WO2011026366A1 - Procédé et système de gestion de transfert d'une macrocellule à une cellule d'un nœud b domestique - Google Patents

Procédé et système de gestion de transfert d'une macrocellule à une cellule d'un nœud b domestique Download PDF

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Publication number
WO2011026366A1
WO2011026366A1 PCT/CN2010/074348 CN2010074348W WO2011026366A1 WO 2011026366 A1 WO2011026366 A1 WO 2011026366A1 CN 2010074348 W CN2010074348 W CN 2010074348W WO 2011026366 A1 WO2011026366 A1 WO 2011026366A1
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WO
WIPO (PCT)
Prior art keywords
cell
base station
macro
home base
measurement report
Prior art date
Application number
PCT/CN2010/074348
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English (en)
Chinese (zh)
Inventor
张现周
张文英
李虎虎
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2011026366A1 publication Critical patent/WO2011026366A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the present invention relates to a Long Term Evolution (LTE) mobile communication system, and in particular, to a handover method and system from a macro cell to a home base station cell.
  • LTE Long Term Evolution
  • the LTE mobile communication system is shown in Figure 1. It mainly includes: a core network (CN) and an access network (E UTRAN).
  • the core network mainly includes a mobility management entity (MME) and a serving gateway (S-GW), and the access network is evolved.
  • MME mobility management entity
  • S-GW serving gateway
  • the node B eNodeB, ENB
  • the core network and the access network are interconnected through the interface of the S1 (the interface between the core network and the access network), and the different eNodeBs in the access network are interconnected through the X2 interface. Interoperability.
  • the macro cell refers to a small area with a relatively large cover area, a relatively large transmission power, and a large number of supported users.
  • HNB Home Nodeb/eNodeB
  • UE User Equipment
  • the main object of the present invention is to provide a method and system for macro cell to home base station cell handover, which is used to solve the technical problem that the UE cannot switch from the macro cell to the home base station cell. question.
  • a method for switching a macro cell to a home base station cell includes:
  • the measurement report reported by the UE carries the home base station cell identifier that the UE wants to switch to; the macro base station performs the handover procedure according to the home base station cell identifier that the UE reports to switch to.
  • the method divides the X2 interface resource into a static part and a dynamic part, and the static part is used to establish an X2 connection between the macro cell and the macro cell; the dynamic part is used to establish an X2 connection between the macro cell and the home base station cell;
  • the macro base station After the macro base station receives the measurement report of the UE, the macro base station establishes, between the macro cell and the home base station cell that the UE wants to switch, according to the cell identifier of the home base station cell that the UE wants to switch to, using the dynamic part of the X2 resource.
  • the X2 connection and then triggers the switching process based on the X2 interface.
  • the macro base station releases the link of the established X2 interface after completing the handover to the home base station cell by using the dynamic part of the X2 resource.
  • the macro base station triggers the handover procedure based on the S1 interface according to the cell identifier of the home base station cell that the UE desires to handover.
  • the measurement report reported by the UE is extended to the measurement report reported by the UE to the macro base station, and at least the cell identification information of the home base station cell that the UE wishes to cut in is carried in the measurement report.
  • the present invention further provides a handover system of a macro cell to a home base station cell, including:
  • the upper 4 ⁇ module is located at the UE, and is used for measuring the neighboring cell, and determining the home base station cell to which the decision is to be handed over; if the measurement reporting condition is met, reporting to the macro base station, carrying the home base station 'j, the area identifier that the UE wants to switch to Measurement report;
  • the handover module is located at the macro base station, and is configured to perform a handover procedure according to the cell identifier of the home base station cell that the UE that the UE carries in the measurement report after receiving the measurement report of the UE.
  • system further includes:
  • the X2 interface resource management module is configured to divide the X2 interface resource into a static part and a dynamic part in the macro base station, the static part is used to establish an X2 connection between the macro cell and the macro cell, and the dynamic part is used to establish a macro cell to the home base station cell. Between the X2 connections;
  • the handover module After the macro base station receives the measurement report of the UE, the handover module establishes an X2 connection between the macro cell and the home base station cell according to the cell identifier of the home base station cell that the UE needs to switch to in the measurement report, using the dynamic part of the X2 resource. And then trigger the switching process based on the X2 interface.
  • the switching module releases the link of the established X2 interface after completing the handover to the home base station cell to which the UE wishes to switch, using the dynamic part of the X2 resource.
  • the switching module after receiving the measurement report of the UE, the switching module triggers the S1 interface-based handover procedure according to the cell identifier of the home base station cell that the UE that the UE carries in the measurement report.
  • the system extends the measurement report reported by the UE, and at least carries the cell identification information of the home base station cell that the UE wants to cut in the measurement report.
  • the present invention divides the X2 interface resource into dynamic and static parts.
  • the macro base station establishes the X2 to the home base station cell by using the X2 interface dynamic part according to the identifier of the home base station cell that the UE is to be handed over in the measurement report.
  • the connection triggering the switching based on the X2 interface, or switching through the S1 interface, solves the problem that the UE cannot switch from the macro cell to the home base station cell, improves the user experience, improves the system reliability, and increases the operator's Business income.
  • 1 is a network structure diagram of an LTE mobile communication system
  • FIG. 2 is a flow chart of implementing an X2 interface switching according to the present invention
  • FIG. 3 is a flow chart of implementing the SI interface switching according to the present invention. detailed description
  • Step 201 The X2 resource of the macro cell (the cell under the eNB) is divided into two parts: a dynamic part and a static part.
  • the statically configured X2 path is not used between the macro cell and the home base station cell, and the X2 path between the macro cell and the home base station cell is dynamically established by using dynamic X2 resources when needed.
  • the X2 interface of the dynamic part is dynamically established according to the specific handover needs, and is related to the UE call, and is used for switching to the home base station;
  • the static part X2 interface refers to the X2 interface part that changes unless the device is faulty or the configuration is modified once configured. , used for switching between macro base stations.
  • the division of dynamic and static parts is based on the needs of the business.
  • Step 202 The UE establishes an RRC connection with the access network, and the UE enters an RRC-CONNECTED state.
  • Step 203 The macro cell sends a measurement configuration to the UE by using an RRC reconfiguration request message.
  • Step 204 After receiving the measurement configuration, the UE starts the measurement according to the configuration, and sends an RRC reconfiguration complete message to the eNB.
  • Step 205 The UE performs measurement on the neighboring cell.
  • the UE reports a measurement report to the macro cell, where the measurement report includes the home base station cell identifier (ID) that the UE wishes to cut.
  • ID home base station cell identifier
  • Step 206 After receiving the measurement report reported by the UE, the macro cell establishes an X2 connection with the home base station by using the cell ID of the home base station that the UE wants to cut, and the X2 connection uses the dynamic part.
  • Step 207 After the X2 connection is successfully established, the X2 switching process is triggered.
  • Step 208 The X2 handover is completed, and the macro cell sends an X2 reset request message to release the X2 connection. Pick up.
  • Step 209 The home base station receives the X2 reset request message, sends an X2 reset response message, and releases the local X2 connection.
  • Step 210 The macro cell receives the X2 reset response, and releases the X2 connection on the macro base station side.
  • Step 301 The UE establishes an RRC connection with the access network, and the UE enters an RRC-CONNECTED state;
  • Step 302 The eNB sends a measurement configuration request to the UE by using an RRC reconfiguration request message.
  • Step 304 The UE performs measurement on the neighboring cell.
  • the measurement report is reported to the macro cell (eNB), where the measurement report includes the home base station cell identifier (ID) that the UE wishes to cut.
  • ID home base station cell identifier
  • Step 305 The macro cell receives the measurement report, and initiates the S1 interface switching through the core network by using the cell ID that the UE wants to cut.
  • This embodiment may be implemented based on a system that dynamically and statically partitions X2 resources, or based on an S1 interface.
  • the present invention extends the measurement report reported by the UE to the macro base station, and modifies the cell structure of the measurement report in the 3GPP 36.331 protocol version.
  • the specific extension manner is as follows:
  • measResultServCell SEQUENCE ⁇
  • the measResultUEExpectEUTRA is used to carry the cell identification information of the LTE home base station cell that the UE wants to cut in.
  • the structure is defined as follows:
  • MeasResultEUTRA SEQUENCE ⁇
  • the measResultUEExpectUTRA is used to carry the UTRA home base station cell identification information that the UE wants to cut in.
  • the structure is defined as follows:
  • the measResultUEExpectGERAN is used to carry the GSM home base station cell identification information that the UE wants to cut in.
  • the structure is defined as follows:
  • MeasResultGERAN SEQUENCE ⁇ carrierFreq CarrierFreqGERAN,
  • the UE After the above-mentioned structure is defined, the UE, after deciding the destination home base station cell that the user wants to switch to, according to the type of the home base station cell, fills in the corresponding structure with the information of the target home base station cell identifier and the measurement result that is to be switched to the macro base station.
  • the macro base station can switch according to the destination home cell identifier included in the measurement report.
  • the switching system disclosed by the invention can be divided into the following parts in terms of structure:
  • the X2 interface resource management module is configured to divide the X2 interface resource into a static part and a dynamic part in the macro base station, the static part is used to establish an X2 connection between the macro cell and the macro cell, and the dynamic part is used to establish a macro cell to the home base station cell. Between the X2 connections;
  • the upper 4 ⁇ module is located at the UE, and is used for measuring the neighboring cell, and determining the home base station cell that the user wants to switch to; if the measurement reporting condition is met, sending the home base station 'j, the area identifier that is to be switched to the macro base station measurement report;
  • the switching module is located at the macro base station, and is configured to perform handover after receiving the measurement report of the UE, according to the cell identifier of the home base station cell that the UE carried in the measurement report wants to handover.
  • the handover module After receiving the measurement report of the UE, the handover module establishes an X2 connection between the macro cell and the home base station cell according to the cell identifier of the home base station cell that the UE needs to switch to in the measurement report, and then establishes an X2 connection between the macro cell and the home base station cell. Triggering a handover process based on the X2 interface; Or, after receiving the measurement report of the UE, the handover module triggers the handover process based on the S1 interface according to the cell identifier of the home base station cell that the UE needs to switch to in the measurement report.

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

Abstract

La présente invention se rapporte à un procédé et à un système de gestion de transfert d'une macrocellule à une cellule d'un nœud B domestique (HNB). Le procédé et le système selon l'invention permettent de résoudre le problème technique lié au fait qu'un équipement utilisateur (EU) ne peut pas être transféré d'une macrocellule à une cellule d'un HNB. Dans la présente invention, les ressources de l'interface X2 sont divisées entre une partie dynamique et une partie statique. Durant l'opération de transfert, en fonction de l'identifiant contenu dans le rapport de mesure de la cellule du HNB à laquelle l'EU souhaite être transféré, le macro Nœud B utilise la partie dynamique de l'interface X2 pour établir une connexion X2 à la cellule du HNB et il déclenche le transfert sur la base de l'interface X2; sinon, en fonction de l'identifiant contenu dans le rapport de mesure de la cellule du HNB à laquelle l'EU souhaite être transféré, le macro Nœud B déclenche le transfert intercellulaire sur la base d'une interface S1. La solution de la présente invention permet de résoudre le problème lié au fait qu'un EU ne peut pas être transféré d'une macrocellule à une cellule d'un HNB. Cette solution améliore l’expérience utilisateur, renforce la fiabilité du système et augmente les revenus liés aux services fournis par les opérateurs.
PCT/CN2010/074348 2009-09-04 2010-06-23 Procédé et système de gestion de transfert d'une macrocellule à une cellule d'un nœud b domestique WO2011026366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910091990.3 2009-09-04
CN 200910091990 CN102014421B (zh) 2009-09-04 2009-09-04 一种宏小区到家庭基站小区的切换方法及系统

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CN102883440B (zh) 2011-07-15 2015-11-25 华为技术有限公司 一种无线宽带通信方法，装置和系统
CN102917422B (zh) * 2011-08-05 2017-04-12 中兴通讯股份有限公司 一种切换到家庭基站的切换方法及基站
US9603087B2 (en) 2011-10-18 2017-03-21 Broadcom Corporation Green femtocells and methods of implementing the same
US9479978B2 (en) 2011-10-18 2016-10-25 Broadcom Corporation Method for determining a handover between a macrocell and a femtocell
CN102598786B (zh) * 2011-11-11 2014-06-04 华为技术有限公司 基站间的切换方法、基站、和通讯系统
CN103220815B (zh) * 2012-01-18 2019-02-15 中兴通讯股份有限公司 一种基站间接口连接建立方法及装置
CN103220742A (zh) * 2013-05-02 2013-07-24 天津大学 一种LTE系统中宏基站与femtocell之间的切换方法

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US20090005099A1 (en) * 2007-06-29 2009-01-01 Samsung Electronics Co., Ltd. Apparatus and method for supporting handover between home cell and macro cell in wireless communication system
CN101466125A (zh) * 2008-12-10 2009-06-24 上海华为技术有限公司 切换处理方法、家庭基站网关及网络系统
CN101521870A (zh) * 2008-02-28 2009-09-02 三星电子株式会社 支持ue在宏小区和hnb小区间移动性的方法

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CN101521870A (zh) * 2008-02-28 2009-09-02 三星电子株式会社 支持ue在宏小区和hnb小区间移动性的方法
CN101466125A (zh) * 2008-12-10 2009-06-24 上海华为技术有限公司 切换处理方法、家庭基站网关及网络系统

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