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WO2011012067A1 - Procédé de traitement de brouillage de station de base domestique - Google Patents

Procédé de traitement de brouillage de station de base domestique Download PDF

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Publication number
WO2011012067A1
WO2011012067A1 PCT/CN2010/075489 CN2010075489W WO2011012067A1 WO 2011012067 A1 WO2011012067 A1 WO 2011012067A1 CN 2010075489 W CN2010075489 W CN 2010075489W WO 2011012067 A1 WO2011012067 A1 WO 2011012067A1
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WO
WIPO (PCT)
Prior art keywords
base station
home base
subband
sub
band
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/CN2010/075489
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English (en)
Chinese (zh)
Inventor
李吉平
夏林峰
李铮铮
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.)
Huawei Technologies Co Ltd
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Huawei Technologies Co 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
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2011012067A1 publication Critical patent/WO2011012067A1/fr
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
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • 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
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for processing interference and a home base station.
  • a partial frequency reuse (FFR) and a soft frequency reuse (SFFR) technology are usually adopted.
  • the part frequency reuse method includes dividing the frequency that can be used by the system into multiple sub-bands, and performing network coverage planning according to the designed rules to perform network deployment and configuring corresponding working sub-bands. Assume that the frequency that the system can use is divided into four sub-bands, each of which uses one of the sub-bands, and that each cell and surrounding cells use different sub-bands, thus avoiding interference between adjacent cells. .
  • the SFFR technology is also introduced in the prior art, that is, the cell is divided into a cell center and a cell edge, and each cell center can use the frequency resource of the entire system, but there is a certain power limitation, and the cell center needs to Lower power transmission data; different cell edges use different sub-bands to avoid interference between different cells.
  • the embodiments of the present invention provide a method for processing interference and a home base station, which can solve the interference problem between the home base stations.
  • An embodiment of the present invention provides a method for processing a interference, including:
  • the home base station that needs to perform the interference processing acquires the subband usage information sent by the home base station adjacent to the home base station, where the subband usage information is used to indicate the working subband used by the home base station;
  • the home base station selects a subband with the least interference and/or is not disturbed as the working subband of the home base station according to the acquired subband usage information.
  • the embodiment of the invention further provides a method for processing a disturbance, comprising:
  • the home base station transmits the subband usage information to the home base station adjacent to the home base station through a specific physical channel, to notify the neighboring home base station of the selected working subband, wherein the specific physical channel is used for Subband usage information carried between the home base stations.
  • the embodiment of the invention further provides a home base station, including:
  • An obtaining module configured to acquire subband usage information sent by an adjacent home base station, where the subband usage information is used to indicate a working subband used by the home base station;
  • a selection module configured to select, according to the subband usage information acquired by the obtaining module, a subband with minimal interference and/or no interference as a working subband.
  • the embodiment of the invention further provides a home base station, including:
  • a second sending module configured to send the sub-band usage information to the neighboring home base station by using a specific physical channel, and notify the neighboring home base station of the selected working sub-band, where the specific physical channel is used to be carried in the home base station Subband usage information between transmissions.
  • the home base station acquires the subband usage information sent by the neighboring home base station, so that each of the home base stations can learn the subband usage information of other home base stations adjacent to the home base station, and then each of the home base stations according to the neighboring home base
  • the sub-band usage information of the base station selects the sub-band that is least interfered with and/or undisturbed as its own working sub-band.
  • the interference processing method enables dynamic coordination of frequency resources of the entire system between cells, and solves the problem of interference between the home base stations.
  • Embodiment 1 is a flow chart of Embodiment 1 of a method for processing a disturbance according to the present invention
  • Embodiment 2 is a flowchart of Embodiment 2 of the method for processing interference according to the present invention
  • FIG. 3 is a schematic diagram of a relationship between a home base station according to various embodiments of the present invention
  • FIG. 4 is a flowchart of Embodiment 3 of the method for processing interference according to the present invention
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a home base station according to the present invention.
  • Embodiment 2 of a home base station is a schematic structural diagram of Embodiment 2 of a home base station according to the present invention.
  • FIG. 7 is a schematic structural diagram of Embodiment 3 of a home base station according to the present invention. detailed description
  • FIG. 1 is a flowchart of Embodiment 1 of a method for processing a disturbance according to the present invention, including:
  • Step 101 The home base station that needs to perform the interference processing acquires the subband usage information sent by the home base station adjacent to the home base station, where the subband usage information is used to indicate the working subband used by the home base station;
  • Step 102 The home base station selects, as the working sub-band of the home base station, the sub-band that is least interfered with and/or is not interfered according to the acquired sub-band usage information.
  • the home base station acquires the subband usage information sent by the neighboring home base station, so that the home base station can learn the subband usage information of other home base stations adjacent to the home base station, and then each home base station according to the neighboring home base
  • the sub-band usage information of the base station selects the sub-band with the least interference and/or undisturbed interference as its own operating frequency.
  • the method of the interference processing does not require the operator to plan and deploy the working sub-bands of the home base station in advance, and the home base stations in each cell can flexibly select the working sub-bands to solve the interference problem between the home base stations.
  • the embodiment shown in FIG. 1 of the present invention may further include: the home base station transmitting the subband usage information to the neighboring home base station through a specific physical channel, and notifying the neighboring home base station of the selected working subband.
  • each home base station can send its own sub-band usage information to the adjacent home base station in addition to the sub-band usage information of the neighboring home base station.
  • a specific physical channel is used to carry subband usage information transmitted between home base stations.
  • the specific physical channel may be, for example, a newly defined physical channel dedicated to transmitting subband usage information between the home base stations, or a physical channel transmitting other information between the home base stations, that is, the specific physical channel is Used to transmit other information is also used to transfer sub-band usage information.
  • time-frequency resources are reserved for the specific physical channel. The size of the time-frequency resource is equal to the number of sub-bands divided by the system bandwidth multiplied by the number of sub-carriers used for mapping each sub-band, and the sub-carriers mapped by each sub-band are called
  • a resource element (Resource Element) establishes a mapping relationship between a subband and a resource unit of a specific physical channel.
  • the number of subbands of the system bandwidth division, the time-frequency resources of the specific physical channel used for communication between the home base stations, and the mapping manner and mapping relationship between the resource elements of the sub-band and the specific physical channel may be notified to each by the core network.
  • the home base station may also be configured in each of the home base stations in advance, so that the home base station can acquire the mapping relationship between the sub-band and the resource unit of the specific physical channel in advance.
  • the setting of the mapping relationship between the subband and the resource unit of the specific physical channel can be, for example, as follows:
  • the time domain is assigned 4 symbols, or it can be other allocation methods.
  • Each of the three subcarriers can be divided into one group, so that eight sets of subcarriers are obtained, and each set of subcarriers corresponds to one subband.
  • FIG. 2 is a flowchart of Embodiment 2 of the method for processing interference according to the present invention, including:
  • Step 201 When the home base station starts or discovers that the interference is relatively serious, the signal power of the at least one resource unit of the specific physical channel is obtained, for example, by monitoring the physical channel. Obtaining subband usage information of the neighboring home base station according to a mapping relationship between the pre-acquired subband and the resource unit of the specific physical channel, where the subband usage information is included on a specific physical channel The signal power sent by the resource unit.
  • the home base station may obtain a mapping relationship between the sub-band and the resource unit of the specific physical channel in advance.
  • the home base station acquires the signal power of the certain resource unit, it may be determined that the sub-band corresponding to the resource unit has been Occupied, equivalent to the sub-band usage information of the neighboring home base station obtained by the home base station.
  • FIG. 3 is a schematic diagram showing the relationship between a home base station according to various embodiments of the present invention.
  • the home base station A has six adjacent home base stations, which are B, C, D, E, F, and G, respectively. Wherein, B and E are not adjacent, and B and E can use the same working subband a.
  • the resource corresponding to the working subband a The power of the signal on the unit is the superposition of the power of the signals transmitted by B and E on the resource unit. If a working subband is used by multiple home base stations, the power of the signal on the corresponding resource unit of the working subband is large. If a working subband is not used by the home base station, the power of the signal on the corresponding resource unit of the working subband is the same as the low noise level. If a working subband is used by a small number of home base stations, the power of the signal on the corresponding resource unit of the working subband is small.
  • Step 202 The home base station uses a subband corresponding to a resource unit having the same signal power and the same number of noise levels as a preferred subband, and the home base station selects one subband from the preferred subband as a working subband.
  • one subband may be randomly selected as a work.
  • a subband may also be selected as a specific subband according to a specific algorithm or rule; if there is no signal unit and the same noise unit of the noise floor level, the subband corresponding to the resource unit of the physical channel with the smallest signal power is selected as the subband.
  • Working sub-band of the home base station is a specific algorithm or rule
  • the subband corresponding to the resource unit may be considered to be not used by any home base station.
  • the power of the signal on the resource unit is small, indicating that the sub-band corresponding to the resource unit is occupied by a smaller number of home base stations, and the interference received on the sub-band It will also be smaller.
  • Step 203 The home base station sends a signal to the adjacent home base station with a fixed power on the resource unit of the physical channel corresponding to the working sub-band of the working area, and the home base station notifies the neighboring home base station of the selected working sub-band.
  • step 201 if the home base station acquires the signal power of a resource unit on a specific physical channel, and the signal power is the same as the ground noise level, the sub-band corresponding to the resource unit can be directly used as a working sub-band without acquiring the remaining resources.
  • the signal on the unit is visible.
  • the home base station needs to acquire the signal power of at least one resource unit.
  • the home base station may also select multiple sub-bands as its own working sub-bands, and the home base station needs to transmit signals to the adjacent home base stations with fixed power on the resource units corresponding to the respective sub-bands through specific physical channels. Since the sub-band has a mapping relationship with the resource unit of the specific physical channel, when the home base station sends a signal to the neighboring base station through the resource unit of the specific physical channel, the neighboring base station can learn that the sub-band corresponding to the resource unit of the physical channel is The home base station is used.
  • step 202 if the home base station needs to select multiple working sub-bands, but the number of preferred sub-bands is not enough, then it is necessary to simultaneously select the preferred sub-band and the sub-band with the least interference as the working sub-band.
  • the home base station may diverge the time domain and the frequency domain of the resource unit of the physical channel, that is, the time domain and the frequency domain of the resource unit are discontinuous, to obtain time diversity gain and frequency diversity gain,
  • the neighboring home base station can improve the accuracy of signal detection.
  • the home base station may also transmit the subband usage information to the neighboring home base station on the pre-specific physical channel by means of code division.
  • Each home base station can transmit its own subband usage information to an adjacent home base station by using a different orthogonal code.
  • the subband usage information may be bit data indicating a working subband used by the home base station.
  • the subband usage information may take the form of a bit map, that is, a specific sub-bit is represented by a specific bit. For example, the system is divided into 8 sub-bands, and the sub-band usage information of a certain home base station is 00110000, indicating that the home base station uses sub-band 3 and sub-band 4 as working sub-bands.
  • the subband usage information 00110000 can be sent to the adjacent by using an orthogonal code.
  • the subband usage information may also be in other forms, such as a letter or a string.
  • the orthogonal codes used by the home base stations cannot conflict. That is, one home base station and the neighboring base stations of the home base station cannot use the same orthogonal code, but the orthogonal codes can be multiplexed, and the two home base stations that are far away can Use the same orthogonal code.
  • FIG. 4 is a flowchart of Embodiment 3 of a method for processing a disturbance according to the present invention, including:
  • Step 301 When the home base station starts or discovers that the interference is relatively severe, the home base station traverses all orthogonal codes, that is, the home base station separately uses each set orthogonal code and the signal on the specific physical channel to obtain the subband. Use information.
  • Each of the set orthogonal codes can be pre-configured in the home base station, and the home base station can use each orthogonal code and the signal on the specific physical channel respectively, and if the signal on the specific physical channel generates a phase, the positive The cross code has been used by the neighboring home base station, and the home base station can acquire the subband use information.
  • the home base station can know that the subband 3 and the subband 4 have been used. If the home base station uses a certain orthogonal code and a signal on a specific physical channel to generate a thousand peaks, the orthogonal code is not used by the adjacent home base station, and the orthogonal frequency is not used on the specific physical channel.
  • the subband usage information sent by the code is not used by the adjacent home base station, and the orthogonal frequency is not used on the specific physical channel.
  • Step 302 The home base station selects a subband that is not used by the neighboring home base station as a working subband; or if there is no subband that is not used by the neighboring home base station, the home base station performs a signal that generates a peak with the smallest peak of the peak. Decoding, and the subbands used in the decoded subband usage information are used as working subbands. By decoding the signal on the physical channel with the smallest peak of the phase, the decoded subband uses the subbands used in the information to minimize the interference.
  • Step 303 The home base station uses the specific physical channel to generate the orthogonal code of the peak of the phase peak with or without the peak of the phase as the own scrambling code, and uses the scrambling code to send the subband use information to the adjacent home base station. .
  • the sub-band usage information is sent to the adjacent home base station by the orthogonal code, so that the neighboring home base station can select the interference-free and/or less interference according to the sub-band usage information.
  • the sub-band acts as a working sub-band, and the operator does not need to plan the working sub-band of the home base station in advance. And deployment, the home base station in each cell can flexibly select the working sub-band, and solve the interference problem between the home base stations.
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a home base station according to the present invention, including: an acquisition module 11 and a selection module 12 connected to each other, where the acquisition module 11 is configured to acquire sub-band usage information sent by an adjacent home base station, The usage information is used to indicate the information of the working sub-band used by the home base station; the selection module 12 is configured to select the sub-band with the least interference and/or undisturbed as the working sub-subject according to the sub-band usage information acquired by the obtaining module 11 band.
  • the acquiring module in the home base station acquires the subband usage information of the neighboring home base station, so that the selecting module can select the interference free and/or the least interference according to the subband usage information.
  • the sub-band acts as its own working sub-band. The operator does not need to plan and deploy the working sub-band of the home base station in advance.
  • the home base station in each cell can flexibly select the working sub-band to solve the interference problem between the home base stations.
  • the embodiment shown in FIG. 5 may further include a first sending module 13 connected to the selecting module 12 for transmitting subband usage information to an adjacent home base station through a specific physical channel to select The working sub-band selected by module 12 is notified to the adjacent home base station.
  • a first sending module 13 connected to the selecting module 12 for transmitting subband usage information to an adjacent home base station through a specific physical channel to select The working sub-band selected by module 12 is notified to the adjacent home base station.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of a home base station according to the present invention.
  • the obtaining module 11 includes a first obtaining unit 11a
  • the selecting module 12 includes a first selecting unit 12a, a first acquiring unit 11a and a first selecting unit 12a. connection.
  • the first acquiring unit 11a is configured to acquire signal power on at least one resource unit of a specific physical channel, and a mapping relationship between a resource unit and a sub-band of a specific physical channel, and acquire sub-band usage information of the adjacent home base station.
  • the first selecting unit 12a is configured to use the signal power on the at least one resource unit of the specific physical channel acquired by the first acquiring unit 11a, and when there is a resource unit with the same signal power and low noise level, the signal power and the bottom are
  • the subband corresponding to the resource unit with the same noise level is used as the preferred subband, and one subband is selected as the working subband from the preferred subband. When there is no resource unit with the same signal power and the same level of noise, the resource with the smallest signal power is selected.
  • the sub-band corresponding to the unit acts as a working sub-band.
  • the subband corresponding to the resource unit may be considered not to be any Used by the home base station.
  • the power of the signal on the resource unit is small, indicating that the sub-band corresponding to the resource unit is occupied by a smaller number of home base stations, and the interference received on the sub-band is also smaller.
  • the home base station may acquire a mapping relationship between the sub-band and the resource unit of the specific physical channel in advance.
  • the first acquiring unit 11a acquires the signal power of the certain resource unit
  • the sub-corresponding to the resource unit may be determined.
  • the band is already occupied, which is equivalent to the first acquisition unit 11a acquiring the subband usage information of the neighboring home base station.
  • the first selection unit 12a selects one sub-band from the preferred sub-band as the working sub-band, it may be randomly selected, or one sub-band may be selected as the working sub-band according to a specific algorithm or rule.
  • the first sending module 13 may include a first sending unit 13a, configured to send a signal to the resource unit corresponding to the working sub-band selected by the first selecting unit 12a by using a specific physical channel. Adjacent to the home base station.
  • FIG. 7 is a schematic structural diagram of Embodiment 3 of a home base station according to the present invention.
  • the obtaining module 11 includes a second acquiring unit 1 ib
  • the selecting module 12 includes a second selecting unit 12b, a second acquiring unit 1 ib and a second selection.
  • Unit 12b is connected.
  • the second obtaining unit l ib is configured to obtain the bit data for indicating the working sub-band used by the home base station by using the set orthogonal code and the signal on the specific physical channel.
  • each of the set orthogonal codes may be pre-configured in the home base station, and the second acquiring unit 1 ib may use each orthogonal code and the signal on the specific physical channel respectively, if the signals on the specific physical channel generate phases. Thousand peaks indicate that the orthogonal code has been used by the neighboring home base station, and the second obtaining unit 1 ib can acquire bit data for indicating the working subband used by the home base station.
  • the second selecting unit 12b is configured to select, according to the bit data of the working subband used by the second acquiring unit 1ib to indicate the working subband used by the home base station, a subband that is not used by the neighboring home base station as a working subband; When there is a sub-band that is not used by the adjacent home base station, the sub-band used in the sub-band use information decoded by the signal which produces the smallest peak of the phase peak is selected as the working sub-band.
  • the first sending module 13 may include a second sending unit 13b, configured to use, by using a specific physical channel, an orthogonal code that generates a peak of the peak of the phase or has no peak of the phase as its own scrambling code, and uses the scrambling code to
  • the subband use information is sent to the adjacent home base station, and the second selection unit 12b is selected.
  • the selected working sub-band is notified to the adjacent home base station.
  • the acquisition module acquires the subband usage information of the neighboring home base station, so that the selection module can select the subband that is not interfered and/or least interfered according to the subband usage information.
  • the working sub-band of the user does not require the operator to plan and deploy the working sub-band of the home base station in advance.
  • the home base station in each cell can flexibly select the working sub-band to solve the interference problem between the home base stations.
  • the embodiment of the present invention further provides a method for processing a interference.
  • the home base station sends the sub-band usage information to the home base station adjacent to the home base station by using a specific physical channel, to notify the neighboring home base station of the selected working node.
  • Band where a specific physical channel is used for subband usage information transmitted between the bearer home base stations.
  • the home base station sends a signal to the home base station adjacent to the home base station with a fixed power on a resource unit corresponding to its working subband through a specific physical channel; or the home base station adopts a specific physical channel, adopts a positive
  • the cross-code will be used to indicate that the bit data of the working sub-band used by the home base station is transmitted to the home base station adjacent to the home base station.
  • the home base station transmits its own sub-band usage information to the neighboring home base station, so that the neighboring home base station can select the sub-band with the least interference and/or no interference as its own working frequency. Solved the problem of interference between home base stations.
  • the embodiment of the present invention further provides a home base station, which may include a second sending module, where the second sending module includes a third sending unit, and the third sending unit is configured to use a resource unit corresponding to its working sub-band through a specific physical channel.
  • the home base station sends its own subband usage information to the neighboring home base station through the second sending module, so that the neighboring home base station can select the least interfered and/or undisturbed.
  • the subband solves the interference problem between the home base stations.
  • receiving in the above embodiments of the present invention may be understood as actively acquiring information from other modules or receiving information sent by other modules.
  • the above modules may be combined into one module, or may be further split into multiple sub-modules.
  • the instructions are related to hardware completion, and the program can be stored in a computer readable storage medium.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé de traitement de brouillage et sur une station de base domestique. Le procédé consiste à obtenir, par une station de base domestique qui doit réaliser un traitement de brouillage, des informations d'utilisation de sous-bande envoyées par une station de base domestique proche de la première station de base domestique citée. Les informations d'utilisation de sous-bande sont utilisées pour indiquer la sous-bande de fonctionnement employée par des stations de base domestiques. Conformément aux informations d'utilisation de sous-bande obtenues, la station de base domestique choisit la sous-bande qui reçoit le moins de brouillage et/ou ne reçoit aucun brouillage pour être la sous-bande de fonctionnement de la station de base domestique. Le procédé et la station de base domestique résolvent le problème de brouillage entre stations de base domestiques.
PCT/CN2010/075489 2009-07-27 2010-07-27 Procédé de traitement de brouillage de station de base domestique Ceased WO2011012067A1 (fr)

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CN200910089902.6A CN101969645B (zh) 2009-07-27 2009-07-27 干扰处理方法及家庭基站
CN200910089902.6 2009-07-27

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CN109511125B (zh) * 2018-11-15 2021-12-03 中国科学院上海微系统与信息技术研究所 一种无线网络中识别邻区干扰与异系统干扰的方法
CN115550961A (zh) * 2021-06-30 2022-12-30 华为技术有限公司 一种干扰测量方法及相关设备
CN114938717A (zh) * 2022-03-28 2022-08-23 北京小米移动软件有限公司 一种资源配置方法及其装置

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US20080233967A1 (en) * 2007-03-23 2008-09-25 Juan Montojo Backhaul communication for interference management
CN101352065A (zh) * 2005-11-28 2009-01-21 京瓷公司 用于在通信系统中分配唯一字的基站系统和方法
CN101668294A (zh) * 2008-09-03 2010-03-10 大唐移动通信设备有限公司 一种降低干扰的方法及系统

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Publication number Priority date Publication date Assignee Title
CN101420734A (zh) * 2008-11-28 2009-04-29 华为技术有限公司 下行干扰协调方法和基站

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101352065A (zh) * 2005-11-28 2009-01-21 京瓷公司 用于在通信系统中分配唯一字的基站系统和方法
US20080233967A1 (en) * 2007-03-23 2008-09-25 Juan Montojo Backhaul communication for interference management
CN101668294A (zh) * 2008-09-03 2010-03-10 大唐移动通信设备有限公司 一种降低干扰的方法及系统

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