CN103546207A

CN103546207A - Channel State Indication-Reference Signal (CSI-RS) acquisition and reporting method and device

Info

Publication number: CN103546207A
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: 2014-01-29
Anticipated expiration: 2032-07-09
Also published as: CN103546207B

Abstract

The invention discloses a Channel State Indication-Reference Signal (CSI-RS) acquisition and reporting method and device. The CSI-RS acquisition method includes that the network side transmits Radio Resource Control (RRC) layer messages, wherein the RRC layer messages include indication information of transmission points needed to be measured by a terminal; the network side receives a measurement report reported by the terminal, wherein the measurement report includes measurement results of CSI-RSs of one or more than one transmission points in the transmission points needed to be measured. The CSI-RS acquisition and reporting method and device solve the technical problem in the prior art that the network side is difficult to know the signal quality of all the transmission points due to the fact that the terminal is difficult to carry channel state information reference signals in feedback information through physical layer control channels, the network side can acquire the measurement results of the CSI-RSs of the transmission points, and accordingly the dynamic scheduling accuracy of the network side and the transmission efficiency of the CoMP (Coordinated Multi Point) are improved.

Description

CSI-RS obtains, CSI-RS report method and device

Technical field

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

Background technology

For miscellaneous service contents such as voice, grouped data and broadcast is provided to user, cordless communication network is by widespread deployment, in order to meet the demand of the growing communication quality of user and traffic rate, constantly evolution development of wireless communication technology (wireless network).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, referred to as GPRS) 2nd generation/2.5th third generation mobile communication network evolves to universal mobile telecommunications system (Universal Mobile Telecommunications System, referred to as UMTS) the 3rd third generation mobile communication network.Yet, in order to improve better frequency spectrum service efficiency, the wireless communication needs rapidly increasing to meet user, third generation partner program (The 3rd Generation Partnership Project, referred to as 3GPP) tissue proposed again the 4th third-generation mobile communication technology " Long Term Evolution " (Long Term Evolution on the basis of UMTS, referred to as LTE) and the further technology " senior Long Term Evolution " (Long TermEvolution Advance, referred to as LTE-A) of evolution.

Cordless communication network can be supported multiple access by shared system resource conventionally, in addition the mobility of cordless communication network support terminal equipment (User Equipment, referred to as UE).In view of above-mentioned consideration, in order to effectively utilize system resource, for user, provide the service communication of high-quality simultaneously, cordless communication network need to carry out effective resource management.Take LTE system as example, evolved base station (enhanced NodeB, referred to as eNB) based on eNB to the measurement of uplink reference signals or the measurement to downlink reference signal based on UE, can obtain quality of wireless channel, and consider the management that other factors are carried out Radio Resource.For example, consider quality of wireless channel, service distribution, adjacent area load, hardware resource and operator's policy etc. and connect mobility control (Connection Mobility Control, referred to as CMC); Consider quality of wireless channel and resource service condition and carry out scheduling of resource (Resource Scheduling, referred to as RS); Consider quality of wireless channel, business load carries out interference coordination (Inter-cell Interference Coordination, referred to as ICIC) etc.Wherein, UE to downlink reference signal measurement refer to that UE measures the reference signal (Cell-specific reference signals, referred to as CRS) of cell-specific and by measurement feedback to eNB.Meanwhile, consider the fluctuation that physical layer is measured, in standard, at high level, introduced L3 filtering at present, utilize historical measurement result to carry out the result of current measurement certain level and smooth.

In order to meet the performance index of LTE-A, 3GPP has introduced CoMP(Coordinated Multi Point, referred to as CoMP) transmission technology, the principle of CoMP technology is to utilize a plurality of eNB separated on geographical position, or claim a plurality of transmission nodes (Transmission Point, referred to as TP) to participate in and the transfer of data of same UE simultaneously.Use CoMP technology can effectively improve the user performance of cell edge, effectively suppress presence of intercell interference; Meanwhile, can also increase the covering of high data rate, thereby improve the throughput of cell edge, further improve throughput of system.

When using CoMP technology, the signal quality that simultaneously participates in the transmission node of transmission in order to weigh these, 3GPP has introduced channel state information reference signals (Channel-State Information reference Signal, referred to as CSI-RS).UE, when transfer of data, can feed back to network side by the channel state information reference signals that participates in the transmission node of transmission in the feedback information of transfer of data, and network side carries out dynamic dispatching by this information of use.As shown in Figure 1, in CoMP use scenes, the number of transmission node that can participate in transmission is often greater than the number of the transmission node that UE uses simultaneously, network side need to be selected the transmission node transmitting for simultaneously from numerous transmission nodes, therefore network side need to be known the signal quality of all transmission nodes, obtains the channel state information reference signals that all transmission nodes are corresponding.Consider the restriction of the physical control channel bearing capacity of physical layer, UE is difficult to carry at feedback information by physical layer control channel the channel state information reference signals of all transmission nodes.

For above-mentioned problem, effective solution is not yet proposed at present.

Summary of the invention

The invention provides a kind of CSI-RS acquisition methods and device, CSI-RS report method and device, at least to solve terminal in prior art, be difficult at feedback information, carry the technical problem that network side that the channel state information reference signals of all transmission nodes causes is difficult to know the signal quality of all transmission nodes by physical layer control channel.

According to an aspect of the present invention, provide a kind of channel state information reference signals CSI-RS acquisition methods, having comprised: network side has sent rrc layer message, wherein, in rrc layer message, carried the indication information of the transmission node that terminal need to measure; The measurement report that network side receiving terminal reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the transmission node that needs to measure in measurement report.

Preferably, rrc layer message is RRC reconfiguration message.

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

Preferably, trigger condition comprise following one of at least: the measurement result of the CSI-RS that one or more transmission nodes in the transmission node that needs are measured are corresponding becomes and is less than the first predetermined threshold from being not less than the first predetermined threshold; The measurement result of the CSI-RS that one or more transmission nodes in the transmission node of need measuring are corresponding becomes and is greater than the second predetermined threshold from being not more than the second predetermined threshold; The number that in the transmission node of need measuring, the measurement result of CSI-RS is greater than the transmission node of the 3rd predetermined threshold is compared and is changed with the number that is greater than the transmission node of the 3rd predetermined threshold in last measurement result; The number that in the transmission node of need measuring, the measurement result of CSI-RS is less than the transmission node of the 4th predetermined threshold is compared and is changed with the number that is less than the transmission node of the 4th predetermined threshold in last measurement result; The mean value of the measurement result of the CSI-RS of all transmission nodes that need to measure is greater than the 5th predetermined threshold; The mean value of the measurement result of the CSI-RS of all transmission nodes that need to measure is less than the 6th predetermined threshold; The formation that is greater than the transmission node that is greater than the 7th predetermined threshold in the formation of transmission node of the 7th predetermined threshold and the measurement result of last CSI-RS in the transmission node of need measuring in the measurement result of CSI-RS is different; In the transmission node of need measuring, in the measurement result of CSI-RS, be greater than in the measurement result putting in order from last CSI-RS of transmission node of the 8th predetermined threshold, be greater than the 8th predetermined threshold transmission node put in order different; In the transmission node of need measuring the measurement result of the CSI-RS of specific one or more transmission nodes put in order different from putting in order of the measurement result of the CSI-RS of last these specific one or more transmission nodes; In the transmission node of need measuring, in the measurement result of CSI-RS, the formation of N the strongest measurement result is different from the formation of N measurement result the strongest in last measurement result, and wherein, N is positive integer; In the transmission node of need measuring in the measurement result of CSI-RS in the measurement result putting in order from last CSI-RS of the strongest M transmission node the strongest M transmission node put in order differently, wherein, M is positive integer.

Preferably, M and N are configured in RRC message by network side and/or the value of make an appointment in standard M and N.

Preferably, the measurement result of CSI-RS is that the result obtaining after transmission node is measured adds the result after predetermined deviant.

Preferably, for each transmission node that need to measure configures identical or different deviant.

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

Preferably, last measurement result is the measurement result that terminal the last time reports network side.

Preferably, in rrc layer message, also carry time span indication information, wherein, time span indication information be used to indicate duration that terminal meets trigger condition in the measurement result of determining CSI-RS be more than or equal to time span indication information in predetermined time during length, reporting measurement reports.

Preferably, measurement report carries the measurement result of the CSI-RS of following transmission node one of at least: in the transmission node that needs to measure, the measurement result of CSI-RS is greater than the transmission node of the tenth predetermined threshold; In the transmission node of need measuring, the measurement result of CSI-RS is greater than the 11 predetermined threshold, and the duration that is greater than the 11 predetermined threshold is more than or equal to the transmission node of predetermined time threshold value; In the transmission node that needs to measure, the measurement result of CSI-RS comes the transmission node of front Q position, and wherein, Q is positive integer; In the transmission node that needs to measure, the measurement result of CSI-RS meets the transmission node of the trigger condition that triggers this measurement.

Preferably, in measurement report, also carry the CRS measurement result of Serving cell.

Preferably, also carry L3 filtering parameter in RRC message, wherein, L3 filtering parameter is used to indicate terminal to carry out reporting network side after filtering processing to measurement result according to L3 filtering parameter.

Preferably, after network side sends rrc layer message, said method also comprises: in the process of measuring in terminal, network side sends the second abort message that stops the first abort message of reporting measurement reports and/or stop measuring to terminal.

Preferably, the first abort message is by PDCCH physical channel and/or RRC signaling bear, and the second abort message is by PDCCH physical channel and/or RRC signaling bear.

The measurement of the one or more transmission nodes in the transmission node that preferably, network side ends one of in the following manner needs to measure: network side sends the indication information of the measurement of ending these one or more transmission nodes; Or network side is deleted this one or more transmission nodes.

According to another aspect of the present invention, a kind of channel state information reference signals CSI-RS report method is provided, comprise: terminal receives the rrc layer message that network side sends, wherein, in rrc layer message, carry the indication information of the transmission node that terminal need to measure; The transmission node that terminal is measured needs is measured; Terminal, to network side reporting measurement reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the transmission node that needs to measure in measurement report.

Preferably, in terminal, to before network side reporting measurement reports, said method also comprises: whether the result that terminal judges is measured meets the trigger condition of carrying in rrc layer message; If met, terminal is to network side reporting measurement reports.

Preferably, after the trigger condition that the result of measuring in terminal judges is carried in meeting rrc layer message, said method also comprises: whether the time that terminal judges meets trigger condition is more than or equal to predefined time span; If so, terminal to report measurement report.

Preferably, in terminal, to before network side reporting measurement reports, said method also comprises: terminal is carried out filtering processing according to the L3 filtering parameter carrying in RRC message to measurement result; Terminal will be carried out measurement result after filtering processing as measurement report.

According to a further aspect of the invention, provide a kind of channel state information reference signals CSI-RS acquisition device, be positioned at network side, comprise: sending module, be used for sending rrc layer message, wherein, in rrc layer message, carry the indication information of the transmission node that terminal need to measure; Receiver module, the measurement report reporting for receiving terminal, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the transmission node that needs to measure in measurement report.

According to a further aspect of the invention, a kind of channel state information reference signals CSI-RS reporting device is provided, be arranged in terminal, comprise: receiver module, the rrc layer message sending for receiving network side, wherein, in rrc layer message, carry the indication information of the transmission node that terminal need to measure; Measurement module, measures for the transmission node that needs are measured; Reporting module, for to network side reporting measurement reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the transmission node that needs to measure in measurement report.

Preferably, reporting module comprises: judging unit, for judging whether measurement result meets the trigger condition of the triggering terminal reporting measurement reports that rrc layer message carries; Report unit, for determining reporting measurement reports while meeting trigger condition.

In the present invention, the indication information of transmission node being measured by rrc layer message, terminal response is in the measurement result of the CSI-RS of this rrc layer information reporting, having solved terminal in prior art is difficult at feedback information, carry the technical problem that network side that the channel state information reference signals of all transmission nodes causes is difficult to know the signal quality of all transmission nodes by physical layer control channel, make network side can obtain the measurement result of the CSI-RS of all transmission nodes, thereby improved the accuracy of network side dynamic dispatching and the efficiency of transmission of CoMP.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the CoMP deployment scenario schematic diagram according to correlation technique;

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

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

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

Fig. 5 reports and obtains a kind of preferred structure block diagram of system according to the CSI-RS of the embodiment of the present invention;

Fig. 6 is the flow chart reporting according to the Event triggered CSI-RS of the embodiment of the present invention;

Fig. 7 is the flow chart of the UE inter-process that reports according to the Event triggered CSI-RS of the embodiment of the present invention.

Embodiment

Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.

The invention provides a kind of preferred CSI-RS acquisition methods, as shown in Figure 2, comprise the following steps:

Step S202: network side sends rrc layer message, wherein, carries the indication information of the transmission node that terminal need to measure in rrc layer message;

Step S204: the measurement report that network side receiving terminal reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the transmission node that needs to measure in measurement report.

In above-mentioned preferred implementation, the indication information of transmission node being measured by rrc layer message, terminal response is in the measurement result of the CSI-RS of this rrc layer information reporting, having solved terminal in prior art is difficult at feedback information, carry the technical problem that network side that the channel state information reference signals of all transmission nodes causes is difficult to know the signal quality of all transmission nodes by physical layer control channel, make network side can obtain the measurement result of the CSI-RS of all transmission nodes, thereby the accuracy of network side dynamic dispatching and the efficiency of transmission of CoMP have been improved.

In a preferred implementation, above-mentioned rrc layer message can be RRC reconfiguration message, and RRC reconfiguration message, just as a kind of preferred mode, can also adopt other L3 signaling to transmit, and at this, does not limit.

Can preset the trigger condition that a measurement reports, that is, only have when measurement result meets the trigger condition of this setting, terminal is just to network side reporting measurement result.The trigger condition that provides several exemplary is below described, but the invention is not restricted to this:

1) measurement result of the CSI-RS that one or more transmission nodes in the transmission node of need measuring are corresponding becomes and is less than the first predetermined threshold from being not less than the first predetermined threshold;

2) measurement result of the CSI-RS that one or more transmission nodes in the transmission node of need measuring are corresponding becomes and is greater than the second predetermined threshold from being not more than the second predetermined threshold;

For above-mentioned 1) with 2) be exactly in measurement result, to have one or more measurement results to compare magnitude relationship with predetermined threshold value variation has occurred, from large to small or change from small to big.

3) number that in the transmission node of need measuring, the measurement result of CSI-RS is greater than the transmission node of the 3rd predetermined threshold is compared and is changed with the number that is greater than the transmission node of the 3rd predetermined threshold in last measurement result;

4) number that in the transmission node of need measuring, the measurement result of CSI-RS is less than the transmission node of the 4th predetermined threshold is compared and is changed with the number that is less than the transmission node of the 4th predetermined threshold in last measurement result;

For above-mentioned 3) and 4) be exactly in all measured transmission nodes, there is variation in the number that measurement result is greater than a predetermined value or is less than the transmission node of a predetermined value, for example, last surpass 10 have 5, and this surpass 10 have 7.

5) mean value of the measurement result of the CSI-RS of all transmission nodes that need to measure is greater than the 5th predetermined threshold;

6) mean value of the measurement result of the CSI-RS of all transmission nodes that need to measure is less than the 6th predetermined threshold.

Above-mentioned 5) and 6) in be mainly the triggering judgement that the mean value of all measured transmission nodes is carried out.Preferably, the 5th predetermined threshold can be chosen the measurement result of the CSI-RS of best adjacent area.

7) formation that is greater than the transmission node that is greater than the 7th predetermined threshold in the formation of transmission node of the 7th predetermined threshold and the measurement result of last CSI-RS in the transmission node of need measuring in the measurement result of CSI-RS is different;

For example, preset a threshold value, upper, once in measurement, there is the measurement result of several transmission nodes to be greater than this threshold value, and in this measurement result, there is again the measurement result of other transmission node to be greater than this threshold value, that is, above-mentioned formation refers to is exactly that the measurement result of which transmission node has been greater than predetermined threshold value.

8) in the transmission node of need measuring, in the measurement result of CSI-RS, be greater than in the measurement result putting in order from last CSI-RS of transmission node of the 8th predetermined threshold, be greater than the 8th predetermined threshold transmission node put in order different;

That is,, in this measurement, the putting in order of measurement result that is greater than the transmission node of setting threshold compared variation occurred with last time.

9) in the transmission node of need measuring the measurement result of the CSI-RS of specific one or more transmission nodes put in order different from putting in order of the measurement result of the CSI-RS of last these specific one or more transmission nodes.That is, selected or set several special transmission nodes, if just the putting in order to have occurred to change to trigger to measure and report of the measurement result of these transmission nodes.

10) in the transmission node of need measuring, in the measurement result of CSI-RS, the formation of N the strongest measurement result is different from the formation of N measurement result the strongest in last measurement result, and wherein, N is positive integer;

11) in the transmission node of need measuring in the measurement result of CSI-RS in the measurement result putting in order from last CSI-RS of the strongest M transmission node the strongest M transmission node put in order differently, wherein, M is positive integer.

Above-mentioned M and N can be configured by network side, also can be stipulated by agreement.When N or M are 1, implication is exactly that change has occurred for the measurement result of the strongest transmission node.

In above-mentioned each preferred implementation, last measurement result is exactly the measurement result reporting to network side terminal the last time.

For the trigger condition in above-mentioned multiple situation, can be the comparison of carrying out with the threshold value of setting again after adding predetermined deviant, mentioned to each threshold value all in RRC message, be configured.

Being sorted, measurement result obtains, in the process of above-mentioned ranking results, considering for different measurement results and can setting different deviants, with applicable different demand better.The measurement result of the CSI-RS of the transmission node of for example, needs being measured sorts can be as follows:

1) measurement result of the CSI-RS of the transmission node of measuring when needs is greater than the 9th predetermined threshold, and the measurement result of CSI-RS is increased to the first deviant, according to the measurement result that increases the CSI-RS after the first deviant, sorts; Or

2) measurement result of the CSI-RS of the transmission node of measuring when needs is less than the tenth predetermined threshold, and the measurement result of CSI-RS is increased to the second deviant, according to the measurement result that increases the CSI-RS after the second deviant, sorts.

Preferably, can configure for different transmission nodes different deviants, can be also the identical deviant of the unified configuration of different transmission nodes.Above-mentioned deviant can be positive, also can bear, and at this, does not limit.

Preferably, in order to reduce the number of times that reports to economize on resources, just can set to only have when the duration of the measurement result satisfying condition, reach the regular hour and trigger to measure during length and report.In a preferred implementation, in rrc layer message, also carry time span indication information, wherein, time span indication information be used to indicate duration that terminal meets trigger condition in the measurement result of determining CSI-RS be more than or equal to time span indication information in predetermined time during length, reporting measurement reports.

In the process reporting in terminal measurement, do not need all transmission nodes all to report, can ask as required and select the measurement result of a part of transmission node to report.In a preferred implementation, in rrc layer message, can also carry the required satisfied condition of measurement result in the measurement result of the CSI-RS of the required transmission node carrying in measurement report, be should carry the measurement result of which transmission node in measurement report, for example, measurement report carries but is not limited to the measurement result of the CSI-RS of following transmission node one of at least:

In the transmission node that needs to measure, the measurement result of CSI-RS is greater than the transmission node of the tenth predetermined threshold;

In the transmission node of need measuring, the measurement result of CSI-RS is greater than the 11 predetermined threshold, and the duration that is greater than the 11 predetermined threshold is more than or equal to the transmission node of predetermined time threshold value; Or

In the transmission node that needs to measure, the measurement result of CSI-RS comes the transmission node of front Q position, and wherein Q is positive integer; Preferably, in RRC message, configure the size of Q;

In the transmission node that needs to measure, the measurement result of CSI-RS meets the transmission node of the trigger condition that triggers this measurement.

Preferably, in measurement report, can also carry the CRS measurement result of Serving cell.

In a preferred implementation, in RRC message, can also carry L3 filtering parameter, wherein, L3 filtering parameter is used to indicate terminal to carry out reporting network side after filtering processing to measurement result according to L3 filtering parameter.

Preferably, after network side sends rrc layer message, said method can also comprise: in the process of measuring in terminal, network side sends the termination information that stops measurement to terminal, also can send the abort message that stops reporting.Above-mentioned termination information can be carried or be sent by RRC signaling by PDCCH physical channel, preferably, when using RRC signaling method to carry out deletion action, (the CSI-RS that the mode that can adopt direct demonstration to delete it is deleted configuration measures, explicit way), the mode of the CSI-RS signal that also can configure by deletion is deleted the measurement that CSI-RS signal is corresponding (that is, implicit).

In a preferred implementation, the measurement of the one or more transmission nodes in the transmission node that network side ends one of in the following manner needs to measure: network side sends the indication information of the measurement of ending these one or more transmission nodes; Or network side is deleted this one or more transmission nodes.

The embodiment of the present invention also provides a kind of CSI-RS report method, based on end side, is described, and as shown in Figure 3, comprises the following steps:

Step S302: terminal receives the rrc layer message that network side sends, wherein, carries the indication information of the transmission node that terminal need to measure in rrc layer message;

Step S304: the transmission node that terminal is measured needs is measured;

Step S306: terminal, to network side reporting measurement reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the transmission node that needs to measure in measurement report.

Preferably, in terminal, to before network side reporting measurement reports, as shown in Figure 4, said method is further comprising the steps of:

Step S402: whether the result that terminal judges is measured meets the trigger condition of carrying in rrc layer message;

Step S404: if met, terminal is to network side reporting measurement reports.

The trigger condition that the condition triggering in end side configures with network side is identical, trigger condition include but not limited to following one of at least:

9) in the transmission node of need measuring the measurement result of the CSI-RS of specific one or more transmission nodes put in order different from putting in order of the measurement result of the CSI-RS of last these specific one or more transmission nodes.

Specific descriptions to above-mentioned several trigger conditions are described above, do not repeat them here.

If carry the indication information of time span in RRC message,, after judgement meets trigger condition, terminal also needs to carry out following steps: whether the time that terminal judges meets trigger condition is more than or equal to predefined time span; If so, terminal to report measurement report.

Because fluctuation ratio is larger different transmission nodes being measured between resulting result, in order to obtain comparatively level and smooth measurement result, in a preferred implementation, can utilize the advantage of three-layer network to carry out filtering processing to measurement result.Concrete, can realize in such a way: terminal is carried out filtering processing according to the L3 filtering parameter carrying in RRC message to measurement result; Terminal will be carried out measurement result after filtering processing as measurement report.

In the process of measuring in terminal, if the termination information that stopping of receiving that network side sends to terminal measured, terminal stops measuring and reporting, only receive the Indication message of proceeding to measure that network side sends after terminal proceed again to measure.Preferably, end information exchange and cross the carrying of PDCCH physical channel.

Also provide in the present embodiment a kind of CSI-RS to report and obtain system, laid respectively at end side and network side, this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation.As used below, term " unit " or " module " can realize the combination of software and/or the hardware of predetermined function.Although the described device of following examples is preferably realized with software, hardware, or the realization of the combination of software and hardware also may and be conceived.Fig. 5 reports and obtains a kind of preferred structure block diagram of system according to the CSI-RS of the embodiment of the present invention, as shown in Figure 5, comprising: sending module 502, the first receiver module 504, the second receiver module 506, measurement module 508, and reporting module 510 describes this structure below.

Sending module 502, for sending rrc layer message, wherein, carries the indication information of the transmission node that terminal need to measure in described rrc layer message;

The second receiver module 506, with sending module 502 coupling, the rrc layer message sending for receiving network side, wherein, carries the indication information of the transmission node that terminal need to measure in described rrc layer message;

Measurement module 508, with the second receiver module 506 couplings, for the described transmission node of measuring that needs is measured;

Reporting module 510, with measurement module 508 couplings, for to described network side reporting measurement reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the described transmission node that needs to measure in described measurement report.

The first receiver module 504, with reporting module 510 couplings, for receiving the measurement report of described terminal to report, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the described transmission node that needs to measure in described measurement report;

The present embodiment provides a kind of method of measuring reporting status information of channel reference signal by L3 signaling, comprises the following steps:

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

S1: user terminal (UE) is measured according to the transmission node information of the configuration of network side and judged whether measurement result meets triggering measurement report trigger condition.If measurement result meets trigger condition, UE triggers measurement report.The measurement result that comprises one or more transmission nodes in measurement report.

Above-mentioned rrc layer message can be RRC reconfiguration message (RRC Connection Reconfiguration) message.

In step S1, transmission node information is channel state information reference signals (CSI-RS).Network side can pass through the CSI-RS information of one or more transmission nodes of RRC message arrangement; Measurement result in step S2 is also CSI-RS measurement result.

Preferably, in the RRC message in step S1, can also carry for the special-purpose L3 filtering parameter of CSI-RS or regulation UE and not use L3 filtering with L3 filtering operation or regulation CSI-RS signal that the L3 filtering parameter of other measuring amount carries out CSI-RS signal.

All CSI-RS signals of all configurations on can carrier wave of specifying measurement in configuration or the specific CSI-RS signal of part on a carrier wave.

In the process reporting in terminal, can report according to the identical order of CSI-RS resource with RRC message arrangement, thereby make network side can more easily recover concrete measurement result.

Preferably, in step S2, UE, when reporting CSI-RS measurement result, can identify CSI-RS measurement result is mated with CSI-RS measuring-signal by carry a CSI-RS for each CSI-RS.Wherein, CSI-RS sign can the RRC message in step S1 be configured.

For the trigger condition of above-mentioned measurement report, can be but be not limited to a certain in following condition, or certain several combination:

1) measurement result of CSI-RS signal surpasses or lower than a certain thresholding;

2) measurement result of CSI-RS signal surpasses or lower than the number of the CSI-RS signal of a certain thresholding, variation has occurred;

3) measurement result of CSI-RS signal surpasses or surpasses or lower than a certain thresholding lower than the number of the CSI-RS signal of a certain thresholding;

4) intensity of the strongest CSI-RS signal surpasses or surpasses or lower than a certain thresholding lower than the intensity of a certain thresholding or the most weak CSI-RS signal;

5) sequence between in CSI-RS measuring-signal, intensity is the strongest n is compared with the information of carrying in the last measurement report variation (when CSI-RS signal number that n is all configurations, n can omit) has been occurred;

6) CSI-RS measure signal intensity is the strongest n there is variation (variation has occurred the formation of the strongest n CSI-RS signal, for example, has CSI-RS signal to become the strongest n from the strongest non-n one of individual.N is 1 o'clock, and its implication, for the strongest CSI-RS signal, variation has occurred);

7) there is variation in the magnitude relationship between at least one CSI-RS measure signal intensity and certain or certain several specific CSI-RS measure signal intensity, specific CSI-RS signal can be network side configuration, also can be defaulted as in CoMPmeasurement set the most by force, the most weak or the most all CSI-RS signal);

8) mean value of the measurement result of all CSI-RS signals that configure surpasses or lower than a certain thresholding;

9) the CRS signal measurement result of adjacent area surpasses or lower than a certain thresholding;

10) mean value of all CSI-RS signal measurement results that configure surpasses or lower than the CRS signal measurement result of best adjacent area.

The information such as above-mentioned thresholding, n can be configured in the RRC message in step S1.

Preferably, in step S1, network side is the satisfied time of configuration event further, while stipulating that only the measurement result in continuous certain hour all meets trigger conditions, and ability triggering terminal reporting measurement reports.

Network side also can be in RRC message further configuration when measurement report is triggered, the content of entrained measurement result in measurement report, for example can be, but not limited to is a certain in following condition, or certain several combination:

1) CSI-RS signal strength signal intensity surpasses the transmission node of a certain thresholding;

2) transmission node that CSI-RS signal strength signal intensity surpasses a certain thresholding and continues for some time;

3) CSI-RS measure strength rank transmission node within front n name in all CSI-RS signals.

Above-mentioned thresholding and rank n etc. are all configured in the RRC of step S1 message.

Preferably, network side can also be given the different different deviants of CSI-RS signal configures, and UE compares need to consider deviant when carrying out the comparison of CSI-RS signal after again.Can give different events unified configuration deviant or configure different deviants for each indie incident.

For example, when event is certain CSI-RS signal when definitely thresholding compares, can be for the event configuration deviant offset1 that surpasses absolute thresholding, and deviant offset2 different for the event configuration lower than certain absolute thresholding and offset1.In the situation of configuration deviant, for CSI-RS, surpass the situation of absolute thresholding, only, when CSI-RS measurement result is greater than absolute thresholding and adds offset1, just understand trigger event; And for CSI-RS lower than the absolute situation of thresholding, only when CSI-RS measurement result is when definitely thresholding deducts offset2, just understand trigger event.When adopting unified configuration, network side only configures a skew offset, and offset1 and offset2 all adopt same value; When adopting separate configurations, network side can separate configurations offset1 and offse2 be different value.

Preferably, when UE starts after measurement, network side can be notified UE to stop or being opened CSI-RS and measure by physical layer signaling, and above-mentioned physical layer signaling can be, but not limited to use PDCCH physical channel to carry.

By the above-mentioned method of passing through L3 signaling measurement reporting status information of channel reference signal providing, network side can obtain the channel state information reference signals measurement result of each transmission node of required measurement, and therefrom select the actual transmission node that will use, thereby improved the efficiency that eNB chooses transmission node, and the efficiency in CoMP when transmission.

Below in conjunction with several concrete execution modes, further the present invention is made an explanation, but it should be noted that the preferred embodiment, just in order better to describe the present invention, does not form the present invention is limited improperly.

Execution mode one

To take to surpass the predetermined threshold value of T1(when measurement result in the present embodiment) CSI-RS signal number trigger measurement report while changing and describe as example, its flow process as shown in Figure 6:

When configuration CoMP transmission, related procedure is as follows:

Step S602:eNB sends RRC reconfiguration message to UE.

In above-mentioned message, carry and need to measure a plurality of CSI-RS signal messages that report, configure L3 filtering parameter that CSI-RS signal adopts and the configuration of measurement report trigger event simultaneously, require when measurement result changes and stablizes a period of time over the CSI-RS signal number of T1 (number is initialized as 0), UE need to trigger measurement report, and in measurement report, only carries the measurement result that measurement result surpasses the CSI-RS signal of T1.Meanwhile, eNB in RRC message to n CSI-RS signal configures deviant Offsetn(for n CSI-RS, the measurement result that Rule of judgment is CSI-RSn adds and surpasses thresholding T1 after deviant Offsetn).

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

Step S606: when meeting trigger condition, terminal sends measurement report.Can process according to flow process as shown in Figure 6.

Step S608: when the CSI-RS that is necessary temporarily to stop UE when network side judgement measures, network side sends PDCCH physical layer signaling to UE, wherein carries CSI-RS measurement cease and desist order (Deactivate).

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

Step S612: when network side judgement is necessary again to start the CSI-RS measurement of UE, network side sends PDCCH physical layer signaling to UE, wherein carries CSI-RS and measures starting command (Activate).

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

For above-mentioned steps S606, can adopt flow process as shown in Figure 7 to process, comprise the following steps:

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

Step S704:UE adopts the L3 filtering parameter configuring in RRC message to process measurement result.

Step S706:UE judges whether to meet trigger condition.For example, can be to change over the CSI-RS signal number of T1 when UE finds measurement result in the present embodiment, UE triggers measurement report.

Step S708: in the situation that judgement satisfies condition, trigger measurement report, reporting measurement result.Preferably, in measurement report, only carry the measurement result that measurement result surpasses the CSI-RS signal of T1.Complete and report rear UE then sensing step S602 continuation detection CSI-RS signal.

In above-mentioned filtering is processed, can adopt following filtering to process formula:

F _n=(1-a)·F _n-1+a·M _n

Wherein, Fn is for needing the filtered measurement result of output; Mn is the last measurement result; Fn-1 is last filtered measurement result; The filtering factor of a for calculating according to L3 filtering parameter, computational methods are a=1/2 ^(k/4), k is that eNB configures the L3 filtering parameter to UE in RRC message.

Execution mode two

Be to compare with the information of carrying in the last measurement report and occurred to be changed to example and describe with the sequence between the strongest n of CSI-RS measure signal intensity in the present embodiment, its flow process is identical with execution mode one.

Difference is just: what in RRC reconfiguration message, carry in the present embodiment is to measure a plurality of CSI-RS signal messages that report, configure L3 filtering parameter and the configuration of measurement report trigger event that CSI-RS signal adopts simultaneously, require to compare with the information of carrying in the last measurement report when variation (order that initially sorts and configure in RRC message for network side) and new sequence having occurred remaining unchanged within a period of time when the sequence between the strongest n of CSI-RS measure signal intensity, UE need to trigger measurement report, and in measurement report, only carry the measurement result of a most front n CSI-RS.Meanwhile, eNB in RRC message to n CSI-RS signal configures deviant Offsetn(for n CSI-RS, the measurement result that the measurement result that participates in sequence is CSI-RSn adds the result after deviant Offsetn).

When the sequence between UE find that in the filtered measurement result of L3, CSI-RS measure signal intensity is the strongest n is compared variation has been occurred with the information of carrying in the last measurement report, UE triggers measurement report, the measurement result of carrying a strongest n CSI-RS in report.

All the other are identical with execution mode one, do not repeat them here.

Execution mode three

Be with the strongest n of CSI-RS measure signal intensity, to have occurred to be changed to example to describe in the present embodiment, its flow process is identical with execution mode one.

Difference is just: what in RRC reconfiguration message, carry in the present embodiment is to measure a plurality of CSI-RS signal messages that report, configure L3 filtering parameter and the configuration of measurement report trigger event that CSI-RS signal adopts simultaneously, require when the strongest n of CSI-RS measure signal intensity variation occurred and remained unchanged within a period of time (length of a period of time is configured by network side), UE need to trigger measurement report, and the measurement result of only carrying a most front m CSI-RS in measurement report.Meanwhile, eNB in RRC message to x CSI-RS signal configures deviant Offsetx(for x CSI-RS, the measurement result that the measurement result that participates in sequence is CSI-RSx adds the result after deviant Offsetx).

When n of finding that in the filtered measurement result of L3, CSI-RS measure signal intensity is the strongest of UE occurred to change and when new sequence remains unchanged within a period of time, UE triggers measurement report, what in report, carry is the measurement result of the strongest m CSI-RS.

All the other are identical with execution mode one, do not repeat them here.

Execution mode four

In the present embodiment with CSI-RS measure signal intensity higher than a certain absolute thresholding or be limited to example lower than a certain absolute door and describe, its flow process is identical with execution mode one.

Difference is just: what in RRC reconfiguration message, carry in the present embodiment is to measure a plurality of CSI-RS signal messages that report, configure L3 filtering parameter and the configuration of measurement report trigger event that CSI-RS signal adopts simultaneously, require when arbitrary CSI-RS measure signal intensity higher than (from lower than become higher than) a certain absolute thresholding or lower than (from higher than become lower than) a certain absolute thresholding and lasting higher or lower than a period of time, UE need to trigger measurement report, and the measurement result of only carrying a most front n CSI-RS in measurement report.Meanwhile, eNB in RRC message to n CSI-RS signal configures deviant Offsetn(for n CSI-RS, the measurement result that the measurement result that participates in sequence is CSI-RSn adds the result after deviant Offsetn).ENB is for CSI-RS measurement result higher than the absolute event configuration skew Offset1 of thresholding, and, when CSI-RS measurement result is during higher than absolute thresholding+offset1, UE just can trigger measurement; ENB is for CSI-RS measurement result lower than the absolute event configuration skew Offset2 of thresholding, and, when CSI-RS measurement result is during lower than absolute thresholding-offset1, UE just can trigger measurement; When UE judgement meets trigger conditions, UE triggers measurement report, and what in report, carry is the measurement result of the strongest n CSI-RS.

All the other are identical with execution mode one, do not repeat them here.

In another embodiment, also provide a kind of software, the technical scheme that this software is described for carrying out above-described embodiment and preferred implementation.

In another embodiment, also provide a kind of storage medium, stored above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.

As can be seen from the above description, the present invention has realized following technique effect:

The indication information of transmission node being measured by rrc layer message, terminal response is in the measurement result of the CSI-RS of this rrc layer information reporting, having solved terminal in prior art is difficult at feedback information, carry the technical problem that network side that the channel state information reference signals of all transmission nodes causes is difficult to know the signal quality of all transmission nodes by physical layer control channel, make network side can obtain the measurement result of the CSI-RS of all transmission nodes, thereby improved the accuracy of network side dynamic dispatching and the efficiency of transmission of CoMP.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a channel state information reference signals CSI-RS acquisition methods, is characterized in that, comprising:

Network side sends rrc layer message, wherein, carries the indication information of the transmission node that terminal need to measure in described rrc layer message;

Described network side receives the measurement report of described terminal to report, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the described transmission node that needs to measure in described measurement report.

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

3. method according to claim 1 and 2, is characterized in that, also carries the trigger condition that triggers measurement report described in described terminal to report in described rrc layer message.

4. method according to claim 3, is characterized in that, described trigger condition comprise following one of at least:

The measurement result of the CSI-RS that one or more transmission nodes in the described transmission node of need measuring are corresponding becomes and is less than described the first predetermined threshold from being not less than the first predetermined threshold;

The measurement result of the CSI-RS that one or more transmission nodes in the described transmission node of need measuring are corresponding becomes and is greater than described the second predetermined threshold from being not more than the second predetermined threshold;

The number that in the described transmission node of need measuring, the measurement result of CSI-RS is greater than the transmission node of the 3rd predetermined threshold is compared and is changed with the number that is greater than the transmission node of described the 3rd predetermined threshold in last measurement result;

The number that in the described transmission node of need measuring, the measurement result of CSI-RS is less than the transmission node of the 4th predetermined threshold is compared and is changed with the number that is less than the transmission node of described the 4th predetermined threshold in last measurement result;

The mean value of the measurement result of the CSI-RS of all transmission nodes that need to measure is greater than the 5th predetermined threshold;

The mean value of the measurement result of the CSI-RS of all transmission nodes that need to measure is less than the 6th predetermined threshold;

The formation that is greater than the transmission node that is greater than described the 7th predetermined threshold in the formation of transmission node of the 7th predetermined threshold and the measurement result of last CSI-RS in the described transmission node of need measuring in the measurement result of CSI-RS is different;

In the described transmission node of need measuring, in the measurement result of CSI-RS, be greater than in the measurement result putting in order from last CSI-RS of transmission node of the 8th predetermined threshold, be greater than the 8th predetermined threshold transmission node put in order different;

In the described transmission node of need measuring the measurement result of the CSI-RS of specific one or more transmission nodes put in order different from putting in order of the measurement result of the CSI-RS of last these specific one or more transmission nodes;

In the described transmission node of need measuring, in the measurement result of CSI-RS, the formation of N the strongest measurement result is different from the formation of N measurement result the strongest in last measurement result, and wherein, N is positive integer;

In the described transmission node of need measuring in the measurement result of CSI-RS in the measurement result putting in order from last CSI-RS of the strongest M transmission node the strongest M transmission node put in order differently, wherein, M is positive integer.

5. method according to claim 4, is characterized in that, described M and N are configured in described RRC message by described network side and/or the value of make an appointment in standard described M and N.

6. according to the method described in claim 4 or 5, it is characterized in that, the measurement result of described CSI-RS is that the result obtaining after described transmission node is measured adds the result after predetermined deviant.

7. method according to claim 6, is characterized in that, for needing the transmission node of measuring to configure identical or different described deviant described in each.

8. method according to claim 4, is characterized in that, the CSI-RS that described the 5th predetermined threshold is best adjacent area or the measurement result of CRS.

9. method according to claim 4, is characterized in that, described last measurement result is the measurement result that described terminal the last time reports described network side.

10. according to the method described in any one in claim 2 to 9, it is characterized in that, in described rrc layer message, also carry time span indication information, wherein, described time span indication information be used to indicate duration that described terminal meets described trigger condition in the measurement result of determining CSI-RS be more than or equal to described time span indication information in predetermined time during length, report described measurement report.

11. according to the method described in any one in claim 1 to 9, it is characterized in that, described measurement report carries the measurement result of the CSI-RS of following transmission node one of at least:

In the described transmission node that needs to measure, the measurement result of CSI-RS is greater than the transmission node of the tenth predetermined threshold;

In the described transmission node of need measuring, the measurement result of CSI-RS is greater than the 11 predetermined threshold, and the duration that is greater than described the 11 predetermined threshold is more than or equal to the transmission node of predetermined time threshold value;

In the described transmission node that needs to measure, the measurement result of CSI-RS comes the transmission node of front Q position, and wherein, Q is positive integer;

In the described transmission node that needs to measure, the measurement result of CSI-RS meets the transmission node of the trigger condition that triggers this measurement.

12. methods according to claim 1, is characterized in that, also carry the CRS measurement result of Serving cell in described measurement report.

13. methods according to claim 1, it is characterized in that, in described RRC message, also carry L3 filtering parameter, wherein, described L3 filtering parameter is used to indicate described terminal to carry out reporting described network side after filtering processing to described measurement result according to described L3 filtering parameter.

14. methods according to claim 1, is characterized in that, after network side sends rrc layer message, described method also comprises:

In the process of measuring in described terminal, described network side sends the second abort message that stops reporting the first abort message of described measurement report and/or stop measuring to described terminal.

15. methods according to claim 14, is characterized in that, described the first abort message is by PDCCH physical channel and/or RRC signaling bear, and described the second abort message is by PDCCH physical channel and/or RRC signaling bear.

16. methods according to claim 1, is characterized in that, described network side is ended one of in the following manner the measurement to the one or more transmission nodes in the described transmission node that needs to measure:

Described network side sends the indication information of the measurement of ending these one or more transmission nodes; Or

Described network side is deleted this one or more transmission nodes.

17. 1 kinds of channel state information reference signals CSI-RS report methods, is characterized in that, comprising:

Terminal receives the rrc layer message that network side sends, and wherein, carries the indication information of the transmission node that terminal need to measure in described rrc layer message;

Described terminal is measured the described transmission node of measuring that needs;

Described terminal, to described network side reporting measurement reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the described transmission node that needs to measure in described measurement report.

18. methods according to claim 17, is characterized in that, in described terminal, to before described network side reporting measurement reports, described method also comprises:

Whether the result that described terminal judges is measured meets the trigger condition of carrying in described rrc layer message;

If met, described terminal is to described network side reporting measurement reports.

19. methods according to claim 18, is characterized in that, described trigger condition comprise following one of at least:

20. according to the method described in claim 18 or 19, it is characterized in that, after the trigger condition that the result of measuring in described terminal judges is carried in meeting described rrc layer message, described method also comprises:

Whether the time that described terminal judges meets described trigger condition is more than or equal to predefined time span;

If so, measurement report described in described terminal to report.

21. methods according to claim 17, is characterized in that, in described terminal, to before described network side reporting measurement reports, described method also comprises:

Described terminal is carried out filtering processing according to the L3 filtering parameter carrying in described RRC message to measurement result;

Described terminal will be carried out measurement result after filtering processing as described measurement report.

22. 1 kinds of channel state information reference signals CSI-RS acquisition device, are positioned at network side, it is characterized in that, comprising:

Sending module, for sending rrc layer message, wherein, carries the indication information of the transmission node that terminal need to measure in described rrc layer message;

Receiver module, for receiving the measurement report of described terminal to report, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the described transmission node that needs to measure in described measurement report.

23. devices according to claim 22, is characterized in that, also carry the trigger condition that triggers measurement report described in described terminal to report in described rrc layer message.

24. devices according to claim 23, is characterized in that, described trigger condition comprise following one of at least:

25. 1 kinds of channel state information reference signals CSI-RS reporting devices, are arranged in terminal, it is characterized in that, comprising:

Receiver module, the rrc layer message sending for receiving network side, wherein, carries the indication information of the transmission node that terminal need to measure in described rrc layer message;

Measurement module, for measuring the described transmission node of measuring that needs;

Reporting module, for to described network side reporting measurement reports, wherein, carries the measurement result of the CSI-RS of the one or more transmission nodes in the described transmission node that needs to measure in described measurement report.

26. devices according to claim 25, is characterized in that, described reporting module comprises:

Judging unit, for judging whether measurement result meets the trigger condition of measurement report described in the described terminal to report of triggering that described rrc layer message carries;

Report unit, for reporting described measurement report while meeting described trigger condition determining.

27. devices according to claim 26, is characterized in that, described trigger condition comprise following one of at least: