CN101663831B - Mobile communication system, base station device and control method thereof - Google Patents

Mobile communication system, base station device and control method thereof Download PDF

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CN101663831B
CN101663831B CN2008800124581A CN200880012458A CN101663831B CN 101663831 B CN101663831 B CN 101663831B CN 2008800124581 A CN2008800124581 A CN 2008800124581A CN 200880012458 A CN200880012458 A CN 200880012458A CN 101663831 B CN101663831 B CN 101663831B
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interference
channel information
base station
interference channel
station apparatus
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CN101663831A (en
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玉手秀一
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Kyocera Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7097Interference-related aspects

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

Abstract

A base station (12) includes: an interference signal detection unit (34) for detecting an interference signal which interferers a channel used for communication with a terminal station according to a reception signal; an interference channel information generation unit (36) for generating interference channel information which indicates a channel of the interference signal; and an interference channel information transmission control unit (38) for successively transmitting interference channel information to a base station (12) in the proximity until power of the interference signal detected by the interference signal detection unit (34) is reduced. Furthermore, the base station (12) includes: an interference channel information acquisition unit (40) which acquires interference channel information and judges whether the interference channel information is destined to the local station; a use channel judgment unit (42) which judges whether a channel indicated by the interference channel information destined to the local station is being used; a channel allocation unit (44) which modifies channel allocation.

Description

移动通信系统、基站装置及其控制方法Mobile communication system, base station device and control method thereof

技术领域 technical field

本发明涉及一种移动通信系统、基站装置及其控制方法,尤其涉及一种降低来自与邻近的基站(以下称为“邻近基站”)进行通信的终端站的电波干扰的技术。The present invention relates to a mobile communication system, a base station device, and a control method thereof, and in particular to a technique for reducing radio wave interference from a terminal station communicating with an adjacent base station (hereinafter referred to as "adjacent base station").

背景技术 Background technique

在使用了小区方式的移动终端系统中,通过设置多个将电波的到达范围限制在一定范围内的基站,能够在基站之间反复使用同一频率。因此,各基站有时受到与其邻近基站进行通信的终端站的电波干扰。In a mobile terminal system using a cell system, by installing a plurality of base stations that limit the reach of radio waves to a certain range, the same frequency can be repeatedly used between base stations. Therefore, each base station sometimes receives radio wave interference from terminal stations communicating with its neighboring base stations.

具体来讲,在图8所示的移动通信系统70中,当与相邻于基站72-1的基站(以下称为“相邻基站”)72-2进行通信的终端站74-6移动到两基站的小区76-1和76-2重叠的区域中时,从终端站74-6发送的电波不仅到达基站72-2,有时也到达基站72-1。这里,如果移动通信系统70采用OFDMA(Orthogonal Frequency Division Multiple Access,正交频分多址)方式,则基站72-1的接收信号谱例如如图9所示。如该图所示,从与基站72-1未取得载波同步的终端站74-6发送的电波,破坏了来自与基站72-1通信的终端站74-1~74-5的接收波中的各副载波的正交性。这样,基站72-1不能通过快速傅里叶变换(Fast Fourier Transform,FFT)准确地解调来自基站74-1~74-5的接收信号。图10是表示该情况下的基站72-1的解调星座的图。如该图所示,由于来自终端站74-6的干扰妨害,EVM(Error VectorMagnitude,误差向量幅度)为终端站74-3<终端站74-4<终端站74-1<终端站 Specifically, in the mobile communication system 70 shown in FIG. In the area where the cells 76-1 and 76-2 of the two base stations overlap, radio waves transmitted from the terminal station 74-6 may reach not only the base station 72-2 but also the base station 72-1. Here, if the mobile communication system 70 adopts OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access), the received signal spectrum of the base station 72-1 is as shown in FIG. 9, for example. As shown in the figure, the radio wave transmitted from the terminal station 74-6 which is not carrier-synchronized with the base station 72-1 destroys the radio waves among the received waves from the terminal stations 74-1 to 74-5 communicating with the base station 72-1. Orthogonality of each subcarrier. In this way, the base station 72-1 cannot accurately demodulate the received signals from the base stations 74-1 to 74-5 through Fast Fourier Transform (FFT). FIG. 10 is a diagram showing the demodulation constellation of the base station 72-1 in this case. As shown in the figure, due to the interference from the terminal station 74-6, EVM (Error Vector Magnitude, error vector magnitude) is terminal station 74-3<terminal station 74-4<terminal station 74-1<terminal station

作为对该电波干扰的对应技术,例如专利文件1中公开了如下的无线通信系统,即:根据传播状态和通信环境,以时隙为单位分开使用用于实现高速传送的OFDM和对干扰信号的抗扰性高的MC-CDMA,从而实现通信容量的改善。As a countermeasure to this radio wave interference, for example, Patent Document 1 discloses a wireless communication system that separately uses OFDM for realizing high-speed transmission and detection of interference signals in units of time slots according to the propagation state and communication environment. MC-CDMA with high immunity to interference, thus realizing the improvement of communication capacity.

【专利文件1】日本特开2004-158901号公报[Patent Document 1] Japanese Patent Laid-Open No. 2004-158901

然而,在上述专利文件1所记载的技术及其他技术(例如,自适应天线阵技术)中,即使能够通过回避电波干扰来防止通信质量的劣化,也无法抑制电波干扰产生本身。However, in the technology described in Patent Document 1 and other technologies (for example, adaptive antenna array technology), even if degradation of communication quality can be prevented by avoiding radio wave interference, generation of radio wave interference itself cannot be suppressed.

发明内容 Contents of the invention

本发明是鉴于上述以往的课题而作出的,其目的在于提供一种能够降低来自与邻近基站进行通信的终端站的电波干扰的移动通信系统、基站装置及其控制方法。The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a mobile communication system, a base station apparatus, and a control method thereof capable of reducing radio wave interference from a terminal station communicating with an adjacent base station.

为了解决上述课题,本发明涉及一种移动通信系统,其包含多个与自小区内的终端站装置进行通信的基站装置,所述移动通信系统的特征在于,所述各基站装置包含:干扰信号检测单元,其根据接收信号来检测出对与所述终端站装置进行通信时使用的信道产生干扰的干扰信号;以及干扰信道信息发送单元,其将表示所述干扰信号检测单元检测出的干扰信号的信道的干扰信道信息依次发送给邻近的基站装置(邻近基站装置),直到该干扰信号的功率降低为止,接收到以本站为目的地的所述干扰信道信息的基站装置在使用该干扰信道信息所表示的信道的情况下,变更该信道的分配。In order to solve the above-mentioned problems, the present invention relates to a mobile communication system including a plurality of base station devices communicating with terminal station devices in its own cell, wherein the mobile communication system is characterized in that each of the base station devices includes an interference signal a detection unit that detects an interference signal that interferes with a channel used for communication with the terminal station apparatus from a received signal; and an interference channel information transmission unit that indicates the interference signal detected by the interference signal detection unit The interference channel information of the channel is transmitted to adjacent base station apparatuses (neighboring base station apparatuses) in sequence until the power of the interference signal decreases, and the base station apparatus that receives the interference channel information destined for the own station is using the interference channel In the case of the channel indicated by the information, the assignment of the channel is changed.

根据本发明,基站装置根据接收信号来检测对通信所使用的信道产生干扰的干扰信号。并且,经由有线线路或无线线路将表示该干扰信号的信道的干扰信道信息依次通知给邻近基站装置,直到所检测的干扰信号的功率降低为止。另一方面,接收到干扰信道信息的基站装置在所接收的干扰信道信息以自站为目的地、并且正在使用该干扰信道信息所表示的信道的情况下,变更该信道的分配。因此,基站装置不确定干扰波的到来方向就能够降低来自与邻近基站装置通信的终端站装置的电波干扰。According to the present invention, the base station apparatus detects an interference signal that interferes with a channel used for communication from a received signal. Then, the interference channel information indicating the channel of the interference signal is sequentially notified to adjacent base station apparatuses through a wired line or a wireless line until the power of the detected interference signal decreases. On the other hand, the base station apparatus that has received the interference channel information changes the allocation of the channel when the received interference channel information is intended for its own station and the channel indicated by the interference channel information is being used. Therefore, the base station apparatus can reduce the radio wave interference from the terminal station apparatus communicating with the adjacent base station apparatus without determining the direction of arrival of the interfering wave.

并且,在本发明的一个实施方式中,所述干扰信道信息发送单元采用用于识别作为发送目的地的基站装置的规定定时,来发送所述干扰信道信息,接收到所述干扰信道信息的基站装置根据该干扰信道信息的接收定时来识别该干扰信道信息是否以本站为目的地。根据该方式,只有与干扰信道信息的发送定时对应的基站装置变更该干扰信道信息所表示的信道的分配。因此,基站装置在防止因邻近基站装置而使信道变更次数增加的同时,能够降低来自与邻近基站装置通信的终端站装置的电波干扰。Furthermore, in one embodiment of the present invention, the interference channel information transmission unit transmits the interference channel information at a predetermined timing for identifying a base station apparatus as a transmission destination, and the base station receiving the interference channel information The device recognizes whether or not the interference channel information is destined for its own station based on the reception timing of the interference channel information. According to this aspect, only the base station apparatus corresponding to the transmission timing of the interference channel information changes the allocation of the channel indicated by the interference channel information. Therefore, the base station apparatus can reduce radio wave interference from terminal station apparatuses communicating with the adjacent base station apparatus while preventing the number of channel changes from increasing due to the proximity of the base station apparatus.

在该方式中,所述各基站装置通过时分双工方式与所述终端站装置进行通信,所述规定定时可以是基于时分双工的规定接收帧。这样,基站装置不需要设计用于接收干扰信道信息的特殊电路。In this method, each of the base station devices communicates with the terminal station device by a time division duplex method, and the predetermined timing may be a predetermined reception frame based on time division duplex. In this way, the base station device does not need to design a special circuit for receiving interference channel information.

并且,在本发明的一个方式中,所述干扰信道信息发送单元发送所述干扰信道信息,所述干扰信道信息包含用于识别作为发送目的地的基站装置的基站识别信息,接收到所述干扰信道信息的基站装置根据该干扰信道信息所包含的基站识别信息来识别该干扰信道信息是否以本站为目的地。Furthermore, in one aspect of the present invention, the interference channel information transmission unit transmits the interference channel information including base station identification information for identifying a base station device as a transmission destination, and receives the interference channel information. The base station apparatus of the channel information identifies whether or not the interference channel information is destined for the own station based on the base station identification information included in the interference channel information.

在该方式中,所述各基站装置还包含干扰降低实绩信息存储单元,该干扰降低实绩信息存储单元按照每个所述邻近的基站装置来存储干扰降低实绩信息,该干扰降低实绩信息表示紧接着向该基站装置发送了所述干扰信道信息之后与该干扰信道信息所表示的信道相关的干扰信号的功率降低的次数,所述干扰信道信息发送单元可以根据存储在所述干扰降低实绩信息存储单元中的干扰降低实绩信息来决定向作为所述干扰信道信息的发送目的地的基站装置的发送顺序。这样,基站装置能够优先向其小区内的终端站装置容易成为干扰源的邻近基站装置发送干扰信道信息。因此,在防止因邻近基站装置而使信道变更次数增加的同时,能够降低来自与邻近基站装置通信的终端站装置的电波干扰。In this aspect, each of the base station devices further includes an interference reduction performance information storage unit that stores interference reduction performance information for each of the adjacent base station devices, and the interference reduction performance information indicates the next After the interference channel information is sent to the base station device, the number of times the power of the interference signal related to the channel indicated by the interference channel information is reduced, the interference channel information sending unit may be stored in the interference reduction performance information storage unit The order of transmission to the base station apparatus that is the transmission destination of the interference channel information is determined based on the interference reduction performance information in the channel. In this way, the base station apparatus can preferentially transmit interference channel information to adjacent base station apparatuses whose terminal station apparatuses in the cell are likely to become interference sources. Therefore, it is possible to reduce radio wave interference from a terminal station apparatus communicating with an adjacent base station apparatus while preventing an increase in the number of channel changes due to the adjacent base station apparatus.

并且,在本发明的一个方式中,所述各基站装置通过正交频分多址方式和时分复用双工方式与所述终端站装置进行无线通信,与所述终端站装置通信时使用的信道是由基于正交频分的副载波频率和基于时分复用的时隙来确定的信道。根据该方式,在采用正交频分多址方式和时分复用双工方式的移动通信系统中,基站装置不确定干扰波的到来方向就能够降低来自与邻近基站装置通信的终端站装置的电波干扰。Furthermore, in one aspect of the present invention, each of the base station apparatuses wirelessly communicates with the terminal station apparatus by an orthogonal frequency division multiple access method and a time division multiplexing duplex method, and the base station apparatus used for communicating with the terminal station apparatus The channel is determined by a subcarrier frequency based on orthogonal frequency division and a time slot based on time division multiplexing. According to this method, in the mobile communication system employing the OFDMA method and the TDM method, the base station device can reduce the radio wave from the terminal station device communicating with the adjacent base station device without determining the direction of arrival of the interference wave. interference.

另外,本发明涉及一种基站装置,其与自小区内的终端站装置进行通信,其特征在于,所述基站装置包含:干扰信号检测单元,其根据接收信号来检测出对与所述终端站装置进行通信时使用的信道产生干扰的干扰信号;以及干扰信道信息发送单元,其将表示所述干扰信号检测单元检测出的干扰信号的信道的干扰信道信息依次发送给邻近的基站装置,直到该干扰信号的功率降低为止。In addition, the present invention relates to a base station device that communicates with a terminal station device in its own cell, and is characterized in that the base station device includes: an interference signal detection unit that detects an interference signal that interferes with the terminal station device based on a received signal. An interference signal that interferes with the channel used by the device for communication; and an interference channel information sending unit that sequentially transmits interference channel information representing a channel of the interference signal detected by the interference signal detection unit to adjacent base station devices until the until the power of the interfering signal decreases.

并且,本发明涉及一种基站装置,其与自小区内的终端站装置进行通信,其特征在于,所述基站装置包含:干扰信道信息接收单元,其从其他基站装置接收干扰信道信息,该干扰信道信息表示对该其他基站装置的通信产生干扰的干扰信号的信道;以及信道分配单元,其在所述干扰信道信息接收单元所接收的干扰信道信息是以本站为目的地、并且正在使用该干扰信道信息所表示的信道的情况下,变更该信道的分配。Furthermore, the present invention relates to a base station device that communicates with a terminal station device in its own cell, wherein the base station device includes: an interference channel information receiving unit that receives interference channel information from other base station devices, the interference channel information The channel information indicates a channel of an interference signal that interferes with communication of the other base station apparatus; and a channel assignment unit that receives the interference channel information at the interference channel information receiving unit that is destined for its own station and is using the When interfering with the channel indicated by the channel information, the allocation of the channel is changed.

并且,本发明涉及一种基站装置的控制方法,该基站装置与自小区内的终端站装置进行通信,所述控制方法的特征在于,其包含如下步骤:干扰信号检测步骤,根据接收信号来检测出对与所述终端站装置进行通信时使用的信道产生干扰的干扰信号;以及干扰信道信息发送步骤,其将表示所述干扰信号检测步骤中检测出的干扰信号的信道的干扰信道信息依次发送给邻近的基站装置,直到该干扰信号的功率降低为止。Furthermore, the present invention relates to a control method of a base station device that communicates with a terminal station device in its own cell, the control method is characterized in that it includes the following steps: a step of detecting an interference signal based on a received signal generating an interference signal that interferes with a channel used for communication with the terminal station apparatus; and an interference channel information transmitting step of sequentially transmitting interference channel information indicating a channel of the interference signal detected in the interference signal detecting step to adjacent base station devices until the power of the interfering signal decreases.

并且,本发明涉及一种基站装置的控制方法,该基站装置与自小区内的终端站装置进行通信,所述控制方法的特征在于,其包含如下步骤:干扰信道信息接收步骤,从其他基站装置接收干扰信道信息,该干扰信道信息表示对该其他基站装置的通信产生干扰的干扰信号的信道;以及信道分配步骤,当所述干扰信道信息接收步骤中接收到的干扰信道信息是以本站为目的地、并且正在使用该干扰信道信息所表示的信道的情况下,变更该信道的分配。Furthermore, the present invention relates to a control method of a base station device that communicates with a terminal station device in its own cell, the control method is characterized in that it includes the steps of: receiving interference channel information, and receiving information from another base station device receiving interference channel information, the interference channel information indicating the channel of the interference signal that interferes with the communication of the other base station device; and a channel allocation step, when the interference channel information received in the interference channel information receiving step is based on the own station If the destination is not the destination and the channel indicated by the interference channel information is being used, the allocation of the channel is changed.

附图说明Description of drawings

图1是本发明的实施方式所涉及的移动通信系统的整体结构图。FIG. 1 is an overall configuration diagram of a mobile communication system according to an embodiment of the present invention.

图2是表示本发明的实施方式所涉及的信道结构的一例的图。FIG. 2 is a diagram showing an example of a channel configuration according to the embodiment of the present invention.

图3是本发明的实施方式所涉及的基站的方框图。FIG. 3 is a block diagram of a base station according to an embodiment of the present invention.

图4是表示干扰信道信息发送时所使用的帧的分配的帧结构例。FIG. 4 is an example of a frame structure showing allocation of frames used when transmitting interference channel information.

图5是表示基站中的干扰信道信息的发送所涉及的处理的流程图。FIG. 5 is a flowchart showing processing related to transmission of interference channel information in a base station.

图6是表示基站中的干扰信道信息的接收所涉及的处理的流程图。FIG. 6 is a flowchart showing processing related to reception of interference channel information in a base station.

图7是表示存储干扰降低实绩信息的存储部的一例的图。FIG. 7 is a diagram showing an example of a storage unit that stores interference reduction performance information.

图8是移动通信系统的整体结构图。Fig. 8 is an overall configuration diagram of the mobile communication system.

图9是表示电波干扰时的基站中的接收信号谱的一例的图。FIG. 9 is a diagram showing an example of a received signal spectrum in a base station at the time of radio wave interference.

图10是表示电波干扰时的基站中的解调星座的一例的图。FIG. 10 is a diagram showing an example of a demodulation constellation in a base station at the time of radio wave interference.

具体实施方式Detailed ways

以下,根据附图对本发明的一个实施方式进行详细说明。Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

图1是本发明的一个实施方式所涉及的移动通信系统10的整体结构图。如该图所示,移动通信系统10构成为包含多个基站12(这里只图示了基站12-1~12-7)和多个终端站14(省略图示)。终端站14例如是可移动型便携电话机、便携信息终端或者数据通信用卡。FIG. 1 is an overall configuration diagram of a mobile communication system 10 according to an embodiment of the present invention. As shown in the figure, the mobile communication system 10 is configured to include a plurality of base stations 12 (only base stations 12-1 to 12-7 are shown here) and a plurality of terminal stations 14 (not shown). The terminal station 14 is, for example, a portable mobile phone, a portable information terminal, or a data communication credit card.

如图1所示,各基站12被设置为表示通信覆盖区域的小区16的端(小区边缘)与其相邻小区的端重合。例如,基站12-1的小区16-1具有分别与其相邻基站12-2~12-7的小区16-2~16-7重叠的区域。并且,各基站12通过TDD(Time Division Duplex,时分双工)方式与位于自小区内的终端站14进行无线信号的收发,另外,通过OFDMA(Orthogonal FrequencyDivision Multiple Access,正交频分多址)方式和TDMA(Time DivisionMultiple Access,时分多址)方式进行复用通信。As shown in FIG. 1, each base station 12 is arranged so that the end (cell edge) of a cell 16 representing a communication coverage area coincides with the end of its adjacent cell. For example, the cell 16-1 of the base station 12-1 has areas overlapping the cells 16-2 to 16-7 of its adjacent base stations 12-2 to 12-7, respectively. In addition, each base station 12 transmits and receives wireless signals with the terminal station 14 located in its own cell by means of TDD (Time Division Duplex, time division duplex). Multiplex communication with TDMA (Time Division Multiple Access, Time Division Multiple Access).

图2是表示移动通信系统10中的信道结构的一例的图。该图中的RX、TX分别表示基站12的接收帧、发送帧,各帧分别由基于时分复用的多个时隙(这里设为4时隙)构成。并且,按照每个时隙,规定由基于正交频分复用的多个副载波(例如16个副载波)构成的多个子信道(这里设为10个子信道)。并且,各通信所使用的信道由用于识别时隙的时隙号码(Slot1~4)和用于识别子信道频率的子信道号码(f1~f10)的组合来确定。在移动通信系统10中,通过将这样确定的各信道分别用于各个基站12,实现同一频率的再利用。另外,在后面对该图所示的“ICH”进行描述。FIG. 2 is a diagram showing an example of a channel configuration in the mobile communication system 10 . RX and TX in the figure represent a reception frame and a transmission frame of the base station 12, respectively, and each frame is composed of a plurality of time slots (here, 4 time slots) based on time division multiplexing. Also, a plurality of subchannels (here, 10 subchannels) constituted by a plurality of subcarriers (for example, 16 subcarriers) based on OFDM are defined for each slot. Also, the channel used for each communication is specified by a combination of a slot number (Slot1 to 4) for identifying a slot and a subchannel number (f1 to f10) for identifying a subchannel frequency. In the mobile communication system 10, by using each channel determined in this way for each base station 12, reuse of the same frequency is realized. In addition, "ICH" shown in this figure will be described later.

另外,各基站12根据接收信号,检测对与自小区内的终端站14通信时使用的信道产生干扰的干扰信号。并且,将表示该干扰信号的信道的干扰信道信息依次发送给相邻基站12,直到所检测出的干扰信号的功率降低为止。另一方面,从相邻基站12接收到干扰信道信息的基站12在所接收到的干扰信道信息是以本站为目的地,并且正在使用该干扰信道信息所表示的信道的情况下,变更该信道的分配。这样,在移动通信系统10中,检测到干扰信号的基站12不确定干扰波的到来方向就能降低来自与相邻基站12通信的终端站14的电波干扰。Also, each base station 12 detects an interference signal that interferes with a channel used for communication with the terminal station 14 in its own cell, based on the received signal. And, the interference channel information indicating the channel of the interference signal is sequentially transmitted to the adjacent base station 12 until the power of the detected interference signal decreases. On the other hand, when the base station 12 that has received the interference channel information from the neighboring base station 12 is intended for its own station and is using the channel indicated by the interference channel information, it changes the channel. channel allocation. In this way, in the mobile communication system 10, the base station 12 that detected the interference signal can reduce the radio wave interference from the terminal station 14 communicating with the adjacent base station 12 without determining the direction of arrival of the interference wave.

以下,为了实现上述处理,对基站12所具备的结构和功能进行更详细地说明。Hereinafter, the configuration and functions of the base station 12 will be described in more detail in order to realize the above processing.

图3是基站12的方框图。如该图所示,基站12构成为包含天线20、切换部22、接收部24、发送部26、信号处理部28、I/F部30以及控制部32。FIG. 3 is a block diagram of base station 12 . As shown in the figure, the base station 12 is configured to include an antenna 20 , a switching unit 22 , a receiving unit 24 , a transmitting unit 26 , a signal processing unit 28 , an I/F unit 30 , and a control unit 32 .

天线20发射从发送部26提供的无线信号,并且接收从终端站14或相邻基站12发送的无线信号,将所接收的无线信号输出给接收部24。The antenna 20 transmits a wireless signal supplied from the transmitting unit 26 , receives a wireless signal transmitted from the terminal station 14 or the adjacent base station 12 , and outputs the received wireless signal to the receiving unit 24 .

切换部22以时分方式切换天线20的收发。具体来讲,将天线20的连接目的地切换为接收部24或发送部26,使得用上述接收帧(RX)来接收无线信号,用发送帧(TX)来发送无线信号。但是,在用接收帧来发送后述的干扰信道信息的情况下不限于此。The switching unit 22 switches transmission and reception of the antenna 20 in a time-divisional manner. Specifically, the connection destination of the antenna 20 is switched to the receiving unit 24 or the transmitting unit 26 so that the wireless signal is received in the reception frame (RX) and the wireless signal is transmitted in the transmission frame (TX). However, it is not limited to this when transmitting interference channel information described later in a reception frame.

接收部24将天线20所接收的无线信号下变频为基带信号,并输出给信号处理部28。The receiving unit 24 down-converts the wireless signal received by the antenna 20 into a baseband signal, and outputs it to the signal processing unit 28 .

发送部26将从信号处理部28输入的基带信号上变频为无线信号,并放大为发送输出电平,提供给天线20。The transmission unit 26 up-converts the baseband signal input from the signal processing unit 28 into a radio signal, amplifies it to a transmission output level, and supplies it to the antenna 20 .

信号处理部28从由接收部24输入的基带信号中提取终端站14或相邻基站12发送的数据。具体来讲,对由接收部24输入的基带信号进行码元(symbol)同步、保护间隔(Guard Interval)的去除、向数字信号的变换等,并将所取得的数字信号进一步通过高速傅里叶变换(FFT)变换为表示各副载波的相位和振幅的复码元串。并且,通过与调制方式对应的解映射处理,将该复码元串变换为对应的二进制数据,取得从终端站14或相邻基站12发送的数据。这样提取的数据被输出到I/F部30或控制部32中。The signal processing unit 28 extracts data transmitted from the terminal station 14 or the adjacent base station 12 from the baseband signal input from the receiving unit 24 . Specifically, symbol (symbol) synchronization, guard interval (Guard Interval) removal, conversion to digital signals, etc. are performed on the baseband signal input by the receiving unit 24, and the obtained digital signal is further passed through a high-speed Fourier transform. Transformation (FFT) transforms into a complex symbol sequence representing the phase and amplitude of each subcarrier. Then, the complex symbol sequence is converted into corresponding binary data by demapping processing corresponding to the modulation method, and the data transmitted from the terminal station 14 or the adjacent base station 12 is acquired. The data thus extracted is output to the I/F section 30 or the control section 32 .

并且,信号处理部28将由I/F部30或控制部32输入的数据变换为基带信号。具体来讲,通过与调制方式对应的映射处理,将由I/F部30或控制部32输入的二进制数据变换为表示各副载波的相位和振幅的复码元串。并且,通过快速傅里叶逆变换(Inverse Fast Fourier Transform:IFFT)将该复码元串变换为数字信号,进一步进行向模拟信号的变换、保护间隔的附加等,取得基带信号。这样取得的基带信号被提供给发送部26。Furthermore, the signal processing unit 28 converts the data input from the I/F unit 30 or the control unit 32 into a baseband signal. Specifically, the binary data input from the I/F unit 30 or the control unit 32 is converted into a complex symbol sequence indicating the phase and amplitude of each subcarrier by mapping processing corresponding to the modulation method. Then, the complex symbol sequence is converted into a digital signal by Inverse Fast Fourier Transform (IFFT), and then converted to an analog signal, added with a guard interval, etc., to obtain a baseband signal. The baseband signal obtained in this way is supplied to the transmission unit 26 .

I/F部30将由未图示的上位装置输入的数据输出给信号处理部28,并且将由信号处理部28输入的数据输出给上位装置。The I/F unit 30 outputs data input from a high-level device (not shown) to the signal processing unit 28 , and outputs data input from the signal processing unit 28 to the high-level device.

控制部32由CPU和存储器等构成,控制基站12的各部。并且,作为后述的干扰信道信息的发送所涉及的功能结构,具有干扰信号检测部34、干扰信道信息生成部36、干扰信道信息发送控制部38,作为干扰信道信息的接收所涉及的功能结构,具有干扰信道信息取得部40、使用信道判定部42、信道分配部44。这些功能通过CPU执行存储在存储器中的各种控制程序来实现。The control unit 32 is composed of a CPU, a memory, and the like, and controls each unit of the base station 12 . Furthermore, as a functional configuration related to transmission of interference channel information described later, an interference signal detection unit 34, an interference channel information generation unit 36, and an interference channel information transmission control unit 38 are provided, and as a functional configuration related to reception of interference channel information , including an interference channel information acquisition unit 40 , a used channel determination unit 42 , and a channel allocation unit 44 . These functions are realized by the CPU executing various control programs stored in the memory.

干扰信号检测部34根据接收信号(这里是由信号处理部28输入的复码元的各载波分量),按照规定的算法检测对与自小区内的终端站14通信时使用的信道产生干扰的干扰信号。用于检测干扰信号的算法例如可以应用迫零(Zero Forcing)均衡及其他均衡技术。The interference signal detection unit 34 detects interference that interferes with the channel used for communication with the terminal station 14 in its own cell according to a predetermined algorithm based on the received signal (here, each carrier component of the complex symbol input from the signal processing unit 28). Signal. Algorithms for detecting interfering signals may apply, for example, zero-forcing equalization and other equalization techniques.

在干扰信号检测部34检测出干扰信号的情况下,干扰信道信息生成部36生成干扰信道信息,该干扰信道信息包含用于识别该干扰信号的信道的时隙号码和子信道号码。When the interference signal detection unit 34 detects an interference signal, the interference channel information generation unit 36 generates interference channel information including a slot number and a subchannel number for identifying the channel of the interference signal.

干扰信道信息发送控制部38控制信号处理部28,使得干扰信道信息生成部36所生成的干扰信道信息按照分配给本站的帧(定时)依次发送给相邻基站12,直到干扰信号检测部34所检测的干扰信号的功率降低为止。具体来讲,控制信号处理部28,使得按照如下的定时来发送干扰信道信息。The interference channel information transmission control unit 38 controls the signal processing unit 28 so that the interference channel information generated by the interference channel information generation unit 36 is sequentially transmitted to the adjacent base station 12 according to the frame (timing) allocated to the own station until the interference signal detection unit 34 until the power of the detected interfering signal decreases. Specifically, the signal processing unit 28 is controlled so that the interference channel information is transmitted at the following timing.

图4是表示干扰信道信息发送时所使用的帧的分配的帧结构例。这里,在移动通信系统10具有某基站12的周围设置了6个相邻基站12的小区结构的情况下(参照图1),示出了按照如下的方式分配帧的例子,即:互相相邻的7个基站12的各个基站能够按照7帧来发送干扰信道信息(参照图4下段)。即,在基站12-1用帧1发送干扰信道信息、基站12-2用帧2发送干扰信道信息、…、基站12-7用帧7发送干扰信道信息的情况下,根据发送源,预先规定干扰信道信息的发送定时。根据该帧结构,干扰信道信息发送控制部38控制干扰信道信息的发送定时,由此,邻近的基站12不能在同一定时发送干扰信道信息。FIG. 4 is an example of a frame structure showing allocation of frames used when transmitting interference channel information. Here, in the case where the mobile communication system 10 has a cell structure in which six adjacent base stations 12 are installed around a certain base station 12 (see FIG. 1 ), an example in which frames are allocated so that they are adjacent to each other is shown. Each of the seven base stations 12 can transmit interference channel information in seven frames (see the lower part of FIG. 4 ). That is, when base station 12-1 transmits interference channel information in frame 1, base station 12-2 transmits interference channel information in frame 2, ..., base station 12-7 transmits interference channel information in frame 7, depending on the transmission source, predetermined The transmission timing of channel information is disturbed. According to this frame structure, the interference channel information transmission control unit 38 controls the transmission timing of the interference channel information, so that the neighboring base stations 12 cannot transmit the interference channel information at the same timing.

并且,在该图所示的帧结构例中,将上述7帧作为1超级帧,并且将7超级帧作为1超级帧组,根据发送(接收)干扰信道信息的超级帧(定时),能够识别干扰信道信息的发送目的地(参照图4上段)。即,在用超级帧1发送以基站12-1为目的地的干扰信道信息、用超级帧2发送以基站12-2为目的地的干扰信道信息、…、用超级帧7发送以基站12-7为目的地的干扰信道信息的情况下,根据发送目的地,预先规定干扰信道信息的发送定时。根据该超级帧结构,干扰信道信息发送控制部38控制干扰信道信息的发送定时,由此,干扰信道信息不需要包含表示发送目的地的信息,并且以规定间隔(每隔7帧)依次将干扰信道信息发送给相邻基站12。In addition, in the frame structure example shown in this figure, the above-mentioned 7 frames are regarded as 1 superframe, and 7 superframes are regarded as 1 superframe group, and it can be identified from the superframe (timing) of transmitting (receiving) interference channel information The transmission destination of the interference channel information (refer to the upper part of FIG. 4 ). That is, when super frame 1 is used to transmit interference channel information destined for base station 12-1, super frame 2 is used to transmit interference channel information destined for base station 12-2, ..., super frame 7 is used to transmit interference channel information destined for base station 12-1 When 7 is the destination interference channel information, the transmission timing of the interference channel information is predetermined according to the transmission destination. According to this super frame structure, the interference channel information transmission control unit 38 controls the transmission timing of the interference channel information, so that the interference channel information does not need to include information indicating the transmission destination, and the interference channel information is sequentially transmitted at predetermined intervals (every 7 frames). The channel information is sent to neighboring base stations 12 .

另外,干扰信道信息发送控制部38也可以控制信号处理部28和切换部22,使得在分配给本站的帧中,如图2所示,用接收帧的规定接收时隙(这里是标记为ICH的RX的Slot3)来发送干扰信道信息。这样,在某基站12发送干扰信道信息时,由于其相邻基站12都是干扰信道信息的接收模式,所以各基站12不需要设计用于接收干扰信道信息的特殊电路。In addition, the interference channel information transmission control unit 38 can also control the signal processing unit 28 and the switching unit 22, so that in the frame allocated to the own station, as shown in FIG. Slot3) of RX of ICH to send interference channel information. In this way, when a base station 12 transmits interference channel information, each base station 12 does not need to design a special circuit for receiving interference channel information because its adjacent base stations 12 are in the receiving mode of interference channel information.

并且,在图4的帧结构例中,按照每个超级帧来规定干扰信道信息的发送目的地,按照该超级帧内的每个帧来规定干扰信道信息的发送源,反过来,也可以按照每个超级帧来规定干扰信道信息的发送源,按照该超级帧内的每个帧来规定干扰信道信息的发送目的地。In addition, in the frame structure example of FIG. 4 , the transmission destination of the interference channel information is specified for each super frame, and the transmission source of the interference channel information is specified for each frame in the super frame. The transmission source of the interference channel information is specified for each super frame, and the transmission destination of the interference channel information is specified for each frame in the super frame.

干扰信道信息取得部40从信号处理部28中取得由任意一个相邻基站12发送的干扰信道信息及其接收定时,并且根据该接收定时,识别所取得的干扰信道信息是否以本站为目的地。具体来讲,确定该接收定时是属于图4所示的信道结构中的哪个超级帧,在与所确定的超级帧对应的发送目的地与本站一致的情况下,识别该干扰信道信息以本站为目的地。The interference channel information acquiring unit 40 acquires the interference channel information transmitted by any adjacent base station 12 and its receiving timing from the signal processing unit 28, and identifies whether the acquired interference channel information is destined for the own station based on the receiving timing. . Specifically, it is determined which super frame in the channel structure shown in FIG. 4 the receiving timing belongs to. station as the destination.

在干扰信道信息取得部40所取得的干扰信道信息以本站为目的地的情况下,使用信道判定部42判定本站是否使用包含在该干扰信道信息中的时隙号码和子信道号码所确定的信道。When the interference channel information acquired by the interference channel information acquisition unit 40 is destined for the own station, the use channel determination unit 42 determines whether the own station uses the channel specified by the time slot number and the subchannel number included in the interference channel information. channel.

信道分配部44在由使用信道判定部42判定为本站正在使用干扰信道信息表示的信道的情况下,变更该信道的分配。例如,将其他空信道分配给使用干扰信道信息表示的信道的通信、或者将干扰信道信息表示的信道分配给与其他终端站14的通信、或者暂时停止使用干扰信道信息表示的信道。The channel allocation unit 44 changes the allocation of the channel when it is determined by the used channel determination unit 42 that the own station is using the channel indicated by the interference channel information. For example, other vacant channels are allocated to communication using the channel indicated by the interference channel information, or the channel indicated by the interference channel information is allocated to communication with other terminal stations 14, or the channel indicated by the interference channel information is temporarily stopped.

接着,根据图5和图6说明基站12的动作。Next, the operation of the base station 12 will be described with reference to FIGS. 5 and 6 .

图5是表示基站12(这里假设是图1中的基站12-1)中的干扰信道信息的发送所涉及的处理的流程图。本处理按照每个接收帧来启动。FIG. 5 is a flowchart showing processing related to transmission of interference channel information in the base station 12 (here, the base station 12-1 in FIG. 1 is assumed). This process is started for every received frame.

如该图所示,当接收到无线信号时(S100),干扰信号检测部34根据由信号处理部28输入的复码元的各载波分量,检测对与自小区内的终端站14通信时使用的信道产生干扰的干扰信号(S102)。这里,如果完全没有检测到干扰信号,则基站12-1结束本处理。另一方面,如果在S102中检测到干扰信号,则干扰信道信息生成部36生成干扰信道信息,该干扰信道信息包含用于识别该干扰信号的信道的时隙号码和子信道号码(S104)。As shown in the figure, when a wireless signal is received (S100), the interference signal detection unit 34 detects the signal used when communicating with the terminal station 14 in its own cell based on each carrier component of the complex symbol input from the signal processing unit 28. The channel generates an interfering interference signal (S102). Here, if no interference signal is detected at all, the base station 12-1 ends this process. On the other hand, if an interference signal is detected in S102, the interference channel information generator 36 generates interference channel information including a slot number and a subchannel number for identifying the channel of the interference signal (S104).

接着,干扰信道信息发送控制部38将计数器i初始化为1(S106)。然后,控制信号处理部28和切换部22,使得在S104中生成的干扰信道信息发送到6个相邻基站12-2~12-7中第i个相邻基站,并使发送部26发送干扰信道信息(S108)。例如,在第i个相邻基站是基站12-2的情况下,用超级帧2(发送目的地:基站12-2)内的分配给本站的帧1(发送源:基站12-1)中的规定接收时隙来发送干扰信道信息。Next, the interference channel information transmission control unit 38 initializes the counter i to 1 (S106). Then, the signal processing unit 28 and the switching unit 22 are controlled so that the interference channel information generated in S104 is transmitted to the i-th adjacent base station among the six adjacent base stations 12-2 to 12-7, and the transmitting unit 26 is made to transmit the interference channel information Channel information (S108). For example, when the i-th adjacent base station is the base station 12-2, use the frame 1 (transmission source: base station 12-1) allocated to the own station in the super frame 2 (transmission destination: base station 12-2) The specified receiving time slot in the channel is used to transmit the interference channel information.

然后,干扰信号检测部34确认在S102中检测到的干扰信号的功率是否降低(S110)。这里,在检测到确认干扰信号功率降低时,基站12-1结束本处理。另一方面,如果未确认干扰信号功率降低,则干扰信道信息发送控制部38将计数器i加1(S112),反复执行S108及其之后的处理,直到计数器i超过相邻基站数n(这里为6)为止(S114)。即,反复发送在S104中生成的干扰信道信息,直到在S102中检测到的干扰信号的功率降低或者发送到所有相邻基站12-2~12-7中为止。Then, the interference signal detection unit 34 checks whether or not the power of the interference signal detected in S102 has decreased (S110). Here, the base station 12-1 terminates this process when it detects that the confirmation interference signal power has decreased. On the other hand, if it is not confirmed that the interference signal power has decreased, the interference channel information transmission control unit 38 adds 1 to the counter i (S112), and repeatedly executes the processing of S108 and thereafter until the counter i exceeds the number of adjacent base stations n (herein 6) until (S114). That is, the interference channel information generated in S104 is repeatedly transmitted until the power of the interference signal detected in S102 decreases or is transmitted to all adjacent base stations 12-2 to 12-7.

图6是表示基站12(这里设为图1中的基站12-2)中的干扰信道信息的接收所涉及的处理的流程图。本处理按照每个接收帧或者在能够发送以本站为目的地的干扰信道信息的接收帧(这里是超级帧2内的接收帧)中启动。FIG. 6 is a flowchart showing processing related to reception of interference channel information in the base station 12 (here, base station 12-2 in FIG. 1 ). This process is started for each reception frame or in a reception frame (here, a reception frame in super frame 2) in which interference channel information destined for the own station can be transmitted.

如该图所述,如果接收到干扰信道信息(S200),则基站12-2在空信道中实施载波侦听(S202)。接着,干扰信道信息取得部40从信号处理部28中取得由任意一个相邻基站12发送的干扰信道信息及其接收定时,判定该干扰信道信息是否以本站为目的地,即:该接收信道信息的接收定时是否在将本站作为发送目的地的超级帧(这里是超级帧2)内(S204)。这里,如果该接收定时不在本站的超级帧内,则基站12-2判断为在S200中接收的干扰信道信息以其他站为目的地,结束本处理。As described in the figure, if interference channel information is received (S200), the base station 12-2 performs carrier sense in an empty channel (S202). Next, the interference channel information acquisition unit 40 acquires the interference channel information transmitted by any adjacent base station 12 and its receiving timing from the signal processing unit 28, and determines whether the interference channel information is destined for the own station, that is, the receiving channel Whether or not the reception timing of the information falls within the super frame (here, super frame 2) whose own station is the destination (S204). Here, if the reception timing is not within the super frame of the own station, the base station 12-2 judges that the interference channel information received in S200 is destined for another station, and ends this process.

另一方面,如果在S204中判定为干扰信道信息的接收定时在本站的超级帧内,则使用信道判定部42判定本站是否正在使用包含在该干扰信道信息中的时隙号码和子信道号码所确定的信道(S206)。并且,如果未使用该信道,则基站12-2判断为与本站进行通信的终端站14中没有成为干扰源的成分,结束本处理。反过来,如果判定为使用该信道,则基站12-2判断为使用该信道进行通信的终端站14为干扰源,根据S202中的载波侦听结果,向该终端站14分配其他空信道(S208)。On the other hand, if it is determined in S204 that the reception timing of the interference channel information is within the super frame of the own station, the channel used judging unit 42 judges whether the own station is using the slot number and the subchannel number included in the interference channel information. The determined channel (S206). And, if the channel is not used, the base station 12-2 judges that there is no interference source among the terminal stations 14 communicating with the own station, and ends this process. Conversely, if it is determined to use the channel, the base station 12-2 determines that the terminal station 14 using the channel for communication is an interference source, and according to the carrier sense result in S202, allocates other empty channels to the terminal station 14 (S208 ).

根据以上说明的移动通信系统10,检测到干扰信号的基站12不确定干扰波的到来方向就能降低来自与相邻基站12通信的终端站14的电波干扰。According to the mobile communication system 10 described above, the base station 12 that detected the interference signal can reduce the radio wave interference from the terminal station 14 communicating with the adjacent base station 12 without determining the direction of arrival of the interference wave.

另外,本发明不限定于上述实施方式,可以进行各种变形实施。In addition, this invention is not limited to the said embodiment, Various deformation|transformation is possible.

例如,在上述实施方式中,将本发明应用于采用了OFDMA方式和TDMA/TDD方式的移动通信系统,但本发明也可以应用于采用其他多址方式的移动通信系统。For example, in the above-mentioned embodiments, the present invention is applied to mobile communication systems employing OFDMA schemes and TDMA/TDD schemes, but the present invention can also be applied to mobile communication systems employing other multiple access schemes.

并且,在上述实施方式所涉及的移动通信系统10中,接收到干扰信道信息的基站12根据该接收定时,识别该干扰信道信息是否以本站为目的地,但检测到干扰信号的基站12发送包含用于识别发送目的地的基站ID的干扰信道信息,接收到干扰信道信息的基站12也可以通过比较包含在该干扰信道信息中的基站ID和本站的基站ID,识别该干扰信道信息是否以本站为目的地。Furthermore, in the mobile communication system 10 according to the above-mentioned embodiment, the base station 12 that has received the interference channel information recognizes whether the interference channel information is intended for the own station based on the reception timing, but the base station 12 that detects the interference signal transmits Contains interference channel information for identifying the base station ID of the transmission destination, and the base station 12 that receives the interference channel information can also identify whether the interference channel information is Take this site as the destination.

在该情况下,基站12也可以按照每个相邻基站12,将干扰降低实绩信息存储到存储器等存储部(参照图7)中,并根据该信息来决定干扰信道信息的发送目的地,其中,所述干扰降低实绩信息表示紧接着向该相邻基站12发送了干扰信道信息之后,该干扰信道信息所表示的干扰信号的功率降低的实绩次数(次数本身、频度、概率等)。这样,能够优先向其小区内的基站14容易成为干扰源的相邻基站12发送干扰信道信息。In this case, the base station 12 may store the interference reduction performance information in a storage unit such as a memory (see FIG. 7 ) for each adjacent base station 12, and determine the transmission destination of the interference channel information based on this information, wherein The interference reduction performance information indicates the actual number of times (number itself, frequency, probability, etc.) of power reduction of the interference signal indicated by the interference channel information immediately after the interference channel information is transmitted to the adjacent base station 12 . In this way, it is possible to preferentially transmit the interference channel information to the adjacent base station 12 whose base station 14 in the cell is likely to be an interference source.

并且,基站12也可以只具有上述干扰信道信息发送所涉及的结构(干扰信号检测部34、干扰信道信息生成部36、干扰信道信息发送控制部38)和其接收所涉及的结构(干扰信道信息取得部40、使用信道判定部42、信道分配部44)中的任意一种结构。在该情况下,只具有干扰信道信息的发送所涉及的结构的基站12由于不进行与干扰信道信息的接收对应的信道的分配变更,所以与只具有干扰信道信息的接收所涉及的结构的基站12相比,通信优先级相对较高。In addition, the base station 12 may have only the configuration related to the above-mentioned interference channel information transmission (interference signal detection unit 34, interference channel information generation unit 36, interference channel information transmission control unit 38) and the configuration related to its reception (interference channel information Any one of the acquisition unit 40, the channel determination unit 42, and the channel allocation unit 44) is used. In this case, since the base station 12 having only the configuration related to the transmission of the interference channel information does not change the allocation of channels corresponding to the reception of the interference channel information, it is different from the base station 12 having only the configuration related to the reception of the interference channel information. Compared with 12, the communication priority is relatively high.

并且,检测出干扰信号的基站12不仅向其相邻基站12发送干扰信道信息,也向位于其小区内的基站14能够成为干扰源的范围内的邻近基站12发送干扰信道信息(邻近的范围≥相邻的范围)。在该情况下,1超级帧所包含的帧数和1超级帧组所包含的超级帧数大于等于相互邻近的基站数。And, the base station 12 that detects the interference signal not only transmits the interference channel information to its adjacent base station 12, but also sends the interference channel information to the adjacent base stations 12 within the range where the base station 14 in its cell can become an interference source (adjacent range≥ adjacent range). In this case, the number of frames included in one super frame and the number of super frames included in one super frame group are greater than or equal to the number of base stations adjacent to each other.

Claims (8)

1. mobile communication system, it comprises a plurality of base station apparatus that communicate with terminal station device in the residential quarter, and described mobile communication system is characterised in that,
Described each base station apparatus comprises:
The interferer signal detection unit, it detects the channel that uses when communicating with described terminal station device and produces the interference signal of disturbing according to receiving signal; And
The interference channel information transmitting element, its interference channel information that will represent the channel of the interference signal that described interferer signal detection unit inspection goes out sends to contiguous base station apparatus successively, until the reduction of the power of this interference signal,
Receive the base station apparatus of the described interference channel information take our station as the destination in the situation of using the represented channel of this interference channel information, the distribution of changing this channel.
2. mobile communication system according to claim 1 is characterized in that,
Described interference channel information transmitting element employing is used for identification as the regulation timing of the base station apparatus that sends the destination, sends described interference channel information,
Whether the base station apparatus that receives described interference channel information regularly identifies this interference channel information take our station as the destination according to the reception of this interference channel information.
3. mobile communication system according to claim 2 is characterized in that,
Described each base station apparatus communicates by time division duplex and described terminal station device,
Described regulation regularly is based on the regulation received frame of time division duplex.
4. mobile communication system according to claim 1 is characterized in that,
Described interference channel information transmitting element sends described interference channel information, and described interference channel information comprises for the base station identification information of identification as the base station apparatus that sends the destination,
Receive the base station identification information that the base station apparatus of described interference channel information comprises according to this interference channel information and whether identify this interference channel information take our station as the destination.
5. mobile communication system according to claim 4 is characterized in that,
Described each base station apparatus also comprises interference and reduces the actual achievement information memory cell, this interference reduces the actual achievement information memory cell and stores the actual achievement information that reduces of disturbing according to the base station apparatus of each described vicinity, this interference reduces the under powered number of times that and then actual achievement information represent after this base station apparatus has sent described interference channel information the interference signal relevant with the represented channel of this interference channel information
Described interference channel information transmitting element reduces interference in the actual achievement information memory cell and reduces actual achievement information and decide to the sending order as the base station apparatus of the transmission destination of described interference channel information according to being stored in described interference.
6. the described mobile communication system of any one according to claim 1~5 is characterized in that,
Described each base station apparatus carries out radio communication by OFDM mode and time division multiple access way and described terminal station device,
The channel of using when communicating by letter with described terminal station device is by based on the subcarrier frequency of orthogonal frequency and the channel of determining based on time-multiplexed time slot.
7. base station apparatus, it communicates with terminal station device in the residential quarter, it is characterized in that, and described base station apparatus comprises:
The interference channel information receiving element, it receives interference channel information from other base station apparatus, and this interference channel information represents the communication of these other base station apparatus is produced the channel of the interference signal of disturbing; And
Channel-assignment unit, its interference channel information that receives at described interference channel information receiving element is take our station as the destination and is using in the situation of the represented channel of this interference channel information, changes the distribution of this channel.
8. the control method of a base station apparatus, this base station apparatus communicates with terminal station device in the residential quarter, and described control method is characterised in that, and it comprises following steps:
The interference channel information receiving step receives interference channel information from other base station apparatus, and this interference channel information represents the communication of these other base station apparatus is produced the channel of the interference signal of disturbing; And
Channel assignment step, the interference channel information that receives in described interference channel information receiving step is take our station as the destination and is using in the situation of the represented channel of this interference channel information, changes the distribution of this channel.
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