CN106413104B - The method and apparatus of CCA energy measuring thresholding is determined in LAA based on interference measurement - Google Patents
The method and apparatus of CCA energy measuring thresholding is determined in LAA based on interference measurement Download PDFInfo
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- CN106413104B CN106413104B CN201510493794.4A CN201510493794A CN106413104B CN 106413104 B CN106413104 B CN 106413104B CN 201510493794 A CN201510493794 A CN 201510493794A CN 106413104 B CN106413104 B CN 106413104B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
Abstract
Embodiment of the disclosure discloses the method and apparatus for determining CCA energy measuring thresholding in a kind of LAA based on interference measurement.The described method includes: measuring the interference based on carrier wave silence；For the interference of the measurement, corresponding interference threshold is determined；And it is based on the interference threshold, determine the CCA energy measuring thresholding.Embodiment of the disclosure also discloses a kind of method and apparatus for assisting equally enhancing downstream modulation in access LAA based on above-mentioned interference measurement in authorization.The described method includes: measuring the interference based on carrier wave silence；And the interference of the measurement is removed from the signal received, to enhance downstream modulation.By using the method for the above-mentioned interference measurement based on raising, improves downstream modulation and CCA energy measuring thresholding is adaptively adjusted simultaneously to ensure good between LAA-LTE system and Wi-Fi system coexist.
Description
Technical field
Embodiment of the disclosure is related to the auxiliary access of the authorization in long term evolution (LTE) field (LAA), and more specifically relates to
And the method and apparatus of CCA energy measuring thresholding is determined based on interference measurement in a kind of LAA and enhances the method for downstream modulation
And equipment.
Background technique
In RAN#65 plenary session, pass through new in the authorization auxiliary access (LAA) using long term evolution (LTE)
Research project, to assess the enhancing of LTE for single total solution frame.Specifically, LAA-LTE can be by opening
Hair " unlicensed spectrum " efficiently using improving network performance, wherein by using " carrier aggregation " technology will authorize frequency spectrum
It is configured to main plot and configures time cell for unlicensed spectrum.Therefore, unlicensed spectrum can be by other unplanned nodes
Shared, such node includes (inter-operator) LTE node, and such as Wi-Fi and radar etc between operator
(inter-system) node between system.
The good channel usage for being the node that avoids severe jamming and ensure to coexist in 5GHz unlicensed spectrum, Europe
All transmission nodes of telecommunication standard association (ETSI) regulatory requirements execute " first listen and say afterwards " (LBT), that is, node must be by " empty
Channel assessment " (CCA) and/or the mode for extending CCA (ECCA) carry out sensing channels, and are only just accounted for when channel is idle
With.In order to follow the requirement of ETSI to realize that single general frame, LBT should also obtain the support of LAA-LTE system.
As required in ETSI regulation, CCA/ECCA is executed based on energy measuring, wherein during the CCA period,
When total jamming power is lower than CCA energy measuring thresholding, channel is defined as the free time.By reducing CCA energy measuring thresholding, make
Obtaining sensing region becomes wider, and can provide the transmission of relatively strong in view of the reduction of interference.However, this improvement
It is to reduce the multiplexing factor of network (reuse factor) as cost.In other words, avoid interference with channel usage it
Between exist compromise.
Compared with Wi-Fi, the performance of LAA-LTE is less subject to the influence of interference, this is because in the network of planning
Caused by physical layer (PHY) design of LTE system, including HARQ, AMC, ICIC, IRC etc., and the assistance of authorization carrier wave.In addition,
It can be by being multiplexed between the LAA-LTE node between operator using complete, to provide further improvement.If close at these
LBT is executed between the node of collection deployment, the capacity of network can substantially be affected, because the access channel of " chance type " can make again
It is reduced with the factor.Therefore, in the case where depositing the increased situation of interference within an acceptable range, LAA-LTE can be more by allowing
Actively the channel multiplexing of (aggressive) carrys out development capacity gain, can be by configuring higher CCA energy measuring thresholding
To realize.
It is mentioned to that " LAA should not more influence Wi- than the other Wi-Fi network on same carrier wave in the target of SI
Fi services (data, video and voice service) ".The multiplexing factor for improving LAA-LTE network should not damage the Wi-Fi net coexisted
Network.Since Wi-Fi is more sensitive to interfering, and the multiplexing factor of increased LAA-LTE node may be decreased the channel of Wi-Fi and occupy
Therefore rate is more favorable using adaptive CCA when only LAA-LTE node nearby.
On the other hand, when LAA network and Wi-Fi network coexist, due to passing through the short packages of Wi-Fi node, and make
Must interfere even may dynamically change in the word carrier wave of 1ms.In general, sending request/clear to send request/confirmation (RTS/
CTS/ACK the size of data packet) it is mono- can to influence one or two LTE in about 40 μ s or shorter in subframe
Carrier wave frequency division multiplexing/orthogonal frequency division multiplexing (SC-FDM/OFDM) symbol, and longer Wi-Fi data packet may will affect it is multiple
Subframe.It may not be able to accurately be captured by subframe using the noise/interference estimation for channel estimation for carrying out self-generated reference signal
The slight change in interference that distinct symbols are seen.In addition, short-term interference variation may influence Physical Downlink Shared Channel
(PDSCH) demodulation, this is because downstream modulation performance has very strong dependence to the Interference Estimation of each symbol.
Therefore, interference measurement is improved to improve downstream modulation and CCA energy measuring thresholding is adaptively adjusted with true simultaneously
Protecting good coexist between LAA-LTE system and Wi-Fi system is to seem to be advantageous.However, up to the present problem is also
Without reference to the mechanism for how estimating interference.Embodiment of the disclosure proposes feasible working mechanism regarding to the issue above.
Summary of the invention
In order to solve the problems, such as above-mentioned Interference Estimation, embodiment of the disclosure is proposed in a kind of LAA based on interference measurement
The method and equipment of CCA energy measuring thresholding are determined, to protect Wi-Fi system and maintain height simultaneously for LAA-LTE
Access probability and resource utilization.Embodiment of the disclosure, which also proposed in a kind of LAA, enhances downlink based on interference measurement
The method and apparatus of demodulation.In above two application between interference, (including interference in operator, interference, Wi-Fi are dry operator
Disturb and always interfere) measurement completed by carrier wave silence.
The first aspect of the disclosure provides the side for determining CCA energy measuring thresholding in a kind of LAA based on interference measurement
Method.Using this method, CCA energy measuring thresholding can use carrier wave it is silent and based at OFDM symbol actual measurement arrive it is dry
It disturbs and is adaptively adjusted.The described method includes: measuring the interference based on carrier wave silence；For the interference of the measurement,
Determine corresponding interference threshold；And it is based on the interference threshold, determine the CCA energy measuring thresholding.
It may be noted that silence carrier wave means that the carrier wave is set to sky without using the carrier-wave transmission information herein
It is white.
According to an exemplary embodiment of the present disclosure, the interference includes at least one below: interfering, runs in operator
Interference, Wi-Fi interference and total interference between quotient.
According to an exemplary embodiment of the present disclosure, wherein it includes: silent respectively for measuring the interference based on carrier wave silence
One or different from each other multiple subcarriers, with obtain in corresponding operator interference between interference, operator, Wi-Fi interference and
Total interference.
According to an exemplary embodiment of the present disclosure, the silent one or different from each other multiple subcarriers of difference, to obtain phase
Interference, Wi-Fi interference and total interference include: between interference, operator in the operator answered
(a) a LAA operator, silent first subcarrier, to measure the fortune of other operators in LAA are directed to
The sum of interference and Wi-Fi interference between battalion quotient；
For example, for the silent first carrier of a LAA operator (for example, operator A), so that operator A can be surveyed
Amount is interfered between the operator of other operators (for example, operator B).It equally, can also be quiet for the operator B in LAA
Silent first carrier, so that operator B is interfered between can measuring the operator from operator A.
(b) all LAA operators, silent second subcarrier, to measure the Wi-Fi interference, second son are directed to
Carrier wave is different from first subcarrier；
For example, introducing whole operators on it by silent one or more subcarriers, just make operator A in this way
Wi-Fi interference can be measured with operator B, this is because only having Wi-Fi that can transmit on the subcarrier at this time.
(c) all LAA operators are directed to, not silent third subcarrier, to measure total interference, the third subcarrier is not
It is same as first subcarrier and second subcarrier；
For example, a normal subcarrier is introduced, to execute total interference measurement.In the case, any operator should not
By subcarrier silence, to ensure that all interference from LAA and Wi-Fi can be measured to.
(d) it is measured according to the sum of interference between the operator measured in (a) and Wi-Fi interference with (b)
Wi-Fi interference difference, determine and interfere between the operator, that is, by by the Wi-Fi measured interference from measuring
Operator between interfere and the sum of Wi-Fi interference in subtract and interfered between operator to obtain；And
(e) according to interfered between the total interference measured in (c) and the operator measured in (a) with it is described
Wi-Fi interference the sum of difference, determine the operator in interfere, that is, by will will between the operator that measured interfere and Wi-
The sum of Fi interference subtracts to obtain in operator and interfere from the total interference measured.
According to an exemplary embodiment of the present disclosure, wherein being directed to the interference of the measurement, corresponding interference threshold packet is determined
It includes: determining and correspond respectively in the operator do in the operator of interference and Wi-Fi interference between interference, the operator
Disturb threshold value (Tintra-operator LAA), interference threshold (T between operatorinter-operator LAA) and Wi-Fi interference threshold (TWi-Fi)；
According to an exemplary embodiment of the present disclosure, wherein being based on the interference threshold, the CCA energy measuring thresholding is determined
It include: by interference threshold and Wi-Fi interference threshold and actual measurement between interference threshold, operator in the operator of the determination
The value for value and the Wi-Fi interference interfered between the value of interference, operator in operator is compared respectively；And based on the comparison
Result determine the CCA energy measuring thresholding.
Wherein, in above three interference threshold, it is contemplated that the channeling -1 in operator, therefore in the operator
Interference threshold is set to the maximum, and in view of Wi-Fi System Priority needs to protect, therefore the Wi-Fi interference threshold quilt
It is set as minimum, that is, Tintra-operator LAA>Tinter-operator LAA>TWi-Fi。
According to an exemplary embodiment of the present disclosure, wherein result based on the comparison determines the CCA energy measuring door
Limit includes:
(a) when the value that the Wi-Fi of actual measurement is interfered is greater than the Wi-Fi interference threshold, by the Wi-Fi interference threshold
Value is determined as the CCA energy measuring thresholding；
(b) it is less than or equal to the Wi-Fi interference threshold in the value that the Wi-Fi of actual measurement is interfered, and actually surveys
The value interfered between the operator of amount be greater than the operator between interference threshold when, interference threshold between the operator is determined as institute
State CCA energy measuring thresholding；And (c) it is less than or equal to the Wi-Fi interference threshold in the value that the Wi-Fi of actual measurement is interfered
Value, and the value interfered between the operator of actual measurement be less than or equal to the operator between interference threshold when, by the fortune
Interference threshold is determined as the CCA energy measuring thresholding in battalion quotient.
The second aspect of the disclosure, which provides a kind of access in LAA in authorization auxiliary, enhances downlink solution based on interference measurement
The method of tune, this method comprises: measuring the interference based on carrier wave silence；And the survey is removed from the signal received
The interference of amount, to enhance downstream modulation.
According to an exemplary embodiment of the present disclosure, the interference includes at least one below: interfering, runs in operator
Interference, Wi-Fi interference and total interference between quotient.
According to an exemplary embodiment of the present disclosure, wherein it includes: one silent for measuring the interference based on carrier wave silence
Or multiple subcarriers different from each other, it is interfered between interference, operator, in Wi-Fi interference and total interference with obtaining in operator
At least one.
According to an exemplary embodiment of the present disclosure, wherein silent one or multiple subcarriers different from each other, to obtain
At least one of interference, Wi-Fi interference and total interference include: between interference, operator in operator
(a) a LAA operator, silent first subcarrier, to measure the operation from other operators of LAA are directed to
The sum of interference and Wi-Fi interference between quotient；
(b) all LAA operators are directed to, silent second subcarrier, to measure the Wi-Fi interference, wherein described the
Two subcarriers are different from first subcarrier；
(c) all LAA operators, not silent third subcarrier, to measure total interference, wherein third carries are directed to
Wave is different from first subcarrier and second subcarrier；
(d) it is measured according to the sum of interference between the operator measured in (a) and Wi-Fi interference with (b)
Wi-Fi interference difference, determine and interfere between the operator；And
(e) according to interfered between the total interference measured in (c) and the operator measured in (a) with it is described
The difference of the sum of Wi-Fi interference, determines in the operator and interferes.
The third aspect of the disclosure is provided in a kind of LAA and is determined setting for CCA energy measuring thresholding based on interference measurement
It is standby, using the equipment, CCA energy measuring thresholding can use carrier wave it is silent and based at OFDM symbol actual measurement arrive it is dry
It disturbs and is adaptively adjusted.The equipment includes: interference measurement unit, for measuring the interference based on carrier wave silence；Interference
Threshold value determination unit determines corresponding interference threshold for being directed to the interference of the measurement；And CCA energy measuring thresholding is true
Order member determines the CCA energy measuring thresholding for being based on the interference threshold.
According to an exemplary embodiment of the present disclosure, the interference includes at least one below: interfering, runs in operator
Interference, Wi-Fi interference and total interference between quotient.
According to an exemplary embodiment of the present disclosure, wherein the interference measurement unit further comprises: carrier wave silence unit,
For silent one or more subcarriers different from each other respectively；And interference measurement subelement, for obtaining corresponding operation
Interference, Wi-Fi interference and total interference between interference, operator in quotient.
According to an exemplary embodiment of the present disclosure, the carrier wave silence unit and the interference measurement subelement are configured as
Interference, Wi-Fi interference and always interference between interference, operator in corresponding operator are obtained by following items:
(a) a LAA operator, silent first subcarrier, to measure the fortune of other operators in LAA are directed to
The sum of LAA interference and Wi-Fi interference between battalion quotient；
(b) all LAA operators, silent second subcarrier, to measure the Wi-Fi interference, second son are directed to
Carrier wave is different from first subcarrier；
(c) all LAA operators are directed to, not silent third subcarrier, to measure total interference, the third subcarrier is not
It is same as first subcarrier and second subcarrier；
(d) it is measured according to the sum of interference between the operator measured in (a) and Wi-Fi interference with (b)
Wi-Fi interference difference, determine and interfere between the operator；And
(e) according to interfered between the total interference measured in (c) and the operator measured in (a) with it is described
The difference of the sum of Wi-Fi interference, determines in the operator and interferes.
According to an exemplary embodiment of the present disclosure, the interference threshold determination unit further comprises: interference threshold determines
Subelement, for determining the fortune for corresponding respectively to interfere between interference, the operator in the operator and the Wi-Fi is interfered
Seek interference threshold and Wi-Fi interference threshold between interference threshold, operator in quotient.
According to an exemplary embodiment of the present disclosure, the CCA energy measuring thresholding determination unit includes: comparing unit, is used
In by the operator of the determination between interference threshold, operator interference threshold and Wi-Fi interference threshold and actual measurement fortune
The value for value and the Wi-Fi interference interfered between the value of interference, operator in battalion quotient is compared respectively；And CCA energy measuring door
It limits and determines subelement, determine the CCA energy measuring thresholding for result based on the comparison.
Wherein, in above three interference threshold, interference threshold is set to the maximum between the operator, and the Wi-
Fi interference threshold is set to minimum, that is, Tintra-operator LAA>Tinter-operator LAA>TWi-Fi。
According to an exemplary embodiment of the present disclosure, wherein the comparing unit and the CCA energy measuring thresholding determine son
Unit is configured as based on following every determining CCA energy measuring thresholding:
(a) when the value that the Wi-Fi of actual measurement is interfered is greater than the Wi-Fi interference threshold, by the Wi-Fi interference threshold
Value is determined as the CCA energy measuring thresholding；
(b) it is less than or equal to the Wi-Fi interference threshold in the value that the Wi-Fi of actual measurement is interfered, and actually surveys
The value interfered between the operator of amount be greater than the operator between interference threshold when, interference threshold between the operator is determined as institute
State CCA energy measuring thresholding；And
(c) it is less than or equal to the Wi-Fi interference threshold in the value that the Wi-Fi of actual measurement is interfered, and actually surveys
The value interfered between the operator of amount be less than or equal to the operator between interference threshold when, by interference threshold in the operator
It is determined as the CCA energy measuring thresholding.
The fourth aspect of the disclosure, which provides a kind of access in LAA in authorization auxiliary, enhances downlink solution based on interference measurement
The equipment of tune, comprising: interference measurement unit, for measuring the interference based on carrier wave silence；And downstream modulation enhancing is single
Member, for removing the interference of the measurement from the signal received, to enhance downstream modulation.
According to an exemplary embodiment of the present disclosure, the interference includes at least one below: interfering, runs in operator
Interference, Wi-Fi interference and total interference between quotient.
According to an exemplary embodiment of the present disclosure, wherein interference measurement unit includes: carrier wave silence unit, for silence one
A or different from each other multiple subcarriers and interference measurement subelement are done between interference, operator for obtaining in operator
It disturbs, Wi-Fi is interfered and always at least one of interference.
According to an exemplary embodiment of the present disclosure, wherein the carrier wave silence unit and the interference measurement subelement are matched
It is set to and every is obtained in corresponding operator between interference, operator in interference, Wi-Fi interference and total interference at least by following
It is a kind of:
(a) a LAA operator, silent first subcarrier, to measure the operation from other operators of LAA are directed to
The sum of interference and Wi-Fi interference between quotient；
(b) all LAA operators are directed to, silent second subcarrier, to measure the Wi-Fi interference, wherein described the
Two subcarriers are different from first subcarrier；
(c) all LAA operators, not silent third subcarrier, to measure total interference, wherein third carries are directed to
Wave is different from first subcarrier and second subcarrier；
(d) it is measured according to the sum of interference between the operator measured in (a) and Wi-Fi interference with (b)
Wi-Fi interference difference, determine and interfere between the operator；And
(e) according to interfered between the total interference measured in (c) and the operator measured in (a) with it is described
The difference of the sum of Wi-Fi interference, determines in the operator and interferes.
Detailed description of the invention
Attached drawing described herein is used to provide further understanding of the disclosure, constitutes part of this application, this public affairs
The illustrative embodiments and their description opened do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 be show it is according to an embodiment of the present disclosure for determining CCA energy measuring door based on interference measurement in LAA
The flow chart of the method for limit.
Fig. 2 shows according to an embodiment of the present disclosure for measuring the interference based on carrier wave silence in LAA
The flow chart of method.
Fig. 3 be in the case where operator's time synchronization, it is according to an embodiment of the present disclosure for for the dry of operator A
Disturb the example of the subcarrier maps figure of measurement.
Fig. 4 be in the case where operator's time synchronization, it is according to an embodiment of the present disclosure for for the dry of operator B
Disturb the example of the subcarrier maps figure of measurement.
Fig. 5 be in the case where operator's time irreversibility, it is according to an embodiment of the present disclosure for for operator A
The example of the subcarrier maps figure of interference measurement.
Fig. 6 be in the case where operator's time irreversibility, it is according to an embodiment of the present disclosure for for operator B
The example of the subcarrier maps figure of interference measurement.
Fig. 7 be show it is according to an embodiment of the present disclosure for determining CCA energy measuring door in LAA based on comparative result
The flow chart of the method for limit.
Fig. 8 shows according to an embodiment of the present disclosure be used in LAA based on interference measurement to enhance downstream modulation
The flow chart of method.
Fig. 9 be show it is according to an embodiment of the present disclosure for determining CCA energy measuring door based on interference measurement in LAA
The block diagram of the equipment of limit.
Figure 10 shows according to an embodiment of the present disclosure be used in LAA based on interference measurement to enhance downstream modulation
The block diagram of equipment.
Specific embodiment
Several example embodiments shown in below with reference to the accompanying drawings describe the principle of the disclosure.It should be appreciated that description
These embodiments are merely to make those skilled in the art can better understand that realizing the disclosure in turn, and be not with any side
Formula limits the scope of the present disclosure.
Fig. 1 be show it is according to an embodiment of the present disclosure for determining CCA energy measuring door based on interference measurement in LAA
The flow chart of the method 100 of limit.
As illustrated in fig. 1, method 100 includes: that the interference S101 is measured based on carrier wave silence；For the measurement
Interference, determines corresponding interference threshold S102；And it is based on the interference threshold, determine the CCA energy measuring thresholding S103.
It may be noted that silence carrier wave means that the carrier wave is set to sky without using the carrier-wave transmission information herein
It is white.
According to an exemplary embodiment of the present disclosure, the interference, which specifically includes that in operator, interferes
(Iintra-operator LAA), (I is interfered between operatorinter-operator LAA), Wi-Fi interfere (IWi-Fi) and total interference (Itotal)。
It is according to an exemplary embodiment of the present disclosure, one or different from each other silent respectively at the step S101 of method 100
Multiple subcarriers, to obtain in the corresponding operator interference between interference, the operator, Wi-Fi interference and institute
State at least one of total interference.
Fig. 2 be shown in further detail it is according to an embodiment of the present disclosure for being surveyed based on carrier wave silence in LAA
Measure the flow chart of the method 200 of the interference (the step S101 i.e. in method 100).
As shown in Fig. 2, the silent one or different from each other multiple subcarriers of difference, to obtain in the corresponding operator
Interference, Wi-Fi interference packet and total interference include following sub-step S201-S205 between interference, the operator:
At S201: being directed to a LAA operator, silent first subcarrier, to measure other operators in LAA
The sum of interference and Wi-Fi interference are (that is, I between the operatorinter-operator LAA+IWi-Fi)；For example, for a LAA fortune
Seek quotient (for example, operator A) silent one or more carrier waves so that operator A can measure from other battalion quotient (for example,
Operator B) operator between interfere.As shown in figure 3, for operator A, in Physical Resource Block (PRB) (12 sons
Carrier wave) in subcarrier #3 transmitted on the subcarrier by most blank and without data, can make operator A can be in this way
Interference of the measurement between operator (that is, operator B).It equally, can also be one or more silent for the operator B in LAA
A carrier wave, so that operator B is interfered between can measuring the operator from operator A.As shown in figure 4, coming for operator B
It says, the subcarrier #5 in a PRB (12 subcarriers) is transmitted on the subcarrier by most blank and without data, in this way
Operator B can be allowed to measure the interference of the LAA (that is, operator A) between operator.
At S202: for all LAA operators, silent second subcarrier, to measure the Wi-Fi interference
(IWi-Fi), second subcarrier is different from first subcarrier；For example, introducing whole operators on it by silence
One or more subcarriers.In this case, due to only having Wi-Fi that can transmit on the subcarrier at this time, so that fortune
Battalion quotient A and operator B can measure Wi-Fi interference.As shown in Figure 3 and Figure 4, whole operators are introduced on it by silence
One subcarrier.For each operator, the subcarrier #9 in a PRB (12 subcarriers) is set to blank and does not have
There are data to transmit on the subcarrier, such mode allows operator A and operator B to measure Wi-Fi interference.It needs to refer to
Out, under Liang Ge operator in time nonsynchronous situation, the subcarrier can at each OFDM symbol by silence with more
Good interference of the measurement from Wi-Fi, as shown in Figure 5 and Figure 6.
At S203: for all LAA operators, not silent third subcarrier, to measure total interference (Itotal), it is described
Third subcarrier is different from first subcarrier and second subcarrier；For example, a normal subcarrier is introduced, to execute
Total interference measurement.In the case, any operator should not be silent by the subcarrier, all from LAA and Wi-Fi to ensure
Interference can be measured to.As shown in Figure 3 and Figure 4, for each operator, in a PRB (12 subcarriers)
Subcarrier #7 is not blank and it has been known that there is data to transmit on the subcarrier, ensures in this way all from LAA and Wi-
The interference of Fi can be measured to.
At S204: interference is interfered with the Wi-Fi between the operator measured in S201 according to the step
The sum of the difference of Wi-Fi interference that is measured in S202 with the step, determine and interfere between the operator, that is, is logical
It crosses and subtracts the Wi-Fi measured interference to obtain operator from the sum of interference between the operator measured and Wi-Fi interference
Between interfere.
At S205: according to the step measured in S203 it is described it is total interference and measured in the step S201
The operator between interference and the sum of Wi-Fi interference difference, determine the operator in interference, that is, by that will survey
The sum of interference and Wi-Fi interference are subtracted from the total interference measured to obtain in operator and interfere between the operator measured.
Those skilled in the art is it should be appreciated that the time-frequency resources for empty sub-carriers are configurable.
For example, in order to reduce expense, empty sub-carriers can be limited in limited OFDM symbol.It can flexibly be configured to do
Disturb the OFDM symbol of measurement.The number of the OFDM symbol for interference measurement if possible reduces, then data biography can be improved
Defeated efficiency.When interference measurement is completed, the number of the OFDM symbol for interference measurement if possible increases, then CCA energy
Detection threshold adjusting more can " dynamic " be realized at each OFDM symbol.Thus, it will be seen that in data transmission efficiency
Frequency time, which is adjusted, with energy measuring thresholding there is compromise.
Although may be noted that this gives the particular order between step S201, S202 and S203, this fields
Technical staff can to the sequence between step S201, S202 and S203 carry out arbitrary arrangement.Equally, although the present embodiment is given
The particular order between step S204 and S205 is gone out, but any row can also have been carried out to the sequence between step S204 and S205
Column.
Next, method 100 proceeds at step S102, according to an exemplary embodiment of the present disclosure, determination is respectively corresponded
In interference threshold in the operator that interference and the Wi-Fi are interfered between interference, the operator in the operator
(Tintra-operator LAA), interference threshold (T between operatorinter-operator LAA) and Wi-Fi interference threshold (TWi-Fi)。
It, will be in the operator of the determination between interference threshold, operator next, method 100 proceeds at step S103
Value (the I interfered in the operator of interference threshold and Wi-Fi interference threshold and actual measurementintra-operator LAA), do between operator
Value (the I disturbedinter-operator LAA) and Wi-Fi interference value (IWi-Fi) be compared respectively；And result based on the comparison
Determine the CCA energy measuring thresholding (TCCA)。
Wherein, in above three interference threshold, it is contemplated that the channeling -1 in operator, therefore in the operator
Interference threshold is set to the maximum, and in view of Wi-Fi System Priority needs to protect, therefore the Wi-Fi interference threshold quilt
It is set as minimum, that is, Tintra-operator LAA>Tinter-operator LAA>TWi-Fi。
It should be pointed out that can utilize silent subcarrier (as shown in Figures 3 and 4 at each OFDM symbol
OFDM symbol #1, #4, #8 and #11) it is interfered to measure, and the energy measuring door of CAA is adjusted based on the interference measured
Limit.In this way, adjusted CCA energy measuring thresholding can be in subsequent, normal, not silent subcarrier OFDM symbol
It is used for LBT in (other OFDM symbols #2, #3, #5, #6, #7, #9, #10, #12, #13, #14 as shown in Figure 4 and Figure 5).Example
Such as, if interference be measured at OFDM symbol #1, can based on the interference being measured at OFDM symbol #1 come
Setting is directed to the CCA energy measuring thresholding of LBT at subsequent OFDM symbol #2 and symbol #3, to realize the dynamic adjustment of CCA.
Fig. 7 be shown in further detail it is according to an embodiment of the present disclosure for being determined in LAA based on comparative result
The flow chart of the method for CCA energy measuring thresholding (the step S103 i.e. in method 100).
As shown in fig. 7, result based on the comparison determines that the CCA energy measuring thresholding includes following sub-step
S701-S705:
(a) value in response to the Wi-Fi interference measured is greater than the result of the Wi-Fi energy measuring thresholding
The Wi-Fi energy measuring thresholding is determined as the CCA energy measuring thresholding S702 and otherwise proceeds to next step by S701
(b)；
(b) it is greater than interference threshold S703 between the operator in response to the value interfered between the operator that measures, it will
Interference threshold is determined as the CCA energy measuring thresholding S704 between the operator；Otherwise, next step (c) is proceeded to；
(c) interference threshold in the operator is determined as the CCA energy measuring thresholding S705.
Pass through drawings above and embodiment, it can be seen that dynamically adjust based on the main interference measured using this
The mode of CCA energy measuring thresholding can be effectively protected (or most sensitive to interfering) Wi-Fi system of preecedence requirement protection
System, and simultaneously higher access probability and the utilization of resources can be kept for LAA-LTE.
Fig. 8 shows according to an embodiment of the present disclosure be used in LAA based on interference measurement to enhance downstream modulation
The flow chart of method 800.
As shown in figure 8, method 800 includes: to measure the interference S801 based on carrier wave silence；And from the letter received
The interference of the measurement is removed in number, to enhance downstream modulation S802.
According to an exemplary embodiment of the present disclosure, the interference includes at least one below: interfering, runs in operator
Interference, Wi-Fi interference and total interference between quotient.
According to an exemplary embodiment of the present disclosure, S801 includes: silent one or multiple subcarriers different from each other, with
Obtain at least one of interference, Wi-Fi interference and total interference between interference, operator in operator.
According to an exemplary embodiment of the present disclosure, wherein silent one or multiple subcarriers different from each other, to obtain
At least one of interference, Wi-Fi interference and total interference include: between interference, operator in operator
(a) a LAA operator, silent first subcarrier, to measure the operation from other operators of LAA are directed to
The sum of interference and Wi-Fi interference between quotient；
(b) all LAA operators are directed to, silent second subcarrier, to measure the Wi-Fi interference, wherein described the
Two subcarriers are different from first subcarrier；
(c) all LAA operators, not silent third subcarrier, to measure total interference, wherein third carries are directed to
Wave is different from first subcarrier and second subcarrier；
(d) it is measured according to the sum of interference between the operator measured in (a) and Wi-Fi interference with (b)
Wi-Fi interference difference, determine and interfere between the operator；And
(e) according to interfered between the total interference measured in (c) and the operator measured in (a) with it is described
The difference of the sum of Wi-Fi interference, determines in the operator and interferes.
For example, measured on normal carrier wave total interference (as shown in Fig. 3 to Fig. 6 in a PRB (12 sons
Carrier wave) in, it is presented on OFDM symbol #1, #4, the subcarrier #7 in #8 and #11) it can be used to enhance PDSCH demodulation, this is
Because the total interference measured can be subtracted from the signal received.
Due to the explosive interference properties undergone in an unlicensed spectrum, for each OFDM symbol in subframe
Interference volume may be all different.For example, end Wi-Fi data packet may influence multiple subframes.Using carrying out being used for for self-generated reference signal
The noise/interference estimation of channel estimation possibly can not accurately capture the subtle change in the interference seen by the distinct symbols of subframe
Change.Since downstream modulation performance has stronger dependence to the Interference Estimation of each symbol, propose herein this
Interference measurement of the kind based on carrier wave silence improves the accuracy of Interference Estimation and in turn by subtracting from the signal received
Actual measurement enhances downstream modulation to more accurate interference.
Fig. 9 be show it is according to an embodiment of the present disclosure for determining CCA energy measuring door based on interference measurement in LAA
The block diagram 900 of the equipment of limit.
As illustrated in fig. 9, the equipment includes: interference measurement unit 901, described dry for being measured based on carrier wave silence
It disturbs；Interference threshold determination unit 902 determines corresponding interference threshold for being directed to the interference of the measurement；And CCA energy
Detection threshold determination unit 903 determines the CCA energy measuring thresholding for being based on the interference threshold.
According to an exemplary embodiment of the present disclosure, the interference includes at least one below: interfering, runs in operator
Interference, Wi-Fi interference and total interference between quotient.
According to an exemplary embodiment of the present disclosure, wherein the interference measurement unit 901 further comprises: carrier wave is silent single
Member, for silent one or more subcarriers different from each other respectively；And interference measurement subelement, for obtaining corresponding fortune
Seek interference, Wi-Fi interference and total interference between interference, operator in quotient.
According to an exemplary embodiment of the present disclosure, the carrier wave silence unit and the interference measurement subelement are configured as
Pass through following every at least one obtained in corresponding operator between interference, operator in interference, Wi-Fi interference and total interference
Kind:
(a) a LAA operator, silent first subcarrier, to measure the fortune of other operators in LAA are directed to
The sum of LAA interference and Wi-Fi interference between battalion quotient；
(b) all LAA operators, silent second subcarrier, to measure the Wi-Fi interference, second son are directed to
Carrier wave is different from first subcarrier；
(c) all LAA operators are directed to, not silent third subcarrier, to measure total interference, the third subcarrier is not
It is same as first subcarrier and second subcarrier；
(d) it is measured according to the sum of interference between the operator measured in (a) and Wi-Fi interference with (b)
Wi-Fi interference difference, determine and interfere between the operator；And
(e) according to interfered between the total interference measured in (c) and the operator measured in (a) with it is described
The difference of the sum of Wi-Fi interference, determines in the operator and interferes.
According to an exemplary embodiment of the present disclosure, the interference threshold determination unit 902 further comprises: interference threshold is true
Stator unit corresponds respectively in the operator between interference, the operator to interfere and Wi-Fi interference for determining
Interference threshold and Wi-Fi interference threshold between interference threshold, operator in operator.
According to an exemplary embodiment of the present disclosure, the CCA energy measuring thresholding determination unit 903 includes: comparing unit,
For by interference threshold and Wi-Fi interference threshold and actual measurement between interference threshold, operator in the operator of the determination
The value for value and the Wi-Fi interference interfered between the value of interference, operator in operator is compared respectively；And CCA energy measuring
Thresholding determines subelement, determines the CCA energy measuring thresholding for result based on the comparison.
Wherein, in above three interference threshold, it is contemplated that the channeling -1 in operator, therefore in the operator
Interference threshold is set to the maximum, and in view of Wi-Fi System Priority needs to protect, therefore the Wi-Fi interference threshold quilt
It is set as minimum, that is, Tintra-operator LAA>Tinter-operator LAA>TWi-Fi。
According to an exemplary embodiment of the present disclosure, wherein the comparing unit and the CCA energy measuring thresholding determine son
Unit is configured as based on following every determining CCA energy measuring thresholding:
(a) when the value that the Wi-Fi of actual measurement is interfered is greater than the Wi-Fi interference threshold, by the Wi-Fi interference threshold
Value is determined as the CCA energy measuring thresholding；
(b) it is less than or equal to the Wi-Fi interference threshold in the value that the Wi-Fi of actual measurement is interfered, and actually surveys
The value interfered between the operator of amount be greater than the operator between interference threshold when, interference threshold between the operator is determined as institute
State CCA energy measuring thresholding；And
(c) it is less than or equal to the Wi-Fi interference threshold in the value that the Wi-Fi of actual measurement is interfered, and actually surveys
The value interfered between the operator of amount be less than or equal to the operator between interference threshold when, by interference threshold in the operator
It is determined as the CCA energy measuring thresholding.
Figure 10 shows according to an embodiment of the present disclosure be used in LAA based on interference measurement to enhance downstream modulation
The block diagram 1000 of equipment.
As shown in Figure 10, equipment 1000 includes: interference measurement unit 1001, described dry for being measured based on carrier wave silence
It disturbs；And downstream modulation enhancement unit 1002, for removing the interference of the measurement from the signal received, to enhance downlink
Demodulation.
According to an exemplary embodiment of the present disclosure, the interference includes at least one below: interfering, runs in operator
Interference, Wi-Fi interference and total interference between quotient.
According to an exemplary embodiment of the present disclosure, wherein interference measurement unit 1001 includes: carrier wave silence unit, for quiet
Silent one or multiple subcarriers and interference measurement subelement different from each other, for obtaining interference, operator in operator
Between at least one of interference, Wi-Fi interference and total interference.
According to an exemplary embodiment of the present disclosure, wherein the carrier wave silence unit and the interference measurement subelement are matched
It is set to and every is obtained in corresponding operator between interference, operator in interference, Wi-Fi interference and total interference at least by following
It is a kind of:
(a) a LAA operator, silent first subcarrier, to measure the operation from other operators of LAA are directed to
The sum of interference and Wi-Fi interference between quotient；
(b) all LAA operators are directed to, silent second subcarrier, to measure the Wi-Fi interference, wherein described the
Two subcarriers are different from first subcarrier；
(c) all LAA operators, not silent third subcarrier, to measure total interference, wherein third carries are directed to
Wave is different from first subcarrier and second subcarrier；
(d) it is measured according to the sum of interference between the operator measured in (a) and Wi-Fi interference with (b)
Wi-Fi interference difference, determine and interfere between the operator；And
(e) according to interfered between the total interference measured in (c) and the operator measured in (a) with it is described
The difference of the sum of Wi-Fi interference, determines in the operator and interferes.
In conclusion embodiment of the disclosure, which discloses in a kind of LAA, determines CCA energy measuring door based on interference measurement
Limit and enhance the method and apparatus of downstream modulation.By using the method for the above-mentioned interference measurement based on carrier wave silence, so that changing
It has been apt to downstream modulation, and CCA energy measuring thresholding has been adaptively adjusted simultaneously to ensure between LAA-LTE system and Wi-Fi system
It is good to coexist.
The foregoing is merely the alternative embodiments of the disclosure, are not limited to the disclosure, for those skilled in the art
For member, the disclosure can have various modifications and variations.It is all the disclosure spirit and principle within, it is made it is any modification,
Equivalence replacement, improvement etc., should be included within the protection scope of the disclosure.
Claims (12)
1. a kind of assist determining clear channel assessment (CCA) CCA energy measuring thresholding based on interference measurement in access LAA in authorization
Method, comprising:
The interference is obtained based on carrier wave silence；
For the interference, corresponding interference threshold is determined；
Based on the interference threshold, the CCA energy measuring thresholding is determined；And
The interference is wherein obtained based on carrier wave silence includes:
Obtain total interference on multiple subcarriers；And
At least one of silent the multiple subcarrier, to obtain interference and Wi-Fi interference between interference, operator in operator
At least one of,
It is wherein based on the interference threshold, determines that the CCA energy measuring thresholding includes:
By interference threshold and Wi-Fi interference threshold and actual measurement between interference threshold, operator in the operator of the determination
The value for value and the Wi-Fi interference interfered between the value of interference, operator in operator is compared respectively；And
When the value that the Wi-Fi of actual measurement is interfered is greater than the Wi-Fi interference threshold, the Wi-Fi interference threshold is determined
For the CCA energy measuring thresholding；
It is less than or equal to the Wi-Fi interference threshold, and the operation of actual measurement in the value that the Wi-Fi of actual measurement is interfered
The value interfered between quotient be greater than the operator between interference threshold when, interference threshold between the operator is determined as the CCA energy
Measure detection threshold；And
It is less than or equal to the Wi-Fi interference threshold, and the operation of actual measurement in the value that the Wi-Fi of actual measurement is interfered
The value interfered between quotient be less than or equal to the operator between interference threshold when, interference threshold in the operator is determined as institute
State CCA energy measuring thresholding.
2. according to the method described in claim 1, wherein at least one of silent the multiple subcarrier, to obtain operator
Interior interference is interfered between operator and at least one of Wi-Fi interference includes:
(a) a LAA operator, silent first subcarrier, between the operator of the measurement from other operators of LAA are directed to
The sum of interference and Wi-Fi interference；
(b) all LAA operators, silent second subcarrier, to measure the Wi-Fi interference, wherein second son are directed to
Carrier wave is different from first subcarrier；
(c) the sum of interference and Wi-Fi interference and the institute measured in (b) between the operator measured in basis (a)
The difference for stating Wi-Fi interference is determined and is interfered between the operator；And
(d) according to the difference of interference and the sum of Wi-Fi interference between the operator measured in total interference and (a)
Value determines interference in the operator,
Wherein obtaining total interference includes: always to be interfered for all LAA operators, not silent third subcarrier with measuring,
Wherein the third subcarrier is different from first subcarrier and second subcarrier.
3. determining that corresponding interference threshold includes: according to the method described in claim 1, being wherein directed to the interference
It determines and corresponds respectively in the operator that interference and the Wi-Fi are interfered between interference, the operator in the operator
Interference threshold and Wi-Fi interference threshold between interference threshold, operator.
4. according to the method described in claim 1, wherein interference threshold is set to the maximum between the operator, and the Wi-
Fi interference threshold is set to minimum.
5. a kind of method for assisting enhancing downstream modulation in access LAA based on interference measurement in authorization, comprising:
The interference is obtained based on carrier wave silence；
The interference is removed, from the signal received to enhance downstream modulation；And
The interference is wherein obtained based on carrier wave silence includes:
Obtain total interference on multiple subcarriers；
At least one of silent the multiple subcarrier, to obtain interference and Wi-Fi interference between interference, operator in operator
At least one of.
6. according to the method described in claim 5, wherein at least one of silent the multiple subcarrier, to obtain operator
Interior interference is interfered between operator and at least one of Wi-Fi interference includes:
(a) a LAA operator, silent first subcarrier, between the operator of the measurement from other operators of LAA are directed to
The sum of interference and Wi-Fi interference；
(b) all LAA operators, silent second subcarrier, to measure the Wi-Fi interference, wherein second son are directed to
Carrier wave is different from first subcarrier；
(c) the sum of interference and Wi-Fi interference and the institute measured in (b) between the operator measured in basis (a)
The difference for stating Wi-Fi interference is determined and is interfered between the operator；And
(d) according to the difference of interference and the sum of Wi-Fi interference between the operator measured in total interference and (a)
Value determines interference in the operator,
Wherein obtaining total interference includes: always to be interfered for all LAA operators, not silent third subcarrier with measuring,
Wherein the third subcarrier is different from first subcarrier and second subcarrier.
7. a kind of assist determining clear channel assessment (CCA) CCA energy measuring thresholding based on interference measurement in access LAA in authorization
Equipment, the equipment include:
Interference measurement unit, for obtaining the interference based on carrier wave silence；
Interference threshold determination unit determines corresponding interference threshold for being directed to the interference；
CCA energy measuring thresholding determination unit determines the CCA energy measuring thresholding for being based on the interference threshold；And
Wherein the interference measurement unit further comprises:
Carrier wave silence unit, at least one of silent multiple subcarriers；And
Interference measurement subelement, for obtaining total interference and being obtained by least one of silent the multiple subcarrier
At least one of interference and Wi-Fi interference between interference, operator in corresponding operator,
Wherein the CCA energy measuring thresholding determination unit includes:
Comparing unit, for by interference threshold and Wi-Fi interference threshold between interference threshold, operator in the operator of the determination
It is compared respectively with the value of the value interfered in the operator of actual measurement, the value interfered between operator and Wi-Fi interference；And
CCA energy measuring thresholding determines subelement, determines the CCA energy measuring thresholding for result based on the comparison,
And wherein the comparing unit and the CCA energy measuring thresholding determine that subelement is configured as based on following every determining institute
State CCA energy measuring thresholding:
When the value that the Wi-Fi of actual measurement is interfered is greater than the Wi-Fi interference threshold, the Wi-Fi interference threshold is determined
For the CCA energy measuring thresholding；
It is less than or equal to the Wi-Fi interference threshold, and the operation of actual measurement in the value that the Wi-Fi of actual measurement is interfered
The value interfered between quotient be greater than the operator between interference threshold when, interference threshold between the operator is determined as the CCA energy
Measure detection threshold；And
It is less than or equal to the Wi-Fi interference threshold, and the operation of actual measurement in the value that the Wi-Fi of actual measurement is interfered
The value interfered between quotient be less than or equal to the operator between interference threshold when, interference threshold in the operator is determined as institute
State CCA energy measuring thresholding.
8. equipment according to claim 7, the carrier wave silence unit and the interference measurement subelement are configured as leading to
Cross at least one of interference and Wi-Fi interference between interference, operator in every corresponding operator of acquisition below:
(a) a LAA operator, silent first subcarrier, to measure the operator of other operators in LAA are directed to
Between LAA interference with the Wi-Fi interference the sum of；
(b) all LAA operators, silent second subcarrier, to measure the Wi-Fi interference, wherein second son carries are directed to
Wave is different from first subcarrier；
(c) the sum of interference and Wi-Fi interference and the institute measured in (b) between the operator measured in basis (a)
The difference for stating Wi-Fi interference is determined and is interfered between the operator；And
(d) according to the difference of interference and the sum of Wi-Fi interference between the operator measured in total interference and (a)
Value determines interference in the operator,
Wherein the interference measurement subelement is also configured to for all LAA operators, not silent third subcarrier, with
The total interference of measurement, wherein the third subcarrier is different from first subcarrier and second subcarrier.
9. equipment according to claim 7, wherein the interference threshold determination unit further comprises:
Interference threshold determines subelement, correspond respectively in the operator between interference, the operator interfere for determining and
Interference threshold and Wi-Fi interference threshold between interference threshold, operator in the operator of Wi-Fi interference.
10. equipment according to claim 7, wherein interference threshold is set to the maximum between the operator, and the Wi-
Fi interference threshold is set to minimum.
11. a kind of equipment for assisting enhancing downstream modulation in access LAA based on interference measurement in authorization, comprising:
Interference measurement unit, for obtaining the interference based on carrier wave silence；
Downstream modulation enhancement unit, for removing the interference of the measurement from the signal received, to enhance downstream modulation；With
And
Determine total interference on multiple subcarriers；
Wherein interference measurement unit includes:
Carrier wave silence unit, at least one of silent multiple subcarriers, and
Interference measurement subelement, for obtaining total interference and being obtained by least one of silent the multiple subcarrier
At least one of interference and Wi-Fi interference between interference, operator in operator.
12. equipment according to claim 11, wherein the carrier wave silence unit and the interference measurement subelement are matched
It is set to through at least one of interference and Wi-Fi interference between interference, operator in following every corresponding operator of acquisition:
(a) a LAA operator, silent first subcarrier, between the operator of the measurement from other operators of LAA are directed to
The sum of interference and Wi-Fi interference；
(b) all LAA operators, silent second subcarrier, to measure the Wi-Fi interference, wherein second son are directed to
Carrier wave is different from first subcarrier；
(c) the sum of interference and Wi-Fi interference and the institute measured in (b) between the operator measured in basis (a)
The difference for stating Wi-Fi interference is determined and is interfered between the operator；And
(d) according to the difference of interference and the sum of Wi-Fi interference between the operator measured in total interference and (a)
Value determines interference in the operator,
Wherein the interference measurement subelement is also configured to for all LAA operators, not silent third subcarrier, with
The total interference of measurement, wherein the third subcarrier is different from first subcarrier and second subcarrier.
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| CN111866915B (en) * | 2020-07-22 | 2021-11-30 | 北京理工大学 | Method for designing ED threshold in unlicensed spectrum coexistence system based on beam transmission |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229553A (en) * | 1996-04-19 | 1999-09-22 | 阿马提通信有限公司 | Digital radio frequency interference canceller |
| CN101312440A (en) * | 2007-05-24 | 2008-11-26 | 中国科学院微电子研究所 | Signal-noise ratio estimation method for signal of orthogonal frequency division multiplexing communication system |
| US7623494B2 (en) * | 2006-05-18 | 2009-11-24 | Intel Corporation | Adjustment of a clear channel assessment (CCA) threshold |
| CN101594166A (en) * | 2008-05-31 | 2009-12-02 | 华为技术有限公司 | The method and apparatus that disturbs in the erasure signal in the short-distance radio network |
| US7684758B2 (en) * | 2006-11-27 | 2010-03-23 | Intel Corporation | System and method of reducing interferences in wireless communication networks |
| CN102148787A (en) * | 2010-02-10 | 2011-08-10 | 思亚诺移动芯片有限公司 | Method, circuit and system for reducing or eliminating receiving signal noises |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9521587B2 (en) * | 2013-12-11 | 2016-12-13 | Futurewei Technologies, Inc. | System and method for determining a clear channel assessment threshold |
-
2015
- 2015-08-12 CN CN201510493794.4A patent/CN106413104B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229553A (en) * | 1996-04-19 | 1999-09-22 | 阿马提通信有限公司 | Digital radio frequency interference canceller |
| US7623494B2 (en) * | 2006-05-18 | 2009-11-24 | Intel Corporation | Adjustment of a clear channel assessment (CCA) threshold |
| US7684758B2 (en) * | 2006-11-27 | 2010-03-23 | Intel Corporation | System and method of reducing interferences in wireless communication networks |
| CN101312440A (en) * | 2007-05-24 | 2008-11-26 | 中国科学院微电子研究所 | Signal-noise ratio estimation method for signal of orthogonal frequency division multiplexing communication system |
| CN101594166A (en) * | 2008-05-31 | 2009-12-02 | 华为技术有限公司 | The method and apparatus that disturbs in the erasure signal in the short-distance radio network |
| CN102148787A (en) * | 2010-02-10 | 2011-08-10 | 思亚诺移动芯片有限公司 | Method, circuit and system for reducing or eliminating receiving signal noises |
Non-Patent Citations (1)
| Title |
|---|
| FurtherAnalysisonLBEOptionsforReuse-1LAA;Samsung;《3GPPTSGRANWG1#81R1-152873》;20150529;第2节 * |
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