WO2007128235A1 - Procede d'auto-configuration de paramètres sans fil et dispositif de système de communication mobile cellulaire - Google Patents

Procede d'auto-configuration de paramètres sans fil et dispositif de système de communication mobile cellulaire Download PDF

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Publication number
WO2007128235A1
WO2007128235A1 PCT/CN2007/001464 CN2007001464W WO2007128235A1 WO 2007128235 A1 WO2007128235 A1 WO 2007128235A1 CN 2007001464 W CN2007001464 W CN 2007001464W WO 2007128235 A1 WO2007128235 A1 WO 2007128235A1
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base station
cell
neighboring
wireless
neighboring cell
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PCT/CN2007/001464
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English (en)
Chinese (zh)
Inventor
Hanping Dan
Junfeng Zhang
Guangqing Xi
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a wireless parameter automatic configuration method and apparatus in the field of cellular mobile communications. Background technique
  • a typical cellular mobile communication system is shown in Figure 1.
  • Involving network wireless parameters, especially the downlink network parameters such as scrambling code, neighboring cell set, and total transmit power are all manually configured by the base station controller (RNC) and notified to the base station cell for execution.
  • RNC base station controller
  • the mobile terminal in the process of communicating with the base station, can switch between cells adjacent to the coverage area to ensure that the communication is not interrupted.
  • the mobile terminal first measures the signal shield of the cell in the neighboring cell, and selects a cell with the best signal quality to establish a new communication connection.
  • the mobile terminal generally obtains a set of neighboring cells that may exist around the network side device (i.e., the base station and the base station controller).
  • the network side generally sets a neighboring set for each cell in a fixed configuration.
  • a neighbor set is generally fixedly configured in a Radio Network Controller (RNC), and the neighboring cell set of the cell is notified to the mobile terminal through a broadcast channel.
  • RNC Radio Network Controller
  • the settings for each cell may be different.
  • the number of base stations is within a manageable range, and since the location of the base station is usually fixed, the neighbor set is generally unchanged once configured. In this case, the maintenance workload of the method of manually configuring the neighbor set is acceptable.
  • a certain number of base stations with large numbers or locations are easily changed, such as communication gateways for home use, indoor coverage base stations using unlicensed band technology (UMA), or mobile emergency communication base stations, etc.
  • UMA unlicensed band technology
  • Manually configuring the neighbor set will result in a dramatic increase in the workload of the installation process, and the turn-on time becomes intolerable.
  • the object of the present invention is to overcome the shortcomings of the configuration and maintenance work in the prior art, and to provide a wireless parameter automatic configuration method and device for a cellular mobile communication system, thereby reducing maintenance work. Amount, and supports the method by which the base station dynamically changes the installation location.
  • the present invention provides a wireless parameter automatic configuration method, including: (1) a base station receives a wireless signal from a neighboring base station;
  • the base station or the network side device determines the neighboring cell set of the base station or the parameter of the base station according to the wireless signal.
  • the base station is provided with a downlink receiving unit, and receives a wireless signal of the neighboring base station through the downlink receiving unit.
  • the determining method of the neighboring cell set in the step (2) is specifically: the base station or the network side selects from all neighboring cells according to all neighboring cell identifiers in the wireless signal and the channel quality of the neighboring cell according to the channel shield selection condition. A part of the cell is used as a neighbor set of the base station.
  • the determining method of the neighboring cell set in the step (2) may also be: the base station or the network side selects all neighboring cells as the neighboring cell set of the base station according to all neighboring cell identifiers in the wireless signal.
  • the parameter of the base station in the step (2) is a cell scrambling code of the base station.
  • the parameter of the base station in the step (2) is the maximum transmit power of the cell of the base station.
  • the parameter of the base station in step (2) is cell frequency configuration information of the base station.
  • the network side device described in step (2) is a core network.
  • the network side device described in step (2) is a radio network controller.
  • the network side device described in step (2) is a wireless gateway.
  • the present invention also provides a base station capable of receiving wireless signals of neighboring base stations, the base station including a base station A downlink receiving unit for receiving wireless signals of neighboring base stations.
  • the wireless signal received by the downlink receiving unit includes:
  • All neighbor cell identities and/or neighbor cell channel quality, and/or neighbor cell frequency configuration information, and/or neighbor cell transmit power, and/or cell scrambling code are all neighbor cell identities and/or neighbor cell channel quality, and/or neighbor cell frequency configuration information, and/or neighbor cell transmit power, and/or cell scrambling code.
  • the downlink receiving unit sends the wireless signal to the network side device for wireless parameter calculation configuration processing:
  • the network side device selects a neighboring cell set of the base station according to all neighbor cell identifiers and neighbor cell channel shields in the radio signal according to channel quality selection conditions, or according to all neighbor cells in the radio signal. Identifying, selecting all neighboring cells as a neighboring cell set of the base station;
  • the network side device calculates a small area scrambling code of the base station according to the neighboring cell scrambling code and the adjacent cell channel quality;
  • the network side device calculates the path loss of the neighboring cell set to the local cell according to the channel quality of the neighboring cell and the transmit power of the neighboring cell, and calculates the maximum transmit power of the cell according to the power upper limit of the interference signal of the neighboring cell set.
  • the network side device calculates a frequency configuration parameter of the local cell according to the neighbor cell frequency configuration information.
  • the present invention also provides a base station for implementing automatic configuration of wireless parameters, the base station comprising a downlink receiving unit for receiving wireless signals of neighboring base stations, and a control unit for controlling wireless parameter configuration.
  • the downlink receiving unit receives the wireless signal of the neighboring base station, and sends the wireless signal to the control unit, and the control unit determines the neighboring cell set of the base station or the parameter of the local base station according to the wireless signal.
  • the control unit selects a neighboring cell set of the base station from all neighboring cells according to channel element quality selection conditions according to all neighbor cell identifiers and neighbor cell channel quantities in the radio signal, or according to all neighbor cell identifiers in the radio signal , select all neighboring cells as the neighboring cell set of the base station.
  • the base station parameters determined by the control unit according to the radio signal are a cell scrambling code, and/or a cell maximum transmit power, and/or a cell frequency configuration information.
  • the control unit calculates a cell of the base station according to the neighbor cell scrambling code and the adjacent cell channel quality Scrambling code.
  • the control unit calculates the path loss of the neighboring cell set to the local cell according to the channel quality of the neighboring cell and the transmit power of the neighboring cell, and calculates the maximum transmit power of the cell according to the power upper limit of the interference signal of the neighboring cell set.
  • the control unit calculates a frequency configuration parameter of the local cell according to the neighbor cell frequency configuration information.
  • the present invention provides a wireless parameter automatic configuration method for a cellular mobile communication system.
  • a downlink receiving unit is added to the base station side, so that the base station can receive the wireless signal of the neighboring base station and is determined by the base station or the network side device.
  • the wireless signal determines the neighboring cell set of the base station or the wireless parameters of the base station, which reduces the maintenance workload.
  • FIG. 1 is a network architecture diagram of a typical cellular mobile communication system
  • FIG. 3 is a network diagram of another typical cellular mobile communication system
  • FIG. 4 is a network diagram of another typical cellular mobile communication system
  • FIG. 5 is a schematic structural diagram of a base station capable of receiving wireless signals of neighboring base stations
  • FIG. 6 is a schematic structural diagram of a base station capable of automatically configuring wireless parameters.
  • the flow of the present invention is:
  • the base station is provided with a downlink receiving unit, and receives a wireless signal of the neighboring base station through the downlink receiving unit; in the prior art, only the terminal has a downlink receiving unit.
  • the base station or the network side device determines the neighboring cell set of the base station or the parameter of the base station according to the wireless signal.
  • step (2) the base station or the network side according to the neighboring cell identifier in the wireless signal, All neighboring cells are used as the neighboring cell set of the base station; the base station or the network side may also select all neighboring cell identifiers and neighboring cell channel qualities in the wireless signal, and select the neighboring cells according to the channel shield selection condition.
  • the set of neighbors of the base station may also select all neighboring cell identifiers and neighboring cell channel qualities in the wireless signal, and select the neighboring cells according to the channel shield selection condition.
  • the method of determining the wireless parameter is determined according to the type of the parameter.
  • the system composition in the first preferred embodiment of the present invention is as shown in FIG. 1, and includes a core network (CN), a radio network controller (RNC), a base station NodeB1, a NodeB2, and a NodeBn.
  • the base station (NodeB) includes a regular NodeB to provide a macro cell for wide coverage and a home NodeB (HNodeB for short) to supplement the home indoor coverage. Both conventional NodeB and HNodeB devices can employ the method of the present invention to automatically configure wireless parameters.
  • the receiving the neighboring cell signal in the local cell may be measuring and demodulating the neighboring cell signal, and obtaining related small cell wireless information, and the processing of receiving the signal is not limited to the implementation means mentioned above;
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell identity.
  • Step 2 The NodeB reports all neighbor cell identifiers to the Radio Network Controller (RNC).
  • Step 3 After receiving the identifiers of all neighboring cells reported by the NodeB, the RNC defines all neighboring cell identifiers as the neighboring cell set of the cell.
  • RNC Radio Network Controller
  • the neighbor set can also be automatically calculated like this:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell identifier and the neighbor cell channel shield.
  • Step 2 The NodeB reports all neighbor cell identifiers and neighbor cell quality to the Radio Network Controller (RNC).
  • RNC Radio Network Controller
  • Step 3 After receiving the neighbor cell identifier and the channel quality of the neighboring cell reported by the NodeB, the RNC selects the conditional partial neighbor cell identifier from which the better channel quality is selected according to the channel quality selection condition.
  • the selection condition may be that the channel quality exceeds a certain threshold.
  • the system in the second preferred embodiment of the present invention is as shown in FIG. 3, and includes a core network (CN), Base station NodeB 1, NodeB2 NodeBn.
  • CN core network
  • Base station NodeB 1 NodeB2 NodeBn.
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell identity.
  • Step 2 The NodeB defines all neighbor cell identifiers as the neighbor set of the cell.
  • the neighbor set can also be automatically calculated like this:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell identifier and the adjacent cell channel quality.
  • Step 2 The NodeB selects a part of the neighbor cell identifier with good channel quality that meets the channel quality selection condition as the neighbor set of the cell.
  • the selection condition may be that the channel quality exceeds a certain threshold.
  • the neighbor set can also be automatically calculated like this:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell identity.
  • Step 2 The NodeB reports all neighbor cell IDs to the core network (CN).
  • Step 3 After receiving the identifiers of all neighboring cells reported by the NodeB, the CN defines all neighboring cell identifiers as the neighboring cell set of the cell.
  • the neighbor set can also be automatically calculated like this:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell identifier and the adjacent cell channel quality.
  • Step 2 NodeB reports all neighbor cell identifiers and neighbor cell channel quality to the core network (CN)
  • Step 3 After receiving the neighbor cell identifier and the channel quality of the neighboring cell reported by the NodeB, the core network (CN) selects the neighbor cell identifier from which the better channel quality is selected according to the channel quality selection condition.
  • the selection condition may be that the channel quality exceeds a certain threshold.
  • the system in the second preferred embodiment of the present invention is as shown in FIG. 4, and includes a core network (CN), a wireless gateway (GW), a base station NodeB1, and a NodeB2 NodeBn.
  • the neighbor set can be automatically calculated like this:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell identity.
  • Step 2 The NodeB reports all neighbor cell identifiers to the wireless gateway (GW).
  • GW wireless gateway
  • Step 3 After receiving the neighbor cell identifiers reported by the NodeB, the GW defines all neighbor cell identifiers as the neighbor cell set of the cell.
  • the neighbor set can also be automatically calculated like this:
  • Step 1 The NodeB first receives the neighbor small signal to obtain the neighbor cell identity and the adjacent cell channel quality.
  • Step Two NodeB all neighbor cells and neighbor cell identification channel quality report to the wireless gateway (GW) 0
  • Step 3 After receiving the neighbor cell identifier and the adjacent cell channel quality reported by the NodeB, the wireless gateway (GW) selects the partial neighbor cell identifier from which the better channel quality is selected according to the channel quality selection condition.
  • the selection condition may be that the channel quality exceeds a certain threshold.
  • the wireless information of the neighboring cell is not limited to the neighbor cell identifier or the adjacent cell channel quality in the embodiment, and the method for calculating the neighboring cell set is not limited to all. Define and define methods according to the channel quality section.
  • the scheme of the present invention can not only automatically calculate the neighboring cell set, but also automatically calculate the cell scrambling code configuration, the cell transmission maximum power configuration, and the frequency configuration.
  • the network structure of Fig. 3 will be taken as an example to give corresponding embodiments.
  • the cell scrambling code can be automatically calculated in this way:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell scrambling code and the neighbor cell channel quality.
  • Step 2 The NodeB uses the prior art according to the information of the neighboring cell scrambling code and the channel quality of the neighboring cell. Calculate the local scrambling code.
  • the prior art described in the second step can utilize the commonly used scrambling code planning method.
  • WCDMA system Taking the WCDMA system as an example, there are two methods as follows:
  • Scrambling code planning based on scrambling code groups or based on all different scrambling codes.
  • the plan based on all the different scrambling codes is to allocate 512 PSCs to the respective cells as long as the multiplexing distance is satisfied.
  • the plan based on the scrambling code group is to assign a different scrambling code group to each base station, and different sectors in each base station are selected and allocated among the 8 different scrambling codes of the scrambling code group.
  • the multiplexing distance of the scrambling code group is mainly achieved by calculating the carrier-to-interference ratio (C/I) of the signal.
  • the cell or the base station can determine the multiplexing distance by measuring the carrier-to-interference ratio (C/I) of the neighboring zone set signal, thereby calculating a scrambling code suitable for the local cell to avoid 4 sigma interference.
  • the maximum transmit power of the cell can be automatically calculated as follows:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain information such as the channel quality and the transmit power of the neighboring cell.
  • Step 2 The NodeB calculates the path loss of the neighboring cell set to the local cell according to the channel quality and the transmit power of the neighboring cell. Since the path loss is reversible, the cell can be calculated according to the power upper limit of the interference signal of the neighboring cell set. Maximum transmit power to reduce interference to neighboring cells.
  • the maximum received power of the neighboring cell is selected for judging.
  • the interference signal power is a power threshold, which means that the power of the cell that has passed the automatically configured power to reach the neighboring set cannot exceed this power after the path loss.
  • the cell frequency configuration parameters can be automatically calculated in this way:
  • Step 1 The NodeB first receives the neighbor cell signal to obtain the neighbor cell frequency configuration information.
  • Step 2 The NodeB calculates the frequency configuration parameters of the cell according to the frequency configuration information of the neighboring cell, so as to avoid mutual interference of frequencies and improve spectrum utilization.
  • the spectrum calculation in the second step can use the frequency hole (that is, the unused frequency) configured by the adjacent set frequency.
  • Each of the above embodiments is an application in a WCDMA system.
  • the cellular mobile communication system such as GSM, CDMA, Wimax, and the WCDMA evolved system such as LTE, 4G, etc.
  • the same method as described above can be employed.
  • the NodeB common receiving module is only used to receive and process the uplink signal, but cannot receive the downlink signal, because the uplink and downlink frequencies are different and are separated from each other.
  • the NodeB usually needs to configure two sets of receivers to operate on the upper and lower frequencies respectively.
  • the cell receiving module needs to receive the downlink signal and complete the functions of cell search, demodulation of the broadcast channel, and measurement, which are usually completed by the terminal; in the process of receiving the downlink signal, the downlink transmission signal of the cell must be short. Interrupted to avoid interference. After the automatic calculation of the wireless parameters is completed, the NodeB system can no longer receive the downlink frequency signal.
  • the cell search module in the first step does not need to increase the configuration of the downlink radio frequency channel.
  • the implementation steps are the same.
  • the scenario described in this example can also be applied directly or indirectly to small communication devices and mobile emergency communication base stations for home and small offices using unlicensed band technology (UMA).
  • UMA unlicensed band technology
  • the present invention also provides a base station capable of receiving wireless signals of neighboring base stations, the base station including a downlink receiving unit for receiving wireless signals of neighboring base stations.
  • the wireless signal received by the downlink receiving unit includes:
  • All neighbor cell identities and/or neighbor cell channel shields, and/or neighbor cell frequency configuration information, and/or neighbor cell transmit power, and/or cell scrambling code are all neighbor cell identities and/or neighbor cell channel shields, and/or neighbor cell frequency configuration information, and/or neighbor cell transmit power, and/or cell scrambling code.
  • the downlink receiving unit processes the received wireless signal and sends it to the network side device for wireless parameter calculation configuration processing, as follows:
  • the network side device selects a neighboring cell set of the neighboring cell from all neighboring cells according to the channel quality selection condition according to all neighbor cell identifiers and neighbor cell channel qualities in the processed wireless signal, or according to all the wireless signals. Neighboring cell identifier, selecting all neighboring cells as the neighboring cell set of the base station;
  • the network side device calculates a small area scrambling code of the base station according to the neighboring cell scrambling code and the adjacent cell channel quality;
  • the network side device calculates the path loss of the neighboring cell set to the local cell according to the channel quality of the neighboring cell and the transmit power of the neighboring cell, and calculates the maximum transmit power of the cell according to the power upper limit of the interference signal of the neighboring cell set.
  • the network side device calculates a frequency configuration parameter of the local cell according to the neighbor cell frequency configuration information.
  • the usual functions of the base station are implemented by other functional modules existing in the base station.
  • the network side device may be a gateway, or a radio network controller, or a core network.
  • the present invention further provides a base station capable of automatically configuring wireless parameters, the base station includes a downlink receiving unit for receiving wireless signals of neighboring base stations, and a control unit for controlling wireless parameter configuration, and Other functional units that implement other existing functions of the base station.
  • the downlink receiving unit receives the wireless signal of the neighboring base station, and sends the wireless signal to the control unit, and the control unit determines the neighboring cell set of the base station or the parameter of the local base station according to the wireless signal.
  • the control unit selects all neighbor cell identifiers and neighbor cell channel shields in the processed wireless signal, and selects a neighboring cell set of the base station from all neighboring cells according to channel quality selection conditions, or according to a wireless signal All neighboring cell identifiers are selected, and all neighboring cells are selected as the neighboring cell set of the base station.
  • the base station parameters determined by the control unit according to the radio signal are a cell scrambling code, and/or a cell maximum transmit power, and/or a cell frequency configuration information.
  • the control unit calculates a cell scrambling code of the base station according to the neighbor cell scrambling code and the neighbor cell channel quality.
  • the control unit calculates the path loss of the neighboring cell set to the local cell according to the channel quality of the neighboring cell and the transmit power of the neighboring cell, and calculates the maximum transmit power of the cell according to the power upper limit of the interference signal of the neighboring cell set.
  • the control unit calculates a frequency configuration parameter of the local cell according to the neighbor cell frequency configuration information.
  • the control unit may also report the neighboring cell set, the maximum transmit power of the cell, the frequency information of the cell, and the scrambling code information to the network side device (for example, a gateway, a radio network controller, a core network), and may also downlink
  • the wireless signal received by the receiving unit is reported to the network side device, and the network side device calculates the wireless configuration parameter of the base station according to the wireless signal, and then sends the wireless configuration parameter to the base station.
  • the neighboring cell signal is received by the base station cell device, and the wireless parameters such as the neighboring area set, the scrambling code, the maximum transmitting power or the frequency are calculated, and the automatic configuration of the wireless parameters is completed, thereby ensuring that the base station is configured more and the base station is located. Automatic configuration is possible with flexible changes, etc. This process is simple and highly reliable. It is especially suitable for a large number of base stations, home nodes or mobile emergency communication base stations.
  • the invention provides a wireless parameter automatic configuration method and device for a cellular mobile communication system, which receives a neighboring cell signal by a base station cell device, and calculates a wireless parameter such as a neighboring zone set, a scrambling code, a maximum transmitting power or a frequency, and completes the wireless parameter.
  • Automatic configuration Automatic configuration process, with high reliability, especially suitable for a large number of base stations, home nodes or mobile emergency communication base stations, suitable for WCDMA, GSM, CDMA, Wimax and other cellular mobile communication systems, and after WCDMA evolution Systems such as LTE, 4G, etc.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention concerne un procédé d'auto-configuration de paramètres sans fil et un dispositif de système de communication mobile cellulaire comprenant (1) une station de base recevant un signal sans fil provenant d'une station de base voisine grâce à une unité de réception de flux descendant. Dans l'invention, (2) la station de base ou un dispositif situé du coté réseau détermine un ensemble de zones contiguës de la station de base ou un paramètre de la station de base selon le signal sans fil. Le procédé et le dispositif de l'invention peuvent être appliqués au système de communication mobile cellulaire de l'invention, notamment un système GSM, CDMA et Wimax, et au système, après son évolution WCDMA, notamment LTE et 4G. Il est possible que la station de base reçoive le signal sans fil provenant de la station de base voisine et que la station de base ou que le dispositif situé du coté réseau détermine l'ensemble de zones contiguës de la station de base ou le paramètre de la station de base selon le signal sans fil, de sorte à réduire la charge de l'opération de maintenance.
PCT/CN2007/001464 2006-04-29 2007-04-29 Procede d'auto-configuration de paramètres sans fil et dispositif de système de communication mobile cellulaire Ceased WO2007128235A1 (fr)

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CN2006100789910A CN101064860B (zh) 2006-04-29 2006-04-29 蜂窝移动通信系统无线参数自动配置方法
CN200610078991.0 2006-04-29

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EP3537751A4 (fr) * 2016-11-28 2019-11-20 Huawei Technologies Co., Ltd. Procédé et dispositif de configuration automatique et station de base
CN109906628B (zh) * 2016-11-28 2020-12-15 华为技术有限公司 自动配置的方法、装置和基站
US11201786B2 (en) 2016-11-28 2021-12-14 Huawei Technologies Co., Ltd. Auto-configuration method and apparatus, and base station

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