WO2014154082A1 - 小区切换的方法和用户设备 - Google Patents

小区切换的方法和用户设备 Download PDF

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Publication number
WO2014154082A1
WO2014154082A1 PCT/CN2014/072891 CN2014072891W WO2014154082A1 WO 2014154082 A1 WO2014154082 A1 WO 2014154082A1 CN 2014072891 W CN2014072891 W CN 2014072891W WO 2014154082 A1 WO2014154082 A1 WO 2014154082A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
target cell
cell
rnc
serving cell
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Application number
PCT/CN2014/072891
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English (en)
French (fr)
Inventor
杨毅
花梦
周涵
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.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2014154082A1 publication Critical patent/WO2014154082A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters

Definitions

  • the embodiments of the present invention relate to the field of communications, and more specifically, to a method and a user equipment for cell handover. Background technique
  • the channel quality of the micro-cell is faster than that of the macro-cell.
  • the signal quality of the micro-station will be rapidly attenuated as the distance from the user equipment (UE, User Equipment) to the micro-station increases. .
  • the fast attenuation of the micro station signal may cause the UE to report the macro station's 1A or 1C event, and does not receive the active set update message, thereby failing to establish a link with the macro station, and finally Out of step.
  • the fast fading of the micro station signal will cause the micro station interference signal received by the UE to increase rapidly, and the macro station will lose the link establishment and eventually lose the step. That is to say, when the moving speed of the UE is fast, the fast delay of the micro station may cause the UE to lose synchronization.
  • the embodiment of the invention provides a method for cell handover and a user equipment, which can solve the problem of out-of-synchronization of the UE through cell handover.
  • a method for cell handover including: after the user equipment is out of synchronization, if the user equipment does not resume downlink synchronization within a predetermined time, the user equipment sends the target cell to the radio network controller RNC. a handover request message to request the RNC to switch the serving cell of the user equipment to the target cell; the user equipment receives a serving cell handover message sent by the RNC on the target cell; the user equipment according to the serving cell handover message The serving cell of the user equipment switches to the target cell.
  • the method further includes: transmitting, by the user equipment, a transmit power control message received on a downlink of the at least one non-serving cell after the downlink is out of synchronization, where the at least one non- The serving cell is in the active set of the user equipment, and the at least one is not served The downlink of the cell is reliably received; the user equipment performs uplink power control according to the transmit power control message to ensure uplink connection of the user equipment.
  • the first possible implementation manner of the first aspect or the first aspect is implemented as follows:
  • the handover request message of the target cell includes a measurement message of the target cell.
  • the second possible implementation manner of the first aspect is implemented as follows:
  • the measurement message of the target cell carries the 1D measurement event that the target cell becomes the optimal cell of the user equipment.
  • the specific request is that: the handover request message of the target cell includes a radio resource control RRC message, where the RRC message carries the The user equipment requests to switch to the information of the target cell.
  • the first possible implementation manner of the first aspect or the first possible implementation of the first aspect to the fourth possible implementation manner of the first aspect is implemented as :
  • the target cell is in the active set of the user equipment, or the target cell is outside the active set of the user equipment.
  • the receiving, by the user equipment, the serving cell handover message sent by the RNC on the target cell is implemented as: if the target cell is in the user When the activation of the device is centralized, the user equipment receives the serving cell handover message sent by the RNC on the high-speed shared control channel HS-SCCH of the target cell.
  • the method further includes: sending, by the user equipment, the RNC to the RNC before the user equipment is out of synchronization The 1A or 1C event of the target cell, so that the RNC joins the target cell to the active set of the user equipment; the user equipment receives an active set update ASU message sent by the RNC, and the ASU message carries the high speed downlink shared channel radio of the target cell.
  • the network identifies the H-RNTI and HS-SCCH channel configuration parameters, and the ASU message indicates that the user equipment joins the target cell to the active set of the user equipment.
  • Receiving, by the user equipment, the serving cell handover message sent by the RNC on the HS-SCCH of the target cell is: the user equipment receives the HS-SCCH on the target cell according to the H-RNTI and the HS-SCCH channel configuration parameter. The serving cell handover message sent by the RNC.
  • the user equipment receives the serving cell handover message sent by the RNC on the target cell, and implements If the target cell is outside the active set of the user equipment, the user equipment receives the serving cell handover message sent by the RNC on the common channel of the target cell.
  • the specific channel is: the common channel is a forward access channel FACH.
  • the method further includes: receiving, by the user equipment, the broadcast channel on the target cell Configuration information of the common channel; or the user equipment receives configuration information of the common channel that is sent by the RNC through RRC signaling.
  • a method for cell handover is provided.
  • the serving cell of the user equipment is any micro cell under the coverage of the macro cell, and the method includes: the user equipment stops uplink transmission after the downlink is out of synchronization; after a predetermined time
  • the user equipment receives the serving cell handover message sent by the RNC on the macro cell.
  • the user equipment switches the serving cell of the user equipment to the macro cell according to the serving cell handover message.
  • a user equipment including: a sending unit, configured to: after the user equipment downlinks out of synchronization, send the target cell to the radio network controller RNC if the user equipment does not resume downlink synchronization within a predetermined time a handover request message to request the RNC to switch the serving cell of the user equipment to the target cell; a receiving unit, configured to receive a serving cell handover message sent by the RNC on the target cell; and a switching unit, configured to use the user equipment The serving cell switches to the target cell.
  • the receiving unit is further configured to: after receiving the downlink out-synchronization, the user equipment receives a transmit power control message in a downlink of the at least one non-serving cell, where The at least one non-serving cell is in an active set of the user equipment, and the downlink of the at least one non-serving cell is reliably received.
  • the user equipment further includes: a power control unit, configured to perform uplink power control according to the transmit power control message to ensure uplink connection of the user equipment.
  • the first possible implementation manner of the third aspect or the third aspect is implemented as follows:
  • the handover request message of the target cell includes a measurement message of the target cell.
  • the second possible implementation manner of the third aspect is implemented as follows:
  • the measurement message of the target cell carries the 1D measurement event that the target cell becomes the optimal cell of the user equipment.
  • the specific request is that the handover request message of the target cell includes an RRC message, where the RRC message carries the user equipment request. Switch to the information of the target cell.
  • a fifth possible implementation manner in combination with the third possible aspect, or the first possible implementation manner of the third aspect, to any one of the possible implementation manners of the fourth possible implementation manner of the third aspect, :
  • the target cell is in the active set of the user equipment, or the target cell is outside the active set of the user equipment.
  • the receiving unit is specifically implemented as: if the target cell is in the active set of the user equipment, the high-speed sharing in the target cell
  • the serving channel handover message sent by the RNC is received on the control channel HS-SCCH.
  • the sending unit is further configured to: before the downlink delay of the user equipment, Sending the 1A or 1C event of the target cell to the RNC, so that the RNC joins the target cell to the active set of the user equipment; the receiving unit is further configured to receive an active set update ASU message sent by the RNC, where the ASU message carries the target The high-speed downlink shared channel radio network of the cell identifies the H-RNTI and the HS-SCCH channel configuration parameter, and the ASU message indicates that the user equipment adds the target cell to the active set of the user equipment; the receiving unit is further configured to use the H- The RNTI and HS-SCCH channel configuration parameters receive the serving cell handover message sent by the RNC on the HS-SCCH of the target cell.
  • the receiving unit is further configured to: if the target cell is outside the active set of the user equipment, The serving cell handover message sent by the RNC is received on the common channel of the cell.
  • the specific channel is: the common channel is a forward access channel FACH.
  • the receiving unit is further configured to: broadcast in the target cell.
  • the configuration information of the common channel is received on the channel; or the receiving unit is further configured to receive configuration information of the common channel that is sent by the RNC through RRC signaling.
  • the fourth aspect provides a user equipment, where the serving cell of the user equipment is any micro cell under the coverage of the macro cell, and includes: a sending unit, where the user equipment stops after the downlink is out of synchronization a receiving unit, configured to receive a serving cell handover message sent by the RNC on the macro cell after the predetermined time; the switching unit, configured to switch the serving cell of the user equipment to the macro according to the serving cell handover message Community.
  • a sending unit where the user equipment stops after the downlink is out of synchronization
  • a receiving unit configured to receive a serving cell handover message sent by the RNC on the macro cell after the predetermined time
  • the switching unit configured to switch the serving cell of the user equipment to the macro according to the serving cell handover message Community.
  • FIG. la is a flowchart of a method for cell handover according to an embodiment of the present invention.
  • FIG. 1b is a flowchart of another method for cell handover according to an embodiment of the present invention.
  • FIG. 2 is a flow chart of interaction of cell handover in an embodiment of the present invention.
  • FIG. 3 is another flow chart of interaction of a cell handover according to an embodiment of the present invention.
  • FIG. 4 is a flow chart of another method for cell handover according to an embodiment of the present invention.
  • FIG. 5 is another flow chart of interaction of a cell handover according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of another user equipment according to an embodiment of the present invention. detailed description
  • a user equipment which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
  • the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle,
  • the wireless access network exchanges languages and/or data.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB or NB) in WCDMA, or may be an evolved base station in LTE (eNB or e-NodeB, evolved Node B)
  • BTS Base Transceiver Station
  • NodeB or NB base station
  • eNB evolved base station
  • LTE evolved Node B
  • the UE may trigger the following intra-frequency measurement events, as follows:
  • 1A Event Used to add an active set cell. When an active set outside the cell is better than the report range, the 1A event is triggered.
  • 1B Event Used to delete the active set cell. When an active set is out of range, the 1B event is triggered.
  • 1C Event Used to replace the active out-of-set cell with the active set cell. When an active out-of-set cell is better than an active set cell, the 1C event is triggered.
  • 1D event Used to update the active set optimal cell. When the optimal cell changes, a 1D event is triggered.
  • FIG. la is a flowchart of a method for cell handover according to an embodiment of the present invention. The method of Figure la is performed by the UE. 101. After the UE is out of synchronization, if the UE does not resume downlink synchronization within a predetermined time, the UE sends a handover request message of the target cell to the radio network controller (RNC) to request the RNC to serve the UE. The cell switches to the target cell.
  • RNC radio network controller
  • the UE receives a serving cell handover message sent by the RNC on the target cell.
  • the UE switches the serving cell of the UE to the target cell according to the serving cell handover message.
  • the UE does not resume downlink synchronization within a predetermined time after the downlink out-of-synchronization, and may send a handover request message of the target cell to the RNC to switch the serving cell to the target cell, thereby solving the UE's fast-fading and causing the UE to Out of step problem.
  • the method may further include:
  • TPC transmit power control message
  • the at least one non-serving cell is in an active set of the UE, and the downlink of the at least one non-serving cell is reliably received.
  • the UE may perform uplink power control according to the transmit power control message to ensure uplink of the UE.
  • the connection of the road may be performed by The UE.
  • An active set refers to a set of cells that establish a connection with a user equipment, and the user transmits and receives information through the cell of the active set.
  • a Monitor Set refers to a set of cells that are not monitored in the active set but are monitored according to a list of neighboring nodes allocated by the Universal Mobile Telecommunication System Territorial Access Networ (UTRAN).
  • UTRAN Universal Mobile Telecommunication System Territorial Access Networ
  • a Detected Set is a set of cells that are not detected by the UE but are not detected by the UE.
  • the UE performs the intra-frequency measurement, in addition to measuring the cells of the active set and the monitoring set, it is also possible to measure the detection set.
  • the cells in the detection set may also enter the activation set of the UE.
  • the downlink of the non-serving cell may be utilized.
  • the road receives the TPC message for uplink power control.
  • the uplink connection may be considered normal due to the short time of downlink out-of-synchronization.
  • the handover request message of the target cell may include a measurement message of the target cell.
  • the measurement message of the target cell may carry the 1D measurement event of the target cell as the optimal cell of the UE.
  • the handover request message of the target cell may include a Radio Resource Control (RRC) message, where the RRC message may carry information that the UE requests to handover to the target cell.
  • RRC Radio Resource Control
  • the target cell of the UE may be in the activation set of the UE or outside the activation set of the UE.
  • the target cell of the UE is outside the active set of the UE, that is, the target cell of the UE may be selected from the monitoring set of the UE, or may be selected from the detection set of the UE.
  • the target cell selected by the UE should be a cell that meets the measurement conditions and can avoid the UE from losing synchronization.
  • the target cell of the UE is an optimal cell among the active set, the monitoring set and the detection set of the UE.
  • the UE may receive the serving cell handover message sent by the RNC on the high-speed shared control channel HS-SCCH channel of the target cell.
  • the method further includes: the UE sending the 1A or 1C event of the target cell to the RNC, so that the RNC adds the target cell to an active set of the UE; and the UE receives the active set update sent by the RNC (Active a Set Update (ASU) message, the ASU message may carry a High Speed Downlink Shared Channel Radio Network Temporary Identifier (H-RNTI) and a High Speed Physical Downlink Shared Control Channel (HS) -SCCH) configuration parameter; the UE receiving the serving cell handover message sent by the RNC on the HS-SCCH of the target cell may be implemented as follows: The UE may be in the HS-SCCH channel of the target cell according to the H-RNTI and the HS-SCCH channel configuration parameter. Receiving a serving cell handover message sent by the RNC on the high-speed shared control channel HS-SC
  • the UE may receive the serving cell handover message sent by the RNC on the common channel of the target cell.
  • the common control channel may be a Forward Access Channel (FACH).
  • FACH Forward Access Channel
  • the method further includes: receiving, by the UE, configuration information of the common channel on a broadcast channel, or receiving, by the UE, configuration information of the common channel that is sent by the RNC through RRC signaling.
  • the target cell selected by the UE is a cell in the active set.
  • the UE reports a 1A or 1C event of the target cell.
  • the UE finds that one cell outside the active set is better than the reporting range, and reports the 1A event of the cell. Alternatively, the UE finds that one cell outside the active set is better than the cell in the active set, and reports the 1C event of the cell.
  • the RNC sends an ASU message, and carries a High Speed Downlink Shared Channel Radio Network Temporary Identifier (H-RNTI), and a High Speed Physical Downlink Shared Control Channel (High Speed Physical Downlink Shared Control Channel). , HS-SCCH ) Configuration information.
  • H-RNTI High Speed Downlink Shared Channel Radio Network Temporary Identifier
  • HS-SCCH High Speed Physical Downlink Shared Control Channel
  • the RNC receives the 1 A or 1 C event of the target cell, sends an ASU message to the UE, and adds the target cell to the active set of the UE.
  • the ASU message may carry parameters such as H-RNTI and HS-SCCH configuration information of the target cell.
  • the UE finds that the downlink is out of synchronization.
  • the uplink of the UE may be considered to be normal for a short period of time.
  • the out-of-synchronization decision is only evaluated for the downlink of the serving cell, if the downlink in which the at least one non-serving cell exists in the active set is reliably received, the downlink of the non-serving cell may be utilized.
  • the road receives the TPC message for uplink power control.
  • the UE performs uplink power control by receiving a TPC message on the downlink of the active non-serving cell, thereby maintaining the uplink connection of the UE.
  • the UE finds that downlink synchronization is not resumed within the T1 time, the UE sends a handover request message of the target cell to the RNC.
  • T1 is a predetermined time, which can be determined by the network side (such as RNC) or protocol.
  • the handover request message of the target cell may include a measurement message of the target cell.
  • the measurement message of the target cell may carry a 1D measurement event of the optimal cell called the UE of the target cell.
  • the handover request message of the target cell may further include a general radio resource control (RRC) message, where the RRC message may carry information that the UE requests to handover to the target cell.
  • RRC radio resource control
  • the UE uses the H-RNTI of the target cell, and the HS-SCCH configuration information receives a serving cell handover message in the target cell.
  • the UE After receiving the measurement message from the RNC, the UE monitors the HS-SCCH channel on the target cell according to the H-RNTI and HS-SCCH configuration information of the previously received target cell, and receives the serving cell on the HS-SCCH channel of the target cell. Switch messages.
  • the UE switches the serving cell to the target cell.
  • the UE After receiving the serving cell handover message, the UE switches the serving cell to the target cell.
  • the UE sends a serving cell handover confirmation message.
  • the serving cell handover confirmation message is sent to the RNC.
  • FIG. 3 is another flow chart of interaction of a cell handover according to an embodiment of the present invention.
  • the target cell selected by the UE is a cell outside the active set.
  • the UE reports a 1A or 1C event of the target cell.
  • the UE finds that one cell outside the active set is better than the reporting range, and reports the 1A event of the cell. Alternatively, the UE finds that one cell outside the active set is better than the cell in the active set, and reports the 1C event of the cell.
  • the UE does not receive the ASU message sent by the RNC.
  • the UE may not receive the RNC transmission because it is moving faster or for other reasons.
  • the ASU message thus failing to join the target cell to the active set.
  • the target cell is outside the active set of the UE.
  • the UE finds that the downlink is out of synchronization.
  • the uplink of the UE may be considered normal in a short period of time.
  • the downlink of the non-serving cell may be utilized.
  • the road receives the TPC message for uplink power control.
  • the UE performs uplink power control by using the TPC message received on the downlink of the active centralized non-serving cell, thereby maintaining the uplink connection of the UE.
  • the UE finds that the downlink synchronization is not restored within the T1 time, the UE sends a handover request message of the target cell to the RNC.
  • T1 is a predetermined time, which can be determined by the network side (such as RNC) or protocol.
  • the handover request message of the target cell may be a measurement message of the target cell.
  • the measurement message of the target cell may carry the 1D measurement event of the target cell as the optimal cell of the UE.
  • the handover request message of the target cell may further include a general radio resource control (RRC) message, where the RRC message may carry information that the UE requests to handover to the target cell.
  • RRC radio resource control
  • the UE receives a serving cell handover message sent by the RNC by using a common channel of the target cell.
  • the serving cell handover message may include the identifier information of the UE, for example, a User Equipment Radio Network Temporary Identifier (U-RNTI), and the UE may determine whether it is the self according to the UE identifier in the serving cell handover message.
  • U-RNTI User Equipment Radio Network Temporary Identifier
  • the serving cell handover message may be a forward random access channel (FACH) channel.
  • FACH forward random access channel
  • the UE may use the public network temporary identity to receive messages for the common channel, such as a public H-RNTI.
  • the configuration information of the common channel may be obtained from the broadcast channel, or may be pre-configured by the RNC through RRC signaling before the handover.
  • the UE switches the serving cell to the target cell.
  • the UE After receiving the serving cell handover message, the UE switches the serving cell to the target cell.
  • the UE sends a serving cell handover confirmation message.
  • the serving cell handover confirmation message is sent to the RNC.
  • 4 is a flow chart of another method for cell handover according to an embodiment of the present invention.
  • the method of Figure 4 is performed by a UE.
  • the serving cell of the UE is any micro cell under the coverage of the macro cell.
  • the macro cell mentioned in the present invention refers to a cell directly under the jurisdiction of the macro base station, and the micro cell refers to a cell under the jurisdiction of the micro base station in the coverage of the macro cell.
  • the UE stops uplink transmission after the downlink is out of synchronization.
  • the UE receives the serving cell handover message sent by the RNC on the macro cell after the predetermined time.
  • the UE switches the serving cell of the UE to the macro cell according to the serving cell handover message.
  • the UE stops the uplink transmission after the downlink out-of-synchronization to remind the network-side UE to lose synchronization, and receives the serving cell handover message on the macro cell after the predetermined time to switch the serving cell to the macro cell, thereby
  • the problem of out-of-step of the UE caused by the fast decay of the micro-station is solved.
  • FIG. 5 is another flow chart of interaction of a cell handover according to an embodiment of the present invention.
  • the UE finds that the downlink is out of synchronization and stops the uplink transmission.
  • the cell in the active set of the UE finds that the UE is out of synchronization by evaluation.
  • the cell in the active set of the UE passes the evaluation, and the UE may be found to be out of synchronization.
  • the active set cell sends the UE out-of-step information to the RNC.
  • the RNC sends a serving cell handover message on a common channel of the macro cell.
  • the RNC After receiving the UE out-of-synchronization information, the RNC uses the macro cell as the target cell for UE handover, and sends a serving cell handover message on the common channel of the macro cell.
  • the serving cell handover message may carry identification information of the UE.
  • the UE receives a serving cell handover message on a common channel of the macro cell.
  • the UE may receive a serving cell handover message on the common channel of the macro cell.
  • the length of the predetermined time is related to the time when the micro base station evaluates that the UE is out of synchronization, the time when the micro base station reports the UE is out of synchronization, and the time when the RNC sends the serving cell handover message, which may be determined by the RNC or other network side network element, and the present invention is here. No restrictions.
  • the UE switches the serving cell to the macro cell according to the serving cell handover message.
  • the UE sends a serving cell handover confirmation message to the RNC.
  • FIG. 6 is a schematic structural diagram of a UE 600 according to an embodiment of the present invention.
  • the UE 600 may include: a sending unit
  • the sending unit 601 may send a measurement message of the target cell to the RNC to request the RNC to switch the serving cell of the UE 600 to the target cell, after the UE 600 is out of synchronization, if the UE 600 does not resume downlink synchronization within a predetermined time. .
  • the receiving unit 602 can receive the serving cell handover message sent by the RNC on the target cell.
  • the switching unit 603 can switch the serving cell of the UE 600 to the target cell according to the serving cell handover message.
  • the UE 600 does not resume downlink synchronization within a predetermined time after the downlink out-of-synchronization, and may send a handover request message of the target cell to the RNC to switch the serving cell to the target cell, thereby solving the UE's fast-fading and causing the UE to be delayed.
  • the problem of losing step may be performed by the UE 600 to perform a handover request message of the target cell to the RNC to switch the serving cell to the target cell, thereby solving the UE's fast-fading and causing the UE to be delayed. The problem of losing step.
  • the receiving unit 602 is further configured to: after the UE 600 downlinks out of synchronization, receive a transmit power control message on a downlink of the at least one non-serving cell.
  • the UE 600 may further include: a power control unit 604, which can perform uplink power control according to the transmit power control message to ensure uplink connection of the UE 600.
  • the at least one non-serving cell is in an active set of the UE 600, and the downlink of the at least one non-serving cell is reliably received.
  • the handover request message of the target cell may include a measurement message of the target cell.
  • the measurement message of the target cell may carry the 1D measurement event that the target cell becomes the optimal cell of the UE 600.
  • the handover request message of the target cell may include an RRC message, where the RRC message may carry information that the UE 600 requests to handover to the target cell.
  • the target cell may be in an active set of the UE 600, or the target cell may be outside the active set of the UE 600.
  • the receiving unit 602 may specifically receive the serving cell handover message sent by the RNC on the HS-SCCH of the target cell. Further, the sending unit 601 may further send the 1A or 1C event of the target cell to the RNC before the downlink out of synchronization of the UE 600, so that the RNC joins the target cell to the active set of the UE 600; the receiving unit 602 may also receive the RNC.
  • the receiving unit 602 may specifically receive the serving cell handover message sent by the RNC on the common channel of the target cell.
  • the common channel is a FACH.
  • the receiving unit 602 may further receive configuration information of the common channel on a broadcast channel of the target cell; or the receiving unit 602 may further receive configuration information of the common channel that is sent by the RNC through RRC signaling.
  • the UE 600 can also perform the function of the UE in the embodiment of FIG. 2 and FIG. 3, and the present invention is not described herein again.
  • FIG. 7 is a schematic structural diagram of a UE 700 according to an embodiment of the present invention.
  • the serving cell of UE 700 is any micro cell under the coverage of the macro cell.
  • the UE 700 may include: a transmitting unit 701, a receiving unit 702, and a switching unit 703.
  • the sending unit 701 can stop the uplink transmission after the UE 700 goes out of synchronization.
  • the receiving unit 702 can receive the serving cell handover message sent by the RNC on the macro cell after a predetermined time.
  • the switching unit 703 can switch the serving cell of the UE 700 to the macro cell according to the serving cell handover message.
  • the UE 700 stops the uplink transmission after the downlink out-of-synchronization to remind the network-side UE 700 to lose synchronization, and receives the serving cell handover message on the macro cell after the predetermined time to switch the serving cell to the macro cell. Therefore, the problem of out-of-step of the UE 700 caused by the fast decay of the micro-station is solved.
  • the UE 700 can also perform the function of the UE in the embodiment of FIG. 5, which is not described herein again.
  • FIG. 8 is a schematic structural diagram of a UE 800 according to an embodiment of the present invention.
  • the UE 800 may include a transmitter 801, a receiver 804, a processor 802, and a memory 803.
  • the transmitter 801 may send the measurement message of the target cell to the RNC to request the RNC to switch the serving cell of the UE 800 to the target cell, after the UE 800 is out of synchronization, if the UE 800 does not resume downlink synchronization within a predetermined time. .
  • the receiver 804 can receive the serving cell handover message sent by the RNC on the target cell.
  • the processor 802 can switch the serving cell of the UE 800 to the target cell according to the serving cell handover message.
  • the memory 803 can store an instruction that causes the processor 802 to switch the serving cell of the UE 800 to the target cell according to the serving cell handover message.
  • the UE 800 does not resume downlink synchronization within a predetermined time after the downlink is out of synchronization.
  • the handover request message of the target cell may be sent to the RNC to switch the serving cell to the target cell, thereby solving the problem of the UE being out of synchronization caused by the fast fading of the micro station.
  • the processor 802 controls the operation of the user equipment 800, which may also be referred to as a CPU (Central Processing Unit).
  • Memory 803 can include read only memory and random access memory and provides instructions and data to processor 802.
  • a portion of memory 803 may also include non-volatile random access memory (NVRAM).
  • transmitter 801 and receiver 804 can be coupled to antenna 805.
  • the various components of user equipment 800 are coupled together by a bus system 806, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as bus system 806 in the figure.
  • Processor 802 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method may be completed by an integrated logic circuit of hardware in the processor 802 or an instruction in the form of software.
  • the processor 802 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware. Component.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by the hardware decoding processor, or by a combination of hardware and software modules in the decoding processor.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 803, and the processor 802 reads the information in the memory 803 and combines the hardware to perform the steps of the above method.
  • the receiver 804 is further configured to receive a transmit power control message on a downlink of the at least one non-serving cell after the UE 800 downlinks out of synchronization.
  • the processor 802 can also perform uplink power control according to the transmit power control message to ensure the uplink connection of the UE 800.
  • the at least one non-serving cell is in an active set of the UE 800, and the downlink of the at least one non-serving cell is reliably received.
  • the handover request message of the target cell may include a measurement message of the target cell. Further, the measurement message of the target cell may carry the 1D measurement event that the target cell becomes the optimal cell of the UE 800.
  • the handover request message of the target cell may include an RRC message, where the RRC message may carry information that the UE 800 requests to handover to the target cell.
  • the target cell may be in the active set of the UE 800, or the target cell may be outside the active set of the UE 800.
  • the receiver 804 may specifically receive the serving cell handover message sent by the RNC on the HS-SCCH of the target cell. Further, the transmitter 801 may also send a 1A or 1C event of the target cell to the RNC before the UE 800 downlinks out of synchronization so that the RNC joins the target cell to the active set of the UE 800; the receiver 804 may also receive the RNC.
  • the receiver 804 may specifically receive the serving cell handover message sent by the RNC on the common channel of the target cell.
  • the common channel is FACH.
  • the receiver 804 may also receive configuration information of the common channel on a broadcast channel of the target cell; or the receiver 804 may further receive configuration information of the common channel that is sent by the RNC through the RRC signaling.
  • the UE 800 can also perform the functions of the UE in the embodiment of FIG. 2 and FIG. 3, and the present invention will not be described herein.
  • FIG. 9 is a schematic structural diagram of a UE 900 according to an embodiment of the present invention.
  • the serving cell of UE 900 is any micro cell under the coverage of the macro cell.
  • the UE 900 may include: a transmitter 901, a receiver 904, a processor 902, and a memory 903.
  • the transmitter 901 can stop the uplink transmission after the UE 900 goes out of synchronization.
  • Receiver 904 the cocoa receives the serving cell handover message sent by the RNC on the macro cell after a predetermined time.
  • the processor 902 can switch the serving cell of the UE 900 to the target cell according to the serving cell handover message.
  • the memory 903 can store an instruction to cause the processor 902 to switch the serving cell of the UE 900 to the macro cell according to the serving cell handover message.
  • the UE 900 stops the uplink transmission after the downlink is out of synchronization to remind the network.
  • the side UE 900 is out of synchronization, and receives a serving cell handover message on the macro cell to switch the serving cell to the macro cell after a predetermined time, thereby solving the problem that the micro station fast fading causes the UE 900 to lose synchronization.
  • the processor 902 controls the operation of the user equipment 900, which may also be referred to as a CPU (Central Processing Unit).
  • Memory 903 can include read only memory and random access memory and provides instructions and data to processor 902. A portion of the memory 903 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • transmitter 901 and receiver 904 can be coupled to antenna 905.
  • the various components of user equipment 900 are coupled together by a bus system 906, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as bus system 906 in the figure.
  • Processor 902 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method may be completed by an integrated logic circuit of the hardware in the processor 902 or an instruction in the form of software.
  • the processor 902 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware. Component.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by the hardware decoding processor, or by a combination of hardware and software modules in the decoding processor.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 903, and the processor 902 reads the information in the memory 903 and combines the hardware to complete the steps of the above method.
  • the UE 900 can also perform the function of the UE in the embodiment of FIG. 5, which is not described herein again.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Abstract

本发明实施例提供一种小区切换的方法和用户设备及基站。该方法包括:用户设备在下行失步后,如果该用户设备在预定的时间内未恢复下行同步,则该用户设备向无线网络控制器RNC发送目标小区的切换请求消息以请求该RNC将该用户设备的服务小区切换到该目标小区;该用户设备在该目标小区上接收该RNC发送的服务小区切换消息;该用户设备根据该服务小区切换消息将该用户设备的服务小区切换到该目标小区。本发明实施例中,UE在下行失步后预定的时间内未恢复下行同步,可向RNC发送目标小区的切换请求消息以将服务小区切换到目标小区,从而解决了微站快衰导致UE的失步问题。

Description

小区切换的方法和用户设备
本申请要求于 2013 年 3 月 29 日提交中国专利局、 申请号为 201310106527.8、 发明名称为 "小区切换的方法和用户设备" 的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及通信领域, 并且更具体地, 涉及一种小区切换的方法 和用户设备。 背景技术
在异构网络 (HetNet)同频部署环境下, 微小区的信道质量变化比宏小区 快, 微站的信号质量将随着用户设备(UE, User Equipment )到微站距离的 增大而迅速衰减。 当 UE由微站内部向宏站移动时, 微站信号的快速衰减可 能导致 UE上报宏站的 1A或 1C事件后,没有收到激活集更新消息,从而无法 跟宏站建立链路,并且最终失步。从宏站向微站内部移动时,微站信号的快衰 落会造成 UE接收到的微站干扰信号迅速增加,也会失去宏站建立链路,并且 最终失步。 也就是说, 当 UE的移动速度很快时, 微站快衰将可能造成 UE 的失步。 发明内容
本发明实施例提供一种小区切换的方法和用户设备, 能够通过小区切换 解决 UE的失步问题。
第一方面,提出了一种小区切换的方法, 包括: 用户设备在下行失步后, 如果该用户设备在预定的时间内未恢复下行同步, 则该用户设备向无线网络 控制器 RNC发送目标小区的切换请求消息以请求该 RNC将该用户设备的服 务小区切换到该目标小区; 该用户设备在该目标小区上接收该 RNC发送的 服务小区切换消息; 该用户设备根据该服务小区切换消息将该用户设备的服 务小区切换到该目标小区。
在第一种可能的实现方式中, 结合第一方面, 还包括: 该用户设备在下 行失步后通过在至少一个非服务小区的下行链路接收的发射功率控制消息, 其中, 该至少一个非服务小区在该用户设备的激活集中, 且该至少一个非服 务小区的下行链路是可靠接收的; 该用户设备根据该发射功率控制消息进行 上行功控以保证该用户设备的上行链路的连接。
在第二种可能的实现方式中,结合第一方面或第一方面的第一种可能的 实现方式, 具体实现为: 该目标小区的切换请求消息包括该目标小区的测量 消息。
在第三种可能的实现方式中, 结合第一方面的第二种可能的实现方式, 具体实现为: 该目标小区的测量消息携带该目标小区成为该用户设备的最优 小区的 1D测量事件。
在第四种可能的实现方式中,结合第一方面或第一方面的第一种可能的 实现方式,具体实现为: 该目标小区的切换请求消息包括无线资源控制 RRC 消息, 该 RRC消息携带该用户设备请求切换到该目标小区的信息。
在第五种可能的实现方式中,结合第一方面或第一方面的第一种可能的 实现方式至第一方面的第四种可能的实现方式中任一种可能的实现方式, 具 体实现为: 目标小区在该用户设备的激活集中, 或该目标小区在该用户设备 的激活集外。
在第六种可能的实现方式中, 结合第一方面的第五种可能的实现方式, 用户设备在该目标小区上接收该 RNC 发送的服务小区切换消息具体实现 为: 如果该目标小区在该用户设备的激活集中, 则该用户设备在该目标小区 的高速共享控制信道 HS-SCCH上接收该 RNC发送的服务小区切换消息。
在第七种可能的实现方式中,结合第一方面的第六种可能的实现方式中 任一种可能的实现方式, 还包括: 在该用户设备下行失步之前, 该用户设备 向该 RNC发送该目标小区的 1A或 1C事件以便该 RNC将该目标小区加入 该用户设备的激活集中;该用户设备接收该 RNC发送的激活集更新 ASU消 息,该 ASU消息携带该目标小区的高速下行共享信道无线网络标识 H-RNTI 和 HS-SCCH信道配置参数,该 ASU消息指示该用户设备将该目标小区加入 到该用户设备的激活集中。 用户设备在该目标小区的 HS-SCCH 上接收该 RNC发送的服务小区切换消息具体实现为: 该用户设备根据该 H-RNTI和 HS-SCCH信道配置参数在该目标小区的 HS-SCCH上接收该 RNC发送的服 务小区切换消息。
在第八种可能的实现方式中, 结合第一方面的第五种可能的实现方式, 该用户设备在该目标小区上接收该 RNC发送的服务小区切换消息具体实现 为: 如果该目标小区在该用户设备的激活集外, 则该用户设备在该目标小区 的公共信道上接收该 RNC发送的服务小区切换消息。
在第九种可能的实现方式中, 结合第一方面的第八种可能的实现方式, 具体实现为: 该公共信道为前向接入信道 FACH。
在第十种可能的实现方式中,结合第一方面的第八种可能的实现方式或 第一方面的第九种可能的实现方式, 还包括: 该用户设备在目标小区的广播 信道上接收该公共信道的配置信息; 或者该用户设备接收该 RNC通过 RRC 信令发送的该公共信道的配置信息。
第二方面, 提出了一种小区切换的方法, 用户设备的服务小区为宏小区 覆盖范围下的任一微小区, 包括: 该用户设备在下行失步后停止上行发射; 在预定的时间后该用户设备在该宏小区上接收 RNC发送的服务小区切换消 息; 该用户设备根据该服务小区切换消息, 将该用户设备的服务小区切换到 该宏小区。
第三方面, 提出了一种用户设备, 包括: 发送单元, 用于该用户设备下 行失步后, 如果该用户设备在预定的时间内未恢复下行同步, 则向无线网络 控制器 RNC发送目标小区的切换请求消息以请求该 RNC将该用户设备的服 务小区切换到该目标小区; 接收单元, 用于在该目标小区上接收该 RNC发 送的服务小区切换消息; 切换单元, 用于将该用户设备的服务小区切换到该 目标小区。
在第一种可能的实现方式中, 结合第三方面, 具体实现为: 该接收单元 还用于该用户设备下行失步后在至少一个非服务小区的下行链路接收发射 功率控制消息, 其中, 该至少一个非服务小区在该用户设备的激活集中, 且 该至少一个非服务小区的下行链路是可靠接收的。 该用户设备还包括: 功控 单元, 用于根据该发射功率控制消息进行上行功控以保证该用户设备的上行 链路的连接。
在第二种可能的实现方式中,结合第三方面或第三方面的第一种可能的 实现方式, 具体实现为: 该目标小区的切换请求消息包括该目标小区的测量 消息。
在第三种可能的实现方式中, 结合第三方面的第二种可能的实现方式, 具体实现为: 该目标小区的测量消息携带该目标小区成为该用户设备的最优 小区的 1D测量事件。 在第四种可能的实现方式中,结合第三方面或第三方面的第一种可能的 实现方式,具体实现为:该目标小区的切换请求消息包括 RRC消息,该 RRC 消息携带该用户设备请求切换到该目标小区的信息。
在第五种可能的实现方式中,结合第三方面或第三方面的第一种可能的 实现方式至第三方面的第四种可能的实现方式中任一种可能的实现方式, 具 体实现为: 目标小区在该用户设备的激活集中, 或该目标小区在该用户设备 的激活集外。
在第六种可能的实现方式中, 结合第三方面的第五种可能的实现方式, 该接收单元具体实现为: 如果该目标小区在该用户设备的激活集中, 则在该 目标小区的高速共享控制信道 HS-SCCH上接收该 RNC发送的服务小区切换 消息。
在第七种可能的实现方式中,结合第三方面的第六种可能的实现方式中 任一种可能的实现方式, 具体实现为: 该发送单元还用于在该用户设备下行 失步之前, 向该 RNC发送该目标小区的 1A或 1C事件以便该 RNC将该目 标小区加入该用户设备的激活集中; 该接收单元还用于接收该 RNC发送的 激活集更新 ASU消息, 该 ASU消息携带该目标小区的高速下行共享信道无 线网络标识 H-RNTI和 HS-SCCH信道配置参数,该 ASU消息指示该用户设 备将该目标小区加入到该用户设备的激活集中; 该接收单元还用于根据该 H-RNTI和 HS-SCCH信道配置参数在该目标小区的 HS-SCCH上接收该 RNC 发送的服务小区切换消息。
在第八种可能的实现方式中, 结合第三方面的第五种可能的实现方式, 具体实现为: 该接收单元还用于如果该目标小区在该用户设备的激活集外, 则在该目标小区的公共信道上接收该 RNC发送的服务小区切换消息。
在第九种可能的实现方式中, 结合第三方面的第八种可能的实现方式, 具体实现为: 该公共信道为前向接入信道 FACH。
在第十种可能的实现方式中,结合第三方面的第八种可能的实现方式或 第三方面的第九种可能的实现方式, 具体实现为: 该接收单元还用于在目标 小区的广播信道上接收该公共信道的配置信息; 或者该接收单元还用于接收 该 RNC通过 RRC信令发送的该公共信道的配置信息。
第四方面, 提供了一种用户设备, 该用户设备的服务小区为宏小区覆盖 范围下的任一微小区, 包括: 发送单元, 用于该用户设备下行失步后停止上 行发射; 接收单元, 用于在预定的时间后在该宏小区上接收 RNC发送的服 务小区切换消息; 切换单元, 用于根据该服务小区切换消息, 将该用户设备 的服务小区切换到该宏小区。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例或现有技 术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图 仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造 性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 la是本发明实施例小区切换的方法流程图。
图 lb是本发明实施例小区切换的另一方法流程图。
图 2是本发明实施例小区切换的交互流程图。
图 3是本发明实施例小区切换的另一交互流程图。
图 4是本发明实施例小区切换的另一方法流程图。
图 5是本发明实施例小区切换的另一交互流程图。
图 6是本发明实施例用户设备的结构示意图。
图 7是本发明实施例另一用户设备的结构示意图。
图 8是本发明实施例另一用户设备的结构示意图。
图 9是本发明实施例另一用户设备的结构示意图。 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, 所描述的实施例是本发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创 造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
用户设备 ( UE , User Equipment ) , 也可称之为移动终端 ( Mobile Terminal ),移动用户设备等, 可以经无线接入网(例如, RAN, Radio Access Network )与一个或多个核心网进行通信, 用户设备可以是移动终端, 如移 动电话(或称为"蜂窝"电话)和具有移动终端的计算机, 例如, 可以是便携 式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它们与无线接入 网交换语言和 /或数据。 基站,可以是 GSM或 CDMA中的基站( BTS, Base Transceiver Station ), 也可以是 WCDMA中的基站( NodeB或 NB ) , 还可以是 LTE中的演进型基 站( eNB或 e-NodeB, evolved Node B ), 本发明并不限定, 但为描述方便, 下述实施例以 NB为例进行说明。
在软切换过程中, UE可能触发以下同频测量事件, 具体如下:
1A 事件: 用来添加激活集小区。 当一个激活集外小区好于 告范围, 触发 1A事件。
1B 事件: 用来删除激活集小区。 当一个激活集内小区差于才艮告范围, 触发 1B事件。
1C 事件: 用来将激活集外小区替换激活集内小区。 当一个激活集外小 区好于一个激活集内小区, 触发 1C事件。
1D事件: 用来更新激活集最优小区。 当最优小区发生改变时, 触发 1D 事件。
1E事件: 一个小区好于一个绝对阈值(网侧规定), 触发 1E事件。 1F事件: 一个小区差于一个绝对阈值(网侧规定), 触发 1F事件。 图 la是本发明实施例小区切换的方法流程图。图 la的方法由 UE执行。 101 , UE在下行失步后, 如果 UE在预定的时间内未恢复下行同步, 则 UE向无线网络控制器 (Radio network control, RNC)发送目标小区的切换请 求消息以请求该 RNC将 UE的服务小区切换到该目标小区。
102, UE在该目标小区上接收该 RNC发送的服务小区切换消息。
103 , UE根据根据该服务小区切换消息将 UE的服务小区切换到该目标 小区。
本发明实施例中, UE在下行失步后预定的时间内未恢复下行同步, 可 向 RNC发送目标小区的切换请求消息以将服务小区切换到目标小区, 从而 解决了微站快衰导致 UE的失步问题。
可选地, 作为一个实施例, 如图 lb所示, 在步骤 101之前, 还可包括:
104, UE在下行失步后, 通过在至少一个非服务小区的下行链路接收的 发射功率控制消息(Transmission Power Control , TPC )。 其中, 该至少一个 非服务小区在 UE的激活集中, 且该至少一个非服务小区的下行链路是可靠 接收的。
105 , UE可根据该发射功率控制消息进行上行功控以保证 UE的上行链 路的连接。
激活集(Active Set ), 是指与用户设备建立连接的小区的集合, 用户通 过激活集的小区收发信息。
监测集(Monitor Set ), 是指不在激活集中, 但是根据通用移动通信系 统陆地无线接入网 ( Universal Mobile Telecommunication System Territorial Access Networ, UTRAN )分配的相邻节点列表而被监测的小区的集合。
检测集(Detected Set )是指不在网络侧下发的监测集列表中, 但是能够 被 UE检测到的小区的集合。 UE在进行同频测量时, 除了对激活集和监测 集的小区进行测量外, 还可能对检测集进行测量。 检测集中的小区也可能进 入 UE的激活集中。
在某些情况下, 当失步判决只是针对服务小区的下行链路进行评估的时 候,如果激活集中存在至少一个非服务小区的下行链路是可靠接收的,可利用 该非服务小区的下行链路接收 TPC消息进行上行功控。
可选地, 作为另一个实施例, 由于下行失步的时间较短, 可认为上行链 路的连接是正常的。
可选地, 作为一个实施例, 目标小区的切换请求消息, 可以包括目标小 区的测量消息。
进一步地, 目标小区的测量消息, 可携带目标小区成为 UE的最优小区 的 1D测量事件。
可选地, 可选地, 作为另一个实施例, 目标小区的切换请求消息, 可以 包括无线资源控制( Radio Resource Control, RRC )消息, 该 RRC消息中可 携带 UE请求切换到目标小区的信息。
可选地, UE的目标小区, 可以在 UE的激活集中, 也可以在 UE的激活 集外。
UE的目标小区在 UE的激活集外,是说 UE的目标小区可能从 UE的监 测集中选取, 也可能从 UE的检测集中选取。 UE选取的目标小区, 应该是 符合测量条件, 能够避免 UE失步的小区。 优选地, UE的目标小区, 是 UE 的激活集、 监测集和检测集之中的最优小区。
可选地, 作为一个实施例, 如果目标小区在 UE的激活集中, 则 UE可 在目标小区的高速共享控制信道 HS-SCCH信道上接收该 RNC发送的服务小 区切换消息。 进一步的, 该方法还包括: UE向所述 RNC发送所述目标小区的 1A或 1C事件以便所述 RNC将所述目标小区加入 UE的激活集中; UE接收所述 RNC发送的激活集更新( Active Set Update, ASU )消息, 该 ASU消息可携 带所述目标小区的 ( High Speed Downlink Shared Channel Radio Network Temporary Identifier, H-RNTI )和高速物理层下行共享控制信道( High Speed Physical Downlink Shared Control Channel, HS-SCCH ) 配置参数; UE在目 标小区的 HS-SCCH上接收该 RNC发送的服务小区切换消息具体可实现为: UE可根据 H-RNTI和 HS-SCCH信道配置参数在目标小区的 HS-SCCH信道 上接收该 RNC发送的服务小区切换消息。
可选地, 作为另一个实施例, 如果目标小区在 UE的激活集外, 则 UE 可在目标小区的公共信道上接收该 RNC发送的服务小区切换消息。
进一步的, 该公共控制信道可以是前向接入信道 (Forward Access Channel, FACH )。
进一步地, 该方法还包括: UE在广播信道上接收该公共信道的配置信 息, 或者, UE接收该 RNC通过 RRC信令发送的该公共信道的配置信息。
图 2是本发明实施例小区切换的交互流程图。 本发明实施例中, UE选 择的目标小区为激活集中的小区。
201 , UE上报目标小区的 1A或 1C事件。
UE发现激活集外的一个小区好于报告范围, 上报该小区的 1A事件。 或者, UE发现激活集外的一个小区好于激活集内的小区, 上报该小区的 1C 事件。
202, RNC发送 ASU消息, 携带目标小区的高速下行共享信道无线网 给标识 ( High Speed Downlink Shared Channel Radio Network Temporary Identifier, H-RNTI ), 高速物理层下行共享控制信道(High Speed Physical Downlink Shared Control Channel, HS-SCCH ) 配置信息。
RNC接收到目标小区的 1 A或 1C事件, 向 UE发送 ASU消息, 将目标 小区加入到 UE的激活集中。其中,该 ASU消息可携带目标小区的 H-RNTI、 HS-SCCH配置信息等参数。
203, UE发现下行失步。
UE发现下行失步后, 在较短的一段时间内, 可认为 UE的上行链接是 正常的。 在某些情况下, 当失步判决只是针对服务小区的下行链路进行评估的时 候,如果激活集中存在至少一个非服务小区的下行链路是可靠接收的,可利用 该非服务小区的下行链路接收 TPC消息进行上行功控。 UE通过在激活集中 非服务小区的下行链路上接收的 TPC消息进行上行功控,从而保持 UE的上 行链路的连接。
204, 如果 UE发现在 T1时间内未恢复下行同步, 则 UE向 RNC发送 目标小区的切换请求消息。
其中, T1为预定的时间, 可由网络侧 (如 RNC )或协议决定。
可选地, 目标小区的切换请求消息, 可以包括目标小区的测量消息。 例 如, 目标小区的测量消息, 可携带目标小区称为 UE的最优小区的 1D测量 事件。
可选地, 目标小区的切换请求消息, 还可以包括一般的无线资源控制 ( Radio Resource Control, RRC )消息, 其中, 该 RRC消息中可携带 UE请 求切换到目标小区的信息。
205 , UE利用目标小区的 H-RNTI, HS-SCCH配置信息在目标小区接收 服务小区切换消息。
UE向 RNC上艮测量消息后, 根据之前接收到的目标小区的 H-RNTI, HS-SCCH配置信息, 在目标小区上监听 HS-SCCH信道, 并在目标小区的 HS-SCCH信道上接收服务小区切换消息。
206, UE将服务小区切换到目标小区。
UE接收到服务小区切换消息后, 将服务小区切换到目标小区。
207, UE发送服务小区切换确认消息。
UE切换成功后, 向 RNC发送服务小区切换确认消息。
图 3是本发明实施例小区切换的另一交互流程图。本发明实施例中, UE 选择的目标小区为激活集外的小区。
301 , UE上报目标小区的 1A或 1C事件。
UE发现激活集外的一个小区好于报告范围, 上报该小区的 1A事件。 或者, UE发现激活集外的一个小区好于激活集内的小区, 上报该小区的 1C 事件。
302, UE未接收到 RNC发送的 ASU消息。
UE可能因为移动速度较快, 或者是其它原因, 未能接收到 RNC发送的 ASU消息, 因而未能将目标小区加入到激活集中。 此时, 目标小区处于 UE 的激活集外。
303 , UE发现下行失步。
UE发现下行失步后, 如果激活集中不存在服务小区之外的小区, 在较 短的一段时间内, 可认为 UE的上行链接是正常的。
在某些情况下, 当失步判决只是针对服务小区的下行链路进行评估的时 候,如果激活集中存在至少一个非服务小区的下行链路是可靠接收的,可利用 该非服务小区的下行链路接收 TPC消息进行上行功控。 UE通过在激活集中 非服务小区的下行链路上接收的 TPC消息进行上行功控,从而保持 UE的上 行链路的连接。
304, 如果 UE发现在 T1时间内未恢复下行同步, 则 UE向 RNC发送 目标小区的切换请求消息。
其中, T1为预定的时间, 可由网络侧 (如 RNC )或协议决定。
可选地, 目标小区的切换请求消息,可以是目标小区的测量消息。例如, 目标小区的测量消息,可携带目标小区成为 UE的最优小区的 1D测量事件。
可选地, 目标小区的切换请求消息, 还可以包括一般的无线资源控制 ( Radio Resource Control, RRC )消息, 其中, 该 RRC消息中可携带 UE请 求切换到目标小区的信息。
305, UE通过目标小区的公共信道接收 RNC发送的服务小区切换消息。 其中, 该服务小区切换消息中可包含 UE的标识信息, 例如用户设备无 线网给标识 ( User Equipment Radio Network Temporary Identifier, U-RNTI ), UE可根据服务小区切换消息中的 UE标识判断是否为自身的服务小区切换 消息。 目标小区的公共信道, 可以为前向随机接入信道( Forward Access Channel, FACH )信道。 UE可使用公共网络暂时标识来接收公共信道的消 息, 例如公共 H-RNTI。
可选地, 公共信道的配置信息, 可以从广播信道获取, 也可以在切换前 由 RNC通过 RRC信令进行预配置。
306, UE将服务小区切换到目标小区。
UE接收到服务小区切换消息后, 将服务小区切换到目标小区。
307, UE发送服务小区切换确认消息。
UE切换成功后, 向 RNC发送服务小区切换确认消息 图 4是本发明实施例小区切换的另一方法流程图。 图 4的方法由 UE执 行。 UE 的服务小区为宏小区覆盖范围下的任一微小区。 需要说明的是, 本 发明中提到的宏小区指宏基站直接管辖的小区,微小区指宏小区覆盖范围下 的微基站管辖的小区。
401 , UE在下行失步后停止上行发射。
402, UE在预定的时间后在宏小区上接收 RNC发送的服务小区切换消 息。
403 , UE根据该服务小区切换消息, 将该 UE的服务小区切换到该宏小 区。
本发明实施例中, UE通过在下行失步后停止上行发射以提醒网络侧 UE 发生失步, 并在预定的时间后在宏小区上接收服务小区切换消息以将服务小 区切换到宏小区, 从而解决了微站快衰导致 UE的失步问题。
图 5是本发明实施例小区切换的另一交互流程图。
501 , UE发现下行失步, 停止上行发射。
502, 一段时间后, UE的激活集中的小区通过评估发现 UE上行失步。
UE停止上行发射一段时间后, UE的激活集中的小区通过评估, 可发现 UE上行失步。
503 , 激活集小区向 RNC发送 UE失步的信息。
504, RNC在宏小区的公共信道上发送服务小区切换消息。
RNC接收到 UE失步的信息后, 将宏小区作为 UE切换的目标小区, 并 在宏小区的公共信道上发送服务小区切换消息。该服务小区切换消息可携带 UE的标识信息。
505 , UE在宏小区的公共信道上接收服务小区切换消息。
经过预定时间后, UE可在宏小区的公共信道上接收服务小区切换消息。 这个预定时间的长短, 与微基站评估发现 UE失步的时间、 微基站上报 UE 失步的时间和 RNC发送服务小区切换消息的时间有关,可由 RNC或其它网 络侧网元决定, 本发明在此不做限制。
506, UE根据服务小区切换消息将服务小区切换到宏小区。
507, UE向 RNC发送服务小区切换确认消息。
图 6是本发明实施例 UE 600的结构示意图。 UE 600可包括: 发送单元
601、 接收单元 602和切换单元 603。 发送单元 601 , 可在 UE 600下行失步后, 如果 UE 600在预定的时间内 未恢复下行同步, 则向 RNC发送目标小区的测量消息以请求该 RNC将 UE 600的服务小区切换到该目标小区。
接收单元 602, 可在该目标小区上接收该 RNC发送的服务小区切换消 息。
切换单元 603, 可根据该服务小区切换消息将 UE 600的服务小区切换 到该目标小区。
本发明实施例中, UE 600在下行失步后预定的时间内未恢复下行同步, 可向 RNC发送目标小区的切换请求消息以将服务小区切换到目标小区, 从 而解决了微站快衰导致 UE的失步问题。
可选地, 作为一个实施例, 接收单元 602还可用于 UE 600下行失步后 在至少一个非服务小区的下行链路接收发射功率控制消息。 UE 600还可包 括: 功控单元 604, 可根据该发射功率控制消息进行上行功控以保证 UE 600 的上行链路的连接。 其中, 该至少一个非服务小区在 UE 600的激活集中, 且该至少一个非服务小区的下行链路是可靠接收的。
可选地, 作为一个实施例, 该目标小区的切换请求消息可以包括该目标 小区的测量消息。 进一步地, 该目标小区的测量消息可携带该目标小区成为 UE 600的最优小区的 1D测量事件。
可选地,作为另一个实施例,该目标小区的切换请求消息可以包括 RRC 消息, 该 RRC消息可携带 UE 600请求切换到该目标小区的信息。
可选地, 该目标小区可在 UE 600的激活集中, 或者该目标小区可在 UE 600的激活集外。
可选地, 作为一个实施例, 如果该目标小区在 UE 600的激活集中, 则 接收单元 602具体可在该目标小区的 HS-SCCH上接收该 RNC发送的服务小 区切换消息。 进一步地, 发送单元 601还可在 UE 600下行失步之前, 向该 RNC发送该目标小区的 1A或 1C事件以便该 RNC将该目标小区加入 UE 600 的激活集中; 接收单元 602还可接收该 RNC发送的 ASU消息, 该 ASU消 息携带该目标小区的 H-RNTI和 HS-SCCH信道配置参数,该 ASU消息指示 UE 600将该目标小区加入到 UE 600的激活集中; 接收单元 602还可根据该 H-RNTI和 HS-SCCH信道配置参数在该目标小区的 HS-SCCH上接收该 RNC 发送的服务小区切换消息。 可选地, 作为另一个实施例, 如果该目标小区在 UE 600的激活集外, 则接收单元 602具体还可在该目标小区的公共信道上接收该 RNC发送的服 务小区切换消息。进一步地, 该公共信道为 FACH。进一步地,接收单元 602 还可在目标小区的广播信道上接收该公共信道的配置信息; 或者接收单元 602还可接收该 RNC通过 RRC信令发送的该公共信道的配置信息。
UE 600还可执行图 1的方法,实现 UE在图 2、图 3的实施例中的功能, 本发明在此不再赘述。
图 7是本发明实施例 UE 700的结构示意图。 UE 700的服务小区为宏小 区覆盖范围下的任一微小区。 UE 700可包括: 发送单元 701、 接收单元 702 和切换单元 703。
发送单元 701 , 可在 UE 700下行失步后停止上行发射。
接收单元 702, 可在预定的时间后在该宏小区上接收 RNC发送的服务 小区切换消息。
切换单元 703, 可根据该服务小区切换消息, 将 UE 700的服务小区切 换到该宏小区。
本发明实施例中, UE 700通过在下行失步后停止上行发射以提醒网络 侧 UE 700发生失步, 并在预定的时间后在宏小区上接收服务小区切换消息 以将服务小区切换到宏小区,从而解决了微站快衰导致 UE 700的失步问题。
UE 700还可执行图 4的方法, 实现 UE在图 5的实施例中的功能, 本发 明在此不再赘述。
图 8是本发明实施例 UE 800的结构示意图。 UE 800可包括:发射器 801、 接收器 804、 处理器 802和存储器 803。
发射器 801 , 可在 UE 800下行失步后, 如果 UE 800在预定的时间内未 恢复下行同步,则向 RNC发送目标小区的测量消息以请求该 RNC将 UE 800 的服务小区切换到该目标小区。
接收器 804, 可该目标小区上接收该 RNC发送的服务小区切换消息。 处理器 802, 可根据该服务小区切换消息将 UE 800的服务小区切换到 该目标小区。
存储器 803,可存储使得处理器 802根据该服务小区切换消息将 UE 800 的服务小区切换到该目标小区的指令。
本发明实施例中, UE 800在下行失步后预定的时间内未恢复下行同步, 可向 RNC发送目标小区的切换请求消息以将服务小区切换到目标小区, 从 而解决了微站快衰导致 UE的失步问题。
处理器 802控制用户设备 800 的操作, 处理器 802还可以称为 CPU ( Central Processing Unit, 中央处理单元)。 存储器 803可以包括只读存储器 和随机存取存储器, 并向处理器 802提供指令和数据。 存储器 803的一部分 还可以包括非易失性随机存取存储器 (NVRAM )。 具体的应用中, 发射器 801和接收器 804可以耦合到天线 805。 用户设备 800的各个组件通过总线 系统 806耦合在一起, 其中总线系统 806除包括数据总线之外, 还可以包括 电源总线、 控制总线和状态信号总线等。 但是为了清楚说明起见, 在图中将 各种总线都标为总线系统 806。
上述本发明实施例揭示的方法可以应用于处理器 802中,或者由处理器 802实现。 处理器 802可能是一种集成电路芯片, 具有信号的处理能力。 在 实现过程中, 上述方法的各步骤可以通过处理器 802中的硬件的集成逻辑电 路或者软件形式的指令完成。 上述的处理器 802可以是通用处理器、 数字信 号处理器(DSP )、 专用集成电路(ASIC )、 现成可编程门阵列 (FPGA )或 者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件。 可以 实现或者执行本发明实施例中的公开的各方法、 步骤及逻辑框图。 通用处理 器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明 实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成, 或者 用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存 储器, 闪存、 只读存储器, 可编程只读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。该存储介质位于存储器 803,处理器 802 读取存储器 803中的信息, 结合其硬件完成上述方法的步骤。
可选地, 作为一个实施例, 接收器 804还可用于 UE 800下行失步后在 至少一个非服务小区的下行链路接收发射功率控制消息。处理器 802还可根 据该发射功率控制消息进行上行功控以保证 UE 800的上行链路的连接。 其 中, 该至少一个非服务小区在 UE 800的激活集中, 且该至少一个非服务小 区的下行链路是可靠接收的。
可选地, 作为一个实施例, 该目标小区的切换请求消息可以包括该目标 小区的测量消息。 进一步地, 该目标小区的测量消息可携带该目标小区成为 UE 800的最优小区的 1D测量事件。 可选地,作为另一个实施例,该目标小区的切换请求消息可以包括 RRC 消息, 该 RRC消息可携带 UE 800请求切换到该目标小区的信息。
可选地, 该目标小区可在 UE 800的激活集中, 或者该目标小区可在 UE 800的激活集外。
可选地, 作为一个实施例, 如果该目标小区在 UE 800的激活集中, 则 接收器 804具体可在该目标小区的 HS-SCCH上接收该 RNC发送的服务小区 切换消息。 进一步地, 发射器 801还可在 UE 800下行失步之前, 向该 RNC 发送该目标小区的 1A或 1C事件以便该 RNC将该目标小区加入 UE 800的 激活集中; 接收器 804还可接收该 RNC发送的 ASU消息, 该 ASU消息携 带该目标小区的 H-RNTI和 HS-SCCH信道配置参数, 该 ASU消息指示 UE 800将该目标小区加入到 UE 800的激活集中;接收器 804还可根据该 H-RNTI 和 HS-SCCH信道配置参数在该目标小区的 HS-SCCH上接收该 RNC发送的 服务小区切换消息。
可选地, 作为另一个实施例, 如果该目标小区在 UE 800的激活集外, 则接收器 804具体还可在该目标小区的公共信道上接收该 RNC发送的服务 小区切换消息。 进一步地, 该公共信道为 FACH。 进一步地, 接收器 804还 可在目标小区的广播信道上接收该公共信道的配置信息; 或者接收器 804还 可接收该 RNC通过 RRC信令发送的该公共信道的配置信息。
UE 800还可执行图 1的方法,实现 UE在图 2、图 3的实施例中的功能, 本发明在此不再赘述。
图 9是本发明实施例 UE 900的结构示意图。 UE 900的服务小区为宏小 区覆盖范围下的任一微小区。 UE 900可包括: 发射器 901、 接收器 904、 处 理器 902和存储器 903。
发射器 901 , 可在 UE 900下行失步后, 停止上行发射。
接收器 904, 可可在预定的时间后在该宏小区上接收 RNC发送的服务 小区切换消息。
处理器 902, 可根据该服务小区切换消息, 将 UE 900的服务小区切换 到该目标小区。
存储器 903,可存储使得处理器 902根据该服务小区切换消息将 UE 900 的服务小区切换到该宏小区的指令。
本发明实施例中, UE 900通过在下行失步后停止上行发射以提醒网络 侧 UE 900发生失步, 并在预定的时间后在宏小区上接收服务小区切换消息 以将服务小区切换到宏小区,从而解决了微站快衰导致 UE 900的失步问题。
处理器 902控制用户设备 900 的操作, 处理器 902还可以称为 CPU ( Central Processing Unit, 中央处理单元)。 存储器 903可以包括只读存储器 和随机存取存储器, 并向处理器 902提供指令和数据。 存储器 903的一部分 还可以包括非易失性随机存取存储器 (NVRAM )。 具体的应用中, 发射器 901和接收器 904可以耦合到天线 905。 用户设备 900的各个组件通过总线 系统 906耦合在一起, 其中总线系统 906除包括数据总线之外, 还可以包括 电源总线、 控制总线和状态信号总线等。 但是为了清楚说明起见, 在图中将 各种总线都标为总线系统 906。
上述本发明实施例揭示的方法可以应用于处理器 902中,或者由处理器 902实现。 处理器 902可能是一种集成电路芯片, 具有信号的处理能力。 在 实现过程中, 上述方法的各步骤可以通过处理器 902中的硬件的集成逻辑电 路或者软件形式的指令完成。 上述的处理器 902可以是通用处理器、 数字信 号处理器(DSP )、 专用集成电路(ASIC )、 现成可编程门阵列 (FPGA )或 者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件。 可以 实现或者执行本发明实施例中的公开的各方法、 步骤及逻辑框图。 通用处理 器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明 实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成, 或者 用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存 储器, 闪存、 只读存储器, 可编程只读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。该存储介质位于存储器 903,处理器 902 读取存储器 903中的信息, 结合其硬件完成上述方法的步骤。
UE 900还可执行图 4的方法, 实现 UE在图 5的实施例中的功能, 本发 明在此不再赘述。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和筒洁, 上述描 述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一 个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使 用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部 分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前 述的存储介质包括: U盘、移动硬盘、只读存储器( ROM, Read-Only Memory )、 随机存取存储器(RAM, Random Access Memory ), 磁碟或者光盘等各种可 以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准。

Claims

权利要求
1、 一种小区切换方法, 其特征在于, 包括:
用户设备在下行失步后,如果所述用户设备在预定的时间内未恢复下行 同步, 则所述用户设备向无线网络控制器 RNC发送目标小区的切换请求消 息以请求所述 RNC将所述用户设备的服务小区切换到所述目标小区;
所述用户设备在所述目标小区上接收所述 RNC发送的服务小区切换消 息;
所述用户设备根据所述服务小区切换消息将所述用户设备的服务小区 切换到所述目标小区。
2、 如权利要求 1所述的方法, 其特征在于, 还包括:
所述用户设备在下行失步后通过在至少一个非服务小区的下行链路接 收的发射功率控制消息, 其中, 所述至少一个非服务小区在所述用户设备的 激活集中, 且所述至少一个非服务小区的下行链路是可靠接收的;
所述用户设备根据所述发射功率控制消息进行上行功控以保证所述用 户设备的上行链路的连接。
3、 如权利要求 1或 2所述的方法, 其特征在于, 所述目标小区的切换 请求消息包括所述目标小区的测量消息。
4、 如权利要求 3所述的方法, 其特征在于, 所述目标小区的测量消息 携带所述目标小区成为所述用户设备的最优小区的 1D测量事件。
5、 如权利要求 1或 2所述的方法, 其特征在于, 所述目标小区的切换 请求消息包括无线资源控制 RRC消息, 所述 RRC消息携带所述用户设备请 求切换到所述目标小区的信息。
6、 如权利要求 1至 5任一项所述的方法, 其特征在于, 所述目标小区 在所述用户设备的激活集中, 或所述目标小区在所述用户设备的激活集外。
7、 如权利要求 6所述的方法, 其特征在于, 所述用户设备在所述目标 小区上接收所述 RNC发送的服务小区切换消息包括:
如果所述目标小区在所述用户设备的激活集中, 则所述用户设备在所述 目标小区的高速共享控制信道 HS-SCCH上接收所述 RNC发送的服务小区切 换消息。
8、 如权利要求 7所述的方法, 其特征在于, 在所述用户设备下行失步 之前, 还包括: 所述用户设备向所述 RNC发送所述目标小区的 1A或 1C事件以便所述 RNC将所述目标小区加入所述用户设备的激活集中;
所述用户设备接收所述 RNC发送的激活集更新 ASU消息, 所述 ASU 消息携带所述目标小区的高速下行共享信道无线网络标识 H-RNTI 和 HS-SCCH信道配置参数, 所述 ASU消息指示所述用户设备将所述目标小区 加入到所述用户设备的激活集中;
所述用户设备在所述目标小区的 HS-SCCH上接收所述 RNC发送的服务 小区切换消息包括: 所述用户设备根据所述 H-RNTI和 HS-SCCH信道配置 参数在所述目标小区的 HS-SCCH上接收所述 RNC发送的服务小区切换消 息。
9、 如权利要求 6所述的方法, 其特征在于, 所述用户设备在所述目标 小区上接收所述 RNC发送的服务小区切换消息包括:
如果所述目标小区在所述用户设备的激活集外, 则所述用户设备在所述 目标小区的公共信道上接收所述 RNC发送的服务小区切换消息。
10、 如权利要求 9所述的方法, 其特征在于, 所述公共信道为前向接入 信道 FACH。
11、 如权利要求 9或 10所述的方法, 其特征在于, 还包括:
所述用户设备在目标小区的广播信道上接收所述公共信道的配置信息; 或者
所述用户设备接收所述 RNC通过 RRC信令发送的所述公共信道的配置 信息。
12、 一种小区切换方法, 其特征在于, 用户设备的服务小区为宏小区覆 盖范围下的任一微小区, 包括:
所述用户设备在下行失步后, 停止上行发射;
在预定的时间后,所述用户设备在目标小区上接收无线网络控制器 RNC 发送的服务小区切换消息;
所述用户设备根据所述服务小区切换消息,将所述用户设备的服务小区 切换到所述目标小区。
13、 一种用户设备, 其特征在于, 包括:
发送单元, 用于所述用户设备下行失步后, 如果所述用户设备在预定的 时间内未恢复下行同步, 则向无线网络控制器 RNC发送目标小区的切换请 求消息以请求所述 RNC将所述用户设备的服务小区切换到所述目标小区; 接收单元, 用于在所述目标小区上接收所述 RNC发送的服务小区切换 消息;
切换单元, 用于将所述用户设备的服务小区切换到所述目标小区。
14、 如权利要求 13所述的用户设备, 其特征在于,
所述接收单元还用于所述用户设备下行失步后在至少一个非服务小区 的下行链路接收发射功率控制消息, 其中, 所述至少一个非服务小区在所述 用户设备的激活集中, 且所述至少一个非服务小区的下行链路是可靠接收 的;
所述用户设备还包括: 功控单元, 用于根据所述发射功率控制消息进行 上行功控以保证所述用户设备的上行链路的连接。
15、 如权利要求 13或 14所述的用户设备, 其特征在于, 所述目标小区 的切换请求消息包括所述目标小区的测量消息。
16、 如权利要求 15所述的用户设备, 其特征在于, 所述目标小区的测 量消息携带所述目标小区成为所述用户设备的最优小区的 1D测量事件。
17、 如权利要求 13或 14所述的用户设备, 其特征在于, 所述目标小区 的切换请求消息包括无线资源控制 RRC消息, 所述 RRC消息携带所述用户 设备请求切换到所述目标小区的信息。
18、 如权利要求 13至 17任一项所述的用户设备, 其特征在于, 所述目 标小区在所述用户设备的激活集中,或所述目标小区在所述用户设备的激活 集外。
19、 如权利要求 18所述的用户设备, 其特征在于, 所述接收单元具体 用于: 如果所述目标小区在所述用户设备的激活集中, 则在所述目标小区的 高速共享控制信道 HS-SCCH上接收所述 RNC发送的服务小区切换消息。
20、 如权利要求 19所述的用户设备, 其特征在于,
所述发送单元还用于在所述用户设备下行失步之前, 向所述 RNC发送 所述目标小区的 1A或 1C事件以便所述 RNC将所述目标小区加入所述用户 设备的激活集中;
所述接收单元还用于接收所述 RNC发送的激活集更新 ASU消息,所述 ASU 消息携带所述目标小区的高速下行共享信道无线网络标识 H-RNTI和 HS-SCCH信道配置参数, 所述 ASU消息指示所述用户设备将所述目标小区 加入到所述用户设备的激活集中;
所述接收单元还用于根据所述 H-RNTI和 HS-SCCH信道配置参数在所 述目标小区的 HS-SCCH上接收所述 RNC发送的服务小区切换消息。
21、 如权利要求 18所述的用户设备, 其特征在于, 所述接收单元还用 于如果所述目标小区在所述用户设备的激活集外, 则在所述目标小区的公共 信道上接收所述 RNC发送的服务小区切换消息。
22、 如权利要求 21所述的用户设备, 其特征在于, 所述公共信道为前 向接入信道 FACH。
23、 如权利要求 21或 22所述的用户设备, 其特征在于,
所述接收单元还用于在目标小区的广播信道上接收所述公共信道的配 置信息; 或者
所述接收单元还用于接收所述 RNC通过 RRC信令发送的所述公共信道 的配置信息。
24、 一种用户设备, 其特征在于, 所述用户设备的服务小区为宏小区覆 盖范围下的任一微小区, 包括:
发送单元, 用于在所述用户设备下行失步后停止上行发射;
接收单元, 用于在预定的时间后在所述宏小区上接收 RNC发送的服务 小区切换消息;
切换单元, 用于根据所述服务小区切换消息, 将所述用户设备的服务小 区切换到所述宏小区。
PCT/CN2014/072891 2013-03-29 2014-03-05 小区切换的方法和用户设备 WO2014154082A1 (zh)

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