WO2007128243A1 - Station de base permettant de réaliser un réseau de groupes auto-adaptatifs, système d'accès sans fil et procédé de réseau de groupes auto-adaptatifs associé - Google Patents

Station de base permettant de réaliser un réseau de groupes auto-adaptatifs, système d'accès sans fil et procédé de réseau de groupes auto-adaptatifs associé Download PDF

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Publication number
WO2007128243A1
WO2007128243A1 PCT/CN2007/001489 CN2007001489W WO2007128243A1 WO 2007128243 A1 WO2007128243 A1 WO 2007128243A1 CN 2007001489 W CN2007001489 W CN 2007001489W WO 2007128243 A1 WO2007128243 A1 WO 2007128243A1
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WIPO (PCT)
Prior art keywords
base station
processing module
neighboring
radio frequency
area
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PCT/CN2007/001489
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English (en)
Chinese (zh)
Inventor
Jianxiong He
Guangqing Xi
Yenan Bie
Yiqian Zhang
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Zte Corporation
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Publication of WO2007128243A1 publication Critical patent/WO2007128243A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow

Definitions

  • Base station wireless access system and adaptive networking method for implementing adaptive networking
  • the present invention relates to a base station, a wireless access system, and a networking method thereof in the field of mobile communications.
  • the prior art wireless access system includes a wireless access controller and a plurality of base stations connected thereto.
  • a radio access controller is called a radio network controller (RNC), and R C and NODEB (node B, which is also a type of base station) form a radio access network RAN.
  • RNC Radio Network Controller
  • NODEB node B, which is also a type of base station
  • GSM Global System for Mobile Communications
  • BSC base station controller
  • BSC and BTS base station
  • BSS base station subsystem
  • the entities that complete the radio access control in the various communication systems are all referred to by the radio access controller in the present invention.
  • the base station is divided into a base station and a neighbor base station, and the neighbor base station is also a base station of the local area.
  • a prior art wireless access system has the structure shown in FIG. 1, and includes: a local area base station 101, a neighbor base station 102 (only one shown), and a radio access controller 103.
  • the local area base station 101 mainly performs transmitting wireless communication signals to the user, receives wireless communication signals from the user, and simultaneously interconnects with the wireless access controller 103 to provide communication between the communication system and the user terminal 104.
  • the connection of the physical layer Generally, the base station cannot detect the surrounding wireless environment, or simply probes, can not detect the signals of the neighboring cells, and analyzes the information to implement adaptive configuration. For the WCDMA system, configure the appropriate primary scrambling code to reduce interference with the adjacent interval.
  • the use of such wireless access systems in complex wireless communication environments requires communication network performance to be guaranteed and improved through prior planning and extensive field detection. A large number of field tests and frequent analysis and verification are often time consuming and labor intensive.
  • the technical problem to be solved by the present invention is to provide a wireless access system capable of implementing adaptive networking, which can conveniently and quickly acquire information of a neighboring base station and implement adaptive configuration of the base station.
  • the present invention provides a wireless access system that can implement adaptive networking, including a wireless access controller and a base station that are connected to each other, and the base station is configured to complete communication with the local area of the user terminal.
  • the base station information is reported to the radio access controller, where the base station is further configured to acquire information of a neighboring base station, cooperate with the radio access controller, and complete an attribute of the base station adaptive networking. Selection and configuration of parameters.
  • the above wireless access system may also have the following features:
  • the base station selects an attribute parameter of the base station in the local area according to the data required by the ad hoc network and the acquired neighbor base station information, and then sends an allocation request to the radio access controller, and after obtaining the confirmation, completes the corresponding base station in the local area.
  • Parameter configuration or
  • the base station reports the acquired neighboring cell base station information to the radio access controller, and the radio access controller selects the base station according to the data required by the base station self-organizing network and the neighboring cell base station information.
  • the attribute parameter is assigned to the base station, and the base station completes the corresponding parameter configuration after receiving.
  • the above wireless access system may also have the following features:
  • the base station includes a data processing and communication control module, a baseband processing module, a downlink radio frequency processing module, a mode selection and filtering module, and an antenna, which are sequentially connected, and are connected between the mode selection and filtering module and the baseband processing module.
  • the uplink RF processing module and the adjacent area signal RF processing module of the area where:
  • the mode selection and filtering module is configured to turn on the path of the antenna and the neighboring area signal radio frequency processing module when operating in the adjacent area signal receiving mode; when the working mode is in the normal mode, turn on the antenna The path with the downlink RF processing module of the area and the uplink RF processing module of the area;
  • the neighboring area signal radio frequency processing module is configured to perform radio frequency processing on the received neighboring cell base station signal, and then output the signal to the baseband processing module;
  • the baseband processing module not only processes the data in the local area, but also processes the data output by the neighboring area signal radio frequency processing module, parses the neighboring base station information, and outputs the information to the data processing and communication control module;
  • the data processing and communication control module in addition to the processing and control of the signal in the local area, cooperates with the radio access controller to complete the attribute parameters of the adaptive networking according to the neighbor base station information output by the baseband processing module. Selection and configuration.
  • the above wireless access system may also have the following features:
  • the neighbor base station information acquired by the baseband processing module includes primary scrambling code information of the same frequency neighboring base station, and the data processing and communication control module selects a base station of the same frequency neighboring base station according to the primary scrambling code information.
  • the primary scrambling code that is different and has the least interference with each other, and then sends the allocation request of the primary scrambling code to the radio access controller, and after confirmation, 'completes the configuration of the primary scrambling code.
  • the above wireless access system may also have the following features:
  • the zero intermediate frequency mode that is, the IQ modulation and demodulation modes are adopted.
  • the wireless access system may further have the following features: the mode selection and filtering module further includes a switch controller, an electronic switch, and a duplexer, where:
  • the switch controller is configured to set a neighboring area signal receiving mode after the base station is powered on, control the electronic switch to connect the antenna and the duplexer, complete the adaptive parameter configuration of the adaptive networking, and then switch to the normal mode, and control
  • the electronic switch is connected to the antenna and the adjacent area signal radio frequency processing module;
  • An electronic switch the common port is connected to the antenna, and the two connection ports are respectively connected to the duplexer and the adjacent area signal radio frequency processing module, and are configured to connect the antenna to the duplex under the control of the switch controller Or neighboring area signal RF processing module;
  • the duplexer has one end connected to one connection end of the electronic switch, and the other end connected to the downlink RF processing module of the area and the uplink RF processing module of the area for filtering and suppressing the out-of-band signal.
  • Another technical problem to be solved by the present invention is to provide a base station that can implement adaptive networking, which can conveniently and quickly acquire information of a neighboring base station and implement adaptive configuration of the base station.
  • the present invention provides a base station capable of implementing adaptive networking, including a baseband processing module for performing data processing in the local area, a downlink radio frequency processing module connected to the baseband processing module, and an uplink of the local area.
  • the radio frequency processing module, the data processing and communication control module, and the antenna are further characterized by: a mode selection and filtering module connected to the antenna, the downlink radio frequency processing module of the local area, the uplink radio frequency processing module of the local area, and the connection mode Selecting a neighboring area signal radio frequency processing module between the filtering module and the baseband processing module, wherein: the mode selection and filtering module is configured to turn on the antenna and the adjacent area signal radio frequency processing when operating in the adjacent area signal receiving mode The path of the module; when working in the normal mode, turning on the path of the antenna and the downlink radio frequency processing module of the local area and the uplink radio processing module of the local area; the neighboring area signal radio frequency processing module is configured to receive the signal of the neighboring base station Performing radio frequency processing
  • the baseband processing module is further configured to process data output by the neighboring area signal radio frequency processing module, parse the neighbor base station information, and output the data to the data processing and communication control module;
  • the data processing and communication control module is further configured to cooperate with the radio access controller to complete selection and configuration of attribute parameters of the adaptive networking according to the neighbor base station information output by the baseband processing module.
  • the foregoing base station may have the following features:
  • the data processing and communication control module selects an attribute parameter of the base station in the local area according to the data required by the ad hoc network and the acquired neighbor base station information, and then sends an allocation request to the radio access controller, and after obtaining the confirmation, Complete the corresponding parameter configuration of the base station in this area; or
  • the data processing and communication control module reports the acquired neighbor base station information to the radio access controller, and the radio access controller selects data according to the base station self-organizing network and the neighbor base station Information, selecting an attribute parameter for the base station and assigning it to the base station, and the base station completes the corresponding parameter configuration after receiving.
  • the neighbor base station information obtained by the baseband processing module includes one or any combination of a primary scrambling code, a frequency, and power information of a neighboring base station, and the data processing and communication control module and the wireless access controller cooperate with each other to select and configure.
  • the adaptive networking attribute parameter includes one or any combination of primary scrambling code, frequency, and power information, and is selected to select an attribute parameter that has the least interference with the neighboring base station.
  • the mode selection and filtering module further includes a switch controller, an electronic switch, and a duplexer, where:
  • the switch controller is configured to control the electronic switch to communicate with the antenna and the duplexer in a normal mode, and control the electronic switch to communicate with the antenna and the neighboring area signal radio frequency processing module in a neighboring area signal receiving mode;
  • the common port of the electronic switch is connected to an antenna, and the two connection ports are respectively connected to a duplexer and a neighboring area signal radio frequency processing module, and are configured to perform the antenna and the duplex under the control of the switch controller.
  • the neighboring area signal RF processing module is connected;
  • One end of the duplexer is connected to one connection end of the electronic switch, and the other end is connected to the downlink radio frequency processing module of the local area and the uplink radio frequency processing module of the local area for filtering and suppressing the out-of-band signal.
  • the mode selection and filtering module further includes a switch controller, an electronic switch, and a duplexer, where:
  • duplexer One end of the duplexer is connected to the antenna, and the other end is connected to the common end of the electronic switch and the uplink frequency processing module of the local area for filtering and suppressing the out-of-band signal;
  • the common end of the electronic switch is connected to the duplexer, and the two connection ports are respectively connected to the downlink radio frequency processing module and the adjacent area signal radio frequency processing module of the local area, and are used under the control of the switch controller.
  • the duplexer is connected to the downlink radio frequency processing module or the neighboring area signal radio frequency processing module of the local area;
  • the switch controller is configured to control the electronic switch to communicate with the duplexer and the neighboring area signal radio frequency processing module in a neighboring area signal receiving mode, and control the electronic switch to communicate with the duplexer and in a normal mode The downlink RF processing module in this area.
  • the foregoing base station may have the following features:
  • the switch controller sets the working mode to the neighboring cell receiving mode after the base station is powered on, and then switches to the normal mode after completing the configuration of the adaptive parameter of the adaptive networking.
  • the foregoing base station may have the following features:
  • the zero intermediate frequency mode that is, the IQ modulation and demodulation modes are adopted.
  • the foregoing base station may have the following features:
  • the neighbor base station information acquired by the baseband processing module includes primary scrambling code information of the same frequency base base station, and the data processing and communication control module selects one of the same base station base station according to the primary scrambling code information.
  • Another technical problem to be solved by the present invention is to provide a method for implementing adaptive networking, which can conveniently and quickly acquire information of a neighboring base station and implement adaptive configuration of the base station.
  • the present invention provides a method for implementing adaptive networking, including the following steps:
  • the base station first works in the neighboring area signal receiving mode, turns on the processing path of the downlink signal of the neighboring area, completes the cell search process, receives the neighboring area signal, and parses and obtains the information of the neighboring base station;
  • the base station cooperates with the radio access controller to complete selection and configuration of attribute parameters of the base station adaptive networking in the local area.
  • the above method may also have the following features:
  • the step (c) further includes the following steps: the base station switches from the neighboring cell signal receiving mode to the normal mode, completes the function of the ordinary base station, and provides the user with the wireless access service by using the configured primary scrambling code.
  • the above method may further have the following features: in the step (c),
  • the base station selects an attribute parameter of the base station according to the data required by the ad hoc network and the acquired neighbor base station information, and then sends an allocation request to the radio access controller, and after obtaining the confirmation, completes the corresponding base station of the local area.
  • Parameter configuration or
  • the base station reports the acquired neighboring cell base station information to the radio access controller, and the radio access controller selects the base station according to the data required by the base station self-organizing network and the neighboring cell base station information.
  • the attribute parameter is assigned to the base station, and the base station completes the corresponding parameter configuration after receiving.
  • the above method may also have the following features:
  • the base station selects an attribute parameter of the base station in the local area according to the data required by the ad hoc network and the acquired neighbor base station information, and then sends an allocation request to the radio access controller;
  • the access controller returns an unintended response, and the base station selects another attribute parameter that satisfies the requirement, and re-sends the request to the radio access controller, and after obtaining the confirmation, completes the corresponding parameter configuration of the base station in the local area.
  • the above method may also have the following features:
  • the acquired neighbor base station information includes one or any combination of primary scrambling code, frequency, and power information of the neighboring base station; and in step (c), the selected and configured adaptive group
  • the network attribute parameter includes one or any combination of the primary scrambling code, the frequency, and the power information.
  • the above method may also have the following features:
  • the neighboring cell base station information obtained in the step (b) includes the primary scrambling code information of the intra-frequency neighboring cell base station;
  • the step (c) is: according to the primary scrambling code information, the base station of the local area selects one different from the same-frequency neighboring cell base station and mutually
  • the primary scrambling code with the least interference is then sent to the radio access controller to send the allocation request of the primary scrambling code, and after obtaining the confirmation, the configuration of the primary scrambling code is completed.
  • a further technical problem to be solved by the present invention is to provide a base station that can acquire information of a base station in a neighboring cell, and can conveniently and quickly acquire information of a base station of a neighboring cell.
  • the present invention provides a base station capable of acquiring neighbor base station information, including a baseband processing module for performing data processing in the local area, a downlink radio frequency processing module connected to the baseband processing module, and an uplink of the local area.
  • the radio frequency processing module, the data processing and communication control module, and the antenna are further characterized by: a mode selection and filtering module connected to the antenna, the downlink radio frequency processing module of the local area, the uplink radio frequency processing module of the local area, and the connection mode Selecting a neighboring area signal RF processing module between the filtering module and the baseband processing module, wherein:
  • the mode selection and filtering module is configured to turn on the path of the antenna and the neighboring area signal radio frequency processing module when operating in the neighboring area signal receiving mode; when operating in the normal mode, turn on the antenna and the downlink of the area The path of the RF processing module and the uplink RF processing module of the area;
  • the neighboring area signal radio frequency processing module is configured to perform radio frequency processing on the received neighboring cell base station signal, and then output the signal to the baseband processing module;
  • the baseband processing module is further configured to process data output by the neighboring area signal radio frequency processing module, and parse the neighbor base station information.
  • the mode selection and filtering module further includes a switch controller, an electronic switch, and a duplexer, where:
  • the switch controller first sets an operation mode to a normal mode, controls the electronic switch to communicate with the antenna and the duplexer, completes parameter configuration, and then switches to a neighboring area signal receiving mode, and controls the electronic switch to communicate with the antenna and Neighborhood signal RF processing module;
  • the common port of the electronic switch is connected to an antenna, and the two connection ports are respectively connected to a duplexer and a neighboring area signal radio frequency processing module, and are configured to perform the antenna and the duplex under the control of the switch controller.
  • the neighboring area signal RF processing module is connected;
  • One end of the duplexer is connected to one connection end of the electronic switch, and the other end is connected to the downlink radio frequency processing module of the local area and the uplink radio frequency processing module of the local area for filtering and suppressing the out-of-band signal.
  • the mode selection and filtering module further includes a switch controller, an electronic switch, and a duplexer, where:
  • duplexer One end of the duplexer is connected to the antenna, and the other end is connected to the common end of the electronic switch and the uplink frequency processing module of the local area for filtering and suppressing the out-of-band signal;
  • the common end of the electronic switch is connected to the duplexer, and the two connection ports are respectively connected to the downlink radio frequency processing module and the adjacent area signal radio frequency processing module of the local area, and are used under the control of the switch controller.
  • the duplexer is connected to the downlink radio frequency processing module or the neighboring area signal radio frequency processing module of the local area;
  • the switch controller first sets an operation mode to a normal mode, controls the electronic switch to communicate with the antenna and the duplexer, completes parameter configuration, and then switches to a neighboring area signal receiving mode, and controls the electronic switch to communicate with the antenna and Neighbor signal radio processing module.
  • Another technical problem to be solved by the present invention is to provide a method for acquiring information of a base station in a neighboring cell, which can conveniently and quickly acquire information of a base station of a neighboring cell.
  • the present invention provides a method for acquiring neighbor base station information, including the following steps:
  • the base station first works in the neighboring area signal receiving mode, turns on the processing path of the downlink signal of the neighboring area, completes the cell search process, receives the neighboring area signal, and parses the neighboring area base station information.
  • the base station of the invention has a normal transmitting and receiving function, and adopts a radio frequency path sharing switching technology to acquire neighboring base station information, and is a basic device of a wireless access system with an adaptive configuration.
  • the base station in the wireless access system can perform detailed scanning on the surrounding wireless environment, and completes the analysis of the information of the neighboring base station and the information of the self-transmitted information together with the wireless access controller, and cooperates with the network for static planning.
  • FIG. 1 is a schematic diagram of networking of a wireless access system in the prior art
  • FIG. 2 is a schematic diagram of networking of a wireless access system of an adaptive networking according to the present invention
  • FIG. 3 is a schematic structural diagram of a base station capable of acquiring base station information of the present invention.
  • FIG. 4 is a schematic diagram of an implementation structure of a mode selection and filtering module in FIG. 3;
  • FIG. 5 is a schematic illustration of another implementation of the mode selection and filtering module of Figure 3. Preferred embodiment of the invention
  • WCDMA Wideband Code Division Multiple Access
  • the WCDMA mobile communication system uses the primary scrambling code to distinguish the cells, the downlink uses the channelization code to distinguish the physical channels, and the uplink uses the scrambling code to distinguish the users.
  • the base station in this area must A suitable primary scrambling code must be selected. Therefore, for the WCDMA system, the present invention acquires the information of the neighboring base station information, mainly for the configuration of the primary scrambling code, and selects an appropriate primary scrambling code to configure the transmitting and receiving parameters of the base station in the local area.
  • the primary scrambling code adaptation scheme selects an appropriate primary scrambling code, and can quickly establish a new base station that does not interfere with the neighboring cell and is also less interfered.
  • FIG. 2 is a schematic diagram of networking of a WCDMA wireless access system according to this embodiment. As shown in the figure, it includes: a local area base station 201, a neighboring base station 202, and a radio network controller 203 (which may be a base station controller in other communication systems), and the base station and the neighboring base station are divided into local area bases for convenience of explanation.
  • the base station in this area may be any base station in the system, and any base station may also adopt the new base station of the present invention.
  • the local area base station 201 and the neighboring base station 202 are both connected to the RNC 203, but can also be connected to different NCs according to the geographical, network planning and R C access capabilities, and the RNCs are communicable.
  • the base station in the local area not only completes communication with the local area of the user terminal 204, but also reports the information about the base station of the neighboring cell with the RNC, and can also obtain related information of the neighboring base station, and according to the obtained information of the neighboring base station,
  • the base station adaptively selects the attribute parameter, and then reports the radio network controller to complete the parameter configuration of the adaptive network; or reports the acquired neighbor base station information to the radio network controller, and is controlled by the radio network.
  • the device adaptively selects an attribute parameter for the base station according to the neighbor base station information and allocates the attribute parameter to the base station, and completes parameter configuration of the adaptive networking.
  • the structure of the base station that can obtain the neighboring cell site information in FIG. 2 is as shown in FIG. 3, and includes a data processing and communication control module 303, a baseband processing module 301, a downlink radio frequency processing module 302, and a mode selection and filtering module 304.
  • the antenna 307 further includes a local area uplink radio processing module 305 and a neighboring area radio frequency processing module 306 connected between the baseband processing module 301 and the mode selection and filtering module 304. It can be seen that, compared with the existing base station, the neighboring area signal radio frequency processing module 306 is added, and the mode selection function is added on the basis of the existing filtering module of the existing base station, and a new mode selection and filtering module 304 is formed.
  • the baseband processing module 301 is configured to perform downlink baseband data access, digital shaping filtering, peak clipping processing, digital up-conversion, carrier combining, digital pre-distortion, D/A conversion, and the like. Analog signal A/D conversion, digital down conversion, digital shaping filtering, and deceleration are used to output low-rate data.
  • the signal processed by the baseband processing module 301 includes the signal of the base station of the local area and the signal of the neighboring base station, and sends the parsed neighbor base station information (the main scrambling code of the section included in this embodiment) to the data processing and communication control module. .
  • the downlink radio frequency processing module 302 of the local area is configured to output the downlink radio frequency signal of the synthesized WCDMA radio frequency band by using the signal sent by the baseband processing module 201, including baseband filtering, up-conversion (complex modulation mixing or real frequency conversion), and VGA. (Variable Gain Amplifier), PLL (Phase Locked Loop), VCO (Voltage Controlled Oscillator).
  • the uplink RF processing module 305 is configured to perform down-conversion processing on the filtered uplink RF signal, filter, and amplify and send it to the baseband processing module 201 for processing.
  • the module includes an LNA (Low Noise Amplifier) and a down-conversion. (Multi-modulation mixing or real-frequency conversion), PLL, VCO, baseband filtering, AGC (Automatic Gain Control).
  • the neighboring area signal radio frequency processing module 306 is configured to perform radio frequency processing on the neighboring cell base station signals, and the functional structure is similar to the uplink radio frequency processing module 305 in the local area, except that the frequency of the processing object is different.
  • the main work of the RF processing part is frequency conversion processing (of course, there are some other processing).
  • frequency conversion processing There are two ways of frequency conversion processing: First, IQ modulation and demodulation methods, that is, the so-called zero intermediate frequency method.
  • the downlink radio processing module of the area is equivalent to the IQ modulation module in the prior application file, and the uplink radio frequency processing module and the neighboring area signal radio frequency processing module of the local area are equivalent to the first IQ demodulation module and the second IQ demodulation module.
  • the second is the real IF mode, there are some differences, but it can also be achieved. This embodiment adopts the first mode.
  • the data processing and communication control module 303 is a main control module of the base station, and is configured to provide data processing, protocol processing, control, and communication capability with the RNC for the base station, including the capability of performing protocol processing on the entire 3GPP, and performing signaling and data packets. Processing, providing settings and control for the operation of other modules in the system, and providing support for inter-module cooperation. When in normal mode, communication with the RNC is completed to exchange data with the user terminal. In this embodiment, the module is further configured to cooperate with the connected RNC to complete parameter configuration of the adaptive networking.
  • the module selects the primary scrambling code of the base station in the local area according to the data required by the ad hoc network and the acquired neighbor base station information, and then sends a primary scrambling code allocation request to the RNC, carrying the selected primary scrambling code, and obtaining the confirmation. After that, the primary scrambling code configuration of the base station in the area is completed;
  • the module reports the acquired neighbor base station information to the RNC, and the NC selects a primary scrambling code for the base station according to the data required by the base station self-organizing network and the neighbor base station information, and allocates the primary scrambling code to the local base station. After the base station in this area receives the configuration of the primary scrambling code.
  • the main scrambling code information of the neighboring base station and the saved ad hoc network that are the same frequency as the base station of the local area are selected, and one main station scrambling code is selected differently from the neighboring base stations.
  • the primary scrambling code with the smallest mutual interference is that the primary scrambling code is different from the primary scrambling code of all acquired intra-frequency neighboring regions, and the mutual interference with the neighboring region with the largest interference signal is the smallest.
  • the data required by the above-mentioned ad hoc network may be the frequency, power, primary scrambling code, and the like of the base station and the neighboring base station in the local area.
  • the specific selection strategy of the primary scrambling code of the present invention is not limited.
  • the mode selection and filtering module 304 is configured to perform switching of the radio frequency path according to the current working mode, so that the base station operates in the neighboring area signal receiving mode or the normal mode.
  • Figure 4 shows a structure of the module including an electronic switch 401, a switch controller 402 and a duplexer 403. among them:
  • the switch controller 402 is configured to control the electronic switch to communicate with the antenna and the duplexer in a neighboring signal receiving mode, and control the electronic switch to communicate with the antenna and the adjacent area signal RF processing module in a normal mode.
  • the working module can be set to the neighboring area signal receiving mode after the base station is powered on. After the adaptive parameter configuration of the adaptive networking is completed, the working mode is transferred to the normal mode, and the required information can be obtained from the baseband processing module.
  • the electronic switch 401 has a common port connected to the antenna, and the two connection ports are respectively connected to the duplexer and the neighboring area signal radio frequency processing module, and are configured to connect the antenna to the pair under the control of the switch controller Instrument or adjacent area signal RF processing module;
  • the Hanji 403 the end is connected to one connection end of the electronic switch, and the other end is connected to the downlink radio frequency processing module of the local area and the uplink radio frequency processing module of the local area for filtering and suppressing the out-of-band signal.
  • the switch controller 402 switches the electronic switch 401 to the second path, and the downstream radio frequency signal of the neighboring base station 202 passes through the electronic switch 401, enters the neighboring area signal radio frequency processing module 306, and then is sent to the baseband.
  • the processing module 301 processes the acquiring base station 202. Primary scrambling code.
  • the switch controller 402 switches the electronic switch 401 to the first path, and turns on the transmission path and the receiving path of the local area. At this time, the downlink signal of the base station in the local area is transmitted, and the uplink signal from the user terminal is received, and the normal mode is completed. Under the transmit and receive functions, the duplexer is used for filtering and suppressing out-of-band signals.
  • the structure of the base station of the present invention is provided with a processing path of a downlink signal of a neighboring cell, and the base station can operate in a normal mode and a neighboring cell signal receiving mode.
  • the normal mode the processing path of the uplink and downlink signals of the local area is turned on, the function of the ordinary base station is completed, and the physical layer connection is provided for the communication between the communication system and the user terminal.
  • the processing path of the downlink signal of the neighboring area is turned on, the signal of the base station base station is received and parsed to obtain the information of the neighboring base station, and after the selection and configuration of the primary scrambling code is completed together with the radio network controller,
  • the receiving working mode is switched to the normal mode, and the configured primary scrambling code is used to provide the user with a wireless access service.
  • the method includes the following steps:
  • Step 1 After the base station in the local area is powered on, first work in the neighboring area signal receiving mode, complete the cell search process, and obtain information of the neighboring base station, including the primary scrambling code information;
  • the cell search process performed after the base station is powered on in the local area is similar to the cell search process performed after the user terminal is powered on. It also only completes the cell search process and does not perform other processes after cell search, such as PLMN (Public Land Mobile Network) selection and location registration.
  • PLMN Public Land Mobile Network
  • the receiving working mode only the signals from the neighboring base stations that use the same working frequency point as the base station in the local area are searched, and the neighboring base stations are sorted according to the RSSI (Received Signal Strength Indication) sequence. And parsing the broadcast information of the corresponding neighboring base station to obtain the primary scrambling code information of the neighboring base station.
  • RSSI Receiveived Signal Strength Indication
  • Step 2 The base station in the local area adaptively selects a primary scrambling code according to the acquired information of the neighboring base station and the data required by the self-organizing network, and sends a primary scrambling code allocation request to the RNC, carrying the information of the selected primary scrambling code; It is through this process to complete its own adaptive primary scrambling code planning work.
  • the primary scrambling code selected by the base station in the local area may be a primary scrambling code that is different from the primary scrambling code of all acquired intra-frequency neighboring cells and has the least interference with the neighboring cell with the largest interference signal, as described above.
  • Step 3 After receiving the primary scrambling code allocation request, the RNC globally allocates a policy according to the primary scrambling code. If it is determined, the requested primary scrambling code may be allocated to the base station, and the agreed response is returned, otherwise the unintended response is returned.
  • Step 4 After receiving the response from the RNC, the base station in the local area performs the step 6 in response to the agreed response (ie, the confirmation, as described above), and if the response is unsatisfactory, step 5 is performed;
  • the agreed response ie, the confirmation, as described above
  • Step 5 The base station in the local area selects another primary scrambling code that is different from the neighboring base station, and sends a primary scrambling code allocation request to the RNC to carry the new primary scrambling code, and returns to step 3;
  • a primary scrambling code that is different from the same-frequency neighboring cell base station and has the second smallest interference with the neighboring cell with the largest interference signal may be selected.
  • other selection strategies may be employed in the present invention.
  • Step 6 The base station in this area goes into the normal mode and ends.
  • the base station in this area switches to the normal working mode.
  • the base station in the wireless access system of the present invention has the function of the ordinary transceiver, and completes the transmission of the downlink signal, and the uplink signal. Receive, providing a physical layer connection for communication between the communication system and the user.
  • the electronic switch 401 hits the position of the duplexer 403, and the downlink signal transmission path is unblocked.
  • the data processing and communication control module 303 performs data access processing on the RC data and sends it to the baseband processing module 301.
  • the baseband processing module 301 performs baseband processing to output IQ data.
  • the IQ signal is upconverted and amplified by the downlink radio frequency processing module 302 in the local area.
  • the radio frequency signal is sent to the duplexer 304 for filtering, suppressing the out-of-band signal, and finally transmitting through the antenna through the electronic switch 401.
  • the electronic switch 401 is turned to the position of the duplexer 403, and the uplink signal receiving path is unblocked.
  • the uplink signal received from the antenna 308 passes through the electronic switch 401 and reaches the duplexer 403 for filtering.
  • the filtered uplink RF signal is sent to the uplink RF processing module 305 of the local area for down-conversion processing to obtain IQ data, and then the IQ signal is sent.
  • the baseband processing module 301 processes, and finally the data processing and communication control module 303 exchanges data with the RNC 203 to complete access of the uplink user data.
  • the base station of the local area may also notify the RNC only the neighbor base station information, and the RNC selects a primary scrambling code for the base station to allocate to the base station.
  • the local area base station may first select a primary scrambling code and propose to the RNC. Requesting, in the request, carrying the neighbor base station information at the same time, the RNC directly returns an agreed response if the primary scrambling code selected by the base station is agreed, and if not agreeing, assigning a primary scrambling code to the base station according to the neighbor base station information, in response The assigned primary scrambling code is returned to the base station, and the configuration is completed by the base station.
  • the present invention selects information different from the information of the neighboring base station in an area covered by the existing signal, and can quickly establish a new base station that does not interfere with the neighboring cell and is also less interfered, and reduces the workload of the actual measurement in the later stage.
  • the difficulty of low network optimization shortening the network construction time and improving the quality of the communication network.
  • the base station with adaptive networking function it can quickly and effectively build a low-cost, high-performance network, which can quickly and effectively form network coverage for small home wireless networks, enterprise wireless gateways, and outdoor coverage. Striving for fierce market demand.
  • the manner in which the base station information of the base station is obtained is a convenient and quick way relative to the prior art.
  • the mode selection and filtering module may be implemented in other manners different from that shown in FIG. 4, as shown in FIG.
  • the mode selection and filtering module also includes a duplexer, an electronic switch and a switch controller, but the connection relationship is different, that is, one end of the duplexer is connected to the antenna, and the other end is respectively connected with the common end of the electronic switch and the uplink RF processing module of the area.
  • the two connection ends of the electronic switch are respectively connected to the downlink RF processing module of the area and the RF signal processing module of the adjacent area signal.
  • the switch controller is still connected to the electronic switch.
  • the function is the same as that of Figure 4.
  • the control electronic switch When the working mode is set to the adjacent signal receiving mode, the control electronic switch turns on the duplexer and the adjacent area signal RF processing module (at this time due to the duplexer) The uplink signal of the area can be filtered out, and the neighboring area signal RF processing module only processes the downlink signal of the neighboring area.
  • the attribute parameter configuration is completed and then transferred to the normal mode, the duplexer and the downlink RF processing module of the area are connected. It can be seen that the structure can also implement the adaptive networking of the present invention.
  • the uplink RF processing module 305 and the neighboring cell RF processing module 306 in FIG. 3 can also be physically combined into one module, share the same RF channel, and switch time by using different local oscillators. Therefore, the division of modules in Figure 3 should be understood as logical.
  • the invention can also be applied to other wireless communication systems such as GSM, TD-SCDMA, CDMA2000, Wimax, etc., in the case where the network does not perform static scrambling or frequency planning.
  • GSM Global System for Mobile communications
  • TD-SCDMA, CDMA2000 and other code division systems the primary scrambling code of the neighboring base station can be obtained, and the primary base station with the smallest interference with the neighboring base station is selected.
  • information such as the frequency of the neighboring base station can be obtained, and a different frequency point is allocated to the base station of the local area to perform an adaptive wireless access system networking.
  • the information of the neighboring cell base station obtained by the present invention is not limited to the ones mentioned in the foregoing embodiments, and may be a network node: some parameters that distinguish the cell and the user, such as one of the primary scrambling code, the frequency, and the power. Or any combination, these parameters are generally static planning, and the system and method of the present invention can implement adaptive planning or assist in completing static programming.
  • the invention can also be applied to GSM, TD-SCDMA, CDMA2000, Wimax systems.

Abstract

L'invention concerne une station de base permettant de réaliser un réseau de groupes auto-adaptatifs, un système d'accès sans fil et un procédé de réseau de groupes auto-adaptatifs associé. Le système de l'invention comprend des contrôleurs d'accès sans fil et une station de base interconnectés, la station de base étant utilisée pour communiquer avec des terminaux d'utilisateur du voisinage et pour rapporter les informations de la station de base du voisinage aux contrôleurs d'accès sans fil. L'invention est caractérisée en ce que: la station de base est utilisée pour recevoir les informations de station de base des zones adjacentes, pour coopérer avec le contrôleur d'accès sans fil, pour compléter la sélection et la configuration des paramètres d'attribut du réseau de groupes adaptatifs de la station de base. La station de base doit augmenter le module de choix et de filtrage de mode associé à l'antenne, le module RF de liaison descendante de voisinage et le module RF de liaison montante de voisinage, le module de traitement RF de signal de zones adjacentes situé entre le module de choix et de filtrage de mode et le module de traitement de bande de base, sur la base du module existant. L'invention permet d'avoir un accès rapide et facile à une station de base d'informations de zones adjacentes pour compléter la configuration des paramètres d'attribut du réseau de groupes adaptatifs.
PCT/CN2007/001489 2006-04-30 2007-04-30 Station de base permettant de réaliser un réseau de groupes auto-adaptatifs, système d'accès sans fil et procédé de réseau de groupes auto-adaptatifs associé WO2007128243A1 (fr)

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CNB2006100118456A CN100417255C (zh) 2006-04-30 2006-04-30 一种获取邻区基站信息实现自适应组网的系统

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