WO2006007762A1 - Architecture extensible de systeme de station de base centralise - Google Patents

Architecture extensible de systeme de station de base centralise Download PDF

Info

Publication number
WO2006007762A1
WO2006007762A1 PCT/CN2004/000841 CN2004000841W WO2006007762A1 WO 2006007762 A1 WO2006007762 A1 WO 2006007762A1 CN 2004000841 W CN2004000841 W CN 2004000841W WO 2006007762 A1 WO2006007762 A1 WO 2006007762A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
unit
module
station system
network
Prior art date
Application number
PCT/CN2004/000841
Other languages
English (en)
Chinese (zh)
Inventor
Sheng Liu
Shaoyun Ruan
Baijun Zhao
Original Assignee
Utstarcom Telecom Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Utstarcom Telecom Co., Ltd. filed Critical Utstarcom Telecom Co., Ltd.
Priority to CN2004800434664A priority Critical patent/CN1977550B/zh
Priority to PCT/CN2004/000841 priority patent/WO2006007762A1/fr
Publication of WO2006007762A1 publication Critical patent/WO2006007762A1/fr

Links

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 base station technology in a mobile communication system, and more particularly to a scalable base station system capable of easily adapting to various system sizes and their changes. Background technique
  • a radio access network is typically composed of a base station (BTS) and a base station controller (BSC) or a radio network controller (RNC) for controlling a plurality of base stations, as shown in Fig. la.
  • the base station is mainly composed of a baseband processing subsystem, a radio frequency (RF) subsystem and an antenna, and is responsible for completing transmission, reception, and processing of radio signals, and a base station can cover different cells through multiple antennas, as shown in FIG.
  • a radio unit and an antenna are installed in an area where coverage is required, and are connected to other units of the base station through a broadband transmission line.
  • the technology is further developed into a centralized base station technology that uses radio units to be extended.
  • the centralized base station with the radio unit extended has many advantages: It allows multiple micro cells to replace a macro cell based on the traditional base station, so that it can better adapt to different wireless environments and improve the system. Wireless performance such as capacity and coverage; centralized architecture allows soft handover in legacy base stations to be done with softer handovers, resulting in additional processing gains; centralized architecture also enables expensive baseband signal processing resources to become multiple cells Shared resource pool to gain the benefits of statistical reuse, reduce the system Cost.
  • U.S. Patent disclose implementation details of this technology.
  • the centralized base station system 10 using the radio unit is remotely composed of a centrally configured central channel processing subsystem 11 and a remote radio unit (RRU) 13, which are connected by a broadband transmission link or network 12.
  • the central channel processing subsystem 11 is mainly composed of a functional unit such as a channel processing resource pool 15, a BSC/R C interface unit 14, and a signal routing allocation unit 16.
  • the channel processing resource pool 15 is formed by stacking a plurality of channel processing units 1-N to perform baseband signal processing and the like.
  • the signal routing and allocating unit 16 dynamically allocates channel processing resources according to the traffic volume of each cell, thereby realizing effective sharing of multi-cell processing resources.
  • the signal routing assignment unit 16 can be implemented as a separate device outside the centralized base station, in addition to being implemented within the centralized base station as shown in FIG.
  • the remote radio unit 13 is mainly composed of a radio frequency power amplifier of a transmitting channel, a low noise amplifier of a receiving channel, and an antenna.
  • the link between the Central Channel Processing Subsystem (also referred to as the Master Unit (MU)) and the Remote Radio Unit (RRU) can typically be a fiber, copper, microwave, etc. transmission shield.
  • the remote radio unit can be local to the central channel processing subsystem, where the connection between the radio unit and the signal routing unit can only be adapted for local transmission.
  • connection architecture in existing centralized base station systems constrains this sharing optimization.
  • connection methods are adopted:
  • connection relationship changes a large amount of work is required to adjust the system, especially when the system is large and the interconnection relationship is complicated.
  • the base station hardware platform In terms of hardware platform, since the prior art interconnection method limits the flexibility of component distribution and configuration, when considering the problems of RF power device size and heat dissipation, the base station hardware platform often adopts a vendor-defined platform. For example, due to limitations of the connection method, it is not possible to reasonably separate components that are not required in terms of size and heat dissipation to use a general-purpose hardware platform. A similar problem exists with the interconnection between the baseband processing resources and the base station controller. In summary, the interconnection architecture in the centralized base station system has become a key factor restricting the development of centralized base station systems. Summary of the invention
  • the present invention provides a centralized base station system including a primary base station subsystem and one or more remote radio frequency subsystems, wherein the remote radio frequency subsystem is responsible for signal reception and transmission of a corresponding cell, and the primary base station subsystem includes And one or more base station controller interface units, configured to provide a base station system with a transmission interface with the base station controller; and a signaling unit, configured to complete protocol processing required for signaling transmission between the base station system and the base station controller,
  • the base station controller interface unit is configured to provide processing support; one or more baseband processing units, configured to perform baseband processing on a radio protocol physical layer process for an uplink wireless signal from the cell and a downlink user data stream from the base station controller; Or a plurality of remote radio interface units for providing an interface to the remote radio subsystem of the main base station subsystem; a clock synchronization unit for providing timing signals in the main base station subsystem; and a switching network for mutual Connected to the base station controller interface unit, signaling unit, baseband processing unit, remote radio interface
  • the main control unit includes one or more control modules
  • the clock synchronization unit includes a clock unit and one or more clock distribution modules
  • the first switching network includes a second network exchange.
  • the second switching network includes a second network switching unit and one or more second network switching modules, each baseband processing unit of the primary base station subsystem, a base station controller interface unit, a signaling unit, and a remote end
  • the radio frequency interface unit is located in one of the one or more modules
  • each of the modules includes at least one control module, at least one clock distribution module, at least one first network switching module, and if one module has a baseband
  • the module has at least one second network switching unit, wherein all components in each module are connected to at least one bus, and the first network switching module interconnects the module in which it is located
  • Each component within the device is responsible for data exchange between the components and is connected to the switching unit to implement first switching network interconnection and data exchange between components of different modules
  • the clock unit is connected to the first switching network through the first network switching unit for generating a timing signal, and the timing signal is provided to corresponding components in the module by a clock distribution unit in each module, each
  • the control module in the module is responsible for controlling various components in the module, and one of the control modules is a main control module, and is responsible for controlling the control module in other modules and other modules in the system outside the module through the first switching network. component.
  • the module is based on an ATCA architecture.
  • the group is based on a CPCI architecture.
  • the first network switching module covers the various components within the module in which it resides in a packet switched star backplane link as defined by PICMG 2.16.
  • the second network switchboard overwrites corresponding components within the module in which it resides with a star high speed serial differential signal backplane link.
  • the first network switching unit is located in a module.
  • the second network switching unit is located in a module.
  • the clock unit is located within a module.
  • the second network switching module and the second network switching unit are interconnected by a high speed differential signal cable or fiber.
  • the remote radio interface unit, the baseband processing unit and the base station controller interface unit use the same embedded interface within the module.
  • a management terminal for controlling the main control module through the first switching network.
  • a control module in a module, a control module, a clock distribution module, a base station controller interface unit, a baseband processing module, a remote radio interface unit, a first network switching module, or a second network switching module Have a corresponding additional backup module or unit.
  • the clock unit is implemented by a replaceable redundantly configured clock synthesis function block.
  • the first network switching unit or the second network switching unit has a redundant configuration.
  • the control module of the other modules takes over the work according to a predetermined mechanism.
  • more than one baseband processing unit processes a baseband signal stream or a user data stream in a load sharing manner.
  • a management terminal is further included for The first switching network controls the main control unit.
  • the clock synchronization unit generates the timing signal by tracking GPS, BITS or a synchronization reference signal from the base station controller via the base station controller interface unit.
  • the base station controller interface unit performs a transport layer function of an interface between the base station system and the base station controller.
  • the transport layer function is AAL, ATM, IMA, SDH, El or Tl.
  • the base station controller interface unit in the downlink direction, separates the signaling stream and the user data stream from the downlink data stream and respectively sends them to the signaling unit and the corresponding baseband processing through the first switching network.
  • the base station controller interface unit In the upstream direction, multiplexes the signaling stream and the user data stream from the corresponding baseband processing unit into the upstream data stream.
  • the base station controller interface unit performs protocol format conversion of the data stream between the transmission with the base station controller and the exchange with the internal unit of the base station system.
  • the exchange of the base station controller interface unit with the internal unit adopts an IP/Ethernet-based network switching technology
  • the data transmission with the base station controller adopts UDP or TCP, and adopts UDP/IP/Ether. Protocol format conversion for network or TCP/IP/Ethernet protocol stack.
  • the base station controller interface unit performs collection/distribution of user data streams.
  • the base station controller interface unit performs synchronous extraction.
  • the first switching network is configured under the control of the main control unit.
  • the configuration includes a VLAN configuration, a QoS configuration.
  • the first switching network is capable of performing data stream forwarding and statistics functions.
  • the baseband processing unit has a control channel to the main control unit to receive and execute resource management instructions.
  • control channel is based on a first switching network.
  • the first switching network has non-blocking or low blocking switching capabilities.
  • the second switching network has non-blocking or low blocking switching capabilities.
  • the main control unit specifies that the baseband sampling signal stream of any one cell is switched to any one of the baseband processing units for processing according to the task allocation policy, or is copied to a plurality of baseband processing.
  • the unit performs processing; in the downlink direction, the main control unit specifies that the user data stream of any one cell is exchanged to any one of the baseband processing units for processing according to the task allocation policy, or is copied to a plurality of baseband processing units for processing.
  • each of the baseband processing units is capable of simultaneously processing one to more baseband data streams.
  • the second switching network is a high speed, low latency network.
  • the remote radio interface unit when the signal format of the interface between the remote radio interface unit and the remote radio frequency subsystem is different from the format of the baseband signal stream, the remote radio interface unit performs corresponding conversion.
  • control of the main control unit includes the entire base Management, monitoring, maintenance of the station system, and allocation, combination, and scheduling of various processing resources within the base station system.
  • the signal transmission network employs a cross-connect device that can be controlled by the master unit.
  • the ratio of the baseband processing unit to the remote radio interface unit is such that the baseband processing capability of the base station system matches the I/O capability of the baseband signal stream.
  • the remote radio frequency subsystem and the remote radio frequency interface unit can be combined into a radio frequency unit, and the radio frequency unit is located in the same location as the remote radio frequency interface unit, wherein the signal transmission network is removed.
  • Figure la illustrates the structure of a radio access network
  • Figure lb illustrates the structure of a conventional base station
  • FIG. 2 is a block diagram showing the structure of a centralized base station system based on radio unit extension
  • FIG. 3 is a block diagram showing the structure of a centralized base station system in which a radio unit is extended according to an embodiment of the present invention
  • FIG. 4 is a block diagram showing the structure of a centralized base station system having a local radio unit based on an embodiment of the present invention
  • Figure 5a is a schematic diagram illustrating the downlink data stream distribution function of the base station controller interface unit
  • Figure 5b is a schematic diagram illustrating the upstream data stream collection function of the base station controller interface unit
  • Figure 5c is a schematic diagram showing the integration of the uplink/downlink data stream collection/distribution function on the base station controller interface unit;
  • Figure 6a is a schematic diagram showing the case where one uplink I/Q signal stream is distributed to multiple baseband boards for processing;
  • Figure 6b is a schematic diagram showing the case of combining downlink signals belonging to the same cell processed on multiple baseband boards into one downlink I/Q signal stream;
  • FIG. 7a shows the master unit in which the functions are integrated into the shared physical module
  • FIG. 7b shows the master unit in which the functions are distributed among different physical modules
  • Figure 8 illustrates an implementation of an embodiment of the present invention on a CPCI platform
  • Figure 9 is a schematic diagram illustrating the coverage of a LAN switched network
  • Figure 10 is a schematic diagram showing the coverage of a baseband I/Q signal stream switching network
  • Figure 11 is a schematic diagram illustrating the coverage of a clock synchronization network
  • Figure 12 is a schematic diagram illustrating a user data stream channel
  • Figure 13 is a schematic diagram illustrating the management channel
  • Figure 14 is a block diagram showing the structure of the BCI module
  • Figure 15 is a block diagram showing the structure of the BB module
  • FIG. 16 is a block diagram showing the structure of the RRI module
  • FIG. 17 is a block diagram showing the structure of the LA module
  • Figure 18 is a block diagram showing the structure of the IQ-FB module
  • FIG. 19 is a block diagram showing the structure of a TDM switching mechanism
  • Figure 20a is a schematic diagram showing the structure of a TDM frame
  • Figure 20b is a schematic diagram illustrating the mapping of I/Q signal streams to TDM frames
  • Figure 21 is a schematic diagram illustrating the separation of uplink and downlink baseband signal exchanges
  • Figure 22 is a block diagram illustrating the structure of the SYS module
  • Figure 23 is a block diagram showing the structure of the NBP module
  • Figure 24 is a block diagram showing the structure of the CLKD module
  • FIG. 25 illustrates the structure of the clock unit.
  • AAL ATM Adaptation Layer
  • ASIC ASIC
  • ATCA Advanced Telecom Computer Architecture (developed by Intel and other manufacturers)
  • BTS base station
  • BSC Base Station Controller
  • CPCI CompactPCI, a PCI-based defined by PICMG
  • FPGA Field Programmable Gate Array
  • Radio Network Controller Controller
  • NodeB Base Station
  • NBP NodeB signaling processing module
  • PICMG2.16 PICMG Standard for Backplanes Supporting Packet Switched Links on the CPCI Platform QoS: Quality of Service
  • RNC Wireless Network Controller
  • VLAN Virtual LAN Implementation
  • FIG. 3 illustrates the structure of a centralized base station system 20 in which the radio unit is remote, in accordance with an embodiment of the present invention.
  • base station system 20 includes a primary base station subsystem 21 and a plurality of remote radio frequency subsystems 22.
  • the primary base station subsystem 21 includes a signal transmission network 19, a plurality of remote radio frequency interface units 25, a baseband signal stream switching network 27, a plurality of baseband processing units 24, a clock synchronization unit 23, a LAN (Local Area Network) switching network 28, and a base station controller.
  • the main control unit 29 controls the other parts of the main base station subsystem 21 in the same chassis through a channel 17 (shown as a thick solid line), which is physically accessible via a LAN network or an internal bus (e.g., a PCI bus). achieve.
  • the LAN switching network 28 in the figure is a local area network such as Ethernet, it is also possible to use a network of other technologies.
  • the remote radio frequency subsystem 22 and the remote radio interface unit 25 exchange uplink and downlink radio signals through the signal transmission network 19.
  • the remote radio interface unit 19 and baseband processing unit 24 exchange baseband signal streams through the baseband signal stream switching network 27, while the baseband processing unit 24 and base station controller interface unit 26 exchange user and control data streams over the LAN switch network 28.
  • the base station controller interface unit 26 is coupled to a base station controller or a radio network controller (not shown).
  • the main control unit 29 is not shown.
  • the signaling unit 18, the remote radio interface unit 25 and the clock synchronizing unit 23 are each connected to the LAN switching network 28 via their respective interfaces (not shown), which may be internal buses or dedicated connections.
  • the switch fabric-based interconnect structure allows for easy addition and subtraction of system components, modification of configuration, and facilitates inter-frame connectivity.
  • Base station controller interface unit
  • the base station controller interface unit 26 provides a transmission interface of the base station system 20 to the base station controller, the main functions of which are:
  • the transport layer functions (such as AAL, ATM, IMA, SDH, El, Tl, etc.) of the interface between the base station system 20 and the base station controller.
  • the user data stream is sent to the corresponding baseband processing through the LAN switching network 28.
  • the signaling stream is sent to the signaling unit 18 through the LAN switching network 28; in the upstream direction, the signaling stream and the user data stream from each internal unit are multiplexed into an upstream data stream.
  • Protocol format conversion of data streams between transmissions with base station controllers and exchanges with internal units such as IP/Ethernet-based network switching techniques, and base station controllers when switching to internal units
  • UDP or TCP is used for data transmission
  • data flow is performed using UDP/IP/Ethernet or TCP/IP/Ethernet protocol stack.
  • the user data stream is distributed to the corresponding baseband processing unit 24 responsible for processing the data stream.
  • the user data flow collection/distribution module 41 in the base station controller interface unit 26 Multiple copies of the data stream received by base station controller interface module 40 are copied and sent to these baseband processing units 24 for processing, for example, when macrodiversity is employed. As shown in FIG. 5a, if the task assignment policy specifies that the data stream for a user from the base station controller is processed by the plurality of baseband processing units 24, the user data flow collection/distribution module 41 in the base station controller interface unit 26 Multiple copies of the data stream received by base station controller interface module 40 are copied and sent to these baseband processing units 24 for processing, for example, when macrodiversity is employed. As shown in FIG.
  • the user data stream collecting/distributing module 41 performs selection, combination, and the like on the data streams of the same user from different baseband processing units 24, and forwards them to the base station controller through the base station controller interface module 40.
  • the user data stream collection/distribution module 41 can also be integrated within the base station controller interface module 40.
  • the base station controller interface module 40 can extract the timing reference signal sent from the base station controller from the designated transmission line and send it to the clock synchronization unit 23 of the system as needed.
  • the signaling unit 18 performs the protocol processing required for signaling transmission between the base station system 20 and the base station controller. Taking UMTS as an example, the signaling unit 18 performs the processing of the NBAP and ALCAP protocols.
  • the signalling stream to be processed by the signalling unit 18 is obtained by the data stream separation function of the base station controller interface unit 26.
  • the unit may include one or more signaling processing modules depending on the design capacity.
  • the LAN switching network 28 employs IP/Ethernet technology.
  • IP/Ethernet technology is a suitable for exchanging internal control signals, management signals, signaling, And typical local area network technology for user data flow between the base station controller interface unit and the baseband processing unit.
  • Other suitable LAN technologies such as FDDI, etc., can also be used to construct a LAN switched network.
  • the LAN switching network 28 can be flexibly configured under the control of the system's main control module 29, such as VLAN configuration, QoS configuration, and can perform required data flow forwarding and statistics functions.
  • the baseband processing unit 24 performs the functions of the baseband processing portion of the radio layer physical layer process. Taking UMTS as an example, in the downlink direction, according to the assignment of the task allocation policy, the baseband processing unit 24 receives the corresponding user data stream from the base station controller interface unit 26 through the LAN switching network 28, performing channel coding, interleaving, rate matching, and spreading. The processing of the scrambling, modulation, and the like forms a baseband I/Q signal stream, which is then sent to the corresponding remote radio frequency subsystem 22 through the remote radio interface unit 25.
  • the baseband processing unit 24 receives the I/Q sampling signal stream from the corresponding remote radio frequency subsystem 22 through the remote radio interface unit 25 according to the designation of the task allocation policy by the main control unit 29 (usually 2 to 8 times Chip rate sampling), after matched filtering, despreading, channel estimation, RAKE combining, SIR estimation, deinterleaving, channel decoding, etc., obtains the user data stream, and then sends it to the base station through the LA switching network 28.
  • the interface unit 26 performs forwarding. At the same time, the upper and lower processing rooms must cooperate with the fast power control function.
  • the baseband processing unit 24 may adopt a scheme of integrating chip level processing (spreading, scrambling, etc.) with symbol level processing (channel codec, rate matching, etc.) on the same hardware module, or may adopt the functions of the two parts.
  • the data stream transfer between the chip level processing module and the symbol level processing module is carried by the LAN switching network 28.
  • each baseband processing unit 24 may process one to multiple baseband I/Q signal streams.
  • Each baseband processing unit 24 has a master unit to the system Control channel of 29 to receive and execute resource management instructions.
  • the connection between the baseband processing unit 24 and the main control unit 29 is established through the LAN switching network 28.
  • utilizing the good scalability and non-blocking switching capabilities of the LAN switching network 28 provides an interconnect system that is particularly unsuitable for implementing a wide range of interconnected cells through tightly coupled channels such as buses or point-to-point channels such as RS232 ( For example, when the baseband processing unit is not in the same cabinet as the main control unit, that is, when it is not on the same backplane.
  • the baseband signal stream switching network 27 is used for the exchange of baseband signal streams between the baseband processing module 24 and the remote radio interface unit 25.
  • the baseband sampling signal stream of any one cell can be switched to any one of the baseband processing units 24 according to the designation of the task allocation policy by the main control unit 29.
  • multiple copies of one upper 4 ⁇ signal stream may be sent to multiple baseband processing units 24 for processing (each unit may process different channels), see FIG. 6a; in the downlink direction, the downlink channel of the same cell may be The synthesis is performed after processing on a plurality of baseband processing units 24, see Figure 6b.
  • an interconnect system particularly a unit that is not suitable for implementing a wide range of interconnections through tightly coupled channels or point-to-point channels such as buses (eg, when the baseband processing unit and the remote radio interface are The means by which the cells are physically distributed in different machines.
  • the data stream obtained by the baseband processing unit in the downlink direction and the data rate before the baseband processing in the uplink direction are relatively high. Therefore, the backplane connection between the baseband signal stream switching network and the related modules is LVDS, CML or the like.
  • High-speed differential signal serial transmission technology The machine rejects the connection using a high-speed differential pair cable or fiber connection.
  • Differential pair A differential pair cable or fiber can support a single signal as a transport physical port or a combination of multiple serial signals as a physical transmit port. Above the physical layer of the high-speed differential pair, it can carry a simple time division multiplexing frame structure, and can also carry an upper layer protocol, such as Ethernet, IP, and the like.
  • each channel can be multiplexed with up to 20 or more I/Q signal streams.
  • Each module slot to baseband signal stream switching network may have one or more physical transport ports.
  • the baseband signal stream switching network is preferably designed as a high-speed, low-latency network.
  • An IP-based switching network, or a high-speed, low-latency TDM switching network or other high-speed switching network can be used to construct a baseband signal stream switching network.
  • the remote radio interface unit 25 provides an interface between the primary base station subsystem 21 and the remote radio frequency subsystem 22 by a suitable remote signaling method.
  • a variety of analog or digital multiplexing and transmission techniques are available for the implementation of such interfaces.
  • the signal format of the interface is different from the format of the foregoing baseband digital signal stream, the corresponding conversion needs to be performed in the remote radio interface unit 25.
  • the radio unit can occupy the position of the remote radio interface unit 25 in the system as described in this embodiment, and the transmission network 19 is omitted accordingly, thereby obtaining the embodiment shown in FIG.
  • the main control unit 29 is responsible for system management, monitoring, and maintenance of the entire base station (including the remote radio frequency subsystem).
  • the unit is also responsible for management functions such as allocation, combination, and scheduling of various processing resources in the base station.
  • functions such as system management, monitoring, maintenance, and resource management can be physically processed on the same module within the main control unit 29, as shown in Figure 7a; or they can each be executed by different hardware modules.
  • the interconnection channel between the unit and other units may be the aforementioned LAN local area network, or may be a channel related to the hardware platform, such as a PCI bus.
  • the master unit 29 can be physically a single processor, multiple processor or distributed processing system. Clock synchronization unit
  • the clock synchronization unit 23 generates each module in the system by tracking GPS, BITS or a synchronization reference signal sent from the base station controller via the base station controller interface unit (remote radio frequency interface unit 25, baseband signal stream switching network 27, baseband processing) Unit 24, LAN switching network 28, base station controller interface unit 26, signaling unit 18) various timing signals required, such as a sample clock signal, a chip clock, a wireless frame synchronization signal, a transmission line clock, etc.
  • a dedicated distribution network sends clock signals to each module. Similar to other units, the clock synchronization unit 23 has an interface to the LAN switching network 28. Signal transmission network
  • a cross-connect device (analog or digital) that can be controlled by the master unit 29 (as indicated by the dashed line) is employed in the construction of the network to further enable the remote base station subsystem 21
  • a flexible mapping (rather than a fixed mapping) between the transmit port of the radio interface unit 25 and the remote radio frequency subsystem 22. This feature can be used to support the primary base station
  • the remote radio interface unit 25 of the subsystem 21 has a variety of ways to further increase the availability of the system.
  • FIG. 4 is a block diagram showing the structure of a centralized base station system 30 having a local radio unit based on an embodiment of the present invention.
  • the radio frequency unit 32 incorporates the remote radio frequency subsystem and the remote radio frequency interface unit of Figure 3 and is local to the base station system. Since remote transmission is not required, the transmission network 19 in Fig. 3 is omitted.
  • the location of the radio unit 32 in the base station system 30 is similar to the location of the remote radio interface unit 25 in the base station system 20.
  • the baseband signal stream switching network 37, the baseband processing unit 34, the clock synchronization unit 33, the LAN switching network 38, the base station controller interface unit 36, the main control unit 39 and the signaling unit 31 in the base station system 30 are similar to the diagrams, respectively.
  • the baseband signal stream switching network 27 of the embodiment of 3 the baseband processing unit 24, the clock synchronization unit 23, the LAN switching network 28, the base station controller interface unit 26, the main control unit 29 and the signaling unit 18.
  • the connection relationship, manner and operation are also similar to the embodiment of Fig. 3, and therefore the description will not be repeated here.
  • Figure 3 above shows the case where the RF unit is extended
  • Figure 4 shows the situation where the RF unit and the baseband are processed at the same location.
  • the actual base station system may be a combination of the two.
  • the baseband processing unit, the radio frequency unit, and the remote radio interface unit are all connected to the switching network with the same interface, the physical boards of these units can use the common module slots. This has the advantage that when the module implementation technology changes, the system can be easily adjusted to maintain optimal configuration when the processing power of each module changes due to changes in the configuration ratio.
  • N is an integer greater than 0
  • the baseband processing module is required for optimal full configuration.
  • the radio frequency unit is separated from the baseband processing resource, and the high-speed low-latency baseband signal exchange network is used for interconnection between the baseband processing resource pool and the radio frequency module or the remote radio frequency module, and the baseband processing resource pool is connected to the base station controller.
  • the modules are interconnected by LAN technologies such as IP and Fast Ethernet and Gigabit Ethernet to support the dynamic allocation of baseband processing resources, and support the expansion of multi-machine rejection and the base station system architecture with flexible system capacity expansion.
  • each functional module is hung on the switching network, and the high-speed differential signal serial transmission technology is used between the functional module and the switching network, so that the architecture can be conveniently implemented on various hardware platforms (such as CPCI, ATCA, etc.). ).
  • FIG. 8 shows an implementation of the above-described primary base station subsystem architecture of the present invention on a CPCI-based platform.
  • the entire system 50 is composed of a basic machine rejection 54, 55, 56 of the CPCI platform plus a baseband signal stream switching unit 51, a LAN switching unit 52, and a clock unit 53.
  • An example of a three-cabinet, two PCI bus segments per cabinet is shown in Figure 8.
  • the actual number of cabinets that can be supported is determined by the capacity of the baseband signal stream switching unit and the LA switching unit.
  • the baseband signal stream switching unit, the LAN switching unit, and the clock unit can be formed as separate devices or can be formed by modules inserted into the CPCI cabinet.
  • the module inserted into the cabinet is represented by a vertical rectangle.
  • the symbol marked in the rectangle indicates the type of the module, where BCI is the base station controller interface module; LAN is the Ethernet switch module inside the cabinet; BB is the baseband processing module; IQ -FB is machine rejection The baseband signal stream (which can be !/Q signal stream) switching module; RRI is the remote radio unit interface module; NBP is the signaling processing module; SYS is the main control module of each PCI bus segment on the backplane of the cabinet, also the machine Rejected the main control module, the SYS board of one cabinet is the main control module of the whole system, which is recorded as MSYS.
  • the SYS module can use the same physical module as NBP as its coprocessor for resource management and other purposes; CLKD is the direction The machine rejects the clock distribution module that distributes the clock signal to each module.
  • the connection relationship between the modules is also schematically illustrated in FIG. 8-13 by a bidirectional linear arrow, but does not represent a specific connection form.
  • the BCI embodies the base station controller interface unit in the basic embodiment
  • the LAN and LAN switching unit 52 embodies the LAN switching network in the basic embodiment
  • BB embodies the baseband processing unit, IQ-FB and baseband signal stream in the basic embodiment
  • the switching unit 51 embodies the baseband signal stream switching network in the basic embodiment.
  • the RRI embodies the remote radio unit interface unit in the basic embodiment.
  • the NBP embodies the signaling unit in the basic embodiment
  • SYS embodies the basic embodiment.
  • the master unit, CLKD and clock unit 53 embody the clock synchronization unit in the basic embodiment.
  • the network scheme and signal path in the system 50 are specifically described below.
  • the schematic diagram of Figure 9 illustrates the coverage of the LAN switching network 58.
  • the LAN switching network 58 is implemented by a LAN module located within the CPCI cabinets 54-55 and a LAN switching unit 52 for LAN interconnection between the cabinets.
  • the LAN module and the LAN switching unit 52 are interconnected by a cable or an optical fiber.
  • the LAN module covers the boards of each module in the cabinet with a packet switching star backplane link defined by PICMG 2.16. This architecture places all hardware modules within the coverage of the LAN switching network 58.
  • the schematic of Figure 10 illustrates the coverage of a baseband signal stream (e.g., I/Q signal stream) switching network 59.
  • the baseband signal stream switching network 59 is implemented by a switching module located within the CPCI machine reject 54-55 and a baseband signal stream switching unit 51 for inter-cabinet data stream (e.g., I/Q signal stream) switching.
  • the IQ-FB switch module and the baseband signal stream switching unit 51 are interconnected by a high speed differential signal cable such as LVDS or fiber optics.
  • the IQ-FB switch board covers the machine reject module with a custom star-high-speed serial differential signal backplane link (shown at the bottom left).
  • the schematic of Figure 11 illustrates the coverage of a clock synchronous network.
  • the clock synchronization network consists of a clock unit 53 and a CLKD clock distribution module located within the CPCI machine reject 54-55.
  • the clock unit generates the various timing signals required by tracking the synchronization reference signals from the GPS, BITS or base station controller. These timing signals are sent to the CLKD module in each CPCI cabinet 54-55, driven by CLKD and sent to the modules via the clock distribution link on the backplane.
  • CLKD can also select the synchronization reference signal extracted by the BCI module and send it to the clock unit.
  • the schematic of Figure 12 illustrates the user data stream channel.
  • the BCI receives the user data stream sent from the base station controller, completes the related processing of the interface protocol, and passes the user data stream through the LAN switching network according to the resource management control. Delivered to the specified BB module for processing.
  • the baseband digital signal stream generated by the BB is sent to the designated RRI interface module through the baseband signal stream switching network, and then sent to the corresponding radio frequency unit for transmission.
  • the RRI receives the signal sent by the radio unit, converts it into an internal baseband signal stream format, and sends it to the BB module (one or more blocks) determined by the resource management through the baseband signal stream switching network for processing.
  • the processed user data stream is sent to the BCI through the LA switching network for forwarding to the base station controller.
  • the BCI completes the function of the signaling channel transport layer (such as IUB's AAL, ATM, etc.), and then the separated signaling stream is forwarded to the NBP module through the LAN switching network for signaling protocol processing (such as Iub's NBAP, ALCAP, etc.) .
  • signaling protocol processing such as Iub's NBAP, ALCAP, etc.
  • the schematic of Figure 13 illustrates the management channel. As shown in Figure 13, the LAN switching network and the PCI bus are the main management channels.
  • the system main management function resides on the system master SYS module.
  • the system master SYS board can be elected or otherwise generated in all SYS boards.
  • the master SYS module is denoted as MSYS.
  • the management functions such as the up, power off and startup configuration parameters of each module on each PCI bus segment are completed by the MSYS under the control of the SYS module rejected by each machine.
  • the path is MSYS ⁇ (LAN) ⁇ SYS ⁇ (PCI) ⁇ Module .
  • the management channel is:
  • the path after the management channel to MSYS is the same as that of the local management terminal, and will not be described again.
  • Adjacent SYS adopts 1+1 backup scheme.
  • Adjacent CLKD uses a 1+1 backup scheme.
  • the BCI interface module can also adopt the 1+1 backup scheme, that is, there is a primary standby relationship between each pair of BCIs.
  • RRI can use 1+1 backup, or cold backup scheme. It can support N+l, N+M, N/M and other schemes when using the appropriate cross-connect equipment to the transmission network of the remote radio unit.
  • the adjacent LAN module can adopt the active/standby scheme or the load sharing scheme, and the active/standby scheme is preferred.
  • the adjacent IQ-FB module can adopt the active/standby scheme or the load sharing scheme, and the active/standby scheme is preferred.
  • the clock module is highly available with a replaceable redundantly configured clock synthesis function block.
  • the LAN switching unit and the baseband signal stream switching unit can achieve redundancy by using multiple devices with appropriate topology interconnections, or can be highly available by redundant configuration of modules within one device.
  • the cabinets can also be backed up with each other.
  • the SYS module rejected by the other machine can be replaced by a certain mechanism.
  • the BCI module is used to perform the functions (1)-(6) of the base station controller interface unit 26 in the above embodiment.
  • FIG. 14 shows an embodiment of a BCI module.
  • the BCI module 60 includes a processor 61, a base station controller-LA interface 62, and a PCI interface 63.
  • the function (1M6) is mainly performed by the base station controller - LAN interface 62.
  • the base station controller-LAN interface 62 can be implemented with a network processor.
  • the "processor" in the figure is a general purpose processor that acts as a module manager with a link to the LAN switching network.
  • the BB module is used for the functions as described above for the baseband processing unit 24.
  • FIG. 15 shows an embodiment of a BB module.
  • the BB module 70 includes a processor 71, a clock circuit 72, a baseband processor 73, a baseband data interface 74, and PCI interface 75.
  • Each BB module 70 can process one to multiple baseband I/Q signal streams.
  • the BB module 70 has a control channel to the system master unit (via the LAN) to receive and execute resource management commands.
  • the baseband processor 73 is the core and can be implemented by a suitable number of DSP or baseband processing ASICs.
  • the baseband data interface 74 completes the backplane baseband signal stream differential link drive/receive and signal format conversion functions and can be constructed by an appropriate FPGA or driver.
  • the general purpose processor 71 is the manager of the entire board.
  • the clock circuit 72 is responsible for obtaining the desired timing signals from the clock distribution network and distributing them in-board.
  • the workflow of the module is:
  • the processor 71 receives the user data stream from the backplane LAN link, performs appropriate format conversion, and sends it to the baseband processor 73 for baseband processing.
  • the data stream formed by the baseband processing passes through the baseband data interface 74. After proper signal format conversion (including multiplexing), it becomes the signal format supported by the baseband signal stream switching network and transmitted through the backplane signal link.
  • the baseband signal sent from the backplane link is converted into a form acceptable to the baseband processor 73 by the baseband data interface 74, and then sent to the baseband processor 73 for processing.
  • the obtained user data stream is sent to the processor 71 for conversion to the LAN.
  • the packet format of the switching network is forwarded.
  • Baseband processing can also be implemented with chip-level processing (spreading/despreading, scrambling/descrambling, etc.) and symbol-level processing (channel codec, multiplexing/demultiplexing, rate matching, etc.) with separate hardware blocks.
  • chip-level processing processing/despreading, scrambling/descrambling, etc.
  • symbol-level processing channel codec, multiplexing/demultiplexing, rate matching, etc.
  • Program. data streams (receive diversity) corresponding to the same channel from multiple chip-level processing modules may be combined in a symbol level processing module, and then symbol-level decision decoding is performed on the combined data streams.
  • the data stream transfer between the chip-level processing module and the symbol-level processing module is carried by the LAN network.
  • the chip-level processing module interfaces with the radio frequency part through the baseband signal stream switching network, and the symbol level processing module communicates with the base station controller interface module through the LAN network.
  • the RRI module completes the function of the remote radio interface unit in the architecture, and implements an interface between the main base station subsystem and the remote radio frequency subsystem through an appropriate remote signal transmission method.
  • the main function is to complete the internal baseband signal and the remote transmission interface. Adaptation and other functions.
  • FIG. 16 shows an embodiment of an RRI module.
  • the RRI module 80 includes a clock circuit 82, a processor 81, a signal adaptation interface 83, a differential link interface 84, a line port 85, and a PCI interface 86.
  • the module's PCI and LAN interfaces are used for management and control purposes.
  • the signal adaptation interface 83 performs functions such as signal synthesis, multiplexing/demultiplexing, and format adaptation to implement format adaptation and multiplexing between the baseband signal stream format and the remote radio unit interface signal in the primary base station subsystem. / Demultiplexing, it is also possible to complete signal synthesis (such as adding several I/Q signal streams).
  • the signal adaptation interface 83 can be implemented by an FPGA or ASIC or a suitable combination thereof.
  • the differential link port 84 performs the strap signal stream differential chain ⁇ zone motion/receive function, which can be implemented by the FPGA or an appropriate driver/receiver.
  • Line interface 85 performs remote radio unit interface line functions that can be implemented by the appropriate ASIC depending on the transmission technology used.
  • the processor 81 can be implemented with a general purpose processor and is the administrator of the entire board.
  • FIG. 17 shows an embodiment of a LAN module.
  • the LAN module 90 includes a processor 91, a packet switching engine 92, a LAN external link transceiver 93, and a LAN internal linker 94.
  • the board provides LAN switching in the cabinet and provides an upper port to the LAN switch outside the cabinet. Its main functional unit is the packet switching engine 92.
  • the packet switching engine 92 can employ an IP/Ethernet layer two/layer three switching chip.
  • the processor 91 can use a general-purpose processor as a whole board manager and run an upper layer management protocol related to the LAN switching network, such as Simple Network Management Protocol (SNMP), Ethernet Spanning-Tree (Spanning-Tree). Wait
  • SNMP Simple Network Management Protocol
  • Ethernet Spanning-Tree Spanning-Tree
  • FIG. 18 shows an embodiment of an IQ-FB module.
  • the IQ-FB module 100 includes a clock circuit 102, a processor 101, a baseband signal stream switching unit 103, a baseband external device 104, and a baseband internal device 105.
  • the board provides baseband signal flow switching within the cabinet and provides an uplink to the baseband signal flow switching unit outside the cabinet.
  • the processor 101 can be used as a manager of the module by a general purpose processor and performs management of the switching mechanism under the control of the main control module.
  • the backplane line and cable transceiver functions are performed by appropriate transceivers or devices embedded in the FPGA or ASIC.
  • the core functional unit of the board is the baseband signal stream switching unit 103.
  • the baseband signal stream switching unit 103 can employ a high speed time division multiplexing (TDM) switching scheme and is implemented in FGA.
  • TDM time division multiplexing
  • a block diagram of an FPGA example using a high-speed time-division multiplexing switching scheme to implement WCDMA FDD baseband signal stream switching is shown in Figure 19.
  • the TDM frame structure used on the transceiver line is shown in Figure 20a.
  • the mapping of baseband signal to TDM frame payload is shown in Figure 20b. .
  • there are many schemes for mapping the baseband signal to the TDM frame structure and Figure 20b is only an example.
  • each TDM frame period is one W chip FDD baseband processing spread one chip week (1/3.84 us), 64 bytes per frame, of which 4 bytes are frame header overhead, which can be framed Uses such as boundaries.
  • the remaining 60 bytes of payload are used to carry! /Q code stream, line coding can be used 8B/10B coding scheme.
  • each I/Q sample occupies 2 bytes, it can be one exchange slot every 2 bytes.
  • one I/Q signal stream occupies multiple time slots in one TDM frame.
  • the advantage of making a swap slot in multiple bytes is that the number of swap slots per frame can be reduced, thereby reducing the speed and capacity requirements of the switch fabric.
  • the advantage of having one exchange slot per byte is the flexibility to obtain maximum I/Q signal flow mapping, but for switching mechanism speed and capacity. There are higher requirements.
  • the I/Q signal stream exchange becomes the time slot and space switch of the TDM switching network.
  • TDM switching has suitable techniques to ensure that the relative phase relationship between the samples within the I/Q signal stream before and after the exchange is constant. Since the one-chip period is the frame period of one TDM frame, the switching delay is small.
  • the FIFO is for absorbing phase differences of frames on the respective receiving lines due to differences in line length, etc.
  • T is pure time slot switching
  • S is space switching.
  • the baseband signal stream switching unit 103 on the IQ-FB board can be composed of a single chip or a plurality of chips having the aforementioned TDM switching function in a TDM switching network extension method.
  • the uplink and downlink baseband signal flow switching networks can also be used. Hardware resources can be saved, and which switching network the line belongs to can be assigned by software. See Figure 21.
  • Figure 23 shows an embodiment of the SYS module.
  • the SYS module 130 includes a memory 132, a CPU 131, a PCI interface 133, and an adjacent SYS board interface 134.
  • the board is the administrator of the cabinet. It supports two PCI segments on the backplane and interfaces with its adjacent SYS board to support the primary/standby mode of the two adjacent SYS boards.
  • Hard disk or non-volatile memory is used to store system software for quick start-up and for storing management information such as logs.
  • the CPU can be implemented with a general purpose processor.
  • SYS or MSYS completes the function of the main control unit in the system architecture, and is responsible for the system management, monitoring and maintenance of the entire base station (including the remote radio unit). At the same time, the unit is also responsible for management functions such as allocation, combination, and scheduling of various processing resources in the base station.
  • MSYS may use the same physical module as NBP as the coprocessor of the master unit. NBP module solution
  • the NBP module is used to complete the function of the signaling unit in the system architecture, and is responsible for the protocol processing required for signaling between the base station and the base station controller. Taking UMTS as an example, the module performs the processing of NBAP and ALCAP protocols.
  • the signalling stream processed by this unit is obtained by the stream separation function of the Base Station Controller Interface Unit (BCI).
  • BCI Base Station Controller Interface Unit
  • the NBP module scheme is shown in Figure 23.
  • the module 140 has a PCI interface 142, a LAN interface and a CPU 141.
  • the CPU 141 is composed of a general-purpose processor having a certain processing capability, and provides signaling processing capability to the system.
  • this type of physical module can be used as a coprocessor.
  • the CLKD module is used to assign a clock signal to the internal rejection module.
  • the scheme for the CLKD module is shown in Figure 24.
  • the module 150 obtains a clock/synchronization signal from the clock unit, buffers/drives 153, and distributes it to the module.
  • the reference clock signal from the base station controller line is selected 152 and sent to the clock unit.
  • the CPU 151 completes the management/monitoring of the board and has an R232 or LAN interface to the backplane.
  • LAN switches can be implemented by Layer 2/3 Layer switches using IP/Ethernet technology.
  • Baseband signal stream switching unit scheme
  • the baseband signal stream switching unit selects different schemes according to different switch systems.
  • IP/Ethernet technology it can be implemented by a Layer 2/3 layer switch;
  • TDM technology when adopting TDM technology, a chip or module of the switching function shown in Figure 19 can be used, according to the expansion of the TDM switching network.
  • the clock unit is the core of the system clock network.
  • the scheme is shown in Figure 25.
  • the various frequencies shown in the figure are only examples.
  • the mutually active, alternate clock synthesis modules 163, 164 synthesize various required clock/synchronization signals based on the reference signals and are distributed to the cabinets via the drive circuit 162.
  • the CPU 161 performs management control functions and protocol functions related to clock synchronization, and has a LAN interface to communicate with other modules.

Landscapes

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

Abstract

L'invention concerne un système de station de base centralisé comprenant un sous-système de station de base principal et un ou plusieurs sous-systèmes de station de base éloignés, le sous-système de station de base principal comprenant : une ou plusieurs unités d'interface contrôleur de station de base ; une unité de signalisation ; une ou plusieurs unités de traitement de bande de base ; une ou plusieurs unités d'interface radiofréquence éloignées ; une unité de synchronisation d'horloge ; le premier réseau de commutation permettant de connecter l'unité d'interface de contrôleur de station de base, l'unité de signalisation, l'unité de traitement de bande de base, l'unité d'interface radio éloignée et l'unité de synchronisation ; le second réseau de commutation permettant l'échange d'un flux de signaux de bande de base entre le module de traitement de bande de base et l'unité d'interface radio éloignée ; un réseau de transmission de signaux permettant la transmission d'un flux de signaux de bande de base entre l'unité d'interface radio éloignée et le sous-système radio éloigné ; ainsi qu'une unité contrôleur principal, qui est couplée au premier réseau de commutation, permettant de contrôler ladite unité dans la station de base.
PCT/CN2004/000841 2004-07-21 2004-07-21 Architecture extensible de systeme de station de base centralise WO2006007762A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2004800434664A CN1977550B (zh) 2004-07-21 2004-07-21 集中式基站系统的可扩展体系结构
PCT/CN2004/000841 WO2006007762A1 (fr) 2004-07-21 2004-07-21 Architecture extensible de systeme de station de base centralise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2004/000841 WO2006007762A1 (fr) 2004-07-21 2004-07-21 Architecture extensible de systeme de station de base centralise

Publications (1)

Publication Number Publication Date
WO2006007762A1 true WO2006007762A1 (fr) 2006-01-26

Family

ID=35784859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2004/000841 WO2006007762A1 (fr) 2004-07-21 2004-07-21 Architecture extensible de systeme de station de base centralise

Country Status (2)

Country Link
CN (1) CN1977550B (fr)
WO (1) WO2006007762A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101902763A (zh) * 2009-05-27 2010-12-01 大唐移动通信设备有限公司 一种广播波束权值的配置和更新方法及装置
CN101090298B (zh) * 2006-06-14 2011-04-20 大唐移动通信设备有限公司 一种射频拉远基站操作维护通道的建立方法
CN102170692A (zh) * 2010-07-01 2011-08-31 武汉盛华微系统技术股份有限公司 基于北斗卫星导航系统的授时控制系统及控制方法
CN102281625A (zh) * 2010-06-13 2011-12-14 武汉盛华微系统技术股份有限公司 授时控制系统及控制方法
WO2015076480A1 (fr) * 2013-11-19 2015-05-28 주식회사 쏠리드 Procédé de synchronisation temporelle entre unités de communication et système associé
WO2017004989A1 (fr) * 2015-07-09 2017-01-12 中兴通讯股份有限公司 Procédé et dispositif de commande, et support de stockage informatique
CN114095079A (zh) * 2021-11-12 2022-02-25 中国电子科技集团公司第二十九研究所 一种电子设备远程联试的装置及方法
WO2023087304A1 (fr) * 2021-11-22 2023-05-25 上海华为技术有限公司 Procédé de traitement de données et appareil associé
CN116887288A (zh) * 2023-07-10 2023-10-13 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所) 一种特殊场景下5g网络部署方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101938452B (zh) * 2009-07-01 2013-01-09 大唐移动通信设备有限公司 一种通信装置
CN104144529B (zh) * 2013-05-10 2017-11-21 中国移动通信集团公司 一种远端射频单元、基带单元和分布式基站
CN112738648A (zh) * 2020-11-02 2021-04-30 杭州电子科技大学 一种基于集中供电的分布式地下皮基站系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1176728A (zh) * 1995-02-28 1998-03-18 诺基亚电信公司 无线电系统的基站
CN1321048A (zh) * 2000-06-29 2001-11-07 深圳市中兴通讯股份有限公司 一种多模块结构的基站控制器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1176728A (zh) * 1995-02-28 1998-03-18 诺基亚电信公司 无线电系统的基站
CN1321048A (zh) * 2000-06-29 2001-11-07 深圳市中兴通讯股份有限公司 一种多模块结构的基站控制器

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101090298B (zh) * 2006-06-14 2011-04-20 大唐移动通信设备有限公司 一种射频拉远基站操作维护通道的建立方法
CN101902763A (zh) * 2009-05-27 2010-12-01 大唐移动通信设备有限公司 一种广播波束权值的配置和更新方法及装置
CN102281625A (zh) * 2010-06-13 2011-12-14 武汉盛华微系统技术股份有限公司 授时控制系统及控制方法
CN102170692A (zh) * 2010-07-01 2011-08-31 武汉盛华微系统技术股份有限公司 基于北斗卫星导航系统的授时控制系统及控制方法
WO2015076480A1 (fr) * 2013-11-19 2015-05-28 주식회사 쏠리드 Procédé de synchronisation temporelle entre unités de communication et système associé
WO2017004989A1 (fr) * 2015-07-09 2017-01-12 中兴通讯股份有限公司 Procédé et dispositif de commande, et support de stockage informatique
CN114095079A (zh) * 2021-11-12 2022-02-25 中国电子科技集团公司第二十九研究所 一种电子设备远程联试的装置及方法
WO2023087304A1 (fr) * 2021-11-22 2023-05-25 上海华为技术有限公司 Procédé de traitement de données et appareil associé
CN116887288A (zh) * 2023-07-10 2023-10-13 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所) 一种特殊场景下5g网络部署方法

Also Published As

Publication number Publication date
CN1977550B (zh) 2011-05-11
CN1977550A (zh) 2007-06-06

Similar Documents

Publication Publication Date Title
WO2006026891A1 (fr) Systeme de station de base centralisee a base de plate-forme d'architecture atca
EP2592863B1 (fr) Équilibrage de charge distribuée dans un réseau d'accès radio
CN1538694A (zh) 宽带网络中高可用性、直接、灵活及可缩放数据分组交换的系统和方法
JP2001527368A (ja) 移動通信用の非同期転送モードのプラットフォーム
CN1440608A (zh) 具有网格化底板的系统以及用于通过该系统传输数据的过程
WO2003073676A2 (fr) Systeme radio dote d'un traitement en temps reel distribue
CN107637027B (zh) 无线电接入网络中基站之间通信的系统、方法和存储介质
WO2006007762A1 (fr) Architecture extensible de systeme de station de base centralise
WO2008089660A1 (fr) Procédé, dispositif et système de réseau radio pour une unification d'accès radio
WO2005104576A1 (fr) Systeme sans fil distribue destine a la commande centrale d'une ressource
CN102255648B (zh) 一种卫星移动通信地面站系统
WO2006010296A1 (fr) Procede d'attribution de ressource de traitement de canal et station de base centralisee connexe
WO2008119295A1 (fr) Contrôleur réparti de station de base et unité de celui-ci, et procédé de transmission de données
CN102255649B (zh) 一种卫星移动通信地面站系统
US20020049048A1 (en) Method and device (RNC) for controlling a radio cell cluster consisting of a plurality of radio cells of a multistandard radio network
WO2002017580A1 (fr) Architecture de commutation double, destinee aux transports par paquets/circuits melanges sur reseau optique synchrone(sonet)/reseau hierarchique numerique synchrone(sdh)/reseau de multiplexage en longueur d'onde dense(dwdm)
WO2011103842A2 (fr) Procédé, appareil, système pour la transmission hybride et la mise en parallèle de service à commutation de circuits et de service à commutation de paquets
CN102427380B (zh) 一种卫星移动通信地面站系统
JP7399093B2 (ja) 無線通信ネットワークに関するフロントホールシステム
US7647072B2 (en) IP switching based distributed radio network controller
CN102427381A (zh) 一种卫星基站系统
US7356025B2 (en) Switching apparatus for switching data between bitstreams
Park et al. An architecture of multi-layered SDN based LTE/WiFi network for multi-interface D2D users
US20010033561A1 (en) Combination switch and routing-switching radio base station
CN111586500B (zh) 一种分布式同步复用装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 200480043466.4

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase