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WO2008059554A1 - Système d'appareil de station de base radio - Google Patents

Système d'appareil de station de base radio Download PDF

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Publication number
WO2008059554A1
WO2008059554A1 PCT/JP2006/322541 JP2006322541W WO2008059554A1 WO 2008059554 A1 WO2008059554 A1 WO 2008059554A1 JP 2006322541 W JP2006322541 W JP 2006322541W WO 2008059554 A1 WO2008059554 A1 WO 2008059554A1
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WO
WIPO (PCT)
Prior art keywords
base station
radio base
data
station apparatus
unit
Prior art date
Application number
PCT/JP2006/322541
Other languages
English (en)
Japanese (ja)
Inventor
Tomoko Fujino
Kuniyuki Suzuki
Original Assignee
Mitsubishi Electric Corporation
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 Mitsubishi Electric Corporation filed Critical Mitsubishi Electric Corporation
Priority to CNA2006800554909A priority Critical patent/CN101502165A/zh
Priority to PCT/JP2006/322541 priority patent/WO2008059554A1/fr
Priority to JP2008544017A priority patent/JPWO2008059554A1/ja
Publication of WO2008059554A1 publication Critical patent/WO2008059554A1/fr

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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
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to a radio base station apparatus system in which a plurality of radio base station apparatuses that perform radio communication with a mobile communication station are connected via a line, and in particular, operate in cooperation with a plurality of radio base station apparatuses. It is related to the technology to make it.
  • a conventional radio base station apparatus adopts a transmission path to a mobile communication control station that performs line control and line exchange with a mobile communication station in a mobile communication system having a plurality of different radio section interfaces. Connected through.
  • the plurality of radio base station apparatuses are also configured with a radio unit and a control unit, but share a control unit for a plurality of different radio section interfaces, and provide only a radio unit for each radio section interface. (For example, refer to Patent Document 1).
  • Patent Document 1 Japanese Patent Laid-Open No. 7-231469
  • Patent Document 2 JP-A-9-102977
  • each radio base station device operates individually, so that the same number of control signals from the higher-level device is required. Therefore, there is a problem that as the number of radio base station devices to be connected increases, the number of control signals with higher device power increases.
  • Patent Document 1 does not have any function when processing data of each functional block in the radio base station apparatus is exchanged between a plurality of radio base station apparatuses. There was a problem that the processing load of the device could not be distributed.
  • Patent Document 2 in the configuration of Patent Document 2, as in Patent Document 1, a plurality of radio base station devices operate individually rather than operating as one radio base station device system. As many control signals as the number of radio base station apparatuses are required. Therefore, as in Patent Document 1, there is a problem that the number of control signals from the host device increases as the number of radio base station devices connected increases.
  • the present invention has been made to solve the above problems, and provides a radio base station apparatus system capable of distributing the processing load and reducing the number of control signals for higher-level apparatus power. With the goal.
  • a first aspect of the radio base station apparatus system is a radio base station apparatus system in which a plurality of radio base station apparatuses that perform radio communication with a mobile communication station are connected by a line.
  • One radio base station apparatus included in the radio base station apparatus transmits the intermediate processing data that has been processed up to a predetermined stage to another radio base station included in the plurality of radio base station apparatuses via a line.
  • the data is transmitted to the apparatus, and the other radio base station apparatus receives the intermediate processing data and performs processing in a stage following a predetermined stage.
  • the radio base station apparatus of the present invention it is possible to distribute the processing load and reduce the number of control signals from the upper apparatus.
  • FIG. 1 is a diagram illustrating a configuration example of a radio base station apparatus according to Embodiment 1.
  • FIG. 1 is a diagram illustrating a configuration example of a radio base station apparatus according to Embodiment 1.
  • FIG. 2 is a diagram showing a first example of a resource optimization method in the radio base station apparatus system according to Embodiment 1.
  • FIG. 3 is a diagram showing a first example of a resource optimization method in the radio base station apparatus system according to the first embodiment.
  • FIG. 4 is a diagram showing a second example of the resource optimization method in the radio base station apparatus system according to Embodiment 1.
  • FIG. 5 is a diagram showing a second example of a resource optimization method in the radio base station apparatus system according to Embodiment 1.
  • FIG. 6 is a diagram showing an internal configuration example of a radio base station apparatus according to Embodiment 1.
  • FIG. 7 is a diagram showing a time division multiplexing scheme of the radio base station apparatus according to the first embodiment.
  • FIG. 8 is a diagram showing a time division multiplexing scheme of the radio base station apparatus according to the first embodiment.
  • FIG. 9 is a diagram showing a time division multiplexing scheme of the radio base station apparatus according to the first embodiment.
  • FIG. 10 is a diagram showing a connection example of a radio base station apparatus according to the second embodiment.
  • FIG. 11 is a diagram illustrating a connection example of the radio base station apparatus according to the third embodiment.
  • FIG. 12 is a diagram showing a connection example of the radio base station apparatus according to the fourth embodiment.
  • FIG. 13 is a diagram showing a configuration example of a data integration / distribution unit added to the radio base station apparatus according to Embodiment 4.
  • FIG. 14 is a timing chart showing time division multiplexed data received by the radio base station apparatus according to the fourth embodiment.
  • FIG. 15 is a timing chart showing time division multiplexed data received by the radio base station apparatus according to the fourth embodiment.
  • FIG. 16 is a timing chart showing time division multiplexed data received by the radio base station apparatus according to the fourth embodiment.
  • FIG. 17 is a timing chart showing time division multiplexed data transmitted by the radio base station apparatus according to the fourth embodiment.
  • FIG. 18 is a timing chart showing time division multiplexed data transmitted by the radio base station apparatus according to the fourth embodiment.
  • FIG. 19 is a timing chart showing time division multiplexed data transmitted by the radio base station apparatus according to the fourth embodiment.
  • FIG. 20 is a timing chart showing time division multiplexed data transmitted by the radio base station apparatus according to the fifth embodiment.
  • FIG. 21 is a diagram showing a connection example of the radio base station apparatus according to the sixth embodiment.
  • FIG. 22 is a diagram illustrating an internal configuration example of a radio base station apparatus according to Embodiment 7.
  • FIG. 23 is a diagram illustrating an internal configuration example of a radio base station apparatus according to Embodiment 8.
  • FIG. 24 is a timing chart showing time-division multiplexed data using a common clock generated by a clock generation unit in a radio base station apparatus according to Embodiment 8.
  • FIG. 1 is a diagram showing a configuration example of one radio base station apparatus included in the radio base station apparatus system according to Embodiment 1 of the present invention.
  • This radio base station apparatus is for performing radio communication with a mobile communication station, and realizes a radio base station apparatus system by being connected to another radio base station apparatus via a line.
  • step S1 block 1 performing the first stage processing is connected to step S2 block 2 and data integration / distribution unit 5.
  • the step S2 block that performs the second stage processing is connected to the step S1 block 1, the step S3 block 3, and the data integration / distribution unit 5.
  • Step S3 block 3, which performs the third stage processing is connected to step S2 block 2, step S4 block 4, and data integration and distribution unit 5.
  • Step S4 block 4 for performing the process of the fourth stage is connected to step S3 block 3 and data integration / distribution unit 5.
  • the data integration / distribution unit 5 integrates the intermediate processing data processed in steps S1 block 1 to step S3 block 3 and transmits them to other radio base station devices or receives them from other radio base station devices. Data is distributed to each functional block in the own radio base station equipment.
  • step S1 block 1 The data processed in step S1 block 1 is input to step S2 block 2 or data integration / distribution unit 5.
  • step S2 block 2 uses the data input from step S1 block 1 or data integration / distribution unit 5 to perform the second stage processing.After the processing is completed, this data is converted to step S3 block 3 or data integration. ⁇ Input to distribution unit 5.
  • Step S3 Block 3 uses the data input from step S2 block 2 or data integration / distribution unit 5 to perform the third stage processing.After the processing is completed, this data is transferred to step S4 block 4 or data integration 'distribution unit. Input to 5.
  • Step S4 block 4 uses the data input from step S3 block 3 or data integration / distribution unit 5 to perform the fourth stage of processing.
  • the data integration / distribution unit 5 integrates the intermediate processing data processed in step S1 block 1 to step S3 block 3 and transmits it to another radio base station apparatus or receives it from another radio base station apparatus. Distribute data to each functional block in own radio base station [0016] In this way, one radio base station is connected to another radio base station apparatus via a line, and intermediate processing data that has been processed up to a predetermined stage in one radio base station apparatus is transferred to another radio base station apparatus. Resources can be optimized by transmitting to the radio base station apparatus and performing processing in the stage following the predetermined stage in the other radio base station apparatus.
  • FIGS. 2 to 5 a case where a radio base station apparatus a (--the radio base station apparatus) and a radio base station apparatus b (another radio base station apparatus) having similar functional blocks are connected is described.
  • a radio base station apparatus a (--the radio base station apparatus) and a radio base station apparatus b (another radio base station apparatus) having similar functional blocks are connected is described.
  • FIGS. 2 to 3 show a first example of the resource optimization technique.
  • Figure 2 shows before optimization
  • Figure 3 shows after optimization.
  • the encoding unit 9a and the error correction decoding unit 28a are made up of one or a plurality of FPGAs.
  • a dotted line that is, TX
  • the blocker other than the unit 18b, the RX unit 19b, and the IF unit 6b is made of one or a plurality of FPGAs, for example, each of the error correction decoding units 28a and 28b is a turbo decoding circuit. Assume that the circuit usage rate is 30% even at the maximum load.
  • the block reference code includes the device reference code (for example, modulation). Section 15a-1 and modulation section 15b).
  • the blocks with the same name shall have the same function.
  • the block is referred to as the modulation unit 15 or the like by removing the reference numerals of the device.
  • the data integration and distribution units 5a and 5b are added to the radio base station devices a and b, respectively, and the radio base station device b is connected to the radio base station device a Data power that has been channel decoded by the channel decoding unit 25a of the station apparatus a Data is transmitted to the radio base station apparatus b via the data integration and distribution units 5a and 5b, and an error is received by the error correction decoding unit 28b. Correction After decryption, the IF unit of the radio base station device a via the data integration 'distribution units 5b, 5a To be sent to 6a. As a result, the radio base station apparatus a does not need to have the error correction decoding unit 28a as an FPGA.
  • the modulation unit 15a-1 and the demodulation unit 22a 1 (FIG. 2)
  • the number of users that can be processed it is possible to provide a modulation unit 15a-2 and a demodulation unit 2 2a-2 (FIG. 3), respectively.
  • FIGS. 4 to 5 show a second example of the resource optimization technique.
  • Figure 4 shows before optimization and Figure 5 shows after optimization.
  • the encoding unit 9a and the error correction decoding unit 28a are made up of one or a plurality of FPGAs.
  • a modulation unit 15b-1, a demodulation unit 22b-1, a channel code unit 12b, a channel decoding unit 25b, an error correction coding unit 9b, and an error correction decoding unit 28b surrounded by a dotted line are included. (That is, the block excluding the TX unit 18b, RX unit 19b, and IF unit 6b) is made up of one or more FPGAs.
  • the radio base station devices a and b are radio base station devices in the same service area having different frequencies, as shown in FIG. 5, the modulation unit 15a-1, the demodulation unit 22a-1, and the modulation In place of the unit 15b-1 and the demodulator 22b-1, a modulator 15a-3, a demodulator 22a-3, a modulator 15b-3, and a demodulator 22b-3 are provided, respectively, and the radio base station apparatus a By connecting the base station apparatus b, the number of users that can be processed can be increased.
  • the modulation unit 15a-1, the demodulation unit 22a-1, the modulation unit 15b-1, and the demodulation unit 22b-1 are both force modulation units 15a that process both common channels and dedicated channels. -3 and demodulator 22a-3 process only the common channel, and modulators 15b-3 and demodulator 22b-3 process only the individual channels.
  • the radio format 'transmission period and data amount differ between the common channel and the dedicated channel.
  • a random access channel for example, 3GPP W-CDMA FDD (Frequency Division PRACH) in Duplex.
  • the radio base station apparatus a transmits / receives data between the radio base station apparatuses a and b connected to each other via the data integration / distribution units 5a and 5b. Only the processing of the common channel is performed. Only channel processing is performed.
  • the modulation unit 15a-3 and the demodulation unit 22a-3 of the radio base station apparatus a only need to process the common channel! Therefore, it is possible to aggregate the same functions.
  • a random access circuit can be operated at twice the speed and processed in a time-sharing manner.
  • the number of channels can also be reduced for known sequence pilot channels (PCPICH, PSCH, SSCH) used in mobile station neighboring cell search and propagation path estimation in demodulation. Also, depending on the capacity of the radio base station apparatus, the number of channels can be reduced even for random access channels.
  • PCPICH, PSCH, SSCH known sequence pilot channels
  • the shared channel is also similar to HSDPA in 3GPP.
  • FIG. 6 shows an internal configuration example of the radio base station apparatus in which the process at each stage is described in detail.
  • FIG. 6 shows a basic configuration of radio base station apparatuses according to all embodiments.
  • the IF unit 6 that transmits and receives data to and from the host device is connected to the selectors SEL7 and SEL30.
  • the IF section 6 outputs the data input also from the external force to the selector SEL7, and the selector SEL3
  • Data input from 0 is sent to the outside.
  • the selector SEL7 is connected to the selector SEL8, the IF unit 6, and the data integration / distribution unit 5, and outputs the data input from the IF unit 6 to the selector SEL8 or the data integration / distribution unit 5. .
  • the selector SEL8 is connected to the selector SEL7, the error correction code field unit 9 and the data integration / distribution unit 5, and the data input from the selector SEL7 or the data integration / distribution unit 5 is error correction code. Input to key 9.
  • the error correction coding unit 9 is connected to the selectors SEL8 and SEL10, and the selector SEL8 input data such as turbo coding, convolutional coding, Reed-Solomon coding, LDP C code, etc. Perform error correction code input and output data after error correction code input to selector SEL10.
  • the selector SEL10 is connected to the error correction encoding unit 9, the selector SEL11, and the data integration / distribution unit 5, and the data input from the error correction code input unit 9 is input to the selector SEL11 or the data integration / distribution unit. Input to part 5.
  • the selector SEL 11 is connected to the selector SEL 10, the channel encoding unit 12, and the data integration / distribution unit 5, and the data input from the selector SEL 10 or the data integration / distribution unit 5 is used as the channel code input unit. Input to 12.
  • the channel encoder 12 is connected to the selectors SEL11 and SEL13, and the selector SE
  • the channel code key (interleaved or wireless Rate matching, multiplexing with the control channel, etc.) and data after channel coding is input to the selector SEL13.
  • the selector SEL 13 is connected to the channel encoding unit 12, the selector SEL 14, and the data integration / distribution unit 5, and the data input from the channel code unit 12 is selected by the selector SEL 14 or the data integration / distribution unit. Input to 5.
  • the selector SEL14 is connected to the selector SEL13, the modulation unit 15, and the data integration / distribution unit 5, and the data input from the selector SEL13 or the data integration / distribution unit 5 is modulated.
  • the modulation unit 15 is connected to the selectors SEL14 and SEL16.
  • ⁇ ⁇ 2 shift BPSK, ⁇ / 4-shift QPSK, QPSK, 8 PSK, 16QAM, 64QAM, etc.
  • Data modulation and modulation processing such as CDMA'OFDMA (IFFT and gap ZCP insertion) are performed, and the modulated data is input to the selector SEL16.
  • the selector SEL16 is connected to the modulation unit 15, the selector SEL17, and the data integration / distribution unit 5, and inputs the data input from the modulation unit 15 to the selector SEL 17 or the data integration / distribution unit 5 .
  • the selector SEL 17 is connected to the selector SEL 16, the TX unit 18, and the data integration / distribution unit 5, and inputs data input from the selector SEL 16 or the data integration / distribution unit 5 to the TX unit 18.
  • the TX unit 18 is connected to the selector SEL17, and converts the data input from the selector SEL17 into a transmission radio frequency signal.
  • RX unit 19 is connected to selector SEL20, detects a received radio frequency signal, and inputs the received signal after detection to selector SEL20.
  • the selector SEL 20 is connected to the RX unit 19, the selector SEL 21, and the data integration / distribution unit 5, and inputs data input from the RX unit 19 to the selector SEL 21 or the data integration / distribution unit 5.
  • the selector SEL21 is connected to the selector SEL20, the demodulator 22, and the data integration / distribution unit 5, and the data input from the selector SEL20 or the data integration / distribution unit 5 is demodulated. Input to 22.
  • the demodulating unit 22 is connected to the selectors SEL21 and SEL23, and the data input from the selector SEL21 is subjected to demodulation processing such as CDMA 'SC—FDMA (gap removal and IDFT and FFT), for example, ⁇ / 2— Shift BPSK, ⁇ Z4— Performs data demodulation processing such as shift QPSK, QPSK, 8PSK, 16QAM, 64QAM, and phase compensation processing, and inputs the demodulated data to selector SEL23.
  • demodulation processing such as CDMA 'SC—FDMA (gap removal and IDFT and FFT), for example, ⁇ / 2— Shift BPSK, ⁇ Z4— Performs data demodulation processing such as shift QPSK, QPSK, 8PSK, 16QAM, 64QAM, and phase compensation processing, and inputs the demodulated data to selector SEL23.
  • the selector SEL 23 is connected to the demodulator 22, the selector SEL 23, and the data integration / distribution unit 5, and causes the data input from the demodulation unit 22 to be input to the selector SEL 24 or the data integration / distribution unit 5.
  • the selector SEL 24 is connected to the selector SEL 23, the channel decoding unit 25, and the data integration / distribution unit 5, and the data input from the selector SEL 23 or the data integration / distribution unit 5 is sent to the channel decoding unit 25. Let them enter.
  • the channel decoding unit 25 is connected to the selectors SEL24 and SEL26, and performs channel decoding (such as deinterleaving, rate dematching, and separation from the control channel) on the data input from the selector SEL2 4 Input the data after decryption to the selector SEL26.
  • channel decoding such as deinterleaving, rate dematching, and separation from the control channel
  • the selector SEL 26 is connected to the channel decoding unit 25, the selector SEL 27, and the data integration / distribution unit 5, and causes the data input from the channel decoding unit 25 to be input to the selector SEL 27 or the data integration / distribution unit 5. .
  • the selector SEL27 is connected to the selector SEL26, the error correction decoding unit 28, and the data integration / distribution unit 5, and performs error correction decoding on the data input from the selector SEL26 or the data integration / distribution unit 5. Input to the conversion unit 28.
  • the error correction decoding unit 28 is connected to the selectors SEL27 and SEL29, and the selector SE
  • the selector SEL 29 is connected to the error correction decoding unit 28, the selector SEL 30, and the data integration / distribution unit 5, and the data from the error correction decoding unit 28 is sent to the selector SEL 30 or the data Data integration 'distribution unit 5
  • the selector SEL 30 is connected to the selector SEL 29, the IF unit 6, and the data integration / distribution unit 5, and inputs data input from the selector SEL 29 or the data integration / distribution unit 5 to the IF unit 6.
  • the data integration / distribution unit 5 includes an IF unit 6, an error correction encoding unit 9, a channel code encoding unit 12, a modulation unit 15, a TX unit 18, an RX unit 19, a demodulation unit 22, and a channel decoding unit. 25 and the function of integrating the data output from each block of the error correction decoding unit 28 and transmitting it to other radio base station apparatuses. It also has a function of distributing data received from other radio base station devices to each of the above-mentioned blocks. At this time, the processed data from all the blocks is not necessarily input to the data integration / distribution unit 5, but the processed data from any of the above blocks is the data integration / distribution unit 5 Is input. Similarly, for data received from other radio base station apparatuses, the data integration / distribution unit 5 receives data to be input to any of the above blocks, and each data should be input to which block. It has a function to identify data and input data to the corresponding block.
  • data output from each block is bundled without multiplexing all physical lines in the data integration / distribution unit 5 using one physical line for each block, and other wireless There is a method to transmit to the base station equipment. In this case, data from other radio base station apparatuses as well as physical linear forces that differ for each block are received.
  • the data output from each block is wavelength-multiplexed (WDM: Wavelet).
  • WDM Wavelet
  • data from other radio base station devices is also wavelength-multiplexed and received.
  • the intermediate processing data is propagated in different time division multiplexing channels in the first and second schemes, and is propagated in different physical lines in the third scheme, depending on the contents thereof.
  • the signals are propagated at different wavelengths.
  • the first method, the third method, the second method, the third method, the third method, and the fourth method can be combined.
  • the data transmission direction is bidirectional
  • the data transmission / reception timing control among all the radio base station devices is more complicated than in the second or third method. Since the physical line used for transmission / reception can be reduced as compared with the second or third method, the interface with other radio base stations can be simplified.
  • the data transmission direction is a fixed direction for each physical line, so the timing control of data transmission / reception is simpler than that of the first method.
  • the number of physical lines can be reduced as compared with the third method, the interface with other radio base station devices can be simplified.
  • the data integration / distribution unit 5 does not need a selector or control signal for time-division multiplexing data, Compared with the second method, the data integration / distribution unit 5 circuit can be simplified.
  • FIG. 7 shows a system in which data D after time-division multiplexing and data identification information E for identifying the contents of time-division multiplexing D are separately wired at the same time, and transmitted at different wavelengths! / RU
  • a radio base station that receives data D after time division multiplexing uses the data identification information E to Data D after division multiplexing is identified, and data D after time division multiplexing is distributed to each block.
  • the data integration / distribution unit 5 needs to generate the data identification information E, but data transmission can be performed efficiently.
  • FIG. 8 shows a method for transmitting data D after time-division multiplexing by adding a data analysis header (data number information 37, 40 and data size information 38, 41) indicating the data number and data size. ing.
  • the radio base station apparatus that receives the data recognizes the head of the data of each block that has been time-division multiplexed by collating the pattern of the head recognition header 36, and uses the data number and data size indicated in the data analysis header. Used to detect data distributed to each block.
  • FIG. 8 shows, as an example, a case where the post-demodulation data 39 output from the demodulation unit 22 and the error correction decoding post-output data 42 output from the error correction decoding unit 28 are time-division multiplexed.
  • the head recognition header 36 (“0110" in the case of FIG. 8) is for identifying the data head of each block of the data D after time division multiplexing.
  • the data number information 37, 40 represents a data number for identifying the data contents on the receiving side.
  • Data number information 37 indicates that the subsequent data is post-demodulation data 39 ("1" in FIG. 8), and data number information 40 indicates that the subsequent data is post-error correction decoding data 42 ("2" in Fig. 8).
  • the data size information 38, 41 indicates the data size
  • the data size information 38 indicates that the subsequent demodulated data 39 is 320 bits
  • the data size information 41 indicates the subsequent error correction decoded data.
  • 42 represents 5114bit! /
  • the header size is known (eg, 16 bits) and fixed.
  • the method of FIG. 8 does not require the data identification information E as shown in FIG. 7 (it is integrated with the data D after time division multiplexing), so a physical line or the like for transmitting the data identification information E is unnecessary. It becomes.
  • FIG. 9 shows a scheme in which a fixed time slot is assigned to each block, and output data from all blocks is time division multiplexed and transmitted as data D after time division multiplexing.
  • the radio base station apparatus identifies the received time division multiplexed data D by the time slot number and distributes the corresponding data to each block.
  • time slot for example, data transmission, reception, or transmission / reception may be performed in synchronization with the radio frame of the broadcast channel. Ie one time The number of bits in the slot is fixed (for example, 5120 bits), and the start of the time slot that propagates the demodulated data 39 is always at the same timing as the start of the broadcast channel
  • the number of data to be time-division multiplexed (data type) is fixed (for example, 4 types).
  • the time-division multiplexed data D is a repetition of four types of fixed-length data.
  • the intermediate processing data power that has been processed up to a predetermined stage in one radio base station apparatus is transmitted to another radio base station apparatus. It is transmitted and processed in a stage following the predetermined stage. Therefore, the processing load can be distributed among a plurality of radio base station apparatuses constituting the radio base station apparatus system.
  • the host device and the interface function can be integrated into one radio base station, the number of control signals corresponding to the host device can be reduced.
  • FIG. 10 is a diagram illustrating a connection example of two radio base station apparatuses according to the second embodiment.
  • the radio base station apparatus c is a master base station
  • the radio base station apparatus d is a support base station. Each works.
  • Radio base station apparatus c and radio base station apparatus d exchange data with each other via data integration / distribution units 5c and 5d.
  • the radio base station apparatus c integrates the data output from the IF unit 6c and the data output from the channel decoding unit 25c by the data integration / distribution unit 5c and transmits the data to the radio base station apparatus d. ing.
  • the radio base station apparatus d receives and identifies the data transmitted from the radio base station apparatus c by the data integration / distribution unit 5d and identifies it to the error correction encoding unit 9d or the error correction decoding unit 28d. Let them enter.
  • the data input to the error correction code section 9d is output after being subjected to error correction coding processing such as turbo coding and convolutional coding, and is input to the data integration / distribution section 5d.
  • the data input to the error correction decoding unit 28d is output after being subjected to error correction decoding processing such as turbo decoding and Viterbi decoding, and input to the data integration / distribution unit 5d.
  • the data after error correction coding and the data after error correction decoding input to the data integration / distribution unit 5d are integrated by the data integration / distribution unit 5d and transmitted to the radio base station apparatus c.
  • Data from the radio base station apparatus d received by the data integration / distribution unit 5c of the radio base station apparatus c is identified by the data integration / distribution unit 5c, and the error correction encoding from the error correction encoding unit 9d is performed.
  • the post-data is input to the channel code unit 12c, and the post-error correction decoding data from the error correction decoding unit 28d is input to the IF unit 6c.
  • the data input to the channel encoding unit 12c is output after the channel encoding process from the CRC processing to the physical channel mapping is performed.
  • the post-channel code data output from the channel code key unit 12c is input to the modulation unit 15c, where modulation processing such as spreading processing is performed.
  • the modulated data output from the modulation unit 15c is input to the TX unit 18c.
  • the modulated data is converted into a transmission radio frequency signal by the TX unit 18c and transmitted from the antenna 31c.
  • the data input to IF section 6c is transmitted to an external host device.
  • part of the functions of the master base station is transferred to the support base station, so that the same effects as those of the first embodiment can be obtained.
  • the power performed by the radio base station apparatus d as the support base station in the error correction coding process and the error correction decoding process is performed by other modulation processes. Demodulation processing, channel encoding processing, or channel decoding processing may be used. However, in the radio base station apparatus d as a support base station, data transmission / reception is not performed by the antenna 31d or IF6c. [0086] (Embodiment 3)
  • the antenna 31c is used for data transmission / reception in the radio base station apparatus c as a master base station, but as a support base station.
  • the antenna 3 Id is not used for data transmission / reception.
  • the present invention is not limited to this, and two wireless base station devices connected to each other may transmit and receive data using antennas.
  • FIG. 11 is a diagram illustrating a connection example of two radio base station apparatuses according to the third embodiment.
  • Radio base station apparatus e and radio base station apparatus f perform data transmission / reception with each other via data integration / distribution units 5e and 5f.
  • the radio base station device e transmits / outputs the data output from the modulation unit 15e to the radio base station device f from the data integration / distribution unit 5e.
  • the radio base station apparatus f receives the data transmitted from the radio base station apparatus e by the data integration / distribution unit 5f and inputs the data from the data integration / distribution unit 5f to the TX unit 18f.
  • the data input to the TX unit 18f is converted into a transmission radio frequency signal and transmitted from the antenna 31f.
  • the radio base station apparatus f transmits the received data obtained by detecting the received radio frequency signal at the RX unit 19f via the antenna 3 If from the data integration / distribution unit 5f to the radio base station apparatus e. .
  • the data received by the data integration / distribution unit 5e is despread and phase compensated by the demodulation unit 22e together with the data input from the RX unit 19e via the antenna 31e. Etc. are demodulated.
  • the demodulated data output from the demodulator 22e is input to the channel decoder 25e, and after channel decoding processing, is input to the error correction decoder 28e.
  • the data input to the error correction decoding unit 28e is input to the IF unit 6e after being subjected to error correction decoding processing such as turbo decoding and Viterbi decoding.
  • the data input to IF section 6e is transmitted to an external host device.
  • the radio base station apparatus in the radio base station apparatus system according to the present embodiment, two radio The base station device e, which transmits and receives data using the antennas 31e and 3 If, respectively, creates a MIMO (Multiple Input Multiple Output) structure. Therefore, in addition to the effect of the first embodiment, the system bandwidth can be increased and the data throughput can be improved.
  • the radio base station apparatus f as a support base station does not send / receive data to / from IF6f! /.
  • Embodiment 2 and the like a connection example of two radio base station apparatuses has been described.
  • the number of radio base station apparatuses to be connected may be three or more.
  • FIG. 12 is a diagram illustrating a connection example of three radio base station apparatuses according to the fourth embodiment.
  • the radio base station device g in the three connected radio base station devices g, h, i, the radio base station device g operates as a master base station, and the radio base station devices h, i operate as support base stations.
  • the radio base station devices h, i operate as support base stations.
  • the radio base station device g, the radio base station device h, and the radio base station device i exchange data with each other via the data integration / distribution unit 5g added to the radio base station device g.
  • Radio base station apparatus g inputs data received by external higher-level apparatus power at IF section 6g to data integration / distribution section 5g, and transmits the data from data integration / distribution section 5g to radio base station apparatus h. Then, it is input to the error correction code key unit 9h of the radio base station apparatus h.
  • the data input to the error correction coding unit 9h is subjected to error correction codes such as turbo coding and convolutional codes. Output data from the error correction code key unit 9h is transmitted to the radio base station apparatus g.
  • the radio base station device g transmits the data from the radio base station device h received by the data integration / distribution unit 5g to the radio base station device i as it is, and the channel coding unit 12 i of the radio base station device i To input.
  • the error correction code from the radio base station device h transmitted from the radio base station device g and received from the error correction coding unit 6h is interleaved and rate-matched by the channel code unit 12i of the radio base station device i.
  • Channel encoding processing such as Channel Mapping is performed.
  • the post-channel code key data output from the channel code key unit 12i is input to the modulation unit 15i and subjected to modulation processing such as spreading processing.
  • the modulated data output from the modulation unit 15 is transmitted to the radio base station apparatus g.
  • Data base of radio base station g The data from the radio base station apparatus i received by the multiplexing / distributing section 5g is input to the TX section 18g of the radio base station apparatus g, converted into a transmission radio frequency signal, and transmitted from the antenna 3lg.
  • FIG. 13 is a diagram showing a configuration example of the data integration / distribution unit 5g in FIG.
  • the data integration / distribution unit 5g uses the selector SEL32 or the data time division multiplexer 33 to separate or multiplex the reception data or transmission data in the radio base station apparatus g.
  • the selector SEL32 outputs the data after error correction coding output from the error correction coding section 9h of the radio base station apparatus h and the modulation section 15i of the radio base station apparatus i.
  • the modulated data is separated.
  • the data time division multiplexer 33 time-division multiplexes the data input from the selector SEL32 and the data input from the IF unit 6g of the radio base station apparatus g.
  • FIGS. 14 to 16 are timing charts showing time division multiplexed data received by the radio base station apparatus g
  • FIGS. 17 to 19 are timings showing time division multiplexed data transmitted by the radio base station apparatus g. It is a chart.
  • FIGS. 14 and 17 correspond to FIG. 7 according to Embodiment 1, and transmit time-division multiplexed data D and data identification information E for identifying time-division multiplexed data D simultaneously. The method is shown.
  • FIGS. 15 and 18 correspond to FIG. 8 according to the first embodiment.
  • the data analysis header (data number information 44, 47 and data size) indicating the data number and data size in the data D after time division multiplexing is shown. This shows the transmission method with data size information 45, 48) added.
  • FIGS. 16 and 19 correspond to FIG. 9 according to the first embodiment.
  • a fixed time slot is assigned to each block, and output data from all blocks is time-division multiplexed and data after time-division multiplexing D
  • the transmission method is shown as follows.
  • the radio base station apparatus g recognizes the data D after time division multiplexing using the data identification information E in the data integration / distribution unit 5g. Separately, the data 49 after error correction encoding from the radio base station device h is transmitted as it is to the radio base station device i, and the modulated data 46a and 46b from the radio base station device are the TX section of the radio base station device g. Input to 18g.
  • radio base station apparatus g recognizes the beginning of the data of each block that has been time-division multiplexed using head recognition header 43, and Data distributed to each block is detected using the data number and data size indicated in the data analysis header.
  • Fig. 15 the header header 43 ("0110"), data number information 44 ("1"), data size information 45 (80 bits), post-modulation data 46a and 46b, and data number Information 47 (“2”), data size information 48 (2060 bits), and data 49 after error correction coding are shown.
  • data number "1" represents the data after modulation of the radio base station apparatus, and the data size is 80 bits.
  • the data number “2” represents the data after the error correction code is transmitted from the radio base station apparatus h, and the data size is 2060 bits.
  • radio base station apparatus g When receiving data D after time division multiplexing using the method of FIG. 16, radio base station apparatus g identifies data D after time division multiplexing by the time slot number, and error from radio base station apparatus h The data after correction coding is transmitted as it is to the radio base station apparatus i, and the modulated data from the radio base station apparatus i is input to the TX unit 18g of the radio base station apparatus g.
  • radio base station apparatus i is channel code unit 12i, and data number “2” is assigned by data number information 53.
  • the given data that is, the data after the error correction code from the error correction code key unit 9h is detected, and the channel code of the data after the error correction code is detected.
  • the head recognition header 43 (“0110"), data number information 50 ("1"), data size information 51 (504 bits), IF section output data 52, and data number information 53 (“2") and Data size information 54 (2060 bits), data 55 after error correction coding, and a section 56 without data transmission are shown.
  • the radio base station apparatus h When receiving the data D after time division multiplexing using the method of Fig. 19, the radio base station apparatus h performs data detection only in the assigned time slot by the error correction encoding unit 9h, Error correction coding of the detected data is performed.
  • the radio base station apparatus i detects data only in the assigned time slot by the channel code unit 12i. Line, channel code of the detected data is performed.
  • data transmission, reception, or transmission / reception is not performed directly between the radio base station apparatuses h and i as the support base stations.
  • a radio base station apparatus g as a master base station performs transmission, reception or transmission / reception between the radio base station apparatuses h and i.
  • the radio base station apparatus g as a master base station has an additional function by the data integration / distribution unit 5g, so that the three radio base station apparatuses can be linked.
  • the data transmission / reception power between two support base stations is not performed directly, but only through one master base station. explained.
  • the present invention is not limited to this, or data transmission / reception between the supporting base stations may be performed directly.
  • FIG. 20 is a diagram illustrating a connection example of three radio base station apparatuses according to the fifth embodiment.
  • the radio base station device j is the master base station
  • the radio base station devices k, 1 are the support base stations. It shall be.
  • Radio base station apparatus j, radio base station apparatus k, and radio base station apparatus 1 directly transmit and receive data between all radio base station apparatuses.
  • Radio base station apparatus j directly transmits data received by external higher-level apparatus power at IF section 6j to radio base station apparatus k and inputs it to error correction encoding section 9k of radio base station apparatus k.
  • Data input to the error correction code key unit 9k of the radio base station apparatus k is subjected to error correction code key such as turbo coding and convolutional code key.
  • error correction code key such as turbo coding and convolutional code key.
  • the output data from the error correction code key unit 9k is directly transmitted to the radio base station device 1 and input to the channel coding unit 121 of the radio base station device 1.
  • Data input to the channel coding unit 121 of the radio base station apparatus 1 is subjected to channel coding processing such as interleaving, rate matching, and physical channel mapping.
  • the post-channel code key data output from the channel code key unit 121 is input to the modulation unit 151 and subjected to modulation processing such as spreading processing.
  • the modulated data output from modulation section 151 is directly transmitted to radio base station apparatus j, and input to TX section 1 example of radio base station apparatus j.
  • the modulated data input to the TX unit 13 ⁇ 4 of the radio base station apparatus j is converted into a transmission radio frequency signal and transmitted from the antenna 31j.
  • the radio base station apparatus g since the radio base station apparatus g performs data transmission / reception between the radio base station apparatuses h and i, it is necessary to add the data integration / distribution unit 5g. In this embodiment, since data transmission / reception is directly performed between the radio base station apparatuses h and i, it is not necessary to add the data integration / distribution unit 5g. Also, one type of data can be sent and received between each radio base station device.
  • the present invention is not limited to this, and the reception processing is shifted by shifting the processing on the reception side. It is also possible to reduce the processing load.
  • the radio base station apparatuses k and 1 as the support base stations data is not transmitted and received by the antennas 3 lk, 31P ⁇ IF6k, 61, respectively.
  • each radio base station device is performed by connecting four or more radio base station devices. It is also possible to further reduce the load.
  • each of the two radio base station apparatus powers transmits / receives data using an antenna.
  • the frequency of data transmitted / received by each antenna is described.
  • the band may be different for each radio base station apparatus.
  • FIG. 21 is a diagram illustrating a connection example of two radio base station apparatuses according to the sixth embodiment.
  • Radio base station apparatuses m and n each have a system bandwidth of 5 MHz and operate in each band. That is, the transmitted / received radio frequency signal at the antenna 31m of the radio base station apparatus m and the transmitted / received radio frequency signal at the antenna 31 ⁇ of the radio base station apparatus n differ in the propagated frequency band.
  • Data output from IF section 6m of radio base station apparatus m is input to error correction code section 9m or data integration / distribution section 5m.
  • the data input to the error correction encoding unit 9m is input to the channel code input unit 12m after error correction encoding.
  • Data channel-coded by the channel code key unit 12m is input to the modulation unit 15m. After modulation processing such as spreading processing is performed, the data is converted into a transmission radio frequency signal by the TX unit 18m, and the antenna 31m Sent from.
  • the received radio frequency signal that was received by the antenna 31m force was detected by the RX unit 19m.
  • the received data obtained by the detection is input to the demodulation unit 22m or the data integration / distribution unit 5m.
  • the demodulator 22m receives as much output data as the RX unit 19m and the output data from the RX unit 19 ⁇ of the radio base station apparatus n received by the data integration / distribution unit 5m.
  • the demodulation unit 22m inputs the received data after demodulation processing such as despreading and phase compensation, and then inputs the received data to the channel decoding unit 25m to perform channel decoding processing.
  • the data after channel decoding is input to the error correction decoding unit 28m, and after error correction decoding processing such as turbo decoding processing and Viterbi decoding processing, it is input to the IF unit 6m and transmitted to the host device.
  • Data integration / distribution unit 5m integrates the output data from IF unit 6m and the output data of RX unit 19m and transmits it to radio base station apparatus n, and also transmits data from radio base station apparatus n. Receives output data from the integration / distribution unit 5n and distributes the data to the demodulation unit 22m or IF unit 6m.
  • Radio base station apparatus n distributes data from radio base station apparatus m received by data integration / distribution section 5n to error correction coding section 9n or demodulation section 22 ⁇ .
  • the error correction code unit 9 ⁇ inputs the data distributed from the data integration / distribution unit 5 ⁇ to the channel code input unit 12 ⁇ after error correction coding processing such as turbo coding and convolution coding.
  • error correction coding processing such as turbo coding and convolution coding.
  • the post-error correction code input data input to the channel code key unit 12 ⁇ is subjected to channel coding processing and input to the modulation unit 15 ⁇ .
  • the modulation unit 15 ⁇ the input channel code post-modulation data is subjected to modulation processing such as spreading processing, and then is converted into a transmission radio frequency signal by the flange unit 18 ⁇ and transmitted from the antenna 31 ⁇ .
  • the received radio frequency signal received by the antenna 3 In is detected by the RX unit 19 ⁇ .
  • the received data obtained by the detection is input to the demodulator 22 ⁇ or the data integration / distribution unit 5 ⁇ .
  • the demodulation unit 22 ⁇ demodulates the data from the RX unit 19 ⁇ together with the output data from the RX unit 19m of the radio base station apparatus m distributed from the data integration / distribution unit 5 ⁇ , and channel-demodulates the demodulated data. Input to unit 25 ⁇ to perform channel decoding.
  • the data decoded by the channel decoding unit 25 ⁇ is input to the error correction decoding unit 28 ⁇ , and after error correction decoding such as turbo decoding and Viterbi decoding, the data integration / distribution unit 5 ⁇ Integrated with the output data from the modulation unit 15 ⁇ and the output data from the RX unit 19 ⁇ . Sent to ground station device m.
  • error correction decoding such as turbo decoding and Viterbi decoding
  • each subcarrier belonging to a different frequency band can be processed by a different radio base station apparatus. Therefore, it is possible to create a radio base station device having twice the system bandwidth.
  • the user can receive two radios. Since it can be distributed to base station apparatuses, the number of users that can be processed as a whole can be increased.
  • radio base station apparatuses m and n are the same in order to maintain subcarrier orthogonality. Up-conversion Z down-conversion must be performed with a sine wave.
  • FIG. 22 is a diagram illustrating an internal configuration example of the radio base station apparatus according to Embodiment 7.
  • the TX unit 18 and the RX unit 19 include a synthesizer unit (not shown).
  • the synthesizer unit uses the clock generation unit 34 as a source oscillation (reference) and performs the up-conversion Z down-conversion. Generate a sine wave for
  • the TX unit 18 converts the data into a transmission radio frequency signal using the reference clock F generated by the clock generation unit 34 and transmits it from the antenna 31.
  • the RX unit 19 detects the received radio frequency signal using the reference clock F generated by the clock generation unit 34.
  • the reference clock F generated by the clock generation unit 34 is also transmitted to other radio base station devices, and the other radio base station devices use this reference clock F to transmit the TX unit 1
  • FIG. 23 is a diagram illustrating an internal configuration example of the radio base station apparatus radio base station apparatus according to Embodiment 8.
  • FIG. 23 is different from FIG. 22 according to the seventh embodiment in that a clock generation unit 35 is provided instead of the clock generation unit 34 that generates the reference clock F.
  • the clock generation unit 35 generates a reference clock F to be input to the TX unit 18 and the RX unit 19, and generates a common clock G to be used in the data integration / distribution unit 5 based on the reference clock F. To do.
  • the data integration / distribution unit 5 performs time division multiplexing of data using the common clock G generated by the clock generation unit 35.
  • FIG. 24 shows an example of intermediate processing data that is time-division multiplexed using the common clock G generated by the clock generation unit 35. Since the radio base station apparatus that has received the signal synchronized with the common clock G as shown in FIG. 24 can regenerate the reference clock F by recognizing the change point of these intermediate processing data, Thus, it is not necessary to transmit the reference clock F to other radio base station devices.
  • one radio base station apparatus generates the common clock G in addition to the reference clock F, and based on the common clock G, the time The divided and multiplexed intermediate processing data is transmitted to another radio base station apparatus. Therefore, in addition to the effect of the seventh embodiment, there is an effect that it is not necessary to transmit the reference clock F to another radio base station apparatus.
  • the present invention is used in a mobile communication system using an existing W-CDMA system and a future mobile communication system using a Super3G system, such as a radio base station system for a mobile phone. Is possible.

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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 système d'appareil de station de base radio, dans lequel des charges de traitement sont décentralisées et le nombre de signaux de commande provenant d'un appareil hôte est réduit. L'appareil de station de base radio (a) transmet des données traitées intermédiaires (D), qui ont été traitées jusqu'à une étape prédéterminée, à un autre appareil de station de base radio (b) par l'intermédiaire d'un canal. L'autre appareil de station de base radio (b) reçoit les données traitées intermédiaires (D) et les soumet au traitement d'une étape suivant l'étape prédéterminée précédente.
PCT/JP2006/322541 2006-11-13 2006-11-13 Système d'appareil de station de base radio WO2008059554A1 (fr)

Priority Applications (3)

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CNA2006800554909A CN101502165A (zh) 2006-11-13 2006-11-13 无线基站装置系统
PCT/JP2006/322541 WO2008059554A1 (fr) 2006-11-13 2006-11-13 Système d'appareil de station de base radio
JP2008544017A JPWO2008059554A1 (ja) 2006-11-13 2006-11-13 無線基地局装置システム

Applications Claiming Priority (1)

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PCT/JP2006/322541 WO2008059554A1 (fr) 2006-11-13 2006-11-13 Système d'appareil de station de base radio

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Cited By (1)

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JP2010081599A (ja) * 2008-09-12 2010-04-08 Koninkl Kpn Nv ユーザ・データをユーザ端末とワイヤレスで交換するための通信システムおよび方法

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JP2001285172A (ja) * 2000-03-28 2001-10-12 Nec Corp 基地局における負荷分散システム
JP2003169364A (ja) * 2001-12-04 2003-06-13 Hitachi Kokusai Electric Inc 無線基地局
JP2005159545A (ja) * 2003-11-21 2005-06-16 Mitsubishi Electric Corp 移動体通信システム、マスタ基地局及びスレーブ基地局
JP2005223661A (ja) * 2004-02-06 2005-08-18 Hitachi Kokusai Electric Inc 無線基地局装置
JP2005348150A (ja) * 2004-06-03 2005-12-15 Matsushita Electric Ind Co Ltd 無線網制御システム、無線網制御装置、および基地局

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JP2001285172A (ja) * 2000-03-28 2001-10-12 Nec Corp 基地局における負荷分散システム
JP2003169364A (ja) * 2001-12-04 2003-06-13 Hitachi Kokusai Electric Inc 無線基地局
JP2005159545A (ja) * 2003-11-21 2005-06-16 Mitsubishi Electric Corp 移動体通信システム、マスタ基地局及びスレーブ基地局
JP2005223661A (ja) * 2004-02-06 2005-08-18 Hitachi Kokusai Electric Inc 無線基地局装置
JP2005348150A (ja) * 2004-06-03 2005-12-15 Matsushita Electric Ind Co Ltd 無線網制御システム、無線網制御装置、および基地局

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010081599A (ja) * 2008-09-12 2010-04-08 Koninkl Kpn Nv ユーザ・データをユーザ端末とワイヤレスで交換するための通信システムおよび方法

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