CN105611567A - Method, system and equipment for triggering spectrum sensing measurement and report - Google Patents

Abstract

The present invention proposes a method, system and device for triggering spectrum sensing measurement and reporting, which are suitable for long-term evolution (LTE) systems supporting frequency sensing, wherein the method includes: the base station sends sensing measurement configuration parameters to user equipment, and the sensing measurement configuration The parameters include the configuration of the sensing measurement object and the configuration of the reporting of the sensing measurement; the configuration of the sensing measurement object includes the sensing measurement frequency, the specific frequency offset of the frequency, and the specific frequency offset of the cell; the sensing measurement frequency is a frequency that allows spectrum sharing The used Evolved Universal Terrestrial Radio Access (EUTRA) frequency or different system frequency; the sensing measurement report configuration includes the type of triggering sensing measurement reporting; the user equipment performs the sensing measurement process according to the sensing measurement configuration parameters and reports to the base station Perceived measurement results. The invention can improve the spectrum sensing measurement mechanism based on the LTE system.

Description

Method, system and device for triggering spectrum sensing measurement and reporting

technical field

The present invention relates to the technical field of Long Term Evolution (LTE, LongTerm Evolution) system measurement report triggering, in particular to a method, system and device for triggering spectrum sensing measurement and report.

Background technique

With the rapid development of global mobile broadband communications, mobile data traffic is increasing dramatically. Frequency is the basic resource for the development of mobile communications, and its demand is also increasing accordingly. The existing frequency division can no longer meet the future development of mobile communications. Spectrum resources are increasingly scarce, and some frequency bands still use the early frequency point allocation method, the efficiency of spectrum use is low, and spectrum resources are not fully utilized. Spectrum sharing is an effective way to improve spectrum efficiency and one of the ways to alleviate the spectrum shortage in current mobile communication systems. Introducing spectrum sensing technology into the LTE system, allowing the LTE system to realize effective utilization of spectrum resources through spectrum sharing, is currently one of the research hotspots in various countries and standards organizations.

For an LTE system that supports spectrum sensing, the base station and the terminal may experience different levels of uplink and downlink interference on the same frequency point. The pure base station spectrum sensing result or the spectrum sensing result reported by the terminal cannot correctly reflect the use of the frequency point. The base station and the terminal cooperate to perform spectrum sensing. Figure 1 is a schematic diagram of the sensing range of the base station and terminal in the LTE system. In Figure 1, eNBA and eNBB are not within the coverage of each other and cannot be measured, while UEA and UEB are covered by each other.

In the existing LTE system, in a radio resource control (RRC, RadioResourceControl) connected state, the base station sends measurement configuration parameters to the terminal through dedicated signaling. The terminal executes the measurement process according to the measurement configuration parameters, and judges that the measurement results meet the conditions for triggering measurement reporting according to the reporting configuration indicated by the base station. If measurement reporting is triggered, the terminal reports a measurement report to the base station. The base station performs handover decision or carrier management according to the measurement result of the terminal.

Currently, the LTE system measurement report trigger methods defined in the 3GPP standard mainly include event trigger, periodic trigger and some special measurement report trigger mechanisms.

Event triggering includes 6 types of measurement events used in the LTE system and 2 types of measurement events used in different systems, as follows:

For measurement events inside the LTE system:

(1) Event A1: Serving becomes better than threshold (Serving becomes better than threshold).

(2) Event A2: The measurement result of the serving carrier frequency is lower than the threshold value (Serving becomes worse than threshold).

(3) Event A3: The neighbor frequency measurement result is higher than the PCell measurement result by an offset (NeighbourbecomesoffsetbetterthanPCell).

(4) Event A4: Neighbor becomes better than threshold (Neighbourbecomesbetterthanthreshold);

Entry condition: adjacent frequency measurement result after offset and hysteresis parameter correction > threshold value

Mn+Ofn+Ocn-Hys>Thresh (Formula 1)

Leaving condition: the adjacent frequency measurement result after offset and hysteresis parameter correction <threshold value

Mn+Ofn+Ocn+Hys<Thresh (Formula 2)

Among them, Mn is the measurement result of the adjacent frequency, Ofn is the specific offset of the adjacent frequency, Ocn is the specific offset of the adjacent frequency cell, and Hys is the hysteresis parameter of the event. The values of Ofn, Ocn and Hys are configured by eNB.

When the above entry conditions are satisfied, the UE reports the measurement result to the eNB.

(5) Event A5: the PCell measurement result is lower than the threshold value 1, while the adjacent frequency measurement result is higher than the threshold value 2 (PCell becomes worse than threshold1 and neighbor becomes better than threshold2).

(6) Event A6: The neighbor frequency measurement result is higher than the SCell measurement result by an offset (NeighbourbecomesoffsetbetterthanSCell).

Measurement events for different systems:

(1) Event B1: InterRAT neighbor becomes better than threshold (InterRATneighbourbecomes betterthanthreshold);

Entry condition: After offset and hysteresis parameter correction, the measurement result of the adjacent frequency of the different system>threshold value

Mn+Ofn-Hys>Thresh (Formula 3)

Leaving condition: After offset and hysteresis parameter correction, the measurement result of the adjacent frequency of the different system < the threshold value

Mn+Ofn+Hys<Thresh (Formula 4)

Among them, Mn is the measurement result of the adjacent frequency of the different system, Ofn is the specific offset of the frequency of the adjacent frequency of the different system, and Hys is the hysteresis parameter of the event. The values of Ofn and Hys are configured by eNB.

When the entry condition is satisfied, the UE reports the measurement result to the eNB.

(2) Event B2: The PCell measurement result is lower than the threshold value 1, while the adjacent frequency measurement result of the different system is higher than the threshold value 2 (PCellbecomesworsethanthreshold1andinterRATneighbourbecomesbetterthanthreshold2)

The periodic trigger measurement report mainly includes: "reportCGI" is used to instruct the UE to obtain the system information of the relevant cell; "reportStrongestCells" and "reportStrongestCellsForSON" are used to instruct the UE to measure the cell with the strongest signal on the specified frequency. In addition, some special measurement reporting trigger mechanisms are defined in the LTE system, mainly including "ue-RxTxTimeDiffPeriodical", which is used to instruct the UE to measure the time difference between sending and receiving of the primary serving cell PCell, and assist the eNB to realize the positioning function.

In addition, in order to reduce the energy consumption caused by frequent measurements on the UE side, the LTE system defines an optional configurable threshold value "s-measure", except for the periodic trigger measurement report "reportCGI", the special measurement "ue-RxTxTimeDiffPeriodical", and the Except for the measurement of the serving cell, other measurements are limited by the s-measure. If s-measure is configured, only when the measurement result of the primary serving cell PCell is lower than s-measure, the measurement of other neighboring cells/frequency will be started.

The mechanism of triggering measurement reporting in the existing LTE system is mainly designed to ensure that the eNB performs reasonable carrier management or handover decisions in different scenarios, and its essence is to expect cells with better signal quality to be detected. After the spectrum sensing is introduced in the LTE system, since the uplink and downlink interference levels of the base station and the terminal on the same frequency point may be different, the base station and the terminal need to coordinate sensing. The main purpose of spectrum sensing measurement on the UE side is to detect whether certain (some) segments of spectrum or certain (some) frequency points are available, and its essence is to detect clean spectrum that is not occupied by other systems. Therefore, based on the existing triggering measurement reporting mechanism of the LTE system, the UE cannot complete the spectrum sensing measurement, and the measurement mechanism of the LTE system needs to be enhanced.

Contents of the invention

The invention provides a method for triggering spectrum sensing measurement and reporting, which is suitable for an LTE system supporting frequency sensing and can improve the spectrum sensing measurement mechanism based on the LTE system.

The present invention also provides a system and device for triggering spectrum sensing measurement and reporting, which is adapted to the LTE system supporting frequency sensing and can improve the spectrum sensing measurement mechanism based on the LTE system.

Technical scheme of the present invention is realized like this:

A method for triggering spectrum sensing measurement and reporting, the method is adapted to an LTE system supporting frequency sensing, the method comprising:

The base station sends a sensing measurement configuration parameter to the user equipment, where the sensing measurement configuration parameter includes a sensing measurement object configuration and a sensing measurement reporting configuration; the sensing measurement object configuration includes a sensing measurement frequency, a frequency-specific frequency offset, and a cell-specific Frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes the type of triggering sensing measurement reporting;

The user equipment performs a sensing measurement process according to the sensing measurement configuration parameters and reports a sensing measurement result to the base station.

A system for triggering spectrum sensing measurement and reporting, the system is adapted to an LTE system supporting frequency sensing, the system includes:

The base station is configured to send a sensing measurement configuration parameter to the user equipment, where the sensing measurement configuration parameter includes a sensing measurement object configuration and a sensing measurement reporting configuration; the sensing measurement object configuration includes a sensing measurement frequency, a frequency offset specific to the frequency, and A cell-specific frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes a type that triggers sensing measurement reporting;

The user equipment is configured to perform a sensing measurement process according to the sensing measurement configuration parameters and report a sensing measurement result to the base station.

A base station for triggering spectrum sensing measurement and reporting, the base station is adapted to an LTE system supporting frequency sensing, and the base station includes:

A sensing measurement configuration module, configured to send sensing measurement configuration parameters to the user equipment, where the sensing measurement configuration parameters include a sensing measurement object configuration and a sensing measurement reporting configuration; the sensing measurement object configuration includes a sensing measurement frequency, a specific frequency offset of the frequency Shift and cell-specific frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes triggering the sensing measurement reporting type;

The perception measurement result receiving module is configured to receive the perception measurement result reported by the user equipment according to the perception measurement configuration parameters.

A user equipment that implements spectrum sensing measurement and reporting, the user equipment is adapted to an LTE system that supports frequency sensing, including:

The sensing measurement configuration receiving module is configured to receive the sensing measurement configuration parameters from the base station, the sensing measurement configuration parameters include the sensing measurement object configuration and the sensing measurement reporting configuration; the sensing measurement object configuration includes the sensing measurement frequency, the frequency specific to the frequency Offset and cell-specific frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes triggering the sensing measurement reporting type;

A perception measurement and reporting module, configured to perform perception measurement according to the configuration parameters of the perception measurement and report the perception measurement result.

It can be seen that the method, system and device for triggering spectrum sensing measurement and reporting proposed by the present invention ensure that the UE with sensing measurement capability can perform spectrum sensing measurement according to the instructions of the eNB, and report the sensing measurement results that meet the conditions to the eNB in time, assisting The eNB performs spectrum management, which solves the triggering and reporting problems of LTE system perception measurement, and ensures the reasonable sharing and effective utilization of spectrum resources.

Description of drawings

FIG. 1 is a schematic diagram of the sensing range of a base station and a terminal in an LTE system;

Fig. 2 is the implementation flow chart of the method for triggering spectrum sensing measurement and reporting proposed by the present invention;

Fig. 3 is a flow chart of realization of scheme 1 of perception measurement triggering and reporting;

Fig. 4 is a flow chart of realizing the second solution of sensing measurement triggering and reporting;

Fig. 5 is a flow chart of realizing the third solution of sensing measurement triggering and reporting;

Fig. 6 is a flow chart of realizing the fourth solution of sensing measurement triggering and reporting.

detailed description

The present invention proposes a method for triggering spectrum sensing measurement and reporting, which is suitable for an LTE system supporting frequency sensing, as shown in Figure 2 as a flow chart for the implementation of the method, including:

Step 201: The base station sends the sensing measurement configuration parameters to the user equipment, the sensing measurement configuration parameters include the sensing measurement object configuration and the sensing measurement reporting configuration; the sensing measurement object configuration includes the sensing measurement frequency, the frequency specific frequency offset and A cell-specific frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes a type that triggers sensing measurement reporting;

Step 202: The user equipment performs a sensing measurement process according to the sensing measurement configuration parameters and reports a sensing measurement result to the base station.

The invention aims at the LTE system supporting spectrum sensing, and solves the problem of triggering and reporting of UE side sensing measurement. The specific plan is as follows:

(1) The measurement mechanism to ensure that the network side obtains the perceived frequency situation in a timely manner

The eNB instructs the UE capable of sensing measurement to perform sensing measurement through an RRC connection reconfiguration message. In order to ensure that the network side can obtain the use of the sensing frequency in a timely manner and perform reasonable spectrum management, the measurement of the sensing frequency by the UE is not affected by the signal quality of the primary serving cell PCell. That is, no matter whether the PCell measurement result of the primary serving cell is lower than the eNB-configured threshold value (s-measure), the UE performs periodic sensing measurement on the specified frequency according to the eNB instruction, and detects the energy or received signal of the specified frequency. (depending on the eNB configuration), and judge whether the sensing measurement results (eg based on signal energy or signal quality, etc.) meet the measurement reporting conditions (eg, the sensing measurement triggering and reporting mechanism provided by the present invention). If the reporting conditions are met, the UE reports the measurement report to the eNB.

(2) Triggering and reporting of perception measurement

Option One

Event trigger mode, expanding the existing A4 event (the measurement result of the adjacent frequency is higher than the threshold value) and B1 event (the measurement result of the adjacent frequency of the different system is higher than the threshold value), when the sensing measurement result meets the entry condition of A4 event or B1 event When, the measurement report is triggered; optionally, when the measurement result meets the leaving condition of the A4 event or the B1 event, that is, when the measurement result is lower than the threshold value, the measurement report is triggered. Add IE "a4-reportOnLeave" in the information element (IE, InformationElement) ReportConfigEUTRA and set it as optional; add IE "b1-reportOnLeave" in IEReportConfigInterRAT and set it as optional.

When the sensing measurement frequency configured by the eNB for the UE is the Evolved Universal Terrestrial Radio Access (EUTRA) frequency, the corresponding reporting configuration is an A4 event. Optionally, when the measurement result meets the A4 event leaving condition, the measurement reporting is triggered. When the sensing measurement frequency configured by the eNB for the UE is an inter-system frequency, the corresponding reporting configuration is a B1 event. Optionally, when the measurement result meets the leaving condition of the B1 event, measurement reporting is triggered.

The measurement result of the UE for the perceived frequency refers to the detection result based on the received signal energy or signal quality (depending on the configuration of the eNB), and the adjacent frequency-specific offset Ofn configured by the eNB, the specific offset of the adjacent frequency cell The corrected result of the offset Ocn and the hysteresis parameter Hys of the event.

Specifically, in the above step 201, when the sensing measurement frequency is an EUTRA frequency that is allowed to be used for spectrum sharing;

The perception measurement report configuration may be: when the measurement result of the EUTRA frequency corrected by the offset and hysteresis parameters is higher than the preset threshold value (ie Mn+Ofn+Ocn-Hys>Thresh), report the measurement result and, when the measurement result of the EUTRA frequency after offset and hysteresis parameter correction changes from higher than the preset threshold value to lower than the preset threshold value (that is, Mn+Ofn+Ocn+Hys< Thresh), report the measurement result;

Wherein, Mn is the measurement result of the EUTRA frequency, Ofn is the specific offset of the EUTRA frequency, Ocn is the specific offset of the EUTRA frequency cell, Hys is the hysteresis parameter of the event, and Thresh is a preset threshold.

Alternatively, in the above step 201, when the sensing measurement frequency is an inter-system frequency that is allowed to be used for spectrum sharing;

The sensory measurement report configuration may be: when the measurement result of the different system frequency corrected by the offset and the hysteresis parameter is higher than the preset threshold value (ie Mn+Ofn-Hys>Thresh), report the measurement result; And, when the measurement result of the different system frequency after being corrected by the offset and hysteresis parameters changes from higher than the preset threshold value to lower than the preset threshold value (that is, Mn+Ofn+Hys<Thresh) , report the measurement results;

Wherein, Mn is the measurement result of the frequency of the different system, Ofn is the specific offset of the frequency of the different system, Hys is the hysteresis parameter of the event, and Thresh is the preset threshold value.

As shown in FIG. 3 , the specific process is described by taking the EUTRA frequency as an example for sensing measurement frequency. Wherein, the selection of the threshold depends on the implementation of the eNB algorithm, and different thresholds may be set for different sensing measurement frequencies. Figure 3 includes the following steps:

Step 301: The eNB configures the sensing measurement frequencies f ₁ and f ₂ for the UE through the RRC connection reconfiguration message, and configures the reporting configuration as an A4 event, and at the same time sets that when the leaving condition of the A4 event is met, the measurement reporting is triggered.

Step 302: UE performs sensing measurement, and the f ₁ measurement result is higher than the threshold value, which meets the A4 event entry condition, and triggers measurement reporting. If the f2 measurement result is lower _than the threshold value, the A4 event entry condition is not met, and measurement reporting is not triggered.

Step 303: UE sends _a measurement report message, and feeds back the f1 measurement result to the eNB.

Step 304: The eNB judges the measurement result reported by the UE, and judges that f ₂ is available and f ₁ is not available.

Step 305: UE performs perception measurement, and the f ₁ measurement result is lower than the threshold value, which meets the A4 event leaving condition, and triggers measurement reporting. If the measurement result of f2 is higher _than the threshold value, the A4 event entry condition is met, and the measurement report is triggered.

Step 306: UE sends _a measurement report message, and feeds back the f1 measurement result and _f2 measurement result to the eNB.

Step 307: The eNB judges the measurement result reported by the UE, and judges that f ₁ is available and f ₂ is not available.

Solution 1 can solve the problem of triggering and reporting the perception measurement, and can be used to exit the perception frequency. However, when the multiple configured sensing measurement frequencies do not meet the A4 event entry condition, the UE will not report the specific measurement results to the eNB, and the eNB can determine that the sensing frequencies are available, but cannot compare the specific measurement results of multiple available frequencies.

Option II

Event trigger mode, define new event A7 and event B3. The specific definition is as follows:

Event A7: The neighbor frequency measurement result is lower than the threshold (Neighbourbecomesworsethanthreshold);

Entry condition: adjacent frequency measurement result after offset and hysteresis parameter correction <threshold value

Mn+Ofn+Ocn+Hys<Thresh (Formula 5)

Leaving condition: adjacent frequency measurement result after offset and hysteresis parameter correction > threshold value

Mn+Ofn+Ocn-Hys>Thresh (Formula 6)

Among them, Mn is the measurement result of the adjacent frequency, Ofn is the specific offset of the adjacent frequency, Ocn is the specific offset of the adjacent frequency cell, and Hys is the hysteresis parameter of the event. The values of Ofn, Ocn and Hys are configured by eNB.

The measurement object corresponding to the event A7 is the sensing measurement frequency configured by the eNB, which is the EUTRA frequency that is allowed to be used for spectrum sharing.

Event B3: InterRAT neighbor becomes worse than threshold (InterRATneighbourbecomes worsethanthreshold);

Entry condition: After offset and hysteresis parameter correction, the measurement result of the adjacent frequency of the different system<threshold value

Mn+Ofn+Hys<Thresh (Formula 7)

Leaving condition: After offset and hysteresis parameter correction, the measurement result of the adjacent frequency of the different system>threshold value

Mn+Ofn-Hys>Thresh (Formula 8)

Among them, Mn is the measurement result of the adjacent frequency of the different system, Ofn is the specific offset of the frequency of the adjacent frequency of the different system, and Hys is the hysteresis parameter of the event. The values of Ofn and Hys are configured by eNB.

The measurement object corresponding to the event B3 is the sensing measurement frequency configured by the eNB, which is an inter-RAT (InterRAT) frequency that is allowed to be used for spectrum sharing.

When the sensing measurement result of the UE satisfies the A7 event or B3 event entry condition, the measurement report is triggered.

The results of perception measurement are very time-sensitive. When the signal strength on a certain frequency increases significantly, the frequency is no longer available, and the main system on this frequency may start to work. At this time, the LTE system needs to release the frequency in time to avoid harmful interference to the main system. Therefore, when the measurement result of a certain frequency is significantly higher than the threshold value, the UE needs to report the measurement result in time. Considering the above factors, on the basis of defining new events A7 and B3, it is optional to set when the measurement result meets the leaving condition of A7 event or B3 event, that is, when the measurement result is higher than the threshold value, the measurement report is triggered.

The measurement result of the UE for the perceived frequency refers to the detection result based on the received signal energy or signal quality (depending on the configuration of the eNB), and the adjacent frequency-specific offset Ofn configured by the eNB, the specific offset of the adjacent frequency cell The corrected result of the offset Ocn and the hysteresis parameter Hys of the event.

Specifically, in the above step 201, when the sensing measurement frequency is an EUTRA frequency that is allowed to be used for spectrum sharing;

The perception measurement report configuration may be: when the measurement result of the EUTRA frequency corrected by the offset and hysteresis parameters is lower than the preset threshold value (that is, Mn+Ofn+Ocn+Hys<Thresh), report the measurement result ;

The sensory measurement reporting configuration may further include: when the measurement result of the EUTRA frequency corrected by the offset and hysteresis parameters changes from being lower than a preset threshold value to being higher than a preset threshold value (Mn+Ofn +Ocn-Hys>Thresh), report the measurement results;

Wherein, Mn is the measurement result of the EUTRA frequency, Ofn is the specific offset of the EUTRA frequency, Ocn is the specific offset of the EUTRA frequency cell, Hys is the hysteresis parameter of the event, and Thresh is a preset threshold.

Alternatively, in the above step 201, when the sensing measurement frequency is an inter-system frequency that is allowed to be used for spectrum sharing;

The sensory measurement report configuration may be: when the measurement result of the different system frequency corrected by the offset and hysteresis parameters is lower than the preset threshold value (Mn+Ofn+Hys<Thresh), report the measurement result;

The sensing measurement reporting configuration may further include: when the measurement result of the different system frequency after being corrected by the offset and the hysteresis parameter changes from being lower than the preset threshold value to being higher than the preset threshold value (ie, Mn +Ofn-Hys>Thresh), report the measurement results;

Wherein, Mn is the measurement result of the frequency of the different system, Ofn is the specific offset of the frequency of the different system, Hys is the hysteresis parameter of the event, and Thresh is the preset threshold value.

As shown in FIG. 4 , the specific process is described by taking the perception measurement frequency as the EUTRA frequency as an example. Wherein, the selection of the threshold depends on the implementation of the eNB algorithm, and different thresholds may be set for different sensing measurement frequencies. Figure 4 includes the following steps:

Step 401: The eNB configures sensing measurement frequencies f ₁ and f ₂ for the UE through an RRC connection reconfiguration message, and configures the reporting configuration as an A7 event, and at the same time sets that when the leaving condition of the A7 event is met, the measurement reporting is triggered.

Step 402: UE performs perception measurement, and the f ₁ measurement result is higher than the threshold value, which does not meet the event entry condition of A7, and does not trigger measurement reporting. If the measurement result of f2 is lower _than the threshold value, the A7 event entry condition is met, and the measurement report is triggered.

Step 403: UE sends a measurement report message, and feeds back the _f2 measurement result to the eNB.

Step 404: The eNB judges the measurement result reported by the UE, and judges that f ₂ is available and f ₁ is not available.

Step 405: UE performs perception measurement, and the measurement result of f ₁ is lower than the threshold value, which meets the event entry condition of A7, and triggers measurement reporting. If the measurement result of f2 is higher _than the threshold value, the A7 event departure condition is met, and the measurement report is triggered.

Step 406: UE sends _a measurement report message, and feeds back the f1 measurement result and _f2 measurement result to the eNB.

Step 407: The eNB judges the measurement result reported by the UE, and judges that f ₁ is available and f ₂ is not available.

third solution

In the event trigger mode, regardless of whether the sensing measurement frequency is EUTRA frequency, a new type of event C1 is defined to trigger the measurement and reporting of the sensing frequency. The specific definition is as follows:

Event C1: Sensing becomes worse than threshold (Sensing becomes worse than threshold)

Entry condition: Perceptual measurement result after offset and hysteresis parameter correction <threshold value

Mn+Ofn+Ocn+Hys<Thresh (Formula 9)

Exit condition: sensory measurement result after correction of offset and hysteresis parameters > threshold value

Mn+Ofn+Ocn-Hys>Thresh (Formula 10)

Wherein, Mn is the measurement result of the sensing frequency, Ofn is the specific offset of the sensing frequency, Ocn is the specific offset of the sensing frequency cell, and Hys is the hysteresis parameter of the event. The values of Ofn, Ocn and Hys are configured by eNB.

The measurement object corresponding to the event C1 is the sensing measurement frequency configured by the eNB, which may be an EUTRA frequency or an inter-system frequency that is allowed to be used for spectrum sharing.

When the sensing measurement result of the UE satisfies the C1 event entry condition, measurement reporting is triggered. Similarly, considering the timeliness and particularity of the perception measurement results, on the basis of defining the new event C1, it is optional to add when the measurement results meet the C1 event leaving condition, that is, when the measurement results are higher than the threshold value, trigger Measurement reporting.

The measurement result of the UE for the sensing frequency refers to the detection result based on methods such as received signal energy or signal quality (depending on the configuration of the eNB), and the sensing frequency-specific offset Ofn configured by the eNB, the sensing frequency cell-specific offset The corrected result of the displacement Ocn and the hysteresis parameter Hys of the event.

Specifically, in the above step 201, when the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing;

The sensory measurement reporting configuration may be: when the measurement result of the sensory measurement frequency corrected by the offset and hysteresis parameters is lower than the preset threshold value (that is, Mn+Ofn+Ocn+Hys<Thresh), report the measurement result;

The perceptual measurement reporting configuration may further include: when the measurement result of the perceptual measurement frequency corrected by the offset and hysteresis parameters changes from being lower than a preset threshold value to being higher than a preset threshold value (that is, Mn +Ofn+Ocn-Hys>Thresh), report the measurement results;

Wherein, Mn is the measurement result of the sensing measurement frequency, Ofn is the specific offset of the sensing measurement frequency, Ocn is the cell-specific offset of the sensing measurement frequency, Hys is the hysteresis parameter of the event, and Thresh is the preset The set threshold value.

As shown in Figure 5, the specific process is described. Wherein, the selection of the threshold depends on the implementation of the eNB algorithm, and different thresholds may be set for different sensing measurement frequencies. Figure 5 includes the following steps:

Step 501: The eNB configures the sensing measurement frequencies f ₁ and f ₂ for the UE through the RRC connection reconfiguration message, and configures the reporting as a C1 event, and sets that when the leaving condition of the C1 event is met, the measurement reporting is triggered.

Step 502: UE performs perception measurement, and the f ₁ measurement result is higher than the threshold value, which does not meet the C1 event entry condition, and does not trigger measurement reporting. If the measurement result of f2 is lower _than the threshold value, the C1 event entry condition is met, and measurement reporting is triggered.

Step 503: the UE sends a measurement report message, and feeds back the _f2 measurement result to the eNB.

Step 504: The eNB judges the measurement result reported by the UE, and judges that f ₂ is available and f ₁ is not available.

Step 505: UE performs sensing measurement, and the f ₁ measurement result is lower than the threshold value, which meets the C1 event entry condition, and triggers measurement reporting. If the f2 measurement result is higher _than the threshold value, the C1 event leaving condition is met, and the measurement report is triggered.

Step 506: UE sends _a measurement report message, and feeds back the f1 measurement result and _f2 measurement result to the eNB.

Step 507: The eNB judges the measurement result reported by the UE, and judges that f ₁ is available and f ₂ is not available.

Option four

The periodic trigger mode defines a new periodic trigger measurement reporting mechanism, which is only used to trigger the measurement and reporting of the perceived frequency. The specific definition is as follows:

Periodically triggered measurement reporting: the purpose is to report the sensing measurement results "reportSensingResults", instruct the UE to perform sensing measurements and report the measurement results in a timely manner. The measurement object corresponding to "reportSensingResults" is the sensing measurement frequency configured by the eNB, which may be an EUTRA frequency or an inter-system frequency that is allowed to be used for spectrum sharing. After receiving the configuration information of the eNB, the UE starts periodic sensing measurement on the corresponding frequency. After obtaining available measurement results, report the measurement results to the eNB.

The measurement result of the UE for the perceived frequency refers to the detection result based on methods such as received signal energy or signal quality (depending on the configuration of the eNB).

Specifically, in the above step 201, the sensing measurement frequency may be an EUTRA frequency or an inter-system frequency that is allowed to be used for spectrum sharing; the reporting is configured as a periodic trigger.

As shown in Figure 6, the specific process is described. Figure 6 includes the following steps:

Step 601: The eNB configures the sensing measurement frequencies f ₁ and f ₂ for the UE through the RRC connection reconfiguration message, and configures the reporting configuration as a periodic trigger, with the purpose of reportSensingResults.

Step 602: UE performs sensing measurement, obtains f ₁ and f ₂ measurement results, and triggers measurement reporting.

Step 603: UE sends a measurement report message, and feeds back the measurement results _of f1 and _f2 to the eNB.

Step 604: The eNB judges the measurement results reported by the UE, and judges whether f ₁ and f ₂ are available.

The method for triggering spectrum sensing measurement and reporting proposed by the present invention is introduced above. The present invention also proposes a system and device for triggering spectrum sensing measurement and reporting, wherein:

A system for triggering spectrum sensing measurement and reporting, the system is adapted to an LTE system supporting frequency sensing, the system includes:

The base station is configured to send a sensing measurement configuration parameter to the user equipment, where the sensing measurement configuration parameter includes a sensing measurement object configuration and a sensing measurement reporting configuration; the sensing measurement object configuration includes a sensing measurement frequency, a frequency offset specific to the frequency, and A cell-specific frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes a type that triggers sensing measurement reporting;

The user equipment is configured to perform a sensing measurement process according to the sensing measurement configuration parameters and report a sensing measurement result to the base station.

A base station for triggering spectrum sensing measurement and reporting, the base station is adapted to an LTE system supporting frequency sensing, and the base station includes:

A sensing measurement configuration module, configured to send sensing measurement configuration parameters to the user equipment, where the sensing measurement configuration parameters include a sensing measurement object configuration and a sensing measurement reporting configuration; the sensing measurement object configuration includes a sensing measurement frequency, a specific frequency offset of the frequency Shift and cell-specific frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes triggering the sensing measurement reporting type;

The perception measurement result receiving module is configured to receive the perception measurement result reported by the user equipment according to the perception measurement configuration parameters.

A user equipment that implements spectrum sensing measurement and reporting, the user equipment is adapted to an LTE system that supports frequency sensing, and the user equipment includes:

The sensing measurement configuration receiving module is configured to receive sensing measurement configuration parameters from the base station, the sensing measurement configuration parameters include sensing measurement object configuration and sensing measurement reporting configuration; the measurement object configuration includes sensing measurement frequency, the frequency specific frequency offset Shift and cell-specific frequency offset; the sensing measurement frequency is an EUTRA frequency or a different system frequency that allows spectrum sharing; the sensing measurement reporting configuration includes triggering the sensing measurement reporting type;

A perception measurement and reporting module, configured to perform perception measurement according to the configuration parameters of the perception measurement and report the perception measurement result.

Wherein, in the above-mentioned system, base station, and user equipment, the configuration of the sensing measurement object and the configuration of the sensing measurement reporting are consistent with the content introduced in the above-mentioned method, and are not repeated here.

To sum up, the present invention ensures that the network side obtains the measurement mechanism of the sensing frequency situation in a timely manner, that is, the UE side performs periodic sensing measurement and reporting according to the instructions of the eNB, and the sensing measurement is not affected by the signal quality of the main serving cell PCell.

The event triggering method applicable to UE-side perception measurement triggering and reporting can be: extending the existing A4 event (the adjacent frequency measurement result is higher than the threshold value) and B1 event (the different system adjacent frequency measurement result is higher than the threshold value), When the sensing measurement result satisfies the entry condition of A4 event or B1 event, the measurement report is triggered; optionally, when the measurement result satisfies the exit condition of A4 event or B1 event, that is, when the measurement result is lower than the threshold value, the measurement report is triggered . The measurement objects corresponding to the event A4 and the event B1 are the sensing measurement frequencies configured by the eNB, which are respectively the EUTRA frequency and the InterRAT frequency that are allowed to be used for spectrum sharing.

The event trigger method applicable to UE side sensing measurement triggering and reporting can also be: define new event A7 (the adjacent frequency measurement result is lower than the threshold value) and event B3 (different system adjacent frequency measurement result is lower than the threshold value), When the perception measurement result meets the entry condition of A7 event or B3 event, the measurement report is triggered; it is optional to set when the measurement result meets the exit condition of A7 event or B3 event, that is, when the measurement result is higher than the threshold value, the measurement report is triggered . The measurement objects corresponding to the event A7 and the event B3 are the sensing measurement frequencies configured by the eNB, which are EUTRA frequencies and InterRAT frequencies that are allowed to be used for spectrum sharing respectively.

The event trigger method applicable to UE side perception measurement triggering and reporting can also be: define a new event C1 (the perception measurement result is lower than the threshold value), and when the UE perception measurement result meets the C1 event entry condition, trigger measurement reporting; Optionally, when the measurement result satisfies the C1 event leaving condition, that is, when the measurement result is higher than the threshold value, measurement reporting is triggered.

The periodic trigger mode applicable to the triggering and reporting of the sensing measurement on the UE side may be: define a new periodic trigger mode for reporting the sensing measurement result "reportSensingResults". After receiving the configuration information of the eNB, the UE starts periodic sensing measurement on the corresponding frequency. After obtaining available measurement results, report the measurement results to the eNB.

It can be seen that the method for triggering spectrum sensing measurement and reporting proposed by the present invention for the LTE system supporting spectrum sensing ensures that the UE capable of sensing and measuring can perform spectrum sensing measurement according to the instructions of the eNB, and report the measurement results meeting the conditions to the eNB in time , assisting the eNB to perform spectrum management. The method is simple to implement, solves the triggering and reporting problems of the sensing measurement of the LTE system, and ensures reasonable sharing and effective utilization of spectrum resources.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (13)

1. trigger the method that frequency spectrum perception is measured and reported, the method is adapted to support the length of frequency perceptionPhase evolution LTE system, is characterized in that, described method comprises:

Base station sends perception to subscriber equipment and measures configuration parameter, and described perception is measured configuration parameter and comprised perceptionMeasuring object configuration and perception measurement report configuration; The configuration of described perception measuring object comprise perception measuring frequency,The specific frequency offset of the specific frequency offset of this frequency and community; Described perception measuring frequency is for allowingCarry out evolved universal terrestrial wireless access EUTRA frequency or the different system frequency of frequency spectrum share use; Described senseKnowing to measure reports configuration to comprise the type that triggering perception measurement reports;

Subscriber equipment is measured configuration parameter according to described perception and is carried out perception measuring process and report to described base stationPerception measurement result.

2. method according to claim 1, is characterized in that, described perception measuring frequency for allow intoRow frequency spectrum share use EUTRA frequency time;

Described perception measurement reports and is configured to: as process side-play amount and the revised described EUTRA of sluggish parameterThe measurement result of frequency higher than set in advance threshold value time, report perception measurement result; And, work as processThe measurement result of side-play amount and the revised described EUTRA frequency of sluggish parameter is by the door higher than setting in advanceWhen limit value changes into lower than the threshold value setting in advance, report perception measurement result;

Wherein, the described measurement result through side-play amount and the revised EUTRA frequency of sluggish parameter is higher than in advanceThe threshold value of first setting is: Mn+Ofn+Ocn-Hys > Thresh;

The described measurement result through side-play amount and the revised EUTRA frequency of sluggish parameter is lower than establishing in advanceThe threshold value of putting is: Mn+Ofn+Ocn+Hys < Thresh;

Wherein, Mn is the perception measurement result of described EUTRA frequency, and Ofn is described EUTRA frequencySpecific side-play amount, Ocn is the specific side-play amount in described EUTRA frequency cells, the sluggishness that Hys is eventParameter, Thresh is predefined threshold value.

3. method according to claim 1, is characterized in that, described perception measuring frequency for allow intoRow frequency spectrum share use different system frequency time;

Described perception measurement reports and is configured to: when process side-play amount and the revised described different system of sluggish parameterThe measurement result of frequency higher than set in advance threshold value time, report perception measurement result; And, work as processThe measurement result of side-play amount and the revised described different system frequency of sluggish parameter is by the thresholding higher than setting in advanceWhen value changes into lower than the threshold value setting in advance, report perception measurement result;

Wherein, the described measurement result through side-play amount and the revised different system frequency of sluggish parameter is higher than in advanceThe threshold value of first setting is: Mn+Ofn-Hys > Thresh;

The described measurement result through side-play amount and the revised different system frequency of sluggish parameter is lower than setting in advanceThreshold value be: Mn+Ofn+Hys < Thresh;

Wherein, the perception measurement result that Mn is described different system frequency, Ofn is that described different system frequency is specificSide-play amount, the sluggish parameter that Hys is event, Thresh is predefined threshold value.

4. method according to claim 1, is characterized in that, described perception measuring frequency for allow intoRow frequency spectrum share use EUTRA frequency time;

Described perception measurement reports and is configured to: as process side-play amount and the revised described EUTRA of sluggish parameterThe measurement result of frequency lower than set in advance threshold value time, report perception measurement result;

The described measurement result through side-play amount and the revised EUTRA frequency of sluggish parameter is lower than establishing in advanceThe threshold value of putting is: Mn+Ofn+Ocn+Hys < Thresh;

Wherein, Mn is the perception measurement result of described EUTRA frequency, and Ofn is described EUTRA frequencySpecific side-play amount, Ocn is the specific side-play amount in described EUTRA frequency cells, the sluggishness that Hys is eventParameter, Thresh is predefined threshold value.

5. method according to claim 4, is characterized in that, described perception measurement reports configuration also to wrapDraw together: when the measurement result through side-play amount and the revised described EUTRA frequency of sluggish parameter is by lower than in advanceWhen the threshold value arranging changes into higher than the threshold value setting in advance, report perception measurement result;

The described measurement result through side-play amount and the revised EUTRA frequency of sluggish parameter is higher than establishing in advanceFixed threshold value is: Mn+Ofn+Ocn-Hys > Thresh.

6. method according to claim 1, is characterized in that, described perception measuring frequency for allow intoRow frequency spectrum share use different system frequency time;

Described perception measurement reports and is configured to: when process side-play amount and the revised described different system of sluggish parameterThe measurement result of frequency lower than set in advance threshold value time, report perception measurement result;

The described measurement result through side-play amount and the revised different system frequency of sluggish parameter is lower than setting in advanceThreshold value be: Mn+Ofn+Hys < Thresh;

Wherein, the perception measurement result that Mn is described different system frequency, Ofn is that described different system frequency is specificSide-play amount, the sluggish parameter that Hys is event, Thresh is predefined threshold value.

7. method according to claim 6, is characterized in that, described perception measurement reports configuration also to wrapDraw together: when the measurement result through side-play amount and the revised described different system frequency of sluggish parameter is by lower than in advanceWhen the threshold value arranging changes into higher than the threshold value setting in advance, report perception measurement result;

Wherein, the described measurement result through side-play amount and the revised different system frequency of sluggish parameter is higher than in advanceThe threshold value of first setting is: Mn+Ofn-Hys > Thresh.

8. method according to claim 1, is characterized in that, described perception measuring frequency for allow intoWhen the EUTRA frequency that row frequency spectrum share is used or different system frequency;

Described perception measurement reports and is configured to: when surveying through side-play amount and the revised described perception of sluggish parameterAmount frequency measurement result lower than set in advance threshold value time, report perception measurement result;

The described measurement result through side-play amount and the revised perception measuring frequency of sluggish parameter is lower than establishing in advanceThe threshold value of putting is: Mn+Ofn+Ocn+Hys < Thresh;

Wherein, Mn is the perception measurement result of described perception measuring frequency, and Ofn is described perception measuring frequencySpecific side-play amount, Ocn is the specific side-play amount in described perception measuring frequency community, the sluggishness that Hys is eventParameter, Thresh is predefined threshold value.

9. method according to claim 8, is characterized in that, described perception measurement reports configuration also to wrapDraw together: when the measurement result through side-play amount and the revised described perception measuring frequency of sluggish parameter is by lower than in advanceWhen the threshold value first arranging changes into higher than the threshold value setting in advance, report perception measurement result;

Wherein, the described measurement result through side-play amount and the revised perception measuring frequency of sluggish parameter higher thanPredefined threshold value is: Mn+Ofn+Ocn-Hys > Thresh.

10. method according to claim 1, is characterized in that, described perception measuring frequency is for allowingWhile carrying out the EUTRA frequency of frequency spectrum share use or different system frequency;

Described perception measurement reports the cycle that is configured to trigger.

11. 1 kinds are triggered frequency spectrum perception and measure and the systems that report, and this system is adapted to support frequency perceptionLong Term Evolution LTE system, is characterized in that, described system comprises:

Base station, measures configuration parameter for sending perception to subscriber equipment, and configuration parameter bag is measured in described perceptionDraw together the configuration of perception measuring object and perception measurement and report configuration; Described perception measuring object configuration comprises perception surveyAmount frequency, the specific frequency offset of the specific frequency offset of this frequency and community; Described perception is measured frequentlyRate is general land wireless access EUTRA frequency or the different system frequency that allows to carry out frequency spectrum share use; InstituteStating perception measurement reports configuration to comprise the type that triggering perception measurement reports;

Subscriber equipment, for measuring according to described perception that configuration parameter is carried out perception measuring process and to described baseStation reports perception measurement result.

12. 1 kinds are triggered frequency spectrum perception and measure and the base stations that report, and this base station is adapted to support frequency perceptionLong Term Evolution LTE system, is characterized in that, described base station comprises:

Configuration module is measured in perception, measures configuration parameter for sending perception to subscriber equipment, and described perception is surveyedAmount configuration parameter comprises that the configuration of perception measuring object and perception measurement report configuration; Described perception measuring object is joinedPut and comprise perception measuring frequency, the specific frequency offset of the specific frequency offset of this frequency and community; InstituteStating perception measuring frequency is the evolved universal terrestrial wireless access EUTRA frequency that allows to carry out frequency spectrum share useRate or different system frequency; Described perception measurement reports configuration to comprise and triggers the type that perception measurement reports;

Perception measurement result receiver module, measures configuration parameter for receiving subscriber equipment according to described perceptionThe perception measurement result of report.

Realize the subscriber equipment that frequency spectrum perception is measured and reported for 13. 1 kinds, this subscriber equipment is adapted to support frequentlyThe Long Term Evolution LTE system of rate perception, is characterized in that, described subscriber equipment comprises:

Configuration receiver module is measured in perception, measures configuration parameter, described sense for receiving from the perception of base stationKnow that measuring configuration parameter comprises that the configuration of perception measuring object and perception measurement report configuration; It is right that described perception is measuredResemble configuration and comprise perception measuring frequency, the specific frequency offset of the specific frequency offset of this frequency and community;Described perception measuring frequency is the evolved universal terrestrial wireless access EUTRA that allows to carry out frequency spectrum share useFrequency or different system frequency; Described perception measurement reports configuration to comprise and triggers the type that perception measurement reports;

Perception measurement and reporting module, configuration parameter carries out that perception is measured for measuring according to described perception andReport perception measurement result.