WO2011069457A1 - 多载波系统的测量评估方法、系统及装置 - Google Patents

多载波系统的测量评估方法、系统及装置 Download PDF

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Publication number
WO2011069457A1
WO2011069457A1 PCT/CN2010/079604 CN2010079604W WO2011069457A1 WO 2011069457 A1 WO2011069457 A1 WO 2011069457A1 CN 2010079604 W CN2010079604 W CN 2010079604W WO 2011069457 A1 WO2011069457 A1 WO 2011069457A1
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Prior art keywords
measurement
cell
signal quality
enb
configuration information
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PCT/CN2010/079604
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English (en)
French (fr)
Inventor
李海涛
梁靖
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大唐移动通信设备有限公司
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Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to US13/514,717 priority Critical patent/US20120250562A1/en
Priority to KR1020127017166A priority patent/KR101452920B1/ko
Priority to EP10835492A priority patent/EP2512174A4/en
Publication of WO2011069457A1 publication Critical patent/WO2011069457A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a measurement and evaluation method, system and apparatus for a multi-carrier system. Background of the invention
  • LTE Long Term Evolution
  • LTE-A LTE Advanced
  • the peak rate of the LTE-A system is greatly improved compared to the LTE system, and it is required to reach the downlink 1 Gbps and the uplink 500 Mbps.
  • the peak rate requirement cannot be reached.
  • the LTE-A system needs to expand the bandwidth that the terminal can use, thereby introducing carrier aggregation (CA) technology, which is about to be the same.
  • CA carrier aggregation
  • Multiple consecutive or non-contiguous carriers under one evolved base station (eNB) are aggregated together while serving user equipment (UE) to provide the required rate.
  • These aggregated carriers are also called component carriers (CC).
  • Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated.
  • each carrier does not exceed 20 MHz at most.
  • FIG. 2 it is a schematic diagram of carrier aggregation in the LTE-A system in the prior art. In this schematic diagram, four component carriers are aggregated together, and the eNB can simultaneously be in 4 Data transmission is performed on the component carriers and the UE to improve system throughput.
  • the embodiment of the present invention provides a measurement and evaluation method for the multi-carrier system, including the following steps:
  • the user equipment UE receives the measurement configuration information sent by the evolved base station eNB, and the measurement configuration information
  • the UE includes at least a frequency point to be measured and a report configuration;
  • the UE determines, according to the measurement configuration information and the current aggregated cell, the signal quality of the reference cell to be measured;
  • the UE performs signal quality measurement on the target cell at the frequency point, and
  • the target cell is evaluated according to the signal quality of the reference cell, and the measured signal quality is reported to the reporting condition if the measured signal quality meets the reporting condition in the reporting configuration.
  • eNB the measurement and evaluation method for the multi-carrier system
  • the embodiment of the present invention further provides a UE, including a receiving module, a determining module, a measurement evaluating module, and a reporting module.
  • the receiving module is configured to receive measurement configuration information that is sent by the eNB that is used by the UE, where the measurement configuration information includes at least a frequency point to be measured and a report configuration, and the determining module is configured to use the measurement configuration information and the current.
  • the aggregated cell determines to measure and compare the signal quality of the reference cell; the measurement and evaluation module performs signal quality measurement on the target cell at the frequency point, and based on the signal quality of the measurement and comparison reference cell, according to the report
  • the device is configured to perform the evaluation on the target cell.
  • the reporting module is configured to report the measured signal quality to the eNB when the evaluation result is that the measured signal quality meets the reporting condition in the reporting configuration.
  • An embodiment of the present invention further provides an eNB, including a measurement configuration information configuration module and a sending module.
  • a measurement configuration information configuration module configured to configure measurement configuration information for a UE served by an eNB, where the measurement configuration information includes at least a frequency to be measured and a report configuration in a multi-carrier system
  • the sending module is configured to configure the measurement
  • the measurement configuration information configured by the information configuration module is sent to the UE, so that the UE performs signal quality measurement and evaluation on the target cell under the frequency point according to the measurement configuration information and the current aggregated cell.
  • Embodiments of the present invention also provide a measurement and evaluation system for a multi-carrier system, including an eNB. And at least one UE served by the eNB.
  • the eNB is configured to send measurement configuration information to the user equipment UE, where the measurement configuration information includes at least a frequency to be measured and a report configuration, and the UE is configured to determine, according to the measurement configuration information and the current aggregated cell, a signal quality of the reference cell. And measuring the signal quality of the target cell under the measurement frequency point, measuring the signal quality of the comparison reference cell, evaluating the target cell according to the reporting configuration, and evaluating the reporting condition that the measurement result satisfies the reporting condition in the reporting configuration The measurement result is reported to the eNB.
  • the problem that the aggregation target cell and the plurality of current aggregation cells are compared and compared can be solved, thereby solving the prior art multi-carrier system. Measurement assessment problem.
  • 1 is a schematic diagram of carrier distribution of an LTE cell of an existing LTE system
  • FIG. 2 is a schematic diagram of carrier aggregation of an LTE-A system in the prior art
  • FIG. 3 is a schematic diagram of an eNB to which a UE belongs according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for managing a component carrier according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of an eNB to which a UE belongs according to another embodiment of the present invention.
  • FIG. 7 is a structural diagram of a measurement and evaluation system of a multi-carrier system according to an embodiment of the present invention. Mode for carrying out the invention
  • the measurement mechanism for measuring the signal quality of the single cell is as follows: First, the eNB sends the measurement configuration information to the UE by using a radio resource control (RRC, Radio Resource Control) connection reconfiguration process, where the measurement configuration information includes the measurement object. , report configuration, measurement ID, and other parameters.
  • the measurement object is based on the frequency point, and each configured measurement object is a single frequency point, and has a separate measurement object identifier (ID).
  • ID measurement object identifier
  • the report configuration can be divided into event trigger report and periodic trigger report. Each report configuration has a separate ID.
  • the event trigger type report configuration sets the threshold of an event and the duration of the trigger condition.
  • the report type of the trigger type sets the purpose of periodic triggering, for example, reporting the cell global ID (CGI, Cell Global ID).
  • CGI Cell Global ID
  • Event (A1) (Serving to better than threshold);
  • Event A3 the neighboring cell signal quality is better than the serving cell signal quality, Neighbor becomes offset better than serving;
  • Event A4 Neighbor cell signal quality is greater than threshold, Neighbor becomes better than threshold
  • Event A5 The signal quality of the serving cell is less than the threshold 1 and the neighboring cell letter Serving becomes worse than threshold 2, Serving becomes worse than threshold 2 and neighbour becomes better than threshold 2)
  • the measurement identifier is a separate ID, and one measurement object can be connected to the upper >3 ⁇ 4 configuration. If the measurement open threshold is reached, the UE determines whether to perform the measurement based on the presence or absence of the measurement identifier. Other parameters can also include parameters such as measurement configuration, measurement opening threshold, and speed status parameters.
  • the UE measures the signal quality of the cell according to the content of the measurement configuration information (same frequency, different frequency, and different technology), and then reports the measurement result to the eNB.
  • the measurement configuration information standard frequency, different frequency, and different technology
  • the measurement report message mainly includes: each measurement report message can only report the content corresponding to one measurement identifier, that is, a cell that meets the relevant report configuration at a frequency point, and the measurement report message includes: a measurement identifier, each measurement quantity of the cell, The reference signal received power (RSRP, Reference Signal Received Power) and the reference signal received quality (RSRQ, Reference Signal Received Quality), and the physical layer cell ID of the neighboring cell satisfying the condition, and the like. Whether to report the measurement volume and CGI of each neighboring cell depends on whether the network is configured with the UE to report such information.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • the process of UE measurement is as follows:
  • Measurement evaluation The UE finds a cell that meets the reporting configuration in a certain measurement object through measurement, and performs evaluation, when a certain cell is in a certain period of time. (TimeToTrigger) meets the admission condition and is included in the report list. Once a new cell enters the report list, the escalation process is triggered.
  • b) Organization report that is, the process of filling in the measurement report message, and filling in the measurement identifier, the measurement information of the current cell, and the measurement information of the neighboring cell.
  • the process of obtaining the neighbor cell measurement information is: the cell included in the report list in a) is measured according to the measurement amount given in the measurement configuration information. The row quality is sorted, and the measurement report message is filled in order from high to low.
  • the reported measurement amount may be a reference signal received power (RSRP) value or a reference signal received quality (RSRQ) value.
  • the measurement mechanism of the LTE system described above only considers the case where the UE has only one serving cell, and in the multi-carrier system, the UE often has multiple serving cells, and thus the above measurement mechanism is not applicable to the multi-carrier system.
  • embodiments of the present invention propose a measurement and evaluation scheme for a multi-carrier system.
  • a measurement evaluation method for a multi-carrier system may include the following steps:
  • the user equipment UE receives the measurement configuration information sent by the evolved base station eNB, where the measurement configuration information includes at least a frequency point to be measured and a report configuration;
  • the UE performs signal quality measurement on the target cell in the frequency to be measured, and performs evaluation on the target cell according to the reporting configuration based on the signal quality of the measurement comparison reference cell;
  • the result of the evaluation is that the measured signal quality satisfies the reporting condition carried in the reporting configuration, the measured signal quality is reported to the eNB.
  • the frequency of the measurement to be measured in the measurement configuration information sent by the eNB may include one or more target cells that can be aggregated.
  • the network can perform member carrier tube Management and mobility management (for example, switching), both of which can be implemented simultaneously or separately.
  • the component carrier manages measurement information configured for a cell currently campable by the UE, and may deactivate the signal when the signal quality of the cell is degraded, and activate the signal quality as much as possible.
  • the cell provides services for the UE. For example, as shown in FIG.
  • FIG. 3 it is a schematic diagram of an eNB to which a UE belongs according to an embodiment of the present invention, where a current aggregation operation of the UE is performed on cells 1 and 2, for currently aggregated carrier frequency points (fl, f2, and f3), the network Component carrier management measurements are configured to assist in possible deactivation operations for cells 1 and 2 and activation operations for cell 3.
  • the eNB needs to configure mobility measurement for mobility management (eg, handover), specifically, as shown in FIG. 3, cell 4 And 5 are carriers that the UE cannot currently aggregate.
  • the network needs the UE to perform signal quality evaluation on the two cells and report it.
  • the UE cannot provide services for the UE, but under the eNB2.
  • the cell 4 and cell 5 have better signal quality and can continue to provide services for the UE.
  • the eNB will choose to handover the UE from cell 1 and cell 2 of eNB 1 to cell 4 and cell 5 of eNB 2. Through multi-carrier switching, carrier aggregation can be continued. Transmission, so that the UE can always be provided with a higher rate of service.
  • the component carrier management and mobility management of the present invention will be described in detail below in the manner of a specific embodiment. It should be noted that, in the current LTE-A system, the definition of the serving cell is not clear.
  • the measurement comparison reference cell is used to describe the UE used for comparison with the target frequency point in the measurement process.
  • the cell corresponding to the current aggregated carrier is used.
  • the method of the present invention may be described by using the concept of the serving cell according to the corresponding relationship.
  • other similar concepts may be adopted, such as the aggregate carrier of the UE, the cell corresponding to the UE aggregated carrier, and the like. Embodiments of the invention are described.
  • Embodiment 1 component carrier management will be described.
  • the eNB may configure, for each carrier frequency point currently aggregated by the UE, a measurement that detects a deterioration of the link quality (for example, an A2 event); and configures detection for other aggregated carrier frequency points other than the current aggregated carrier of the UE.
  • the measurement of the link quality is better (for example, A4 event).
  • 4 is a flowchart of component carrier management according to Embodiment 1 of the present invention. As shown in FIG. 4, component carrier management includes the following steps:
  • Step S401 The UE receives the measurement configuration information sent by the eNB, and the sent measurement configuration information includes at least a frequency point and a report configuration of the target cell that can be aggregated. Measurement configuration information also includes measurement identification or other parameters.
  • FIG. 5 it is a schematic diagram of an eNB to which a UE belongs according to an embodiment of the present invention.
  • the upper configuration is that the eNB l configures the measurement of the A2 event for the UE on the frequencies fl and f2, and the measurement of the A4 event for the frequencies f3 and f4.
  • Step S402 The UE performs signal quality measurement on the frequency of the current aggregated cell and the frequency of the targetable cell, and returns the measurement result to the eNB when the measured signal quality meets the reporting condition carried in the reporting configuration.
  • the UE performs corresponding measurement on the four frequency points according to the reporting configuration, and reports the measurement result to the eNB when the measurement reporting condition of the respective frequency points is satisfied.
  • Step S403 The eNB performs component carrier management according to the measurement result reported by the UE. For example, in the case shown in FIG. 5, the eNB determines whether to deactivate the cell 1/cell 2 or activate the cell 3/cell 4 according to the reported measurement result.
  • Mobility management is described in an embodiment of the present invention. Mobility management can include both on-frequency mobility measurements and/or inter-frequency mobility measurements.
  • the intra-frequency mobility management measurement refers to the measurement of the target frequency point of each carrier frequency currently aggregated by the UE, and the configuration of the measurement event may be adopted with the LTE single carrier system.
  • the same measurement event configuration mode may also be a unique measurement event configuration mode in the LTE-A system (such as a measurement event of a customized LTE-A system), and use a cell in the current aggregated carrier of the UE with the same frequency as the mobility management.
  • the measured comparison reference cell is described in an embodiment of the present invention. Mobility management can include both on-frequency mobility measurements and/or inter-frequency mobility measurements.
  • the intra-frequency mobility management measurement refers to the measurement of the target frequency point of each carrier frequency currently aggregated by the UE, and the configuration of the measurement event may be adopted with the LTE single carrier system.
  • the same measurement event configuration mode may also be a unique measurement event configuration mode in the LTE-
  • the inter-frequency mobility management measurement refers to a measurement of a target frequency point other than the current aggregated carrier of the UE, and the configuration of the measurement event may be the same as that of the LTE single carrier system.
  • the measurement event configuration mode can also be a unique measurement event configuration method in the LTE-A system.
  • FIG. 6 is a flowchart of mobility management according to Embodiment 2 of the present invention. As shown in Figure 6, mobility management includes the following steps:
  • Step S601 The UE receives the measurement configuration information sent by the eNB, where the measurement configuration information includes at least a frequency point and a report configuration of the target cell that can be aggregated.
  • the measurement configuration information may also include a measurement identifier or other parameters.
  • the reporting configuration has different manners for the same-frequency mobility management measurement and the inter-frequency mobility management measurement, and the detailed description will be made in the manner of a specific embodiment. It is a matter of course that those skilled in the art can make equivalent modifications or substitutions in accordance with the present invention and the following embodiments, and such equivalent modifications and substitutions are intended to be included within the scope of the present invention.
  • Step S602 The UE determines, according to the measurement configuration information and the current aggregated cell, the signal quality of the measurement reference cell.
  • the comparing, by the UE, the reference cell according to the current aggregate cell selection measurement may include:
  • the signal quality of the special cell in the current aggregated cell of the UE is used as a measurement to compare the signal quality of the reference cell, and the special cell provides the security parameter input and the corresponding UE.
  • a carrier of mobility information (NAS, Non-Access Stratum) may also be referred to as a primary cell; or
  • Step S603 The UE performs measurement on the target cell that can be aggregated, and based on the measurement and comparison of the signal quality of the reference cell, evaluates the target cell that can be aggregated according to the measurement event. For example, if the measurement event is an A3 event, then it is evaluated according to A3 whether the signal quality of the aggregated target cell is much stronger than that of the measurement reference cell. If the evaluation result is that the measurement result satisfies the inequality condition of A3, the trigger is triggered. The measurement reporting process.
  • the measurement may be involved in the measurement event comparison reference cell offset (offset) value may be selected as the measurement comparison reference cell corresponding to the offset value, for the scheme d, the measurement event
  • the offset value of the measurement comparison reference cell that may be involved may be a comprehensive evaluation result of the offset value of the current plurality of aggregated carriers of the UE, such as an arithmetic average or a weighted average.
  • Step S604 Determine whether the measurement result meets the reporting condition carried in the reporting configuration according to the evaluation result and the reporting configuration. If the reporting condition is met, the measurement result is reported to the eNB, and the eNB performs mobility management on the UE according to the measurement result.
  • the UE may also report the selected measurement comparison reference cell information to the eNB according to the eNB does not know the measurement determined by the UE, for example, report the PCI information or the carrier number information of the measurement comparison reference cell. .
  • This embodiment describes the same frequency mobility management measurement.
  • the eNB is connected.
  • the UE performs the same-frequency mobility management measurement configuration over RRC signaling.
  • the measurement of the A3 event is configured on the frequencies fl and f2.
  • the UE's measurement on the target frequency point fl uses the currently aggregated cell 1 as a measurement comparison reference cell to evaluate the signal quality of the cell (eg, cell 5) at the target frequency point, and the measurement at the target frequency point f2 uses the currently aggregated cell. 2
  • the signal quality of the cell e.g., cell 6
  • the corresponding measurement results are reported to the network.
  • the embodiment of the present invention describes the inter-frequency mobility measurement, and selects the current aggregated cell with the best signal quality as the measurement comparison reference cell.
  • the eNB1 performs the inter-frequency mobility management measurement configuration on the UE by using RRC signaling, for example, the measurement of the A5 event is configured on the frequencies f3 and f4.
  • the UE detects (e.g., according to the configured component carrier management (CC management) measurement or protocol pre-defined) that the current cell 1 has the best signal quality, and then uses cell 1 as the comparative reference cell for the inter-frequency mobility management measurement.
  • CC management component carrier management
  • the relevant parameters may be configured by the network or may be determined by the UE or by agreement.
  • the comparison amount can be selected as RSRP/RSRQ/CQI, etc.
  • Another option is to compare the instantaneous signal quality to select the cell with the best signal quality.
  • the UE's measurement on the target frequency point f3 uses the cell 1 as a measurement comparison reference cell to evaluate the signal quality of the cell (eg, cell 7) at the target frequency point, and the measurement at the target frequency point f4 also uses the cell 1 as a measurement comparison reference.
  • the cell evaluates the signal quality of the cell (e.g., cell 8) at the target frequency.
  • Embodiment 5 After the measurement result satisfies the measurement reporting condition on the frequency points f3 and f4, the corresponding measurement result is reported to the eNB1, and the identifier of the cell 1, such as the PCI or the carrier number, may also be carried at the same time.
  • Embodiment 5 After the measurement result satisfies the measurement reporting condition on the frequency points f3 and f4, the corresponding measurement result is reported to the eNB1, and the identifier of the cell 1, such as the PCI or the carrier number, may also be carried at the same time.
  • This embodiment describes the inter-frequency mobility management measurement and selects the current aggregated cell with the worst signal quality as the measurement comparison reference cell.
  • the eNB1 performs inter-frequency mobility management measurement configuration on the UE through RRC signaling, for example, the measurement of the A5 event is configured on the frequencies f 3 and f4.
  • the UE detects (e.g., according to the configured CC management measurement or protocol pre-specified) that the current cell 2 has the worst signal quality, and uses cell 2 as the comparison reference frequency of the inter-frequency mobility management measurement.
  • the measurement of the UE with the worst signal quality on the UE side it may be selected that the signal quality of a certain cell is always lower than other cells within a certain period of time, and the relevant parameters (comparison time/comparative amount) may be configured by the network or may be determined by the UE or by agreement.
  • the comparison amount can be selected as RSRP/RSRQ/CQI, etc.
  • Another option is to compare the instantaneous signal quality to select the cell with the worst signal quality.
  • the UE's measurement on the target frequency point f3 uses the cell 2 as a measurement comparison reference cell to evaluate the signal quality of the cell (eg, cell 7) at the target frequency point, and the measurement at the target frequency point f4 also uses the cell 2 as a measurement comparison reference.
  • the cell evaluates the signal quality of the cell (e.g., cell 8) at the target frequency. After the measurement results on the frequency points f3 and f4 satisfy the measurement reporting condition, the corresponding measurement result is reported to the eNB1, and the identifier of the cell 2, such as the PCI or the carrier number, may also be carried at the same time.
  • This embodiment describes the inter-frequency mobility management measurement and selects a special cell as the measurement reference cell.
  • the eNB1 performs an inter-frequency mobility management measurement configuration on the UE through RRC signaling, for example, the measurement of the A5 event is configured on the frequencies f3 and f4.
  • the special cell currently working by the UE is cell 1
  • cell 1 is used as a comparative reference cell for inter-frequency mobility measurement.
  • the special cell in which the UE is currently working may be configured by the network.
  • the measurement of the UE at the target frequency point f3 uses the cell 1 as a measurement comparison reference cell to evaluate the target frequency.
  • the signal quality of the cell e.g., cell 7
  • the measurement at the target frequency f4 also uses cell 1 as a measurement comparison reference cell to evaluate the signal quality of the cell (e.g., cell 8) at the target frequency.
  • the embodiment of the present invention describes the inter-frequency mobility management measurement, and selects the comprehensive evaluation result of the current cell signal quality of the UE to be used as the signal quality of the measurement comparison reference cell.
  • the eNB performs the inter-frequency mobility management measurement configuration on the UE through RRC signaling, for example, the measurement of the A5 event is configured on the frequencies f3 and f4.
  • the UE measures (e.g., according to the configured CC management measurement or protocol) the signal quality of the currently aggregated cell 1 and cell 2, and arithmetically averages the signal quality of the two as the signal quality of the measurement reference cell.
  • the measurement of the UE at the target frequency f3 uses the equivalent measurement to compare the signal quality of the reference cell to evaluate the signal quality of the cell at the target frequency (eg, cell 7), and the measurement at the target frequency f4 also uses the same.
  • the measure of effectiveness compares the signal quality of the reference cell to evaluate the signal quality of the cell (e.g., cell 8) at the target frequency. After the measurement result satisfies the measurement reporting condition on the frequency points f3 and f4, the corresponding measurement result is reported to the eNB 1.
  • FIG. 7 is a structural diagram of a measurement and evaluation system of a multi-carrier system according to an embodiment of the present invention.
  • the system includes an eNB 100 and at least one UE 200 served by an eNB 100.
  • the eNB 100 is configured to send measurement configuration information to the UE 200, where the sent measurement configuration information includes at least a frequency point and a reporting configuration where the target cell is aggregated.
  • the UE 200 is configured to determine, according to the measurement configuration information and the current aggregated cell, the signal quality of the reference reference cell, and measure the target aggregatable cell at the frequency point to measure the signal quality of the reference reference cell to be aggregated.
  • the target cell is evaluated, and the measurement result is judged according to the evaluation result and the report configuration, and if the report condition carried in the report configuration is satisfied, if The measurement result is reported to the eNB 100 when the reporting condition is met.
  • the eNB 100 includes a measurement configuration information configuration module 110 and a transmission module 120.
  • the measurement configuration information configuration module 110 is configured to configure measurement configuration information for the UE 200, where the measurement configuration information includes at least a frequency point and a report configuration where the target cell that can be aggregated is located.
  • the transmitting module 120 is configured to send the measurement configuration information configured by the measurement configuration information configuration module 110 to the UE 200.
  • the eNB 100 further includes a measurement result receiving module 130 and a measurement management module 140.
  • the measurement result receiving module 130 is configured to receive the measurement result sent by the UE 200.
  • the measurement management module 140 is configured to perform component carrier management and/or mobility management on the UE 200 according to the measurement result.
  • the UE 200 includes a receiving module 210, a determining module 220, a measurement evaluating module 230, and a reporting module 240.
  • the receiving module 210 is configured to receive measurement configuration information sent by the eNB 100, where the measurement configuration information includes at least a frequency point and an reporting configuration where the target cell that can be aggregated is located.
  • the determining module 220 is configured to compare the signal quality of the reference cell according to the measurement configuration information and the current aggregated cell determination measurement.
  • the measurement evaluation module 230 performs signal quality measurement on the aggregated target cell at the frequency point, and estimates the aggregated target cell according to the reporting condition in the reporting configuration based on the measurement and comparison of the signal quality of the reference cell.
  • the reporting module 240 is configured to report the measurement result to the eNB 100 when the evaluation result is that the measurement result satisfies the reporting condition in the reporting configuration.
  • the determining module 220 uses the signal quality of the cell with the best signal quality in the currently aggregated cell of the UE 200 as the signal quality of the comparison reference cell. Alternatively, the determining module 220 uses the signal quality of the current aggregated cell of the UE 200. The signal quality of the worst cell is used as a signal quality for the comparison reference cell. Alternatively, the determining module 220 uses the signal quality of the special cell in the current aggregated cell of the UE 200 as the signal quality of the comparison reference cell, and the special cell corresponds to the UE 200 to provide the security parameter input.
  • the carrier of the NAS mobility information, or the determining module 220 uses the comprehensive evaluation result of the current aggregated cell signal quality of the UE 200 as a signal quality for measuring and comparing the reference cells, for example, performing arithmetic average, weighted average, etc. on a plurality of aggregated carrier signal qualities to obtain these The comprehensive evaluation result of the carrier.
  • the reporting module 240 reports the selected measurement comparison reference cell to the eNB 100. Specifically, the reporting module 240 reports the PCI or carrier number of the selected measurement comparison reference cell to the eNB 100.
  • the measurement evaluation module 230 performs carrier management measurements and/or mobility management measurements, wherein the mobility management measurements include co-frequency mobility management measurements and inter-frequency mobility management measurements.
  • the problem that the aggregation target cell and the plurality of current aggregation cells are compared and compared can be solved, thereby solving the measurement and evaluation problem of the prior art multi-carrier system.

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Description

多载波系统的测量评估方法、 系统及装置 技术领域
本发明涉及通信技术领域， 特别涉及一种多载波系统的测量评估方 法、 系统及装置。 发明背景
在长期演进（LTE ) 系统及以前的无线通信系统中， 一个小区中只 有一个载波， 在 LTE系统中最大带宽为 20MHz, 如图 1所示， 为现有 LTE系统的 LTE小区的载波分布示意图。但是在 LTE Advanced( LTE-A ) 系统中， LTE-A系统的峰值速率比 LTE系统有巨大的提高，要求达到下 行 lGbps, 上行 500Mbps。 此时， 如果只使用一个最大带宽为 20MHz 的载波则无法达到峰值速率要求， 因此， LTE-A系统需要扩展终端可以 使用的带宽， 由此引入了载波聚合（CA, Carrier Aggregation )技术， 即 将同一个演进基站 （eNB ) 下的多个连续或不连续的载波聚合在一起， 同时为用户设备（UE )服务， 以提供所需的速率。 这些聚合在一起的载 波又称为成员载波（CC, component carrier )„ 每个小区都可以是一个成 员载波， 不同 eNB下的小区 （成员载波） 不能聚合。 为了保证 LTE系 统的 UE能在每一个聚合的载波下工作，每一个载波最大不超过 20MHz , 如图 2所示， 为现有技术中 LTE-A系统载波聚合的示意图， 该示意图中 4个成员载波聚合到一起， eNB可以同时在 4个成员载波上和 UE进行 数据传输， 以提高系统吞吐量。
然而， 由于 LTE - A系统采用多个成员载波的聚合， 而目前 LTE系 统中的测量机制没有考虑多个成员载波聚合的情况， 因此不适用于多载 波系统。 因此， 目前的多载波系统亟需一种有效的测量评估方案。 发明内容
为了解决现有技术多载波系统的测量评估问题， 本发明实施例提出 一种多载波系统的测量评估方法， 包括以下步骤： 用户设备 UE接收演 进基站 eNB发送的测量配置信息，所述测量配置信息至少包括待测量的 频点和上报配置； 所述 UE根据测量配置信息和当前聚合小区确定测量 比较参考小区的信号质量； 所述 UE对所述频点下的目标小区进行信号 质量的测量， 并以所述测量比较参考小区的信号质量为基础、 根据上报 配置对目标小区进行评估； 如果评估结果为测量的信号质量满足所述上 报配置中的上报条件， 则将测量的信号质量上报给所述 eNB。
本发明实施例还提出一种 UE, 包括接收模块、 确定模块、 测量评 估模块和上报模块。 所述接收模块， 用于接收为所述 UE服务的 eNB发 送的测量配置信息， 所述测量配置信息至少包括待测量的频点和上报配 置； 所述确定模块， 用于根据测量配置信息和当前聚合小区确定测量比 较参考小区的信号质量； 所述测量评估模块， 对所述频点下的目标小区 进行信号质量的测量， 并以所述测量比较参考小区的信号质量为基础、 根据所述上报配置对目标小区进行评估； 所述上报模块， 用于在评估结 果为测得的信号质量满足上报配置中的上报条件时， 将测得的信号质量 上报给所述 eNB。
本发明实施例还提出一种 eNB, 包括测量配置信息配置模块和发送 模块。 测量配置信息配置模块， 用于为由 eNB服务的 UE配置测量配置 信息， 所述测量配置信息至少包括多载波系统中的待测量频点和上报配 置； 所述发送模块， 用于将述测量配置信息配置模块配置的测量配置信 息发送给所述 UE,以便所述 UE根据测量配置信息和当前聚合小区对所 述频点下的目标小区进行信号质量测量和评估。
本发明实施例还提出了一种多载波系统的测量评估系统， 包括 eNB 和所述 eNB服务的至少一个 UE。 eNB, 用于向用户设备 UE发送测量 配置信息， 所述测量配置信息至少包括待测量频点和上报配置； 所述 UE,用于根据测量配置信息和当前聚合小区确定测量比较参考小区的信 号质量， 并对待测量频点下的目标小区进行信号质量的测量， 以测量比 较参考小区的信号质量为基础、 根据上报配置对目标小区进行评估， 以 及在评估结果为测量结果满足上报配置中的上报条件时将测量结果上 报给所述 eNB。
由此可见， 本发明实施例通过在多个小区中选择一个作为测量比 较参考小区，可解决可聚合的目标小区与多个当前聚合小区进行评估 比较的问题， 从而解决现有技术多载波系统的测量评估问题。
本发明附加的方面和优点将在下面的描述中部分给出， 部分将从下 面的描述中变得明显， 或通过本发明的实践了解到。 附图简要说明
本发明上述的和 /或附加的方面和优点从下面结合附图对实施例的 描述中将变得明显和容易理解， 其中：
图 1为现有 LTE系统的 LTE小区的载波分布示意图；
图 2为现有技术中 LTE-A系统载波聚合的示意图；
图 3为本发明实施例的 UE所属 eNB的示意图；
图 4为本发明实施例一的成员载波管理方法的流程图；
图 5为本发明另一实施例的 UE所属 eNB的示意图；
图 6为本发明实施例二的移动性管理的流程图；
图 7为本发明实施例的多载波系统的测量评估系统结构图。 实施本发明的方式
下面详细描述本发明的实施例， 所述实施例的示例在附图中示 出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相 同或类似功能的元件。 下面通过参考附图描述的实施例是示例性的， 仅用于解释本发明， 而不能解释为对本发明的限制。
在 LTE系统中， 对单小区的信号质量进行测量的测量机制如下： 首先， eNB使用无线资源控制 （ RRC, Radio Resource Control )连接 重配过程向 UE发送测量配置信息， 该测量配置信息包括测量对象、 上 报配置、 测量标识和其他参数。 其中， 测量对象以频点为基本单位， 每 个被配置的测量对象为一个单独频点， 拥有单独的测量对象标识（ID )。 上报配置按照触发类型可分为事件触发上报和周期触发上报， 每个上报 配置拥有单独的 ID,事件触发类型的上报配置会设置某一个事件的门限 值和满足触发条件的持续时间， 周期性触发类型的上报配置会设置周期 性触发的目的， 例如， 上报小区全局 ID ( CGI, Cell Global ID )。
目前， LTE系统内的同频 /异频测量事件， 即上报配置中携带的触发 上报的条件， 一共有五个， 包括：
1、事件（ Event ) A1 (服务小区信号质量大于门限， Serving becomes better than threshold);
2、 事件（ Event ) A2 (服务小区信号质量小于门限， Serving becomes worse than threshold);
3、 事件 （Event ) A3 (邻小区信号质量优于服务小区信号质量， Neighbor becomes offset better than serving);
4、 事件（ Event ) A4 (邻小区信号质量大于门限， Neighbor becomes better than threshold);
5、 事件（Event ) A5 (服务小区信号质量小于门限 1 , 同时邻小区信 号质量大于门限 2, Serving becomes worse than thresholdl and neighbour becomes better than threshold2)„
其中， 测量标识为单独的 ID, 可以同时连接一个测量对象与上 >¾配 置。 如果达到了测量开启门限， UE会根据测量标识的有无判断是否进 行该种测量。 其他参数还可以包括测量配置， 测量开启门限以及速度状 态参数等参数。
其次， UE根据测量配置信息的内容对小区的信号质量进行测量（同 频、 异频、 异技术）， 然后将测量结果上报给 eNB。 其中， 测量上报有 三种触发方式： 事件触发上报、 周期上报、 事件触发周期上报。 这三种 方式根据上报配置中各种参数的组合进行区分。 目前测量上报消息主要 包括： 每条测量上报消息仅能上报一个测量标识所对应的内容， 即一个 频点下满足相关上报配置的小区， 测量上报消息包含： 测量标识， 本小 区的各测量量，包括参考信号接收功率（ RSRP, Reference Signal Received Power )和参考信号接收质量（ RSRQ, Reference Signal Received Quality ), 以及满足条件的邻小区的物理层小区 ID等。 是否上报各邻小区的测量 量与 CGI取决于网络是否配置 UE上报这些信息。
具体地， UE测量上 的流程如下：
在每一个测量标识下， 分为测量评估与组织上报两个过程： a )测量评估： UE通过测量， 寻找到某个测量对象中满足上报配置 的小区， 进行评估， 当某小区在一定时间内 （ TimeToTrigger )都满足准 入条件， 则被包含在上报列表中； 一旦有新的小区进入上报列表， 就会 触发上报过程。
b )组织上报： 即填写测量上报消息的过程， 需要填写测量标识、 本小区测量信息和邻小区测量信息。 邻小区测量信息的获得过程是， 将 a )中的上报列表里包含的小区按照测量配置信息中给定的上报测量量进 行质量排序， 按从高到底的顺序填入测量上报消息。 上报测量量可以是 参考信号接收功率（RSRP )值或者参考信号接收质量 (RSRQ)值。
然而， 上述的 LTE 系统的测量机制只考虑 UE只有一个服务小区的 情况， 而多载波系统中， UE往往有多个服务小区， 因而上述测量机制不 适用于多载波系统。
有鉴于此， 本发明实施例提出了一种多载波系统的测量评估方 案。
在 LTE-A系统， 即多载波系统中， 为使得 UE总是能聚合工作在 信号质量较好的成员载波以及在 UE移动时尽量保持业务不中断， 网 络（如 eNB ) 需要在一些频点上为 UE配置测量信息， 从而使得 UE 可以利用配置的测量信息在这些频点上进行测量， 即实现了多载波 系统的测量评估方案。 根据本发明实施例， 一种多载波系统的测量评 估方法可以包括以下步骤：
用户设备 UE接收演进基站 eNB发送的测量配置信息， 所述测量配 置信息至少包括待测量的频点和上报配置；
所述 UE根据测量配置信息和当前聚合小区确定测量比较参考小区 的信号质量；
所述 UE对所述待测量的频点下的目标小区进行信号质量的测量， 并以所述测量比较参考小区的信号质量为基础、 根据所述上报配置对所 述目标小区进行评估；
如果评估结果为测量的信号质量满足所述上报配置中携带的上报 条件， 则将测量的信号质量上报给所述 eNB。
其中， eNB发送的测量配置信息中的待测量的频点下可以包括一个 或多个可聚合的目标小区。
基于这种多载波系统的测量评估方案， 网络可以进行成员载波管 理和移动性管理（例如， 切换） ， 这两种管理既可以同时实现也可以 单独实现。 在本发明的一个实施例中， 成员载波管理针对 UE当前可 聚合的小区所配置的测量信息，在某个小区信号质量变差时可对其进 行去激活操作， 并尽可能激活信号质量好的小区来为 UE提供服务。 例如，如图 3所示，为本发明实施例的 UE所属 eNB的示意图，其中， UE当前聚合工作在小区 1和 2上， 对于当前可聚合的载波频点（fl、 f2 和 f3 ) , 网络配置成员载波管理测量， 用以辅助可能的对小区 1 和 2的去激活操作和对小区 3的激活操作。在本发明的另一个实施例 中，对于不能与当前工作载波聚合的载波， eNB需要配置移动性测量， 以便进行移动性管理（例如， 切换） ， 具体来说， 如图 3所示， 小区 4和 5是 UE当前不能聚合的载波， 网络需要 UE对这两个小区进行 信号质量评估并上报， 如果 eNBl下的小区 1和小区 2由于信号质量 较差， 不能为 UE提供服务， 而 eNB2下的小区 4和小区 5信号质量 较好， 可以继续为 UE提供服务， eNB会选择将 UE从 eNB 1的小区 1和小区 2切换到 eNB2的小区 4和小区 5 , 通过多载波切换， 可以 继续载波聚合传输， 从而可以始终为 UE提供较高速率的业务。 以下 将以具体实施例的方式对本发明的成员载波管理和移动性管理进行 详细介绍。需要说明的是，由于当前 LTE-A系统中，服务小区（ serving cell ) 的定义尚未明确， 因此本发明中采用测量比较参考小区来描述 测量过程中用于和目标频点的测量进行比较时 UE当前的聚合载波所 对应的小区。 然而， 当服务小区的定义确定后， 本发明所述方法可以 根据对应关系采用服务小区的概念来描述， 当然也可以采用其他类似 的概念， 如 UE的聚合载波、 UE聚合载波对应的小区等来描述本发 明的实施例。
实施例一 在该实施例中， 将对成员载波管理进行描述。 在本实施例中， eNB可对 UE当前聚合的每个载波频点， 配置检测链路质量变差（例 如 A2事件 ) 的测量； 对 UE当前聚合载波以外的其他可聚合载波频 点， 配置检测链路质量变好 （例如， A4事件） 的测量。 图 4为本发 明实施例一的成员载波管理的流程图， 如图 4所示， 成员载波管理包 括以下步骤：
步骤 S401 , UE接收 eNB发送的测量配置信息， 发送的测量配 置信息至少包括可聚合的目标小区所在频点和上报配置。测量配置信 息还包括测量标识或其他参数。 如图 5所示， 为本发明实施例的 UE 所属 eNB的示意图。 在该实施例中， 上 配置为 eNB l为 UE在频率 fl和 f2上配置了 A2事件的测量， 为频率 f3和 f4配置了 A4事件的 测量。
步骤 S402 , UE对当前聚合小区的频点和可聚合的目标小区的频 点进行信号质量的测量，并在测得的信号质量满足上报配置中携带的 上报条件时向 eNB返回测量结果。 在图 5的示意图中， UE按照上报 配置在四个频点上进行相应的测量，并在各自频点的测量上报条件满 足时， 将测量结果上报给 eNB。
步骤 S403 , eNB根据 UE上报的测量结果进行成员载波管理， 例如对于图 5所示情况， eNB根据上报的测量结果决定是否去激活小 区 1/小区 2 , 或者激活小区 3/小区 4。
实施例二
在本发明的实施例对移动性管理进行描述。移动性管理可包括同 频移动性测量和 /或异频移动性测量两种测量方式。 在本发明的一个 实施例中， 同频移动性管理测量是指对 UE当前聚合的每个载波频点 为目标频点的测量， 其测量事件的配置可以采用与 LTE单载波系统 相同的测量事件配置方式， 也可以是 LTE-A 系统中特有的测量事件 配置方式 （如自定义的 LTE-A 系统的测量事件） ， 使用 UE 当前聚 合载波中与其同频的小区作为移动性管理测量的比较参考小区。在本 发明的一个实施例中， 异频移动性管理测量是指对 UE当前聚合载波 以外的其他可聚合载波频点为目标频点的测量，其测量事件的配置可 以采用与 LTE单载波系统相同的测量事件配置方式，也可以是 LTE- A 系统中特有的测量事件配置方式。
图 6为本发明实施例二的移动性管理的流程图。 如图 6所示， 移 动性管理包括以下步骤：
步骤 S601 , UE接收 eNB发送的测量配置信息， 测量配置信息 至少包括可聚合的目标小区所在的频点和上报配置。 其中， 测量配置 信息还可包括测量标识或其他参数。 在本发明实施例中， 对于同频移 动性管理测量和异频移动性管理测量， 上报配置具有不同的方式， 以 下将以具体实施例的方式进行详细的描述。 当然本领域技术人员能够 根据本发明的思想及以下实施例做出等同的修改或替换，这些等同的 修改或替换均应包含在本发明的保护范围之内。
步骤 S602, UE根据测量配置信息和当前聚合小区确定测量比较 参考小区的信号质量。在本发明实施例中， UE根据当前聚合小区选 择测量比较参考小区可包括：
a、 以 UE 当前聚合小区中信号质量最好的小区的信号质量作为 测量比较参考小区的信号质量； 或者，
b、 以 UE 当前聚合小区中信号质量最差的小区的信号质量作为 测量比较参考小区的信号质量； 或者，
c、 以 UE 当前聚合小区中的特殊小区的信号质量作为测量比较 参考小区的信号质量， 所述特殊小区对应 UE提供安全参数输入和非 接入结构（ NAS, Non-Access Stratum)移动性信息的载波，也可以称为 主小区； 或者，
d、 使用 UE 当前聚合小区信号质量的综合评估结果作为测量比 较参考小区的信号质量， 例如对多个聚合载波信号质量做算术平均、 加权平均等操作得到这些载波的综合评估结果。
步骤 S603 , UE对可聚合的目标小区进行测量， 并以测量比较参 考小区的信号质量为基础，根据测量事件对可聚合的目标小区进行评 估。 例如， 假设测量事件是 A3事件， 那么就按照 A3来评估可聚合 的目标小区的信号质量是否比测量比较参考小区的信号质量强很多， 如果评估结果是测量结果满足了 A3的不等式条件， 则触发测量上报 过程。 对于上面的 a, b和 c方案， 测量事件中可能涉及到的测量比较 参考小区的偏移 （offset ) 值可以使用被选为测量比较参考小区所对 应的偏移值， 对于方案 d, 测量事件中可能涉及到的测量比较参考小 区的偏移值可以是 UE当前多个聚合载波上偏移值的综合评估结果， 例如算术平均或加权平均。
步骤 S604, 根据评估结果和上报配置判断测量结果是否满足上 报配置中携带的上报条件， 如果满足上报条件则将测量结果上报给 eNB , eNB根据测量结果对 UE进行移动性管理。 对于上面的方案 a 和 b, 由于 eNB不知道 UE确定的测量比较参考小区， 因此 UE还可 以上报选定的测量比较参考小区信息给 eNB ,例如上报该测量比较参 考小区的 PCI信息或载波编号信息。
为了能够对本发明有比较清楚的理解，以下还是以图 5所示的示 意图为例对移动性管理测量进行描述。
实施例三
本实施例描述了同频移动性管理测量。 在本实施例中， eNBl通 过 RRC信令对 UE进行了同频移动性管理测量配置， 例如， 在频率 fl和 f2上配置了 A3事件的测量。 UE在目标频点 fl上的测量使用当 前聚合的小区 1作为测量比较参考小区， 来评估目标频点上小区（例 如小区 5 )的信号质量， 在目标频点 f2上的测量使用当前聚合的小区 2作为测量比较参考小区， 来评估目标频点上小区 （例如小区 6 ) 的 信号质量。 在频点 fl和 f2上一旦满足了测量上报条件， 则上报相应 的测量结果给网络。
实施例四
本发明实施例描述异频移动性测量，并选择信号质量最好的当前 聚合小区作为测量比较参考小区。
在本发明实施例中， eNBl通过 RRC信令对 UE进行了异频移动 性管理测量配置， 例如在频率 f3和 f4上配置了 A5事件的测量。 UE 测到 （例如， 根据配置的成员载波管理 （ CC management ) 测量或者 协议预先规定）当前小区 1的信号质量最好， 则使用小区 1作为异频 移动性管理测量的比较参考小区。 关于 UE侧信号质量最好小区的测 量， 可以选择在一定时间内某个小区的信号质量一直优于其他小区， 测量相关参数（比较时间 /比较量）可以网络配置也可以 UE自主决定 或者协议规定， 例如比较量可以选择为 RSRP/RSRQ/CQI等； 另一种 选择是比较瞬时的信号质量来选择信号质量最好的小区。 UE在目标 频点 f3上的测量使用小区 1作为测量比较参考小区来评估该目标频 点上小区（例如小区 7 )的信号质量， 在目标频点 f4上的测量也使用 小区 1作为测量比较参考小区来评估该目标频点上小区（例如小区 8 ) 的信号质量。 在频点 f3和 f4上一旦测量结果满足了测量上报条件， 则上报相应的测量结果给 eNBl , 也可以同时携带小区 1的标识， 如 PCI或者载波编号。 实施例五
本实施例描述异频移动性管理测量，并选择信号质量最差的当前 聚合小区作为测量比较参考小区。
本实施例中， eNBl通过 RRC信令对 UE进行了异频移动性管理 测量配置，例如在频率 f 3和 f4上配置了 A5事件的测量。 UE测到（例 如， 根据配置的 CC management测量或者协议预先规定） 当前小区 2 的信号质量最差，则使用小区 2作为异频移动性管理测量的比较参考 频点。 关于 UE侧信号质量最差小区的测量， 可以选择在一定时间内 某个小区的信号质量一直低于其他小区， 测量相关参数 （比较时间 / 比较量）可以网络配置也可以 UE自主决定或者协议规定， 例如比较 量可以选择为 RSRP/RSRQ/CQI等； 另一种选择是比较瞬时的信号质 量来选择信号质量最差的小区。 UE在目标频点 f3上的测量使用小区 2作为测量比较参考小区来评估该目标频点上小区 （例如小区 7 ) 的 信号质量， 在目标频点 f4上的测量也使用小区 2作为测量比较参考 小区来评估该目标频点上小区 （例如小区 8 ) 的信号质量。 在频点 f3 和 f4上测量结果一旦满足了测量上报条件， 则上报相应的测量结果 给 eNBl , 也可以同时携带小区 2的标识， 如 PCI或者载波编号。
实施例六
本实施例描述异频移动性管理测量，并选择特殊小区作为测量比 较参考小区
在本实施例中， eNBl通过 RRC信令对 UE进行了异频移动性管 理测量配置， 例如在频率 f3和 f4上配置了 A5事件的测量。 如果 UE 当前工作的特殊小区为小区 1 , 则使用小区 1作为异频移动性测量的 比较参考小区。 UE当前工作的特殊小区可以由网络配置。 UE在目标 频点 f3上的测量使用小区 1作为测量比较参考小区来评估该目标频 点上小区（例如小区 7 )的信号质量， 在目标频点 f4上的测量也使用 小区 1作为测量比较参考小区来评估该目标频点上小区（例如小区 8 ) 的信号质量。 在频点 f3和 f4上一旦满足了测量上报条件， 则上报相 应的测量结果给 eNB l。
实施例七
本发明实施例描述异频移动性管理测量， 并选择 UE当前聚合所 有小区信号质量的综合评估结果作为测量比较参考小区的信号质量。
本发明实施例中， eNB l通过 RRC信令对 UE进行了异频移动性 管理测量配置， 例如在频率 f3和 f4上配置了 A5事件的测量。 UE测 到（例如， 根据配置的 CC management测量或者协议预先规定）当前 聚合的小区 1和小区 2的信号质量，则把二者的信号质量做算术平均 作为测量比较参考小区的信号质量。 UE在目标频点 f3上的测量使用 该等效的测量比较参考小区的信号质量来评估该目标频点上小区（例 如小区 7 )的信号质量， 在目标频点 f4上的测量也使用该等效的测量 比较参考小区的信号质量来评估该目标频点上小区 （例如小区 8 ) 的 信号质量。 在频点 f3和 f4上一旦测量结果满足了测量上报条件， 则 上报相应的测量结果给 eNB 1。
图 7为本发明实施例的多载波系统的测量评估系统结构图。如图 7所示，该系统包括 eNB 100和 eNB 100服务的至少一个 UE 200。 eNB 100用于向 UE 200发送测量配置信息， 其中， 发送的测量配置信息 至少包括可聚合的目标小区所在的频点和上报配置。 UE 200用于根 据测量配置信息和当前聚合小区确定测量比较参考小区的信号质量， 并对所述频点下的目标可聚合的小区进行测量，以测量比较参考小区 的信号质量为基础对可聚合的目标小区进行评估，以及根据评估结果 和上报配置判断测量结果是否满足上报配置中携带的上报条件，如果 满足上报条件则将测量结果上报给 eNB 100。
其中， eNB 100包括测量配置信息配置模块 110和发送模块 120。 测量配置信息配置模块 110用于为 UE 200配置测量配置信息， 测量 配置信息至少包括可聚合的目标小区所在的频点和上报配置。发送模 块 120用于将测量配置信息配置模块 110配置的测量配置信息发送给 UE 200。
在本发明的一个实施例中， eNB 100 还包括测量结果接收模块 130和测量管理模块 140。 测量结果接收模块 130用于接收 UE 200 发送的测量结果。 测量管理模块 140用于根据测量结果对 UE 200进 行成员载波管理和 /或移动性管理。
其中， UE 200包括接收模块 210、 确定模块 220、 测量评估模块 230和上报模块 240。 接收模块 210用于接收 eNB 100发送的测量配 置信息，该测量配置信息至少包括可聚合的目标小区所在的频点和上 报配置。确定模块 220用于根据测量配置信息和当前聚合小区确定测 量比较参考小区的信号质量。测量评估模块 230对所述频点下的可聚 合的目标小区进行信号质量测量，并以测量比较参考小区的信号质量 为基础，根据所述上报配置中的上报条件对可聚合的目标小区进行评 估。上报模块 240用于在评估结果为测量结果满足上报配置中的上报 条件时， 将测量结果上报给 eNB 100。
在本发明的一个实施例中， 确定模块 220以 UE 200当前聚合小 区中信号质量最好的小区的信号质量作为测量比较参考小区的信号 质量； 或者， 确定模块 220以 UE200 当前聚合小区中信号质量最差 的小区的信号质量作为测量比较参考小区的信号质量； 或者， 确定模 块 220以 UE200 当前聚合小区中的特殊小区的信号质量作为测量比 较参考小区的信号质量， 特殊小区对应 UE200提供安全参数输入和 NAS移动性信息的载波， 或者； 确定模块 220使用 UE200当前聚合 小区信号质量的综合评估结果作为测量比较参考小区的信号质量，例 如对多个聚合载波信号质量做算术平均、加权平均等操作得到这些载 波的综合评估结果。
在本发明的一个实施例中，上报模块 240将选定的测量比较参考 小区上报给 eNB 100。 具体地， 上报模块 240将选定的测量比较参考 小区的 PCI或载波编号上报给 eNB100。
在本发明的一个实施例中，测量评估模块 230进行载波管理测量 和 /或移动性管理测量， 其中移动性管理测量包括同频移动性管理测 量和异频移动性管理测量。
本发明实施例通过在多个小区中选择一个作为测量比较参考小 区，可解决可聚合的目标小区与多个当前聚合小区进行评估比较的问 题， 从而解决现有技术多载波系统的测量评估问题。
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡 在本发明的精神和原则之内所做的任何修改、 等同替换和改进等， 均应 包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种多载波系统的测量评估方法， 其特征在于， 包括以下步骤： 用户设备 UE接收演进基站 eNB发送的测量配置信息， 所述测量配 置信息至少包括待测量的频点和上报配置；
所述 UE根据测量配置信息和当前聚合小区确定测量比较参考小区 的信号质量；
所述 UE对所述待测量的频点下的目标小区进行信号质量的测量， 并以所述测量比较参考小区的信号质量为基础、 根据所述上报配置对所 述目标小区进行评估；
如果评估结果为测量的信号质量满足所述上报配置中携带的上报条 件， 则将测量的信号质量上报给所述 eNB。
2、 如权利要求 1所述的多载波系统的测量评估方法， 其特征在于， 所述 UE根据当前聚合小区选择测量比较参考小区包括：
选择所述 UE当前聚合小区中信号质量最好的小区的信号质量作为 测量比较参考小区的信号质量； 或者，
选择所述 UE当前聚合小区中信号质量最差的小区的信号质量作为 测量比较参考小区的信号质量； 或者，
选择所述 UE当前聚合小区中的特殊小区的信号质量作为测量比较 参考小区的信号质量， 所述特殊小区对应 UE提供安全参数输入和 NAS 移动性信息的载波， 或者；
使用所述 UE当前聚合小区信号质量的综合评估结果作为测量比较 参考小区的信号质量。
3、 如权利要求 2所述的多载波系统的测量评估方法， 其特征在于， 还包括： 所述 UE将选定的测量比较参考小区上报给所述 eNB。
4、 如权利要求 3所述的多载波系统的测量评估方法， 其特征在于， 所述 UE将选定的测量比较参考小区上报给所述 eNB包括：
所述 UE将选定的测量比较参考小区的 PCI或载波编号上报给所述 cNB。
5、 如权利要求 2所述的多载波系统的测量评估方法， 其特征在于， 如果使用所述 UE当前聚合小区信号质量的综合评估结果作为测量 比较参考小区的信号质量， 测量比较参考小区的偏移值为当前聚合小区 对应偏移值的综合结果。
6、如权利要求 1或 2所述的多载波系统的测量评估方法，其特征在 于， 还包括： 根据所述上报配置进行成员载波管理测量。
7、 如权利要求 6所述的多载波系统的测量评估方法， 其特征在于， 所述上报配置包括：
所述 eNB对所述 UE当前聚合的每个小区配置监测信号质量变差的 事件， 并对所述 UE的目标小区配置监测信号质量变好的事件。
8、 如权利要求 1、 2或 6所述的多载波系统的测量评估方法， 其特 征在于， 还包括：
进行移动性管理测量。
9、 如权利要求 8所述的多载波系统的测量评估方法， 其特征在于， 所述移动性管理测量为同频移动性管理测量， 所述当前聚合的每个小区 的频点和目标小区的频点相同， 所述上报配置包括对所述 UE当前聚合 的每个小区配置同频测量事件。
10、如权利要求 8所述的多载波系统的测量评估方法，其特征在于， 所述移动性管理测量为异频移动性管理测量， 所述当前聚合的每个小区 的频点和目标小区的频点不同， 所述上报配置包括对所述 UE当前聚合 的每个小区配置异频测量事件。
11、 一种用户设备 UE, 位于多载波系统中， 其特征在于， 包括接 收模块、 确定模块、 测量评估模块和上报模块，
所述接收模块， 用于接收为所述 UE服务的 eNB发送的测量配置信 息， 所述测量配置信息至少包括待测量的频点和上报配置；
所述确定模块， 用于根据测量配置信息和当前聚合小区确定测量比 较参考小区的信号质量；
所述测量评估模块， 对所述待测量的频点下的目标小区进行信号质 量的测量， 并以所述测量比较参考小区的信号质量为基础、 根据所述上 报配置对所述目标小区进行评估；
所述上报模块， 用于在评估结果为测得的信号质量满足所述上报配 置中的上报条件时， 将测得的信号质量上报给所述 eNB。
12、 如权利要求 11所述的 UE, 其特征在于， 所述确定模块以所述 UE 当前聚合小区中信号质量最好的小区的信号质量作为测量比较参考 小区的信号质量； 或者，
所述确定模块以所述 UE当前聚合小区中信号质量最差的小区的信 号质量作为测量比较参考小区的信号质量； 或者，
所述确定模块以所述 UE当前聚合小区中的特殊小区的信号质量作 为测量比较参考小区的信号质量， 所述特殊小区对应 UE提供安全参数 输入和 NAS移动性信息的载波， 或者；
所述确定模块使用所述 UE当前聚合小区信号质量的综合评估结果 作为测量比较参考小区的信号质量。
13、 如权利要求 11或 12所述的 UE, 其特征在于， 所述上报模块 还用于将确定的测量比较参考小区上报给所述 eNB。
14、 如权利要求 13所述的 UE, 其特征在于， 所述上报模块将选定 的测量比较参考小区的 PCI或载波编号上报给所述 eNB。
15、 如权利要求 11或 12所述的 UE, 其特征在于， 所述测量评估 模块进行载波管理测量和 /或移动性管理测量。
16、 如权利要求 15所述的 UE, 其特征在于， 所述移动性管理测量 包括同频移动性管理测量和异频移动性管理测量。
17、 一种多载波系统中的 eNB, 其特征在于， 包括测量配置信息配 置模块和发送模块，
所述测量配置信息配置模块， 用于为由所述 eNB服务的 UE配置测 量配置信息， 所述测量配置信息至少包括多载波系统中待测量的频点和 上报配置；
所述发送模块， 用于将述测量配置信息配置模块配置的测量配置信 息发送给所述 UE,以便所述 UE根据测量配置信息和当前聚合小区对所 述频点下的目标小区进行信号质量测量和评估。
18、 如权利要求 17所述的 eNB, 其特征在于， 还包括测量结果接 收模块和测量管理模块，
所述测量结果接收模块， 用于接收所述 UE发送的信号质量的测量 结果；
所述测量管理模块， 用于根据测量结果对所述 UE进行成员载波管 理和 /或移动性管理。
19、 一种多载波系统的测量评估系统， 其特征在于， 包括 eNB和所 述 eNB服务的至少一个 UE,
所述 eNB, 用于向用户设备 UE发送测量配置信息， 所述测量配置 信息至少包括待测量的频点和上报配置；
所述 UE, 用于根据测量配置信息和当前聚合小区确定测量比较参 考小区的信号质量， 并对所述待测量的频点下的目标小区进行信号质量 的测量， 以所述测量比较参考小区的信号质量为基础、 根据所述上报配 置所述目标小区进行评估， 以及在评估结果为测量结果满足所述上报配 置中的上报条件时将测量结果上报给所述 eNB。
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