CN101938774B - Methods for measurement and reporting in carrier aggregation - Google Patents
Methods for measurement and reporting in carrier aggregation Download PDFInfo
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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 meet mobility requirement, as subscriber equipment (User Equipment, be called for short UE) after certain community and network connect, UE still needs the signal quality of its Serving cell and neighbor cell to measure, to select suitable community to switch.With evolved Universal Terrestrial Radio Access Network network (Evolved Universal Terrestrial Radio Access Network, referred to as EUTRAN) be example, the detailed process that under connected state, UE measures is: measurement control message is sent to UE by network side, wherein, this measurement control message comprises to be measured mark (measurementidentity, referred to as MID), event type, measuring object and needs the attribute of measuring; UE carries out parameter initialization according to the measurement mark of measuring in control message, and obtains each measuring object in whole measuring objects of measuring in control message attribute and measurement result separately; UE carries out event assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object, and the duration that meets the entry condition of measurement event by assessing in definite whole measuring objects is more than or equal to the measuring object of scheduled measurement triggered time length (Time To Trigger, referred to as TTT); The measuring object (now measuring object has corresponded to community) that these are met event entry condition by UE is put into the cell list (cellsTriggeredList) of measurement mark corresponding to this event; UE generates measurement report and measurement report is sent to network side according to the measurement result of definite measuring object, and the measuring object comprising in measurement report is all to obtain the cell list identifying from measurement corresponding to this event.
In mobile communication system, measuring object is taking frequency or the cell set that is positioned at frequency as unit, measuring configuration comprises and (for example measures form that mark, measuring object, measurement report, Event triggered or periodic report) etc., wherein, measure mark and report structure (reporting configuration corresponding to a certain measuring object (measurement object) and specific measurement, represent the attribute reporting), the different measuring of same measuring object reports measurement mark corresponding to structure.For the measurement configuration of event type, measurement reports structure and measurement event corresponding (now measure mark described a measuring object and corresponding measurement event with it) one by one, and the current measurement event defining generally comprises the lag parameter Hys of the entry condition of event, the certain threshold Thresh that leaves condition, event, event, the duration of entry condition and the side-play amount Offset of event etc. of event.
In order to meet the mobility requirement of UE under connected state, require UE to measure and report to Serving cell and adjacent cell the measuring object that meets event entry condition, some measurement event to Serving cell are defined at present, for example, the signal quality that the entry condition of definition measurement event is 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 cell, for example, the signal quality that the entry condition of definition measurement event is adjacent cell is higher than a certain threshold value, or the signal quality of adjacent cell is than the high predetermined side-play amount of the signal quality of current service cell.
For the measurement report of Event triggered, there are two kinds to report form: one is that Event triggered single reports the measurement report of Event triggered (or be called); Another kind is that Event triggered periodically reports.Event triggered single reports and refers to that network side is the entry condition that certain UE has configured event, UE detects and assesses after the entry condition that measuring object meets event, the measuring object that meets event entry condition is put into the cell list of measurement mark corresponding to this event, only report one-shot measurement report, the measuring object that this report comprises all obtains from cell list.If in certain time below, there is again new measuring object to meet the entry condition of this event, UE puts into new measuring object the cell list of measurement mark corresponding to this event, again report new measurement report simultaneously, the measuring object that new measurement report comprises all obtains from cell list now, now reports number of times still for once.
Event triggered periodically reports and refers to that network side is the entry condition that certain UE has configured event, UE detects and assesses after the entry condition that measuring object meets event, the measuring object that meets event entry condition is put into the cell list of measurement mark corresponding to this event, repeatedly reporting measurement reports, the number of times and the time interval that report configure by network side, and the measuring object that the measurement report at every turn reporting comprises is all to obtain from the current cell list giving the correct time.In the process repeatedly reporting at this or repeatedly report after end, if there is new measuring object to meet the entry condition of event, replacement is reported number of times by UE, new measuring object is put into the cell list of measurement mark corresponding to this event, then according to the time interval of setting with report number of times orderly reporting measurement result again, the measuring object that each measurement report comprises is all to obtain from the current cell list giving the correct time.
To the measurement of measuring object, different systems adopts different method of measurement, is all signal qualitys of reflection community.In LTE, that UE measures is power (the ReferenceSignal Received Power of the reference signal that receives, referred to as RSRP, unit is dBm) or quality (the Reference Signal Received Quality of the reference signal that receives of UE, referred to as RSRQ, 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 after 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 need to compare the measurement result of same type in the time comparing the signal quality of different districts.In the time that assessment measuring object meets event entry condition, the complete description of this measuring object is not only comprised to RSRP or the RSRQ that UE records, also comprise the specific side-play amount of frequency (the frequency specificoffset of this measuring object, be called for short Ofn), the specific side-play amount in community (cell specific offset, be called for short Ocn), taking the A4 event that defines in LTE as example: entry condition is as the signal quality of adjacent cell is higher than a certain threshold value, its concrete mathematical description is Mn+Ofn+Ocn-Hys > Thresh, in formula, Mn is RSRP or the RSRQ that UE records adjacent cell.
In order to meet people to the demand of high bandwidth more, LTE Advance proposes to adopt the method for carrier aggregation to realize the object of larger bandwidth, now by multiple continuous or discrete carrier waves, (each carrier wave is called component carrier in Yi Ge community, Component Carrier) composition, 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 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 community (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 community; If multiple component carriers all can transmitting system message, beep-page message etc., now just there is no the specific anchor carrier wave in community of typical meaning, 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, multiple 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 refers to that each component carrier is interconnective on frequency domain; Discrete carrier aggregation refers to it between each component carrier, on frequency domain, is unconnected.Carrier aggregation by each component carrier whether in identical frequency band, can be divided into the carrier aggregation of single band (single band) and the carrier aggregation across frequency band (over multiple frequency bands), so-called single carrier aggregation refers to that all component carriers that participate in carrier aggregation are all in same frequency band, and single carrier aggregation can be that continuous carrier aggregation can be also discrete carrier aggregation; What is called refers to that across the carrier aggregation of frequency band the component carrier that participates in carrier aggregation can be derived from different frequency bands.
In carrier aggregation, still need to meet mobility demand, still needing network side is that UE implements to measure configuration, but in the measurement of existing LTE configuration the configuration of many measurement event (to only have a carrier wave) all taking Serving cell be measurement target or references object, adopt the community of carrier aggregation to have multiple carrier waves, existing measurement configuration can not be applied to the sight of multicarrier, therefore in LTE-A, UE works in the situation of multicarrier, How to choose 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 to propose a kind of measure and report in carrier aggregation method, solves existing agreement and cannot be applied to the problem of the sight of multicarrier.
In order to solve the problems of the technologies described above, the invention provides a kind of method of measuring in carrier aggregation, comprising:
Subscriber equipment receives the measurement configuration of sending described base station, and described measurement configuration packet is containing the measurement event that is applied to witness mark component carrier;
Described subscriber equipment is determined described witness mark component carrier, and described witness mark component carrier is measured and measurement event assessment.
Further, said method also can have following characteristics:
Described witness mark component carrier is one or more, if described witness mark component carrier is multiple, subscriber equipment is measured respectively described multiple witness mark component carriers.
Further, said method also can have following characteristics:
Described subscriber equipment in the community of base station jurisdiction carrier aggregation in connection status, described witness mark component carrier is: the carrier wave collection of the community of described carrier aggregation or the carrier wave of described subscriber equipment are concentrated all or part of descending carrier, or is the equilibrium of the carrier wave collection of community or the carrier wave collection of described subscriber equipment of described carrier aggregation.
Further, said method also can have following characteristics:
The equilibrium of described carrier wave collection specifically refers to: 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 configures and informs described subscriber equipment by described base station, or 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;
Or the information of witness mark component carrier described in described subscriber equipment is informed in described base station;
Or 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 refers to:
Described base station and the described subscriber equipment successful downlink component carrier of the random access of subscriber equipment of making an appointment is that the specific anchor carrier wave in witness mark component carrier or the community of making an appointment is that the specific anchor carrier wave of 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 witness mark component carrier.
Further, said method also can have following characteristics:
The information of witness mark component carrier described in described subscriber equipment is informed in described base station, specifically refers to:
The information that corresponding described witness mark component carrier is carried respectively in described base station in described each measurement configuration, or described base station informs that in space interface signaling the information of described subscriber equipment witness mark component carrier or described base station inform the information of witness mark component carrier described in described subscriber equipment in system message.
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 measurement event assessment, if there are new one or more measuring objects all to meet the entry condition of described measurement event in lasting scheduled measurement triggered time length, trigger reporting measurement reports, subscriber equipment carries the information of witness mark component carrier in described measurement report, sends to base station.
Further, said method also can have following characteristics:
Described new measuring object refers to: be not included in the measuring object in cell list corresponding to described measurement event.
Further, said method also can have following characteristics:
The information of described witness mark component carrier is 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 refers to: the signal quality of neighbor cell or adjacent carrier than the signal quality of the high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier lower than the signal quality of predetermined threshold and neighbor cell or adjacent carrier higher than predetermined threshold.
In order to solve the problems of the technologies described above, the present invention also provides a kind of method that in carrier aggregation, measurement reports, and comprising:
When 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 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 described reporting measurement report by user equipment, described subscriber equipment receives the measurement configuration of sending described base station, and described measurement configuration packet contains the measurement event with the comparison of witness mark component carrier;
Described subscriber equipment is selected described witness mark component carrier, and described witness mark component carrier is measured and measurement event assessment.
Further, said method also can have following characteristics:
Described and the measurement event comparison of witness mark component carrier specifically refer to: the signal quality of neighbor cell or adjacent carrier than the signal quality of the high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier lower than the signal quality of predetermined threshold and neighbor cell or adjacent carrier higher than predetermined threshold.
Further, said method also can have following characteristics:
Described subscriber equipment is in the community of base station jurisdiction carrier aggregation in connection status, and described witness mark component carrier is: the carrier wave of the community of described carrier aggregation is concentrated all or part of descending carrier, or 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 refers to: the measurement result of the part or all of descending carrier of the community of described subscriber equipment to carrier aggregation is weighted summation.
Further, said method also can have following characteristics:
The weight coefficient of each descending carrier that described carrier wave is concentrated configures and informs described subscriber equipment by described base station, or 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:
When described subscriber equipment measurement event assessment, if there are new one or more measuring objects all to meet the entry condition of described measurement event in lasting scheduled measurement triggered time length, trigger reporting measurement reports.
Further, said method also can have following characteristics:
Described new measuring object refers to: be not included in the measuring object in cell list corresponding to described measurement event.
Adopt method provided by the invention, solved the ambiguity to Serving cell in carrier aggregation, not only compatible measurement configuration in existing protocol, and meet ambulant demand in carrier aggregation.
Brief description of the drawings
Fig. 1 is the flow chart of the embodiment of the present invention;
Fig. 2 is the network topology schematic diagram of the LTE Advance system of application example of the present invention.
Embodiment
In the present invention, UE in the community of base station jurisdiction carrier aggregation in connection status, when receiving after the measurement configuration of sending base station, this UE determines witness mark component carrier corresponding to measurement event in measurement configuration, witness mark component carrier is measured, and described witness mark component carrier is measured and measurement event assessment.
When described UE carries out measurement event assessment, if there are new one or more measuring objects all to meet the entry condition of described measurement event in the lasting TTT time, trigger reporting measurement reports, in described measurement report, carry the information of witness mark component carrier.
Below in conjunction with drawings and the specific embodiments, the present invention is described in detail.
As shown in Figure 1, the embodiment of the present invention comprises the steps:
Particularly, in described measurement configuration, comprise the measurement event that is applied to witness mark component carrier, refer to: with the measurement event of witness mark component carrier comparison;
Described and the measurement event comparison of witness mark component carrier specifically refer to: the signal quality of neighbor cell or adjacent carrier than the signal quality of the high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier lower than the signal quality of predetermined threshold and neighbor cell or adjacent carrier higher than predetermined threshold;
Described UE determines witness mark component carrier corresponding to measurement event in measurement configuration, comprise following several mode: described base station and the described subscriber equipment described witness mark component carrier of having made an appointment, or the information of witness mark component carrier described in described subscriber equipment is informed in described base station, or by UE State selective measurements reference component carrier wave;
Described base station and the described subscriber equipment successful downlink component carrier of the random access of subscriber equipment of making an appointment is that the specific anchor carrier wave in witness mark component carrier or the community of making an appointment is that the specific anchor carrier wave of 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 witness mark component carrier.
The information of witness mark component carrier described in described subscriber equipment is informed in described base station, specifically refers to:
The information that corresponding described witness mark component carrier is carried respectively in described base station in described each measurement configuration, or described base station informs that in space interface signaling the information of described subscriber equipment witness mark component carrier or described base station inform the information of witness mark component carrier described in described subscriber equipment in system message.
Wherein, UE receives after described measurement configuration, judges and measures in configuration whether comprise the measurement event that is applied to witness mark component carrier, be applied to the measurement event of witness mark component carrier if comprise, just State selective measurements reference component carrier wave, otherwise, without State selective measurements reference component carrier wave;
Described UE State selective measurements reference component carrier wave, specifically refers to: UE selects the carrier wave of the community of described carrier aggregation to concentrate one or more carrier waves as witness mark component carrier, or selects the equilibrium of carrier wave collection as witness mark component carrier;
Described UE selects the equilibrium of carrier wave collection as witness mark component carrier, specifically refers to: the measurement result of the part or all of carrier wave of the community of described UE to carrier aggregation is weighted summation;
Preferably, described UE selects the equilibrium that activates carrier wave as witness mark component carrier;
The weight coefficient of each carrier wave that described carrier wave is concentrated configures and informs described UE by described base station, or 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 measurement event assessment, if there are new one or more measuring objects all to meet the entry condition of described measurement event in the lasting TTT time, trigger reporting measurement reports, UE carries the information of witness mark component carrier in described measurement report, sends to base station;
Described new measuring object refers to: be not included in the measuring object in cell list corresponding to described measurement event;
The information of witness mark component carrier is used for informing which carrier wave of base station is witness mark component carrier, can be frequency or the carrier index etc. of witness mark component carrier.
Preferably, described UE also carries the measurement result of witness mark component carrier in described measurement report, sends to base station.
With concrete application example, the present invention is further described below:
Application example one
In LTE Advance system, referring to Fig. 2, there is S1 interface between core net and base station (macro base station) in the schematic diagram of its network topology, between adjacent base station, has X2 interface; Home eNodeB can directly be connected with core net, also can be connected with core net by femto gateway, between Home eNodeB and between Home eNodeB and macro base station, there is no X2 interface.UE is arranged in the community of macro base station (or Home eNodeB) jurisdiction carrier aggregation, in idle condition.The component carrier that the community of this carrier aggregation comprises, in frequency band 1 (Band 1, up UL 1920～1980M Hz, descending DL 2110～2170M Hz), is the component carrier of three continuous 20M Hz.The equal transmitting system message of these three carrier waves, beep-page message.
Sometime, UE initiates access at random at component carrier (UL 1920～1940, DL 2110～2130), successfully accesses the community of this carrier aggregation.Because UE supports that the service traffics of multicarrier and UE are very large, base station is again for UE has distributed component carrier (UL 1940～1960, DL 2130～2150), now UE uses two component carriers simultaneously, is called two service carrier waves or two activation carrier waves.
Receive in the UE of connected state the measurement configuration that base station sends, measure in configuration and comprise:
Measure mark 1 respective frequencies f1 and measurement event A3, now the entry condition of A3 is that the signal quality of the neighbor cell (being adjacent carrier for the neighbor cell of carrier aggregation) that is positioned at frequency f 1 is than the predetermined side-play amount of signal quality height of witness mark component carrier (being Serving cell in non-carrier aggregation subdistrict);
Measure mark 2 respective frequencies f2 and measurement event A5, now the entry condition of A5 be the signal quality of the neighbor cell (being adjacent carrier for the neighbor cell of carrier aggregation) that is positioned at frequency f 2 higher than the signal quality of predetermined threshold value (Threshold1) and witness mark component carrier lower than predetermined threshold value (Threshold2).
UE receives and measures after configuration, and measurement mark is wherein carried out to parameter initialization, and obtains each measuring object in whole measuring objects of measuring in configuration attribute and measurement result separately; UE carries out event assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.In configuring if measure, comprise the measurement event with the comparison of witness mark component carrier, witness mark component carrier corresponding to UE State selective measurements event, because UE now has two to activate carrier wave, UE selects carrier wave (DL2110～2130) for measuring mark 1 and the witness mark component carrier of measuring mark 2 corresponding measurement event, assessment meets the measuring object (duration is equal to or greater than TTT) of event entry condition, triggers reporting measurement reports.
Sometime, UE finds that it (is that the signal quality of community 1 is than the high predetermined side-play amount of the signal quality of witness mark component carrier (DL2110～2130) that the neighbor cell (community 1) in frequency f 1 all meets the entry condition of event A3 within the TTT time, the measurement result of the signal quality of community 1 has been passed through the smoothing processing (filtering) of layer 3), and community 1 is not in the cell list of measurement mark 1 correspondence, UE generates the measurement report of measuring mark 1 according to rule, and measurement report is sent to base station.In this measurement report, the information that comprises the witness mark component carrier that measurement event A3 compared, can indicate witness mark component carrier by frequency or carrier index.In this measurement report, also comprise the measurement result of witness mark component carrier.
It should be noted that, network, in the time of allocating and measuring event, can configure: with the event of witness mark component carrier comparison; Do not need the event of comparison.With the event of witness mark component carrier comparison such as event A3, A5, B2; Do not need event A1, A2, A4, the B1 of comparison.Need clear and definite witness mark component carrier for A3, A5, B2 event.In this example, all adopt same activation carrier wave as witness mark component carrier for measuring mark 1 and measuring mark 2, UE can select different activation carrier waves as witness mark component carrier to different measurement marks (measurement event that may be corresponding identical), also can select unactivated carrier wave (in this example as DL 2150～2170) for witness mark component carrier, UE only need to indicate the information of corresponding witness mark component carrier in the measurement report reporting.If UE is reporting measurement mark 1 and the measurement report of measuring mark 2 simultaneously, UE indicates respectively the information of the witness mark component carrier adopting separately.
Application example two
In LTE Advance system, referring to Fig. 2, there is S1 interface between core net and base station (macro base station) in the schematic diagram of its network topology, between adjacent base station, has X2 interface; Home eNodeB can directly be connected with core net, also can be connected with core net by femto gateway, between Home eNodeB and between Home eNodeB and macro base station, there is no X2 interface.UE is arranged in the community of Home eNodeB jurisdiction carrier aggregation, in connection status.The component carrier that the community of this carrier aggregation comprises is at frequency band 1 (Band 1, 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.In these four carrier waves, only have three component carrier transmitting system message, beep-page message in Band 1.
Now UE is operated in component carrier (UL 1920～1940 simultaneously, DL 2110～2130, this carrier wave is called CC1), (UL 1940～1960, DL 2130～2150, this carrier wave is called CC2) and (this carrier wave is called CC3 for UL1850～1870M Hz, DL 1930～1950), now UE uses three component carriers simultaneously, is called three service carrier waves or three activation carrier waves.It should be noted that, network can configure carrier aggregation subdistrict and have asymmetric up-downgoing carrier number, such as 4 descending carriers, and 2 up-link carriers, network does not indicate up-downgoing carrier wave to UE configuring time division.
In the measurement configuration that network sends to UE, comprise and measure mark 1, measure mark 2 and measure mark 3.
Measure mark 1 respective frequencies f1 and measurement event A3, now the entry condition of A3 is to be positioned at the signal quality of neighbor cell of frequency f 1 than the predetermined side-play amount of signal quality height of witness mark component carrier;
Measure mark 2 respective frequencies f2 and measurement event A3, now the entry condition of A3 is to be positioned at the signal quality of neighbor cell of frequency f 2 than the predetermined side-play amount of signal quality height of witness mark component carrier;
Measure mark 3 corresponding target frequency f3 and measurement event A5, now the entry condition of A5 be the signal quality of the neighbor cell (being adjacent carrier for the neighbor cell of carrier aggregation) that is positioned at frequency f 3 higher than the signal quality of predetermined threshold value (Threshold1) and witness mark component carrier lower than predetermined threshold value (Threshold2).
UE receives and measures after configuration, and measurement mark is wherein carried out to parameter initialization, and obtains each measuring object in whole measuring objects of measuring in configuration attribute and measurement result separately; UE carries out event assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.In configuring if measure, comprise the measurement event with the comparison of witness mark component carrier, UE determines the witness mark component carrier that measurement event is corresponding, in the present embodiment, the witness mark component carrier that UE State selective measurements event is corresponding, because UE now has three to activate carrier wave, UE selects carrier wave CC1 (DL 2110～2130) for measuring mark 1 and the witness mark component carrier of measuring mark 2 corresponding measurement event A3, UE measures witness mark component carrier CC1, utilize the assessment of reference component carrier wave to meet the measuring object (duration is equal to or greater than TTT) of event (A3) entry condition simultaneously, trigger reporting measurement reports.UE selects carrier wave CC3 (DL 1930～1950) for measuring the witness mark component carrier of mark 3 corresponding measurement event A5, UE measures witness mark component carrier CC3, utilize reference component carrier wave CC3 assessment to meet the measuring object (duration is equal to or greater than TTT) of event (A5) entry condition simultaneously, trigger reporting measurement reports.
Sometime, UE finds that the neighbor cell (community 1) in frequency f 1 all meets the entry condition of event A3 (being that the signal quality of community 1 is than the high predetermined side-play amount of the signal quality of witness mark component carrier (DL2110～2130)) within the TTT time, and community 1 is not in the cell list of measurement mark 1 correspondence, UE generates the measurement report of measuring mark 1 according to rule, and measurement report is sent to base station.In this measurement report, the information that comprises the witness mark component carrier that measurement event A3 compared, can indicate witness mark component carrier by frequency or carrier index (CC1).Because measure for downlink reference signal, therefore only need in measurement report, indicate downstream frequency, if up-downgoing component carrier is one to one, also can indicate with uplink carrier frequency, or up-downgoing frequency is all included in measurement report.In this measurement report, also comprise the measurement result of witness mark component carrier.
Spend a period of time, UE finds that the neighbor cell (community 2) in frequency f 3 all meets the entry condition of event A5 within the TTT time, and community 2 is not in the cell list of measurement mark 3 correspondences, UE generates the measurement report of measuring mark 3 according to rule, and measurement report is sent to base station.In this measurement report, the information that comprises the witness mark component carrier that measurement event A5 compared, can indicate witness mark component carrier by frequency or carrier index (CC3).Base station is implemented the scheduling to UE or makes handover decisions according to measurement report.
Application example three
In LTE Advance system, referring to Fig. 2, there is S1 interface between core net and base station (macro base station) in the schematic diagram of its network topology, between adjacent base station, has X2 interface; Home eNodeB can directly be connected with core net, also can be connected with core net by femto gateway, between Home eNodeB and between Home eNodeB and macro base station, there is no X2 interface.UE is arranged in the community of base station jurisdiction carrier aggregation, in connection status.The component carrier that the community of this carrier aggregation comprises is at frequency band 1 (Band1, UL 1920～1980M Hz, DL 2110～2170M Hz) and frequency band 2 (Band 2, UL1850～1870M Hz, DL 1930～1970) in, descending is the component carrier of 5 discontinuous 20M Hz, and up is the component carrier of 4 discontinuous 20M Hz.In these five descending carriers, only have three component carrier transmitting system message, beep-page message in Band 1.
Now UE is operated in component carrier (UL 1920～1940 simultaneously, DL 2110～2130, this carrier wave is called CC1), (UL 1940～1960, DL 2130～2150, this carrier wave is called CC2) and (this carrier wave is called CC3 for UL1850～1870M Hz, DL 1930～1950), now UE uses three component carriers simultaneously, is called three service carrier waves or three activation carrier waves.
Base station sends and measures configuration (by RRC Connection Reconfiguration) to UE, measures in configuration and comprises and measure mark 1 and measure mark 2:
Measure mark 1 respective frequencies f1 and measurement event A3, now the entry condition of A3 is to be positioned at the signal quality of neighbor cell of frequency f 1 than the predetermined side-play amount of signal quality height of witness mark component carrier;
Measure mark 2 respective frequencies f2 and measurement event A3, now the entry condition of A3 is to be positioned at the signal quality of neighbor cell of frequency f 2 than the predetermined side-play amount of signal quality height of witness mark component carrier.
UE receives and measures after configuration, and measurement mark is wherein carried out to parameter initialization, and obtains each measuring object in whole measuring objects of measuring in configuration attribute and measurement result separately; UE carries out event assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.In this application example, it is the equilibrium of all lower line activating carrier waves (CC1, CC2 and CC3) that network configures witness mark component carrier corresponding to instruction measurement event by measurement, network side (base station) for the each lower line activating carrier wave of UE configured weighting parameters (by system message or by space interface signaling as reshuffled signaling), be respectively K1, K2, K3, UE is using the weighted sum of the measurement result of these three carrier waves as witness mark component carrier.It should be noted that it is witness mark component carrier that UE also can oneself select all lower line activating carrier waves, UE adopts the weighting parameters of acquiescence.UE carries out event assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.UE measures lower line activating carrier wave and obtains the measurement result of witness mark component carrier, and utilizes this outcome evaluation to meet the measuring object of measurement event entry condition, and UE generates measurement report according to rule, and measurement report is sent to base station.
Sometime, UE finds that the neighbor cell (community 1) in frequency f 1 all meets the entry condition of event A3 (being that the signal quality of community 1 is than the high predetermined side-play amount of the signal quality of witness mark component carrier) within the TTT time, and community 1 is not in the cell list of measurement mark 1 correspondence, UE generates the measurement report of measuring mark 1 according to rule, and measurement report is sent to 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 base station, so measurement report needn't comprise the frequency information of the witness mark component carrier that measurement event A3 compared.Base station is implemented the scheduling to UE or makes handover decisions according to measurement report.
It should be noted that, in the present embodiment, 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 in Serving cell, adopt the result after equilibrium to represent witness mark component carrier, in the measurement report now reporting, needn't comprise the information of witness mark component carrier.Or UE oneself selects the part or all of descending carrier in the descending activation carrier wave of part or current all component carriers in Serving cell, adopt the result after equilibrium to represent witness mark component carrier, in the measurement report now reporting, comprise the information of witness mark component carrier, as the frequency of each descending carrier or carrier index, measurement result, if special UE adopts the equilibrium of all component carriers of all activated carrier wave or current service cell can not indicate the information of these component carriers, adopt the stipulated form of certain acquiescence.
Application example four
In LTE Advance system, referring to Fig. 2, there is S1 interface between core net and base station (macro base station) in the schematic diagram of its network topology, between adjacent base station, has X2 interface; Home eNodeB can directly be connected with core net, also can be connected with core net by femto gateway, between Home eNodeB and between Home eNodeB and macro base station, there is no X2 interface.UE is arranged in the community of Home eNodeB jurisdiction carrier aggregation, in idle condition.The component carrier that the community of this carrier aggregation comprises is at frequency band 1 (Band 1, 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.In these four carrier waves, only have three component carrier transmitting system message, beep-page message in Band 1.
Sometime, UE initiates access at random at component carrier (this carrier wave is called CC1 for UL 1920～1940, DL 2110～2130), successfully accesses the community of this carrier aggregation.Because UE supports that the service traffics of multicarrier and UE are very large, base station is again for UE has distributed component carrier (UL 1940～1960, DL 2130～2150, this carrier wave is called CC2) and (UL 1850～1870M Hz, DL 1930～1950, this carrier wave is called CC3), now UE uses three component carriers simultaneously, is called three service carrier waves or three activation carrier waves.
Owing to being carrier aggregation across frequency band, and in each frequency band, each component carrier has identical coverage, so base station downlink component carrier of each frequency band selection is as witness mark component carrier, base station sends and measures configuration (by RRC Connection Reconfiguration) to UE, this measurement configuration packet is containing 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 configuration, ARFCN-ValueEUTRA) (if up-downgoing carrier number is asymmetric, can only use the frequency representation of descending carrier), or indicate be first and second downlink component carrier (from low to high, adopt carrier index index to represent), certain carrier wave that also can adopt the method (mode of making an appointment) of implicit expression to set different frequency band (Band) is witness mark component carrier (such as can be that the carrier wave that Band 1 and Band 2 frequencies are minimum is witness mark component carrier herein, i.e. CC1 and CC3), if a witness mark component carrier is only set, the specific anchor carrier wave in community or the specific anchor carrier wave of user being set or measuring main carrier of can arranging is witness mark component carrier, now measures the independent information that does not just comprise witness mark component carrier in configuration.Measure in configuration and comprise:
Measure mark and 1 be exclusively used in witness mark component carrier CC1, respective frequencies f1 and event A3, now the entry condition of A3 is to be positioned at the signal quality of neighbor cell of frequency f 1 than the predetermined side-play amount of signal quality height of witness mark component carrier CC1;
Measure mark and 2 be exclusively used in witness mark component carrier CC3, respective frequencies f2 and event A3, now the entry condition of A3 is to be positioned at the signal quality of neighbor cell of frequency f 2 than the predetermined side-play amount of signal quality height of witness mark component carrier CC3;
Measure mark 3 and be exclusively used in witness mark component carrier CC1, respective frequencies f3 and event B2, the signal quality of the neighbor cell that is positioned at frequency f 3 that now entry condition of B2 is different system higher than the signal quality of predetermined threshold value (Threshold1) and witness mark component carrier CC1 lower than predetermined threshold value (Threshold2).
UE receives and measures after configuration, and wherein all measurement mark is carried out to parameter initialization, and obtains each measuring object in whole measuring objects of measuring in configuration attribute and measurement result separately; UE carries out event assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object.In the present embodiment, measure in configuration and clearly indicated witness mark component carrier, and measure mark 1,2,3 and defined the measurement event that is applied to witness mark component carrier, UE measures witness mark component carrier, utilize the assessment of witness mark component carrier to meet the measuring object (neighbor cell on frequency f 1 or f2 or f3) of event A3, B2 entry condition simultaneously, if there is lasting TTT to meet the measuring object of event entry condition, UE triggers reporting measurement reports.
Sometime, UE finds that the neighbor cell (community 1) in frequency f 1 all meets the entry condition of event A3 (being that the signal quality of community 1 is than the high predetermined side-play amount of the signal quality of witness mark component carrier CC1) within the TTT time, and community 1 is not in the cell list of measurement mark 1 correspondence, UE generates the measurement report of measuring mark 1 according to rule, and measurement report is sent to base station.Because network side knows that measuring mark 1 is applied to witness mark component carrier CC1, therefore UE can adopt existing measurement report, does not need additionally to indicate the information of witness mark component carrier.It should be noted that, the measurement result that now UE also can reporting measurement reference component carrier wave CC1 signal quality is so that base station obtains more information.Base station is implemented the scheduling to UE or makes handover decisions according to measurement report.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (20)
1. a method of measuring in carrier aggregation, comprising:
Subscriber equipment receives the measurement configuration of sending base station, and described measurement configuration packet is containing the measurement event that is applied to witness mark component carrier;
Described subscriber equipment is determined described witness mark component carrier, and described witness mark component carrier is measured and measurement event assessment;
Wherein, described measurement event specifically refers to: the signal quality of neighbor cell or adjacent carrier than the signal quality of the high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier lower than the signal quality of predetermined threshold and neighbor cell or adjacent carrier higher than predetermined threshold.
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 multiple, subscriber equipment is measured respectively described multiple witness mark component carriers.
3. the method for claim 1, is characterized in that,
Described subscriber equipment in the community of base station jurisdiction carrier aggregation in connection status, described witness mark component carrier is: the carrier wave collection of the community of described carrier aggregation or the carrier wave of described subscriber equipment are concentrated all or part of descending carrier, or is the equilibrium of the carrier wave collection of community or the carrier wave collection of described subscriber equipment of described carrier aggregation;
Wherein, the equilibrium of described carrier wave collection specifically refers to: described subscriber equipment is weighted summation to the measurement result of carrier wave concentrated part or whole descending carriers.
4. method as claimed in claim 3, is characterized in that,
The weight coefficient of each descending carrier that described carrier wave is concentrated configures and informs described subscriber equipment by described base station, or by described base station and the subscriber equipment described weight coefficient of having made an appointment.
5. 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.
6. 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;
Or the information of witness mark component carrier described in described subscriber equipment is informed in described base station;
Or select described witness mark component carrier by described subscriber equipment.
7. method as claimed in claim 6, is characterized in that,
Described base station and the described subscriber equipment described witness mark component carrier of having made an appointment, specifically refers to:
Described base station and the described subscriber equipment successful downlink component carrier of the random access of subscriber equipment of making an appointment is that the specific anchor carrier wave in witness mark component carrier or the community of making an appointment is that the specific anchor carrier wave of 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 witness mark component carrier.
8. method as claimed in claim 6, is characterized in that,
The information of witness mark component carrier described in described subscriber equipment is informed in described base station, specifically refers to:
The information that corresponding described witness mark component carrier is carried respectively in described base station in described each measurement configuration, or described base station informs that in space interface signaling the information of described subscriber equipment witness mark component carrier or described base station inform the information of witness mark component carrier described in described subscriber equipment in system message.
9. method as claimed in claim 6, is characterized in that,
If select described witness mark component carrier by described subscriber equipment, when described subscriber equipment carries out measurement event assessment, if there are new one or more measuring objects all to meet the entry condition of described measurement event in lasting scheduled measurement triggered time length, trigger reporting measurement reports, subscriber equipment carries the information of witness mark component carrier in described measurement report, sends to base station.
10. method as claimed in claim 9, is characterized in that,
Described new measuring object refers to: be not included in the measuring object in cell list corresponding to described measurement event.
11. methods as described in claim 6 or 8 or 9, is characterized in that,
The information of described witness mark component carrier is frequency or the carrier index of witness mark component carrier.
12. methods as claimed in claim 9, is characterized in that,
Described subscriber equipment also carries the measurement result of witness mark component carrier in described measurement report.
In 13. 1 kinds of carrier aggregation, measure the method reporting, comprising:
When reporting measurement report by user equipment, described subscriber equipment carries the information of witness mark component carrier in described measurement report;
Wherein, before described reporting measurement report by user equipment, described subscriber equipment receives the measurement configuration of sending described base station, and described measurement configuration packet contains the measurement event with the comparison of witness mark component carrier;
Described subscriber equipment is selected described witness mark component carrier, and described witness mark component carrier is measured and measurement event assessment;
Described and the measurement event comparison of witness mark component carrier specifically refer to: the signal quality of neighbor cell or adjacent carrier than the signal quality of the high predetermined side-play amount of the signal quality of described witness mark component carrier or described witness mark component carrier lower than the signal quality of predetermined threshold and neighbor cell or adjacent carrier higher than predetermined threshold.
14. methods as claimed in claim 13, is characterized in that,
The information of described witness mark component carrier is frequency or the carrier index of witness mark component carrier.
15. methods as claimed in claim 13, is characterized in that,
Described subscriber equipment also carries the measurement result of witness mark component carrier in described measurement report.
16. methods as claimed in claim 13, is characterized in that,
Described subscriber equipment is in the community of base station jurisdiction carrier aggregation in connection status, and described witness mark component carrier is: the carrier wave of the community of described carrier aggregation is concentrated all or part of descending carrier, or is the equilibrium of the carrier wave collection of described subscriber equipment;
Wherein, the equilibrium of the carrier wave collection of described subscriber equipment specifically refers to: the measurement result of the part or all of descending carrier of the community of described subscriber equipment to carrier aggregation is weighted summation.
17. methods as claimed in claim 16, is characterized in that,
The weight coefficient of each descending carrier that described carrier wave is concentrated configures and informs described subscriber equipment by described base station, or by described base station and the subscriber equipment described weight coefficient of having made an appointment.
18. methods as claimed in claim 16, is characterized in that,
Described witness mark component carrier is: all or part of in the downlink component carrier that described subscriber equipment uses.
19. methods as claimed in claim 13, is characterized in that,
When described subscriber equipment measurement event assessment, if there are new one or more measuring objects all to meet the entry condition of described measurement event in lasting scheduled measurement triggered time length, trigger reporting measurement reports.
20. methods as claimed in claim 19, is characterized in that,
Described new measuring object refers to: be not included in the measuring object in cell list corresponding to described measurement event.
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| 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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| CN102307086B (en) * | 2011-08-19 | 2017-03-15 | 中兴通讯股份有限公司 | Based on method and communication terminal that carrier aggregation technology realizes mixed communication |
| DE202011109491U1 (en) | 2011-11-24 | 2012-11-27 | BLüCHER GMBH | Fiber-reinforced composite moldings with adsorptive properties |
| CN103428748B (en) * | 2012-05-17 | 2017-06-13 | 华为技术有限公司 | A kind of band measurement method, equipment and system |
| WO2014163644A1 (en) * | 2013-04-04 | 2014-10-09 | Nokia Corporation | Measurement configuration for heterogenous networks |
| CN104219723B (en) * | 2013-05-30 | 2019-08-27 | 南京中兴软件有限责任公司 | A kind of method and base station, terminal for realizing soft handover based on carrier aggregation technology |
| JP6219110B2 (en) * | 2013-09-26 | 2017-10-25 | 株式会社Ｎｔｔドコモ | Radio base station, user terminal, and communication control method |
| CN110351762B (en) * | 2018-04-04 | 2021-10-26 | 华为技术有限公司 | Measuring method and device |
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