WO2013134946A1 - 操作载波的选择方法、微基站及宏基站 - Google Patents

操作载波的选择方法、微基站及宏基站 Download PDF

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Publication number
WO2013134946A1
WO2013134946A1 PCT/CN2012/072424 CN2012072424W WO2013134946A1 WO 2013134946 A1 WO2013134946 A1 WO 2013134946A1 CN 2012072424 W CN2012072424 W CN 2012072424W WO 2013134946 A1 WO2013134946 A1 WO 2013134946A1
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Prior art keywords
base station
carrier
micro base
subframe
micro
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PCT/CN2012/072424
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English (en)
French (fr)
Inventor
吴联海
李兆俊
汪巍崴
常宁娟
徐海博
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to PCT/CN2012/072424 priority Critical patent/WO2013134946A1/zh
Priority to CN201280069036.4A priority patent/CN104094622B/zh
Publication of WO2013134946A1 publication Critical patent/WO2013134946A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10Dynamic resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for selecting an operating carrier, a micro base station, and a macro base station.
  • Background Art In order to further improve the capacity of a system, the advanced long-term evolution scheme of the next-generation wireless communication system LTE-A introduces a Heterogeneous Network.
  • the LTE-A system may be composed of a Macro Cell, a Pico Cell, a Femto Cell, a Remote Radio Head (RRH), a Relay, and the like.
  • RRH Remote Radio Head
  • a simple heterogeneous network scenario is considered, that is, a scenario with only one pico and one macro base station.
  • a simple heterogeneous network scenario only the time domain solution is considered to solve the interference problem.
  • FIG. 1 is a schematic diagram showing interference in a heterogeneous network.
  • a typical macro cell + micro cell herein, the term "micro cell” term may include a femto cell, a pico cell, etc.
  • the user equipment receiving the micro cell service at the edge of the micro cell is interfered by the downlink signal from the macro cell.
  • the user equipment of the macro cell is also received from the micro device. The interference of the uplink signal of the user equipment of the area.
  • the embodiments of the present invention provide a method for selecting an operation carrier, a micro base station, and a macro base station.
  • the purpose is to avoid interference between multiple micro cells in a scenario where a micro cell is deployed at a high density.
  • a method for selecting an operation carrier includes:
  • the micro base station receives information of the neighboring cell including an almost empty subframe configuration
  • a method for selecting an operation carrier includes:
  • the macro base station receives information of the neighboring cell including the operation carrier
  • the macro base station configures the micro base station with an almost null subframe mode on the other operational carriers.
  • a method for selecting an operation carrier includes:
  • the operation and maintenance network element sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell;
  • the operation and maintenance network element transmits information indicating strong interference between the micro cells in the coverage of the macro base station to the macro base station.
  • a micro base station where the micro base station includes:
  • An information receiving unit which receives information of a neighboring cell that includes an almost empty subframe configuration;
  • the carrier determining unit determines whether it is possible to avoid selecting the same operating carrier as the neighboring cell that interferes with each other;
  • the carrier operation unit does not use the operation carrier when the judgment result of the carrier determination unit is that the selection of the operation carrier can be avoided.
  • a macro base station includes:
  • An information receiving unit which receives information of an adjacent cell including an operation carrier
  • a carrier determining unit determining whether the micro base station has another operating carrier
  • a subframe configuration unit configured to configure an almost null subframe mode for the micro base station on the other operation carrier when the micro base station has another operation carrier.
  • an operation and maintenance network element is provided, where the operation and maintenance network element includes:
  • the first sending unit sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell;
  • the second sending unit sends, to the macro base station, information indicating that there is strong interference between the micro cells in the coverage of the macro base station.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform a selection method of an operation carrier as described above in the base station.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a selection method of an operation carrier as described above in a base station.
  • the beneficial effects of the embodiments of the present invention are that, by using the micro base station to determine whether it is possible to avoid selecting the same operational carrier as the neighboring cells that interfere with each other, interference between the plurality of micro cells can be avoided in a scene where the micro cells are deployed in a high density.
  • Figure 1 is a schematic diagram showing interference in a heterogeneous network
  • FIG. 2 is a schematic diagram of deploying multiple micro cells in a macro cell
  • Embodiment 3 is a flow chart of a selection method of Embodiment 1 of the present invention.
  • FIG. 5 is still another flowchart of the selection method of Embodiment 1 of the present invention.
  • FIG. 6 is a schematic structural diagram of a micro base station according to Embodiment 1 of the present invention.
  • Figure 7 is a block diagram showing still another configuration of a micro base station according to Embodiment 1 of the present invention.
  • Figure 8 is a flowchart of a selection method of Embodiment 2 of the present invention.
  • FIG. 9 is still another flowchart of the selection method of Embodiment 2 of the present invention.
  • Figure 10 is still another flowchart of the selection method of Embodiment 2 of the present invention.
  • Figure 11 is a block diagram showing the structure of a macro base station according to Embodiment 2 of the present invention.
  • Figure 12 is a block diagram showing the structure of a macro base station according to Embodiment 2 of the present invention.
  • Figure 13 is a flowchart of a selection method of Embodiment 3 of the present invention.
  • FIG. 14 is a schematic structural diagram of an operation and maintenance network element according to Embodiment 3 of the present invention. detailed description
  • FIG. 2 is a schematic diagram of deploying multiple micro cells in a macro cell. As shown in Figure 2, there are six microcells from Picol to Pico6 within the coverage of the macrocell. Among them, if picol and pico2 use the same almost blank subframe (ABS, almost blank subframe), strong interference will occur in the overlapping area.
  • ABS almost blank subframe
  • ABS mode 1 and ABS mode 2 are respectively configured for picol and pico2, the intersection of the two ABS modes will not be used. Therefore, in this scenario, pico should avoid mutual interference using the same ABS mode.
  • pico and macro base stations should reconfigure the neighbor cell measurement set to the UE.
  • the embodiment of the invention provides a method for selecting an operation carrier, which is applied to a micro base station side.
  • 3 is a flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 3, the selection method includes: Step 301: A micro base station receives information of a neighboring cell that includes an almost null subframe configuration. Step 302: Determining, by the base station, whether to select the same operational carrier as the neighboring cell that interferes with each other;
  • Step 303 If the result of the determination is that the operation carrier can be avoided, the micro base station does not use the operation carrier.
  • the operation and maintenance network element may send information indicating that there is strong interference between the micro base station and the neighboring cell to the micro cell, and notify the neighboring cell in the micro cell which has strong interference;
  • the OAM can also be configured with an operating carrier for the base station.
  • the micro base station can receive information of the neighboring cell through the X2 interface, where the information includes at least configuration information of the ABS of the neighboring cell.
  • the ABS configuration information can pass through the following two cells of the X2 interface (IE, Obtained in information element ): ABS information IE and ABS status IE. Indicate the ABS configuration information through the ABS information IE, or indicate through the ABS status IE
  • the ABS information IE may be added with a 1-bit indicator to indicate whether the ABS information IE is used to configure the ABS resource, or to inform the neighboring base station of the ABS information that is being used by the neighboring base station; and the measurement subset may be added to the ABS status IE. IE. After the micro base station learns the ABS status IE from the neighboring cell, it can know the ABS information of the neighboring cell, and can configure the measurement set for the terminal according to the measurement subset IE.
  • the micro base station may not use the operational carrier after determining that it is possible to avoid selecting the same operational carrier as the neighboring cell that interferes with each other. Therefore, no interference occurs between the micro base station and neighboring cells that interfere with each other on the operation carrier, and strong interference between the micro cells can be avoided.
  • FIG. 4 is still another flowchart of the selection method according to the embodiment of the present invention. As shown in FIG. 4, the selection method includes:
  • Step 401 The micro base station receives information of a neighboring cell that includes an almost null subframe configuration.
  • Step 402 The micro base station determines whether it is possible to avoid selecting the same operational carrier as the neighboring cell that interferes with each other. When the determination result is yes, step 403 is performed, and when the determination result is no, step 404 is performed.
  • Step 403 The micro base station does not use the operation carrier.
  • Step 404 The micro base station determines whether it is possible to avoid applying an almost empty subframe on the operation carrier. When the determination result is yes, step 405 is performed, and when the determination result is no, step 406 is performed.
  • Step 405 The micro base station applies for almost blank subframes on other operating carriers.
  • Step 406 The micro base station applies, on the operation carrier, a nearly blank subframe mode different from the neighboring cells that interfere with each other.
  • the micro base station configures the neighboring cell that interferes with each other on the operation carrier for the associated user equipment. Measurement set.
  • FIG. 5 is still another flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 5, the selection method includes: Step 501, Pico2 is started;
  • Step 502 The operation and maintenance network element is configured.
  • Step 503 Pico2 receives information through the X2 interface
  • Step 504 Pico2 determines whether to avoid selection / 1; when it can be avoided, step 505, when it can not be avoided, step 506;
  • Step 505 Pico2 is not used
  • Step 506 Pico2 determines whether it is possible to avoid applying the almost empty subframe mode on/on; when the determination result is yes, step 507 is performed, and when the determination result is no, step 508 is performed;
  • Step 507 Pico2 applies for almost blank subframe mode on other operating carriers (for example, / 2 );
  • Step 508 Pico2 applies for other almost empty sub-frame mode on _! (for example, ABS mode)
  • Step 509 Pico2 configures a measurement subset on Picol for the user equipment to which it belongs.
  • FIG. 6 is a schematic diagram of a configuration of a micro base station according to an embodiment of the present invention.
  • the micro base station 600 includes: an information receiving unit 601, a carrier determining unit 602, and a carrier operating unit 603; Refer to the prior art, and details are not described herein again.
  • the information receiving unit 601 receives the information of the neighboring cell including the configuration of the almost empty subframe; the carrier determining unit 602 determines whether it is possible to avoid selecting the same operating carrier as the neighboring cell that interferes with each other; the carrier operating unit 603 is in the carrier determining unit 602. The result of the judgment is that the operation carrier is not used when the operation carrier can be avoided.
  • FIG. 7 is still another schematic diagram of a configuration of a micro base station according to an embodiment of the present invention.
  • the micro base station 700 includes: an information receiving unit 701, a carrier determining unit 702, and a carrier operating unit 703.
  • the micro base station 700 may further include: a subframe determining unit 704 and a subframe applying unit 705; wherein the subframe determining unit 704 determines when the determining result of the carrier determining unit 702 is that the operating carrier cannot be avoided. Is it possible to avoid applying on the operating carrier? The almost blank subframe; the subframe requesting unit 705, when the judgment result of the subframe judging unit 704 is that it is possible to avoid applying for an almost null subframe on the operation carrier, applies an almost null subframe on another operation carrier.
  • subframe application unit 705 may be further configured to: when the determination result of the subframe determination unit 704 is that the application of the almost empty subframe on the operation carrier cannot be avoided, apply on the operation carrier to be different from the adjacent cell that interferes with each other. Almost empty sub-frame mode.
  • the micro base station 700 may further include: a measurement set configuration unit 706 configured to configure, by the associated user equipment, a measurement set of the neighboring cells that interfere with each other on the operational carrier.
  • a measurement set configuration unit 706 configured to configure, by the associated user equipment, a measurement set of the neighboring cells that interfere with each other on the operational carrier.
  • the micro base station can determine whether it is possible to avoid selecting the same operational carrier as the neighboring cells that interfere with each other, and avoid interference between multiple micro cells in a scenario where the micro cell is deployed at a high density.
  • FIG. 8 is a flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 8, the selection method includes:
  • Step 801 A macro base station receives, by a neighboring cell, information including an operation carrier.
  • Step 802 The macro base station receives an almost null subframe request sent by the micro base station, where the almost empty subframe is applied on the same operational carrier as the neighboring cell that interferes with the micro base station;
  • Step 803 The macro base station determines whether the micro base station has other operating carriers.
  • Step 804 If the micro base station has other operational carriers, the macro base station configures the micro base station with an almost null subframe mode on other operational carriers.
  • the operation and maintenance network element OAM may send information indicating that there is strong interference between the micro cells in the coverage of the macro base station to the macro base station, and may notify the macro base station: which micro cells are in the coverage area interference.
  • the macro base station may further receive information of a neighboring cell through an X2 interface, where the information includes carrier selection information and the like.
  • FIG. 9 is still another flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 9, the selection method includes:
  • Step 901 The macro base station receives, by the neighboring cell, information including an operation carrier.
  • Step 902 The macro base station receives an almost null subframe request sent by the micro base station, where the almost empty subframe is applied to the same operational carrier of the neighboring cell that interferes with the micro base station;
  • Step 903 the macro base station determines whether the micro base station has other operating carriers; if the micro base station has other operating carriers, step 904 is performed; if the micro base station has no other operating carriers, step 905 is performed;
  • Step 904 The macro base station configures the micro base station with an almost null subframe mode on the other operating carrier.
  • Step 905 The macro base station configures, on the operational carrier, an almost null subframe mode different from the mutually interfered neighboring cells for the micro base station.
  • the selecting method may further include: the macro base station configuring a neighbor cell measurement set for the user equipment to which it belongs. For example, for a certain operating carrier, if the macro base station has configured an ABS mode on the operational carrier, the macro base station will configure a neighboring cell measurement set for the associated UE; if the macro base station has configured two on the operational carrier For different ABS modes, the macro base station will configure two neighbor cell measurement sets for the UE to which it belongs.
  • FIG. 10 is still another flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 10, the selection method includes:
  • Step 1001 the base station starts
  • Step 1002 The operation and maintenance network element is configured.
  • Step 1003 The macro base station receives information through the X2 interface.
  • Step 1004 The macro base station receives an almost null subframe request of Pico2 on f.
  • Step 1005 the macro base station determines whether the Pico2 has an operation carrier different from _/! (for example, / 2 ); if yes, executing step 1006, if not, executing step 1007;
  • Step 1006 The macro base station configures an almost empty subframe mode for the Pico2 on the different operating carrier/ 2 ;
  • Step 1007 The macro base station configures another almost empty subframe mode for the Pico2 (for example) Such as ABS mode 2);
  • Step 1008 The macro base station configures a neighbor cell measurement set for the user equipment to which it belongs.
  • the embodiment of the present invention further provides a macro base station, and the same content as the above method is not described again.
  • 11 is a schematic diagram of a configuration of a macro base station according to an embodiment of the present invention.
  • the macro base station 1100 includes: an information receiving unit 1101, an application receiving unit 1102, a carrier determining unit 1103, and a subframe configuration unit 1104.
  • the 1100 reference may be made to the prior art, and details are not described herein again.
  • the information receiving unit 1101 receives the information including the operation carrier of the neighboring cell; the application receiving unit 1102 receives the almost empty subframe request sent by the micro base station, and the almost empty subframe applies for the same operation in the neighboring cell that interferes with the micro base station.
  • the carrier determining unit 1103 determines whether the micro base station has another operating carrier; the subframe configuration unit 1104 configures the micro base station with an almost empty subframe mode on the other operating carrier when the micro base station has other operating carriers. .
  • FIG. 12 is a schematic diagram of a configuration of a macro base station according to an embodiment of the present invention.
  • the macro base station 1200 includes: an information receiving unit 1201, an application receiving unit 1202, a carrier determining unit 1203, and a subframe configuration unit 1204.
  • subframe configuration unit 1204 is further configured to: when the micro base station has no other operation carrier, configure, on the operation carrier, an almost null subframe mode different from the mutually interfered neighboring cells on the operation carrier.
  • the macro base station 1200 may further include: a measurement set configuration unit 1205, and the measurement set configuration unit 1205 configures a neighbor cell measurement set for the associated user equipment.
  • the macro base station configures the almost empty subframe mode on the other operating carriers; after determining that the micro base station has no other operational carriers, the carrier is operating. A different almost empty subframe mode is configured for the micro base station. Interference between multiple microcells can be avoided in a scenario where microcells are deployed at high density.
  • FIG. 13 is a flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 13, the selection method includes: Step 1301: The operation and maintenance network element sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell.
  • Step 1302 The operation and maintenance network element sends, to the macro base station, information indicating that there is strong interference between the micro cells in the coverage of the macro base station.
  • the OAM can not only configure the operating carrier for the base station, but also notify the micro base station: which neighboring cells have strong interference with the micro base station; and can notify the macro base station: the micro cell within the coverage of the macro base station Which microcells interfere with each other.
  • FIG. 14 is a schematic structural diagram of an operation and maintenance network element according to an embodiment of the present invention.
  • the operation and maintenance network element 1400 includes: a first sending unit 1401 and a second sending unit 1402; For part, reference may be made to the prior art, and details are not described herein again.
  • the first sending unit 1401 sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell; the second sending unit 1402 sends a strong indication to the macro base station that the micro area within the coverage of the macro base station is strong. Interference information.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform a selection method of an operation carrier as described above in the base station.
  • Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a selection method of an operation carrier as described above in a base station.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or a step.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more combinations of energy blocks can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with DSP communications, or any other This configuration.

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Abstract

本发明实施例提供一种操作载波的选择方法、微基站及宏基站。所述选择方法包括:微基站接收相邻小区的包括几乎空子帧配置的信息;判断是否能够避免选择与相互干扰的相邻小区相同的操作载波;若判断结果为能够避免选择所述操作载波,所述微基站不使用所述操作载波。通过本发明实施例,可以在高密度部署微小区的场景下,避免多个微小区之间的干扰。

Description

操作载波的选择方法、 微基站及宏基站 技术领域
本发明涉及一种通信领域, 特别涉及一种操作载波的选择方法、 微 基站及宏基站。 背景技术 为了进一歩提高系统的容量, 下一代无线通信系统高级长期演进方 案 LTE-A引入了异构网络( Heterogeneous Network )。 LTE-A系统可以由 宏小区 (Macro Cell)、 微微小区 (Pico Cell)、 毫微微小区 (Femto Cell)、 远端无线头 (RRH)、 中继器 (Relay) 等组成。 通过部署新的无线节点, 该方案不仅提高了系统的容量, 而且为特殊区域的用户提供更好的服务, 优化了系统性能。
在现有的方案中, 更多考虑了简单的异构网场景, 即只有一个 pico 和一个宏基站的场景, 在简单异构网场景下, 仅考虑时域方案解决干扰 问题。
图 1是示意性示出了异构网络中干扰的示意图。 如图 1所示, 在典 型的宏小区 +微小区 (在本文中, 该 "微小区 "术语可以包括毫微微小 区、 微微小区等) 的异构网络中, 如图 1 中左侧的虚箭头所示, 处于微 小区边缘的接受微小区服务的用户设备受到来自宏小区的下行信号干 扰, 另一方面, 如图 1 中右侧的虚箭头所示, 宏小区的用户设备也受到 了来自微小区的用户设备的上行信号的干扰。
但是, 随着业务需求量的增大, 仅考虑简单异构网部署是不够的, 需考虑高密度部署微小区的干扰场景, 在一个宏基站下需要布置多个微 基站以满足用户设备的业务需求。 高密度部署微小区的场景下, 某些微 小区之间产生强干扰将难以避免, 而目前的技术方案没有考虑到多个微 小区相互干扰问题。
应该注意, 上面对技术背景的介绍只是为了方便对本发明的技术方 案进行清楚、 完整的说明, 并方便本领域技术人员的理解而阐述的。 不 能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技 术方案为本领域技术人员所公知。 发明内容
本发明实施例提供一种操作载波的选择方法、 微基站及宏基站; 目 的在于在高密度部署微小区的场景下, 避免多个微小区之间的干扰。
根据本发明实施例的一个方面, 提供一种操作载波的选择方法, 所 述选择方法包括:
微基站接收相邻小区的包括几乎空子帧配置的信息;
判断是否能够避免选择与相互干扰的相邻小区相同的操作载波; 若判断结果为能够避免选择所述操作载波, 所述微基站不使用所述 操作载波。
根据本发明实施例的又一个方面, 提供一种操作载波的选择方法, 所述选择方法包括:
宏基站接收相邻小区的包括操作载波的信息;
接收微基站发送的几乎空子帧申请, 所述几乎空子帧申请在与所述 微基站相互干扰的相邻小区相同的操作载波上;
判断所述微基站是否有其他的操作载波;
若所述微基站有其他的操作载波, 则所述宏基站在所述其他的操作 载波上为所述微基站配置几乎空子帧模式。
根据本发明实施例的又一个方面, 提供一种操作载波的选择方法, 所述选择方法包括:
操作维护网元向微基站发送标示所述微基站与相邻小区之间存在强 干扰的信息;
操作维护网元向宏基站发送标示所述宏基站覆盖范围内的微小区之 间存在强干扰的信息。
根据本发明实施例的又一个方面, 提供一种微基站, 所述微基站包 括:
信息接收单元, 接收相邻小区的包括几乎空子帧配置的信息; 载波判断单元, 判断是否能够避免选择与相互干扰的相邻小区相同 的操作载波;
载波操作单元, 在所述载波判断单元的判断结果为能够避免选择所 述操作载波时, 不使用所述操作载波。
根据本发明实施例的又一个方面, 提供一种宏基站, 所述宏基站包 括:
信息接收单元, 接收相邻小区的包括操作载波的信息;
申请接收单元, 接收微基站发送的几乎空子帧申请, 所述几乎空子 帧申请在与所述微基站相互干扰的相邻小区相同的操作载波上;
载波判断单元, 判断所述微基站是否有其他的操作载波;
子帧配置单元, 在所述微基站有其他的操作载波时, 在所述其他的 操作载波上为所述微基站配置几乎空子帧模式。
根据本发明实施例的又一个方面, 提供一种操作维护网元, 所述操 作维护网元包括:
第一发送单元, 向微基站发送标示所述微基站与相邻小区之间存在 强干扰的信息;
第二发送单元, 向宏基站发送标示所述宏基站覆盖范围内的微小区 之间存在强干扰的信息。
根据本发明实施例的又一个方面, 提供一种计算机可读程序, 其中 当在基站中执行所述程序时, 所述程序使得计算机在所述基站中执行如 上所述的操作载波的选择方法。
根据本发明实施例的又一个方面, 提供一种存储有计算机可读程序 的存储介质, 其中所述计算机可读程序使得计算机在基站中执行如上所 述的操作载波的选择方法。
本发明实施例的有益效果在于, 通过微基站判断是否能够避免选择 与相互干扰的相邻小区相同的操作载波, 可以在高密度部署微小区的场 景下, 避免多个微小区之间的干扰。
参照后文的说明和附图, 详细公开了本发明的特定实施方式, 指明 了本发明的原理可以被采用的方式。 应该理解, 本发明的实施方式在范 围上并不因此而受到限制。 在所附权利要求的精神和条款的范围内, 本 发明的实施方式包括许多改变、 修改和等同。
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在 一个或更多个其它实施方式中使用, 与其它实施方式中的特征相组合, 或替代其它实施方式中的特征。
应该强调, 术语"包括 /包含"在本文使用时指特征、 整件、 歩骤或组 件的存在, 但并不排除一个或更多个其它特征、 整件、 歩骤或组件的存 在或附加。 附图说明
参照以下的附图可以更好地理解本发明的很多方面。 附图中的部件 不是成比例绘制的, 而只是为了示出本发明的原理。 为了便于示出和描 述本发明的一些部分, 附图中对应部分可能被放大或縮小。
在本发明的一个附图或一种实施方式中描述的元素和特征可以与一 个或更多个其它附图或实施方式中示出的元素和特征相结合。 此外, 在 附图中, 类似的标号表示几个附图中对应的部件, 并可用于指示多于一 种实施方式中使用的对应部件。
图 1是示意性示出了异构网络中干扰的示意图;
图 2是宏小区下部署多个微小区的示意图;
图 3是本发明实施例 1的选择方法的一流程图;
图 4是本发明实施例 1的选择方法的又一流程图;
图 5是本发明实施例 1的选择方法的又一流程图;
图 6是本发明实施例 1的微基站的一构成示意图;
图 7是本发明实施例 1的微基站的又一构成示意图;
图 8是本发明实施例 2的选择方法的一流程图;
图 9是本发明实施例 2的选择方法的又一流程图;
图 10是本发明实施例 2的选择方法的又一流程图;
图 11是本发明实施例 2的宏基站的一构成示意图;
图 12是本发明实施例 2的宏基站的一构成示意图;
图 13是本发明实施例 3的选择方法的一流程图;
图 14是本发明实施例 3的操作维护网元的一构成示意图。 具体实施方式
参照附图, 通过下面的说明书, 本发明的前述以及其它特征将变得 明显。 在说明书和附图中, 具体公开了本发明的特定实施方式, 其表明 了其中可以采用本发明的原则的部分实施方式, 应了解的是, 本发明不 限于所描述的实施方式, 相反, 本发明包括落入所附权利要求的范围内 的全部修改、 变型以及等同物。
图 2是宏小区下部署多个微小区的示意图。 如图 2所述, 在该宏小 区的覆盖范围内, 存在 Picol至 Pico6共六个微小区。 其中, 如果 picol 和 pico2使用相同的几乎空子帧(ABS, almost blank subframe) ,在重叠区 域将会产生强干扰。
也就是说,如果 ABS模式 1和 ABS模式 2分别配置给 picol和 pico2, 这两个 ABS模式的交集将不能使用。 因此, 在这种场景下, 应避免相互 干扰的 pico使用相同 ABS模式。另外,如 picol和 pico2使用不同的 ABS, pico和宏基站应该给 UE重新配置邻小区测量集。
实施例 1
本发明实施例提供一种操作载波的选择方法, 应用于微基站侧。 图 3 是本发明实施例的选择方法的流程图, 如图 3所示, 所述选择方法包括: 歩骤 301, 微基站接收相邻小区的包括几乎空子帧配置的信息; 歩骤 302,微基站判断是否能够避免选择与相互干扰的相邻小区相同 的操作载波;
歩骤 303, 若判断结果为能够避免选择所述操作载波, 微基站不使用 该操作载波。
在本实施例中, 操作维护网元 (OAM, Operation and Maintenance) 可以向微小区发送标示该微基站与相邻小区之间存在强干扰的信息, 告 知微小区哪些相邻小区与其有强干扰; OAM 还可以为基站配置操作载 波, 可以参考现有技术, 此处不再赘述。
此外, 微基站可以通过 X2接口接收相邻小区的信息, 其中该信息至 少包括该相邻小区的 ABS的配置信息。
在本实施例中, ABS配置信息可以通过 X2接口的以下两种信元 (IE, information element ) 中获得: ABS information IE禾口 ABS status IE。 通过 ABS information IE指示 ABS配置的信息, 或者通过 ABS status IE指示
ABS配置的信息。
其中, 可以在 ABS information IE中增加一个 1比特指示量, 用于指 示该 ABS information IE是用于配置 ABS资源, 还是告知邻基站自身正 在使用的 ABS信息; 还可以在 ABS status IE中增加 measurement subset IE。微基站获知来自邻小区的 ABS status IE后,就可以知道邻小区的 ABS 信息, 并可根据 measurement subset IE为终端配置测量集。
在本实施例中, 微基站在判断能够避免选择与相互干扰的相邻小区 相同的操作载波之后, 可以不使用该操作载波。 由此在该操作载波上, 该微基站和相互干扰的相邻小区之间不会产生干扰, 可以避免微小区之 间的强干扰。
图 4是本发明实施例的选择方法的又一流程图, 如图 4所示, 所述 选择方法包括:
歩骤 401, 微基站接收相邻小区的包括几乎空子帧配置的信息。
歩骤 402,微基站判断是否能够避免选择与相互干扰的相邻小区相同 的操作载波; 在判断结果为是时执行歩骤 403, 在判断结果为否时执行歩 骤 404。
歩骤 403, 微基站不使用该操作载波。
歩骤 404, 微基站判断是否能够避免在该操作载波上申请几乎空子 帧; 在判断结果为是时执行歩骤 405, 在判断结果为否时执行歩骤 406。
歩骤 405, 微基站在其他的操作载波上申请几乎空子帧。
歩骤 406, 微基站在该操作载波上, 申请与相互干扰的相邻小区不同 的几乎空子帧模式。
在本实施例中, 如果该相互干扰的相邻小区已经在该操作载波上配 置了几乎空子帧模式, 则该微基站为所属的用户设备配置对该相互干扰 的相邻小区在该操作载波上的测量集。
以下以微基站 Pico2为例进行说明, 其中 Pico2和 Picol相互干扰, 并且 Picol 已经在操作载波 /1上配置了 ABS模式 1。 图 5是本发明实施 例的选择方法的又一流程图, 如图 5所示, 所述选择方法包括: 歩骤 501, Pico2启动;
歩骤 502, 操作维护网元进行配置;
歩骤 503, Pico2通过 X2接口接收信息;
歩骤 504, Pico2判断能否避免选择/ 1 ; 在能够避免时执行歩骤 505, 在不能够避免时执行歩骤 506;
歩骤 505, Pico2不使用 ;
歩骤 506, Pico2判断能否避免在/上申请几乎空子帧模式; 在判断 结果为是时执行歩骤 507, 在判断结果为否时执行歩骤 508;
歩骤 507, Pico2在其他的操作载波 (例如 /2) 上申请几乎空子帧模 式;
歩骤 508, Pico2在 _ !上申请其他的几乎空子帧模式(例如 ABS模式
2);
歩骤 509, Pico2对所属的用户设备配置对于 Picol 的 上的测量子 集。
值得注意的是, 以上仅以 Pico为例进行了说明, 但并不限于此, 可 以根据实际情况确定具体的结构。
本发明实施例还提供一种微基站, 与上述方法相同的内容不再赘述。 图 6是本发明实施例的微基站的一构成示意图, 如图 6所示, 该微基站 600包括: 信息接收单元 601、 载波判断单元 602和载波操作单元 603 ; 该微基站 600的其他部分可以参考现有技术, 此处不再赘述。
其中, 信息接收单元 601接收相邻小区的包括几乎空子帧配置的信 息; 载波判断单元 602判断是否能够避免选择与相互干扰的相邻小区相 同的操作载波; 载波操作单元 603在载波判断单元 602的判断结果为能 够避免选择操作载波时, 不使用该操作载波。
图 7是本发明实施例的微基站的又一构成示意图, 如图 7所示, 该 微基站 700包括: 信息接收单元 701、载波判断单元 702和载波操作单元 703
如图 7所示, 该微基站 700还可以包括: 子帧判断单元 704和子帧 申请单元 705 ; 其中, 子帧判断单元 704在载波判断单元 702的判断结果 为不能避免选择该操作载波时, 判断是否能够避免在该操作载波上申请 几乎空子帧; 子帧申请单元 705在子帧判断单元 704的判断结果为能够 避免在该操作载波上申请几乎空子帧时, 在其他的操作载波上申请几乎 空子帧。
进一歩地, 子帧申请单元 705还可以用于在子帧判断单元 704的判 断结果为不能避免在该操作载波上申请几乎空子帧时, 在该操作载波上 申请与相互干扰的相邻小区不同的几乎空子帧模式。
如图 7所示, 该微基站 700还可以包括: 测量集配置单元 706, 测量 集配置单元 706 为所属的用户设备配置对相互干扰的相邻小区在该操作 载波上的测量集。
由上述实施例可知, 通过微基站判断是否能够避免选择与相互干扰 的相邻小区相同的操作载波, 可以在高密度部署微小区的场景下, 避免 多个微小区之间的干扰。
实施例 2
本发明实施例提供一种操作载波的选择方法, 应用于宏基站侧。 图 8 是本发明实施例的选择方法的一流程图, 如图 8所示, 所述选择方法包 括:
歩骤 801, 宏基站接收相邻小区的包括操作载波的信息;
歩骤 802, 宏基站接收微基站发送的几乎空子帧申请, 该几乎空子帧 申请在与该微基站相互干扰的相邻小区相同的操作载波上;
歩骤 803, 宏基站判断该微基站是否有其他的操作载波;
歩骤 804, 若该微基站有其他的操作载波, 则宏基站在其他的操作载 波上为该微基站配置几乎空子帧模式。
在本实施例中,操作维护网元 OAM可以向宏基站发送标示该宏基站 覆盖范围内的微小区之间存在强干扰的信息, 可以告知宏基站: 在其覆 盖范围内哪些微小区之间相互干扰。
在本实施例中, 宏基站还可以通过 X2接口接收相邻小区的信息, 该 信息包含载波选择的信息等。
在本实施例中, 宏基站在判断微基站有其他的操作载波之后, 在其 他的操作载波上为该微基站配置几乎空子帧模式。 由此该微基站和相互 干扰的相邻小区之间不会产生干扰, 可以避免微小区之间的强干扰。 图 9是本发明实施例的选择方法的又一流程图, 如图 9所示, 所述 选择方法包括:
歩骤 901, 宏基站接收相邻小区的包括操作载波的信息;
歩骤 902, 宏基站接收微基站发送的几乎空子帧申请, 该几乎空子帧 申请在与该微基站相互干扰的相邻小区相同的操作载波上;
歩骤 903, 宏基站判断该微基站是否有其他的操作载波; 若该微基站 有其他的操作载波, 则执行歩骤 904; 若该微基站没有其他的操作载波, 则执行歩骤 905;
歩骤 904,宏基站在该其他的操作载波上为该微基站配置几乎空子帧 模式;
歩骤 905,宏基站在该操作载波上为该微基站配置与相互干扰的相邻 小区不同的几乎空子帧模式。
在本实施例中, 该选择方法还可以包括: 宏基站为所属的用户设备 配置相邻小区测量集。例如, 对于某一操作载波, 如果宏基站已在该操作 载波上配置了一个 ABS模式, 则宏基站将为所属 UE配置一个邻小区测 量集; 如果宏基站已在该操作载波上配置了两个不同的 ABS模式, 则宏 基站将为所属 UE配置两个邻小区测量集。
以下仍以微基站 Pico2和 Picol为例进行说明, 其中 Pico2和 Picol 相互干扰, 并且 Picol已经在操作载波 f上配置了 ABS模式 1。 图 10是 本发明实施例的选择方法的又一流程图, 如图 10所示, 所述选择方法包 括:
歩骤 1001, 基站启动;
歩骤 1002, 操作维护网元进行配置;
歩骤 1003, 宏基站通过 X2接口接收信息;
歩骤 1004, 宏基站接收 Pico2在 f上的几乎空子帧申请;
歩骤 1005,宏基站判断 Pico2是否有不同于 _/!的操作载波(例如 /2); 如果有则执行歩骤 1006, 如果没有则执行歩骤 1007;
歩骤 1006, 宏基站在该不同的操作载波 /2上为 Pico2配置几乎空子 帧模式;
歩骤 1007, 宏基站为 Pico2在 上配置其他的几乎空子帧模式 (例 如 ABS模式 2);
歩骤 1008, 宏基站为所属的用户设备配置相邻小区测量集。
本发明实施例还提供一种宏基站, 与上述方法相同的内容不再赘述。 图 11是本发明实施例的宏基站的一构成示意图,如图 11所示,该宏基站 1100包括: 信息接收单元 1101、 申请接收单元 1102、 载波判断单元 1103 和子帧配置单元 1104; 该宏基站 1100的其他部分可以参考现有技术, 此 处不再赘述。
其中, 信息接收单元 1101接收相邻小区的包括操作载波的信息; 申 请接收单元 1102接收微基站发送的几乎空子帧申请, 该几乎空子帧申请 在与该微基站相互干扰的相邻小区相同的操作载波上; 载波判断单元 1103判断该微基站是否有其他的操作载波;子帧配置单元 1104在该微基 站有其他的操作载波时, 在该其他的操作载波上为该微基站配置几乎空 子帧模式。
图 12是本发明实施例的宏基站的一构成示意图, 如图 12所示, 该 宏基站 1200包括: 信息接收单元 1201、 申请接收单元 1202、 载波判断 单元 1203和子帧配置单元 1204。
进一歩地, 子帧配置单元 1204还可以用于: 在该微基站没有其他的 操作载波时, 在该操作载波上为该微基站配置与相互干扰的相邻小区不 同的几乎空子帧模式。
如图 12所示, 该宏基站 1200还可以包括: 测量集配置单元 1205, 测量集配置单元 1205为所属的用户设备配置相邻小区测量集。
由上述实施例可知, 通过宏基站在判断微基站有其他的操作载波之 后, 在其他的操作载波上为该微基站配置几乎空子帧模式; 在判断微基 站没有其他的操作载波之后, 在操作载波上为该微基站配置不同的几乎 空子帧模式。 可以在高密度部署微小区的场景下, 避免多个微小区之间 的干扰。
实施例 3
本发明实施例提供一种操作载波的选择方法, 应用于操作维护网元 侧。 图 13是本发明实施例的选择方法的流程图, 如图 13所示, 所述选 择方法包括: 歩骤 1301, 操作维护网元向微基站发送标示该微基站与相邻小区之 间存在强干扰的信息;
歩骤 1302, 操作维护网元向宏基站发送标示该宏基站覆盖范围内的 微小区之间存在强干扰的信息。
在本实施例中, OAM除了可以为基站配置操作载波之外, 还可以告 知微基站: 哪些相邻小区与该微基站有强干扰; 可以告知宏基站: 该宏 基站覆盖范围之内的微小区中, 哪些微小区之间相互干扰。
本发明实施例还提供一种操作维护网元。 图 14是本发明实施例的操 作维护网元的构成示意图, 如图 14所示, 该操作维护网元 1400包括: 第一发送单元 1401和第二发送单元 1402; 该操作维护网元 1400的其他 部分可以参考现有技术, 此处不再赘述。
其中, 第一发送单元 1401向微基站发送标示该微基站与相邻小区之 间存在强干扰的信息; 第二发送单元 1402向宏基站发送标示该宏基站覆 盖范围内的微小区之间存在强干扰的信息。
本发明实施例还提供一种计算机可读程序, 其中当在基站中执行所 述程序时, 所述程序使得计算机在所述基站中执行如上所述的操作载波 的选择方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质, 其中 所述计算机可读程序使得计算机在基站中执行如上所述的操作载波的选 择方法。
本发明以上的装置和方法可以由硬件实现, 也可以由硬件结合软件 实现。 本发明涉及这样的计算机可读程序, 当该程序被逻辑部件所执行 时, 能够使该逻辑部件实现上文所述的装置或构成部件, 或使该逻辑部 件实现上文所述的各种方法或歩骤。 本发明还涉及用于存储以上程序的 存储介质, 如硬盘、 磁盘、 光盘、 DVD、 flash存储器等。
针对附图中描述的功能方框中的一个或多个和 /或功能方框的一个或 多个组合, 可以实现为用于执行本申请所描述功能的通用处理器、 数字 信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA) 或者其它可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件 或者其任意适当组合。 针对附图描述的功能方框中的一个或多个和 /或功 能方框的一个或多个组合, 还可以实现为计算设备的组合, 例如, DSP 和微处理器的组合、 多个微处理器、 与 DSP通信结合的一个或多个微处 理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述, 但本领域技术人员 应该清楚, 这些描述都是示例性的, 并不是对本发明保护范围的限制。 本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和 修改, 这些变型和修改也在本发明的范围内。

Claims

禾'』 ^
1、 一种操作载波的选择方法, 所述选择方法包括:
微基站接收相邻小区的包括几乎空子帧配置的信息;
判断是否能够避免选择与相互干扰的相邻小区相同的操作载波; 若判断结果为能够避免选择所述操作载波, 所述微基站不使用所述 操作载波。
2、 根据权利要求 1所述的选择方法, 其中, 若判断结果为不能避免 选择所述操作载波, 所述选择方法还包括:
所述微基站判断是否能够避免在所述操作载波上申请几乎空子帧; 若判断结果为能够避免在所述操作载波上申请几乎空子帧, 则所述 微基站在其他的操作载波上申请几乎空子帧。
3、 根据权利要求 2所述的选择方法, 其中, 若判断结果为不能避免 在所述操作载波上申请几乎空子帧, 所述选择方法还包括:
所述微基站在所述操作载波上, 申请与所述相互干扰的相邻小区不 同的几乎空子帧模式。
4、根据权利要求 1所述的选择方法, 其中, 通过 ABS information IE 指示所述几乎空子帧配置的信息, 或者通过 ABS status IE指示所述几乎 空子帧配置的信息。
5、 根据权利要求 1至 4任一项所述的选择方法, 其中, 所述选择方 法还包括:
所述微基站为所属的用户设备配置对所述相互干扰的相邻小区在所 述操作载波上的测量集。
6、 一种操作载波的选择方法, 所述选择方法包括:
宏基站接收相邻小区的包括操作载波的信息;
接收微基站发送的几乎空子帧申请, 所述几乎空子帧申请在与所述 微基站相互干扰的相邻小区相同的操作载波上;
判断所述微基站是否有其他的操作载波;
若所述微基站有其他的操作载波, 则所述宏基站在所述其他的操作 载波上为所述微基站配置几乎空子帧模式。
7、 根据权利要求 6所述的选择方法, 其中, 若所述微基站没有其他 的操作载波, 所述选择方法还包括:
所述宏基站在所述操作载波上为所述微基站配置与所述相互干扰的 相邻小区不同的几乎空子帧模式。
8、 根据权利要求 6或 7所述的选择方法, 其中, 所述选择方法还包 括:
所述宏基站为所属的用户设备配置相邻小区测量集。
9、 一种操作载波的选择方法, 所述选择方法包括:
操作维护网元向微基站发送标示所述微基站与相邻小区之间存在强 干扰的信息;
操作维护网元向宏基站发送标示所述宏基站覆盖范围内的微小区之 间存在强干扰的信息。
10、 一种微基站, 所述微基站包括:
信息接收单元, 接收相邻小区的包括几乎空子帧配置的信息; 载波判断单元, 判断是否能够避免选择与相互干扰的相邻小区相同 的操作载波;
载波操作单元, 在所述载波判断单元的判断结果为能够避免选择所 述操作载波时, 不使用所述操作载波。
11、 根据权利要求 10所述的微基站, 其中, 所述微基站还包括: 子帧判断单元, 在所述载波判断单元的判断结果为不能避免选择所 述操作载波时, 判断是否能够避免在所述操作载波上申请几乎空子帧; 子帧申请单元, 在所述子帧判断单元的判断结果为能够避免在所述 操作载波上申请几乎空子帧时, 在其他的操作载波上申请几乎空子帧。
12、 根据权利要求 11所述的微基站, 其中, 所述子帧申请单元还用 于在所述子帧判断单元的判断结果为不能避免在所述操作载波上申请几 乎空子帧时, 在所述操作载波上申请与所述相互干扰的相邻小区不同的 几乎空子帧模式。
13、根据权利要求 10所述的微基站, 其中, 通过 ABS information IE 指示所述几乎空子帧配置的信息, 或者通过 ABS status IE指示所述几乎 空子帧配置的信息。
14、 根据权利要求 10至 13任一项所述的微基站, 其中, 所述微基 站还包括:
测量集配置单元, 为所属的用户设备配置对所述相互干扰的相邻小 区在所述操作载波上的测量集。
15、 一种宏基站, 所述宏基站包括:
信息接收单元, 接收相邻小区的包括操作载波的信息;
申请接收单元, 接收微基站发送的几乎空子帧申请, 所述几乎空子 帧申请在与所述微基站相互干扰的相邻小区相同的操作载波上;
载波判断单元, 判断所述微基站是否有其他的操作载波;
子帧配置单元, 在所述微基站有其他的操作载波时, 在所述其他的 操作载波上为所述微基站配置几乎空子帧模式。
16、 根据权利要求 15所述的宏基站, 其中, 所述子帧配置单元还用 于在所述微基站没有其他的操作载波时, 在所述操作载波上为所述微基 站配置与所述相互干扰的相邻小区不同的几乎空子帧模式。
17、 根据权利要求 15或 16所述的宏基站, 其中, 所述宏基站还包 括:
测量集配置单元, 为所属的用户设备配置相邻小区测量集。
18、 一种操作维护网元, 所述操作维护网元包括:
第一发送单元, 向微基站发送标示所述微基站与相邻小区之间存在 强干扰的信息;
第二发送单元, 向宏基站发送标示所述宏基站覆盖范围内的微小区 之间存在强干扰的信息。
19、 一种计算机可读程序, 其中当在基站中执行所述程序时, 所述 程序使得计算机在所述基站中执行如权利要求 1至 9任一项所述的操作 载波的选择方法。
20、 一种存储有计算机可读程序的存储介质, 其中所述计算机可读 程序使得计算机在基站中执行如权利要求 1至 9任一项所述的操作载波 的选择方法。
PCT/CN2012/072424 2012-03-16 2012-03-16 操作载波的选择方法、微基站及宏基站 WO2013134946A1 (zh)

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