WO2009107950A2 - Procédé de support de mobilité d'un équipement utilisateur (ue) entre une macrocellule et une cellule hnb - Google Patents

Procédé de support de mobilité d'un équipement utilisateur (ue) entre une macrocellule et une cellule hnb Download PDF

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Publication number
WO2009107950A2
WO2009107950A2 PCT/KR2009/000842 KR2009000842W WO2009107950A2 WO 2009107950 A2 WO2009107950 A2 WO 2009107950A2 KR 2009000842 W KR2009000842 W KR 2009000842W WO 2009107950 A2 WO2009107950 A2 WO 2009107950A2
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WO
WIPO (PCT)
Prior art keywords
hnb
information
accessible
message
list
Prior art date
Application number
PCT/KR2009/000842
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English (en)
Other versions
WO2009107950A3 (fr
Inventor
Hong Wang
Lixiang Xu
Xiaoqiang Li
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Samsung Electronics Co., Ltd.
Beijing Samsung Telecom R & D Center
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Samsung Electronics Co., Ltd., Beijing Samsung Telecom R & D Center filed Critical Samsung Electronics Co., Ltd.
Publication of WO2009107950A2 publication Critical patent/WO2009107950A2/fr
Publication of WO2009107950A3 publication Critical patent/WO2009107950A3/fr

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    • 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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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

  • This invention relates to communication field, and in particular to a method for supporting user equipment (UE) mobility between macro cell and Home Node B (HNB) cell.
  • UE user equipment
  • HNB Home Node B
  • UE User Equipment
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • SAE evolved system SAE
  • ENB evolved Node B or eNodeB
  • MME Mobile Management Entity
  • user plane entity 104 Serving Gateway via an interface S1.
  • 103 MME responsible for managing the UE’s mobile context and session context, and saving user information about security.
  • the S1-MME interface is responsible for providing the UE with wireless access bearer establishment, and forwarding messages sent from UE to MME through the wireless access network.
  • the combined function of 103 MME and 104 Serving Gateway is similar to that of the original 106 SGSN (general packet radio service (GPRS) supporting node). And it is possible that both MME and Serving Gateway locate at the same physical entity.
  • GPRS general packet radio service
  • the existing SGSN finds a corresponding Gateway GPRS(General Packet Radio Service) Supporting Node (GGSN) according to Access Point Name (APN).
  • GGSN Gateway GPRS(General Packet Radio Service) Supporting Node
  • APIPN Access Point Name
  • HSS Home Subscription Sub-system of the UE. It is responsible for storing user information including the UE’s current location, the serving node’s address, user information about security, the UE activated packet data protocol (PDP) context and so on.
  • PDP packet data protocol
  • PCRF Policy and Charging Rules Function
  • a user data stream reaches the 104 Serving Gateway through 105 PDN Gateway. Then, through the GPRS tunnel protocol (GTP) channel, data is sent by the Serving Gateway to the ENB where the UE locates, and then is sent by the ENB to the corresponding UE.
  • GTP GPRS tunnel protocol
  • FIG. 5 shows the structure of the interface S1 in SAE, where EPC is an evolved core network.
  • EPC is an evolved core network.
  • each eNB is connected with multiple MMEs in an MME pool.
  • Each eNodeB is connected with multiple S-GWs in an S-GW Pool.
  • the HNB is a node B used at home and can be also applied at universities and companies, etc.
  • the HNB is Plug-and-Play.
  • the HNB can access MME through the interface S1.
  • the difference between the HNB and a general macro node B lies in: usually not all UEs can access the HNB. For instance, only the UEs in a user’s home or the UEs that are allowed to access the HNB can access the corresponding HNB. And for the HNB in a company, only the company’s staff and the authorized partners can access the HNB. And a group of HNBs having the same group of accessing subscribes (e.g., the HNB in a company) is called CSG (Closed Subscriber Group).
  • CSG Click Subscriber Group
  • multi-TA mechanism is adopted.
  • MME When the UE initiates a TA(Tracking Area) update process in macro cells (near HNB), MME notifies the UE of neighbouring multi-TA lists that UE can access via a TA update response message. Then, the UE saves such TA list upon the receipt of it. In this way, the UE will not cause a TA update process when moving in these multiple TAs (including TA of the HNB).
  • the macro cell since HNB can be accessed only by limited user groups, the macro cell shall ensure CSG UEs are able to make correct response and prevent non-CSG UEs from unnecessary actions during measurement and handover decision. Moreover, under some circumstances where the network is required to cooperate with the UE for measurements it is necessary that the network knows information on user access right and neighbouring HNBs.
  • the object of the present invention is to provide a method for supporting UE mobility between macro cell and home node B (HNB), where the macro node B can obtain necessary information from the network, control UE measurement and make correct handover decision.
  • HNB home node B
  • a method for supporting UE moving between macro cell and home node B includes the following steps:
  • a MME(Mobile Management Entity) receives UE accessible HNB information from a higher layer network entity
  • the MME sends the UE accessible HNB information to an eNB,
  • the eNB determines a handover based on the UE accessible HNB information.
  • the macro cell can obtain UE accessible HNB information, so as to enable the network to control UE measurement and assist UE mobility between macro cell and HNB cell.
  • Figure 1 shows the structure of the SAE system network
  • Figure 2 shows UE attach procedure
  • FIG. 3 shows HNB auto-configuration process
  • Figure 4 shows a procedure of macro node B controlling UE handover with the information obtained from the network
  • FIG. 5 shows S1 interface
  • the 201 UE sends an “Attach Request” message to MME(Mobile Management Entity).
  • the “Attach Request” message includes IMSI(International Mobile Subscriber Identity) or older global unique temporary identifier (GUTI).
  • the message also includes track area identifier (TAI) last accessed by the UE.
  • TAI track area identifier
  • UE authentication process is performed if the network has no UE context information corresponding to the UE, otherwise the authentication process is optional. To be noted, at the time of initial attach, integrity check should be started, and ME identity should be found back from the UE.
  • the MME sends an “update location” message to HSS.
  • the 204 HSS sends an “insert subscriber data” message to MME.
  • the subscriber data includes a list of APNs accessible to the user, default APN(Access Point Name) indication and QoS information of each PDN.
  • the subscriber data includes the UE accessible HNB information.
  • the HNB information include a HNB TA list (white TA list) accessible to the UE.
  • the HNB information include a list of HNB IDs accessible to the UE.
  • 206 HSS sends an “update location acknowledgement” message to MME for acknowledging the update location message.
  • 207 MME sends an “establish default bearer request” message to a selected Serving GW.
  • the Serving GW sends the “establish default bearer request” message to PDN GW.
  • PDN GW and PCRF interact to obtain a default PCC policy for the UE.
  • PDN GW sends an “establish default bearer response” message to the Serving GW.
  • the Serving GW sends the “establish default bearer response” message to MME.
  • MME sends an “initial context setup request” message to an eNB where the UE is located.
  • the “initial context setup request” message includes the UE accessible HNB information.
  • the HNB information includes the white TA list accessible to this UE.
  • the white TA list is optional information element.
  • the HNB information can also contains a HNB ID list accessible to this UE.
  • the HNB ID list is optional information element.
  • MME sends NAS(Non Access Stratum) message “Attach Accept” to the eNB by means of the “initial context setup request” message (via NAS PDU (protocol data unit) field).
  • the “Attach Accept” message includes information element the ‘white TA list’ accessible to the UE, and such information element is optional.
  • the “Attach Accept” message can also be sent via an individual S1 message for sending downlink NAS messages, such as “downlink NAS transport” message.
  • the eNB sends a “radio bearer establishment request” message to the UE.
  • the message “Attach Accept” will be sent together to the UE.
  • the “Attach Accept” message also can be sent via an individual air interface downlink message for sending downlink NAS messages.
  • the UE sends a “radio bearer setup response” message to the eNB.
  • the message includes a “Attach Complete” message.
  • a “Attach Complete” message can also be sent via an individual air interface uplink message for sending uplink NAS messages.
  • the eNB forwards the “Attach Complete” message to MME. This message is included in an “initial context setup response” message.
  • the “Attach Complete” message can also be sent via an individual S1 message for sending uplink NAS messages, such as “uplink NAS sent” message.
  • the Serving GW sends an “update bearer response” message to MME. From now on, the Serving GW can send buffered downlink packets.
  • Figure 3 shows an auto-configuration process of the HNB. Following is a detailed description of this figure. And detailed technical description of any technique irrelevant to the present invention is omitted here.
  • the HNB sends a “power-on request” message to an Operation and Maintenance center (OAM).
  • OAM Operation and Maintenance center
  • the message contains location information of the HNB.
  • OAM sends a “power-on response” message to the HNB.
  • One method is that OAM selects a frequency for the HNB based on the location information of the HNB, and then sends the result to the HNB through a “power-on response” message.
  • the other one is that OAM selects a set of candidate frequencies for the HNB based on the location information of the HNB, and then sends the set to the HNB through a “power-on response” message.
  • OAM sends MME IP address to which the HNB will be connected, information of neighbouring macro cells and a primary scramble code allocated to the HNB to the HNB through the power-on response message.
  • the “power-on response” message can also include a TA ID allocated to the HNB.
  • the “power-on response” message can also include HNB ID.
  • the HNB has a search function similar to that of the UE. After receiving the power-on response message, the HNB searches and measures the information of the neighbouring cells corresponding to the frequency in the message, and selects the searched frequency with minimum interference as its operating frequency.
  • the HNB sends a “measurement report” message and a list of primary scramble codes searched by the HNB to OAM.
  • the HNB informs OAM of the frequency chosen by the HNB through the measurement report message.
  • OAM allocates a primary scramble code to the HNB based on those primary scramble codes in the measurement report.
  • OAM sends a “measurement confirmation” message to the HNB.
  • This message contains the information of neighbouring macro cells, the primary scramble code allocated to the HNB.
  • the “measurement confirmation” message can also include the TA ID allocated to the HNB.
  • the “measurement confirmation” message can also contain HNB ID.
  • the “measurement confirmation” message can also contain MME IP address to which the HNB will be connected.
  • the 305 OAM sends an “neighbouring cell configuration information” message to eNBs in neighbouring macro cells.
  • the “neighbouring cell configuration information” message contains the frequency and primary scramble code corresponding to the HNB.
  • this message also contains HNB ID.
  • Figure 4 shows a procedure of macro node B controlling UE handover with information obtained from the network. Following is a detailed description to this figure.
  • the network includes macro node B, HeNB, MME, HSS and OAM.
  • the network also includes other functional entities in SAE system.
  • the network also includes functional entities in UMTS system.
  • the steps 401 and 402 can also be performed in an order different from the above process.
  • the information includes HNB information accessible to the UE.
  • the HNB information includes the white TA list accessible to the UE, HNB ID list accessible to the UE and other information.
  • the macro node B saves information of neighbouring cells (including the HNB cell), which comprises the frequency, primary scramble code and HNB ID of the HNB cell, through the step 401.
  • the macro node B finds that the UE has moved close to an HNB accessible to the UE.
  • the first method is shown in the above Figure 3, where OAM notifies the macro node B of its cells neighbouring to the HNB cell.
  • a list of macro cell IDs is contained in the “power-on response” or “measurement confirmation” messages. So, when the UE moves to one of these cells and can access the neighbouring HNB cell, the macro node B can control the UE to measure the HNB cell.
  • the second method is that, when the UE moves to this macro node B and can access the neighbouring HNB cell, the macro node B can control the UE to measure the HNB cell.
  • the macro node B sends a “measurement control” message to the UE. This message includes the frequency used by the HNB.
  • the UE implements a measurement process.
  • the UE sends a “measurement report” message to the eNB.
  • the “measurement report” message includes the primary scramble code and measurement result of the reporting cell.
  • the eNB determines whether the UE can be switched to the HNB cell based on the HNB information accessible to the UE and the measurement result of the UE.

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

Abstract

L'invention concerne un procédé de support d'un équipement utilisateur (UE) se déplaçant entre une macrocellule et un noeud local B (HNB), comprenant les étapes suivantes: le macronoeud B obtient des informations HNB associées et des informations auxquelles peut accéder l'UE à partir d'un réseau; une MME (Entité de gestion mobile) reçoit des informations HNB accessibles à l'UE à partir d'une entité de réseau de couche supérieure; et la MME envoie les informations HNB accessibles à l'UE à un eNB, le eNb déterminant un transfert en fonction des infrmations HNB accessibles à l'UE. Le procédé de la présente invenntion la macrocellule peut obtenir des informations HNB accessibles à l'UE depuis le réseau de manière à permettre au réseau de commander la mesure de l'UE et d'assister le transfert de l'UE entre la macrocellule et la cellule HNB.
PCT/KR2009/000842 2008-02-28 2009-02-23 Procédé de support de mobilité d'un équipement utilisateur (ue) entre une macrocellule et une cellule hnb WO2009107950A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810082025.5 2008-02-28
CN200810082025A CN101521870A (zh) 2008-02-28 2008-02-28 支持ue在宏小区和hnb小区间移动性的方法

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WO2009107950A3 WO2009107950A3 (fr) 2009-11-26

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WO2011041748A3 (fr) * 2009-10-02 2011-07-07 Research In Motion Limited Système et procédé d'évaluation d'un transfert dans un réseau sans fil
EP2346282A1 (fr) * 2010-01-13 2011-07-20 ST-Ericsson (France) SAS Gestion de transferts entre un E-NODE-B et un E-NODE-B domestique
EP2355579A1 (fr) 2010-02-09 2011-08-10 Telefonaktiebolaget L M Ericsson (publ) Configuration de transfert optimisé
CN102695228A (zh) * 2012-06-07 2012-09-26 中国科学技术大学 一种预切换的方法、网络系统及家庭基站
CN102917392A (zh) * 2011-08-05 2013-02-06 华为技术有限公司 小区测量和测量控制的方法及设备
EP2636250A1 (fr) * 2010-12-03 2013-09-11 Huawei Technologies Co., Ltd. Système et procédé de prise en charge de mobilité d'un équipement d'utilisateur dans un réseau hétérogène
CN104363620A (zh) * 2014-10-29 2015-02-18 中国联合网络通信集团有限公司 一种负荷分担方法及装置
US9380449B2 (en) 2009-10-02 2016-06-28 Blackberry Limited Closed Subscriber Group measurement reporting
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CN102026401B (zh) * 2009-09-21 2014-09-10 中兴通讯股份有限公司 移动性处理方法及装置
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WO2007103369A2 (fr) * 2006-03-07 2007-09-13 Interdigital Technology Corporation Procédé et appareil pour la prise en charge du transfert intercellulaire dans un système de communication sans fil lte gtp
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US10632205B2 (en) 2006-05-12 2020-04-28 Intellipharmaceutics Corp Pharmaceutical composition having reduced abuse potential
US10863374B2 (en) 2009-10-02 2020-12-08 Blackberry Limited Mobility in a wireless network
WO2011041748A3 (fr) * 2009-10-02 2011-07-07 Research In Motion Limited Système et procédé d'évaluation d'un transfert dans un réseau sans fil
US9961583B2 (en) 2009-10-02 2018-05-01 Blackberry Limited Mobility in a wireless network
US9380449B2 (en) 2009-10-02 2016-06-28 Blackberry Limited Closed Subscriber Group measurement reporting
EP2346282A1 (fr) * 2010-01-13 2011-07-20 ST-Ericsson (France) SAS Gestion de transferts entre un E-NODE-B et un E-NODE-B domestique
US8849271B2 (en) 2010-02-09 2014-09-30 Telefonaktiebolaget L M Ericsson (Publ) Optimized handover configuration
EP2355579A1 (fr) 2010-02-09 2011-08-10 Telefonaktiebolaget L M Ericsson (publ) Configuration de transfert optimisé
WO2011099919A1 (fr) 2010-02-09 2011-08-18 Telefonaktiebolaget L M Ericsson (Publ) Configuration optimisée de transfert
EP2636250A1 (fr) * 2010-12-03 2013-09-11 Huawei Technologies Co., Ltd. Système et procédé de prise en charge de mobilité d'un équipement d'utilisateur dans un réseau hétérogène
EP2636250A4 (fr) * 2010-12-03 2013-11-20 Huawei Tech Co Ltd Système et procédé de prise en charge de mobilité d'un équipement d'utilisateur dans un réseau hétérogène
US8838110B2 (en) 2010-12-03 2014-09-16 Futurewei Technologies, Inc. System and method for user equipment mobility support in a heterogeneous network
CN102917392A (zh) * 2011-08-05 2013-02-06 华为技术有限公司 小区测量和测量控制的方法及设备
US9681369B2 (en) 2011-08-05 2017-06-13 Huawei Technologies Co., Ltd. Methods and devices for cell measurement and measurement control
EP2728939A4 (fr) * 2011-08-05 2014-05-21 Huawei Tech Co Ltd Mesure de cellule et procédé et dispositif de contrôle de mesure
EP2728939A1 (fr) * 2011-08-05 2014-05-07 Huawei Technologies Co., Ltd Mesure de cellule et procédé et dispositif de contrôle de mesure
CN102695228B (zh) * 2012-06-07 2014-09-24 中国科学技术大学 一种预切换的方法、网络系统及家庭基站
CN102695228A (zh) * 2012-06-07 2012-09-26 中国科学技术大学 一种预切换的方法、网络系统及家庭基站
CN104363620A (zh) * 2014-10-29 2015-02-18 中国联合网络通信集团有限公司 一种负荷分担方法及装置
CN104363620B (zh) * 2014-10-29 2018-03-30 中国联合网络通信集团有限公司 一种负荷分担方法及装置

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