CN105933048B - CSI measures limitation arrangement method and apparatus and measurement method for restarting and device - Google Patents
CSI measures limitation arrangement method and apparatus and measurement method for restarting and device Download PDFInfo
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- CN105933048B CN105933048B CN201610222145.5A CN201610222145A CN105933048B CN 105933048 B CN105933048 B CN 105933048B CN 201610222145 A CN201610222145 A CN 201610222145A CN 105933048 B CN105933048 B CN 105933048B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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Abstract
The embodiment of the invention provides a kind of CSI measurement limitation arrangement method and apparatus and measurement method for restarting and device, it includes: that cell is divided at least two logic regions previously according to the relationship between the change rate of angle of arrival and the movement speed of user terminal that CSI, which measures limitation arrangement method,；Obtain the change rate of SRS angle of arrival and the movement speed of user terminal；Determine the logic region that user terminal is currently located；User terminal is not configured CSI measurement limitation, and the corresponding CSI measurement limitation arrangement of the logic region that user terminal is currently located is to user terminal；User terminal has been configured CSI measurement limitation, judges whether the logic region being currently located is identical as the logic region where a upper period；The logic region being currently located and the logic region where a upper period be not identical, and the corresponding CSI measurement limitation arrangement of the logic region that user terminal is currently located sends aperiodic CSI request to user terminal, and to user terminal.The accuracy rate of CSI measurement can be improved in the present embodiment.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of CSI measure limitation arrangement method and apparatus and
Measure method for restarting and device.
Background technique
In LTE (Long Term Evolution, Long Term Evolution) system, (evolved Node B, is drilled for the base station eNB
Into type base station) when carrying out scheduling of resource and distribution to user terminal, it usually needs know the information of present channel.For uplink
Channel, SRS (Sounding Reference Singnal, the channel detection that the base station eNB can be sent by measurement user terminal
Reference signal) obtain the uplink channel information of each user terminal；For down channel, user terminal can be measured periodically
CSI-RS (Channel State Information-Reference Singnal, the channel state information that the base station eNB is sent
Reference signal) wave beam, obtain CSI (Channel State Information, channel state information) the measurement knot of optimum beam
Fruit, and the result is fed back into the base station eNB in the form of CSI report, the base station eNB is it can be seen that descending channel information.
In CSI measurement, (measurement limitation is regarded as one for the CSI measurement limitation that user terminal is configured according to the base station eNB
The balanced window of a time domain) the CSI-RS wave beam in measurement limitation is measured, obtain the information of optimum beam (most
The information of good wave beam includes the CSI information of ID (Identity, the identity) information and optimum beam of optimum beam).
In the prior art, CSI-RS wave beam is divided into the proprietary CSI-RS wave beam of cell and the proprietary CSI-RS wave beam of user.
For the former, each user may be configured multiple CSI-RS wave beams and the weighting matrix of each CSI-RS wave beam is constant.For
The latter, each user may only configure a CSI-RS Beam resources, but in order to track and adapt to the mobility of user, it should
The weighting matrix of CSI-RS wave beam can change with user's movement to adjust beam direction.
Under normal conditions, the base station eNB configures CSI measurement limitation according to the movement speed of user terminal for user terminal.So
And with the movement of user terminal, optimum beam can also change therewith.When the optimum beam information of user terminal changes,
If the measurement limitation of CSI changes without correspondence, it is possible that user terminal is to different wave beams, (cell is proprietary
CSI-RS wave beam) or same wave beam variation after weighting matrix (the proprietary CSI-RS wave beam of user) carry out CSI measurement the case where,
So that CSI measurement, which limits, contains the CSI letter of different beams or same beam weighting matrix variation front and back in corresponding CSI report
Breath, the inaccuracy for causing CSI to measure.
In the prior art, descending channel information is known for the ease of the base station eNB, CSI information usually requires to report 3 kinds of letters
Breath: CQI (Channel Quality Information, channel quality information), PMI (Precoding Matrix Index,
Pre-coding matrix index) and RI (Rank Indicator, grading index).
Existing CSI information includes broadband CSI information and subband CSI information, due to the broadband CQI in the CSI information of broadband
(wCQI) different with the period of subband CQI (sCQI) in subband CSI information, if user terminal, which is configured with, contains both
The mixing of CSI information is reported, when optimum beam or wave beam weight change, be may cause user terminal and is measured in CSI
CSI in limitation measures inaccuracy.
As shown in Figure 1, for the signal of the mixing report in the prior art containing broadband CSI information and subband CSI information
Figure, wherein dotted line frame is the CSI report period of corresponding wave beam, and the CSI report in 1 period of wave beam is based on first CSI measurement
Limit obtaining as a result, the CSI report in 2 period of wave beam is the result obtained based on second CSI measurement limitation.
Assuming that the optimum beam of user's selection becomes wave beam 2 from wave beam 1, the CQI reported within the CSI report period will be based on
The last time, the RI of report was calculated, it is thus possible to appear that the RI based on wave beam 2 has enough time measuring not yet,
And the sCQI measurement based on wave beam 2 has begun.To will lead at this time originally should be actually in wave based on the sCQI of wave beam 2
It being calculated on the basis of the RI report of beam 1, this allows for containing the CSI information of different beams in the same CSI measurement limitation,
Result in the inaccuracy of CSI measurement.
Summary of the invention
The embodiment of the present invention provides a kind of CSI measurement limitation arrangement method and apparatus and measurement method for restarting and dress
It sets, to improve the accuracy rate of CSI measurement.
In order to achieve the above objectives, the embodiment of the invention provides a kind of CSI to measure limitation arrangement method, is applied to eNB base
Controller in standing, which comprises
Previously according to the change rate v of angle of arrival between user terminal and the base station eNBαAnd the mobile speed of the user terminal
The relationship between v is spent, cell is divided at least two logic regions, and preset corresponding CSI measurement for each logic region
Limitation；
When receiving the SRS of user terminal period transmission, the variation of angle of arrival between user terminal and the base station eNB is obtained
Rate vαAnd the movement speed v of the user terminal；
According to the change rate v of angle of arrival between the user terminal of acquisition and the base station eNBαAnd the movement of the user terminal
Speed v determines the logic region that the user terminal is currently located；
If the user terminal is not configured CSI measurement limitation, the logic region that the user terminal is currently located
Corresponding CSI measurement limitation, is allocated to the user terminal；
If the user terminal has been configured CSI measurement limitation, judge the logic region being currently located whether with upper one
Logic region where period is identical；
When the logic region where the logic region and a upper period being currently located is not identical, then by the user terminal
The corresponding CSI measurement limitation of the logic region being currently located, is allocated to the user terminal, and non-to user terminal transmission
The instruction of period CSI request；So that user terminal is re-started according to the corresponding CSI measurement limitation of logic region being currently located
CSI measurement.
Preferably, the method also includes: one region parameter v is set for each logic region in advanceuValue range；
The change rate v of angle of arrival between the user terminal and the base station eNB according to acquisitionαAnd the user terminal
Movement speed v determines the logic region that the user terminal is currently located, comprising:
According to formulaCalculate the region parameter v of user terminalu；Wherein, vuFor region decision parameter,
β is effectiveness parameter, v0For the standard speed of definition, v is the movement speed of user terminal, and α is angle of arrival, vαFor the change of angle of arrival
Rate；
According to the region parameter v of user terminaluThe region parameter v fallen inuValue range, determine that the user is whole
The logic region that is currently located is held to be and the region parameter vuThe corresponding logic region of value range.
Preferably, the method also includes:
When the logic region for judging to be currently located is identical as the logic region where a upper period, according to recently twice
The ID of optimum beam judge that the user terminal sends whether optimum beam changes twice recently, when changing,
Whether the variable quantity of corresponding CSI, RSRP, RSSI or RSRQ measurement amount of optimum beam is greater than respective correspond in advance twice recently for judgement
If threshold value；
Preset threshold is corresponded to when the variable quantity for judging in described CSI, RSRP, RSSI or RSRQ measurement amount is greater than it
When value, the user terminal CSI measurement limitation is configured and has been allocated to the user terminal again；And to the user terminal
The aperiodic CSI request instruction is sent, so that user terminal re-starts CSI survey according to the CSI measurement limitation being configured
Amount.
Preferably, the user terminal, which is stored with each logic region, presets corresponding CSI measurement limitation；
CSI is measured limitation arrangement by modified radio resource control RRC by the controller in the base station eNB
Information is sent to the user terminal；The modified RRC includes modified IE physicalConfigDedicated；
Logic region and right is currently located comprising the user terminal in the modified IE physicalConfigDedicated
The configuration parameter for the CSI measurement limitation answered；So that the user terminal is according to configuration parameter, it is pre- from each logic region of storage
If in corresponding CSI measurement limitation, finding the CSI measurement limitation for being currently located logic region.
The embodiment of the invention also provides a kind of CSI to measure method for restarting, is applied to mobile terminal, which comprises
It is instructed according to the base station eNB of the current period received with the aperiodic CSI request that foregoing method is sent,
Reopen CSI measurement；And configured according to the base station eNB in foregoing method with user terminal current period region
Corresponding CSI measurement limitation enables corresponding CSI measurement limitation；
The information of optimum beam in CSI measurement result is sent to the base station eNB；The packet of the optimum beam
Include the id information of optimum beam and the CSI information of optimum beam.
The embodiment of the invention also provides a kind of CSI to measure limitation arrangement device, applied to the controller in the base station eNB,
Described device includes:
Logic region division module, for the change rate v previously according to angle of arrival between user terminal and the base station eNBαWith
And the relationship between the movement speed v of the user terminal, cell is divided at least two logic regions, and be each logic
Preset corresponding CSI measurement limitation in region；
Signal acquisition module, for obtaining user terminal and eNB base when receiving the SRS of user terminal period transmission
The change rate v of angle of arrival between standingαAnd the movement speed v of the user terminal；
Logic region determining module, the change rate v for angle of arrival between the user terminal and the base station eNB according to acquisitionα
And the movement speed v of the user terminal, determine the logic region that the user terminal is currently located；
First CSI measures limitation arrangement module, if not being configured CSI measurement limitation for the user terminal, by institute
The corresponding CSI measurement limitation of logic region that user terminal is currently located is stated, the user terminal is allocated to；
Logic region judgment module, if being configured CSI measurement limitation for the user terminal, judgement is currently located
Logic region it is whether identical as the logic region where a upper period；
2nd CSI measures limitation arrangement module, the logic where logic region and a upper period for being currently located
When region is not identical, then the corresponding CSI measurement limitation of the logic region being currently located the user terminal is allocated to the use
Family terminal, and aperiodic CSI request instruction is sent to the user terminal；So that user terminal is according to the logic area being currently located
The corresponding CSI measurement limitation in domain re-starts CSI measurement.
Preferably, described device further include:
Region parameter value range setup module, for a region parameter v to be arranged for each logic region in advanceuTake
It is worth range；
The logic region determining module, comprising:
Region parameter computing unit, for according to formulaCalculate the region parameter v of user terminalu；
Wherein, vuFor region decision parameter, β is effectiveness parameter, v0For the standard speed of definition, v is the movement speed of user terminal, and α is
Angle of arrival, vαFor the change rate of angle of arrival；
Logic region determination unit, for the region parameter v according to user terminaluThe region parameter v fallen inuTake
It is worth range, determines that the logic region that the user terminal is currently located is and the region parameter vuValue range corresponding patrol
Collect region.
Preferably, described device further include:
Variable quantity judgment module, for when the logic region where the logic region and a upper period for judging to be currently located
When identical, according to recently twice the ID of optimum beam judge that the user terminal sends whether optimum beam occurs twice recently
Variation judges recently the variable quantity of corresponding CSI, RSRP, RSSI or RSRQ measurement amount of optimum beam twice when changing
Whether it is greater than and respectively corresponds to preset threshold value；
3rd CSI measures limitation arrangement module, for working as the measurement amount judged in CSI, RSRP, RSSI or RSRQ
When variable quantity is greater than it and corresponds to preset threshold value, by the user terminal be configured CSI measurement limitation be allocated to again it is described
User terminal；And the aperiodic CSI request instruction is sent to the user terminal, so that user terminal foundation had been configured
CSI measurement limitation re-starts CSI measurement.
The embodiment of the invention also provides a kind of CSI to measure rebooting device, is applied to mobile terminal, and described device includes:
Module is restarted in CSI measurement, for being sent according to the base station eNB of the current period received with foregoing device
Aperiodic CSI request instruction, reopen CSI measurement；And configured according to the base station eNB with foregoing device and user
The corresponding CSI measurement limitation in terminal current period region, enables corresponding CSI measurement limitation；
CSI measurement result sending module, for the information of the optimum beam in CSI measurement result to be sent to the eNB
Base station；The information of the optimum beam includes the id information of optimum beam and the CSI information of optimum beam.
CSI measurement limitation arrangement method and apparatus provided in an embodiment of the present invention and measurement method for restarting and device, pass through
The change rate and movement speed of periodically collected angle of arrival are calculated, the logic region where judging user terminal is
It is not no to change, and configuration CSI measurement limitation accordingly, reduce same CSI measurement limit in include in corresponding CSI report
Different beams CSI information, improve CSI measurement accuracy；The base station eNB sends aperiodic CSI to user terminal simultaneously
Request instruction makes user terminal reopen CSI measurement, to abandon the CSI-RS before user terminal receives request and restarts
The CSI information of wave beam further improves the accuracy of CSI measurement.
Certainly, implement any of the products of the present invention or method it is not absolutely required at the same reach all the above excellent
Point.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of the mixing report in the prior art containing broadband CSI information and subband CSI information；
Fig. 2 is the flow chart that CSI provided in an embodiment of the present invention measures limitation arrangement method；
Fig. 3 is that the base station eNB provided in an embodiment of the present invention detects that the place logic region of user terminal is changed
Schematic diagram；
Fig. 4 is that the base station eNB provided in an embodiment of the present invention detects that the place logic region of user terminal does not change
Schematic diagram；
Fig. 5 is the flow chart that CSI provided in an embodiment of the present invention measures method for restarting；
Fig. 6 is the structural schematic diagram that CSI provided in an embodiment of the present invention measures limitation arrangement device；
Fig. 7 is the structural schematic diagram that CSI provided in an embodiment of the present invention measures rebooting device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
As shown in Fig. 2, measuring the flow chart of limitation arrangement method, this method application for CSI provided in an embodiment of the present invention
Controller in the base station eNB comprising:
S210, previously according to the change rate v of angle of arrival between user terminal and the base station eNBαAnd the user terminal
Cell is divided at least two logic regions by the relationship between movement speed v, and is preset for each logic region corresponding
CSI measurement limitation.
Specifically, user terminal can be the equipment such as mobile phone, tablet computer and smart television；User terminal and the base station eNB
Between angle of arrival be user terminal and the line of the base station eNB and the angle α of horizontal plane；The change rate v of angle of arrivalαFor angle α
Angular speed；The movement speed v of user terminal is the mobile speed mobile with user of the user terminal in eNB base station range
Degree.
Specifically, above-mentioned cell is the change rate v that user terminal is in angle of arrivalαWith the logical relation of movement speed v
Logic region, rather than the region on geographical location.For example, if respectively indicating arrival with the transverse and longitudinal coordinate of plane right-angle coordinate
The change rate v at angleαWith movement speed v, then cell is the region in plane right-angle coordinate；CSI measurement limitation is regarded as one
Balanced window in a time domain carries out balanced for CSI information of the user terminal to the CSI-RS wave beam in measurement limitation.In this reality
It applies in example, the change rate v of angle of arrivalαIt is inverse relation with movement speed v, it can be by formulaTo indicate；
Wherein, vuFor region decision parameter, β is customized constant (such as β=1), v0For definition standard speed (such as
v0=1 meter per second), v is the movement speed of user terminal, and α is angle of arrival, vαFor the change rate of angle of arrival.
Further, at least two logic regions can be divided a cell into.For example, can be according to the change rate v of angle of arrivalαWith
Rectangular coordinate system is divided into multiple regions by the value relationship of movement speed v.
Preferably, CSI measures limitation arrangement method further include: a region parameter v is arranged for each logic region in advanceu
Value range.
It in the present embodiment, can be according to region decision parameter vuValue range cell is divided, be divided at least two
A logic region.
For example, can be by region decision parameter vuValue range be divided into [0, A] and [A, B] two value ranges, and this two
A value range respectively corresponds two logic regions.Also a threshold value v can be setu0, work as vuWhen less than the threshold value, user terminal
In the first logic region, work as vuWhen greater than the threshold value, user terminal is in the second logic region.
Further, different CSI measurement limitations is configured to different logic regions.It is identical in speed in the present embodiment
In the case where, the CSI- of the lesser logic region of the change rate logic region more biggish than the change rate of angle of arrival in angle of arrival
The CSI information change speed of RS wave beam is slow.It therefore, can be region decision parameter vuValue range lesser logic region
User terminal configures shorter CSI measurement limitation or is region decision parameter vuThe biggish logic region of value range user
Terminal configures longer CSI measurement limitation, to reduce the different beams in the same CSI measurement limitation corresponding CSI report period
Or the CSI information of same beam weighting matrix variation front and back.
For example, defining two different CSI measurement limitation t0And t1, it is respectively used to region decision parameter vuValue range
Biggish logic region and region decision parameter vuThe lesser logic region of value range user terminal, therefore CSI measure
Limit t0Limitation t should be measured than CSI1Greatly.For example, the relationship of the two can be expressed as,Wherein, γ is in area
Between in [0,1].
S220 obtains angle of arrival between user terminal and the base station eNB when receiving the SRS of user terminal period transmission
Change rate vαAnd the movement speed v of the user terminal.
Specifically, user terminal can periodically send SRS, when the base station eNB receives the SRS that a certain user terminal is sent
Afterwards, the change rate v of angle of arrival between the user terminal and the base station eNB can be obtained by SRSαAnd the mobile speed of the user terminal
Spend v.
S230, according to the change rate v of angle of arrival between the user terminal of acquisition and the base station eNBαAnd the user terminal
Movement speed v, determine the logic region that the user terminal is currently located.
Specifically, may include following refinement step:
Step 1: according to formulaCalculate the region parameter v of user terminalu。
Specifically, according to the change rate v of angle of arrival between user terminal and the base station eNBαAnd the mobile speed of user terminal
The inverse relation for spending v, calculates the change rate v of current period angle of arrivalαWith the region parameter v of movement speed vu。
Step 2: according to the region parameter v of user terminaluThe region parameter v fallen inuValue range, determine described in
The logic region that user terminal is currently located be and the region parameter vuThe corresponding logic region of value range.
Specifically, according to the region parameter v for the current period user terminal being calculatedu, judge region parameter vuIt falls in
Ready-portioned some region parameter vuValue range in, according to region parameter vuValue range is determining and the range phase
Corresponding logic region determines that the logic region is the logic region where current period user terminal.
S240, if the user terminal is not configured CSI measurement limitation, the logic that the user terminal is currently located
The corresponding CSI measurement limitation in region, is allocated to the user terminal.
Specifically, in order to make user terminal support the base station eNB, it configures CSI measurement limitation, and the base station eNB can be sent in advance
Each logic region presets corresponding CSI measurement limitation to user terminal, and user terminal stores the default correspondence of each logic region
CSI measure limitation.When the base station eNB needs to configure CSI measurement limitation, the controller in the base station eNB passes through modified IE
CSI measurement limitation arrangement information is sent to user terminal by physicalConfigDedicated.
Specifically, the controller in the base station eNB passes through modified RRC (Radio Resource Control, wireless money
Source control protocol) by CSI measurement limitation arrangement information be sent to user terminal.
Wherein, modified RRC includes modified IE physicalConfigDedicated, and modified IE
It include that identifying subscriber terminal is currently located logic region and corresponding CSI measurement limit in physicalConfigDedicated
The configuration parameter UE-MODE of system, so that user terminal is according to configuration parameter UE-MODE, it is pre- from each logic region of storage
If in corresponding CSI measurement limitation, finding the CSI measurement limitation for being currently located logic region.
Specifically there is following two situation in configuration parameter UE-MODE:
Situation 1:UE-MODE=0.Indicate that user is in region decision parameter vuThe biggish logic region of value range,
Limitation t is measured using CSI0。
Situation 2:UE-MODE=1.Indicate that user is in region decision parameter vuThe lesser logic region of value range,
Limitation t is measured using CSI1。
PhysicalConfigDedicated-r13 is amended as follows:
Further, after the logic region where current period user terminal has been determined, judge user terminal whether
It is configured for CSI measurement limitation, if user terminal is not configured CSI measurement limitation, the base station eNB can configure for user terminal
Current period CSI measurement limitation corresponding with the logic region where it.In the present embodiment, user terminal is not configured CSI survey
The SRS that the case where amount limitation can send for user terminal is detected by the base station eNB for the first time, and the base station eNB not yet configures for it
CSI measurement limitation.
It is worth noting that, in the present embodiment, referring herein to CSI measurement limitation arrangement only refer in user terminal
Receive and store the transmission of the base station eNB each logic region preset corresponding CSI measurement limitation after, the base station eNB is according to user
The CSI measurement limitation that the concrete condition of terminal should need it carries out the modulation of size, and logical by configuration parameter UE-MODE
The process for knowing its CSI measurement limitation that should be chosen of user terminal does not include that user stores each logic that the base station eNB is sent
Preset the process of corresponding CSI measurement limitation in region.
S250, if the user terminal be configured CSI measurement limitation, judge the logic region being currently located whether with
Logic region where a upper period is identical.
Specifically, after the base station eNB receives the SRS that user terminal is repeatedly sent, CSI measurement limit is configured with for it
System, then according to the change rate v of current period angle of arrivalαWith the calculated result of movement speed v, judge that current period user terminal is fallen
The logic region range that is fallen in upper cycle user terminal of logic region range whether change.
In the present embodiment, user terminal can measure limitation according to CSI and measure to CSI-RS wave beam.CSI measurement limit
The length of system is different, and the CSI report period resulted in measurement result is different, this implementation passes through multiple using dividing a cell into
Logic region measures limitation for the CSI that each logic region configures different length, and periodic adjustment user region is next all
Phase property configures the principle of the CSI measurement limitation of different length, and to reduce, there are also the CSI of different wave beams to believe in the CSI report period
Breath.
S260, when the logic region where the logic region and a upper period being currently located is not identical, then by the use
The logic region that family terminal is currently located corresponding CSI measurement limitation, is allocated to the user terminal, and to the user terminal
Send aperiodic CSI request instruction；So that user terminal limits again according to the corresponding CSI measurement of logic region being currently located
Carry out CSI measurement.
In the present embodiment, in order to help user terminal to re-start CSI measurement, the MR_MODE signaling of 1bit a kind of is defined,
When MR_MODE=1, illustrate that user terminal should use CSI measurement limitation t1；When MR_MODE=0, illustrate that user terminal should
Limitation t is measured using CSI0。
Specifically, if what the logic region range that falls in of current period user terminal and upper cycle user terminal were fallen in
Logic region range is different, then the base station eNB can configure CSI measurement corresponding with its current period region for user terminal
Limitation, while aperiodic CSI request instruction is sent to user terminal, user terminal receives the instruction, and according to its current week
The corresponding CSI measurement limitation of logic region where phase re-starts CSI measurement to CSI-RS wave beam, is connect with abandoning user terminal
The CSI information for receiving the CSI-RS wave beam before requesting and restarting reduces same CSI measurement and limits interior corresponding CSI report
In include different beams CSI information, improve CSI measurement accuracy.
CSI provided in an embodiment of the present invention measures limitation arrangement method, passes through the change to periodically collected angle of arrival
Rate and movement speed are calculated, and whether the logic region where judging user terminal changes, and configures CSI accordingly
Measurement limitation reduces the CSI information that same CSI measurement limits the different beams for including in interior corresponding CSI report, improves
The accuracy of CSI measurement；The base station eNB sends aperiodic CSI request instruction to user terminal simultaneously, reopens user terminal
CSI measurement is further improved with abandoning the CSI information that user terminal receives the CSI-RS wave beam before requesting and restarting
The accuracy of CSI measurement.
Fig. 3 is that the base station eNB provided in an embodiment of the present invention detects that the place logic region of user terminal is changed
Schematic diagram.As shown in figure 3, left side is the base station eNB, right side is user terminal, and the base station eNB receives the SRS of user terminal transmission
Afterwards, according to the change rate v of angle of arrivalαLogic region (the region decision parameter v where the user terminal is judged with movement speed vu
The lesser logic region of value range) and CSI corresponding with the logic region measurement limitation t1, the base station eNB to user end
End sends the configuration parameter UE-MODE=1 for representing configuration CSI measurement limitation, and user terminal is according to the signaling to CSI-RS wave beam
It carries out CSI measurement and obtains optimum beam ID and optimum beam CSI information.
Meanwhile user terminal also will continue to periodicity sending SRS, the base station eNB judges the user terminal according to SRS at this time
Whether the logic region at place is changed, if logic region has changed to region decision parameter vuValue range it is biggish
Logic region then judges that user terminal needs to configure new CSI measurement limitation t at this time0.The base station eNB sends generation to user terminal
Table configures the signaling for the MR_MODE=0 that CSI corresponding with logic region measurement limits, while the base station eNB is to user terminal
Send the request instruction for re-starting CSI measurement, user receives the instruction of aperiodic CSI request, and according to the logic region
Corresponding CSI measurement limitation re-starts CSI measurement, and measurement result is sent to the base station eNB by end user's terminal, it is laggard
The circulate operation of the base station row eNB and user terminal.
Further, this method further include:
Step A, when the logic region for judging to be currently located is identical as the logic region where a upper period, according to most
The ID of closely optimum beam twice judge that the user terminal sends whether optimum beam changes twice recently, becoming
When change, whether the variable quantity of corresponding CSI, RSRP, RSSI or RSRQ measurement amount of optimum beam is greater than respectively twice recently for judgement
Corresponding preset threshold value.
Specifically, id information is the intrinsic information of optimum beam, and different wave beams corresponds to different id informations.For example, BI1
The id information of wave beam 1 and wave beam 2 is each can represent with BI2.
After the ID of optimum beam changes twice recently, the corresponding CSI measurement amount of optimum beam twice is judged recently
Variable quantity whether be greater than preset threshold value.In the present embodiment, the judgment basis of selection can be the CQI in CSI.
It preferably, can also be by RSRP (Reference Singnal Receiving Poner, reference signal reception function
Rate), RSSI (ReceivedSignalStrengthIndicator receives the intensity instruction of signal) and RSRQ (Reference
Singnal Receiving Quality, Reference Signal Received Quality) etc. information sentence as judgment basis, and according to different
It is disconnected respectively to correspond to preset threshold value as judgment criteria according to selection.For example, the variation of CSI, RSRP, RSSI or RSRQ measurement amount
Amount respectively corresponds to preset threshold value and may respectively be a1、a2、a3And a4。
Step B, when the variable quantity for judging in CSI, RSRP, RSSI or RSRQ measurement amount is preset greater than its correspondence
When threshold value, the user terminal CSI measurement limitation is configured and has been allocated to the user terminal again；And it is whole to the user
End sends the aperiodic CSI request instruction, so that user terminal re-starts CSI according to the CSI measurement limitation being configured
Measurement.
For example, if the variable quantity of the CQI in the CSI information of optimum beam is greater than its corresponding threshold value a twice recently1,
Or the variable quantity of RSRP information is greater than its corresponding threshold value a2Or the variable quantity of RSSI information is greater than its corresponding threshold value a3Or
The variable quantity of RSRQ information is greater than its corresponding threshold value a4, then user terminal has been configured CSI measurement limitation again by the base station eNB
It is allocated to user terminal (the CSI measurement limitation in i.e. nearest two periods is constant), while the base station eNB is sent to the user terminal
Aperiodic CSI request instruction, request user terminal reopen CSI measurement, and user terminal receives aperiodic CSI request and refers to
It enables, measures limitation according to the CSI being configured and re-start CSI measurement, limit interior corresponding CSI to reduce same CSI measurement
The CSI information for the different beams for including in report improves the accuracy of CSI measurement.
Fig. 4 is that the base station eNB provided in an embodiment of the present invention detects that the place logic region of user terminal does not change
Schematic diagram.As shown in figure 4, left side is the base station eNB, right side is user terminal.The base station eNB receives user terminal transmission
After SRS, according to the change rate v of angle of arrivalαThe region decision parameter v where the user terminal is judged with movement speed vuValue
The lesser logic region of range and CSI corresponding with logic region measurement limitation t1.The base station eNB sends generation to user terminal
Table configures the configuration parameter UE-MODE=1 of CSI measurement limitation, and user terminal carries out CSI-RS wave beam according to UE-MODE signaling
CSI measurement obtains optimum beam ID and optimum beam CSI information.
Meanwhile user terminal also will continue to periodicity sending SRS, if the base station eNB judges the user according to SRS at this time
There is no variations for logic region where terminal, then according to the ID of optimum beam judges the user terminal hair twice recently
Send whether optimum beam changes twice recently, if there is a change, the base station eNB sends aperiodic CSI to user terminal
Request instruction and the MR_MODE=1 signaling for representing configuration CSI measurement limitation corresponding with the logic region, user terminal connect
Aperiodic CSI request instruction is received, and CSI measurement is re-started according to MR_MODE=1 signaling.
In the present embodiment, in the case where the place logic region of user terminal does not change, further analysis is best
The situation of change of wave beam, and aperiodic CSI request instruction is sent, make user terminal restarting CSI measurement, reduces same
CSI measurement limits the CSI information for the different beams for including in interior corresponding CSI report, improves the accuracy of CSI measurement.
Embodiment two
As shown in figure 5, measuring the flow chart of method for restarting for CSI provided in an embodiment of the present invention, this method is applied to move
Dynamic terminal comprising:
S510 instructs according to the aperiodic CSI request that the base station eNB of the current period received is sent, reopens CSI
Measurement；And limitation, enabling pair are measured according to the CSI corresponding with user terminal current period region of the base station eNB configuration
The CSI measurement limitation answered.Wherein, the CSI of aperiodic CSI request instruction and configuration measures limitation, and specifically the base station eNB is to scheme
CSI shown in 2 measures what limitation arrangement method was sent.
Specifically, it after the aperiodic CSI request that user terminal receives the transmission of the base station eNB instructs, is configured according to the base station eNB
CSI corresponding with the logic region where its current period measurement limitation to CSI-RS wave beam re-start CSI measurement, with throw
Abandon the CSI information for the CSI-RS wave beam that user terminal receives before requesting and restarting.
The information of optimum beam in CSI measurement result is sent to the base station eNB by S520；The optimum beam
Information includes the id information of optimum beam and the CSI information of optimum beam.
After user terminal CSI is measured, by the id information of the optimum beam in CSI measurement result and optimum beam
CSI information is sent to the base station eNB in the form of CSI report, so that the base station eNB carries out the circular treatment in next period.
CSI provided in an embodiment of the present invention measures method for restarting, since the base station eNB passes through to periodically collected arrival
The change rate and movement speed at angle are calculated, and whether the logic region where judging user terminal changes, and corresponding
CSI measurement limitation is configured, the CSI letter for the different beams for including in corresponding CSI report in same CSI measurement limitation is reduced
Breath improves the accuracy of CSI measurement；The base station eNB sends aperiodic CSI request instruction to user terminal simultaneously, keeps user whole
End reopens CSI measurement, to abandon the CSI information that user terminal receives the CSI-RS wave beam before requesting and restarting, into
One step improves the accuracy of CSI measurement.
Embodiment three
As shown in fig. 6, measuring the structural schematic diagram of limitation arrangement device, the device for CSI provided in an embodiment of the present invention
Applied to mobile terminal, for executing above-mentioned method shown in Fig. 2, which includes:
Logic region division module 610, for the change rate v previously according to angle of arrival between user terminal and the base station eNBα
And the relationship between the movement speed v of the user terminal, cell is divided at least two logic regions, and each to patrol
It collects region and presets corresponding CSI measurement limitation；
Signal acquisition module 620, for obtaining user terminal and eNB when receiving the SRS of user terminal period transmission
The change rate v of angle of arrival between base stationαAnd the movement speed v of the user terminal；
Logic region determining module 630, the change rate for angle of arrival between the user terminal and the base station eNB according to acquisition
vαAnd the movement speed v of the user terminal, determine the logic region that the user terminal is currently located；
First CSI measures limitation arrangement module 640, will if not being configured CSI measurement limitation for the user terminal
The corresponding CSI measurement limitation of the logic region that the user terminal is currently located, is allocated to the user terminal；
Logic region judgment module 650, if being configured CSI measurement limitation for the user terminal, judgement is current
Whether the logic region at place is identical as the logic region where a upper period；
2nd CSI measured limitation arrangement module 660, the logic region for being currently located and patrolling where a upper period
When volume region is not identical, then the corresponding CSI measurement limitation of the logic region being currently located the user terminal is allocated to described
User terminal, and aperiodic CSI request instruction is sent to the user terminal；So that user terminal is according to the logic being currently located
The corresponding CSI measurement limitation in region re-starts CSI measurement.
CSI provided in an embodiment of the present invention measures limitation arrangement device, passes through the change to periodically collected angle of arrival
Rate and movement speed are calculated, and whether the logic region where judging user terminal changes, and configures CSI accordingly
Measurement limitation reduces the CSI information that same CSI measurement limits the different beams for including in interior corresponding CSI report, improves
The accuracy of CSI measurement；The base station eNB sends aperiodic CSI request instruction to user terminal simultaneously, reopens user terminal
CSI measurement is further improved with abandoning the CSI information that user terminal receives the CSI-RS wave beam before requesting and restarting
The accuracy of CSI measurement.
Further, Fig. 6 shown device can also include:
Region parameter value range setup module (being not shown in Fig. 6), for being arranged one in advance for each logic region
Region parameter vuValue range.
Preferably, the logic region determining module 630, comprising:
Region parameter computing unit, for according to formulaCalculate the region parameter v of user terminalu；
Wherein, vuFor region decision parameter, β is effectiveness parameter, v0For the standard speed of definition, v is the movement speed of user terminal, and α is
Angle of arrival, vαFor the change rate of angle of arrival；
Logic region determination unit, for the region parameter v according to user terminaluThe region parameter v fallen inuTake
It is worth range, determines that the logic region that the user terminal is currently located is and the region parameter vuValue range corresponding patrol
Collect region.
Further, device shown in fig. 6 can also include:
Variable quantity judgment module (is not shown) in Fig. 6, for when the logic region and a upper period for judging to be currently located
When the logic region at place is identical, according to recently twice the ID of optimum beam judge that the user terminal sends recently twice most
Whether good wave beam changes, and when changing, judges recently optimum beam corresponding CSI, RSRP, RSSI or RSRQ twice
Whether the variable quantity of measurement amount, which is greater than, respectively corresponds to preset threshold value；
3rd CSI measures limitation arrangement module, for working as the measurement amount judged in CSI, RSRP, RSSI or RSRQ
When variable quantity is greater than it and corresponds to preset threshold value, by the user terminal be configured CSI measurement limitation be allocated to again it is described
User terminal；And the aperiodic CSI request instruction is sent to the user terminal, so that user terminal foundation had been configured
CSI measurement limitation re-starts CSI measurement.
In the present embodiment, in the case where the place logic region of user terminal does not change, further analysis is best
The situation of change of wave beam, and aperiodic CSI request instruction is sent, make user terminal restarting CSI measurement, reduces same
CSI measurement limits the CSI information for the different beams for including in interior corresponding CSI report, improves the accuracy of CSI measurement.
Example IV
As shown in fig. 7, measuring the structural schematic diagram of rebooting device, the device application for CSI provided in an embodiment of the present invention
In mobile terminal, for executing method described in above-mentioned Fig. 5, which includes:
Module 710 is restarted in CSI measurement, for being sent out according to the base station eNB of the current period received with device shown in fig. 6
The aperiodic CSI request instruction sent, reopens CSI measurement；And configured according to the base station eNB with device shown in fig. 6 with
The corresponding CSI measurement limitation in family terminal current period region, enables corresponding CSI measurement limitation；
CSI measurement result sending module 720, it is described for the information of the optimum beam in CSI measurement result to be sent to
The base station eNB；The information of the optimum beam includes the id information of optimum beam and the CSI information of optimum beam.
CSI provided in an embodiment of the present invention measures rebooting device, since the base station eNB is to periodically collected angle of arrival
Change rate and movement speed are calculated, and whether the logic region where judging user terminal changes, and configures accordingly
CSI measurement limitation reduces the CSI information that same CSI measurement limits the different beams for including in interior corresponding CSI report, mentions
The high accuracy of CSI measurement；The base station eNB sends aperiodic CSI request instruction to user terminal simultaneously, makes user terminal again
CSI measurement is opened further to mention to abandon the CSI information that user terminal receives the CSI-RS wave beam before requesting and restarting
The high accuracy of CSI measurement.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (7)
1. a kind of CSI measures limitation arrangement method, which is characterized in that applied to the controller in the base station eNB, the method packet
It includes:
One region parameter v is set for each logic region in advanceuValue range；
Previously according to the change rate v of angle of arrival between user terminal and the base station eNBαAnd the movement speed v of the user terminal it
Between relationship, cell is divided at least two logic regions, and preset corresponding CSI measurement limitation for each logic region；
When receiving the SRS of user terminal period transmission, the change rate v of angle of arrival between user terminal and the base station eNB is obtainedα
And the movement speed v of the user terminal；
According to formulaCalculate the region parameter v of user terminalu；Wherein, vuFor region decision parameter, β is effect
With parameter, v0For the standard speed of definition, v is the movement speed of user terminal, and α is angle of arrival, vαFor the change rate of angle of arrival；
According to the region parameter v of user terminaluThe region parameter v fallen inuValue range, determine that the user terminal is worked as
The logic region at preceding place be and the region parameter vuThe corresponding logic region of value range；
If the user terminal is not configured CSI measurement limitation, the logic region that the user terminal is currently located is corresponding
CSI measure limitation, be allocated to the user terminal；
If the user terminal be configured CSI measurement limitation, judge the logic region being currently located whether with a upper period
The logic region at place is identical；
It is when the logic region where the logic region and a upper period being currently located is not identical, then the user terminal is current
The corresponding CSI measurement limitation of the logic region at place, is allocated to the user terminal, and aperiodic to user terminal transmission
CSI request instruction；So that user terminal re-starts CSI survey according to the corresponding CSI measurement limitation of logic region being currently located
Amount.
2. the method according to claim 1, wherein the method also includes:
When the logic region for judging to be currently located is identical as the logic region where a upper period, according to nearest two suboptimum
The ID of wave beam judge that the user terminal sends whether optimum beam changes twice recently, when changing, judgement
Recently twice the variable quantity of corresponding CSI, RSRP, RSSI or RSRQ measurement amount of optimum beam whether be greater than respectively correspond to it is preset
Threshold value；
Preset threshold value is corresponded to when the variable quantity for judging in described CSI, RSRP, RSSI or RSRQ measurement amount is greater than it
When, the user terminal has been configured CSI measurement limitation and has been allocated to the user terminal again；And it is sent out to the user terminal
The aperiodic CSI request instruction is sent, so that user terminal re-starts CSI measurement according to the CSI measurement limitation being configured.
3. the method according to claim 1, wherein the user terminal is stored with default pair of each logic region
The CSI measurement limitation answered；
CSI is measured limitation arrangement information by modified radio resource control RRC by the controller in the base station eNB
It is sent to the user terminal；The modified RRC includes modified IE physicalConfigDedicated；It is described
Logic region and corresponding is currently located comprising the user terminal in modified IE physicalConfigDedicated
The configuration parameter of CSI measurement limitation；So that the user terminal is according to configuration parameter, from default pair of each logic region of storage
In the CSI measurement limitation answered, the CSI measurement limitation for being currently located logic region is found.
4. a kind of CSI measures method for restarting, which is characterized in that be applied to mobile terminal, which comprises
Referred to according to the base station eNB of the current period received with the aperiodic CSI request that method described in claim 1 is sent
It enables, reopens CSI measurement；And configured according to the base station eNB in method described in claim 1 with user terminal current period
The corresponding CSI measurement limitation in region, enables corresponding CSI measurement limitation；
The information of optimum beam in CSI measurement result is sent to the base station eNB；The information of the optimum beam includes most
The id information of good wave beam and the CSI information of optimum beam.
5. a kind of CSI measures limitation arrangement device, which is characterized in that applied to the controller in the base station eNB, described device packet
It includes:
Region parameter value range setup module, for a region parameter v to be arranged for each logic region in advanceuValue model
It encloses；
Logic region division module, for the change rate v previously according to angle of arrival between user terminal and the base station eNBαAnd it is described
Cell is divided at least two logic regions by the relationship between the movement speed v of user terminal, and pre- for each logic region
If corresponding CSI measurement limitation；
Signal acquisition module, for when receiving the SRS of user terminal period transmission, obtain user terminal and the base station eNB it
Between angle of arrival change rate vαAnd the movement speed v of the user terminal；
Logic region determining module, for according to formulaCalculate the region parameter v of user terminalu；Wherein,
vuFor region decision parameter, β is effectiveness parameter, v0For the standard speed of definition, v is the movement speed of user terminal, and α is to reach
Angle, vαFor the change rate of angle of arrival；According to the region parameter v of user terminaluThe region parameter v fallen inuValue range,
Determine that the logic region that the user terminal is currently located is and the region parameter vuThe corresponding logic region of value range；
First CSI measures limitation arrangement module, if not being configured CSI measurement limitation for the user terminal, by the use
The corresponding CSI measurement limitation of the logic region that family terminal is currently located, is allocated to the user terminal；
Logic region judgment module judges that is be currently located patrols if being configured CSI measurement limitation for the user terminal
Whether identical as the logic region where a upper period collected region；
2nd CSI measures limitation arrangement module, the logic region where logic region and a upper period for being currently located
When not identical, then it is whole to be allocated to the user for the corresponding CSI measurement limitation of the logic region being currently located the user terminal
End, and aperiodic CSI request instruction is sent to the user terminal；So that user terminal is according to the logic region pair being currently located
The CSI measurement limitation answered re-starts CSI measurement.
6. device according to claim 5, which is characterized in that described device further include:
Variable quantity judgment module is identical as the logic region where a upper period for working as the logic region for judging to be currently located
When, according to recently twice the ID of optimum beam judge that the user terminal sends whether optimum beam becomes twice recently
Change, when changing, the variable quantity of corresponding CSI, RSRP, RSSI or RSRQ measurement amount of optimum beam is twice recently for judgement
It is no be greater than respectively correspond to preset threshold value；
3rd CSI measures limitation arrangement module, for when the variation for judging a measurement amount in CSI, RSRP, RSSI or RSRQ
When amount is greater than its correspondence preset threshold value, the user terminal CSI measurement limitation is configured and has been allocated to the user again
Terminal；And the aperiodic CSI request instruction is sent to the user terminal, so that user terminal is according to the CSI being configured
Measurement limitation re-starts CSI measurement.
7. a kind of CSI measures rebooting device, which is characterized in that be applied to mobile terminal, described device includes:
Module is restarted in CSI measurement, for being sent out according to the base station eNB of the current period received with device as claimed in claim 6
The aperiodic CSI request instruction sent, reopens CSI measurement；And it is configured according to the base station eNB with device as claimed in claim 6
CSI corresponding with user terminal current period region measure limitation, enable corresponding CSI measurement limitation；
CSI measurement result sending module, for the information of the optimum beam in CSI measurement result to be sent to the base station eNB；
The information of the optimum beam includes the id information of optimum beam and the CSI information of optimum beam.
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