WO2006114018A1 - Echangeur de donnees en bandes de base multiples et son procede - Google Patents

Echangeur de donnees en bandes de base multiples et son procede Download PDF

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Publication number
WO2006114018A1
WO2006114018A1 PCT/CN2005/000574 CN2005000574W WO2006114018A1 WO 2006114018 A1 WO2006114018 A1 WO 2006114018A1 CN 2005000574 W CN2005000574 W CN 2005000574W WO 2006114018 A1 WO2006114018 A1 WO 2006114018A1
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WO
WIPO (PCT)
Prior art keywords
link
data
exchange
carrier
synchronization
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/CN2005/000574
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English (en)
Chinese (zh)
Other versions
WO2006114018A8 (fr
Inventor
Si Zhang
Zhonglei Shao
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.)
ZTE Corp
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ZTE 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 ZTE Corp filed Critical ZTE Corp
Priority to PCT/CN2005/000574 priority Critical patent/WO2006114018A1/fr
Priority to CN2005800491252A priority patent/CN101142834B/zh
Publication of WO2006114018A1 publication Critical patent/WO2006114018A1/fr
Anticipated expiration legal-status Critical
Publication of WO2006114018A8 publication Critical patent/WO2006114018A8/fr
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code

Definitions

  • the invention relates to a multi-channel baseband data exchanger and a multi-baseband data exchange method, in particular to configurable multi-channel in-phase data and orthogonal data used in a TD-SCDMA base station device in the communication field (In Phase Quadrature referred to as IQ) Baseband data switch.
  • IQ In Phase Quadrature
  • the physical layer is at the lowest level, and its main task is to provide data transmission services for the upper layer and other basic processes.
  • the hardware system that implements the physical layer function includes an antenna subsystem, a radio frequency (RF) subsystem (consisting of several RF links), a baseband subsystem (consisting of several baseband links), a base station control system, and a base station.
  • RF radio frequency
  • baseband subsystem consisting of several baseband links
  • base station control system a base station.
  • the interface Interface Unit NoteB referred to as Iub
  • the transmission subsystem and the control subsystem are Among these subsystems, such as RF subsystems, baseband subsystems, etc., have multiple channels (these channels are called communication links).
  • a multi-baseband data switch that implements IQ data exchange between a communication link between an RF subsystem and a baseband subsystem.
  • the switch is implemented with a programmable logic chip, which has a small hardware scale, which greatly reduces power consumption and high switching efficiency.
  • a multi-baseband data switch comprising a data receiving and synchronization header checking unit, a link switching unit, a carrier switching unit, and a link and carrier switching parameter storage unit;
  • the data receiving and synchronization header checking unit is connected to the link switching unit, configured to detect whether a synchronization sequence in the exchange data arrives, and transparently transmit the exchange data to the link switching unit; the wave switching unit is connected, An exchange parameter for storing link switching and carrier switching, the switching parameter is used to match each link and carrier exchange address; between the switching units, when the first synchronization sequence arrives, it will be stored And exchanging data in the link and carrier switching parameter storage unit, and determining a matching address of each link and carrier exchange according to the switching parameter, and performing data link channel switching; the carrier switching unit is used to Carrier switching of the exchanged data is performed when the first synchronization sequence arrives.
  • a multi-baseband data exchange method in which exchange parameters are pre-stored in a link and carrier switching parameter storage unit, and the exchange parameters are used to match each link and carrier-exchanged address, the multi-baseband
  • Step 1 The data receiving and synchronization header checking unit dynamically detects whether the synchronization sequence of the carrier of the input link arrives; if a synchronization sequence of a certain carrier is detected on the link, a synchronization indication signal is generated, and then the synchronization is included
  • the exchange data of the sequence is transmitted to the link switching unit;
  • Step 2 When the link switching unit receives the first synchronization indication signal, the input link is exchanged to the RAM of the designated output link according to the exchange parameter, and the exchange data is transmitted to the location.
  • Step 3 When receiving the first synchronization indication signal, the carrier switching unit extracts the carrier exchange data that should be taken at the moment from the RAM memory of the output link according to the exchange parameter, and switches to the specified carrier position. .
  • the present invention provides a configurable baseband data switch and method for realizing IQ baseband data between an RF subsystem and a baseband subsystem communication link in a TD-SCDMA mobile communication system, and data receiving and
  • the synchronization header check unit dynamically detects the synchronization sequence of each carrier, so that the baseband data switch determines whether there is data on the link, and generates a synchronization indication signal.
  • the link switching unit receives the first synchronization indication signal, according to the exchange parameter Switching the input link to the designated output link and transmitting the exchanged data to the carrier switching unit; when receiving the first synchronization indication signal, the carrier switching unit exchanges the exchanged data to the designated carrier according to the exchange parameter Go to the location.
  • the switching parameters can be dynamically configured.
  • the maximum capacity can be used to exchange 16 links and three carriers.
  • the link data width is 10bi t, and the data rate can reach 61.44MHz or higher.
  • the RF subsystem and baseband can be realized. Two-way exchange between subsystems.
  • the baseband data switch is implemented by 600,000 gates of programmable logic devices, and the conventional implementation method requires more than 1.8 million gates of programmable logic devices.
  • the hardware of the present invention is small in scale, and thus has low power consumption, high switching efficiency, and low cost. .
  • the invention also has link data alignment, which is useful for improving the performance of the TD-SCDMA system.
  • the invention has been successfully applied in TD-SCDMA systems.
  • 1 is a schematic diagram of the IQ baseband data structure of the present invention
  • FIG. 2 is a schematic structural view of a configurable multi-channel baseband switch of the present invention
  • FIG. 3 is a schematic diagram of a usage environment of a configurable multi-path baseband data switch according to the present invention.
  • the data structure of the IQ baseband data is shown in Fig. 1.
  • the IQ baseband data is composed of chips, each of which is composed of three carriers (Carr ier ), and each carrier data is composed of antenna data.
  • the exchange of IQ baseband data is actually the exchange of IQ baseband data of a certain carrier on a communication link on the RF subsystem side (or the baseband subsystem side) to the baseband subsystem side (or the RF subsystem side).
  • a carrier on a communication link is shown in Fig. 1.
  • a multi-baseband data switch includes a data receiving and synchronization header checking unit, a link switching unit, a carrier switching unit, and a link and carrier switching parameter storage unit:
  • the data receiving and synchronization header checking unit is connected to the link switching unit, and is configured to detect whether the synchronization sequence in the exchange data arrives, if the synchronization sequence arrives to generate the synchronization indication signal, and transparently transmit the exchange data to the link switching unit.
  • the synchronization sequence is composed of 16 G or 1 specific sequences which are serially distributed over the 2b i t bits of the 16 exchange data, the exchange data having a width of 10 bi t.
  • a synchronization sequence of one carrier is completely received, and three sets of such different synchronization sequences on each link respectively represent three different carriers;
  • the exchanged data is alternately transmitted in the IQ link.
  • the function of the synchronization indication signal is: the first synchronization indication signal tells the link switch and the carrier switch to start working, and simultaneously synchronizes the two switches to prevent the switch from being misaligned when the carrier data is used; thereafter, the synchronization indication signal is used for synchronization. Two switches to prevent the switch from misaligning data.
  • Link and carrier switching parameter storage units are respectively associated with the link switching unit and the carrier switching unit a connection, configured to store an exchange parameter of a link exchange and a carrier exchange, where the exchange parameter is used to match each link and a carrier exchange address, the storage unit is a storage array, and each link is stored in an address order.
  • Carrier switching exchange parameters one address stores an exchange number; the exchange parameter has a bit width of 8Bit, consisting of link switching parameters and carrier switching parameters, the upper five bits of the switching parameter indicate link switching parameters, and the lower three-bit carrier switching parameter.
  • the switching parameters of the link and carrier exchange are data written in the serial port to the carrier switching parameter storage unit.
  • the link switching unit is connected between the data receiving and synchronization header checking unit and the carrier switching unit, and configured to take out the exchange data stored in the link and the carrier switching parameter storage unit when the first synchronization sequence arrives, And determining, according to the exchange parameter, a matching address of each link and carrier exchange, and performing data link channel exchange; that is, exchanging exchange data of the input link to a RAM memory of the corresponding output link according to the provided exchange parameter (the memory With the FIFO function, the exchange data is stored in the RAM memory in the carrier order, and the link switching unit has the function of aligning the exchange data.
  • the carrier switching unit is configured to perform carrier switching of the exchanged data when the first synchronization sequence arrives.
  • the carrier exchange for realizing the link exchange data is based on the provided exchange parameters, and the carrier exchange data which should be taken at this moment is taken out from the RAM memory of the link and output to the corresponding carrier position.
  • the usage environment of the configurable multi-baseband data switch is shown in Figure 3.
  • One side of the switch is the RF subsystem and the other side is the baseband subsystem.
  • the data of a carrier on a link of the RF subsystem passes through the baseband data switch, which exchanges the IQ baseband data to the designated link and carrier according to the configured switching parameters; and vice versa.
  • the exchange parameters need to be properly configured.
  • the correspondence between the switching parameters and the link and carrier is described in the table below.
  • Table 1 illustrates the structure of the exchange parameters.
  • the bit width of the exchange parameter is 8 bits; where bitO, bitl and bit2 represent the carrier number in the input link (up to 3 carriers); Bit3, bit4, bit5, bit6 and bit7 represent the input link number (up to 16 links) ). Correspondence between input link and switching parameters
  • Table 2 and Table 3 illustrate the correspondence between the input link and the input carrier and the switching parameters.
  • Table 4 Correspondence between the output link, the address of the carrier and the storage unit, and the output carrier corresponding to the output link corresponding to the storage unit address
  • the switching parameters are dynamically configured by the serial port in the link and carrier switching parameter storage unit.
  • Step 2 When the link switching unit receives the first synchronization sequence, the input link is exchanged to the RAM memory of the designated output link according to the exchange parameter, and the exchange data is transmitted to the carrier switching unit;
  • Step 3 When receiving the first synchronization sequence, the carrier switching unit extracts the carrier exchange data that should be taken at this time from the RAM memory of the output link according to the exchange parameter, and switches to the designated carrier position.
  • the invention adopts the algorithm of the RAM memory to realize the synchronization sequence detection function, and the algorithm realizes the small hardware scale; in the above step 1, detecting whether the synchronization sequence arrives is detected by the RAM memory algorithm, and the specific steps are as follows:
  • Step 1 0 Pre-store the reference sequence of the synchronization sequence of the three carriers into the three registers of the data receiving and synchronization header checking unit;
  • Step 11 The data receiving and synchronization header checking unit writes the exchanged data sequentially received into the RAM memory in sequence;
  • Step 1 3 The data receiving and synchronization header checking unit will acquire the synchronization sequence and the pre-stored number Comparing according to a reference sequence of synchronization sequences of three carriers in three registers of the receiving and synchronizing header checking unit;
  • Step 14 When the acquired synchronization sequence is consistent with the reference data of any of the three carriers in the three registers of the data receiving and synchronization header check unit, the data receiving and synchronization header checking unit considers that the chain is detected. A synchronization sequence of carriers arrives on the road.
  • the first synchronization indication signal in the foregoing step 1 is used to notify the link switching unit and the carrier switching unit to start working, and is used for the link switching unit and the carrier switching unit to perform synchronization operations.
  • the other synchronization indication signals other than the first synchronization indication signal in the above step 1 are used for operation synchronization of the link switching unit and the carrier switching unit.
  • new switching parameters can be dynamically written to the link and carrier switching parameter storage units; the switches are immediately exchanged for new switching parameters.
  • the switching parameters can be dynamically configured while the baseband data switch is operating
  • the switch is implemented with 600,000 gates of programmable logic devices, and the conventional implementation method requires more than 1.8 million gates of programmable logic.
  • the hardware of the present invention is small in scale, thereby reducing power consumption, high switching efficiency, and low cost. .
  • the invention also has link data alignment, which is helpful for improving the performance of the TD-SCDMA system.
  • the invention realizes flexible exchange of IQ baseband data between communication links between the RF subsystem and the baseband subsystem in the TD-SCDMA mobile communication system.

Landscapes

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

Abstract

L’invention concerne un échangeur de données en bandes de base multiples et un procédé d’échange de données en bandes de base multiples. L’échangeur comporte un module de réception de données et de contrôle synchrone d’en-têtes, un module d’échange de liaison, un module d’échange de porteuse et un module de mémorisation de paramètres d’échange de liaison et de porteuse. Le module de réception de données et de contrôle synchrone d’en-têtes sert à détecter l’arrivée d’une séquence synchrone en vue d’identifier l’arrivée de données de liaison et de générer un signal d’indication synchrone. Le module d’échange de liaison sert à effectuer un échange de canaux de liaison de données. Le module d’échange de porteuse sert à effectuer un échange de porteuse des données dont la liaison a été échangée. Le module de mémorisation de paramètres d’échange de liaison et de porteuse sert à mémoriser les paramètres extérieurs associés à l’échange de liaison et à l’échange de porteuse. L’invention peut être mise en œuvre par un réseau de portes programmables par l’utilisateur (FPGA) compact, de faible consommation, à haut rendement (maximum de trois échanges de porteuse dans seize liaisons, largeur de bande de 10 bits, débit de données jusqu’à 61,44 MHz) et de faible coût.
PCT/CN2005/000574 2005-04-26 2005-04-26 Echangeur de donnees en bandes de base multiples et son procede Ceased WO2006114018A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2005/000574 WO2006114018A1 (fr) 2005-04-26 2005-04-26 Echangeur de donnees en bandes de base multiples et son procede
CN2005800491252A CN101142834B (zh) 2005-04-26 2005-04-26 多路基带数据交换器及多路基带数据交换方法

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PCT/CN2005/000574 WO2006114018A1 (fr) 2005-04-26 2005-04-26 Echangeur de donnees en bandes de base multiples et son procede

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WO2006114018A8 WO2006114018A8 (fr) 2007-11-01

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1346219A (zh) * 2000-09-29 2002-04-24 华为技术有限公司 一种全球移动通信系统的基站收发信机
EP0835557B1 (fr) * 1994-12-28 2004-06-16 Telefonaktiebolaget LM Ericsson (publ) Recepteur a conversion directe et a compensation numerique
CN1543249A (zh) * 2003-03-17 2004-11-03 �����ɷ� 具基带组件、射频组件及其间接口的无线传送及接收装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835557B1 (fr) * 1994-12-28 2004-06-16 Telefonaktiebolaget LM Ericsson (publ) Recepteur a conversion directe et a compensation numerique
CN1346219A (zh) * 2000-09-29 2002-04-24 华为技术有限公司 一种全球移动通信系统的基站收发信机
CN1543249A (zh) * 2003-03-17 2004-11-03 �����ɷ� 具基带组件、射频组件及其间接口的无线传送及接收装置

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CN101142834A (zh) 2008-03-12
CN101142834B (zh) 2010-05-12
WO2006114018A8 (fr) 2007-11-01

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