CN102685795B - The collocation method that a kind of RRM RRM measures - Google Patents
The collocation method that a kind of RRM RRM measures Download PDFInfo
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Abstract
The invention discloses the collocation method that a kind of RRM measures, the method is applied to the scene introducing newly-increased carrier type, it is characterized in that, base station is newly-increased carrier type configuration CSI-RS information; Base station selection CSI-RS information, is configured for the CSI-RS function cell of the measurement object of the CSI-RS information selected by instruction, allocating and measuring report condition; Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE; The CSI-RS information of the CSI-RS function cell that UE notifies according to base station and correspondence is measured accordingly; When satisfied measurement report condition, UE sends corresponding measurement report to base station, and the measurement report that base station sends according to UE processes accordingly.Method provided by the invention can solve the problem of carrying out RRM measurement under the scene introducing newly-increased carrier wave.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the collocation method that a kind of RRM RRM measures.
Background technology
In the multi-carrier polymerizing CA of LTE Release 11, introduce newly-increased carrier type (NCT, New Carrier Type).From RAN 1 angle, the main purpose introducing NCT for carrier aggregation improves spectrum efficiency and energy efficiency, improve the tenability of heterogeneous network HetNet scene, better support inter-machine communication scene and enhanced multimedia broadcast multicast service (eMBMS, EnhancedMultimedia Broadcast Multicast Service) business etc.
At present, for the polymerization in LTE Rel-10 between convention carrier, be all carry out RRM measurement by CRS reference signal, also bring the problems such as energy efficiency is low, HetNet scene interference coordination effect is bad thereupon.If newly-increased carrier type also uses CRS to carry out RRM measurement, then reference signal expense is large and can not carry out interference coordination neatly.And carry out synchronous and RRM measurement based on existing CSI-RS reference signal and still require study, and for the collocation method that its RRM measures, also do not discuss at present.
Summary of the invention
The invention provides the collocation method that a kind of RRM RRM measures, carry out the problem of RRM measurement under increasing the scene of carrier type newly to solve introducing in prior art.
The invention discloses the collocation method that a kind of RRM RRM measures, the method is applied to the scene introducing newly-increased carrier type, and it is characterized in that, the method comprises:
Base station is newly-increased carrier type configurating channel state instruction reference signal CSI-RS information;
Base station selection CSI-RS information, is configured for the CSI-RS function cell of the measurement object of the CSI-RS information selected by instruction, allocating and measuring report condition; Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE;
The CSI-RS information of the CSI-RS function cell that UE notifies according to base station and correspondence is measured accordingly;
When satisfied measurement report condition, UE sends corresponding measurement report to base station, and the measurement report that base station sends according to UE processes accordingly.
In the above-mentioned methods, the measurement object of CSI-RS information comprises: RSRP measurement, CSI feedback, interferometry, auxiliary cell management;
Described CSI-RS function cell comprises the bit of more than 2, by the different measurement object of the different conditions value mark CSI-RS information of bit.
In the above-mentioned methods, selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE to comprise:
The corresponding cell index PCI of CSI-RS information of a newly-increased carrier type;
The CSI-RS information of all newly-increased carrier types is broadcasted by system information block SIB2 in base station; UE, by the resident reading in community SIB2, obtains the CSI-RS information of all newly-increased carrier types and is kept at this locality;
Cell index corresponding to selected CSI-RS information, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE by base station;
The PCI that UE sends according to base station, searches corresponding CSI-RS information in this locality.
In the above-mentioned methods, described by selected CSI-RS information, the corresponding CSI-RS function cell configured with measure report condition and inform to UE and comprise:
Selected CSI-RS information, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE.
In the above-mentioned methods, described by selected CSI-RS information, the corresponding CSI-RS function cell configured with measure report condition and inform to UE and comprise:
Base station arranges CSI-RS index-mapping table, is each CSI-RS information configuration call number in this CSI-RS index-mapping table;
Described CSI-RS index-mapping table is broadcasted by SIB2 in base station, and UE, by the resident reading in community SIB2, obtains described CSI-RS index-mapping table and is kept at this locality;
Corresponding call number is searched according to selected CSI-RS information in base station in described CSI-RS index-mapping table, and found call number, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE;
The call number that UE sends according to base station, finds corresponding CSI-RS information in the CSI-RS index-mapping table that this locality is preserved.
In the above-mentioned methods, described by selected CSI-RS information, the corresponding CSI-RS function cell configured with measure report condition and inform to UE and comprise:
Configure CSI-RS index-mapping table in the protocol, be each CSI-RS information configuration call number in described CSI-RS index-mapping table;
Corresponding call number is searched according to selected CSI-RS information in base station in described CSI-RS index-mapping table, and found call number, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE;
The call number that UE sends according to base station, finds corresponding CSI-RS information in the CSI-RS index-mapping table preserved in the protocol.
In the above-mentioned methods, the CSI-RS information of the CSI-RS function cell that notifies according to base station of UE and correspondence is carried out corresponding measurement and is comprised:
When the measurement object indicated by described CSI-RS function cell is RSRP measurement, UE measures according to the received signal strength signal intensity of CSI-RS information to neighbor cell;
When the measurement object indicated by described CSI-RS function cell is CSI feedback, UE carries out CSI estimation according to received CSI-RS information, and by the CSI feedback that obtains to base station;
When the measurement object indicated by described CSI-RS function cell is interferometry, UE by after the transmitted power zero setting of the CSI-RS reference signal of this community, according to the interference power of the neighbor cell of received CSI-RS information measurement same position;
When the measurement object indicated by described CSI-RS function cell is auxiliary cell management, UE carries out auxiliary cell management according to measuring the RSRP/RSRQ measured value obtained to newly-increased carrier type.
In the above-mentioned methods, described allocating and measuring report condition comprises:
Base station carries out measuring the threshold value reported according to CSI-RS function cell configuration UE,
When UE carry out measured value that CSI-RS RRM measurement obtains meet default threshold value time, then UE sends measurement and reports to base station;
Or,
Base station configuration UE carries out measuring the cycle reported, and when UE carries out CSI-RS RRM measurement, sends measurement report every Preset Time to base station.
In the above-mentioned methods, described base station carries out processing accordingly comprising according to the measurement report that UE sends:
When the measurement object indicated by described CSI-RS function cell is RSRP measurement, base station is chosen signal quality according to the RSRP/RSRP measured value that UE reports and is met pre-conditioned neighbor cell;
When the measurement object indicated by described CSI-RS function cell is CSI feedback, the channel quality information in the CSI feedback that base station reports according to UE, configuration data transmission means;
When the measurement object indicated by described CSI-RS function cell is interferometry, the interference power values of the adjacent cell that base station reports according to UE, that estimates this community CSI-RS is disturbed situation;
When the measurement object indicated by described CSI-RS function cell is auxiliary cell management, auxiliary cell management is carried out according to the RSRP/RSRQ measured value of the newly-increased carrier type that UE reports in base station.
In the above-mentioned methods, described base station is carried out corresponding process according to the measurement report that UE sends and is also comprised:
The measurement report that base station sends according to UE, judges whether that the newly-increased carrier type to triggering reported event carries out RSRP/RSRQ measurement, and whether upgrades polymerisable carrier cell; Described judged result is sent to UE by RRC information.
In sum, the invention provides the collocation method that a kind of RRM measures, the method is newly-increased carrier type configurating channel state instruction reference signal CSI-RS information by base station; Base station selection CSI-RS information, is configured for the CSI-RS function cell of the measurement object of the CSI-RS information selected by instruction, allocating and measuring report condition; Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE; The CSI-RS information of the CSI-RS function cell that UE notifies according to base station and correspondence is measured accordingly; When satisfied measurement report condition, UE sends corresponding measurement report to base station, and the mode that corresponding process is carried out according to the measurement report that UE sends in base station carries out RRM measurement.Wherein, measured by the RRM adopting CSI-RS function cell notice UE to carry out different objects, by different modes by the CSI-RS message notice needed for measuring to UE, solve a difficult problem of carrying out RRM measurement under the scene introducing newly-increased carrier type, compensate for the vacancy of prior art.
Accompanying drawing explanation
Fig. 1 is the flow chart of the collocation method that in the present invention, a kind of RRM measures;
Fig. 2 is the signaling process figure that the RRM in the present invention in the first embodiment measures;
Fig. 3 is the signaling process figure that the RRM in the present invention in the second embodiment measures;
Fig. 4 is the signaling process figure that the RRM in the present invention in the 3rd embodiment measures;
Fig. 5 is the signaling process figure that the RRM in the present invention in the 4th embodiment measures.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1 is the flow chart of the collocation method that in the present invention, a kind of RRM measures; Method provided by the invention is applied to the scene introducing newly-increased carrier type, as shown in Figure 1;
Step 101, base station is newly-increased carrier type configurating channel state instruction reference signal CSI-RS information.
Step 102, base station selection CSI-RS information, is configured for the CSI-RS function cell of the measurement object of the CSI-RS information selected by instruction, allocating and measuring report condition; Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE.
Step 103, the CSI-RS information of the CSI-RS function cell that UE notifies according to base station and correspondence is measured accordingly.
Step 104, when satisfied measurement report condition, UE sends corresponding measurement report to base station, and the measurement report that base station sends according to UE processes accordingly.
The newly-increased carrier type mentioned in the present invention is a kind of carrier type being different from LTE Rel 10 and former version definition, mainly discusses in LTE Rel 11 version and determines, and in the carrier aggregation scene of Rel-11 and version later.The community that the community of described newly-increased carrier type depends on convention carrier type is polymerized.
In a step 102, the measurement object of CSI-RS information that base station configures comprises: Reference Signal Received Power RSRP measures, channel status instruction CSI feedback, interferometry, auxiliary community (SCell, Secondary Cell) management; The CSI-RS function cell being used to indicate described CSI-RS information measurement object of base station configuration comprises the bit of more than 2, by the different measurement object of the different conditions value mark CSI-RS information of bit.
In the first embodiment disclosed by the invention, the CSI-RS information of all newly-increased carrier type configured is broadcasted by SIB2 by base station, and the resident rear reading SIB2 in UE community, obtains the CSI-RS information of all newly-increased carrier types and be kept at this locality.Then according to actual deployment demand, choose the CSI-RS information needing the newly-increased carrier type carrying out CSI-RS RRM measurement, the cell index corresponding to it is informed to UE; UE searches corresponding CSI-RS information according to the cell index that base station notifies.Fig. 2 is the signaling process figure that the RRM in the present invention in the first embodiment measures, as shown in Figure 2,
Step 201, CSI-RS information is broadcasted by system information block SIB2 in base station.
In step 201, base station configures a CSI-RS information for each newly-increased carrier type.Wherein, in specific implementation process, a corresponding community of newly-increased carrier type, there is corresponding cell index PCI each community.The CSI-RS information of all newly-increased carrier type that base station will configure, is broadcast to UE by SIB2.
Step 202, UE, after community is resident, by reading SIB2, obtains CSI-RS information.
In step 202., UE resides in the community of convention carrier type, obtains the CSI-RS information of all newly-increased carrier types, and the CSI-RS information of acquisition is kept at this locality by reading SIB2.
Step 203, initiates random access request, sets up RRC between UE with base station and be connected.
Step 204, chooses CSI-RS information.In step 204, the CSI-RS information needing to carry out CSI-RS RRM measurement is chosen in base station according to the situation of actual deployment.
Step 205, base station sends RRC to UE and connects reconfiguration message, connects in reconfiguration message carry cell index, the CSI-RS function cell of the CSI-RS information chosen and measure report condition accordingly at described RRC.
In step 205, the cell index that base station is corresponding according to the CSI-RS information searching chosen.Cell index corresponding to selected CSI-RS information, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE by base station, and namely Parameter transfer is carried out by RRC connection reconfiguration message in base station.Other mode can be chosen in other embodiments of the invention as the case may be, the measurement report condition of cell index, CSI-RS function cell and correspondence corresponding to the CSI-RS information chosen is sent to UE.
Wherein, the measurement report condition of described correspondence is specially: the threshold value sending measurement report is carried out according to CSI-RS function cell configuration UE in base station, when UE carry out measured value that CSI-RS RRM measurement obtains meet default threshold value time, UE sends measurement report to base station.
Step 206, UE measures accordingly according to the CSI-RS function cell choosing CSI-RS information and correspondence.
In step 206, the cell index corresponding to the CSI-RS information that UE notifies according to base station, searches corresponding CSI-RS information in the CSI-RS information of all newly-increased carrier type preserved in this locality.UE measures accordingly according to CSI-RS function cell and CSI-RS information.Wherein, CSI-RS function cell is used to indicate the measurement object of described CSI-RS information, and the measurement object of CSI-RS information conventional at present comprises: RSRP measurement, CSI feedback, interferometry, auxiliary cell management.In addition, CSI-RS function cell easily extensible be applied to after other measure the specific implementation process of objects.
Describedly carry out corresponding measurement according to different measurement target and comprise:
When the measurement object indicated by described CSI-RS function cell is RSRP measurement, UE measures according to the received signal strength signal intensity of CSI-RS information to neighbor cell;
When the measurement object indicated by described CSI-RS function cell is CSI feedback, UE carries out CSI estimation according to received CSI-RS information, and by the CSI feedback that obtains to base station;
When the measurement object indicated by described CSI-RS function cell is interferometry, UE by after the transmitted power zero setting of the CSI-RS reference signal of this community, according to the interference power of the neighbor cell of received CSI-RS information measurement same position;
When the measurement object indicated by described CSI-RS function cell is auxiliary cell management, UE carries out auxiliary cell management according to measuring the RSRP/RSRQ measured value obtained to newly-increased carrier type.
Step 207, UE sends measurement report to base station.In step 207, after UE measures accordingly according to CSI-RS function cell and CSI-RS information, when measurement result meets the measurement report condition of base station configuration, trigger measurement report event, UE sends measurement report to base station, the cell index corresponding to CSI-RS information resource of the newly-increased carrier type triggering measurement report event is carried in described measurement report, and the measured value of correspondence.
Step 208, respective handling is carried out according to the measurement report of UE in base station.
In a step 208, carry cell index, corresponding CSI-RS function cell because the RRC sent to UE in base station connects in reconfiguration message and measure report condition accordingly, therefore UE only need carry the cell index corresponding to CSI-RS information resource of the newly-increased carrier type triggering measurement report event and corresponding measured value when sending measurement report.Base station the cell index corresponding to the CSI-RS information resource of the newly-increased carrier type of triggering measurement report event can find corresponding CSI-RS information, the CSI-RS function cell of correspondence and the measurement report condition of correspondence.
Described base station is carried out corresponding process according to the measurement report that UE sends and is comprised:
When the measurement object indicated by described CSI-RS function cell is RSRP measurement, base station is chosen signal quality according to the RSRP/RSRP measured value that UE reports and is met pre-conditioned adjacent cell; Describedly meet the pre-conditioned high threshold that can be specially the RSRP/RSRP measured value reported and be greater than setting, or lower than threshold ones.
When the measurement object indicated by described CSI-RS function cell is CSI feedback, the channel quality information in the CSI feedback that base station reports according to UE, configuration data transmission means; Wherein, when CSI feedback channel quality information is better, the data transfer mode of base station configuration high-speed rate; When CSI feedback channel quality information is poor, the data transfer mode of base station configuration low rate.Described base station judges that the standard of the quality of channel quality relatively can set according to the simulation result of channel measurement in actual scene.Namely base station is according to measurement result, and it is relatively good with relative mistake therefrom to select.
When the measurement object indicated by described CSI-RS function cell is interferometry, the interference power values of the adjacent cell that base station reports according to UE, that estimates this community CSI-RS information is disturbed situation; Namely the Signal to Interference plus Noise Ratio by calculating this community carries out user scheduling.
When the measurement object indicated by described CSI-RS function cell is auxiliary cell management, auxiliary cell management is carried out according to the RSRP/RSRQ measured value of the newly-increased carrier type that UE reports in base station.
In the present invention, CSI-RS information and CSI-RS function cell are binding relationships, are not one to one, and multiple CSI-RS information can be all same measurement object, i.e. corresponding a kind of CSI-RS function cell.For a CSI-RS information, there is the CSI-RS function cell that is used to indicate this CSI-RS information measurement object.
In the second embodiment of the present invention, carry out the mode of configuration in real time after adopting UE connecting system, the CSI-RS information of the newly-increased carrier type carrying out CSI-RS RRM measurement that needs being about to choose sends to UE by RRC information.Fig. 3 is the signaling process figure that the RRM in the present invention in the second embodiment measures; As shown in Figure 3,
Step 301, initially accesses.I.e. UE access network.
Step 302, sets up RRC between UE with base station and is connected.
Step 303, chooses CSI-RS information.In step 303, the CSI-RS information needing to carry out CSI-RS RRM measurement is chosen in base station according to actual deployment situation.
Step 304, base station sends RRC to UE and connects reconfiguration message, connects in reconfiguration message the measurement report condition of carrying the CSI-RS information chosen, corresponding CSI-RS function cell and correspondence at described RRC.
In step 304, the CSI-RS information needing the newly-increased carrier type carrying out CSI-RS RRM measurement that base station will be chosen, corresponding CSI-RS function cell is connected reconfiguration message with corresponding measurement report condition by RRC and sends to UE.
Step 305, the CSI-RS function cell of the CSI-RS information that UE sends according to base station and correspondence is measured accordingly.Wherein, the concrete measuring process in step 305 is identical with the step 206 in Fig. 2.
Step 306, UE sends measurement report to base station.Within step 306, after UE measures accordingly according to the CSI-RS function cell of CSI-RS information and correspondence, when measurement result meets the measurement report condition of base station configuration, trigger measurement report event, then UE sends measurement report to base station; The CSI-RS information resource of the newly-increased carrier type triggering measurement report event is carried in described measurement report, and corresponding measured value.
Step 307, base station processes accordingly according to the measurement report of UE.
In step 307, base station reports according to the measurement of UE that to carry out corresponding process identical with step 208 shown in Fig. 2.
In other embodiments of the invention, base station is by configuration CSI-RS index-mapping table, it is each CSI-RS information configuration call number in described CSI-RS index-mapping table, send corresponding CSI-RS information in the mode sending call number, reduce the occupation rate to system bandwidth resource.Wherein, table 1 is the CSI-RS information index mapping table in an embodiment of the present invention, as shown in table 1.
| Call number | Antenna port | Resource distribution | Sub-frame configuration | Energy ratio |
| 0 | ||||
| 1 | ||||
| ... |
Table 1
In table 1, each meaning of parameters of CSI-RS information is: antenna port represents CSI-RS information place antenna end slogan; Resource distribution represents the resource distribution number of CSI-RS information; Sub-frame configuration represents the sub-frame configuration number of CSI-RS information, comprising: sub-frame configuration cycle and sub-frame offset; Energy ratio represents the energy (EPRE, Energy Per Resouse Element) of each resource element of the Physical Downlink Shared Channel PDSCH when UE carries out CSI feedback and the ratio of CSI-RS EPRE, and value is at [-8,15] dB.
In the third embodiment of the present invention, base station is configured with CSI-RS index-mapping table, comprises the CSI-RS information of all newly-increased carrier types at described CSI-RS index-mapping table.The CSI-RS index-mapping table configured is informed to UE by the mode of system broadcasts by base station, then by the call number corresponding to the CSI-RS information chosen being sent to the mode of UE, by the CSI-RS message notice UE chosen.Fig. 4 is the signaling process figure that the RRM in the present invention in the 3rd embodiment measures; As shown in Figure 4,
Step 401, base station arranges CSI-RS index-mapping table.
Step 402, base station broadcasted by SIB2 described in CSI-RS index-mapping table.
Step 403, UE is resident in community, by reading SIB2, obtaining CSI-RS index-mapping table and being kept at this locality.
Step 404, the RRC set up between UE with base station is connected.
Step 405, chooses CSI-RS information.In step 405, the CSI-RS information needing to carry out CSI-RS RRM measurement is chosen in base station according to actual deployment situation.
Step 406, base station sends RRC to UE and connects reconfiguration message, connects in reconfiguration message the measurement report condition of the call number corresponding to the CSI-RS information of carrying and choosing, corresponding CSI-RS function cell and correspondence at described RRC.
In a step 406, corresponding call number is searched according to the CSI-RS information chosen in base station in CSI-RS index-mapping table, and the call number corresponding to the CSI-RS information found, corresponding CSI-RS function cell are connected reconfiguration message with the measurement report condition of correspondence by RRC and send to UE.
Step 407, the CSI-RS function cell of the CSI-RS information that UE notifies according to base station and correspondence is measured accordingly.Wherein, UE sends RRC according to base station and connects in reconfiguration message the CSI-RS information of searching correspondence in the CSI-RS index-mapping table that the call number of carrying preserves in this locality, and the concrete measuring process of step 407 is identical with the step 206 in Fig. 2.
Step 408, UE sends measurement report to base station.In a step 408, after UE measures accordingly according to the CSI-RS information of CSI-RS function cell and correspondence, when measurement result meets the measurement report condition of base station configuration, trigger measurement report event; UE sends measurement report to base station, carries the call number corresponding to CSI-RS information resource triggering the newly-increased carrier type measuring report condition in described measurement report, and corresponding measured value.
Step 409, respective handling is carried out according to the measurement report of UE in base station.Concrete processing procedure is identical with the step 208 described in Fig. 2.
In LTE system, the capacity of system information block is always limited, when the capacity of the CSI-RS information sent is excessive, take too much system resource, can affect to other signalling, in order to reduce this impact, in the fourth embodiment of the present invention, by defining described CSI-RS index-mapping table in the protocol, reduce the signaling consumption sending CSI-RS information in system information block.Be specially, first by traveling through the parameter in the CSI-RS information of all newly-increased carrier types, according to the CSI-RS index-mapping table that obtained parameter configuration one is complete, by described CSI-RS index-mapping table write standard agreement.In the present invention specifically implements, in 3GPP LTE physical layer protocol, define above-mentioned CSI-RS index-mapping table.Fig. 5 is the signaling process figure that the RRM in the present invention in the 4th embodiment measures; As shown in Figure 5,
Step 501, defines CSI-RS index-mapping table in the protocol.Wherein, in described CSI-RS index-mapping table, be each CSI-RS information configuration call number.
Step 502, UE is resident in community.
Step 503, sets up RRC between UE with base station and is connected.
Step 504, chooses CSI-RS information.In step 405, the CSI-RS information needing to carry out CSI-RS RRM measurement is chosen in base station according to actual deployment situation.
Step 505, base station sends RRC to UE and connects reconfiguration message, described RRC connect in reconfiguration message carry the CSI-RS information chosen corresponding call number, corresponding CSI-RS function cell and correspondence report configuration condition.
In step 505, corresponding call number is searched in the CSI-RS index-mapping table that base station configures according to the CSI-RS information chosen in standard agreement.Call number corresponding to selected CSI-RS information, corresponding CSI-RS function cell are connected reconfiguration message with measurement report condition by RRC and send to UE by base station.
Step 506, UE measures accordingly according to the CSI-RS function cell of the CSI-RS information chosen and correspondence.Wherein, corresponding CSI-RS information is searched in the CSI-RS index-mapping table that UE configures according to the call number that base station sends in standard agreement.
Step 507, UE sends measurement report to base station.In step 507, after UE measures accordingly according to the CSI-RS information of CSI-RS function cell and correspondence, when measurement result meets the measurement report condition of base station configuration, trigger measurement report event, UE sends measurement report to base station, the call number corresponding to CSI-RS information resource triggering the newly-increased carrier type measuring report condition is carried in described measurement report, and corresponding measured value.
Step 508, respective handling is carried out according to the measurement report of UE in base station.Concrete processing procedure is identical with the step 208 described in Fig. 2.
In a particular embodiment of the present invention, described CSI-RS function cell comprises the bit of more than 2, by the different measurement object of the different conditions value mark CSI-RS information of bit.Such as, configuration CSI-RS function cell is 2 bits, and when the value of setting bit is 00, the measurement object of the CSI-RS information that it identifies is that RSRP measures; When the value of setting bit is 01, the measurement object of the CSI-RS information that it identifies is CSI feedback; When the value of setting bit is 10, the measurement object of the CSI-RS information that it identifies is interferometry; When the value of setting bit is 11, the measurement object of the CSI-RS information that it identifies is auxiliary cell management.
In the preferred embodiment, UE carries out measuring accordingly being specially according to the CSI-RS function cell of CSI-RS information and correspondence:
When the measurement object indicated by described CSI-RS function cell is RSRP measurement, UE measures according to the received signal quality of CSI-RS information to current service cell and adjacent cell; When finding that the signal quality of adjacent cell meets pre-conditioned, UE passes through cell reselection operation, from current service cell gravity treatment to the adjacent cell of better quality; Wherein, through measuring the RSRP measured value of correspondence or the RSRQ measured value of correspondence that obtain.
When the measurement object indicated by described CSI-RS function cell is CSI feedback, UE estimates CSI channel quality according to received CSI-RS information, and the CSI feedback obtained is transferred to base station, and base station can use CSI for data selection precoder and modulation with encoding scheme (MCS) conversely.
When the measurement object indicated by described CSI-RS function cell is interferometry, after the transmitted power zero setting of the CSI-RS information of this community, according to the interference power that the adjacent cell of received CSI-RS information measurement same position is brought; By the interference power in the transmitted power of known CSI-RS information and correspondence position, calculate signal to noise ratio snr.According to SNR value, scheduling UE sends data.
When the measurement object indicated by described CSI-RS function cell is auxiliary cell management, UE carries out RSRP/RSRQ measurement according to received CSI-RS information; Auxiliary cell management is carried out according to described RSRP/RSRQ measured value;
Wherein, described auxiliary community is the carrier cell in carrier aggregation scene beyond main plot (PCell, Primary Cell).To the management of newly-increased carrier type community in multi-carrier aggregation scene, such as add or delete, being called auxiliary cell management; Base station by judging the relation between the RSRP/RSRQ measured value that RSRP measurements obtains and default high threshold or threshold ones, thus determines UE polymerization or goes to be polymerized the community increasing carrier type accordingly newly.
Such as, if when RSRP/RSRQ measured value is higher than the high threshold preset, base station can judge that the signal quality of this measurement community is good, notice UE can be polymerized this measurement community; If when RSRP/RSRQ measured value is lower than the threshold ones preset, base station can judge that the signal quality of this measurement community is bad, notice UE can go to be polymerized this measurement community, and no longer proceeds to measure monitoring to this measurement community; If RSRP/RSRQ measured value is between threshold ones and high threshold, base station can this measurement community as assisted cell, base station by continuation to this community carry out measurement monitoring, choose according to system requirements and whether be polymerized or go to be polymerized this measurement community.That is, different operations is taked according to the RSRP/RSRQ measured value obtained in observation process.
In an embodiment of the present invention, described allocating and measuring report condition is specially: base station carries out measuring the threshold value reported according to CSI-RS function cell configuration UE, when UE carry out measured value that CSI-RS RRM measurement obtains meet default threshold value time, then UE sends measurement and reports to base station; Or base station configuration UE carries out measuring the cycle reported, when UE carries out CSI-RS RRM measurement, send measurement every Preset Time to base station and report.Specifically choose that mode to judge according to actual conditions.
Such as, when carrying out RSRP measurement, described default threshold value comprises high threshold and threshold ones, when measuring the RSRP/RSRQ measured value that obtains higher than high threshold or lower than threshold ones, all triggering measurement is reported.
Base station is carried out corresponding process according to the measurement report that UE sends and is also comprised: base station needs judge whether that the newly-increased carrier type to triggering reported event carries out RSRP/RSRQ measurement, if the RSRP/RSRQ measured value that UE sends is lower than threshold ones, illustrate this adjacent cell corresponding to RSRP/RSRQ measured value be UE away from community, no longer can keep monitoring to this adjacent cell, or go to be polymerized this adjacent cell; If the RSRP/RSRQ measured value that UE sends is higher than high threshold, illustrates that this neighbor cell corresponding to RSRP/RSRQ measured value is for UE provides service good community, this adjacent cell can be switched to notice UE, or be polymerized this adjacent cell; If the RSRP/RSRQ measured value that UE sends is between threshold ones and high threshold, then monitoring is kept to this adjacent cell, carry out according to the actual requirements being polymerized/going converging operation, realize the management of auxiliary community; In like manner, the RSRP/RSRQ measured value sent by UE judges whether to upgrade polymerisable carrier cell.And described judged result is sent to UE by RRC information, UE processes accordingly again.
In sum, the invention provides the collocation method that a kind of RRM measures, the method is newly-increased carrier type configurating channel state instruction reference signal CSI-RS information by base station; Base station selection CSI-RS information, is configured for the CSI-RS function cell of the measurement object of the CSI-RS information selected by instruction, allocating and measuring report condition; Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE; The CSI-RS information of the CSI-RS function cell that UE notifies according to base station and correspondence is measured accordingly; When satisfied measurement report condition, UE sends corresponding measurement report to base station, and the mode that corresponding process is carried out according to the measurement report that UE sends in base station carries out RRM measurement.CSI-RS index-mapping table is set up in base station, by this index-mapping table of system information broadcast.Then configure call number corresponding to CSI-RS information to UE by RRC information, save the signaling consumption of RRC information.In addition, adopt the mode defining CSI-RS index-mapping table in standard agreement, the signaling consumption of RRC information and the memory space of UE can be saved.Measured by the RRM adopting CSI-RS function cell notice U E to carry out different object, by different modes by measure needed for CSI-RS message notice to UE, solve a difficult problem of carrying out R R M measurement under the scene introducing newly-increased carrier type, compensate for the vacancy of prior art.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (6)
1. a collocation method for RRM RRM measurement, the method is applied to the scene introducing newly-increased carrier type, and it is characterized in that, the method comprises:
Base station is newly-increased carrier type configurating channel state instruction reference signal CSI-RS information;
Base station selection CSI-RS information, is configured for the CSI-RS function cell of the measurement object of the CSI-RS information selected by instruction, allocating and measuring report condition; Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE;
The CSI-RS information of the CSI-RS function cell that UE notifies according to base station and correspondence is measured accordingly;
When satisfied measurement report condition, UE sends corresponding measurement report to base station, and the measurement report that base station sends according to UE processes accordingly;
The measurement object of CSI-RS information comprises: Reference Signal Received Power RSRP measures, channel status instruction CSI feedback, interferometry, auxiliary cell management;
Described CSI-RS function cell comprises the bit of more than 2, by the different measurement object of the different conditions value mark CSI-RS information of bit;
Wherein, the CSI-RS information of the CSI-RS function cell that notifies according to base station of UE and correspondence is carried out corresponding measurement and is comprised:
When the measurement object indicated by described CSI-RS function cell is RSRP measurement, UE measures according to the received signal strength signal intensity of CSI-RS information to neighbor cell;
When the measurement object indicated by described CSI-RS function cell is CSI feedback, UE carries out CSI estimation according to received CSI-RS information, and by the CSI feedback that obtains to base station;
When the measurement object indicated by described CSI-RS function cell is interferometry, UE by after the transmitted power zero setting of the CSI-RS reference signal of this community, according to the interference power of the neighbor cell of received CSI-RS information measurement same position;
When the measurement object indicated by described CSI-RS function cell is auxiliary cell management, UE carries out auxiliary cell management according to measuring the RSRP/ Reference Signal Received Quality RSRQ measured value obtained to newly-increased carrier type;
Wherein, described allocating and measuring report condition comprises:
Base station carries out measuring the threshold value reported according to CSI-RS function cell configuration UE,
When UE carry out measured value that CSI-RS RRM measurement obtains meet default threshold value time, then UE sends measurement and reports to base station;
Or,
Base station configuration UE carries out measuring the cycle reported, and when UE carries out CSI-RS RRM measurement, sends measurement report every Preset Time to base station;
Described base station is carried out corresponding process according to the measurement report that UE sends and is comprised:
When the measurement object indicated by described CSI-RS function cell is RSRP measurement, base station is chosen signal quality according to the RSRP/RSRP measured value that UE reports and is met pre-conditioned neighbor cell;
When the measurement object indicated by described CSI-RS function cell is CSI feedback, the channel quality information in the CSI feedback that base station reports according to UE, configuration data transmission means;
When the measurement object indicated by described CSI-RS function cell is interferometry, the interference power values of the adjacent cell that base station reports according to UE, that estimates this community CSI-RS is disturbed situation;
When the measurement object indicated by described CSI-RS function cell is auxiliary cell management, auxiliary cell management is carried out according to the RSRP/RSRQ measured value of the newly-increased carrier type that UE reports in base station.
2. method according to claim 1, is characterized in that,
Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are informed to UE comprise:
The corresponding cell index PCI of CSI-RS information of a newly-increased carrier type;
The CSI-RS information of all newly-increased carrier types is broadcasted by system information block SIB2 in base station; UE, by the resident reading in community SIB2, obtains the CSI-RS information of all newly-increased carrier types and is kept at this locality;
Cell index corresponding to selected CSI-RS information, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE by base station;
The PCI that UE sends according to base station, searches corresponding CSI-RS information in this locality.
3. method according to claim 1, is characterized in that, described by selected CSI-RS information, the corresponding CSI-RS function cell configured with measure report condition and inform to UE and comprise:
Selected CSI-RS information, the corresponding CSI-RS function cell configured and measurement report condition are sent to UE by radio resource control RRC connection reconfiguration message.
4. method according to claim 1, is characterized in that, described by selected CSI-RS information, the corresponding CSI-RS function cell configured with measure report condition and inform to UE and comprise:
Base station arranges CSI-RS index-mapping table, is each CSI-RS information configuration call number in this CSI-RS index-mapping table;
Described CSI-RS index-mapping table is broadcasted by SIB2 in base station, and UE, by the resident reading in community SIB2, obtains described CSI-RS index-mapping table and is kept at this locality;
Corresponding call number is searched according to selected CSI-RS information in base station in described CSI-RS index-mapping table, and found call number, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE;
The call number that UE sends according to base station, finds corresponding CSI-RS information in the CSI-RS index-mapping table that this locality is preserved.
5. method according to claim 1, is characterized in that, described by selected CSI-RS information, the corresponding CSI-RS function cell configured with measure report condition and inform to UE and comprise:
Configure CSI-RS index-mapping table in the protocol, be each CSI-RS information configuration call number in described CSI-RS index-mapping table;
Corresponding call number is searched according to selected CSI-RS information in base station in described CSI-RS index-mapping table, and found call number, the corresponding CSI-RS function cell that configures are connected reconfiguration message with measurement report condition by RRC and send to UE;
The call number that UE sends according to base station, finds corresponding CSI-RS information in the CSI-RS index-mapping table preserved in the protocol.
6. method according to claim 1, is characterized in that, described base station is carried out corresponding process according to the measurement report that UE sends and also comprised:
The measurement report that base station sends according to UE, judges whether that the newly-increased carrier type to triggering reported event carries out RSRP/RSRQ measurement, and whether upgrades polymerisable carrier cell; Described judged result is sent to UE by RRC information.
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