WO2016086624A1 - Procédé et appareil de détermination d'une cellule cible - Google Patents

Procédé et appareil de détermination d'une cellule cible Download PDF

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Publication number
WO2016086624A1
WO2016086624A1 PCT/CN2015/079849 CN2015079849W WO2016086624A1 WO 2016086624 A1 WO2016086624 A1 WO 2016086624A1 CN 2015079849 W CN2015079849 W CN 2015079849W WO 2016086624 A1 WO2016086624 A1 WO 2016086624A1
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WIPO (PCT)
Prior art keywords
target cell
capability information
lipa
handover
determining
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PCT/CN2015/079849
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English (en)
Chinese (zh)
Inventor
刘磊
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中兴通讯股份有限公司
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Publication date
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Publication of WO2016086624A1 publication Critical patent/WO2016086624A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H04W36/125—Reselecting a serving backbone network switching or routing node involving different types of service backbones

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for determining a target cell.
  • LIP Local Internet Protocol Access
  • HeNB Home evolved NodeB
  • LGW Local Gateway
  • the HeNB and the LGW may be separate physical entities, and the LIPA connection is supported in the local home base station network (Local HeNB Network, LHN for short).
  • LHN Local HeNB Network
  • An LHN is composed of a group of HeNBs, which can obtain an Internet Protocol (IP) connection of a local network through one or more LGWs.
  • IP Internet Protocol
  • An HeNB can belong to only one LHN; one LGW can only belong to one LHN; when the UE moves between HeNBs under the same LHN, the continuity of the LIPA connection needs to be supported. In this case, the LGW of the LIPA connection is not changed.
  • the UE when the UE satisfies the handover condition in the LIPA network, there is no good way to indicate how the source side HeNB selects a suitable target cell for handover, that is, if the UE holds the LIPA bearer, the target cell after handover
  • the LIPA bearer of the UE can be maintained, but the handover request message is sent to the mobility management entity (Mobile Management Entity, MME for short) or the HeNB GW to perform access control during handover. If it is an X2 link, the message is also It can only be sent directly to the target base station, and the target base station performs admission control. This will increase resource consumption and signaling overhead, and also reduce the speed of UE handover.
  • MME Mobile Management Entity
  • the embodiments of the present invention provide a method and a device for determining a target cell, so as to at least solve the problem that the determination of the target cell in the related art causes the handover to be inefficient.
  • a method for determining a target cell includes: acquiring service capability information for determining a target cell, where the service capability information includes local network protocol access LIPA capability information; The LIPA capability information determines the target cell for handover.
  • acquiring the service capability information of the neighboring cell for determining the target cell includes: scanning the broadcast information by embedding the user UE data card and/or the chip; according to the scanned broadcast information collection Business capability information.
  • determining the target cell for handover according to the LIPA capability information includes: determining whether there is a handover priority list; and if the determination result is yes, according to the handover priority list, and the The LIPA capability information determines a target cell for handover.
  • determining the target cell for handover according to the handover priority list and the LIPA capability information includes: determining that a cell with a high priority is the target cell when the LIPA capability is supported.
  • the method further includes: switching to the determined target cell.
  • the LIPA capability information includes at least one of the following: an identifier of a local network where the neighboring base station is located, an identifier of the local gateway LGW to which the neighboring base station is connected, and an address of the LGW to which the neighboring base station is connected.
  • a target cell determining apparatus including: an acquiring module, configured to acquire service capability information for determining a target cell, where the service capability information includes local internet protocol access The LIPA capability information; a determining module configured to determine a target cell for handover according to the LIPA capability information.
  • the acquiring module includes: a scanning unit configured to scan to broadcast information by embedding a user UE data card and/or a chip; and a collecting unit configured to collect, according to the scanned information collection device Business capability information.
  • the determining module includes: a determining unit, configured to determine whether there is a switching priority list; and a determining unit, configured to: according to the switching priority list, and the The LIPA capability information determines the target cell for handover.
  • the apparatus further includes: a switching module, configured to switch to the determined target cell.
  • the service capability information for determining the target cell is obtained, where the service capability information includes local network protocol access LIPA capability information, and the target cell for handover is determined according to the LIPA capability information.
  • the determination of the target cell in the related art causes the problem of low handover efficiency, thereby achieving the effect of improving handover efficiency.
  • FIG. 1 is a flowchart of a method for determining a target cell according to an embodiment of the present invention
  • FIG. 2 is a block diagram of a target cell determining apparatus according to an embodiment of the present invention.
  • FIG. 3 is a block diagram 1 of a target cell determining apparatus according to a preferred embodiment of the present invention.
  • FIG. 4 is a block diagram 2 of a target cell determining apparatus according to a preferred embodiment of the present invention.
  • FIG. 5 is a block diagram 3 of a target cell determining apparatus in accordance with a preferred embodiment of the present invention.
  • FIG. 6 is a schematic diagram of collecting neighboring area LIPA capability information according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a method for selecting a target cell supporting a LIPA bearer according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of an apparatus for collecting neighboring area LIPA capability information according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an apparatus for selecting a target cell during handover in a LIPA network according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for determining a target cell according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:
  • Step S102 Obtain service capability information for determining a target cell, where the service capability information includes local network protocol access LIPA capability information;
  • Step S104 determining a target cell for handover according to the LIPA capability information.
  • the service capability information for determining the target cell is obtained by the foregoing steps, where the service capability information includes local network protocol access LIPA capability information, and the target cell used for handover is determined according to the LIPA capability information, and the target in the related technology is solved.
  • the determination of the cell results in a low efficiency of handover, and the cell handover is performed according to the determined target cell, thereby achieving the effect of improving handover efficiency.
  • the method may include: scanning the broadcast information by embedding the user UE data card and/or the chip, according to The scanned broadcast information collects the service capability information, so that the existing protocol does not need to be modified, and the operability is strong.
  • the method for determining the target cell for the handover according to the LIPA capability information is various.
  • the method may include: determining whether there is a handover priority list; and if the determination result is yes, according to the handover priority The level list, and the LIPA capability information determines the target cell for handover.
  • Determining the target cell for handover according to the handover priority list and the LIPA capability information may include: determining a cell with a high priority as the target cell when the LIPA capability is supported.
  • handover to the determined target cell improves the handover efficiency.
  • the foregoing LIPA capability information may include at least one of the following: an identifier of a local network where the neighboring base station is located, an identifier of the local gateway LGW to which the neighboring base station is connected, and an address of the LGW to which the neighboring base station is connected.
  • the embodiment of the present invention further provides a target cell determining apparatus, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 2 is a block diagram of a target cell determining apparatus according to an embodiment of the present invention. As shown in FIG. 2, the method includes: an obtaining module 22 and a determining module 24. The following briefly describes each module.
  • the obtaining module 22 is configured to obtain service capability information for determining a target cell, where the service capability information includes local internet protocol access LIPA capability information;
  • the determining module 24 is configured to determine a target cell for handover according to the LIPA capability information.
  • FIG. 3 is a block diagram of a target cell determining apparatus according to a preferred embodiment of the present invention.
  • the acquiring module 22 includes:
  • the scanning unit 32 is configured to scan to the broadcast information by embedding the user UE data card and/or the chip;
  • the collecting unit 34 is configured to collect the service capability information according to the scanned broadcast information.
  • the determining module 24 includes:
  • the determining unit 42 is configured to determine whether there is a switching priority list
  • the determining unit 44 is configured to determine, in the case of the determination result, that the target cell for handover is determined according to the handover priority list and the LIPA capability information.
  • FIG. 5 is a block diagram 3 of a target cell determining apparatus according to a preferred embodiment of the present invention. As shown in FIG. 5, the apparatus further includes:
  • the switching module 52 is configured to switch to the determined target cell.
  • the appropriate target cell is selected by some method, so that the LIPA bearer continues to be maintained after the UE switches to the target cell.
  • the present invention provides a method and apparatus for acquiring neighboring LIPA capability information in a LIPA network and selecting a target cell during handover, so that the source side HeNB quickly selects when the UE satisfies the handover condition and holds the LIPA bearer.
  • the best target base station is obtained, so that the UE switches to the target cell early and continues to receive high quality services.
  • the source side HeNB obtains the service capability information of the neighboring base station, including the LIPA capability information, by using a sniffer or other similar sniffing function.
  • the specific acquisition mode is as follows: the source side HeNB is embedded with the UE data card or the chip.
  • the UE may notify the UE of the data card or the chip to scan, and may scan the broadcast information of the neighboring base station, and the scan result.
  • the source side HeNB is fed back to the source side HeNB, so that the source side HeNB collects the service capability information of the neighboring base station, which also includes the LIPA capability information (the identity of the local network where the neighboring base station is located, the identity of the LGW to which the neighboring base station is connected, and the neighboring At least one of the addresses of the LGWs to which the base station is connected; the source-side HeNB selects an optimal target cell for handover based on the LIPA support capability information of the neighboring cells when determining that the UE satisfies the handover condition.
  • LIPA capability information the identity of the local network where the neighboring base station is located, the identity of the LGW to which the neighboring base station is connected, and the neighboring At least one of the addresses of the LGWs to which the base station is connected
  • the neighboring cell first supports the LIPA capability to continue filtering, and then the filtered neighboring cell passes several indicators. (signal strength, load information, CSG information, handover success history information, etc.) are sorted, and the cell with the highest ranking score is selected as the handover target;
  • a priori information ie a neighbor priority list. Then, it is directly searched in the list to find whether the neighboring cell supports the LIPA capability, and the first cell that is found is used as the handover target.
  • the present invention provides an apparatus for acquiring neighboring area LIPA capability information and selecting a target cell during handover in a LIPA network, including: a collection module and a selection module, the functions of which are obtained by the obtaining module 22, the determining module 24, and the switching module 52. Together, the following is a brief description of each module.
  • the collection module, the HeNB can obtain the service capability information of the neighboring base station, including the LIPA support capability information, by using a sniffer or a similar sniffing function on the wireless side air interface;
  • the selection module when the source side HeNB determines that the UE holds the LIPA bearer and currently meets the handover condition, is based on a target cell selection algorithm (considering factors include: signal quality, load capacity, CSG information, handover success rate history information, LIPA of the neighboring cell) Support capability information, etc.) Select the best target cell and then initiate the handover.
  • a target cell selection algorithm considering factors include: signal quality, load capacity, CSG information, handover success rate history information, LIPA of the neighboring cell) Support capability information, etc.
  • the source side HeNB Based on the existing LIPA mobility proposal, the source side HeNB obtains the LIPA support capability information of the neighboring cell, and the source side HeNB determines that the UE supports the LIPA bearer and meets the handover condition, based on the LIPA support capability of the neighboring cell. The information directly selects the best target cell, so that the UE quickly switches to the target cell and continues to maintain the LIPA bearer.
  • the optional embodiment can be applied to various communication systems, such as: General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, and LTE frequency division duplex (Frequency).
  • Division Duplex referred to as FDD
  • LTE Time Division Duplex LTE Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile communication
  • a user equipment may be referred to as a terminal (Mobile), a mobile station (Mobile Station, MS for short), a mobile terminal (Mobile Terminal), etc., and the UE may pass through a radio access network (Radio Access Network).
  • RAN Radio Access Network
  • the UE can be a mobile phone, having Mobile terminal computers, portable/portable/handheld/computer built-in/vehicle mobile devices that exchange voice and/or data with a wireless access network.
  • the apparatus for processing the LIPA mobility bearer may be an evolved base station (Evolutional Node B, referred to as ENB or e-NodeB) in LTE, or may be a base station (NodeB, NB for short) in WCDMA, or may be GSM or CDMA.
  • ENB Evolutional Node B
  • NodeB NodeB
  • NB base station
  • the base station (Base Transceiver Station, abbreviated as BTS) is not limited to this embodiment of the present invention.
  • the present optional embodiment can be applied to a heterogeneous network, and the home base station HeNB can be a macro base station in a macro cell or a micro base station in a micro cell.
  • the home base station HeNB and the user equipment UE will be described as an example.
  • a method for obtaining neighboring area LIPA capability information and target cell selection at handover in a LIPA network including:
  • the neighboring area LIPA capability information is obtained, and the source side HeNB obtains the service capability information of the neighboring base station, including the LIPA capability information, by using a sniffer or other similar sniffing function.
  • the specific acquisition mode is as follows: the source side HeNB is embedded with the UE data card or the chip.
  • the UE may notify the UE of the data card or the chip to scan, and may scan the broadcast information of the neighboring base station, and the scan result.
  • the source side HeNB is fed back to the source side HeNB, so that the source side HeNB collects the service capability information of the neighboring base station, which also includes the LIPA capability information (the identity of the local network where the neighboring base station is located, the identity of the LGW to which the neighboring base station is connected, and the neighboring At least one of the addresses of the LGWs to which the base station is connected; the source side HeNB selects an optimal target cell for handover based on the LIPA support capability information of the neighboring cells when determining that the UE satisfies the handover condition.
  • LIPA capability information the identity of the local network where the neighboring base station is located, the identity of the LGW to which the neighboring base station is connected, and the neighboring At least one of the addresses of the LGWs to which the base station is connected
  • FIG. 6 is a schematic diagram of collecting neighboring area LIPA capability information according to an embodiment of the present invention. As shown in FIG. 6, the method for collecting neighboring area LIPA capability information includes:
  • the source side HeNB obtains the service capability information of the neighboring base station, including the LIPA capability information, by using a sniffer or other similar sniffing function.
  • the LIPA support capability information of the neighboring base station is at least one of an identifier of the local network where the neighboring base station is located, an identifier of the LGW to which the neighboring base station is connected, and an address of the LGW to which the neighboring base station is connected.
  • the source side HeNB obtains at least one of the information, indicating that the neighboring cell base station supports LIPA. If the neighbor does not support LIPA, one or more of these messages will not be broadcast or passed to the requesting base station via the interface.
  • Step S602 the source side HeNB needs to collect the service capability information of the neighboring area, including the LIPA capability information.
  • Step S604 the source side HeNB notifies the UE data card or chip embedded in itself to perform sniffer scanning, that is, collects broadcast information of the neighboring area (the neighboring area broadcast information contains required service capability information);
  • Step S606 After the UE data card or the chip on the source side HeNB scans the neighboring area information, the result is fed back to the source side HeNB.
  • FIG. 7 is a schematic flowchart of a method for selecting a target cell supporting a LIPA bearer according to an embodiment of the present invention. As shown in FIG. 7, the method for selecting a target cell supporting a LIPA bearer includes the following steps:
  • step 702 when the UE has satisfied the handover condition, the HeNB determines that the LIPA bearer has been activated, and the source side HeNB determines whether the UE satisfies the handover condition, and needs to see whether the UE holds the LIPA bearer, and when the UE accesses or the ERAB dynamically establishes
  • the LIPA bearer information is included in the context, so the source side HeNB can determine the information.
  • step S704 it is determined whether there is a neighboring priority list, and the source side HeNB determines whether there is a neighboring priority a priori information (that is, the neighboring priority list exists). If the determination result is yes, step S706 is performed. If the determination result is negative, step S710 is performed.
  • step S706 it is determined whether there is a neighboring area supporting the LIPA capability. In the case that the neighboring area priority list already exists, the neighboring area candidate list is sequentially searched to see if there is a neighboring area supporting the LIPA capability, and the judgment result is yes. In the case of step S708, if the result of the determination is no, step S716 is performed;
  • Step S708 selecting the first target cell that is found as the handover through the above sequential search process, and if the neighboring cell supporting the LIPA capability is found, selecting it as the target cell of the handover;
  • step S710 if there is no neighboring priority a priori information (that is, a neighboring priority list exists), filtering is performed by detecting whether the neighboring cell supports the LIPA capability.
  • step S712 it is determined whether there is a valid neighboring cell in the filtered neighboring cell list, and whether there is a valid neighboring cell in the filtered neighboring cell list. If the determination result is yes, step S714 is performed, and the determination result is no. In the case, step S716 is performed;
  • Step S714 A valid neighboring cell exists in the filtered neighboring cell list, and the filtered neighboring cell is sorted by several indicators (signal strength, load information, CSG information, handover success rate history information, etc.), and the highest ranking score is selected.
  • the cell serves as a handover target;
  • step S716 the LIPA bearer is released, and the LIPA-capable neighboring area is not found, indicating that the LIPA bearer is not sustainable after the handover, so the bearer processing module needs to be handed over here, and the LIPA bearer is released.
  • FIG. 8 is a schematic diagram of an apparatus for collecting neighboring area LIPA capability information according to an embodiment of the present invention.
  • the apparatus for collecting neighboring area service capability information (including LIPA capability information) in a LIPA network includes:
  • the source side HeNB when the source side HeNB wants to obtain the neighboring area service capability information, it will notify the UE data card or chip to obtain, and after the UE data card or chip obtains the neighboring area service capability information, the information will be returned to the neighboring area.
  • the LIPA capability collection module is stored in the neighboring area service capability collection module.
  • the UE data card or chip After receiving the indication from the source-side HeNB neighboring area LIPA capability collection module, the UE data card or chip obtains the broadcast information of the neighboring area (the broadcast information includes required service capability information, including LIPA capability information). After obtaining the neighboring service capability information, the information is fed back to the neighboring area LIPA capability collection module.
  • FIG. 9 is a schematic diagram of an apparatus for selecting a target cell during handover in a LIPA network according to an embodiment of the present invention.
  • a device for selecting a neighboring cell in a LIPA network includes two modules, and each module is described below.
  • the neighboring service capability collection module 92 collects service capability information of the neighboring area, including LIPA capability information.
  • the target cell selection module 94 obtains the LIPA capability information of the neighboring cell from the neighboring cell service capability collection module, and obtains the best target cell according to the neighboring cell selection algorithm.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above embodiments and the preferred embodiments solve the problem that the determination of the target cell in the related art causes the handover to be inefficient, thereby achieving the effect of improving the handover efficiency.

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

Abstract

La présente invention concerne un procédé et un appareil de détermination d'une cellule cible. Le procédé comprend les étapes consistant à : obtenir des informations sur une capacité de service utilisées pour déterminer une cellule cible, les informations sur la capacité de service contenant des informations sur la capacité d'accès au protocole Internet de localisation (LIPA); et déterminer une cellule cible pour une commutation en fonction des informations sur la capacité LIPA. La présente invention permet de régler le problème de l'art connexe selon lequel l'efficacité de commutation est faible à cause de la détermination de la cellule cible et, par conséquent, d'obtenir un effet d'amélioration de l'efficacité de commutation.
PCT/CN2015/079849 2014-12-05 2015-05-26 Procédé et appareil de détermination d'une cellule cible WO2016086624A1 (fr)

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CN201410736362.7 2014-12-05
CN201410736362.7A CN105722156A (zh) 2014-12-05 2014-12-05 目标小区确定方法及装置

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102202364A (zh) * 2011-06-08 2011-09-28 电信科学技术研究院 一种进行lipa承载接入控制的方法、系统和设备
CN102340844A (zh) * 2010-07-15 2012-02-01 华为终端有限公司 切换过程中确定目标基站的方法、ue及mme
CN103155685A (zh) * 2011-07-05 2013-06-12 联发科技股份有限公司 指示本地网际协议接入支持的系统和方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340844A (zh) * 2010-07-15 2012-02-01 华为终端有限公司 切换过程中确定目标基站的方法、ue及mme
CN102202364A (zh) * 2011-06-08 2011-09-28 电信科学技术研究院 一种进行lipa承载接入控制的方法、系统和设备
CN103155685A (zh) * 2011-07-05 2013-06-12 联发科技股份有限公司 指示本地网际协议接入支持的系统和方法

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