CN101938774A - Methods for measurement and reporting in carrier aggregation - Google Patents
Methods for measurement and reporting in carrier aggregation Download PDFInfo
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- CN101938774A CN101938774A CN2009101594114A CN200910159411A CN101938774A CN 101938774 A CN101938774 A CN 101938774A CN 2009101594114 A CN2009101594114 A CN 2009101594114A CN 200910159411 A CN200910159411 A CN 200910159411A CN 101938774 A CN101938774 A CN 101938774A
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Abstract
The invention discloses methods for measurement and reporting in carrier aggregation. The method for measurement comprises that: user equipment receives measurement configuration from a base station, wherein the measurement configuration comprises a measurement event applied to a measurement reference component carrier; and the user equipment determines the measurement reference component carrier, and performs measurement on the measurement reference component carrier and measurement event estimation. Through the methods, the ambiguity of serving cells in the carrier aggregation is avoided, the measurement configuration in conventional protocols is compatible, and needs in mobility in the carrier aggregation are satisfied.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to the method for measuring and reporting in a kind of carrier aggregation (carrier aggregation is called for short CA).
Background technology
In mobile communication system, in order to satisfy the mobility requirement, when subscriber equipment (User Equipment is called for short UE) after certain sub-district and network connect, UE still needs the signal quality of its Serving cell and neighbor cell is measured, so that select proper cell to switch.With evolved Universal Terrestrial Radio Access Network network (Evolved Universal Terrestrial Radio Access Network, abbreviate EUTRAN as) be example, the detailed process that UE measures under the connected state is: network side will be measured control messages and send to UE, wherein, comprise the attribute of measuring sign (measurementidentity abbreviates MID as), event type, measuring object and needing to measure in this measurement control messages; UE carries out parameter initialization according to the measurement sign of measuring in the control messages, and obtains each measuring object attribute and the measurement result separately in whole measuring objects of measuring in the control messages; UE carries out the incident assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object, and the duration by assessing the entry condition of determining to satisfy in whole measuring objects measurement event is more than or equal to the measuring object of scheduled measurement triggered time length (Time To Trigger abbreviates TTT as); UE puts into these measuring objects (this moment, measuring object corresponded to the sub-district) that satisfy the incident entry condition cell list (cellsTriggeredList) of the measurement sign of this incident correspondence; UE generates measurement report and measurement report is sent to network side according to the measurement result of the measuring object of determining, the measuring object that is comprised in the measurement report all is to obtain from the cell list of the measurement sign of this incident correspondence.
In mobile communication system, measuring object is a unit with frequency or the cell set that is positioned at frequency, measuring configuration comprises and (for example measures form that sign, measuring object, measurement report, Event triggered or periodic report) etc., wherein, measure sign and report structure (reporting configuration, the attribute that expression reports) corresponding to a certain measuring object (measurement object) and specific measurement, the different measuring of same measuring object reports the corresponding different measurement of structure to identify.Measurement configuration for event type, measurement reports structure corresponding one by one with measurement event (this moment one measure sign described a measuring object and corresponding with it measurement event), and the present measurement event that defines generally comprises the duration of entry condition of lag parameter Hys, incident of the entry condition of incident, the certain threshold Thresh that leaves condition, incident, incident and the side-play amount Offset of incident etc.
In order to satisfy the mobility requirement of UE under the connected state, require UE that the measuring object that satisfies the incident entry condition is measured and reported to Serving cell and adjacent sub-district, some measurement event have been defined at present to Serving cell, for example, the entry condition of definition measurement event is that the signal quality of Serving cell is higher than predetermined threshold, or the signal quality of Serving cell is lower than predetermined threshold; To the measurement event of adjacent sub-district, for example, the entry condition of definition measurement event is that the signal quality of adjacent sub-district is higher than a certain threshold value, or the signal quality of adjacent sub-district is than the high predetermined side-play amount of signal quality of current service cell.
For the measurement report of Event triggered, have two kinds to report form: a kind of is that the Event triggered single reports the measurement report of Event triggered (or be called); Another kind is that Event triggered periodically reports.The Event triggered single reports and is meant that network side has disposed the entry condition of incident for certain UE, after UE detection and assessment measuring object satisfy the entry condition of incident, the measuring object that satisfies the incident entry condition is put into the cell list of the measurement sign of this incident correspondence, only report the one-shot measurement report, the measuring object that this report comprises all obtains from cell list.If in certain time of back, there is new measuring object to satisfy the entry condition of this incident again, UE puts into new measuring object the cell list of the measurement sign of this incident correspondence, report simultaneously new measurement report once more, the measuring object that new measurement report comprises all from this moment cell list obtain, report this moment number of times still for once.
Event triggered periodically reports and is meant that network side has disposed the entry condition of incident for certain UE, after UE detection and assessment measuring object satisfy the entry condition of incident, the measuring object that satisfies the incident entry condition is put into the cell list of the measurement sign of this incident correspondence, reporting measurement reports repeatedly, the times of reporting and the time interval dispose by network side, and the measuring object that the measurement report that at every turn reports comprises all is to obtain from the current cell list that gives the correct time.In the process that this repeatedly reports or after repeatedly reporting end, if there is new measuring object to satisfy the entry condition of incident, UE reports number of times with replacement, new measuring object is put into the cell list of the measurement sign of this incident correspondence, according to the time interval of setting with report the orderly once more reporting measurement result of number of times, the measuring object that each measurement report comprises all is to obtain from the current cell list that gives the correct time then.
To the measurement of measuring object, different systems adopts different method of measurement, all is signal qualitys of reflection sub-district.In LTE, UE measures is the power (ReferenceSignal Received Power abbreviates RSRP as, and unit is dBm) of the reference signal that receives or quality (the Reference Signal Received Quality of the reference signal that UE receives, abbreviate RSRQ as, unit is dB).In WCDMA, that UE measures is received power (the Received Signal CodePower of Common Pilot Channel, be called for short RSCP, unit is dBm) or the Ec/No of Common Pilot Channel (refer to behind the transmitting terminal spread spectrum on every code channel the energy of each chip and the ratio of band limited white noise power spectral density), unit is dB.UE needs the measurement result of more same type when comparing the signal quality of different districts.When the assessment measuring object satisfies the incident entry condition, complete description to this measuring object not only comprises RSRP or the RSRQ that UE records, specific side-play amount (the frequency specificoffset of frequency that also comprises this measuring object, abbreviation Ofn), specific side-play amount (the cell specific offset in sub-district, be called for short Ocn), with the A4 incident that defines among the LTE is example: entry condition is that the signal quality of adjacent sub-district is higher than a certain threshold value, its concrete mathematical description is Mn+Ofn+Ocn-Hys＞Thresh, and Mn is RSRP or the RSRQ that UE records adjacent sub-district in the formula.
In order to satisfy people to the demand of high bandwidth more, LTE Advance proposes the purpose of the bigger bandwidth of method realization of employing carrier aggregation, this moment, (each carrier wave was called component carrier by a plurality of continuous or discrete carrier waves in a sub-district, Component Carrier) forms, the service of multicarrier can be provided for UE simultaneously.Component carrier can adopt the carrier wave of compatible LTE system, and this carrier wave is called the backward compatibility carrier wave; Component carrier also can adopt the carrier wave of incompatible existing LTE system, and this carrier wave is called non-backward compatible carrier waves, and this carrier wave can only be that Release 10 versions and above UE use.Component carrier can become the specific anchor carrier wave in sub-district (cell specific anchor carrier), also can become the specific anchor carrier wave of user (UE specific anchor carrier).If only at one-component carrier wave transmitting system message, beep-page message etc., this component carrier becomes the specific anchor carrier wave in sub-district; If a plurality of component carriers all can transmitting system message, beep-page message etc., just there is not the specific anchor carrier wave in sub-district of typical meaning this moment, for the UE of connected state, certain component carrier of its work can become the specific anchor carrier wave of user.For the UE of connected state, a plurality of component carriers of its work (receiving or send signaling or data at these carrier waves) are called activation carrier wave collection (active carriers) or service carrier wave collection.
Whether carrier aggregation is continuous on frequency domain by each component carrier, can divide continuous carrier aggregation and discrete carrier aggregation, and so-called continuous carrier aggregation is meant that each component carrier is interconnective on frequency domain; Discontinuous carrier aggregation then refers to it is unconnected between each component carrier on frequency domain.Carrier aggregation by each component carrier whether in identical frequency band, the carrier aggregation and the carrier aggregation of striding frequency band (over multiple frequency bands) that can be divided into single band (single band), so-called single carrier aggregation is meant all component carriers that participate in carrier aggregation all in same frequency band, and single carrier aggregation can be that continuous carrier aggregation also can be discontinuous carrier aggregation; The carrier aggregation that what is called is striden frequency band is meant that the component carrier that participates in carrier aggregation can be derived from different frequency bands.
In carrier aggregation, still need to satisfy the mobility demand, still needing network side is that UE implements to measure configuration, yet the configuration of many measurement event is measurement target or references object with Serving cell (having only a carrier wave) all in the measurement of the existing LTE configuration, adopt the sub-district of carrier aggregation that a plurality of carrier waves are arranged, existing measurement configuration can not be applied to the sight of multicarrier, therefore in LTE-A, UE works under the situation of multicarrier, how to select references object or measurement target, how measuring and reporting is the problem of needing solution badly.
Summary of the invention
The technical problem to be solved in the present invention is exactly the method for measuring and reporting in a kind of carrier aggregation of proposition, solves the problem that prior protocols can't be applied to the sight of multicarrier.
In order to solve the problems of the technologies described above, the invention provides the method for measuring in a kind of carrier aggregation, comprising:
Subscriber equipment receives the measurement configuration of sending described base station, and described measurement configuration comprises the measurement event that is applied to the witness mark component carrier;
Described subscriber equipment is determined described witness mark component carrier, and described witness mark component carrier is measured with measurement event assess.
Further, said method also can have following characteristics:
Described witness mark component carrier is one or more, if described witness mark component carrier is a plurality of, then subscriber equipment is measured respectively described a plurality of witness mark component carriers.
Further, said method also can have following characteristics:
Described subscriber equipment is in connection status in the sub-district of carrier aggregation that the base station is had jurisdiction over, described witness mark component carrier is: the carrier wave collection of the sub-district of described carrier aggregation or the carrier wave of described subscriber equipment are concentrated all or part of descending carrier, perhaps are the equilibrium of the carrier wave collection of the carrier wave collection of sub-district of described carrier aggregation or described subscriber equipment.
Further, said method also can have following characteristics:
The equilibrium of described carrier wave collection specifically is meant: described subscriber equipment is weighted summation to the measurement result of carrier wave concentrated part or whole descending carriers.
Further, said method also can have following characteristics:
The weight coefficient of each descending carrier that described carrier wave is concentrated is by described base station configuration and inform described subscriber equipment, perhaps by described base station and the subscriber equipment described weight coefficient of having made an appointment.
Further, said method also can have following characteristics:
Described witness mark component carrier is: all or part of in the downlink component carrier that described subscriber equipment uses.
Further, said method also can have following characteristics:
Described subscriber equipment is determined described witness mark component carrier, specifically comprises following mode:
Described base station and the described subscriber equipment described witness mark component carrier of having made an appointment;
The information of the described witness mark component carrier of described subscriber equipment is informed in perhaps described base station;
Perhaps select described witness mark component carrier by described subscriber equipment.
Further, said method also can have following characteristics:
Described base station and the described subscriber equipment described witness mark component carrier of having made an appointment specifically is meant:
Described base station and described subscriber equipment are made an appointment, and to insert successful downlink component carrier at random be that the specific anchor carrier wave in the witness mark component carrier or the sub-district of making an appointment is that the specific anchor carrier wave of the witness mark component carrier or the user that makes an appointment is that the downlink component carrier of witness mark component carrier or each frequency band ad-hoc location of making an appointment is the witness mark component carrier to subscriber equipment.
Further, said method also can have following characteristics:
The information of the described witness mark component carrier of described subscriber equipment is informed in described base station, specifically is meant:
Described base station is carried corresponding described witness mark component carrier respectively in described each measurement configuration information, or the information of described subscriber equipment witness mark component carrier or the described witness mark component carrier of described subscriber equipment is informed in described base station in system message information are informed in described base station in space interface signaling.
Further, said method also can have following characteristics:
If select described witness mark component carrier by described subscriber equipment, when described subscriber equipment carries out the measurement event assessment, if there are new one or more measuring objects all to satisfy the entry condition of described measurement event in the scheduled measurement triggered time length that continues, then trigger reporting measurement reports, subscriber equipment carries the information of witness mark component carrier in described measurement report, send to the base station.
Further, said method also can have following characteristics:
Described new measuring object is meant: be not included in the measuring object in the described measurement event corresponding district tabulation.
Further, said method also can have following characteristics:
The information of described witness mark component carrier is the frequency or the carrier index of witness mark component carrier.
Further, said method also can have following characteristics:
Described subscriber equipment also carries the measurement result of witness mark component carrier in described measurement report.
Further, said method also can have following characteristics:
Described measurement event specifically is meant: the signal quality of neighbor cell or adjacent carrier is higher than predetermined threshold than the signal quality that the signal quality of high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier is lower than predetermined threshold and neighbor cell or adjacent carrier.
In order to solve the problems of the technologies described above, the present invention also provides the method that measurement reports in a kind of carrier aggregation, comprising:
During reporting measurement report by user equipment, described subscriber equipment carries the information of witness mark component carrier in described measurement report.
Further, said method also can have following characteristics:
The information of described witness mark component carrier is the frequency or the carrier index of witness mark component carrier.
Further, said method also can have following characteristics:
Described subscriber equipment also carries the measurement result of witness mark component carrier in described measurement report.
Further, said method also can have following characteristics:
Before the described reporting measurement report by user equipment, described subscriber equipment receives the measurement configuration of sending described base station, and described measurement configuration comprises and witness mark component carrier measurement event relatively;
Described subscriber equipment is selected described witness mark component carrier, described witness mark component carrier is measured with measurement event assessed.
Further, said method also can have following characteristics:
Described and the measurement event comparison of witness mark component carrier specifically are meant: the signal quality of neighbor cell or adjacent carrier is higher than predetermined threshold than the signal quality that the signal quality of high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier is lower than predetermined threshold and neighbor cell or adjacent carrier.
Further, said method also can have following characteristics:
Described subscriber equipment is in connection status in the sub-district of carrier aggregation that the base station is had jurisdiction over, and described witness mark component carrier is: the carrier wave of the sub-district of described carrier aggregation is concentrated all or part of descending carrier, perhaps is the equilibrium of the carrier wave collection of described subscriber equipment.
Further, said method also can have following characteristics:
The equilibrium of the carrier wave collection of described subscriber equipment specifically is meant: described subscriber equipment is weighted summation to the measurement result of the part or all of descending carrier of the sub-district of carrier aggregation.
Further, said method also can have following characteristics:
The weight coefficient of each descending carrier that described carrier wave is concentrated is by described base station configuration and inform described subscriber equipment, perhaps by described base station and the subscriber equipment described weight coefficient of having made an appointment.
Further, said method also can have following characteristics:
Described witness mark component carrier is: all or part of in the downlink component carrier that described subscriber equipment uses.
Further, said method also can have following characteristics:
During the assessment of described subscriber equipment measurement event,, then trigger reporting measurement reports if there are new one or more measuring objects all to satisfy the entry condition of described measurement event in the scheduled measurement triggered time length that continues.
Further, said method also can have following characteristics:
Described new measuring object is meant: be not included in the measuring object in the described measurement event corresponding district tabulation.
Adopt method provided by the invention, solved in the carrier aggregation the ambiguity of Serving cell, not only compatible measurement configuration in the existing protocol, and satisfy ambulant demand in the carrier aggregation.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the invention;
Fig. 2 is the network topology schematic diagram that the present invention uses the LTE Advance system of example.
Embodiment
In the present invention, UE is in connection status in the sub-district of carrier aggregation that the base station is had jurisdiction over, after receiving the measurement configuration of sending the base station, this UE determines to measure the witness mark component carrier of measurement event correspondence in the configuration, the witness mark component carrier is measured, and described witness mark component carrier measured with measurement event assess.
Described UE carries out measurement event when assessment, if there are new one or more measuring objects all to satisfy the entry condition of described measurement event in the TTT time that continues, then triggers reporting measurement reports, carries the information of witness mark component carrier in the described measurement report.
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 1, the embodiment of the invention comprises the steps:
Particularly, comprise the measurement event that is applied to the witness mark component carrier in the described measurement configuration, be meant: with witness mark component carrier measurement event relatively;
Described and the measurement event comparison of witness mark component carrier specifically are meant: the signal quality of neighbor cell or adjacent carrier is higher than predetermined threshold than the signal quality that the signal quality of high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier is lower than predetermined threshold and neighbor cell or adjacent carrier;
Step 102 after UE receives described measurement configuration, determines to measure the witness mark component carrier of measurement event correspondence in the configuration, and the measuring object of incident entry condition is satisfied in assessment;
Described UE determines to measure the witness mark component carrier of measurement event correspondence in the configuration, comprise following several mode: described base station and the described subscriber equipment described witness mark component carrier of having made an appointment, the information of the described witness mark component carrier of described subscriber equipment is informed in perhaps described base station, perhaps selects the witness mark component carrier by UE;
Described base station and described subscriber equipment are made an appointment, and to insert successful downlink component carrier at random be that the specific anchor carrier wave in the witness mark component carrier or the sub-district of making an appointment is that the specific anchor carrier wave of the witness mark component carrier or the user that makes an appointment is that the downlink component carrier of witness mark component carrier or each frequency band ad-hoc location of making an appointment is the witness mark component carrier to subscriber equipment.
The information of the described witness mark component carrier of described subscriber equipment is informed in described base station, specifically is meant:
Described base station is carried corresponding described witness mark component carrier respectively in described each measurement configuration information, or the information of described subscriber equipment witness mark component carrier or the described witness mark component carrier of described subscriber equipment is informed in described base station in system message information are informed in described base station in space interface signaling.
Wherein, UE judges and measures in the configuration whether comprise the measurement event that is applied to the witness mark component carrier after receiving described measurement configuration, if comprise the measurement event that is applied to the witness mark component carrier, just select the witness mark component carrier, otherwise, need not to select the witness mark component carrier;
Described UE selects the witness mark component carrier, specifically is meant: UE selects the carrier wave of the sub-district of described carrier aggregation to concentrate one or more carrier waves as the witness mark component carrier, and the equilibrium of perhaps selecting the carrier wave collection is as the witness mark component carrier;
Described UE selects the equilibrium of carrier wave collection as the witness mark component carrier, and specifically be meant: described UE is weighted summation to the measurement result of the part or all of carrier wave of the sub-district of carrier aggregation;
Preferably, described UE selects to activate the equilibrium of carrier wave as the witness mark component carrier;
The weight coefficient of each carrier wave that described carrier wave is concentrated is by described base station configuration and inform described UE, perhaps by described base station and the UE described weight coefficient of having made an appointment;
If select described witness mark component carrier by described subscriber equipment, when described subscriber equipment carries out the measurement event assessment, if there are new one or more measuring objects all to satisfy the entry condition of described measurement event in the TTT time that continues, then trigger reporting measurement reports, UE carries the information of witness mark component carrier in described measurement report, send to the base station;
Described new measuring object is meant: be not included in the measuring object in the described measurement event corresponding district tabulation;
The information of witness mark component carrier is used to inform which carrier wave of base station is the witness mark component carrier, can be the frequency of witness mark component carrier or carrier index etc.
Preferably, described UE also carries the measurement result of witness mark component carrier in described measurement report, send to the base station.
The present invention is further described with concrete application example below:
Use example one
In LTE Advance system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB can directly link to each other with core net, also can link to each other with core net by femto gateway, does not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in the sub-district of macro base station (or Home eNodeB) carrier aggregation of having jurisdiction over, and is in idle condition.(Band 1, and up UL 1920～1980MHz in the descending DL 2110～2170MHz), is the component carrier of three continuous 20MHz at frequency band 1 for the component carrier that the sub-district of this carrier aggregation comprises.The equal transmitting system message of these three carrier waves, beep-page message.
Sometime, UE initiates to insert at random at component carrier (UL 1920～1940, and DL 2110～2130), successfully inserts the sub-district of this carrier aggregation.Because UE supports that the service traffics of multicarrier and UE are very big, component carrier (UL 1940～1960, and DL 2130～2150) has been distributed for UE again in the base station, and promptly this moment, UE used two component carriers simultaneously, is called two service carrier waves or two activation carrier waves.
The UE that is in connected state receives the measurement configuration that the base station sends, and measures in the configuration to comprise:
Measure sign 1 respective frequencies f1 and measurement event A3, this moment, the entry condition of A3 was the signal quality high side-play amount of being scheduled to of the signal quality of the neighbor cell (neighbor cell for carrier aggregation is an adjacent carrier) that is positioned at frequency f 1 than witness mark component carrier (is Serving cell in non-carrier aggregation sub-district);
Measure sign 2 respective frequencies f2 and measurement event A5, the entry condition of A5 is that the signal quality that the signal quality of the neighbor cell (neighbor cell for carrier aggregation is an adjacent carrier) that is positioned at frequency f 2 is higher than predetermined threshold value (Threshold1) and witness mark component carrier is lower than predetermined threshold value (Threshold2) at this moment.
After UE receives and measures configuration, measurement sign is wherein carried out parameter initialization, and obtain each measuring object attribute and the measurement result separately in whole measuring objects of measuring in the configuration; UE carries out the incident assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.Comprise in the configuration and witness mark component carrier measurement event relatively if measure, then UE selects the witness mark component carrier of measurement event correspondence, because UE has two to activate carrier wave at this moment, UE selects carrier wave (DL2110～2130) for measuring sign 1 and the witness mark component carrier of measuring sign 2 corresponding measurement event, the measuring object (duration is equal to or greater than TTT) of incident entry condition is satisfied in assessment, triggers reporting measurement reports.
Sometime, UE finds that the neighbor cell (sub-district 1) on the frequency f 1 (is the signal quality high predetermined side-play amount of the signal quality of sub-district 1 than witness mark component carrier (DL2110～2130) in TTT all satisfies incident A3 in the time entry condition, the measurement result of the signal quality of sub-district 1 has been passed through the smoothing processing (filtering) of layer 3), and sub-district 1 is not in measuring the tabulation of sign 1 corresponding district, UE generates the measurement report of measuring sign 1 according to rule, and measurement report is sent to the base station.In this measurement report, comprise the information of the witness mark component carrier that measurement event A3 compared, can come indication measurement reference component carrier wave with frequency or carrier index.In this measurement report, also comprise the measurement result of witness mark component carrier.
Need to prove that network can dispose when the allocating and measuring incident: with witness mark component carrier incident relatively; The incident that does not need comparison.With witness mark component carrier incident relatively such as incident A3, A5, B2; Incident A1, the A2, A4, the B1 that do not need comparison.Then need clear and definite witness mark component carrier for A3, A5, B2 incident.In this example, for measuring sign 1 and measuring sign 2 and all adopted same activation carrier wave as the witness mark component carrier, UE can select different activation carrier waves as the witness mark component carrier to different measurement signs (measurement event that possibility is corresponding identical), also can select unactivated carrier wave (in this example as DL 2150～2170) to be the witness mark component carrier, UE only need indicate the information of corresponding witness mark component carrier in the measurement report that reports.If UE is reporting measurement sign 1 and the measurement report of measuring sign 2 simultaneously, UE indicates the information of the witness mark component carrier that adopts separately respectively.
Use example two
In LTE Advance system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB can directly link to each other with core net, also can link to each other with core net by femto gateway, does not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in the sub-district of carrier aggregation that Home eNodeB is had jurisdiction over, and is in connection status.(Band 1 at frequency band 1 for the component carrier that the sub-district of this carrier aggregation comprises, UL 1920～1980M Hz, DL 2110～2170M Hz) and frequency band 2 (Band 2, UL 1850～1870M Hz, DL 1930～1950) in, be the component carrier of 4 discontinuous 20M Hz.Have only three component carrier transmitting system message, beep-page message among the Band 1 in these four carrier waves.
UE was operated in component carrier simultaneously (UL 1920～1940 this moment, DL 2110～2130, this carrier wave is called CC1), (UL 1940～1960, DL 2130～2150, this carrier wave is called CC2) and (UL1850～1870M Hz, DL 1930～1950, this carrier wave is called CC3), promptly this moment, UE used three component carriers simultaneously, was called three service carrier waves or three activation carrier waves.Need to prove that network can dispose the carrier aggregation sub-district and have asymmetric up-downgoing carrier number, such as 4 descending carriers, 2 up-link carriers, network get final product not indicating the up-downgoing carrier wave for the UE configuring time division.
Comprise during the measurement that network sends to UE is disposed and measure sign 1, measurement sign 2 and measurement sign 3.
Measure sign 1 respective frequencies f1 and measurement event A3, this moment, the entry condition of A3 was to be positioned at the signal quality of neighbor cell of frequency f 1 than the high side-play amount of being scheduled to of signal quality of witness mark component carrier;
Measure sign 2 respective frequencies f2 and measurement event A3, this moment, the entry condition of A3 was to be positioned at the signal quality of neighbor cell of frequency f 2 than the high side-play amount of being scheduled to of signal quality of witness mark component carrier;
Measure sign 3 corresponding target frequency f3 and measurement event A5, the entry condition of A5 is that the signal quality that the signal quality of the neighbor cell (neighbor cell for carrier aggregation is an adjacent carrier) that is positioned at frequency f 3 is higher than predetermined threshold value (Threshold1) and witness mark component carrier is lower than predetermined threshold value (Threshold2) at this moment.
After UE receives and measures configuration, measurement sign is wherein carried out parameter initialization, and obtain each measuring object attribute and the measurement result separately in whole measuring objects of measuring in the configuration; UE carries out the incident assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.Comprise in the configuration and witness mark component carrier measurement event relatively if measure, then UE determines the witness mark component carrier of measurement event correspondence, in the present embodiment, UE selects the witness mark component carrier of measurement event correspondence, because UE has three to activate carrier wave at this moment, UE selects carrier wave CC1 (DL 2110～2130) for measuring sign 1 and the witness mark component carrier of measuring sign 2 corresponding measurement event A3, UE measures witness mark component carrier CC1, utilize the assessment of reference component carrier wave to satisfy the measuring object (duration is equal to or greater than TTT) of incident (A3) entry condition simultaneously, trigger reporting measurement reports.UE selects carrier wave CC3 (DL 1930～1950) for measuring the witness mark component carrier of sign 3 corresponding measurement event A5, UE measures witness mark component carrier CC3, utilize reference component carrier wave CC3 assessment to satisfy the measuring object (duration is equal to or greater than TTT) of incident (A5) entry condition simultaneously, trigger reporting measurement reports.
Sometime, UE finds that the neighbor cell (sub-district 1) on the frequency f 1 all satisfies the entry condition (being the signal quality high predetermined side-play amount of the signal quality of sub-district 1 than witness mark component carrier (DL2110～2130)) of incident A3 at TTT in the time, and sub-district 1 is not in measuring the tabulation of sign 1 corresponding district, UE generates the measurement report of measuring sign 1 according to rule, and measurement report is sent to the base station.In this measurement report, comprise the information of the witness mark component carrier that measurement event A3 compared, can come indication measurement reference component carrier wave with frequency or carrier index (CC1).Because measure at downlink reference signal, therefore only need in measurement report, indicate downstream frequency, if the up-downgoing component carrier is one to one, then also can indicate, or the up-downgoing frequency all is included in the measurement report with uplink carrier frequency.In this measurement report, also comprise the measurement result of witness mark component carrier.
Spent a period of time, UE finds that the neighbor cell (sub-district 2) on the frequency f 3 all satisfies the entry condition of incident A5 at TTT in the time, and in measuring the tabulation of sign 3 corresponding district, UE does not generate the measurement report of measuring sign 3 according to rule, and measurement report is sent to the base station in sub-district 2.In this measurement report, comprise the information of the witness mark component carrier that measurement event A5 compared, can come indication measurement reference component carrier wave with frequency or carrier index (CC3).The base station is implemented the scheduling of UE according to measurement report or is made handover decisions.
Use example three
In LTE Advance system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB can directly link to each other with core net, also can link to each other with core net by femto gateway, does not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in the sub-district of carrier aggregation that the base station is had jurisdiction over, and is in connection status.The component carrier that the sub-district of this carrier aggregation comprises is at frequency band 1 (Band1, UL 1920～1980MHz, (Band 2 with frequency band 2 for DL 2110～2170MHz), UL1850～1870MHz, DL 1930～1970) in, descending is the component carrier of 5 discontinuous 20MHz, and up is the component carrier of 4 discontinuous 20MHz.Have only three component carrier transmitting system message, beep-page message among the Band 1 in these five descending carriers.
UE was operated in component carrier simultaneously (UL 1920～1940 this moment, DL 2110～2130, this carrier wave is called CC1), (UL 1940～1960, DL 2130～2150, this carrier wave is called CC2) and (UL1850～1870MHz, DL 1930～1950, this carrier wave is called CC3), promptly this moment, UE used three component carriers simultaneously, was called three service carrier waves or three activation carrier waves.
The base station sends to UE and measures configuration (by RRC Connection Reconfiguration), measures to comprise in the configuration and measures sign 1 and measure sign 2:
Measure sign 1 respective frequencies f1 and measurement event A3, this moment, the entry condition of A3 was to be positioned at the signal quality of neighbor cell of frequency f 1 than the high side-play amount of being scheduled to of signal quality of witness mark component carrier;
Measure sign 2 respective frequencies f2 and measurement event A3, this moment, the entry condition of A3 was to be positioned at the signal quality of neighbor cell of frequency f 2 than the high side-play amount of being scheduled to of signal quality of witness mark component carrier.
After UE receives and measures configuration, measurement sign is wherein carried out parameter initialization, and obtain each measuring object attribute and the measurement result separately in whole measuring objects of measuring in the configuration; UE carries out the incident assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.Should use in the example, network is all equilibriums of line activating carrier wave (CC1, CC2 and CC3) down by the witness mark component carrier of measuring configuration indication measurement incident correspondence, network side (base station) for UE each down line activating carrier wave disposed weighting parameters (by system message or by space interface signaling as reshuffling signaling), be respectively K1, K2, K3, UE with the weighted sum of the measurement result of these three carrier waves as the witness mark component carrier.Need to prove that it is the witness mark component carrier that UE also can oneself select all following line activating carrier waves, UE adopts the weighting parameters of acquiescence.UE carries out the incident assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.UE measures the measurement result of line activating carrier wave acquisition witness mark component carrier down, and utilizes this outcome evaluation to satisfy the measuring object of measurement event entry condition, and UE generates measurement report according to rule, and measurement report is sent to the base station.
Sometime, UE finds that the neighbor cell (sub-district 1) on the frequency f 1 all satisfies the entry condition (being the signal quality high predetermined side-play amount of the signal quality of sub-district 1 than witness mark component carrier) of incident A3 at TTT in the time, and sub-district 1 is not in measuring the tabulation of sign 1 corresponding district, UE generates the measurement report of measuring sign 1 according to rule, and measurement report is sent to the base station.In this measurement report, only comprise the measurement result of witness mark component carrier, because the activation carrier wave of this UE is known in the base station, so measurement report needn't comprise the frequency information of the witness mark component carrier that measurement event A3 compared.The base station is implemented the scheduling of UE according to measurement report or is made handover decisions.
Need to prove, in the present embodiment, the witness mark component carrier is that network configuration UE implements equilibrium to all activation carrier waves, network also can configuration section under part or all of descending carrier in line activating carrier wave or current all component carriers of Serving cell, result after the employing equilibrium represents the witness mark component carrier, needn't comprise the information of witness mark component carrier in the measurement report that report this moment.Perhaps UE oneself selects the part or all of descending carrier in the descending activation carrier wave of part or current all component carriers of Serving cell, result after the employing equilibrium represents the witness mark component carrier, the information that comprises the witness mark component carrier in the measurement report that report this moment, as the frequency of each descending carrier or carrier index, measurement result, if special UE adopts the equilibrium of all activated carrier wave or all component carriers of current service cell can not indicate the information of these component carriers, promptly adopt the stipulated form of certain acquiescence.
Use example four
In LTE Advance system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB can directly link to each other with core net, also can link to each other with core net by femto gateway, does not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in the sub-district of carrier aggregation that Home eNodeB is had jurisdiction over, and is in idle condition.(Band 1 at frequency band 1 for the component carrier that the sub-district of this carrier aggregation comprises, UL 1920～1980M Hz, DL 2110～2170M Hz) and frequency band 2 (Band 2, UL 1850～1870MHz, DL 1930～1950) in, be the component carrier of 4 discontinuous 20MHz.Have only three component carrier transmitting system message, beep-page message among the Band 1 in these four carrier waves.
Sometime, UE initiates to insert at random at component carrier (UL 1920～1940, and DL 2110～2130, and this carrier wave is called CC1), successfully inserts the sub-district of this carrier aggregation.Because UE supports that the service traffics of multicarrier and UE are very big, (UL 1940～1960 for UE has distributed component carrier again in the base station, DL 2130～2150, this carrier wave is called CC2) and (UL 1850～1870M Hz, DL 1930～1950, this carrier wave is called CC3), promptly this moment, UE used three component carriers simultaneously, was called three service carrier waves or three activation carrier waves.
Owing to be the carrier aggregation of striding frequency band, and each component carrier has identical coverage in each frequency band, so each frequency band of base station selects a downlink component carrier as the witness mark component carrier, the base station sends to UE and measures configuration (by RRC Connection Reconfiguration), this measurement configuration comprises two witness mark component carriers (CC1 and CC3), measure the absolute wireless frequency number of channel (the Absolute Radio Frequency Channel Number that only need indicate upstream or downstream in the configuration, ARFCN-ValueEUTRA) (if the up-downgoing carrier number is asymmetric, then can only use the frequency representation of descending carrier), perhaps indicate is first and second downlink component carrier (from low to high, adopting carrier index index to represent); Certain carrier wave that also can adopt the method (mode of promptly making an appointment) of implicit expression to set different frequency bands (Band) is witness mark component carrier (such as can be that the minimum carrier wave of Band 1 and Band 2 frequencies is the witness mark component carrier herein, i.e. CC1 and CC3); If a witness mark component carrier only is set, the specific anchor carrier wave of the specific anchor carrier wave in sub-district or user being set or measuring main carrier of can arranging is the witness mark component carrier, measures the independent information that does not just comprise the witness mark component carrier in the configuration this moment.Measure in the configuration and comprise:
Measure sign 1 and be exclusively used in witness mark component carrier CC1, respective frequencies f1 and incident A3, this moment, the entry condition of A3 was to be positioned at the signal quality of neighbor cell of frequency f 1 than the high side-play amount of being scheduled to of signal quality of witness mark component carrier CC1;
Measure sign 2 and be exclusively used in witness mark component carrier CC3, respective frequencies f2 and incident A3, this moment, the entry condition of A3 was to be positioned at the signal quality of neighbor cell of frequency f 2 than the high side-play amount of being scheduled to of signal quality of witness mark component carrier CC3;
Measure sign 3 and be exclusively used in witness mark component carrier CC1, respective frequencies f3 and incident B2, this moment, the entry condition of B2 was that the signal quality that the signal quality of the neighbor cell that is positioned at frequency f 3 of different system is higher than predetermined threshold value (Threshold1) and witness mark component carrier CC1 is lower than predetermined threshold value (Threshold2).
After UE receives and measures configuration, wherein all measurement signs are carried out parameter initialization, and obtain each measuring object attribute and the measurement result separately in whole measuring objects of measuring in the configuration; UE carries out the incident assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.In the present embodiment, measure in the configuration and clearly indicated the witness mark component carrier, and measure sign 1,2,3 and defined the measurement event that is applied to the witness mark component carrier, UE measures the witness mark component carrier, utilize the assessment of witness mark component carrier to satisfy the measuring object (neighbor cell on frequency f 1 or f2 or the f3) of incident A3, B2 entry condition simultaneously, if there is lasting TTT to satisfy the measuring object of incident entry condition, UE triggers reporting measurement reports.
Sometime, UE finds that the neighbor cell (sub-district 1) on the frequency f 1 all satisfies the entry condition (being the signal quality high predetermined side-play amount of the signal quality of sub-district 1 than witness mark component carrier CC1) of incident A3 at TTT in the time, and sub-district 1 is not in measuring the tabulation of sign 1 corresponding district, UE generates the measurement report of measuring sign 1 according to rule, and measurement report is sent to the base station.Because network side knows that measuring sign 1 is applied to witness mark component carrier CC1, so UE can adopt existing measurement report, do not need additionally to indicate the information of witness mark component carrier.Need to prove that the measurement result that this moment, UE also can reporting measurement reference component carrier wave CC1 signal quality is so that the base station obtains more information.The base station is implemented the scheduling of UE according to measurement report or is made handover decisions.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (25)
1. the method for measuring in the carrier aggregation comprises:
Subscriber equipment receives the measurement configuration of sending the base station, and described measurement configuration comprises the measurement event that is applied to the witness mark component carrier;
Described subscriber equipment is determined described witness mark component carrier, and described witness mark component carrier is measured with measurement event assess.
2. the method for claim 1 is characterized in that,
Described witness mark component carrier is one or more, if described witness mark component carrier is a plurality of, then subscriber equipment is measured respectively described a plurality of witness mark component carriers.
3. the method for claim 1 is characterized in that,
Described subscriber equipment is in connection status in the sub-district of carrier aggregation that the base station is had jurisdiction over, described witness mark component carrier is: the carrier wave collection of the sub-district of described carrier aggregation or the carrier wave of described subscriber equipment are concentrated all or part of descending carrier, perhaps are the equilibrium of the carrier wave collection of the carrier wave collection of sub-district of described carrier aggregation or described subscriber equipment.
4. method as claimed in claim 3 is characterized in that,
The equilibrium of described carrier wave collection specifically is meant: described subscriber equipment is weighted summation to the measurement result of carrier wave concentrated part or whole descending carriers.
5. method as claimed in claim 4 is characterized in that,
The weight coefficient of each descending carrier that described carrier wave is concentrated is by described base station configuration and inform described subscriber equipment, perhaps by described base station and the subscriber equipment described weight coefficient of having made an appointment.
6. the method for claim 1 is characterized in that,
Described witness mark component carrier is: all or part of in the downlink component carrier that described subscriber equipment uses.
7. the method for claim 1 is characterized in that,
Described subscriber equipment is determined described witness mark component carrier, specifically comprises following mode:
Described base station and the described subscriber equipment described witness mark component carrier of having made an appointment;
The information of the described witness mark component carrier of described subscriber equipment is informed in perhaps described base station;
Perhaps select described witness mark component carrier by described subscriber equipment.
8. method as claimed in claim 7 is characterized in that,
Described base station and the described subscriber equipment described witness mark component carrier of having made an appointment specifically is meant:
Described base station and described subscriber equipment are made an appointment, and to insert successful downlink component carrier at random be that the specific anchor carrier wave in the witness mark component carrier or the sub-district of making an appointment is that the specific anchor carrier wave of the witness mark component carrier or the user that makes an appointment is that the downlink component carrier of witness mark component carrier or each frequency band ad-hoc location of making an appointment is the witness mark component carrier to subscriber equipment.
9. method as claimed in claim 7 is characterized in that,
The information of the described witness mark component carrier of described subscriber equipment is informed in described base station, specifically is meant:
Described base station is carried corresponding described witness mark component carrier respectively in described each measurement configuration information, or the information of described subscriber equipment witness mark component carrier or the described witness mark component carrier of described subscriber equipment is informed in described base station in system message information are informed in described base station in space interface signaling.
10. method as claimed in claim 7 is characterized in that,
If select described witness mark component carrier by described subscriber equipment, when described subscriber equipment carries out the measurement event assessment, if there are new one or more measuring objects all to satisfy the entry condition of described measurement event in the scheduled measurement triggered time length that continues, then trigger reporting measurement reports, subscriber equipment carries the information of witness mark component carrier in described measurement report, send to the base station.
11. method as claimed in claim 10 is characterized in that,
Described new measuring object is meant: be not included in the measuring object in the described measurement event corresponding district tabulation.
12. as claim 7 or 9 or 10 described methods, it is characterized in that,
The information of described witness mark component carrier is the frequency or the carrier index of witness mark component carrier.
13. method as claimed in claim 10 is characterized in that,
Described subscriber equipment also carries the measurement result of witness mark component carrier in described measurement report.
14. the method for claim 1 is characterized in that,
Described measurement event specifically is meant: the signal quality of neighbor cell or adjacent carrier is higher than predetermined threshold than the signal quality that the signal quality of high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier is lower than predetermined threshold and neighbor cell or adjacent carrier.
15. measure the method that reports in the carrier aggregation, comprising:
During reporting measurement report by user equipment, described subscriber equipment carries the information of witness mark component carrier in described measurement report.
16. method as claimed in claim 15 is characterized in that,
The information of described witness mark component carrier is the frequency or the carrier index of witness mark component carrier.
17. method as claimed in claim 15 is characterized in that,
Described subscriber equipment also carries the measurement result of witness mark component carrier in described measurement report.
18. method as claimed in claim 15 is characterized in that,
Before the described reporting measurement report by user equipment, described subscriber equipment receives the measurement configuration of sending described base station, and described measurement configuration comprises and witness mark component carrier measurement event relatively;
Described subscriber equipment is selected described witness mark component carrier, described witness mark component carrier is measured with measurement event assessed.
19. method as claimed in claim 18 is characterized in that,
Described and the measurement event comparison of witness mark component carrier specifically are meant: the signal quality of neighbor cell or adjacent carrier is higher than predetermined threshold than the signal quality that the signal quality of high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier is lower than predetermined threshold and neighbor cell or adjacent carrier.
20. method as claimed in claim 15 is characterized in that,
Described subscriber equipment is in connection status in the sub-district of carrier aggregation that the base station is had jurisdiction over, and described witness mark component carrier is: the carrier wave of the sub-district of described carrier aggregation is concentrated all or part of descending carrier, perhaps is the equilibrium of the carrier wave collection of described subscriber equipment.
21. method as claimed in claim 20 is characterized in that,
The equilibrium of the carrier wave collection of described subscriber equipment specifically is meant: described subscriber equipment is weighted summation to the measurement result of the part or all of descending carrier of the sub-district of carrier aggregation.
22. method as claimed in claim 21 is characterized in that,
The weight coefficient of each descending carrier that described carrier wave is concentrated is by described base station configuration and inform described subscriber equipment, perhaps by described base station and the subscriber equipment described weight coefficient of having made an appointment.
23. method as claimed in claim 21 is characterized in that,
Described witness mark component carrier is: all or part of in the downlink component carrier that described subscriber equipment uses.
24. method as claimed in claim 18 is characterized in that,
During the assessment of described subscriber equipment measurement event,, then trigger reporting measurement reports if there are new one or more measuring objects all to satisfy the entry condition of described measurement event in the scheduled measurement triggered time length that continues.
25. method as claimed in claim 24 is characterized in that,
Described new measuring object is meant: be not included in the measuring object in the described measurement event corresponding district tabulation.
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| CN200910159411.4A CN101938774B (en) | 2009-07-02 | 2009-07-02 | Methods for measurement and reporting in carrier aggregation |
| PCT/CN2010/074083 WO2011000268A1 (en) | 2009-07-02 | 2010-06-18 | Method and user equipment for measuring signal quality and reporting measurement in carrier aggregation |
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| CN200910159411.4A CN101938774B (en) | 2009-07-02 | 2009-07-02 | Methods for measurement and reporting in carrier aggregation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102307086A (en) * | 2011-08-19 | 2012-01-04 | 中兴通讯股份有限公司 | Carrier-aggregation-technology-based hybrid communication method and communication terminal |
| CN103314613A (en) * | 2011-01-19 | 2013-09-18 | 瑞典爱立信有限公司 | Enhanced measurement gap configuration support for positioning related applications |
| WO2013170667A1 (en) * | 2012-05-17 | 2013-11-21 | 华为技术有限公司 | Frequency band measurement method, device and system |
| WO2013189340A3 (en) * | 2013-05-30 | 2014-05-01 | 中兴通讯股份有限公司 | Method for implementing soft handover based on carrier aggregation technology, base station, and terminal |
| CN105247918A (en) * | 2013-04-04 | 2016-01-13 | 诺基亚技术有限公司 | Measurement configuration for heterogenous networks |
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| EP2727397B1 (en) * | 2011-06-29 | 2018-10-31 | Nokia Technologies Oy | Method and apparatus for terminal measurement configuration in multi-radio access technology environment |
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| CN101299864B (en) * | 2008-06-23 | 2012-09-05 | 中兴通讯股份有限公司 | Method for reporting measurement information by terminal |
| CN101674586B (en) * | 2009-10-13 | 2014-03-19 | 中兴通讯股份有限公司 | Measurement processing method and system in carrier wave polymerization |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103314613A (en) * | 2011-01-19 | 2013-09-18 | 瑞典爱立信有限公司 | Enhanced measurement gap configuration support for positioning related applications |
| CN102307086A (en) * | 2011-08-19 | 2012-01-04 | 中兴通讯股份有限公司 | Carrier-aggregation-technology-based hybrid communication method and communication terminal |
| WO2013170667A1 (en) * | 2012-05-17 | 2013-11-21 | 华为技术有限公司 | Frequency band measurement method, device and system |
| CN105247918A (en) * | 2013-04-04 | 2016-01-13 | 诺基亚技术有限公司 | Measurement configuration for heterogenous networks |
| CN105247918B (en) * | 2013-04-04 | 2019-02-12 | 诺基亚技术有限公司 | The measuring configuration of heterogeneous network |
| WO2013189340A3 (en) * | 2013-05-30 | 2014-05-01 | 中兴通讯股份有限公司 | Method for implementing soft handover based on carrier aggregation technology, base station, and terminal |
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| WO2011000268A1 (en) | 2011-01-06 |
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