WO2011137856A1 - Power control method, device and system for home base station - Google Patents

Power control method, device and system for home base station Download PDF

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Publication number
WO2011137856A1
WO2011137856A1 PCT/CN2011/075047 CN2011075047W WO2011137856A1 WO 2011137856 A1 WO2011137856 A1 WO 2011137856A1 CN 2011075047 W CN2011075047 W CN 2011075047W WO 2011137856 A1 WO2011137856 A1 WO 2011137856A1
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Prior art keywords
hnb
macro
power
cell
signal
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PCT/CN2011/075047
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French (fr)
Chinese (zh)
Inventor
陈新
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华为技术有限公司
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Publication of WO2011137856A1 publication Critical patent/WO2011137856A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a home base station power control method, apparatus, and system.
  • HNB Home NodeB, Home Base Station
  • ⁇ or HeNB can effectively improve indoor coverage, improve indoor access rate, reduce delay, meet various user application requirements, and reduce the load of macro base stations, so that macro base station capacity mainly serves outdoor or sports. User.
  • the HNB application scenario includes an extended capacity scenario and a supplementary coverage scenario:
  • the extended capacity scenario uses an overlay network, that is, overlays a layer of HNB microcell coverage on the macrocell network coverage.
  • the HNB microcell covers the blind area covered by the macrocell network.
  • the HNB-privileged UE (hereinafter referred to as the unprivileged UE) moves to the HNB micro-cell coverage area, the strong HNB signal will cause strong interference to the UE, and in severe cases, the call will be dropped, resulting in coverage within the macro base station. dead zone".
  • an embodiment of the present invention provides a method, a device, and a system for controlling a home base station power to solve the problem of co-channel interference between an HNB and a macro base station.
  • the technical solution is as follows:
  • the base station power control method is applied to a communication network including a macro, a cell, and a micro cell, and the method includes:
  • the measurement report includes macro cell signal quality information of a location where the UE is located;
  • a UE detecting unit configured to determine that a user equipment UE enters a cell covered by a home base station HNB signal
  • a UE authentication unit configured to determine that the UE does not have the right to access the HNB
  • a measurement report obtaining unit configured to obtain a measurement report of the UE, where the measurement report includes a macro of a location where the UE is located Cell signal quality information
  • a power adjustment unit configured to determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with a signal of the macro cell, and reduce a transmit power of the HNB.
  • Still another aspect of the present invention provides a home base station system including a home base station and the aforementioned home base station power control apparatus.
  • the technical solution provided by the embodiment of the present invention after the UE is not allowed to enter the coverage area of the HNB micro cell, adjusts the transmit power of the HNB according to the signal quality of the macro cell where the UE is located, thereby reducing interference of the HNB to the macro cell, and reducing The call drop phenomenon of the UE in the HNB micro cell coverage area is not allowed.
  • FIG. 1 is a flowchart of a method for controlling power of a home base station according to an embodiment of the present invention
  • FIG. 2 is a signaling flowchart of a method for controlling power of a home base station according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for adjusting transmit power of a home base station according to a measurement report according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another method for performing home base station transmit power adjustment according to a measurement report according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a home base station power control apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a power adjustment unit according to an embodiment of the present invention.
  • FIG. 7 is another schematic structural diagram of a power adjustment unit according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a third structure of a power adjustment unit according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a home base station power control system according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for controlling an HNB power according to an embodiment of the present invention, including the following steps:
  • S102 Determine that the UE does not have the right to access the HNB.
  • the measurement report includes macro cell signal quality information of a location where the UE is located;
  • S104 Determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with a signal of the macro cell, and reduce a transmit power of the HNB.
  • the execution body of each step of the above method may be the HNB itself or may be independent of the HNB. a functional entity.
  • Applying the foregoing solution after the UE does not have the right to enter the coverage area of the HNB micro cell, adjust the transmit power of the HNB according to the signal quality of the macro cell where the UE is located, thereby reducing the same-frequency interference of the HNB to the macro cell, and reducing the unprived UE.
  • the HNB power control method in the embodiment of the present invention will be described below by taking the power control by the HNB itself as an example and combining the specific signaling procedures.
  • FIG. 2 is a schematic flowchart of a HNB power control method according to an embodiment of the present invention, including the following steps:
  • the UE sends a LAU/RAU message to the HNB.
  • the UE initially camps in the macro cell. After the UE moves to the micro cell covered by the HNB transmission signal, the RRC (Radio Resource Control) connection is established with the HNB. After the RRC connection is established, the UE will send the HNB to the HNB. Initiate a location update process.
  • RRC Radio Resource Control
  • the UE sends a LAU (Location Area Update) and/or RAU (Routing Area Update) message to the HNB.
  • LAU Location Area Update
  • RAU Radio Access Area Update
  • the HNB can determine that the UE has entered its own signal coverage area.
  • the HNB monitors the LAU and/or RAU messages to determine whether the UE has entered its own coverage area. It can be understood that the HNB can also use other methods (for example, monitoring the RRC setup request message sent by the UE) to determine that the UE enters the HNB micro cell coverage area, which is not limited in this embodiment of the present invention.
  • the HNB determines the access authority of the UE.
  • the embodiment of the present invention is directed to the same-frequency interference situation that the unlicensed UE has in the micro-area covered by the HNB transmission signal.
  • the HNB checks whether the UE entering the coverage area has the right to access the HNB, if the authentication is not After passing, the subsequent steps are further performed to reduce the interference of the HNB to the macro cell by power control.
  • the UE If the UE has the right to access the HNB, the UE is allowed to normally reside in the micro cell where the UE is located, and the subsequent steps need not be performed.
  • the HNB sends a measurement control message to the UE.
  • the HNB After determining that the new UE entering the coverage area is an unprivileged UE, the HNB initiates a subsequent power control procedure: first sending a measurement control message to the UE, indicating the UE to the signal. Quality information is measured.
  • the UE measures the signal quality of the macro cell or the HNB, and carries the measurement result in the measurement report message to the HNB.
  • the HNB adjusts the transmit power according to the measurement report of the UE.
  • the HNB collects the measurement report of the UE, analyzes the measurement report, and adjusts the transmission power of the HNB according to the analysis result, thereby reducing interference of the HNB to the macro cell.
  • the measurement information sent by the UE may include signal quality information of the macro cell, for example, the received signal code power RSCP_ macro of the macro cell, the chip energy of the macro cell, and the interference power density ratio Ec/Io-macro.
  • the HNB can analyze the signal quality information of the macro cell, determine whether there is co-channel interference, and adjust the transmit power of the HNB accordingly to reduce the interference of the HNB to the macro cell.
  • the measurement report sent by the UE may further include signal quality information of the HNB, such as the received signal code power RSCP_micro of the HNB.
  • the HNB adjusts the transmit power according to the relationship between the signal quality between the macro cell and the micro cell, and can reduce the interference of the HNB transmit signal to the macro cell signal while ensuring the coverage effect of the HNB.
  • FIG. 3 is a flowchart of a method for performing HNB transmit power adjustment according to a measurement report according to an embodiment of the present invention, including the following steps:
  • the UE When the macro cell receiving signal code power RSCP_mac is small, the UE is located in the weak coverage area of the macro cell, and may also be referred to as a coverage dead zone. When the UE is in the coverage area of the macro cell base station coverage, normal calls cannot be guaranteed even if there is no interference from the HNB. In this case, the function of the HNB is to supplement the blind area covered by the macro cell base station, and the transmission power of the HNB need not be adjusted to ensure the coverage effect of the HNB.
  • the adjustment threshold RSCP-th can be set to -90dBm, that is, judge:
  • the interference condition is evaluated based on the chip energy of the macro cell and the interference power density ratio Ec/Io-ma.
  • Ec/Io-mac is less than a certain threshold, it is considered that there is strong co-channel interference, which may affect the normal call of the unprivileged UE in the macro cell. Therefore, further steps are needed to adjust the transmit power of the HNB.
  • the adjustment threshold Ec/Io-th can be set to -18dB, that is, judge:
  • the transmission power of the HNB may be appropriately reduced to reduce the signal transmitted by the HNB to the macro cell signal. Interference. It can be understood that, in order to preferentially guarantee the signal quality of the macro cell, the transmission power of the HNB can also be completely turned off.
  • the HNB analyzes the signal quality information of the macro cell, and determines that the UE is not in the macro cell base station coverage dead zone and has strong co-channel interference, and accordingly adjusts the transmit power of the HNB, thereby reducing HNB interference to the macro cell.
  • FIG. 4 is a flowchart of another method for performing HNB transmit power adjustment according to a measurement report according to an embodiment of the present invention, including the following steps:
  • S401 Determine whether the UE is in a macro cell base station coverage dead zone. If yes, execute S302, otherwise, end the power adjustment process.
  • S402 Determine whether the Ec/Io of the macro cell is less than a preset adjustment threshold. If yes, execute S403, otherwise end the power adjustment process.
  • S401-S402 can be similar to that of the S301-S302, and the description is not repeated in this embodiment.
  • the path loss PL Pulth Loss
  • the path loss PL-th the path loss of the HNB to the UE must be smaller than the boundary path loss threshold PL-th, where the typical value of PL-th is 47 dB, if PL ⁇ PL — th, indicating that the signal at the current edge is strong, and the transmit power can be appropriately reduced.
  • the measurement report is reported by the UE that has just entered the coverage area of the HNB micro cell, and therefore the UE can be considered to be currently at the coverage edge of the HNB.
  • the HNB first calculates the PL value of the HNB to the UE according to the RSCP_micro in the UE measurement report and its current transmit power P_pilot, and compares the value with PL-th. If PL ⁇ PL-th, further steps are performed. , otherwise the power adjustment process ends.
  • the coverage effect of the HNB is to be ensured while reducing the interference, it is necessary to limit the reduction in the transmission power.
  • the value of PL-PL-th can be approximated as the maximum allowable transmit power reduction.
  • the method of gradually reducing the transmission power of the HNB may also be used, that is, when it is determined that the HNB transmission power needs to be reduced, the adjustment is not performed once, but is less than ( The step value of PL-PL-th) gradually reduces the transmit power of the HNB.
  • the method for reducing the transmission power of the HNB may be an equal step adjustment, for example, by 2 dB each time, or by using an incremental adjustment method, for example, the first time The 2dB is reduced by 2dB, the second is reduced by 3dB, and the third is reduced by 4dB.
  • the specific adjustment mode of this embodiment is not required to be limited. After each adjustment, wait for the next time the UE enters the HNB micro cell coverage area, and then re-initiate the judgment process to determine whether it needs to be adjusted again.
  • the scheme can reduce the interference of the HNB to the HNB while reducing the interference of the HNB to the macro cell, and specify the maximum allowable transmit power reduction according to the boundary path loss threshold PLjh of the HNB. Coverage effect of HNB.
  • the present embodiment further considers the signal quality information of the HNB micro cell when determining whether to adjust the transmit power, and can reduce the interference of the HNB transmit signal to the macro cell signal while ensuring the HNB. Coverage effect. It can be understood that, in practical applications, the execution order of the foregoing determining steps S401, S402, and S403 may also be exchanged, or performed in parallel, and the UE may be in the macro cell base station coverage dead zone, that is, the S401 is not executed. These do not affect the implementation of the technical solution of the present invention.
  • the power control scheme provided in the foregoing embodiment of the present invention may be automatically performed, that is, real-time detection is performed whether a UE enters an HNB micro-cell coverage area and performs a subsequent process; or may be performed periodically or manually.
  • a detection duration TO may be preset to detect whether the UE enters the HNB micro '_1, the area coverage area, and performs subsequent processes within the TO duration range.
  • the power adjustment can be stopped when the transmission power of the HNB has been adjusted to the minimum value.
  • the embodiment of the present invention further provides a home base station power control device, as shown in FIG. 5:
  • the UE detecting unit 510 is configured to determine that the user equipment UE enters the micro cell covered by the home base station HNB signal;
  • the UE authentication unit 520 is configured to determine that the UE does not have the right to access the HNB.
  • a measurement report obtaining unit 530 configured to obtain a measurement report of the UE, where the measurement report includes macro cell signal quality information of a location where the UE is located;
  • the power adjustment unit 540 is configured to determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with the signal of the macro cell, and reduce the transmit power of the HNB.
  • the transmit power of the HNB is adjusted according to the signal quality of the macro cell where the UE is located, thereby reducing the interference of the HNB transmit signal on the macro cell signal, and reducing the weightlessness.
  • the UE detecting unit may determine, according to the received location update LAU message and/or the routing area update RAU message, that the UE enters the micro cell covered by the HNB signal.
  • the measurement report obtaining unit 530 may include:
  • control message sending subunit configured to send a measurement control message to the UE
  • a measurement report receiving subunit configured to receive a measurement report sent by the UE according to the measurement control message, where the measurement report includes macro cell signal quality information of a location where the UE is located.
  • the macro cell signal quality information obtained by the measurement report obtaining unit 530 may include: a received signal code power of the macro cell RSCP_macro and a chip power of the macro cell and an interference power density t ⁇ Ec/Io_macro.
  • a schematic structural diagram of the power adjustment unit 540 may include: a first determining sub-unit 541, configured to determine whether an Ec/Io-mao is smaller than a preset adjustment threshold; The unit 544 is configured to reduce the transmit power of the HNB when the determination result of the first determining sub-unit 541 is YES.
  • the measurement report obtained by the measurement report obtaining unit 530 may further include a received signal code power RSCP_ macro of the macro cell.
  • FIG. 7 is a schematic diagram showing another structure of the power adjustment unit 540. Based on the embodiment shown in FIG. 6, the method further includes:
  • a second determining sub-unit 542 configured to determine, according to the RSCP_macro, whether the UE is in a macro-cell base station coverage dead zone before the first determining sub-unit 541 performs the determination; if not, triggering the first determining sub- Unit 541 further determines if the Ec/Io-macro is less than a preset adjustment threshold. Applying the power adjustment unit shown in FIG. 7 to analyze the signal quality information of the macro cell, and determining that the UE is in the coverage area of the macro cell base station and the same frequency interference, the transmission power of the HNB is adjusted accordingly, thereby Reduce the interference of the HNB to the macro cell.
  • the measurement report obtained by the measurement report obtaining unit 530 may further include signal quality information of the micro cell of the location where the UE is located, and the information may be the received signal code power RSCP_micro of the HNB.
  • FIG. 8 is a schematic diagram showing another structure of the power adjustment unit 540. Based on the diagram shown in FIG. 7, the method further includes:
  • a third determining sub-unit 543 configured to: after the determining result of the first determining sub-unit 541 is YES, before the power adjusting sub-unit 544 decreases the transmit power of the HNB, calculate the HNB according to the RSCP-micro a path loss PL to the UE; determining whether the PL is smaller than a boundary path loss threshold PL_th of the HNB; if yes, triggering the power adjustment sub-unit 544 to decrease a transmit power of the HNB.
  • the maximum reduction of the transmit power of the HNB by the power adjustment sub-unit 544 may be PL-PL-th.
  • the power adjustment sub-unit 544 can step down the transmit power of the HNB with a step value less than (PL-PL-th).
  • the home base station power control apparatus provided by the embodiment of the present invention may be an HNB, or may be embedded in the HNB, or may be a functional entity independent of the HNB.
  • the embodiment of the present invention further provides a home base station power control system. Referring to FIG. 9, the system includes a home base station 910 and a home base station power control device 920.
  • the home base station power control apparatus may be the same as the foregoing home base station power control apparatus, and the description thereof will not be repeated here.
  • the disclosed systems, devices, and methods may be implemented in other ways without departing from the spirit and scope of the application.
  • the present embodiments are merely exemplary, and should not be taken as limiting, and the specific details are not intended to limit the purpose of the application.
  • the division of the unit or subunit is only a logical function division, and the actual implementation may have another division manner, for example, a plurality of units or a plurality of subunits are combined.
  • multiple units may or may be combined or integrated into another system, or some features may be omitted or not implemented.
  • the described systems, apparatus, and methods, as well as the schematic diagrams of various embodiments, may be combined or integrated with other systems, modules, techniques or methods without departing from the scope of the present application.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

A power control method, device and system for a home base station are provided in the embodiments of the present invention. The power control method for the home base station is applied in a communication network that contains a macro cell and a micro cell, and the method includes: determining that a User Equipment (UE) enters the micro cell which is covered with a Home NodeB (HNB) signal (S101); determining that the UE has not an authorization to access the HNB (S102); obtaining a UE measurement report (S103), which contains signal quality information of the macro cell where the UE locates in; and determining that a co-frequency interference of the micro cell signal to the macro cell signal exists according to the signal quality information of the macro cell, and reducing a transmission power of the HNB (S104).

Description

一种家庭基站功率控制方法、 装置及*** 本申请要求于 2010年 7月 15日提交中国专利局、 申请号 201010229786.6 发明名称为 "一种家庭基站功率控制方法、 装置及***" 的中国专利申请的 优先权， 其全部内容通过引用结合在本申请中。  The present invention claims to be filed on July 15, 2010 by the Chinese Patent Office, Application No. 201010229786.6, entitled "A Home Base Station Power Control Method, Apparatus and System" Priority is hereby incorporated by reference in its entirety.
技术领域 Technical field
本发明涉及通信技术领域， 特别是涉及一种家庭基站功率控制方法、 装 置及***。  The present invention relates to the field of communications technologies, and in particular, to a home base station power control method, apparatus, and system.
背景技术 Background technique
随着移动通信用户数量的迅速增加以及用户需求的不断提高， 移动通信 ***设备也呈现出多样化的发展趋势。 HNB ( Home NodeB , 家庭基站 )作为 一种小型化的基站， 针对的是家庭、 学校、 企业等应用场景。 基于 ΗΝΒ 或 HeNB的网络***， 可以有效改善室内覆盖， 提高室内接入速率， 减少时延， 满足各种用户应用需求， 同时还能够减少宏基站的负荷， 使宏基站容量主要 服务于室外或运动中用户。  With the rapid increase in the number of mobile communication users and the ever-increasing user demand, mobile communication system equipment has also shown a diversified development trend. HNB (Home NodeB, Home Base Station) is a miniaturized base station that targets home, school, and enterprise applications. The network system based on ΗΝΒ or HeNB can effectively improve indoor coverage, improve indoor access rate, reduce delay, meet various user application requirements, and reduce the load of macro base stations, so that macro base station capacity mainly serves outdoor or sports. User.
HNB应用场景包括扩充容量场景和补充覆盖场景： 扩充容量场景釆用叠 加式组网， 即， 在宏小区网络覆盖上面， 叠加一层 HNB微小区覆盖。 在补充 覆盖场景中， HNB微小区覆盖在宏小区网络覆盖的盲区。 无论在上述哪种应 用场景下， 都会出现宏小区网络覆盖和 HNB微小区覆盖重叠的现象。 由于运 营商可能釆用多种频率方案， 因此， HNB与宏基站使用相同频点的情况难以 避免， 从而导致 HNB与宏基站之间的同频干扰， 其具体影响表现为： 当不具 有接入 HNB权限的 UE (以下简称无权 UE )移动到 HNB微小区覆盖区域时 , 由于 HNB信号较强， 会对此 UE产生强干扰， 严重时将导致掉话， 从而造成 宏基站范围内的覆盖 "死区"。  The HNB application scenario includes an extended capacity scenario and a supplementary coverage scenario: The extended capacity scenario uses an overlay network, that is, overlays a layer of HNB microcell coverage on the macrocell network coverage. In the supplementary coverage scenario, the HNB microcell covers the blind area covered by the macrocell network. Regardless of which of the above application scenarios, there is a phenomenon that the macro cell network coverage and the HNB micro cell coverage overlap. Since operators may use multiple frequency schemes, it is difficult to avoid the use of the same frequency point by the HNB and the macro base station, which results in co-channel interference between the HNB and the macro base station. The specific impact is as follows: When the HNB-privileged UE (hereinafter referred to as the unprivileged UE) moves to the HNB micro-cell coverage area, the strong HNB signal will cause strong interference to the UE, and in severe cases, the call will be dropped, resulting in coverage within the macro base station. dead zone".
1 1
+ 发明内容 + Summary of the invention
为解决上述技术问题， 本发明实施例提供了一种家庭基站功率控制方法、 装置及***， 以解决 HNB与宏基站之间的同频干扰问题， 技术方案如下： 本发明一方面提供一种家庭基站功率控制方法， 应用于包括宏 ' j、区和微 小区的通讯网络中， 所述方法包括：  In order to solve the above technical problem, an embodiment of the present invention provides a method, a device, and a system for controlling a home base station power to solve the problem of co-channel interference between an HNB and a macro base station. The technical solution is as follows: The base station power control method is applied to a communication network including a macro, a cell, and a micro cell, and the method includes:
确定有用户设备 UE进入家庭基站 HNB信号所覆盖的微小区；  Determining that the user equipment UE enters the micro cell covered by the HNB signal of the home base station;
确定所述 UE不具有接入所述 HNB的权限；  Determining that the UE does not have the right to access the HNB;
获得所述 UE的测量报告，所述测量报告中包括所述 UE所处位置的宏小 区信号质量信息；  Obtaining a measurement report of the UE, where the measurement report includes macro cell signal quality information of a location where the UE is located;
根据所述宏小区信号质量信息确定所述微小区的信号对于所述宏小区的 信号存在同频干扰， 降低所述 HNB的发射功率。  Determining, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with the signal of the macro cell, and reduces the transmit power of the HNB.
本发明另一方面提供一种家庭基站功率控制装置， 应用于包括宏小区和 微小区的通讯网络中， 所述装置包括：  Another aspect of the present invention provides a home base station power control apparatus, which is applied to a communication network including a macro cell and a micro cell, where the apparatus includes:
UE检测单元， 用于确定有用户设备 UE进入家庭基站 HNB信号所覆盖 的 小区；  a UE detecting unit, configured to determine that a user equipment UE enters a cell covered by a home base station HNB signal;
UE鉴权单元， 用于确定所述 UE不具有接入所述 HNB的权限； 测量报告获得单元，用于获得所述 UE的测量报告， 所述测量报告中包括 所述 UE所处位置的宏小区信号质量信息；  a UE authentication unit, configured to determine that the UE does not have the right to access the HNB, and a measurement report obtaining unit, configured to obtain a measurement report of the UE, where the measurement report includes a macro of a location where the UE is located Cell signal quality information;
功率调整单元， 用于根据所述宏小区信号质量信息确定所述微小区的信 号对于宏小区的信号存在同频干扰， 降低所述 HNB的发射功率。  And a power adjustment unit, configured to determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with a signal of the macro cell, and reduce a transmit power of the HNB.
本发明再一方面提供一种家庭基站***， 包括家庭基站以及前述的家庭 基站功率控制装置。  Still another aspect of the present invention provides a home base station system including a home base station and the aforementioned home base station power control apparatus.
本发明实施例所提供的技术方案， 当无权 UE进入 HNB微小区覆盖区域 后， 根据该 UE的所在的宏小区的信号质量， 调整 HNB的发射功率， 从而降 低 HNB对宏小区的干扰， 减少无权 UE在 HNB微小区覆盖区域的掉话现象。  The technical solution provided by the embodiment of the present invention, after the UE is not allowed to enter the coverage area of the HNB micro cell, adjusts the transmit power of the HNB according to the signal quality of the macro cell where the UE is located, thereby reducing interference of the HNB to the macro cell, and reducing The call drop phenomenon of the UE in the HNB micro cell coverage area is not allowed.
附图说明 DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实 施例或现有技术描述中所需要使用的附图作简单的介绍， 显而易见地， 下面 描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 还可以根据这些附图获得其他的附图。 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will be true. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are to be regarded as the The drawings obtain other figures.
图 1为本发明实施例的一种家庭基站功率控制方法流程图；  FIG. 1 is a flowchart of a method for controlling power of a home base station according to an embodiment of the present invention;
图 2为本发明实施例的一种家庭基站功率控制方法信令流程图； 图 3 为本发明实施例的一种根据测量报告进行家庭基站发射功率调整的 方法流程图；  2 is a signaling flowchart of a method for controlling power of a home base station according to an embodiment of the present invention; FIG. 3 is a flowchart of a method for adjusting transmit power of a home base station according to a measurement report according to an embodiment of the present invention;
图 4为本发明实施例的另一种根据测量报告进行家庭基站发射功率调整 的方法流程图；  4 is a flowchart of another method for performing home base station transmit power adjustment according to a measurement report according to an embodiment of the present invention;
图 5为本发明实施例的家庭基站功率控制装置的结构示意图；  FIG. 5 is a schematic structural diagram of a home base station power control apparatus according to an embodiment of the present invention; FIG.
图 6为本发明实施例的功率调整单元的一种结构示意图；  6 is a schematic structural diagram of a power adjustment unit according to an embodiment of the present invention;
图 7为本发明实施例的功率调整单元的另一种结构示意图；  FIG. 7 is another schematic structural diagram of a power adjustment unit according to an embodiment of the present invention; FIG.
图 8为本发明实施例的功率调整单元的第三种结构示意图；  FIG. 8 is a schematic diagram of a third structure of a power adjustment unit according to an embodiment of the present invention; FIG.
图 9为本发明实施例的家庭基站功率控制***的结构示意图。  FIG. 9 is a schematic structural diagram of a home base station power control system according to an embodiment of the present invention.
具体实施方式 detailed description
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例仅是本发明一部分实施例， 而不 是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员所获得的所 有其他实施例， 都属于本发明保护的范围。  The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of the present invention.
图 1为本发明实施例的一种 HNB功率控制方法流程图， 包括以下步骤： FIG. 1 is a flowchart of a method for controlling an HNB power according to an embodiment of the present invention, including the following steps:
5101 , 确定有用户设备 UE进入家庭基站 HNB信号所覆盖的微小区；5101, determining that a user equipment UE enters a micro cell covered by a home base station HNB signal;
5102, 确定所述 UE不具有接入所述 HNB的权限； S102: Determine that the UE does not have the right to access the HNB.
5103 , 获得所述 UE的测量报告， 所述测量报告中， 包括所述 UE所处位 置的宏小区信号质量信息；  And obtaining a measurement report of the UE, where the measurement report includes macro cell signal quality information of a location where the UE is located;
5104, 根据所述宏小区信号质量信息确定所述微小区的信号对于所述宏 小区的信号存在同频干扰， 降低所述 HNB的发射功率。  S104: Determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with a signal of the macro cell, and reduce a transmit power of the HNB.
上述方法各步骤的执行主体， 可以是 HNB本身， 也可以是独立于 HNB 的一个功能实体。 应用上述方案， 当无权 UE进入 HNB微小区覆盖区域后， 根据该 UE 的所在的宏小区的信号质量， 调整 HNB 的发射功率， 从而降低 HNB对宏小区的同频干扰，减少无权 UE在 HNB微小区覆盖区域的掉话现象。 The execution body of each step of the above method may be the HNB itself or may be independent of the HNB. a functional entity. Applying the foregoing solution, after the UE does not have the right to enter the coverage area of the HNB micro cell, adjust the transmit power of the HNB according to the signal quality of the macro cell where the UE is located, thereby reducing the same-frequency interference of the HNB to the macro cell, and reducing the unprived UE. The call drop phenomenon in the coverage area of the HNB micro area.
下面将以由 HNB自身执行功率控制为例， 结合具体的信令流程， 对本发 明实施例的 HNB功率控制方法进行说明。  The HNB power control method in the embodiment of the present invention will be described below by taking the power control by the HNB itself as an example and combining the specific signaling procedures.
图 2所示为本发明实施例的 HNB功率控制方法信令流程图， 包括以下步 骤：  FIG. 2 is a schematic flowchart of a HNB power control method according to an embodiment of the present invention, including the following steps:
5201 , UE向 HNB发送 LAU/RAU消息。  5201. The UE sends a LAU/RAU message to the HNB.
假设 UE初始驻留在宏小区中， 当 UE移动至 HNB发射信号覆盖的微小 区后， 首先会与 HNB建立 RRC ( Radio Resource Control, 无线资源控制 )连 接， RRC连接建立完成之后， UE将向 HNB发起位置更新过程。  It is assumed that the UE initially camps in the macro cell. After the UE moves to the micro cell covered by the HNB transmission signal, the RRC (Radio Resource Control) connection is established with the HNB. After the RRC connection is established, the UE will send the HNB to the HNB. Initiate a location update process.
在本实施例中， UE向 HNB发送 LAU ( Location Area Update, 位置更新 ) 和 /或 RAU ( Routing Area Update, 路由区更新 ) 消息。 HNB收到 LAU和 /或 RAU消息后， 可以确定有 UE进入自身的信号覆盖区域。  In this embodiment, the UE sends a LAU (Location Area Update) and/or RAU (Routing Area Update) message to the HNB. After receiving the LAU and/or RAU message, the HNB can determine that the UE has entered its own signal coverage area.
在本实施例中 , HNB通过对 LAU和 /或 RAU消息进行监测 ,从而确定是 否有 UE进入自身覆盖区域。可以理解的是， HNB也可以釆用其他的方式（例 如监测 UE发送的 RRC建立请求消息）确定有 UE进入 HNB微小区覆盖区域， 本发明实施例对此并不进行限定。  In this embodiment, the HNB monitors the LAU and/or RAU messages to determine whether the UE has entered its own coverage area. It can be understood that the HNB can also use other methods (for example, monitoring the RRC setup request message sent by the UE) to determine that the UE enters the HNB micro cell coverage area, which is not limited in this embodiment of the present invention.
5202 , HNB对 UE的接入权限进行判断。  5202. The HNB determines the access authority of the UE.
本发明实施例是针对无权 UE在 HNB发射信号覆盖的微小区所存在的同 频干扰状况提出，在本步骤中， HNB检查进入覆盖区域的 UE是否有接入 HNB 的权限，如果鉴权未通过，则进一步执行后续步骤，通过功率控制来降低 HNB 对宏小区的干扰。  The embodiment of the present invention is directed to the same-frequency interference situation that the unlicensed UE has in the micro-area covered by the HNB transmission signal. In this step, the HNB checks whether the UE entering the coverage area has the right to access the HNB, if the authentication is not After passing, the subsequent steps are further performed to reduce the interference of the HNB to the macro cell by power control.
如果 UE具有接入 HNB的权限， 则允许 UE正常驻留在 UE所处位置的 微小区中， 不需要继续执行后续步骤。  If the UE has the right to access the HNB, the UE is allowed to normally reside in the micro cell where the UE is located, and the subsequent steps need not be performed.
5203 , HNB向 UE发送测量控制消息。  5203. The HNB sends a measurement control message to the UE.
HNB确定新进入覆盖区域的 UE为无权 UE后， 发起后续的功率控制流 程： 首先向 UE发送 measurement control (测量控制） 消息， 指示 UE对信号 质量信息进行测量。 After determining that the new UE entering the coverage area is an unprivileged UE, the HNB initiates a subsequent power control procedure: first sending a measurement control message to the UE, indicating the UE to the signal. Quality information is measured.
5204, UE将测量报告消息上报给 HNB。  S204: The UE reports the measurement report message to the HNB.
UE 对宏小区或 HNB 的信号质量进行测量， 并将测量结果携带于 measurement report (测量才艮告 ) 消息中发送给 HNB。  The UE measures the signal quality of the macro cell or the HNB, and carries the measurement result in the measurement report message to the HNB.
5205, HNB根据 UE的测量报告， 调整发射功率。  5205. The HNB adjusts the transmit power according to the measurement report of the UE.
HNB收集 UE的测量报告，并对测量报告进行分析，根据分析结果对 HNB 的发射功率进行调整， 降低 HNB对宏小区的干扰。  The HNB collects the measurement report of the UE, analyzes the measurement report, and adjusts the transmission power of the HNB according to the analysis result, thereby reducing interference of the HNB to the macro cell.
其中， UE发送的测量 4艮告中， 可以包括宏小区的信号质量信息， 例如宏 小区的接收信号码功率 RSCP— macro、 宏小区的码片能量与干扰功率密度比 Ec/Io— macro等。 HNB可以对宏小区的信号质量信息进行分析， 判断是否存在 同频干扰， 并且对 HNB的发射功率进行相应调整， 降低 HNB对宏小区的干 扰。  The measurement information sent by the UE may include signal quality information of the macro cell, for example, the received signal code power RSCP_ macro of the macro cell, the chip energy of the macro cell, and the interference power density ratio Ec/Io-macro. The HNB can analyze the signal quality information of the macro cell, determine whether there is co-channel interference, and adjust the transmit power of the HNB accordingly to reduce the interference of the HNB to the macro cell.
此外， 在 UE发送的测量报告中， 还可以进一步包括 HNB的信号质量信 息， 例如 HNB的接收信号码功率 RSCP— micro。 HNB根据宏小区及微小区之 间的信号质量的相互关系， 对发射功率进行调整， 可以在降低 HNB发射信号 对宏小区信号的干扰的同时， 保证 HNB的覆盖效果。 图 3所示为本发明实施例所提供的一种根据测量报告进行 HNB发射功率 调整的方法流程图， 包括以下步骤：  In addition, the measurement report sent by the UE may further include signal quality information of the HNB, such as the received signal code power RSCP_micro of the HNB. The HNB adjusts the transmit power according to the relationship between the signal quality between the macro cell and the micro cell, and can reduce the interference of the HNB transmit signal to the macro cell signal while ensuring the coverage effect of the HNB. FIG. 3 is a flowchart of a method for performing HNB transmit power adjustment according to a measurement report according to an embodiment of the present invention, including the following steps:
S301 , 判断 UE是否处于宏小区基站覆盖盲区， 如果是， 则执行 S302, 否则结束功率调整流程。  S301. Determine whether the UE is in a macro cell base station coverage dead zone. If yes, execute S302, otherwise, end the power adjustment process.
当 UE的宏小区接收信号码功率 RSCP— macro很小时，说明 UE位于宏小 区的弱覆盖区域， 也可以称为覆盖盲区。 当 UE处于宏小区基站覆盖盲区时， 即使不存在 HNB的干扰， 也无法保证正常通话。 在这种情况下， HNB的作 用是补充宏小区基站覆盖的盲区， 可以不需要对 HNB的发射功率进行调整， 以保证 HNB的覆盖效果。  When the macro cell receiving signal code power RSCP_mac is small, the UE is located in the weak coverage area of the macro cell, and may also be referred to as a coverage dead zone. When the UE is in the coverage area of the macro cell base station coverage, normal calls cannot be guaranteed even if there is no interference from the HNB. In this case, the function of the HNB is to supplement the blind area covered by the macro cell base station, and the transmission power of the HNB need not be adjusted to ensure the coverage effect of the HNB.
在实际应用中， 可以将调整门限值 RSCP— th设置为 -90dBm, 即判断： In practical applications, the adjustment threshold RSCP-th can be set to -90dBm, that is, judge:
RSCP macro > -90dBm 是否成立， 如果是， 则进一步执行后续步骤， 否则结束功率调整流程。RSCP macro > -90dBm Whether it is established, if yes, further steps are performed, otherwise the power adjustment process is ended.
5302, 判断宏小区的 Ec/Io是否小于预设的调整门限值。 如果是， 则执行 S303 , 否则结束功率调整流程。 5302. Determine whether the Ec/Io of the macro cell is less than a preset adjustment threshold. If yes, execute S303, otherwise the power adjustment process ends.
本实施例中，根据宏小区的码片能量与干扰功率密度比 Ec/Io— macro来评 估干扰情况。当 Ec/Io— macro小于一定的门限值时，认为存在较强的同频干扰， 可能会影响无权 UE在宏小区的正常通话， 因此需要进一步执行后续步骤对 HNB的发射功率进行调整。  In this embodiment, the interference condition is evaluated based on the chip energy of the macro cell and the interference power density ratio Ec/Io-ma. When the Ec/Io-mac is less than a certain threshold, it is considered that there is strong co-channel interference, which may affect the normal call of the unprivileged UE in the macro cell. Therefore, further steps are needed to adjust the transmit power of the HNB.
在实际应用中， 可以将调整门限值 Ec/Io— th设置为 -18dB, 即判断： In practical applications, the adjustment threshold Ec/Io-th can be set to -18dB, that is, judge:
Ec/Io— macro < -18dB Ec/Io— macro < -18dB
是否成立， 如果是， 则进一步执行后续步骤， 否则结束功率调整流程。 Whether it is established, if yes, further steps are performed, otherwise the power adjustment process is ended.
5303 , 降低 HNB的发射功率。 5303, reducing the transmission power of the HNB.
当确定无权 UE 不处于宏小区基站覆盖盲区、 并且存在较强的同频干扰 时， 为保证宏小区的信号质量， 可以适当降低 HNB的发射功率， 以减小 HNB 发射的信号对宏小区信号的干扰。 可以理解的是， 为了优先保证宏小区的信 号质量， 也可以将 HNB的发射功率全部关闭。  When it is determined that the UE is not in the macro cell base station coverage dead zone and there is strong co-channel interference, in order to ensure the signal quality of the macro cell, the transmission power of the HNB may be appropriately reduced to reduce the signal transmitted by the HNB to the macro cell signal. Interference. It can be understood that, in order to preferentially guarantee the signal quality of the macro cell, the transmission power of the HNB can also be completely turned off.
本实施例中， HNB通过对宏小区的信号质量信息进行分析， 在确定 UE 不处于宏小区基站覆盖盲区、 以及存在较强同频干扰的情况下， 对 HNB的发 射功率进行相应调整， 从而降低 HNB对宏小区的干扰。  In this embodiment, the HNB analyzes the signal quality information of the macro cell, and determines that the UE is not in the macro cell base station coverage dead zone and has strong co-channel interference, and accordingly adjusts the transmit power of the HNB, thereby reducing HNB interference to the macro cell.
可以理解的是， 在实际应用中， 上述的判断步骤 S301和 S302的执行顺 序也可以交换， 或者并列执行。 并且， 也可以不执行 S301 , 即不考虑 UE是 否处于宏小区基站覆盖盲区， 直接根据 Ec/Io— macro确定是否存在同频干扰， 然后确定是否对 HNB的发射功率进行相应调整，这些并不影响本发明技术方 案的实现。 图 4所示为本发明实施例所提供的另一种根据测量报告进行 HNB发射功 率调整的方法流程图， 包括以下步骤：  It can be understood that, in practical applications, the execution order of the above-mentioned judging steps S301 and S302 can also be exchanged or performed in parallel. Moreover, S301 may not be performed, that is, whether the UE is in the coverage area of the macro cell base station coverage, whether the co-channel interference is directly determined according to the Ec/Io-macro, and then determining whether to adjust the transmission power of the HNB, which does not affect Implementation of the technical solution of the present invention. FIG. 4 is a flowchart of another method for performing HNB transmit power adjustment according to a measurement report according to an embodiment of the present invention, including the following steps:
S401 , 判断 UE是否处于宏小区基站覆盖盲区， 如果是， 则执行 S302, 否则结束功率调整流程。 5402, 判断宏小区的 Ec/Io是否小于预设的调整门限值， 如果是， 则执行 S403 , 否则结束功率调整流程。 S401. Determine whether the UE is in a macro cell base station coverage dead zone. If yes, execute S302, otherwise, end the power adjustment process. S402: Determine whether the Ec/Io of the macro cell is less than a preset adjustment threshold. If yes, execute S403, otherwise end the power adjustment process.
其中， S401-S402的具体实现可以与 S301-S302类似， 本实施例不再进行 重复说明。  The specific implementation of the S401-S402 can be similar to that of the S301-S302, and the description is not repeated in this embodiment.
5403 , 判断 HNB到 UE的路径损耗是否小于 HNB的边界路径损耗门限 值。  5403. Determine whether the path loss of the HNB to the UE is less than a boundary path loss threshold of the HNB.
为了保证 HNB的覆盖范围， 在相关协议中规定了 HNB到 UE的路径损 耗 PL ( Path Loss ) 必须小于边界路径损耗门限值 PL— th, 其中 PL— th的典型 值为 47dB, 如果 PL<PL— th, 说明当前的边缘的信号较强， 可以适当降低发射 功率。  In order to ensure the coverage of the HNB, it is specified in the relevant protocol that the path loss PL (Path Loss) of the HNB to the UE must be smaller than the boundary path loss threshold PL-th, where the typical value of PL-th is 47 dB, if PL<PL — th, indicating that the signal at the current edge is strong, and the transmit power can be appropriately reduced.
其中 PL的定义如下：  The definition of PL is as follows:
PL = P_pilot-RSCP_micro  PL = P_pilot-RSCP_micro
在本发明实施例中， 测量报告是由刚进入 HNB微小区覆盖区域的 UE所 上报的， 因此可以认为该 UE当前处于 HNB的覆盖边缘。 HNB首先根据 UE 测量报告中的 RSCP— micro, 以及自身当前的发射功率 P_pilot计算得到 HNB 到 UE的 PL值， 将该值与 PL— th进行比较， 如果 PL < PL— th, 则进一步执行 后续步骤， 否则结束功率调整流程。  In the embodiment of the present invention, the measurement report is reported by the UE that has just entered the coverage area of the HNB micro cell, and therefore the UE can be considered to be currently at the coverage edge of the HNB. The HNB first calculates the PL value of the HNB to the UE according to the RSCP_micro in the UE measurement report and its current transmit power P_pilot, and compares the value with PL-th. If PL < PL-th, further steps are performed. , otherwise the power adjustment process ends.
5404, 降低 HNB的发射功率。  5404, reducing the transmit power of the HNB.
在本实施例中， 由于要在降低干扰的同时保证 HNB的覆盖效果， 因此需 要对发射功率的降低幅度进行限定。 在实际应用中， 可以近似将 PL-PL— th的 值作为最大允许的发射功率降低幅度。  In the present embodiment, since the coverage effect of the HNB is to be ensured while reducing the interference, it is necessary to limit the reduction in the transmission power. In practical applications, the value of PL-PL-th can be approximated as the maximum allowable transmit power reduction.
在实际应用中， 要保证 HNB微小区覆盖区域内的无权 UE正常通话， 可 能并不需要将发射功率降低至最大幅度， 另一方面， 进入 HNB微小区覆盖区 域内的 UE, 也不一定立即进行业务。 基于上述情况， 在本发明的另一个实施 例中， 也可以釆用逐步降低 HNB发射功率的方式， 也就是说， 当确定需要降 低 HNB发射功率时， 并不是一次调整到位， 而是按照小于（PL-PL— th )的步 长值， 逐步降低 HNB的发射功率。 其中， 降低 HNB发射功率的方式可以是 等步长调整， 例如每次降低 2dB, 也可以釆用增量调整的方式， 例如第一次 降低 2dB、 第二次降低 3dB、 第三处降低 4dB ... ...本实施例对具体的调整方式 并不需要进行限定。 每次调整之后， 等待下一次有 UE进入 HNB微小区覆盖 区域时， 再重新发起判断流程， 确定是否需要再次调整。 应用该方案， 可以 在降低 HNB对宏小区的干扰的同时， 尽量减小对 HNB的发射功率的降低程 度， 并且根据 HNB的边界路径损耗门限值 PLjh规定了最大允许的发射功率 降低幅度， 保证 HNB的覆盖效果。 In practical applications, it is not necessary to reduce the transmit power to the maximum amplitude to ensure the normal call of the unprived UE in the coverage area of the HNB micro cell. On the other hand, the UE entering the coverage area of the HNB micro cell is not necessarily immediately. Conduct business. Based on the above situation, in another embodiment of the present invention, the method of gradually reducing the transmission power of the HNB may also be used, that is, when it is determined that the HNB transmission power needs to be reduced, the adjustment is not performed once, but is less than ( The step value of PL-PL-th) gradually reduces the transmit power of the HNB. The method for reducing the transmission power of the HNB may be an equal step adjustment, for example, by 2 dB each time, or by using an incremental adjustment method, for example, the first time The 2dB is reduced by 2dB, the second is reduced by 3dB, and the third is reduced by 4dB. The specific adjustment mode of this embodiment is not required to be limited. After each adjustment, wait for the next time the UE enters the HNB micro cell coverage area, and then re-initiate the judgment process to determine whether it needs to be adjusted again. The scheme can reduce the interference of the HNB to the HNB while reducing the interference of the HNB to the macro cell, and specify the maximum allowable transmit power reduction according to the boundary path loss threshold PLjh of the HNB. Coverage effect of HNB.
与前一实施例相比， 本实施例在确定是否对发射功率进行调整时， 进一 步考虑了 HNB微小区的信号质量信息， 可以在降低 HNB发射信号对宏小区 信号的干扰的同时， 保证 HNB的覆盖效果。 可以理解的是， 在实际应用中， 上述的判断步骤 S401、 S402、 S403的执行顺序也可以交换， 或者并列执行， 并且， 同样可以不考虑 UE是否处于宏小区基站覆盖盲区， 即不执行 S401 , 这些并不影响本发明技术方案的实现。 可以理解的是， 上述本发明实施例所提供的功率控制方案， 可以是自动 执行， 即： 实时检测是否有 UE进入 HNB微小区覆盖区域并执行后续流程； 也可以是周期性执行或人工触发执行， 对于周期性执行或人工触发执行的方 式， 可以预先设置一个检测时长 TO,在 TO的时长范围内检测是否有 UE进入 HNB微' _1、区覆盖区域并执行后续流程。 对于根据 PL值进行功率调整的方案， 无论釆用上述哪种方式， 当 HNB的发射功率已经调整到最小值后， 都可以停 止对功率的调整。  Compared with the previous embodiment, the present embodiment further considers the signal quality information of the HNB micro cell when determining whether to adjust the transmit power, and can reduce the interference of the HNB transmit signal to the macro cell signal while ensuring the HNB. Coverage effect. It can be understood that, in practical applications, the execution order of the foregoing determining steps S401, S402, and S403 may also be exchanged, or performed in parallel, and the UE may be in the macro cell base station coverage dead zone, that is, the S401 is not executed. These do not affect the implementation of the technical solution of the present invention. It can be understood that the power control scheme provided in the foregoing embodiment of the present invention may be automatically performed, that is, real-time detection is performed whether a UE enters an HNB micro-cell coverage area and performs a subsequent process; or may be performed periodically or manually. For the manner of periodic execution or manual trigger execution, a detection duration TO may be preset to detect whether the UE enters the HNB micro '_1, the area coverage area, and performs subsequent processes within the TO duration range. For the scheme of power adjustment according to the PL value, regardless of which of the above methods, the power adjustment can be stopped when the transmission power of the HNB has been adjusted to the minimum value.
此外， 如果 HNB掉电， 则再次开机后， 可以将 HNB的发射功率恢复为 初始值。 相应于上面的方法实施例， 本发明实施例还提供一种家庭基站功率控制 装置， 参见图 5所示： 包括：  In addition, if the HNB is powered down, the HNB's transmit power can be restored to its initial value after being turned on again. Corresponding to the above method embodiment, the embodiment of the present invention further provides a home base station power control device, as shown in FIG. 5:
UE检测单元 510,用于确定有用户设备 UE进入家庭基站 HNB信号所覆 盖的微小区；  The UE detecting unit 510 is configured to determine that the user equipment UE enters the micro cell covered by the home base station HNB signal;
UE鉴权单元 520, 用于确定所述 UE不具有接入所述 HNB的权限； 测量报告获得单元 530,用于获得所述 UE的测量报告，所述测量报告中， 包括所述 UE所处位置的宏小区信号质量信息； The UE authentication unit 520 is configured to determine that the UE does not have the right to access the HNB. a measurement report obtaining unit 530, configured to obtain a measurement report of the UE, where the measurement report includes macro cell signal quality information of a location where the UE is located;
功率调整单元 540,用于根据所述宏小区信号质量信息确定所述微小区的 信号对于宏小区的信号存在同频干扰， 降低所述 HNB的发射功率。  The power adjustment unit 540 is configured to determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with the signal of the macro cell, and reduce the transmit power of the HNB.
应用上述控制装置， 当无权 UE进入 HNB微小区覆盖区域后， 根据该 UE的所在的宏小区的信号质量，调整 HNB的发射功率，从而降低 HNB发射 信号对宏小区信号的干扰，减少无权 UE在 HNB微小区覆盖区域的掉话现象。  Applying the foregoing control device, after the UE is not allowed to enter the coverage area of the HNB micro cell, the transmit power of the HNB is adjusted according to the signal quality of the macro cell where the UE is located, thereby reducing the interference of the HNB transmit signal on the macro cell signal, and reducing the weightlessness. The call drop phenomenon of the UE in the coverage area of the HNB micro cell.
其中，所述 UE检测单元可以根据接收到的位置更新 LAU消息和 /或路由 区更新 RAU消息， 确定有 UE进入 HNB信号所覆盖的微小区。  The UE detecting unit may determine, according to the received location update LAU message and/or the routing area update RAU message, that the UE enters the micro cell covered by the HNB signal.
所述测量报告获得单元 530, 可以包括：  The measurement report obtaining unit 530 may include:
控制消息发送子单元， 用于向所述 UE发送测量控制消息；  a control message sending subunit, configured to send a measurement control message to the UE;
测量报告接收子单元，用于接收所述 UE根据所述测量控制消息发送的测 量才艮告， 所述测量^艮告中， 包括所述 UE所处位置的宏小区信号质量信息。  And a measurement report receiving subunit, configured to receive a measurement report sent by the UE according to the measurement control message, where the measurement report includes macro cell signal quality information of a location where the UE is located.
所述测量报告获得单元 530获得的宏小区信号质量信息可以包括： 宏小区的接收信号码功率 RSCP— macro和宏小区的码片能量与干扰功率 密度 t匕 Ec/Io— macro。 参见图 6所示， 为所述功率调整单元 540的一种结构示意图， 可以包括： 第一判断子单元 541 ,用于判断 Ec/Io— macro是否小于预设的调整门限值； 功率调整子单元 544,用于在所述第一判断子单元 541的判断结果为是时， 降低所述 HNB的发射功率。 所述测量报告获得单元 530获得的测量报告中， 还可以包括宏小区的接 收信号码功率 RSCP— macro。图 7所示为功率调整单元 540的另一种结构示意 图， 在图 6所示基础上， 进一步包括：  The macro cell signal quality information obtained by the measurement report obtaining unit 530 may include: a received signal code power of the macro cell RSCP_macro and a chip power of the macro cell and an interference power density t匕Ec/Io_macro. Referring to FIG. 6, a schematic structural diagram of the power adjustment unit 540 may include: a first determining sub-unit 541, configured to determine whether an Ec/Io-mao is smaller than a preset adjustment threshold; The unit 544 is configured to reduce the transmit power of the HNB when the determination result of the first determining sub-unit 541 is YES. The measurement report obtained by the measurement report obtaining unit 530 may further include a received signal code power RSCP_ macro of the macro cell. FIG. 7 is a schematic diagram showing another structure of the power adjustment unit 540. Based on the embodiment shown in FIG. 6, the method further includes:
第二判断子单元 542, 用于在所述第一判断子单元 541进行判断之前， 根 据 RSCP— macro, 判断所述 UE是否处于宏小区基站覆盖盲区； 如果否， 则触 发所述第一判断子单元 541进一步判断 Ec/Io— macro是否小于预设的调整门限 值。 应用图 7所示的功率调整单元， 通过对宏小区的信号质量信息进行分析， 在确定 UE处于宏小区基站覆盖盲区、 以及存在同频干扰的情况下， 对 HNB 的发射功率进行相应调整， 从而降低 HNB对宏小区的干扰。 a second determining sub-unit 542, configured to determine, according to the RSCP_macro, whether the UE is in a macro-cell base station coverage dead zone before the first determining sub-unit 541 performs the determination; if not, triggering the first determining sub- Unit 541 further determines if the Ec/Io-macro is less than a preset adjustment threshold. Applying the power adjustment unit shown in FIG. 7 to analyze the signal quality information of the macro cell, and determining that the UE is in the coverage area of the macro cell base station and the same frequency interference, the transmission power of the HNB is adjusted accordingly, thereby Reduce the interference of the HNB to the macro cell.
所述测量报告获得单元 530获得的测量报告中，还可以包括所述 UE所处 位置的微小区的信号质量信息， 该信息可以是 HNB 的接收信号码功率 RSCP— micro。 图 8所示为功率调整单元 540的另一种结构示意图， 在图 7所 示基础上， 进一步包括：  The measurement report obtained by the measurement report obtaining unit 530 may further include signal quality information of the micro cell of the location where the UE is located, and the information may be the received signal code power RSCP_micro of the HNB. FIG. 8 is a schematic diagram showing another structure of the power adjustment unit 540. Based on the diagram shown in FIG. 7, the method further includes:
第三判断子单元 543 ,用于在所述第一判断子单元 541的判断结果为是之 后、 所述功率调整子单元 544 降低 HNB 的发射功率之前， 根据所述 RSCP— micro计算得到所述 HNB到所述 UE的路径损耗 PL; 判断所述 PL是 否小于 HNB的边界路径损耗门限值 PL— th; 如果是， 则触发所述功率调整子 单元 544降低所述 HNB的发射功率。  a third determining sub-unit 543, configured to: after the determining result of the first determining sub-unit 541 is YES, before the power adjusting sub-unit 544 decreases the transmit power of the HNB, calculate the HNB according to the RSCP-micro a path loss PL to the UE; determining whether the PL is smaller than a boundary path loss threshold PL_th of the HNB; if yes, triggering the power adjustment sub-unit 544 to decrease a transmit power of the HNB.
其中， 所述功率调整子单元 544对 HNB的发射功率的最大降低幅度可以 为 PL-PL— th。 所述功率调整子单元 544可以以小于 （PL-PL— th ) 的步长值， 逐步降低 HNB的发射功率。  The maximum reduction of the transmit power of the HNB by the power adjustment sub-unit 544 may be PL-PL-th. The power adjustment sub-unit 544 can step down the transmit power of the HNB with a step value less than (PL-PL-th).
应用图 8 所示的功率调整单元， 才艮据宏小区及微小区的信号质量的相互 关系， 对发射功率进行调整， 可以在降低 HNB对宏小区的干扰的同时， 保证 HNB的覆盖效果。  Applying the power adjustment unit shown in Figure 8 to adjust the transmit power according to the relationship between the signal quality of the macro cell and the micro cell, the HNB coverage effect can be ensured while reducing the interference of the HNB to the macro cell.
本发明实施例所提供的家庭基站功率控制装置， 可以是 HNB, 也可以内 置于 HNB中， 还也可以是独立于 HNB的功能实体。 针对家庭基站功率控制 装置独立于 HNB的情况， 本发明实施例还提供一种家庭基站功率控制***， 参见图 9所示，该***包括家庭基站 910和家庭基站功率控制装置 920。其中， 所述家庭基站功率控制装置可以与前述的家庭基站功率控制装置相同， 这里 不再重复说明。  The home base station power control apparatus provided by the embodiment of the present invention may be an HNB, or may be embedded in the HNB, or may be a functional entity independent of the HNB. For the case where the home base station power control device is independent of the HNB, the embodiment of the present invention further provides a home base station power control system. Referring to FIG. 9, the system includes a home base station 910 and a home base station power control device 920. The home base station power control apparatus may be the same as the foregoing home base station power control apparatus, and the description thereof will not be repeated here.
对于装置或***实施例而言， 由于其基本相应于方法实施例， 所以相关 之处参见方法实施例的部分说明即可。 以上所描述的装置或***实施例仅仅 是示意性的， 其中所述作为分离部件说明的单元可以是或者也可以不是物理 上分开的， 作为单元显示的部件可以是或者也可以不是物理单元， 即可以位 于一个地方， 或者也可以分布到多个网络单元上。 可以根据实际的需要选择 其中的部分或者全部模块来实现本实施例方案的目的。 本领域普通技术人员 在不付出创造性劳动的情况下， 即可以理解并实施。 For a device or system embodiment, since it basically corresponds to a method embodiment, reference may be made to a part of the description of the method embodiment. The apparatus or system embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie It can be located in one place, or it can be distributed to multiple network units. Can be selected according to actual needs Some or all of the modules implement the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.
在本申请所提供的几个实施例中， 应该理解到， 所揭露的***， 装置和 方法， 在没有超过本申请的精神和范围内， 可以通过其他的方式实现。 当前 的实施例只是一种示范性的例子， 不应该作为限制， 所给出的具体内容不应 该限制本申请的目的。 例如， 所述单元或子单元的划分， 仅仅为一种逻辑功 能划分， 实际实现时可以有另外的划分方式， 例如多个单元或多个子单元结 合一起。 另外， 多个单元可以或组件可以结合或者可以集成到另一个***， 或一些特征可以忽略， 或不执行。  In the several embodiments provided herein, it is to be understood that the disclosed systems, devices, and methods may be implemented in other ways without departing from the spirit and scope of the application. The present embodiments are merely exemplary, and should not be taken as limiting, and the specific details are not intended to limit the purpose of the application. For example, the division of the unit or subunit is only a logical function division, and the actual implementation may have another division manner, for example, a plurality of units or a plurality of subunits are combined. In addition, multiple units may or may be combined or integrated into another system, or some features may be omitted or not implemented.
另外， 所描述***， 装置和方法以及不同实施例的示意图， 在不超出本 申请的范围内， 可以与其它***， 模块， 技术或方法结合或集成。 另一点， 所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接 口， 装置或单元的间接耦合或通信连接， 可以是电性， 机械或其它的形式。  In addition, the described systems, apparatus, and methods, as well as the schematic diagrams of various embodiments, may be combined or integrated with other systems, modules, techniques or methods without departing from the scope of the present application. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
以上所述仅是本发明的具体实施方式， 应当指出， 对于本技术领域的普 通技术人员来说， 在不脱离本发明原理的前提下， 还可以做出若干改进和润 饰， 这些改进和润饰也应视为本发明的保护范围。  The above is only a specific embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

权利要求书 Claim
1、 一种家庭基站功率控制方法， 应用于包括宏小区和微小区的通讯网络 中， 其特征在于， 所述方法包括：  A method for controlling a home base station power, which is applied to a communication network including a macro cell and a micro cell, wherein the method includes:
确定有用户设备 UE进入家庭基站 HNB信号所覆盖的微小区；  Determining that the user equipment UE enters the micro cell covered by the HNB signal of the home base station;
确定所述 UE不具有接入所述 HNB的权限；  Determining that the UE does not have the right to access the HNB;
获得所述 UE的测量报告，所述测量报告中包括所述 UE所处位置的宏小 区信号质量信息；  Obtaining a measurement report of the UE, where the measurement report includes macro cell signal quality information of a location where the UE is located;
根据所述宏小区信号质量信息确定所述微小区的信号对于所述宏小区的 信号存在同频干扰， 降低所述 HNB的发射功率。  Determining, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with the signal of the macro cell, and reduces the transmit power of the HNB.
2、 根据权利要求 1所述的方法， 其特征在于， 所述确定有用户设备 UE 进入 HNB信号所覆盖的微小区， 包括： The method according to claim 1, wherein the determining that the user equipment UE enters the micro cell covered by the HNB signal includes:
根据接收到的位置更新 LAU 消息和 /或路由区更新 RAU 消息， 确定有 UE进入所述 HNB信号所覆盖的微小区。  According to the received location update LAU message and/or the routing area update RAU message, it is determined that the UE enters the micro cell covered by the HNB signal.
3、 根据权利要求 1所述的方法， 其特征在于， 所述获得 UE发送的测量 报告， 包括： The method according to claim 1, wherein the obtaining the measurement report sent by the UE comprises:
向所述 UE发送测量控制消息；  Sending a measurement control message to the UE;
接收所述 UE根据所述测量控制消息发送的测量报告。  Receiving a measurement report sent by the UE according to the measurement control message.
4、 根据权利要求 1所述的方法， 其特征在于， 4. The method of claim 1 wherein:
所述宏小区的信号质量信息包括： 宏小区的码片能量与干扰功率密度比 Ec/Io_macro;  The signal quality information of the macro cell includes: a chip energy and an interference power density ratio of the macro cell Ec/Io_macro;
所述^ ^艮据宏小区的信号质量信息确定所述微小区的信号对于所述宏小区 的信号存在同频干扰， 包括： 判断 Ec/Io— macro是否小于预设的调整门限值； 如果是， 则确定所述微小区的信号对于所述宏小区的信号存在同频干扰。  Determining, according to the signal quality information of the macro cell, that the signal of the micro cell has co-channel interference with the signal of the macro cell, including: determining whether the Ec/Io-mac is smaller than a preset adjustment threshold; If yes, it is determined that the signal of the micro cell has co-channel interference with the signal of the macro cell.
5、 根据权利要求 4所述的方法， 其特征在于， 5. The method of claim 4, wherein
所述宏小区的信号质量信息还包括： 宏小区的接收信号码功率 RSCP— macro; The signal quality information of the macro cell further includes: a received signal code power of the macro cell RSCP- macro;
在判断 Ec/Io— macro 是否小于预设的调整门限值之前， 还包括： 根据 RSCP— macro, 判断所述 UE是否处于宏小区基站覆盖盲区； 如果否， 则进一 步判断 Ec/Io— macro是否小于预设的调整门限值。  Before determining whether the Ec/Io-macro is smaller than the preset adjustment threshold, the method further includes: determining, according to the RSCP_macro, whether the UE is in a macrocell base station coverage dead zone; if not, further determining whether the Ec/Io_macro is Less than the preset adjustment threshold.
6、 根据权利要求 4或 5所述的方法， 其特征在于， 6. A method according to claim 4 or 5, characterized in that
所述测量报告中还包括所述 UE 所处位置的微小区信号质量信息， 所述 UE 所处位置的微小区信号质量信息包括： 所述 HNB 的接收信号码功率 RSCP— micro;  The measurement report further includes the micro cell signal quality information of the location where the UE is located, and the micro cell signal quality information of the location where the UE is located includes: the received signal code power of the HNB, RSCP_micro;
在判断 Ec/Io— macro是否小于预设的调整门限值之后、 降低所述 HNB的 发射功率之前， 还包括：  Before determining whether the Ec/Io-mac is less than a preset adjustment threshold and lowering the transmit power of the HNB, the method further includes:
根据所述 RSCP— micro计算得到所述 HNB到所述 UE的路径损耗 PL; 判断所述 PL是否小于所述 HNB的边界路径损耗门限值 PLjh; 如果是， 则降低所述 HNB的发射功率。  Calculating, according to the RSCP-micro, a path loss PL of the HNB to the UE; determining whether the PL is smaller than a boundary path loss threshold PLjh of the HNB; if yes, reducing a transmit power of the HNB.
7、 根据权利要求 6所述的方法， 其特征在于， 7. The method of claim 6 wherein:
所述 HNB的发射功率的最大降低幅度为 PL-PL— th;  The maximum reduction of the transmission power of the HNB is PL-PL-th;
所述降低 HNB的发射功率， 具体包括： 以小于 （PL-PL— th ) 的步长值， 逐步降低 HNB的发射功率。  The reducing the transmit power of the HNB specifically includes: gradually reducing the transmit power of the HNB by a step value smaller than (PL-PL-th).
8、 一种家庭基站功率控制装置， 应用于包括宏小区和微小区的通讯网络 中， 其特征在于， 所述装置包括： A home base station power control apparatus, which is applied to a communication network including a macro cell and a micro cell, wherein the device includes:
UE检测单元， 用于确定有用户设备 UE进入家庭基站 HNB信号所覆盖 的 小区；  a UE detecting unit, configured to determine that a user equipment UE enters a cell covered by a home base station HNB signal;
UE鉴权单元， 用于确定所述 UE不具有接入所述 HNB的权限； 测量报告获得单元，用于获得所述 UE的测量报告， 所述测量报告中包括 所述 UE所处位置的宏小区信号质量信息；  a UE authentication unit, configured to determine that the UE does not have the right to access the HNB, and a measurement report obtaining unit, configured to obtain a measurement report of the UE, where the measurement report includes a macro of a location where the UE is located Cell signal quality information;
功率调整单元， 用于根据所述宏小区信号质量信息确定所述微小区的信 号对于宏小区的信号存在同频干扰， 降低所述 HNB的发射功率。 And a power adjustment unit, configured to determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with a signal of the macro cell, and reduce a transmit power of the HNB.
9、 根据权利要求 8所述的装置， 其特征在于， 9. Apparatus according to claim 8 wherein:
所述 UE检测单元根据接收到的位置更新 LAU消息和 /或路由区更新 RAU 消息， 确定有 UE进入 HNB信号所覆盖的微小区。  The UE detecting unit determines, according to the received location update LAU message and/or the routing area update RAU message, that the UE enters the micro cell covered by the HNB signal.
10、 根据权利要求 9所述的装置， 其特征在于， 所述测量报告获得单元， 包括： The device according to claim 9, wherein the measurement report obtaining unit comprises:
控制消息发送子单元， 用于向所述 UE发送测量控制消息；  a control message sending subunit, configured to send a measurement control message to the UE;
测量报告接收子单元，用于接收所述 UE根据所述测量控制消息发送的测 量才艮告， 所述测量^艮告中包括所述 UE所处位置的宏小区信号质量信息。  And a measurement report receiving subunit, configured to receive a measurement report sent by the UE according to the measurement control message, where the measurement report includes macro cell signal quality information of a location where the UE is located.
11、 根据权利要求 8所述的装置， 其特征在于， 11. Apparatus according to claim 8 wherein:
所述测量报告获得单元获得的宏小区信号质量信息包括：  The macro cell signal quality information obtained by the measurement report obtaining unit includes:
宏小区的接收信号码功率 RSCP— macro和宏小区的码片能量与干扰功率 密度比 Ec/Io— macro;  The received signal code power of the macro cell RSCP—macro and the macro cell's chip energy and interference power density ratio Ec/Io—macro;
所述功率调整单元， 包括：  The power adjustment unit includes:
第一判断子单元， 用于判断 Ec/Io— macro是否小于预设的调整门限值； 功率调整子单元， 用于在所述第一判断子单元的判断结果为是时， 降低 所述 HNB的发射功率。  a first determining sub-unit, configured to determine whether the Ec/Io-ma is smaller than a preset adjustment threshold; and a power adjustment sub-unit, configured to: when the judgment result of the first determining sub-unit is YES, lower the HNB Transmit power.
12、 根据权利要求 11所述的装置， 其特征在于， 12. Apparatus according to claim 11 wherein:
所述宏小区的信号质量信息还包括： 宏小区的接收信号码功率 RSCP— macro;  The signal quality information of the macro cell further includes: a received signal code power of the macro cell RSCP_ macro;
所述装置还包括第二判断子单元， 用于在所述第一判断子单元进行判断 之前， 根据 RSCP— macro, 判断所述 UE是否处于宏小区基站覆盖盲区； 如果 否，则触发所述第一判断子单元进一步判断 Ec/Io— macro是否小于预设的调整 门限值。  The device further includes a second determining subunit, configured to determine, according to the RSCP_macro, whether the UE is in a macrocell base station coverage dead zone according to the RSCP_macro; if not, triggering the A determining sub-unit further determines whether the Ec/Io-macro is less than a preset adjustment threshold.
13、 根据权利要求 11或 12所述的装置， 其特征在于， 所述测量报告中还包括所述 UE 所处位置的微小区信号质量信息， 所述 UE 所处位置的微小区信号质量信息包括： HNB 的接收信号码功率 RSCP micro; 13. Apparatus according to claim 11 or 12, characterized in that The measurement report further includes micro cell signal quality information of the location where the UE is located, and the micro cell signal quality information of the location where the UE is located includes: a received signal code power of the HNB, RSCP micro;
所述装置还包括第三判断子单元， 用于在所述第一判断子单元的判断结 果为是之后、 所述功率调整子单元降低 HNB 的发射功率之前， 根据所述 RSCP— micro计算得到所述 HNB到所述 UE的路径损耗 PL; 判断所述 PL是 否小于 HNB的边界路径损耗门限值 PL— th; 如果是， 则触发所述功率调整子 单元降低所述 HNB的发射功率。  The device further includes a third determining sub-unit, configured to calculate, according to the RSCP-micro, after the determining result of the first determining sub-unit is YES, before the power adjusting sub-unit decreases the transmitting power of the HNB Determining, by the HNB, a path loss PL of the UE; determining whether the PL is smaller than a boundary path loss threshold PL_th of the HNB; if yes, triggering the power adjustment sub-unit to decrease a transmit power of the HNB.
14、 根据权利要求 13所述的装置， 其特征在于， 所述功率调整子单元对 HNB 的发射功率的最大降低幅度为 PL-PL— th, 所述功率调整子单元以小于 ( PL-PL— th ) 的步长值， 逐步降低 HNB的发射功率。 The device according to claim 13, wherein the power adjustment sub-unit has a maximum reduction amplitude of the transmission power of the HNB is PL-PL-th, and the power adjustment sub-unit is smaller than (PL-PL- The step value of th ) gradually reduces the transmit power of the HNB.
15、 一种家庭基站***， 其特征在于， 包括家庭基站以及如权利要求 7至 14任一项所述的家庭基站功率控制装置。 A home base station system, comprising: a home base station and the home base station power control apparatus according to any one of claims 7 to 14.
PCT/CN2011/075047 2010-07-15 2011-05-31 Power control method, device and system for home base station WO2011137856A1 (en)

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