WO2009067859A1 - Procédé et appareil pour configurer un canal de données - Google Patents

Procédé et appareil pour configurer un canal de données Download PDF

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Publication number
WO2009067859A1
WO2009067859A1 PCT/CN2008/001822 CN2008001822W WO2009067859A1 WO 2009067859 A1 WO2009067859 A1 WO 2009067859A1 CN 2008001822 W CN2008001822 W CN 2008001822W WO 2009067859 A1 WO2009067859 A1 WO 2009067859A1
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WIPO (PCT)
Prior art keywords
data
channel
information
bbu
designated
Prior art date
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PCT/CN2008/001822
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English (en)
Chinese (zh)
Inventor
Li Xu
Bin Luo
Xiaolin Liu
Lei Tao
Hongbo Wang
Ting Wang
Ju Fan
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Datang Mobile Communications Equipment Co., Ltd
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Application filed by Datang Mobile Communications Equipment Co., Ltd filed Critical Datang Mobile Communications Equipment Co., Ltd
Publication of WO2009067859A1 publication Critical patent/WO2009067859A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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 the field of communications technologies, and in particular, to a data channel synchronization configuration technology. Background technique
  • a base station is an important component of a mobile communication network, and is connected between a user terminal and a base station controller for transmitting and receiving wireless signals, enabling the user terminal to access the wireless network, and simultaneously completing the connection with the base station controller. Information interaction.
  • a BBU (Bandwidth Based Unit) baseband pool is composed of a plurality of BBUs, and a BBU baseband pool and a BIU (BBU Interface Unit) are connected through a backplane.
  • BBU Bandwidth Based Unit
  • BIU BBU Interface Unit
  • Each optical port is connected to an RRU (Radio Remote Unit) through a fiber.
  • RRU Radio Remote Unit
  • Each RRU can be connected in series with multiple RRUs to achieve serial connection.
  • the RRU has one or six physical antennas, and each physical antenna has six intermediate frequency channels.
  • the uplink and downlink I/Q (In-phase/Quadrate) data are interleaved inside the chips of the TD-SCDMA uplink and downlink subframes, and the BBU is responsible for processing the I/Q data.
  • the BIU is responsible for aggregating and distributing I/Q data, and the RRU is responsible for sending and receiving I/Q data.
  • the BBU performs I/Q data processing with a 1CA granularity.
  • the CA is an I/Q data unit that is sequentially stored in the chips of the TD-SCDMA subframe, that is, an in-phase orthogonal data unit.
  • the I/Q data width of 1CA is 16bit, and the I/Q data of 1CA is called CA data, then the CA data corresponds to the intermediate frequency channel of one carrier data on one physical antenna, and the position of each CA data in the chip.
  • the identifier called the CA bit.
  • the number of CAs that can be transmitted in each chip depends on the fiber capacity of the optical port on the BIU.
  • CA num (((R/16 )*(8/10))/1.28M)/2-l (1) where R represents the fiber capacity and CA num represents the number of CAs supported by the fiber. According to formula (1), for 1.25G fiber, one chip can support transmission of up to 23 valid CA data; for 2.5G fiber, one chip can support transmission of up to 47 valid CA data.
  • the RRU receives data from an intermediate frequency channel of the physical antenna.
  • the RRU solves the CA data in each chip in the subframe, and passes through the BIU.
  • the CA data is sent to one or more BBUs for processing; in the downlink direction, in a TD-SCDMA downlink subframe, the BBU sends the processed one subframe, including several chip I/Q data, to the BIU.
  • the distribution of the BIU, the I/Q data is sent to one or more RRUs, which solve the CA data in the chip and transmit the CA data from the IF channel of the physical antenna.
  • the prior art cannot implement I/Q data synchronization between the RRU and the BBU in the baseband remote base station.
  • the I/Q data between the RRU and the BBU needs to be combined with the antenna data, the I/Q data cannot be synchronized. That is, the prior art cannot enable the RRU to send the data of the specified carrier on the IF channel of the different physical antennas to the designated BBU for processing, and the carrier data processed on the BBU cannot be correctly sent to the physical antenna IF channel of the designated RRU.
  • the embodiment of the invention provides a data channel configuration method and device for synchronizing I/Q data between an RRU and a BBU in a baseband remote base station.
  • the embodiment of the invention provides a data channel configuration method, including:
  • the BBU interface unit BIU connected to the designated RRU Configuring, on the optical port, indication information that the in-phase orthogonal data unit CA data on each data channel is processed by the designated BBU;
  • the physical antenna number and the intermediate frequency channel number information respectively occupied by the CA data on each of the data channels are configured on the designated RRU.
  • An embodiment of the present invention provides a data channel configuration apparatus, including:
  • a data channel number determining module configured to determine, according to a carrier on the baseband processing unit BBU specified in advance for the cell, and a physical antenna on the radio remote unit RRU specified in advance for the cell, determine the number of data channels that the cell needs to occupy;
  • a first channel information configuration module configured to configure, on a BBU optical interface of the BBU interface unit connected to the designated RRU, a second channel information configuration module, where the CA data on each data channel is processed by the designated BBU, Configuring, on the designated BBU, the carrier index of the CA data processed by the designated BBU on each of the data channels, and the logical antenna number information used by the CA data on each of the data channels;
  • a third channel information configuration module configured to configure physical antenna number and IF channel number information respectively occupied by the CA data on each of the data channels on the designated RRU.
  • An embodiment of the present invention further provides an operation and maintenance system, including:
  • a data channel number determining module configured to determine, according to a carrier on the baseband processing unit BBU specified in advance for the cell, and a physical antenna on the radio remote unit RRU specified in advance for the cell, determine the number of data channels that the cell needs to occupy;
  • a first channel information configuration module configured to configure, on a BIU optical port of the BBU interface unit connected to the designated RRU, indication information that the CA data on each data channel is processed by the designated BBU;
  • a second channel information configuration module configured to configure, on the designated BBU, a carrier index of the CA data processed by the designated BBU on each of the data channels, and a logical antenna used by the CA data on each of the data channels respectively Number information
  • a third channel information configuration module configured to configure each of the data channels on the designated RRU The physical antenna number and the IF channel number information occupied by the CA data on the track.
  • the embodiment of the invention further provides a BBU interface unit, including:
  • a first channel information receiving module configured to receive indication information that the CA data on each data channel configured on the optical port of the BBU interface unit is processed by the designated BBU;
  • a first channel information storage module configured to store the information received by the first channel information receiving module.
  • the embodiment of the invention further provides a baseband processing unit, including:
  • a second channel information receiving module configured to receive, by the baseband processing unit configured on the baseband processing unit, a carrier index for processing CA data on each data channel, and a CA data used on each of the data channels respectively Logical antenna number information;
  • a second channel information storage module configured to store the information received by the second channel information receiving module.
  • An embodiment of the present invention further provides a radio remote unit, including:
  • a third channel information receiving module configured to receive physical antenna number and IF channel number information respectively occupied by CA data on each data channel configured on the radio remote unit;
  • a third channel information storage module configured to store the information received by the third channel information receiving module.
  • the embodiment of the invention further provides an uplink data synchronization method, including:
  • the RRU receives the CA data on the corresponding intermediate frequency channel of the corresponding physical antenna according to the physical antenna number and the intermediate frequency channel number information respectively occupied by the CA data on each of the pre-configured data channels, and sends the CA data to the BIU;
  • the BIU receives the CA data, and sends the CA data to the designated BBU according to the indication information processed by the specified BBU according to the CA data on each data channel configured in advance on the optical port connected to the RRU;
  • the designated BBU receives and processes the carrier index of the CA data on each of the data channels and the logical antenna number information respectively used by the CA data on each of the data channels according to the pre-configured BBU.
  • CA data is a radio remote unit, including:
  • a third configuration information storage module configured to store each of the data channels configured for it in advance
  • a first receiving module configured to query, in the information stored by the third configuration information storage module, a physical antenna number and an intermediate frequency channel number corresponding to the CA data, and receive the physical antenna and the intermediate frequency channel corresponding to the CA data.
  • the CA data is sent, and the CA data is sent to the BBU interface unit.
  • the embodiment of the invention further provides a BBU interface unit, including:
  • a first configuration information storage module configured to store indication information that the CA data on each data channel configured in advance on the optical port is processed by the designated baseband processing unit BBU;
  • a first forwarding module configured to query, in the information stored by the first configuration information storage module, a designated BBU of CA data sent by the RRU, and forward the CA data to the designated BBIL
  • the embodiment of the invention further provides a baseband processing unit, including:
  • a second configuration information storage module configured to store a carrier index for processing CA data on each data channel and a logical antenna number information used by the CA data on each of the data channels for the baseband processing unit configured in advance ;
  • a first processing module configured to query, in the information stored by the second configuration information storage module, a carrier index and a logical antenna number corresponding to the CA data sent by the BBU, and according to the carrier and the logical antenna corresponding to the CA data
  • the CA data is received and processed.
  • the embodiment of the invention further provides a downlink data synchronization method, including:
  • the BBU processes the CA data according to the pre-configured BBU processing the carrier index of the CA data on each data channel and the logical antenna number information used by the CA data on each of the data channels, and processes the processed CA.
  • Data is sent to the BIU;
  • the BIU receives the CA data, and sends the CA data to the designated RRU according to the indication information processed by the designated BBU according to the CA data on each data channel configured on the optical port connected to the designated RRU.
  • the designated RRU receives the CA data, and sends the CA data on a corresponding intermediate frequency channel of the corresponding physical antenna according to the physical antenna number and the intermediate frequency channel number information respectively occupied by the CA data on each of the pre-configured data channels. Go out.
  • An embodiment of the present invention further provides a radio remote unit, including:
  • a third configuration information storage module configured to store physical antenna numbers and intermediate frequency channel number information respectively occupied by CA data on each data channel configured for the foregoing;
  • a second receiving module configured to query, in the information stored by the third configuration information storage module, a physical antenna number and an intermediate frequency channel number corresponding to the CA data sent by the BIU, and corresponding to the physical data of the CA data Send out on the IF channel.
  • the embodiment of the invention further provides a BBU interface unit, including:
  • a first configuration information storage module configured to store indication information that the CA data on each data channel configured in advance on the optical port is processed by the designated baseband processing unit BBU;
  • a second forwarding module configured to query, in the information stored by the first configuration information storage module, a designated radio remote unit RRU of the CA data sent by the BBU, and forward the CA data to the designated RRU.
  • the embodiment of the invention further provides a baseband processing unit, including:
  • a second configuration information storage module configured to store a carrier index of the CA data processed on each data channel by the baseband processing unit configured in advance, and a logical antenna number respectively used by the CA data on each of the data channels Information
  • a second processing module configured to query, in the information stored by the second configuration information storage module, a carrier index and a logical antenna number corresponding to the CA data, and process the CA according to the carrier and the logical antenna corresponding to the CA data Data, and the processed CA data is sent to the BBU interface unit BIU.
  • the data channel configuration method and device when configuring a data channel for a cell, determine the number of data channels that the cell needs to occupy according to the carrier on the BBU specified in the cell and the physical antenna on the RRU; The number of data channels occupied by the cell, the specified carrier, the use of the designated physical antenna and the IF channel on the designated physical antenna, and the merging of the antenna data.
  • 1 is a schematic structural diagram of an existing baseband remote base station system
  • FIG. 2 is a flowchart of a data channel configuration method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of an uplink data synchronization method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a downlink data synchronization method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a optical port register according to Embodiment 1 of the present invention.
  • Figure 6 is a schematic diagram of the processing format of the I/Q data of the 3C6A type BBU;
  • FIG. 7 is a schematic structural diagram of a BBU register according to Embodiment 1 of the present invention.
  • FIG. 8 is a schematic diagram of a processing format of an I/Q data of an FPGA TRXI/Q processor on an RRU;
  • FIG. 9 is a schematic structural diagram of a first register according to Embodiment 1 of the present invention.
  • FIG. 10 is a flowchart of a data channel configuration method according to Embodiment 1 of the present invention.
  • FIG. 11 is a flowchart of a data channel configuration method according to Embodiment 2 of the present invention.
  • FIG. 12 is a schematic structural diagram of a optical port register, a BBU register, and a first register according to Embodiment 2 of the present invention
  • FIG. 13 is a schematic structural diagram of a second register in Embodiment 3 of the present invention.
  • FIG. 15 is a schematic structural diagram of a data channel configuration apparatus according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of a BBU interface unit according to an embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a baseband processing unit according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a radio remote unit according to an embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of a radio remote unit according to an embodiment of the present invention.
  • FIG. 20 is a schematic structural diagram of a BBU interface unit according to an embodiment of the present invention.
  • 21 is a schematic structural diagram of a baseband processing unit according to an embodiment of the present invention.
  • FIG. 22 is a schematic structural diagram of a radio remote unit according to an embodiment of the present invention
  • FIG. 23 is a schematic structural diagram of a BBU interface unit according to an embodiment of the present invention
  • FIG. 24 is a schematic structural diagram of a baseband processing unit according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a data channel configuration method for implementing I/Q data synchronization between the RRU and the BBU in the baseband remote base station.
  • the core idea of the method is to perform the CA bit in the chip on the BBU BIU RRU. Synchronous configuration.
  • the method uses the 1CA as the granularity.
  • the number of data channels to be occupied by the cell is determined according to the carrier on the BBU specified in the cell and the physical antenna on the RRU. The number, the specified carrier, the specified physical antenna, and the use of the IF channel on the specified physical antenna, and the merging of the antenna data.
  • the channel information is configured on the BBU, the specified RRU, and the BIU optical port connected to the specified RRU to implement the RRU and BBU. I/Q data synchronization between.
  • the channel information is configured on the BBU RRU and the BIU optical port connected to the RRU by the operation and maintenance system.
  • a data channel configuration method provided by an embodiment of the present invention includes the following steps:
  • the operation and maintenance system specifies which carriers of the BBUs in the BBU baseband pool are occupied by the cell according to the cell plan.
  • the number of data channels that the cell needs to occupy may be determined, and the determining method is:
  • N C n *A n (2) where N represents the number of data channels that the cell needs to occupy, C num represents the number of designated carriers of the cell, and A num represents the number of designated physical antennas of the cell.
  • each first channel information indicates that its corresponding CA bit has valid CA data
  • the valid CA data of the corresponding CA bit is processed by the designated BBU, and the corresponding CA bit of the first channel information is corresponding to the CA data on the data channel.
  • the specified BBU when the specified BBU is configured to process the carrier index of the CA data on each data channel and the logical antenna number information used by the CA data on each data channel on the specified BBU, it can be configured on the designated BBU and each First channel information - corresponding second channel information, the second channel information includes indication information of CA data corresponding to the CA bit that needs to be processed by the BBU, carrier index of the CA data processed by the BBU, logic used by the CA data An antenna number, where the corresponding CA bit of the second channel information is a corresponding CA bit corresponding to the first channel information
  • the third channel information corresponding to each of the first channel information may be configured on the designated RRU.
  • the third channel information includes CA data corresponding to the CA bit that needs to be processed by the RRU, a physical antenna number used by the CA data, and an IF channel number of the CA data using the physical antenna, where the corresponding CA bit of the third channel information Is the corresponding CA bit corresponding to the first channel information;
  • each of the specified RRUs is also configured.
  • the antenna data merge information corresponding to the CA data on the data channel, and the antenna data merge information includes indication information of whether the CA data needs to be merged with the same carrier data of the previous antenna, and the number of bits of the CA data needs to be shifted when the antenna data is combined.
  • the register may be configured or configured. Other memory methods are implemented.
  • the embodiment of the present invention further provides an uplink data synchronization method.
  • the specific working process of the method is as follows:
  • the RRU receives the CA data on the corresponding intermediate frequency channel of the corresponding physical antenna according to the physical antenna number and the intermediate frequency channel number information respectively occupied by the CA data in each of the pre-configured data channels, and sends the CA data to the BIU.
  • the BIU receives the CA data, and sends the CA data to the designated BBU according to the indication information processed by the specified BBU according to the CA data on each data channel configured on the optical port connected to the RRU.
  • the designated BBU receives and processes the CA data according to the pre-configured BBU processing the carrier index of the CA data on each data channel and the logical antenna number information used by the CA data on each data channel.
  • step S301 after receiving the CA data, the RRU further performs a merge operation on the CA data according to the antenna data merge information corresponding to the CA data on each of the pre-configured data channels, and the antenna data merge information includes whether the CA data needs and The indication information of the number of bits that the CA data needs to be shifted when the same carrier data of one antenna is combined and the antenna data is combined.
  • the embodiment of the present invention further provides a downlink data synchronization method.
  • the specific working process of the method is as follows:
  • the BBU processes the CA index of the CA data of each data channel and the logical antenna number information used by the CA data on each data channel according to the pre-configured BBU, processes the CA data, and sends the processed CA data to the BIU. ;
  • the BIU receives the CA data, and sends the CA data to the designated RRU according to the indication information processed by the specified BBU according to the CA data on each data channel configured in advance on the optical port connected to the designated RRU.
  • the physical antenna on the RRU1 designated by the area 1 determines the number of data channels that the cell 1 needs to occupy, and pre-configures on each data channel that the cell 1 needs to occupy on the BIU optical port 1 connected to the RRU1 designated for the cell 1.
  • the CA data is specified by the BBU1.
  • the number of data channels to be occupied by the cell 2 is determined according to the carrier on the BBU2 specified for the cell 2 and the physical antenna on the RRU2 designated for the cell 2.
  • the BIU optical port 2 connected to the RRU2 designated for the cell 2 is pre-configured with the indication information that the CA data on each data channel to be occupied by the cell 2 is processed by the designated BBU2; then, after the BIU receives the processing sent by the BBU1, When the CA data on each data channel that the cell 1 needs to occupy, according to the pre-configured information on the BIU optical port 1, the received CA data is sent to the optical port 1, and then the received CA data is received by the optical port 1. Forwarding to RRU1 (Multiple RRUs may be connected in series on optical port 1. How the optical port correctly forwards the data received by itself to a certain RRU connected to the optical port is common knowledge of those skilled in the art, and is not here. Repeat).
  • the designated RRU receives the CA data, and sends the CA data on the corresponding intermediate frequency channel of the corresponding physical antenna according to the physical antenna number and the intermediate frequency channel number information respectively occupied by the CA data on each of the pre-configured data channels.
  • the register is set in advance on the designated BBU, the RRU, and the BIU optical port connected to the designated RRU, and the operation and maintenance system passes the configuration register.
  • the above information is used to configure the channel information for the BBU, the RRU, and the BIU optical port connected to the specified RRU.
  • the specific work includes the following parts: 1. Pre-set the BBU, RRU, and BIU optical port connected to the specified RRU in the cell. register.
  • the operation and maintenance system specifies which carriers of the BBUs in the BBU baseband pool are occupied by the cell according to the cell plan.
  • the size of the optical port register can be determined according to actual needs.
  • a 64BIT optical port register can be set.
  • Each BIT bit of the optical port register can be numbered, and each BIT bit sequentially corresponds to a CA bit in each chip, and each BIT bit is provided with two configurable identifiers for indicating the BIT bit.
  • the upper CA bit has valid CA data (referred to as "enable identifier")
  • the BBU to which the valid CA data on the BIT bit belongs referred to as "identity identifier”
  • the identification information configured on each BIT bit is the first channel information configured on the optical port of the designated BIU in the embodiment of the present invention. For example: Each BIT bit of the 64BIT optical port register is numbered sequentially, with the numbers “0", “1”, ... “63”; when there are 23 CA bits in each chip.
  • BIT0-BIT22 corresponds to 23 CA bits in exactly the same order; there is an enable identifier EN and an associated identifier BBU on each BIT bit:
  • the EN of the BIT bit is " ⁇ (indicating the enable state)
  • the BBU is set to "BBU0", which is simply referred to as BBU0 enable
  • the EN of the BIT bit can be set to "0" (indicating non-enable state), no need to set the BBU, which is simply not enabled.
  • the specific structure of the optical port register can be seen in Figure 5.
  • the number of BBU registers contained in a group of BBU registers can be determined according to actual needs.
  • a set of BBU registers can be set to contain 64 BBU registers.
  • Each BBU register in a group of BBU registers can be numbered.
  • Each BBU register has a one-to-one correspondence with the BIT bit in the optical port register.
  • Three configurable flags can be set on each BBU register. To indicate whether the CA bit corresponding to the BBU register sequence number has CA data (referred to as "enable flag";), the BBU processes the carrier index of the CA data (referred to as "carrier identification"), The logical antenna number used by the CA data (which can be called the "logical antenna identification").
  • the identification information configured in each BBU register is the second channel information configured on the designated BBU in the embodiment of the present invention.
  • 64 BBU registers are numbered sequentially, numbered "0", “1” & “63”; there is an enable flag on each BBU register.
  • EN carrier identification C
  • logical antenna identification A' When the corresponding CA bit of the BBU register is needed When the BBU processes the CA data, you can set EN to " ⁇ (indicating the enabled state), otherwise you can set ⁇ to "0" (indicating the non-enable state).
  • EN When the FPGA of the 3C6A type BBU shown in Figure 6. (Field Programmable Gate Array) The processing format of the I/Q data.
  • the BBU supports three carriers (the carrier indexes are C0, Cl, C2, respectively), and the logical antenna used by each carrier includes AO', Al', A2 A3', A4 A5'; assume that the CA bit corresponding to the 17th BBU register has CA data that needs to be processed by the BBU, and the carrier index of the BBU that processes the CA data is C0, and the CA data is used.
  • the logical antenna number is ⁇ 4', and the EN in the BBU register corresponding to the 17th BIT bit can be set to " ⁇ , C is CO, and A' is A4'. See Figure 7 for the specific structure of the BBU register.
  • a set of BBU registers can be set to include 64 first registers.
  • Each of the first registers in the first set of registers may be sequentially numbered, and each of the first registers has a one-to-one correspondence with the BIT bits on the optical port registers, and each of the first registers is configured to be configurable.
  • the three identifiers are used to indicate whether the CA bit corresponding to the first register sequence has CA data (referred to as "enable identifier") that needs to be processed by the RRU, and a physical antenna number (called “physical antenna” used by the CA data.
  • the CA data uses the IF channel number of the antenna (may be referred to as "IF channel identification”).
  • the identification information configured on each of the first registers is the third channel information configured on the designated RRU in the embodiment of the present invention. For example, 64 first registers are numbered sequentially, numbered "0", “1” & “63”; in each first register, there is an enable identifier EN, physical antenna identifier A , IF channel identification C'.
  • the EN in the first register may be set to " ⁇ (indicating the enabled state), otherwise the EN may be set to "0" (indicating that the enable is disabled) State).
  • the method for configuring the data channel for the cell by using the method provided by the embodiment of the present invention further includes the following steps:
  • N unoccupied BIT bits in the optical port register configure an identifier of the N BIT bits, and indicate that the CA bit corresponding to each BIT bit needs to specify CA data processed by the BBU; wherein, the N BIT bits can be Continuous or non-continuous, and the corresponding CA bits on the corresponding N BIT bits of other optical port registers do not need to specify the CA data processed by the BBU.
  • the data channel synchronization configuration of the cell is completed.
  • the operation and maintenance system also needs to confirm the data channel synchronization configuration for the optical port register, BBU register, and first register. After that, the BBU, BIU, and designated RRU can accurately know how to send and receive I/Q data in each chip.
  • the embodiment of the present invention uses the data channel configuration method provided by the embodiment of the present invention to configure a data channel for a cell, so that the RRU can send data of a specified carrier on a different physical antenna IF channel to a designated BBU for processing on the BBU.
  • a certain carrier data can be correctly sent to the physical antenna of the specified RRU to transmit on the IF channel, and the I/Q data synchronization between the BBU and the RRU is realized, and the data of the BBU and the RRU in one-to-many and many-to-many situations is realized. Synchronize.
  • RRU BBU
  • the BIU optical port can flexibly configure information according to the actual needs of the data channel configuration.
  • the configurable information is comprehensive, which is conducive to function expansion and flexible use.
  • the specific working process of configuring the data channel for the 3C6A cell by using the data channel configuration method provided by the embodiment of the present invention is as follows:
  • a 3C6A cell occupies the antenna A0-A5 of the RRU0, and the required number of frequency points is 3.
  • the operation and maintenance system specifies the carrier C0-C2 of the BBU0 in the baseband pool according to the cell plan.
  • RRU0 obtains CA data from a designated intermediate frequency channel of the antenna, and the CA bit corresponds to a first register of RRU0;
  • the BIU determines, according to the information on the optical port register connected to the optical port of the RRU0, that the CA data is CA data that needs to be processed by the BBU0, and the BIU sends the CA data to the BBU0;
  • the BBU0 receives the CA data and processes it based on the information on its BBU register.
  • BBU0 processes the CA data according to the information on its BBU register and integrates the processed CA data into the BIU, which corresponds to a BBU register of BBU0;
  • the BIU receives the CA data, and sends the CA data to the designated optical port according to the information on each optical port register, and the designated optical port forwards the CA data to the RRUO;
  • the RRUO solves the CA data and transmits the CA data on the IF channel of the designated antenna according to the information in the corresponding first register.
  • the second embodiment of the present invention uses the data channel configuration method provided by the embodiment of the present invention to configure a data channel for a cell, so that the RRUO can send data of a specified carrier on a different physical antenna IF channel to a designated BBU0 for processing, and processing the BBU0.
  • a certain carrier data can be correctly transmitted to the physical antenna of the specified RRUO to transmit the I/Q data between the BBU0 and the RRUO.
  • the actual configuration of the data channel can be performed on the RRU0, BBUO, and BIU optical ports. Need to flexibly configure information, configurable information is comprehensive, conducive to function expansion, flexible use.
  • the third embodiment of the present invention focuses on the process of synchronizing data channel configuration by using the method provided by the embodiment of the present invention in the case that the I/Q data of the cell is combined.
  • Antenna data combining refers to combining data of the same carrier on different antennas in one cell.
  • the antenna data combining technology can make the coverage of the cell meet the coverage requirement within the BBU processing capability. For example: A 3C cell needs 10 antennas to solve the coverage requirement, so 30 data channels are needed. However, for 1.25G fiber, according to formula (1), each chip can only carry a maximum of 23 BIT. The I/Q data cannot meet the above coverage requirements. However, if the number of users is relatively small, the antenna data combining technology can be used to combine the user data for processing within the BBU processing capability.
  • the methods for merging antenna data include: full merging, corresponding channel merging, intra-RRU channel merging, and free packet merging, where:
  • Fully merging refers to combining data on all antennas in a local cell by carrier. For example, for a 3C6A cell, it is 3C1A when it is completely merged, occupying 3 data channels.
  • Corresponding channel merging refers to combining data on the same antenna number on different RRUs in one local cell by carrier.
  • the channel combination in the RRU refers to combining data on all antennas in the same RRU in a local cell according to carriers.
  • Free packet merging refers to merging the data marked as one antenna group on the same or different RRUs in one local cell according to the carrier by means of grouping the antenna numbers; the free packet merging method breaks the antenna data merging process.
  • RRU and optical port any group combination can be performed in the antenna pool.
  • the configuration is the same as that of the foregoing embodiments except that the BBU, the designated RRU, and the BIU optical port connected to the designated RRU are configured.
  • the antenna data combining information corresponding to the CA data on each data channel needs to be configured on the designated RRU, and the antenna data combining information includes whether the CA data of the CA bit needs to be the same carrier data as the previous antenna. The number of bits that the CA data needs to be shifted when combining and antenna data.
  • the registers are respectively set in the designated BBU, the RRU, and the BIU optical port connected to the designated RRU, and the configurable identifiers on the respective registers are respectively used to indicate the configuration I/Q.
  • the channel information required for the data channel, the specific working process is as follows:
  • the register is set in advance on the designated BBU, RRU of the cell and the BIU optical port connected to the designated RRU.
  • the method for setting the optical port register is the same as the method for setting the optical port register in the data channel configuration method in the baseband remote base station, and will not be described in detail herein.
  • the setting method of the BBU register is the same as the method of setting the BBU register in the data channel configuration method in the baseband remote base station described above, and will not be described in detail here.
  • the method of setting the second register on the RRU is: adding two settable identifiers to each of the first registers to form a second register, and adding two identifiers to the superimposed flag identifier and the shift factor identifier, and superimposing the flag
  • the identifier is used to indicate whether the CA bit corresponding to the second register sequence needs to be merged with the same carrier data of the previous antenna
  • the shift factor identifier is used to indicate the number of bits that the data needs to be shifted when the antenna data is combined (referred to as a shift factor)
  • the shift factor is generally 0-4, and its value can be fixed or flexible.
  • the reason why the shift factor is added is to avoid the occurrence of data overflow caused by vector superposition of different antenna data in the case of merging antenna data.
  • the 64 second registers are sequentially numbered sequentially, with the numbers “0", “1”, ... “63”; each of the second registers has the identifiers EN, A, C' , "superimposed flag", "shift factor”.
  • the specific structure of the second register can be seen in Figure 13.
  • step S201 For the specific determination method, refer to the foregoing step S201, which will not be described in detail herein.
  • each of the second registers indicates that the CA bit corresponding to the second register number has CA data required for the RRU processing, a physical antenna number used by the CA data, and the CA data using the physical antenna.
  • the operation and maintenance system needs to confirm the data channel synchronization configuration of the optical port register, the BBU register, and the second register, and then specify the BBU, BIU,
  • the designated RRU can accurately know how to send and receive I/Q data in each chip, and realize the antenna data combination.
  • the process of transmitting and receiving is as follows:
  • the RRU For a carrier, the RRU obtains CA data from a designated intermediate frequency channel of the antenna, and the CA bit corresponds to a second register, and determines whether the CA data needs to be the previous one according to the "superimposed flag" of the second register.
  • the same carrier data of the antenna is combined; if the combination is required, the CA data is merged with the CA data of the previous antenna and placed in the designated data channel; it can be seen that in the case of the antenna data combination, the RRU does not need to know the current data acquisition. Which antenna data is merged.
  • the BIU compares the channel information on each optical port register. If the CA bit corresponding to the same BIT bit has valid CA data and the CA data belongs to the same BBU, it means that it is required between RRUs on different optical ports.
  • the antenna data is merged, and the BIU integrates the data of the same data channel on each optical port to the corresponding BBU. It can be seen that the data channel synchronization mode of the operation and maintenance system is completely transparent to the BIU.
  • the BBU only processes the data sent after the BIU is integrated.
  • the combination method is completely transparent. 2
  • the BBU sends the processed CA data to the BIU.
  • the BIU sends the CA data to the corresponding optical port according to the channel information on each optical port register, and the optical port forwards the CA data to the designated RRU.
  • RRU Specifies that the RRU solves the CA data and sends it out through the specified antenna IF channel according to the channel information on the corresponding second register.
  • the third embodiment of the present invention uses the data channel configuration method provided by the embodiment of the present invention to configure a data channel for the cell data combining the antenna data, so that the RRU can send the data of the specified carrier on the IF channel of the different physical antenna to the designated BBU for processing.
  • the carrier data processed on the BBU can be correctly sent to the physical antenna of the specified RRU to be transmitted on the IF channel, so that the I/Q data synchronization between the BBU and the RRU can be achieved, thereby achieving the purpose of covering coverage and reducing the networking cost.
  • the BBU, the RRU, and the BIU optical port are flexibly configured according to the actual needs of the data channel configuration, and the configurable information is comprehensive, which is advantageous for function expansion and flexible use, and is applicable to all current application scenarios and antenna data combining requirements; For specific subsystems other than the operation and maintenance system, the specific application is completely transparent.
  • Second determine the BIT bit Query the other optical port registers for the BIT bit allocated to the specified BBU. If yes, and the corresponding BIT bit on the optical port register 1 is not occupied, select the BIT bit; if other optical ports If there is no BIT bit allocated to the specified BBU on the register, the optical port is queried. Register 1, if the optical port register 1 has a BIT bit allocated to the specified BBU, and the BIT bit does not merge the CA data of the specified RRU, the BIT bit is selected; if the optical port register 1 does not exist, the BIT allocated to the designated BBU does not exist. Bit, select the unoccupied BIT bit in optical port register 1. After determining the BIT bit, set the corresponding BIT bit to enable for the specified BBU.
  • Second determine the BIT bit Query on all optical port registers whether there is a BIT bit allocated to the specified BBU, whether the carrier index on the corresponding BIT bit of the specified BBU register is the specified carrier index, and the specified RRU is the assigned RRU. Yes, the BIT bit is selected; otherwise, the unoccupied BIT bit is selected;
  • the corresponding BIT bit is configured to enable the specified BBU.
  • Second determine the BIT bit Query whether there is a BIT bit allocated to the specified BBU in all optical port registers, whether the carrier identifier on the corresponding BIT bit of the specified BBU register is the specified carrier index, and if so, select the BIT bit; otherwise Select the unoccupied BIT bit;
  • the channel information of the BBU register is directly configured as the channel information of the local BBU register; Otherwise
  • the second register is configured in the same manner as the foregoing step S112, and is not described in detail herein.
  • Example 7
  • Second determining the BIT bit if there is a carrier index on the specified BBU register that is the same as the specified carrier index, and the packet number of the physical antenna corresponding to the BIT bit in the second register of the designated RRU is the same as the packet number of the designated physical antenna, then the selected BIT bit; otherwise select the unoccupied BIT bit;
  • B4 Configure the BBU register. First, determine the BBU register corresponding to the serial number and the number of the above BIT bit. Secondly, configure the corresponding identifier of each BIT bit according to the carrier to be occupied by the local cell; then, configure the logical antenna identifier of each BBU register: If there is a designation The carrier identifier on the BBU register is the same as the specified carrier index, and the physical antenna identifier of the corresponding BIT bit in the second register of the designated RRU is the same as the specified physical antenna, and the logical antenna number on the designated BBU register corresponding to the designated RRU is selected; Otherwise, select the logical antenna number that is free on the specified BBU.
  • the second register is configured in the same manner as the foregoing step S112, and is not described in detail herein.
  • the data channel configuration is more flexible by grouping the physical antennas on the RRU, which breaks the limitation on the RRU and BIU optical ports during the antenna data merging process. , you can make any combination in the antenna pool.
  • an embodiment of the present invention further provides a data channel configuration apparatus, including: a data channel number determining module 151, configured to: according to a baseband processing unit specified in advance for a cell
  • the carrier on the BBU and the physical antenna on the RRU of the radio remote unit specified in advance for the cell determine the number of data channels that the cell needs to occupy;
  • the first channel information configuration module 152 is configured to configure, on the BIU optical port of the BBU interface unit connected to the designated RRU, the indication information that the CA data on each data channel is processed by the designated BBU;
  • a second channel information configuration module 153 configured to configure, on the designated BBU, a carrier index of the specified BBU to process CA data on each of the data channels, and logic used by the CA data on each of the data channels Antenna number information;
  • a third channel information configuration module 154 configured to configure each of the numbers on the designated RRU, where the first channel information configuration module 152 is further configured to configure, on the BIU optical port connected to the designated RRU, a first channel information corresponding to a data channel, the first channel information indicating that the corresponding CA bit has valid CA data, and the valid CA data of the CA bit is processed by the designated BBU, the first channel information Corresponding CA bit is the number of CAs on the corresponding data channel According to the CA position.
  • the second channel information configuration module 153 is further configured to configure, on the designated BBU, second channel information corresponding to the first channel information, where the second channel information includes a corresponding CA bit that needs to be processed by the BBU.
  • the indication information of the CA data, the carrier index of the CA data for processing the CA data, and the logical antenna number used by the CA data, and the corresponding CA bit of the second channel information is a corresponding CA bit corresponding to the first channel information.
  • the third channel information configuration module 154 is further configured to configure, on the designated RRU, third channel information corresponding to the first channel information, where the third channel information includes indicating that the corresponding CA bit needs the RRU processing.
  • the CA data information, the physical antenna number used by the CA data, the CA data using the IF channel number information of the root antenna, and the corresponding CA bit of the third channel information is a corresponding CA bit corresponding to the first channel information.
  • the third channel information configuration module 154 is further configured to configure, on the designated RRU, antenna data combining information corresponding to the CA data on the data channel, where the antenna data combining information includes whether the CA data needs to be the same as the previous antenna. The number of bits that the CA data needs to be shifted when the carrier data is combined and the antenna data is combined.
  • the embodiment of the present invention further provides an operation and maintenance system, which is provided with a data channel configuration device according to various embodiments of the present invention.
  • the data channel configuration method according to the embodiment of the present invention is a cell configuration data channel.
  • an embodiment of the present invention further provides a BBU interface unit, including: a first channel information receiving module 161, configured to receive CA data on each data channel configured on an optical port of the BBU interface unit. Indication information processed by the designated BBU;
  • the first channel information storage module 162 is configured to store the information received by the first channel information receiving module 161.
  • the first channel information receiving module 161 is further configured to receive, by the optical interface of the BBU interface unit, first channel information that is in one-to-one correspondence with each of the data channels, where the first channel information indicates that the corresponding CA bit has The valid CA data, the valid CA data of the CA bit is processed by the designated BBU, and the corresponding CA bit of the first channel information is the CA bit of the CA data corresponding to the data channel.
  • a baseband processing unit including: a second channel information receiving module 171, configured to receive, by the baseband processing unit configured on the baseband processing unit, each data channel. a carrier index of the upper CA data, and logical antenna number information used by the CA data on each of the data channels;
  • the second channel information storage module 172 is configured to store the information received by the second channel information receiving module 171.
  • the second channel information receiving module 171 is further configured to receive, by the baseband processing unit, second channel information that is in one-to-one correspondence with the first channel information, where the second channel information includes a corresponding CA bit.
  • the indication information of the CA data processed by the baseband processing unit, the carrier index of the CA data processed by the baseband processing unit, and the logical antenna number used by the CA data, and the corresponding CA bit of the second channel information is the corresponding first channel.
  • the corresponding CA bit of the message is further configured to receive, by the baseband processing unit, second channel information that is in one-to-one correspondence with the first channel information, where the second channel information includes a corresponding CA bit.
  • an embodiment of the present invention further provides a radio remote unit, including: a third channel information receiving module 181, configured to receive CA data on each data channel configured on the radio remote unit
  • the physical information of the third channel information storage module 182 is used to store the information received by the third channel information receiving module 181.
  • the third channel information receiving module 181 is further configured to receive third channel information that is configured on the radio remote unit and that is in one-to-one correspondence with the first channel information, where the third channel information includes a corresponding CA bit.
  • the indication information of the CA data processed by the radio remote unit, the physical antenna number used by the CA data, the IF channel number information of the physical antenna, and the corresponding CA bit of the third channel information are corresponding.
  • the third channel information receiving module 181 is further configured to receive antenna data combining information corresponding to the CA data on each data channel configured on the radio remote unit, where the antenna data combining information includes whether the CA data needs and The same carrier data of one antenna is combined, and the information of the number of bits that the CA data needs to be shifted when the antenna data is combined is indicated.
  • an embodiment of the present invention further provides a radio remote unit suitable for the uplink direction, including: a third configuration information storage module 191, configured to store physical antenna numbers and intermediate frequency channel number information respectively occupied by CA data on each data channel configured for the foregoing;
  • the first receiving module 192 is configured to query, in the information stored by the third configuration information storage module 191, the physical antenna number and the intermediate frequency channel number corresponding to the CA data, and receive the physical antenna and the intermediate frequency channel corresponding to the CA data.
  • the CA data is described, and the CA data is sent to the BBU interface unit BIU.
  • the third configuration information storage module 191 is further configured to store antenna data merge information corresponding to the CA data on each data channel configured for the foregoing, where the antenna data merge information includes whether the CA data needs to be the same as the previous antenna.
  • the first receiving module 192 is further configured to perform a combining operation on the CA data according to the antenna data combining information corresponding to the CA data on each data channel stored by the third configuration information storage module 191.
  • an embodiment of the present invention further provides a BBU interface unit that is applicable to an uplink direction, and includes:
  • the first configuration information storage module 201 is configured to store indication information that the CA data on each data channel configured in advance on the optical port is processed by the designated baseband processing unit BBU;
  • the first forwarding module 202 is configured to query, in the information stored by the first configuration information storage module 201, the designated BBU of the CA data sent by the RRU, and forward the CA data to the designated BBU.
  • an embodiment of the present invention further provides a baseband processing unit suitable for the uplink direction, including:
  • a second configuration information storage module 211 configured to store a carrier index for processing CA data on each data channel, and a logical antenna number used by the CA data on each of the data channels, respectively, by the baseband processing unit configured for the baseband processing unit configured in advance Information
  • the first processing module 212 is configured to query, in the information stored by the second configuration information storage module 211, a carrier index and a logical antenna number corresponding to the CA data sent by the BBU, and according to the carrier and the logical antenna corresponding to the CA data.
  • the CA data is received and processed.
  • an embodiment of the present invention further provides a radio remote unit suitable for the downlink direction, including:
  • the third configuration information storage module 221 is configured to store the physical antenna number and the intermediate frequency channel number information respectively occupied by the CA data on each data channel configured for the foregoing;
  • the second receiving module 222 is configured to query the physical antenna number and the intermediate frequency channel number corresponding to the CA data sent by the BIU in the information stored by the third configuration information storage module 221, and associate the CA data in the corresponding physical antenna. Send out on the IF channel.
  • an embodiment of the present invention further provides a BBU interface unit suitable for the downlink direction, including:
  • the first configuration information storage module 231 is configured to store indication information that the CA data on each of the data channels configured in advance on the optical port is processed by the designated baseband processing unit BBU;
  • the second forwarding module 232 is configured to query, in the information stored by the first configuration information storage module 231, the designated radio remote unit RRU of the CA data sent by the BBU, and forward the CA data to the designated RRU.
  • the second forwarding module 232 determines the corresponding optical port of the CA data in the information configured in advance on each optical port stored in the first configuration information storage module 231, and further determines The designated RRU of the CA data, that is, the received CA data is sent to the determined corresponding optical port, and the received optical data is further forwarded by the corresponding optical port to the determined designated RRU.
  • an embodiment of the present invention further provides a baseband processing unit suitable for the downlink direction, including:
  • a second configuration information storage module 241 configured to store a carrier index of CA data processed on each data channel, and a logical antenna respectively used for CA data on each of the data channels, for the baseband processing unit configured in advance Number information
  • the second processing module 242 is configured to query, in the information stored by the second configuration information storage module 241, a carrier index and a logical antenna number corresponding to the CA data, and process the CA according to the carrier and the logical antenna corresponding to the CA data. Data, and send the processed CA data to the BBU Interface unit BIU.
  • the data channel configuration method and device when configuring a data channel for a cell, determine the number of data channels that the cell needs to occupy according to the carrier on the BBU specified in the cell and the physical antenna on the RRU; The number of data channels to be occupied by the cell, the specified carrier, the use of the designated physical antenna and the IF channel on the specified physical antenna, and the merging of the antenna data.
  • the channel information is configured on the specified BBU, the specified RRU, and the BIU optical port connected to the specified RRU. , to achieve I / Q data synchronization between the RRU and the BBU.

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

Abstract

L'invention porte sur un procédé et sur un appareil pour configurer un canal de données pour réaliser une synchronisation de données I/Q entre RRU et BBU dans une station de base de type à distance de bande de base. Le procédé comprend les opérations consistant à : déterminer le nombre de canaux de données occupés par une cellule selon la porteuse sur une unité à base de largeur de bande (BBU) préattribuée à la cellule et une antenne physique sur une unité à distance radio (RRU) préattribuée à la cellule ; configurer des informations d'indication de données CA d'unité de données en phase/en quadrature sur chaque canal de données traité par la BBU attribuée sur un port de fibre BIU d'une unité d'interface BBU connectée avec la RRU attribuée ; configurer un indice de porteuse des données CA sur chaque canal de données traité par la BBU attribuée et des informations de nombre d'antennes logiques utilisées respectivement par les données CA sur chaque canal de données sur la BBU attribuée ; configurer des informations de nombre d'antennes physiques et de nombre de fréquences intermédiaires occupées respectivement par des données CA sur chaque canal de données sur la RRU attribuée.
PCT/CN2008/001822 2007-10-30 2008-10-30 Procédé et appareil pour configurer un canal de données WO2009067859A1 (fr)

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