CN101278581A - Automatic building of neighbor lists in mobile system - Google Patents

Automatic building of neighbor lists in mobile system Download PDF

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Publication number
CN101278581A
CN101278581A CNA2006800366914A CN200680036691A CN101278581A CN 101278581 A CN101278581 A CN 101278581A CN A2006800366914 A CNA2006800366914 A CN A2006800366914A CN 200680036691 A CN200680036691 A CN 200680036691A CN 101278581 A CN101278581 A CN 101278581A
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CN
China
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described
data structure
radio base
micro
base stations
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CNA2006800366914A
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Chinese (zh)
Inventor
J·维克伯格
T·奈兰德
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艾利森电话股份有限公司
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Priority to US72298205P priority Critical
Priority to US60/722,983 priority
Priority to US60/722,982 priority
Priority to US60/722,984 priority
Priority to US60/723,946 priority
Priority to US60/728,780 priority
Priority to US60/731,495 priority
Application filed by 艾利森电话股份有限公司 filed Critical 艾利森电话股份有限公司
Publication of CN101278581A publication Critical patent/CN101278581A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/045Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

In a radio access network ( 24 ) a femto radio base station ( 28 f) comprises a resident receiver ( 54 ) which acquires system information broadcast in a radio access network ( 24 ). At least part of the system information is used for building, at the femto radio base station ( 28 f), a neighbor data structure ( 59 ) comprising information for neighboring cells. The neighbor data structure ( 59 ) is then used for building a neighbor list. The neighbor list is subsequently transmitted from the femto radio base station ( 28 f) to a user equipment unit ( 30 ) served by the femto radio base station ( 28 f). In some example embodiments and modes, the femto radio base station ( 28 f) reports the neighbor data structure to a network node ( 26, 100 ) other than the femto radio base station.; The other node ( 26, 100 ) uses the neighbor data structure for building the neighbor list at the other node. In some example embodiments and modes, acquisition of the system information comprises scanning a surrounding macro coverage area of the femto radio base station for obtaining cell identity information for detected cells. In other example embodiments and modes, the acquisition of the system information can additionally comprise camping on a macro cell and using/consulting at least one system information block in the camped-on macro cell is consulted/used for obtaining information about at least one neighboring cell.

Description

The automatic structure of Neighboring Cell List in the mobile system

Technical field

The present invention relates to wireless telecommunication, particularly relate to the operation of " femto " or " slightly " radio base station of radio access network.

Background technology

In typical cellular radio system, wireless user equipment units (UE) communicates through radio access network (RAN) and one or more core networks.User equipment unit (UE) can be a travelling carriage, mobile phone (" honeycomb " phone) and have the laptop computer of portable terminal for example, thereby can be for example portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they and radio access network carry out voice and/or data communication.Perhaps, wireless user equipment units can be a stationary wireless device, for example as fixed cellular device/terminal of the part of wireless local loop etc.

Radio access network (RAN) covers the geographic area that is divided into some sub-districts, and wherein each sub-district provides service by the base station.The sub-district is the geographic area that the radio covering is provided by the wireless base station unit at base station site place.Each sub-district identifies by the unique identity as system information broadcast in the sub-district.The base station communicates by the user equipment unit (UE) in air interface and the base station scope.In radio access network, several base stations (for example by land line or microwave) usually is connected to radio network controller (RNC).Radio network controller is also referred to as base station controller (BSC) sometimes, the comings and goings of a plurality of base stations that its monitoring and coordination are connected.Radio network controller is typically connected to one or more core networks.Core network has two service-domains, and wherein RNC has the interface to these two territories.

An example of radio access network is Universal Mobile Telecommunications System (UMTS) terrestrial radio Access Network (UTRAN).UMTS is a third generation system, is based on the radio access technologies that is called global system for mobile communications (GSM) of Europe exploitation in some aspects.UTRAN is the radio access network that Wideband Code Division Multiple Access (WCDMA) (WCDMA) is provided to user equipment unit (UE) in essence.Third generation partner program (3GPP) has set about further developing UTRAN and based on the radio access network technology of GSM.

Those skilled in the art will recognize that in the WCDMA technology common band allows communication simultaneously between user equipment unit (UE) and a plurality of base station.In receiving station by distinguishing the signal that takies common band based on the spectrum CDMA waveform characteristic of using high speed pseudo noise (PN) sign indicating number.These high speeds PN sign indicating number is used for modulating the signal from base station and user equipment unit (UE) emission.Using the transmitter station of different PN sign indicating numbers (or time go up PN sign indicating number of skew) to produce can be in receiving station separately by the signal of demodulation.High speed PN modulation also allows receiving station easily by coming to produce received signal from single cell site in conjunction with the some different propagation paths that transmit.Therefore, in CDMA, connecting to another sub-district from a sub-district when switching, user equipment unit (UE) does not need inversion frequency.Like this, cell of origin continue as connect service is provided in, Target cell can be supported and being connected of user equipment unit (UE).Because user equipment unit (UE) communicates by at least one sub-district in handoff procedure all the time, therefore do not call out and interrupt.Therefore be called " soft handover ".Compare with direct-cut operation, soft handover is " carrying out before the interruption " conversion operations.

The telecommunication system that comprises other type of radio access network comprises: global system for mobile communications (GSM); Advanced mobile phone service (AMPS) system; Arrowband AMPS system (NAMPS); Total access communication system (TACS); Personal digital cellular (PDC) system; U.S.'s digital cellular (USDC) system; And the code division multiple access of describing among the EIA/TIA IS-95 (CDMA) system.

In UTRAN, there are several interfaces of being paid close attention to.Interface between radio network controller (RNC) and the core network is called " Iu " interface.Interface between radio network controller (RNC) and base station (BS) thereof is called " Iub " interface.Interface between user equipment unit (UE) and the base station is called " air interface " or " radio interface " or " Uu interface ".In some cases, connect and to relate to source and Serving RNC (SRNC) and target or Drift Radio Network Controller (DRNC), SRNC control connection wherein, but the one or more various branch that connects is handled by DRNC.Transmission link can be used for the transmission that control and data signal between source RNC and drift or the Target RNC between RNC, and can be direct link or logical links.The interface of (for example between Serving RNC (SRNC) and the Drift Radio Network Controller (DRNC)) is called " Iur " interface between the radio network controller.

Radio network controller (RNC) control UTRAN.In realizing its control action, the resource of RNC management UTRAN.The hardware that disturbs and be positioned at the base station comprising down link (DL) power of base station, the up link (UL) that feels the base station by this class resource of RNC management.

Some operators are investigating and are using small radio base station (" RBS ") to come to provide as the user of limited quantity the possibility of family or zonule WCDMA covering, and wherein small radio base station (" RBS ") is called " femto RBS " and/or " RBS of family " and/or " RBS slightly " and/or " little RBS " again in some contexts.According to this investigation, little RBS will provide conventional WCDMA to cover for terminal use's (for example being user equipment unit (UE)), and will use certain IP-based transmission to be connected to RNC.The overlay area that provides like this is called " Femto cell " (smaller with the indication overlay area).Other term of Femto cell comprises " picocell " or " Microcell ", and it and macrocell grand or standard radio base station (RBS) covering form contrast.

An alternative of IP-based transmission is to use fixed broadband to insert (for example xDSL, Cable etc.) RBS of family is connected to RNC.Another alternative is to use WiMAX to insert (for example HSDPA and enhanced uplink or WiMAX).Fig. 5 illustrates in greater detail two kinds of different backhaul alternatives.First alternative is labeled as " xDSL backhaul ", and second alternative is labeled as " WiMAX backhaul ".

In general, by the staff of operator, as having or safeguarding that the office worker of company of operator of the RNC node of grand RBS node and radio access network (RAN) installs and dispose common WCDMA base station (grand RBS).As a part of installing, use operating parameter, as the grand RBS of neighbor cell list information manual configuration.

On the contrary, femto RBS installs by the terminal use rather than by Virtual network operator usually.The terminal use can also move to another place from a place geographically with femto RBS, can or be ready to control reorientating of femto RBS and need not operator.This user guided reorientate require to handle operating parameter automatically, as neighbor cell list information.

Neighbor cell list is the set of cells that should measure the user equipment unit of idle pulley to it.Neighbor cell list (being called " Neighboring Cell List " again) is generally comprised within from radio base station and provides the broadcasting of idle mode subscriber device unit of service to radio base station.Send the Neighboring Cell List of monitored set form to the user equipment unit (dedicated signaling that passes through to user equipment unit connects) of activity pattern or connected mode.Monitored set is listed and will be used for measuring the tabulation of the neighbor cell that may switch to from this sub-district that Control Node (as the radio controller node) ordered by user equipment unit.

In other words, the information that base station broadcast and the user equipment unit (UE) of idle pulley should be relevant to its neighbor cell of measuring is so that allow UE determine to preempt which sub-district.Under the situation of active session, the tabulation of the sub-district of monitored set connects transmission (promptly by dedicated signaling, be not broadcasted in this case) to this UE, and guide UE which sub-district is carried out measurement report and the switching to which sub-district that RNC orders may be taken place.

Term as used herein " neighbor cell list " and " Neighboring Cell List " are used for the broadcast idle mode neighbor cell list and are used for activation/connected mode neighbor cell list (being monitored set).

Create the tabulation of this class sub-district, need a large amount of operations and management (O﹠amp; M) work and back-up system.Tabulation also should be loaded into network controller (for example on the RNC node) and be associated with correct base station.This increases the risk of manual errors again.

Because the processing of Neighboring Cell List needs extensive work, under the situation of slight (femto) base station, can increase required work considerably, particularly because femto base station can move to new position by the terminal use, as mentioned above.Traditionally, insert the automated manner that does not have automatic structure neighbor cell list in alternative or some variation at fixed broadband in the WiMAX alternative.

Therefore, target required and that this paper provided is the new auto-mechanism that makes up the Neighboring Cell List of the nano-micro-radio base stations that IP connects.

Summary of the invention

In radio access network, nano-micro-radio base stations comprises resident receiver, and it obtains the system information of broadcasting in the radio access network at (passing through radio interface).At least a portion of system information is used for making up the adjacent area data structure of the information that comprises neighbor cell on nano-micro-radio base stations.Then, the adjacent area data structure is used to make up Neighboring Cell List.Neighboring Cell List sends to the user equipment unit that nano-micro-radio base stations provides service from nano-micro-radio base stations subsequently.

In some example embodiment and pattern, nano-micro-radio base stations is to network node report adjacent area data structure.Another node uses the adjacent area data structure to make up Neighboring Cell List.Another node can be a radio network controller node or be connected to the back-end system node of radio network controller node for example.The Neighboring Cell List that another node is made up sends to nano-micro-radio base stations, for example make that being broadcast to nano-micro-radio base stations at Neighboring Cell List provides the idle mode subscriber device unit of service or connect by dedicated signaling on the meaning of the particular user equipment unit that sends to connected mode or activity pattern, nano-micro-radio base stations can send to the user equipment unit that nano-micro-radio base stations provides service from nano-micro-radio base stations with Neighboring Cell List again subsequently.

In some example embodiment and pattern, obtaining of system information comprises the grand overlay area on every side of scanning nano-micro-radio base stations, so that obtain the cell identification information of institute's detected cells.For each institute's detected cells, cell identification information is added the adjacent area data structure.In addition, the resident receiver of nano-micro-radio base stations is added into the measurement of each sub-district execution signal strength signal intensity of adjacent area data structure for its cell identity.The measured value of the signal strength signal intensity of each this sub-district is added the adjacent area data structure.

In other example embodiment and pattern, the obtaining of system information also comprises and at least temporarily is camped in the macrocell that finds during the grand covering of scanning.The cell identification information and the signal strength measurement of preemption macrocell are added the adjacent area data structure.In addition, the information relevant with at least one neighbor cell that obtains is inquired about/be used to at least one system information block in the preemption macrocell.Also cell identification information and the signal strength measurement with neighbor cell adds the adjacent area data structure.Obtain the cell identity and the signal strength measurement of the neighbor cell of idle pulley by system information block from the preemption macrocell, can select the candidate of adjacent area data structure and need not to scan may the sub-district gamut.In addition, when needed, the adjacent area data structure that nano-micro-radio base stations makes up can be used as and sends to the Neighboring Cell List that nano-micro-radio base stations provides the user equipment unit of service.

In some embodiment and pattern, at least one that the step of using the adjacent area data structure to make up Neighboring Cell List may further comprise the steps: (1) filters at least one sub-district from the adjacent area data structure; (2) use the replacement sub-district to replace at least one sub-district of adjacent area data structure; And (3) add the adjacent area data structure with new sub-district.The modification of filtration, replacement and/or interpolation sub-district can be carried out according to inner strategy.

Relating to the nano-micro-radio base stations that comprises resident radio receiver aspect of present technique, resident radio receiver is arranged for the grand overlay area on every side of scanning nano-micro-radio base stations so that obtain to comprise the system information of the cell identification information of institute's detected cells, and is used to carry out signal strength measurement.Nano-micro-radio base stations comprises that also the adjacent area data structure makes up device, at least a portion that it is arranged to using system information makes up the adjacent area data structure of the information that comprises neighbor cell, and described adjacent area data structure makes up device and is arranged in the cell identification information that comprises institute's detected cells in the data structure of adjacent area and the signal strength measurement of each sub-district in the data structure of adjacent area.

Relating to nano-micro-radio base stations aspect of present technique, its resident radio receiver not only be arranged for the scanning nano-micro-radio base stations around grand overlay area so that obtain system information, at least temporarily preempt the macrocell that scan period finds but also be arranged for.As the result who at least temporarily preempts macrocell, nano-micro-radio base stations also is arranged for acquisition: the cell identity and the signal strength measurement of the macrocell that (1) is preempted; And the system information block in (2) macrocell of being preempted, be used to obtain the information relevant with at least one neighbor cell.Nano-micro-radio base stations comprises that also the adjacent area data structure makes up device, and it is arranged to use (1) and (2) to make up the adjacent area data structure.Randomly, nano-micro-radio base stations also can comprise list manager, and it is arranged to use the adjacent area data structure of nano-micro-radio base stations to make up the neighbor data structure of device structure as sending to the Neighboring Cell List that nano-micro-radio base stations provides the user equipment unit of service.

Aspect another of present technique, relate to the radio access network (RAN) that comprises nano-micro-radio base stations and another node.Nano-micro-radio base stations comprises that at least a portion that is arranged for the resident radio receiver that obtains the system information broadcasted in the radio access network and using system information makes up the parts of the adjacent area data structure of the information that comprises neighbor cell on nano-micro-radio base stations.Another node is arranged to use the adjacent area data structure to make up Neighboring Cell List.Another node can be a radio network controller node or be connected to the back-end system of radio network controller node for example.

Description of drawings

By below in conjunction with the more specifically explanation of accompanying drawing to preferred embodiment, above-mentioned and other purpose of the present invention, feature and advantage will be very obvious, and in the accompanying drawing, reference number is represented the same section in each view.Accompanying drawing is not necessarily proportionally drawn, and emphasis is to be to illustrate principle of the present invention.

Figure 1A is the diagrammatic view of an example embodiment that comprises the telecommunication system of radio access network, and wherein, selected nano-micro-radio base stations is connected to radio access network (RAN) by general access transport.

Figure 1B is the diagrammatic view of an example embodiment that comprises the telecommunication system of radio access network, and wherein, selected nano-micro-radio base stations is connected to radio access network (RAN) by the mobile broadband access transport.

Fig. 2 A is to use the schematic diagram of an example embodiment of the nano-micro-radio base stations of general broadband-access transmission.

Fig. 2 B is to use the schematic diagram of an example embodiment of the nano-micro-radio base stations of WiMAX access transport.

Fig. 2 C is to use the nano-micro-radio base stations of WiMAX access transport and initiatively uses the schematic diagram of the adjacent area data structure of nano-micro-radio base stations formation as an example embodiment of Neighboring Cell List.

Fig. 3 A is the schematic diagram of radio network controller (RNC) node of first example embodiment.

Fig. 3 B is the schematic diagram of radio network controller (RNC) node of second example embodiment.

Fig. 4 A is the exemplary step carried out in first example mode of operation and the diagrammatic view of action.

Fig. 4 B is the exemplary step carried out in second example mode of operation and the diagrammatic view of action.

Fig. 4 C is the exemplary step carried out in the 3rd example mode of operation and the diagrammatic view of action.

Fig. 4 D is the exemplary step carried out in the 4th example mode of operation and the diagrammatic view of action.

Fig. 5 is the diagrammatic view that two different backhaul alternatives are shown.

Embodiment

For convenience of explanation rather than limit, set forth such as details such as particular architecture, interface, technology, so that fully understand the present invention in below describing.Yet, it will be apparent to those skilled in the art that also and can in being different from other embodiment of these details, implement the present invention.That is to say that though do not describe clearly or represent that those skilled in the art can design various schemes, these schemes have embodied principle of the present invention herein, therefore be included within its spirit and scope.In some cases, omitted detailed description, in order to avoid unnecessary details hinders the description of this invention to known device, circuit and method.All statements of principle of the present invention, aspect and embodiment and the equivalents that instantiation is intended to comprise its structure and function thereof are described herein.In addition, estimate this class equivalents comprise current known equivalents and exploitation in the future equivalents, be any unit of the execution identical function developed, and and structure-irrelevant.

Therefore, for example, it will be understood by those skilled in the art that herein block diagram can represent to embody the conceptual view of illustrative circuit of the principle of present technique.Similarly, be appreciated that expression such as any flow chart, state transition diagram, false code is in fact can be by computer-readable medium represented thereby by computer or the performed various processes of processor, whether no matter this computer or processor clearly are shown.

The function that comprises the various unit of the functional block that is labeled as " processor " or " controller " can be by using specialized hardware and can combining the hardware of operating software to provide with suitable software.When being provided by processor, function can be to share or distributed a plurality of independent processor provides by single application specific processor, by single shared processing device or by a part wherein.In addition, clearly the using of term " processor " or " controller " not should be understood to the hardware that special expression can operating software, but can comprise digital signal processor (DSP) hardware without limitation, is used for read-only memory (ROM), random-access memory (ram) and the Nonvolatile memory devices of storing software.

In the non-limiting example context of telecommunication system shown in Figure 1A 10, the present invention is described.Telecommunication system 10 is connected to core network 20.Telecommunication system 10 comprises radio access network 24.Radio access network 24 comprises one or more radio network controller nodes (RNC) 26 and one or more radio base station (BS) 28.Explanation for example, Figure 1A specifically illustrates the i.e. first radio net Control Node 26 of two radio network controller nodes 1With the second radio net Control Node 26 2And grand radio base station (only illustrates a grand radio base station 28 among Figure 1A M) and a plurality of nano-micro-radio base stations 28 F1, 28 F2... 28 FxGrand radio base station 28 MServe macrocell C MNano-micro-radio base stations 28 F1, 28 F2... 28 FxServe corresponding Femto cell C F1, C F2... C FxThose skilled in the art understands, radio base station is usually located at the respective cell inside (or center) that radio base station provides service, but for the sake of clarity, the grand radio base station of Figure 1A and nano-micro-radio base stations are shown by double-head arrow and are associated with their sub-districts separately.Femto cell C F1, C F2... C FxIn at least a portion geographically with macrocell C MOverlapping or by its covering.

This paper employed " nano-micro-radio base stations " also has the pico radio base station of serving Femto cell (or picocell or Microcell) or the implication of little radio base station.Femto cell is overlapping with one or more macrocells usually, and serves geographic area or the subscriber district littler than macrocell.The techniques described herein need not for installing and/or reorientate that owner/operator by radio access network controls described installation or the nano-micro-radio base stations of reorientating is very favourable in radio access network.In other words, non-network operator entity (femto operator) can obtain nano-micro-radio base stations, and according to femto operating personnel's preference nano-micro-radio base stations is set.In this respect, Figure 1A illustrates a kind of like this nano-micro-radio base stations 28 that may just moved or activated by femto operator just FjNano-micro-radio base stations 28 FjBe provided with or locate its Femto cell C geographically Fj, so that by macrocell C MCover.

User equipment unit (UE) 30 shown in user equipment unit (UE), for example Figure 1A communicates with one or more sub-districts or one or more base station (BS) 28 by radio or air interface 32.User equipment unit can be a travelling carriage, mobile phone (" honeycomb " phone) and have the laptop computer of portable terminal for example, thereby can be for example portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they and radio access network carry out voice and/or data communication.

As limiting examples, the radio access network 24 shown in Figure 1A can be a UMTS terrestrial radio Access Network (UTRAN).In UTRAN, radio inserts preferably based on Wideband Code Division Multiple Access (WCDMA) (WCDMA), and wherein each radio channel uses the CDMA spreading code to distribute.Certainly also can use other cut-in method.At the instance aspect of UTRAN, node 26 and 28 is called radio net Control Node and radio base station node respectively.But, should be appreciated that term " radio net control " and " radio base station " also comprise the node with identity function for the radio access network of other type.The telecommunication system of other type that comprises the radio access network of other type comprises: global system for mobile communications (GSM); Advanced mobile phone service (AMPS) system; Arrowband AMPS system (NAMPS); Total access communication system (TACS); Personal digital cellular (PDC) system; U.S.'s digital cellular (USDC) system; And the code division multiple access of describing among the EIA/TIAIS-95 (CDMA) system.

Radio access network 24 is by interface, be connected to core network 20 as the Iu interface of UTRAN.Can comprise mobile switching centre (MSC) node, gateway MSC node (GMSC), gateway general packet radio service (GPRS) support node (GGSN) and Serving GPRS Support Node (SGSN) in the core network 20 of Figure 1A.Circuit switching (CS) network or packet switching (PS) network can be connected to core network 20.

For the sake of brevity, the radio access network 24 of Figure 1A is shown and only has two RNC nodes 26.A plurality of radio network controller nodes (RNC) can be provided, and wherein each RNC 26 is connected to one or more base stations (BS) 28.Be appreciated that the base station that radio net control 26 can be with the varying number shown in Figure 1A provides service, and RNC need not to serve the base station of equal number.In addition, RNC can be connected to other one or more RNC in the radio access network 24 by the Iur interface.Radio network controller node (RNC) 26 is by interface Iub and grand radio base station 28 MCommunicate.In addition, those skilled in the art it is also understood that, the base station, is called radio base station, Node B or B node sometimes again in this area as grand radio base station 28.Each radio interface 32, Iu interface, Iur interface and Iub interface are shown in the chain-dotted line among Figure 1A.

Figure 1A can regard explanation nano-micro-radio base stations 28 as FjTo radio access network (RAN), for example to its radio network controller node (as radio network controller node 26 under the situation about specifically illustrating 1) general visit.Offer nano-micro-radio base stations 28 by " general visit " expression FjAccess can be that broadband fixed inserts or access (as WiMAX) is moved in the broadband, as mentioned above.For this reason, in Figure 1A, comprise nano-micro-radio base stations 28 FjNano-micro-radio base stations 28 fBe connected to communication network 38.An example of this communication network is an IP network 38.

On the contrary, Figure 1B illustrates nano-micro-radio base stations 28 FjBroadband wireless or a kind of situation that move to insert.Therefore, Figure 1B illustrates, nano-micro-radio base stations 28 FjAccess to radio access network 24 is by grand radio base station (the grand RBS 28 for example in the situation M).As previously described, wireless or mobile broadband inserts and can use for example high-speed downlink packet access (HSDPA) and enhanced uplink or WiMAX to carry out.If do not offer some clarification in context, then the aspect of technology described herein is applicable to all types of accesses, comprises that broadband fixed inserts and access (for example broadband wireless access) is moved in the broadband.

Fig. 2 A illustrates the general nano-micro-radio base stations 28 of first example fSelected basic, typical component units.Nano-micro-radio base stations 28 F1, 28 F2... 28 FxIn one or morely take general nano-micro-radio base stations 28 shown in Figure 2 fForm.The nano-micro-radio base stations 28 of Fig. 2 fBe expressed as except its other not shown component units and also comprise: IP interface unit 50; One or more radio-frequency (RF) transceiver 52, radio frequency receiver 54; And data handling system, part or unit 56.Fig. 2 A is shown data handling system 56 and comprises controller or processor, and it comprises that UE measures list manager 57 and the adjacent area data structure makes up device 58A.The adjacent area data structure makes up that device 58A is provided with and configuration is used to make up the adjacent area data structure 59A of being called shown in Fig. 2 A " All_Cells_Found " for example etc.Everybody will appreciate that UE measures list manager 57 and adjacent area data structure structure device 58A can take other form, for example one or more independent processors or controller.

Fig. 2 B illustrates another example nano-micro-radio base stations 28 fSelected basic, typical component units.The nano-micro-radio base stations 28 of Fig. 2 B fMany unit and the nano-micro-radio base stations 28 of Fig. 2 A fThe unit identical or similar at least, shown in corresponding reference number.Nano-micro-radio base stations 28 in view of Fig. 2 B fThe adjacent area data structure make up device and be arranged for the fact that makes up its adjacent area data structure in different slightly modes, the adjacent area data structure makes up device and adjacent area data structure and is shown the adjacent area data structure respectively and makes up device 58B and adjacent area data structure 59B.

Nano-micro-radio base stations 28 for Fig. 2 A fAnd the nano-micro-radio base stations 28 of Fig. 2 B f, radio-frequency (RF) transceiver 52 is used for by radio or air interface and femto base station 28 fUser equipment unit (UE) communication in the Femto cell of service.The quantity of radio-frequency (RF) transceiver 52 depends on various factors, comprises the mobile ability that connects of nano-micro-radio base stations processing.

Receiver 54 resides in nano-micro-radio base stations 28 fOn, and be used at nano-micro-radio base stations 28 fGo up the system information of obtaining broadcasting in the radio access network 24 by radio interface 32.When radio access network (RAN) was the WCDMA network, for the embodiment of Fig. 2 A and the embodiment of Fig. 2 B, receiver 54 was WCDMA receivers.In this sense, in two embodiment, receiver 54 can be taked the form of user equipment unit (UE).That is to say, at the nano-micro-radio base stations 28 of Fig. 2 A fIn, receiver 54 can be can grand covering of scan period the user equipment unit based on RBS (UE).

Fig. 3 A illustrates selected basic, the typical component units of the first example radio network Control Node 26.Radio net Control Node 26 can comprise some interface units, for example comprises: interface unit 70 is used for by the Iu interface radio net Control Node 26 being connected to core network 20; Interface unit 72 is used for by the Iur interface radio net Control Node 26 being connected to other radio network controller; One or more interface units 74 are used for by Iub interface radio net Control Node 26 being connected to corresponding one or more grand radio base stations 28 MAnd one or more interface units 76, be used for radio net Control Node 26 is connected to corresponding one or more nano-micro-radio base stations 28 F1, 28 F2... 28 FxRNC 26 and nano-micro-radio base stations 28 MBetween connection can be undertaken by communication network 38, and for example can use transmission based on Internet Protocol (IP).RNC 26 and grand radio base station 28 MBetween connection for example preferably use based on Internet Protocol (IP) and/or based on the transmission of ATM.

Except interface unit, radio net Control Node 26 also comprises many unshowned component units and data handling system, part or unit 80.As shown in Figure 3, in a non-limiting example realized, the data handling system 80 of radio net Control Node 26 comprised: control section (for example controller 82); Switch unit 84; Combiner and separator unit 86 (for example related in handling the various branch that is connected); And Neighboring Cell List makes up device 90.

Neighboring Cell List makes up device 90 settings and is disposed for from nano-micro-radio base stations 28 fReceive the adjacent area data structure, and be used to make up Neighboring Cell List.Comprise that Neighboring Cell List makes up the exemplary functional shown in the separate functional unit of device 90 and comprises RBS data structure receiver 92, data structure modifier 94 and Neighboring Cell List exporter 96.Data structure modifier 94 is shown and randomly comprises other various functional or unit, for example filter unit 97, policy unit 98 and adder unit 99.Everybody will appreciate that Neighboring Cell List makes up device 90 and functional unit shown in any can be taked other form, for example one or more independent processors or controller.

Fig. 3 B illustrates another example radio network controller node 26.Many unit of the radio network controller node 26 of Fig. 3 B are identical or similar at least with the unit of the radio network controller node 26 of Fig. 3 A, shown in corresponding reference number.But, the difference of the radio network controller node 26 of Fig. 3 B is the following fact: Neighboring Cell List makes up the functional back-end system of distributing to the radio network controller node 26 that is connected to Fig. 3 B that changes into of device, shown in the Neighboring Cell List structure device node 100 of Fig. 3 B.The radio network controller node 26 of Fig. 3 B comprises Neighboring Cell List processor 102, and it and Neighboring Cell List make up device node 100 interfaces, and the management Neighboring Cell List makes up the transmission of the Neighboring Cell List of device node 100 structures to nano-micro-radio base stations.By making up the similar mode of device 90, comprise that Neighboring Cell List makes up the exemplary functional shown in the separate functional unit of device node 100 and comprises: RBS data structure receiver 192 to Neighboring Cell List; Data structure modifier 194; And Neighboring Cell List exporter 196, wherein data structure modifier 194 randomly comprises other various functional or unit, for example filter unit 197, policy unit 198 and adder unit 199.Will appreciate that equally Neighboring Cell List makes up device node 100 and functional unit shown in any can be taked other form, for example one or more independent processors or controller.

Fig. 4 A illustrates exemplary step and the action of carrying out in first example mode of operation.Therefore first example mode of operation is general access type, can comprise fixed broadband is inserted and WiMAX inserts the two one or two performed step and action.The exemplary step of Fig. 4 A and other similar accompanying drawing and action for example can be at nano-micro-radio base stations 28 FjTake place when just activating by the femto operating personnel.

The step 4A-1 of Fig. 4 A illustrates the system information that resident receiver 54 obtains broadcasting in (by radio interface 32) radio access network 24.Specifically, step 4A-1 illustrates nano-micro-radio base stations 28 fReceiver scanning nano-micro-radio base stations around grand overlay area so that obtain the cell identification information of institute's detected cells.In an example WCDMA realized, receiver 54 read relevant scrambler, and to Master Information Block (MIB) decoding, so that search PLMN-ID; Read system information piece 1 (SIB 1) and to its decoding, so that search LAC; And read system information piece 3 (SIB 3) and to its decoding, so that search the cell identity system information.At step 4A-2, the adjacent area data structure makes up device 58 sub-district of being detected (use cell identifier) is added adjacent area data structure 59.For the sub-district that each detected, cell identification information is added adjacent area data structure 59.

At step 4A-3, nano-micro-radio base stations 28 fThe resident receiver 54 adjacent area data structure 59 of each sub-district be added into to(for) its cell identity carry out the measurement of signal strength signal intensity.As the part of step 4A-3, the measured value of the signal strength signal intensity of each this sub-district is added the adjacent area data structure.In other words, receiver 54 is also carried out the measurement of signal strength signal intensity for each sub-district of listing in the adjacent area data structure 59 (All_Cells_Found).After finishing adjacent area data structure 59, nano-micro-radio base stations 28 fThe IP-based connection of preferably using IP network 38 to provide comes radio network controller node 26 report these results (taking the form of adjacent area data structure 59) to it.Fig. 4 A illustrates as step 4A-4 to radio network controller node 26 report adjacent area data structures 59.

When receiving adjacent area data structure 59, radio network controller node 26 suitably calls Neighboring Cell List and makes up device 90.The structure of Neighboring Cell List is generally shown in the step 4A-5 of Fig. 4 A.The RBS data structure receiver 92 that Neighboring Cell List makes up device 90 receives and analyzes basically from nano-micro-radio base stations 28 fThe adjacent area data structure 59 that receives.Neighboring Cell List makes up device 90 and makes up the Neighboring Cell List that is called Femto_RBS_SI_Neigboring_List again.When carrying out such operation, Neighboring Cell List makes up device 90 can call data structure modifier 94.For example, the filter unit 97 of data structure modifier 94 can be according to some inner strategy optional or selectively with filtration application in the ALL_Cells_Found (for example the adjacent area data structure 59) that receives from femto RBS, make some sub-district not be included among the Femto_RBS_SI_Neigboring_List.When making up Femto_RBS_SI_Neigboring_List, also can when regulative strategy unit 98, come to replace some sub-district with other sub-district according to inner strategy.As the 3rd selection, can brand-new sub-district be included in (for example by adder unit 99 interpolations) among the Femto_RBS_SI_Neigboring_List according to inner strategy and All_Cells_Found information.

According to embodiment, these strategies that data structure modifier 94 is realized can be by Virtual network operator in RBS or RNC, for example dispose in the node that makes up neighbor cell list.These strategies also can be at central network node (for example RNC or O﹠amp; The M node) defines in, download to the RBS of application strategy then.An example policy is not comprise the sub-district with the measure signal intensity that is lower than certain threshold value.Another strategy is to belong to which PLMN sub-district is piped off (shown in PLMN-ID) according to the sub-district.Another strategy is not comprise some sub-district that Virtual network operator disposes in " blacklist ".Another strategy is to have mapping table, for example, if reported macrocell X (for example UMTS sub-district), then uses macrocell Z (for example GSM sub-district) to replace all the time.

After step 4A-5 finished the structure Neighboring Cell List, 96 formats of Neighboring Cell List exporter and/or preparation Neighboring Cell List were so that send to nano-micro-radio base stations 28 fThe step 4A-6 of Fig. 4 a illustrates Neighboring Cell List is sent to nano-micro-radio base stations 28 from radio network controller node 26 fStep 4A-7 is illustrated in the UE measurement list manager 57 and stores from radio network controller node 26 1The Neighboring Cell List that receives.Step 4A-8 illustrates subsequently Neighboring Cell List from nano-micro-radio base stations 28 fSend to nano-micro-radio base stations the user equipment unit 30 of service is provided.As the realization of step 4A-8, to nano-micro-radio base stations 28 fAll user equipment unit broadcasting Neighboring Cell List of the idle pulley of service are provided.Realize as another of step 4A-8, Neighboring Cell List is connected to send to by dedicated signaling with the form of monitored set connect or the particular user equipment unit of activity pattern.

Point out that in passing UE measures the notice that list manager 57 can be used for storing the tabulation different with Neighboring Cell List with management, for example comprises monitored set.

For the example embodiment of the nano-micro-radio base stations shown in Fig. 2 A, the adjacent area data structure 59A that the adjacent area data structure makes up device 58A structure is shown the tabulation that comprises " scanning sub-district ", because the nano-micro-radio base stations 28 of Fig. 2 A fReceiver 54 scanned around the overlay area.

Fig. 4 B illustrates exemplary step and the action of carrying out in second example mode of operation.In the operator scheme shown in Fig. 4 B, the step 4A-1 that comprises the pattern of Fig. 4 A enlarges to the series of steps of step 4B-3 by comprising step 4B-1 to the series of steps of step 4A-3.

The step 4B-1 of Fig. 4 B illustrates the macrocell that scan period that resident receiver 54 at least temporarily preempts step 4A-1 finds, and obtains the system information of broadcasting in (by radio interface 32) radio access network 24.As step 4B-2, if be not included among the data structure 59B of adjacent area, then cell identification information and the signal strength measurement with the macrocell that preempted adds adjacent area data structure 59B.In addition, as step 4B-3, the information relevant with at least one neighbor cell that obtains is inquired about/be used to at least one system information block in the macrocell that is preempted.As the part of step 4B-3, also cell identification information and the signal strength measurement with at least one neighbor cell adds the adjacent area data structure.

The above content of more detailed description is when nano-micro-radio base stations 28 fIn receiver 54 (UE) when successfully having preempted macrocell, if in the data structure 59B of adjacent area, exist yet, then also the measurement and the identity of the sub-district of current preemption is included in adjacent area data structure 59B (as step 4B-2).Receiver 54 (UE) also can read the system information block 11 (SIB11) of current area and to its decoding.SIB 11 comprises the information relevant with the neighbor cell of idle pulley, and can be used to select the candidate of All_Cells_Found rather than the gamut of scanning possibility sub-district.

The step 4A of the example modes of Fig. 4 B is same or similar to step 4A-8 with the corresponding steps 4A-4 of Fig. 4 A in essence to step 4A-8.These steps comprise: as step 4A-4, to radio network controller node 26 report adjacent area data structure 59B; The structure Neighboring Cell List is shown as step 4A-5; As step 4A-6, Neighboring Cell List is sent to nano-micro-radio base stations 28 from radio network controller node 26 fAs step 4A-7, storage is from radio network controller node 26 in UE measurement list manager 57 1The Neighboring Cell List that receives; And as step 4A-8, subsequently with Neighboring Cell List from nano-micro-radio base stations 28 fSend to nano-micro-radio base stations the user equipment unit 30 of service is provided.

Example embodiment for the nano-micro-radio base stations shown in Fig. 2 B, the adjacent area data structure 59B that the adjacent area data structure makes up device 58B structure is shown the tabulation that comprises " from the sub-district of system information " together with the identifier of the sub-district that is preempted, because the nano-micro-radio base stations 28 of Fig. 2 B fReceiver 54 obtained this system information from the system information of subdistricts piece that is preempted.Therefore, the adjacent area data structure of the mode construction of Fig. 4 B is the cascade of clauses and subclauses and clauses and subclauses shown in the adjacent area data structure 59B of Fig. 2 B shown in the data structure 59A of adjacent area.

By obtaining the cell identity of the neighbor cell of idle pulley from the system information block of the macrocell that preempted in the mode of the pattern of Fig. 4 B, can select the candidate of adjacent area data structure and need not to scan may the sub-district gamut.As independent process signal strength measurement is carried out in these sub-districts then.

In some example embodiment and pattern for example mentioned above, nano-micro-radio base stations is to the network node report adjacent area data structure that is different from nano-micro-radio base stations.Another node uses the adjacent area data structure to make up Neighboring Cell List at another node.In described embodiment, another node is the radio network controller node.

Fig. 4 C illustrates exemplary step and the action of carrying out in the 3rd example mode of operation.In the pattern of Fig. 4 C, another node that uses the adjacent area data structure to make up Neighboring Cell List is not a radio network controller node 26 1, but the Neighboring Cell List shown in Fig. 3 B makes up device node 100.It can be the back-end system node that for example is connected to the radio network controller node that Neighboring Cell List makes up device node 100.The preliminary step of Fig. 4 C can be preceding four steps of Fig. 4 A pattern or the first seven step of Fig. 4 B pattern.For the sake of brevity, Fig. 4 C with preceding several steps be shown first three step of Fig. 4 A pattern, as step 4A-1 to step 4A-4.As step 4A-4, adjacent area data structure 59 is received by radio network controller node 26.But as step 4C-4, radio network controller (RNC) makes up 100 distributions of device node or sends adjacent area data structure 59 to its Neighboring Cell List.Neighboring Cell List makes up device node 100 and uses adjacent area data structure 59 to make up Neighboring Cell List, shown in the step 4C-5 of Fig. 4 C.When finishing Neighboring Cell List, as step 4C-6, Neighboring Cell List makes up device node 100 and returns the Neighboring Cell List of finishing to radio network controller node 26, therefore, as step 4A-6, radio network controller node 26 sends the Neighboring Cell List of finishing to nano-micro-radio base stations 28 fStorage is from radio network controller node 26 in UE measurement list manager 57 1The step of the Neighboring Cell List that receives takes place as step 4A-7; And as step 4A-8, subsequently with Neighboring Cell List from nano-micro-radio base stations 28 fSend to nano-micro-radio base stations the user equipment unit 30 of service is provided.

In the embodiment and pattern of above-described Fig. 4 A-Fig. 4 C, with adjacent area data structure 59 or its certain variation or revise and send to another node, make another node can make up Neighboring Cell List from nano-micro-radio base stations.Then, another node returns to nano-micro-radio base stations with Neighboring Cell List.Interface and appropriate protocol are arranged for and send the adjacent area data structure, and send Neighboring Cell List between nano-micro-radio base stations and at least one other node.In certain embodiments, send adjacent area data structure and Neighboring Cell List by expansion Iub interface (for example " Iub+ " interface).The Iub+ interface class is similar to the conventional I ub interface that exists between radio base station node and the radio network controller node, but, this agreement thereby process enlarge or revise, so that comprise required information unit or the others of transmission that are used to realize adjacent area data structure and Neighboring Cell List.Perhaps, be not to use the expansion of Iub interface and agreement, but can use brand-new interface and agreement, its designs or is arranged for help and transmit adjacent area data structure and Neighboring Cell List between nano-micro-radio base stations and other network node or entity.

According at least one embodiment and the pattern of present technique, Neighboring Cell List not necessarily must be made up by the node that is different from nano-micro-radio base stations.In this respect, Fig. 4 D illustrates exemplary step and the action of carrying out in the 4th example mode of operation.The pattern of Fig. 4 D is also passed through the nano-micro-radio base stations 28 of Fig. 2 C fIllustrate.

The first six step of Fig. 4 D pattern is identical with Fig. 4 B pattern: step 4A-1 to step 4A-3 and step 4B-1 to step 4B-3.But, be not to send nano-micro-radio base stations 28 to another node fThe adjacent area data structure 59B that makes up is so that revised or made up Neighboring Cell List by another node, shown in the step 4D-5 among Fig. 4 D, but nano-micro-radio base stations 28 fUse the adjacent area data structure 59B that has made up as Neighboring Cell List.In this respect, Fig. 3 C also illustrates, and as step 4D-5, the adjacent area data structure 59B that is made up device 58B structure by the adjacent area data structure is used or sends to UE measurement list manager 57.Step 4D-8 illustrates subsequently Neighboring Cell List (taking from adjacent area data structure 59B) from nano-micro-radio base stations 28 fSend to nano-micro-radio base stations the user equipment unit 30 of service is provided.

Therefore, shown in the pattern of Fig. 4 D, when needed, the adjacent area data structure that nano-micro-radio base stations makes up can be used as and sends to the Neighboring Cell List that nano-micro-radio base stations provides the user equipment unit of service.Above-mentioned principle/method is also applicable to the radiotechnics different with WCDMA, and WCDMA only illustrates as an example.Other suitable technology includes but not limited to GSM, CDMA, WiMAX etc.This technology is concrete relevant with the system and the situation of above-mentioned and suitable description, but also applicable to other situation and other network.

Though described and described various embodiment of the present invention in detail, claims are not limited to any specific embodiment or example.More than describe and be not appreciated that any concrete unit of hint, step, scope or function are necessary.The invention is not restricted to the disclosed embodiments, but be intended to contain various modifications and equivalent.

Claims (14)

1. the method for operate wireless electricity Access Network (24) is characterized in that:
At nano-micro-radio base stations (28 Fj) upward and by radio interface (32) obtain the middle system information of broadcasting of radio access network (24);
At least a portion of using described system information is at described nano-micro-radio base stations (28 Fj) the last adjacent area data structure (59) that makes up the information that comprises neighbor cell;
Use described adjacent area data structure (59) to make up Neighboring Cell List;
With described Neighboring Cell List from described nano-micro-radio base stations (28 Fj) send to by described nano-micro-radio base stations (28 Fj) user equipment unit (30) of service is provided.
The method of claim 1, wherein with Neighboring Cell List from nano-micro-radio base stations (28 Fj) send to by nano-micro-radio base stations and provide the described step of the user equipment unit (30) of service to comprise: provide the user equipment unit of service to broadcast described Neighboring Cell List to what be in idle pulley by described nano-micro-radio base stations.
The method of claim 1, wherein with Neighboring Cell List from nano-micro-radio base stations (28 Fj) send to by nano-micro-radio base stations and provide the described step of the user equipment unit (30) of service to comprise: use dedicated signaling connect with described Neighboring Cell List as monitored set send to be in activity pattern or connected mode provide the user equipment unit of service by described nano-micro-radio base stations.
4. the method for claim 1 also comprises:
To being different from described nano-micro-radio base stations (28 Fj) network node (26,100) report described adjacent area data structure (59), and use described adjacent area data structure (59) to go up to make up Neighboring Cell List at described another node (26,100);
Described Neighboring Cell List is sent to described nano-micro-radio base stations (28 Fj).
5. method as claimed in claim 4, wherein, described another node is radio network controller node (26).
6. the described step that the method for claim 1, wherein obtains system information comprises the described nano-micro-radio base stations (28 of scanning Fj) around grand overlay area so that obtain the cell identification information of institute's detected cells, and wherein, described method also comprises for each institute's detected cells carries out following steps:
Described cell identification information is added described adjacent area data structure (59);
Be added into the measurement of each sub-district execution signal strength signal intensity of described adjacent area data structure (59) for its cell identity;
The measured value of described signal strength signal intensity is added described adjacent area data structure (59).
7. method as claimed in claim 6, wherein, the described step that obtains system information also comprises the preemption macrocell, and wherein, described method also comprises:
The cell identification information and the signal strength measurement of the macrocell that preempted are added described adjacent area data structure (59);
Use at least one system information block in the macrocell that is preempted to obtain the information relevant with neighbor cell;
The cell identification information and the signal strength measurement of described neighbor cell are added described adjacent area data structure (59).
8. method as claimed in claim 6 also comprises: use by described nano-micro-radio base stations (28 Fj) the described adjacent area data structure (59) that makes up is as described Neighboring Cell List.
9. at least one that the described step of the method for claim 1, wherein using adjacent area data structure (59) to make up Neighboring Cell List may further comprise the steps:
Filter at least one sub-district from described adjacent area data structure (59);
Use and replace at least one sub-district that described adjacent area data structure (59) is replaced in the sub-district; And
New sub-district is added described adjacent area data structure (59).
10. nano-micro-radio base stations (28 Fj), it is characterized in that:
Resident radio receiver (54) is arranged for the described nano-micro-radio base stations (28 of scanning Fj) around grand overlay area so that obtain to comprise the system information of the cell identification information of institute's detected cells, and be used to carry out signal strength measurement;
Adjacent area data structure (59) makes up device, be arranged to use at least a portion of described system information to make up the adjacent area data structure (59) of the information that comprises neighbor cell, described adjacent area data structure (59) makes up device and is arranged in the described cell identification information that comprises institute's detected cells in the described adjacent area data structure (59) and the described signal strength measurement of each sub-district in the described adjacent area data structure (59).
11. device as claimed in claim 10, wherein, described resident radio receiver (54) also is arranged for the preemption macrocell, and is used for obtaining:
(1) cell identity of the macrocell that is preempted and signal strength measurement;
(2) system information block in the macrocell that is preempted is used to obtain the information relevant with at least one neighbor cell; And
Wherein, described adjacent area data structure (59) structure device also is arranged to use (1) and (2) to make up adjacent area data structure (59).
12. device as claimed in claim 11 also comprises: list manager (57), be arranged to use described nano-micro-radio base stations (28 Fj) adjacent area data structure (59) make up described neighbor data structure (59) that device makes up as sending to by described nano-micro-radio base stations (28 Fj) the described Neighboring Cell List of the user equipment unit (30) of service is provided.
13. a radio access network comprises:
A kind of nano-micro-radio base stations (28 Fj), comprising:
Resident radio receiver (54) is arranged for the system information of broadcasting in the acquisition radio access network;
At least a portion of using described system information is at described nano-micro-radio base stations (28 Fj) the last parts that make up the adjacent area data structure (59) of the information that comprises neighbor cell;
Away from described nano-micro-radio base stations (28 Fj), be arranged to use described adjacent area data structure (59) to make up the node (26,100) of Neighboring Cell List.
14. device as claimed in claim 13, wherein, the described node of being arranged to use described adjacent area data structure (59) to make up Neighboring Cell List comprises radio network controller node (26).
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CN101278579B (en) 2013-10-16

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