WO2014008634A1 - 小区标识的冲突检测方法和冲突检测装置 - Google Patents

小区标识的冲突检测方法和冲突检测装置 Download PDF

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Publication number
WO2014008634A1
WO2014008634A1 PCT/CN2012/078438 CN2012078438W WO2014008634A1 WO 2014008634 A1 WO2014008634 A1 WO 2014008634A1 CN 2012078438 W CN2012078438 W CN 2012078438W WO 2014008634 A1 WO2014008634 A1 WO 2014008634A1
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Prior art keywords
cell
user equipment
cells
time point
last
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PCT/CN2012/078438
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English (en)
French (fr)
Inventor
陈雄飞
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP12880744.3A priority Critical patent/EP2874427B1/en
Priority to PCT/CN2012/078438 priority patent/WO2014008634A1/zh
Priority to KR1020157001308A priority patent/KR101670375B1/ko
Priority to CN201280028285.9A priority patent/CN103703819B/zh
Publication of WO2014008634A1 publication Critical patent/WO2014008634A1/zh
Priority to US14/585,965 priority patent/US9480009B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup

Definitions

  • Embodiments of the present invention relate to the field of wireless communications, and more particularly, to a collision detection method and a collision detection apparatus for cell identification. Background technique
  • a radio access network is typically composed of multiple cells of multiple base stations. Each cell needs a unique "cell identity" in the air interface for identification by the UE (User Equipment). For example, GSM (Global System of Mobile Communication) allocates a BSIC (Base Station Identity Code) for each cell, and each cell in the UMTS (Universal Mobile Telecommunications System) is configured. PSC (Primary Scrambling Code), each cell in the LTE is configured with a Physical Cell Identity (PC), which is an air interface used to identify the "cell identity" of the cell. In mobility management, the target cell selection for handover is performed by this "cell identity".
  • PC Physical Cell Identity
  • Neighboring cells need to be configured with different cell IDs. Otherwise, the downlink interference will be aggravated and the switching will be affected. In severe cases, the call will be dropped.
  • the number of cell identifiers is usually limited. For example, there are only 512 PSCs in UMTS and only 504 PCIs in LTE. When the number of cells is large, the cell identifier needs to be reused, that is, the same cell identifier is used for multiple cells, but the cells with the same cell identity need to be isolated as much as possible during network planning to avoid cell identity conflicts when they are adjacent. .
  • the cell information reported by the UE (for example, the measurement report, or the target cell in the handover signaling) is compared with the configured neighbor list to obtain a possible cell identity conflict.
  • the method depends on the cell information and the neighboring cell list reported by the UE. If the neighboring cell list of the two cells using the same cell identity does not intersect or the UE does not trigger the cell information reporting operation, the cell identity conflict detection cannot be performed. Summary of the invention
  • Embodiments of the present invention provide a cell identity conflict detection method and a conflict detection apparatus, which are capable of The cell identity conflict is detected without relying on the neighboring cell list and the cell information reporting operation of the user equipment.
  • a method for detecting a cell identity conflict including: determining that a user equipment accesses a first cell at a first time point T1 or performs connection establishment or connection reestablishment in a first cell; Whether the other cell has the interaction information related to the user equipment in the vicinity of the first time point T1, the interaction information is used to record the last contact information between the user equipment and other cells; When there is interaction information related to the user equipment near a time point T1, cell identity collision detection is performed on the first cell and the second cell.
  • a collision detection apparatus for a cell identifier including: a determining unit, configured to determine that a user equipment accesses a first cell at a first time point T1 or performs connection establishment or connection reestablishment in a first cell; a unit, configured to search for, in the vicinity of the first time point T1, the interaction information related to the user equipment, and the interaction information is used to record the last contact information between the user equipment and other cells; And a unit, configured to perform cell identity conflict detection on the first cell and the second cell when the search unit searches for the second cell in the other cell to have the interaction information related to the user equipment in the vicinity of the first time point T1.
  • the embodiment of the present invention searches for whether the user equipment has interaction information in other cells near the time point of access, connection establishment, or connection reestablishment of a cell, and performs cell identity conflict detection on the cell and other cells that have searched for the interaction information.
  • the cell information reporting operation of the neighboring cell list and the user equipment is not relied on, thereby improving the detection efficiency of the cell identity conflict.
  • FIG. 1 is a schematic diagram of a cell identity conflict scenario in which an embodiment of the present invention is applicable.
  • FIG. 2 is a flow chart of a method for detecting a cell identity conflict according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a cell identity conflict detection process according to another embodiment of the present invention.
  • 4 is a block diagram of a cell identity collision detecting apparatus according to an embodiment of the present invention. detailed description
  • the technical solution of the present invention can be applied to various communication systems, for example: GSM, Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), general packet Wireless Service (GPRS, General Packet Radio Service), Long Term Evolution (LTE), etc.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • a user equipment which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
  • the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle,
  • the wireless access network exchanges languages and/or data.
  • FIG. 1 is a schematic diagram of a cell identity conflict scenario in which an embodiment of the present invention is applicable.
  • FIG. 1 is a schematic diagram of a cell identity conflict scenario in which an embodiment of the present invention is applicable.
  • the two cells A and B in which the cell identity conflict occurs are shown in FIG. 1, but the number of cells in which the cell identity conflict occurs is not limited in the embodiment of the present invention.
  • Embodiments of the invention may be similarly applied to more cells.
  • Embodiments of the present invention can be used to detect any cell eight and: 8 in which a "cell identity" collision occurs.
  • cell B of Figure 1 contains shaded areas, and the dashed box schematically represents a partial neighborhood of cell A or B.
  • the following coverage and same coverage scenarios may be formed: A and B cells have the same cell identity; usually, the physical distance between the A and B cells is relatively long; in addition, the neighbor list of A and the neighbor list of B may not have Intersection; Moreover, A and B cells have overlapping coverage areas, as shown in the shaded area of FIG. 1, UEs in this area are more prone to handover failure or dropped calls. In this scenario, the handover failure or the dropped call caused by the cell identity conflict is very concealed, and it is difficult to locate such a cell identity conflict problem in the prior art.
  • the cell identity conflict detection is performed according to the manner in which the UE triggers the measurement report and the neighboring cell list
  • the existing technology cannot be used to associate through the third-party cell.
  • the A and B cells are close to each other or there is a cell identity conflict; on the other hand, when the UE does not trigger the measurement report, the error block may be transmitted due to interference, and the call is dropped when it is severe.
  • the severity of the consequences that may be generated by the scenario described above is related to the relative signal strength of each cell in the same coverage area of the A and B cells. If there is no dominant cell in the same coverage area and the interference is severe, a dropped call may occur. If there is a dominant cell in the same coverage area, it will affect the user throughput rate and affect the cell capacity.
  • FIG. 2 is a flow chart of a method for detecting a cell identity conflict according to an embodiment of the present invention.
  • the method of Figure 2 may be performed by any suitable means, such as by a network element such as a base station, base station controller or network side server, or by a processing device independent of the communication network.
  • the user equipment When the user equipment attempts to access, perform connection establishment or connection reestablishment, it sends corresponding signaling.
  • the time point corresponding to the signaling may be recorded, for example, a time point at which the network side device (such as a base station, a base station controller, etc.) receives the signaling, as the first time point T1.
  • the time point near the first time point T1 means that the time value separated from T1 is less than or equal to the predetermined threshold value, that is, it should satisfy D-! ! ⁇ Ding + ⁇ .
  • the predetermined threshold values 1 and 1 are non-negative numbers, and the two may be equal or unequal.
  • the predetermined threshold can be set according to one or more factors. For example, the predetermined threshold may be related to the moving speed of the UE in the cell. If there are more UEs moving at high speed in the cell, the predetermined threshold may be set smaller to make it impossible for the high-speed UE to be at the predetermined gate.
  • the time limit spans one cell, and is generally greater than one.
  • the predetermined threshold may be related to a cell coverage radius. If the cell coverage radius is small, the predetermined threshold may be set to be smaller to make it impossible for the UE to span within the predetermined threshold period. One district.
  • the predetermined threshold may be related to the distance between the two cells. If the cell distance is relatively close, the predetermined threshold may be set to be smaller to make the UE impossible to be in the predetermined threshold. The coverage from one cell to the coverage of another cell. Embodiments of the invention are not limited to the above. Alternatively, the setting of the predetermined threshold may also consider the clock skew between the two network side devices.
  • the predetermined threshold value of the embodiment of the present invention is generally on the order of minutes, for example, 2 minutes or less.
  • the “cell identifier” in the embodiment of the present invention is an identifier that is configured to the cell for the user equipment to identify the cell when performing network planning, and the same “cell identifier” may be used for multiple cells.
  • it may be a BSIC in GSM, a PSC in UMTS, or a PCI in an LTE system.
  • the embodiment of the present invention searches for whether the user equipment has interaction information in other cells near the time point of access, connection establishment, or connection reestablishment of a cell, and performs cell identity conflict detection on the cell and other cells that have searched for the interaction information.
  • the cell information reporting operation of the neighboring cell list and the user equipment is not relied on, thereby improving the detection efficiency of the cell identity conflict.
  • the method of Figure 2 can be performed in real time, for example by a network element such as a base station, a base station controller or a network side server, during communication of the user equipment.
  • the method of Figure 2 may be performed in non-real time, e.g., after collecting interaction information for each cell over a period of time, by a processing device independent of the communication network.
  • the embodiment of the present invention does not limit the execution subject and execution manner of the method of FIG. 2.
  • the distances between cells A and B are relatively far.
  • a UE is less likely to move from the planned cell A coverage to the planned cell B coverage within a predetermined threshold time. If the same UE is associated with the air interface interactions of cells A and B (for example, there is continuity or overlap in the interaction), the cells A and B should be neighboring cells, or have the same coverage area.
  • the embodiment of the present invention first determines that the same UE has an association between two cells A and B at the same time or a short time interval, thereby determining whether to trigger the cell identity conflict detection processing, so that the UE does not need to rely on the measurement report and the neighbor list of the UE.
  • the cell identification conflict detection process may be triggered according to an embodiment of the present invention, thereby improving detection efficiency.
  • FIG. 3 is a schematic flow chart of a cell identity conflict detection process according to another embodiment of the present invention.
  • the first cell is the cell A shown in FIG. 1
  • the second cell is the cell B shown in FIG. 1, but the embodiment of the present invention does not limit this.
  • the first cell A is at a first time point T1, and a UE attempts to access or perform connection establishment or connection reestablishment.
  • the network side device of the first cell A receives the UE to try to access at T1.
  • Related signaling such as RRC (Radio Resource Control) CONNECT REQ (RRC Connection Request) message in UMTS.
  • the network side device of the first cell A receives the relevant signaling of the UE attempting to restore the original signaling connection at T1, such as CELL UPDATE message in UMTS or RRC RE-ESTABLISHMENT REQ in LTE (RRC reconstruction) Request) message, etc.
  • the UE identifier or the signaling connection identifier corresponding to the related signaling of re-accessing or attempting to restore the original signaling connection may be set to "RETRY-OR-RECON-UE-ID"
  • UE identifier may include but It is not limited to TMSI (Temporary Mobile Subscriber Identity), IMSI (International Mobile Subscriber Identity), IMEI (International Mobile Equipment Identity), etc.
  • signaling connection identifier may include but not It is limited to RNTI (Radio Network Temporary Identifier), link identifier, and the like.
  • the foregoing last contact information includes a last signaling or data that is exchanged between the UE and other cells, and a second time point T2 corresponding to the last signaling or data (for example, a network side device) The point in time at which the last signal or data was received).
  • T1- ⁇ ⁇ ⁇ 2 ⁇ ⁇ 1 + ⁇ ⁇ 2 it may be determined that the cell corresponding to the interaction information is the second cell, where ⁇ ⁇ 1 and ⁇ ⁇ 2 are predetermined threshold values.
  • ⁇ ⁇ 1 and ⁇ ⁇ 2 are predetermined threshold values.
  • ⁇ ⁇ 1 and ⁇ ⁇ 2 may or may not be equal.
  • the setting of ⁇ ⁇ 1 and ⁇ ⁇ 2 may take into account one or more factors, which are not limited in the embodiment of the present invention.
  • ⁇ ⁇ 1 and ⁇ ⁇ 2 may take into account the clock skew of the two network side devices, etc.
  • ⁇ ⁇ 1 or ⁇ ⁇ 2 may also consider other factors, such as the maximum time required for the user equipment to move between the two cells, etc. .
  • the last signaling or data herein may include at least one of the following: last uplink signaling or uplink data, last uplink SINR (Signal to Interference plus Noise Ratio) or RSRP (Reference) Signal Receiving Power, reference signal received power), the last HARQ (Hybrid Automatic Repeat Request) feedback.
  • the last uplink data may be the correct or incorrect uplink data of the last CRC (Cyclic Redundancy Check), which is not limited in this embodiment of the present invention.
  • the foregoing last signaling may be effective signaling or invalid signaling, which is not limited by the embodiment of the present invention.
  • the last contact information recorded in the interaction information may include the
  • the third time point T3 of the RRC connection release between the UE and other cells At this time, if it meets ⁇ 3-
  • ⁇ ⁇ 3 ⁇ ⁇ ⁇ 3+ ⁇ ⁇ 4 then it can be determined that the cell corresponding to the interaction information is the second cell, where ⁇ ⁇ 3 and ⁇ ⁇ 4 are predetermined threshold values. ⁇ ⁇ 3 and ⁇ ⁇ 4 may or may not be equal. The setting of ⁇ ⁇ 3 and ⁇ ⁇ 4 may take one or more factors into consideration, which is not limited in the embodiment of the present invention.
  • ⁇ ⁇ 3 and ⁇ ⁇ 4 may take into account the clock skew of the two network side devices, etc., in addition, ⁇ ⁇ 3 or ⁇ ⁇ 4 may also consider other factors, such as the maximum time required for the user equipment to move between the two cells, The delay in releasing the user in the specific implementation of the network side, and the like.
  • the last contact information recorded in the interaction information may further include a UE identifier (device identifier or user identifier) or a signaling connection identifier, such as a TMSI, an IMSL IMEI, an RNTI, or a link identifier, etc., to be set in step 301. "RETRY-OR-RECON-UE-ID" for comparison.
  • the last contact information may also include an identification of the RRC connection between the UE and other cells.
  • Examples of the identifier of the RRC connection include, but are not limited to, C-RNTK Cell RNTI in LTE, Cell RNTI) or S1-AP ID (SI Application Protocol Identifier;), U-RNTI in WCDMA (Universal RNTI;
  • the RN connection identifier is not limited in the embodiment of the present invention.
  • step 302 If the matching information is not detected in step 302, for example, although the interaction information of the UE exists in other cells, the corresponding time point of the interaction information is not near T1, or although other cells have interaction information of other user equipments, The identity of these user equipments is not "RETRY-OR-RECON-UE-ID", then it is determined that there is no cell identity conflict, and the processing is performed according to the normal process.
  • the UE may be the initial access, or the connection establishment or connection re-establishment process of the UE is caused by the non-cell identity conflict.
  • the identification information of the cell A may be recorded in the interaction information, including but not limited to the Evolved-Universal Terrestrial Radio Access Network (Cell Global Identifier), for the cell identification conflict detection of other cells. It is used to determine that the interaction information belongs to the cell A, and subsequently acquires information such as a frequency point and a cell identity through the ECGI when detecting whether the cell identity conflicts.
  • Cell Global Identifier Evolved-Universal Terrestrial Radio Access Network
  • step 302 search for the matching interaction information, and assume the searched interaction letter.
  • the cell corresponding to the interest is the second cell B.
  • the cell B may be determined by the ECGI of the cell B recorded in the interaction information, and information such as the frequency point and the cell identifier of the cell B may be acquired.
  • Step 306 determine whether the frequency points of the A and B cells are the same.
  • the frequency of the cell is generally the central frequency configuration of the cell, but the embodiment of the present invention does not limit this. If the frequency of the A and B cells is different, it may be a normal network planning scenario, because the inter-frequency cell can allow the same identity to be configured. At this point, go to steps 303 and 304 and proceed according to the normal process. Step 306 is an optional step.
  • step 306 If it is found in step 306 that the frequency points of the A and B cells are the same, it is determined whether the cell identifiers (such as BSIC, PSC, or PCI) of the A and B cells are the same. If the cell identifiers of the A and B cells are different, it is determined that there is no cell identity conflict between the A and B cells, and the process proceeds to steps 303 and 304, and the process is performed according to the normal process.
  • cell identifiers such as BSIC, PSC, or PCI
  • the cell identity conflict detection can be performed without relying on the cell information reported by the UE and the neighbor cell list.
  • the embodiment of the present invention is capable of detecting the cell identity conflict of the coverage and the same coverage scenario described above with reference to FIG. 1, and it is difficult to perform cell identity conflict detection in such a scenario in the prior art.
  • the conflict detection apparatus 40 of Fig. 4 can be implemented by any suitable means, for example, by a network element such as a base station, a base station controller or a network side server, or can be implemented by a processing apparatus independent of the communication network.
  • the collision detecting means 40 includes a determining unit 41, a searching unit 42, and a detecting unit 43.
  • the determining unit 41 determines that the user equipment accesses the first cell or performs connection establishment or connection reestablishment in the first cell at the first time point T1.
  • the search unit 42 searches for the interaction information related to the user equipment in the vicinity of the first time point T1 determined by the determining unit 42, and the interaction information is used to record the user equipment and other cells. Last contact information.
  • the detecting unit 43 performs a cell identity collision detection on the first cell and the second cell when the search unit 42 searches for the second cell in the other cell to have the interaction information related to the user equipment near the first time point T1.
  • the embodiment of the present invention searches for whether the user equipment has interaction information in other cells near the time point of access, connection establishment, or connection reestablishment of a cell, and performs cell identity conflict detection on the cell and other cells that have searched for the interaction information. Not dependent on the neighbor list and the small size of the user device The area information reporting operation improves the detection efficiency of the cell identity conflict.
  • the various components of the conflict detection device 40 may implement the corresponding steps of the method described in Figures 2 and 3, and will not be described in detail to avoid redundancy.
  • the last contact information may include last signaling or data exchanged between the user equipment and other cells, and a second time point T2 corresponding to the last signaling or data.
  • the searching unit 42 may determine that the cell corresponding to the interaction information is the second cell, where ⁇ T1 and ⁇ ⁇ 2 are predetermined threshold values.
  • the last piece of signaling or data includes at least one of the following: last uplink signaling or uplink data, last uplink SINR or RSRP data exceeding a threshold, and last HARQ feedback information.
  • the last contact information may include a third time point ⁇ 3 of the RRC connection release between the user equipment and other cells.
  • the search unit 42 may determine that the cell corresponding to the interaction information is the second cell, where ⁇ ⁇ 3 and ⁇ ⁇ 4 are predetermined threshold values.
  • the last contact information may further include a device identifier or a user identifier of the user equipment, or an identifier of an RRC connection between the user equipment and other cells.
  • the detecting unit 43 may determine, if the frequency points of the first cell and the second cell are the same, whether the cell identifiers of the first cell and the second cell are the same; If the cell identifier of the second cell is the same, it is detected that the cell identifier conflict occurs between the first cell and the second cell.
  • the detecting unit 43 may also detect the first cell and the first cell. There is no cell identity conflict in the second cell.
  • the foregoing cell identifier may include a BSIC in GSM, a PSC in UMTS, or a PCI in an LTE system.
  • the collision detecting device 40 is capable of performing cell identity collision detection without relying on the cell information reported by the UE and the neighbor list.
  • the collision detecting device 40 can detect the cell identity conflict in the coverage and the same coverage scenario described above with reference to FIG. 1, and it is difficult to perform cell identity conflict detection in such a scenario in the prior art.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本发明实施例提供一种小区标识的冲突检测方法和冲突检测装置。该方法包括:确定用户设备在第一时间点T1接入第一小区或在第一小区中执行连接建立或连接重建;搜索除第一小区之外的其他小区在第一时间点T1附近是否存在与该用户设备有关的交互信息,交互信息用于记录用户设备与其他小区之间的最后联系信息;在搜索到其他小区中的第二小区在第一时间点T1附近存在与该用户设备有关的交互信息时,对第一小区和第二小区执行小区标识冲突检测。本发明实施例不依赖于邻区列表和用户设备的小区信息上报操作,从而提高了小区标识冲突的检测效率。

Description

小区标识的沖突检测方法和沖突检测装置 技术领域
本发明实施例涉及无线通信领域, 并且更具体地, 涉及小区标识的沖突 检测方法和沖突检测装置。 背景技术
无线接入网通常是由多个基站的多个小区组成的。每个小区在空口需要 有唯一的 "小区标识 ", 以供 UE ( User Equipment , 用户设备 )识别。 例如, GSM ( Global System of Mobile communication, 全球移动通信系统) 为每个 小区分配 BSIC ( Base Station Identity Code, 基站标识码 ), UMTS ( Universal Mobile Telecommunications System, 通用移动通信系统) 中每个小区都配置 PSC ( Primary Scrambling Code,主扰码), LTE每个小区都配置 PCI ( Physical Cell Identity, 物理小区标识), 它们都是空口用于标识小区的 "小区标识"。 在移动性管理中, 通过此 "小区标识" 进行切换的目标小区选择。
相邻小区需要配置不同的小区标识, 否则会加重下行干扰、 影响切换, 严重时会导致掉话。 但小区标识的个数通常是有限制的, 例如, UMTS 的 PSC只有 512个, LTE的 PCI只有 504个。 当小区数量较多时, 需要重复使 用小区标识, 即相同的小区标识会用于多个小区, 但这些相同小区标识的小 区在网络规划时需要尽可能隔离, 以避免它们相邻而出现小区标识沖突。
但由于实际组网、 地理位置及环境变化的复杂性, 现网中难以避免小区 标识沖突的现象, 即, 小区标识相同的小区覆盖相邻甚至重叠的现象。为此, 各设备商都有相应的方案来避免、检测、解决可能出现的小区标识沖突问题。
当前已有的解决方案中,都是利用 UE上报的小区信息(例如测量报告、 或切换信令中的目标小区)与已配置邻区列表进行比较来获取可能出现的小 区标识沖突。 但这种方式依赖于 UE上报的小区信息以及邻区列表, 如果使 用相同小区标识的两个小区的邻区列表没有交集或者 UE不触发小区信息的 上报操作, 则无法进行小区标识沖突检测。 发明内容
本发明实施例提供一种小区标识的沖突检测方法和沖突检测装置, 能够 检测小区标识沖突而不依赖于邻区列表和用户设备的小区信息上报操作。 一方面, 提供了一种小区标识的沖突检测方法, 包括: 确定用户设备在 第一时间点 T1接入第一小区或在第一小区中执行连接建立或连接重建; 搜 索除第一小区之外的其他小区在第一时间点 T1附近是否存在与该用户设备 有关的交互信息, 交互信息用于记录用户设备与其他小区之间的最后联系信 息; 在搜索到其他小区中的第二小区在第一时间点 T1附近存在与该用户设 备有关的交互信息时, 对第一小区和第二小区执行小区标识沖突检测。
另一方面, 提供了一种小区标识的沖突检测装置, 包括: 确定单元, 用 于确定用户设备在第一时间点 T1接入第一小区或在第一小区中执行连接建 立或连接重建; 搜索单元, 用于搜索除第一小区之外的其他小区在第一时间 点 T1附近是否存在与该用户设备有关的交互信息, 交互信息用于记录用户 设备与其他小区之间的最后联系信息; 检测单元, 用于在搜索单元搜索到其 他小区中的第二小区在第一时间点 T1附近存在与该用户设备有关的交互信 息时, 对第一小区和第二小区执行小区标识沖突检测。
本发明实施例搜索用户设备在一个小区的接入、连接建立或连接重建的 时间点附近在其他小区是否存在交互信息, 并将该小区与搜索到存在交互信 息的其他小区进行小区标识沖突检测, 而不依赖于邻区列表和用户设备的小 区信息上报操作, 从而提高了小区标识沖突的检测效率。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例或现有技 术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图 仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造 性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是可应用本发明实施例的小区标识沖突场景的示意图。
图 2是本发明一个实施例的小区标识沖突检测方法的流程图。
图 3是本发明另一实施例的小区标识沖突检测过程的示意流程图。 图 4是本发明一个实施例的小区标识的沖突检测装置的框图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创 造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明的技术方案, 可以应用于各种通信系统, 例如: GSM, 码分多址 ( CDMA , Code Division Multiple Access ) 系统, 宽带码分多址( WCDMA , Wideband Code Division Multiple Access Wireless ) , 通用分组无线业务 ( GPRS , General Packet Radio Service ) , 长期演进 (LTE , Long Term Evolution )等。
用户设备 ( UE , User Equipment ) , 也可称之为移动终端 ( Mobile Terminal ),移动用户设备等, 可以经无线接入网(例如, RAN, Radio Access Network )与一个或多个核心网进行通信, 用户设备可以是移动终端, 如移 动电话(或称为"蜂窝"电话)和具有移动终端的计算机, 例如, 可以是便携 式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它们与无线接入 网交换语言和 /或数据。
图 1是可应用本发明实施例的小区标识沖突场景的示意图。 为了筒洁, 在图 1中仅仅描绘了发生小区标识沖突的两个小区 A和 B ,但本发明实施例 对发生小区标识沖突的小区的数目不作限制。本发明实施例可以类似地应用 于更多个小区。
本发明实施例可用于检测发生 "小区标识" 沖突的任何小区八和:8。 特 别地, 图 1的小区 B包含阴影区域, 虚线框示意性地表示小区 A或 B的部 分邻区。 在此情况下, 可能形成如下越区、 同覆盖场景: A与 B小区的小区 标识相同; 通常 A和 B小区的物理距离比较远; 另外, A的邻区列表与 B 的邻区列表可能没有交集; 而且, A与 B小区有重叠的覆盖区域, 如图 1所 示的阴影区域, 此区域的 UE比较容易出现切换失败或掉话。 这种场景下小 区标识沖突导致的切换失败或掉话十分隐蔽,现有技术很难定位这种小区标 识沖突问题。
例如, 如果按照 UE触发测量报告的方式和邻区列表进行小区标识沖突 检测, 则这种场景下, 由于 A和 B小区的邻区列表没有交集, 则无法利用 现有技术通过第三方小区来关联识别出 A和 B小区是距离近还是存在小区 标识沖突; 另一方面, 在 UE不触发测量报告时, 又可能因为干扰而导致传 输误块, 严重时导致掉话。 上面描述的场景可能产生的后果严重性跟 A和 B小区的同覆盖区域中 各小区的相对信号强度相关。 如果同覆盖区域中没有主导小区且干扰严重, 则可能出现掉话。 如果同覆盖区域中有主导小区, 则会影响用户吞吐率从而 影响小区容量。
图 2是本发明一个实施例的小区标识沖突检测方法的流程图。 图 2的方 法可以由任何合适的装置执行, 例如可以由基站、 基站控制器或网络侧服务 器等网元执行, 或者可以由一个独立于通信网络的处理装置执行。
201 ,确定用户设备在第一时间点 T1接入第一小区或在第一小区中执行 连接建立或连接重建。
用户设备在尝试接入、执行连接建立或连接重建时,会发送相应的信令。 可以记录该信令对应的时间点, 例如网络侧设备(如基站、 基站控制器等) 接收到该信令的时间点, 作为第一时间点 Tl。
202,搜索第一小区之外的其他小区在第一时间点 T1附近是否存在与该 用户设备有关的交互信息。 交互信息用于记录用户设备与其他小区之间的最 后联系信息。
在第一时间点 T1附近的时间点是指与 T1间隔的时间值小于或等于预定 门限值的时间点 Τ, 即, 应满足丁- ! !^丁+ ^。 这里, 上述预定门限 值 1 和 1 为非负数, 两者可以相等, 也可以不相等。 另外, " " 表示 该符号左边的时间点不晚于该符号右边的时间点。预定门限值可以 ^据一种 或多种因素进行设置。例如,预定门限值可以与小区内 UE的移动速度有关, 如果小区内高速移动的 UE较多, 则可以将上述预定门限值设置得更小, 以 尽量使得高速 UE不可能在该预定门限值的时段内跨越 Ν个小区, Ν—般大 于 1。 又例如, 预定门限值可以与小区覆盖半径有关, 如果小区覆盖半径较 小, 则可以将上述预定门限值设置得更小, 以尽量使得 UE不可能在该预定 门限值的时段内跨越 Ν个小区。或者,预定门限值可以与两个小区之间的距 离有关, 如果小区距离较近, 则可以将上述预定门限值设置得更小, 以尽量 使得 UE不可能在该预定门限值的时段内从一个小区的覆盖范围移动到另一 小区的覆盖范围。 本发明实施例不限于上述方式。 或者, 预定门限值的设置 还可以考虑两个网络侧设备之间的时钟偏差。
例如, 在 4氏消两个网络侧设备之间的时钟偏差的情况下, 本发明实施例 的预定门限值一般为分钟 ( minute ) 的量级, 例如 2分钟以下。 203 ,在搜索到其他小区中的第二小区在第一时间点 Tl附近存在与用户 设备有关的交互信息时, 对第一小区和第二小区执行小区标识沖突检测。
可选地, 作为一个实施例, 本发明实施例中的 "小区标识" 是在进行网 络规划时配置给小区以供用户设备识别小区的标识, 相同的 "小区标识" 可 能用于多个小区, 例如可以是 GSM中的 BSIC、 UMTS中的 PSC或 LTE系 统中的 PCI。
本发明实施例搜索用户设备在一个小区的接入、连接建立或连接重建的 时间点附近在其他小区是否存在交互信息, 并将该小区与搜索到存在交互信 息的其他小区进行小区标识沖突检测, 而不依赖于邻区列表和用户设备的小 区信息上报操作, 从而提高了小区标识沖突的检测效率。
图 2的方法可以实时地执行, 例如由基站、 基站控制器或网络侧服务器 等网元在用户设备的通信过程中执行。或者,图 2的方法可以非实时地执行, 例如在搜集了各个小区在一段时期内的交互信息之后, 由独立于通信网络的 处理装置执行。本发明实施例对图 2的方法的执行主体和执行方式不作限制。
在上面参照图 1描述的越区、 同覆盖场景下, 小区 A和 B的距离相对 较远。 一般而言, 一个 UE在预定门限时间内不太可能从规划中小区 A覆盖 范围移动到规划中小区 B覆盖范围。 如果同一个 UE与小区 A和 B的空口 交互存在关联(例如交互存在连续性或交叠) 时, 这小区 A和 B应该是相 邻小区, 或有同覆盖的区域。 本发明实施例首先确定同一 UE在两个小区 A 和 B间同时或短时间间隔内存在关联,从而决定是否触发小区标识沖突检测 处理, 这样无需依赖于 UE的测量报告和邻区列表。 特别地, 在上面参考图 1描述的越区、 同覆盖场景下, 如果出现严重后果, 例如切换失败或掉话而 引起 UE重新接入、 连接建立或连接重建, 均会在较短的时间内产生相应的 接入信令, 则可以按照本发明实施例触发小区标识沖突检测处理, 从而提高 检测效率。
下面结合具体例子更加详细地描述本发明的实施例。 图 3是本发明另一 实施例的小区标识沖突检测过程的示意流程图。 为了方便描述, 在图 3的实 施例中, 假设第一小区为图 1所示的小区 A, 所述第二小区为图 1所示的小 区 B, 但本发明实施例对此不作限制。
301 , 第一小区 A在第一时间点 T1 , 出现某 UE尝试接入或执行连接建 立或连接重建。 例如第一小区 A的网络侧设备在 T1接收到该 UE尝试接入 的相关信令, 如 UMTS中的 RRC ( Radio Resource Control, 无线资源控制) CONNECT REQ ( RRC连接请求) 消息。 或者, 第一小区 A的网络侧设备 在 T1接收到该 UE尝试恢复原来信令连接的相关信令,如 UMTS中的 CELL UPDATE(小区更新)消息或 LTE中的 RRC RE-ESTABLISHMENT REQ( RRC 重建请求)消息等。 可选地, 可以设本次重新接入或尝试恢复原来信令连接 的 相 关 信 令 所 对 应 的 UE 标 识 或 信 令 连 接 标 识 为 "RETRY-OR-RECON-UE-ID"„ UE标识可包括但不限于 TMSI ( Temporary Mobile Subscriber Identity, 临时移动用户标识)、 IMSI ( International Mobile Subscriber Identity,国际移动用户标识 )、 IMEI( International Mobile Equipment Identity ,国际移动设备标识 )等;信令连接标识可包括但不限于 RNTI ( Radio Network Temporary Identifier, 无线网络临时标识 )、 链路标识等。
302 , 搜索除第一小区 A之外的其他小区在 T1附近是否存在与标识为 "RETRY-OR-RECON-UE-ID" 的 UE有关的交互信息。 交互信息用于记录 该 UE与其他小区之间的最后联系信息。
可选地, 作为一个实施例, 上述最后联系信息包括 UE与其他小区之间 交互的最后一条信令或数据, 以及与该最后一条信令或数据对应的第二时间 点 T2 (例如网络侧设备接收到该最后一条信令或数据的时间点)。 此时, 如 果满足 T1- Δ ΤΚ Τ2 < Τ1 + Δ Τ2, 则可确定交互信息所对应的小区为第二小 区, 其中 Δ Τ1和 Δ Τ2为预定门限值。 这里, " "表示该符号左边的时间点 不晚于该符号右边的时间点。 Δ Τ1和 Δ Τ2可以相等, 也可以不相等。 Δ Τ1 和 Δ Τ2的设置可考虑一种或多种因素, 本发明实施例对此不作限制。 例如, Δ Τ1和 Δ Τ2可考虑两个网络侧设备的时钟偏差等, 另夕卜, Δ Τ1或 Δ Τ2还 可考虑其他因素, 例如用户设备在两个小区之间移动所需的最大时间等。
可选地, 这里的最后一条信令或数据可包括以下中的至少一个: 最后一 条上行信令或上行数据,最后一个上行 SINR( Signal to Interference plus Noise Ratio, 信干噪比)或 RSRP ( Reference Signal Receiving Power, 参考信号接 收功率)超出门限的数据,最后一个 HARQ( Hybrid Automatic Repeat Request, 混合自动重传请求)反馈信息。 其中, 上述最后一条上行数据可以是最后一 条 CRC ( Cyclic Redundancy Check,循环冗余校验)正确或错误的上行数据, 本发明实施例对此不作限制。 另外, 上述最后一条信令可以是有效信令, 也 可以是无效信令, 本发明实施例对此不作限制。 可选地, 作为另一实施例, 交互信息中所记录的最后联系信息可包括该
UE与其他小区之间的 RRC连接释放的第三时间点 T3。 此时, 如果满足 Τ3-
Δ Τ3 < ΤΚ Τ3+ Δ Τ4, 则可确定交互信息所对应的小区为所述第二小区, 其 中 Δ Τ3和 Δ Τ4为预定门限值。 Δ Τ3和 Δ Τ4可以相等, 也可以不相等。 Δ Τ3和 Δ Τ4的设置可考虑一种或多种因素, 本发明实施例对此不作限制。 例 如, Δ Τ3和 Δ Τ4可考虑两个网络侧设备的时钟偏差等, 另夕卜, Δ Τ3或 Δ Τ4 还可考虑其他因素, 例如用户设备在两个小区之间移动所需的最大时间、 网 络侧具体实现中对用户释放的延迟等。
上述 Τ2和 Τ3的实施例可以同时使用或者可以择一使用。可选地, 交互 信息中所记录的最后联系信息还可以包括 UE标识(设备标识或用户标识) 或信令连接标识, 例如 TMSI、 IMSL IMEI、 RNTI或链路标识等, 以便与 步骤 301 中设置的 "RETRY-OR-RECON-UE-ID" 进行对比。 或者, 最后联 系信息还可以包括该 UE和其他小区之间的 RRC连接的标识。 RRC连接的 标识的例子包括但不限于 LTE中的 C-RNTK Cell RNTI,小区 RNTI )或 S1-AP ID ( SI Application Protocol Identifier, SI应用协议标识;)、 WCDMA 中的 U-RNTI ( Universal RNTI; 全球 RNTI )或 IU-AP ID ( IU Application Protocol Identifier, IU应用协议标识)等, 本发明实施例对 RRC连接标识的具体形 式不作限制。
303, 如果在步骤 302没有检测到符合条件的交互信息, 例如虽然其他 小区存在该 UE的交互信息, 但交互信息的相应时间点不在 T1附近, 或者 虽然其他小区存在其他用户设备的交互信息, 但这些用户设备的标识不是 "RETRY-OR-RECON-UE-ID" , 则确定没有出现小区标识沖突, 按照正常过 程进行处理。 在此情况下, UE有可能是初始接入, 或者 UE的连接建立或 连接重建过程是由于非小区标识沖突的原因引起的。
304,记录该 UE与小区 A之间的最后联系信息,作为小区 A中与该 UE 有关的交互信息。 交互信息中可以记录小区 A 的识别信息, 包括但不限于 ECGI ( Evolved-Universal Terrestrial Radio Access Network Cell Global Identifier, 演进的全球陆地无线接入网小区全球标识), 以供其他小区触发小 区标识沖突检测时用来确定该交互信息属于小区 A, 并且后续在检测小区标 识是否沖突时通过 ECGI获取频点和小区标识等信息。
305, 在步骤 302搜索到符合条件的交互信息, 假设所搜索到的交互信 息所对应的小区为第二小区 B。 例如, 可通过交互信息中记录的小区 B 的 ECGI确定小区 B, 进而获取小区 B的频点和小区标识等信息。
306, 先判断 A和 B小区的频点是否相同。 小区的频点一般是小区的中 心频率配置, 但是本发明实施例对此不作限制。 如果 A和 B小区的频点不 同,则可能是正常的网络规划场景,因为异频小区可以允许配置相同的标识。 此时转至步骤 303和 304,按照正常过程进行处理。步骤 306是可选的步骤。
307, 如果在步骤 306中发现 A和 B小区的频点相同, 则判断 A和 B 小区的小区标识(如 BSIC、 PSC或 PCI )是否相同。 如果 A和 B小区的小 区标识不相同, 则确定 A和 B小区之间没有发生小区标识沖突, 转至步骤 303和 304, 按照正常过程进行处理。
308, 如果 A和 B小区的小区标识相同, 则确定检测到小区标识沖突。 本发明实施例对小区标识沖突的解决方案不作限制。
按照上述方法, 能够进行小区标识沖突检测, 而不依赖于 UE上报的小 区信息以及邻区列表。
特别地, 本发明实施例能够检测到上面参照图 1描述的越区、 同覆盖场 景的小区标识沖突, 现有技术中难以执行这种场景下的小区标识沖突检测。
图 4是本发明一个实施例的小区标识的沖突检测装置的框图。 图 4的沖 突检测装置 40可以由任何合适的装置实现, 例如可以由基站、 基站控制器 或网络侧服务器等网元实现, 或者可以由一个独立于通信网络的处理装置实 现。 如图 4所示, 沖突检测装置 40包括确定单元 41、搜索单元 42和检测单 元 43。
确定单元 41确定用户设备在第一时间点 T1接入第一小区或在第一小区 中执行连接建立或连接重建。 搜索单元 42搜索除第一小区之外的其他小区 在确定单元 42所确定的第一时间点 T1附近是否存在与该用户设备有关的交 互信息, 交互信息用于记录该用户设备与其他小区之间的最后联系信息。
检测单元 43在搜索单元 42搜索到其他小区中的第二小区在第一时间点 T1 附近存在与该用户设备有关的交互信息时, 对第一小区和第二小区执行 小区标识沖突检测。
本发明实施例搜索用户设备在一个小区的接入、连接建立或连接重建的 时间点附近在其他小区是否存在交互信息, 并将该小区与搜索到存在交互信 息的其他小区进行小区标识沖突检测, 而不依赖于邻区列表和用户设备的小 区信息上报操作, 从而提高了小区标识沖突的检测效率。
沖突检测装置 40的各个部件可实现图 2和图 3所述的方法的相应步骤, 为避免重复, 不再详细描述。
可选地, 作为一个实施例, 上述最后联系信息可包括用户设备与其他小 区之间交互的最后一条信令或数据, 以及与最后一条信令或数据对应的第二 时间点 T2。 此时如果满足 Tl- Δ ΤΙ Τ2 Τ1 + Δ Τ2, 则搜索单元 42可确定 该交互信息所对应的小区为所述第二小区,其中 Δ T1和 Δ Τ2为预定门限值。
可选地, 作为另一实施例, 上述最后一条信令或数据包括以下中的至少 一个: 最后一条上行信令或上行数据, 最后一个上行 SINR或 RSRP超出门 限的数据, 最后一个 HARQ反馈信息。
可选地, 作为另一实施例, 最后联系信息可包括该用户设备与其他小区 之间的 RRC连接释放的第三时间点 Τ3。此时,如果满足 Τ3- Δ Τ3 Τ1 Τ3+ Δ Τ4, 则搜索单元 42可确定交互信息所对应的小区为所述第二小区, 其中 Δ Τ3和 Δ Τ4为预定门限值。
可选地, 作为另一实施例, 最后联系信息还可包括用户设备的设备标识 或用户标识, 或者用户设备和其他小区之间的 RRC连接的标识。
可选地, 作为另一实施例, 检测单元 43可以在第一小区和第二小区的 频点相同的情况下, 确定第一小区和所述第二小区的小区标识是否相同; 如 果第一小区和第二小区的小区标识相同, 则检测为第一小区和第二小区发生 小区标识沖突。
可选地, 作为另一实施例, 如果第一小区和第二小区的频点不同, 或者 如果第一小区和第二小区的小区标识不同, 则检测单元 43还可以检测为第 一小区和第二小区没有发生小区标识沖突。
可选地,作为另一实施例,上述小区标识可包括 GSM中的 BSIC、UMTS 中的 PSC或 LTE系统中的 PCI。
沖突检测装置 40能够进行小区标识沖突检测, 而不依赖于 UE上报的 小区信息以及邻区列表。特别地, 沖突检测装置 40能够检测到上面参照图 1 描述的越区、 同覆盖场景下的小区标识沖突, 现有技术中难以执行这种场景 下的小区标识沖突检测。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和筒洁, 上述描 述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一 个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使 用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部 分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前 述的存储介质包括: U盘、移动硬盘、只读存储器( ROM , Read-Only Memory )、 随机存取存储器(RAM, Random Access Memory ), 磁碟或者光盘等各种可 以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准。

Claims

权利要求
1、 一种小区标识的沖突检测方法, 其特征在于, 包括:
确定用户设备在第一时间点 T1接入第一小区或在所述第一小区中执行 连接建立或连接重建;
搜索除所述第一小区之外的其他小区在所述第一时间点 T1附近是否存 在与所述用户设备有关的交互信息,所述交互信息用于记录所述用户设备与 所述其他小区之间的最后联系信息;
在搜索到所述其他小区中的第二小区在所述第一时间点 T1附近存在与 所述用户设备有关的交互信息时,对所述第一小区和所述第二小区执行小区 标识沖突检测。
2、 如权利要求 1所述的方法, 其特征在于, 所述最后联系信息包括所 述用户设备与所述其他小区之间交互的最后一条信令或数据, 以及与所述最 后一条信令或数据对应的第二时间点 T2,
所述搜索除所述第一小区之外的其他小区在所述第一时间点 T1附近是 否存在与所述用户设备有关的交互信息, 包括:
如果满足 T1- Δ ΤΚ Τ2 < Τ1 + Δ Τ2, 则确定所述交互信息所对应的小区 为所述第二小区, 其中 Δ Τ1和 Δ Τ2为预定门限值。
3、 如权利要求 2所述的方法, 其特征在于, 所述最后一条信令或数据 包括以下中的至少一个: 最后一条上行信令或上行数据, 最后一个上行信干 噪比 SINR或参考信号接收功率 RSRP超出门限的数据, 最后一个混合自动 重传请求 HARQ反馈信息。
4、 如权利要求 1所述的方法, 其特征在于, 所述最后联系信息包括所 述用户设备与所述其他小区之间的无线资源控制 RRC连接释放的第三时间 点 Τ3 ,
所述搜索除所述第一小区之外的其他小区在所述第一时间点 T1附近是 否存在与所述用户设备有关的交互信息, 包括:
如果满足 Τ3- Δ Τ3 < ΤΚ Τ3 + Δ Τ4 , 则确定所述交互信息所对应的小区 为所述第二小区, 其中 Δ Τ3和 Δ Τ4为预定门限值。
5、 如权利要求 2-4任一项所述的方法, 其特征在于, 所述最后联系信 息还包括所述用户设备的设备标识或用户标识, 或者所述用户设备和所述其 他小区之间的 RRC连接的标识。
6、 如权利要求 1-5任一项所述的方法, 其特征在于, 所述对所述第一 小区和所述第二小区执行小区标识沖突检测, 包括:
在所述第一小区和所述第二小区的频点相同的情况下,确定所述第一小 区和所述第二小区的小区标识是否相同;
如果所述第一小区和所述第二小区的小区标识相同, 则检测为所述第一 小区和所述第二小区发生小区标识沖突。
7、 如权利要求 6所述的方法, 其特征在于, 所述对所述第一小区和所 述第二小区执行小区标识沖突检测, 还包括:
如果所述第一小区和所述第二小区的频点不同, 或者如果所述第一小区 和所述第二小区的小区标识不同, 则检测为所述第一小区和所述第二小区没 有发生小区标识沖突。
8、 如权利要求 1至 7任一项所述的方法, 其特征在于, 所述小区标识 包括全球移动通信系统 GSM 中的基站标识码 BSIC、 通用移动通信系统 UMTS中的主扰码 PSC或长期演进 LTE系统中的物理小区标识 PCI。
9、 一种小区标识的沖突检测装置, 其特征在于, 包括:
确定单元, 用于确定用户设备在第一时间点 T1接入第一小区或在所述 第一小区中执行连接建立或连接重建;
搜索单元, 用于搜索除所述第一小区之外的其他小区在所述第一时间点 T1 附近是否存在与所述用户设备有关的交互信息, 所述交互信息用于记录 所述用户设备与所述其他小区之间的最后联系信息;
检测单元, 用于在所述搜索单元搜索到所述其他小区中的第二小区在所 述第一时间点 T1附近存在与所述用户设备有关的交互信息时, 对所述第一 小区和所述第二小区执行小区标识沖突检测。
10、 如权利要求 9所述的装置, 其特征在于, 所述最后联系信息包括所 述用户设备与所述其他小区之间交互的最后一条信令或数据, 以及与所述最 后一条信令或数据对应的第二时间点 T2,
所述搜索单元具体用于如果满足 Tl- Δ ΤΙ Τ2 Τ1 + Δ Τ2, 则确定所述 交互信息所对应的小区为所述第二小区, 其中△ T1和△ Τ2为预定门限值。
11、 如权利要求 10所述的装置, 其特征在于, 所述最后一条信令或数 据包括以下中的至少一个: 最后一条上行信令或上行数据, 最后一个上行信 干噪比 SINR或参考信号接收功率 RSRP超出门限的数据, 最后一个混合自 动重传请求 HARQ反馈信息。
12、 如权利要求 9所述的装置, 其特征在于, 所述最后联系信息包括所 述用户设备与所述其他小区之间的无线资源控制 RRC连接释放的第三时间 点 T3 ,
所述搜索单元具体用于如果满足 Τ3- Δ Τ3 < ΤΚ Τ3+ Δ Τ4, 则确定所述 交互信息所对应的小区为所述第二小区, 其中 Δ Τ3和 Δ Τ4为预定门限值。
13、 如权利要求 10-12任一项所述的装置, 其特征在于, 所述最后联系 信息还包括所述用户设备的设备标识或用户标识,或者所述用户设备和所述 其他小区之间的 RRC连接的标识。
14、 如权利要求 9-13 任一项所述的装置, 其特征在于, 所述检测单元 具体用于在所述第一小区和所述第二小区的频点相同的情况下,确定所述第 一小区和所述第二小区的小区标识是否相同; 如果所述第一小区和所述第二 小区的小区标识相同, 则检测为所述第一小区和所述第二小区发生小区标识 沖突。
15、 如权利要求 14所述的装置, 其特征在于, 所述检测单元还用于如 果所述第一小区和所述第二小区的频点不同, 或者如果所述第一小区和所述 第二小区的小区标识不同, 则检测为所述第一小区和所述第二小区没有发生 小区标识沖突。
16、 如权利要求 9至 15任一项所述的装置, 其特征在于, 所述小区标 识包括全球移动通信系统 GSM 中的基站标识码 BSIC、 通用移动通信系统 UMTS中的主扰码 PSC或长期演进 LTE系统中的物理小区标识 PCI。
PCT/CN2012/078438 2012-07-10 2012-07-10 小区标识的冲突检测方法和冲突检测装置 WO2014008634A1 (zh)

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