CN104067661B - The acquisition methods and user equipment of received signal strength indicator value - Google Patents
The acquisition methods and user equipment of received signal strength indicator value Download PDFInfo
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- CN104067661B CN104067661B CN201280047990.3A CN201280047990A CN104067661B CN 104067661 B CN104067661 B CN 104067661B CN 201280047990 A CN201280047990 A CN 201280047990A CN 104067661 B CN104067661 B CN 104067661B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
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Abstract
The embodiment of the present invention provides a kind of acquisition methods and user equipment of received signal strength indicator value, and this method includes：It obtains and measures subframe, wherein, it measures subframe and includes interference signal；And determine to measure the received signal strength indicator value RSSI of subframe, wherein, RSSI is determined based on the measurement subframe performed after interfering deletion, and interference is deleted as the interference signal in deletion measurement subframe.Technical scheme of the present invention determines RSSI by obtaining the measurement subframe comprising interference signal first, then based on the measurement subframe after interference is deleted is performed, can improve the accuracy that UE measures RSSI value, and then improve the accuracy for measuring RSRQ values.
Description
Technical field
The present embodiments relate to the communication technology more particularly to a kind of acquisition methods and use of received signal strength indicator value
Family equipment.
Background technology
For lifting system performance, in long term evolution（Long Term Evolution, abbreviation LTE）The heterogeneous network of system
（Heterogeneous Network, abbreviation HetNet）In, introduce cell serves range extension (Cell Range
Extension, abbreviation CRE）Technology.CRE technologies refer to that service user can be by by force from the strong macro base station switching in signal of signal
Weak micro-base station, so that micro-base station can service more user equipmenies（User Equipment, abbreviation UE）, by this kind of quilt
It is known as the CRE UE of micro-base station service from the user equipment of the weak micro-base station of the strong macro base station switching in signal of signal by force.
In LTE system, UE can carry out wireless resource management in demodulated signal（Radio Resource
Management, abbreviation RRM）It measures, such as to Reference Signal Received Power（Reference Signal Received
Power, abbreviation RSRP）And Reference Signal Received Quality（Reference Signal Received Quality, abbreviation RSRQ）
Measurement, obtained measured value can reflect the channel quality residing for current UE, and may be used as UE carry out cell reselection or
The basis for estimation of cell switching.Wherein, RSRP can be defined as in specified Measurement bandwidth, and all carrying cell-levels are with reference to letter
Number（Cell-specific Reference Signal, abbreviation CRS）The linear of power on the resource location of reference signal is put down
Mean value, RSRQ can be defined as N × RSRP/RSSI, and N represents to carry out received signal strength indicator（Received Signal
Strength Indicator, abbreviation RSSI）Resource block number during measurement.
But in the prior art, the RSSI value that CRE UE are measured is often inaccurate, and then leads to the RSRQ values measured
It is inaccurate.
Invention content
The present invention provides a kind of acquisition methods and user equipment of received signal strength indicator value, and RSSI is measured to improve UE
The accuracy of value, and then improve the accuracy for measuring RSRQ values.
In a first aspect, a kind of acquisition methods of received signal strength indicator value are provided, including：
It obtains and measures subframe, wherein, the measurement subframe includes interference signal；And
Determine the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is dry based on performing
Disturb what the measurement subframe after deleting determined, the interference is deleted to delete the interference signal measured in subframe.
In the first possible realization method of first aspect, before the RSSI for determining the measurement subframe, institute
The method of stating further includes：
The interference is performed to the interference signal included in the measurement subframe to delete；
It is described to determine the RSSI for measuring subframe, including：
Using described in the OFDM symbol calculating of required calculating in the measurement subframe performed after the interference is deleted
RSSI, wherein, the required OFDM symbol calculated is to own in the measurement subframe performed after the interference is deleted
Orthogonal frequency division multiplex OFDM symbol.
According in a first aspect, in second of possible realization method, the RSSI for determining the measurement subframe is wrapped
It includes：
Determine first group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, first group of OFDM symbol is institute
It states and measures in subframe, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol is the measurement subframe
In to perform it is described interference delete OFDM symbol；
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is described
First group of OFDM symbol.
According in a first aspect, in the third possible realization method, it is described determine the RSSI for measuring subframe before,
The method further includes：
Determine second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, second group of OFDM symbol is institute
It states to measure and the OFDM symbol that the interference is deleted is performed in subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
It is described to determine the RSSI for measuring subframe, including：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is performs
The interference delete after second group of OFDM symbol.
With reference to first aspect or first aspect the first, second or the third possible realization method, at the 4th kind
In possible realization method, the interference signal, including：
Cell-level reference signal CRS interference signals, Physical Broadcast Channel PBCH interference signals, primary synchronization signal PSS interference
At least one of signal and auxiliary synchronization channel SSS interference signals interference signal.
With reference to first aspect or first aspect the first, second, the third or the 4th kind of possible realization method,
It is described to determine the RSSI for measuring subframe in 5th kind of possible realization method, including：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
Calculate being averaged for the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe
Value, determines the RSSI.
With reference to first aspect or first aspect the first, second, the third, the 4th kind or the 5th kind of possible realization
Mode, in the 6th kind of possible realization method, described obtain measures subframe, including：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling,
Determine the measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the subframe collection received
The measurement subframe is selected in conjunction.
Second aspect provides a kind of user equipment, including：
Acquisition module measures subframe for obtaining, wherein, the measurement subframe includes interference signal；
Control module, for determining the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is
It is determined based on the measurement subframe performed after interfering deletion, it is dry in the deletion measurement subframe that the interference, which is deleted,
Disturb signal.
In the first possible realization method of second aspect, the control module is additionally operable to：
Before the RSSI for measuring subframe is determined, institute is performed to the interference signal included in the measurement subframe
Interference is stated to delete；
The control module, specifically for using required meter in the measurement subframe performed after the interference is deleted
The OFDM symbol of calculation calculates the RSSI, wherein, it is described needed for after the OFDM symbol that calculates deleted to perform the interference
The measurement subframe in all orthogonal frequency division multiplex OFDM symbols.
According to second aspect, in second of possible realization method, the control module is specifically used for：
Determine first group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, first group of OFDM symbol is institute
It states and measures in subframe, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol is the measurement subframe
In to perform it is described interference delete OFDM symbol；
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is described
First group of OFDM symbol.
According to second aspect, in the third possible realization method, the control module is additionally operable to：
Before the RSSI for measuring subframe is determined, second group of Orthogonal Frequency Division Multiplexing in the measurement subframe is determined
OFDM symbol, the OFDM symbol that second group of OFDM symbol is deleted to perform the interference in the measurement subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
The control module, is specifically used for：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is performs
The interference delete after second group of OFDM symbol.
With reference to the first of second aspect or second aspect, second or the third possible realization method, at the 4th kind
In possible realization method, the control module is specifically additionally operable to：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
Calculate being averaged for the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe
Value, determines the RSSI.
With reference to the first of second aspect or second aspect, second, the third or the 4th kind of possible realization method,
In 5th kind of possible realization method, the acquisition module is specifically used for：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling,
Determine the measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the subframe collection received
The measurement subframe is selected in conjunction.
The third aspect provides a kind of user equipment, including：
Processor measures subframe for obtaining, wherein, the measurement subframe includes interference signal；
The processor is additionally operable to determine the received signal strength indicator value RSSI for measuring subframe, wherein, it is described
RSSI is determined based on the measurement subframe performed after interfering deletion, and the interference is deleted as the deletion measurement subframe
In interference signal.
In the first possible realization method of the third aspect, the processor is additionally operable to：
Before the RSSI for measuring subframe is determined, institute is performed to the interference signal included in the measurement subframe
Interference is stated to delete；
The processor, specifically for using required calculating in the measurement subframe performed after the interference is deleted
OFDM symbol calculate the RSSI, wherein, it is described needed for the OFDM symbol that calculates be to perform after the interference deletes
All orthogonal frequency division multiplex OFDM symbols in the measurement subframe.
According to the third aspect, in second of possible realization method, the processor is specifically used for：
Determine first group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, first group of OFDM symbol is institute
It states and measures in subframe, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol is the measurement subframe
In to perform it is described interference delete OFDM symbol；
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is described
First group of OFDM symbol.
According to the third aspect, in the third possible realization method, the processor is additionally operable to：
Before the RSSI for measuring subframe is determined, second group of Orthogonal Frequency Division Multiplexing in the measurement subframe is determined
OFDM symbol, the OFDM symbol that second group of OFDM symbol is deleted to perform the interference in the measurement subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
The processor, is specifically used for：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is performs
The interference delete after second group of OFDM symbol.
With reference to the first of the third aspect or the third aspect, second or the third possible realization method, at the 4th kind
In possible realization method, the processor is specifically additionally operable to：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
Calculate being averaged for the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe
Value, determines the RSSI.
With reference to the first of the third aspect or the third aspect, second, the third or the 4th kind of possible realization method,
In 5th kind of possible realization method, the processor is specifically additionally operable to：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling,
Determine the measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the subframe collection received
The measurement subframe is selected in conjunction.
The acquisition methods and user equipment of received signal strength indicator value provided by the invention are done by obtaining to include first
The measurement subframe of signal is disturbed, then RSSI is determined based on the measurement subframe after interference is deleted is performed, UE can be improved and measure RSSI
The accuracy of value, and then improve the accuracy for measuring RSRQ values.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow chart of the acquisition methods embodiment one of received signal strength indicator value provided by the invention；
Fig. 2A is the resource distribution schematic diagram of normal sub-frames in embodiment illustrated in fig. 1；
Fig. 2 B are the resource distribution schematic diagram of ABS subframes in embodiment illustrated in fig. 1；
Fig. 3 is the flow chart of the acquisition methods embodiment two of received signal strength indicator value provided by the invention；
Fig. 4 is the flow chart of the acquisition methods embodiment three of received signal strength indicator value provided by the invention；
Fig. 5 is the flow chart of the acquisition methods example IV of received signal strength indicator value provided by the invention；
Fig. 6 is the structure diagram of user equipment embodiment one provided by the invention；
Fig. 7 is the structure diagram of user equipment embodiment two provided by the invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
Fig. 1 is the flow chart of the acquisition methods embodiment one of received signal strength indicator value provided by the invention, such as Fig. 1 institutes
Show, the acquisition methods of the received signal strength indicator value of the present embodiment, including：
S101, measurement subframe is obtained, wherein, it measures subframe and includes interference signal.
It can be measurement object when UE carries out RRM measurements to measure subframe, and specifically, UE can be with base in demodulated signal
In above-mentioned measurement subframe carry out RRM measurements in RSSI value measurement, UE obtain measure subframe mode can according to UE whether
It receives the high-level signaling for the measurement sub-frame set for being used to indicate RSRQ that base station issues and is divided into two kinds：First, if UE receives base
The high-level signaling for the measurement sub-frame set for being used to indicate RSRQ sent of standing then according to the high-level signaling, determines to measure subframe；Two
If it is the high-level signaling for being used to indicate RSRQ and measuring sub-frame set that UE does not receive base station transmission, from the subframe collection received
Selection measures subframe in conjunction.
S102, it determines to measure the received signal strength indicator value RSSI of subframe, wherein, RSSI is deleted based on performing interference
What the measurement subframe after removing determined, interference is deleted to delete the interference signal measured in subframe.
The executive agent of the present embodiment can be UE.
The present embodiment in LTE to introduce to reduce the quasi- blank subframe of interference of the macro base station to micro-base station CRE UE
（Almost Blank Subframe, abbreviation ABS）Technology is background, and it is ABS which, which refers to that a part of subframe is configured in macro base station,
Subframe, the only transmitting portion channel in ABS subframes, and micro-base station CRE UE are by the scheduled ABS subframes corresponding to macro base station
In subframe, interference of the macro base station to micro-base station CRE UE can be reduced.
Fig. 2A is the resource distribution schematic diagram of normal sub-frames in embodiment illustrated in fig. 1, and Fig. 2 B are in embodiment illustrated in fig. 1
The resource distribution schematic diagram of ABS subframes, as shown in Figure 2 A and 2B, normal sub-frames can include Physical Downlink Control Channel
（Physical Downlink Control Channel, abbreviation PDCCH）/ Physical Control Format Indicator Channel (Physical
Control Format Indicator Channel, abbreviation PCFICH)/Physical HARQ Indicator Channel (Physical HARQ
Indicator Channel, PHICH)/Physical Downlink Shared Channel（Physical Downlink Shared Channel, letter
Claim PDSCH）Wait useful signals and cell-level reference signal（Cell-specific Reference Signal, abbreviation CRS）、
Physical Broadcast Channel（Physical Broadcast Channel, abbreviation PBCH）Signal, primary/secondary synchronizing signal (Primary/
Secondly synchronization Signal, abbreviation PSS/SSS) etc. interference signals, and in ABS subframes then only include CRS
The interference signals such as signal, PBCH signals, PSS/SSS.
In order to further reduce interference of the residual signal in ABS subframes to UE, interference is introduced in LTE and is deleted
（Interference Cancelling, abbreviation IC）Technology to promote the performance of micro-base station CRE UE, interference deleting technique according to
The difference for the interference signal deleted can be divided into CRS-IC, PBCH-IC and PSS/SSS-IC, following by taking CRS-IC as an example,
Interference deleting technique is illustrated：Signal is configured according to the CRS of adjacent cell in UE, can estimate the CRS transmitting symbols of adjacent cell,
Symbol is emitted according to the CRS of adjacent cell, channel estimation is carried out to adjacent cell, recovered further according to CRS transmitting symbols and estimation channel
Adjacent cell CRS reaches the interference signal of UE, and the CRS interference signals of adjacent cell are finally subtracted inside the resultant signal that UE is received.
In Current standards realization, measurements and calculating of the UE to RSSI are not directed to interference and delete to signal in subframe
It influences, i.e., the RSSI value that the prior art is measured contains the interference signal being deleted, leads to over-evaluating for RSSI, institute
It is often inaccurate with the RSSI value measured.
In the case that the present embodiment then includes interference signal in subframe is measured, based on the survey performed after interference is deleted
Quantum frame determines to measure the RSSI of subframe.
It is understood that if UE does not perform interference deletion to measuring subframe, measurement of the prior art may be used
Method measures RSSI.
Wherein, UE is to measuring whether subframe performs interference delete operation, depending on UE is when being demodulated in the measurement subframe
It is no to perform interference delete operation.For example, UE, which performs CRS interference when demodulating PDSCH channels in the measurement subframe, deletes behaviour
Make, then UE will be based on the measurement subframe performed after interference is deleted when carrying out rssi measurement in the measurement subframe；If
UE is not carried out interference delete operation when being demodulated in the measurement subframe, then UE does not also perform the measurement subframe interference and deletes
Operation, measures RSSI value using measuring method of the prior art.
It should be noted that based in the measurement subframe performed after interference is deleted, described perform interferes deletion
Measurement subframe afterwards can the measurement subframe that interference deletion obtains be carried out in data demodulation or when RRM is measured
Obtained measurement subframe is deleted in the interference of progress.
Therefore, it can be held before measurement subframe is obtained to be mentioned in subsequent embodiment and perform the step of interference is deleted
It goes or is performed after measurement subframe is obtained and before the determining received signal strength indicator value RSSI for measuring subframe,
The embodiment of the present invention does not limit this.
Further, it based on the measurement subframe performed after interference is deleted, after the RSSI for determining measurement subframe, goes back
Can RSRQ be obtained, and RSRQ is sent to base station according to the RSSI determined.
The acquisition methods of received signal strength indicator value provided in this embodiment, by being obtained first comprising interference signal
Subframe is measured, then RSSI is determined based on the measurement subframe after interference is deleted is performed, UE can be improved and measure the accurate of RSSI value
Degree, and then improve the accuracy for measuring RSRQ values.
Fig. 3 is the flow chart of the acquisition methods embodiment two of received signal strength indicator value provided by the invention, such as Fig. 3 institutes
Show, the acquisition methods of the received signal strength indicator value of the present embodiment, including：
S201, measurement subframe is obtained, wherein, it measures subframe and includes interference signal.
S202, interference deletion is performed to measuring the interference signal included in subframe.
Specifically, interference is performed to measuring the interference signal that includes in subframe to delete, can include to CRS signals,
One or more of interference signals such as PBCH signals, PSS signals or SSS signals perform interference and delete.
S203, RSSI is calculated using the OFDM symbol of required calculating in the measurement subframe performed after interference is deleted,
In, the OFDM symbol of required calculating is all orthogonal frequency division multiplex OFDM symbols in the measurement subframe performed after interference is deleted
Number.
The executive agent of the present embodiment can be UE.
Specifically, using all Orthogonal Frequency Division Multiplexing in the measurement subframe performed after interference is deleted
（Orthogonal Frequency Division Multiplexing, abbreviation OFDM）Sign computation RSSI can be according to UE
The high-level signaling of the no measurement sub-frame set for being used to indicate RSRQ for receiving base station transmission is divided into two kinds：First, if UE is received
The high-level signaling for the measurement sub-frame set for being used to indicate RSRQ that base station is sent, the measurement sub-frame set of RSRQ can be ABS
The subset of frame then calculates and performs the sum of power of all OFDM symbols in the measurement subframe after interference is deleted, determines RSSI；
If UE do not receive base station transmission the measurements sub-frame set for being used to indicate RSRQ high-level signaling, calculate interference deletion after
Measurement subframe in the corresponding measurement subframe performed after interference is deleted of antenna port 0 all OFDM symbols power
Average value determines RSSI.
Optionally, can also RSRQ be obtained, and RSRQ is sent to base station according to the above-mentioned RSSI calculated.
The acquisition methods of received signal strength indicator value provided in this embodiment, by being wrapped in the measurement subframe to getting
The interference signal contained performs interference and deletes, and using the OFDM symbols of required calculating in the measurement subframe performed after interference is deleted
Number calculate RSSI, can improve UE measure RSSI value accuracy, and then improve measure RSRQ values accuracy.
Fig. 4 is the flow chart of the acquisition methods embodiment three of received signal strength indicator value provided by the invention, such as Fig. 4 institutes
Show, the acquisition methods of the received signal strength indicator value of the present embodiment, including：
S301, measurement subframe is obtained, wherein, it measures subframe and includes interference signal.
S302, it determines to measure first group of orthogonal frequency division multiplex OFDM symbol in subframe, first group of OFDM symbol is measures
In subframe, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol is deleted to perform interference in measurement subframe
The OFDM symbol removed.
Specifically, UE to measuring subframe when being demodulated, it may be determined that the type of interference signal in the measurement subframe,
And the type for the interference signal that interference is deleted is performed, and determine to measure the interference signal that perform interference deletion in subframe
OFDM symbol, first group of OFDM symbol is the OFDM in addition to comprising the OFDM symbol that perform the interference signal that interference is deleted
Symbol.
For example, it if UE to measuring subframe when being demodulated, determines in the measurement subframe only comprising CRS interference letters
Number, and CRS-IC will be performed, then above-mentioned first group of OFDM symbol can not include interference signal in the measurement subframe
OFDM symbol；If UE determines to measure comprising two kinds of interference signals of CRS and PBCH in subframe, and will perform CRS-IC, then
Above-mentioned first group of OFDM symbol can be that the OFDM symbol in the measurement subframe not comprising interference signal is interfered with PBCH is included
The OFDM symbol of signal.
S303, RSSI is calculated using the OFDM symbol of required calculating, wherein, the OFDM symbol of required calculating is first group
OFDM symbol.
The executive agent of the present embodiment can be UE.
Specifically, calculate whether RSSI can receive being used for for base station transmission according to UE using first group of OFDM symbol
Indicate that the high-level signaling of the measurement sub-frame set of RSRQ is divided into two kinds：If when UE receive base station transmission be used to indicate RSRQ
Measurement sub-frame set high-level signaling, then calculate the sum of power of first group of OFDM symbol, determine RSSI；If UE is not received
The high-level signaling for the measurement sub-frame set for being used to indicate RSRQ that base station is sent then calculates antenna port 0 in measurement subframe and corresponds to
First group of OFDM symbol power average value, determine RSSI.
The acquisition methods of received signal strength indicator value provided in this embodiment, it is first determined go out to measure first in subframe
Group OFDM symbol, first group of OFDM symbol is measures in subframe, the OFDM symbol in addition to second group of OFDM symbol, second group
OFDM symbol is to measure to perform the OFDM symbol that interference is deleted in subframe, then calculate RSSI using first group of OFDM symbol, can
To improve the accuracy that UE measures RSSI value, and then improve the accuracy for measuring RSRQ values.
Fig. 5 is the flow chart of the acquisition methods example IV of received signal strength indicator value provided by the invention, such as Fig. 5 institutes
Show, the acquisition methods of the received signal strength indicator value of the present embodiment, including：
S401, measurement subframe is obtained, wherein, it measures subframe and includes interference signal.
S402, it determines to measure second group of orthogonal frequency division multiplex OFDM symbol in subframe, second group of OFDM symbol is measures
The OFDM symbol that interference is deleted is performed in subframe.
Specifically, UE to measuring subframe when being demodulated, it may be determined that the type of interference signal in the measurement subframe,
And the type for the interference signal that interference is deleted is performed, and determine to measure the interference signal that perform interference deletion in subframe
OFDM symbol, second group of OFDM symbol will perform the OFDM symbol for the interference signal that interference is deleted to include.
For example, if UE determines that CRS-IC will be performed, then above-mentioned second group when being demodulated to measuring subframe
OFDM can measure the OFDM symbol for including CRS interference signals in subframe；If it is determined that PBCH-IC will be performed, then it is above-mentioned
Second group of OFDM can measure the OFDM symbol for including PBCH interference signals in subframe.
S403, interference deletion is performed to the interference signal in second group of OFDM symbol.
S404, RSSI is calculated using the OFDM symbol of required calculating, wherein, the OFDM symbol of required calculating is dry to perform
Disturb second group of OFDM symbol after deleting.
The executive agent of the present embodiment can be UE.
Specifically, using perform interference delete after second group of OFDM symbol calculate RSSI can according to UE whether
The high-level signaling for receiving the measurement sub-frame set for being used to indicate RSRQ of base station transmission is divided into two kinds：First, if UE receives base
The high-level signaling for the measurement sub-frame set for being used to indicate RSRQ sent of standing then calculates second group after interference delete operation
The sum of power of OFDM symbol determines RSSI；If UE does not receive the measurement sub-frame set for being used to indicate RSRQ of base station transmission
High-level signaling, then calculate measure subframe in antenna port 0 it is corresponding perform interference delete after second group of OFDM symbol
Power average value, determine RSSI.
The acquisition methods of received signal strength indicator value provided in this embodiment, it is first determined measure second group in subframe
OFDM symbol, second group of OFDM symbol is to measure to perform the OFDM symbol that interference is deleted in subframe, to second group of OFDM symbol
On interference signal perform interference delete, then using perform interference delete after second group of OFDM symbol calculate RSSI, can
To improve the accuracy that UE measures RSSI value, and then improve the accuracy for measuring RSRQ values.
Fig. 6 is the structure diagram of user equipment embodiment one provided by the invention, as shown in fig. 6, the use of the present embodiment
Family equipment, including acquisition module 61 and control module 62, wherein, acquisition module 61 measures subframe for obtaining, wherein, measure son
Frame includes interference signal；Control module 62 is used for the received signal strength indicator value RSSI for determining to measure subframe, wherein, RSSI is
Based on performing what the measurement subframe after interference is deleted determined, interference is deleted to delete the interference signal measured in subframe.
Further, acquisition module 61 specifically can be used for：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to high-level signaling, determine
Subframe is measured, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the subframe collection received
Selection measures subframe in conjunction.
Further, control module 62 can be also used for according to interference delete operation, after determining RSSI, according to
RSSI obtains Reference Signal Received Quality RSRQ, and RSRQ is sent to base station.
The user equipment of the present embodiment can be used for performing the technical solution of embodiment of the method shown in Fig. 1, realization principle
Similar with technique effect, details are not described herein again.
In user equipment embodiment two provided by the invention, further, on the basis of embodiment shown in Fig. 6, control
Module 62 can be also used for before the RSSI for determining to measure subframe, be deleted to measuring the interference signal included in subframe execution interference
It removes；
Control module 62 specifically can be used for using required calculating in the measurement subframe performed after interference is deleted
OFDM symbol calculates RSSI, wherein, the OFDM symbol of required calculating is to own in the measurement subframe performed after interference is deleted
Orthogonal frequency division multiplex OFDM symbol.
If control module 62 specifically can be also used for the measurement subframe collection for being used to indicate RSRQ that UE receives base station transmission
The high-level signaling of conjunction then calculates and performs the sum of power of all OFDM symbols in the measurement subframe after interference is deleted, determines
RSSI；If UE does not receive the high-level signaling of the measurement sub-frame set for being used to indicate RSRQ of base station transmission, measurement is calculated
The average value of the corresponding power for performing all OFDM symbols after interference is deleted of frame antenna port 0, determines RSSI.
The user equipment of the present embodiment can be used for performing the technical solution of embodiment of the method shown in Fig. 3, realization principle
Similar with technique effect, details are not described herein again.
In user equipment embodiment three provided by the invention, further, on the basis of embodiment shown in Fig. 6, control
Module 62 specifically can be used for：
It determines to measure first group of orthogonal frequency division multiplex OFDM symbol in subframe, first group of OFDM symbol is measures subframe
In, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol is to measure to perform what interference was deleted in subframe
OFDM symbol；
RSSI is calculated using the OFDM symbol of required calculating, wherein, the OFDM symbol of required calculating is accorded with for first group of OFDM
Number.
If control module 62 specifically can be also used for the measurement subframe collection for being used to indicate RSRQ that UE receives base station transmission
The high-level signaling of conjunction then calculates the sum of power of first group of OFDM symbol, determines RSSI；If UE does not receive the use of base station transmission
In the high-level signaling of the measurement sub-frame set of instruction RSRQ, then calculate and measure 0 corresponding first group of OFDM of antenna port in subframe
The average value of the power of symbol, determines RSSI.
The user equipment of the present embodiment can be used for performing the technical solution of embodiment of the method shown in Fig. 4, realization principle
Similar with technique effect, details are not described herein again.
In user equipment example IV provided by the invention, further, on the basis of embodiment shown in Fig. 6, control
Module 62 specifically can be also used for：
Before the RSSI for determining to measure subframe, determine to measure second group of orthogonal frequency division multiplex OFDM symbol in subframe,
Second group of OFDM symbol is to measure to perform the OFDM symbol that interference is deleted in subframe；And
Interference is performed to the interference signal in second group of OFDM symbol to delete；
RSSI is calculated using second group of OFDM symbol after interference delete operation.
Control module 62 is specifically used for calculating RSSI using the OFDM symbol of required calculating, wherein, the OFDM of required calculating
Symbol is the second group of OFDM symbol performed after interference is deleted.
If control module 62 specifically can be also used for the measurement subframe collection for being used to indicate RSRQ that UE receives base station transmission
The high-level signaling of conjunction, then calculating perform the sum of power of second group of OFDM symbol after interference is deleted, determine RSSI；If UE
The high-level signaling of the measurement sub-frame set for being used to indicate RSRQ of base station transmission is not received, then calculates and measure antenna end in subframe
The average value of the corresponding power for performing second group of OFDM symbol after interference is deleted of mouth 0, determines RSSI.
The user equipment of the present embodiment can be used for performing the technical solution of embodiment of the method shown in Fig. 5, realization principle
Similar with technique effect, details are not described herein again.
Fig. 7 is the structure diagram of user equipment embodiment two provided by the invention, as shown in fig. 7, the present embodiment provides
User equipment include：At least one processor 701, at least one RF（Radio Frequency, radio frequency, abbreviation RF）Circuit
710 and at least one processor 720.Optionally, can also include：Chip 702, I/O（Input/Output, input/defeated
Go out, abbreviation I/O）Subsystem 703, voicefrequency circuit 704, external interface 705, Memory Controller and operating system etc..Processing
Device 720 such as can be central processor CPU（Central Processing Unit, abbreviation CPU）.
Said modules are communicated by one or more communication bus or signal wire, and user equipment can include but unlimited
In mobile phone or tablet computer etc..Each component shown in Fig. 7 can be realized with the combination of hardware, software or software and hardware, be wrapped
Include one or more signal processings and/or application-specific integrated circuit.Memory 701 may include high-speed random access memory, it is non-easily
The property lost solid state memory device etc..Memory Controller can control other components such as the processor of user equipment to memory
701 access, each module in memory 701 to be called to perform corresponding function.
Processor 720 measures subframe for obtaining, wherein, it measures subframe and includes interference signal；
Processor 720 is additionally operable to the received signal strength indicator value RSSI for determining to measure subframe, wherein, RSSI is to be based on
Perform what the measurement subframe after interference is deleted determined, interference is deleted to delete the interference signal measured in subframe.
Further, processor 720 are additionally operable to：
Before the RSSI for determining to measure subframe, delete measuring the interference signal included in subframe execution interference；
Processor 720 is additionally operable to the OFDM symbol using required calculating in the measurement subframe performed after interference is deleted
RSSI is calculated, wherein, the OFDM symbol of required calculating is all orthogonal frequencies in the measurement subframe performed after interference is deleted
It is multiplexed OFDM symbol.
Further, processor 720 are specifically additionally operable to：
It determines to measure first group of orthogonal frequency division multiplex OFDM symbol in subframe, first group of OFDM symbol is measures subframe
In, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol is to measure to perform what interference was deleted in subframe
OFDM symbol；
RSSI is calculated using the OFDM symbol of required calculating, wherein, the OFDM symbol of required calculating is accorded with for first group of OFDM
Number.
Further, processor 720 are additionally operable to：
Before the RSSI for determining to measure subframe, determine to measure second group of orthogonal frequency division multiplex OFDM symbol in subframe,
Second group of OFDM symbol is to measure to perform the OFDM symbol that interference is deleted in subframe；And
Interference is performed to the interference signal in second group of OFDM symbol to delete；
Processor 720, specifically for calculating RSSI using the OFDM symbol of required calculating, wherein, the OFDM of required calculating
Symbol is the second group of OFDM symbol performed after interference is deleted.
Further, processor 720 are additionally operable to：
It calculates and measures the sum of power of OFDM symbol of required calculating in subframe, determine RSSI, alternatively,
The average value for the power for measuring the corresponding required OFDM symbol calculated of antenna port 0 in subframe is calculated, is determined
RSSI。
Further, processor 720 are specifically additionally operable to：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to high-level signaling, determine
Subframe is measured, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the subframe collection received
Selection measures subframe in conjunction.
Optionally, processor 720 can be also used for：
According to delete operation is interfered, after determining RSSI, according to RSSI, Reference Signal Received Quality RSRQ is obtained, and
RSRQ is sent to base station.
Involved part or all of message in the present embodiment, the generation of the message can be by the processor of user equipment
720 or other component/module or processor 720 realized with reference to other component/module.
User equipment provided in this embodiment can be used for performing any shown embodiments of the method for Fig. 1 and Fig. 3~Fig. 5
UE corresponds to the part performed in technical solution, and implementing principle and technical effect are similar, and details are not described herein again.Fig. 7 is only this hair
A kind of schematic diagram of the structure of the user equipment of bright offer, concrete structure can be according to being actually adjusted.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and aforementioned program can be stored in a computer read/write memory medium, the program
When being executed, step including the steps of the foregoing method embodiments is performed；And aforementioned storage medium includes：ROM, RAM, magnetic disc or light
The various media that can store program code such as disk.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (20)
1. a kind of acquisition methods of received signal strength indicator value, which is characterized in that including：
It obtains and measures subframe, wherein, the measurement subframe includes interference signal；And
Determine the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is deleted based on performing interference
What the measurement subframe after removing determined, the interference is deleted to delete the interference signal measured in subframe；
Before the RSSI for determining the measurement subframe, the method further includes：
The interference is performed to the interference signal included in the measurement subframe to delete；
It is described to determine the RSSI for measuring subframe, including：
The RSSI is calculated using the OFDM symbol of required calculating in the measurement subframe performed after the interference is deleted,
Wherein, the required OFDM symbol calculated is all orthogonal frequencies in the measurement subframe performed after the interference is deleted
Divide multiplexing OFDM symbol.
2. according to the method described in claim 1, it is characterized in that, the interference signal, including：
Cell-level reference signal CRS interference signals, Physical Broadcast Channel PBCH interference signals, primary synchronization signal PSS interference signals,
And at least one of auxiliary synchronization channel SSS interference signals interference signal.
3. method according to claim 1 or 2, which is characterized in that it is described to determine the RSSI for measuring subframe, including：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, really
The fixed RSSI.
4. method according to claim 1 or 2, which is characterized in that described obtain measures subframe, including：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling, determine
The measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the sub-frame set received
Select the measurement subframe.
5. a kind of acquisition methods of received signal strength indicator value, which is characterized in that including：
It obtains and measures subframe, wherein, the measurement subframe includes interference signal；And
Determine the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is deleted based on performing interference
What the measurement subframe after removing determined, the interference is deleted to delete the interference signal measured in subframe；
Before the RSSI for determining the measurement subframe, the method further includes：
Determine second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, second group of OFDM symbol is the survey
The OFDM symbol that the interference is deleted is performed in quantum frame；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
It is described to determine the RSSI for measuring subframe, including：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is performs
State second group of OFDM symbol after interference is deleted.
6. according to the method described in claim 5, it is characterized in that, the interference signal, including：
Cell-level reference signal CRS interference signals, Physical Broadcast Channel PBCH interference signals, primary synchronization signal PSS interference signals,
And at least one of auxiliary synchronization channel SSS interference signals interference signal.
7. method according to claim 5 or 6, which is characterized in that it is described to determine the RSSI for measuring subframe, including：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, really
The fixed RSSI.
8. method according to claim 5 or 6, which is characterized in that described obtain measures subframe, including：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling, determine
The measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the sub-frame set received
Select the measurement subframe.
9. a kind of user equipment, which is characterized in that including：
Acquisition module measures subframe for obtaining, wherein, the measurement subframe includes interference signal；
Control module, for determining the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is to be based on
Perform what the measurement subframe after interference is deleted determined, the interference is deleted to delete the interference letter measured in subframe
Number；
The control module, is additionally operable to：
Before the RSSI for measuring subframe is determined, the interference signal included in the measurement subframe is performed described dry
Disturb deletion；
The control module, specifically for using required calculating in the measurement subframe performed after the interference is deleted
OFDM symbol calculates the RSSI, wherein, the required OFDM symbol calculated is the institute performed after the interference is deleted
It states and measures all orthogonal frequency division multiplex OFDM symbols in subframe.
10. user equipment according to claim 9, which is characterized in that the control module is specifically additionally operable to：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, really
The fixed RSSI.
11. user equipment according to claim 9 or 10, which is characterized in that the acquisition module is specifically used for：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling, determine
The measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the sub-frame set received
Select the measurement subframe.
12. a kind of user equipment, which is characterized in that including：
Acquisition module measures subframe for obtaining, wherein, the measurement subframe includes interference signal；
Control module, for determining the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is to be based on
Perform what the measurement subframe after interference is deleted determined, the interference is deleted to delete the interference letter measured in subframe
Number；
The control module, is additionally operable to：
Before the RSSI for measuring subframe is determined, second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined
Number, the OFDM symbol that second group of OFDM symbol is deleted to perform the interference in the measurement subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
The control module, is specifically used for：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is performs
State second group of OFDM symbol after interference is deleted.
13. user equipment according to claim 12, which is characterized in that the control module is specifically additionally operable to：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, really
The fixed RSSI.
14. user equipment according to claim 12 or 13, which is characterized in that the acquisition module is specifically used for：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling, determine
The measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the sub-frame set received
Select the measurement subframe.
15. a kind of user equipment, which is characterized in that including：
Processor measures subframe for obtaining, wherein, the measurement subframe includes interference signal；
The processor is additionally operable to determine the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is
It is determined based on the measurement subframe performed after interfering deletion, it is dry in the deletion measurement subframe that the interference, which is deleted,
Disturb signal；
The processor, is additionally operable to：
Before the RSSI for measuring subframe is determined, the interference signal included in the measurement subframe is performed described dry
Disturb deletion；
The processor, specifically for using required calculating in the measurement subframe performed after the interference is deleted
OFDM symbol calculates the RSSI, wherein, the required OFDM symbol calculated is the institute performed after the interference is deleted
It states and measures all orthogonal frequency division multiplex OFDM symbols in subframe.
16. user equipment according to claim 15, which is characterized in that the processor is specifically additionally operable to：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, really
The fixed RSSI.
17. user equipment according to claim 15 or 16, which is characterized in that the processor is specifically additionally operable to：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling, determine
The measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the sub-frame set received
Select the measurement subframe.
18. a kind of user equipment, which is characterized in that including：
Processor measures subframe for obtaining, wherein, the measurement subframe includes interference signal；
The processor is additionally operable to determine the received signal strength indicator value RSSI for measuring subframe, wherein, the RSSI is
It is determined based on the measurement subframe performed after interfering deletion, it is dry in the deletion measurement subframe that the interference, which is deleted,
Disturb signal；
The processor, is additionally operable to：
Before the RSSI for measuring subframe is determined, second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined
Number, the OFDM symbol that second group of OFDM symbol is deleted to perform the interference in the measurement subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
The processor, is specifically used for：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is performs
State second group of OFDM symbol after interference is deleted.
19. user equipment according to claim 18, which is characterized in that the processor is specifically additionally operable to：
The sum of power of OFDM symbol of required calculating described in the measurement subframe is calculated, determines the RSSI, alternatively,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, really
The fixed RSSI.
20. the user equipment according to claim 18 or 19, which is characterized in that the processor is specifically additionally operable to：
If receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, according to the high-level signaling, determine
The measurement subframe, alternatively,
If do not receive base station transmission is used to indicate the high-level signaling for measuring sub-frame set, from the sub-frame set received
Select the measurement subframe.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/084036 WO2014067145A1 (en) | 2012-11-02 | 2012-11-02 | Method and user equipment for acquiring received signal strength indicator |
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| Publication Number | Publication Date |
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| CN104067661A CN104067661A (en) | 2014-09-24 |
| CN104067661B true CN104067661B (en) | 2018-06-19 |
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| CN1790958A (en) * | 2004-12-17 | 2006-06-21 | 中兴通讯股份有限公司 | Receiving signal intensity indication signal detecting device and its method |
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| US20080056220A1 (en) * | 2006-08-30 | 2008-03-06 | Motorola, Inc. | System and method for determining a carrier to interference noise ratio |
| CN101287275B (en) * | 2007-04-11 | 2011-05-11 | 中兴通讯股份有限公司 | Method for measuring interference of adjacent cell in downlink direction based on CDMA system |
| EP2665333A4 (en) * | 2011-01-11 | 2017-09-06 | Ntt Docomo, Inc. | User device, and measurement device |
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