WO2015081676A1 - 一种小区间软切换方法及实现装置 - Google Patents

一种小区间软切换方法及实现装置 Download PDF

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Publication number
WO2015081676A1
WO2015081676A1 PCT/CN2014/079288 CN2014079288W WO2015081676A1 WO 2015081676 A1 WO2015081676 A1 WO 2015081676A1 CN 2014079288 W CN2014079288 W CN 2014079288W WO 2015081676 A1 WO2015081676 A1 WO 2015081676A1
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Prior art keywords
cell
soft handover
user equipment
macro cell
macro
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PCT/CN2014/079288
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English (en)
French (fr)
Inventor
詹建明
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中兴通讯股份有限公司
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Priority to EP14866861.9A priority Critical patent/EP3079402B1/en
Publication of WO2015081676A1 publication Critical patent/WO2015081676A1/zh

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    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists

Definitions

  • the present invention relates to the field of UMTS network performance improvement, and in particular, to an inter-cell soft handover method and an implementation apparatus. Background technique
  • UMTS Universal Mobile Telecommunications System
  • 3GPP International Organization for Standardization
  • CDMA Code Division Multiple Access
  • packetized core network a series of technical specifications and interface protocols such as CDMA access network and packetized core network.
  • the downlink coverage boundary of the macro cell and the low power cell are not in the same location as the uplink coverage boundary (that is, the uplink boundary and the downlink boundary are different), that is, there are uplink and downlink unbalanced regions.
  • the soft handover process measurement report reported by the mobile phone is triggered by the received downlink signal strength, so that there is a difference between the uplink and downlink unbalanced area and the soft handover area, refer to FIG.
  • the difference may cause the macro cell to receive the uplink signal from the soft handover area user equipment UE very poorly, and waste the uplink resource of the macro cell, thereby affecting the uplink processing performance of the macro cell.
  • FIG. 2 when deploying more in the macro cell In a low-power cell, more uplink processing resources will be wasted, eventually resulting in degradation of macro cell performance. This difference can also cause the macro cell user to interfere with the uplink of the low power cell.
  • the independent cell offset parameter CIO can be adjusted according to the conventional method to make the switching area cover the unbalanced area, but the difference is
  • the soft handover area user equipment UE may be subjected to downlink interference from the macro cell, refer to FIG. 3.
  • the embodiments of the present invention provide an inter-cell soft handover method and an implementation apparatus, which avoids processing resources of a macro cell of a UTMS heterogeneous network, improves uplink processing performance of the network, and avoids the result of adjustment of independent cell offset parameters. Downlink interference of the macro cell.
  • an embodiment of the present invention provides an inter-cell soft handover method, including: transmitting, to a user equipment, control information including at least a plurality of events of the same frequency measurement control and their corresponding parameters; receiving the user equipment report a measurement event report of the plurality of events; A soft handoff process is performed based on the plurality of measurement event reports.
  • the control information further includes: an independent cell offset parameter of the neighboring low power cell of the macro cell.
  • the plurality of events are set by setting the IE values in the intra-frequency measurement report to different values, and are respectively set to Eventla, Eventld, and Eventlb.
  • the setting of the Eventla event reporting range constant Rla and the hysteresis parameter Hla is the same as the parameter between the macro cells when the handover from the macro cell to the low power cell is implemented; the independent cell offset parameter used by the Eventld event (use CIO) Set to TRUE, the hysteresis parameter Hid is the same as the macro cell parameter.
  • the specific steps of performing the soft handover process include: receiving a measurement event report of the Eventla; initiating a radio link establishment to the low-power cell, and initiating activation to the user equipment a set update, adding the low power cell to an active set; receiving a measurement event report of the Eventld; transmitting an Eventlb event and a corresponding parameter to the user equipment; receiving a measurement event report of the Eventlb; to the macro cell And the low-power cell initiates radio link reconfiguration, and initiates physical channel reconfiguration and radio bearer reconfiguration to the user equipment; initiates an activation set update to the user equipment, and deletes the macro cell from the active set, and The macro cell initiates radio link deletion; sends an Eventla event and corresponding parameters to the user equipment, and completes soft handover.
  • the parameter Hla 0 ⁇ 2dB.
  • the specific steps of performing the soft handover process include: receiving a measurement event report of the Eventla; initiating a radio link establishment to the macro cell, and initiating an activation set update to the user equipment. Adding the macro cell to the active set; initiating radio link reconfiguration to the macro cell and the low power cell, and initiating physical channel reconfiguration and radio bearer reconfiguration to the user equipment; receiving the measurement of the Eventld An event report, not processing the measurement event report; receiving a measurement event report of the Eventlb; initiating an activation set update to the user equipment, deleting the low power cell from an active set, and reporting the low power cell to the low power cell Initiate wireless link deletion and complete soft handover.
  • the embodiment of the invention further provides an apparatus for implementing soft handover between cells, comprising: a sending module, configured to send, to a user equipment, control information including at least a plurality of events of the same frequency measurement control and corresponding parameters; receiving module, setting Receiving a measurement event report of the plurality of events reported by the user equipment; and executing, configured to perform a soft handover process according to the multiple measurement event reports.
  • the control information further includes: an independent cell offset parameter of the neighboring low power cell of the macro cell.
  • FIG. 1 is a schematic diagram showing uplink and downlink unbalance of a UMTS heterogeneous network
  • FIG. 2 shows an uplink and downlink channel between a soft handover area user equipment and a macro cell and a low power cell of an E-DCH serving cell being a low power cell;
  • FIG. 3 is a schematic diagram showing interference of a soft handover area user equipment from a downlink signal of a macro cell;
  • FIG. 4 is a schematic diagram showing a soft handover event and a soft handover area of a user equipment moving from a macro cell to a low power cell;
  • FIG. FIG. 6 is a flowchart of processing an Eventla soft handover event during a mobile device moving from a macro cell to a low power cell;
  • FIG. 7 is a flowchart of the user equipment from the mobile device moving from the macro cell to the low power cell; Flowchart of Eventld soft handover event in the process of moving a macro cell to a low power cell;
  • FIG. 8 is a flowchart showing an Eventlb soft handover event during a mobile device moving from a macro cell to a low power cell;
  • FIG. 9 shows a low power of the user equipment.
  • Flowchart of Eventla soft handover event during cell moving to macro cell Figure 10 shows user Flowchart of Eventld soft handover event in the process of moving from low power cell to macro cell;
  • FIG. 11 is a flowchart of Eventlb soft handover event in the process of user equipment moving from low power cell to macro cell;
  • FIG. 12 shows user equipment from FIG.
  • FIG. 13 is a schematic diagram showing the connection relationship between the uplink and downlink services when the serving cell moves from the macro cell to the low power cell in the unbalanced area when the macro cell moves to the low power cell;
  • Figure 14 is a schematic diagram showing the connection relationship between the uplink and downlink services in the soft handover area when the user equipment moves from the macro cell to the low power area;
  • Figure 15 shows the serving cell as a low power cell during the mobile device moving from the macro cell to the low power area.
  • FIG. 16 is a schematic diagram showing the connection relationship between the uplink and downlink services when the serving cell is a low-power cell in the process of moving the user equipment from the low-power cell to the macro-area;
  • FIG. 17 shows the user equipment from the low-power cell to the macro.
  • FIG. 18 is a schematic diagram showing the connection relationship between the uplink and downlink services in the unbalanced area when the user equipment moves from the low power cell to the macro area;
  • FIG. 19 shows the user equipment from the user equipment in the soft handover area.
  • FIG. 20 is a flowchart showing the basic steps of the inter-cell soft handoff method according to the embodiment of the present invention.
  • the embodiment of the present invention provides a method and device for soft handover between cells according to the problem that the performance of the macro cell caused by the waste resource of the macro cell is wasted in the prior art, and redefines a soft handover based on the three soft handover event measurement reports.
  • the process avoids the waste of processing resources of the macro cell of the UMTS heterogeneous network, improves the uplink processing performance of the network, saves the Iub transmission bandwidth of the macro cell, and avoids the macro from the macro cell offset parameter adjustment of the low power cell. Downlink interference of the cell. As shown in FIG.
  • an embodiment of the present invention provides an inter-cell soft handover method, including: Step 10: Send, to a user equipment, control information including at least a plurality of events of the same frequency measurement control and their corresponding parameters; Step 20; Receiving a measurement event report of the multiple events reported by the user equipment; Step 30: Perform a soft handover process according to the multiple measurement event reports.
  • the intra-frequency measurement control sent to the user equipment includes configuration information of multiple events, and then completes the link, activates the set update, and deletes the link according to the measurement report of the multiple events reported by the user equipment.
  • the link replacement and the serving cell change operation implement the soft handover process, avoiding waste of processing resources of the macro cell of the UMTS heterogeneous network, and improving the uplink processing performance of the network.
  • the control information in the foregoing embodiment of the present invention further includes: an independent cell offset parameter of the neighboring area of the macro cell.
  • the setting of the independent cell offset parameter CIO can make the handover area cover the unbalanced area, but the user equipment of the soft handover area is also subjected to downlink interference from the macro cell. To avoid such interference, the present invention is implemented.
  • an independent cell offset parameter CIO DU-(Rla-Hla/2) dB of the neighboring low power cell of the macro cell, where the DU is an unbalanced area.
  • the size which ranges from 4 to 7 dB, is determined according to the difference in transmit power between the macro cell and the low power cell in the actual UMTS heterogeneous network and the difference in reception sensitivity, and is not limited to a fixed value.
  • the independent cell offset parameter CIO of the low power cell neighboring macro cell is set to 0 dB.
  • the plurality of events are set by setting the IE values in the intra-frequency measurement report to different values, and Eventla, Eventld, and Eventlb are respectively set to measure events.
  • the soft handover process is completed by Eventla, Eventld, Eventlb, and three measurement event reports, which saves the Iub transmission bandwidth of the macro cell, avoids waste of processing resources of the macro cell of the UMTS heterogeneous network, and improves the uplink processing performance of the network.
  • the setting of the Eventla event reporting range constant Rla and the hysteresis parameter Hla is the same as the parameter between the macro cells; the Eventld event uses the CIO.
  • the parameter (use CIO) is set to TRUE, and the hysteresis parameter Hid is the same as the macro cell parameter.
  • Eventla, Eventld, Eventlb3 measurement event reports occur when the user equipment moves from the macro cell to the low power cell.
  • the specific step of step 30 includes: Step 301: Receive a measurement event report of the Eventla; Step 302: Initiating radio link establishment to the low-power cell, and initiating an activation set update to the user equipment, adding the low-power cell to an active set; Step 303, receiving a measurement event report of the Eventld; 304. Send an Eventlb event and corresponding parameters to the user equipment.
  • Step 305 Receive a measurement event report of the Eventlb.
  • Step 306 Initiate a radio link reconfiguration to the macro cell and the low power cell, and send the The user equipment initiates physical channel reconfiguration and radio bearer reconfiguration.
  • Step 307 Initiate an active set update to the user equipment, delete the macro cell from the active set, and initiate a radio link deletion to the macro cell.
  • Step 308 Sending an Eventla event and corresponding parameters to the user equipment to complete the soft handover.
  • the RNC after receiving the Eventla event measurement report (Measurement Report), the RNC initiates a radio link setup (RL Setup) to the low-power cell. The process then initiates an Active Set Update procedure to the user equipment to add the low power cell to the active set.
  • the RNC receives the Eventld event measurement report.
  • the HS-DSCH/E-DCH serving cell change procedure is not initiated.
  • the Eventld event the HS-DSCH serving cell of the user equipment is still a macro cell, thus avoiding the HS-DSCH serving cell of the handover area user.
  • the downlink interference from the macro cell occurs when the device is changed to a low-power cell, and the RNC sends a control message (Message control) to the user equipment, and the Intra-frequency measurement reporting criteria in the Message Control message includes synchronization.
  • the IE measuring the Intra-frequency event identity equal to lb and the corresponding report range constant Rib is set to 0, and the hysteresis parameter Hlb is set to 0 ⁇ 2 dB, so that the Eventlb measurement report is low at the lower boundary point or the lower boundary point.
  • the Hlb/2 hysteresis range of the power cell direction occurs, and the Rib is set to 0.
  • the macro cell is deleted from the active set in advance, and the macro cell can reduce the processing load of the radio link and save the macro cell uplink. Processing resources, thereby improving uplink processing performance, and also saving Iub transmission bandwidth of the macro cell. As shown in FIG.
  • the RNC in steps 305, 306, 307, and 308, after receiving the Eventlb event measurement report, the RNC initiates a radio link reconfiguration (RL reconfiguration) process with the macro cell and the low power cell.
  • the physical channel reconfiguration process with the user equipment completes the HS-DSCH service cell change, and the radio bearer reconfiguration process with the user equipment (Radio Bearer reconfiguration)
  • the E-DCH serving cell change is completed, so that the HS-DSCH serving cell is changed to a low-power cell, and the E-DCH serving cell is changed to a low-power cell.
  • the RNC initiates an Active Set Update procedure to the user equipment to delete the macro cell from the active set, and the RNC initiates a radio link deletion (RL Deletion) process to the macro cell, and then the RNC sends a control message (Message control) to the user equipment.
  • Intra-frequency measurement reporting criteria in the IE includes the IE of the intra-frequency event identity equal to la and the corresponding report range constant Rla setting. When it is 0, the hysteresis parameter Hla is set to 0 ⁇ 2dB, so that the Eventla measurement report occurs in the Hla/2 hysteresis range of the downlink boundary point or the downlink boundary point toward the macro cell direction, and the soft handover process is completed.
  • the uplink and downlink service connection relationship of the user equipment in moving from the macro cell to the low power cell is as shown in FIG. 12, FIG. 13, FIG. 14 and FIG.
  • the same frequency measurement report in the control information (Message control)
  • the purpose of setting an adjustable A value is to allow the UE to move to the macro cell in the process of moving the low power cell to the macro cell, and the user equipment is allowed to exist in the macro diversity set and the gain area of the uplink as much as possible, thereby bringing a macro diversity set to the uplink capacity.
  • Gain Preferably, the hysteresis parameter Hid is the same as the macro cell parameter, and can be configured to be 1 ⁇ 2dB to avoid the ping-pong effect of the handover.
  • Eventla, Eventld, Eventlb 3 measurement event reports occur when the user equipment moves from the low power cell to the macro cell.
  • the specific step of step 30 includes: Step 311: Receive a measurement event report of the Eventla; Step 312, initiate a radio link establishment to the macro cell, and initiate an activation set update to the user equipment, where The macro cell is added to the active set. Step 313: Initiating radio link reconfiguration to the macro cell and the low power cell, and initiating physical channel reconfiguration and radio bearer reconfiguration to the user equipment. Step 314, receiving the Eventld The measurement event report, the measurement event report is not processed; Step 315, receiving the measurement event report of the Eventlb; Step 316, initiating an activation set update to the user equipment, deleting the low power cell from the activation set And initiating a wireless link deletion to the low power cell to complete the soft handover.
  • the RNC in steps 311, 312, and 313, after the RNC receives the Eventla event measurement report (Measurement Report), the RNC initiates a radio link setup (RL Setup) process to the macro cell, and then the RNC. Initiating an Active Set Update procedure to the user equipment, adding the macro cell to the active set, and the RNC initiates a radio link reconfiguration (RL reconfiguration) process with the macro cell and the low power cell and a physical channel with the user equipment.
  • the physical channel reconfiguration completes the HS-DSCH serving cell change
  • the radio bearer reconfiguration process Radio Bearer reconfiguration
  • E-DCH serving cell change so that the HS-DSCH serving cell is changed to the macro cell.
  • the E-DCH serving cell is changed to a macro cell.
  • the HS-DSCH serving cell of the user is changed to a macro cell, so that the downlink interference from the macro cell occurs when the HS-DSCH serving cell of the handover area user is a low power cell, from the low power cell to the low power cell.
  • the RNC receives an Eventld event measurement report (Measurement).
  • the HS-DSCH/E-DCH serving cell change procedure is no longer initiated (the HS-DSCH/E-DCH serving cell change procedure is completed after the RNC receives the Eventla event).
  • the RNC receives the Eventlb event measurement report (Measurement Report)
  • the RNC initiates an Active Set Update to the user equipment.
  • the low power cell is deleted from the active set, and then the RNC initiates a radio link deletion (RL Deletion) process to the low power cell to complete the soft handover process.
  • the uplink and downlink service connection relationship of the user equipment in moving from the low power cell to the macro cell is as shown in FIG. 16, FIG. 17, FIG.
  • the embodiment of the invention further provides an apparatus for implementing soft handover between cells, comprising: a sending module, configured to send, to a user equipment, control information including at least a plurality of events of the same frequency measurement control and corresponding parameters; receiving module, setting Receiving a measurement event report of the plurality of events reported by the user equipment; and executing, configured to perform a soft handover process according to the multiple measurement event reports.
  • the control information further includes: an independent cell offset parameter of the neighboring low power cell of the macro cell.
  • the device for implementing soft handover between cells is equivalent to a network side device such as a radio network controller RNC.
  • a soft handover procedure is redefined based on the three soft handover event measurement reports, which avoids waste of processing resources of the macro cell of the UMTS heterogeneous network, improves uplink processing performance of the network, and saves The Iub transmission bandwidth of the macro cell is avoided; and the downlink interference from the macro cell due to the adjustment of the independent cell offset parameter is avoided.
  • an inter-cell soft handover method and implementation apparatus provided by an embodiment of the present invention have the following beneficial effects: Redefining a soft handover procedure based on three soft handover event measurement reports, avoiding UMTS heterogeneous networks
  • the processing resources of the macro cell are wasted, the uplink processing performance of the network is improved, the Iub transmission bandwidth of the macro cell is saved, and the downlink interference from the macro cell due to the adjustment of the independent cell offset parameter is avoided.

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Abstract

本发明提供一种小区间软切换方法及实现装置，其中，小区间软切换方法包括：向一用户设备发送至少包括同频测量控制的多个事件及其相应参数的控制信息；接收所述用户设备上报的所述多个事件的测量事件报告；根据所述多个测量事件报告，执行软切换过程。基于3个软切换事件测量报告重新定义一种软切换过程，避免了UMTS异构网络的宏小区的处理资源浪费，提升网络的上行处理性能，节省了宏小区的Iub传输带宽；同时避免了由于独立小区偏置参数调整导致的来自宏小区的下行干扰。

Description

一种小区间软切换方法及实现装置 技术领域 本发明涉及 UMTS网络性能提升领域，特别涉及一种小区间软切换方法及实现装 置。 背景技术
UMTS(Universal Mobile Telecommunications System),即通用移动通信系统。 UMTS 是国际标准化组织 3GPP制定的全球 3G标准之一。 它的主体包括 CDMA接入网络和 分组化的核心网络等一系列技术规范和接口协议。 在实际的 UMTS异构网络部署中， 由于宏小区与低功率小区的下行覆盖边界与上 行覆盖边界不在同一地点（即上行边界与下行边界不相同）， 也就是存在上下行链路不 平衡区。 但是手机上报的软切换过程测量报告是以接收到的下行信号强度大小来触发 上报的， 这样出现上下行链路不平衡区与软切换区存在差异， 参考图 1。 这种差异会导致宏小区接收来自软切换区用户设备 UE的上行信号非常差， 浪费 宏小区的上行资源， 从而影响宏小区的上行处理性能， 参考图 2， 当在宏小区中部署 较多的低功率小区， 将浪费更多上行处理资源， 最终导致宏小区性能下降。 这种差异还会导致宏小区用户对低功率小区上行带来干扰， 为了减少这种干扰， 按照传统的做法可以调整独立小区偏置参数 CIO来让切换区覆盖到不平衡区， 但是这 种差异会导致软切换区用户设备 UE受到来自宏小区的下行干扰， 参考图 3。 发明内容 本发明实施例提供了一种小区间软切换方法及实现装置，避免 UTMS异构网络的 宏小区的处理资源， 提升网络的上行处理性能， 避免了由于独立小区偏置参数调整导 致的来自宏小区的下行干扰。 为了解决上述技术问题， 本发明实施例提供一种小区间软切换方法， 包括： 向一用户设备发送至少包括同频测量控制的多个事件及其相应参数的控制信息； 接收所述用户设备上报的所述多个事件的测量事件报告; 根据所述多个测量事件报告， 执行软切换过程。 优选的， 所述控制信息还包括： 宏小区相邻低功率小区的独立小区偏置参数。 其中， 所述多个事件是通过将同频测量报告中的 IE值设为不同值来设定的， 分别 设为 Eventla, Eventld, Eventlb。 其中， 实现从宏小区到低功率小区切换时， 所述 Eventla事件报告范围常数 Rla 及迟滞参数 Hla的设置与所述宏小区间参数相同； 所述 Eventld事件使用的独立小区 偏置参数 （use CIO) 设置为 TRUE, 迟滞参数 Hid与所述宏小区间参数相同。 优选的， 根据所述多个测量事件报告， 执行软切换过程的具体步骤包括： 接收所述 Eventla的测量事件报告； 向所述低功率小区发起无线链路建立， 并向所述用户设备发起激活集更新， 将所 述低功率小区增加进激活集； 接收所述 Eventld的测量事件报告； 向所述用户设备发送 Eventlb事件及相应的参数； 接收所述 Eventlb的测量事件报告； 向所述宏小区及低功率小区发起无线链路重配， 并向所述用户设备发起物理信道 重配和无线承载重配； 向所述用户设备发起激活集更新， 将所述宏小区从激活集中删除， 并向所述宏小 区发起无线链路删除； 向所述用户设备发送 Eventla事件及相应的参数， 完成软切换。 其中，软切换过程中，向所述用户设备发送的 Eventlb相应的报告范围常数 Rlb=0， 迟滞参数 Hlb=0~2dB， 向所述用户设备发送的 Eventla相应的报告范围常数 Rla=0， 迟滞参数 Hla=0~2dB。 优选的，实现从低功率小区到宏小区切换时，所述 Eventla的报告范围常数 Rla=0， 迟滞参数 Hla=0~2dB; 所述 Eventld事件使用的独立小区偏置参数（use CIO)设置为 TRUE, 迟滞参数 Hid与所述宏小区间参数相同； 所述 Eventlb事件的报告范围常数 Rlb=A+(Rla-Hla/2), 迟滞参数 Hlb=0， 其中 A的大小可调整， Rla和 Hla是宏小区 与宏小区之间的软切换参数。 其中， 根据所述多个测量事件报告， 执行软切换过程的具体步骤包括： 接收所述 Eventla的测量事件报告； 向所述宏小区发起无线链路建立， 并向所述用户设备发起激活集更新， 将所述宏 小区增加进激活集； 向所述宏小区和低功率小区发起无线链路重配， 并向所述用户设备发起物理信道 重配和无线承载重配； 接收所述 Eventld的测量事件报告， 对所述测量事件报告不予以处理； 接收所述 Eventlb的测量事件报告； 向所述用户设备发起激活集更新， 将所述低功率小区从激活集中删除， 并向所述 低功率小区发起无线链路删除， 完成软切换。 本发明实施例还提供一种实现小区间软切换的装置， 包括： 发送模块， 设置为向一用户设备发送至少包括同频测量控制的多个事件及其相应 参数的控制信息； 接收模块， 设置为接收所述用户设备上报的所述多个事件的测量事件报告； 执行模块， 设置为根据所述多个测量事件报告， 执行软切换过程。 其中， 所述控制信息还包括： 宏小区相邻低功率小区的独立小区偏置参数。 本发明实施例的上述技术方案至少具有如下有益效果： 本发明实施例的小区间软切换方法中， 基于 3个软切换事件测量报告重新定义一 种软切换过程， 避免了 UMTS异构网络的宏小区的处理资源浪费， 提升网络的上行处 理性能， 节省了宏小区的 Iub传输带宽； 同时避免了由于独立小区偏置参数调整导致 的来自宏小区的下行干扰。 附图说明 图 1表示 UMTS异构网络的上下行链路不平衡示意图； 图 2表示 E-DCH服务小区为低功率小区的软切换区用户设备与宏小区和低功率小 区之间的上下行信道示意图； 图 3表示软切换区用户设备受到来自宏小区下行信号的干扰示意图； 图 4表示用户设备从宏小区向低功率小区移动过程中的软切换事件及软切换区域 示意图； 图 5表示用户设备从低功率小区向宏小区移动过程中的软切换事件及软切换区域 示意图； 图 6表示用户设备从宏小区向低功率小区移动过程中的 Eventla软切换事件处理 流程图； 图 7表示用户设备从宏小区向低功率小区移动过程中的 Eventld软切换事件处理 流程图； 图 8表示用户设备从宏小区向低功率小区移动过程中的 Eventlb软切换事件处理 流程图； 图 9表示用户设备从低功率小区向宏小区移动过程中的 Eventla软切换事件处理 流程图； 图 10表示用户设备从低功率小区向宏小区移动过程中的 Eventld软切换事件处理 流程图； 图 11表示用户设备从低功率小区向宏小区移动过程中的 Eventlb软切换事件处理 流程图； 图 12 表示用户设备从宏小区向低功率小区移动过程中服务小区为宏小区时上下 行业务连接关系示意图； 图 13 表示用户设备从宏小区向低功率小区移动过程中在不平衡区时上下行业务 连接关系示意图； 图 14 表示用户设备从宏小区向低功率. 区移动过程中在软切换区时上下行业务 连接关系示意图； 图 15 表示用户设备从宏小区向低功率. 区移动过程中服务小区为低功率小区时 上下行业务连接关系示意图； 图 16 表示用户设备从低功率小区向宏. 区移动过程中服务小区为低功率小区时 上下行业务连接关系示意图； 图 17 表示用户设备从低功率小区向宏. 区移动过程中在软切换区时上下行业务 连接关系示意图； 图 18 表示用户设备从低功率小区向宏. 区移动过程中在不平衡区时上下行业务 连接关系示意图； 图 19 表示用户设备从低功率小区向宏小区移动过程中服务小区为宏小区时上下 行业务连接关系示意图； 图 20表示本发明实施例的小区间软切换方法的基本步骤流程图。 具体实施方式 为使本发明实施例要解决的技术问题、 技术方案和优点更加清楚， 下面将结合附 图及具体实施例进行详细描述。 本发明实施例针对现有技术中宏小区的上行资源被浪费导致的宏小区性能下降的 问题， 提供一种小区间软切换方法及装置， 基于 3个软切换事件测量报告重新定义一 种软切换过程， 避免了 UMTS异构网络的宏小区的处理资源浪费， 提升网络的上行处 理性能， 节省了宏小区的 Iub传输带宽； 同时避免了由于低功率小区的独立小区偏置 参数调整导致的来自宏小区的下行干扰。 如图 20所示， 本发明实施例提供一种小区间软切换方法， 包括： 步骤 10， 向一用户设备发送至少包括同频测量控制的多个事件及其相应参数的控 制信息； 步骤 20， 接收所述用户设备上报的所述多个事件的测量事件报告； 步骤 30， 根据所述多个测量事件报告， 执行软切换过程。 本发明的上述实施例中， 向用户设备发送的同频测量控制中包含多个事件的配置 信息， 然后根据用户设备上报的多个事件的测量报告完成增加链路、 激活集更新、 删 除链路， 链路替换、 服务小区变化操作， 实现软切换过程， 避免 UMTS异构网络的宏 小区的处理资源浪费， 提升网络的上行处理性能。 其中， 本发明上述实施例中所述控制信息还包括： 宏小区邻区的独立小区偏置参 数。 本发明实施例中， 独立小区偏置参数 CIO的设置可以让切换区覆盖到不平衡区， 但也会导致软切换区用户设备受到来自宏小区的下行干扰； 为了避免这种干扰， 本发 明实施例中当用户设备从宏小区向低功率小区移动过程中， 设置宏小区相邻低功率小 区的独立小区偏置参数 CIO=DU-(Rla-Hla/2) dB,其中 DU为不平衡区的大小， 其取值 范围为 4~7dB， 根据实际的 UMTS异构网络中宏小区与低功率小区的发射功率差异以 及接收灵敏度差异来决定， 不限于一固定值。一般来讲 Rla-Hla/2 <DU(dB), 比如当不 平衡区大小 DU为 6dB， 这样 CIO=6-(Rla-Hla/2;)。 常规 Eventla的测量报告参数， Rla=3dB, Hla=0dB, 贝 iJ CIO为 3 dB。 本发明实施例中当用户设备从低功率小区向宏小区移动过程中， 设置低功率小区 相邻宏小区的独立小区偏置参数 CIO为 0 dB。 本发明的上述实施例中，所述多个事件是通过将同频测量报告中的 IE值设为不同 值来设定的， 分别设 Eventla, Eventld, Eventlb测量事件。 本发明实施例中通过 Eventla, Eventld, Eventlb, 3个测量事件报告完成软切换 过程， 节省宏小区 Iub传输带宽， 避免 UMTS异构网络的宏小区的处理资源浪费， 提 升网络的上行处理性能。 优选的， 本发明上述实施例中， 实现从宏小区到低功率小区切换时， 所述 Eventla 事件报告范围常数 Rla及迟滞参数 Hla的设置与所述宏小区间参数相同；所述 Eventld 事件使用 CIO参数 （use CIO) 设置为 TRUE, 迟滞参数 Hid与所述宏小区间参数相 同。 本发明上述实施例中， 如图 4所示， 用户设备从宏小区移动到低功率小区过程中 发生 Eventla, Eventld, Eventlb3个测量事件报告。优选的，步骤 30的具体步骤包括： 步骤 301， 接收所述 Eventla的测量事件报告； 步骤 302， 向所述低功率小区发起无线链路建立， 并向所述用户设备发起激活集 更新， 将所述低功率小区增加进激活集； 步骤 303， 接收所述 Eventld的测量事件报告； 步骤 304， 向所述用户设备发送 Eventlb事件及相应的参数； 步骤 305， 接收所述 Eventlb的测量事件报告； 步骤 306， 向所述宏小区及低功率小区发起无线链路重配， 并向所述用户设备发 起物理信道重配和无线承载重配； 步骤 307， 向所述用户设备发起激活集更新， 将所述宏小区从激活集中删除， 并 向所述宏小区发起无线链路删除； 步骤 308， 向所述用户设备发送 Eventla事件及相应的参数， 完成软切换。 本发明实施例中， 如图 6所示， 步骤 301及步骤 302中， 无线网络控制器 RNC 接收到 Eventla事件测量报告 （Measurement Report) 后， RNC向低功率小区发起无 线链路建立 (RL Setup)过程，然后 RNC向用户设备发起激活集更新 (Active Set Update) 过程， 把低功率小区增加进激活集中。 如图 7 所示， 步骤 303 及步骤 304 中， RNC 接收到 Eventld 事件测量报告
(Measurement Report) 后， 不发起 HS-DSCH/E-DCH服务小区变更过程,在 Eventld 事件后该用户设备的 HS-DSCH 服务小区依然是宏小区， 这样就避免切换区用户的 HS-DSCH服务小区变更为低功率小区而受到来自宏小区的下行干扰发生， RNC 向用 户设备发送控制信息 （Message control ) , Message control 消息中的同频测量报告 ( Intra-frequency measurement reporting criteria ) IE 中包括同步] ¾测量角虫发事件 (Intra-frequency event identity)等于 lb的 IE以及相应的报告范围常数 Rib设置为 0， 迟滞参数 Hlb设置为 0〜2dB，使得 Eventlb测量报告在下行边界点或下行边界点朝低 功率小区方向的 Hlb/2迟滞范围发生, Rib设置为 0相对于传统 Rib设置为大于 0情况 就是提前把宏小区从激活集中删除， 宏小区就可以减少无线链路的处理负载， 节省宏 小区上行处理资源， 从而提升上行处理性能， 也节省了宏小区的 Iub传输带宽。 如图 8所示， 步骤 305、 306、 307及 308中， RNC接收到 Eventlb事件测量报告 (Measurement Report) 后， RNC通过与宏小区及低功率小区发起无线链路重配 （RL reconfiguration ) 过程以及与用户设备之间物理信道重配过程 (Physical Channel reconfiguration)完成 HS-DSCH 服务小区变更， 与用户设备之间无线承载重配过程 (Radio Bearer reconfiguration) 完成 E-DCH服务小区变更， 使得 HS-DSCH服务小 区变更为低功率小区， E-DCH服务小区变更为低功率小区。 RNC 向用户设备发起激 活集更新 （Active Set Update) 过程把宏小区从激活集中删除， RNC向宏小区发起无 线链路删除 （RL Deletion) 过程， 然后 RNC 向用户设备发送控制信息 （Message control )，控制信息 (Message control )中的同步 ]¾测量报告 (Intra-frequency measurement reporting criteria) IE中包括同频测量角虫发事件 (Intra-frequency event identity) 等于 la 的 IE以及相应的报告范围常数 Rla设置为 0， 迟滞参数 Hla设置为 0〜2dB， 使得 Eventla测量报告在下行边界点或下行边界点朝宏小区方向的 Hla/2迟滞范围发生，完 成软切换过程。 其中， 本发明实施例中， 用户设备从宏小区向低功率小区移动时， 软切换过程中， 向所述用户设备发送的 Eventlb相应的报告范围常数 Rlb=0， 迟滞参数 Hlb=0~2dB， 向所述用户设备发送的 Eventla相应的报告范围常数 Rla=0， 迟滞参数 Hla=0~2dB。 本发明实施例中， 用户设备从宏小区向低功率小区移动过程中的上下行业务连接 关系如图 12、 图 13、 图 14及图 15所示。 本发明另一实施例中， 实现从低功率小区到宏小区切换时， 所述 Eventla的报告 范围常数 Rla=0，迟滞参数 Hla=0~2dB;所述 Eventld事件使用独立小区偏置参数（use CIO) 设置为 TRUE, 迟滞参数 Hid与所述宏小区间参数相同； 所述 Eventlb事件报 告范围常数 Rlb=A+(Rla-Hla/2)，迟滞参数 Hlb=0，其中 A的大小可调整， Rla和 Hla 是宏小区与宏小区之间的软切换参数。 本发明上述实施例中， 控制信息 （Message control ) 中的同频测量报告
( Intra-frequency measurement reporting criteria ) IE 中包括同步] ¾测量角虫发事件 (Intra-frequency event identity)等于 lb的 IE， 相应的 lb事件的报告范围常数 Rib及 lb事件的迟滞参数 Hlb设置满足： Rlb+Hlb/2= A+(Rla-Hla/2),其中 Rla和 Hla参数 是宏小区间的软切换参数， A 的取值范围为 0~6。 例如当 A 取值 3 时， Rlb+Hlb/2=3+(Rla-Hla/2), 其中 Rlb=3+(Rla-Hla/2)， Hlb=0 (dB)。 设置一个可以调整的 A值的目的是让 UE在低功率小区移动到宏小区过程中， 有 机会让用户设备尽量存在于上行链路的宏分集合并增益区中， 给上行容量带来宏分集 合并增益。 优选的， 迟滞参数 Hid与所述宏小区间参数相同， 可配置为 l~2dB， 以避免切换 的乒乓效应。 本发明上述实施例中， 如图 5所示， 用户设备从低功率小区移动到宏小区过程中 发生 Eventla, Eventld, Eventlb3个测量事件报告。优选的，步骤 30的具体步骤包括： 步骤 311， 接收所述 Eventla的测量事件报告； 步骤 312， 向所述宏小区发起无线链路建立， 并向所述用户设备发起激活集更新， 将所述宏小区增加进激活集； 步骤 313， 向所述宏小区和低功率小区发起无线链路重配， 并向所述用户设备发 起物理信道重配和无线承载重配； 步骤 314， 接收所述 Eventld的测量事件报告， 对所述测量事件报告不予以处理； 步骤 315， 接收所述 Eventlb的测量事件报告； 步骤 316， 向所述用户设备发起激活集更新， 将所述低功率小区从激活集中删除， 并向所述低功率小区发起无线链路删除， 完成软切换。 本发明实施例中， 如图 9所示， 步骤 311、 312及 313中， RNC接收到 Eventla事 件测量报告 （Measurement Report) 后， RNC向宏小区发起无线链路建立 （RL Setup) 过程， 然后 RNC向用户设备发起激活集更新 （Active Set Update) 过程， 把宏小区增 加进激活集中， RNC 通过与宏小区及低功率小区发起无线链路重配 （RL reconfiguration ) 过程以及与用户设备之间物理信道重配过程 (Physical Channel reconfiguration)完成 HS-DSCH 服务小区变更， 与用户设备之间无线承载重配过程 (Radio Bearer reconfiguration) 完成 E-DCH服务小区变更， 使得 HS-DSCH服务小 区变更为宏小区， E-DCH 服务小区变更为宏小区。 在 Eventla 事件后该用户的 HS-DSCH服务小区变更为宏小区， 这样就避免切换区用户的 HS-DSCH服务小区是低 功率小区情况下而受到来自宏小区的下行干扰发生， 从低功率小区到宏小区切换时， 所述 Eventla的参数中 Rla=0设置相对于传统 Rla大于 0可以推迟把宏小区增加为激 活集， 宏小区就可以减少无线链路的处理负载,节省宏小区上行处理资源,从而提升上 行处理性能,也节省了宏小区的 Iub传输带宽。 如图 10所示， 步骤 314中， RNC接收到 Eventld 事件测量报告 （Measurement
Report) 后， 不再发起 HS-DSCH/E-DCH服务小区变更过程 （RNC接收到 Eventla事 件后已经完成 HS-DSCH/E-DCH服务小区变更过程）。 如图 11 所示， 步骤 315 及步骤 316 中， RNC 接收到 Eventlb 事件测量报告 (Measurement Report) 后， RNC向用户设备发起激活集更新 （Active Set Update) 过 程， 把低功率小区从激活集中删除， 然后 RNC 向低功率小区发起无线链路删除 （RL Deletion) 过程， 完成软切换过程。 本发明实施例中， 用户设备从低功率小区向宏小区移动过程中的上下行业务连接 关系如图 16、 图 17、 图 18及图 19所示。 本发明实施例还提供一种实现小区间软切换的装置， 包括： 发送模块， 设置为向一用户设备发送至少包括同频测量控制的多个事件及其相应 参数的控制信息； 接收模块， 设置为接收所述用户设备上报的所述多个事件的测量事件报告； 执行模块， 设置为根据所述多个测量事件报告， 执行软切换过程。 其中， 所述控制信息还包括： 宏小区相邻低功率小区的独立小区偏置参数。 本发明上述实施例中，实现小区间软切换的装置相当于无线网络控制器 RNC等网 络侧设备。 本发明实施例的小区间软切换方法中， 基于 3个软切换事件测量报告重新 定义一种软切换过程， 避免了 UMTS异构网络的宏小区的处理资源浪费， 提升网络的 上行处理性能， 节省了宏小区的 Iub传输带宽； 同时避免了由于独立小区偏置参数调 整导致的来自宏小区的下行干扰。 以上所述是本发明的优选实施方式， 应当指出， 对于本技术领域的普通技术人员 来说， 在不脱离本发明所述原理的前提下， 还可以做出若干改进和润饰， 这些改进和 润饰也应视为本发明的保护范围。 工业实用性 如上所述， 本发明实施例提供的一种小区间软切换方法及实现装置具有以下 有益效果： 基于 3个软切换事件测量报告重新定义一种软切换过程， 避免了 UMTS 异构网络的宏小区的处理资源浪费，提升网络的上行处理性能，节省了宏小区的 Iub 传输带宽； 同时避免了由于独立小区偏置参数调整导致的来自宏小区的下行干扰。

Claims

权 利 要 求 书
1. 一种小区间软切换方法， 包括： 向一用户设备发送至少包括同频测量控制的多个事件及其相应参数的控制 信息；
接收所述用户设备上报的所述多个事件的测量事件报告； 根据所述多个测量事件报告， 执行软切换过程。
2. 根据权利要求 1所述的小区间软切换方法， 其中， 所述控制信息还包括： 宏小 区相邻低功率小区的独立小区偏置参数。
3. 根据权利要求 1所述的小区间软切换方法， 其中， 所述多个事件是通过将同频 测量报告中的 IE值设为不同值来设定的，分别设为 Eventla, Eventld, Eventlb。
4. 根据权利要求 3所述的小区间软切换方法， 其中， 实现从宏小区到低功率小区 切换时， 所述 Eventla事件报告范围常数 Rla及迟滞参数 Hla的设置与所述宏 小区间参数相同； 所述 Eventld事件使用独立小区偏置参数 Use CIO 设置为 TRUE, 迟滞参数 Hid与所述宏小区间参数相同。
5. 根据权利要求 4所述的小区间软切换方法，其中，根据所述多个测量事件报告， 执行软切换过程的具体步骤包括：
接收所述 Eventla的测量事件报告； 向所述低功率小区发起无线链路建立，并向所述用户设备发起激活集更新， 将所述低功率小区增加进激活集；
接收所述 Eventld的测量事件报告；
向所述用户设备发送 Eventlb事件及相应的参数；
接收所述 Eventlb的测量事件报告； 向所述宏小区及低功率小区发起无线链路重配， 并向所述用户设备发起物 理信道重配和无线承载重配；
向所述用户设备发起激活集更新， 将所述宏小区从激活集中删除， 并向所 述宏小区发起无线链路删除；
向所述用户设备发送 Eventla事件及相应的参数， 完成软切换。
6. 根据权利要求 5所述的小区间软切换方法， 其中， 软切换过程中， 向所述用户 设备发送的 Eventlb相应的报告范围常数 Rlb=0， 迟滞参数 Hlb=0~2dB， 向所 述用户设备发送的 Eventla相应的报告范围常数 Rla=0，迟滞参数 Hla=0~2dB。
7. 根据权利要求 3所述的小区间软切换方法， 其中， 实现从低功率小区到宏小区 切换时， 所述 Eventla 的报告范围常数 Rla=0， 迟滞参数 Hla=0~2dB; 所述 Eventld事件使用独立小区偏置参数 Use CIO设置为 TRUE, 迟滞参数 Hid与 所述宏小区间参数相同； 所述 Eventlb事件报告范围常数 Rlb=A+(Rla-Hla/2)， 迟滞参数 Hlb=0， 其中 A的大小可调整， Rla和 Hla是宏小区与宏小区之间的 软切换参数。
8. 根据权利要求 7所述的小区间软切换方法，其中，根据所述多个测量事件报告， 执行软切换过程的具体步骤包括：
接收所述 Eventla的测量事件报告； 向所述宏小区发起无线链路建立， 并向所述用户设备发起激活集更新， 将 所述宏小区增加进激活集； 向所述宏小区和低功率小区发起无线链路重配， 并向所述用户设备发起物 理信道重配和无线承载重配；
接收所述 Eventld的测量事件报告， 对所述测量事件报告不予以处理； 接收所述 Eventlb的测量事件报告； 向所述用户设备发起激活集更新， 将所述低功率小区从激活集中删除， 并 向所述低功率小区发起无线链路删除， 完成软切换。
9. 一种实现小区间软切换的装置， 包括：
发送模块， 设置为向一用户设备发送至少包括同频测量控制的多个事件及 其相应参数的控制信息；
接收模块，设置为接收所述用户设备上报的所述多个事件的测量事件报告; 执行模块， 设置为根据所述多个测量事件报告， 执行软切换过程。
10. 根据权利要求 9所述的实现小区间软切换的装置，其中，所述控制信息还包括: 宏小区相邻低功率小区的独立小区偏置参数。
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