CN103945447A - Method for measuring downlink channel characteristic parameters, and user equipment - Google Patents
Method for measuring downlink channel characteristic parameters, and user equipment Download PDFInfo
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Abstract
本发明提出了一种利用虚共址的多重参考信号资源进行下行信道特性参数测量的方法，包括以下步骤：用户设备接收信令，从中获取测量下行信道特性参数所对应的满足虚共址关系的多重参考信号资源的组合及其相应的配置信息；用户设备在所述满足虚共址关系的多重参考信号资源上进行下行信道特性参数的测量，并根据测量配置上报相应的下行信道特性参数。本发明还提出了一种用户设备。本发明通过合理地配置多重参考信号资源满足虚共址关系，能够使UE在保持合理的复杂度和功耗的前提下，有效地提高UE对下行信道特性参数的测量精度。
The present invention proposes a method for measuring downlink channel characteristic parameters using virtual co-located multiple reference signal resources, including the following steps: the user equipment receives signaling, and obtains the corresponding virtual co-location relationship corresponding to the measured downlink channel characteristic parameters Combination of multiple reference signal resources and corresponding configuration information; user equipment measures downlink channel characteristic parameters on the multiple reference signal resources satisfying the virtual co-location relationship, and reports corresponding downlink channel characteristic parameters according to the measurement configuration. The invention also proposes a user equipment. The present invention satisfies the virtual co-location relationship by rationally configuring multiple reference signal resources, enabling the UE to effectively improve the UE's measurement accuracy of downlink channel characteristic parameters under the premise of maintaining reasonable complexity and power consumption.
Description
Technical field
The application relates to wireless communication technology field, and particularly, the application relates to the method and the subscriber equipment that carry out the measurement of down channel characterisitic parameter.
Background technology
For LTE Rel8/9/10 system, community public reference signal, CSI-RS, user's DRS (Dedicated Reference Signal) resource and downstream data channel are all sent from same transfer point, and these signals are common locations.Due to common location, these signals have the identical characteristic of channel, and subscriber equipment (UE) carries out the estimation of the characteristic of channel based on community public reference signal (CRS) conventionally, as the estimation of doppler spread, time delay expansion, Frequency Synchronization and time synchronized.In addition, CRS is also used to the measurement of the measuring amount of supporting RRM, as the measurement for supporting Reference Signal Received Power, the reference symbol quality of reception etc.
Multi-point cooperative operation (CoMP) is a key property of LTE system, and multi-point cooperative operation can improve the peak rate of system and the user's of cell edge throughput effectively.
In CoMP, because the transfer point (TP) of transmitting downlink data is dynamic change, different reference signal resource, down control channel and downstream data channel may be from different transfer points.In this case, downlink reference signal and downstream data channel are no longer common locations, cause original measurement of carrying out the characteristic of channel based on community public reference signal cannot work.
To the transmission of Physical Downlink Shared Channel (PDSCH), in current standardization, define multiple void parameter sets of location (QCL) altogether by system signaling, the void location hypothesis altogether that different set is corresponding different.Each void comprises channel status instruction reference signal (CSI-RS) resource in the set of location altogether, for the measurement of characteristic of channel parameter.Meanwhile, system is indicated the location set altogether of void corresponding to current downstream data channel by descending control signaling.The single CSI-RS resource that UE is total in the set of location based on each void is carried out the measurement (comprising: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay etc.) of characteristic of channel parameter.
Utilize reference signal resource to carry out the measurement of the characteristic of channel, its certainty of measurement depends on the distribution at temporal frequency domain of resource element number available in a Resource Block and reference signal resource sampling point to a great extent.As shown in Figure 1, CRS has 8 resource sampling points in a time/frequency source block, and a CSI-RS only has 2 resource elements (in the situation that of 2 antenna ports) in a time/frequency source block, its number of samples is little, cause the characteristic of channel parameters precision of its measurement poor, for some characteristic of channel parameter, its scope that can estimate and measure is very little, cannot meet the needs of system.
In current standardization, propose to utilize user's DRS (Dedicated Reference Signal) (DMRS) of PDSCH to assist estimation characteristic of channel parameter, but the number of samples of user's DRS (Dedicated Reference Signal) is limited to the number of resource blocks that user's DRS (Dedicated Reference Signal) of current descending deployment takies.In the situation that downlink user number of resources is less, estimated accuracy is poor, cannot effectively follow the tracks of the characteristic of channel.Simultaneously, because user's DRS (Dedicated Reference Signal) sends together with downlink data, it is in different subframes from different transfer points, and therefore subscriber equipment cannot be predicted characteristic of channel parameter in advance, need to estimate in each down data subframes, increase the complexity realizing.
Therefore, need to propose a kind of effectively technical scheme, solve based on individual channel reference resources in void common location set and carry out characteristic of channel measurement, the technical problem that its precision is inadequate, and for some characteristic of channel parameter, its scope that can estimate is very little, cannot meet the technical problem of the demand of system.
Summary of the invention
The application's object is intended at least one of solve the problems of the technologies described above, and makes UE in maintaining lower power consumption and complexity, can measure exactly multiple down channel characterisitic parameter.
The embodiment of the present application has proposed a kind of method of carrying out the measurement of down channel characterisitic parameter on the one hand, comprises the following steps:
Subscriber equipment receives signaling, obtains and meet empty combination and the configuration information thereof of the multiple reference signal resource of location relation altogether from described signaling;
The multiple reference signal resource that subscriber equipment is total to location relation in described satisfied void carries out the measurement of down channel characterisitic parameter;
Subscriber equipment is according to measuring configuration, the down channel characterisitic parameter that reporting measurement obtains.
The embodiment of the present application has also proposed a kind of subscriber equipment on the other hand, comprises receiver module, measurement module and sending module, wherein:
Described receiver module, the signaling sending for receiving base station is obtained and is met empty combination and the configuration information thereof of the multiple reference signal resource of location relation altogether from described signaling;
Described measurement module, carries out the measurement of down channel characterisitic parameter for the multiple reference signal resource that is total to location relation in described satisfied void;
Described sending module, for reporting base station according to measuring configuration by the down channel characterisitic parameter measuring.
The such scheme that the application proposes, provide a kind of each void altogether in the set of location by choose reasonable and the multiple reference signal resource of configuration, make the UE can be based on the void scheme that the multiple reference signal resource of location carries out estimation and the measurement of multiple characteristic of channel parameter altogether.Be total to the multiple reference signal resource in the set of location in void, it can be the multiple CSI-RS resource of configuration, can be the demodulated reference signal resource (DMRS) that multiple enhancing control channel collection (ePDCCH) is corresponding, can be also the combination of the demodulated reference signal resource (DMRS) of single or multiple CSI-RS resource and single or multiple ePDCCH collection.This scheme by each void altogether the multiple reference signal resource of location set configuration increased reference signal resource element for measuring the characteristic of channel parameter granularity at time-frequency domain, combine by the multiple reference signal resource of reasonable disposition simultaneously, effectively raise the precision that UE measures characteristic of channel parameter, also improved the estimation range of the characteristic of channel parameter that UE can estimate simultaneously.In addition, the such scheme that the application proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
Brief description of the drawings
Fig. 1 is community public reference signal (port0) and single CSI-RS(port15 under existing single antenna port) resource schematic diagram;
Fig. 2 is the mapping pattern schematic diagram of CSI-RS resource under existing 2 antenna ports (port15/port16);
Fig. 3 is that the embodiment of the present application is based on the void method flow diagram of the multiple reference signal resource measurement characteristic of channel parameter of location altogether;
Fig. 4 is that the application is by selecting different CSI-RS resource distributions to combine the empty schematic diagram of location altogether of multiple reference signal resource;
Fig. 5 is that the application is by selecting different CSI-RS sub-frame configuration to combine the empty schematic diagram of location altogether of multiple CSI-RS resource;
Fig. 6 is that the application is by selecting the demodulation reference channel resource of single CSI-RS resource and ePDCCH collection to combine the empty schematic diagram of location altogether of the multiple reference signal resource of configuration;
Fig. 7 is that the application is by selecting the demodulated reference signal resource of multiple CSI-RS resources and ePDCCH collection to combine the empty schematic diagram of location altogether of the multiple reference signal resource of configuration;
Fig. 8 is the structural representation of the embodiment of the present application user equipment (UE).
Embodiment
For making the application's object, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the application is described in further detail.
The application proposes one and in the set of location, configures multiple reference signal resource altogether in void, thereby improves the method for down channel characterisitic parameter certainty of measurement.
In the application, the combination of " multiple " reference signal resource comprises the implication of two aspects: on the one hand, can be that multiple reference signal resources of same type combine; On the other hand, can be that one or more reference signal resources of number of different types combine.
Particularly, the application's main thought is: first, base station configures multiple reference signal resources and issues at same TP, thereby make these reference signal resources meet empty location relation altogether, form the location set altogether of a void, then, same void is total to the multiple reference signal resources in the set of location by base station combination and configuration information thereof are handed down to UE by high-level signaling, UE is known and met empty combination and the configuration information thereof of the multiple reference signal resource of location relation altogether, and measure down channel characterisitic parameter on described multiple reference signal resource, owing to having increased sample number, thereby improve certainty of measurement, and increase the scope of the down channel characterisitic parameter that UE can estimate.
The satisfied void of the configuration altogether multiple reference signal resource of location relation can be multiple CSI-RS resource, also can be demodulated reference signal (DMRS) resource of multiple ePDCCH collection, can also be the combination of the DMRS resource of multiple or single CSI-RS resource and multiple or single ePDCCH collection.Fig. 2 provided existing under 2 ports the CSI-RS resource mapping pattern schematic diagram in subframe.Can be found out by numeral in figure: have 20 kinds of different CSI-RS resource distributions, each CSI-RS resource only has 2 resource elements in a Resource Block.
In order to realize the application's object, the embodiment of the present application has proposed a kind of method that adopts the multiple reference signal resource of empty location altogether to measure down channel characterisitic parameter, comprises the following steps: subscriber equipment receives configuration and meets the empty signaling of the multiple reference signal resource of location relation altogether; Subscriber equipment obtains and measures the corresponding void of down channel characterisitic parameter combination and the corresponding configuration information thereof of the reference signal resource of location altogether according to described signaling; The multiple reference signal resource that subscriber equipment adopts described satisfied void to be total to location relation carries out the measurement of down channel characterisitic parameter; Subscriber equipment receives according to the down channel characterisitic parameter of measuring Downlink Control Information and the downlink data that base station sends, and the down channel characterisitic parameter obtaining according to the configuration reporting measurement of base station.
As shown in Figure 3, utilize the multiple reference signal resource in empty location altogether for the embodiment of the present application and measure the method flow diagram of down channel characterisitic parameter, comprise the following steps:
S110: subscriber equipment receives signaling, the corresponding satisfied void of characteristic of channel parameter multiple reference signal resource combination and the corresponding configuration information thereof of location relation altogether measured in described signaling instruction.Below also " meeting the multiple reference signal resource combination of empty location relation altogether " can be called to " the multiple reference signal resource in the empty set of location altogether ".
In this step, base station can send this signaling to subscriber equipment by radio-resource-configuration message or control information.
In this step, the described satisfied void altogether compound mode of the multiple reference signal resource combination of location relation can adopt following any one or various ways to adopt simultaneously:
Compound mode one, the mode that adopts frequency domain to combine, configures multiple channel reference resource and meets empty location (QCL) relation altogether, selects multiple CSI-RS resources to combine by CSI-RS resource distribution (CSI-RS configuration).For example: in Fig. 4 example shown, selection be that reference signal resource is configured to 0 and 2 CSI-RS resource and combines.
Compound mode two, the mode that adopts time domain to combine, configures multiple CSI-RS resource and meets QCL relation, selects the reference signal resource of different subframes to combine by CSI-RS sub-frame configuration (CSI-RS subframe configuration).For example: in Fig. 5 example shown, selection be that reference signal sub-frame configuration in different subframes is that 15,16,17 reference signal resource combines.
Compound mode three, the DMRS resource of configuration CSI-RS resource and ePDCCH collection meets QCL relation.The method that strengthens QCL certainty of measurement than the DMRS with dynamic dispatching PDSCH, under this compound mode, the configuration of ePDCCH collection (the right index of PRB for example taking) configures by high-level signaling is semi-static.UE can be informed on some time-frequency positions of radio frames certain existence can be for strengthening the DMRS channel of QCL characteristic of channel certainty of measurement, thereby ensure the robustness that QCL measures.Here the ePDCCH collection that is used for strengthening QCL characteristic of channel certainty of measurement, is generally distributed ePDCCH collection.The DMRS of distributed ePDCCH collection is that multiple UE share, its transmitting power each PRB on normally constant, and to arrange according to the poorest UE of channel quality, this is all conducive to improve QCL certainty of measurement.
Here the distributed ePDCCH collection of introducing, the just precision in order to utilize its DMRS enhancing QCL characteristic of channel to measure, and do not require that UE must utilize this ePDCCH collection to detect the ePDCCH of scheduling up-downgoing transmission simultaneously.Existing standard is supported at most 4 kinds of QCL hypothesis to PDSCH, but UE at most only detects two ePDCCH collection, therefore, according to the application's compound mode three, necessarily there is so distributed ePDCCH collection, it can be used for strengthening the precision that UE measures the QCL characteristic of channel, but UE is not configured on this distributed ePDCCH collection and detects ePDCCH.In fact, 4 the distributed ePDCCH collection of precision measured for strengthening the QCL characteristic of channel that configure, can be different from UE and detect the ePDCCH collection of ePDCCH completely.In fact a UE is existed at most to 6 ePDCCH collection, on 4 distributed ePDCCH collection, UE only need to measure its DMRS and then obtain the QCL characteristic of channel therein, and two other ePDCCH collection need to both detect DMRS and also detect alternative ePDCCH channel.To a QCL parameter set, the distributed ePDCCH collection that strengthens QCL characteristic of channel certainty of measurement can be exactly also the ePDCCH collection of a detection ePDCCH of UE configuration.Like this, the ePDCCH collection number of the actual detection of UE correspondingly reduces.
For two examples, compound mode three is described below.
As shown in Figure 6, the DMRS resource that makes 1 CSI-RS resource (resource distribution is 0) and distributed ePDCCH set pair answer meets QCL relation, further this distributed ePDCCH collection of hypothesis comprises 4 PRB couple, and essence is to utilize 4 PRB of distributed ePDCCH collection upper DMRS port one 07 and 109 to be strengthened to the QCL characteristic of channel precision of utilizing CSI-RS resource (resource distribution is 0) to measure.
As shown in Figure 7, make 2 CSI-RS resources (resource distribution is 0 and 2) and the DMRS resource of distributed ePDCCH collection meet QCL relation, further this distributed ePDCCH collection of hypothesis comprises 4 PRB couple, and essence is to utilize 4 PRB of distributed ePDCCH collection upper DMRS port one 07 and 109 to be strengthened to the QCL characteristic of channel precision of utilizing CSI-RS resource (resource distribution is 0 and 2) to measure.
In the application's step S110, in the time selecting to meet the multiple CSI-RS combination of resources of empty location relation altogether, selection mode can be following any one:
Selection mode one selects arbitrarily CSI-RS resource to combine from optional CSI-RS resource.
Selection mode two, according to the correlation properties of measuring the requirement of characteristic of channel parameter and the temporal frequency domain of channel, selects correlation properties strong and be that CSI-RS resource on different time domain symbol combines.
As shown in Figure 4, if consider temporal frequency domain correlation, in identical subframe, select the resource that time domain difference and frequency are adjacent to combine, for example, reference signal resource is configured to 0 and 2 CSI-RS resource and combines.
As shown in Figure 5, if consider temporal frequency domain correlation, between different subframes, pass through to select CSI-RS sub-frame configuration, selection has same period and in the adjacent CSI-RS resource of time domain, is 15,16 as selected reference signal sub-frame configuration, 17 reference signal resource combines, reference signal resource in combination is in adjacent sub-frame 0,1, in 2 like this.
In the application's step S110, subscriber equipment can suppose that the void obtaining is total to the multiple reference signal resource in the set of location, is consistent to following one or more characteristic of channel parameters:
Time delay expansion;
Average gain;
Frequency shift (FS);
Doppler spread;
Average delay.
Should comprise following one or more information in signaling described in the application's step S110:
1) number of CSI-RS in combination, that is: the size of multiple CSI-RS combination of resources.
2) resource distribution of CSI-RS in combination.This signaling can provide concrete configuration combination, and as used in signaling, { 0,2} representative selects the CSI-RS resource that resource distribution is 0,2 to combine; Also all feasible resource distributions can be combined from saving signaling consumption angle, it is numbered, and the corresponding numbering of instruction number.For the situation of 1 antenna port or 2 antenna ports (referred to as 1/2 antenna port), be 2 o'clock in combined size, consider that all combinations of traversal will have
plant combination, can be to this
the individual line number that is combined into, or select subset to be wherein numbered according to the demand of channel relevancy and measurement.Be illustrated below by table 1.
Table 1 has been listed under 1/2 antenna port, the list of part combination of resources subset in the situation that combined size is 2.
Table 1
According to table 1, suppose that it is 0 that subscriber equipment receives combination number, can know that the resource distribution in current combination is combined as { 0,1}.
3) sub-frame configuration of channel reference resource in combination.This signaling can provide concrete configuration combination as { 15,16,17} representative selects subframe to be configured to { 15, the resource of 16,17} combines, or provides the initial sub-frame configuration of resource in combined size and combination, as: combined size is 3, initial sub-frame configuration is 15 can obtain sub-frame configuration set for { 15,16,17}.
4) the empty indication information of the ePDCCH collection of location altogether, comprises PRB that ePDCCH collection the comprises initialization value to index, DMRS sequence etc.
S120: subscriber equipment obtains and measures the corresponding satisfied void of down channel characterisitic parameter combination and the corresponding configuration information thereof of the reference signal resource of location relation altogether according to the signaling receiving.
In this step, the mode that subscriber equipment obtains described combination and corresponding configuration information thereof depends on the mode that in step S110, signaling is carried corresponding information.Particularly, can obtain by following several modes combination and the corresponding configuration information thereof of multiple reference signal resource.
Acquisition pattern one: normalized definition form, signaling provides combined size and pre-defined combination of resources numbering, and subscriber equipment is searched the specific configuration information of the multiple reference signal resource in predefined form acquisition combination according to this signaling.For example: according to table 1, it is 2 that subscriber equipment receives combination number, combined size is 2 simultaneously, can know that the resource distribution in current combination is combined as { 0,2}.
Acquisition pattern two: provide concrete combination by signaling, subscriber equipment receives signaling and just obtains the configuration of combining interior multiple reference signal resource.
S130: subscriber equipment is according to utilizing the empty multiple reference signal resource of location altogether to carry out the measurement of down channel characterisitic parameter.
In this step, subscriber equipment can utilize the satisfied empty multiple reference signal resource of location relation altogether to measure down channel characterisitic parameter.The characteristic of channel parameter that can measure comprise following one or more:
Time delay expansion;
Average gain;
Frequency shift (FS);
Doppler spread;
Average delay;
Channel quality information;
Reference Signal Received Power;
Reference Signal Received Quality.
S140: receive according to the down channel characterisitic parameter measuring Downlink Control Information and the downlink data that base station sends, and according to the configuration of base station, the down channel characterisitic parameter that reporting measurement obtains.
Corresponding to said method, the embodiment of the present application has also proposed a kind of subscriber equipment as shown in Figure 8, and this subscriber equipment comprises receiver module 110, measurement module 120 and sending module 130, wherein:
Receiver module 110, the signaling sending for receiving base station is obtained the combination and the corresponding configuration information thereof that meet the empty multiple reference signal resource of location relation altogether from described signaling;
Measurement module 120, carries out the measurement of down channel characterisitic parameter for the multiple reference signal resource that is total to location relation in described satisfied void;
Sending module 130, for reporting base station according to measuring configuration by the down channel characterisitic parameter measuring.
Preferably, the multiple reference signal resource of the common location of described satisfied void relation refers to: described multiple reference signal resource is consistent to one or more following characteristic of channel parameters: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay;
Described measurement module, for measuring one or more of following down channel characterisitic parameter: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay, channel quality information, Reference Signal Received Power, Reference Signal Received Quality.
Wherein, the satisfied void that receiver module obtains the altogether compound mode of the multiple reference signal resource combination of location relation can combine according to foregoing three kinds of compound modes, and, in the time selecting multiple CSI-RS resource to combine, can select according to foregoing two kinds of selection modes, not repeat them here.
Said method or equipment that the application proposes, provide a kind of each void altogether in the set of location by choose reasonable and the multiple reference signal resource of configuration, make the UE can be based on the void scheme that the multiple reference signal resource of location carries out estimation and the measurement of multiple characteristic of channel parameter altogether.Simultaneously by the multiple reference signal resource of configuration, increase the scope of the characteristic of channel parameter that subscriber equipment can process, hour also can ensure enough certainties of measurement at Measurement bandwidth, avoid UE measure and carry out for a long time the measurement of down channel characterisitic parameter at excessive Measurement bandwidth, effective guarantee the complexity of system and the power consumption of subscriber equipment.In addition, the such scheme that the application proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
For the ease of understanding the application, be described further referring to the concrete application scenarios of accompanying drawing examples.
Application scenarios one: the empty multiple reference signal resource of location set configuration is altogether: multiple CSI-RS resource, and multiple CSI-RS resource distributions under identical sub-frame configuration.
As Fig. 2 and Fig. 4, this application scene description base station configuration satisfied void altogether the multiple reference signal resource combination of location relation be by selecting CSI-RS resources different under identical subframe to realize.
The 1st step: the configuration that the void of current configuration is total to the multiple reference signal resource combination in the set of location by base station is informed UE by system information.Concrete signaling thes contents are as follows:
CSI-RS number of resources in combination: 2;
CSI-RS resource distribution in combination: can provide concrete configuration 0 and 2 or provide the numbering of table of combination, as the numbering 2 in table 1.
The 2nd step: UE receives the configuration information about multiple channel reference channel resource combination, and the resource distribution of knowing current multiple CSI-RS according to system information is { 0,2}.
The 3rd step: UE is according to the resource distribution of the multiple reference signal obtaining, the locational resource element of respective resources is operated, measure down channel characterisitic parameter, specifically comprise: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay, channel quality information, CSI-RS received power, the CSI-RS quality of reception.
The 4th step: UE reports the measurement result of down channel characterisitic parameter in Measuring Time, comprising: channel quality information, CSI-RS received power, the CSI-RS quality of reception.
Application scenarios two: the multiple reference signal resource of the common location of the satisfied void relation of configuration is combined as the demodulated reference signal resource of single CSI-RS resource and ePDCCH collection, as shown in Figure 7.
This application scene description base station configure polytype reference signal resource and combine empty location altogether, single CSI-RS resource and ePDCCH collection are combined.
The 1st step: the information exchange of the multiple reference signal resource combination in the void common location set of the current configuration in base station is crossed system information and informed UE.Concrete signaling thes contents are as follows:
CSI-RS configuration information in the empty set of location altogether:
The resource distribution of CSI-RS combination: 0;
The empty ePDCCH collection indication information of location altogether, comprises that PRB that ePDCCH collection comprises is to index, the initialization value of DMRS sequence etc.
The 2nd step: UE receives about the void configuration information of the multiple reference channel combination of resources of location altogether, the resource distribution of knowing the CSI-RS of the common location of current void according to system information is 0, obtains the current void configuration information of the demodulated reference signal resource of the ePDCCH collection of location altogether according to the instruction of the ePDCCH collection of the common location of void simultaneously.
The 3rd step: UE is according to the resource distribution of the multiple reference signal obtaining, the locational resource element of respective resources is operated, measure down channel characterisitic parameter, specifically comprise: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay, channel quality information, CSI-RS received power, the CSI-RS quality of reception.
The 4th step: UE configures according to measuring the measurement result that reports down channel characterisitic parameter in Measuring Time.
Application scenarios three: the multiple reference signal resource that meets the empty set of location is altogether combined as the multiple reference signal resource in different subframes, as shown in Figure 6.This application scene description base station selectedly combine multiple reference signal resource in adjacent sub-frame.Corresponding signaling is combined as: the size of instruction combination is and combines corresponding resource sub-frame configuration set, informs the configuration information of the current multiple reference signal resource combination of user.
The 1st step: the void of the current configuration in the base station information exchange that the multiple reference signal resource of location combines is altogether crossed system information and informed UE.Concrete signaling thes contents are as follows:
Antenna port number: 2;
CSI-RS number of resources in combination: 3;
The CSI-RS resource distribution of combination: 0;
The CSI-RS resource sub-frame configuration set of combination: { 15,16,17}.
The 2nd step: UE receives about the void configuration information of location multiple reference signal resource combination in gathering altogether, knows that according to system information the resource distribution of current multiple CSI-RS is 0, and corresponding subframe is that { 0,1,2}, transmission cycle is 20ms.
The 3rd step: UE is according to the resource distribution of the multiple reference signal obtaining, the locational resource element of respective resources is operated, measure down channel characterisitic parameter, specifically comprise: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay, channel quality information, CSI-RS received power, the CSI-RS quality of reception.
The measurement result of the 4th step: UE reporting channel characterisitic parameter in Measuring Time.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a kind of computer-readable recording medium, this program, in the time carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, the each functional unit in each embodiment of the application can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium using the form of software function module.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The foregoing is only the application's preferred embodiment, not in order to limit the application, all within the application's spirit and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of the application's protection.
Claims (10)
1. a method of carrying out the measurement of down channel characterisitic parameter, is characterized in that, comprises the following steps:
Subscriber equipment receives signaling, obtains and meet empty combination and the configuration information thereof of the multiple reference signal resource of location relation altogether from described signaling;
The multiple reference signal resource that subscriber equipment is total to location relation in described satisfied void carries out the measurement of down channel characterisitic parameter;
Subscriber equipment is according to measuring configuration, the down channel characterisitic parameter that reporting measurement obtains.
2. the method for claim 1, is characterized in that:
The described satisfied void altogether multiple reference signal resource of location relation refers to: described multiple reference signal resource is consistent to one or more following characteristic of channel parameters: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay;
Described being measured as measured one or more in following down channel characterisitic parameter: time delay is expanded, average gain, frequency shift (FS), doppler spread, average delay, channel quality information, Reference Signal Received Power, Reference Signal Received Quality.
3. the method for claim 1, is characterized in that:
The combination of described multiple reference signal resource comprises: the multiple reference signal resources to same type combine, or dissimilar one or more reference signal resources are combined;
The type of described reference signal resource comprises: demodulated reference signal (DMRS) resource that channel status instruction reference signal (CSI-RS) resource, enhancing Physical Downlink Control Channel (ePDCCH) set pair are answered.
4. method as claimed in claim 3, is characterized in that, the compound mode of described multiple reference signal resource combination comprises that following one or more modes adopt simultaneously:
By selecting different CRI-RS resource distributions, the multiple CRI-RS resources in same subframe are combined;
By selecting the sub-frame configuration of different CRI-RS resources, the CRI-RS resource of different subframes is combined;
The DMRS resource of single or multiple CRI-RS resources and single or multiple ePDCCH collection combines.
5. the method for measurement down channel characterisitic parameter as claimed in claim 4, is characterized in that, in the time that CSI-RS resource is combined, follows following principle:
In current available CSI-RS resource, select at random;
In current available CSI-RS resource, according to the correlation properties of down channel characterisitic parameter and time-frequency domain channel to be measured, selective channel correlation properties reference signal resource strong and on different time domain symbol combines.
6. the method for measurement down channel characterisitic parameter as claimed in claim 5, is characterized in that, the mode of the CSI-RS resource that selective channel correlation properties are strong comprises:
In same subframe, be chosen on different time domain symbol and CSI-RS resource that frequency domain is adjacent combines;
In different subframes, select the CSI-RS resource that sub-frame configuration is adjacent to combine.
7. method as claimed in claim 3, is characterized in that:
Described ePDCCH collection is distributed ePDCCH collection;
Described ePDCCH collection is the ePDCCH collection that configuration UE detects ePDCCH; Or described ePDCCH collection is not the ePDCCH collection that configuration UE detects ePDCCH.
8. method as claimed in claim 3, is characterized in that, described signaling comprises following one or more information:
The size of multiple CSI-RS combination of resources;
The corresponding numbering of multiple CSI-RS combination of resources;
The CSI-RS resource distribution set that multiple CSI-RS combination of resources is corresponding;
The CSI-RS sub-frame configuration set that multiple CSI-RS combination of resources is corresponding;
The empty indication information of the ePDCCH collection of location altogether.
9. a subscriber equipment, is characterized in that, comprising: receiver module, measurement module and sending module, wherein:
Described receiver module, the signaling sending for receiving base station is obtained and is met empty combination and the configuration information thereof of the multiple reference signal resource of location relation altogether from described signaling;
Described measurement module, carries out the measurement of down channel characterisitic parameter for the multiple reference signal resource that is total to location relation in described satisfied void;
Described sending module, for reporting base station according to measuring configuration by the down channel characterisitic parameter measuring.
10. subscriber equipment as claimed in claim 9, is characterized in that:
The described satisfied void altogether multiple reference signal resource of location relation refers to: described multiple reference signal resource is consistent to one or more following characteristic of channel parameters: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay;
Described measurement module, for measuring one or more of following down channel characterisitic parameter: time delay expansion, average gain, frequency shift (FS), doppler spread, average delay, channel quality information, Reference Signal Received Power, Reference Signal Received Quality.
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| WO2023178543A1 (en) * | 2022-03-23 | 2023-09-28 | Qualcomm Incorporated | Explicit and implicit precoder indication for demodulation reference signal-based channel state information reporting |
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| Publication number | Publication date |
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| CN103945447B (en) | 2019-11-08 |
| CN110602743B (en) | 2022-09-09 |
| CN110602743A (en) | 2019-12-20 |
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