CN103546207B

CN103546207B - CSI-RS acquisitions, CSI-RS report methods and device

Info

Publication number: CN103546207B
Application number: CN201210235605.XA
Authority: CN
Inventors: 黄河; 施小娟; 黄亚达; 刘扬
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2018-10-16
Anticipated expiration: 2032-07-09
Also published as: CN103546207A

Abstract

The invention discloses a kind of channel state information reference signals（CSI‑RS）It obtains, CSI RS report methods and device, wherein this method includes：Network side sends rrc layer message, wherein the instruction information that terminal needs the transmission node measured is carried in the rrc layer message；The network side receives the measurement report that the terminal reports, wherein the measurement result of one or more of the transmission node for needing the to measure CSI RS of transmission node is carried in the measurement report.The present invention solve terminal in the prior art be difficult to by physical layer control channel network side is difficult to know the signal quality of all transmission nodes caused by feedback information carries the channel state information reference signals of all transmission nodes the technical issues of, network side is allow to obtain the measurement result of the CSI RS of all transmission nodes, to improve the accuracy of network side dynamic dispatching and the efficiency of transmission of CoMP.

Description

CSI-RS acquisitions, CSI-RS report methods and device

Technical field

The present invention relates to the communications fields, in particular to a kind of channel state information reference signals (Channel- State Information reference Signal, referred to as CSI-RS) acquisition, CSI-RS report methods and device.

Background technology

In order to provide a user the various businesses contents such as voice, grouped data and broadcast, cordless communication network quilt Widespread deployment, in order to meet the demand of user's growing communication quality and traffic rate, wireless communication technique (wireless network Network) constantly evolution development.Cordless communication network is from global system for mobile communications (Global System For Mobile Communication, referred to as GSM)/general wireless packet service system (General Packet Radio Service, letter Referred to as GPRS) third generation mobile communication network of 2nd generation/the 2.5th evolves to Universal Mobile Communication System (Universal Mobile Telecommunications System, referred to as UMTS) third generation mobile communications network.However, in order to preferably improve frequency Service efficiency is composed, to meet the wireless communication needs that user is skyrocketed through, third generation partner program (The 3rd Generation Partnership Project, referred to as 3GPP) tissue again proposed on the basis of UMTS the 4th generation movement The communication technology " long term evolution " (Long Term Evolution, referred to as LTE) and its further technology " the advanced length of evolution Phase evolution " (Long Term Evolution Advance, referred to as LTE-A).

Cordless communication network usually can support multiple access by shared system resource, in addition cordless communication network Support the mobility of terminal device (User Equipment, referred to as UE).In view of above-mentioned consideration, in order to effectively utilize system Resource, while providing good service communication to the user, cordless communication network needs to carry out effective resource management.With LTE systems For system, measurement or base of the evolved base station (enhanced NodeB, referred to as eNB) based on eNB to uplink reference signals In measurements of the UE to downlink reference signal, quality of wireless channel can be obtained, and considers other factors and carries out radio resource Management.For example, considering quality of wireless channel, service distribution, adjacent area load, hardware resource and operator policies etc. It is attached mobility control (Connection Mobility Control, referred to as CMC)；Consider wireless channel matter Amount and resource service condition carry out scheduling of resource (Resource Scheduling, referred to as RS)；Consider wireless channel matter Amount, business load carry out interference coordination (Inter-cell Interference Coordination, referred to as ICIC) etc.. Wherein, UE refers to reference signal (the Cell-specific reference of UE measurement cell-specifics to downlink reference signal measurement Signals, referred to as CRS) and by measurement feedback to eNB.Simultaneously, it is contemplated that the fluctuation that physical layer measures is marked at present L3 filtering is introduced in high level in standard, centainly smooth is carried out to the result of current measurement using historical measurement.

In order to meet the performance indicator of LTE-A, 3GPP introduce CoMP (Coordinated Multi Point, referred to as CoMP) transmission technology, the principle of CoMP technologies are to utilize the multiple eNB detached on geographical location, or the multiple transmission nodes of title (Transmission Point, referred to as TP) simultaneously participates in the data transmission with the same UE.Can be had using CoMP technologies Effect ground improves the user performance of cell edge, effectively inhibits inter-cell interference；At the same time it can also increase covering for high data rate Lid, to improve the handling capacity of cell edge, further increases throughput of system.

When using CoMP technologies, in order to weigh the signal quality for the transmission node that these simultaneously participate in transmission, 3GPP introduces channel state information reference signals (Channel-State Information reference Signal, letter Referred to as CSI-RS).UE can will participate in the channel of the transmission node of transmission in data transmission in the feedback information of data transmission State information reference signals feed back to network side, and network side will use this information to carry out dynamic dispatching.As shown in Figure 1, in CoMP In usage scenario, the number of the transmission node of transmission can be participated in commonly greater than the number of UE transmission nodes used at the same time, net Network side needs transmission node of the selection for simultaneous transmission from numerous transmission nodes, therefore network side needs to know all transmission The signal quality of node obtains the corresponding channel state information reference signals of all transmission nodes.In view of the object of physical layer The limitation of control channel bearing capacity is managed, UE is difficult to carry all transmission nodes in feedback information by physical layer control channel Channel state information reference signals.

For above-mentioned problem, currently no effective solution has been proposed.

Invention content

The present invention provides a kind of CSI-RS acquisition methods and device, CSI-RS report methods and devices, at least to solve Terminal is difficult to carry the channel state information of all transmission nodes in feedback information by physical layer control channel in the prior art Network side is difficult to know the technical issues of signal quality of all transmission nodes caused by reference signal.

According to an aspect of the invention, there is provided a kind of channel state information reference signals CSI-RS acquisition methods, packet It includes：Network side sends rrc layer message, wherein the instruction letter that terminal needs the transmission node measured is carried in rrc layer message Breath；Network side receives the measurement report that terminal reports, wherein one in the transmission node of measurement in need is carried in measurement report The measurement result of the CSI-RS of a or multiple transmission nodes.

Preferably, rrc layer message is RRC reconfiguration messages.

Preferably, the trigger condition of triggering terminal reporting measurement reports is also carried in rrc layer message.

Preferably, trigger condition includes at least one of：One or more of transmission node measured is needed to transmit The measurement result of the corresponding CSI-RS of node becomes smaller than the first predetermined threshold by being not less than the first predetermined threshold；It needs to measure The measurement result of the corresponding CSI-RS of one or more of transmission node transmission node is become from being not more than the second predetermined threshold More than the second predetermined threshold；The measurement result of CSI-RS in the transmission node measured is needed to be more than the transmission section of third predetermined threshold The number of point changes compared with being more than the number of transmission node of third predetermined threshold in last measurement result；It needs to survey The measurement result of CSI-RS is less than the number of the transmission node of the 4th predetermined threshold in the transmission node of amount and last measure is tied It compares and changes less than the number of the transmission node of the 4th predetermined threshold in fruit；The transmission node of measurement in need CSI- The average value of the measurement result of RS is more than the 5th predetermined threshold；The CSI-RS of the transmission node of measurement in need measurement result Average value be less than the 6th predetermined threshold；It needs to be more than the 7th predetermined threshold in the transmission node measured in the measurement result of CSI-RS The composition of the composition of the transmission node of value and the transmission node for being more than the 7th predetermined threshold in the measurement result of last time CSI-RS It is different；Need the arrangement in the transmission node measured in the measurement result of CSI-RS more than the transmission node of the 8th predetermined threshold suitable The difference that puts in order of sequence and the transmission node for being more than the 8th predetermined threshold in the measurement result of last time CSI-RS；It needs to measure Transmission node in the measurement result of the CSI-RS of specific one or multiple transmission nodes put in order and the last spy The difference that puts in order of the measurement result of the CSI-RS of fixed one or more transmission nodes；It needs in the transmission node measured The composition of strongest N number of measurement result and strongest N number of measurement result in last measurement result in the measurement result of CSI-RS Composition it is different, wherein N is positive integer；Need strongest M transmission in the measurement result of CSI-RS in the transmission node measured The difference that puts in order of node to put in order with strongest M transmission node in the measurement result of last time CSI-RS, wherein M is positive integer.

Preferably, M and N is carried out configuration and/or the value of make an appointment in a standard M and N by network side in RRC information.

Preferably, the measurement result of CSI-RS is that the result obtained after being measured to transmission node adds scheduled offset Result after value.

Preferably, it is each the transmission node measured to be needed to configure identical or different deviant.

Preferably, the 5th predetermined threshold is the measurement result of the CSI-RS or CRS of best adjacent area.

Preferably, last measurement result is the measurement result for terminal the last time being reported to network side.

Preferably, time span instruction information is also carried in rrc layer message, wherein time span instruction information is used for The duration that instruction terminal meets trigger condition in the measurement result for determining CSI-RS is greater than or equal to time span instruction letter In breath when scheduled time span, reporting measurement reports.

Preferably, measurement report carries the measurement result of the CSI-RS of the transmission node of at least one of：It needs to survey The measurement result of CSI-RS is more than the transmission node of the tenth predetermined threshold in the transmission node of amount；It needs in the transmission node measured The measurement result of CSI-RS is more than the 11st predetermined threshold, and is greater than or equal in advance more than the duration of the 11st predetermined threshold The transmission node of fixed time threshold；Q transmission sections before needing the measurement result of CSI-RS in the transmission node measured to come Point, wherein Q is positive integer；The measurement result of CSI-RS in the transmission node measured is needed to meet the triggering of this measurement of triggering The transmission node of condition.

Preferably, the CRS measurement results of serving cell are also carried in measurement report.

Preferably, L3 filtering parameters are also carried in RRC information, wherein L3 filtering parameters are used to indicate terminal according to L3 Filtering parameter is reported to network side after being filtered to measurement result.

Preferably, after network side sends rrc layer message, the above method further includes：In the process that terminal measures In, the lateral terminal of network sends the first abort message for stopping reporting measurement reports and/or stops the second abort message measured.

Preferably, the first abort message is carried by PDCCH physical channels and/or RRC signaling, and the second abort message passes through PDCCH physical channels and/or RRC signaling carrying.

Preferably, network side stops one or more of transmission node measured needs and passes one of in the following manner The measurement of defeated node：Network side sends the instruction information for the measurement for stopping the one or more transmission node；Or network side is deleted Except the one or more transmission node.

According to another aspect of the present invention, a kind of channel state information reference signals CSI-RS report methods are provided, Including：Terminal receives the rrc layer message that network side is sent, wherein carries terminal in rrc layer message and needs the transmission section measured The instruction information of point；Terminal-pair needs the transmission node measured to measure；Terminal is to network side reporting measurement reports, wherein The measurement result of the CSI-RS of one or more of the transmission node of measurement in need transmission node is carried in measurement report.

Preferably, in terminal to before network side reporting measurement reports, the above method further includes：Terminal judges the knot measured Whether fruit meets the trigger condition carried in rrc layer message；If it is satisfied, then terminal is to network side reporting measurement reports.

Preferably, after terminal judges that the result measured meets the trigger condition carried in rrc layer message, the above method Further include：Terminal judges whether the time for meeting trigger condition is greater than or equal to preset time span；If it is, eventually Hold reporting measurement reports.

Preferably, in terminal to before network side reporting measurement reports, the above method further includes：Terminal is according to RRC information The L3 filtering parameters of middle carrying are filtered measurement result；Terminal is using the measurement result after being filtered as survey Amount report.

According to a further aspect of the invention, a kind of channel state information reference signals CSI-RS acquisition device is provided, Positioned at network side, including：Sending module, for sending rrc layer message, wherein carry terminal in rrc layer message and need to measure Transmission node instruction information；Receiving module, the measurement report reported for receiving terminal, wherein carried in measurement report The measurement result of the CSI-RS of one or more of the transmission node of measurement in need transmission node.

According to a further aspect of the invention, a kind of channel state information reference signals CSI-RS reporting devices are provided, In terminal, including：Receiving module, the rrc layer message for receiving network side transmission, wherein carried in rrc layer message Terminal needs the instruction information of the transmission node measured；Measurement module, the transmission node for measuring needs measure；On Module is reported, is used for network side reporting measurement reports, wherein carry one in the transmission node of measurement in need in measurement report The measurement result of the CSI-RS of a or multiple transmission nodes.

Preferably, reporting module includes：Judging unit is carried for judging whether measurement result meets in rrc layer message Triggering terminal reporting measurement reports trigger condition；Reporting unit, for the reporting measurement report when determination meets trigger condition It accuses.

In the present invention, the instruction information measured to transmission node by rrc layer message, terminal is in response to the RRC The measurement result of the CSI-RS of layer information reporting, solves terminal in the prior art and is difficult to feeding back by physical layer control channel Network side is difficult to know all transmission nodes caused by information carries the channel state information reference signals of all transmission nodes Signal quality the technical issues of so that network side can obtain the measurement result of the CSI-RS of all transmission nodes, to carry The high accuracy of network side dynamic dispatching and the efficiency of transmission of CoMP.

Description of the drawings

Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：

Fig. 1 is the CoMP deployment scenario schematic diagrames according to the relevant technologies；

Fig. 2 is a kind of preferred flow charts of CSI-RS acquisition methods according to the ... of the embodiment of the present invention；

Fig. 3 is a kind of preferred flow charts of CSI-RS report methods according to the ... of the embodiment of the present invention；

Fig. 4 is another preferred flow charts of CSI-RS report methods according to the ... of the embodiment of the present invention；

Fig. 5 is a kind of preferred structure block diagram that CSI-RS according to the ... of the embodiment of the present invention reported and obtained system；

Fig. 6 is the flow chart that event triggering CSI-RS according to the ... of the embodiment of the present invention is reported；

Fig. 7 is the flow chart for the UE inter-process that event triggering CSI-RS according to the ... of the embodiment of the present invention is reported.

Specific implementation mode

Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.

The present invention provides a kind of preferred CSI-RS acquisition methods, as shown in Fig. 2, including the following steps：

Step S202：Network side sends rrc layer message, wherein carries terminal in rrc layer message and needs the transmission measured The instruction information of node；

Step S204：Network side receives the measurement report that terminal reports, wherein measurement in need is carried in measurement report The measurement result of the CSI-RS of one or more of transmission node transmission node.

In above-mentioned preferred embodiment, the instruction information measured to transmission node by rrc layer message, terminal is rung It should solve terminal in the prior art in the measurement result of the CSI-RS of the rrc layer information reporting and is difficult to control by physical layer Channel network side caused by feedback information carries the channel state information reference signals of all transmission nodes is difficult to know institute There is the technical issues of signal quality of transmission node so that network side can obtain the measurement knot of the CSI-RS of all transmission nodes Fruit, to improve the accuracy of network side dynamic dispatching and the efficiency of transmission of CoMP.

In a preferred embodiment, above-mentioned rrc layer message can be RRC reconfiguration messages, RRC reconfiguration messages It is intended only as a kind of preferred mode, can also be transmitted using others L3 signalings, not limited herein.

One can be preset and measure the trigger condition reported, that is, only when measurement result meets the triggering of the setting When condition, terminal is just to network side report measurement results.The trigger condition that several exemplaries are given below is described, but this It invents without being limited thereto：

1) need the measurement result of one or more of the transmission node measured the corresponding CSI-RS of transmission node by not The first predetermined threshold is become smaller than less than the first predetermined threshold；

2) need the measurement result of one or more of the transmission node measured the corresponding CSI-RS of transmission node by not The second predetermined threshold is become greater than more than the second predetermined threshold；

For above-mentioned 1) with 2) be exactly in measurement result there are one or multiple measurement results compared greatly with scheduled threshold value Small relationship is changed, and from large to small or is changed from small to big.

3) measurement result of CSI-RS in the transmission node measured is needed to be more than of the transmission node of third predetermined threshold Number changes compared with being more than the number of transmission node of third predetermined threshold in last measurement result；

4) measurement result of CSI-RS in the transmission node measured is needed to be less than of the transmission node of the 4th predetermined threshold Number changes compared with being less than the number of transmission node of the 4th predetermined threshold in last measurement result；

For above-mentioned 3) and 4) be exactly in all measured transmission nodes, measurement result be more than a predetermined value or The number of transmission node that person is less than a predetermined value is changed, for example, last time is more than 10 to have 5, and this surpasses Crossing 10 has 7.

5) the measurement result of the CSI-RS of the transmission node of measurement in need average value be more than the 5th predetermined threshold；

6) the measurement result of the CSI-RS of the transmission node of measurement in need average value be less than the 6th predetermined threshold.

It is above-mentioned 5) and 6) in mainly the triggering that the average value of all measured transmission nodes carries out is judged.It is excellent Selection of land, the 5th predetermined threshold can choose the measurement result of the CSI-RS of best adjacent area.

7) transmission node for being more than the 7th predetermined threshold in the transmission node measured in the measurement result of CSI-RS is needed It constitutes different from the composition of transmission node of the 7th predetermined threshold is more than in the measurement result of last time CSI-RS；

For example, having preset a threshold value, there is the measurement result of several transmission nodes to be more than in upper primary measurement The threshold value, and in this measurement result, and there is the measurement result of other transmission nodes to be more than the threshold value, that is, above-mentioned structure What it is at finger is exactly that the measurement result of which transmission node has been more than scheduled threshold value.

8) transmission node for being more than the 8th predetermined threshold in the transmission node measured in the measurement result of CSI-RS is needed The difference that puts in order to put in order with the transmission node for being more than the 8th predetermined threshold in the measurement result of last time CSI-RS；

That is, in this measurement, the measurement result more than the transmission node of given threshold puts in order and last time phase Than being changed.

9) row of the measurement result of the CSI-RS of specific one or multiple transmission nodes in the transmission node measured is needed Row sequence and it is last this specific one or multiple transmission nodes CSI-RS measurement result the difference that puts in order.That is, It selectes or sets several special transmission nodes, if putting in order for the measurement result of these transmission nodes has occurred Variation just is triggered to measure and be reported.

10) need in the transmission node that measures in the measurement result of CSI-RS the composition of strongest N number of measurement result with it is upper The composition of strongest N number of measurement result is different in one-shot measurement result, wherein N is positive integer；

11) putting in order for strongest M transmission node in the measurement result of CSI-RS is needed in the transmission node that measures With the difference that puts in order of strongest M transmission node in the measurement result of last CSI-RS, wherein M is positive integer.

Above-mentioned M and N can be configured by network side, can also be provided by agreement.When N or M is 1, meaning is exactly The measurement result of strongest transmission node is changed.

In above-mentioned each preferred embodiment, last measurement result is exactly to be reported to network side terminal the last time Measurement result.

For in above-mentioned a variety of trigger condition, can be after plus scheduled deviant again with setting Threshold value carry out comparison, it is mentioned to each threshold value all configured in RRC information.

During being ranked up to obtain above-mentioned ranking results to measurement result, it is contemplated that for different measurement results Different deviants can be set, to be preferably applicable in different demands.For example, the CSI-RS of the transmission node measured needs Measurement result be ranked up can be as follows：

1) when the measurement result of the CSI-RS for the transmission node for needing to measure is more than the 9th predetermined threshold, the survey to CSI-RS It measures result and increases by the first deviant, be ranked up according to the measurement result of the CSI-RS after the first deviant of increase；Or

2) when the measurement result of the CSI-RS for the transmission node for needing to measure is less than the tenth predetermined threshold, the survey to CSI-RS It measures result and increases by the second deviant, be ranked up according to the measurement result of the CSI-RS after the second deviant of increase.

Preferably, can be that different transmission nodes configures different deviants, or different transmission node systems The identical deviant of one configuration.Above-mentioned deviant can be positive, can also be negative, do not limit herein.

Preferably, in order to reduce the number reported to economize on resources, the measurement result that ought only meet condition can be set Just triggering is measured and is reported when reaching regular hour length duration.In a preferred embodiment, in rrc layer message Also carry time span instruction information, wherein time span instruction information is used to indicate terminal in the measurement for determining CSI-RS As a result meet trigger condition duration be greater than or equal to time span instruction information in scheduled time span when, report survey Amount report.

During terminal is measured and reported, do not need to all report all transmission nodes, you can with The measurement result of a part of transmission node is selected to be reported on demand.In a preferred embodiment, in rrc layer message also It can carry full required for the measurement result in measurement report in the measurement result of the CSI-RS of the transmission node of required carrying The condition of foot, i.e., should carry the measurement result of which transmission node in measurement report, for example, measurement report carries but unlimited In the measurement result of the CSI-RS of the transmission node of at least one of：

The measurement result of CSI-RS in the transmission node measured is needed to be more than the transmission node of the tenth predetermined threshold；

The measurement result of CSI-RS in the transmission node measured is needed to be more than the 11st predetermined threshold, and pre- more than the 11st The duration for determining threshold value is greater than or equal to the transmission node of scheduled time threshold；Or

Q transmission nodes before needing the measurement result of CSI-RS in the transmission node measured to come, wherein Q are just whole Number；Preferably, the size of Q is configured in RRC information；

The measurement result of CSI-RS in the transmission node measured is needed to meet the transmission of this trigger condition measured of triggering Node.

Preferably, the CRS measurement results of serving cell can also be carried in measurement report.

In a preferred embodiment, L3 filtering parameters can also be carried in RRC information, wherein L3 filtering parameters It is used to indicate after terminal is filtered measurement result according to L3 filtering parameters and is reported to network side.

Preferably, after network side sends rrc layer message, the above method can also include：It is measured in terminal In the process, the lateral terminal of network sends the suspension information for stopping measuring, and can also send the abort message for stopping being reported.On The suspension information stated can carry out carrying or sending by RRC signaling by PDCCH physical channels, it is preferable that use RRC When signaling method carries out delete operation, the CSI-RS measurements that the mode for directly displaying and being deleted it deletes configuration may be used (that is, explicit way) can also delete the corresponding measurement of CSI-RS signal by way of deleting the CSI-RS signal of configuration (that is, implicit).

In a preferred embodiment, network side stops one of in the following manner in the transmission node measured needs One or more transmission nodes measurement：Network side sends the instruction letter for the measurement for stopping the one or more transmission node Breath；Or network side deletes the one or more transmission node.

The embodiment of the present invention additionally provides a kind of CSI-RS report methods, is described based on end side, as shown in figure 3, Include the following steps：

Step S302：Terminal receives the rrc layer message that network side is sent, wherein terminal needs are carried in rrc layer message The instruction information of the transmission node of measurement；

Step S304：Terminal-pair needs the transmission node measured to measure；

Step S306：Terminal is to network side reporting measurement reports, wherein the transmission of measurement in need is carried in measurement report The measurement result of the CSI-RS of one or more of node transmission node.

Preferably, in terminal to before network side reporting measurement reports, as shown in figure 4, the above method further includes following step Suddenly：

Step S402：Terminal judges whether the result measured meets the trigger condition carried in rrc layer message；

Step S404：If it is satisfied, then terminal is to network side reporting measurement reports.

It is identical in the condition that end side is triggered and the trigger condition that network side is configured, i.e., trigger condition includes But it is not limited at least one of：

9) row of the measurement result of the CSI-RS of specific one or multiple transmission nodes in the transmission node measured is needed Row sequence and it is last this specific one or multiple transmission nodes CSI-RS measurement result the difference that puts in order.

The specific descriptions of above-mentioned several trigger conditions are described above, details are not described herein.

If carrying the instruction information of time span in RRC information, after judging to meet trigger condition, terminal also needs Execute following steps：Terminal judges whether the time for meeting trigger condition is greater than or equal to preset time span；Such as Fruit is, then terminal reporting measurement reports.

Because fluctuated between measuring obtained result to different transmission nodes it is bigger, in order to obtain More smooth measurement result can carry out measurement result using the advantages of three-layer network in a preferred embodiment It is filtered.Specifically, can realize in the following way：Terminal is according to the L3 filtering parameters carried in RRC information to measuring As a result it is filtered；Terminal is using the measurement result after being filtered as measurement report.

During terminal measures, if receiving the suspension letter that the stopping that the lateral terminal of network is sent measures Breath, then terminal stopping are measured and are reported, and are only connected to terminal after the instruction message for continuing to measure of network side transmission It is further continued for measuring.Preferably, stop information to carry by PDCCH physical channels.

A kind of CSI-RS is additionally provided in the present embodiment and reports and obtain system, is located at end side and network side, The device had carried out repeating no more for explanation for realizing above-described embodiment and preferred embodiment.It is used as following , the combination of the software and/or hardware of predetermined function may be implemented in term " unit " or " module ".Although following embodiment institute The device of description preferably realized with software, but the realization of the combination of hardware or software and hardware be also may and quilt Conception.Fig. 5 is a kind of preferred structure block diagram that CSI-RS according to the ... of the embodiment of the present invention reported and obtained system, such as Fig. 5 institutes Show, including：Sending module 502, the first receiving module 504, the second receiving module 506, measurement module 508 and reporting module 510 below illustrate the structure.

Sending module 502, for sending rrc layer message, wherein carry terminal in the rrc layer message and need to measure Transmission node instruction information；

Second receiving module 506, couples with sending module 502, the rrc layer message for receiving network side transmission, wherein The instruction information that terminal needs the transmission node measured is carried in the rrc layer message；

Measurement module 508 is coupled with the second receiving module 506, for needing the transmission node measured to survey to described Amount；

Reporting module 510 is coupled with measurement module 508, is used for the network side reporting measurement reports, wherein described The measurement knot of one or more of the transmission node for needing the to measure CSI-RS of transmission node is carried in measurement report Fruit.

First receiving module 504, couples with reporting module 510, the measurement report reported for receiving the terminal, In, carry one or more of the transmission node for needing the to measure CSI-RS's of transmission node in the measurement report Measurement result；

Present embodiments provide it is a kind of by L3 signalings measure reporting status information of channel reference signal method, including with Lower step：

S1：Network side needs the transmission measured by wireless network control layer (RRC) message to user terminal (UE) configuration The trigger condition of nodal information and measurement report.

S1：User terminal (UE) measures according to the transmission node information of the configuration of network side and judges that measurement result is No satisfaction triggers measurement report trigger condition.If measurement result meets trigger condition, UE triggers measurement report.Measurement report In include the measurement results of one or more transmission nodes.

Above-mentioned rrc layer message can be that RRC reconfiguration messages (RRC Connection Reconfiguration) disappear Breath.

In step sl, transmission node information is channel state information reference signals (CSI-RS).Network side can pass through RRC information configures the CSI-RS information of one or more transmission nodes；Measurement result in step S2 is also that CSI-RS measures knot Fruit.

Preferably, can also be carried in the RRC information in step S1 for CSI-RS special L3 filtering parameters or The L3 filtering parameters that regulation UE is measured using other measurements are believed come the L3 filtering operations or regulation CSI-RS for carrying out CSI-RS signal Number without using L3 filter.

It can specify that all CSI-RS signal for measuring all configurations on a carrier wave or a load when configuration The specific CSI-RS signal in part on wave.

During terminal is reported, can according to sequence identical with the CSI-RS resource that RRC information configures into Row reports, so that network side can more easily recover specific measurement result.

Preferably, in step s 2, UE is when reporting CSI-RS measurement results, can be by for each CSI-RS A CSI-RS mark is carried to match CSI-RS measurement results with CSI-RS measuring signals.Wherein, CSI-RS is identified It can be configured by the RRC information in step S1.

A certain kind in following condition can be but not limited to for the trigger condition of above-mentioned measurement report or certain is several Combination：

1) measurement result of CSI-RS signal is above or below a certain thresholding；

2) measurement result of CSI-RS signal is changed above or below the number of the CSI-RS signal of a certain thresholding；

3) measurement result of CSI-RS signal above or below the CSI-RS signal of a certain thresholding number above or below A certain thresholding；

4) intensity of strongest CSI-RS signal is above or below a certain thresholding or the intensity of most weak CSI-RS signal Above or below a certain thresholding；

5) sequence in CSI-RS measuring signals between the strongest n of intensity and the information carried in the last measurement report Change (when n is the CSI-RS signal number of all configurations, n can be omitted) compared to having occurred；

6) the strongest n of CSI-RS measuring signals intensity have occurred variation (the composition generation of strongest n CSI-RS signal Variation, for example, there is CSI-RS signal to be become in order to which strongest n is one of a by non-strongest n.When n is 1, meaning is most strong CSI-RS signal changed)；

7) at least one CSI-RS measuring signals intensity and some or certain several specific CSI-RS measuring signals intensity it Between magnitude relationship changed, specific CSI-RS signal can be that network side configures, and can also be defaulted as CoMP Most strong, most weak or all CSI-RS signal in measurement set)；

8) average value of the measurement result of all CSI-RS signal configured is above or below a certain thresholding；

9) the CRS signal measurement results of adjacent area are above or below a certain thresholding；

10) CRS signal of the average value of all CSI-RS signal measurement results configured above or below best adjacent area Measurement result.

It is configured in the RRC information that the information such as above-mentioned thresholding, n can be in step sl.

Preferably, in step sl, network side can further time for being met of configuration event, that is, provide only even When measurement result in continuous certain time all meets trigger conditions, ability triggering terminal reporting measurement reports.

Network side can also be further configured in RRC information when measurement report is triggered, and taken in measurement report The content of the measurement result of band, such as can be, but not limited to be a certain kind in following condition or certain several combination：

1) CSI-RS signal intensity is more than the transmission node of a certain thresholding；

2) CSI-RS signal intensity is more than a certain thresholding and the transmission node that continues for some time；

3) the CSI-RS signal measurement intensity transmission node of ranking within n first in all CSI-RS signal.

Above-mentioned thresholding and ranking n etc. are configured in the RRC information of step S1.

Preferably, network side can also configure different deviants to different CSI-RS signal, and UE is carrying out CSI-RS It needs to be compared again after considering deviant when signal compares.Deviant can be uniformly configured to different events or be each Indie incident configures different deviants.

For example, when event is that some CSI-RS signal is compared with absolute thresholding, it can be for being more than absolute thresholding Event configuration deviant offset1, and for less than the event configuration difference of certain absolute thresholding and the deviant of offset1 offset2.In the case of configuring deviant, for CSI-RS be more than absolute thresholding the case where, only when CSI-RS measurement results It, just can trigger event when adding offset1 more than absolute thresholding；And for CSI-RS be less than absolute thresholding the case where, only when It, just can trigger event when CSI-RS measurement results subtract offset2 less than absolute thresholding.When using unified configuration, network side It only configures offset an offset, i.e. offset1 and offset2 and is all made of same value；When using separate configurations, network It side can be using separate configurations offset1 and offse2 as different value.

Preferably, after UE, which starts, to be measured, network side can notify UE to stop or open CSI-RS by physical layer signaling It measures, above-mentioned physical layer signaling can be, but not limited to be carried using PDCCH physical channels.

The method for measuring reporting status information of channel reference signal by L3 signalings by above-mentioned offer, network side can be with The channel state information reference signals measurement result of each transmission node measured needed for obtaining, and therefrom select actually make Transmission node, to improve efficiency when efficiency and CoMP transmission that eNB chooses transmission node.

Further the present invention is explained with reference to several specific embodiments, it will be appreciated that should Preferred embodiment is intended merely to preferably describe the present invention, does not constitute and improperly limits the present invention.

Embodiment one

It is to be become with working as the CSI-RS signal number that measurement result is more than T1 (scheduled threshold value) in the present embodiment It is illustrated for triggering measurement report when change, flow is as shown in Figure 6：

When configuring CoMP transmission, related procedure is as follows：

Step S602：ENB sends RRC reconfiguration messages to UE.

The multiple CSI-RS signal information in need for measuring and reporting are carried in above-mentioned message, while configuring CSI-RS letters The configuration of L3 filtering parameters and measurement report trigger event used by number, it is desirable that when measurement result is more than the CSI-RS letters of T1 When number number changes and stablizes a period of time (number is initialized as 0), UE needs to trigger measurement report, and in measurement report Only carry the measurement result that measurement result is more than the CSI-RS signal of T1.Meanwhile eNB believes n-th of CSI-RS in RRC information (i.e. for n-th of CSI-RS, the measurement result that Rule of judgment is CSI-RSn is plus deviant by number configuration deviant Offsetn It is more than thresholding T1 after Offsetn).

Step S604：UE judges whether to meet trigger condition after receiving the RRC reconfiguration messages from eNB；

Step S606：When meeting trigger condition, terminal sends measurement report.Can according to flow as shown in Figure 7 into Row processing.

Step S608：When network side judges to measure it is necessary to stop the CSI-RS of UE temporarily, the lateral UE of network is sent PDCCH physical layer signalings are ceased and desisted order (Deactivate) wherein carrying CSI-RS measurements.

Step S610：After UE receives this order, stop measurement and the measurement result assessment of CSI-RS signal.

Step S612：When network side judges to measure it is necessary to be again started up the CSI-RS of UE, the lateral UE of network is sent PDCCH physical layer signalings start order (Activate) wherein carrying CSI-RS and measuring.

Step S614：UE receives the measurement of restarting CSI-RS signal and the assessment of measurement result after this order.

For above-mentioned steps S606, flow as shown in Figure 7 may be used and handled, include the following steps：

Step S702：UE starts relevant measurement according to CSI-RS signal configuration information

Step S704：UE uses the L3 filtering parameters configured in RRC information to handle measurement result.

Step S706：UE judges whether to meet trigger condition.For example, can be when UE has found to measure in the present embodiment As a result it is more than that the CSI-RS signal number of T1 changes, UE triggers measurement report.

Step S708：In the case of judging to meet condition, measurement report, report measurement results are triggered.Preferably, it measures The measurement result that measurement result is more than the CSI-RS signal of T1 is only carried in report.Completion reports rear UE to transfer to be directed toward step S602 continues to detect CSI-RS signal.

In above-mentioned be filtered, it may be used and following be filtered formula：

F_n=(1-a) F_n-1+a·M_n

Wherein, Fn is the filtered measurement result for needing to export；Mn is the measurement result of the last time；Fn-1 is upper one Secondary filtered measurement result；A is according to the calculated filtering factor of L3 filtering parameters, and computational methods are a=1/2^(k/4), k The L3 filtering parameters of UE are allocated in RRC information for eNB.

Embodiment two

It is the sequence with the strongest n of CSI-RS measuring signal intensity between a and the last measurement report in the present embodiment The information carried in announcement is compared variation has occurred for illustrate, flow is identical as embodiment one.

Difference is that：The needs carried in RRC reconfiguration messages in the present embodiment, which measure, to be reported Multiple CSI-RS signal information, while configuring L3 filtering parameters and measurement report trigger event used by CSI-RS signal and matching It sets, it is desirable that the information phase for sorting with being carried in the last measurement report between the strongest n of CSI-RS measuring signal intensity is a Than variation (be initially ordered as network side configured in RRC information sequence) having occurred and new sequence is kept whithin a period of time When constant, UE needs to trigger measurement report, and the measurement result of n most preceding CSI-RS is only carried in measurement report.Meanwhile ENB (i.e. for n-th of CSI-RS, participates in sequence in RRC information to n-th of CSI-RS signal configuration deviant Offsetn The measurement result that measurement result is CSI-RSn is plus the result after deviant Offsetn).

When UE find sequence in the filtered measurement results of L3 between CSI-RS measuring signal intensity strongest n with recently The information carried in one-shot measurement report is compared to being changed, then UE triggers measurement report, and strongest n are carried in report The measurement result of CSI-RS.

Remaining and embodiment one are identical, and details are not described herein.

Embodiment three

It is to be illustrated so that CSI-RS measuring signal intensity strongest n have occurred variation as an example in the present embodiment , flow is identical as embodiment one.

Difference is that：The needs carried in RRC reconfiguration messages in the present embodiment, which measure, to be reported Multiple CSI-RS signal information, while configuring L3 filtering parameters and measurement report trigger event used by CSI-RS signal and matching It sets, it is desirable that when being changed and being remained unchanged whithin a period of time for CSI-RS measuring signal intensity strongest n (at one section Between length configured by network side), UE needs to trigger measurement report, and most preceding m CSI-RS is only carried in measurement report Measurement result.Meanwhile eNB configures deviant Offsetx (i.e. for x-th in RRC information to x-th of CSI-RS signal CSI-RS, the measurement result that the measurement result for participating in sequence is CSI-RSx is plus the result after deviant Offsetx).

When UE has found in the filtered measurement results of L3 that CSI-RS measuring signal intensity strongest n are changed and newly Sequence when remaining unchanged whithin a period of time, then UE triggers measurement report, and that carried in report is strongest m CSI-RS Measurement result.

Embodiment four

It is that a certain absolute thresholding is higher than with CSI-RS measuring signal intensity or is less than a certain absolute door in the present embodiment It is limited to what example illustrated, flow is identical as embodiment one.

Difference is that：The needs carried in RRC reconfiguration messages in the present embodiment, which measure, to be reported Multiple CSI-RS signal information, while configuring L3 filtering parameters and measurement report trigger event used by CSI-RS signal and matching Set, it is desirable that when any CSI-RS measuring signals intensity higher than a certain absolute thresholding (from less than being changed to above) or less than (from higher than Become less than) a certain absolute thresholding and after being persistently higher or lower than a period of time, UE needs to trigger measurement report, and measurement report In only carry the measurement result of most preceding n CSI-RS.Meanwhile eNB deviates n-th of CSI-RS signal configuration in RRC information (i.e. for n-th of CSI-RS, the measurement result that the measurement result for participating in sequence is CSI-RSn adds deviant to value Offsetn Result after Offsetn).Event configurations of the eNB for CSI-RS measurement results higher than absolute thresholding deviates Offset1, that is, works as When CSI-RS measurement results are higher than absolute thresholding+offset1, UE can just trigger measurement；ENB is less than CSI-RS measurement results The event configuration of absolute thresholding deviates Offset2, i.e., when CSI-RS measurement results are less than absolute thresholding-offset1, UE just meetings Triggering measures；When UE judgements meet trigger conditions, UE triggers measurement report, and what is carried in report is strongest n The measurement result of CSI-RS.

In another embodiment, a kind of software is additionally provided, the software is for executing above-described embodiment and preferred reality Apply the technical solution described in mode.

In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored in the storage medium, it should Storage medium includes but not limited to：CD, floppy disk, hard disk, scratch pad memory etc..

It can be seen from the above description that the present invention realizes following technique effect：

The instruction information measured to transmission node by rrc layer message, terminal is in response to the rrc layer information reporting The measurement result of CSI-RS solves terminal in the prior art and is difficult to carry in feedback information by physical layer control channel and owns Network side is difficult to know the signal quality of all transmission nodes caused by the channel state information reference signals of transmission node Technical problem so that network side can obtain the measurement result of the CSI-RS of all transmission nodes, dynamic to improve network side The efficiency of transmission of the accuracy and CoMP of state scheduling.

Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of channel state information reference signals CSI-RS acquisition methods, which is characterized in that including：

Network side sends rrc layer message, wherein the finger that terminal needs the transmission node measured is carried in the rrc layer message Show information；

The network side receives the measurement report that the terminal reports, wherein is carried in the measurement report and described needs to survey The measurement result of the CSI-RS of one or more of transmission node of amount transmission node；

Wherein, it is also carried in the rrc layer message and triggers the trigger condition that the terminal reports the measurement report；

Wherein, the trigger condition includes at least one of：One or more of described transmission node for needing to measure passes The measurement result of the corresponding CSI-RS of defeated node becomes smaller than first predetermined threshold by being not less than the first predetermined threshold；It is described Need the measurement result of the corresponding CSI-RS of one or more of the transmission node measured transmission node pre- by being not more than second Determine threshold value and becomes greater than second predetermined threshold；It is described that the measurement result of CSI-RS in the transmission node that measures is needed to be more than the It is more than the transmission node of the third predetermined threshold in the number of the transmission node of three predetermined thresholds and last measurement result Number is compared and is changed；The measurement result of CSI-RS is less than the biography of the 4th predetermined threshold in the transmission node for needing to measure The number of defeated node becomes compared with being less than the number of transmission node of the 4th predetermined threshold in last measurement result Change；The measurement result of the CSI-RS of the transmission node of measurement in need average value be more than the 5th predetermined threshold；Institute is in need The average value of the measurement result of the CSI-RS of the transmission node of measurement is less than the 6th predetermined threshold；The transmission section for needing to measure More than the measurement knot of the composition and last time CSI-RS of the transmission node of the 7th predetermined threshold in the measurement result of CSI-RS in point It is different more than the composition of the transmission node of the 7th predetermined threshold in fruit；CSI-RS in the transmission node for needing to measure Putting in order for transmission node in measurement result more than the 8th predetermined threshold is more than with the measurement result of last time CSI-RS The difference that puts in order of the transmission node of 8th predetermined threshold；Specific one in the transmission node for needing to measure is multiple The measurement result of the CSI-RS of transmission node put in order with it is last this specific one or multiple transmission nodes CSI- The difference that puts in order of the measurement result of RS；Strongest N in the measurement result of CSI-RS in the transmission node for needing to measure The composition of a measurement result is different from the strongest composition of N number of measurement result in last measurement result, wherein N is positive integer； It is described to need in the transmission node that measures putting in order and the last time for strongest M transmission node in the measurement result of CSI-RS The difference that puts in order of strongest M transmission node in the measurement result of CSI-RS, wherein M is positive integer.

2. according to the method described in claim 1, it is characterized in that, the rrc layer message is RRC reconfiguration messages.

3. according to the method described in claim 1, it is characterized in that, the M and N by the network side in the RRC information Carry out configuration and/or the value of make an appointment the in a standard M and N.

4. method according to claim 1 or 3, which is characterized in that the measurement result of the CSI-RS is to the transmission The result that node obtains after measuring adds the result after scheduled deviant.

5. according to the method described in claim 4, it is characterized in that, identical for the transmission node configuration that each needs measure Or the different deviant.

6. according to the method described in claim 1, it is characterized in that, the 5th predetermined threshold be best adjacent area CSI-RS or The measurement result of CRS.

7. according to the method described in claim 1, it is characterized in that, the last time measurement result is that the terminal is the last It is reported to the measurement result of the network side.

8. the method according to any one of claim 2 to 3 or claim 5 to 7, which is characterized in that the rrc layer disappears Time span instruction information is also carried in breath, wherein the time span instruction information is used to indicate the terminal in determination The duration that the measurement result of CSI-RS meets the trigger condition is greater than or equal in time span instruction information in advance When fixed time span, the measurement report is reported.

9. according to the method described in claim 4, which is characterized in that also carry time span in the rrc layer message and refer to Show information, wherein the time span instruction information is used to indicate the terminal and meets institute in the measurement result for determining CSI-RS When stating duration of trigger condition and being greater than or equal to scheduled time span in time span instruction information, report described Measurement report.

10. the method according to any one of claim 2 to 3 or claim 5 to 7, which is characterized in that the measurement report Accuse the measurement result of the CSI-RS for the transmission node for carrying at least one of：

The measurement result of CSI-RS is more than the transmission node of the tenth predetermined threshold in the transmission node for needing to measure；

The measurement result of CSI-RS is more than the 11st predetermined threshold in the transmission node for needing to measure, and is more than the described tenth The duration of one predetermined threshold is greater than or equal to the transmission node of scheduled time threshold；

It is described that the measurement result of CSI-RS in the transmission node measured is needed to come preceding Q transmission nodes, wherein Q is just whole Number；

The measurement result of CSI-RS meets the transmission of this trigger condition measured of triggering in the transmission node for needing to measure Node.

11. according to the method described in claim 4, which is characterized in that the measurement report carries at least one of The measurement result of the CSI-RS of transmission node：

12. according to the method described in claim 1, it is characterized in that, also carrying the CRS of serving cell in the measurement report Measurement result.

13. according to the method described in claim 1, it is characterized in that, also carry L3 filtering parameters in the RRC information, In, the L3 filtering parameters are used to indicate the terminal and are filtered to the measurement result according to the L3 filtering parameters After be reported to the network side.

14. according to the method described in claim 1, it is characterized in that, network side send rrc layer message after, the method Further include：

During the terminal measures, laterally the terminal transmission stops reporting the measurement report network First abort message and/or the second abort message for stopping measurement.

15. according to the method for claim 14, which is characterized in that first abort message passes through PDCCH physical channels And/or RRC signaling carrying, second abort message are carried by PDCCH physical channels and/or RRC signaling.

16. according to the method described in claim 1, it is characterized in that, the network side stops to institute one of in the following manner State the measurement of one or more of the transmission node for needing to measure transmission node：

The network side sends the instruction information for the measurement for stopping the one or more transmission node；Or

The network side deletes the one or more transmission node.

17. a kind of channel state information reference signals CSI-RS report methods, which is characterized in that including：

Terminal receives the rrc layer message that network side is sent, wherein carries terminal in the rrc layer message and needs the biography measured The instruction information of defeated node；

The transmission node measured is needed to measure described in the terminal-pair；

The terminal is to the network side reporting measurement reports, wherein is carried in the measurement report and described needs to measure The measurement result of the CSI-RS of one or more of transmission node transmission node；

Wherein, in the terminal to before the network side reporting measurement reports, the method further includes：The terminal judges to survey Whether the result of amount meets the trigger condition carried in the rrc layer message；If it is satisfied, then the terminal is to the network side Reporting measurement reports；

18. according to the method for claim 17, which is characterized in that judge described in the result measured satisfaction in the terminal After the trigger condition carried in rrc layer message, the method further includes：

The terminal judges whether the time for meeting the trigger condition is greater than or equal to preset time span；

If it is, the terminal reports the measurement report.

19. according to the method for claim 17, which is characterized in that in the terminal to the network side reporting measurement reports Before, the method further includes：

The terminal is filtered measurement result according to the L3 filtering parameters carried in the RRC information；

The terminal is using the measurement result after being filtered as the measurement report.

20. a kind of channel state information reference signals CSI-RS acquisition device is located at network side, which is characterized in that including：

Sending module, for sending rrc layer message, wherein carry terminal in the rrc layer message and need the transmission section measured The instruction information of point；

Receiving module, the measurement report reported for receiving the terminal, wherein the needs are carried in the measurement report The measurement result of the CSI-RS of one or more of transmission node of measurement transmission node；

21. a kind of channel state information reference signals CSI-RS reporting devices are located in terminal, which is characterized in that including：

Receiving module, the rrc layer message for receiving network side transmission, wherein carry terminal needs in the rrc layer message The instruction information of the transmission node of measurement；

Measurement module, for needing the transmission node measured to measure to described；

Reporting module, for the network side reporting measurement reports, wherein carried in the measurement report and described need to survey The measurement result of the CSI-RS of one or more of transmission node of amount transmission node；

Wherein, the reporting module includes：Judging unit is taken for judging whether measurement result meets in the rrc layer message The triggering terminal of band reports the trigger condition of the measurement report；Reporting unit, for meeting the triggering item in determination The measurement report is reported when part；