisition in a scalable bandwidth system in which the bandwidth allocated to the terminal is variable.
  • the terminal transmits the base station to each terminal during cell search. Since the breakdown of the service bandwidth is not known, the position and size of the SCH pattern is unknown (that is, what SCH replica is used, which is good), and the correlation value is obtained. It becomes difficult.
  • An object of the present invention is to provide a scalable bandwidth system, a radio base station apparatus, and a radio base station apparatus that can correctly acquire a correlation value of a synchronization channel (SCH) without knowing a breakdown of services within the entire bandwidth.
  • a synchronization channel transmission method and a transmission method are provided.
  • the scalable bandwidth system of the present invention is configured such that a wireless base station device supports a plurality of maximum bandwidths, and each wireless terminal device actually communicates within the maximum bandwidth.
  • a scalable bandwidth system capable of flexibly allocating the bandwidth to be performed, and repeatedly transmitting a synchronization channel in the frequency direction in the minimum bandwidth unit of a plurality of serviced bandwidths Calculating a correlation between the synchronization channel sequence signal of the minimum bandwidth unit held in advance and the synchronization channel repeatedly transmitted, and detecting a timing at which the maximum correlation value is obtained as a frame timing
  • the structure which comprises an apparatus is taken.
  • the terminal can correctly acquire the SCH correlation value without knowing the breakdown of services within the entire bandwidth of the base station.
  • FIG. 1 is a diagram showing a configuration example of a synchronization channel
  • FIG. 2 Diagram showing how correlation is acquired in a multi-carrier communication system where the bandwidth allocated to a terminal is fixed
  • FIG. 3 Diagram showing how correlation is acquired in a scalable bandwidth system with variable bandwidth allocated to terminals.
  • FIG. 4 is a block diagram showing the configuration of the base station according to the embodiment
  • FIG. 5 is a block diagram showing the configuration of the terminal according to the embodiment
  • FIG. 6 is a diagram for explaining the operation of the embodiment.
  • FIG. 7 is a diagram for explaining a transmission method of a base station according to another embodiment.
  • FIG. 8 is a diagram for explaining a base station transmission method according to another embodiment.
  • FIG. 4 shows the configuration of a radio base station apparatus (hereinafter referred to as a base station) used in the scalable bandwidth system of the present embodiment
  • FIG. 5 shows a radio terminal that communicates with base station 100.
  • the configuration of the device hereinafter referred to as a terminal.
  • Base station 100 flexibly allocates a bandwidth that is equal to or smaller than the maximum supported bandwidth to each terminal as a communication bandwidth of each terminal, OFDM communication is performed with each terminal.
  • Base station 100 inputs transmission data l to n addressed to terminals l to n to transmission control section 101.
  • Transmission control section 101 selectively outputs input transmission data 1 to n to error correction coding section 102.
  • Error correction coding section 102 performs error correction coding processing on the data input from transmission control section 101, and sends code key data obtained thereby to modulation section 103.
  • the modulation unit 103 performs modulation processing such as QPSK (Quadrature Phase Shift Keying) and 16QAM (Quadrature Amplitude Modulation) on the encoded data, and the modulation signal obtained thereby is sent to the frame formation unit 104. Send it out.
  • Frame forming section 104 forms a transmission frame signal by adding a pilot signal (PL) to the modulated signal, and sends it to scrambling section 105.
  • the scrambling section 105 performs scrambling using a cell-specific scrambling cord and The signal after pulling is sent to subcarrier allocation section 106.
  • subcarrier allocation section 106 receives the synchronization channel sequence signal formed by synchronization channel sequence signal forming section 107.
  • the subcarrier allocation unit 106 is configured so that the synchronization channel sequence signal is repeatedly allocated in the minimum bandwidth unit among the multiple bandwidths supported by the base station over the entire bandwidth of the maximum bandwidth. Subcarrier allocation of synchronization channel sequence signals is performed. Further, although not described in detail here, subcarrier allocation section 106 arranges the signal after scrambling processing addressed to each terminal in a subcarrier having a position and bandwidth based on scheduling information or the like.
  • the subcarrier allocation unit 106 includes a serial / parallel conversion circuit.
  • the output of the subcarrier allocation unit 106 is processed by a fast inverse Fourier transform unit (IFFT) 108, a guard interval is inserted by a subsequent guard interval (GI) insertion unit 109, and a digital analog conversion is performed by a radio transmission unit 110. After being subjected to predetermined radio processing such as processing and up-conversion processing to radio frequency, it is output from the antenna 111.
  • IFFT fast inverse Fourier transform unit
  • GI guard interval
  • Terminal 200 inputs a signal received by antenna 201 to radio reception section 202.
  • Radio receiving section 202 obtains a baseband OFDM signal by performing predetermined radio processing such as down-conversion processing or analog-digital conversion processing on the received signal.
  • the baseband OFDM signal output from radio reception section 202 is input to fast Fourier transform section (FFT) 206 after the guard interval (GI) removal section 205 removes the guard interval.
  • FFT fast Fourier transform section
  • GI guard interval
  • the baseband OFDM signal is input to the bandwidth determination unit 203.
  • the bandwidth determination unit 203 for the OFDM signal obtained in each band, for example, the correlation value between the guard interval source part and the guard interval part in the signal obtained by shifting the OFDM signal by the effective symbol length. And the maximum bandwidth supported by the base station 100 is determined based on the correlation value.
  • the symbol timing detection unit 204 detects the symbol timing by detecting the peak of the correlation value obtained by the bandwidth determination unit 203, for example.
  • the FFT 206 is detected by the symbol timing detection unit 204. By performing FFT processing at the symbol timing (FFT window timing), a signal before IFFT processing is obtained and sent to subcarrier selection sections 207 and 209.
  • the subcarrier selection unit 207 sends, for example, a signal of the subcarrier indicated by the scheduling information sent on the control channel to the descrambling processing unit 208.
  • Subcarrier selection section 209 selects a subcarrier signal in a minimum bandwidth unit from among a plurality of bandwidths supported by the base station, and calculates SCH correlation value calculation section 210 and pilot correlation value calculation. Send to part 212.
  • SCH correlation value calculation section 210 calculates a correlation value between the synchronization channel signal output from subcarrier selection section 209 and a replica of the synchronization channel sequence signal in the minimum bandwidth unit, It is sent to the timing / code gnole detector 211.
  • the frame timing / code group detection unit 211 detects the frame timing and the code group by detecting the peak of the correlation value.
  • the pilot correlation calculation unit 212 calculates a correlation value between the signal output from the FFT 206 and a plurality of candidate scramble codes at the start timing of the frame (that is, the scrambled pilot disposed at the start of the frame). And correlation values with a plurality of candidate scramble codes are calculated), and the correlation values are sent to the scramble code identifying unit 213.
  • the scramble code identifying unit 213 identifies the scramble code having the largest correlation value as the scramble code used in the base station 100, and sends the identified scramble code to the descrambling processing unit 208.
  • the descrambling processing unit 208 descrambles the signal output from the subcarrier selection unit 207 with the identified scramble code.
  • the descrambled signal is demodulated by the demodulator 214 and decoded by the decoder 215 to be received data.
  • base station 100 generates an SCH OFDM symbol from a symbol sequence common to all base stations, time-multiplexes the frame data, and inserts it into the frame after the scrambling process To do.
  • the SCH symbol sequence pattern has a size corresponding to the number of subcarriers of the minimum bandwidth of the scalable bandwidth (eg, 1.25 MHz).
  • Subcarrier allocation section 106 repeatedly arranges the SCH having the minimum bandwidth size.
  • the SCH arrangement method will be specifically described with reference to FIG. Assume that the maximum bandwidth that base station 100 can transmit is 5 MHz, and that data signals are transmitted in three parts: 1.25 MHz, 2.5 MHz, and 1.25 MHz. For simplicity of explanation, the number of subcarriers corresponding to the minimum bandwidth (1.25 MHz) of the scalable bandwidth is assumed to be 8. As shown in FIG. 6, the base station 100 repeatedly arranges SCH patterns having a size equivalent to the width of 1.25 MHz regardless of the service breakdown width.
  • the terminal 200 Upon receiving such a signal, the terminal 200 performs the following processing.
  • the SCH correlation value calculation unit 210 of the terminal 200 is As shown in FIG. 6, SCH correlation values are synthesized. That is, the SCH correlation value calculation unit 210 synthesizes the correlation values obtained for each minimum bandwidth, and detects the timing at which the maximum value is obtained from the combined correlation values as a frame. This can improve the accuracy of frame timing detection.
  • the SCH correlation value calculation unit 210 selects a synchronization channel transmitted with one or a plurality of minimum bandwidths from among the synchronization channels repeatedly transmitted over the entire maximum bandwidth. Correlation can also be performed. In this way, it is not necessary to perform correlation processing with all the minimum bandwidths, and the amount of cell search processing can be reduced.
  • the minimum bandwidth unit (for example, 1.25 MHz unit) out of a plurality of bandwidths serviced by the system, and the maximum bandwidth (for example, 5 MHz).
  • the correlation between the base station 100 that repeatedly transmits the synchronization channel over the entire band, the synchronization channel sequence signal of the minimum bandwidth unit that is stored in advance, and the synchronization channel that is repeatedly transmitted is calculated, and the maximum
  • the terminal 200 can correctly calculate the SCH correlation value without knowing the breakdown of services within the entire bandwidth of the base station 100. You can get it.
  • base station 100 has a plurality of bands serviced by the system.
  • the case where the synchronization channel is repeatedly transmitted in the minimum bandwidth unit (for example, 1.25 MHz unit) of the bandwidth without being spaced over the entire bandwidth of the maximum bandwidth (for example, 5 MHz) is described.
  • the present invention is not limited to this, and for example, a synchronization channel in the minimum bandwidth unit may be repeatedly transmitted at regular intervals in the frequency direction.
  • the present invention is not limited to the case where the synchronization channel of the minimum bandwidth unit is repeatedly transmitted over the entire maximum bandwidth supported by the base station. This is because, for example, when the band to be used is limited in advance within the maximum bandwidth, the synchronization channel may be repeatedly transmitted in the minimum bandwidth unit in the frequency direction only for the limited band. Because.
  • the base station performs a minimum bandwidth unit among a plurality of bandwidths to be serviced.
  • the common control channel may be repeatedly transmitted over the frequency direction.
  • the terminal can know the common control information sent on the common control channel without knowing the breakdown of the services within the entire bandwidth of the base station, so the SCH correlation processing must be performed. Will be able to.
  • base station 100 repeatedly transmits the SCH and the common channel so that the center frequency of the SCH and the common channel matches the raster frequency, and terminal 200 uses the signal received with reference to the raster frequency. If the frame timing detection process as described above is performed, the terminal can easily detect the frequency being used during the carrier frequency search, which is more preferable.
  • the terminal generally performs a carrier frequency search before performing a cell search.
  • the carrier frequency search is to check whether each carrier is using a frequency that can be used for services.Received signal strength indicators (RSSI), etc. are received at a raster frequency (for example, 200 kHz). The frequency to be used is detected based on.
  • This carrier frequency search see, for example, Japanese Patent Laid-Open Nos. 2002-300136 and 2003-134569
  • the raster frequency see, for example, 3GPP TS 25. 101 V6.9.0
  • the concept of the carrier frequency search and the raster frequency is used.
  • the base station arranges the SCH with reference to the raster frequency and that the terminal performs a carrier frequency search in increments of the raster frequency. That is, as shown in FIG. 8, the base station is arranged so that the center frequency of the SCH having the minimum bandwidth (1.25 MHz) matches the raster frequency.
  • the base station 100 in FIG. 4 sets the SCH so that the center frequency of the synchronization channel (SCH) formed by the synchronization channel sequence signal forming unit 107 matches the raster frequency by the subcarrier allocation unit 106.
  • Subcarrier placement The terminal 200 in FIG. 5 performs reception processing by the radio reception unit 202 in increments of raster frequencies.
  • the scalable bandwidth system, radio base station apparatus, synchronization channel transmission method, and transmission method of the present invention provide a synchronization channel (SCH) correlation process even if the terminal does not know the breakdown of services within the entire bandwidth. It can be widely applied to scalable bandwidth systems, radio base station apparatuses, and wireless terminal apparatuses that are required to execute the above.
  • SCH synchronization channel

Landscapes

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

Abstract

Même si un terminal ne connaît pas les incidents des services dans la totalité des bandes passantes, il peut effectuer un traitement de corrélation de canaux synchrones (SCH). Une station de base émet de manière répétitive un canal synchrone par unités de la bande passante la plus courte (par exemple, 1,25 MHz) d'une pluralité de bandes passantes desservies par le système, sur la bande complète de la bande passante la plus longue (par exemple, 5 MHz). Le terminal calcule la corrélation entre un signal de séquence de canal synchrone de l'unité de la bande passante la plus courte maintenu à l'avance et le canal synchrone émis de manière répétitive, et il détermine, en tant que séquencement de trame, un séquencement pour lequel la valeur maximale de corrélation est obtenue.
PCT/JP2005/020311 2005-08-23 2005-11-04 Systeme de bandes passantes extensibles, appareil de station radio de base, procede d'emission de canal synchrone et procede d'emission WO2007023578A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007532126A JPWO2007023810A1 (ja) 2005-08-23 2006-08-22 スケーラブル帯域幅システム、無線基地局装置、同期チャネル送信方法及び送信方法
PCT/JP2006/316412 WO2007023810A1 (fr) 2005-08-23 2006-08-22 Système de bande passante évolutive, appareil de station de base radio, procédés de transmission de canal synchrone et de transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/JP2005/015296 WO2007023532A1 (fr) 2005-08-23 2005-08-23 Système à bande passante dimensionnable, appareil station de base radio, méthode de transmission par canal synchrone et méthode de transmission
JPPCT/JP2005/015296 2005-08-23

Publications (1)

Publication Number Publication Date
WO2007023578A1 true WO2007023578A1 (fr) 2007-03-01

Family

ID=37771290

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP2005/015296 WO2007023532A1 (fr) 2005-08-23 2005-08-23 Système à bande passante dimensionnable, appareil station de base radio, méthode de transmission par canal synchrone et méthode de transmission
PCT/JP2005/020311 WO2007023578A1 (fr) 2005-08-23 2005-11-04 Systeme de bandes passantes extensibles, appareil de station radio de base, procede d'emission de canal synchrone et procede d'emission

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/015296 WO2007023532A1 (fr) 2005-08-23 2005-08-23 Système à bande passante dimensionnable, appareil station de base radio, méthode de transmission par canal synchrone et méthode de transmission

Country Status (1)

Country Link
WO (2) WO2007023532A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007129546A1 (fr) * 2006-05-01 2007-11-15 Ntt Docomo, Inc. Station de base et procédé de génération de canal de synchronisation
JP2008236383A (ja) * 2007-03-20 2008-10-02 Toshiba Corp 無線通信システム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004207983A (ja) * 2002-12-25 2004-07-22 Japan Telecom Co Ltd 移動端末および移動体通信システム

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004207983A (ja) * 2002-12-25 2004-07-22 Japan Telecom Co Ltd 移動端末および移動体通信システム

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
"Basic Structure of Control Channel and Synchronization Channel for Scalable Bandwidth in Evolved UTRA Downlink", 3GPP, 3GPP TR25.913 V7.0.0, June 2005 (2005-06-01), pages 1 - 15, XP003009124 *
"Basic Structure of Control Channel and Synchronization Channel for Scalable Bandwidth in Evolved UTRA Downlink", NTT DOCOMO, 3GPP TSG RAN WG1 #42BIS R1-051147, 14 October 2005 (2005-10-14), pages 1 - 13, XP003009126 *
"Physical Channel Concept for Scalable Bandwidth in Evolved UTRA Downlink", NTT DOCOMO, 3GPP TSG RAN WG1 AD HOC R1-050592, 21 June 2005 (2005-06-21), pages 1 - 14, XP003002746 *
"Physical Channel Structures for Evolved UTRA", NTT DOCOMO, 3GPP TSG RAN WEG1 MEETING #41 R1-050464, 13 May 2005 (2005-05-13), pages 1 - 13, XP003009125 *
ATARASHI H. ET AL.: "Evolved UTRA Kudari Link ni Okeru Musen Access Hoshiki no Kento", 2005 NEN IEICE COMMUNICATIONS SOCIETY CONFERENCE KOEN RONBUNSHU I, 7 September 2005 (2005-09-07), pages 440 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007129546A1 (fr) * 2006-05-01 2007-11-15 Ntt Docomo, Inc. Station de base et procédé de génération de canal de synchronisation
JP2008028974A (ja) * 2006-05-01 2008-02-07 Ntt Docomo Inc 基地局及び同期チャネル生成方法
US8130715B2 (en) 2006-05-01 2012-03-06 Ntt Docomo, Inc. Base station and method of generating a synchronization channel
JP2008236383A (ja) * 2007-03-20 2008-10-02 Toshiba Corp 無線通信システム

Also Published As

Publication number Publication date
WO2007023532A1 (fr) 2007-03-01

Similar Documents

Publication Publication Date Title
JP4440895B2 (ja) 送信装置および送信方法
EP2225838B1 (fr) Procédé d'émission et de réception de signaux utilisant des radiofréquences multibandes
US20090135802A1 (en) Scalable bandwidth system, radio base station apparatus, synchronous channel transmitting method and transmission method
US8149686B2 (en) Base station apparatus, mobile station apparatus and synchronization channel transmission method
KR101273986B1 (ko) 기지국, 이동국 및 방법
WO2007023810A1 (fr) Système de bande passante évolutive, appareil de station de base radio, procédés de transmission de canal synchrone et de transmission
US20050002369A1 (en) Apparatus and method for cell search in mobile communication system using a multiple access scheme
EP2169864A1 (fr) Dispositif de poste de base, dispositif de poste mobile et procédé de transmission de canal de synchronisation
WO2007023809A1 (fr) Systeme de bande passante evolutive, appareils de station de base radio et de terminal radio
US20130230012A1 (en) Determining a mobile communications network cell frequency
JP4869339B2 (ja) 無線基地局装置
EP2020770A1 (fr) Appareil de station de base radio
US20100157884A1 (en) Base station device and mobile station device
JP5045127B2 (ja) 無線通信システム
WO2007023578A1 (fr) Systeme de bandes passantes extensibles, appareil de station radio de base, procede d'emission de canal synchrone et procede d'emission
JPWO2007023810A1 (ja) スケーラブル帯域幅システム、無線基地局装置、同期チャネル送信方法及び送信方法
JP2006324859A (ja) 基地局装置、移動局装置、およびセルサーチ方法
JP5154517B2 (ja) 受信装置、受信方法、通信システム
JP5154703B2 (ja) 送信装置および送信方法
JP5083434B2 (ja) 移動局及び移動局の通信方法
KR20070098003A (ko) 직교주파수분할다중화 시스템에서 단말의 하향링크 심벌타이밍 복원 장치 및 방법
KR20100002589A (ko) 주파수 오버레이를 지원하는 통신시스템에서 보호 대역을데이터 부반송파로 사용하기 위한 방법 및 장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 05805523

Country of ref document: EP

Kind code of ref document: A1