WO2012094995A1 - Procédé, dispositif et nœud b évolué pour mettre en œuvre une comp - Google Patents

Procédé, dispositif et nœud b évolué pour mettre en œuvre une comp Download PDF

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Publication number
WO2012094995A1
WO2012094995A1 PCT/CN2012/070208 CN2012070208W WO2012094995A1 WO 2012094995 A1 WO2012094995 A1 WO 2012094995A1 CN 2012070208 W CN2012070208 W CN 2012070208W WO 2012094995 A1 WO2012094995 A1 WO 2012094995A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
edge user
base station
comp
central
Prior art date
Application number
PCT/CN2012/070208
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English (en)
Chinese (zh)
Inventor
张华炜
陈莉娜
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2012094995A1 publication Critical patent/WO2012094995A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • 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
    • H04W16/24—Cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, an apparatus, and a base station for implementing a coordinated multipoint technology CoMP. Background technique
  • CoMP ( coordinated multi-point ) is a cooperative multipoint technology that includes downlink CoMP transmission and uplink CoMP reception.
  • the uplink CoMP receives the combined reception of user equipment data by multiple cells to improve the throughput of the user equipment, and uses the joint processing method to obtain the transmission gain.
  • the CoMP includes an intra-eNodeB in the base station and an inter-eNodeB CoMP between the base stations. Intra-eNodeB CoMP cooperation occurs in one base station and is cooperation between different cells in the same base station. Inter-eNodeB CoMP cooperation occurs between different base stations and is a cooperation between different cells of different base stations.
  • ICIC Inter-Cell Interference Coordination
  • the ICIC frequency domain coordination divides the frequency band into three parts, each of which uses 1/3 of the frequency band as the edge user equipment band and the remaining 2/3 band as the central user equipment band.
  • the ICIC frequency domain coordination algorithm needs to divide the frequency band into the edge frequency band and the center frequency band, and try to make the edge user equipment dispatch in the edge frequency band.
  • the ICIC algorithm therefore differentiates the user equipment into edge user equipment and central user equipment.
  • ICIC edge user equipment decision is based on downlink RSRP (Reference Signal Receiving)
  • the user equipment is determined to be the edge user equipment. If not less than, the user equipment is determined as the central user equipment.
  • ICIC When uplink intra-eNodeB CoMP and ICIC technologies are combined, ICIC enables neighboring cells
  • the edge user equipment uses different frequency resources, and the P strip lowers the interference between the user equipments at the edge of the neighboring area, thereby improving the throughput of the edge user equipment.
  • CoMP uses interference to obtain interference suppression gain to improve the performance gain of CoMP user equipment.
  • the CoMP user equipment is an ICIC edge user equipment, since the ICIC staggers the interference between the edge user equipment frequency bands, the interference level is lowered, so that the interference suppression capability of the CoMP is reduced, thereby causing the performance gain of the ICIC combined with the CoMP compared to the CoMP. The performance gain is reduced.
  • the present invention provides a method and an apparatus for implementing a coordinated multi-point technology CoMP, which solves the problem that the performance gain of ICIC combined with CoMP is lower than that of CoMP in the prior art, and the specific solution is as follows:
  • a cooperative multi-point technology CoMP implementation method including:
  • Determining that the user equipment whose difference is less than the preset threshold is an optional edge user equipment, and the user equipment that is not less than the preset threshold is the central user equipment;
  • a cooperative multi-point technology CoMP implementation device including:
  • An acquiring module configured to obtain a difference between a reference signal received power RSRP of a serving cell of the determined user equipment and a neighboring cell of the serving cell;
  • a first determining module configured to determine that the user equipment whose difference is less than the preset threshold is an optional edge user equipment, and the user equipment that is not less than the preset threshold is a central user equipment;
  • a second determining module configured to determine, as the central user equipment, the user equipment that meets the preset condition in the candidate edge user equipment, to perform frequency selection scheduling in the central frequency band;
  • the CoMP module is configured to perform CoMP on the central user equipment.
  • a base station includes: the cooperative multi-point technology CoMP implementation device as above.
  • FIG. 1 is a flowchart of a method for implementing a CoMP according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for implementing another CoMP according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for implementing a CoMP according to an embodiment of the present invention.
  • the present invention discloses a method for implementing the CoMP, and the specific implementation manner is as follows:
  • the flow of the method for implementing the CoMP disclosed in the present invention is as shown in FIG. 1 , and the method includes the following steps:
  • Step S11 Acquire a serving cell of the user equipment to be determined The difference between the reference signal received power and the RSRP of the neighboring cell of the serving cell; it can be understood that the serving cell is the serving cell where the user equipment is currently located.
  • Step S12 it is determined whether the difference is less than the preset threshold, and if so, step S13 is performed, and if not, step S14 is performed;
  • the preset threshold value is a value arbitrarily set according to actual conditions.
  • Step S13 determining that the user equipment is an alternate edge user equipment, performing step S15;
  • the alternate edge user equipment is not a real attribute of the user equipment, but an intermediate process parameter set to facilitate subsequent determination.
  • the attributes of the user equipment still only include: CEU (Cell edge user) and CCU (Cell center user).
  • Step S14 determining that the user equipment is the central user equipment, performing step S16;
  • Step S15 Determine, in the candidate edge user equipment, the user equipment that meets the preset condition as the central user equipment, so that the frequency selection scheduling is performed in the central frequency band.
  • the attribute of the user equipment that meets the preset condition in the candidate edge user equipment is set to ccu.
  • Step S16 Perform CoMP on the central user equipment.
  • CoMP is performed on the user equipment whose user equipment attribute is CCU.
  • the user equipment that meets the preset condition may be an intra-base station edge user equipment in the intra-eNodeB CoMP, and may be an inter-base station edge user equipment in the inter-eNodeB CoMP.
  • This embodiment does not limit the number and type of user equipments that meet the preset conditions.
  • the attributes can be set to CCU.
  • frequency scheduling is then performed in the central frequency band to obtain more frequency selective scheduling gains and introduce interference.
  • the interference introduced by the central user equipment determined in step S15 is suppressed by CoMP technology to obtain interference suppression gain.
  • the user equipment that meets the preset condition in the edge user equipment determined in the prior art is used as the central user equipment, so that the edge band is 1/3 edge compared with the original algorithm.
  • the frequency selection scheduling more frequency selection scheduling gains can be obtained, and the introduced interference can be eliminated by CoMP technology to achieve the purpose of obtaining interference suppression gain and improving system performance.
  • This method can be applied to the combination of uplink intra-eNodeB CoMP and ICIC technology.
  • the device type decision can also be applied to the downlink user equipment type discrimination, or the scenario where the inter-eNodeB CoMP and the ICIC technology are combined between the base stations, but in this scenario, the user equipment that meets the preset condition is the inter-base station edge user equipment. , identify it as a central user device to achieve the above purpose.
  • the scheduling principle is basically similar to that of the uplink.
  • the edge user equipment is preferentially called in the edge frequency band
  • the central user equipment is preferentially called in the central frequency band.
  • the method may further include:
  • Step S17 Determine that the candidate edge user equipment other than the central user equipment is an edge user equipment.
  • This embodiment does not limit the step of performing CoMP on the central user equipment. Before this step, the process of performing CoMP on the central user equipment may be performed after the edge user equipment is determined to achieve the purpose of eliminating interference.
  • Step S21 taking the difference between the reference signal receiving power RSRP of the current serving cell of the determined user equipment and the neighboring cell;
  • Step S22 determining whether the difference is less than the preset threshold, if yes, proceeding to step S23, and if not, executing step S24;
  • Step S23 Determine that the user equipment is an alternate edge user equipment.
  • Step S24 determining that the user equipment is the central user equipment, performing step S28;
  • Step S25 Determine whether the candidate edge user equipment is an edge user equipment in the base station, and if so, Step S26 is performed, if no, step S27 is performed;
  • Step S26 determining that the candidate edge user equipment is the central user equipment, so that it performs frequency selection scheduling in the central frequency band, and step S28 is performed;
  • Step S27 Determine that the candidate edge user equipment is an edge user equipment.
  • Step S28 Perform CoMP on the central user equipment.
  • the user equipment that meets the conditions of the user equipment in the edge of the base station is determined as the central user equipment by performing further discriminating on the candidate edge user equipment.
  • the condition that the part of the user equipment in the alternative edge user equipment is determined as the central user equipment may be preset according to actual needs.
  • the user equipment in the candidate edge user equipment that meets the conditions of the inter-base station edge user equipment may be determined as the central user equipment.
  • the intra-base station user equipment that is determined to be the central user equipment can be scheduled on a wider 2/3 center frequency band, so that a higher SINR (Signal to Interference plus Noise Ratio) can be obtained.
  • SINR Signal to Interference plus Noise Ratio
  • the frequency selection scheduling is performed in the 1/3 edge band, and more frequency selection scheduling gains can be obtained.
  • the interference introduced by the user equipment at the inner edge of the base station can obtain the interference suppression gain through CoMP technology, so the frequency selection scheduling gain and the interference suppression gain can be obtained at the same time, and the ICIC combined with the CoMP performance is improved.
  • the determining process for the user equipment in the inner edge of the base station in this embodiment may be: determining whether the current serving cell of the candidate edge user equipment and the neighboring cell of the measured RSRP belong to the same base station. If yes, the candidate edge user The device is an intra-base station edge user equipment. If not, the candidate edge user equipment is not an intra-base station edge user equipment, and is determined as an edge user equipment.
  • the candidate edge device belonging to the neighboring base station in the neighboring cell of the measured RSRP may be selected as the inter-base station edge user equipment, and the inter-base station edge user equipment is determined as the center.
  • the present invention discloses a device for implementing CoMP, and the structure thereof is as shown in FIG. 3, including: an obtaining module 31, a first determining module 32, a second determining module 33, and a CoMP module 34, among them:
  • the obtaining module 31 is configured to obtain a difference between the reference signal received power RSRP of the serving cell of the user equipment and the neighboring cell, and it is understood that the serving cell of the user equipment is the serving cell where the user equipment is currently located;
  • the determining module 32 is configured to determine that the user equipment whose difference is less than the preset threshold is an optional edge user equipment, and the user equipment that is not smaller than the preset threshold is the central user equipment;
  • the user equipment that meets the preset condition in the candidate edge user equipment is determined as the central user equipment to perform frequency selection scheduling in the central frequency band; and the CoMP module 34 is configured to perform CoMP on the central user equipment.
  • the foregoing apparatus further includes: an edge user equipment determining module 35, configured to determine that the edge user equipment other than the central user equipment is an edge user equipment.
  • the second determining module 33 includes:
  • a first determining unit 331, configured to determine whether the candidate edge user equipment is an intra-base station user equipment or an inter-base station edge user equipment;
  • the third determining unit 332 is configured to determine that the intra-area user equipment of the base station or the inter-base station edge user equipment is the central user equipment.
  • the first determining unit 331 includes: a second determining sub-unit 3311, configured to determine whether the current serving cell of the candidate edge user equipment and the neighboring cell belong to the same base station; and a fourth determining sub-unit 3312, configured to determine The candidate edge user equipment of the current serving cell and the neighboring cell belonging to the same base station is an intra-base station edge user equipment.
  • This embodiment does not limit the structure of the implementation device of the CoMP. As shown in FIG. 3, the specific structure may be adjusted according to the implementation function thereof. As long as the structure capable of realizing the function of the device is protected by the embodiment. range.
  • the first determining unit determines whether the difference is less than a preset threshold, and the difference is less than a preset.
  • the user equipment of the threshold is determined as an alternative edge user equipment, and the user equipment that is not less than the preset threshold is determined as the central user equipment, and the second determining unit selects the preset from the candidate edge user equipment.
  • the conditional user equipment is determined to be the central user equipment, This part of the user equipment can be scheduled on a wider frequency band to obtain a certain scheduling gain.
  • the present invention further discloses a base station, including a CoMP device, configured to acquire a difference between a reference signal received power RSRP of a current serving cell and a neighboring cell of the determined user equipment;
  • the user equipment with the threshold value is an optional edge user equipment, and the user equipment that is not less than the preset threshold value is the central user equipment; the user equipment that meets the preset condition in the candidate edge user equipment is determined as Central user equipment to perform frequency selection scheduling in a central frequency band; CoMP 0 for the central user equipment
  • the specific structure of the CoMP device in this embodiment can be as shown in FIG.
  • the various embodiments in the specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments can be referred to each other.
  • the comparison is described, and the relevant part can be referred to the method part.
  • RAM random access memory
  • ROM read only memory
  • EEPROM electrically programmable ROM
  • EEPROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or technical fields. Any other form of storage medium known.

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

Abstract

L'invention porte sur un procédé, un dispositif et un nœud B évolué pour mettre en œuvre une transmission multipoint coordonnée (CoMP). Le procédé consiste à : acquérir une différence de puissance de réception de signal de référence (RSRP) entre une cellule de desserte d'un équipement utilisateur décidé et une cellule voisine ; déterminer un équipement utilisateur ayant une différence inférieure à un seuil préréglé en tant qu'équipement utilisateur de bordure candidat, et déterminer un équipement utilisateur ayant une différence non inférieure au seuil préréglé en tant qu'équipement utilisateur central ; déterminer un équipement utilisateur, parmi les équipements utilisateur de bordure candidats, qui satisfait une condition préréglée en tant qu'équipement utilisateur central, de telle sorte que sa sélection de fréquence et sa planification sont effectuées dans une bande centrale ; et effectuer une CoMP sur les équipements utilisateur centraux. Dans le procédé de mise en œuvre de CoMP décrit dans le mode de réalisation de la présente invention, il est décidé qu'une partie des équipements utilisateur de bordure sont des équipements utilisateur centraux, et conformément à un critère de planification ICIC, cette partie des équipements utilisateur centraux peuvent être planifiés sur une bande plus large, et un certain gain de planification est obtenu. Le brouillage occasionné par cette partie des équipements utilisateur centraux peut être supprimé par l'intermédiaire de la technologie CoMP, de façon à obtenir un gain de suppression de brouillage CoMP. En conséquence, l'intégration de mise en œuvre entre ICIC et CoMP est davantage améliorée.
PCT/CN2012/070208 2011-01-12 2012-01-11 Procédé, dispositif et nœud b évolué pour mettre en œuvre une comp WO2012094995A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011100056037A CN102076096B (zh) 2011-01-12 2011-01-12 一种 CoMP的实现方法、装置及基站
CN201110005603.7 2011-01-12

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CN102076096B (zh) * 2011-01-12 2013-08-28 上海华为技术有限公司 一种 CoMP的实现方法、装置及基站
WO2012106924A1 (fr) * 2011-07-25 2012-08-16 华为技术有限公司 Procédé, équipement et système d'émission/réception multipoints coordonnées
CN102917411A (zh) * 2011-08-04 2013-02-06 中兴通讯股份有限公司 下行静态icic的判别方法及基站
CN102281647A (zh) 2011-09-09 2011-12-14 华为技术有限公司 联合调度方法及装置
WO2013056394A1 (fr) * 2011-10-19 2013-04-25 Telefonaktiebolaget L M Ericsson (Publ) Détermination de la position d'un ue dans une cellule
CN102448174B (zh) * 2012-01-09 2015-08-12 中兴通讯股份有限公司 一种无线资源控制方法和装置
CN103686748B (zh) * 2012-09-26 2017-05-31 普天信息技术研究院有限公司 一种下行链路中边缘用户划分的方法
WO2014101218A1 (fr) 2012-12-31 2014-07-03 华为技术有限公司 Système de grappe intégrée de calcul et de stockage
CN104247287A (zh) * 2012-12-31 2014-12-24 华为技术有限公司 一种确定CoMP用户的方法和设备
CN103916889A (zh) * 2013-01-08 2014-07-09 华为技术有限公司 一种数据传输的方法和设备
CN103415051B (zh) * 2013-07-31 2017-07-21 华为技术有限公司 一种协作多点处理方法及设备
WO2015061924A1 (fr) * 2013-11-01 2015-05-07 上海贝尔股份有限公司 Procédé et appareil de suppression de brouillage entre cellules
CN106304089B (zh) * 2015-05-11 2019-07-23 普天信息技术有限公司 一种下行CoMP实现方法及接入设备
CN106714306A (zh) * 2015-07-14 2017-05-24 普天信息技术有限公司 CoMP资源的动态分配方法及基站
CN107567096B (zh) * 2016-06-30 2021-01-22 中兴通讯股份有限公司 消除同频干扰的方法及装置

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CN102076096B (zh) 2013-08-28

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