WO2017000412A1 - 一种lc-mtc系统的小区切换方法、装置及系统 - Google Patents

一种lc-mtc系统的小区切换方法、装置及系统 Download PDF

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Publication number
WO2017000412A1
WO2017000412A1 PCT/CN2015/091350 CN2015091350W WO2017000412A1 WO 2017000412 A1 WO2017000412 A1 WO 2017000412A1 CN 2015091350 W CN2015091350 W CN 2015091350W WO 2017000412 A1 WO2017000412 A1 WO 2017000412A1
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Prior art keywords
access mode
cell handover
perform
mtc
area
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PCT/CN2015/091350
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English (en)
French (fr)
Inventor
雷艺学
郑倩
张云飞
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017000412A1 publication Critical patent/WO2017000412A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a cell switching method, apparatus, and system for an LC-MTC system.
  • LC-MTC a narrowband machine type communication
  • 3GPP Release 13 3GPP Release 13
  • Terminals that support LC-MTC can significantly reduce the cost of the chip due to the reduced RF bandwidth.
  • This is a technology that 3GPP has introduced to support IoT technology in the future 4G-5G phase.
  • This technology is suitable for a narrow-bandwidth IoT service, and has a relaxed latency requirement to expand the cell coverage of LTE. Therefore, it is also called an EC (enhanced coverage) mode.
  • the terminal will adopt the new RSRP and RSRQ measurement and reporting mechanisms.
  • the EC access mode may be supported by a simple MTC terminal or a normal mobile phone terminal.
  • the mobile terminal When the mobile terminal supports the EC access mode, it may fail to support normal operations other than the Internet of Things service. business.
  • the prior art solution has not completely defined the RRC-related protocols and procedures for performing cell handover in the connected state of the LC-MTC terminal, so that the cell may exist in the conversion of the EC access mode and the non-EC access mode. Switch operation problems.
  • the technical problem to be solved by the embodiments of the present invention is to provide a cell handover method, apparatus, and system for an LC-MTC system, which solves the problem that a UE in an LC-MTC system converts between an EC access mode and a non-EC access mode. Possible cell handover operation problems.
  • an embodiment of the present invention provides a cell handover method for an LC-MTC system, which may include:
  • a triggering area that is used by the UE to perform cell handover
  • the triggering area includes a first triggering area and a second triggering area
  • the first triggering area is that the UE is in an EC access mode and a non-EC connection
  • the second triggering area is an area in which the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode
  • the UE When it is detected that the UE enters the first triggering area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the neighboring base station corresponding to the UE needs to perform cell handover does not support the EC connection In the mode, the UE is controlled to stop the EC access mode and switch to the non-EC access mode to perform the cell handover in the cell handover process.
  • the measurement information includes a reference signal received quality RSRQ;
  • the calculating, by the measurement information, the triggering area that the UE performs cell handover including:
  • the current access mode of the UE is the EC access mode
  • the current access mode of the UE is a non-EC access mode
  • the measurement information includes indication information that whether the UE maintains an EC access mode within a preset time period when the UE is in an EC access mode;
  • the method further includes:
  • the neighboring base station supports EC access. In the mode, determining whether the UE indicates to maintain the EC access mode within a preset time period;
  • the UE is controlled to maintain the EC access mode to perform the cell handover during the cell handover process.
  • the determining, by the determining whether the UE indicates that the EC access mode is maintained within a preset time period further includes:
  • the UE is controlled to switch to the non-EC access mode during the cell handover process. Performing the cell handover according to the method; or controlling, according to the pre-stored setting in the UE, the UE to perform the cell handover in an access mode corresponding to the pre-stored setting.
  • the method further includes :
  • controlling the UE When detecting that the UE enters the first triggering area, and the UE is in a non-EC access mode, controlling the UE to maintain the non-EC access mode to perform the cell handover in a cell handover process.
  • the method further includes :
  • an embodiment of the present invention provides a cell switching device of an LC-MTC system, which may include:
  • An acquiring module configured to acquire measurement information of the user equipment UE, where the access modes supported by the UE include an enhanced coverage type EC access mode applicable to the LC-MTC, and a non-EC access mode;
  • a calculation module configured to calculate, according to the measurement information, a triggering area that is used by the UE to perform cell handover, where the triggering area includes a first triggering area and a second triggering area, where the first triggering area is the UE accessing in the EC The area where the cell handover can be performed in the mode and the non-EC access mode, where the second triggering area is an area in which the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode. ;
  • a first control module configured to: when it is determined that the UE is in the first trigger area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the UE needs to perform cell handover corresponding If the neighboring base station does not support the EC access mode, the UE is controlled to stop the EC access mode and switch to the non-EC access mode to perform the cell handover in the cell handover process.
  • the measurement information includes a reference signal received quality RSRQ;
  • the calculation module includes:
  • a determining unit configured to determine, according to the measurement information, a current access mode of the UE
  • a first calculating unit configured to calculate an RSRQ in a non-EC access mode according to an RSRQ in an EC access mode in the measurement information, if the current access mode of the UE is an EC access mode;
  • a second calculating unit configured to calculate an RSRQ in an EC access mode according to an RSRQ in a non-EC access mode in the measurement information, if the current access mode of the UE is a non-EC access mode;
  • a third calculating unit configured to calculate, according to a difference between the RSRQ in the EC access mode and the RSRQ in the non-EC access mode, a trigger region in which the UE performs cell handover.
  • the measurement information includes indication information that whether the UE maintains an EC access mode within a preset time period when the UE is in an EC access mode;
  • the device further includes:
  • a second judging module configured to: when it is determined that the UE is in the first trigger area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the UE needs to perform cell handover corresponding When the neighboring base station supports the EC access mode, it is determined whether the UE indicates to maintain the EC access mode within a preset time period;
  • a second control module configured to: if the determination result is yes, control the UE to maintain the EC access mode to perform the cell handover during the cell handover process.
  • the device further includes:
  • a third control module configured to: if the determination result is no, control the UE to switch to a non-EC access mode to perform the cell handover in a cell handover process; or control the UE to be in accordance with a pre-stored setting in the UE The cell handover is performed in an access mode corresponding to the pre-stored setting.
  • the apparatus further includes :
  • a fourth control module configured to: when detecting that the UE enters the first trigger area, and the UE is in a non-EC access mode, control the UE to maintain a non-EC access mode during a cell handover process Performing the cell handover.
  • the apparatus further includes :
  • a fifth control module configured to: when detecting that the UE enters the second trigger area, and the UE is in an EC access mode applicable to an LC-MTC, control the UE to remain in a cell handover process
  • the EC access mode performs the cell handover.
  • an embodiment of the present invention provides a cell handover system of an LC-MTC system, which may include a UE and a base station, where the access mode supported by the UE includes an enhanced coverage type EC applicable to the LC-MTC. Access mode, and non-EC access mode;
  • the base station is configured to acquire measurement information of the user equipment UE, where the access mode supported by the UE includes an enhanced coverage type EC access mode applicable to the LC-MTC, and a non-EC access mode; and calculating according to the measurement information.
  • the triggering area of the UE for performing cell handover where the triggering area includes a first triggering area and a second triggering area, where the first triggering area is performed by the UE in both an EC access mode and a non-EC access mode.
  • the second triggering area is an area in which the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode; when detecting that the UE enters the If the UE is in the EC access mode applicable to the LC-MTC, if it is determined that the neighboring base station corresponding to the cell handover needs to support the EC access mode, the UE is controlled to be in the cell. During the handover, the EC access mode is stopped and the handover to the non-EC access mode is performed to perform the cell handover.
  • the base station includes the second aspect of the embodiment of the present invention, or the first possible implementation manner of the second aspect, or the second possible The cell switching of the LC-MTC system in the implementation manner, or the third possible implementation manner of the second aspect, or the fourth possible implementation manner of the second aspect, or the fifth possible implementation manner of the second aspect Device.
  • the UE performs the cell handover triggering region according to the measurement information of the user equipment UE.
  • the UE enters the corresponding trigger region, it determines and indicates that the UE is performing according to the type of the trigger region and the current access mode of the UE.
  • the maintenance or handover of the access mode during the handover of the cell avoids the problem that the performance of the network system deteriorates due to the uncertainty of the protocol operation of the UE in the cell handover process in the LC-MTC system, and improves the UE access in the EC. Stability and efficiency of cell handover operations in the transition of mode and non-EC access modes.
  • FIG. 1 is a schematic flowchart of a cell handover method of an LC-MTC system according to an embodiment of the present invention
  • FIG. 2 and FIG. 3 are schematic flowcharts of a cell handover method of another LC-MTC system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a specific application scenario of a cell handover method of an LC-MTC system according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of another specific application scenario of a cell handover method of an LC-MTC system according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a cell switching apparatus of an LC-MTC system according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a cell switching apparatus of another LC-MTC system according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a cell switching system of an LC-MTC system according to an embodiment of the present invention.
  • the UE in the embodiment of the present invention includes, but is not limited to, a smartphone, a tablet, a media player, a smart TV, a smart bracelet, a smart wearable device, and an MP3 supporting LC-MTC.
  • Player Motion Picture Experts Group Audio Layer III
  • MP4 Motion Picture Experts Group Audio Layer IV
  • PDA Personal Digital Assistant
  • mobile communication devices such as laptop portable computers.
  • FIG. 1 is a schematic flowchart of a cell handover method of an LC-MTC system according to an embodiment of the present invention.
  • a cell handover method of an LC-MTC system according to an embodiment of the present invention will be described in detail below with reference to FIG.
  • the cell handover method of an LC-MTC system in this embodiment may include the following steps S101 to S103.
  • Step S101 Acquire measurement information of the user equipment UE.
  • the access modes supported by the UE include an enhanced coverage type EC access mode applicable to a narrowband machine type communication LC-MTC, and a non-EC access mode.
  • LC-MTC Low-cost MTC
  • EC Enhanced coverage
  • the UE running this mode adopts the LC-MTC mode for its RSRP/RSRQ measurement reporting mechanism and system information acquisition.
  • the non-EC access mode is a wireless communication mode other than the EC access mode, such as a normal 2G, 3G or 4G communication mode.
  • the UE in the present invention can be either an LC-MTC terminal supporting the EC access mode or an ordinary mobile phone terminal supporting the LC-MTC.
  • the measurement information includes a measurement report value of the user equipment, such as a reference signal received power (RSRP) and a reference signal received quality (RSRQ).
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • the UE may also be included in the EC access mode, and the UE reports to the base station whether it needs to maintain information such as the EC access mode for a long time, such as an instruction of the time time in EC mode.
  • Step S102 Calculate, according to the measurement information, a trigger area in which the UE performs cell handover.
  • the triggering area includes a first triggering area and a second triggering area, where the first triggering area is an area that the UE can perform cell switching in an EC access mode and a non-EC access mode, where the The second trigger area is an area in which the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode.
  • the measurement information includes a reference signal received quality RSRQ; determining, according to the measurement information, a current access mode of the UE; if the current access mode of the UE is an EC access mode, RSRQ in EC access mode in measurement information, calculated in non-EC access mode RSRQ; if the current access mode of the UE is a non-EC access mode, calculating an RSRQ in the EC access mode according to the RSRQ in the non-EC access mode in the measurement information; according to the EC access mode The difference between the RSRQ and the RSRQ in the non-EC access mode is used to calculate a trigger region in which the UE performs cell handover.
  • RSRQ reference signal received quality
  • the UE_1 reports the RSRQ#ec in the EC access mode to the base station, and the base station estimates the RSRQ#normal in the non-EC access mode of the UE according to the current location of the UE_1.
  • the base station may analyze the measurement report value of the estimated EC access mode of the UE; if the UE reports the EC access mode, the base station may estimate the non-EC access mode of the UE. Measurement report value. Therefore, by using the foregoing method, the base station can estimate whether the UE triggers the cell handover in the case of the EC access mode and the non-EC access mode, and the following two situations exist, that is, corresponding to the two trigger regions:
  • Case 1 The EC access mode triggers cell handover, and the non-EC access mode also triggers cell handover.
  • Case 2 The EC access mode triggers cell handover, and the non-EC access mode does not trigger cell handover.
  • Case 1 corresponds to the first trigger region involved in the present invention
  • Case 2 corresponds to the second trigger region according to the present invention.
  • the base station may analyze the difference between the measurement report values in the measurement information when the UE is in the EC access mode and the non-EC access mode.
  • the specific implementation method can be calculated by estimating the path loss and interference, and combining the statistical information of the historical measurement report value data.
  • Step S103 When it is detected that the UE enters the first triggering area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the neighboring base station corresponding to the UE needs to perform cell handover, When the EC access mode is supported, the UE is controlled to stop the EC access mode and switch to the non-EC access mode to perform the cell handover in the cell handover process.
  • the first triggering area is an area that the UE can perform cell handover in both the EC access mode and the non-EC access mode, and when detecting that the UE enters the first triggering area, and the UE is in the EC access mode, In this case, the UE may perform cell handover in the EC access mode or the non-EC access mode. If the UE is in the EC access mode, the UE may be in the current EC access mode.
  • the UE When the cell handover is triggered, the UE may have started to switch according to the handover instruction returned by the base station, but when it is determined that the neighboring base station that needs to perform cell handover does not support the EC access mode, the handover has occurred, and the adjacent after the handover If the neighboring base station corresponding to the cell does not support the EC access mode, the cell handover fails. If the handover request is re-initiated after the handover fails, the ping-pong effect will be caused. Cause frequent signaling. Therefore, in the cell handover process in this case, it is required to determine whether the neighboring base station corresponding to the cell handover needs to support the EC access mode.
  • the serving base station should control or instruct the UE to stop the EC access mode in which the UE is currently in the cell handover process and switch to the non-EC access mode to perform the cell handover. The feasibility and stability of the UE for cell handover.
  • the access mode change signaling initiated by the base station for the UE may be performed. Deferred, ignored, or rejected to maintain the current access mode of the UE; when the UE is controlled to switch to another access mode during the cell handover process, the UE may initiate the handover mode signaling initiated by the UE in time.
  • the UE should refer to the method flow in the above steps S101 to S104 to perform active judgment and hold on the access mode hold or handover in the cell handover process of the UE, and only need to be connected.
  • the incoming mode initiates signaling of the access mode change to the serving base station.
  • the present invention does not specifically limit the manner in which the UE finally maintains or switches the access mode.
  • the UE performs the cell handover triggering region according to the measurement information of the user equipment UE.
  • the UE enters the corresponding trigger region, it determines and indicates that the UE is performing according to the type of the trigger region and the current access mode of the UE.
  • the maintenance or handover of the access mode during the handover of the cell avoids the problem that the performance of the network system deteriorates due to the uncertainty of the protocol operation of the UE in the cell handover process in the LC-MTC system, and improves the UE access in the EC. Stability and efficiency of cell handover operations in the transition of mode and non-EC access modes.
  • FIG. 2 and FIG. 3 are schematic flowcharts of a cell switching method of another LC-MTC system according to an embodiment of the present invention, and another LC-MTC system in the embodiment of the present invention will be described below with reference to FIG. 2 and FIG.
  • the cell handover method of another LC-MTC system in the embodiment of the present invention may include the following steps S201 to S208.
  • Step S201 Acquire measurement information of the user equipment UE, and the access mode supported by the UE includes an enhanced coverage type EC access mode applicable to a narrowband machine type communication LC-MTC, and a non-EC connection. Into the mode.
  • step S101 in the embodiment of FIG. 1 may be referred to, and details are not described herein again.
  • Step S202 Calculate, according to the measurement information, a triggering area for performing cell handover by the UE, where the triggering area includes a first triggering area and a second triggering area, where the first triggering area is that the UE is in an EC access mode and A cell that can perform cell handover in the non-EC access mode, where the second triggering region is an area in which the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode.
  • step S102 in the embodiment of FIG. 1 may be referred to, and details are not described herein again.
  • Step S203 When it is detected that the UE enters the first triggering area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the neighboring base station corresponding to the UE needs to perform cell handover, When the EC access mode is supported, the UE is controlled to stop the EC access mode and switch to the non-EC access mode to perform the cell handover in the cell handover process.
  • step S103 in the embodiment of FIG. 1 may be referred to, and details are not described herein again.
  • Step S204 When it is detected that the UE enters the first triggering area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the UE needs to perform neighboring base station support corresponding to the cell handover, In the EC access mode, it is determined whether the UE indicates to maintain the EC access mode within a preset time period.
  • the service when it is detected that the UE enters the first trigger area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the neighboring base station supports the EC access mode, the service is The base station needs to determine and indicate the access mode that the UE needs to maintain or switch when performing cell handover according to the actual situation and needs of the UE. Preferably, determining, according to the measurement information, whether the UE indicates to maintain an EC access mode in a preset time period, where the measurement information includes whether the UE is in a preset time period when the UE is in an EC access mode.
  • the indication information of the EC access mode is maintained, and the indication information may be notified to the non-access stratum NAS layer of the UE by the access layer AS layer of the UE, and the NAS layer of the UE may be notified to the NAS layer of the core network before the handover occurs, such as Mobile management node MME.
  • Step S205 If the determination result is yes, the UE is controlled to maintain the EC access mode to perform the cell handover during the cell handover process.
  • step S204 if the result of the determination in step S204 is YES, it indicates that the UE has a larger service demand in the EC access mode, and needs to perform the service in the EC access mode for a long time, indicating that the UE is in the cell handover process.
  • the EC access mode is always maintained, that is, the request for the service of the non-EC access mode cannot be initiated.
  • Step S206a If the determination result is no, the UE is controlled to switch to the non-EC access mode to perform the cell handover in the cell handover process.
  • the base station analyzes whether the handover of the UE is performed in the non-EC access mode or the EC access mode.
  • the basis for determining whether to perform in the non-EC access mode or the EC access mode may be to consider the consumption of the core network signaling, because in the non-EC access mode, the cell coverage in the non-EC access mode is small, and the signal is small. Strong, so the robustness of the handover is relatively good, so the cell handover is preferentially performed in the non-EC access mode from the perspective of handover robustness and core network signaling overhead.
  • step S206a in the above embodiment may also be implemented by the method flow in the following step S206b.
  • Step S206b If the determination result is no, the UE is controlled to perform the cell handover in the access mode corresponding to the pre-stored setting according to the pre-stored setting in the UE.
  • the base station analyzes whether the handover of the UE is in the normal mode or the EC access mode.
  • the basis for the judgment can also be based on the user's preset preference settings. For example, for a UE with frequent LC-MTC services, the user can preset the EC access mode as the priority access mode in advance, that is, the cell handover can be performed preferentially without changing the EC access mode.
  • Step S207 When it is detected that the UE enters the first triggering area, and the UE is in a non-EC access mode, control the UE to maintain the non-EC access mode to perform the cell in the cell handover process. Switch.
  • the first triggering area is an area in which the UE can perform cell handover in both the EC access mode and the non-EC access mode, and when the UE is in the non-EC access mode, the cell in the non-EC access mode
  • the coverage is small and the signal is strong, so the robustness of the handover is relatively good. Therefore, cell handover is preferentially performed in the non-EC access mode from the perspective of handover robustness and core network signaling overhead.
  • the mode should be kept as much as possible during the handover process.
  • Step S208 When it is detected that the UE enters the second triggering area, and the UE is in an EC access mode applicable to the LC-MTC, the UE is controlled to maintain the EC connection during the cell handover process.
  • the in-mode performs the cell handover.
  • the second trigger area is an area in which the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode. Therefore, when the UE enters the range of the area, in the non-EC access mode, the operation of the cell handover is not triggered, so in the case In this case, only the UE is in the EC access mode. In this case, in the second triggering region, the UE can successfully initiate and perform cell handover only in the EC access mode. Therefore, if the UE is in the second trigger region, The cell handover can be performed only when the current EC access mode is maintained. In this case, the serving base station should control the UE to maintain the EC access mode to perform the cell handover during the cell handover process, and perform other optimization processing.
  • FIG. 4 is a schematic diagram of a specific application scenario of a cell handover method of an LC-MTC system according to an embodiment of the present invention, where the real-line areas are respectively UEs in a non-EC access mode.
  • the coverage of the cell A and the cell B, and the dotted area is the coverage of the cell A and the cell B in the EC access mode, where the area where the UE is located in the overlapping area between the cell A and the cell B is the first a triggering area, where the first triggering area is an area in which the UE can perform cell switching in the EC access mode and the non-EC access mode, and may be in the S101-S103 or S201-S208 in the method step process.
  • the method rule performs the holding or switching of the access mode during the cell handover process by the UE.
  • FIG. 5 is a schematic diagram of another specific application scenario of the cell handover method of the LC-MTC system in the embodiment of the present invention, where the solid line areas are respectively in the non-EC access mode of the UE.
  • the coverage of the cell A and the cell B, and the dotted area is the coverage of the cell A and the cell B in the EC access mode, where the UE is located in the overlapping area between the cell A and the cell B.
  • a triggering area where the first triggering area is an area in which the UE can perform cell switching in the EC access mode and the non-EC access mode, and may be in accordance with S101-S103 or S201-S208 in the method step flow.
  • the method rule in the method performs the holding or switching of the access mode in the cell handover process by the UE.
  • the specific implementation scheme may be adjusted according to the needs of the user or the actual situation of the scenario, and the present invention does not enumerate them.
  • the UE performs the cell handover triggering region according to the measurement information of the user equipment UE.
  • the UE enters the corresponding trigger region, it determines and indicates that the UE is performing according to the type of the trigger region and the current access mode of the UE.
  • the maintenance or handover of the access mode during the handover of the cell avoids the problem that the performance of the network system deteriorates due to the uncertainty of the protocol operation of the UE in the cell handover process in the LC-MTC system, and improves the UE access in the EC. Stability and efficiency of cell handover operations in the transition of mode and non-EC access modes.
  • FIG. 6 is a schematic structural diagram of a cell switching apparatus of an LC-MTC system according to an embodiment of the present invention, A flow of a cell handover method for performing an LC-MTC system in the foregoing embodiment shown in FIG.
  • the apparatus 10 can include an acquisition module 101, a calculation module 102, and a first control module 103.
  • the obtaining module 101 is configured to acquire measurement information of the user equipment UE, where the access modes supported by the UE include an enhanced coverage type EC access mode applicable to the LC-MTC, and a non-EC access mode.
  • the obtaining module 101 can execute and complete all the methods and processes in the method step S101, and details are not described herein again.
  • the calculation module 102 is configured to calculate, according to the measurement information, a triggering area for performing cell handover by the UE, where the triggering area includes a first triggering area and a second triggering area, where the first triggering area is that the UE is connected in the EC An area in which both the inbound mode and the non-EC access mode can perform cell handover, where the second triggering area is that the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode. region.
  • the calculation module 102 can execute and complete all the methods and processes in the method step S102, and details are not described herein again.
  • the first control module 103 is configured to: when it is determined that the UE is in the first trigger area, and the UE is in an EC access mode applicable to the LC-MTC, determine that the UE needs to perform cell handover corresponding If the neighboring base station does not support the EC access mode, the UE is controlled to stop the EC access mode and switch to the non-EC access mode to perform the cell handover in the cell handover process.
  • the first control module 103 can execute and complete all the methods and processes in the method step S103, and details are not described herein again.
  • the UE performs the cell handover triggering region according to the measurement information of the user equipment UE.
  • the UE enters the corresponding trigger region, it determines and indicates that the UE is performing according to the type of the trigger region and the current access mode of the UE.
  • the maintenance or handover of the access mode during the handover of the cell avoids the problem that the performance of the network system deteriorates due to the uncertainty of the protocol operation of the UE in the cell handover process in the LC-MTC system, and improves the UE access in the EC. Stability and efficiency of cell handover operations in the transition of mode and non-EC access modes.
  • FIG. 7 is a schematic structural diagram of a cell switching apparatus of another LC-MTC system according to an embodiment of the present invention, for performing cell handover of another LC-MTC system in the foregoing embodiment shown in FIG. 2 and FIG. The flow of the method.
  • the device 20 can include an acquisition module 201, a calculation module 202, a first control module 203, a second determination module 204, a second control module 205, a third control module 206, a fourth control module 207, and a fifth control module 208.
  • the calculation module 202 can include a determination unit 2021, a first calculation unit 2022, a second calculation unit 2023, and a third calculation unit 2024.
  • the obtaining module 201 is configured to acquire measurement information of the user equipment UE, where the access modes supported by the UE include an enhanced coverage type EC access mode applicable to the LC-MTC, and a non-EC access mode;
  • the obtaining module 201 can execute and complete all the methods and processes in the method step S201, and details are not described herein again.
  • the calculation module 202 can include a determination unit 2021, a first calculation unit 2022, a second calculation unit 2023, and a third calculation unit 2024.
  • the determining unit 2021 is configured to determine, according to the measurement information, a current access mode of the UE.
  • the first calculating unit 2022 is configured to: if the current access mode of the UE is an EC access mode, calculate an RSRQ in a non-EC access mode according to an RSRQ in an EC access mode in the measurement information;
  • the second calculating unit 2023 is configured to calculate, according to the RSRQ in the non-EC access mode in the measurement information, the RSRQ in the EC access mode, if the current access mode of the UE is the non-EC access mode;
  • the third calculating unit 2024 is configured to calculate, according to a difference between the RSRQ in the EC access mode and the RSRQ in the non-EC access mode, a trigger region in which the UE performs cell handover.
  • the 2021 to 2024 units included in the calculation module 202 of the device can execute and complete all the methods and processes in the method step S202, and details are not described herein again.
  • the first control module 203 is configured to: when it is determined that the UE is in the first trigger area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the UE needs to perform cell handover corresponding If the neighboring base station does not support the EC access mode, the UE is controlled to stop the EC access mode and switch to the non-EC access mode to perform the cell handover in the cell handover process.
  • the first control module 203 can execute and complete all the methods and processes in the method step S203, and details are not described herein again.
  • the second judging module 204 is configured to: when it is determined that the UE is in the first trigger area, and the UE is in an EC access mode applicable to the LC-MTC, if it is determined that the UE needs to perform cell handover corresponding When the neighboring base station supports the EC access mode, it is determined whether the UE indicates that the preset time period is The EC access mode is maintained.
  • the second determining module 204 can execute and complete all the methods and processes in the method step S204, and details are not described herein again.
  • the second control module 205 is configured to, if the determination result is yes, control the UE to maintain the EC access mode to perform the cell handover during the cell handover process.
  • the second control module 205 can execute and complete all the methods and processes in the method step S205, and details are not described herein again.
  • the third control module 206 is configured to: if the determination result is no, control the UE to switch to the non-EC access mode to perform the cell handover in the cell handover process; or control the UE according to the pre-stored setting in the UE.
  • the cell handover is performed in an access mode corresponding to the pre-stored setting.
  • the third control module 206 can execute and complete all the methods and processes in the method step S206a or the method step S206b, and details are not described herein again.
  • the fourth control module 207 is configured to: when detecting that the UE enters the first trigger area, and the UE is in a non-EC access mode, control the UE to maintain non-EC access during cell handover The mode performs the cell handover.
  • the fourth control module 207 can execute and complete all the methods and processes in the method step S207, and details are not described herein again.
  • the fifth control module 208 is configured to: when detecting that the UE enters the second trigger area, and the UE is in an EC access mode applicable to the LC-MTC, control the UE to be in a cell handover process, Maintaining the EC access mode performs the cell handover.
  • the fifth control module 208 can execute and complete all the methods and processes in the method step S208, and details are not described herein again.
  • the UE performs the cell handover triggering region according to the measurement information of the user equipment UE.
  • the UE enters the corresponding trigger region, it determines and indicates that the UE is performing according to the type of the trigger region and the current access mode of the UE.
  • the maintenance or handover of the access mode during the handover of the cell avoids the problem that the performance of the network system deteriorates due to the uncertainty of the protocol operation of the UE in the cell handover process in the LC-MTC system, and improves the UE access in the EC. Stability and efficiency of cell handover operations in the transition of mode and non-EC access modes.
  • the cell handover system 30 of the LC-MTC system includes a UE 301 and a base station 302, where
  • the access modes supported by the UE 301 include an enhanced coverage type EC access mode applicable to the LC-MTC, and a non-EC access mode;
  • the base station 302 is configured to acquire measurement information of the user equipment UE, and the access mode supported by the UE includes an enhanced coverage type EC access mode applicable to a narrowband machine type communication LC-MTC, and a non-EC access mode; Calculating, according to the measurement information, a triggering area that is used by the UE to perform cell handover, where the triggering area includes a first triggering area and a second triggering area, where the first triggering area is that the UE is in an EC access mode and a non-EC connection An area in which the cell handover can be performed in the inbound mode, where the second triggering area is an area in which the UE can perform cell handover in the EC access mode but cannot perform cell handover in the non-EC access mode; When the UE enters the first triggering area, and the UE is in the EC access mode applicable to the LC-MTC, if it is determined that the neighboring base station corresponding to the cell handover needs to support the EC access mode, the neighboring base station does not
  • the base station 302 in the cell switching system 30 of the LC-MTC system includes the cell switching device of the LC-MTC system of FIG. 6 to FIG. 7, and how to implement it specifically, refer to the description of the foregoing device item embodiment, where No longer.
  • the UE performs the cell handover triggering region according to the measurement information of the user equipment UE.
  • the UE enters the corresponding trigger region, it determines and indicates that the UE is performing according to the type of the trigger region and the current access mode of the UE.
  • the maintenance or handover of the access mode during the handover of the cell avoids the problem that the performance of the network system deteriorates due to the uncertainty of the protocol operation of the UE in the cell handover process in the LC-MTC system, and improves the UE access in the EC. Stability and efficiency of cell handover operations in the transition of mode and non-EC access modes.
  • the readable storage medium when executed, may include the flow of an embodiment of the methods as described above.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开了一种窄频带机器类型通信（LC-MTC）系统的小区切换方法、装置及系统，其中的方法可包括：获取用户设备（UE）的测量信息（S101）；根据所述测量信息计算所述UE进行小区切换的触发区域(S102)；当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的增强覆盖（EC）接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换(S103)。采用本发明可以解决LC-MTC系统中的UE在EC接入模式和非EC接入模式的转化时可能存在的小区切换操作问题。

Description

一种LC-MTC系统的小区切换方法、装置及系统 技术领域
本发明涉及通信技术领域，尤其涉及一种LC-MTC系统的小区切换方法、装置及系统。
背景技术
LC-MTC，即窄频带机器类型通信，是3GPP Release 13定义的一种新的物联网技术规范，运行在1.4MHz的频带上，和LTE系统CAT 0 UE类似。支持LC-MTC的终端由于射频带宽降低，因此能够显著降低芯片的成本。这是3GPP为了支持未来4G-5G阶段的物联网技术而推出的技术。这种技术适合于窄带宽的物联网业务，对时延的要求有所放宽，能够扩大LTE的小区覆盖范围，因此，又被称为EC(enhanced coverage)模式。EC接入模式下，终端会采用新的RSRP和RSRQ测量与汇报机制。随着门限值的改变，LTE系统的小区覆盖范围会发生改变。EC接入模式既可能是单纯的MTC终端所支持的，也可能是正常的手机终端支持的，手机终端支持EC接入模式的情况下，可能会导致无法支持除物联网业务之外的其他正常业务。现有技术方案还没有对LC-MTC终端在连接状态下进行小区切换等RRC相关协议和流程进行完整的定义，使得手机终端在EC接入模式和非EC接入模式的转化时可能存在的小区切换操作问题。
发明内容
本发明实施例所要解决的技术问题在于，提供一种LC-MTC系统的小区切换方法、装置及系统，解决了LC-MTC系统中的UE在EC接入模式和非EC接入模式的转化时可能存在的小区切换操作问题。
第一方面，本发明实施例提供了一种LC-MTC系统的小区切换方法，可包括：
获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于 LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域；
当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
结合第一方面，在第一种可能的实现方式中，所述测量信息包括参考信号接收质量RSRQ；
所述根据所述测量信息计算所述UE进行小区切换的触发区域，包括：
根据所述测量信息判断所述UE当前的接入模式；
若所述UE当前的接入模式为EC接入模式，则根据测量信息中的EC接入模式下的RSRQ，计算非EC接入模式下的RSRQ；
若所述UE当前的接入模式为非EC接入模式，则根据测量信息中非EC接入模式下的RSRQ，计算EC接入模式下的RSRQ；
根据所述EC接入模式下的RSRQ和非EC接入模式下的RSRQ之间的差值，计算所述UE进行小区切换的触发区域。
结合第一方面，在第二种可能的实现方式中，所述测量信息包括当所述UE处于EC接入模式下所述UE是否在预设时间段内保持EC接入模式的指示信息；
所述方法，还包括：
当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站支持EC接入模式时，则判断所述UE是否指示在预设时间段内保持EC接入模式；
若判断结果为是，则控制所述UE在小区切换过程中，保持EC接入模式进行所述小区切换。
结合第一方面的第二种可能的实现方式，在第三种可能的实现方式中，所述判断所述UE是否指示在预设时间段内保持EC接入模式之后，还包括：
若判断结果为否，则控制所述UE在小区切换过程中，切换至非EC接入模 式进行所述小区切换；或者根据UE中的预存设置控制所述UE在所述预存设置对应的接入模式下进行所述小区切换。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式中任意一种方式，在第四种可能的实现方式中，所述方法，还包括：
当检测到所述UE进入所述第一触发区域，且所述UE处于非EC接入模式时，则控制所述UE在小区切换过程中，保持非EC接入模式进行所述小区切换。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式中任意一种方式，在第五种可能的实现方式中，所述方法，还包括：
当检测到所述UE进入所述第二触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，则控制所述UE在小区切换过程中，保持所述EC接入模式进行所述小区切换。
第二方面，本发明实施例提供了一种LC-MTC系统的小区切换装置，可包括：
获取模块，用于获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
计算模块，用于根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域；
第一控制模块，用于当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
结合第二方面，在第一种可能的实现方式中，所述测量信息包括参考信号接收质量RSRQ；
所述计算模块，包括：
判断单元，用于根据所述测量信息判断所述UE当前的接入模式；
第一计算单元，用于若所述UE当前的接入模式为EC接入模式，则根据测量信息中的EC接入模式下的RSRQ，计算非EC接入模式下的RSRQ；
第二计算单元，用于若所述UE当前的接入模式为非EC接入模式，则根据测量信息中非EC接入模式下的RSRQ，计算EC接入模式下的RSRQ；
第三计算单元，用于根据所述EC接入模式下的RSRQ和非EC接入模式下的RSRQ之间的差值，计算所述UE进行小区切换的触发区域。
结合第二方面，在第二种可能的实现方式中，所述测量信息包括当所述UE处于EC接入模式下所述UE是否在预设时间段内保持EC接入模式的指示信息；
所述装置，还包括：
第二判断模块，用于当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站支持EC接入模式时，则判断所述UE是否指示在预设时间段内保持EC接入模式；
第二控制模块，用于若判断结果为是，则控制所述UE在小区切换过程中，保持EC接入模式进行所述小区切换。
结合第二方面的第二种可能的实现方式，在第三种可能的实现方式中，所述装置，还包括：
第三控制模块，用于若判断结果为否，则控制所述UE在小区切换过程中，切换至非EC接入模式进行所述小区切换；或者根据UE中的预存设置控制所述UE在所述预存设置对应的接入模式下进行所述小区切换。
结合第二方面或第二方面的第一种可能的实现方式或第二方面的第二种可能的实现方式中任意一种方式，在第四种可能的实现方式中，所述装置，还包括：
第四控制模块，用于当检测到所述UE进入所述第一触发区域，且所述UE处于非EC接入模式时，则控制所述UE在小区切换过程中，保持非EC接入模式进行所述小区切换。
结合第二方面或第二方面的第一种可能的实现方式或第二方面的第二种可能的实现方式中任意一种方式，在第五种可能的实现方式中，所述装置，还包括：
第五控制模块，用于当检测到所述UE进入所述第二触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，则控制所述UE在小区切换过程中，保持所述EC接入模式进行所述小区切换。
第三方面，发明实施例提供了一种LC-MTC系统的小区切换系统，可包括UE和基站，其特征在于，所述UE支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
所述基站用于获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域；当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
结合第三方面，在第一种可能的实现方式中，所述基站包括本发明实施例第二方面，或者第二方面的第一种可能的实现方式、或者第二方面的第二种可能的实现方式、或者第二方面的第三种可能的实现方式、或者第二方面的第四种可能的实现方式、或者第二方面的第五种可能的实现方式中的LC-MTC系统的小区切换装置。
实施本发明实施例，具有如下有益效果：
本发明实施例，通过根据用户设备UE的测量信息计算UE进行小区切换的触发区域，当UE进入相对应的触发区域时，根据触发区域的类型和UE当前的接入模式判断并指示UE在进行小区的切换时接入模式的保持或切换，避免了LC-MTC系统中UE在小区切换过程中因协议运行的不确定性而造成的网络系统的性能恶化的问题，提高了UE在EC接入模式和非EC接入模式的转化时的小区切换操作的稳定性和高效性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，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是本发明实施例中的一种LC-MTC系统的小区切换方法的流程示意图；
图2和图3是本发明实施例中的另一种LC-MTC系统的小区切换方法的流程示意图；
图4是本发明实施例中LC-MTC系统的小区切换方法的一个具体应用场景示意图；
图5是本发明实施例中LC-MTC系统的小区切换方法的另一个具体应用场景示意图；
图6是本发明实施例中的一种LC-MTC系统的小区切换装置的结构示意图；
图7是本发明实施例中的另一种LC-MTC系统的小区切换装置的结构示意图；
图8是本发明实施例中的一种LC-MTC系统的小区切换系统的结构示意图。
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，所描述的实施例仅仅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做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。
需要说明的是，在本发明实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
还需要说明的是，本发明实施例中的UE包括但不限于支持LC-MTC的智能手机、平板电脑、媒体播放器、智能电视、智能手环、智能穿戴设备、MP3 播放器(Moving Picture Experts Group Audio Layer III，动态影像专家压缩标准音频层面3)、MP4(Moving Picture Experts Group Audio Layer IV，动态影像专家压缩标准音频层面3)播放器、个人数字助理(Personal Digital Assistant,PDA)和膝上型便携计算机等移动通信设备。
图1是本发明实施例中的一种LC-MTC系统的小区切换方法的流程示意图，下面将结合附图1对本发明实施例中的一种LC-MTC系统的小区切换方法进行详细介绍，如图1所示，本实施例中的一种LC-MTC系统的小区切换方法可以包括以下步骤S101-步骤S103。
步骤S101：获取用户设备UE的测量信息。
具体地，所述UE支持的接入模式包括，适用于窄频带机器类型通信LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式。其中LC-MTC(Low-cost MTC，窄频带机器类型通信)，是3GPP Release 13标准化的一种窄频带物联网技术规范，仅适用1.4MHz的频宽；EC(Enhanced coverage，增强覆盖型模式)，一种适用于LC-MTC的接入模式，运行此模式的UE，其RSRP/RSRQ测量汇报机制、系统信息获取等规范均采用LC-MTC模式。而非EC接入模式则为除EC接入模式以外的无线通信模式，例如普通的2G、3G或4G等通信模式。可以理解的是，本发明中的UE既可以是支持EC接入模式的LC-MTC终端，也可能是支持LC-MTC的普通手机终端。其中，测量信息包括用户设备的测量报告值，如参考信号接收功率RSRP(Reference Signal Receiving Power)和参考信号接收质量RSRQ(ReferenceSignalReceivingQuality)值。还可以包括EC接入模式下，UE向基站汇报是否需要在较长时间内保持在EC接入模式等信息，例如estimate time in EC mode的指令。
步骤S102：根据所述测量信息计算所述UE进行小区切换的触发区域。
具体地，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域。
在优选地实施方式中，所述测量信息包括参考信号接收质量RSRQ；根据所述测量信息判断所述UE当前的接入模式；若所述UE当前的接入模式为EC接入模式，则根据测量信息中的EC接入模式下的RSRQ，计算非EC接入模式下 的RSRQ；若所述UE当前的接入模式为非EC接入模式，则根据测量信息中非EC接入模式下的RSRQ，计算EC接入模式下的RSRQ；根据所述EC接入模式下的RSRQ和非EC接入模式下的RSRQ之间的差值，计算所述UE进行小区切换的触发区域。
例如，UE_1向基站汇报了EC接入模式下的RSRQ#ec，基站根据UE_1的当前位置，估算UE的非EC接入模式下的RSRQ#normal。基于差值估算，如果UE汇报的是非EC接入模式，基站可以分析估算UE的EC接入模式的测量报告值；如果UE汇报的是EC接入模式，基站可以估算UE的非EC接入模式的测量报告值。因此通过上述方法，基站可以估算UE在EC接入模式和非EC接入模式的情况下是否会触发小区切换，并存在以下两种情况，也即对应两种触发区域：
情况1：EC接入模式会触发小区切换，非EC接入模式也会触发小区切换；
情况2：EC接入模式会触发小区切换，非EC接入模式不会触发小区切换。
其中情况1对应本发明中所涉及的第一触发区域，情况2对应本发明所涉及的第二触发区域。
优选地，对于连接态的UE，基站可以分析比较UE在EC接入模式和非EC接入模式时的测量信息中的测量报告值之间的差值。具体实现方法可以通过路损与干扰的估算，并结合历史测量报告值数据的统计信息进行计算。
步骤S103：当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
具体地，第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，当检测到UE进入该第一触发区域，且UE处于EC接入模式时，在此情况下，UE可能会在EC接入模式下或非EC接入模式下进行小区切换，若此时UE处于EC接入模式时，则该UE可能会在当前的EC接入模式下触发进行小区切换，则UE很可能已根据基站返回的切换指令开始切换，但当判断出需要进行小区切换的相邻基站不支持EC接入模式，此时切换已发生，而切换之后的相邻小区对应的相邻基站不支持EC接入模式，则会导致小区切换失败，如果切换失败后重新再次发起切换请求，将会造成ping-pong效应，势必 造成频繁的信令。因此，在该种情况下的小区切换过程中，需要判断UE需进行小区切换对应的相邻基站是否支持EC接入模式。若判断出相邻基站不支持EC接入模式，则该UE在EC接入模式下进行小区切换必然会因为无法正常接入EC接入模式而导致小区切换失败。因此为了保证UE的小区切换成功，此时服务基站应控制或指示UE在小区切换过程中，停止UE当前所处的EC接入模式并切换至非EC接入模式进行所述小区切换，以保证UE进行小区切换的可行性和稳定性。
需要说明的是，若接入模式改变受控于基站，在控制UE在小区切换过程中的接入模式保持当前接入模式时，可以通过基站对于该UE所发起的接入模式改变信令进行推迟、忽略或者拒绝，以保持UE当前的接入模式；在控制UE在小区切换过程中切换到另一种接入模式时，可对主动对UE发起的切换模式信令进行及时处理。
若接入模式改变受控于UE本身，则UE应参照以上步骤S101到步骤S104中的方法流程，对UE进行小区切换过程中的接入模式保持或切换进行主动判断和保持，只需在接入模式需切换过程中，主动向服务基站发起接入模式改变的信令。本发明对UE最终通过何种方式进行接入模式的保持或切换，不作具体限定。
本发明实施例，通过根据用户设备UE的测量信息计算UE进行小区切换的触发区域，当UE进入相对应的触发区域时，根据触发区域的类型和UE当前的接入模式判断并指示UE在进行小区的切换时接入模式的保持或切换，避免了LC-MTC系统中UE在小区切换过程中因协议运行的不确定性而造成的网络系统的性能恶化的问题，提高了UE在EC接入模式和非EC接入模式的转化时的小区切换操作的稳定性和高效性。
图2和图3是本发明实施例中的另一种LC-MTC系统的小区切换方法的流程示意图，下面将结合附图2和附图3对本发明实施例中的另一种LC-MTC系统的小区切换方法进行详细介绍，如图2和图3所示，本发明实施例中的另一种LC-MTC系统的小区切换方法可以包括以下步骤S201-步骤S208。
步骤S201：获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于窄频带机器类型通信LC-MTC的增强覆盖型EC接入模式，以及非EC接 入模式。
具体地，可以对应参考图1实施例中的方法步骤S101，在此不再赘述。
步骤S202：根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域。
具体地，可以对应参考图1实施例中的方法步骤S102，在此不再赘述。
步骤S203：当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
具体地，可以对应参考图1实施例中的方法步骤S103，在此不再赘述。
步骤S204：当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站支持EC接入模式时，则判断所述UE是否指示在预设时间段内保持EC接入模式。
具体地，当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述相邻基站支持EC接入模式，则服务基站则需要根据UE的实际情况和需求，进行小区切换时UE需要保持或切换的接入模式的判断和指示。优选地，根据所述测量信息判断所述UE是否指示在预设时间段内保持EC接入模式，所述测量信息包括当所述UE处于EC接入模式下所述UE是否在预设时间段内保持EC接入模式的指示信息，该指示信息可由UE的接入层AS层通知给UE的非接入层NAS层，UE的NAS层可以在切换发生前通知给核心网的NAS层，如移动管理节点MME。
步骤S205：若判断结果为是，则控制所述UE在小区切换过程中，保持EC接入模式进行所述小区切换。
具体地，若步骤S204中的判断结果为是，表示UE在EC接入模式下的业务需求量更大，需要在较长时间内进行EC接入模式下的业务，则指示UE在小区切换过程中一直保持EC接入模式，即无法发起非EC接入模式的业务的请求。
步骤S206a：若判断结果为否，则控制所述UE在小区切换过程中，切换至非EC接入模式进行所述小区切换。
具体地，若步骤S204中的判断结果为否，则基站分析判断该UE的切换是在非EC接入模式还是在EC接入模式下进行。而判断是在非EC接入模式还是EC接入模式下进行的依据可以是考虑核心网信令的消耗，由于在非EC接入模式下，非EC接入模式下的小区覆盖范围小、信号强，因此切换的鲁棒性相对较好，所以从切换鲁棒性和核心网信令开销的角度优先在非EC接入模式下进行小区切换。
进一步地，上述实施例中的步骤S206a中的方法流程，还可以通过以下步骤S206b中的方法流程实现。
步骤S206b：若判断结果为否，根据UE中的预存设置控制所述UE在所述预存设置对应的接入模式下进行所述小区切换。
具体地，若步骤S204中的判断结果为否，则基站分析判断该UE的切换是在正常模式还是在EC接入模式下进行。判断的依据也可以基于用户的预设的偏好设置。例如，对于LC-MTC业务频繁的UE，用户可以提前将EC接入模式预设为优先接入模式，即可以优先考虑不改变EC接入模式而进行小区切换。
步骤S207：当检测到所述UE进入所述第一触发区域，且所述UE处于非EC接入模式时，则控制所述UE在小区切换过程中，保持非EC接入模式进行所述小区切换。
具体地，第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，当UE处于非EC接入模式时，由于非EC接入模式下的小区覆盖范围小，信号强，因此切换的鲁棒性相对较好。所以从切换鲁棒性和核心网信令开销的角度优先在非EC接入模式下进行小区切换。优选地，不论是在EC接入模式还是非EC接入模式，切换过程中，应该尽可能保持该模式不变。
步骤S208：当检测到所述UE进入所述第二触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，则控制所述UE在小区切换过程中，保持所述EC接入模式进行所述小区切换。
具体地，由于在该种情况下，第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域。因此当UE进入该区域范围内时，在非EC接入模式下，不会触发小区切换的操作，所以在该情 况下只讨论UE处于EC接入模式的情况，在此种情况下，的第二触发区域，UE只有在EC接入模式下，才能成功发起并执行小区切换，因此若UE在第二触发区域内，只有保持当前的EC接入模式，才能进行小区切换，此时服务基站应该控制UE在小区切换过程中，保持所述EC接入模式进行所述小区切换，不进行其它优化处理。
在具体的应用场景中，如图4所示，图4是本发明实施例中LC-MTC系统的小区切换方法的一个具体应用场景示意图，实线区域分别为UE在非EC接入模式下的小区A和小区B的覆盖范围，虚线区域分别为UE在EC接入模式下的小区A和小区B的覆盖范围，其中小区A和小区B之间的交叠区域中UE所在的区域为第一触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，此时可依据方法步骤流程中的S101-S103或S201-S208中的方法规则进行所述UE进行小区切换过程中的接入模式的保持或切换。
在具体的应用场景中，如图5所示，图5是本发明实施例中LC-MTC系统的小区切换方法的另一个具体应用场景示意图，实线区域分别为UE在非EC接入模式下的小区A和小区B的覆盖范围，虚线区域分别为UE在EC接入模式下的小区A和小区B的覆盖范围，其中小区A和小区B之间的交叠区域中UE所在的区域为第一触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，此时可依据方法步骤流程中的S101-S103或S201-S208中的方法规则进行所述UE进行小区切换过程中的接入模式的保持或切换。具体的实现方案可以根据用户的需求或场景的实际情况进行相应的调整，本发明不一一列举。
本发明实施例，通过根据用户设备UE的测量信息计算UE进行小区切换的触发区域，当UE进入相对应的触发区域时，根据触发区域的类型和UE当前的接入模式判断并指示UE在进行小区的切换时接入模式的保持或切换，避免了LC-MTC系统中UE在小区切换过程中因协议运行的不确定性而造成的网络系统的性能恶化的问题，提高了UE在EC接入模式和非EC接入模式的转化时的小区切换操作的稳定性和高效性。
图6是本发明实施例中的一种LC-MTC系统的小区切换装置的结构示意图， 用以执行上述图1所示实施例中的一种LC-MTC系统的小区切换方法的流程。
下面将结合附图6，对本发明实施例中的一种LC-MTC系统的小区切换装置的结构进行详细介绍。该装置10可包括：获取模块101、计算模块102和第一控制模块103。
获取模块101，用于获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式。
具体地，获取模块101可以执行并完成方法步骤S101中的所有方法和流程，在此不再赘述。
计算模块102，用于根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域。
具体地，计算模块102可以执行并完成方法步骤S102中的所有方法和流程，在此不再赘述。
第一控制模块103，用于当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
具体地，第一控制模块103可以执行并完成方法步骤S103中的所有方法和流程，在此不再赘述。
本发明实施例，通过根据用户设备UE的测量信息计算UE进行小区切换的触发区域，当UE进入相对应的触发区域时，根据触发区域的类型和UE当前的接入模式判断并指示UE在进行小区的切换时接入模式的保持或切换，避免了LC-MTC系统中UE在小区切换过程中因协议运行的不确定性而造成的网络系统的性能恶化的问题，提高了UE在EC接入模式和非EC接入模式的转化时的小区切换操作的稳定性和高效性。
图7是本发明实施例中的另一种LC-MTC系统的小区切换装置的结构示意图，用以执行上述图2和图3所示实施例中的另一种LC-MTC系统的小区切换 方法的流程。
下面将结合附图7，对本发明实施例中的另一种LC-MTC系统的小区切换装置的结构进行详细介绍。该装置20可包括：获取模块201、计算模块202、第一控制模块203、第二判断模块204、第二控制模块205、第三控制模块206、第四控制模块207和第五控制模块208。所述计算模块202可包括：判断单元2021、第一计算单元2022、第二计算单元2023和第三计算单元2024。
获取模块201，用于获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
具体地，获取模块201可以执行并完成方法步骤S201中的所有方法和流程，在此不再赘述。
计算模块202可包括：判断单元2021、第一计算单元2022、第二计算单元2023和第三计算单元2024。
判断单元2021，用于根据所述测量信息判断所述UE当前的接入模式；
第一计算单元2022，用于若所述UE当前的接入模式为EC接入模式，则根据测量信息中的EC接入模式下的RSRQ，计算非EC接入模式下的RSRQ；
第二计算单元2023，用于若所述UE当前的接入模式为非EC接入模式，则根据测量信息中非EC接入模式下的RSRQ，计算EC接入模式下的RSRQ；
第三计算单元2024，用于根据所述EC接入模式下的RSRQ和非EC接入模式下的RSRQ之间的差值，计算所述UE进行小区切换的触发区域。
其中，装置中的计算模块202包含的2021到2024单元可以执行并完成方法步骤S202中的所有方法和流程，在此不再赘述。
第一控制模块203，用于当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
具体地，第一控制模块203可以执行并完成方法步骤S203中的所有方法和流程，在此不再赘述。
第二判断模块204，用于当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站支持EC接入模式时，则判断所述UE是否指示在预设时间段 内保持EC接入模式。
具体地，第二判断模块204可以执行并完成方法步骤S204中的所有方法和流程，在此不再赘述。
第二控制模块205，用于若判断结果为是，则控制所述UE在小区切换过程中，保持EC接入模式进行所述小区切换。
具体地，第二控制模块205可以执行并完成方法步骤S205中的所有方法和流程，在此不再赘述。
第三控制模块206，用于若判断结果为否，则控制所述UE在小区切换过程中，切换至非EC接入模式进行所述小区切换；或者根据UE中的预存设置控制所述UE在所述预存设置对应的接入模式下进行所述小区切换。
具体地，第三控制模块206可以执行并完成方法步骤S206a或方法步骤S206b中的所有方法和流程，在此不再赘述。
第四控制模块207，用于当检测到所述UE进入所述第一触发区域，且所述UE处于非EC接入模式时，则控制所述UE在小区切换过程中，保持非EC接入模式进行所述小区切换。
具体地，第四控制模块207可以执行并完成方法步骤S207中的所有方法和流程，在此不再赘述。
第五控制模块208，用于当检测到所述UE进入所述第二触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，则控制所述UE在小区切换过程中，保持所述EC接入模式进行所述小区切换。
具体地，第五控制模块208可以执行并完成方法步骤S208中的所有方法和流程，在此不再赘述。
本发明实施例，通过根据用户设备UE的测量信息计算UE进行小区切换的触发区域，当UE进入相对应的触发区域时，根据触发区域的类型和UE当前的接入模式判断并指示UE在进行小区的切换时接入模式的保持或切换，避免了LC-MTC系统中UE在小区切换过程中因协议运行的不确定性而造成的网络系统的性能恶化的问题，提高了UE在EC接入模式和非EC接入模式的转化时的小区切换操作的稳定性和高效性。
图8是本发明实施例中的一种LC-MTC系统的小区切换系统的结构示意图， LC-MTC系统的小区切换系统30包括UE 301与基站302，其中
所述UE301支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
所述基站302用于获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于窄频带机器类型通信LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域；当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
具体地，LC-MTC系统的小区切换系统30中的基站302包括图6至图7的LC-MTC系统的小区切换装置，其中具体如何实现，可以对应参考上述装置项实施例的描述，在此不再赘述。
本发明实施例，通过根据用户设备UE的测量信息计算UE进行小区切换的触发区域，当UE进入相对应的触发区域时，根据触发区域的类型和UE当前的接入模式判断并指示UE在进行小区的切换时接入模式的保持或切换，避免了LC-MTC系统中UE在小区切换过程中因协议运行的不确定性而造成的网络系统的性能恶化的问题，提高了UE在EC接入模式和非EC接入模式的转化时的小区切换操作的稳定性和高效性。
应当理解的是，本文中虽然使用术语第一、第二等描述区域、单元或模块，但是这些区域、单元或模块应该不受这些术语的限制，这些术语仅被用于彼此区分。还应当理解的是，在本文中使用的，除非上下文清楚地支持例外情况，单数形式“一个”(“a”、“an”、和“the”)旨在也包括复数形式。还应该理解的是，在本文中使用的“和/或”是指包括一个或者一个以上相关联地列出的项目的任意和所有可能组合。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于计算机 可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (14)

  1. 一种LC-MTC系统的小区切换方法，其特征在于，包括：
    获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于窄频带机器类型通信LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
    根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域；
    当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
  2. 如权利要求1所述的方法，其特征在于，所述测量信息包括参考信号接收质量RSRQ；
    所述根据所述测量信息计算所述UE进行小区切换的触发区域，包括：
    根据所述测量信息判断所述UE当前的接入模式；
    若所述UE当前的接入模式为EC接入模式，则根据测量信息中的EC接入模式下的RSRQ，计算非EC接入模式下的RSRQ；
    若所述UE当前的接入模式为非EC接入模式，则根据测量信息中非EC接入模式下的RSRQ，计算EC接入模式下的RSRQ；
    根据所述EC接入模式下的RSRQ和非EC接入模式下的RSRQ之间的差值，计算所述UE进行小区切换的触发区域。
  3. 如权利要求1所述的方法，其特征在于，所述测量信息包括当所述UE处于EC接入模式下所述UE是否在预设时间段内保持EC接入模式的指示信息；
    所述方法，还包括：
    当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站支持 EC接入模式时，则判断所述UE是否指示在预设时间段内保持EC接入模式；
    若判断结果为是，则控制所述UE在小区切换过程中，保持EC接入模式进行所述小区切换。
  4. 如权利要求3所述的方法，其特征在于，所述判断所述UE是否指示在预设时间段内保持EC接入模式之后，还包括：
    若判断结果为否，则控制所述UE在小区切换过程中，切换至非EC接入模式进行所述小区切换；或者根据UE中的预存设置控制所述UE在所述预存设置对应的接入模式下进行所述小区切换。
  5. 如权利要求1-3任意一项所述的方法，其特征在于，所述方法，还包括：
    当检测到所述UE进入所述第一触发区域，且所述UE处于非EC接入模式时，则控制所述UE在小区切换过程中，保持非EC接入模式进行所述小区切换。
  6. 如权利要求1-3任意一项所述的方法，其特征在于，所述方法，还包括：
    当检测到所述UE进入所述第二触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，则控制所述UE在小区切换过程中，保持所述EC接入模式进行所述小区切换。
  7. 一种LC-MTC系统的小区切换装置，其特征在于，包括：
    获取模块，用于获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
    计算模块，用于根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域；
    第一控制模块，用于当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止 EC接入模式并切换至非EC接入模式进行所述小区切换。
  8. 如权利要求7所述的装置，其特征在于，所述测量信息包括参考信号接收质量RSRQ；
    所述计算模块，包括：
    判断单元，用于根据所述测量信息判断所述UE当前的接入模式；
    第一计算单元，用于若所述UE当前的接入模式为EC接入模式，则根据测量信息中的EC接入模式下的RSRQ，计算非EC接入模式下的RSRQ；
    第二计算单元，用于若所述UE当前的接入模式为非EC接入模式，则根据测量信息中非EC接入模式下的RSRQ，计算EC接入模式下的RSRQ；
    第三计算单元，用于根据所述EC接入模式下的RSRQ和非EC接入模式下的RSRQ之间的差值，计算所述UE进行小区切换的触发区域。
  9. 如权利要求7所述的装置，其特征在于，所述测量信息包括当所述UE处于EC接入模式下所述UE是否在预设时间段内保持EC接入模式的指示信息；
    所述装置，还包括：
    第二判断模块，用于当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站支持EC接入模式时，则判断所述UE是否指示在预设时间段内保持EC接入模式；
    第二控制模块，用于若判断结果为是，则控制所述UE在小区切换过程中，保持EC接入模式进行所述小区切换。
  10. 如权利要求9所述的装置，其特征在于，所述装置，还包括：
    第三控制模块，用于若判断结果为否，则控制所述UE在小区切换过程中，切换至非EC接入模式进行所述小区切换；或者根据UE中的预存设置控制所述UE在所述预存设置对应的接入模式下进行所述小区切换。
  11. 如权利要求7-9任意一项所述的装置，其特征在于，所述装置，还包括：
    第四控制模块，用于当检测到所述UE进入所述第一触发区域，且所述UE 处于非EC接入模式时，则控制所述UE在小区切换过程中，保持非EC接入模式进行所述小区切换。
  12. 如权利要求7-9任意一项所述的装置，其特征在于，所述装置，还包括：
    第五控制模块，用于当检测到所述UE进入所述第二触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，则控制所述UE在小区切换过程中，保持所述EC接入模式进行所述小区切换。
  13. 一种LC-MTC系统的小区切换系统，包括UE和基站，其特征在于，所述UE支持的接入模式包括，适用于LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；
    所述基站用于获取用户设备UE的测量信息，所述UE支持的接入模式包括，适用于窄频带机器类型通信LC-MTC的增强覆盖型EC接入模式，以及非EC接入模式；根据所述测量信息计算所述UE进行小区切换的触发区域，所述触发区域包括第一触发区域和第二触发区域，所述第一触发区域为所述UE在EC接入模式和非EC接入模式下均可进行小区切换的区域，所述第二触发区域为所述UE在EC接入模式下可进行小区切换但在非EC接入模式下不可进行小区切换的区域；当检测到所述UE进入所述第一触发区域，且所述UE处于适用于LC-MTC的EC接入模式时，若判断出所述UE需要进行小区切换对应的相邻基站不支持EC接入模式，则控制所述UE在小区切换过程中，停止EC接入模式并切换至非EC接入模式进行所述小区切换。
  14. 如权利要求13所述的系统，其特征在于，所述基站包括如权利要求7-12任一项所述的LC-MTC系统的小区切换装置。
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