WO2012062105A1 - 一种测量结果过滤方法、装置及终端 - Google Patents

一种测量结果过滤方法、装置及终端 Download PDF

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WO2012062105A1
WO2012062105A1 PCT/CN2011/075275 CN2011075275W WO2012062105A1 WO 2012062105 A1 WO2012062105 A1 WO 2012062105A1 CN 2011075275 W CN2011075275 W CN 2011075275W WO 2012062105 A1 WO2012062105 A1 WO 2012062105A1
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scaling factor
terminal
filtering
measurement result
factor
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PCT/CN2011/075275
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English (en)
French (fr)
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陈中明
张文忠
杜忠达
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中兴通讯股份有限公司
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Publication of WO2012062105A1 publication Critical patent/WO2012062105A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of digital mobile communication technologies, and mainly relates to a method, a device and a terminal for filtering measurement results.
  • cell reselection and handover are important functions.
  • the terminal In order to successfully implement cell reselection, the terminal (UE) needs to measure the signal quality of different cells in order to select a suitable cell for camping. After the UE establishes a connection with the network in a certain cell, the UE still needs to measure the signal quality of its neighboring cell, so as to select a suitable cell for handover to meet the mobility requirement.
  • the specific process of the measurement is: the network side sends a measurement control message (that is, a RRC (Radio Resource Control) reconfiguration message) to the UE, where the measurement control message includes the measurement identifier and the measurement. Object, report configuration, and other related properties of the measurement.
  • a measurement control message that is, a RRC (Radio Resource Control) reconfiguration message
  • the UE performs measurement according to the measurement object and the report configuration in the measurement control message, and generates a measurement report according to the measurement result and reports it to the network side.
  • the measurement identifier is used as the index of the entire measurement configuration. It contains two sub-identities, the measurement object identifier and the report configuration identifier. Each sub-identifier contains its own related attributes. For example, the measurement object sub-ID contains the measurement object attributes (such as carrier frequency, neighbor).
  • the list configuration sub-identification includes the report configuration attributes (such as event trigger or periodic report, triggered event definition (Al, A2%), trigger time (Time To Trigger, TTT), number of reports, etc.).
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • the UE measures RSRP or RSRQ.
  • the measurement result of the measurement object (the result of layer 3 filtering) is evaluated and the access conditions of the event are met (for example, the signal quality of the neighboring area is better than the threshold), and the duration is equal to or greater than TTT It is considered to be the measurement object that satisfies the event trigger condition.
  • the measurement report is reported to the network side, and the measurement object in the report report is sorted according to the measurement quantity set by the network, and the optimal one is in front.
  • the measurement result of the above measurement evaluation is to perform layer 3 filtering on the measurement result of the physical layer, that is, according to the following formula:
  • F n (l - a) - F n _ l + a - M n Equation 1
  • M n the latest measurement results of the physical layer
  • F n-1 the last (i.e. (n-1) times) through a layer three filtration measurement evaluation measurement
  • the measurement result of the layer three filtering that is, the measurement result of the (n-1)th layer three-filtering includes the (n-2)th layer-by-layer three-filtering measurement result)
  • the ratio of the latest measurement results, k is smaller, indicating that the proportion of historical measurement results is smaller.
  • the filtering mentioned in this article is specified as a layer 3 filter.
  • the current protocol also specifies three mobile states of the UE, normal, medium, and high speed. In actual applications, it is found that the speed of reporting the measurement report will be slower for the medium-speed and high-speed UEs, and the handover at the cell edge will be delayed. In severe cases, the call will be dropped.
  • the technical problem to be solved by the present invention is to provide a measurement result filtering method, device and terminal, which can accelerate the reporting of medium-speed and high-speed UE measurement results.
  • the present invention provides a measurement result filtering method, including: a terminal acquires a filtering factor from a network side, the terminal selects a scaling factor according to a running speed thereof, and the terminal according to the filtering factor and the selected scaling The factor filters the measurement results.
  • the scaling factor is: a radio resource control protocol (RRC) sent by the terminal from the network side.
  • RRC radio resource control protocol
  • the scaling factor comprises: a first scaling factor of the terminal at an abnormal speed; or a second scaling factor at a medium speed, or a third scaling factor at a high speed.
  • the step of the terminal selecting a scaling factor according to its own running speed includes: when the terminal determines that it is at a medium speed, selecting the first scaling factor, or selecting the second scaling factor; At high speed, the first scaling factor is selected, or the third scaling factor is selected.
  • F n is the measurement result of the nth pass layer three filter
  • Mn is the nth measurement result of the physical layer, which is the measurement result of the n-1th pass layer three filter
  • a and a' are Filter the parameters
  • k is the filter factor
  • b is the zoom factor
  • F n is the measurement result of the nth pass layer three filter
  • M n is the nth measurement result of the physical layer
  • F n-1 It is the measurement result of the n-1th pass layer three filter
  • the a is the filter parameter
  • "' 4 and a' is less than or equal to 1
  • b is the scaling factor
  • k is the filter factor
  • the method further includes: evaluating the filtering result, and generating a measurement report to the network side.
  • the present invention further provides a measurement result filtering apparatus, including: a receiving module configured to acquire a filtering factor from a network side; a selection module configured to select a scaling factor according to a terminal operating speed; a filtering module, It is arranged to filter the measurement result of the terminal according to the filtering factor and the selected scaling factor.
  • the scaling factor includes: a first scaling factor of the terminal at an abnormal speed; or a second scaling factor when the terminal is at a medium speed and a third scaling factor when the terminal is at a high speed;
  • the selecting module is configured to: when the terminal is determined to be at a medium speed, select the first scaling factor, or select the second scaling factor; and determine that the terminal is at a high speed, select the first scaling factor, or select a
  • the third scaling factor is described.
  • the filtering module is configured to filter the measurement result of the terminal according to the following formula: +" ⁇ ⁇ « , wherein F n is the measurement result of the ⁇ th pass layer three filter, and ⁇ ⁇ is the physical layer
  • the measurement result of the nth time is the measurement result of the n-1th pass layer three filter
  • the a is a filter parameter
  • a - ⁇
  • b is a scaling factor
  • k is a filter factor
  • the terminal is according to the following formula
  • k is the filter factor
  • the present invention also provides a terminal including the above-described measurement result filtering device.
  • the medium-speed and high-speed UE measurement results can be reported and switched to avoid dropped calls.
  • FIG. 1 is a flow chart of an embodiment of a method for filtering measurement results according to the present invention
  • FIG. 2 is a schematic diagram of an embodiment of a method for filtering measurement results according to the present invention.
  • the filtering of layer three is the same, that is, the same k is used.
  • k is set for normal speed.
  • the filter is still filtered according to the normal speed k value, a measurement report will appear. The report is slowed down, and the delay is switched at the edge of the cell, or the call is dropped.
  • the k in the above formula 1 is amplified or reduced according to the running speed of the UE, so that for the medium-speed and high-speed UE, the reference to the historical measurement result can be relatively reduced, so as to speed up the reporting and switching of the measurement report. Avoid falling out.
  • Step 101 The terminal acquires a filtering factor from the network side.
  • Step 102 The terminal selects a scaling factor according to a running speed of the network.
  • Step 103 The terminal filters the measurement result according to the filtering factor and the selected scaling factor.
  • the terminal After the measurement result is filtered to generate the filtering result, the terminal evaluates the filtering result, and generates a measurement report and reports it to the network side.
  • the scaling factor may be: obtained by the terminal from a radio resource control protocol (RRC) reconfiguration message sent by the network side; or: obtained by the terminal from a system message sent by the network side; or: pre-configured to the terminal.
  • the scaling factor includes: a first scaling factor at an abnormal speed, or a second scaling factor at a medium speed and a third scaling factor at a high speed.
  • the default scaling factor at normal speed is 1 or it can be understood as no scaling factor, which can be filtered according to Equation 2 or Equation 3 below, or filtered according to Equation 1.
  • the step of the terminal selecting a scaling factor according to its own running speed includes:
  • the terminal determines the number of times of cell reselection in a unit time. If the threshold is higher than the second threshold, the terminal determines that it is at a medium speed, selects a first scaling factor when the abnormal speed is selected, or selects a second scaling factor when the medium speed is used; If the number of times of cell reselection is higher than the second threshold, the terminal determines that it is at a high speed, selects a first scaling factor when the abnormal speed is selected, or selects a third scaling factor when the speed is high.
  • the terminal When the terminal is in the connected state, if the terminal determines that the number of cell handovers in a unit time is higher than the first threshold is lower than the second threshold, the terminal determines that it is at a medium speed, and selects the first time when the abnormal speed is selected. a scaling factor, or a second scaling factor when the medium speed is selected; if the terminal determines that the number of times of cell switching in the unit time is higher than the second threshold, the terminal determines that it is at a high speed, and selects the first time of the abnormal speed.
  • terminal normal speed, medium speed, and high speed refer to the 3GPP TS 36.304 protocol.
  • the terminal compares the number of times of cell reselection, and compares the control parameters of the network configuration according to a certain rule, and then determines the moving speed of the terminal.
  • Other means such as GPS, or the frequency of location updates, etc., can also be used to determine the speed of movement.
  • the moving speed of terminals in LTE is divided into three types: high speed, medium speed and normal.
  • the network side notifies the terminal of the control parameters through system message broadcast, including T CRMAX (the time range for calculating the number of cell reselections), NCI ⁇ M and N CR I (the maximum number of cell reselections), T CRMAXHYST (the terminal leaves the abnormal speed) a time range before the state).
  • the terminal will determine its own mobile state according to these parameters. For example, if the number of cell reselection by the terminal exceeds NCI ⁇ M but does not exceed NCR-H within the T CRMAX time range, it is considered to enter the medium speed state, at T CRMAX If the number of cell reselection by the terminal exceeds N CR I in the time range, it is considered to enter the high speed state.
  • the normal state can be restored.
  • the above statistical process is also applicable, but the statistics are the number of handovers.
  • the step of filtering the measurement result by the terminal according to the filtering factor and the selected scaling factor includes:
  • the terminal performs filtering according to the following formula:
  • F n (l - a) - F n _ x + a - M n Equation 2
  • the terminal performs filtering according to the following formula:
  • k is the filter factor
  • Equation 3 The above b can be expressed as a percentage. If b is set to 25%, "bk” in Formula 2 is 25% of "k” in Formula 1; if b is set to 125%, then a' in Equation 3 is to be enlarged. To 125% of a in Equation 1.
  • the triggering event of the measurement task in the embodiment may be the measurement events defined in the current and subsequent LTE, such as A3, A5, Bl, B2, and is not limited to the measurement events such as A4 involved in the embodiment.
  • UE1, UE2, and UE3 are all in a connected state, and the carrier frequency of the current serving cell is fl, and the network side separately sends measurement control messages to UE1, UE2, and UE3, where the measurement control message includes one Measurement task:
  • the measurement identifier is 1
  • the measurement object is the cell on the fl
  • the report is configured as event A4 trigger (the neighboring cell signal quality is better than the specified threshold, that is, the signal quality of the neighboring cell after layer 3 filtering is better than the specified threshold.
  • the UE is simultaneously notified to scale the a of the formula 1 in the layer three filtering according to the running speed of the UE, that is, the filtering is performed by using the formula 3, the scaling factor is set to 125% for the medium speed UE, and the scaling factor is set to 150% for the high speed UE. .
  • UE1 is at normal speed, and UE1 starts measuring the measurement task with measurement identifier 1 at point P1 and evaluates the measurement result.
  • PI, P2, P3, P4, P5, P6, P7 physical layer reporting
  • the measurement result is sent to the upper layer, and UE1 performs layering on the measurement result of the physical layer according to formula 3.
  • UE2 is at medium speed (assuming speed is twice the normal speed), and UE2 starts measuring the measurement task with measurement identifier 1 at point P1 and evaluates the measurement result.
  • PI, P3, P5, P7 The physical layer reports the measurement result to the upper layer.
  • UE3 is at a high speed (assuming that the speed is 3 times the normal speed), UE3 starts measuring the measurement task with measurement index 1 at point P1 and evaluates the measurement result.
  • PI, P4, P7 physical layer
  • ' a*150%, at the point P4, it is found that the neighboring cell satisfies the trigger condition of event A4, reports the measurement report to the network side, and the network side decides to switch UE3 to the neighboring cell according to the measurement report.
  • speed amplification is not performed on a, then according to formula 1, the neighboring cell at point P4 cannot satisfy the trigger condition of event A4, and it is necessary to trigger the measurement report to point P7.
  • the above scaling factor may also be specified in the protocol, or broadcasted to the terminal through a system message. After the terminal selects an appropriate scaling factor according to its own speed, the filtering of the measurement result is the same as the above process, and the description will not be repeated.
  • the background is the same as that in the first embodiment.
  • the network side notifies the UE according to the running speed of the UE.
  • Degrees are scaled by k in the layer three filter, set to 75% for the medium speed UE scaling factor and 50% for the high speed UE scaling factor.
  • UE1 is at normal speed, UE1 starts measuring the measurement task with measurement identifier 1 at point P1 and evaluates the measurement result.
  • PI, P2, P3, P4, P5, P6, P7 physical layer reporting
  • the measurement result is sent to the upper layer.
  • UE2 is at medium speed (assuming that the speed is twice the normal speed), and UE2 starts the measurement of the measurement task with the measurement identifier of 1 at the point P1 and evaluates the measurement result.
  • PI, P3, P5, P7 The physical layer reports the measurement result to the upper layer.
  • the UE2 performs layer 3 filtering on the measurement result of the physical layer according to the formula 2, which is equivalent to reducing the speed of k in the formula 1 to k*75%, and finding the adjacent cell to satisfy the event at the P5 point.
  • the trigger condition of A4 reports the measurement report to the network side, and the network side decides to switch UE2 to the neighboring cell according to the measurement report. In the above, if the speed is not reduced, then according to the formula 1, the neighboring cell at the P5 point cannot satisfy the trigger condition of the event A4, and the measurement report needs to be triggered to the P7 point.
  • UE3 is at a high speed (assuming that the speed is 3 times the normal speed), UE3 starts measuring the measurement task with measurement index 1 at point P1 and evaluates the measurement result.
  • PI, P4, P7 physical layer
  • the measurement result is reported to the upper layer, and UE3 performs layer 3 filtering on the measurement result of the physical layer according to formula 2, which is equivalent to reducing the speed of k in formula 1 to k*50%, and finding that the neighboring cell satisfies the trigger of event A4 at point P4.
  • the condition reports the measurement report to the network side, and the network side decides to switch the UE3 to the neighboring cell according to the measurement report.
  • the speed reduction is not performed for k, then according to formula 1, the neighboring cell at point P4 cannot satisfy the trigger condition of event A4, and it is necessary to trigger the measurement report to point P7.
  • the device for implementing the foregoing method includes: a receiving module, a selecting module, and a filtering module, where: a receiving module, configured to obtain a filtering factor from a network side; a selection module, configured to select a scaling factor according to a terminal operating speed; a filtering module, configured to filter the measurement result of the terminal according to the filtering factor and the selected scaling factor.
  • the scaling factor includes: a first scaling factor at an abnormal speed; or a second scaling factor at a medium speed and a third scaling factor at a high speed; the selection module, configured to determine when the terminal is at a medium speed, select The first scaling factor at the abnormal speed, or the second scaling factor when the medium speed is selected; and the first scaling factor when the abnormal speed is selected when the terminal is at a high speed, or the third scaling factor when the high speed is selected.
  • the invention provides a method, a device and a terminal for filtering measurement results, which can accelerate the reporting of medium-speed and high-speed UE measurement results.
  • the terminal obtains a filtering factor from the network side, and the terminal selects a scaling factor according to the running speed of the terminal, and the terminal filters the measurement result according to the filtering factor and the selected scaling factor to solve the technical problem.
  • the medium-speed and high-speed UE measurement results can be reported and switched to avoid dropped calls.

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Description

一种测量结果过滤方法、 装置及终端
技术领域
本发明涉及数字移动通信技术领域, 主要涉及一种测量结果过滤方法、 装置及终端。
背景技术
在蜂窝移动通信系统中, 小区重选和切换是及其重要的功能。 为了顺利 实现小区重选, 终端(UE )需要对不同小区的信号质量进行测量, 以便选择 合适的小区进行驻留。 当 UE在某个小区与网络建立连接之后, UE仍然需要 对其相邻小区的信号质量进行测量, 以便选择合适的小区进行切换, 满足移 动性要求。
在连接态下,测量的具体过程是:网络侧将测量控制消息(即 RRC( Radio Resource Control, 无线资源控制协议)重配消息)发送给 UE, 其中, 该测量 控制消息中包括测量标识、 测量对象、 告配置以及测量的其他相关属性。
UE根据测量控制消息中的测量对象、报告配置去执行测量, 并根据测量结果 生成测量报告上报给网络侧。
测量标识作为整个测量配置的索引, 包含了两个子标识, 测量对象标识 和报告配置标识, 每个子标识又包含了各自的相关属性, 如测量对象子标识 包含了测量对象属性(如载频, 邻区列表等) , 报告配置子标识包含了报告 配置属性(如事件触发或周期上报, 触发的事件定义(Al、 A2... ) , 触发时 间 ( Time To Trigger, TTT ) , 上报次数等) 。
测量控制信息中还有其他与测量对象和 告配置无关的配置, 如 RSRP ( Reference Signal Received Power, 单位为 dBm )和 RSRQ ( Reference Signal Received Quality, 单位为 dB ) 的过滤因子 k。 该过滤因子针对每个无线接入 技术单独配置。
对测量对象(最终都对应为小区) 的测量, 不同的系统釆用不同的测量 方法, 由网络侧来设定, 称为测量量 ( measurement quantity ) , 用来反映小 区的信号质量。 比如在 LTE中, UE测量的是 RSRP或 RSRQ。
对于事件触发的测量任务, 当测量对象的测量结果(层三过滤后的结果) 进行评估后满足事件的准入条件(比如邻区信号质量优于门限) , 并且持续 时间等于或大于 TTT时才被认为是满足事件触发条件的测量对象。 当有测量 对象满足事件的触发条件后, 上报测量报告给网络侧, 上报报告中的测量对 象是根据网络设定的测量量来排序的, 最优的在前面。
上述进行测量评估的测量结果是对物理层的测量结果进行层三过滤后 的, 即按照如下公式进行过滤:
Fn = (l - a) - Fn_l + a -Mn 公式 1 其中, ?是最新的经过层三过滤进行测量评估的测量结果, Mn是物理层 最新的测量结果, Fn-1是上一次(即第 (n-1 )次)经过层三过滤进行测量评 估的测量结果, 过滤参数《 = ^ , k是过滤因子, 代表着历史测量结果(即第
Figure imgf000004_0001
( n-1 )次经过层三过滤的测量结果, 该即第(n-1 )次经过层三过滤的测量结 果中又包含了第(n-2 )次经过层三过滤的测量结果)占最新测量结果的比例, k越小, 说明历史测量结果占的比例越小。 另外, 除非特别说明, 本文提到 的过滤都指定是层三的过滤。
当前协议还规定了 UE的三种移动状态, 正常、 中速和高速。 在实际应 用中, 发现中速和高速的 UE, 上报测量报告的速度会减慢, 在小区边缘时的 切换也会延迟, 严重时会引起掉话。
发明内容
本发明要解决的技术问题是提供一种测量结果过滤方法、 装置及终端, 可以加快中速和高速 UE测量结果上报。
为解决上述技术问题, 本发明提供了一种测量结果过滤方法, 包括: 终端从网络侧获取过滤因子,所述终端根据自身运行速度选择缩放因子, 所述终端根据所述过滤因子和选择的缩放因子对测量结果进行过滤。
优选地,所述缩放因子为:终端从网络侧发送的无线资源控制协议( RRC ) 重配消息中获取的缩放因子, 或者为终端从网络侧发送的系统消息中获取的 缩放因子, 或者为预配置的缩放因子。
优选地, 所述缩放因子包括: 所述终端在非正常速度时的第一缩放因子; 或者中速时的第二缩放因子, 或者高速时的第三缩放因子。
优选地, 所述终端根据自身运行速度选择缩放因子的步骤包括: 所述终 端判断自身处于中速时, 选择所述第一缩放因子, 或者选择所述第二缩放因 子; 所述终端判断自身处于高速时, 选择所述第一缩放因子, 或者选择所述 第三缩放因子。
优选地, 所述终端根据自身运行速度选择缩放因子, 根据所述过滤因子 和选择的缩放因子对测量结果进行过滤的步骤包括: 所述终端判断自身处于 正常速度, 选择无缩放因子; 按照如下公式进行过滤: 1- +Μ«, 其中, α = ~^, ; 或者, 所述终端判断自身处于正常速度, 选择缩放因子为
Figure imgf000005_0001
1; 按照如下公式进行过滤: F„=(i- ")·υ"· , 其中 α = ^, b=l; 或者 按照如下公式进行过滤: =(1- +α'·Μ„, 其中 α' = "^且 a'小于等于 1,
Figure imgf000005_0002
b=l;
其中, Fn是第 n次的经过层三过滤的测量结果, Mn是物理层第 n次的测 量结果, 是第 n-1次经过层三过滤的测量结果, 所述 a和 a'为过滤参数, k 为过滤因子, b为缩放因子。
优选地, 所述终端根据所述过滤因子和选择的缩放因子对测量结果进行 过滤包括: 所述终端按照如下公式进行过滤: - ' -! +^M" , 其中, Fn是第 n次经过层三过滤的测量结果, Mn是物理层第 n次的测量结果, Fn4 是第 n-1 次经过层三过滤的测量结果, 所述 a为过滤参数, a = ^-, 其中 b 为缩放因子, k为过滤因子。
优选地, 所述终端根据所述过滤因子和选择的缩放因子对测量结果进行 过滤包括: 所述终端按照如下公式进行过滤: =(1- α')· — , +α'.Λ^, 其中,
Fn是第 n次的经过层三过滤的测量结果, Mn是物理层第 n次的测量结果, Fn-1 是第 n-1次经过层三过滤的测量结果,所述 a,为过滤参数, 《' = 4且 a'小于等 于 1 , 其中 b为缩放因子, k为过滤因子。
优选地, 对测量结果进行过滤生成过滤结果后, 所述方法还包括: 对所 述过滤结果进行评估, 生成测量^艮告上 ^艮给网络侧。
为解决上述技术问题, 本发明还提供了一种测量结果过滤装置, 包括: 接收模块, 其设置为从网络侧获取过滤因子; 选择模块, 其设置为根据终端 运行速度选择缩放因子; 过滤模块, 其设置为根据所述过滤因子和选择的缩 放因子对终端的测量结果进行过滤。
优选地, 所述缩放因子包括: 所述终端在非正常速度时的第一缩放因子; 或者, 所述终端在中速时的第二缩放因子和所述终端在高速时的第三缩放因 子; 所述选择模块, 是设置为判断终端处于中速时, 选择所述第一缩放因子, 或者选择所述第二缩放因子; 以及判断终端处于高速时, 选择所述第一缩放 因子, 或者选择所述第三缩放因子。
优选地, 所述过滤模块, 是设置为按照如下公式对终端的测量结果进行 过滤: +"·Μ« , 其中, Fn是第 η次的经过层三过滤的测量结果, Μη是物理层第 η次的测量结果, 是第 n-1次经过层三过滤的测量结果,所 述 a为过滤参数, a = -^ , b为缩放因子, k为过滤因子; 或者, 按照如下公 式对终端的测量结果进行过滤: ^ = (1 -«') . — , + α'.Μ 其中, Fn是第 η次的 经过层三过滤的测量结果, Μη是物理层第 η次的测量结果, 是第 n-1次经 过层三过滤的测量结果, 所述 a'为过滤参数, = 且 a'小于等于 1 , b为缩
Figure imgf000006_0001
放因子, k为过滤因子。
为解决上述技术问题, 本发明还提供了一种包括上述测量结果过滤装置 的终端。
釆用本实施例的方法、 装置和系统, 可以加快中速和高速 UE测量结果 上报和切换, 避免掉话。 附图概述
图 1为本发明的测量结果过滤方法实施例流程图;
图 2为本发明的测量结果过滤方法实施例示意图。
本发明的较佳实施方式
在现有技术中, 由于对正常、 中速和高速这三类 UE, 层三的过滤是一样 的, 即都是釆用相同的 k。 但 k是针对正常速度来设置的, 对于中速和高速 的 UE, 由于运行速度比较快, 历史的测量结果可参考性相对减少, 如果还是 按照正常速度的 k值来过滤, 就会出现测量报告上报减慢, 在小区边缘时切 换延迟, 或掉话等现象。
为了解决上述问题, 考虑对上述公式 1中的 k根据 UE运行速度进行放 大或缩小,这样对于中速和高速的 UE,可以相对减少对历史测量结果的参考, 以加快测量报告的上报和切换, 避免掉话。
如图 1所示, 包括如下步骤:
步骤 101、 终端从网络侧获取过滤因子; 步骤 102、 所述终端根据自身运 行速度选择缩放因子;
步骤 103、 终端根据所述过滤因子和选择的缩放因子对测量结果进行过 滤。
对测量结果进行过滤生成过滤结果后, 终端对所述过滤结果进行评估, 生成测量报告上报给网络侧。
所述缩放因子可以是: 终端从网络侧发送的无线资源控制协议(RRC ) 重配消息中获取的; 或者: 终端从网络侧发送的系统消息中获取的; 或者: 预配置给终端的。 缩放因子包括: 非正常速度时的第一缩放因子, 或者中速 时的第二缩放因子和高速时的第三缩放因子。 正常速度时的缩放因子默认为 1也可以理解为没有缩放因子, 即可以按照下述公式 2或公式 3进行过滤, 或者按照公式 1进行过滤。
所述终端根据自身运行速度选择缩放因子的步骤包括:
所述终端处于空闲态时, 所述终端判断单位时间内进行小区重选的次数 如果高于第一门限低于第二门限, 则所述终端判断自身处于中速, 选择非正 常速度时的第一缩放因子, 或者选择中速时的第二缩放因子; 所述终端判断 单位时间内进行小区重选的次数如果高于第二门限, 则所述终端判断自身处 于高速, 选择非正常速度时的第一缩放因子, 或者选择高速时的第三缩放因 子。 所述终端处于连接态时, 所述终端判断单位时间内进行小区切换的次数 如果高于第一门限低于第二门限, 则所述终端判断自身处于中速, 选择非正 常速度时的第一缩放因子, 或者选择中速时的第二缩放因子; 所述终端判断 单位时间内进行小区切换的次数如果高于第二门限, 则所述终端判断自身处 于高速, 选择非正常速度时的第一缩放因子, 或者选择高速时的第三缩放因 子。
关于终端正常速度、 中速、 高速的定义可参见 3GPP TS 36.304协议。 具体地, 当终端处于空闲态时, 终端通过统计小区重选的次数, 并且和 网络配置的控制参数按照一定的规则进行比较, 然后确定终端的移动速度。 也可以釆用其他的手段, 比如 GPS , 或者位置更新的频度等等来确定移动速 度。 LTE中终端的移动速度分为三种, 高速、 中速和正常。 网络侧通过系统 消息广播将控制参数通知终端,包含 TCRMAX (计算小区重选次数的时间范围 ) , NCI^M和 NCR I (小区重选的最大次数) , TCRMAXHYST (终端离开非正常速度状 态前的一个时间范围)。 终端将才艮据这些参数来决定自身的移动状态, 比如, 在 TCRMAX时间范围内终端进行小区重选的次数超过 NCI^M但是没有超过 NCR-H, 则认为进入中速状态, 在 TCRMAX时间范围内终端进行小区重选的次数 超过 NCR I,则认为进入高速状态,如果在 TCRMAXHYST时间范围内终端不满足进 入高速和中速状态的条件, 则可以恢复正常状态。 当终端处于连接态时, 上 述统计过程同样适用, 只是统计的是切换的次数。
终端根据所述过滤因子和选择的缩放因子对测量结果进行过滤的步骤包 括:
所述终端按照如下公式进行过滤:
Fn = (l - a) - Fn_x + a -Mn 公式 2 其中, ?是最新的经过层三过滤的测量结果, MN是物理层最新的测量结 果, 是上一次经过层三过滤的测量结果, 所述 a为过滤参数, a = ^, 其 中 b为缩放因子, 0<b l, k为过滤因子。
或者,
所述终端按照如下公式进行过滤:
Fn = \-a')- Fn_x +a'-Mn 公式 3 其中, 所述 a'为过滤参数, = 且 a'小于等于 1, 其中 b为缩放因子,
Figure imgf000009_0001
b>l, k为过滤因子。
上述 b, 可以通过百分比表示, 如 b设置为 25%, 则公式 2中的 "bk" 是公式 1中 "k" 的 25%; 如 b设置为 125%, 则公式 3中的 a'要放大到公式 1 中 a的 125%。
下面对技术方案的实施作进一步的详细描述。 需要说明的是, 在不冲突 的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。
实施例中测量任务的触发事件可以是当前以及后续 LTE中定义的测量事 件如 A3, A5, Bl, B2, 不限定于实施例中所涉及的测量事件如 A4。
实施例一
在本实施例中, UE1、 UE2、 UE3 都处于连接态, 当前服务小区的载频 为 fl, 网络侧分别发送测量控制消息给 UE1、 UE2、 和 UE3, 其中, 该测量 控制消息中都包括一个测量任务: 测量标识为 1, 测量对象为 fl上的小区, 报告配置为事件 A4触发 (邻区信号质量优于指定门限, 即层三过滤后的邻接 小区信号质量优于该指定门限后触发测量报告 ), 同时通知 UE根据 UE的运 行速度将层三过滤中公式 1的 a进行缩放即釆用公式 3进行过滤, 针对中速 UE缩放因子设置为 125%, 针对高速 UE缩放因子设置为 150%。
UE1处于正常速度,UE1在 P1点开始执行测量标识为 1的测量任务的测 量并进行测量结果的评估, 在图 2中 PI, P2, P3, P4, P5, P6, P7几点, 物理层上报测量结果给高层, UE1根据公式 3来对物理层的测量结果进行层 三过滤, k釆用网络侧配置的值, b=l , 在 P5点发现邻接小区满足事件 A4的 触发条件, 上报测量报告给网络侧, 网络侧根据测量报告决定将 UE1切换到 邻接小区。
UE2处于中速(假设速度是正常速度的 2倍), UE2在 P1点开始执行测 量标识为 1的测量任务的测量并进行测量结果的评估,在图 2中 PI , P3 , P5, P7几点, 物理层上报测量结果给高层, UE2根据公式 3来对物理层的测量结 果进行层三过滤, k釆用网络侧配置的值, b=125%, 相当于将公式 1 中的 a 值进行速度放大到 a'=a*125%, 在 P5点发现邻接小区满足事件 A4的触发条 件, 上报测量报告给网络侧, 网络侧根据测量报告决定将 UE2切换到邻接小 区。 上述, 如果不对 a进行速度放大, 那么根据公式 1 , 在 P5点邻接小区是 不能满足事件 A4的触发条件的, 需要到 P7点才能触发测量报告。
UE3处于高速(假设速度是正常速度的 3倍), UE3在 P1点开始执行测 量标识为 1的测量任务的测量并进行测量结果的评估, 在图 2中 PI , P4, P7 几点, 物理层上报测量结果给高层, UE3根据公式 3来对物理层的测量结果 进行层三过滤, k釆用网络侧配置的值, b=150%, 相当于将公式 1中的 a值 进行速度放大到 a'=a*150%,在 P4点发现邻接小区满足事件 A4的触发条件, 上报测量报告给网络侧, 网络侧根据测量报告决定将 UE3切换到邻接小区。 上述, 如果不对 a进行速度放大, 那么根据公式 1 , 在 P4点邻接小区是不能 满足事件 A4的触发条件的, 需要到 P7点才能触发测量报告。
本实施例中, 也可以进一步优化, 即网络侧只配置一个缩放因子即针对 非正常速度 UE (包含中速和高速 UE )缩放因子设置为 125%, 将公式 1中的 a值进行速度放大到 a'=a* 125%。
上述缩放因子也可以在协议中指定, 或者通过系统消息广播给终端, 终 端根据自身速度选择合适的缩放因子后, 对测量结果的过滤同上述过程, 不 再重复描述。
实施例二
背景同实施例一,区别是在本实施例中网络侧通知 UE根据 UE的运行速 度将层三过滤中的 k进行缩放, 针对中速 UE缩放因子设置为 75%, 针对高 速 UE缩放因子设置为 50%。
UE1处于正常速度,UE1在 P1点开始执行测量标识为 1的测量任务的测 量并进行测量结果的评估, 在图 2中 PI , P2, P3 , P4, P5 , P6, P7几点, 物理层上报测量结果给高层, UE1根据公式 2来对物理层的测量结果进行层 三过滤, k釆用网络侧配置的值, b=l , 在 P5点发现邻接小区满足事件 A4的 触发条件, 上报测量报告给网络侧, 网络侧根据测量报告决定将 UE1切换到 邻接小区。
UE2处于中速(假设速度是正常速度的 2倍), UE2在 P1点开始执行测 量标识为 1的测量任务的测量并进行测量结果的评估,在图 2中 PI , P3 , P5 , P7几点, 物理层上报测量结果给高层, UE2根据公式 2来对物理层的测量结 果进行层三过滤,相当于将公式 1中的 k进行速度缩小到 k*75%, 在 P5点发 现邻接小区满足事件 A4的触发条件,上报测量报告给网络侧, 网络侧根据测 量报告决定将 UE2切换到邻接小区。 上述, 如果不对 k进行速度缩小, 那么 根据公式 1 , 在 P5点邻接小区是不能满足事件 A4的触发条件的, 需要到 P7 点才能触发测量报告。
UE3处于高速(假设速度是正常速度的 3倍), UE3在 P1点开始执行测 量标识为 1的测量任务的测量并进行测量结果的评估, 在图 2中 PI , P4, P7 几点, 物理层上报测量结果给高层, UE3根据公式 2来对物理层的测量结果 进行层三过滤,相当于将公式 1中的 k进行速度缩小到 k*50%, 在 P4点发现 邻接小区满足事件 A4的触发条件,上报测量报告给网络侧, 网络侧根据测量 报告决定将 UE3切换到邻接小区。 上述, 如果不对 k进行速度缩小, 那么根 据公式 1 , 在 P4点邻接小区是不能满足事件 A4的触发条件的, 需要到 P7点 才能触发测量报告。
实施例三
实现上述方法的装置, 包括接收模块、 选择模块和过滤模块, 其中: 接收模块, 其用于从网络侧获取过滤因子; 选择模块, 其用于根据终端运行速度选择缩放因子; 过滤模块, 其用于根据所述过滤因子和选择的缩放因子对终端的测量结 果进行过滤。
所述缩放因子包括: 非正常速度时的第一缩放因子; 或者, 中速时的第 二缩放因子和高速时的第三缩放因子; 所述选择模块, 用于判断终端处于中 速时, 选择非正常速度时的第一缩放因子, 或者选择中速时的第二缩放因子; 以及判断终端处于高速时, 选择非正常速度时的第一缩放因子, 或者选择高 速时的第三缩放因子。 所述过滤模块, 用于按照如下公式对终端的测量结果进行过滤: Fn =(\-a)-Fn_1 +a-Mn^ 其中, ^是最新的经过层三过滤的测量结果, Mn是物 理层最新的测量结果, 是上一次经过层三过滤的测量结果, 所述 a为过滤 参数, a = -, b为缩放因子, k为过滤因子; 或者, 按照如下公式对终端的 测量结果进行过滤: =(1- ,+α'.Μ 其中,所述 a'为过滤参数, α' = " 且 a'小于等于 1, b为缩放因子, k为过滤因子。
Figure imgf000012_0001
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业实用性 本发明提供一种测量结果过滤方法、 装置及终端, 可以加快中速和高速 UE测量结果上报。通过终端从网络侧获取过滤因子, 所述终端根据自身运行 速度选择缩放因子, 所述终端根据所述过滤因子和选择的缩放因子对测量结 果进行过滤, 来解决所述技术问题。 釆用本实施例的方法、 装置和系统, 可 以加快中速和高速 UE测量结果上报和切换, 避免掉话。

Claims

权 利 要 求 书
1、 一种测量结果过滤方法, 包括:
终端从网络侧获取过滤因子,所述终端根据自身运行速度选择缩放因子, 所述终端根据所述过滤因子和选择的缩放因子对测量结果进行过滤。
2、 如权利要求 1所述的方法, 其中: 重配消息中获取的缩放因子, 或者为所述终端从所述网络侧发送的系统消息 中获取的缩放因子, 或者为预配置的缩放因子。
3、 如权利要求 1或 2所述的方法, 其中:
所述缩放因子包括: 所述终端在非正常速度时的第一缩放因子, 或者所 述终端在中速时的第二缩放因子, 或者所述终端在高速时的第三缩放因子。
4、 如权利要求 3所述的方法, 其中:
所述终端根据自身运行速度选择缩放因子的步骤包括:
所述终端判断自身处于中速时, 选择所述第一缩放因子, 或者选择所述 第二缩放因子;
所述终端判断自身处于高速时, 选择所述第一缩放因子, 或者选择所述 第三缩放因子。
5、 如权利要求 1所述的方法, 其中:
所述终端根据自身运行速度选择缩放因子, 根据所述过滤因子和选择的 缩放因子对测量结果进行过滤的步骤包括:
所述终端判断自身处于正常速度, 选择无缩放因子; 按照如下公式进行 过滤: ^ ^1 -") · "-! +^ ", 其中, a = ;
Figure imgf000014_0001
或者,
所述终端判断自身处于正常速度, 选择缩放因子为 1 ; 按照如下公式进 行过滤: = 0 - 其中 " =^ , b=l ; 或者按照如下公式进行
2τ 过滤: ^ =0 '.Μ„, 其中 α' = ~ ^且 α'小于等于 1, b=l; 其中, Fn是第 n次的经过层三过滤的测量结果, Mn是物理层第 n次的测 量结果, 是第 n-1次经过层三过滤的测量结果, 所述 a和 a'为过滤参数, k 为过滤因子, b为缩放因子。
6、 如权利要求 1或 4所述的方法, 其中:
所述终端根据所述过滤因子和选择的缩放因子对测量结果进行过滤包 括:
所述终端按照如下公式进行过滤:
Fn =(l-a)-Fn_l +a-Mn^ 其中, Fn是第 n次的经过层三过滤的测量结果, Mn是物理层第 n次的测 量结果, 是第 n-1次经过层三过滤的测量结果,所述 α为过滤参数, α = -^, 其中 b为缩放因子, k为过滤因子。
7、 如权利要求 1或 4所述的方法, 其中:
所述终端根据所述过滤因子和选择的缩放因子对测量结果进行过滤包 括:
所述终端按照如下公式进行过滤:
Fn =(\-a')-Fn_x+a'-Mn, 其中, Fn是第 n次的经过层三过滤的测量结果, Mn是物理层第 n次的测 量结果, 是第 n-1次经过层三过滤的测量结果,所述 为过滤参数, α' = "
Figure imgf000015_0001
且 小于等于 1, 其中 b为缩放因子, k为过滤因子。
8、 如权利要求 1所述的方法, 其中: 对测量结果进行过滤生成过滤结果 后, 所述方法还包括:
对所述过滤结果进行评估, 生成测量^艮告上 ^艮给所述网络侧。
9、 一种测量结果过滤装置, 包括:
接收模块, 其设置为从网络侧获取过滤因子; 选择模块, 其设置为根据终端运行速度选择缩放因子; 以及 过滤模块, 其设置为根据所述过滤因子和选择的缩放因子对所述终端的 测量结果进行过滤。
10、 如权利要求 9所述的装置, 其中,
所述缩放因子包括: 所述终端在非正常速度时的第一缩放因子; 或者, 所述终端在中速时的第二缩放因子和所述终端在高速时的第三缩放因子; 所述选择模块是设置为: 判断所述终端处于中速时, 选择所述第一缩放 因子, 或者选择所述第二缩放因子; 以及判断所述终端处于高速时, 选择所 述第一缩放因子, 或者选择所述第三缩放因子。
11、 如权利要求 9或 10所述的装置, 其中,
所述过滤模块是设置为: 按照如下公式对终端的测量结果进行过滤:
Fn =(\-a)-Fn_1 +a-Mn^ 其中, Fn是第 n次的经过层三过滤的测量结果, ^^是 物理层第 n次的测量结果, 是第 n-1次经过层三过滤的测量结果,所述《为 过滤参数, α = τ' b为缩放因子, k为过滤因子; 或者
2
按照如下公式对终端的测量结果进行过滤: Fn = (Ι-α')·^, +α'-Μη,其中, Fn是第 η次的经过层三过滤的测量结果, Μη是物理层第 η次的测量结果, Fn-1 是第 n-1次经过层三过滤的测量结果, 所述 为过滤参数, = 且 小于等 于 1, b为缩放因子, k为过滤因子。
12、 一种测量结果过滤终端, 包括权利要求 8-10中任一项所述的装置。
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