CN103945447B - A kind of method and user equipment carrying out downlink channel characteristics parameter measurement - Google Patents
A kind of method and user equipment carrying out downlink channel characteristics parameter measurement Download PDFInfo
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- CN103945447B CN103945447B CN201310019984.3A CN201310019984A CN103945447B CN 103945447 B CN103945447 B CN 103945447B CN 201310019984 A CN201310019984 A CN 201310019984A CN 103945447 B CN103945447 B CN 103945447B
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Abstract
Present applicant proposes a kind of methods for carrying out downlink channel characteristics parameter measurement using empty co-located Multiple reference signal resource, the following steps are included: user equipment receives signaling, the combination for meeting the Multiple reference signal resource of empty co-located relationship corresponding to measurement downlink channel characteristics parameter and its corresponding configuration information are therefrom obtained；User equipment carries out the measurement of downlink channel characteristics parameter on the Multiple reference signal resource for meeting empty co-located relationship, and reports corresponding downlink channel characteristics parameter according to measuring configuration.The application also proposed a kind of user equipment.The application meets empty co-located relationship by reasonably configuration Multiple reference signal resource, can make UE under the premise of keeping reasonable complexity and power consumption, effectively improve UE to the measurement accuracy of downlink channel characteristics parameter.
Description
Technical field
This application involves wireless communication technology fields, specifically, this application involves carry out the survey of downlink channel characteristics parameter
The method and user equipment of amount.
Background technique
For LTE Rel8/9/10 system, cell common reference signal, CSI-RS, user's DRS (Dedicated Reference Signal) resource and
Downstream data channel is issued from the same transfer point, i.e., these signals are co-located.Due to co-located, these signals possess
The identical characteristic of channel, user equipment (UE) are typically based on the estimation that cell common reference signal (CRS) carries out the characteristic of channel, such as
The estimation of doppler spread, delay spread, Frequency Synchronization and time synchronization.In addition, CRS also be used to support wireless resource management
Measurement amount measurement, such as supporting the measurement of Reference Signal Received Power, the reference symbol quality of reception.
Multi-point cooperative operation (CoMP) is a key property of LTE system, and multi-point cooperative operation can effectively improve
The handling capacity of the user of the peak rate and cell edge of system.
In CoMP, since the transfer point (TP) of transmission downlink data is dynamic change, different reference signal resources,
Down control channel and downstream data channel may be from different transfer points.In this case, downlink reference signal is under
Row data channel be no longer it is co-located, cause it is original based on cell common reference signal carry out the characteristic of channel measurement without
Method work.
Transmission to Physical Downlink Shared Channel (PDSCH), it is current standardized in by system signaling define it is multiple it is empty altogether
The parameter sets of location (QCL), the corresponding different co-located hypothesis of void of different set.It include a channel in each co-located set of void
State instruction reference signal (CSI-RS) resource, the measurement for characteristic of channel parameter.Meanwhile system passes through descending control signaling
Indicate the corresponding co-located set of void of current downlink data channel.UE based on the single CSI-RS resource in each co-located set of void into
The measurement (including: delay spread, average gain, frequency shift (FS), doppler spread, average delay etc.) of row characteristic of channel parameter.
The measurement of the characteristic of channel is carried out using reference signal resource, measurement accuracy is heavily dependent on a resource
The distribution of available resource element number and reference signal resource sampling point in temporal frequency domain in block.As shown in Figure 1, CRS is one
There are 8 resource sampling points in a time/frequency source block, and a CSI-RS only has 2 resource elements (2 in a time/frequency source block
In the case where a antenna port), number of samples is seldom, and the characteristic of channel parameters precision for causing it to measure is poor, for certain letters
Road characterisitic parameter, the range very little that can be estimated and measure, is unable to satisfy the needs of system.
Current standardized middle user DRS (Dedicated Reference Signal) (DMRS) of the proposition using PDSCH assists the estimation characteristic of channel to join
Number, but the number of samples of user's DRS (Dedicated Reference Signal) is limited to the resource that user's DRS (Dedicated Reference Signal) of current downlink deployment occupies
Block number.In the lesser situation of downlink user number of resources, estimated accuracy is poor, can not effectively track the characteristic of channel.Simultaneously as
User's DRS (Dedicated Reference Signal) is sent together with downlink data, in different subframes from different transfer points, therefore user
Equipment can not predict characteristic of channel parameter in advance, need to be estimated in each down data subframes, increase the complexity of realization
Degree.
It is, therefore, desirable to provide a kind of effective technical solution, to solve based on individual channel in empty co-located set with reference to money
Source carries out characteristic of channel measurement, the inadequate technical problem of precision, and for certain characteristic of channel parameters, can estimate
Range very little, the technical issues of being unable to satisfy the demand of system.
Summary of the invention
The purpose of the application aims to solve at least one of above-mentioned technical problem, and UE is made to maintain lower power consumption and complexity
Meanwhile a variety of downlink channel characteristics parameters can be accurately measured.
On the one hand the embodiment of the present application proposes a kind of method for carrying out downlink channel characteristics parameter measurement, including following step
It is rapid:
User equipment receives signaling, and the group for meeting the Multiple reference signal resource of empty co-located relationship is obtained from the signaling
Conjunction and its configuration information；
User equipment carries out downlink channel characteristics parameter in the Multiple reference signal resource for meeting empty co-located relationship
Measurement；
User equipment is according to measuring configuration, downlink channel characteristics parameter that reporting measurement obtains.
On the other hand the embodiment of the present application also proposed a kind of user equipment, including receiving module, measurement module and hair
Send module, in which:
The receiving module obtains from the signaling for receiving the signaling of base station transmission and meets empty co-located relationship
The combination of Multiple reference signal resource and its configuration information；
The measurement module, it is special for carrying out down channel in the Multiple reference signal resource for meeting empty co-located relationship
The measurement of property parameter；
The sending module, the downlink channel characteristics reporting parameters for being obtained measurement according to measuring configuration are to base station.
The above scheme that the application proposes provides one kind in each co-located set of void by reasonably selecting and configuring more
Weight reference signal resource allows UE to carry out the estimation of a variety of characteristic of channel parameters based on empty co-located Multiple reference signal resource
With the scheme of measurement.Multiple reference signal resource in empty co-located set, can be the multiple CSI-RS resource of configuration, can be with
It is the corresponding demodulated reference signal resource (DMRS) of multiple enhancing control channel collection (ePDCCH), is also possible to single or multiple
The combination of CSI-RS resource and the demodulated reference signal resource (DMRS) of single or multiple ePDCCH collection.The program passes through every
A co-located set configuration Multiple reference signal resource of void increases the reference signal resource element for measuring characteristic of channel parameter
It is combined in the granularity of time-frequency domain, while by reasonable disposition Multiple reference signal resource, effectively raises UE measurement
The precision of characteristic of channel parameter, while also improving the estimation range for the characteristic of channel parameter that UE can estimate.In addition, the application
The above scheme of proposition will not influence the compatibility of system to the change very little of existing system, and realize simple, efficient.
Detailed description of the invention
Fig. 1 be existing single antenna port under cell common reference signal (port0) and single CSI-RS(port15) money
Source schematic diagram；
Fig. 2 is the mapping pattern schematic diagram of CSI-RS resource under existing 2 antenna port (port15/port16)；
Fig. 3 is the method stream that the embodiment of the present application measures characteristic of channel parameter based on empty co-located Multiple reference signal resource
Cheng Tu；
Fig. 4 is that the application is empty co-located to combine Multiple reference signal resource by the different CSI-RS resource configuration of selection
Schematic diagram；
Fig. 5 is that the application combines that multiple CSI-RS resource is empty co-located to be shown by selecting different CSI-RS sub-frame configuration
It is intended to；
Fig. 6 is the application by selecting the demodulation reference channel resource of single CSI-RS resource and ePDCCH collection to match to combine
Set the empty co-located schematic diagram of Multiple reference signal resource；
Fig. 7 is the application by selecting the demodulated reference signal resource of multiple CSI-RS resource and ePDCCH collection to match to combine
Set the empty co-located schematic diagram of Multiple reference signal resource；
Fig. 8 is the structural schematic diagram of the embodiment of the present application user equipment (UE).
Specific embodiment
It is right hereinafter, referring to the drawings and the embodiments, for the objects, technical solutions and advantages of the application are more clearly understood
The application is described in further detail.
The application proposes a kind of configuration Multiple reference signal resource in empty co-located set, to improve downlink channel characteristics
The method of parameter measurement precision.
In the application, the combination of " multiple " reference signal resource includes both sides meaning: on the one hand, be can be same
Multiple reference signal resources of type are combined；On the other hand, it can be a variety of different types of one or more with reference to letter
Number resource is combined.
Specifically, the main idea of the present application lies in that: firstly, base station configures multiple reference signal resources at same TP
Hair constitutes the co-located set of void so that these reference signal resources be made to meet empty co-located relationship, and then, base station is by same void
The combination of multiple reference signal resources in co-located set and its configuration information are handed down to UE by high-level signaling, know UE full
The combination of the Multiple reference signal resource of the empty co-located relationship of foot and its configuration information, and surveyed on the Multiple reference signal resource
Downlink channel characteristics parameter is measured, due to increasing sample number, to improve measurement accuracy, and is increased under UE can estimate
The range of row characteristic of channel parameter.
The Multiple reference signal resource of the empty co-located relationship of the satisfaction of configuration can be multiple CSI-RS resource, be also possible to more
Demodulated reference signal (DMRS) resource of weight ePDCCH collection, can also be multiple or single CSI-RS resource and multiple or single
The combination of the DMRS resource of a ePDCCH collection.Fig. 2 gives the existing CSI-RS resource mapping pattern under 2 ports in subframe and shows
It is intended to.By number in figure it can be seen that sharing 20 kinds of different CSI-RS resource configurations, each CSI-RS resource is in a resource
There was only 2 resource elements in block.
In order to realize that the purpose of the application, the embodiment of the present application propose a kind of using empty co-located Multiple reference signal money
The method of source measurement downlink channel characteristics parameter, comprising the following steps: user equipment receives configuration and meets empty co-located relationship
The signaling of Multiple reference signal resource；User equipment obtains according to the signaling and measures void corresponding to downlink channel characteristics parameter
The combination of co-located reference signal resource and its corresponding configuration information；User equipment meets the more of empty co-located relationship using described
Weight reference signal resource carries out the measurement of downlink channel characteristics parameter；User equipment connects according to the downlink channel characteristics parameter of measurement
Receive Downlink Control Information and downlink data that base station is sent, and the downlink channel characteristics obtained according to the configuration reporting measurement of base station
Parameter.
Join as shown in figure 3, measuring downlink channel characteristics using empty co-located Multiple reference signal resource for the embodiment of the present application
Several method flow diagrams, comprising the following steps:
S110: user equipment receives signaling, and satisfaction void corresponding to the signaling instruction measurement characteristic of channel parameter is total
The Multiple reference signal resource of location relationship combines and its corresponding configuration information." it can also will meet empty co-located relationship below
Multiple reference signal resource combination " is known as " the Multiple reference signal resource in empty co-located set ".
In this step, base station can send the letter to user equipment by radio-resource-configuration message or control information
It enables.
In this step, the combination of the Multiple reference signal resource combination for meeting empty co-located relationship can use with
Any one or various ways use simultaneously down:
Combination one, by the way of frequency domain combination, configuration multi-channel reference resources meet empty co-located (QCL) and close
System selects multiple CSI-RS resource to be combined by CSI-RS resource configuration (CSI-RS configuration).Such as:
In the example shown in fig. 4, selection is that reference signal resource is configured to 0 and 2 CSI-RS resource and is combined.
Combination two is configured multiple CSI-RS resource and meets QCL relationship, that is, passed through by the way of temporal composition
CSI-RS sub-frame configuration (CSI-RS subframe configuration) selects the reference signal resource of different subframes to carry out group
It closes.Such as: in the example illustrated in fig. 5, what is selected is the reference that the reference signal sub-frame configuration in different subframes is 15,16,17
Signal resource is combined.
Combination three, the DMRS resource for configuring CSI-RS resource and ePDCCH collection meet QCL relationship.Compared to dynamically
The method for dispatching the DMRS enhancing QCL measurement accuracy of PDSCH, under this combination, the configuration of ePDCCH collection (such as occupancy
The index of PRB pair) it is to be semi-statically configured by high-level signaling.UE can be informed in one on some time-frequency locations of radio frames
It is fixed to there is the DMRS channel that can be used for enhancing QCL characteristic of channel measurement accuracy, to guarantee the robustness of QCL measurement.Here,
It is usually distribution ePDCCH collection for enhancing the ePDCCH collection of QCL characteristic of channel measurement accuracy.Distributed ePDCCH collection
DMRS is multiple UE shared, and transmission power is usually constant and worst according to channel quality on each PRB pair
UE be arranged, this is all conducive to improve QCL measurement accuracy.
Here the distributed ePDCCH collection introduced can be intended merely to utilize its DMRS enhancing QCL characteristic of channel measurement
Precision, without requiring UE that must detect the ePDCCH of scheduling downstream transmission using this ePDCCH collection simultaneously.Existing standard
4 kinds of QCL could support up to PDSCH it is assumed that still UE at most only detects two ePDCCH collection, therefore, according to the combination of the application
Mode three certainly exists such distribution ePDCCH collection, it can be used to enhance the precision that UE measures the QCL characteristic of channel,
But UE is not configured on distribution ePDCCH collection and detects ePDCCH.In fact, what is configured is special for enhancing QCL channel
Property measurement precision 4 distribution ePDCCH collection, can be totally different from UE detect ePDCCH ePDCCH collection.I.e. actually
At most there are 6 ePDCCH collection to a UE, wherein on 4 distribution ePDCCH collection, UE only needs to measure its DMRS in turn
The QCL characteristic of channel is obtained, other two ePDCCH collection needs both to detect DMRS or detects alternative ePDCCH channel.To a QCL
Parameter set, the distributed ePDCCH collection of enhancing QCL characteristic of channel measurement accuracy can also be exactly a detection of UE configuration
The ePDCCH collection of ePDCCH.In this way, UE actually detected ePDCCH collection number is correspondingly reduced.
Two examples are named to be illustrated combination three.
As shown in fig. 6, enabling 1 CSI-RS resource (resource distribution 0) DMRS resource corresponding with distribution ePDCCH collection
Meet QCL relationship, it is further assumed that distribution ePDCCH collection includes 4 PRB pairs, then essence is to utilize distribution ePDCCH collection
4 PRB pairs on DMRS port 107 and 109 come enhance using CSI-RS resource (resource distribution 0) measure QCL channel
Feature accuracy.
As shown in fig. 7, enabling 2 CSI-RS resource (resource distribution is 0 and 2) full with the DMRS resource of distribution ePDCCH collection
Sufficient QCL relationship, it is further assumed that distribution ePDCCH collection includes 4 PRB pairs, then essence is to utilize distribution ePDCCH collection
DMRS port 107 and 109 on 4 PRB pairs enhances the QCL channel using CSI-RS resource (resource distribution is 0 and 2) measurement
Feature accuracy.
In the application step S110, when selection meets the multiple CSI-RS resource combination of empty co-located relationship, selection mode
Can be it is following any one:
Selection mode one arbitrarily selects CSI-RS resource to be combined from optional CSI-RS resource.
Selection mode two, according to the correlation properties of the requirement of measurement characteristic of channel parameter and the temporal frequency domain of channel, choosing
It is relatively strong and be that CSI-RS resource on different time domain symbol is combined to select correlation properties.
As shown in figure 4, if it is considered that temporal frequency domain correlation, time domain difference is selected in same subframe and frequency is adjacent
Resource be combined, such as the CSI-RS resource for being configured to 0 and 2 to reference signal resource is combined.
As shown in figure 5, if it is considered that temporal frequency domain correlation, is matched between different subframes by selection CSI-RS subframe
It sets, selects there is same period and the CSI-RS resource adjacent in time domain, such as selecting reference signal sub-frame configuration is 15,16,17
Reference signal resource be combined, in this way combination in reference signal resource in adjacent sub-frame 0,1,2.
In the application step S110, user equipment assume that the Multiple reference signal money in the co-located set of void of acquisition
Source is consistent following one or more kinds of characteristic of channel parameters:
Delay spread；
Average gain；
Frequency shift (FS)；
Doppler spread；
Average delay.
The signaling described in the application step S110 should include following one or more kinds of information:
1) number of CSI-RS in combining, it may be assumed that the size of multiple CSI-RS resource combination.
2) resource distribution of CSI-RS in combining.The signaling can provide specific configuration combination, such as use in the signaling 0,
2 } representing and selecting resource distribution is that 0,2 CSI-RS resource is combined；From save signaling overheads angle can also by it is all can
Capable resource distribution is combined, it is numbered, and indicates corresponding number number.For 1 antenna port or 2 antenna ports
The case where (referred to as 1/2 antenna port), considers that traversing all combinations will have when combined size is 2Kind combination, can
To thisA combination is numbered, or selects subset therein to be numbered according to channel relevancy and the demand of measurement.
It is illustrated below by table 1.
Table 1 lists the list that part resource in the case that the combined size under 1/2 antenna port is 2 combines subset.
Table 1
According to table 1, it is assumed that it is 0 that user equipment, which receives combination number, you can learn that the resource distribution group in present combination
It is combined into { 0,1 }.
3) sub-frame configuration of channel reference resource in combining.The signaling can provide specific configuration combination as 15,16,
17 } it represents and sub-frame configuration is selected to be combined as the resource of { 15,16,17 }, or provide combined size and combine interior resource
Sub-frame configuration is originated, such as: combined size 3, starting sub-frame configuration can be obtained sub-frame configuration collection for 15 and be combined into { 15,16,17 }.
4) the instruction information of empty co-located ePDCCH collection, the PRB pair index for being included including ePDCCH collection, DMRS sequence
Initialization value etc..
S120: user equipment satisfaction void according to corresponding to the signaling acquisition measurement downlink channel characteristics parameter received is total
The combination of the reference signal resource of location relationship and its corresponding configuration information.
In this step, user equipment obtains the combination and its mode of corresponding configuration information depends in step S110
The mode of signaling carrying corresponding information.Specifically, the group of Multiple reference signal resource can be obtained by following several modes
Conjunction and its corresponding configuration information.
Acquisition pattern one: specification definition tables, signaling provide combined size and pre-defined combination of resources number, Yong Hushe
It is standby according to the signaling search table predetermined combined in Multiple reference signal resource specific configuration information.Example
Such as: according to table 1, it is 2 that user equipment, which receives combination number, while combined size is 2, that is, may know that the resource in present combination
Configuration group is combined into { 0,2 }.
Acquisition pattern two: specific combination is provided by signaling, user equipment receives signaling and just obtains multiple ginseng in combination
Examine the configuration of signal resource.
S130: user equipment is according to the survey for carrying out downlink channel characteristics parameter using empty co-located Multiple reference signal resource
Amount.
In this step, user equipment can use the Multiple reference signal resource for meeting empty co-located relationship to down channel
Characterisitic parameter measures.The characteristic of channel parameter that can be measured includes following one or more kinds of:
Delay spread；
Average gain；
Frequency shift (FS)；
Doppler spread；
Average delay；
Channel quality information；
Reference Signal Received Power；
Reference Signal Received Quality.
S140: the Downlink Control Information and lower line number that base station is sent are received according to the downlink channel characteristics parameter that measurement obtains
According to, and according to the configuration of base station, downlink channel characteristics parameter that reporting measurement obtains.
Corresponding to the above method, the embodiment of the present application also proposed a kind of user equipment as shown in Figure 8, the user equipment
Including receiving module 110, measurement module 120 and sending module 130, in which:
Receiving module 110 obtains from the signaling for receiving the signaling of base station transmission and meets the more of empty co-located relationship
The combination of weight reference signal resource and its corresponding configuration information；
Measurement module 120, it is special for carrying out down channel in the Multiple reference signal resource for meeting empty co-located relationship
The measurement of property parameter；
Sending module 130, the downlink channel characteristics reporting parameters for being obtained measurement according to measuring configuration are to base station.
Preferably, the Multiple reference signal resource for meeting empty co-located relationship refers to: the Multiple reference signal resource
Be consistent to following one or more kinds of characteristic of channel parameters: delay spread, average gain, frequency shift (FS), Doppler expand
Exhibition, average delay；
The measurement module, for measuring one or more of following downlink channel characteristics parameter: delay spread is put down
Equal gain, frequency shift (FS), doppler spread, average delay, channel quality information, Reference Signal Received Power, reference signal connect
Receive quality.
Wherein, the combination of the Multiple reference signal resource combination of the empty co-located relationship of satisfaction acquired in receiving module can
It, can be with to be combined according to foregoing three kinds of combinations, also, when selecting multiple CSI-RS resource to be combined
It is selected according to foregoing two kinds of selection modes, details are not described herein.
The application propose the above method or equipment, provide one kind in each co-located set of void by reasonably select with
Multiple reference signal resource is configured, UE is allow to carry out a variety of characteristic of channel parameters based on empty co-located Multiple reference signal resource
Estimation and measurement scheme.Simultaneously by configuring Multiple reference signal resource, the channel that user equipment is capable of handling is increased
The range of characterisitic parameter also can guarantee enough measurement accuracy when Measurement bandwidth is smaller, avoid UE in excessive Measurement bandwidth
Measure and carry out for a long time the measurement of downlink channel characteristics parameters, the complexity of effective guarantee system and user equipment
Power consumption.In addition, the above scheme that the application proposes will not influence the compatibility of system to the change very little of existing system, and
It realizes simple, efficient.
The application in order to facilitate understanding, referring to the drawings and concrete application scene of illustrating is described further.
Application scenarios one: the Multiple reference signal resource of empty co-located set configuration are as follows: multiple CSI-RS resource, and identical
Multiple CSI-RS resource configurations under sub-frame configuration.
Such as Fig. 2 and Fig. 4, this application scene description Multiple reference signal resource of the empty co-located relationship of satisfaction of base station configuration
Combination is realized by CSI-RS resource different under selection same subframe.
Step 1: base station, which passes through the configuration that the Multiple reference signal resource in the co-located set of void of current-configuration combines, is
Information of uniting informs UE.Specific signaling content is as follows:
CSI-RS resource number in combining: 2；
CSI-RS resource configuration in combination: can provide specific configuration 0 and 2 or provide the numbering of table of combination,
Such as the number 2 in table 1.
Step 2: UE receives the configuration information about multi-channel reference channel combination of resources, is known according to system information and is worked as
The resource distribution of preceding multiple CSI-RS is { 0,2 }.
Step 3: UE according to the resource distribution of the Multiple reference signal of acquisition, to the resource element on respective resources position into
Row operation, measures downlink channel characteristics parameter, specifically include: delay spread, average gain, frequency shift (FS), doppler spread are put down
Equal time delay, channel quality information, CSI-RS receive power, the CSI-RS quality of reception.
Step 4: UE reports the measurement result of downlink channel characteristics parameter in time of measuring, comprising: channel quality information,
CSI-RS receives power, the CSI-RS quality of reception.
Application scenarios two: the Multiple reference signal resource group of the empty co-located relationship of the satisfaction of configuration is combined into single CSI-RS resource
With the demodulated reference signal resource of ePDCCH collection, as shown in Figure 7.
This application scene description base station configure a plurality of types of reference signal resources be combined it is empty co-located, will be single
CSI-RS resource and ePDCCH collection are combined.
Step 1: the information for the Multiple reference signal resource combination in the co-located set of void that base station is currently configured passes through system
Information informs UE.Specific signaling content is as follows:
CSI-RS configuration information in empty co-located set:
The resource distribution of CSI-RS combination: 0；
Empty co-located ePDCCH collection indicates information, including the PRB pair index that ePDCCH collection includes, the initialization of DMRS sequence
Value etc..
Step 2: UE receives the configuration information about empty co-located Multiple reference channel resource combination, is obtained according to system information
The resource distribution for knowing current empty co-located CSI-RS is 0, while current empty total according to the instruction acquisition of empty co-located ePDCCH collection
The configuration information of the demodulated reference signal resource of the ePDCCH collection of location.
Step 3: UE according to the resource distribution of the Multiple reference signal of acquisition, to the resource element on respective resources position into
Row operation, measures downlink channel characteristics parameter, specifically include: delay spread, average gain, frequency shift (FS), doppler spread are put down
Equal time delay, channel quality information, CSI-RS receive power, the CSI-RS quality of reception.
Step 4: UE reports the measurement result of downlink channel characteristics parameter in time of measuring according to measuring configuration.
Application scenarios three: the Multiple reference signal resource group for meeting empty co-located set is combined into the Multiple reference in different subframes
Signal resource, as shown in Figure 6.This application scene description is base station selected to combine Multiple reference signal resource in adjacent sub-frame.It is right
The signaling combination answered are as follows: indicate that combined size is and combines corresponding resource sub-frame configuration set, to inform that user is currently more
The configuration information of weight reference signal resource combination.
Step 1: the information of the co-located Multiple reference signal resource combination of the void that base station is currently configured is accused by system information
Know UE.Specific signaling content is as follows:
Antenna port number: 2；
CSI-RS resource number in combining: 3；
Combined CSI-RS resource configuration: 0；
Combined CSI-RS resource sub-frame configuration set: { 15,16,17 }.
Step 2: UE receives the configuration information about Multiple reference signal resource combination in empty co-located set, is believed according to system
Breath knows that the resource distribution of current multiple CSI-RS is 0, and corresponding subframe is { 0,1,2 }, transmission cycle 20ms.
Step 3: UE according to the resource distribution of the Multiple reference signal of acquisition, to the resource element on respective resources position into
Row operation, measures downlink channel characteristics parameter, specifically include: delay spread, average gain, frequency shift (FS), doppler spread are put down
Equal time delay, channel quality information, CSI-RS receive power, the CSI-RS quality of reception.
Step 4: the measurement result of UE reporting channel characterisitic parameter in time of measuring.
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, can integrate in a processing module in each functional unit in each embodiment of the application
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (16)
1. a kind of method for carrying out downlink channel characteristics parameter measurement, which comprises the following steps:
User equipment receives signaling, obtained from the signaling combination for meeting the Multiple reference signal resource of empty co-located relationship and
Its configuration information；The Multiple reference signal resource for meeting empty co-located relationship refers to: the Multiple reference signal resource is to such as
Under one or more kinds of characteristic of channel parameters be consistent: it is delay spread, average gain, frequency shift (FS), doppler spread, flat
Equal time delay；
User equipment carries out the measurement of downlink channel characteristics parameter in the Multiple reference signal resource for meeting empty co-located relationship；
User equipment is according to measuring configuration, downlink channel characteristics parameter that reporting measurement obtains.
2. the method as described in claim 1, it is characterised in that:
It is described to be measured as measuring one or more of following downlink channel characteristics parameter: delay spread, average gain, frequency
Offset, doppler spread, average delay, channel quality information, Reference Signal Received Power, Reference Signal Received Quality.
3. the method as described in claim 1, it is characterised in that:
The combination of the Multiple reference signal resource include: same type of multiple reference signal resources are combined, or
Person is combined different types of one or more reference signal resources；
The type of the reference signal resource includes: channel status instruction reference signal CSI-RS resource, enhancing physical down control
The corresponding demodulated reference signal DMRS resource of channel ePDCCH collection processed.
4. method as claimed in claim 3, which is characterized in that the combination of Multiple reference signal resource combination includes
Following one or more mode uses simultaneously:
By selecting different CRI-RS resource distributions, multiple CRI-RS resources in the same subframe are combined；
By selecting the sub-frame configuration of different CRI-RS resources, the CRI-RS resource of different subframes is combined；
Single or multiple CRI-RS resources and the DMRS resource of single or multiple ePDCCH collection are combined.
5. method as claimed in claim 4, which is characterized in that when being combined to CSI-RS resource, it then follows following principle:
It is randomly choosed in currently available CSI-RS resource；
It is related to time-frequency domain channel special according to downlink channel characteristics parameter to be measured in currently available CSI-RS resource
Property, it selects channel correlation properties by force and the reference signal resource on different time domain symbol is combined.
6. method as claimed in claim 5, which is characterized in that the mode packet of the strong CSI-RS resource of selection channel correlation properties
It includes:
The CSI-RS resource that on different time domain symbol and frequency domain is adjacent is selected to be combined in the same subframe；
The CSI-RS resource for selecting sub-frame configuration adjacent in different subframes is combined.
7. method as claimed in claim 3, it is characterised in that:
The ePDCCH collection is distributed ePDCCH collection；
The ePDCCH collection is an ePDCCH collection for configuring UE detection ePDCCH；Alternatively, the ePDCCH collection is not configuration UE
Detect an ePDCCH collection of ePDCCH.
8. method as claimed in claim 3, which is characterized in that include one or more of information in the signaling:
The size of multiple CSI-RS resource combination；
The corresponding number of multiple CSI-RS resource combination；
Multiple CSI-RS resource combines corresponding CSI-RS resource configuration set；
Multiple CSI-RS resource combines corresponding CSI-RS sub-frame configuration set；
The instruction information of empty co-located ePDCCH collection.
9. a kind of user equipment characterized by comprising receiving module, measurement module and sending module, in which:
The receiving module obtains from the signaling for receiving the signaling of base station transmission and meets the multiple of empty co-located relationship
The combination of reference signal resource and its configuration information；The Multiple reference signal resource for meeting empty co-located relationship refers to: described
Multiple reference signal resource is consistent following one or more kinds of characteristic of channel parameters: delay spread, average gain, frequency
Rate offset, doppler spread, average delay；
The measurement module, for carrying out downlink channel characteristics ginseng in the Multiple reference signal resource for meeting empty co-located relationship
Several measurements；
The sending module, the downlink channel characteristics reporting parameters for being obtained measurement according to measuring configuration are to base station.
10. user equipment as claimed in claim 9, it is characterised in that:
The measurement module, for measuring one or more of following downlink channel characteristics parameter: delay spread, average increasing
Benefit, frequency shift (FS), doppler spread, average delay, channel quality information, Reference Signal Received Power, reference signal receive matter
Amount.
11. user equipment as claimed in claim 9, it is characterised in that:
The combination of the Multiple reference signal resource include: same type of multiple reference signal resources are combined, or
Person is combined different types of one or more reference signal resources；
The type of the reference signal resource includes: channel status instruction reference signal CSI-RS resource, enhancing physical down control
The corresponding demodulated reference signal DMRS resource of channel ePDCCH collection processed.
12. user equipment as claimed in claim 11, which is characterized in that the combination side of the Multiple reference signal resource combination
Formula includes following one or more kinds of modes while using:
By selecting different CRI-RS resource distributions, multiple CRI-RS resources in the same subframe are combined；
By selecting the sub-frame configuration of different CRI-RS resources, the CRI-RS resource of different subframes is combined；
Single or multiple CRI-RS resources and the DMRS resource of single or multiple ePDCCH collection are combined.
13. user equipment as claimed in claim 12, which is characterized in that when being combined to CSI-RS resource, it then follows with
Lower principle:
It is randomly choosed in currently available CSI-RS resource；
It is related to time-frequency domain channel special according to downlink channel characteristics parameter to be measured in currently available CSI-RS resource
Property, it selects channel correlation properties by force and the reference signal resource on different time domain symbol is combined.
14. user equipment as claimed in claim 13, which is characterized in that the strong CSI-RS resource of selection channel correlation properties
Mode includes:
The CSI-RS resource that on different time domain symbol and frequency domain is adjacent is selected to be combined in the same subframe；
The CSI-RS resource for selecting sub-frame configuration adjacent in different subframes is combined.
15. user equipment as claimed in claim 11, it is characterised in that:
The ePDCCH collection is distributed ePDCCH collection；
The ePDCCH collection is an ePDCCH collection for configuring UE detection ePDCCH；Alternatively, the ePDCCH collection is not configuration UE
Detect an ePDCCH collection of ePDCCH.
16. user equipment as claimed in claim 11, which is characterized in that include that one or more of is believed in the signaling
Breath:
The size of multiple CSI-RS resource combination；
The corresponding number of multiple CSI-RS resource combination；
Multiple CSI-RS resource combines corresponding CSI-RS resource configuration set；
Multiple CSI-RS resource combines corresponding CSI-RS sub-frame configuration set；
The instruction information of empty co-located ePDCCH collection.
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| CN201310019984.3A CN103945447B (en) | 2013-01-18 | 2013-01-18 | A kind of method and user equipment carrying out downlink channel characteristics parameter measurement |
| CN201910968723.3A CN110602743B (en) | 2013-01-18 | 2013-01-18 | Method for measuring characteristic parameters of downlink channel and user equipment |
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| CN201310019984.3A CN103945447B (en) | 2013-01-18 | 2013-01-18 | A kind of method and user equipment carrying out downlink channel characteristics parameter measurement |
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| CN201910968723.3A Division CN110602743B (en) | 2013-01-18 | 2013-01-18 | Method for measuring characteristic parameters of downlink channel and user equipment |
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| CN201910968723.3A Active CN110602743B (en) | 2013-01-18 | 2013-01-18 | Method for measuring characteristic parameters of downlink channel and user equipment |
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| CN110602743B (en) | 2022-09-09 |
| CN103945447A (en) | 2014-07-23 |
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