CN104067661A - Method and user equipment for acquiring received signal strength indicator - Google Patents

Method and user equipment for acquiring received signal strength indicator Download PDF

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Publication number
CN104067661A
CN104067661A CN201280047990.3A CN201280047990A CN104067661A CN 104067661 A CN104067661 A CN 104067661A CN 201280047990 A CN201280047990 A CN 201280047990A CN 104067661 A CN104067661 A CN 104067661A
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ofdm symbol
interference
measurement subframe
rssi
subframe
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CN104067661B (en
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吴海
程型清
戴喜增
吴彤
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

Embodiments of the present invention provide a method and a user equipment for acquiring a received signal strength indicator (RSSI). The method comprises: acquiring a measurement subframe, the measurement subframe comprising an interference signal; and determining an RSSI of the measurement subframe, the RSSI being determined on the basis of the measurement subframe undergoing interference deletion, and the interference deletion being deleting the interference signal in the measurement subframe. Through the technical solutions of the present invention, the measurement subframe comprising the interference signal is first acquired, and then the RSSI is determined on the basis of a measurement subframe undergoing interference deletion, thereby improving the accuracy of measuring the RSSI value by the UE, and further enhancing the accuracy of measuring the RSRQ value.

Description

Method and user equipment for acquiring received signal strength indicator
The acquisition methods and user equipment technical field of received signal strength indicator value
The present embodiments relate to the communication technology, more particularly to a kind of acquisition methods and user equipment of received signal strength indicator value.Background technology
For lifting system performance, in Long Term Evolution（Long Term Evolution, abbreviation LTE) system heterogeneous network（Heterogeneous Network, abbreviation HetNet) in, introduce cell serves scope extension (Cell Range Extension, abbreviation CRE) technology.CRE technologies refer to service user can by by force from the weak micro-base station of the strong macro base station switching in signal of signal so that micro-base station can the moon the good more user equipmenies of business（User Equipment, abbreviation UE), this class is referred to as to the C RE 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 systems, UE can carry out RRM in demodulated signal（Radio Resource Management, abbreviation RRM) measurement, for example 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 the basis for estimation that UE carries out cell reselection or cell switching.Wherein, RSRP can be defined as in specified Measurement bandwidth, all carrying cell-level reference signals（Cell-specific Reference Signal, abbreviation CRS) reference signal resource location on power linear average, RSRQ can be defined as Ν χ RSRP/RSSI, and N represents to carry out received signal strength indicator（Received Signal Strength Indicator, abbreviation RS SI) measurement when resource block number.
But in the prior art, the RSSI value that CRE UE are measured is often inaccurate, and then cause the RSRQ values of measurement inaccurate.The content of the invention
The present invention provides a kind of acquisition methods and user equipment of received signal strength indicator value, to improve UE The degree of accuracy of RSSI value is measured, and then improves the accuracy of measurement RSRQ values.
First aspect there is provided a kind of acquisition methods of received signal strength indicator value, including：Measurement subframe is obtained, wherein, the measurement subframe includes interference signal；And
The received signal strength indicator value RSSI of the measurement subframe is determined, wherein, the RSSI is determined based on the measurement subframe performed after interference deletion, and the interference deletes to delete the interference signal measured in subframe.
In the first possible implementation of first aspect, the determination measurement subframe
Before RSSI, methods described also includes：
The interference is performed to the interference signal included in the measurement subframe to delete；The RSSI for determining the measurement subframe, including：
Using RSSI described in the OFDM sign computations calculated needed for the measurement subframe performed after the interference is deleted, wherein, the required OFDM symbol calculated is to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after the interference is deleted.
According in a first aspect, in second of possible implementation, the RSSI for determining the measurement subframe, including：
First group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, first group of OFDM symbol is measured in subframe to be described, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol will perform what the interference was deleted for described measure in subframe
OFDM symbol；
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required calculating
OFDM symbol is first group of OFDM symbol.
According in a first aspect, in the third possible implementation, before the RSSI for determining the measurement subframe, methods described also includes：
Second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；The RSSI for determining the measurement subframe, including：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required calculating With reference to first aspect or first aspect the first, second or the third possible implementation, in the 4th kind of possible implementation, the interference signal, including：
Cell-level reference signal CRS interference signals, Physical Broadcast Channel PBCH interference signals, master sync signal PSS interference signals, and at least one of 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 implementation, in the 5th kind of possible implementation, the RSSI for determining the measurement subframe, including：
The power sum of the OFDM symbol calculated needed for described in the measurement subframe is calculated, the RSSI is determined, or,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, the RSSI is determined.
With reference to first aspect or first aspect the first, second, the third, the 4th kind or the 5th kind of possible implementation, in the 6th kind of possible implementation, it is described obtain measurement subframe, including：
If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to the high-level signaling, the measurement subframe is determined, or,
If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the measurement subframe is selected from the sub-frame set received.
Second aspect there is provided a kind of user equipment, including：
Acquisition module, for obtaining measurement subframe, wherein, the measurement subframe includes interference signal；Control module, received signal strength indicator value RSSI for determining the measurement subframe, wherein, the RSSI is determined based on the measurement subframe performed after interference deletion, and the interference deletes to delete the interference signal measured in subframe.
In the first possible implementation of second aspect, the control module is additionally operable to：It is determined that before the RSSI of the measurement subframe, performing the interference to the interference signal included in the measurement subframe and deleting；
The control module, specifically for calculating the RSSI using the OFDM symbol calculated needed for the measurement subframe performed after the interference is deleted, wherein, the required OFDM symbols calculated are to perform all OFDMs in the measurement subframe after the interference is deleted OFDM symbol.
According to second aspect, in second of possible implementation, the control module, specifically for：
First group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, first group of OFDM symbol is measured in subframe to be described, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is first group of OFDM symbol.
According to second aspect, in the third possible implementation, the control module is additionally operable to：It is determined that before the RSSI of the measurement subframe, determining second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
The control module, specifically for：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the combination second aspect that is calculated needed for described or second aspect the first, second or the third possible implementation, in the 4th kind of possible implementation, the control module, is specifically additionally operable to：
The power sum of the OFDM symbol calculated needed for described in the measurement subframe is calculated, the RSSI is determined, or,
The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, the RSSI is determined.
With reference to second aspect or second aspect the first, second, the third or the 4th kind of possible implementation, in the 5th kind of possible implementation, the acquisition module, specifically for：
If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to the high-level signaling, the measurement subframe is determined, or,
If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the measurement subframe is selected from the sub-frame set received.
The third aspect there is provided a kind of user equipment, including： Processor, for obtaining measurement subframe, wherein, the measurement subframe includes interference signal；The processor, it is additionally operable to determine the received signal strength indicator value RSSI of the measurement subframe, wherein, the RSSI is determined based on the measurement subframe performed after interference deletion, and the interference deletes to delete the interference signal measured in subframe.
In the first possible implementation of the third aspect, the processor is additionally operable to：It is determined that before the RSSI of the measurement subframe, performing the interference to the interference signal included in the measurement subframe and deleting；
The processor, specifically for calculating the RSSI using the OFDM symbol calculated needed for the measurement subframe performed after the interference is deleted, wherein, the required OFDM symbols calculated are to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after the interference is deleted.
According to the third aspect, in second of possible implementation, the processor, specifically for：First group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, first group of OFDM symbol is measured in subframe to be described, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is first group of OFDM symbol.
According to the third aspect, in the third possible implementation, the processor is additionally operable to：It is determined that before the RSSI of the measurement subframe, determining second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；And
The interference is performed to the interference signal in second group of OFDM symbol to delete；
The processor, specifically for：
The RSSI is calculated using the OFDM symbol of required calculating, wherein, the combination third aspect that is calculated needed for described or the third aspect the first, second or the third possible implementation, in the 4th kind of possible implementation, the processor, is specifically additionally operable to：
The power sum of the OFDM symbol calculated needed for described in the measurement subframe is calculated, the RSSI is determined, or, The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, the RSSI is determined.
With reference to the third aspect or the third aspect the first, second, the third or the 4th kind of possible implementation, in the 5th kind of possible implementation, the processor is specifically additionally operable to：If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to the high-level signaling, the measurement subframe is determined, or,
If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the measurement subframe is selected from the sub-frame set received.
The acquisition methods and user equipment for the received signal strength indicator value that the present invention is provided, by obtaining the measurement subframe comprising interference signal first, RSSI is determined based on the measurement subframe performed after interference deletion again, the degree of accuracy that UE measures RSSI value can be improved, and then improves the accuracy of measurement RSRQ values.Brief description of the drawings is in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
The flow chart of the acquisition methods embodiment one for the received signal strength indicator value that Fig. 1 provides for the present 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；
The flow chart of the acquisition methods embodiment two for the received signal strength indicator value that Fig. 3 provides for the present invention；
The flow chart of the acquisition methods embodiment three for the received signal strength indicator value that Fig. 4 provides for the present invention；
The flow chart of the acquisition methods example IV for the received signal strength indicator value that Fig. 5 provides for the present invention；
The structural representation for the user equipment embodiment one that Fig. 6 provides for the present invention； The structural representation for the user equipment embodiment two that Fig. 7 provides for the present invention.Embodiment is to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The flow chart of the acquisition methods embodiment one for the received signal strength indicator value that Fig. 1 provides for the present invention, as shown in figure 1, the acquisition methods of the received signal strength indicator value of the present embodiment, including：
5101st, measurement subframe is obtained, wherein, measurement subframe includes interference signal.
Measurement subframe can be measurement object when UE carries out RRM measurements, specifically, UE can carry out the measurement of the RSSI value in RRM measurements in demodulated signal based on above-mentioned measurement subframe, and what whether the mode that UE obtains measurement subframe can receive that base station issues according to UE is used to indicate that the high-level signaling of RSRQ measurement sub-frame set is divided into two kinds：If one is the high-level signaling for being used to indicate RSRQ measurement sub-frame set that UE receives base station transmission, according to the high-level signaling, it is determined that measurement subframe；If two be the high-level signaling for indicating that RSRQ measures sub-frame set that is used for that UE does not receive base station transmission, the selection measurement subframe from the sub-frame set received.
5102nd, the received signal strength indicator value RSSI of measurement subframe is determined, wherein, RSSI is determined based on the measurement subframe performed after interference deletion, and interference deletes 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 quasi- blank subframe of the macro base station to micro-base station CRE UE interference（Almost Blank Subframe, abbreviation ABS) technology be background, it is ABS subframes that the technology, which refers to that macro base station configures a part of subframe, the only transmitting portion channel in ABS subframes, and micro-base station CRE UE can reduce interference of the macro base station to micro-base station CRE UE by the scheduled subframe corresponding to the ABS subframes of macro base station.
Fig. 2A is the resource distribution schematic diagram of normal sub-frames in embodiment illustrated in fig. 1, and Fig. 2 B are the resource distribution schematic diagram of ABS subframes in Fig. 1 illustrated embodiments, and as shown in Figure 2 A and 2B, normal sub-frames can include Physical Downlink Control Channel（Physical Downlink Control Channel, referred to as 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, abbreviation PDSCH) etc. useful signal 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 signal, and then only include the interference signal such as CRS signals, PBCH signals, PSS/SSS in ABS subframes.
Interference deletion is introduced in interference of the residual signal in ABS subframes to UE, LTE in order to further reduce（Interference Cancelling, abbreviation IC) technology to be to lift base station CRE UE performance, interference deleting technique can be divided into CRS-IC, PBCH-IC and PSS/SSS-IC according to the difference for the interference signal deleted, it is following by taking CRS-IC as an example, to interference deleting technique illustrate：UE configures signal according to the CRS of adjacent cell, the CRS transmitting symbols of adjacent cell can be estimated, symbol is launched according to the CRS of adjacent cell channel estimation is carried out to adjacent cell, launch symbol further according to CRS and estimation channel recovers the interference signal that adjacent cell CRS reaches UE, 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, it is not directed to influence of the interference deletion to signal in subframe, the RSSI value that i.e. prior art is measured contains the interference signal being deleted, cause over-evaluating for RSSI, so the RSSI value measured is often inaccurate.
In the case that the present embodiment then includes interference signal in measurement subframe, based on the measurement subframe performed after interference is deleted, it is determined that the RSSI of measurement subframe.
If being deleted it is understood that UE does not perform interference to measurement subframe, RSSI can be measured using measuring method of the prior art.
Wherein, whether UE performs interference deletion action to measurement subframe, and interference deletion action whether is performed when being demodulated depending on UE in the measurement subframe.For example, UE performs CRS interference deletion actions when PDSCH channels are demodulated in the measurement subframe, then by based on the measurement subframe performed after interference is deleted when UE carries out rssi measurement in the measurement subframe；If UE is not carried out disturbing deletion action when demodulating in the measurement subframe, then UE does not perform interference deletion action to the measurement subframe yet, and RSSI value is measured using measuring method of the prior art.
It should be noted that based in the measurement subframe performed after interference is deleted, it is described to perform Measurement subframe after interference is deleted can be that obtained measurement subframe is deleted in the interference that the interference obtained measurement subframe of deletion is carried out when data are demodulated or is carried out when RRM is measured.
Therefore, it can be performed before measurement subframe is obtained that the step of execution interference is deleted is mentioned in subsequent embodiment, can also be performed after acquisition measurement subframe and before the received signal strength indicator value RSSI of determination measurement subframe, the embodiment of the present invention is not limited this.
Further, based on the measurement subframe performed after interference is deleted, it is determined that measurement subframe
After RSSI, RSRQ can also be obtained, and RSRQ is sent into base station according to the RSSI determined.
The acquisition methods for the received signal strength indicator value that the present embodiment is provided, by obtaining the measurement subframe comprising interference signal first, RSSI is determined based on the measurement subframe performed after interference deletion again, the degree of accuracy that UE measures RSSI value can be improved, and then improves the accuracy of measurement RSRQ values.
The flow chart of the acquisition methods embodiment two for the received signal strength indicator value that Fig. 3 provides for the present invention, as shown in figure 3, the acquisition methods of the received signal strength indicator value of the present embodiment, including：
S201, acquisition measurement subframe, wherein, measurement subframe includes interference signal.
S202, the interference signal execution interference deletion to being included in measurement subframe.
Specifically, the interference signal included in measurement subframe is performed and disturbs deletion, can include disturbing deletion to one or more of perform in the interference signals such as CRS signals, PBCH signals, PSS signals or SSS signals.
S203, RSSI calculated using the OFDM symbol that calculates needed for the measurement subframe performed after interference is deleted, wherein, the OFDM symbol of required calculating is to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after interference deletion.
The executive agent of the present embodiment can be UE.
Specifically, the high-level signaling that the measurement sub-frame set for indicating RSRQ of base station transmission whether can be received according to UE using all OFDM (Orthogonal Frequency Division Multiplexing, abbreviation OFDM) sign computation RSSI in the measurement subframe performed after interference is deleted is divided into two kinds：If one is the high-level signaling for being used to indicate RSRQ measurement sub-frame set that UE receives base station transmission, RSRQ measurement sub-frame set can be the subset of ABS subframes, the power sum of all OFDM symbols in the measurement subframe for performing and disturbing after deleting then is calculated, RSSI is determined;If UE do not receive base station transmission be used for indicate RSRQ measurement sub-frame set high-level signaling, calculate interference deletion after measurement subframe in antenna port 0 it is corresponding perform it is dry The average value of the power of all OFDM symbols in the measurement subframe after deleting is disturbed, RS SI are determined.Alternatively, RSRQ can also be obtained, and RSRQ is sent into base station according to the above-mentioned RSSI calculated.
The acquisition methods for the received signal strength indicator value that the present embodiment is provided, interference is performed by the interference signal included in the measurement subframe to getting to delete, and RSSI is calculated using the OFDM symbol calculated needed for the measurement subframe performed after interference is deleted, the degree of accuracy that UE measures RSSI value can be improved, and then improves the accuracy of measurement RSRQ values.
The flow chart of the acquisition methods embodiment three for the received signal strength indicator value that Fig. 4 provides for the present invention, as shown in figure 4, the acquisition methods of the received signal strength indicator value of the present embodiment, including：S301, acquisition measurement subframe, wherein, measurement subframe includes interference signal.
5302nd, first group of orthogonal frequency division multiplex OFDM symbol in measurement subframe is determined, 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 disturbs the OFDM symbol deleted to be performed in measurement subframe.
Specifically, UE to measurement subframe when being demodulated, the type of interference signal in the measurement subframe can be determined, and to perform the type for the interference signal that interference is deleted, and the OFDM symbol for the interference signal that interference deletion is performed in measurement subframe is determined, first group of OFDM symbol is the OFDM symbol in addition to comprising the OFDM symbol that perform the interference signal that interference is deleted.
For example, if UE to measurement subframe when being demodulated, determine and CRS interference signals are only included in the measurement subframe, and CRS-IC will be performed, then above-mentioned first group of OFDM symbol can be the OFDM symbol not comprising interference signal in the measurement subframe；If UE, which is determined in measurement subframe, includes two kinds of interference signals of CRS and PBCH, and CRS-IC will be performed, then above-mentioned first group of OFDM symbol can be the OFDM symbol and the OFDM symbol for including PBCH interference signals in the measurement subframe not comprising interference signal.
5303rd, using the OFDM sign computation RSSI of required calculating, wherein, the OFDM symbol of required calculating is first group of OFDM symbol.
The executive agent of the present embodiment can be UE.
Specifically, the high-level signaling for calculating the measurement sub-frame set for indicating RSRQ whether RSSI can receive base station transmission according to UE using first group of OFDM symbol is divided into two kinds：If one is the high-level signaling for being used to indicate RSRQ measurement sub-frame set that UE receives base station transmission, the power sum of first group of OFDM symbol is calculated, RSSI is determined;If UE does not receive base station hair The high-level signaling for being used to indicate RSRQ measurement sub-frame set sent, then calculate the average value of the power of 0 corresponding first group of OFDM symbol of antenna port in measurement subframe, determine RSSI.
The acquisition methods for the received signal strength indicator value that the present embodiment is provided, first group of OFDM symbol in measurement subframe is determined first, first group of OFDM symbol is in measurement subframe, OFDM symbol in addition to second group of OFDM symbol, second group of OFDM symbol disturbs the OFDM symbol deleted to be performed in measurement subframe, RSSI is calculated using first group of OFDM symbol again, the degree of accuracy that UE measures RSSI value can be improved, and then improve the accuracy of measurement RSRQ values.
The flow chart of the acquisition methods example IV for the received signal strength indicator value that Fig. 5 provides for the present invention, as shown in figure 5, the acquisition methods of the received signal strength indicator value of the present embodiment, including：S401, acquisition measurement subframe, wherein, measurement subframe includes interference signal.
5402nd, second group of orthogonal frequency division multiplex OFDM symbol in measurement subframe is determined, second group of OFDM symbol disturbs the OFDM symbol deleted to be performed in measurement subframe.
Specifically, UE to measurement subframe when being demodulated, the type of interference signal in the measurement subframe can be determined, and to perform the type for the interference signal that interference is deleted, and the OFDM symbol for measuring the interference signal that interference deletion is performed in subframe is determined, second group of OFDM symbol is the OFDM symbol for including the interference signal that perform interference deletion.
For example, if UE to measurement subframe when being demodulated, CRS-IC will be performed by determining, then above-mentioned second group of OFDM can measure the OFDM symbol for including CRS interference signals in subframe；If it is determined that PBCH-IC will be performed, then above-mentioned second group of OFDM can measure the OFDM symbol for including PBCH interference signals in subframe.
5403rd, interference is performed to the interference signal in second group of OFDM symbol to delete.
5404th, using the OFDM sign computation RSSI of required calculating, wherein, the OFDM symbol of required calculating is to perform second group of OFDM symbol after interference is deleted.
The executive agent of the present embodiment can be UE.
Specifically, the high-level signaling for calculating the measurement sub-frame set for indicating RSRQ whether RSSI can receive base station transmission according to UE using the second group of OFDM symbol performed after interference is deleted is divided into two kinds：If one be UE receive base station transmission be used for indicate RSRQ measurement sub-frame set high-level signaling, calculate disturb deletion action after second group of OFDM symbol power sum, determine RSSI;If UE does not receive the high-level signaling for being used to indicate RSRQ measurement sub-frame set that base station is sent, calculate corresponding perform of antenna port 0 in measurement subframe and disturb deletion The average value of the power of second group of OFDM symbol afterwards, determines RSSI.
The acquisition methods for the received signal strength indicator value that the present embodiment is provided, second group of OFDM symbol in measurement subframe is determined first, second group of OFDM symbol disturbs the OFDM symbol deleted to be performed in measurement subframe, interference is performed to the interference signal in second group of OFDM symbol to delete, RSSI is calculated using the second group of OFDM symbol performed after interference is deleted again, the degree of accuracy that UE measures RSSI value can be improved, and then improves the accuracy of measurement RSRQ values.
The structural representation for the user equipment embodiment one that Fig. 6 provides for the present invention, as shown in fig. 6, the user equipment of the present embodiment, including acquisition module 61 and control module 62, wherein, acquisition module
61 are used to obtain measurement subframe, wherein, measurement subframe includes interference signal；Control module 62 is used for the received signal strength indicator value RSSI for determining measurement subframe, wherein, RSSI is determined based on the measurement subframe performed after interference deletion, and interference deletes to delete the interference signal measured in subframe.
Further, acquisition module 61 specifically can be used for：
If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to high-level signaling, it is determined that subframe is measured, or,
If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the selection measurement subframe from the sub-frame set received.
Further, control module 62 can be also used for after RSSI according to interference deletion action, is determined, according to RSSI, obtain Reference Signal Received Quality RSRQ, and RSRQ is sent into base station.
The user equipment of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 1, and its implementing principle and technical effect is similar, and here is omitted.
In the user equipment embodiment two that the present invention is provided, further, on the basis of embodiment illustrated in fig. 6, control module 62 can be also used for it is determined that before the RSSI of measurement subframe, performing interference to the interference signal included in measurement subframe and deleting；The OFDM symbol that need to be calculated calculates RSSI, wherein, the OFDM symbol of required calculating is to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after interference is deleted.
If control module 62 specifically can be also used for the high-level signaling for being used to indicate RSRQ measurement sub-frame set that UE receives base station transmission, the power sum of all OFDM symbols in the measurement subframe performed after interference is deleted is calculated, RSSI is determined;If UE does not receive the high-level signaling for being used to indicate RSRQ measurement sub-frame set of base station transmission, the correspondence of measurement subframe antenna port 0 is calculated The user equipment of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 3, and its implementing principle and technical effect is similar, and here is omitted.
In the user equipment embodiment three that the present invention is provided, further, on the basis of embodiment illustrated in fig. 6, control module 62 specifically can be used for：
It is determined that first group of orthogonal frequency division multiplex OFDM symbol in measurement subframe, first group of OFDM symbol is measures in subframe, the OFDM symbols in addition to second group of OFDM symbol；Second group of OFDM symbol disturbs the OFDM symbol deleted to be performed in measurement subframe；
RSSI is calculated using the OFDM symbol of required calculating, wherein, the OFDM symbol of required calculating is first group of OFDM symbol.
If control module 62 specifically can be also used for the high-level signaling for being used to indicate RSRQ measurement sub-frame set that UE receives base station transmission, the power sum of first group of OFDM symbol is calculated, RSSI is determined;If UE does not receive the high-level signaling for being used to indicate RSRQ measurement sub-frame set of base station transmission, the average value of the power of 0 corresponding first group of OFDM symbol of antenna port in measurement subframe is calculated, RSSI is determined.
The user equipment of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 4, and its implementing principle and technical effect is similar, and here is omitted.
In the user equipment example IV that the present invention is provided, further, on the basis of embodiment illustrated in fig. 6, control module 62 specifically can be also used for：
It is determined that before the RSSI of measurement subframe, it is determined that measuring second group of orthogonal frequency division multiplex OFDM symbol in subframe, second group of OFDM symbol disturbs the OFDM symbols deleted to be performed in measurement 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 deletion action.
Control module 62 calculates RSSI specifically for the OFDM symbol using required calculating, wherein, the OFDM symbol of required calculating is to perform second group of OFDM symbol after interference is deleted.
If control module 62 specifically can be also used for the high-level signaling for being used to indicate RSRQ measurement sub-frame set that UE receives base station transmission, the power sum for performing second group of OFDM symbol after interference is deleted is calculated, RSSI is determined;If UE does not receive the high-level signaling for being used to indicate RSRQ measurement sub-frame set of base station transmission, calculate and measure in subframe that antenna port 0 is corresponding performs The average value of the power of second group of OFDM symbol after interference deletion, determines RS SI.
The user equipment of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 5, and its implementing principle and technical effect is similar, and here is omitted.
The structural representation for the user equipment embodiment two that Fig. 7 provides for the present invention, as shown in fig. 7, the user equipment that the present embodiment is provided includes：At least one memory 701, at least one RF (Radio Frequency, radio frequency, abbreviation RF) circuit 710 and at least one processor 720.Alternatively, it can also include：Chip 702, I/O (Input/Output, input/output, abbreviation I/O) subsystem 703, voicefrequency circuit 704, external interface 705, Memory Controller and operating system etc..Processor 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 is not limited to mobile phone or tablet personal computer etc..Each component shown in Fig. 7 can be realized with the combination of hardware, software or software and hardware, including one or more signal transactings and/or application specific integrated circuit.Memory 701 may include high-speed random access memory, non-volatile solid state memory device etc..Memory Controller can control the access of other components to memory 701 such as the processor of user equipment, to call each module in memory 701 to perform corresponding function.
Processor 720, for obtaining measurement subframe, wherein, measurement subframe includes interference signal；Processor 720, is additionally operable to determine the received signal strength indicator value RSSI of measurement subframe, wherein, RSSI is determined based on the measurement subframe performed after interference deletion, and interference deletes to delete the interference signal measured in subframe.
Further, processor 720, are additionally operable to：
It is determined that before the RSSI of measurement subframe, performing interference to the interference signal included in measurement subframe and deleting；
Processor 720, it is additionally operable to calculate RSSI using the OFDM symbol calculated needed for the measurement subframe performed after interference is deleted, wherein, the OFDM symbol of required calculating is to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after interference is deleted.
Further, processor 720, are specifically additionally operable to：
It is determined that first group of orthogonal frequency division multiplex OFDM symbol in measurement subframe, first group of OFDM symbol is measures in subframe, the OFDM symbols in addition to second group of OFDM symbol；Second group of OFDM symbol disturbs the OFDM symbol deleted to be performed in measurement subframe；
RSSI is calculated using the OFDM symbol of required calculating, wherein, the OFDM symbols of required calculating Number for first group of OFDM symbol.
Further, processor 720, are additionally operable to：
It is determined that before the RSSI of measurement subframe, it is determined that measuring second group of orthogonal frequency division multiplex OFDM symbol in subframe, second group of OFDM symbol disturbs the OFDM symbols deleted to be performed in measurement 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 required OFDM symbol calculated, wherein, the OFDM symbol of required calculating is to perform second group of OFDM symbol after interference is deleted.
Further, processor 720, are additionally operable to：
The power sum of the OFDM symbol calculated needed for measurement subframe is calculated, RSSI is determined, or,
The average value of the power of the OFDM symbol calculated needed for antenna port 0 is corresponding in measurement subframe is calculated, RSSI is determined.
Further, processor 720, are specifically additionally operable to：
If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to high-level signaling, it is determined that subframe is measured, or,
If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the selection measurement subframe from the sub-frame set received.
Alternatively, processor 720, can be also used for：
After RSSI according to interference deletion action, is determined, 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, producing for the message can be combined miscellaneous part/module to realize by the processor 720 or miscellaneous part/module or processor 720 of user equipment.
The user equipment that the present embodiment is provided, can be used for the part that UE correspondences are performed in the technical scheme of any shown embodiments of the method for execution Fig. 1 and Fig. 3 Fig. 5, and its implementing principle and technical effect is similar, and here is omitted.Fig. 7 is only a kind of schematic diagram for the structure of user equipment that the present invention is provided, and 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 be completed by the related hardware of programmed instruction, and foregoing program can be stored in a computer In read/write memory medium, the program upon execution, performs the step of including above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part or all technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims (1)

  1. Claims
    1st, a kind of acquisition methods of received signal strength indicator value, it is characterised in that including：Measurement subframe is obtained, wherein, the measurement subframe includes interference signal；And
    The received signal strength indicator value RSSI of the measurement subframe is determined, wherein, the RSSI is determined based on the measurement subframe performed after interference deletion, and the interference deletes to delete the interference signal measured in subframe.
    2nd, the method according to claim 1, it is characterised in that before the RSSI of the determination measurement subframe, methods described also includes：
    The interference is performed to the interference signal included in the measurement subframe to delete；The RSSI for determining the measurement subframe, including：
    Using RSSI described in the OFDM sign computations calculated needed for the measurement subframe performed after the interference is deleted, wherein, the required OFDM symbol calculated is to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after the interference is deleted.
    3rd, the method according to claim 1, it is characterised in that the RSSI of the determination measurement subframe, including：
    First group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, first group of OFDM symbol is measured in subframe to be described, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；
    The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required calculating
    OFDM symbol is first group of OFDM symbol.
    4th, the method according to claim 1, it is characterised in that before the RSSI of the determination measurement subframe, methods described also includes：
    Second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；And
    The interference is performed to the interference signal in second group of OFDM symbol to delete；The RSSI for determining the measurement subframe, including：
    The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required calculating 5th, the method according to any one of claim 14, it is characterised in that the interference signal, including：
    Cell-level reference signal CRS interference signals, Physical Broadcast Channel PBCH interference signals, master sync signal PSS interference signals, and at least one of auxiliary synchronization channel SSS interference signals interference signal.
    6th, the method according to any one of claim 15, it is characterised in that the RSSI of the determination measurement subframe, including：
    The power sum of the OFDM symbol calculated needed for described in the measurement subframe is calculated, the RSSI is determined, or,
    The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, the RSSI is determined.
    7th, the method according to any one of claim 16, it is characterised in that the acquisition measures subframe, including：
    If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to the high-level signaling, the measurement subframe is determined, or,
    If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the measurement subframe is selected from the sub-frame set received.
    8th, a kind of user equipment, it is characterised in that including：
    Acquisition module, for obtaining measurement subframe, wherein, the measurement subframe includes interference signal；Control module, received signal strength indicator value RSSI for determining the measurement subframe, wherein, the RSSI is determined based on the measurement subframe performed after interference deletion, and the interference deletes to delete the interference signal measured in subframe.
    9th, the user equipment according to claim 8, it is characterised in that the control module, is additionally operable to：
    It is determined that before the RSSI of the measurement subframe, performing the interference to the interference signal included in the measurement subframe and deleting；
    The control module, specifically for calculating the RSSI using the OFDM symbol calculated needed for the measurement subframe performed after the interference is deleted, wherein, the required OFDM symbols calculated are to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after the interference is deleted. 10th, user equipment according to claim 8, it is characterised in that the control module, specifically for：
    First group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, first group of OFDM symbol is measured in subframe to be described, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；
    The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is first group of OFDM symbol.
    11st, user equipment according to claim 8, it is characterised in that the control module, is additionally operable to：
    It is determined that before the RSSI of the measurement subframe, determining second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；And
    The interference is performed to the interference signal in second group of OFDM symbol to delete；The control module, specifically for：
    The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required calculating
    12nd, the user equipment according to any one of claim 8 11, it is characterised in that the control module, is specifically additionally operable to：
    The power sum of the OFDM symbol calculated needed for described in the measurement subframe is calculated, the RSSI is determined, or,
    The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, the RSSI is determined.
    13rd, the user equipment according to any one of claim 8 12, it is characterised in that the acquisition module, specifically for：
    If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to the high-level signaling, the measurement subframe is determined, or,
    If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the measurement subframe is selected from the sub-frame set received.
    14th, a kind of user equipment, it is characterised in that including： Processor, for obtaining measurement subframe, wherein, the measurement subframe includes interference signal；The processor, it is additionally operable to determine the received signal strength indicator value RSSI of the measurement subframe, wherein, the RSSI is determined based on the measurement subframe performed after interference deletion, and the interference deletes to delete the interference signal measured in subframe.
    15th, user equipment according to claim 14, it is characterised in that the processor, is additionally operable to：
    It is determined that before the RSSI of the measurement subframe, performing the interference to the interference signal included in the measurement subframe and deleting；
    The processor, specifically for calculating the RSSI using the OFDM symbol calculated needed for the measurement subframe performed after the interference is deleted, wherein, the required OFDM symbols calculated are to perform all orthogonal frequency division multiplex OFDM symbols in the measurement subframe after the interference is deleted.
    16th, user equipment according to claim 14, it is characterised in that the processor, specifically for：
    First group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe is determined, first group of OFDM symbol is measured in subframe to be described, the OFDM symbol in addition to second group of OFDM symbol；Second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；
    The RSSI is calculated using the OFDM symbol of required calculating, wherein, the required OFDM symbol calculated is first group of OFDM symbol.
    17th, user equipment according to claim 14, it is characterised in that the processor, is additionally operable to：
    It is determined that before the RSSI of the measurement subframe, determining second group of orthogonal frequency division multiplex OFDM symbol in the measurement subframe, second group of OFDM symbol will perform the OFDM symbol that the interference is deleted for described measure in subframe；And
    The interference is performed to the interference signal in second group of OFDM symbol to delete；
    The processor, specifically for：
    The RSSI is calculated using the OFDM symbol of required calculating, wherein, it is described needed for calculate 18, the user equipment according to any one of claim 14 17, it is characterised in that it is described Processor, is specifically additionally operable to：
    The power sum of the OFDM symbol calculated needed for described in the measurement subframe is calculated, the RSSI is determined, or,
    The average value of the power of the corresponding required OFDM symbol calculated of antenna port 0 in the measurement subframe is calculated, the RSSI is determined.
    19th, the user equipment according to any one of claim 14 18, it is characterised in that the processor, is specifically additionally operable to：
    If receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, according to the high-level signaling, the measurement subframe is determined, or,
    If not receiving the high-level signaling for being used to indicate measurement sub-frame set of base station transmission, the measurement subframe is selected from the sub-frame set received.
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