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WO2011023234A1 - Procédé et appareil pour exploitation d'un réseau de communication - Google Patents

Procédé et appareil pour exploitation d'un réseau de communication Download PDF

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Publication number
WO2011023234A1
WO2011023234A1 PCT/EP2009/061091 EP2009061091W WO2011023234A1 WO 2011023234 A1 WO2011023234 A1 WO 2011023234A1 EP 2009061091 W EP2009061091 W EP 2009061091W WO 2011023234 A1 WO2011023234 A1 WO 2011023234A1
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WO
WIPO (PCT)
Prior art keywords
tracking area
pci
information
added
henb
Prior art date
Application number
PCT/EP2009/061091
Other languages
English (en)
Inventor
Shun Liang Zhang
Wei Hua Zhou
Yi Zhang
Jurgen Michel
Original Assignee
Nokia Siemens Networks Oy
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 Nokia Siemens Networks Oy filed Critical Nokia Siemens Networks Oy
Priority to PCT/EP2009/061091 priority Critical patent/WO2011023234A1/fr
Publication of WO2011023234A1 publication Critical patent/WO2011023234A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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 disclosure relates to the operation of communications networks, and has particular, but not exclusive, application to self-organising networks (SONs).
  • SONs self-organising networks
  • a communication system can be seen as a facility that enables communication sessions between two or more entities.
  • the communications may comprise, for example, communication of voice, electronic mail (email), text message, multimedia, other data and so on.
  • a communication system can be provided for example by means of a communication network and one or more compatible communication devices.
  • the communication network may be a local network.
  • a user can access a communication system by means of an appropriate communication device.
  • a communication device of a user is often referred to as user equipment (UE).
  • UE user equipment
  • a communication device is provided with an appropriate signal receiving and transmitting apparatus for enabling communications, for example enabling fixed or wireless access to a communication network or communications directly with other users.
  • Users may thus be offered and provided numerous services via their communication devices. Non-limiting examples of these services include two-way or multi-way calls, data communication or multimedia services or simply an access to a data communications network system, such as the Internet.
  • a user who has accessed a system may also be provided broadcast or multicast content. Non-limiting examples of the content include downloads, television and radio programs, videos, advertisements, various alerts and other information.
  • This disclosure has application to communication networks which typically comprise a plurality of base stations, or Node Bs, with which a UE can communicate with when located in a cell for which a base station has coverage. These are often under the control of a network controller. Alternatively the network of base station may not have central control (autonomous networks). Self Organising Networks reduce the operating expenditure associated with the management of large number of Macro base stations (eNB) or Femto base Stations (HeNB). Self-configuration functions of SON are especially important to Femto Base stations (HeNB). Typically, networks include assigning (allocating) Tracking Area information, such as Tracking Area Identity (TAI) to base stations. Such information may be used in tracking applications, for example to locate a UE. Traditionally, the tracking area for each base station (eNB) and/or each cell corresponding to one or more base stations (eNBs), is determined during an initial network planning phase and therefore preconfigured before operation.
  • TAI Tracking Area Identity
  • PCI physical cell identity
  • L identity is a configuration parameter of a radio cell; it corresponds to a unique combination of one orthogonal sequence and one pseudo-random sequence.
  • Phy_ID unique physical identities
  • networks such as SONs, which allow the addition of new base stations such as HeNBs, there is therefore a problem in assigning tracking and identity information to the newly introduced base stations.
  • Such base stations may also be transient/intermittent, in that they may be switched off also.
  • the added base stations are sometimes referred to as "Femto nodes" or HeNBs.
  • BS macro base station
  • a Femto Base Station is intended to provide coverage over small areas such as the home and small office, home office (SOHO) environment.
  • Embodiments of the invention provide an improved system where eNBs are introduced to networks, or those which are switched on and off over time.
  • a method of allocating a Physical Cell Identity (PCI) and/or Tracking Area (TA) parameters to an added access node comprising: operationally adding said access node to at least one existing network; determining said PCI and/or Tracking Area parameters based on one or more of the following: PCI information and/or Tracking Area parameters of neighbouring access nodes/cells; location information provided by the added access node; pre-stored network topology.
  • PCI Physical Cell Identity
  • TA Tracking Area
  • the PCI information and/or Tracking Area parameters of neighbouring nodes/cells may be received from one or more neighbouring access nodes of said added access node.
  • the received PCI information or Tracking Area information may pertain to one or more neighbouring access nodes/cells from a user equipment.
  • the network may be a Self Organising Network (SON), such as a centralised or localised SON.
  • SON Self Organising Network
  • the determining step may be performed by a centralised network functionality or by the added access node.
  • the method may include further using one or more of the following: Closed Subscriber Group (CSG) information of the added access node and/or at least one it its neighbouring access nodes/cells; access mode of the added access node and/or at least one of its neighbouring access nodes/cells.
  • CSG Closed Subscriber Group
  • the determining step may be based on pre-stored topology information and/or Tracking Area information/parameters and/or PCI of neighbouring access nodes/cells.
  • said newly allocated PCI and/or Tracking Area parameters information may be released.
  • Tracking Area parameters may include Tracking Area Identity and/or Tracking Area Code.
  • the added access node may be a Femto node, HeNB or "plug and play" node.
  • the PCI allocated to the added access node is preferably different from the PCI of any neighboring access node.
  • PCI information and /or Tracking Area parameters of said added access node/cell is stored and/or further used by one or more neighbouring access nodes or other network elements.
  • a computer program comprising program code means adapted to perform the steps of any of the methods when the program is run on a processor as well as a computer readable medium comprising such computer programs.
  • a network element having means to allocate a Physical Cell Identity (PCI) and/or Tracking Area (TA) parameters to an access node added to a network, comprising: means to determine said PCI and/or Tracking Area parameters based on one or more of the following: PCI information or Tracking Area parameters of neighbouring access nodes/cells; location information provided by the added access node; pre-stored network topology.
  • PCI Physical Cell Identity
  • TA Tracking Area
  • the network element may have means to receive said PCI information and/or Tracking Area parameters of neighbouring nodes/cells from one or more neighbouring access nodes of said added access node or means to receive PCI information or Tracking Area information pertaining to one or more neighbouring access nodes/cells of said added cell from a user equipment.
  • the network may be a Self Organising Network (SON) such as a centralised or localised SON.
  • SON Self Organising Network
  • the network element may be the added access node.
  • the means to determine may comprise means to further use any of the following: Closed Group Subscriber information of the added access node and/or at least one it its neighbouring access nodes/cells; access mode of the added access node and/or at least one of its neighbouring access nodes/cells.
  • the network element may include means to release said newly allocated PCI and/or Tracking Area parameters information if said added node is shut down.
  • the added access node is Femto node, HeNB or "plug and play” node.
  • the determining means may include means to use pre-stored topology information and Tracking Area parameters and/or PCI of neighbouring access nodes/cells.
  • a network element or processor therefor, having means to receive and/or forward Physical Cell Identity and/or Tracking Area parameters of access nodes/cells which neighbour an added access node.
  • the network element may be a neighbouring access node to said added access node, a user equipment, or the added access node.
  • a network element or processor therefore, having means to transmit location information, and means to receive Physical Cell Identity and/or Tracking Area parameters when operationally added to a network.
  • Figure 1 shows an example of a traditional fixed communication system.
  • Figure 2 shows an example of a communication device
  • Figure 3 shows an example of a controller for a base station (such as an eNB or HeNB);
  • Figure 4 show a schematic representation of a Self Organising Network in which embodiments of the invention may be implemented;
  • Figure 5 and 6 illustrate a registration and deregistration procedure for an access node according to two embodiments of the invention involving allocation of TAI information
  • Figures 7 and 8 illustrate a registration and deregistration procedure for an access node according to two embodiments of the invention involving allocation of PCI information
  • certain exemplifying embodiments are explained with reference to wireless or mobile communication systems serving mobile communication devices. Before explaining in detail the certain exemplifying embodiments, certain general principles of a wireless communication system and mobile communication devices are briefly explained with reference to Figures 1 and 2 to assist in understanding the technology underlying the described examples.
  • a communication device can be used for accessing various services and/or applications provided via a communication system.
  • Figure 1 shows a typical communication system 1 comprising a number of cells 2, each associated with particular fixed base stations 12.
  • suitable access nodes are a base station of a cellular system, for example what is known as NodeB or enhanced NodeB (eNB) in the vocabulary of the 3GPP specifications.
  • Other examples include base stations of systems that are based on technologies such as wireless local area network (WLAN) and/or WiMax (Worldwide Interoperability for Microwave Access).
  • the base stations may be in communication with a Network Controller (not shown).
  • a UE may be located at a particular location within a particular cell.
  • Each cell (and/or base station) has associated with it a general topological/geographical location, shown generally as encompassed by the broken lines in the figure. This is further associated /correlated with Tracking Area information and may include Tracking Area Identity and/or Tracking Area Code. Each base station and /or the cell(s) it is responsible for, may have an associated PCI.
  • the base stations may be connected to a wider communications network (not shown).
  • a gateway function may also be provided to connect to another network.
  • This further network may also be connected to a further access system, which serves user devices.
  • a communication device can be used for accessing various services and/or applications through the communication system.
  • a mobile communication device is typically provided wireless access via at least one base station 12 or similar wireless transmitter and/or receiver node of the access system.
  • a base station site can provide one or more cells of the plurality of cells of a cellular communication system.
  • the communication devices can access the communication system based on various access techniques, such as code division multiple access (CDMA), or wideband CDMA (WCDMA). The latter technique is used by communication systems based on the third Generation Partnership Project (3 GPP) specifications.
  • Other examples include time division multiple access (TDMA), frequency division multiple access (FDMA), space division multiple access (SDMA) and so on.
  • LTE long-term evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP 3rd Generation Partnership Project
  • OFDMA orthogonal frequency divisional multiple access
  • SC-FDMA SC-FDMA
  • FIG. 2 shows a schematic, partially sectioned view of a communication device 20 that can be used for communication with a communication system.
  • An appropriate mobile communication device may be provided by any device capable of sending and receiving radio signals. Non-limiting examples include a UE, a portable computer provided with a wireless interface card or other wireless interface facility, personal data assistant (PDA) provided with wireless communication capabilities, or any combinations of these or the like.
  • a mobile communication device may be used for voice and video calls, for accessing service applications and so on.
  • the mobile device may receive signals over an air interface 11 via appropriate apparatus for receiving and may transmit signals via appropriate apparatus for transmitting radio signals.
  • a transceiver is designated schematically by block 27.
  • the transceiver may be provided for example by means of a radio part and associated antenna arrangement.
  • the antenna arrangement may be arranged internally or externally to the mobile device.
  • a mobile device is also typically provided with at least one data processing entity 23, at least one memory 24 and other possible components 29 for use in software aided execution of tasks it is designed to perform, including control of access to and communications with access systems.
  • the data processing, storage and other relevant control apparatus can be provided on an appropriate circuit board and/or in chipsets. This feature is denoted by reference 26.
  • the controller may include functionality to carry out any embodiments of the invention.
  • the user may control the operation of the mobile device by means of a suitable user interface such as key pad 22, voice commands, touch sensitive screen or pad, combinations thereof or the like.
  • a display 25, a speaker and a microphone are also typically provided.
  • a mobile communication device may comprise appropriate connectors (either wired or wireless) to other devices and/or for connecting external accessories, for example hands-free equipment, thereto.
  • FIG. 3 shows an example of a control apparatus 30 for a base station.
  • the control apparatus 30 can be arranged to provide control on communications by roaming mobile communication devices according to embodiments of the invention.
  • the control apparatus 30 may be configured to implement any of the embodiments of the invention.
  • the control apparatus may for example initiate messages and signals to inform other base stations that it is switched on/to be switched off. It may for example be adapted to receive, send or store such information as Tracking Area information or PCI information of its (or neighbouring base stations) to/from other neighbouring base stations and/or user equipment.
  • the control apparatus 30 can be configured to execute an appropriate software code to provide the control functions as explained below in more detail.
  • the control apparatus comprises at least one memory 31, at least one data processing unit 32, 33 and an input/output interface 34.
  • control apparatus Via the interface the control apparatus can be coupled to a receiver and a transmitter of the system, for example a base station antenna, so that it can receive/transmit a transmission from/to the communication device. Control on communications by the communication device can then be based on this determination.
  • a receiver and a transmitter of the system for example a base station antenna
  • Figure 4 illustrates a Self Organised Network. It shows a portion of a SON 40 showing four base stations 41a, 41b, 41c which are eNBs. Each cell 42 is associated with respective base stations and corresponding and corresponds generally to designated areas 43a, 43b, 43c, which may have associated with them a Tracking Area Code and/or Identity. Each base station may also have one or more Physical Cell Identifiers associated with the base station and/or its respective cell(s).
  • a new access node, a HeNB 44 is introduced. This may be a Femto node. This will initialise and start to communicate with neighbouring eNBs. In operation it will communicate with a UE in its vicinity.
  • a Femto base station Compared with macro base stations, a Femto base station (HeNB) provides coverage over small areas such as the "small office, home office” (SOHO) environment. Femto cell BS may be end user installed without service provider manual configuration (plug and play). There are potentially a large number of Femto base stations which may be present in a radio access networks. As well as the closed access mode specified in 3GPP Rel8.0., there are three access modes for HeNBs in 3GPP Rel-9.
  • CSG Closed Subscriber Group
  • Hybrid access mode where an HeNB operates as a CSG cell where at the same time, non-CSG members are allowed access
  • open access mode where the HeNB operates as a normal cell, i.e. non-CSG cell.
  • a Mobile Management Entity (MME) located in Evolved Packet Core (EPC) of 3GPP networks can determine the UE' s position based on a Tracking Area Level. When a UE has to be paged, this will be done in the full tracking area.
  • a Tracking Area may be identified by one TAI, and one TAI may be assigned to several cells of different base stations.
  • the MME provides a list of TAI to a UE, so when paging a UE, all base stations related with any TAI in the TAI list are used to page the UE.
  • tracking areas may be identified by a Tracking Area Identity (TAI), which consists of a tracking area code (TAC), mobile network code (MNC) and mobile country code (MCC).
  • TAI Tracking Area Identity
  • MNC mobile network code
  • MCC mobile country code
  • TAU Tracking Area Update
  • the UE is required to maintain a list of TAI (for usually several base stations in the network). It is the task of the MME to manage the TAI list of UE.
  • the MME sends the TAI list information to the UE, both MME and UE store the TAI list information, with the movement of the UE, the MME may determine a new TAI list to the UE, and the UE need to update the stored TAI list.
  • the MME In idle mode, the MME initiates a paging procedure by sending a paging message to each eNB with cells belonging to the tracking area(s) in which the UE is registered. The MME then knows in Tracking Area level where an idle mode UE is located. Each eNB can contain cells belonging to different tracking areas, whereas each cell can only belong to one TA.
  • SON can be realised by centralised SON architecture, distributed architecture, or hybrid architecture.
  • the SON function can be provided by the existing network management system or in an additional standalone centralized SON function or server.
  • the allocation of TAI information to a new access node may be performed during the registration process according to one embodiment as follows.
  • a new access node e.g. a HeNB is powered on or initialised, it registers with one or more networks, such as with a SON network. It then receives (detects) any TAI information broadcasted from surrounding access nodes (for example from surrounding eNBs/HeNBs). This information may then be sent to a centralised SON functionality in an Operation Administration Maintenance (OAM) system i.e. in an HeNB management system for tracking area optimisation.
  • OAM Operation Administration Maintenance
  • a tracking area optimisation process may be performed. This may be done by the centralized SON functionality i.e. by the management system or distributed SON architecture. While in distributed SON, the TAI optimisation may be done by the added or even neighbouring eNBs.
  • the optimisation step essentially assigns the most appropriate TA information (e.g. TAI) dependent on various factors, such as any of the following: the location information of the added (new) eNB, TAI information of its neighbouring eNBs, CSG ID of the new eNB and/or its neighbouring eNBs, access mode of the new eNB and/or its neighbouring eNB(s).
  • the centralized SON functionality in OAM system allocates one or more TAI or TAC to the added eNB.
  • TAC may thus be assigned to the new registered HeNB during the registration process through the interface between HeNB and the He Management System (HeMS).
  • HeMS He Management System
  • the allocated TAI may be unique or may be shared, e.g. with other neighbouring access nodes (e.g. neighbouring HeNBs).
  • the newly added eNB may also or instead, send information on its own location to the centralised SON functionality.
  • the new HeNB may need to know its location, and report its location information to the centralised SON functionality.
  • the location can be determined by for example GPS function of the HeNB, or the IP address of the associated DSL modem, or detected BS ID, Cell ID.
  • the TAI of the surrounding neighbour eNB/HeNB(s) may be stored on the central SON functionality and used with location information of the newly added eNB also.
  • Information of neighbouring access nodes may be stored as an additional parameter or sub-parameter of the existing neighbour list parameter; or as a new parameter of the information model for the interface between the HeNB and centralized SON functionality i.e. HeMS.
  • the centralized SON may also acquire the CSG ID, CSG access mode information of neighbouring eNBs in a similar fashion by reporting from the added HeNB or interacting with the Network Management System.
  • the other HeNBs may have already registered to HeMS before the new registering HeNB.
  • the TAI or TAC may be a new Core Network Related parameter of the information model defined for the interface between the HeNB and centralized SON functionality.
  • a deregistering process may follow where the centralised SON functionality in OAM system frees the TAI or TAC allocated to the HeNB so that the TAI or TAC can be re-allocated.
  • the optimisation process may be repeated to re-allocate any new TAI or TAC to the new eNB (new HeNB).
  • the HeMS provides the new assigned TAI(s) or TAC(s) through the interface and the HeNB overwrites the old TAI(s) or TAC(s) with new assigned TAI(s) or TAC(s).
  • the allocated TA information/parameters may depend on access mode also.
  • the TAI information and any possible topology information of eNB(s) may be statistically configured on centralised SON functionality or learned by an OAM system. In certain networks, all the Node B or eNode B will support SON functionality though this may not be the case in future networks. If neighbouring base stations do not support SON, their configuration parameters are determined during network planning and pre-configured on the base station instead of provided by the centralized SON functionality.
  • the skilled person would understand that the Tracking Area optimisation process may be performed in several different ways. The optimisation process may be quite simple.
  • the added eNB with the same CSG ID as its neighbouring eNB may be assigned share the same TAI(s) as one or more of its neighbours.
  • the added eNB with open access mode may share the same TAI with neighboured Macro eNB or HeNB with open access mode.
  • an added eNB with closed access mode and CSG ID is not same as its neighbour eNB, it may be allocated with a unique TAI (free TAI not used by its neighbour HeNB).
  • the SON functionality/optimisation is provided at the network level; optimisation algorithm(s) may reside in one or more network elements (such as eNB/HeNB).
  • the SON functionality in an added access node (HeNB) may detect the TAI (or PCI) information, and possibly also CSG ID, CSG access mode information broadcast from surrounding eNB/HeNBs and can then send a request message to require the UE to report TAI/PCI info, CSG ID, CSG access mode information of other neighbouring HeNB/eNB(s) if the access node (e.g HeNB) can't detect directly.
  • a UE may report the heard TAI/PCI info, CSG ID, CSG access mode info of related eNBs to the HeNB upon receiving the request message from the HeNB.
  • the SON functionality Based on the related TAI (or PCI) information as well as any CSG ID, CSG, and/or access mode information collected directly or from UE, the SON functionality makes local TA or PCI optimisation and selects one or more appropriate TAI (or PCI) for its own cells.
  • the TAI/PCI can be same or different with its surrounding eNB/HeNB.
  • the SON function is provided partly at the network level and partly in the management system.
  • TAI information may be received from neighbouring eNBs.
  • other information such as CSG ID, CSG access mode information may be received from surrounding eNB/HeNBs also.
  • SON functionality in the newly added enB e.g. HeNB
  • a UE reports detected TAI information, (and perhaps also CSG ID, CSG access mode info) of neighbouring or related eNBs to the added eNB, upon receiving the request message from the added eNB.
  • the newly added node Based on the received TAI information (and perhaps CSG ID info, CSG access mode information) collected directly or from an UE, the newly added node performs a local TA optimisation as before and selects one or more appropriate TAI for its own cells.
  • the TAI can be same or different with its surrounding eNB/HeNB. In this system there is no Network
  • eNB/HeNB locally performed TAI/PCI optimization approach is an alternative approach of centralised SON architecture. In the distributed approach, there is no
  • the optimisation process may be carried out by the Network Management System of a centralised network or by the added access node (e.g. the added HeNB).
  • the optimization process could be done by an eNB/HeNB localized SON functionality through collecting PCI/TAI info broadcasted by surrounding base station directly or by a UE.
  • the localized SON functionality on HeNB completes TAI/PCI optimisation and selects appropriate TAI/PCI for itself.
  • the same techniques may also be used by SON for 3GPP macro cell (i.e. eNB) also.
  • the proposed process can be used for potential CGI assignment.
  • TR-069 protocol between HeNB and the centralized SON functionality in an OAM system described in the following procedures may be an implementation example for 3GPP HeNB. While for 3GPP eNB, vendor proprietary or other open protocols can be used between eNB and centralized SON functionality in OAM system.
  • Figures 5 and 6 illustrate the working of example embodiments of the invention and show a registration and deregistration procedure respectively according to embodiments of the invention when applied to centralised SON architecture.
  • the HeNB detects information from neighbouring eNBs such as Location Area information/parameters.
  • the HeNB sends a TR-069 Inform request message to a HeMS (this is the HeNB management system). According to 3GPP spec for HeNB, it is this HeMS responsible for related SON functionality realisation.
  • the message may include the location information and BS ID parameters. Detected TAI(s) information of neighbouring HeNB may also be reported to HeMS.
  • the HeMS determines the potential neighbouring HeNB(s) for the new registered HeNB based on the location info of the HeNB. It may also determine this from known network topology information which may be used in addition or alternatively. Then the HeMS performs tracking area optimisation based on the determined neighbour relation, and TAI(s) assigned to the neighbouring HeNB.
  • Additional info such as, CSG ID, access mode of the new registered HeNB and the related neighbor HeNB may also be used for the optimisation process.
  • the HeMS allocates one or more TAI(s) to the new registered HeNB.
  • the eNB related info such as location info, assigned TAI information
  • network topology info about the eNB can be statically configured on the HeMS or provided by OAM system.
  • the HeMS provides the allocated TAI to the HeNB, and may forward also appropriate information on the neighbouring NBs (e.g. the neighbour info list).
  • the TAI assigned to the HeNB may be introduced as new parameters of standard protocol message such as Set parameter Values.
  • the HeNB knows the potential neighbouring HeNB(s) based on the informed neighbour HeNB info list, and it stores the neighbour HeNB related info for later use.
  • step 55 based on the potential neighbour HeNB selected before, the HeMS sends a TR-069 message (Set Parameter Values) to each neighbour HeNB to inform them of the addition of the newly registered HeNB and its related info (BS ID, CSG ID, CSG access mode).
  • the neighbour HeNB knows the new registered neighbour HeNB upon receiving the TR-069 message, then it updates local maintained neighbour HeNB info list by adding the new advertised HeNB info.
  • the neighbouring HeNB replies the HeMS by a message (Set Parameter Values Response) to confirm the receipt neighbour relation info.
  • step 58 the HeMS updates the local maintained topology and neighbour relation info by adding the new HeNB and its related info (BS type, CSG access mode, CSG ID/name, TAI).
  • Figure 6 shows a deregistration procedure which includes one embodiment of the invention; the following procedure takes place.
  • step 61 in case a HeNB is shutdown or deregistered from the network, the HeMS detects the event, and triggers the network topology update process.
  • the HeMS can detect the deregistration of the HeNB by possible deregistration message from the HeNB, or by interaction network management system.
  • step 62 the HeMS releases the TAI assigned to the HeNB so that the free TAI can be re-allocated later.
  • the HeMS determines the HeNB neighbouring of the shut down HeNB.
  • step 63 The HeMS sends a message (Set Parameter Values message) to the neighbouring HeNB(s) to inform them of the shut-down HeNB.
  • the neighbouring (H)eNB know of the shut-downHeNB from the received message, then it updates local maintained neighbour HeNB list by deleting the HeNB and the related TAI information.
  • the neighbouring HeNB(s) reply to the HeMS by a message (Set Parameter Values Response).
  • the HeMS updates the local maintained topology information by deleting the HeNB related info (CSG access mode, CSG ID/name, TAI, neighbor relation information), and removes the HeNB from the neighbour list information of neighbouring HeNB(s).
  • the advantages of the embodiments of the invention are that tracking area issue of 3GPP Femto networks can be resolved in an efficient manner. With the optimised tracking areas, the paging efficiency can be improved, and the paging signaling overhead can be decreased and keeps the TAU signaling overhead low at the same time.
  • the approach is aligned with the SON architecture defined by 3GPP and easy to implement. The approach greatly decreases the load of manual network element configuration, which is especially for dynamic networks with large number of Femto cell BS.
  • the approach can be used for various Femto networks, such as 3GPP/3GPP2 based Femto networks, WiMAX based Femto networks.
  • PCI cell/node ID parameters
  • base stations base stations
  • PCI' s Physical cell ID's
  • the reuse of the PCI's in different cells in one radio access network is unavoidable where there are a large number of (added) base stations such as Femto nodes.
  • the PCI (often referred alternatively as Phy_ID) is determined in an initial network planning stage; in initial configuration.
  • PCI is to be interpreted broadly as any identity an access node, or a cell under its coverage, is associated with.
  • a Neighbour cell Relation in the context of ANR (Automatic Neighbour Relation) is defined as an existing Neighbour Relation from a serving cell to a target cell. (For example, when a UE move from the coverage of cell A to the coverage of cell B, then the cell A is the serving cell, and cell B is the target cell).
  • the eNB controlling the source cell knows the ECGI/CGI (ECGI: E-UTRAN Cell Global Identifier; CGI: UTRAN Cell Global Identifier) and PCI of the target cell. For example it may have an entry in a Neighbour Relation Table for the source cell identifying the target cell; and has the attributes in this Neighbour Relation Table entry defined, either by O&M or set to default values.
  • ECGI/CGI E-UTRAN Cell Global Identifier
  • CGI UTRAN Cell Global Identifier
  • PCI Physical cell ID
  • X2 Physical cell ID
  • certain embodiments of the invention also provides an improved method to allocate Physical Cell ID to newly added access nodes and or the cells they are responsible for.
  • the following describes one embodiment of the invention where Physical Cell ID (PCI) is assigned to a newly added HeNB.
  • PCI Physical Cell ID
  • the HeMS determines (e.g. formulates) a list of any neighbouring base stations (eNBs or HeNBs) based on the location information of the newly registered HeNB, local maintained network topology information, or location information provided by an added eNB. For example the HeNB may determine its location by GPS as an alternative to detecting the surrounding neighbouring base station information (BS ID, CGI, etc), and report the location info to the HeMS.
  • a new base station e.g. HeNB
  • the HeMS determines (e.g. formulates) a list of any neighbouring base stations (eNBs or HeNBs) based on the location information of the newly registered HeNB, local maintained network topology information, or location information provided by an added eNB.
  • the HeNB may determine its location by GPS as an alternative to detecting the surrounding neighbouring base station information (BS ID, CGI, etc), and report the location info to the HeMS.
  • the HeMS then allocates one or more free Physical cell ID(s) (not used by its neighbouring base stations) to the newly added base station (HeNB) based on the determined the neighbour relation and/or PCI(s) assigned to its neighbouring base stations (e.g. neighbouring HeNBs).
  • the HeMS may provide the allocated Physical cell ID(s) to the HeNB during the registration process.
  • the PCI which are already assigned to the neighbouring base stations (e.g. neighbouring HeNBs) may also be provided to the newly registered HeNB for supplementary information purposes. This may be by way of a message through the interface (Type 1 interface) between HeNB and HeMS.
  • the PCI may be set up as new Access Network Related parameter of the information model defined for the interface (Type 1 interface) between HeNB and HeMS.
  • the PCI information of neighbouring base stations may be set up as a new parameter such as sub-parameter of existing neighbour list parameters of the information model for the interface.
  • the HeMS removes the added eNB from topology and neighbour relation information and frees the PCI allocated to the shut down (He)NB so that the free PCI can be re-allocated later.
  • the eNB doesn't supported SON function
  • the Physical cell ID used for the eNB and possible topology info of eNB can be statically configured on HeMS or provided to HeMS through O&M system.
  • the HeMS can adjust or re-allocate the assigned PCI to a HeNB due to neighbour relation change between related HeNB, and the new assigned PCI is provided to the related HeNB by the interface (Type 1 interface) between HeNB and HeMS.
  • Figures 7 and 8 illustrate the working of embodiments of the invention and show a registration and deregistration procedure respectively according to embodiments of the invention applicable to Centralised Networks.
  • an HeNB detects radio parameter info (such as, PCI, PSC, SSC etc.) broadcasted from one or more neighbouring eNB/HeNBs.
  • radio parameter info such as, PCI, PSC, SSC etc.
  • the HeNB sends a TR-069 Inform request message from HeMS.
  • Various information is sent to the HeMS and this information may include information relating to neighbouring bases station (e.g. cell ID info.), and any appropriate the radio parameter info (such as PCI, PSC, SSC etc) detected by the HeNB.
  • neighbouring bases station e.g. cell ID info.
  • radio parameter info such as PCI, PSC, SSC etc
  • the HeMS determines the potential neighbouring HeNBs for the new the registered HeNB based on the location info of the HeNB, and/or known network topology info.
  • the HeNB reports it heard macro BS info e.g. BS 1).
  • the HeMS based on the known topology information, BS 2 is not far from the HeNB, though the HeNB can't hear directly. So, the HeMS may provide a neighbour list including BSl, BS2.
  • the HeMS allocates one or more free PCI (not used its neighbour HeNB) based on this.
  • the eNB related info (such as location info, assigned PCI info) can be statically configured on the HeMS or provided by O&M system.
  • the HeMS may need to have a broader system network topology and radio parameters setting view of a specific local area (here, it is the location where the new HeNB installed) in order to make some optimised parameter settings for the new HeNB.
  • the centralized SON should know the parameter setting status of the surrounding eNB. If the surrounding eNB doesn't support SON, then the SON functionality doesn't know this information by itself. As an alternative, one way is to statically configure this information to the SON; another way is learn through OAM system.
  • the HeMS provides the allocated PCI and the related neighbour info list to the HeNB.
  • Information regarding the PCI assigned to each neighbouring eNB may also be sent as new parameters to the newly added base station (HeNB).
  • step 74 the HeNB knows the PCI assigned to itself, and the PCI used by its neighbour HeNB.
  • step 75 based on the potential neighbour base stations determined beforehand, the HeMS sends a TR-069 message (Set Parameter Values) to each neighbour HeNB to inform the appearing of the new registered HeNB and its related info (BS ID, CSG ID, CSG access mode, PCI).
  • TR-069 message Set Parameter Values
  • neighbour HeNB knows the new registered neighbour HeNB and the PCI assigned to the HeNB upon receiving the TR-069 message, then it updates local maintained neighbour HeNB info list by adding the new HeNB and its related PCI info.
  • step 77 the neighbour HeNB replies the HeMS by a message (Set Parameter Values Response) to confirm the receipt neighbour relation info.
  • step 78 the HeMS updates the local maintained topology and neighbour relation info by adding the new HeNB and its related capability info (BS type, CSG type, CSG ID/name, PCI).
  • FIG 8 shows one embodiment where a base station (eNB or HeNB) is deregistered.
  • the HeMS detects the event, and triggers the network topology update process.
  • the HeMS releases the PCI assigned to the HeNB so that the free PCI can be re-allocated later.
  • the HeMS selects neighboring base stations (e.g. HeNBs) of the shut down HeNB.
  • the HeMS sends a message (Set Parameter Values message) to the neighbouring base stations (HeNBs) to inform them that the base station has been shut down.
  • step 84 the neighbouring base stations know which HeNB has been shut down, then it updates local maintained neighbour (H)eNB list by deleting the HeNB and the related PCI info.
  • step 85 the neighbour HeNB replies the HeMS by a message (Set Parameter Values Response).
  • step 86 the HeMS updates the local maintained topology info by deleting the HeNB related info (CSG access mode, CSG ID/name, PCI, neighbour relation info), and removes the HeNB from the neighbour list info of the HeNB neighboring with the disappeared HeNB.
  • CSG access mode CSG ID/name, PCI, neighbour relation info
  • embodiments fulfill the conditions mentioned by 3GPP TR36.902 because the HeMS has full knowledge about the PCI utilization of related neighbour BS, PCI collision and confusion can be avoided. It solves Physical cell ID collision issues of Femto networks with large number of plug &play HeNB. Additionally, it solves the PCI info exchange issues between neighbouring HeNB. It greatly decreases the load of manual network element configuration, which is especially for dynamic networks with large number of Femto cell BS. It may be used for various Femto networks, such as 3GPP/3GPP2 based Femto networks, WiMAX based Femto networks.
  • TR-069 protocol between HeNB and the centralized SON functionality in OAM system i.e. HeMS for HeNB
  • 3GPP HeNB vendor proprietary or other open protocols can be used between eNB and centralized SON functionality in OAM system.
  • TAI parameters or a PCI may be determined.
  • PCI allocation the objective is to avoid confusion between neighbouring access nodes/cells.
  • a new access node e.g. (new HeNB) is preferably therefore allocated a unique PCI among its neighboring eNB/HeNB locations.
  • TAI For TAI; it may be preferable to share parameters, so as to save TAU updates signaling overhead whilst keep paging overhead as small as possible. So, a new HeNB may be allocated with the same or different TAI with its neighboring eNB/HeNB.
  • the above described functions can be provided by means of appropriate software and data processing apparatus. Functions may be incorporated into any appropriate network element or management system and may be provided by means of one or more data processors.
  • the data processor may be provided by means of, for example, at least one chip.
  • Appropriate data processing may be provided in a processing unit provided in association with a communication device, for example a mobile station. The data processing may be distributed across several data processing modules.
  • the above described functions may be provided by separate processors or by an integrated processor.
  • An appropriately adapted computer program code product or products may be used for implementing the embodiments, when loaded on an appropriate data processing apparatus.
  • the program code product for providing the operation may be stored on and provided by means of an appropriate carrier medium.
  • An appropriate computer program can be embodied on a computer readable record medium. A possibility is to download the program code product to a communication device via a data network.

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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 d'affectation de paramètres d'identité de cellule physique (PCI) et/ou de zone de suivi (TA) à un nœud d'accès ajouté, comprenant : l'ajout opérationnel dudit nœud d'accès à au moins un réseau existant et la détermination desdits paramètres PCI et/ou de zone de suivi sur la base d'un ou plusieurs des éléments suivants : paramètres d'informations PCI et/ou de zone suivi de nœuds d'accès/cellules voisins, informations de localisation fournies par le nœud d'accès voisin, topologie de réseau pré-mémorisée.
PCT/EP2009/061091 2009-08-27 2009-08-27 Procédé et appareil pour exploitation d'un réseau de communication WO2011023234A1 (fr)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102781008A (zh) * 2012-07-10 2012-11-14 电信科学技术研究院 一种进行pci选择的方法及装置
WO2012163592A1 (fr) * 2011-05-30 2012-12-06 Nokia Siemens Networks Oy Évaluation d'une cellule dans un réseau de communications
EP2568749A1 (fr) * 2011-09-06 2013-03-13 Alcatel Lucent Procédé pour la fourniture de communication dans un réseau de communication mobile
EP2605589A1 (fr) * 2011-12-12 2013-06-19 Samsung Electronics Co., Ltd Procédé pour l'élimination des collisions des identificateurs physique de cellules PCI de stations de base pico dans la zone d'une station de base macro d'un système de communications mobiles
WO2013103311A1 (fr) * 2012-01-03 2013-07-11 Telefonaktiebolaget L M Ericsson (Publ) Procédé et station fixe radio pour attribuer l'indicatif de zone de station fixe
WO2013082627A3 (fr) * 2011-12-02 2013-07-18 Qualcomm Incorporated Procédés et appareils de sélection améliorée d'identificateur de zone de recherche de mobile dans des réseaux sans fil contenant des stations de base basse puissance
WO2013113623A1 (fr) * 2012-01-30 2013-08-08 Nokia Siemens Networks Oy Attribution d'identificateurs pour des nœuds b domestiques
WO2013120725A1 (fr) * 2012-02-16 2013-08-22 Nokia Siemens Networks Oy Gestion de pci respectueuse de l'environnement
KR101486520B1 (ko) * 2011-07-22 2015-01-27 주식회사 케이티 이동통신 시스템에서 펨토셀 위치 식별 정보 자동 설정 방법 및 시스템, 이를 위한 펨토 ａｐ 장치
KR101535816B1 (ko) * 2014-01-08 2015-07-10 에스케이텔레콤 주식회사 페이징식별정보지정장치 및 페이징식별정보지정장치의 동작 방법
WO2015160792A1 (fr) * 2014-04-17 2015-10-22 Qualcomm Incorporated Auto-configuration d'une identité de cellule physique (pci) au niveau d'une cellule
US9408081B1 (en) 2014-04-29 2016-08-02 Sprint Spectrum L.P. Assigning wireless coverage area identifiers based on tracking area groups
RU2596799C2 (ru) * 2012-03-16 2016-09-10 Интел Корпорейшн Способ и устройство для координации функции самостоятельной оптимизации в беспроводной сети
CN106921984A (zh) * 2015-12-25 2017-07-04 亿阳信通股份有限公司 一种lte中ta优化分析方法和装置
US9826436B2 (en) 2014-09-29 2017-11-21 At&T Intellectual Property I, L.P. Facilitation of mobility management across various radio technologies
EP3231223A4 (fr) * 2014-12-08 2018-06-20 Telefonaktiebolaget LM Ericsson (publ) Procédé pour faciliter l'identification d'un réseau, noeud d'accès, procédé d'identification de réseau et équipement utilisateur
CN109906641A (zh) * 2016-09-01 2019-06-18 华为技术有限公司 为基站配置参数的方法
CN111083711A (zh) * 2020-01-16 2020-04-28 杭州东信网络技术有限公司 一种基于智能评分算法的5g开站核心参数自动规划方法
EP3905756A4 (fr) * 2019-01-22 2022-04-06 Huawei Technologies Co., Ltd. Procédé de configuration de réseau et appareil de communication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070097939A1 (en) * 2005-10-04 2007-05-03 Telefonaktiebolaget Lm Ericsson (Publ) Automatic configuration of pico radio base station
WO2009045007A1 (fr) * 2007-09-29 2009-04-09 Samsung Electronics Co., Ltd Procédé pour établir une connexion par un noeud domestique b
WO2009067454A1 (fr) * 2007-11-19 2009-05-28 Qualcomm Incorporated Configuration d'un point d'accès d'une femtocellule
EP2079258A1 (fr) * 2008-01-11 2009-07-15 Lucent Technologies Inc. Affectation automatique de codes régionaux pour le déploiement femtocell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070097939A1 (en) * 2005-10-04 2007-05-03 Telefonaktiebolaget Lm Ericsson (Publ) Automatic configuration of pico radio base station
WO2009045007A1 (fr) * 2007-09-29 2009-04-09 Samsung Electronics Co., Ltd Procédé pour établir une connexion par un noeud domestique b
WO2009067454A1 (fr) * 2007-11-19 2009-05-28 Qualcomm Incorporated Configuration d'un point d'accès d'une femtocellule
EP2079258A1 (fr) * 2008-01-11 2009-07-15 Lucent Technologies Inc. Affectation automatique de codes régionaux pour le déploiement femtocell

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
3GPP: "3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Home (e)NodeB;Network aspects(Release 8)", 3GPP DRAFT; R3-083410_R3.020_V092_CLEAN_V2, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Prague, Czech Republic; 20081117, 17 November 2008 (2008-11-17), XP050324621 *
SAMSUNG: "Use of tracking area and cell identity for private networks/home cells", 3GPP DRAFT; R2-072623 DISCUSSION ON TA AND CELL IDENTITY, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Orlando, USA; 20070622, 22 June 2007 (2007-06-22), XP050135425 *

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012163592A1 (fr) * 2011-05-30 2012-12-06 Nokia Siemens Networks Oy Évaluation d'une cellule dans un réseau de communications
KR101486520B1 (ko) * 2011-07-22 2015-01-27 주식회사 케이티 이동통신 시스템에서 펨토셀 위치 식별 정보 자동 설정 방법 및 시스템, 이를 위한 펨토 ａｐ 장치
US9326225B2 (en) 2011-09-06 2016-04-26 Alcatel Lucent Method of providing communication over a mobile communication network
CN103797859A (zh) * 2011-09-06 2014-05-14 阿尔卡特朗讯 在移动通信网络上提供通信的方法
WO2013034363A1 (fr) * 2011-09-06 2013-03-14 Alcatel Lucent Procédé pour permettre une communication sur un réseau de communication mobile
EP2568749A1 (fr) * 2011-09-06 2013-03-13 Alcatel Lucent Procédé pour la fourniture de communication dans un réseau de communication mobile
US9320013B2 (en) 2011-12-02 2016-04-19 Qualcomm Incorporation Methods and apparatuses for improved paging area identifier selection in wireless networks containing low power base stations
WO2013082627A3 (fr) * 2011-12-02 2013-07-18 Qualcomm Incorporated Procédés et appareils de sélection améliorée d'identificateur de zone de recherche de mobile dans des réseaux sans fil contenant des stations de base basse puissance
US9295030B2 (en) 2011-12-02 2016-03-22 Qualcomm Incorporated Methods and apparatuses for improved paging area identifier selection in wireless networks containing low power base stations
US8954079B2 (en) 2011-12-12 2015-02-10 Samsung Electronics Co., Ltd. Mobile communication system and base station identifier management method thereof
EP2605589A1 (fr) * 2011-12-12 2013-06-19 Samsung Electronics Co., Ltd Procédé pour l'élimination des collisions des identificateurs physique de cellules PCI de stations de base pico dans la zone d'une station de base macro d'un système de communications mobiles
WO2013103311A1 (fr) * 2012-01-03 2013-07-11 Telefonaktiebolaget L M Ericsson (Publ) Procédé et station fixe radio pour attribuer l'indicatif de zone de station fixe
US9467874B2 (en) 2012-01-30 2016-10-11 Nokia Solutions And Networks Oy Allocation of identifiers for home node Bs
WO2013113623A1 (fr) * 2012-01-30 2013-08-08 Nokia Siemens Networks Oy Attribution d'identificateurs pour des nœuds b domestiques
WO2013120725A1 (fr) * 2012-02-16 2013-08-22 Nokia Siemens Networks Oy Gestion de pci respectueuse de l'environnement
US9007935B2 (en) 2012-02-16 2015-04-14 Nokia Solutions And Networks Oy Environmental aware PCI management
RU2690505C1 (ru) * 2012-03-16 2019-06-04 Интел Корпорейшн Способ и устройство для координации функции самостоятельной оптимизации в беспроводной сети
RU2656149C2 (ru) * 2012-03-16 2018-05-31 Интел Корпорейшн Способ и устройство для координации функции самостоятельной оптимизации в беспроводной сети
RU2596799C2 (ru) * 2012-03-16 2016-09-10 Интел Корпорейшн Способ и устройство для координации функции самостоятельной оптимизации в беспроводной сети
CN102781008B (zh) * 2012-07-10 2016-04-13 电信科学技术研究院 一种进行pci选择的方法及装置
CN102781008A (zh) * 2012-07-10 2012-11-14 电信科学技术研究院 一种进行pci选择的方法及装置
KR101535816B1 (ko) * 2014-01-08 2015-07-10 에스케이텔레콤 주식회사 페이징식별정보지정장치 및 페이징식별정보지정장치의 동작 방법
US9332446B2 (en) 2014-04-17 2016-05-03 Qualcomm Incorporated Self-configuration of a physical cell identity (PCI) at a cell
WO2015160792A1 (fr) * 2014-04-17 2015-10-22 Qualcomm Incorporated Auto-configuration d'une identité de cellule physique (pci) au niveau d'une cellule
US9408081B1 (en) 2014-04-29 2016-08-02 Sprint Spectrum L.P. Assigning wireless coverage area identifiers based on tracking area groups
US9826436B2 (en) 2014-09-29 2017-11-21 At&T Intellectual Property I, L.P. Facilitation of mobility management across various radio technologies
US10136363B2 (en) 2014-09-29 2018-11-20 At&T Intellectual Property I, L.P. Facilitation of mobility management across various radio technologies
EP3231223A4 (fr) * 2014-12-08 2018-06-20 Telefonaktiebolaget LM Ericsson (publ) Procédé pour faciliter l'identification d'un réseau, noeud d'accès, procédé d'identification de réseau et équipement utilisateur
US10299194B2 (en) 2014-12-08 2019-05-21 Telefonaktiebolaget Lm Ericsson Method for facilitating network identification, access node, method for network identification and user equipment
US11071046B2 (en) 2014-12-08 2021-07-20 Telefonaktiebolaget Lm Ericsson (Publ) Method for facilitating network identification, access node, method for network identification and user equipment
CN106921984A (zh) * 2015-12-25 2017-07-04 亿阳信通股份有限公司 一种lte中ta优化分析方法和装置
CN106921984B (zh) * 2015-12-25 2021-04-16 亿阳信通股份有限公司 一种lte中ta优化分析方法和装置
CN109906641A (zh) * 2016-09-01 2019-06-18 华为技术有限公司 为基站配置参数的方法
EP3504911A4 (fr) * 2016-09-01 2019-07-24 Huawei Technologies Co., Ltd. Procédé de configuration de paramètres pour une station de base
US10812966B2 (en) 2016-09-01 2020-10-20 Huawei Technologies Co., Ltd. Method of configuring parameters for a base station
EP3905756A4 (fr) * 2019-01-22 2022-04-06 Huawei Technologies Co., Ltd. Procédé de configuration de réseau et appareil de communication
CN111083711A (zh) * 2020-01-16 2020-04-28 杭州东信网络技术有限公司 一种基于智能评分算法的5g开站核心参数自动规划方法
CN111083711B (zh) * 2020-01-16 2022-06-28 杭州东信网络技术有限公司 一种基于智能评分算法的5g开站核心参数自动规划方法

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