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WO2012092719A1 - 对干扰进行协调的方法和装置及通信系统、移动台和基站 - Google Patents

对干扰进行协调的方法和装置及通信系统、移动台和基站 Download PDF

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Publication number
WO2012092719A1
WO2012092719A1 PCT/CN2011/070089 CN2011070089W WO2012092719A1 WO 2012092719 A1 WO2012092719 A1 WO 2012092719A1 CN 2011070089 W CN2011070089 W CN 2011070089W WO 2012092719 A1 WO2012092719 A1 WO 2012092719A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
cell base
subframe
pico
transmit
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/070089
Other languages
English (en)
French (fr)
Inventor
张翼
张元涛
兰元荣
周华
吴建明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to CN2011800507256A priority Critical patent/CN103202048A/zh
Priority to PCT/CN2011/070089 priority patent/WO2012092719A1/zh
Publication of WO2012092719A1 publication Critical patent/WO2012092719A1/zh
Priority to US13/933,360 priority patent/US20130294338A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present invention relates generally to the field of communications.
  • it relates to a method and apparatus for coordinating interference in a communication system, e.g., in an LTE-A (Long Term Evolution-Advanced) system, and a corresponding communication system, mobile station, base station.
  • LTE-A Long Term Evolution-Advanced
  • the concept of heterogeneous networks was introduced in the advanced long-term evolution scheme of the next generation wireless communication system (ie LTE-A).
  • the heterogeneous network system of LTE-A may include a Macro Cell, a Femto Cdl, a Pico Cell, a Remote Radio Head (RRH), a Relay, and the like.
  • RRH Remote Radio Head
  • 1 is a schematic diagram showing a heterogeneous communication system including nodes of the above-described macro cell, femto cell, pico cell, and the like.
  • the newly deployed wireless node not only increases the capacity of the system, but also provides better service to users in special areas and optimizes system performance.
  • a cell extension technique is often employed. Specifically, by changing the cell selection criteria of the mobile station, some mobile stations belonging to the macro cell service are changed to belong to the pico cell service.
  • Figure 2 illustrates the interference experienced by a mobile station changing from a macro cell service to a pico cell service in a scenario where the macro cell and the pico cell are mixed.
  • a mobile station subject to cell extension processing it may be subject to macro cell interference when communicating through the pico cell.
  • the transmission of the common channel of the macro cell for propagating broadcast information may affect the transmission of the common channel of the pico cell for propagating broadcast information, the transmission of the channel state information reference symbol (CSI-RS) of the macro cell. It may also affect the common channel of the pico cell. Especially in the case where the macro cell adopts the technology of energy boosting, these interferences are more obvious.
  • CSI-RS channel state information reference symbol
  • the location of the CSI-RS in the physical transmission resource depends on the system configuration; and the physical transmission resource of the common channel is often predetermined, and the common channel refers to the broadcast information that needs to be received during the communication process.
  • the channel, the common channel may include, for example, a broadcast channel (PBCH), a synchronization channel (PSS/SSS primary system information block (SIB1), paging channel (PCH).
  • PBCH broadcast channel
  • SIB1 synchronization channel
  • PCH paging channel
  • Table 1 shows the physical transmission resources of the common channel and CSR-RS transmission in a frequency division duplex (FDD) system.
  • FDD frequency division duplex
  • the common channel occupies the 0th, 4th, 5th, and 9th subframes.
  • the PBCH channel occupies the 0th subframe
  • the PSS channel occupies the 0th and 5th subframes
  • the SSS channel occupies the 0th and 5th subframes
  • the SIB1 channel occupies the 5th subframe
  • the Paging channel occupies the 0, 4, 5, 9 subframes, 9th subframe, or 4th, 9th subframes.
  • Table 1 also shows the transmission periods of the CSI-RS and the common channel and the OFDM symbol positions of the CSI-RS and the common channel in the resource block.
  • the macro cell may It will cause interference to the pico cell and affect the reliable transmission of the common channel in the pico cell.
  • the transmission of the CSI-RS of the macro cell base station also affects its own common channel. .
  • interferences caused by CSI-RS
  • the interference including the impact on the macro cell and the impact on the pico cell
  • the macro cell common channel pair pico and the associated communication systems, mobile stations and base stations.
  • An embodiment of the present invention provides a method for coordinating interference in a communication system, comprising: a macro cell base station in a communication system collecting interference coordination related to a channel state information reference symbol of the macro cell base station The information is sent to the pico-cell base station; the pico-cell base station in the communication system sends the interference coordination information to the terminal served by the pico-cell base station, so as to interfere the macro cell with the pico-cell according to the interference coordination information. Coordination.
  • Another embodiment of the present invention provides a method for coordinating interference in a communication system, comprising: receiving, by a terminal in a communication system, channel state information of a macrocell base station from a picocell base station serving the same The interference coordination information related to the reference symbol; the terminal in the communication system cancels the interference information from the received information according to the interference coordination information, so as to eliminate interference caused by the macro cell to the pico cell.
  • Another embodiment of the present invention further provides a method for coordinating interference in a communication system, including: a macro cell base station in a communication system notifying a pico-cell base station in a communication system based on its own frame structure Transmitting a transmission frame of the pico-cell base station backward; and based on the length of the pico-cell base station backward-shifting the transmission frame, the macro-cell base station selects a subframe for transmitting a channel state information reference symbol in its own transmission frame.
  • the subframe selected by the macro cell base station for transmitting a channel state information reference symbol is not at least partially not used with the macro cell base station for transmitting a common channel subframe and the pico
  • An embodiment of the present invention provides an apparatus for coordinating interference in a communication system, comprising: an interference coordination information generating section configured to generate interference coordination related to a channel state information reference symbol of the apparatus And transmitting the information to the pico-cell base station in the communication system, where the interference coordination information is sent to the terminal served by the pico-cell base station to implement interference coordination, so that the macro cell is used for the pico-cell according to the interference coordination information.
  • the resulting interference is coordinated.
  • Another embodiment of the present invention provides an apparatus for coordinating interference in a communication system, comprising: an interference coordination information receiving section configured to receive with the macrocell from a macrocell base station in a communication system
  • the channel state information of the base station refers to the interference coordination information related to the symbol
  • the interference coordination information transmitting unit is configured to send the interference coordination information to the terminal served by the device, so as to compare the macro cell according to the interference coordination information.
  • the interference caused by the picocell corresponding to the device is coordinated.
  • Another embodiment of the present invention provides an apparatus for coordinating interference in a communication system, comprising: a receiving unit configured to receive from a picocell base station in a communication system with a macrocell base station in a communication system
  • the channel state information refers to interference coordination information related to the symbol
  • the canceling portion is configured to cancel the interference information from the received information according to the interference coordination information, so as to eliminate interference caused by the macro cell to the pico cell.
  • Another embodiment of the present invention also provides an apparatus for coordinating interference in a communication system, comprising: a panning section configured to be in a communication system based on a frame structure of a macrocell base station in a communication system
  • the transmission frame of the pico-cell base station is backward-shifted;
  • the selecting unit is configured to select a reference for the transmission channel state information from the transmission frame of the macro-cell base station based on the length of the backward-transition transmission frame of the pico-cell base station a symbol subframe to transmit a channel state information reference symbol; wherein, the subframe selected by the selecting unit for transmitting a channel state information reference symbol is not at least partially not used with a subframe used by the macro cell base station to transmit a common channel, and
  • the sub-cell base station is configured to transmit a subframe overlap of the common channel; and the subframe used by the macro cell base station to transmit the common channel is at least partially not overlapped with the subframe used by the pico-cell base station to transmit the common channel.
  • embodiments of the present invention also provide corresponding base stations and terminals and communication systems including the base stations and terminals.
  • FIG. 1 is a schematic diagram showing the structure of a heterogeneous communication system
  • FIG. 2 illustrates interference received by a mobile station changing from a macro cell service to a pico cell service in a scenario where a macro cell and a pico cell are mixed;
  • FIG. 3 shows a flow chart of a method of coordinating interference according to an embodiment of the present invention
  • FIG. 4 shows a flow of a method for coordinating interference according to an embodiment of the present invention.
  • Figure 27 is a diagram showing a terminal using an interference coordination message to eliminate interference according to an embodiment of the present invention. Flow chart of the processing of the disturbance;
  • Figure 6 is a flow chart showing a method of coordinating interference according to another embodiment of the present invention.
  • FIG. 7 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a preferred embodiment of the present invention
  • FIG. 8 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a preferred embodiment of the present invention
  • FIG. 9 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a modified embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a modified embodiment of the present invention.
  • FIG. 11 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a modified embodiment of the present invention
  • FIG. 12 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a modified embodiment of the present invention
  • FIG. 13 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a modified embodiment of the present invention
  • FIG. 14 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a modified embodiment of the present invention
  • 15 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to a modified embodiment of the present invention
  • 16a and 16b respectively show an apparatus for coordinating interference according to an embodiment of the present invention
  • Figure 17 shows a schematic diagram of an apparatus for coordinating interference in accordance with one embodiment of the present invention.
  • Figure 18 is a schematic view showing a canceling portion according to an embodiment of the present invention.
  • 20 is a block diagram showing an exemplary structure of a computer in which the apparatus and method of the present invention are implemented. detailed description
  • the LTE-A wireless communication system is taken as an example for illustration, but it is obvious that the present invention is not limited thereto, and those skilled in the art may recognize that the inventive concept disclosed herein may also be applied to other existing or In the communication system that will appear in the future.
  • a method of coordinating interference includes a step S302 and a step S304.
  • the macro cell base station collects interference coordination information related to the CSI-RS and transmits it to the pico-cell base station.
  • the macro cell base station collects configuration information related to the CSI-RS, and transmits the configuration information as interference coordination information to the associated picocell base station through an interface between the base stations (for example, an X2 interface).
  • step S304 the pico-cell base station transmits the received interference coordination information to the terminal served by the pico-cell base station.
  • the pico-cell base station may use the CSI-RS related to the CSI-RS received from the macro-cell base station by using communication signaling between the terminal and the base station (for example, radio resource control signaling, that is, RRC signaling).
  • the interference coordination information is sent to the terminal served by the pico-cell base station.
  • the interference coordination information related to the CSI-RS of the macro cell base station can be sent to the terminal served by the pico-cell base station, which helps to achieve interference coordination.
  • the interference coordination information collected by the macro cell base station and transmitted by the pico-cell base station to the terminal served by the pico-cell base station may include, for example, a CSI-RS period, CSI-RS Subframe position, time-frequency resource location of CSI-RS, transmission symbol of CSI-RS, and transmission power of CSI-RS.
  • the CSI-RS period, the CSI-RS subframe position, and the CSI-RS time-frequency resource location are information related to the CSI-RS transmission location; and the CSI-RS transmission symbol is related to the transmission format.
  • the information may be determined based on the slot number, the cell identifier, and the cyclic prefix information; and the transmission power of the CSI-RS is information related to the transmission power.
  • the information related to the CSI-RS transmission can be provided to the terminal through the above-described information related to the CSI-RS.
  • the terminal can also eliminate information from the received information based on such interference coordination information related to the CSI-RS.
  • FIG. 4 shows a flow chart of a method of coordinating interference in a communication system in accordance with one embodiment of the present invention.
  • the terminal receives interference coordination information.
  • the terminal receives interference coordination information related to CSI-RS collected by the macro cell base station in the communication system from the pico-cell base station serving the terminal.
  • step S404 the terminal cancels the interference caused by the CSI-RS from the received information based on the received interference coordination message.
  • the terminal can eliminate the interference caused by the macro cell base station transmitting the CSI-RS to the pico cell.
  • the interference coordination information related to the CSI-RS may be an interference coordination message collected by the macro cell base station in the method shown in FIG. 3, for example, which may include : CSI-RS period, CSI-RS subframe position, CSI-RS time-frequency resource location, CSI-RS transmission symbol, and CSI-RS transmission power.
  • the terminal can cancel the interference of the CSI-RS by using the interference coordination message by the following processing.
  • FIG. 5 is a flow chart showing a process in which a terminal uses interference coordination messages to cancel interference, according to an embodiment of the present invention.
  • the terminal may determine the location of the CSI-RS transmission subframe according to the interference coordination information.
  • the terminal may determine, according to the period of the CSI-RS in the interference coordination information related to the CSI-RS, the subframe position of the CSI-RS, and the time-frequency resource location of the CSI-RS, the macro cell base station transmits the CSI. - The subframe position of the RS. In this way, the terminal can determine the location of the interference.
  • the terminal can determine whether there is resource scheduling at the interference location.
  • the terminal may determine that there is no resource scheduling at the interference location and end the processing. On the other hand, if the terminal finds that there is information transmission for the terminal at the interference location, the terminal may determine that there is resource scheduling at the interference location and proceeds to step S506.
  • the terminal may cancel the influence of the interference from the received signal according to the interference coordination information related to the CSI-RS.
  • the terminal may further determine the interference size according to the CSI-RS transmission symbol and the transmission power of the CSI-RS in the interference coordination information, and based on the determined interference size from the received signal at the interference position. Eliminate the effects of interference.
  • the terminal can eliminate the influence caused by the transmission of the CSI-RS by the macro cell base station from the received information, thereby ensuring the quality of the information reception.
  • the terminal removes the influence of interference from the received signal based on the interference coordination information from the base station side. That is to say, the interference of the macro cell base station transmission CSI-RS to the pico cell is eliminated on the terminal side.
  • the method provided above is only an example, and the present invention is not limited thereto.
  • the interference of the macro cell base station to the pico cell base station may also be eliminated or mitigated from the base station side.
  • FIG. 6 shows a flow diagram of a method of coordinating interference in accordance with another embodiment of the present invention.
  • the method of coordinating interference includes a step S602 of shifting a subframe backward and a step S604 of selecting a subframe for transmitting a CSI-RS.
  • the macro cell base station may according to a frame structure of the macro cell base station (specifically, a subframe position occupied by the common channel) ) to inform the picocell base station to translate the transmission frame backwards.
  • the macro cell base station may select a subframe for transmitting the CSI-RS according to the translation length of the transmission frame of the pico-cell base station; such that: the subframe selected by the macro-cell base station for transmitting the CSI-RS At least partially not overlapping with a subframe used by the macro cell base station to transmit the common channel and a subframe for transmitting the common channel by the pico-cell base station; and the subframe used by the macro-cell base station to transmit the common channel is at least partially not connected to the pico-cell base station Subframe overlap for transmitting a common channel.
  • the interference of the macro cell to the pico cell is avoided by reasonably arranging the transmission frame of the macro cell base station and the transmission frame of the pico cell base station. Specifically, when arranging the transmission frame of the macro cell base station and the transmission frame of the pico cell base station, the following three needs to be considered. Limitation.
  • the subframe of the macro cell base station for transmitting the CSI-RS does not overlap with the subframe used by the macro cell base station to transmit the common channel.
  • the subframes used for transmitting the common channel are the 0th, 4th, 5th, and 9th subframes in the frame, respectively. Therefore, in order to satisfy the first limitation, the subframe selected by the macro cell base station for transmitting the CSI-RS may not be the 0th, 4th, 5th, and 9th subframes of the macro cell transmission frame, so as to avoid the CSI-RS transmitted by the macro cell base station. It causes interference to the common channel of the macro cell base station itself.
  • the subframe used by the macro cell base station to transmit the CSI-RS does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the subframes for transmitting the common channel are the 0th, 4th, 5th, and 9th subframes in the frame, respectively. Therefore, in order to satisfy the second limitation, the subframe selected by the macro cell base station for transmitting the CSI-RS cannot overlap with the subframe in which the pico-cell base station transmits the common channel, so as to avoid the common channel of the CSI-RS to the pico-cell of the macro-cell base station. Cause interference.
  • the subframes used by the macro cell base station and the pico cell base station to transmit the common channel are the 0th, 4th, 5th, and 9th subframes in the respective transmission frames.
  • the transmission frame of the pico-cell base station can be translated, and the sub-frames of the translated pico-cell base station for transmitting the common channel (ie, the 0th, 4th, 5th, and 9th sub-frames in the translated frame)
  • the frame cannot overlap with the subframe of the macro cell base station for transmitting the function channel to prevent the common channel of the macro cell base station from causing interference to the common channel of the pico cell base station.
  • the macro cell base station may notify the pico-cell base station to shift the transmission frame of the pico-cell base station backward by 2 subframes according to its own frame structure, so that the pico-cell base station A subframe occupied by a common channel in a transmission frame is not overlapped with a subframe occupied by a common channel in a transmission frame of a macro cell base station.
  • the macro cell base station may select the third subframe and/or the eighth subframe in the macro cell base station transmission frame to transmit the CSI-RS, so that the subframe used by the macro cell base station to transmit the CSI-RS is not common to the pico cell base station. Subframes occupied by the channel overlap.
  • FIG. 7 is a diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the preferred embodiment.
  • the upper is the transmission frame of the macro cell base station (12 sub-frames are shown, wherein the 0-9th subframe constitutes one transmission frame), and the lower is the transmission frame of the pico-cell base station (similarly, 12 sub-frames are shown, wherein the 0-9th sub-frames constitute a transmission frame), and the shaded parts respectively represent sub-frames for the common channel of the macro-cell base station and the pico-cell base station, and are used in the transmission frame of the macro-cell base station.
  • Subframes for transmitting CSI-RS are indicated by ellipses. Further, the structure of the transmission frame shown in FIG.
  • FIG. 7 (including the schematic diagram of the subsequent frame structure) (for example, the length of one transmission frame is 10 subframes) is merely an example, but the present invention is not limited thereto, for example, the length of the frame is also The location that can be extended to other suitable lengths or to the transmission frame hollow subframes can also be configured by the system in other ways.
  • Fig. 7 is provided to clarify the inventive concept of the present invention, in which one transmission frame includes 10 subframes as an example.
  • FIG. 7 shows only one segment in the transmission frame unit block, obviously, the present invention
  • the inventive concept can also be extended to a full length transmission frame unit not shown in the figure (the following figures are similar).
  • a subframe of a macro cell base station for transmitting a CSI-RS or a subframe for a common channel may cause interference to a subframe of a corresponding picocell base station below.
  • a subframe of a pico-cell base station corresponding to a subframe for transmitting a CSI-RS or a subframe for a common channel of a macro-cell base station carries a common channel
  • a CSI-RS of a macro-cell base station or a macro-cell base station The common channel interferes with the common channel of the picocell base station.
  • the macro cell base station can notify the pico-cell base station to shift its transmission frame backward by 2 subframes according to its own frame structure, and thus the 0th subframe and macro in the transmission frame of the pico-cell base station.
  • the second subframe of the transmission frame of the cell base station overlaps.
  • the transmission frame of the picocell base station is shifted backward by 2 subframes
  • the macrocell base station selects When the CSI-RS is transmitted on the 3rd or 8th subframe, the subframe in which the CSI-RS is transmitted is not overlapped with the subframe used by the pico-cell base station to transmit the common channel, and the macro-cell base station itself is used to transmit the common channel.
  • the subframes overlap, thereby preventing the macro cell base station from transmitting CSI-RS interference to the common channel of the macro cell base station and the common channel of the micro cell base station.
  • the common channel of the macro-cell base station to the pico-cell base station can be completely eliminated.
  • the interference of the channel and the interference of the CSI-RS of the macro cell to the common channel of the macro cell base station and the common channel of the micro cell base station.
  • the transmission configuration scheme that can coordinate the interference in the embodiment shown in FIG. 7 includes: the macro cell base station utilizes the transmission frame ( The third subframe and/or the eighth subframe in the case where 10 subframes are included in one transmission frame (depending on the period, whether subframes 3 and 8 can be used simultaneously) are transmitted to transmit the CSI-RS.
  • the transmission period of the CSI-RS may be 5 subframes, 10 subframes, 20 subframes, or 40 subframes according to different application scenarios.
  • the subframe used by the macro-cell base station to transmit the CSI-RS may be the third subframe in the frame or The 8th subframe satisfies the requirements of the CSI-RS transmission period.
  • the subframe used by the macro cell base station to transmit the CSI-RS may be the 3rd subframe and the 8th subframe in the frame to satisfy the CSI. - RS transmission cycle requirements.
  • the macro cell base station may notify the pico-cell base station to translate the transmission frame of the pico-cell base station backward by three subframes according to its own frame structure, so that the pico-cell base station transmits the frame.
  • the subframe occupied by the common channel does not overlap with the subframe occupied by the common channel in the transmission frame of the macro cell base station.
  • the macro cell base station may select the first subframe and/or the sixth subframe in the transmission frame to transmit the CSI-RS, so that the subframe used by the macro cell base station to transmit the CSI-RS does not occupy the common channel of the picocell base station.
  • the sub-frames overlap.
  • FIG. 8 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the preferred embodiment.
  • the upper part is a transmission frame of a macro cell base station including 10 subframes
  • the lower part is a transmission frame of a pico-cell base station including 10 subframes
  • the shaded part represents a sub-frame for a common channel.
  • Frame, a subframe for transmitting a CSI-RS in a transmission frame of a macro cell base station is indicated by an ellipse.
  • the transmission frame of the pico-cell base station is shifted backward by three subframes, so that the 0th subframe in the transmission frame of the pico-cell base station overlaps with the third subframe of the transmission frame of the macro-cell base station.
  • the subframe in which the CSI-RS is transmitted does not overlap with the subframe used by the macro cell base station itself to transmit the common channel. Thereby, it is possible to prevent the macro cell base station from transmitting interference of the CSI-RS to the common channel of the macro cell base station and the common channel of the micro cell base station.
  • the common channel of the macro-cell base station to the public of the pico-cell base station can be completely eliminated.
  • the interference of the channel and the interference of the CSI-RS of the macro cell to the common channel of the macro cell base station and the common channel of the micro cell base station.
  • the transmission configuration scheme that can coordinate the interference in the embodiment shown in FIG. 8 includes: the macro cell base station utilizes the transmission frame ( The first subframe and/or the sixth subframe in a transmission frame including 10 subframes as an example (determining whether subframes 1 and 6 can be used simultaneously depending on the period) transmits the CSI-RS.
  • the transmission period of the CSI-RS may be 5 subframes, 10 subframes, 20 subframes, or 40 subframes according to different application scenarios.
  • the subframe used by the macro cell base station to transmit the CSI-RS may be the first or the first in the frame. Six subframes meet the requirements of the CSI-RS transmission cycle.
  • the subframe used by the macro cell base station to transmit the CSI-RS may be the first and sixth subframes in the frame to satisfy the CSI- RS transmission cycle requirements.
  • the foregoing preferred embodiments are merely examples, and the present invention is not limited thereto.
  • the embodiments of the present invention may also be appropriately modified. More flexibility.
  • Example scenario 1 It is only necessary to ensure that the SIB1 channel and Paging channel of the pico-cell base station are not interfered by CSI-RS
  • the limitation of the subframe position at which the macro-cell base station transmits the CSI-RS may be appropriately relaxed.
  • the macro cell base station can notify the pico cell base station to the pico according to its own frame structure.
  • the transmission frame of the cell base station is shifted backward by 2 or 3 subframes.
  • the pico-cell base station may shift its transmission frame backward by 2 subframes, in which case, in addition to the 3rd and/or 8th subframes in the preferred example 1 above.
  • the macro cell base station may also transmit the CSI-RS in the second subframe or in the sixth subframe.
  • FIG. 9 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the above modified embodiment.
  • the macro cell base station may also transmit the CSI-RS in the 2nd subframe or the 6th subframe to ensure the picocell base station.
  • the SIB1 channel and the paging channel are not interfered by the CSI-RS transmitted by the macro cell base station.
  • FIG. 9 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the above modified embodiment.
  • the macro cell base station may also transmit the CSI-RS in the 2nd subframe or the 6th subframe to ensure the picocell base station.
  • the SIB1 channel and the paging channel are not interfered by the CSI-RS transmitted by the macro cell base station.
  • subframes for example, subframes 3 and 8 that can simultaneously transmit CSI-RSs are marked with ellipses of the same size, and subframes that cannot simultaneously transmit CSI-RSs (for example, the second sub-frame) Frames, 6th subframe) are marked with ovals of different sizes (similar to the following figures).
  • the transmission configuration scheme that can coordinate the interference in the embodiment shown in FIG. 9 includes: the macro cell base station utilizes the transmission frame ( Transmitting the CSI-RS by using the third subframe and/or the eighth subframe in the case of including 10 subframes in one transmission frame (depending on the period to determine whether subframes 3 and 8 can be used simultaneously); or 2 subframes or 6th subframe to transmit CSI-RS.
  • the SIB1 channel occupies the 5th subframe in the frame, and the Paging channel can occupy the 0, 4, 5, 9 subframes, 9th subframe, or 4th, 9th subframes.
  • the Paging channel can be configured to occupy the 9th subframe or the 4th, 9th subframe.
  • the transmission of the CSI-RS of the macro cell base station may cause interference to the 0th subframe of the pico-cell base station.
  • the SIB1 channel does not occupy the 0th subframe and the paging channel may not occupy the 0th subframe (in the case where the paging channel is configured to occupy the 9th subframe or the 4th, 9th subframe), It can be ensured that the SIB1 channel and the Paging channel of the pico-cell base station are not interfered by the CSI-RS transmitted by the macro-cell base station.
  • the transmission of the CSI-RS of the macro cell base station may cause interference to the fourth subframe of the pico-cell base station.
  • the SIB1 channel does not occupy the 4th subframe and the paging channel may not occupy the 4th subframe (in the case where the paging channel is configured to occupy the ninth subframe), thus, the SIB1 of the picocell base station can be ensured.
  • the channel and the paging channel are not interfered by the CSI-RS transmitted by the macro cell base station.
  • the macro cell base station when the macro cell base station transmits the CSI-RS in the second subframe, the macro cell base station transmits the second subframe of the CSI-RS and the part of the pico-cell base station.
  • the 0th subframe occupied by the channel ie, PBCH channel, PSS channel, SSS channel
  • overlaps that is, interference is caused to these common channels.
  • the interference of the CSI-RS to the common channel can be mitigated by adjusting the CSI-RS symbol bits.
  • the OFDM symbol positions of a PBCH channel, a PSS channel, and an SSS channel in one resource block may be (7, 8, 9, 10), 6, and 5, respectively.
  • the macro cell base station when the macro cell base station transmits the CSI-RS in the second subframe, the macro cell base station may transmit the CSI-RS in the 12, 13 symbol bits of the resource block, that is, in the common channel.
  • the CSI-RS is transmitted at a position where the symbol positions in the resource block are different.
  • the transmission frame of the pico-cell base station can also be shifted backward by 3 subframes, in which case, in addition to the above-described preferred example
  • the macro cell base station may also transmit CSI-RS in the 3rd subframe or in the 7th subframe.
  • the macro cell base station may also transmit the CSI-RS in the 3rd subframe or the 7th subframe to ensure the picocell base station.
  • the SIB1 channel and the paging channel are not interfered by the CSI-RS transmitted by the macro cell base station.
  • the transmission configuration scheme for coordinating interference can be implemented: the macro cell base station utilizes the transmission frame. Transmitting CSI-RS by using the first sub-frame and/or the sixth sub-frame (in the case of including 10 subframes in one transmission frame as an example) (determining whether subframes 1 and 6 can be used simultaneously depending on the period); The third subframe or the seventh subframe transmits the CSI-RS.
  • the SIB1 channel occupies the fifth subframe in the frame, and the Paging channel can occupy the 0th, 4th, 5th, 9th subframe, the 9th subframe, or the 4th, 9th subframe.
  • the Paging channel can preferably be configured to occupy the 9th subframe or the 4th, 9th subframe.
  • the transmission of the CSI-RS of the macro cell base station may cause interference to the 0th subframe of the pico-cell base station.
  • the SIB1 channel does not occupy the 0th subframe and the paging channel may not occupy the 0th subframe (in the case where the paging channel is configured to occupy the 9th subframe or the 4th, 9th subframe), It can be ensured that the SIB1 channel and the Paging channel of the pico-cell base station are not interfered by the CSI-RS transmitted by the macro-cell base station.
  • the transmission of the CSI-RS of the macro cell base station may cause interference to the fourth subframe of the pico-cell base station.
  • the SIB1 channel does not occupy the 4th subframe and the paging channel may not occupy the 4th subframe (in the case where the paging channel is configured to occupy the ninth subframe), thus, the SIB1 of the picocell base station can be ensured.
  • the channel and the paging channel are not interfered by the CSI-RS transmitted by the macro cell base station.
  • the 0th subframe of the pico-cell base station ie, the PBCH channel, the PSS channel, and the SSS channel
  • the 0th subframe of the pico-cell base station ie, the PBCH channel, the PSS channel, and the SSS channel
  • the CSI-RS interference to the common channel can be mitigated by adjusting the CSI-RS symbol bits.
  • the OFDM symbol positions of a PBCH channel, a PSS channel, and an SSS channel in one resource block may be (7, 8, 9, 10), 6, and 5, respectively.
  • the macro cell base station when the macro cell base station transmits the CSI-RS in the third subframe, the macro cell base station may be at the resource block 12.
  • the 13 symbol bits transmit CSI-RS, that is, the CSI-RS is transmitted at a position different from the symbol position of the common channel in the resource block to alleviate interference to the PBCH channel, the PSS channel, and the SSS channel.
  • Example Scenario 2 Can interfere with the interference of the CSI-RS of the macro cell base station on its Paging channel
  • the limitation of the subframe position at which the macro cell base station transmits the CSI-RS may be appropriately relaxed.
  • the pico cell base station can shift the transmission frame backward by 2 or 3 subframes.
  • the transmission frame of the pico-cell base station may be shifted backward by 2 subframes, in which case, in addition to the third and/or In addition to the 8 subframes, the macro cell base station may also transmit the CSI-RS on the 4th and/or 9th subframes.
  • FIG. 11 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the above modified embodiment.
  • the macro cell base station may transmit the CSI-RS on the 4th and / or 9th subframes.
  • the CSI-RS is transmitted on the 4th and / or 9th subframes, there is interference of the CSI-RS of the macro cell base station on its Paging channel.
  • the transmission configuration scheme for coordinating interference can be implemented in the embodiment shown in FIG. 11: the macro cell base station utilizes the transmission frame ( Transmitting the CSI-RS by using the third subframe and/or the eighth subframe in the case of including 10 subframes in one transmission frame (determining whether subframes 3 and 8 can be used simultaneously depending on the period); or utilizing The fourth subframe and/or the first of the transmission frames (including 10 subframes in one transmission frame)
  • the Paging channel can occupy the 0th, 4th, 5th, 9th subframe, the 9th subframe, or the 4th, 9th subframes based on different configurations.
  • the CSI-RS when a macro cell base station transmits a CSI-RS on a fourth subframe, the CSI-RS may be a Paging channel of the macro cell base station (for example, when the Paging channel occupies 0, 4, 5) Interference caused by 9 subframes or occupying the 4th and 9th subframes, but the CSI-RS does not interfere with other common channels of the macro cell base station, nor does it interfere with the common channel of the picocell base station.
  • the macro The common channel of the cell base station also does not interfere with the common channel of the pico cell base station.
  • FIG. 11 when a macro cell base station transmits a CSI-RS on a fourth subframe, the CSI-RS may be a Paging channel of the macro cell base station (for example, when the Paging channel occupies 0, 4, 5) Interference caused by 9 subframes or occupying the 4th and 9th subframes, but the CSI-RS does not interfere with other common channels of the macro cell base station, nor does it interfere with the
  • the CSI-RS may cause interference to the Paging channel of the macro cell base station, but the CSI-RS does not
  • the other common channels of the macro cell base station cause interference, and do not cause interference to the common channel of the pico cell base station.
  • the common channel of the macro cell base station does not interfere with the common channel of the pico cell base station.
  • the transmission period of the CSI-RS can be 5 subframes, 10 subframes, 20 subframes or 40 subframes according to different application scenarios.
  • the CSI-RS of the macro cell base station is allowed to interfere with its paging channel
  • the transmission period of the CSI-RS is 10 subframes, 20 subframes, or 40 subframes
  • the macro cell base station is used for
  • the subframe in which the CSI-RS is transmitted may be the fourth subframe or the ninth subframe in the frame.
  • the macro cell base station is configured to transmit the subframe of the CSI-RS. It can be the 4th subframe and the 9th subframe in the frame.
  • the transmission frame of the pico-cell base station can be shifted backward by 3 subframes.
  • the macro cell base station may transmit the CSI-RS on the 4th and / or 9th subframes in addition to the 1st and / or 6th subframes in the above preferred example.
  • the macro cell base station can also transmit CSI-RS on the 4th and / or 9th subframes.
  • CSI-RS is transmitted on the 4th and / or 9th subframes, there is interference of the CSI-RS of the macro cell base station to its Paging channel.
  • the transmission configuration scheme that can coordinate the interference in the embodiment shown in FIG. 12 includes: the macro cell base station utilizes the transmission frame ( The first subframe and/or the sixth subframe in a transmission frame including 10 subframes as an example (determining whether the subframes 1 and 6 can be used simultaneously depending on the period) to transmit the CSI-RS; or using the transmission The fourth subframe and/or ninth of the frame (taking 10 subframes in one transmission frame as an example)
  • the Paging channel can occupy the 0th, 4th, 5th, 9th subframe, the 9th subframe, or the 4th, 9th subframes based on different configurations.
  • the CSI-RS when a macro cell base station transmits a CSI-RS in a fourth subframe, the CSI-RS may be a Paging channel of the macro cell base station (for example, when the Paging channel occupies 0, 4, 5) , 9 subframes or when occupying the 4th and 9th subframes) cause interference, but the CSI-RS does not interfere with the macro cell base station.
  • the common channel causes interference, and does not cause interference to the common channel of the pico-cell base station.
  • the common channel of the macro-cell base station does not interfere with the common channel of the pico-cell base station.
  • the CSI-RS may cause interference to the Paging channel of the macro cell base station, but the CSI-RS does not The other common channels of the macro cell base station cause interference, and do not cause interference to the common channel of the pico cell base station. Moreover, the common channel of the macro cell base station does not interfere with the common channel of the pico cell base station.
  • the transmission period of the CSI-RS may be 5 subframes, 10 subframes, 20 subframes or 40 subframes according to different application scenarios.
  • the transmission period of the CSI-RS is 10 subframes, 20 subframes, or 40 subframes
  • the macro cell base station is used for transmission.
  • the subframe of the CSI-RS may be the 4th subframe or the 9th subframe in the frame.
  • the subframe used by the macro cell base station to transmit the CSI-RS may be Is the 4th subframe and the 9th subframe in the frame.
  • Example Scenario 3 The interference of the CSI-RS of the macro cell base station to the Paging channel of the pico-cell base station in the 4th subframe can be tolerated
  • the Paging channel may occupy the ninth subframe, the fourth, the nine subframes, or the 0th, 4th, 5th, and 9th subframes in the frame.
  • the CSI-RS transmitted by the macro cell base station can interfere with the interference of the Paging channel in the 4th subframe, and the CSI-RS transmitted by the macro cell base station is not required to be in the other.
  • the paging channel on the subframe causes interference. In this case, the restriction on the subframe position at which the macro cell base station transmits the CSI-RS can be appropriately relaxed.
  • the pico-cell base station can shift the transmission frame backward by 2 or 3 subframes.
  • the transmission frame of the pico-cell base station can be shifted backward by 2 subframes, in this case, except for the third and/or in the preferred example above.
  • the macro cell base station may also transmit the CSI-RS on the sixth subframe.
  • FIG. 13 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the above modified embodiment.
  • the macro cell base station can also transmit on the sixth subframe.
  • CSI-RS When the CSI-RS is transmitted on the 6th subframe, there is interference of the CSI-RS of the macro cell base station to the Paging channel occupying the 4th subframe of the pico-cell base station.
  • the transmission configuration scheme that can coordinate the interference in the embodiment shown in FIG. 13 includes: the macro cell base station utilizes the transmission frame ( The third subframe and/or the eighth subframe in a transmission frame including 10 subframes as an example (determining whether the subframes 3 and 8 can be used simultaneously depending on the period) to transmit the CSI-RS; or using the transmission The sixth subframe in the frame.
  • the CSI-RS when a macro cell base station transmits a CSI-RS on a sixth subframe, the CSI-RS may be a Paging channel of the macro cell base station (for example, when the Paging channel occupies the 4th subframe)
  • the interference is caused, but the CSI-RS does not interfere with the common channel of the pico-cell base station, and does not interfere with other common channels of the macro-cell base station.
  • the common channel of the macro-cell base station does not interfere with the public of the pico-cell base station. channel.
  • the transmission frame of the pico-cell base station can be shifted backward by 3 subframes, in which case, except for the first example in the above preferred example
  • the macro cell base station may also transmit the CSI-RS on the 7th subframe.
  • the macro cell base station can also transmit the CSI-RS in the seventh subframe.
  • the transmission configuration scheme that can coordinate the interference in the embodiment shown in FIG. 14 includes: the macro cell base station utilizes the transmission frame ( The first subframe and/or the sixth subframe in a transmission frame including 10 subframes as an example (determining whether the subframes 1 and 6 can be used simultaneously depending on the period) to transmit the CSI-RS; or using the transmission The 7th subframe in the frame.
  • the CSI-RS when a macro cell base station transmits a CSI-RS on a seventh subframe, the CSI-RS may be a Paging channel of the macro cell base station (for example, when the Paging channel occupies the 4th subframe)
  • the interference is caused, but the CSI-RS does not interfere with the common channel of the pico-cell base station, and does not interfere with other common channels of the macro-cell base station.
  • the common channel of the macro-cell base station does not interfere with the public of the pico-cell base station. channel.
  • Example Scenario 4 Paging of a picocell base station can be tolerated by a common channel of a macrocell base station Channel interference
  • the transmission frame of the pico-cell base station can be shifted backward by 1 subframe.
  • the macro cell base station may also transmit the CSI-RS on the 2nd and / or 7th subframes or transmit the CSI-RS on the 3rd and / or 8th subframes.
  • the transmission configuration scheme that can coordinate the interference in the embodiment shown in FIG. 15 includes: Transmitting a CSI-RS by transmitting a frame (taking 10 subframes in one transmission frame as an example) to the second subframe and/or the seventh subframe (determining whether subframes 2 and 7 can be used simultaneously depending on the period); Or by using the third subframe and/or the eighth subframe in the transmission frame (taking 10 subframes in one transmission frame as an example) (depending on the period, it is determined whether subframes 3 and 8 can be used at the same time).
  • 15 is a diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the modified embodiment.
  • the transmission frame of the pico-cell base station is shifted backward by one subframe, and thus, the macro-cell base station occupies the common channel of the 0th subframe (for example, PBCH channel, PSS channel, SSS channel, etc.) Interference may be caused to the Paging channel occupying the ninth subframe of the pico-cell base station; and the common channel (for example, PSS channel, SSS channel, SIB1 channel, etc.) occupying the 5th subframe of the macro-cell base station may be used for the pico-cell base station
  • the Paging channel occupying the 4th subframe causes interference.
  • the transmission period of the CSI-RS may be 5 subframes, 10 subframes, 20 subframes or 40 subframes according to different application scenarios.
  • the subframe used by the macro cell base station to transmit the CSI-RS may be the 2nd, 3rd, and 3rd in the frame. 7 or 8 subframes Up, to meet the cycle requirements of CSI-RS transmission.
  • the subframe used by the macro cell base station to transmit the CSI-RS may be the third subframe and the eighth subframe in the frame to satisfy the CSI.
  • an embodiment of the present invention also provides a corresponding device.
  • Figure 16a illustrates an apparatus for coordinating interference in accordance with one embodiment of the present invention.
  • the apparatus 1600a for coordinating interference includes an interference coordination information generating section 1602a.
  • the apparatus 1600a shown in Fig. 16a may be disposed at the macro cell base station and may generate interference coordination information related to the CSI-RS and transmit it to the pico cell base station.
  • the interference coordination information generating unit 1602a may collect configuration information related to the CSI-RS, and send the configuration information as interference coordination information to the relevant pico through an interface between the base stations (eg, an X2 interface). Cell base station.
  • the base stations eg, an X2 interface.
  • Figure 16b illustrates an apparatus for coordinating interference in accordance with another embodiment of the present invention.
  • the apparatus for coordinating interference may include an interference coordination information receiving section 1602b and an interference coordination information transmitting section 1604b.
  • the interference coordination information receiving unit 1602b may receive interference coordination information related to the CSI-RS of the macro cell base station from the macro cell base station in the communication system.
  • the interference coordination information transmitting unit 1604b may perform CSI-RS-related interference received from the macro cell base station by communication signaling (for example, radio resource control signaling, that is, RRC signaling) between the terminal and the base station.
  • the coordination information is sent to the terminal served by the picocell base station.
  • the apparatus 1600b that transmits the interference coordination information according to the present embodiment can transmit the interference coordination information related to the CSI-RS to the terminal, thereby facilitating interference coordination.
  • the device 1600b shown in Figure 16b can be placed at the picocell base station.
  • the CSI-RS-related interference coordination information collected by the macro cell base station and transmitted by the pico cell to the terminal may include, for example, a CSI-RS cycle, a CSI-RS sub-period Frame position, time-frequency resource location of CSI-RS, transmission symbol of CSI-RS, and transmission power of CSI-RS.
  • the information related to the CSI-RS transmission can be provided to the terminal through the above-described information related to the CSI-RS.
  • the terminal can also eliminate information from the received information based on such interference coordination information related to the CSI-RS.
  • Figure 17 shows a schematic diagram of an apparatus for coordinating interference in accordance with one embodiment of the present invention.
  • the interference coordination apparatus 1700 includes: a receiving unit 1702; and a canceling unit 1704.
  • the receiving unit 1702 may receive the CSI-RS-related interference coordination information collected by the macro cell base station from the pico-cell base station.
  • the elimination section 1704 can eliminate the interference caused by the CSI-RS from the received information based on the received interference coordination message.
  • the interference coordination apparatus 1700 can eliminate interference caused by the macro cell to the pico cell. More specifically, the interference caused by the macro cell base station transmission CSI-RS to the pico cell can be eliminated.
  • the eliminating portion may include an interference position determining portion, a determining portion, and an interference canceling portion.
  • Figure 18 shows a schematic view of a cancellation portion in accordance with one embodiment of the present invention.
  • the canceling unit 1800 includes an interference position confirming unit 1802, a determining unit 1804, and an interference canceling unit 1806.
  • the interference position determining unit 1802 can determine the interference position based on the interference coordination information from the receiving unit.
  • the interference location determining unit 1802 may determine the macro according to the period of the CSI-RS, the subframe position of the CSI-RS, and the time-frequency resource location of the CSI-RS in the interference coordination information related to the CSI-RS.
  • the cell base station transmits the subframe position of the CSI-RS. In this way, the interference location can be determined.
  • the judging unit 1804 can determine whether there is resource scheduling at the interference location.
  • the judging unit 1804 finds that there is no information transmission at the interference position, it can be determined that there is no resource scheduling at the interference position and no processing is performed.
  • the determination unit 1804 finds that there is information transmission at the interference position, the determination unit 1804 can determine that there is resource scheduling at the interference position and notify the interference cancellation unit 1806 to perform processing.
  • the interference cancellation unit 1806 can eliminate the influence of the interference from the received signal based on the interference coordination information.
  • the interference cancellation unit 1806 may further determine the interference size according to the CSI-RS transmission symbol and the transmission power of the CSI-RS in the interference coordination information, and based on the determined interference size from the interference location. Eliminate the effects of interference in the received signal.
  • the terminal can eliminate the influence caused by the transmission of the CSI-RS by the macro cell base station from the received information, thereby ensuring the quality of information reception.
  • the apparatus for interference coordination according to the above embodiment can eliminate the influence of interference from the received signal based on the interference coordination information from the base station side. That is to say, the apparatus for interference coordination according to the above embodiment can eliminate the interference of the macro cell base station transmitting the CSI-RS to the pico cell.
  • the apparatus provided above is merely an example, and the present invention is not limited thereto, and in another embodiment of the present invention, another apparatus for coordinating interference is provided.
  • Figure 19 illustrates an apparatus for coordinating interference in accordance with another embodiment of the present invention.
  • the apparatus may include a translating portion 1902 and a selection portion 1904.
  • the panning section 1904 may shift the transmission frame of the pico-cell base station backward based on the frame structure of the macro-cell base station, and the selecting section 1904 may translate the length of the transmission frame backwards based on the length of the pico-cell base station from the macro cell.
  • the CSI-RS subframe is selected for transmission in the transmission frame of the base station to transmit the CSI-RS.
  • the processing by the translation unit 1902 and the selection unit 1904 is such that: the subframe for transmitting the CSI-RS selected by the selection unit 1902 is at least partially not used with the subframe and the pico-cell base station used by the macro-cell base station to transmit the common channel.
  • the subframes for transmitting the common channel overlap; and the subframes used by the macro cell base station to transmit the common channel are at least partially not overlapped with the subframes used by the pico-cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico-cell base station backward by one subframe, and the selection unit may select the third subframe and/or the eighth of the transmission frame of the macro-cell base station. Subframes to transmit CSI-RS.
  • FIG. 7 is a schematic diagram showing a transmission frame of a macro cell base station and a transmission frame of a pico cell base station according to the embodiment.
  • the subframe for transmitting the CSI-RS of the selected macro cell base station is not overlapped with the subframe used by the macro cell base station to transmit the common channel and the subframe used by the pico cell base station to transmit the common channel;
  • the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico-cell base station backward by 3 subframes, and the selection unit may select the first subframe and/or the transmission frame of the macro-cell base station. 6 subframes or selection to transmit CSI-RS.
  • FIG. 8 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the embodiment.
  • the subframe for transmitting the CSI-RS of the selected macro cell base station is not overlapped with the subframe used by the macro cell base station to transmit the common channel and the subframe used by the pico cell base station to transmit the common channel;
  • the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the interference of the common channel of the macro cell base station to the common channel of the pico cell base station and the interference of the CSI-RS of the macro cell to the common channel of the macro cell base station and the common cell of the micro cell base station can be completely eliminated.
  • the translation unit may shift the transmission frame of the pico-cell base station backward by 2 subframes, and the selection unit may select the second subframe or the transmission frame from the transmission frame of the macro-cell base station. 6 subframes to transmit CSI-RS.
  • FIG. 9 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the embodiment.
  • the subframe of the selected macro cell base station for transmitting the CSI-RS does not overlap with the subframe used by the macro cell base station to transmit the common channel, and is partially not used with the pico cell base station for transmitting the common channel.
  • the subframes overlap; and the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico cell base station backward by 3 subframes, and the selection unit may select the third subframe of the transmission frame of the macro cell base station or The 7th subframe is used to transmit the CSI-RS.
  • FIG. 10 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the embodiment.
  • the selected subframe of the macro cell base station for transmitting the CSI-RS does not overlap with the subframe used by the macro cell base station to transmit the common channel, and is partially not used by the pico cell base station for transmitting the common channel.
  • the subframes overlap; and the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico-cell base station backward by 2 subframes, and the selection unit may select the 4th subframe of the transmission frame of the macro-cell base station and / or the ninth subframe to transmit CSI-RS.
  • FIG. 11 is a schematic diagram showing a transmission frame of a macro cell base station and a transmission frame of a pico cell base station according to the embodiment.
  • the subframes used by the selected macro cell base station to transmit the CSI-RS are partially not overlapped with the subframe used by the macro cell base station to transmit the common channel, and are not used by the pico cell base station to transmit the common channel.
  • the subframes overlap; and the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico-cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico-cell base station backward by 3 subframes, and the selection unit selects the 4th subframe of the transmission frame of the macro-cell base station. And/or the ninth subframe to transmit the CSI-RS.
  • FIG. 12 is a schematic diagram showing a transmission frame of a macro cell base station and a transmission frame of a pico cell base station according to the embodiment.
  • the selected subframe of the macro cell base station for transmitting the CSI-RS is partially not overlapped with the subframe used by the macro cell base station to transmit the common channel, and is not used for transmitting the public with the pico cell base station.
  • the subframes of the channel overlap; and the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico-cell base station backward by 2 subframes, and the selection unit selects the 6th subframe of the transmission frame of the macro-cell base station to transmit.
  • CSI-RS CSI-RS
  • FIG. 13 is a schematic diagram showing a transmission frame of a macrocell base station and a transmission frame of a picocell base station according to the embodiment.
  • the selected subframe of the macro cell base station for transmitting the CSI-RS does not overlap with the subframe used by the macro cell base station for transmitting the common channel, and is partially not used by the picocell base station for transmitting the common channel.
  • the subframes overlap; and the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico cell base station backward by 3 subframes, and the selection unit may select the 7th subframe of the transmission frame of the macro cell base station. Transmit CSI-RS.
  • the subframe selected by the macro cell base station for transmitting the CSI-RS is not overlapped with the subframe used by the macro cell base station for transmitting the common channel, and partially not used by the picocell base station for transmitting the common channel.
  • the subframes overlap; and the subframe used by the macro cell base station to transmit the common channel does not overlap with the subframe used by the pico cell base station to transmit the common channel.
  • the translation unit may shift the transmission frame of the pico-cell base station backward by one subframe, and the selection unit may select the third subframe in the transmission frame of the macro-cell base station and/or Or transmit the CSI-RS in the 8th subframe or 2 subframes and/or 7th subframe in the selected frame.
  • the subframe selected by the macro cell base station for transmitting the CSI-RS is not associated with the macro.
  • the subframe used by the cell base station to transmit the common channel overlaps and does not overlap with the subframe used by the pico-cell base station to transmit the common channel; the subframe used by the macro-cell base station to transmit the common channel is not partially used for transmitting the public with the pico-cell base station.
  • the sub-frames of the channel overlap.
  • One embodiment of the present invention provides a base station, which may include means for coordinating interference in accordance with an embodiment described in connection with FIG.
  • An embodiment of the present invention also provides a terminal, which may include means for coordinating interference in accordance with an embodiment described in connection with Figures 17 and 18.
  • An embodiment of the present invention also provides a communication system including at least one of the above-described base stations and at least one of the above-described terminals. Further, an embodiment of the present invention also provides a base station, which may include means for coordinating interference in conjunction with the embodiment described in FIG.
  • an embodiment of the present invention also provides a communication system including at least one of the above-described base stations.
  • the present invention can be embodied as a system, method or computer program product. Accordingly, the present invention may be embodied in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or generally referred to herein as "circuit,” “module,” or “system.” "The combination of the software part and the hardware part. Furthermore, the invention can take the form of a computer program product embodied in any tangible medium of expression, which contains computer-available program code.
  • the computer readable medium can be a computer readable signal medium or a computer readable storage medium, such as, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system. , device, device or propagation medium, or any suitable combination of the foregoing. More specific examples (non-exhaustive lists) of computer readable storage media include the following: Electrical connections with one or more wires, portable Computer disk, hard disk, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash), optical fiber, portable compact disk read only memory (CD-ROM), light A memory device, a magnetic memory device, or any suitable combination of the foregoing.
  • a computer readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.
  • a computer readable signal medium may comprise a data signal with computer readable program code, e.g., propagated in the baseband or as part of a carrier. Such a propagated signal can take any suitable form including, but not limited to, electromagnetic, optical, or any suitable combination thereof.
  • the computer readable signal medium may be any computer other than a computer readable storage medium that can communicate, propagate, or transport a program for use by or in connection with the instruction execution system, apparatus, or device. Readable media.
  • Program code embodied on a computer readable medium can be transmitted using any suitable medium, including but not limited to - wireless, wireline, optical cable, radio frequency, etc., or any suitable combination of the foregoing.
  • Computer program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++. Also included are conventional procedural programming languages such as the "C" programming language or similar programming languages.
  • the program code can be executed entirely on the user's computing, partly on the user's computer, as a stand-alone software package, partly on the user's computer, partly on a remote computer, or entirely on a remote computer or server. carried out.
  • the remote computer can be connected to the user's computer via any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to the external computer (e.g., via an Internet using an Internet service provider).
  • LAN local area network
  • WAN wide area network
  • Internet service provider e.g., via an Internet using an Internet service provider
  • 20 is a block diagram showing an exemplary structure of a computer in which the apparatus and method of the present invention are implemented.
  • the central processing unit (CPU) 2001 executes various processes in accordance with a program stored in the read-only mapping data (ROM) 2002 or a program loaded from the storage portion 2008 to the random access mapping data (RAM) 2003. .
  • ROM read-only mapping data
  • RAM random access mapping data
  • data required when the CPU 2001 performs various processes and the like is also stored as needed.
  • the CPU 2001, the ROM 2002, and the RAM 2003 are connected to each other via the bus 2004.
  • Input/output interface 2005 is also connected to bus 2004.
  • the following components are connected to the input/output interface 2005: an input portion 2006, including a keyboard, a mouse, etc.; an output portion 2007, including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker And so on; the storage section 2008, including the hard disk and the like; and the communication section 2009, including a network interface card such as a LAN card, a modem, and the like.
  • the communication section 2009 performs communication processing via a network such as the Internet.
  • Drive 2010 is also connected to input/output interface 2005 as needed.
  • the detachable medium 2011 such as a magnetic disk, an optical disk, a magneto-optical disk, semiconductor mapping data, and the like are installed on the drive 2010 as needed, so that the computer program read therefrom is installed into the storage portion 2008 as needed.
  • such a storage medium is not limited to the removable medium 2011 shown in FIG. 20 in which a program is stored and distributed separately from the method to provide a program to a user.
  • the detachable medium 2011 include a magnetic disk, an optical disk (including a CD-ROM and a digital versatile disk (DVD)), a magneto-optical disk (including a mini disk (MD), and semiconductor mapped data.
  • the storage medium may It is a ROM 2002, a hard disk included in the storage section 2008, and the like, in which programs are stored, and distributed to the user together with the method including them.

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Description

对干扰进行协调的方法和装置及通信系统、 移动台和基站 技术领域
[01] 本发明总体上涉及通信领域。具体而言，涉及在通信系统中例如在 LTE-A ( Long Term Evolution-Advanced )系统中对干扰进行协调的方法和装置以及相 应的通信系统、 移动台、 基站。 背景技术
[02] 在下一代无线通信系统高级长期演进方案 （即 LTE-A ) 中， 引入了异构 网络的概念。 LTE-A的异构网路系统可以包括宏小区（Macro Cell )、 毫微微小 区（Femto Cdl )、微微小区（Pico Cell )、 远端无线头（RRH )、 中继器（Relay ) 等。 图 1是示出包括上述的宏小区、 毫微微小区、 微微小区等节点的异构通信 系统的示意图。
[03] 通过新部署的无线节点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。
[04] 但是， 新部署的节点可能会对原来部署的小区的用户带来干扰， 甚至造 成某些覆盖的孔洞。
[05] 例如， 在宏小区和微微小区混合的场景下， 为了提高小区容量， 往往采 用小区扩展技术。 具体说来， 通过改变移动台的小区选择准则， 将部分属于宏 小区服务的移动台改变到属于微微小区服务。图 2示出了在宏小区和微微小区 混合的场景下从宏小区服务改变到微微小区服务的移动台所受到的干扰。
[06] 对于经受小区扩展处理的移动台， 在通过微微小区进行通信时可能会受 到宏小区干扰。
[07] 例如， 宏小区的用于传播广播信息的公共信道的传输可能会影响微微小 区的用于传播广播信息的公共信道的传输， 宏小区的信道状态信息参考符号 ( CSI-RS )的传输也可能会影响微微小区的公共信道。尤其是在宏小区采用了 能量提升的技术的情况下， 这些干扰更为明显。
[08] 其中， CSI-RS在物理传输资源中的位置取决于系统配置； 而公共信道的 物理传输资源往往是预定的，所述公共信道是指用于传播通信过程中需要接收 的广播信息的信道， 公共信道例如可以包括： 广播信道（PBCH )、 同步信道 ( PSS/SSS 主系统信息块（SIB1 )、 寻呼信道（PCH )。 [09] 例如， 表 1示出了频分双工 （FDD ) 系统中公共信道和 CSR-RS传输的 物理传输资源。
Figure imgf000004_0001
[10] 从表 1中可以看出， 对于通常包括 10个子帧的帧来说， 公共信道占用第 0、 4、 5、 9个子帧。 具体来说， PBCH信道占用第 0个子帧， PSS信道占用第 0和 5子帧， SSS信道占用第 0和 5子帧， SIB1信道占用第 5子帧， 而 Paging 信道取决于不同配置可以占用第 0、 4、 5、 9子帧、 第 9子帧或第 4、 9子帧。
[11] 此外， 表 1还示出了 CSI-RS和公共信道的传输周期以及 CSI-RS和公共 信道在资源块中的 OFDM符号位置。
[12] 如果宏小区基站的用于传输 CSI-RS的子帧或者宏小区基站的公共信道占 用的子帧与微微小区的用于传播广播信息的公共信道占用的子帧相重叠，宏小 区可能会对微微小区造成干扰， 影响微微小区公共信道的可靠传输。 此外， 如 果宏小区基站的用于传输 CSI-RS的子帧与宏小区基站自身用于公共信道的子 帧重叠， 则宏小区基站的 CSI-RS的传输也会对其自身的公共信道造成影响。
发明内容
[13] 因而， 本发明的一个目的在于消除以下干扰之一： 由 CSI-RS所导致的干 扰（包括对宏小区的影响和对微微小区的影响 )以及宏小区公共信道对微微小 置、 以及相关的通信系统、 移动台和基站。
[14] 通过根据本发明实施例的对干扰进行协调的方法和装置， 在相关的通信 系统、 移动台和基站上， 至少可以部分地消除 CSI-RS所导致的干扰以及至少 部分地消除宏小区公共信道对微微小区造成的干扰。
[15] 本发明的一个实施例提供了一种在通信系统中对干扰进行协调的方法， 包括：通信系统中的宏小区基站收集与所述宏小区基站的信道状态信息参考符 号有关的干扰协调信息并发送给微微小区基站；通信系统中的微微小区基站将 所述干扰协调信息发送给所述微微小区基站所服务的终端，以便根据所述干扰 协调信息来对宏小区对于微微小区造成的干扰进行协调。
[16] 本发明的另一个实施例提供了一种在通信系统中对干扰进行协调的方 法， 包括： 通信系统中的终端从为其提供服务的微微小区基站接收与宏小区基 站的信道状态信息参考符号有关的干扰协调信息；通信系统中的终端根据所述 干扰协调信息从接收信息中消除干扰信息，以便消除宏小区对于微微小区造成 的干扰。
[17] 本发明的另一个实施例还提供了一种在通信系统中对干扰进行协调的方 法， 包括： 通信系统中的宏小区基站基于自身的帧结构通知通信系统中的微微 小区基站将所述微微小区基站的传输帧向后平移；基于所述微微小区基站向后 平移传输帧的长度，所述宏小区基站在自身的传输帧中选出用于传输信道状态 信息参考符号的子帧来传输信道状态信息参考符号； 其中， 所述宏小区基站选 出的用于传输信道状态信息参考符号的子帧至少部分地不与所述宏小区基站 用于传输公共信道的子帧和所述微微小区基站用于传输公共信道的子帧重叠； 且所述宏小区基站用于传输公共信道的子帧至少部分地不与所述微微小区基 站用于传输公共信道的子帧重叠。
[18] 本发明的一个实施例提供了一种在通信系统中对干扰进行协调的装置， 包括： 干扰协调信息生成部，被配置成生成与所述装置的信道状态信息参考符 号有关的干扰协调信息并发送给通信系统中的微微小区基站； 其中， 所述干扰 协调信息被发送给所述微微小区基站所服务的终端以便实现干扰协调，以便根 据所述干扰协调信息来对宏小区对于微微小区造成的干扰进行协调。 [19] 本发明的另一个实施例提供了一种在通信系统中对干扰进行协调的装 置， 包括： 干扰协调信息接收部， 被配置成从通信系统中的宏小区基站接收与 所述宏小区基站的信道状态信息参考符号有关的干扰协调信息；干扰协调信息 发送部，被配置成将所述干扰协调信息发送给所述装置所服务的终端， 以便根 据所述干扰协调信息来对宏小区对于与所述装置对应的微微小区造成的干扰 进行协调。
[20] 本发明的另一个实施例提供了一种在通信系统中对干扰进行协调装置， 包括： 接收部，被配置成从通信系统中的微微小区基站接收与通信系统中的宏 小区基站的信道状态信息参考符号有关的干扰协调信息； 消除部，被配置成根 据所述干扰协调信息从接收信息中消除干扰信息，以便消除宏小区对于微微小 区造成的干扰。
[21] 本发明的另一个实施例还提供了一种在通信系统中对干扰进行协调的装 置， 包括： 平移部， 被配置成基于通信系统中的宏小区基站的帧结构来将通信 系统中的微微小区基站的传输帧向后平移； 选择部，被配置成基于所述微微小 区基站向后平移传输帧的长度，从所述宏小区基站的传输帧中选出用于传输信 道状态信息参考符号子帧来传输信道状态信息参考符号； 其中， 所述选择部选 出的用于传输信道状态信息参考符号的子帧至少部分地不与所述宏小区基站 用于传输公共信道的子帧和所述微微小区基站用于传输公共信道的子帧重叠； 且所述宏小区基站用于传输公共信道的子帧至少部分地不与所述微微小区基 站用于传输公共信道的子帧重叠。
[22] 此外， 本发明的实施例还提供了相应的基站和终端以及包括该基站和终 端的通信系统。 附图说明
[23] 图 1是示出异构通信系统结构的示意图；
[24] 图 2示出了在宏小区和微微小区混合的场景下从宏小区服务改变到微微 小区服务的移动台所受到的干扰；
[25] 图 3示出了根据本发明的一个实施例的对干扰进行协调的方法的流程图； [26] 图 4示出了根据本发明的一个实施例的对干扰进行协调的方法的流程图； [27] 图 5是示出根据本发明的一个实施例的终端利用干扰协调消息来消除干 扰的处理的流程图；
[28] 图 6示出了根据本发明的另一个实施例的对干扰进行协调的方法的流程 图；
[29] 图 7是示出根据本发明的一个优选实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[30] 图 8是示出根据本发明的一个优选实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[31] 图 9是示出根据本发明的一个改型实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[32] 图 10是示出根据本发明的一个改型实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[33] 图 11是示出根据本发明的一个改型实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[34] 图 12是示出根据本发明的一个改型实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[35] 图 13是示出根据本发明的一个改型实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[36] 图 14是示出根据本发明的一个改型实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[37] 图 15是示出根据本发明的一个改型实施例的宏小区基站的传输帧和微微 小区基站的传输帧的示意图；
[38] 图 16a、 图 16b分别示出了根据本发明实施例的对干扰进行协调的装置；
[39] 图 17 示出了根据本发明的一个实施例的对干扰进行协调的装置的示意 图；
[40] 图 18示出了根据本发明一个实施例的消除部的示意图；
[41] 图 19示出了根据本发明另一个实施例的对干扰进行协调的装置； 以及
[42] 图 20是示出其中实现本发明的设备和方法的计算机的示例性结构的框 图。 具体实施方式
[43] 下面参照附图来说明本发明的实施例。 应当注意， 为了清楚的目的， 附 图和说明中省略了与本发明无关的、本领域普通技术人员已知的部件和处理的 表示和描述。
[44] 在以下的描述中， 以 LTE-A无线通信系统为例进行说明， 但是显然本发 明不限于此，本领域技术人员可以认识到本文所公开的发明构思也可以应用于 其它已有或将来将要出现的通信系统中。
[45] 如图 3 所示， 根据本发明的一个实施例的对干扰进行协调的方法包括步 骤 S302和步骤 S304。
[46] 在步骤 S302处， 宏小区基站收集与 CSI-RS有关的干扰协调信息并发送 给微微小区基站。
[47] 具体来说， 宏小区基站收集与 CSI-RS有关的配置信息， 并通过基站之间 的接口 （例如， X2接口）将这些配置信息作为干扰协调信息发送给相关的微 微小区基站。
[48] 接着， 在步骤 S304处， 微微小区基站将接收到的干扰协调信息发送给该 微微小区基站所服务的终端。
[49] 具体来说， 微微小区基站可以通过终端与基站之间的通信信令（例如， 无线资源控制信令， 即 RRC信令）来将从宏小区基站接收到的与 CSI-RS有关 的干扰协调信息发送给该微微小区基站服务的终端。
[50] 这样， 可以将与宏小区基站的 CSI-RS有关的干扰协调信息发送至微微小 区基站所服务的终端， 有助于实现干扰协调。
[51] 在本发明的一个具体实施例中， 由宏小区基站收集并由微微小区基站发 送到该微微小区基站服务的终端的干扰协调信息例如可以包括： CSI-RS 的周 期， CSI-RS 的子帧位置， CSI-RS 的时频资源位置， CSI-RS 的传输符号以及 CSI-RS的传输功率。
[52] 其中， CSI-RS的周期、 CSI-RS的子帧位置、 CSI-RS的时频资源位置是 与 CSI-RS传输位置有关的信息； 而 CSI-RS的传输符号是与传输形式有关的 信息并可以基于时隙号、 小区标识符和循环前缀信息来确定； 而 CSI-RS的传 输功率是与传输功率有关的信息。 [53] 通过上述的与 CSI-RS有关的信息， 可以向终端提供与 CSI-RS传输有关 的信息。 因而， 终端也可以基于这种与 CSI-RS有关的干扰协调信息来从接收 信息中消除信息。
[54] 图 4示出了根据本发明的一个实施例的在通信系统中对干扰进行协调的 方法的流程图。
[55] 如图 4所示， 在步骤 S402处， 终端接收干扰协调信息。
[56] 具体来说， 终端从为该终端提供服务的微微小区基站接收由通信系统中 的宏小区基站收集的与 CSI-RS有关的干扰协调信息。
[57] 接着， 在步骤 S404处， 终端基于接收的干扰协调消息从接收信息中消除 由 CSI-RS引起的干扰。
[58] 通过上述方法， 终端可以消除宏小区基站传输 CSI-RS对微微小区造成的 干扰。
[59] 在图 4所示的根据本发明实施例的方法中， 与 CSI-RS有关的干扰协调信 息可以是图 3所示方法中由宏小区基站收集的干扰协调消息， 例如， 其可以包 括： CSI-RS的周期， CSI-RS的子帧位置， CSI-RS的时频资源位置， CSI-RS 的传输符号以及 CSI-RS的传输功率。
[60] 根据本发明的一个实施例， 终端可以通过以下处理来利用干扰协调消息 消除 CSI-RS的干扰。
[61] 图 5是示出根据本发明一个实施例的终端利用干扰协调消息来消除干扰 的处理的流程图。
[62] 如图 5所示，在步骤 S502处，终端可以根据干扰协调信息来确定 CSI-RS 传输子帧的位置。
[63] 具体来说， 终端可以根据与 CSI-RS有关的干扰协调信息中的 CSI-RS的 周期、 CSI-RS 的子帧位置、 CSI-RS 的时频资源位置来确定宏小区基站传输 CSI-RS的子帧位置。 这样， 终端可以确定出干扰位置。
[64] 接着， 如图 5所示， 在步骤 S504处， 终端可以判断在该干扰位置上是否 存在资源调度。
[65] 具体来说， 如果终端发现在该干扰位置上没有针对该终端的信息传输， 终端可以判定在该干扰位置不存在资源调度并结束处理。 [66] 另一方面， 如果终端发现在该干扰位置上存在针对该终端的信息传输， 则终端可以判定在该干扰位置处存在资源调度并进行到步骤 S506。
[67] 在步骤 S506处， 终端可以根据与 CSI-RS有关的干扰协调信息从接收信 号中消除干扰的影响。
[68] 具体来说， 终端可以根据干扰协调信息中的 CSI-RS 传输符号、 CSI-RS 的传输功率来进一步确定出干扰大小，并基于确定出的干扰大小从在干扰位置 处的接收信号中消除干扰的影响。
[69] 这样， 终端可以从接收信息中消除由宏小区基站传输 CSI-RS所造成的影 响， 进而确保信息接收的质量。
[70] 在根据上述实施例的干扰协调的方法中， 终端基于来自基站侧的干扰协 调信息从接收信号中消除了干扰的影响。也就是说，在终端侧消除了宏小区基 站传输 CSI-RS对微微小区的干扰。
[71] 但是， 以上提供的方法仅为示例， 本发明不限于此， 在本发明的另一个 实施例中， 也可以从基站侧来消除或緩解宏小区基站对微微小区基站的干扰。
[72] 图 6示出了根据本发明的另一个实施例的对干扰进行协调的方法的流程 图。
[73] 如图 6所示， 根据该实施例的对干扰进行协调的方法包括向后平移子帧 的步骤 S602和选择用于传输 CSI-RS的子帧的步骤 S604。
[74] 具体来说，在根据该实施例的对干扰进行协调的处理中，在步骤 S602处， 宏小区基站可以根据宏小区基站的帧结构（具体来说，是公共信道占用的子帧 位置）来通知微微小区基站向后平移传输帧。 接着， 在步骤 S604处， 宏小区 基站可以根据微微小区基站的传输帧的平移长度来选择用于传输 CSI-RS的子 帧； 使得： 宏小区基站选出的用于传输 CSI-RS的子帧至少部分地不与宏小区 基站用于传输公共信道的子帧和微微小区基站用于传输公共信道的子帧重叠； 且宏小区基站用于传输公共信道的子帧至少部分地不与微微小区基站用于传 输公共信道的子帧重叠。
[75] 在上述的在基站侧实现的干扰协调处理中， 通过合理布置宏小区基站的 传输帧和微微小区基站的传输帧来避免宏小区对微微小区的干扰。 具体说来， 在布置宏小区基站的传输帧和微微小区基站的传输帧时，需要考虑以下的三个 限制。
[76] 1、 宏小区基站的用于传输 CSI-RS的子帧不与宏小区基站用于传输公共 信道的子帧重叠
[77] 参照表 1可以看出， 用于传输公共信道的子帧分别是帧中的第 0、 4、 5、 9个子帧。 因而， 为了满足第 1限制， 宏小区基站选择的用于传输 CSI-RS的 子帧不能是宏小区传输帧的第 0、 4、 5、 9个子帧， 以避免宏小区基站传输的 CSI-RS对宏小区基站自身的公共信道造成干扰。
[78] 2、 宏小区基站的用于传输 CSI-RS的子帧不与微微小区基站用于传输公 共信道的子帧重叠
[79] 参照表 1可以看出， 用于传输公共信道的子帧分别是帧中的第 0、 4、 5、 9个子帧。 因而， 为了满足第 2限制， 宏小区基站选择的用于传输 CSI-RS的 子帧不能与微微小区基站传输公共信道的子帧重叠， 以避免宏小区基站的 CSI-RS对微微小区的公共信道造成干扰。
[80] 3、 宏小区基站用于传输公共信道的子帧不与微微小区基站用于传输公共 信道的子帧重叠
[81] 如上所述， 宏小区基站和微微小区基站用于传输公共信道的子帧分别是 各自传输帧中的第 0、 4、 5、 9个子帧。 因而， 为了满足第 3限制， 可以平移 微微小区基站的传输帧，并且平移后的微微小区基站的用于传输公共信道的子 帧 （即平移后的帧中的第 0、 4、 5、 9子帧） 不能与宏小区基站的用于传输功 能信道的子帧重叠，以避免宏小区基站的公共信道对微微小区基站的公共信道 造成干扰。
[82] 可以满足上述三个限制的配置方式可以有很多种。 以下提供根据本发明 实施例的配置方式作为示例， 以说明如何避免或緩解宏小区传输 CSI-RS造成 的干扰以及宏小区的公共信道与微微小区的公共信道之间的干扰。但是， 这些 配置方式仅仅是示例， 本发明不限于此， 而是还可以根据实际应用情形进行各 种改变。
[83] 优选示例 1:
[84] 在本发明的一个优选实施例中， 宏小区基站可以根据自身的帧结构通知 微微小区基站将微微小区基站的传输帧向后平移 2个子帧，使得微微小区基站 的传输帧中被公共信道占用的子帧不与宏小区基站的传输帧中被公共信道占 用的子帧重叠。 而宏小区基站可以选择宏小区基站传输帧中的第 3个子帧和 / 或第 8个子帧来传输 CSI-RS,使得宏小区基站用于传输 CSI-RS的子帧不与微 微小区基站的公共信道占用的子帧重叠。
[85] 图 7是示出根据该优选实施例的宏小区基站的传输帧和微微小区基站的 传输帧的示意图。
[86] 在图 7中， 上方为宏小区基站的传输帧 （示出了 12个子帧， 其中第 0-9 个子帧构成了一个传输帧）， 下方为微微小区基站的传输帧 （类似地， 示出了 12个子帧， 其中第 0-9个子帧构成了一个传输帧）， 阴影部分分别代表用于宏 小区基站和微微小区基站的公共信道的子帧，在宏小区基站的传输帧中用于传 输 CSI-RS的子帧以椭圆标出。 此外， 图 7 (包括随后的帧结构的示意图 )所 示的传输帧的结构 （例如， 一个传输帧的长度为 10个子帧）仅仅作为示例， 但是本发明不限于此， 例如， 帧的长度还可以扩展到其它合适长度或者传输帧 中空子帧的位置也可以由系统进行其它的配置。此外， 图 7是为了阐明本发明 的发明构思而提供的， 其中以一个传输帧包括 10个子帧为例。 当然， 容易理 解，在一个传输帧包括更多子帧的或者一个传输帧单元包括多个传输帧的情况 下， 图 7示出的仅是传输帧单元块中的一个片段， 显然， 本发明的发明构思还 可以扩展到图中未完全示出的完整长度的传输帧单元中 （以下各图类似）。
[87] 在图 7中，宏小区基站的用于传输 CSI-RS的子帧或用于公共信道的子帧 可以对下方相应的微微小区基站的子帧造成干扰。例如， 当与宏小区基站的用 于传输 CSI-RS的子帧或用于公共信道的子帧对应的微微小区基站的子帧承载 公共信道时， 宏小区基站的 CSI-RS或宏小区基站的公共信道对微微小区基站 的公共信道造成了干扰。
[88] 如图 7所示， 宏小区基站可以根据自身的帧结构来通知微微小区基站的 将其传输帧向后平移 2个子帧，因而微微小区基站的传输帧中的第 0个子帧与 宏小区基站的传输帧的第 2个子帧重叠。
[89] 在微微小区基站的传输帧向后平移 2个子帧的情况下， 可以保证宏小区 基站的公共信道的子帧不与微微小区基站的公共信道的子帧重叠，由此可以避 免宏小区基站的公共信道对微微小区基站的公共信道的干扰。
[90] 在微微小区基站的传输帧向后平移 2个子帧的情况下， 当宏小区基站选 择在第 3个或第 8个子帧上传输 CSI-RS时， 传输 CSI-RS的子帧不与微微小 区基站用于传输公共信道的子帧重叠也不与宏小区基站自身用于传输公共信 道的子帧重叠， 由此可以避免宏小区基站传输 CSI-RS对宏小区基站的公共信 道和微小区基站的公共信道的干扰。
[91] 因而， 通过按图 7所示方式来平移微微小区基站的子帧和选择宏小区基 站用于传输 CSI-RS的子帧， 可以完全消除宏小区基站的公共信道对微微小区 基站的公共信道的干扰以及宏小区的 CSI-RS对宏小区基站的公共信道和微小 区基站的公共信道的干扰。
[92] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 7所示 实施例中可以实现对干扰进行协调的传输配置方案包括：宏小区基站利用传输 帧（以一个传输帧中包括 10个子帧为例）中的第 3个子帧和 /或第 8个子帧（取 决于周期而确定是否可以同时使用子帧 3和 8 )来传输 CSI-RS。
[93] 更具体地， 参见表 1可知， 根据不同的应用情形， CSI-RS的传输周期可 以是 5个子帧、 10个子帧、 20个子帧或 40个子帧。
[94] 例如，在 CSI-RS的传输周期是 10个子帧、 20个子帧或 40个子帧的情况 下， 宏小区基站用于传输 CSI-RS的子帧可以是帧中的第 3个子帧或第 8个子 帧以满足 CSI-RS传输周期的要求。
[95] 再例如， 在 CSI-RS的传输周期是 5个子帧的情况下， 宏小区基站用于传 输 CSI-RS的子帧可以是帧中的第 3个子帧和第 8个子帧以满足 CSI-RS传输 周期的要求。
[96] 优选示例 2:
[97] 在本发明的另一个优选实施例中， 宏小区基站可以根据自身的帧结构通 知微微小区基站将该微微小区基站的传输帧向后平移 3个子帧，使得微微小区 基站的传输帧中被公共信道占用的子帧不与宏小区基站的传输帧中被公共信 道占用的子帧重叠。而宏小区基站可以选择其传输帧中的第 1个子帧和 /或第 6 个子帧来传输 CSI-RS,使得宏小区基站用于传输 CSI-RS的子帧不与微微小区 基站的公共信道占用的子帧重叠。
[98] 图 8是示出根据该优选实施例的宏小区基站的传输帧和微微小区基站的 传输帧的示意图。 [99] 在图 8中， 与图 7类似， 上方为宏小区基站的包括 10个子帧的传输帧， 下方为微微小区基站的包括 10个子帧的传输帧， 阴影部分代表用于公共信道 的子帧， 在宏小区基站的传输帧中用于传输 CSI-RS的子帧以椭圆标出。
[100] 如图 8所示， 微微小区基站的传输帧向后平移了 3个子帧， 因而微微小 区基站的传输帧中的第 0个子帧与宏小区基站的传输帧的第 3个子帧重叠。
[101] 在微微小区基站的传输帧向后平移 3 个子帧的情况下， 可以保证宏小区 基站的公共信道的子帧不与微微小区基站的公共信道的子帧重叠，由此可以避 免宏小区基站的公共信道对微微小区基站的公共信道的干扰。
[102] 在微微小区基站的传输帧向后平移 3 个子帧的情况下， 当宏小区基站选 择在第 1个或第 6个子帧上传输 CSI-RS时， 传输 CSI-RS的子帧不与微微小 区基站用于传输公共信道的子帧重叠也不与宏小区基站自身用于传输公共信 道的子帧重叠。 由此可以避免宏小区基站传输 CSI-RS对宏小区基站的公共信 道和微小区基站的公共信道的干扰。
[103] 因而， 通过按图 8所示方式来平移微微小区基站的子帧和选择宏小区基 站用于传输 CSI-RS的子帧， 可以完全消除宏小区基站的公共信道对微微小区 基站的公共信道的干扰以及宏小区的 CSI-RS对宏小区基站的公共信道和微小 区基站的公共信道的干扰。
[104] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 8所示 实施例中可以实现对干扰进行协调的传输配置方案包括：宏小区基站利用传输 帧（以一个传输帧中包括 10个子帧为例）中的第 1个子帧和 /或第 6个子帧（取 决于周期而确定是否可以同时使用子帧 1和 6 )来传输 CSI-RS。
[105] 更具体地， 参见表 1可知， 根据不同的应用情形， CSI-RS的传输周期可 以是 5个子帧、 10个子帧、 20个子帧或 40个子帧。
[106] 例如，在 CSI-RS的传输周期是 10个子帧、 20个子帧或 40个子帧的情况 下， 宏小区基站用于传输 CSI-RS的子帧可以是帧中的第 1个或第 6个子帧以 满足 CSI-RS传输周期的要求。
[107] 再例如， 在 CSI-RS的传输周期是 5个子帧的情况下， 宏小区基站用于传 输 CSI-RS的子帧可以是帧中的第 1个和第 6个子帧以满足 CSI-RS传输周期 的要求。 [108] 通过上述优选实施例的平移和选择处理， 可以完全消除宏小区基站的 CSI-RS 的传输对宏小区的公共信道和微微小区的公共信道的干扰， 此外， 也 可以完全消除宏小区的公共信道对微微小区的公共信道的干扰。
[109] 然而， 上述优选实施例仅为示例， 本发明不限于此， 针对各种不同的应 用要求， 例如一些对干扰要求较为宽松的应用场景， 本发明的实施例也可以进 行适当的改动以具有更高的灵活性。
[110] 示例情形 1: 仅需要保证微微小区基站的 SIB1信道和 Paging信道不受 CSI-RS的干扰
[111] 在一些只需要保证微微小区基站的 SIB1信道和 Paging信道不受 CSI-RS 的干扰的应用中， 可以适当地放松对宏小区基站传输 CSI-RS的子帧位置的限 制。
[112] 结合上述的优选示例 1、 2可以看出， 为了保证宏小区基站的公共信道不 对微微小区基站的公共信道造成干扰，宏小区基站可以根据其自身的帧结构通 知微微小区基站将该微微小区基站的传输帧向后平移 2个或 3个子帧。
[113] 在本发明的一个改型实施例中，微微小区基站可以将其传输帧向后平移 2 个子帧， 在这种情况下， 除了上述优选示例 1中的第 3和 /或 8个子帧之外， 宏小区基站还可以在第 2个子帧或者在第 6个子帧上传输 CSI-RS。
[114] 图 9是示出根据上述改型实施例的宏小区基站的传输帧和微微小区基站 的传输帧的示意图。 如图 9所示， 除了上述优选示例中的第 3和 /或 8个子帧 之外， 宏小区基站还可以在第 2个子帧或者在第 6个子帧上传输 CSI-RS以便 确保微微小区基站的 SIB1信道和 Paging信道不受宏小区基站传输的 CSI-RS 的干扰。 在图 9中， 可以同时用来传输 CSI-RS的子帧 （例如第 3和 8子帧） 以相同大小的椭圆标出， 而不能同时用来传输 CSI-RS的子帧（例如第 2子帧、 第 6子帧） 以不同大小的椭圆标出 （以下各图类似）。
[115] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 9所示 的实施例中可以实现对干扰进行协调的传输配置方案包括：宏小区基站利用传 输帧（以一个传输帧中包括 10个子帧为例）中的第 3个子帧和 /或第 8个子帧 (取决于周期而确定是否可以同时使用子帧 3和 8 )来传输 CSI-RS;或者利用 第 2个子帧或第 6个子帧来传输 CSI-RS。
[116] 参见表 1 , SIB1信道占用帧中的第 5个子帧， 而 Paging信道可以占用第 0、 4、 5、 9子帧、 第 9子帧或第 4、 9子帧。 在本实施例中， 可以将 Paging 信道配置成占用第 9子帧或第 4、 9子帧。
[117] 如图 9所示， 当宏小区基站在第 2个子帧上传输 CSI-RS时， 宏小区基站 的 CSI-RS的传输可能会对微微小区基站的第 0个子帧造成干扰。 在本实施例 中， SIB1信道没有占用第 0个子帧且 Paging信道也可以不占用第 0个子帧（在 Paging信道被配置成占用第 9子帧或第 4、 9子帧的情况下）， 因而， 可以确保 微微小区基站的 SIB1信道和 Paging信道不会受到宏小区基站传输的 CSI-RS 的干扰。
[118] 类似地， 如图 9所示， 当宏小区基站在第 6个子帧上传输 CSI-RS时， 宏 小区基站的 CSI-RS的传输可能会对微微小区基站的第 4个子帧造成干扰。 在 本实施例中， SIB1信道没有占用第 4个子帧且 Paging信道也可以不占用第 4 个子帧（在 Paging信道被配置成占用第 9子帧情况下）， 因而， 可以确保微微 小区基站的 SIB1信道和 Paging信道不受到宏小区基站传输的 CSI-RS的干扰。
[119] 如上所述，在本实施例中，当宏小区基站在第 2个子帧上传输 CSI-RS时， 宏小区基站用于传输 CSI-RS的第 2个子帧与微微小区基站的部分公共信道（即 PBCH信道、 PSS信道、 SSS信道） 占用的第 0个子帧重叠， 即对这些公共信 道造成了干扰。
[120] 在本发明的一个优选实施例中， 可以通过调整 CSI-RS符号位的方式来緩 解 CSI-RS对上述公共信道的干扰。
[121] 参见表 1可以看出， PBCH信道、 PSS信道、 SSS信道在一个资源块中的 OFDM符号位置可以分别是（7、 8、 9、 10 )、 6、 5。
[122] 在该优选实施例中， 当宏小区基站在第 2个子帧上传输 CSI-RS时， 宏小 区基站可以在资源块的 12、 13个符号位传输 CSI-RS, 即在与公共信道在资源 块中的符号位置不同的位置处传输 CSI-RS。从而可以緩解对 PBCH信道、 PSS 信道、 SSS信道的干扰。
[123] 针对上述的示例情形 1 , 在本发明的另一个改型实施例中， 微微小区基站 的传输帧也可以向后平移 3个子帧，在这种情况下， 除了上述优选示例中的第 1和 /或 6个子帧之外，宏小区基站还可以在第 3个子帧或者在第 7个子帧上传 输 CSI-RS。
[124] 图 10是示出根据上述改型实施例的宏小区基站的传输帧和微微小区基站 的传输帧的示意图。 如图 10所示， 除了上述优选示例中的第 1和 /或 6个子帧 之外， 宏小区基站还可以在第 3个子帧或者在第 7个子帧上传输 CSI-RS以便 确保微微小区基站的 SIB1信道和 Paging信道不受宏小区基站传输的 CSI-RS 的干扰。
[125] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 10所 示的实施例中， 可以实现对干扰进行协调的传输配置方案包括： 宏小区基站利 用传输帧（以一个传输帧中包括 10个子帧为例）中的第 1个子帧和 /或第 6个 子帧（取决于周期而确定是否可以同时使用子帧 1和 6 )来传输 CSI-RS; 或者 利用第 3个子帧或第 7个子帧来传输 CSI-RS。
[126] 参见表 1 , SIB1信道占用帧中的第 5个子帧， 而 Paging信道可以占用第 0、 4、 5、 9子帧、第 9子帧或第 4、 9子帧。在本实施例中，优选地可以将 Paging 信道配置成占用第 9子帧或第 4、 9子帧。
[127] 如图 10所示， 当宏小区基站在第 3个子帧上传输 CSI-RS时， 宏小区基 站的 CSI-RS的传输可能会对微微小区基站的第 0个子帧造成干扰。 在本实施 例中， SIB1信道没有占用第 0个子帧且 Paging信道也可以不占用第 0个子帧 (在 Paging信道被配置成占用第 9子帧或第 4、 9子帧的情况下）， 因而， 可 以确保微微小区基站的 SIB1信道和 Paging信道不会受到宏小区基站传输的 CSI-RS的干扰。
[128] 如图 10所示， 当宏小区基站在第 7个子帧上传输 CSI-RS时， 宏小区基 站的 CSI-RS的传输可能会对微微小区基站的第 4个子帧造成干扰。 在本实施 例中， SIB1信道没有占用第 4个子帧且 Paging信道也可以不占用第 4个子帧 (在 Paging信道被配置成占用第 9子帧情况下）， 因而， 可以确保微微小区基 站的 SIB1信道和 Paging信道不会受到宏小区基站传输的 CSI-RS的干扰。
[129] 如上所述，在本实施例中，当宏小区基站在第 3个子帧上传输 CSI-RS时， 可能会对微微小区基站的第 0个子帧 （即 PBCH信道、 PSS信道、 SSS信道 ) 造成干扰。
[130] 在本发明的一个优选实施例中， 可以通过调整 CSI-RS符号位的方式来緩 解 CSI-RS对上述公共信道的干扰。
[131] 参见表 1可以看出， PBCH信道、 PSS信道、 SSS信道在一个资源块中的 OFDM符号位置可以分别是（7、 8、 9、 10 )、 6、 5。 [132] 因而， 为了緩解 CSI-RS对上述公共信道的干扰， 在该优选实施例中， 当 宏小区基站在第 3个子帧上传输 CSI-RS时， 宏小区基站可以在资源块的 12、 13个符号位传输 CSI-RS, 即在与公共信道在资源块中的符号位置不同的位置 处传输 CSI-RS, 以緩解对 PBCH信道、 PSS信道、 SSS信道的干扰。
[133] 示例情形 2: 可以容忍宏小区基站的 CSI-RS对其 Paging信道的干扰
[134] 在一些可以容忍宏小区基站的 CSI-RS对其 Paging信道的干扰的应用中， 可以适当地放松对宏小区基站传输 CSI-RS的子帧位置的限制。
[135] 结合上述的优选示例 1、 2可以看出， 为了保证宏小区基站的公共信道不 对微微小区基站的公共信道造成干扰， 微微小区基站可以将传输帧向后平移 2 个或 3个子帧。
[136] 针对示例情形 2, 在本发明的一个改型实施例中，微微小区基站的传输帧 可以向后平移 2个子帧， 在这种情况下， 除了上述优选示例中的第 3和 /或 8 个子帧之外， 宏小区基站还可以在第 4和 /或 9个子帧上传输 CSI-RS。
[137] 图 11是示出根据上述改型实施例的宏小区基站的传输帧和微微小区基站 的传输帧的示意图。 如图 11所示， 除了上述优选示例中的第 3和 /或 8个子帧 之外， 宏小区基站还可以在第 4和 /或 9个子帧上传输 CSI-RS。 在第 4和 /或 9 个子帧上传输 CSI-RS时，存在宏小区基站的 CSI-RS对其 Paging信道的干扰。
[138] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 11所 示的实施例中可以实现对干扰进行协调的传输配置方案包括：宏小区基站利用 传输帧（以一个传输帧中包括 10个子帧为例） 中的第 3个子帧和 /或第 8个子 帧（取决于周期而确定是否可以同时使用子帧 3和 8 )来传输 CSI-RS; 或者利 用利用传输帧（以一个传输帧中包括 10个子帧为例） 中的第 4个子帧和 /或第
[139] 参见表 1 , Paging信道基于不同的配置可以占用第 0、 4、 5、 9子帧、 第 9子帧或第 4、 9子帧。
[140] 如图 11所示， 当宏小区基站在第 4个子帧上传输 CSI-RS时， CSI-RS可 能会对宏小区基站的 Paging信道（例如， 当 Paging信道占用第 0、 4、 5、 9 子帧或占用第 4、 9子帧时）造成干扰，但是 CSI-RS不会对宏小区基站的其它 公共信道造成干扰， 也不会对微微小区基站的公共信道造成干扰， 此外， 宏小 区基站的公共信道也不会干扰微微小区基站的公共信道。 [141] 类似地， 如图 11所示， 当宏小区基站在第 9个子帧上传输 CSI-RS时， CSI-RS可能会对宏小区基站的 Paging信道造成干扰， 但是 CSI-RS不会对宏 小区基站的其它公共信道造成干扰，也不会对微微小区基站的公共信道造成干 扰， 此外， 宏小区基站的公共信道也不会干扰微微小区基站的公共信道。
[142] 另一方面， 参见表 1可知， 根据不同的应用情形， CSI-RS的传输周期可 以是 5个子帧、 10个子帧、 20个子帧或 40个子帧。
[143] 例如，在允许存在宏小区基站的 CSI-RS对其 Paging信道的干扰的情况下， 如果 CSI-RS的传输周期是 10个子帧、 20个子帧或 40个子帧， 宏小区基站用 于传输 CSI-RS的子帧可以是帧中的第 4个子帧或第 9个子帧。
[144] 再例如，在允许存在宏小区基站的 CSI-RS对其 Paging信道的干扰的情况 下， 如果 CSI-RS的传输周期是 5个子帧， 宏小区基站用于传输 CSI-RS的子 帧可以是帧中的第 4个子帧和第 9个子帧。
[145] 针对示例情形 2, 在本发明的另一个改型实施例中， 微微小区基站的传输 帧可以向后平移 3个子帧。在这种情况下， 除了上述优选示例中的第 1和 /或 6 个子帧之外， 宏小区基站还可以在第 4和 /或 9个子帧上传输 CSI-RS。
[146] 图 12是示出根据上述改型实施例的宏小区基站的传输帧和微微小区基站 的传输帧的示意图。 如图 12所示， 宏小区基站还可以在第 4和 /或 9个子帧上 传输 CSI-RS。 在第 4和 /或 9个子帧上传输 CSI-RS 时， 存在宏小区基站的 CSI-RS对其 Paging信道的干扰。
[147] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 12所 示实施例中可以实现对干扰进行协调的传输配置方案包括：宏小区基站利用传 输帧（以一个传输帧中包括 10个子帧为例）中的第 1个子帧和 /或第 6个子帧 (取决于周期而确定是否可以同时使用子帧 1和 6 )来传输 CSI-RS;或者利用 利用传输帧 （以一个传输帧中包括 10个子帧为例 ) 中的第 4个子帧和 /或第 9
[148] 参见表 1 , Paging信道基于不同的配置可以占用第 0、 4、 5、 9子帧、 第 9子帧或第 4、 9子帧。
[149] 如图 12所示， 当宏小区基站在第 4个子帧上传输 CSI-RS时， CSI-RS可 能会对宏小区基站的 Paging信道（例如， 当 Paging信道占用第 0、 4、 5、 9 子帧或占用第 4、 9子帧时）造成干扰，但是 CSI-RS不会对宏小区基站的其它 公共信道造成干扰， 也不会对微微小区基站的公共信道造成干扰， 此外， 宏小 区基站的公共信道也不会干扰微微小区基站的公共信道。
[150] 类似地， 如图 12所示， 当宏小区基站在第 9个子帧上传输 CSI-RS时， CSI-RS可能会对宏小区基站的 Paging信道造成干扰， 但是 CSI-RS不会对宏 小区基站的其它公共信道造成干扰，也不会对微微小区基站的公共信道造成干 扰， 此外， 宏小区基站的公共信道也不会干扰微微小区基站的公共信道。
[151] 另一方面， 参见表 1可知， 根据不同的应用情形， CSI-RS的传输周期可 以是 5个子帧、 10个子帧、 20个子帧或 40个子帧。
[152] 例如，在存在宏小区基站的 CSI-RS对其 Paging信道的干扰的情况下，如 果 CSI-RS的传输周期是 10个子帧、 20个子帧或 40个子帧， 宏小区基站用于 传输 CSI-RS的子帧可以是帧中的第 4个子帧或第 9个子帧。
[153] 再例如， 在存在宏小区基站的 CSI-RS对其 Paging信道的干扰的情况下， 如果 CSI-RS的传输周期是 5个子帧， 宏小区基站用于传输 CSI-RS的子帧可 以是帧中的第 4个子帧和第 9个子帧。
[154] 示例情形 3: 可以容忍宏小区基站的 CSI-RS对微微小区基站的处于第 4 子帧的 Paging信道的干扰
[155] 如表 1可见， Paging信道可能占用帧中的第 9个子帧、 第 4、 9个子帧或 者第 0、 4、 5、 9个子帧。 在本发明的示例情形 3中， 例如仅可以容忍宏小区 基站传输的 CSI-RS对处于第 4个子帧上的 Paging信道的干扰， 而需要保证宏 小区基站传输的 CSI-RS不会对处于其它子帧上的 Paging信道造成干扰。在这 种情况下， 可以适当地放松对宏小区基站传输 CSI-RS的子帧位置的限制。
[156] 结合上述的优选示例可以看出， 为了保证宏小区基站的公共信道不对微 微小区基站的公共信道造成感染，微微小区基站可以将传输帧向后平移 2个或 3个子帧。
[157] 针对示例情形 3, 在本发明的一个改型实施例中，微微小区基站的传输帧 可以向后平移了 2个子帧，在这种情况下， 除了上述优选示例中的第 3和 /或 8 个子帧之外， 宏小区基站还可以在第 6个子帧上传输 CSI-RS。
[158] 图 13是示出根据上述改型实施例的宏小区基站的传输帧和微微小区基站 的传输帧的示意图。 如图 13 所示， 宏小区基站还可以在第 6 个子帧上传输 CSI-RS。 当在第 6个子帧上传输 CSI-RS时， 存在宏小区基站的 CSI-RS对微 微小区基站的占用第 4个子帧的 Paging信道的干扰。
[159] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 13所 示实施例中可以实现对干扰进行协调的传输配置方案包括：宏小区基站利用传 输帧（以一个传输帧中包括 10个子帧为例）中的第 3个子帧和 /或第 8个子帧 (取决于周期而确定是否可以同时使用子帧 3和 8 )来传输 CSI-RS;或者利用 利用传输帧中的第 6个子帧。
[160] 如图 13所示， 当宏小区基站在第 6个子帧上传输 CSI-RS时， CSI-RS可 能会对宏小区基站的 Paging信道（例如， 当 Paging信道占用第 4个子帧时 ) 造成干扰， 但是 CSI-RS不会对微微小区基站的公共信道造成干扰， 也不会对 宏小区基站的其它公共信道造成干扰， 此外，宏小区基站的公共信道也不会干 扰微微小区基站的公共信道。
[161] 此外， 针对示例情形 3, 在本发明的另一个改型实施例中， 微微小区基站 的传输帧可以向后平移 3个子帧， 在这种情况下， 除了上述优选示例中的第 1 和 /或 6个子帧之外， 宏小区基站还可以在第 7个子帧上传输 CSI-RS。
[162] 图 14是示出根据上述改型实施例的宏小区基站的传输帧和微微小区基站 的传输帧的示意图。 如图 14所示， 宏小区基站还可以在第 7 个子帧上传输 CSI-RS。 在这种情况下， 存在宏小区基站的 CSI-RS对微微小区基站的占用第 4个子帧的 Paging信道的干 4尤。
[163] 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 14所 示实施例中可以实现对干扰进行协调的传输配置方案包括：宏小区基站利用传 输帧（以一个传输帧中包括 10个子帧为例）中的第 1个子帧和 /或第 6个子帧 (取决于周期而确定是否可以同时使用子帧 1和 6 )来传输 CSI-RS;或者利用 利用传输帧中的第 7个子帧。
[164] 如图 14所示， 当宏小区基站在第 7个子帧上传输 CSI-RS时， CSI-RS可 能会对宏小区基站的 Paging信道（例如， 当 Paging信道占用第 4个子帧时） 造成干扰， 但是 CSI-RS不会对微微小区基站的公共信道造成干扰， 也不会对 宏小区基站的其它公共信道造成干扰， 此外，宏小区基站的公共信道也不会干 扰微微小区基站的公共信道。
[165] 示例情形 4: 可以容忍宏小区基站的公共信道对微微小区基站的 Paging 信道的干扰
[166] 结合上述的优选示例 1、 2可以看出， 当微微小区基站将传输帧向后平移 2个或 3个子帧时， 可以保证宏小区基站的公共信道不对微微小区基站的公共 信道造成干扰。 但是， 在可以容忍宏小区基站的公共信道对微微小区基站的 Paging信道的干扰的示例情形 4 中， 微微小区基站的传输帧可以向后平移 1 个子帧。
[167] 在本发明的一个改型实施例中， 微微小区基站的传输帧可以向后平移 1 个子帧。 在这种情况下， 如图 15所示， 宏小区基站还可以在第 2和 /或 7个子 帧上传输 CSI-RS或者在第 3和 /或 8个子帧上传输 CSI-RS。
[168] 更具体地， 进一步结合表 1所示的 CSI-RS传输的周期性要求可以看出， 在图 15所示实施例中可以实现对干扰进行协调的传输配置方案包括： 宏小区 基站利用传输帧 （以一个传输帧中包括 10个子帧为例） 中的第 2个子帧和 / 或第 7 个子帧 （取决于周期而确定是否可以同时使用子帧 2 和 7 ) 来传输 CSI-RS; 或者利用利用传输帧 （以一个传输帧中包括 10个子帧为例） 中的第 3个子帧和 /或第 8个子帧（取决于周期而确定是否可以同时使用子帧 3和 8 )。
[169] 图 15是示出根据该改型实施例的宏小区基站的传输帧和微微小区基站的 传输帧的示意图。
[170] 如图 15所示， 微微小区基站的传输帧向后平移了 1个子帧， 因而， 宏小 区基站的占用第 0个子帧的公共信道（例如， PBCH信道、 PSS信道、 SSS信 道等 )可以对微微小区基站的占用第 9个子帧的 Paging信道造成干扰； 并且， 宏小区基站的占用第 5个子帧的公共信道（例如， PSS信道、 SSS信道、 SIB1 信道等）可以对微微小区基站的占用第 4个子帧的 Paging信道造成干扰。
[171] 在如图 15所示的微微小区基站的传输帧向后平移了 1个子帧的情况下， 当宏小区基站在第 2、 3、 7或 8个子帧上传输 CSI-RS时， 用于传输 CSI-RS 的子帧没有与微微小区基站的公共信道占用的子帧重叠，即不会对微微小区基 站的公共信道造成干扰。
[172] 另一方面， 参见表 1可知， 根据不同的应用情形， CSI-RS的传输周期可 以是 5个子帧、 10个子帧、 20个子帧或 40个子帧。
[173] 例如，在 CSI-RS的传输周期是 10个子帧、 20个子帧或 40个子帧的情况 下， 宏小区基站用于传输 CSI-RS的子帧可以是帧中的第 2、 3、 7或 8个子帧 上， 以满足 CSI-RS传输的周期要求。
[174] 再例如， 在 CSI-RS的传输周期是 5个子帧的情况下， 宏小区基站用于传 输 CSI-RS的子帧可以是帧中的第 3个子帧和第 8个子帧以满足 CSI-RS传输 周期的要求， 或者可以是帧中的第 2个子帧和第 7个子帧以满足 CSI-RS传输 周期的要求。
[175] 与根据上述实施例的方法对应， 本发明的实施例还提供了相应的装置。
[176] 图 16a示出了根据本发明的一个实施例的对干扰进行协调的装置。
[177] 如图 16a所示，根据该实施例的对干扰进行协调的装置 1600a包括干扰协 调信息生成部 1602a。
[178] 图 16a所示的装置 1600a可以被设置在宏小区基站处， 并可以生成与 CSI-RS有关的干扰协调信息并发送给微微小区基站。
[179] 具体来说， 干扰协调信息生成部 1602a可以收集与 CSI-RS有关的配置信 息， 并通过基站之间的接口 （例如， X2接口）将这些配置信息作为干扰协调 信息发送给相关的微微小区基站。
[180] 图 16b示出了根据本发明的另一个实施例的对干扰进行协调的装置。
[181] 如图 16b所示， 根据该实施例的对干扰进行协调的装置可以包括干扰协 调信息接收部 1602b和干扰协调信息发送部 1604b。
[182] 其中， 干扰协调信息接收部 1602b可以从通信系统中的宏小区基站接收 与所述宏小区基站的 CSI-RS有关的干扰协调信息。
[183] 干扰协调信息发送部 1604b可以通过终端与基站之间的通信信令（例如， 无线资源控制信令， 即 RRC信令）来将从宏小区基站接收到的与 CSI-RS有关 的干扰协调信息发送给该微微小区基站服务的终端。
[184] 这样， 根据本实施例的发送干扰协调信息的装置 1600b可以将与 CSI-RS 有关的干扰协调信息发送至终端， 有助于实现干扰协调。 此外， 图 16b所示的 装置 1600b可以被设置在微微小区基站处。
[185] 在本发明的一个具体实施例中， 由宏小区基站收集并由微微小区发送到 终端的与 CSI-RS有关的干扰协调信息例如可以包括： CSI-RS的周期， CSI-RS 的子帧位置， CSI-RS的时频资源位置， CSI-RS的传输符号以及 CSI-RS的传 输功率。 [186] 通过上述的与 CSI-RS有关的信息， 可以向终端提供与 CSI-RS传输有关 的信息。 因而， 终端也可以基于这种与 CSI-RS有关的干扰协调信息来从接收 信息中消除信息。
[187] 图 17 示出了根据本发明的一个实施例的对干扰进行协调的装置的示意 图。
[188] 如图 17所示， 干扰协调装置 1700包括： 接收部 1702; 消除部 1704。
[189] 接收部 1702可以从微微小区基站接收由宏小区基站收集的与 CSI-RS有 关的干扰协调信息。
[190] 消除部 1704可以基于接收的干扰协调消息从接收信息中消除由 CSI-RS 引起的干 4尤。
[191] 这样， 根据本发明实施例的干扰协调装置 1700可以消除宏小区对微微小 区造成的干扰。 更具体而言， 可以消除宏小区基站传输 CSI-RS对微微小区造 成的干扰。
[192] 在根据本发明的一个实施例， 消除部可以包括干扰位置确定部、 判断部、 以及干扰消除部。
[193] 图 18示出了根据本发明一个实施例的消除部的示意图。 如图 18所示， 消除部 1800包括： 干扰位置确认部 1802、 判断部 1804和干扰消除部 1806。
[194] 干扰位置确定部 1802可以根据来自接收部的干扰协调信息来确定干扰位 置。
[195] 具体来说， 干扰位置确定部 1802可以根据与 CSI-RS有关的干扰协调信 息中的 CSI-RS的周期、 CSI-RS的子帧位置、 CSI-RS的时频资源位置来确定 宏小区基站传输 CSI-RS的子帧位置。 这样， 可以确定出干扰位置。
[196] 判断部 1804可以判断该干扰位置上是否存在资源调度。
[197] 具体来说， 如果判断部 1804发现在干扰位置上没有信息传输， 则可以判 定在该干扰位置不存在资源调度并不做处理。
[198] 另一方面， 如果判断部 1804发现在干扰位置上存在针对信息传输， 则判 断部 1804可以判定在该干扰位置处存在资源调度并通知干扰消除部 1806进行 处理。 [199] 干扰消除部 1806可以根据干扰协调信息从接收信号中消除干扰的影响。
[200] 具体来说， 干扰消除部 1806可以根据干扰协调信息中的 CSI-RS传输符 号、 CSI-RS 的传输功率来进一步确定出干扰大小， 并基于确定出的干扰大小 从在干扰位置处的接收信号中消除干扰的影响。
[201] 这样， 终端可以从接收信息中消除由宏小区基站传输 CSI-RS所造成的影 响， 进而确保信息接收的质量。
[202] 根据上述实施例的干扰协调的装置可以基于来自基站侧的干扰协调信息 从接收信号中消除了干扰的影响。也就是说，根据上述实施例的干扰协调的装 置可以消除宏小区基站传输 CSI-RS对微微小区的干扰。
[203] 但是， 以上提供的装置仅为示例， 本发明不限于此， 在本发明的另一个 实施例中， 还提供了另一种对干扰进行协调的装置。
[204] 图 19示出了根据本发明另一个实施例的对干扰进行协调的装置。
[205] 如图 19所示， 该装置可以包括平移部 1902和选择部 1904。
[206] 平移部 1904可以基于宏小区基站的帧结构来将微微小区基站的传输帧向 后平移， 而选择部 1904可以基于所述微微小区基站向后平移传输帧的长度， 从所述宏小区基站的传输帧中选出用于传输 CSI-RS子帧来传输 CSI-RS。通过 平移部 1902和选择部 1904的处理， 使得： 由选择部 1902选出的用于传输 CSI-RS 的子帧至少部分地不与宏小区基站用于传输公共信道的子帧和微微小 区基站用于传输公共信道的子帧重叠；且宏小区基站用于传输公共信道的子帧 至少部分地不与微微小区基站用于传输公共信道的子帧重叠。
[207] 在本发明的一个实施例中， 平移部可以将微微小区基站的传输帧向后平 移 个子帧，而选择部可以选择宏小区基站的传输帧中的第 3个子帧和 /或第 8 个子帧来传输 CSI-RS。
[208] 图 7是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。 如图 7所示， 选出的宏小区基站的用于传输 CSI-RS的子帧不与 宏小区基站用于传输公共信道的子帧和微微小区基站用于传输公共信道的子 帧重叠；且宏小区基站用于传输公共信道的子帧不与微微小区基站用于传输公 共信道的子帧重叠。
[209] 由此， 可以完全消除宏小区基站的公共信道对微微小区基站的公共信道 的干扰以及宏小区的 CSI-RS对宏小区基站的公共信道和微小区基站的公共信 道的干扰。
[210] 关于图 7所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。可以参见之前针对方法实施例结合图 7进行的描述，在此不再进行重复 以使说明书保持筒洁。
[211] 在本发明的另一个实施例中， 平移部可以将微微小区基站的传输帧向后 平移 3个子帧，选择部可以选择宏小区基站的传输帧中的第 1个子帧和 /或第 6 个子帧或者选择来传输 CSI-RS。
[212] 图 8是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。 如图 8所示， 选出的宏小区基站的用于传输 CSI-RS的子帧不与 宏小区基站用于传输公共信道的子帧和微微小区基站用于传输公共信道的子 帧重叠；且宏小区基站用于传输公共信道的子帧不与微微小区基站用于传输公 共信道的子帧重叠。
[213] 由此， 可以完全消除宏小区基站的公共信道对微微小区基站的公共信道 的干扰以及宏小区的 CSI-RS对宏小区基站的公共信道和微小区基站的公共信 道的干扰。
[214] 关于图 8所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。可以参见之前针对方法实施例结合图 8进行的描述，在此不再进行重复 以使说明书保持筒洁。
[215] 在本发明的一个改型实施例中， 平移部可以将微微小区基站的传输帧向 后平移 2个子帧，而选择部可以从宏小区基站的传输帧中选择第 2个子帧或第 6个子帧来传输 CSI-RS。
[216] 图 9是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。 如图 9所示， 选出的宏小区基站的用于传输 CSI-RS的子帧不与 宏小区基站用于传输公共信道的子帧重叠，且部分地不与微微小区基站用于传 输公共信道的子帧重叠；且宏小区基站用于传输公共信道的子帧不与微微小区 基站用于传输公共信道的子帧重叠。
[217] 关于图 9所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。可以参见之前针对方法实施例结合图 9进行的描述，在此不再进行重复 以使说明书保持筒洁。 [218] 在本发明的另一个改型实施例中， 平移部可以将微微小区基站的传输帧 向后平移 3个子帧，而选择部可以选择宏小区基站的传输帧中的第 3个子帧或 第 7个子帧来传输 CSI-RS。
[219] 图 10是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。如图 10所示，选出的宏小区基站用于传输 CSI-RS的子帧不与宏 小区基站用于传输公共信道的子帧重叠，且部分地不与微微小区基站用于传输 公共信道的子帧重叠；且宏小区基站用于传输公共信道的子帧不与微微小区基 站用于传输公共信道的子帧重叠。
[220] 关于图 10所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。 可以参见之前针对方法实施例结合图 10进行的描述， 在此不再进行重 复以使说明书保持筒洁。
[221] 在本发明的另一个改型实施例中， 平移部可以将微微小区基站的传输帧 向后平移 2个子帧，而选择部可以选择宏小区基站的传输帧中的第 4个子帧和 /或第 9个子帧来传输 CSI-RS。
[222] 图 11是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。如图 11所示，选出的宏小区基站用于传输 CSI-RS的子帧部分地 不与宏小区基站用于传输公共信道的子帧重叠，且不与微微小区基站用于传输 公共信道的子帧重叠；且宏小区基站用于传输公共信道的子帧不与所述微微小 区基站用于传输公共信道的子帧重叠。
[223] 关于图 11所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。 可以参见之前针对方法实施例结合图 11进行的描述， 在此不再进行重 复以使说明书保持筒洁。
[224] 在本发明的另一个改型实施例中， 平移部可以将微微小区基站的传输帧 向后平移 3个子帧，而选择部选择所述宏小区基站的传输帧中的第 4个子帧和 /或第 9个子帧来传输 CSI-RS。
[225] 图 12是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。如图 12所示，选出的所述宏小区基站用于传输 CSI-RS的子帧部 分地不与宏小区基站用于传输公共信道的子帧重叠，且不与微微小区基站用于 传输公共信道的子帧重叠；且宏小区基站用于传输公共信道的子帧不与微微小 区基站用于传输公共信道的子帧重叠。 [226] 关于图 12所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。 可以参见之前针对方法实施例结合图 12进行的描述， 在此不再进行重 复以使说明书保持筒洁。
[227] 在本发明的另一个改型实施例中， 平移部可以将微微小区基站的传输帧 向后平移 2个子帧，而选择部选择宏小区基站的传输帧中的第 6个子帧来传输 CSI-RS。
[228] 图 13是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。如图 13所示，选出的宏小区基站用于传输 CSI-RS的子帧不与宏 小区基站用于传输公共信道的子帧重叠，且部分地不与微微小区基站用于传输 公共信道的子帧重叠；且宏小区基站用于传输公共信道的子帧不与微微小区基 站用于传输公共信道的子帧重叠。
[229] 关于图 13所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。 可以参见之前针对方法实施例结合图 13进行的描述， 在此不再进行重 复以使说明书保持筒洁。
[230] 在本发明的另一个改型实施例中， 平移部可以将微微小区基站的传输帧 向后平移 3个子帧，而选择部可以选择宏小区基站的传输帧中的第 7个子帧来 传输 CSI-RS。
[231] 图 14是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。如图 14所示，宏小区基站选出的用于传输 CSI-RS的子帧不与宏 小区基站用于传输公共信道的子帧重叠，且部分地不与微微小区基站用于传输 公共信道的子帧重叠；且宏小区基站用于传输公共信道的子帧不与微微小区基 站用于传输公共信道的子帧重叠。
[232] 关于图 14所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。 可以参见之前针对方法实施例结合图 14进行的描述， 在此不再进行重 复以使说明书保持筒洁。
[233] 在本发明的另一个改型实施例中， 平移部可以将微微小区基站的传输帧 向后平移 1个子帧， 选择部可以选择宏小区基站的传输帧中的第 3个子帧和 / 或第 8个子帧或者选择帧中的 2个子帧和 /或第 7个子帧来传输 CSI-RS。
[234] 图 15是示出根据该实施例的宏小区基站的传输帧和微微小区基站的传输 帧的示意图。如图 15所示，宏小区基站选出的用于传输 CSI-RS的子帧不与宏 小区基站用于传输公共信道的子帧重叠，且不与微微小区基站用于传输公共信 道的子帧重叠；宏小区基站用于传输公共信道的子帧部分地不与微微小区基站 用于传输公共信道的子帧重叠。
[235] 关于图 15所示的宏小区基站的传输帧和微微小区基站的传输帧具体配置 情况。 可以参见之前针对方法实施例结合图 15进行的描述， 在此不再进行重 复以使说明书保持筒洁。 施例还相应地提供了一种终端、 基站和通信系统。
[237] 本发明的一个实施例提供了一种基站， 所述基站可以包括根据结合图 16 描述的实施例的对干扰进行协调的装置。
[238] 本发明的一个实施例还提供了一种终端， 所述终端可以包括根据结合图 17、 18描述的实施例的对干扰进行协调的装置。
[239] 本发明的一个实施例还提供了一种通信系统， 其包括至少一个上述的基 站和至少一个上述的终端。 [240] 此外， 本发明的一个实施例还提供了一种基站， 所述基站可以包括结合 图 19描述的实施例的对干扰进行协调的装置。
[241] 进一步， 本发明的一个实施例还提供了一种通信系统， 其包括至少一个 上述的基站。
[242] 所属技术领域的技术人员知道， 本发明可以体现为系统、 方法或计算机 程序产品。 因此， 本发明可以具体实现为以下形式， 即， 可以是完全的硬件、 完全的软件（包括固件、驻留软件、微代码等）、或者本文一般称为"电路"、 "模 块"或"系统"的软件部分与硬件部分的组合。 此外， 本发明还可以采取体现在 任何有形的表达介质 ( medium of expression )中的计算机程序产品的形式， 该 介质中包含计算机可用的程序码。
[243] 可以使用一个或多个计算机可读介质的任何组合。 计算机可读介质可以 是计算机可读信号介质或计算机可读存储介质 ,计算机可读存储介质例如可以 是—但不限于—电的、 磁的、 光的、 电磁的、 红外线的、 或半导体的系统、 装 置、 器件或传播介质、 或前述各项的任何适当的组合。 计算机可读存储介质的 更具体的例子（非穷举的列表）包括以下： 有一个或多个导线的电连接、 便携 式计算机磁盘、 硬盘、 随机存取存储器（ RAM )、 只读存储器 (ROM)、 可擦式 可编程只读存储器 (EPROM 或闪存）、 光纤、 便携式紧凑磁盘只读存储器 (CD-ROM), 光存储器件、 磁存储器件、 或前述各项的任何适当的组合。 在本 文语境中，计算机可读存储介质可以是任何含有或存储供指令执行系统、装置 或器件使用的或与指令执行系统、 装置或器件相联系的程序的有形介质。
[244] 计算机可读信号介质可以包括例如在基带中或作为载波的一部分传播的 带有计算机可读程序代码的数据信号。这样一种传播信号可以采取任何适当的 形式， 包括 但不限于 电磁的、 光的或其任何适当的组合。 计算机可读信号 介质可以是不同于计算机可读存储介质的、可以传达、传播或传输供指令执行 系统、装置或器件使用的或与指令执行系统、装置或器件相联系的程序的任何 一种计算机可读介质。包含在计算机可读介质中的程序代码可以采用任何适当 的介质传输， 包括 -但不限于-无线、 有线、 光缆、 射频等等、 或上述各项的 任何适当的组合。
[245] 用于执行本发明的操作的计算机程序码， 可以以一种或多种程序设计语 言的任何组合来编写，所述程序设计语言包括面向对象的程序设计语言一诸如 Java, Smalltalk, C++之类， 还包括常规的过程式程序设计语言一诸如 "C"程序 设计语言或类似的程序设计语言。程序码可以完全地在用户的计算上执行、部 分地在用户的计算机上执行、作为一个独立的软件包执行、部分在用户的计算 机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在后 一种情形中， 远程计算机可以通过任何种类的网络 包括局域网（LAN)或广域 网 (WAN) 连接到用户的计算机， 或者， 可以 （例如利用因特网服务提供商来 通过因特网 )连接到外部计算机。
[246] 图 20是示出其中实现本发明的设备和方法的计算机的示例性结构的框 图。
[247] 在图 20中， 中央处理单元 (CPU)2001根据只读映射数据 (ROM)2002中存 储的程序或从存储部分 2008加载到随机存取映射数据 (RAM)2003的程序执行 各种处理。 在 RAM 2003中， 也根据需要存储当 CPU 2001执行各种处理等等 时所需的数据。
[248] CPU 2001、 ROM 2002和 RAM 2003经由总线 2004彼此连接。输入 /输出 接口 2005也连接到总线 2004。 [249] 下述部件连接到输入 /输出接口 2005: 输入部分 2006, 包括键盘、 鼠标等 等； 输出部分 2007, 包括显示器， 比如阴极射线管 (CRT)、 液晶显示器 (LCD) 等等， 和扬声器等等； 存储部分 2008, 包括硬盘等等； 和通信部分 2009, 包 括网络接口卡比如 LAN卡、调制解调器等等。通信部分 2009经由网络比如因 特网执行通信处理。
[250] 根据需要， 驱动器 2010也连接到输入 /输出接口 2005。 可拆卸介质 2011 比如磁盘、光盘、磁光盘、半导体映射数据等等根据需要被安装在驱动器 2010 上， 使得从中读出的计算机程序根据需要被安装到存储部分 2008中。
[251] 在通过软件实现上述步骤和处理的情况下， 从网络比如因特网或存储介 质比如可拆卸介质 2011安装构成软件的程序。
[252] 本领域的技术人员应当理解， 这种存储介质不局限于图 20所示的其中存 储有程序、 与方法相分离地分发以向用户提供程序的可拆卸介质 2011。 可拆 卸介质 2011的例子包含磁盘、 光盘（包含光盘只读映射数据 (CD-ROM)和数字 通用盘 (DVD))、 磁光盘（包含迷你盘 (MD)和半导体映射数据。 或者， 存储介 质可以是 ROM 2002、 存储部分 2008中包含的硬盘等等， 其中存有程序， 并 且与包含它们的方法一起被分发给用户。
[253] 以下的权利要求中的对应结构、 材料、 操作以及所有功能性限定的装置 (means)或步骤的等同替换， 旨在包括任何用于与在权利要求中具体指出的其 它单元相组合地执行该功能的结构、材料或操作。所给出的对本发明的描述其 目的在于示意和描述， 并非是穷尽性的，也并非是要把本发明限定到所表述的 形式。对于所属技术领域的普通技术人员来说，在不偏离本发明范围和精神的 情况下， 显然可以作出许多修改和变型。 对实施例的选择和说明， 是为了最好 地解释本发明的原理和实际应用， 使所属技术领域的普通技术人员能够明了， 本发明可以有适合所要的特定用途的具有各种改变的各种实施方式。

Claims

权 利 要 求
1. 一种在通信系统中对干扰进行协调的方法， 包括：
通信系统中的宏小区基站收集与所述宏小区基站的信道状态信息参考符 号有关的干扰协调信息并发送给微微小区基站；
所述微微小区基站将所述干扰协调信息发送给所述微微小区基站所服务 的终端，以便根据所述干扰协调信息来对宏小区对于微微小区造成的干扰进行 协调。
2. 根据权利要求 1 所述的方法， 其中所述干扰协调信息包括： 信道状态 信息参考符号的周期，信道状态信息参考符号的子帧位置，信道状态信息参考 符号的时频资源位置，信道状态信息参考符号的传输符号，信道状态信息参考 符号的传输功率。
3. 一种在通信系统中对干扰进行协调的方法， 包括：
通信系统中的终端从为其提供服务的微微小区基站接收与宏小区基站的 信道状态信息参考符号有关的干扰协调信息；
所述终端根据所述干扰协调信息从接收信息中消除干扰信息，以便消除宏 小区对于微微小区造成的干扰。
4. 根据权利要求 3所述的方法， 其中所述干扰协调信息包括： 信道状态 信息参考符号的周期，信道状态信息参考符号的子帧位置，信道状态信息参考 符号的时频资源位置，信道状态信息参考符号的传输符号，信道状态信息参考 符号的传输功率。
5. 根据权利要求 4所述的方法， 其中从接收信息中消除干扰信息的处理 包括：
根据干扰协调信息来确定干扰位置；
判断该干扰位置上是否存在资源调度； 如果不存在， 则结束处理；
如果存在， 则根据干扰协调信息从接收信号中消除干扰的影响。
6. 一种在通信系统中对干扰进行协调的方法， 包括：
通信系统中的宏小区基站基于自身的帧结构通知通信系统中的微微小区 基站将所述微微小区基站的传输帧向后平移；基于所述微微小区基站向后平移 传输帧的长度，所述宏小区基站在自身的传输帧中选出用于传输信道状态信息 参考符号的子帧来传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧至少 部分地不与所述宏小区基站用于传输公共信道的子帧和所述微微小区基站用 于传输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧至少 部分地不与所述微微小区基站用于传输公共信道的子帧重叠。
7. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将传输帧向后平移 2个子帧，所述宏小区基站选择帧中 的第 3个子帧和 /或第 8个子帧来传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧不与 所述宏小区基站用于传输公共信道的子帧和微微小区基站用于传输公共信道 的子帧重叠；且所述宏小区基站用于传输公共信道的子帧不与所述微微小区基 站用于传输公共信道的子帧重叠。
8. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 3个子帧，所述宏小区基站选择帧中的第 1个子帧和 /或第 6个子帧或者选择来传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧不与 所述宏小区基站用于传输公共信道的子帧和微微小区基站用于传输公共信道 的子帧重叠；且所述宏小区基站用于传输公共信道的子帧不与所述微微小区基 站用于传输公共信道的子帧重叠。
9. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 2个子帧，所述宏小区基站选择帧中的第 2个子帧或第 6个子帧来传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧不与 所述宏小区基站用于传输公共信道的子帧重叠，且部分地不与所述微微小区基 站用于传输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧 不与所述微微小区基站用于传输公共信道的子帧重叠。
10. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 3个子帧，所述宏小区基站选择帧中的第
3个子帧或第 7个子帧来传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧不与 所述宏小区基站用于传输公共信道的子帧重叠，且部分地不与所述微微小区基 站用于传输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧 不与所述微微小区基站用于传输公共信道的子帧重叠。
11. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 2个子帧，所述宏小区基站选择帧中的第 4个子帧和 /或第 9个子帧中传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧部分 地不与所述宏小区基站用于传输公共信道的子帧重叠，且不与所述微微小区基 站用于传输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧 不与所述微微小区基站用于传输公共信道的子帧重叠。
12. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 3个子帧，所述宏小区基站选择帧中的第 4个子帧和 /或第 9个子帧中传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧部分 地不与所述宏小区基站用于传输公共信道的子帧重叠，且不与所述微微小区基 站用于传输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧 不与所述微微小区基站用于传输公共信道的子帧重叠。
13.根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 2个子帧，所述宏小区基站选择帧中的第
6个子帧来传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧不与 所述宏小区基站用于传输公共信道的子帧重叠，且部分地不与所述微微小区基 站用于传输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧 不与所述微微小区基站用于传输公共信道的子帧重叠。
14. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 3个子帧，所述宏小区基站选择帧中的第 7个子帧来传输信道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧不与 所述宏小区基站用于传输公共信道的子帧重叠，且部分地不与所述微微小区基 站用于传输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧 不与所述微微小区基站用于传输公共信道的子帧重叠。
15. 根据权利要求 6所述的方法， 其中，
所述微微小区基站将帧向后平移 1个子帧，所述宏小区基站选择帧中的第 3个子帧和 /或第 8个子帧或者选择帧中的 2个子帧和 /或第 7个子帧来传输信 道状态信息参考符号；
其中，所述宏小区基站选出的用于传输信道状态信息参考符号的子帧不与 所述宏小区基站用于传输公共信道的子帧重叠，且不与所述微微小区基站用于 传输公共信道的子帧重叠；所述宏小区基站用于传输公共信道的子帧部分地不 与所述微微小区基站用于传输公共信道的子帧重叠。
16. 一种在通信系统中对干扰进行协调的装置， 包括： 干扰协调信息生成部，被配置成生成与所述装置的信道状态信息参考符号 有关的干扰协调信息并发送给通信系统中的微微小区基站；
其中， 所述干扰协调信息被发送给所述微微小区基站所服务的终端， 以便 根据所述干扰协调信息来对宏小区对于微微小区造成的干扰进行协调。
17.一种在通信系统中对干扰进行协调的装置， 包括：
干扰协调信息接收部，被配置成从通信系统中的宏小区基站接收与所述宏 小区基站的信道状态信息参考符号有关的干扰协调信息；
干扰协调信息发送部，被配置成将所述干扰协调信息发送给所述装置所服 务的终端，以便根据所述干扰协调信息来对宏小区对于与所述装置对应的微微 小区造成的干扰进行协调。
18. 一种在通信系统中对干扰进行协调装置， 包括：
接收部，被配置成从通信系统中的微微小区基站接收与通信系统中的宏小 区基站的信道状态信息参考符号有关的干扰协调信息；
消除部，被配置成根据所述干扰协调信息从接收信息中消除干扰信息， 以 便消除宏小区对于微微小区造成的干扰。
19.一种在通信系统中对干扰进行协调的装置， 包括：
平移部，被配置成基于通信系统中的宏小区基站的帧结构来将通信系统中 的微微小区基站的传输帧向后平移；
选择部，被配置成基于所述微微小区基站向后平移传输帧的长度，从所述 宏小区基站的传输帧中选出用于传输信道状态信息参考符号子帧来传输信道 状态信息参考符号；
其中，所述选择部选出的用于传输信道状态信息参考符号的子帧至少部分 地不与所述宏小区基站用于传输公共信道的子帧和所述微微小区基站用于传 输公共信道的子帧重叠；且所述宏小区基站用于传输公共信道的子帧至少部分 地不与所述微微小区基站用于传输公共信道的子帧重叠。
20. 一种终端， 包括根据权利要求 18所述的对干扰进行协调的装置。
21. 一种基站，包括根据权利要求 16或 17所述的对干扰进行协调的装置
22. 一种基站， 包括根据权利要求 19所述的对干扰进行协调装置。
23. 一种通信系统， 包括至少一个根据权利要求 20所述的终端和至少 个根据权利要求 21所述的基站。
24. 一种通信系统， 包括至少一个根据权利要求 22所述的基站。
PCT/CN2011/070089 2011-01-07 2011-01-07 对干扰进行协调的方法和装置及通信系统、移动台和基站 Ceased WO2012092719A1 (zh)

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CN104956743A (zh) * 2013-01-31 2015-09-30 Lg电子株式会社 在无线通信系统中执行同步的方法和设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9491652B2 (en) * 2011-07-28 2016-11-08 Lg Electronics Inc. Method and apparatus for reporting a measurement in a wireless communication system
JPWO2014069058A1 (ja) 2012-10-30 2016-09-08 ソニー株式会社 通信制御装置、プログラム、通信制御方法及び端末装置
EP3136785B1 (en) * 2014-05-30 2019-01-09 Huawei Technologies Co., Ltd. Data transmission method and base station
ES2934480T3 (es) * 2017-05-19 2023-02-22 Samsung Electronics Co Ltd Procedimiento y aparato para la reducción de la sobrecarga de transmisión CSI-RS en un sistema de comunicación inalámbrica

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009129261A1 (en) * 2008-04-14 2009-10-22 Qualcomm Incorporated Allocation of control resources of a femto cell to avoid interference with a macro cell
WO2009154647A1 (en) * 2008-06-19 2009-12-23 Qualcomm Incorporated Self-configuration for femtocells
CN101877608A (zh) * 2010-06-30 2010-11-03 中兴通讯股份有限公司 一种针对协作波束赋型的优化加权csi反馈方法和装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101547545B1 (ko) * 2009-04-20 2015-09-04 삼성전자주식회사 무선 통신 시스템의 기지국간 간섭 제거를 위한 방법 및 이를 위한 장치
US8942192B2 (en) * 2009-09-15 2015-01-27 Qualcomm Incorporated Methods and apparatus for subframe interlacing in heterogeneous networks
EP2548313B1 (en) * 2010-03-17 2019-05-08 LG Electronics Inc. Method and apparatus for providing channel state information-reference signal (csi-rs) configuration information in a wireless communication system supporting multiple antennas
US9065583B2 (en) * 2010-04-13 2015-06-23 Qualcomm Incorporated Method and apparatus for inferring user equipment interference suppression capability from measurements report

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009129261A1 (en) * 2008-04-14 2009-10-22 Qualcomm Incorporated Allocation of control resources of a femto cell to avoid interference with a macro cell
WO2009154647A1 (en) * 2008-06-19 2009-12-23 Qualcomm Incorporated Self-configuration for femtocells
CN101877608A (zh) * 2010-06-30 2010-11-03 中兴通讯股份有限公司 一种针对协作波束赋型的优化加权csi反馈方法和装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104956743A (zh) * 2013-01-31 2015-09-30 Lg电子株式会社 在无线通信系统中执行同步的方法和设备
CN104956743B (zh) * 2013-01-31 2018-10-26 Lg 电子株式会社 在无线通信系统中执行同步的方法和设备

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