WO2012119433A1 - Procédé de commutation de cellule, station de base, équipement d'utilisateur et système de communication - Google Patents

Procédé de commutation de cellule, station de base, équipement d'utilisateur et système de communication 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
Other languages
English (en)
Chinese (zh)
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 CN201180001727.6A priority Critical patent/CN102369760B/zh
Priority to PCT/CN2011/079211 priority patent/WO2012119433A1/fr
Publication of WO2012119433A1 publication Critical patent/WO2012119433A1/fr

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

Abstract

La présente invention se rapporte à un procédé de commutation de cellule, à une station de base, à un équipement d'utilisateur et à un système de communication. L'invention appartient au domaine technique des communications, et est apte à résoudre le problème de perte d'appel lié, dans l'état de la technique, à l'impossibilité, pour l'équipement d'utilisateur, de recevoir une commande de commutation. Ceci est dû au fait que la qualité du signal sur le côté de la station de base source se détériore durant la commutation de cellule et que la station de base source initie ensuite une libération de l'utilisateur. Le procédé selon l'invention comprend les étapes suivantes : une station de base reçoit un premier rapport de mesure transmis par un équipement d'utilisateur (UE, User Equipment), et envoie une première commande de commutation à l'UE ; la station de base reçoit un second rapport de mesure transmis par l'UE, le second rapport de mesure étant transmis si l'UE ne reçoit pas la première commande de commutation ; la station de base annule le processus de commutation déclenché par le premier rapport de mesure sur la base du second rapport de mesure ; après avoir déterminé qu'une commutation de cellule devait être accomplie sur l'UE sur la base du second rapport de mesure, la station de base envoie une seconde commande de commutation à l'UE. La présente invention est applicable à la commutation de la cellule dans laquelle se trouve l'équipement d'utilisateur.
PCT/CN2011/079211 2011-08-31 2011-08-31 Procédé de commutation de cellule, station de base, équipement d'utilisateur et système de communication WO2012119433A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201180001727.6A CN102369760B (zh) 2011-08-31 2011-08-31 小区切换方法、基站、用户设备及通信系统
PCT/CN2011/079211 WO2012119433A1 (fr) 2011-08-31 2011-08-31 Procédé de commutation de cellule, station de base, équipement d'utilisateur et système de communication

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Application Number Priority Date Filing Date Title
PCT/CN2011/079211 WO2012119433A1 (fr) 2011-08-31 2011-08-31 Procédé de commutation de cellule, station de base, équipement d'utilisateur et système de communication

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WO2012119433A1 true WO2012119433A1 (fr) 2012-09-13

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WO2018058514A1 (fr) * 2016-09-30 2018-04-05 Telefonaktiebolaget Lm Ericsson (Publ) Procédés et systèmes pour une mobilité basée sur des mesurages
EP3520483B1 (fr) 2016-09-30 2022-05-04 Telefonaktiebolaget LM Ericsson (publ) Procédés et systèmes pour une mobilité basée sur des mesurages
CN109792667B (zh) 2016-09-30 2022-03-25 瑞典爱立信有限公司 用于基于测量的移动性的方法和设备
EP3520254A4 (fr) 2016-09-30 2020-05-27 Telefonaktiebolaget LM Ericsson (publ) Procédés et agencements destinés à une configuration de mesure de liaison radio
CN106658519B (zh) * 2016-11-11 2020-11-03 中国移动通信集团江苏有限公司 降低srvcc切换时延的方法
CN112105064B (zh) * 2019-06-17 2022-09-13 中国移动通信有限公司研究院 切换方法、指示方法、终端及网络侧设备
CN115426667B (zh) * 2022-11-06 2023-03-24 荣耀终端有限公司 切换异常的处理方法、设备及存储介质

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