WO2012119433A1 - 小区切换方法、基站、用户设备及通信*** - Google Patents

小区切换方法、基站、用户设备及通信*** Download PDF

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Publication number
WO2012119433A1
WO2012119433A1 PCT/CN2011/079211 CN2011079211W WO2012119433A1 WO 2012119433 A1 WO2012119433 A1 WO 2012119433A1 CN 2011079211 W CN2011079211 W CN 2011079211W WO 2012119433 A1 WO2012119433 A1 WO 2012119433A1
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WO
WIPO (PCT)
Prior art keywords
base station
measurement report
handover
command
cell
Prior art date
Application number
PCT/CN2011/079211
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English (en)
French (fr)
Inventor
赵卫星
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/079211 priority Critical patent/WO2012119433A1/zh
Priority to CN201180001727.6A priority patent/CN102369760B/zh
Publication of WO2012119433A1 publication Critical patent/WO2012119433A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • 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
    • 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
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a cell handover method, a base station, a user equipment, and a communication system. Background technique
  • the UE User Equipment
  • the system transfers the communication link between the UE and the original cell to the new cell, and the process is handover.
  • the base station can send a measurement configuration to the UE. After receiving the measurement configuration, the UE performs the measurement and sends a measurement report to the base station. The base station can determine whether to perform the cell handover by using the measurement report reported by the UE. After the base station decides that the handover is required, the UE sends a handover command by the air interface to trigger the UE to perform the handover.
  • the present invention provides a cell handover method, a base station, a user equipment, and a communication system, which can ensure the continuity of a user's call and improve the quality of the user's call.
  • An aspect of the present invention provides a cell handover method, including:
  • the base station receives the first measurement report reported by the UE, and sends a first handover command to the UE; the base station receives the second measurement report reported by the UE, where the second measurement report is that the UE does not receive the Reported when the first switching command is described;
  • the base station cancels the handover procedure triggered by the first measurement report according to the second measurement report; after the base station determines to perform cell handover on the UE according to the second measurement report,
  • the UE sends a second handover command.
  • Another aspect of the present invention provides a cell handover method, including: The UE sends a first measurement report to the base station;
  • the second measurement report is reported to the base station, where the first handover command is sent by the base station after receiving the first measurement report;
  • the second measurement report determines that the UE is sent after performing cell handover;
  • the UE performs cell handover according to the second handover command.
  • a base station including:
  • a transceiver configured to receive a first measurement report reported by the UE, and send a first handover command to the UE; receive a second measurement report reported by the UE, where the second measurement report is that the UE does not receive the The first switching command is reported; and the second switching command is sent to the UE according to the instruction of the processor; the processor is configured to: if the transceiver receives the second measurement report reported by the UE, cancel the The first measurement report triggers a handover procedure; and after determining to perform cell handover on the UE according to the second measurement report, instructing the transceiver to send a handover command to the UE.
  • Another aspect of the present invention provides a user equipment, including:
  • a transmitter configured to send a first measurement report to the base station, and send a second measurement report to the base station when the receiver does not receive the first handover command sent by the base station, where the first handover command is The base station sends after receiving the first measurement report;
  • a receiver configured to receive a second handover command sent by the base station, where the second handover command is received by the base station, and the handover process triggered by the first measurement report is cancelled, according to the The second measurement report determines that the UE is sent after performing cell handover;
  • a processor configured to perform cell handover according to the handover command received by the receiver.
  • Another aspect of the present invention also provides a communication system including the above base station and user equipment.
  • the cell handover method, the base station, the user equipment, and the communication system provided by the embodiment of the present invention the base station receives the first measurement report reported by the user equipment UE, and sends a first handover command to the UE; Receiving, by the station, the second measurement report reported by the UE, where the second measurement report is reported when the UE does not receive the first handover command; and the base station cancels the first measurement according to the second measurement report. Reporting the handover procedure triggered by the base station; after the base station determines to perform cell handover on the UE according to the second measurement report, the base station sends a second handover command to the UE.
  • the embodiment of the present invention can cancel the handover process triggered by the first measurement report according to the second measurement report, if the user equipment does not receive the first handover command and continue to report the measurement report, to avoid
  • the base station initiates a user release process, causing the user to drop the call, and determining to continue to switch the UE according to the second measurement report, thereby ensuring continuity of the call of the user and improving the quality of the call of the user.
  • FIG. 1 is a flowchart of a cell handover method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another cell handover method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of still another method for cell handover according to Embodiment 3 of the present invention.
  • FIG. 4 and FIG. 5 are schematic structural diagrams of a base station according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDM Orthogonal Frequency-division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • a CDMA network can implement wireless technologies such as universal terrestrial radio access (UTRA), CDMA2000, etc.
  • UTRA can include variants of CDMA (WCDMA) and other CDMA.
  • CDMA2000 can cover Interim Standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
  • TDMA networks can implement wireless technologies such as global system for mobile communication (GSM).
  • GSM global system for mobile communication
  • the network can implement such as evolved universal terrestrial access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA, etc.
  • Wireless technology UTRA and E-UTRA are UMTS and UMTS evolved versions.
  • 3GPP is a new version of UMTS that uses E-UTRA in long term evolution (LTE) and LTE Advanced (LTE-A).
  • LTE long term evolution
  • LTE-A LTE Advanced
  • E-UTRA, UMTS, LTE, LTE-A, and GSM are documented in the documentation of the 3GPP standards organization. Documents for CDMA2000 and UMB in the 3GPP2 standards organization There is described below. Technique described embodiment of the present invention may also be applied to the above-described wireless networks and radio technologies.
  • a base station may be a station that communicates with a user equipment (UE) or other communication station, such as a relay station, and the base station may provide communication coverage of a specific physical area.
  • UE user equipment
  • a base station can support one or more cells.
  • UEs may be distributed throughout the wireless network, and each UE may be static or mobile.
  • a UE may be referred to as a terminal, a mobile station, a subscriber unit, a station, or the like.
  • the UE can be a cellular phone, a personal digital assistant (PDA), a wireless modem (modem), a wireless communication device, a handheld device, a laptop computer, a cordless computer. Cordless phone, wireless local directional (WLL) station, etc.
  • PDA personal digital assistant
  • modem wireless modem
  • WLL wireless local directional
  • this embodiment provides a cell handover method, where the method includes:
  • the base station receives the first measurement report reported by the UE, and sends a first handover command to the UE.
  • the base station receives a second measurement report reported by the UE, where the second measurement report is reported by the UE if the first handover command is not received.
  • the base station cancels the switching process triggered by the first measurement report according to the second measurement report.
  • the base station After the base station performs cell handover on the UE according to the second measurement report, the base station sends a second handover command to the UE.
  • the base station may not need to send the second handover command to the UE.
  • the canceling the handover process of the first measurement report triggering may include:
  • the target base station may be released as an air interface resource prepared by the UE handover, for example,
  • the information includes the target cell identifier, the carrier frequency, the uplink and downlink resource configuration information, or the temporary identifier of the cell wireless network.
  • the source base station may further release the forwarding data of the UE, where the forwarding data may include basic configuration parameters of the UE provided when the source base station sends a handover request to the target base station.
  • this embodiment provides another method for cell handover, where the method includes:
  • the UE sends a first measurement report to the base station.
  • the UE does not receive the first handover command sent by the base station, report the second measurement report to the base station, where the first handover command is sent by the base station after receiving the first measurement report.
  • the UE receives a second handover command sent by the base station, where the second handover command receives the second measurement report by the base station, and cancels a handover process triggered by the first measurement report. And determining, according to the second measurement report, that the UE performs cell handover and then sends.
  • the UE performs cell handover according to the second handover command.
  • the UE stops uploading the measurement report to the base station after receiving the second handover command.
  • the information included in the first measurement report and the second measurement report may be identical; or the information included in the first measurement report and the second measurement report may be partially the same.
  • the information included in the first switching command and the second switching command may be identical; or the information included in the first switching command and the second switching command may be partially the same.
  • the base station sends a first handover command to the UE according to the first measurement report reported by the UE, and triggers a handover action. If the signal quality of the source cell is deteriorated, the UE may not receive the first handover command, and the UE may continue to send a measurement report to the UE, for example, the second measurement report, and the base station receives the second measurement sent by the UE. After the report, the handover action of the first handover command may be cancelled, and the handover may be performed according to the second measurement report. If the UE is determined to be switched, the UE may be sent a second. Switching the command, so the UE can perform cell handover according to the second handover command.
  • the embodiment of the present invention can cancel the handover process triggered by the first measurement report when the user equipment does not receive the first handover command and continue to report the measurement report, and can prevent the UE from continuously transmitting the measurement report. It saves resources and UE power consumption.
  • the base station can continue to perform the handover to the UE by the second handover command, and the UE is switched to the target cell, so that the base station in the prior art does not process the measurement report that continues to be sent after the UE does not receive the first handover command.
  • the base station initiates a user release process, and the user drops the call, thereby ensuring the continuity of the user's call and improving the quality of the user's call.
  • this embodiment provides a cell handover method, where the method includes:
  • the UE reports the first measurement report to the source base station.
  • the UE may perform measurement according to the measurement configuration sent by the source base station, and then report the measurement report to the source base station, and the measurement report may be recorded as the first measurement report.
  • the source base station sends a handover request to a target base station where the target cell is located.
  • the source base station may perform a handover decision according to the first measurement report reported by the UE. A decision is made to confirm whether to switch the UE. If it is confirmed that the UE needs to be handed over, the handover request may be sent to the target base station where the target cell is located.
  • the target base station sends a handover request acknowledgement to the source base station.
  • the target base station may send, by using a handover request acknowledgement, information such as a target cell identifier, a carrier frequency, an uplink/downlink resource configuration information, or a temporary identifier of a cell radio network for the UE handover to the source base station.
  • information such as a target cell identifier, a carrier frequency, an uplink/downlink resource configuration information, or a temporary identifier of a cell radio network for the UE handover to the source base station.
  • the source base station sends a first handover command to the UE.
  • the source base station may send a handover command to the UE, which may be recorded as a first handover command.
  • the second measurement report may be a measurement report obtained after the UE is re-measured, and is also a measurement report obtained by the previous measurement, for example, a first measurement report, and therefore, the information included in the second measurement report may be
  • the first measurement 4 is the same, or may be partially the same.
  • the source base station performs a handover decision according to the second measurement report.
  • the source base station After receiving the second measurement report, the source base station performs a handover decision to determine whether to perform cell handover on the UE.
  • the source base station cancels the handover process triggered by the first measurement report.
  • the canceling process of the first measurement report triggering by the source base station may include: sending a handover cancellation command to the target base station, where the handover procedure for canceling the triggering of the first measurement report is cancelled, after the target base station receives the handover cancellation command
  • the air interface resources prepared for the UE handover may be deciphered, for example, the target cell identifier, the carrier frequency, the uplink and downlink resource configuration information, or the temporary information of the cell wireless network may be included.
  • the source base station may release the forwarding data of the UE, where the forwarding data is a basic configuration parameter of the UE that is provided when the source base station sends a handover request to the target base station.
  • the step 306 and the step 307 may be performed without a step sequence. For example, step 307 may be performed before step 306, or step 306 and step 307 may be performed at the same time.
  • the source base station sends a second handover command to the user equipment.
  • the UE may send a handover command to the UE, where the handover command may be recorded as a second handover command.
  • the information contained in the second switching command and the first switching command may be identical or partially identical.
  • the UE may perform cell handover.
  • the UE when the UE does not receive the first handover command and continues to report the measurement report, the UE may cancel the first handover operation that is not completed by the first handover command, and may prevent the UE from continuously transmitting the measurement report. It saves resources and UE power consumption.
  • the base station can continue to perform the handover to the UE by the second handover command, and the UE is switched to the target cell, so that the base station in the prior art does not process the measurement report that continues to be sent after the UE does not receive the first handover command.
  • the base station initiates a user release process, and the user drops the call, thereby ensuring the continuity of the user's call and improving the quality of the user's call.
  • the base station according to the present invention may include:
  • the transceiver 41 is configured to receive a first measurement report reported by the UE, and send a first handover command to the UE, and receive a second measurement report reported by the UE, where the second measurement report is that the UE does not receive the The first switching command is reported; and the second switching command is sent to the UE according to the instruction of the processor 42.
  • the processor 42 is configured to: if the transceiver 41 receives the second measurement report reported by the UE, cancel the handover procedure triggered by the first measurement report; and determine, according to the second measurement report, the UE After the cell handover is performed, the transceiver 41 is instructed to send a handover command to the UE. If the transceiver receives the second measurement report reported by the UE, when the handover process triggered by the first measurement is cancelled, as shown in FIG. 5, the processor 42 includes:
  • the handover cancellation command unit 422 is configured to send a handover cancellation command to the target base station, where the handover cancellation command is used to indicate that the target base station cancels the handover procedure triggered by the first measurement report.
  • the processor 42 may further include a release unit 421, configured to release the forwarding data of the UE, where the forwarding data is a basic configuration parameter of the UE that is provided when the source base station sends a handover request to the target base station.
  • a release unit 421 configured to release the forwarding data of the UE, where the forwarding data is a basic configuration parameter of the UE that is provided when the source base station sends a handover request to the target base station.
  • the transceiver 41 sends a first handover command to the UE according to the first measurement report reported by the UE.
  • the transceiver 41 receives the second measurement report reported by the UE, where the second measurement report is If the UE receives the second measurement report that is not reported by the UE, the processor 42 cancels the handover process triggered by the first measurement report; After the cell is switched to the UE according to the second measurement report, the transceiver 41 is instructed to send a handover command to the UE.
  • the transceiver 41 sends a second handover command to the UE according to the instruction of the processor 42. .
  • the embodiment of the present invention can cancel the handover process triggered by the first measurement report when the UE does not receive the first handover command, and can prevent the UE from continuously transmitting the measurement report, thereby saving resources and UE power consumption.
  • the base station can continue to perform the handover to the UE by the second handover command, and the UE is switched to the target cell, so that the base station in the prior art does not process the measurement report that continues to be sent after the UE does not receive the first handover command.
  • the base station initiates a user release process, and the user drops the call, thereby ensuring the continuity of the user's call and improving the quality of the user's call.
  • the embodiment provides a user equipment, where the user equipment includes: a transmitter 51, configured to send a first measurement report to a base station, and not received by the base station by the receiver 52. And transmitting, by the base station, a second measurement report, where the first handover command is sent by the base station after receiving the first measurement report.
  • the receiver 52 is configured to receive a second handover command sent by the base station, where the second handover command is received by the base station, and the handover process triggered by the first measurement report is cancelled, according to The second measurement report determines to perform cell handover after the UE is sent.
  • the processor 53 is configured to perform cell handover according to the handover command received by the receiver 52.
  • the transmitter 51 may stop uploading the measurement report to the base station.
  • the transmitter 51 sends a first measurement report to the base station, and sends a second measurement report to the base station when the receiver 52 does not receive the first handover command sent by the base station.
  • the first handover command is sent by the base station after receiving the first measurement report;
  • the receiver 52 receives a second handover command sent by the base station, where the second handover command is received by the base station And a second measurement report, canceling the handover procedure triggered by the first measurement report, determining, according to the second measurement report, performing cell handover after the UE is sent; and the processor 53 performing cell according to the handover command received by the receiver 52.
  • Switch the transmitter 51 sends a first measurement report to the base station, and sends a second measurement report to the base station when the receiver 52 does not receive the first handover command sent by the base station.
  • the first handover command is sent by the base station after receiving the first measurement report;
  • the receiver 52 receives a second handover command sent by the base station, where the second handover command is received by the base
  • the embodiment of the present invention can cancel the handover process triggered by the first measurement report when the UE does not receive the first handover command, and can avoid the UE continuously sending the measurement report, thereby saving resources and UE power consumption.
  • the base station can continue to perform the handover to the UE by the second handover command, and the UE is switched to the target cell, so that the base station in the prior art does not process the measurement report that continues to be sent after the UE does not receive the first handover command.
  • the base station initiates a user release process, and the user drops the call, thereby ensuring the continuity of the user's call and improving the quality of the user's call.
  • the base station provided by the embodiment of the present invention may implement the foregoing method embodiments.
  • the cell switching method, the base station, and the user equipment provided by the embodiment of the present invention may be applicable to switching, but not limited to, the cell where the user equipment is located.
  • the embodiment of the invention further provides a communication system, which may include a base station and a UE.
  • the communication system can implement the cell handover method provided by the embodiment shown in FIG. 1, 2 or FIG. 3, and the base station in the communication system can refer to the base station provided in the embodiment shown in FIG. Referring to the UE provided in the embodiment shown in FIG. 6, it is not described here.
  • 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小区切换方法、基站、用户设备及通信***，涉及通信技术领域，解决了现有技术中由于切换小区时源基站侧的信号质量变差，导致用户设备接收不到切换命令，之后源基站发起用户释放，导致用户掉话的问题。所述方法包括：基站接收用户设备UE上报的第一测量报告，向所述UE下发第一切换命令；所述基站接收所述UE上报的第二测量报告，所述第二测量报告为所述UE若没有接收到所述第一切换命令时上报；基站根据所述第二测量报告，取消所述第一测量报告触发的切换流程；所述基站根据所述第二测量报告判定对所述UE进行小区切换后，向所述UE下发第二切换命令。本发明适用于对用户设备所在的小区进行切换。

Description

小区切换方法、 基站、 用户设备及通信*** 技术领域
本发明涉及通信技术领域， 特别涉及一种小区切换方法、 基站、 用户设 备及通信***。 背景技术
正在使用网络服务的 UE ( User Equipment, 用户设备 )从一个小区移动到 另一个小区， 或由于无线传输业务负荷量调整、 激活操作维护、 设备故障等 原因， 为了保证通信的连续性和服务的质量， ***要将该 UE与原小区的通信 链路转移到新的小区上， 这个过程就是切换。
在切换过程中， 基站可以向 UE发送测量配置。 UE收到测量配置后， 进行 测量并向基站发送测量报告， 基站可以通过 UE上报的测量报告决策是否执行 小区切换， 当基站判决需要切换后， 由空口下发切换命令， 触发 UE进行切换。
在现有技术中， 在小区切换过程中， 容易导致用户掉话， 影响用户通话 质量。 发明内容
本发明提供了一种小区切换方法、 基站、 用户设备及通信***， 可以保 证用户通话的连续性， 提升用户通话质量。
本发明一方面提供了一种小区切换方法， 包括：
基站接收 UE上报的第一测量报告， 向所述 UE下发第一切换命令； 所述基站接收所述 UE上报的第二测量报告，所述第二测量报告为所述 UE 若没有接收到所述第一切换命令时上报；
基站根据所述第二测量报告， 取消所述第一测量报告触发的切换流程； 所述基站根据所述第二测量报告判定对所述 UE进行小区切换后， 向所述
UE下发第二切换命令。
本发明另一方面又提供了一种小区切换方法， 包括： UE向基站发送第一测量报告；
所述 UE若没有接收到所述基站发送的第一切换命令， 向所述基站上报第 二测量报告， 所述第一切换命令由所述基站在接收到所述第一测量报告后发 送；
所述 UE接收所述基站发送的第二切换命令， 所述第二切换命令由所述基 站在接收到所述第二测量报告， 取消所述第一测量报告触发的切换流程， 根 据所述第二测量报告判定对所述 UE进行小区切换后发送；
所述 UE根据所述第二切换命令进行小区切换。
本发明另一方面还提供了一种基站， 包括：
收发器，用于接收 UE上报的第一测量报告，向所述 UE下发第一切换命令； 接收 UE上报的第二测量报告，所述第二测量报告为所述 UE若没有接收到所述 第一切换命令时上报； 并根据处理器的指示， 向所述 UE下发第二切换命令； 处理器， 用于若所述收发器接收到所述 UE上报的第二测量报告， 取消所 述第一测量报告触发的切换流程； 并且在根据所述第二测量报告判定对所述 UE进行小区切换后， 指示所述收发器向 UE下发切换命令。
本发明另一方面还提供了一种用户设备， 包括：
发射器， 用于向基站发送第一测量报告， 并在接收器没有接收到所述基 站发送的第一切换命令时， 向所述基站发送第二测量报告， 所述第一切换命 令由所述基站在接收到所述第一测量报告后发送；
接收器， 用于接收所述基站发送的第二切换命令， 所述第二切换命令由 所述基站在接收到所述第二测量报告， 取消所述第一测量报告触发的切换流 程， 根据所述第二测量报告判定对所述 UE进行小区切换后发送；
处理器， 用于根据所述接收器接收的切换命令进行小区切换。
本发明另一方面还提供了一种包含上述基站和用户设备的通信***。 本发明实施例提供的小区切换方法、 基站、 用户设备和通信***， 基站 接收用户设备 UE上报的第一测量报告， 向所述 UE下发第一切换命令； 所述基 站接收所述 UE上报的第二测量报告，所述第二测量报告为所述 UE若没有接收 到所述第一切换命令时上报； 基站根据所述第二测量报告， 取消所述第一测 量报告触发的切换流程； 所述基站根据所述第二测量报告判定对所述 UE进行 小区切换后， 向所述 UE下发第二切换命令。 与现有技术相比， 本发明实施例 能够在用户设备若未收到第一切换命令、 继续上报测量报告时， 根据所述第 二测量报告取消所述第一测量报告触发的切换流程， 避免了基站发起用户释 放流程，导致用户掉话，根据所述第二测量报告判定继续对所述 UE进行切换， 从而保证用户通话的连续性， 提升用户通话质量。 附图说明
为了更清楚地说明本发明实施例中的技术方案， 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它的附图。
图 1为本发明实施例提供的一种小区切换方法流程图；
图 2为本发明实施例提供的另一种小区切换方法流程图；
图 3为本发明实施例三提供的又一种小区切换方法流程图；
图 4、 图 5为本发明实施例提供的基站结构示意图；
图 6为本发明实施例提供的用户设备结构示意图。
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它实施例 , 都属于本发明保护的范围。
为使本发明技术方案的优点更加清楚， 下面结合附图和实施例对本发明 作详细说明。
本发明实施例提供的技术方案可以应用于各种无线通信网络， 例如码分 多址( Code Division Multiple Access, CDMA )、时分多址( Time division multiple access, TDMA )、 频分多址 ( Frequency Division Multiple Access, FDMA )、 正交频分多址 ( Orthogonal frequency-division multiple access, OFDMA )、 单载 波频分多址（single carrier FDMA, SC-FDMA )和其它网络等。 术语 "网络，， 和 "***" 可以相互替换。 CDMA 网络可以实现例如通用无线陆地接入 ( universal terrestrial radio access, UTRA ), CDMA2000等无线技术。 UTRA 可以包括 CDMA ( WCDMA )和其他 CDMA的变形。 CDMA2000可以覆盖 临时标准（ Interim Standard, IS ) 2000 ( IS-2000 ), IS-95和 IS-856标准。 TDMA 网络可以实现例如全球移动通信*** （ global system for mobile communication, GSM )等无线技术。 OFDMA 网络可以实现诸如演进通用无 线陆地接入（ evolved UTRA, E-UTRA )、超级移动宽带（ ultra mobile broadband, UMB )、 IEEE 802.11 ( Wi-Fi ), IEEE 802.16 ( WiMAX ), IEEE 802.20, Flash OFDMA等无线技术。 UTRA和 E-UTRA是 UMTS以及 UMTS演进版本。 3GPP 在长期演进 ( long term evolution, LTE )和 LTE高级（ LTE Advanced, LTE-A ) 是使用 E-UTRA的 UMTS的新版本。 UTRA、 E-UTRA, UMTS , LTE、 LTE-A 和 GSM在 3GPP标准组织的文档中有记载描述。 CDMA2000和 UMB在 3GPP2 标准组织的文档中有记载描述。 本发明实施例描述的技术也可以应用到上述 所述的无线网络和无线技术中。
在本发明实施例中， 基站 （ base station, BS )可以是与用户设备（ user equipment, UE )或其它通信站点， 如中继站点， 进行通信的站点， 基站可以 提供特定物理区域的通信覆盖。 基站可以支持一个或多个小区。
在本发明实施例中， UE可以分布于整个无线网络中， 每个 UE可以是静 态的或移动的。 UE可以称为终端（terminal ), 移动台 （ mobile station ), 用户 单元 ( subscriber unit ),站台 ( station )等。 UE可以为虫奪窝电话 ( cellular phone ), 个人数字助理（ personal digital assistant, PDA ), 无线调制解调器（modem ), 无线通信设备， 手持设备（handheld ), 膝上型电脑 （laptop computer ), 无绳 电话 ( cordless phone ), 无线本地环路 ( wireless local loo , WLL ) 台等。 如图 1所示， 本实施例提供了一种小区切换方法， 所述方法包括：
101、 基站接收 UE上报的第一测量报告， 向所述 UE下发第一切换命令。
102、所述基站接收所述 UE上报的第二测量报告， 所述第二测量报告为所 述 UE若没有接收到所述第一切换命令时上报。
103、 基站根据所述第二测量报告， 取消所述第一测量报告触发的切换流 程。
104、所述基站根据所述第二测量报告判定对所述 UE进行小区切换后， 向 所述 UE下发第二切换命令。
在本发明实施例中， 若所述基站根据所述第二测量报告判断不对所述 UE 进行小区切换， 则所述基站可以无需向所述 UE下发所述第二切换命令。
在本发明实施例中， 所述取消所述第一测量报告触发的切换流程可以包 括：
向目标基站发送切换取消 （ handover cancel )命令， 用于取消第一测量报 告触发的切换流程， 目标基站在接收到所述切换取消命令后， 可以译放为 UE 切换所准备的空口资源， 例如可以包括目标小区标识、 载频、 上下行资源配 置信息， 或者小区无线网络临时标识等信息。 所述源基站还可以译放所述 UE 的转发数据， 所述转发数据可以包括源基站向目标基站发送切换请求时所提 供的 UE的基本配置参数。
如图 2所示， 本实施例提供了另一种小区切换方法， 所述方法包括：
201、 UE向基站发送第一测量报告。
202、所述 UE若没有接收到所述基站发送的第一切换命令， 向基站上报第 二测量报告， 所述第一切换命令由所述基站在接收到所述第一测量报告后发 送。
203、所述 UE接收所述基站发送的第二切换命令， 所述第二切换命令由所 述基站在接收到所述第二测量报告， 取消所述第一测量报告触发的切换流程 , 根据所述第二测量报告判定对所述 UE进行小区切换后发送。
204、 所述 UE根据所述第二切换命令进行小区切换。
其中， UE在接收到第二切换命令后， 停止向所述基站上传测量报告。 其中， 所述第一测量报告和所述第二测量报告包含的信息可以完全相同； 或者， 所述第一测量报告和所述第二测量报告包含的信息可以部分相同。 所 述第一切换命令和所述第二切换命令包含的信息可以完全相同； 或者， 所述 第一切换命令和所述第二切换命令包含的信息可以部分相同。
本发明实施例提供的小区切换方法， 基站根据 UE上报的第一测量报告向 所述 UE下发第一切换命令， 触发切换动作。 若源小区的信号质量变差， 此时 UE可能会接收不到所述第一切换命令， UE可以会继续向 UE发送测量报告， 例如第二测量报告， 基站在接收到 UE发送的第二测量报告后， 可以取消掉第 一切换命令未完成的切换动作， 并可以根据所述第二测量报告确定是否对所 述 UE进行切换， 若确定对 UE进行切换， 可以向所述 UE下发第二切换命令， 因而该 UE可以根据所述第二切换命令进行小区切换。 与现有技术相比， 本发 明实施例能够在用户设备若未收到第一切换命令、 继续上报测量报告时， 取 消所述第一测量报告触发的切换流程， 可以避免 UE持续发送测量报告， 节省 了资源与 UE的功耗。 并且基站可以通过下发第二切换命令， 继续对 UE进行切 换， 将 UE切换到目标小区， 避免了现有技术中基站对于 UE未收到第一切换命 令后继续发送的测量报告不做处理， 而导致基站发起用户译放流程， 用户掉 话， 从而保证用户通话的连续性， 提升用户通话质量。
如图 3所示， 本实施例提供了一种小区切换方法， 所述方法包括：
301、 UE向源基站上报第一测量报告。
例如， UE可以根据源基站发送的测量配置进行测量， 然后向所述源基站 上报测量报告， 该测量报告可以记作第一测量报告。
302、 所述源基站向目标小区所处的目标基站发送切换请求。
所述源基站可以根据 UE上报的第一测量报告进行切换判决 ( handover decision ), 确认是否对该 UE进行切换， 若确认需要对该 UE进行切换， 则可以 向所述目标小区所处的目标基站发送切换请求。
303、 目标基站向源基站发送切换请求确认。
所述目标基站可以通过切换请求确认， 将用于 UE切换的目标小区标识、 载频、 上下行资源配置信息， 或者小区无线网络临时标识等信息发送给源基 站。
304、 源基站向所述 UE下发第一切换命令。
所述源基站在接收到所述目标基站发送的切换请求确认后， 可以向所述 UE发送切换命令， 可以记作第一切换命令。
305、如果所述 UE没有接收到所述第一切换命令， 向所述源基站上报第二 测量报告。
如果所述 UE当前所在的小区的信号质量变差， 没有接收所述源基站发送 的切换命令， 则所述 UE继续向源基站发送测量报告，可以记作第二测量报告。 所述第二测量报告可以为 UE经过重新测量后得到的测量报告， 也而已为之前 测量得到的测量报告， 例如第一测量报告， 因此， 所述第二测量报告所包含 的信息可以和所述第一测量 4艮告相同， 或者可以部分相同。
306、 源基站根据所述第二测量报告， 进行切换判决。
所述源基站在接收到第二测量报告后， 进行切换判决， 判定对所述 UE是 否进行小区切换。
307、 源基站取消所述第一测量报告触发的切换流程。
所述源基站取消所述第一测量报告触发的切换流程， 可以包括： 向目标 基站发送切换取消命令， 用于取消第一测量报告触发的切换流程， 目标基站 在接收到所述切换取消命令后， 可以译放为 UE切换所准备的空口资源， 例如 可以包括目标小区标识、 载频、 上下行资源配置信息， 或者小区无线网络临 时标识等信息。 所述源基站可以译放所述 UE的转发数据， 所述转发数据为源 基站向目标基站发送切换请求时所提供的 UE的基本配置参数。 在本发明实施例中， 所述步骤 306和步骤 307可以没有步骤顺序的限定， 例如， 也可以先执行步骤 307再执行步骤 306, 或者， 可以同时执行步骤 306和 步骤 307。
308、 源基站向所述用户设备下发第二切换命令。
若所述源基站根据所述第二测量报告进行切换判决， 确定对所述 UE进行 切换后， 可以向所述 UE发送切换命令， 该切换命令可以记作第二切换命令。 该第二切换命令和所述第一切换命令包含的信息可以完全相同， 也可以部分 相同。
所述 UE在接收到所述第二切换命令后， 可以进行小区切换。
根据本发明实施例提供的方法， 能够在 UE若未收到第一切换命令、 继续 上报测量报告时， 取消所述第一切换命令未完成的第一切换动作， 可以避免 UE持续发送测量报告， 节省了资源与 UE的功耗。 并且基站可以通过下发第二 切换命令， 继续对 UE进行切换， 将 UE切换到目标小区， 避免了现有技术中基 站对于 UE未收到第一切换命令后继续发送的测量报告不做处理， 而导致基站 发起用户译放流程， 用户掉话， 从而保证用户通话的连续性， 提升用户通话 质量。
对应于上述本发明实施例提供的小区切换方法， 如图 4所示， 本发明实施 述基站可以包括：
收发器 41 , 用于接收 UE上报的第一测量报告， 向所述 UE下发第一切换命 令； 接收 UE上报的第二测量报告， 所述第二测量报告为所述 UE若没有接收到 所述第一切换命令时上报； 并根据处理器 42的指示， 向所述 UE下发第二切换 命令。
处理器 42, 用于若所述收发器 41接收到所述 UE上报的第二测量报告， 取 消所述第一测量报告触发的切换流程； 并且在根据所述第二测量报告判定对 所述 UE进行小区切换后， 指示所述收发器 41向 UE下发切换命令。 其中， 若所述收发器接收到所述 UE上报的第二测量报告， 在取消所述第 一测量 ^艮告触发的切换流程时， 如图 5所示， 所述处理器 42包括：
切换取消命令单元 422, 用于向所述目标基站发送切换取消命令， 所述切 换取消命令用于指示目标基站取消第一测量报告触发的切换流程。
所述处理器 42还可以包括释放单元 421 ,用于译放所述 UE的转发数据， 所 述转发数据为源基站向目标基站发送切换请求时所提供的 UE的基本配置参 数。
本发明实施例提供的基站， 收发器 41根据 UE上报的第一测量报告向所述 UE下发第一切换命令； 收发器 41接收 UE上报的第二测量报告， 所述第二测量 报告为所述 UE若没有接收到所述第一切换命令时上报； 若所述收发器 41接收 到所述 UE上报的第二测量报告， 处理器 42取消所述第一测量报告触发的切换 流程； 并且在根据所述第二测量报告判定对所述 UE进行小区切换后， 指示所 述收发器 41向 UE下发切换命令； 收发器 41根据处理器 42的指示， 向所述 UE下 发第二切换命令。 与现有技术相比， 本发明实施例能够在 UE未收到第一切换 命令时取消第一测量报告触发的切换流程， 可以避免 UE持续发送测量报告， 节省了资源与 UE的功耗。 并且基站可以通过下发第二切换命令， 继续对 UE进 行切换， 将 UE切换到目标小区， 避免了现有技术中基站对于 UE未收到第一切 换命令后继续发送的测量报告不做处理， 而导致基站发起用户译放流程， 用 户掉话， 从而保证用户通话的连续性， 提升用户通话质量。
如图 6所示， 本实施例提供了一种用户设备， 所述用户设备包括： 发射器 51 , 用于向基站发送第一测量报告， 并在接收器 52没有接收到所 述基站发送的第一切换命令时， 向所述基站发送第二测量报告， 所述第一切 换命令由所述基站在接收到所述第一测量报告后发送。
接收器 52, 用于接收所述基站发送的第二切换命令， 所述第二切换命令 由所述基站在接收到所述第二测量报告， 取消所述第一测量报告触发的切换 流程， 根据所述第二测量报告判定对所述 UE进行小区切换后发送。 处理器 53 , 用于根据所述接收器 52接收的切换命令进行小区切换。
其中， 所述接收器 52接收到第二切换命令后， 所述发射器 51可以停止向 所述基站上传测量报告。
本发明实施例提供的用户设备， 发射器 51向基站发送第一测量报告， 并 在接收器 52没有接收到所述基站发送的第一切换命令时， 向所述基站发送第 二测量报告， 所述第一切换命令由所述基站在接收到所述第一测量报告后发 送； 接收器 52接收所述基站发送的第二切换命令， 所述第二切换命令由所述 基站在接收到所述第二测量报告， 取消所述第一测量报告触发的切换流程， 根据所述第二测量报告判定对所述 UE进行小区切换后发送； 处理器 53根据所 述接收器 52接收的切换命令进行小区切换。 与现有技术相比， 本发明实施例 能够在 UE未收到第一切换命令时取消第一测量报告触发的切换流程， 可以避 免 UE持续发送测量报告， 节省了资源与 UE的功耗。 并且基站可以通过下发第 二切换命令， 继续对 UE进行切换， 将 UE切换到目标小区， 避免了现有技术中 基站对于 UE未收到第一切换命令后继续发送的测量报告不做处理， 而导致基 站发起用户译放流程， 用户掉话， 从而保证用户通话的连续性， 提升用户通 话质量。
本发明实施例提供的基站可以实现上述提供的方法实施例， 具体功能实 现请参见方法实施例中的说明， 在此不再贅述。 本发明实施例提供的小区切 换方法、 基站及用户设备可以适用于对用户设备所在的小区进行切换， 但不 仅限于此。
本发明实施例还提供了一种通信***， 可以包括基站和 UE。 该通信*** 可以实现如图 1、 2或图 3所示所示实施例提供的小区切换方法， 该通信***中 的基站可以参考图 4所示实施例提供的基站，该通信***中的 UE可以参考如图 6所示实施例提供的 UE, 在此不——贅述。
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 一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^ ^己忆体 ( Random Access Memory, RAM )等。
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 想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保 护范围应该以权利要求的保护范围为准。

Claims

权利要求 书
1、 一种小区切换方法， 其特征在于， 包括：
基站接收用户设备 UE上报的第一测量报告， 向所述 UE下发第一切换命令； 所述基站接收所述 UE上报的第二测量报告，所述第二测量报告为所述 UE若 没有接收到所述第一切换命令时上报；
基站根据所述第二测量报告， 取消所述第一测量报告触发的切换流程； 所述基站根据所述第二测量报告判定对所述 UE进行小区切换后，向所述 UE 下发第二切换命令。
2、 根据权利要求 1所述的方法， 其特征在于， 所述取消所述第一测量报告 触发的切换流程包括：
基站向所述目标基站发送切换取消命令， 所述切换取消命令用于指示所述 目标基站取消所述第一测量报告触发的切换流程。
3、 根据权利要求 2所述的方法， 其特征在于， 所述取消所述第一测量报告 触发的切换流程还包括：
基站释放所述 UE的转发数据。
4、 一种小区切换方法， 其特征在于， 包括：
用户设备 UE向基站发送第一测量报告；
所述 UE若没有接收到所述基站发送的第一切换命令， 向所述基站上报第二 测量报告， 所述第一切换命令由所述基站在接收到所述第一测量报告后发送； 所述 UE接收所述基站发送的第二切换命令， 所述第二切换命令由所述基站 在接收到所述第二测量报告， 取消所述第一测量报告触发的切换流程， 根据所 述第二测量报告判定对所述 UE进行小区切换后发送；
所述 UE根据所述第二切换命令进行小区切换。
5、 根据权利要求 4所述的方法， 其特征在于， 还包括：
所述 UE接收到所述第二切换命令后， 停止向所述基站上传测量报告。
6、 一种基站， 其特征在于， 包括： 收发器， 用于接收用户设备 UE上报的第一测量报告， 向所述 UE下发第一切 换命令； 接收 UE上报的第二测量报告， 所述第二测量报告为所述 UE若没有接收 到所述第一切换命令时上报； 并根据处理器的指示， 向所述 UE下发第二切换命 令；
处理器， 用于若所述收发器接收到所述 UE上报的第二测量报告， 取消所述 第一测量报告触发的切换流程； 并且在根据所述第二测量报告判定对所述 UE进 行小区切换后， 指示所述收发器向 UE下发切换命令。
7、 根据权利要求 6所述的基站， 其特征在于， 所述处理器进一步包括： 切换取消命令单元，用于若所述收发器接收到所述 UE上报的第二测量报告， 向所述目标基站发送切换取消命令， 所述切换取消命令用于指示所述目标基站 取消所述第一测量报告触发的切换流程。
8、 根据权利要求 7所述的基站， 其特征在于， 所述处理器还包括： 释放单元， 用于若所述收发器接收到所述 UE上报的第二测量报告， 释放所 述 UE的转发数据。
9、 一种用户设备， 其特征在于， 包括：
发射器， 用于向基站发送第一测量报告， 并在接收器没有接收到所述基站 发送的第一切换命令时， 向所述基站发送第二测量报告， 所述第一切换命令由 所述基站在接收到所述第一测量报告后发送；
接收器， 用于接收所述基站发送的第二切换命令， 所述第二切换命令由所 述基站在接收到所述第二测量报告， 取消所述第一测量报告触发的切换流程， 根据所述第二测量报告判定对所述用户设备 UE进行小区切换后发送；
处理器， 用于根据所述接收器接收的切换命令进行小区切换。
10、 一种通信***， 其特征在于， 包括如权利要求 6-8任一所述的基站， 以 及如权利要求 9所述的用户设备。
PCT/CN2011/079211 2011-08-31 2011-08-31 小区切换方法、基站、用户设备及通信*** WO2012119433A1 (zh)

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