CN106413104A - Method and device for determining CCA energy detection threshold and enhancing downlink demodulation in LAA - Google Patents
Method and device for determining CCA energy detection threshold and enhancing downlink demodulation in LAA Download PDFInfo
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- CN106413104A CN106413104A CN201510493794.4A CN201510493794A CN106413104A CN 106413104 A CN106413104 A CN 106413104A CN 201510493794 A CN201510493794 A CN 201510493794A CN 106413104 A CN106413104 A CN 106413104A
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- 238000005259 measurement Methods 0.000 claims abstract description 50
- 238000005305 interferometry Methods 0.000 claims description 52
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- YRIZYWQGELRKNT-UHFFFAOYSA-N 1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione Chemical compound ClN1C(=O)N(Cl)C(=O)N(Cl)C1=O YRIZYWQGELRKNT-UHFFFAOYSA-N 0.000 description 1
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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
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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Abstract
The invention discloses a method and device for determining the CCA energy detection threshold in LAA. The method includes measuring the interference based on carrier silence; determining the corresponding interference threshold for the measured interference; and determining the CCA energy detection threshold based on the interference threshold. The invention discloses a method and device for enhancing the downlink demodulation based on the interference measurement in license assisted access LAA. The method includes measuring the interference based on carrier silence; and removing the measured interference from the received signal to enhance downlink demodulation. By using the method for improving the interference measurement, the downstream demodulation is improved and the CCA energy detection threshold is adaptively adjusted to ensure the good coexistence between a LAA-LTE system and a Wi-Fi system.
Description
Technical field
The mandate auxiliary that embodiment of the disclosure is related in Long Term Evolution (LTE) accesses (LAA)
Field, and relate more specifically to determine CCA energy measuring based on interferometry in a kind of LAA
The method and apparatus of thresholding and the method and apparatus strengthening downstream modulation.
Background technology
In RAN#65 plenary session, pass through in the mandate using Long Term Evolution (LTE)
Auxiliary accesses the new research project in (LAA), in order to for single total solution frame
Frame is assessing the enhancing of LTE.Specifically, LAA-LTE can be by developing " unlicensed spectrum "
Efficient utilization improving network performance, wherein, by being authorized using " carrier aggregation " technology
Spectrum disposition is main plot and unlicensed spectrum is configured to time cell.Therefore, unlicensed spectrum
Can be included between operator by other unplanned nodes sharing, such node
(inter-operator) between LTE node, and the system of such as Wi-Fi and radar etc
(inter-system) node.
For avoiding severe jamming and guaranteeing that the node coexisting is good in 5GHz unlicensed spectrum
Good channel usage, all transmission nodes of ETSI (ETSI) regulatory requirements are held
Row " first listen and say afterwards " (LBT), i.e. node must by " clear channel assessment (CCA) " (CCA) and
/ or the mode of extension CCA (ECCA) carry out sensing channels, and only just will when channel is idle
It takies.In order to follow the requirement of ETSI to realize single general frame, LBT should also obtain
Support to LAA-LTE system.
As required in ETSI code, CCA/ECCA is executed based on energy measuring,
Wherein, during the CCA period, when total jamming power is less than CCA energy measuring thresholding,
Channel is defined as the free time.By reducing CCA energy measuring thresholding so that sensing region becomes
Obtain wider, and the transmission of relatively strong can be provided in view of the reduction disturbed.However,
This improvement is with the multiplexing factor (reuse factor) reducing network as cost.Change speech
It, trade off avoiding interference to exist and channel usage between.
Compared with Wi-Fi, the performance of LAA-LTE is less subject to the impact disturbed, this be by
Caused by physical layer (PHY) design of the LTE system in the network in planning, including
HARQ, AMC, ICIC, IRC etc., and authorize the assistance of carrier wave.Furthermore it is possible to it is logical
Cross between the LAA-LTE node between operator using being multiplexed completely, to provide and further to change
Enter.If executing LBT between the node of these dense deployment, the capacity of network can significantly be subject to
Impact, because the access channel of " chance type " can make multiplexing factor reduce.Therefore, exist
In the case that interference in tolerance interval increases, LAA-LTE can be by allowing more masters
The channel multiplexing of dynamic (aggressive) carrys out development capacity gain, and it can be higher by configuring
CCA energy measuring thresholding is realizing.
It is mentioned to that " LAA should not be than other on same carrier wave in the target of SI
Wi-Fi network more affects Wi-Fi service (data, video and voice service) ".Improve LAA-LTE
The multiplexing factor of network should not damage the Wi-Fi network coexisting.Due to Wi-Fi to interference more
Sensitivity, and the multiplexing factor of increased LAA-LTE node may reduce the channel of Wi-Fi and account for
There is rate, therefore, when only LAA-LTE node nearby, be more using self adaptation CCA
Favourable.
On the other hand, when LAA network is coexisted with Wi-Fi network, due to by Wi-Fi
The short packages of node, and interference even may dynamically be become in the word carrier wave of 1ms
Change.Generally, send the packet of request/clear to send request/confirmation (RTS/CTS/ACK)
Size can be in about 40 μ s or shorter, it can affect one or two LTE in subframe
Single carrier frequency division multiplexing/OFDM (SC-FDM/OFDM) symbol, and longer
Wi-Fi packet may affect multiple subframes.Using carrying out estimating for channel of self-generated reference signal
The noise/interference of meter is estimated to catch exactly by doing that the distinct symbols of subframe are seen
Slight change in disturbing.In addition, the change of this short-term interference may impact Physical Downlink Shared Channel
(PDSCH) demodulation, this is because downstream modulation performance has to the Interference Estimation of each symbol
There is very strong dependency.
Therefore, improve interferometry to improve downstream modulation and to be adaptively adjusted CCA simultaneously
Energy measuring thresholding is to guarantee that between LAA-LTE system and Wi-Fi system, good coexisting is seemingly
It is favourable.However, problem be up to the present also without reference to how to estimate disturb
Mechanism.Embodiment of the disclosure proposes feasible working mechanism for the problems referred to above.
Content of the invention
In order to solve the problems, such as above-mentioned Interference Estimation, embodiment of the disclosure proposes a kind of LAA
In determine method and the equipment of CCA energy measuring thresholding based on interferometry, in order to protect
Shield Wi-Fi system simultaneously maintains high access probability and resource utilization for LAA-LTE simultaneously.
Embodiment of the disclosure also proposed in a kind of LAA and strengthens downstream modulation based on interferometry
Method and apparatus.In above two application, (operator internal interference, operation are included to interference
Interference between business, Wi-Fi interference and total disturb) measurement all mourn in silence to complete by carrier wave.
The first aspect of the disclosure provides in a kind of LAA and determines CCA based on interferometry
The method of energy measuring thresholding.Using the method, CCA energy measuring thresholding can utilize carrier wave
Mourn in silence and be adaptively adjusted based on the interference measuring actual at OFDM symbol.Institute
The method of stating includes：Mourn in silence to measure described interference based on carrier wave；For the interference of described measurement,
Determine corresponding interference threshold；And it is based on described interference threshold, determine described CCA energy
Detection threshold.
It may be noted that carrier wave of herein mourning in silence means not use this carrier-wave transmission information, that is,
This carrier wave is set to blank.
According to the exemplary embodiment of the disclosure, described interference includes following at least one：Fortune
Interference, Wi-Fi interference and total interference between battalion's business's internal interference, operator.
According to the exemplary embodiment of the disclosure, wherein mourn in silence to measure described interference based on carrier wave
Including：Mourn in silence respectively one or multiple subcarriers different from each other, to obtain corresponding operator
Interference, Wi-Fi interference and total interference between internal interference, operator.
According to the exemplary embodiment of the disclosure, mourn in silence respectively one or many height different from each other
Carrier wave, to obtain between corresponding operator internal interference, operator interference, Wi-Fi interference and total
Interference includes：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
In other operators described operator between interference disturb sum with described Wi-Fi；
For example, for a LAA operator (for example, operator A) first carrier of mourning in silence,
So that operator A can measure the operation from other operators (for example, operator B)
Disturb between business.The first carrier equally it is also possible to the operator B being directed in LAA mourns in silence, with
Operator B is allow to measure interference between the operator of operator A.
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and described second subcarrier is different from described first subcarrier；
For example, one or more subcarriers that whole operators are mourned in silence thereon are introduced, this
Sample just allows operator A and operator B to measure Wi-Fi interference, this is because now only
There is Wi-Fi can transmit on this subcarrier.
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, described 3rd subcarrier is different from described first subcarrier and described second subcarrier；
For example, introduce a normal subcarrier, to execute total interferometry.In the case,
This subcarrier should not be mourned in silence by any operator, with guarantee all from LAA and Wi-Fi
Interference can be measured to.
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference, i.e. by by the Wi-Fi measuring interference between the operator measuring interference with
Deduct to obtain interference between operator in Wi-Fi interference sum；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference,
That is, total from measure with Wi-Fi interference sum by interference between the operator that just measures
Deduct in interference to obtain operator's internal interference.
According to the exemplary embodiment of the disclosure, wherein it is directed to the interference of described measurement, it is right to determine
The interference threshold answered includes：Determine and correspond respectively to described operator internal interference, described operator
Between interference and described Wi-Fi interference operator internal interference threshold value (Tintra-operator LAA), fortune
Interference threshold (T between battalion businessinter-operator LAA) and Wi-Fi interference threshold (TWi-Fi)；
According to the exemplary embodiment of the disclosure, wherein it is based on described interference threshold, determine described
CCA energy measuring thresholding includes：By between operator's internal interference threshold value of described determination, operator
Interference threshold and Wi-Fi interference threshold and the actual value of operator's internal interference measuring, operator
Between interference value and Wi-Fi interference value be compared respectively；And the knot based on described comparison
Fruit determines described CCA energy measuring thresholding.
Wherein, channeling -1 in above three interference threshold it is contemplated that in operator,
Therefore described operator internal interference threshold value is set to maximum, and excellent in view of Wi-Fi system
First need to protect, therefore described Wi-Fi interference threshold is set to minimum, i.e.
Tintra-operator LAA>Tinter-operator LAA>TWi-Fi.
According to the exemplary embodiment of the disclosure, wherein it is based on described result of the comparison determination described
CCA energy measuring thresholding includes：
When the value of () Wi-Fi interference in actual measurement is more than described Wi-Fi interference threshold a,
Described Wi-Fi interference threshold is defined as described CCA energy measuring thresholding；
B the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is more than interference threshold between described operator
When, interference threshold between described operator is defined as described CCA energy measuring thresholding；And
C the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is less than or equal between described operator
During interference threshold, described operator internal interference threshold value is defined as described CCA energy measuring door
Limit.
The second aspect of the disclosure provides a kind of access in mandate auxiliary and is based on interference in LAA
The method to strengthen downstream modulation for the measurement, the method includes：Mourned in silence based on carrier wave described to measure
Interference；And remove the interference of described measurement from the signal receiving, to strengthen downstream modulation.
According to the exemplary embodiment of the disclosure, described interference includes following at least one：Fortune
Interference, Wi-Fi interference and total interference between battalion's business's internal interference, operator.
According to the exemplary embodiment of the disclosure, wherein mourn in silence to measure described interference based on carrier wave
Including：Mourn in silence one or multiple subcarriers different from each other, with obtain operator's internal interference,
At least one in interference, Wi-Fi interference and total interference between operator.
According to the exemplary embodiment of the disclosure, wherein mourn in silence one or different from each other multiple
Subcarrier, to obtain interference between operator's internal interference, operator, Wi-Fi interference and total interference
In at least one inclusion：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
Between the described operator of other operators, interference and described Wi-Fi disturb sum；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and wherein said second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
The third aspect of the disclosure provides in a kind of LAA and determines CCA based on interferometry
The equipment of energy measuring thresholding, using this equipment, CCA energy measuring thresholding can utilize carrier wave
Mourn in silence and be adaptively adjusted based on the interference measuring actual at OFDM symbol.Should
Equipment includes：Interferometry unit, for mourning in silence to measure described interference based on carrier wave；Interference
Threshold value determination unit, for the interference for described measurement, determines corresponding interference threshold；With
And CCA energy measuring thresholding determining unit, described for based on described interference threshold, determining
CCA energy measuring thresholding.
According to the exemplary embodiment of the disclosure, described interference includes following at least one：Fortune
Interference, Wi-Fi interference and total interference between battalion's business's internal interference, operator.
According to the exemplary embodiment of the disclosure, wherein said interferometry unit wraps further
Include：Carrier wave is mourned in silence unit, for one or more subcarriers different from each other of mourning in silence respectively；With
And interferometry subelement, for obtain between corresponding operator internal interference, operator interference,
Wi-Fi interference and total interference.
According to the exemplary embodiment of the disclosure, described carrier wave is mourned in silence unit and described interferometry
Subelement is configured to following every acquisition and does between corresponding operator internal interference, operator
Disturb, Wi-Fi disturbs and total interference：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
In other operators described operator between LAA interference disturb sum with described Wi-Fi；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and described second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, described 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
According to the exemplary embodiment of the disclosure, described interference threshold determining unit is wrapped further
Include：Interference threshold determination subelement, for determine correspond respectively to described operator internal interference,
Between described operator between operator's internal interference threshold value of interference and described Wi-Fi interference, operator
Interference threshold and Wi-Fi interference threshold.
According to the exemplary embodiment of the disclosure, described CCA energy measuring thresholding determining unit
Including：Comparing unit, for doing between operator's internal interference threshold value of described determination, operator
Disturb between threshold value and Wi-Fi interference threshold and the actual value of operator's internal interference measuring, operator
The value of the value of interference and Wi-Fi interference is compared respectively；And CCA energy measuring thresholding
Determination subelement, for determining described CCA energy measuring thresholding based on described result of the comparison.
Wherein, in above three interference threshold, between described operator, interference threshold is set to
Maximum, and described Wi-Fi interference threshold is set to minimum, i.e. Tintra-operator LAA>
Tinter-operator LAA>TWi-Fi.
According to the exemplary embodiment of the disclosure, wherein said comparing unit and described CCA energy
Amount detection threshold determination subelement is configured to determine described CCA energy inspection based on following items
Survey thresholding：
When the value of () Wi-Fi interference in actual measurement is more than described Wi-Fi interference threshold a,
Described Wi-Fi interference threshold is defined as described CCA energy measuring thresholding；
B the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is more than interference threshold between described operator
When, interference threshold between described operator is defined as described CCA energy measuring thresholding；And
C the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is less than or equal between described operator
During interference threshold, described operator internal interference threshold value is defined as described CCA energy measuring door
Limit.
The fourth aspect of the disclosure provides a kind of access in mandate auxiliary and is based on interference in LAA
Measure and to strengthen the equipment of downstream modulation, including：Interferometry unit, for quiet based on carrier wave
Write from memory to measure described interference；And downstream modulation enhancement unit, for from the signal receiving
Remove the interference of described measurement, to strengthen downstream modulation.
According to the exemplary embodiment of the disclosure, described interference includes following at least one：Fortune
Interference, Wi-Fi interference and total interference between battalion's business's internal interference, operator.
According to the exemplary embodiment of the disclosure, wherein interferometry unit includes：Carrier wave is mourned in silence
Unit, for or the multiple subcarriers different from each other of mourning in silence, and interferometry is single
Unit, for obtaining in interference between operator's internal interference, operator, Wi-Fi interference and total interference
At least one.
According to the exemplary embodiment of the disclosure, wherein said carrier wave is mourned in silence unit and described interference
Measurement subelement is configured to following every acquisition corresponding operator internal interference, operator
Between interference, Wi-Fi interference and total disturb at least one：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
Between the described operator of other operators, interference and described Wi-Fi disturb sum；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and wherein said second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
Brief description
Accompanying drawing described herein is used for providing further understanding of the disclosure, constitutes the application
A part, the schematic description and description of the disclosure is used for explaining the disclosure, not structure
Become improper restriction of this disclosure.
Fig. 1 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
The flow chart determining the method for CCA energy measuring thresholding.
Fig. 2 show in accordance with an embodiment of the present disclosure for being mourned in silence based on carrier wave in LAA
Flow chart to measure the method for described interference.
Fig. 3 is in the case of operator's time synchronized, being used in accordance with an embodiment of the present disclosure
Example for the subcarrier maps figure of the interferometry of operator A.
Fig. 4 is in the case of operator's time synchronized, being used in accordance with an embodiment of the present disclosure
Example for the subcarrier maps figure of the interferometry of operator B.
Fig. 5 is in the case of operator's time irreversibility, use in accordance with an embodiment of the present disclosure
Example in the subcarrier maps figure of the interferometry for operator A.
Fig. 6 is in the case of operator's time irreversibility, use in accordance with an embodiment of the present disclosure
Example in the subcarrier maps figure of the interferometry for operator B.
Fig. 7 show in accordance with an embodiment of the present disclosure in LAA be based on comparative result
The flow chart determining the method for CCA energy measuring thresholding.
Fig. 8 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
Flow chart to strengthen the method for downstream modulation.
Fig. 9 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
Determine the block diagram of the equipment of CCA energy measuring thresholding.
Figure 10 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
To strengthen the block diagram of the equipment of downstream modulation.
Specific embodiment
The principle to describe the disclosure for some example embodiment shown in below with reference to the accompanying drawings.
It should be appreciated that describing these embodiments merely to enabling those skilled in the art more preferably geographical
Solve and then realize the disclosure, and not limit the scope of the present disclosure by any way.
Fig. 1 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
The flow chart determining the method 100 of CCA energy measuring thresholding.
As illustrated in fig. 1, method 100 includes：Mourn in silence to measure described interference based on carrier wave
S101；For the interference of described measurement, determine corresponding interference threshold S102；And be based on
Described interference threshold, determines described CCA energy measuring thresholding S103.
It may be noted that carrier wave of herein mourning in silence means not use this carrier-wave transmission information, that is,
This carrier wave is set to blank.
According to the exemplary embodiment of the disclosure, described interference mainly includes：Operator's internal interference
(Iintra-operator LAA), disturb (I between operatorinter-operator LAA), Wi-Fi interference (IWi-Fi)
With total interference (Itotal).
At step S101 of method 100, according to the exemplary embodiment of the disclosure, difference
Mourn in silence one or multiple subcarriers different from each other, dry in corresponding described operator to obtain
Disturb, at least one of interference, described Wi-Fi interference and described total interference between described operator.
Fig. 2 be show in further detail in accordance with an embodiment of the present disclosure in LAA
Mourned in silence the method to measure described interference (i.e. step S101 in method 100) based on carrier wave
200 flow chart.
As shown in Fig. 2 mourn in silence respectively one or multiple subcarriers different from each other, to obtain phase
Interference, described Wi-Fi interference bag and institute between the described operator internal interference answered, described operator
State total interference and include following sub-step S201-S205：
At S201：For a LAA operator, the first subcarrier of mourning in silence, to measure
From in LAA, between the described operator of other operators, interference and described Wi-Fi disturb sum
(that is, Iinter-operator LAA+IWi-Fi)；For example, for a LAA operator (for example,
Operator A) one or more carrier waves of mourning in silence, so that operator A can measure from other
Disturb between the operator of battalion business (for example, operator B).As shown in figure 3, for operator
Subcarrier #3 quilt for A, in a Physical Resource Block (PRB) (12 subcarriers)
Most blank and do not have data to transmit on this subcarrier, so so that operator A is permissible
Measurement is derived from the interference of (that is, operator B) between operator.Equally it is also possible to be directed to LAA
In operator B mourn in silence one or more carrier waves, so that operator B can measure being derived from
Disturb between the operator of operator A.As shown in figure 4, for operator B, one
Subcarrier #5 in individual PRB (12 subcarriers) by most blank and does not have data in this son
Transmit on carrier wave, so so that operator B can measure between operator LAA (i.e.,
Operator A) interference.
At S202：For all of LAA operator, the second subcarrier of mourning in silence, to measure
Described Wi-Fi disturbs (IWi-Fi), described second subcarrier is different from described first subcarrier；Example
As introduced one or more subcarriers that whole operators are mourned in silence thereon.This situation
Under, due to now only having Wi-Fi can transmit on this subcarrier, hence in so that operator A
Wi-Fi interference can be measured with operator B.As shown in Figure 3 and Figure 4, whole fortune are introduced
The subcarrier that battalion business is mourned in silence thereon.For each operator, in a PRB
Subcarrier #9 in (12 subcarriers) is set to blank and does not have data on this subcarrier
Transmission, such mode allows operator A and operator B to measure Wi-Fi interference.Need
It is to be noted, that in the case of Liang Ge operator is nonsynchronous in time, this subcarrier can be every
By the interference being derived from Wi-Fi with more preferable measurement of mourning in silence, such as Fig. 5 and Tu at individual OFDM symbol
Shown in 6.
At S203：For all of LAA operator, the 3rd subcarrier of not mourning in silence, to survey
Amount is total to disturb (Itotal), described 3rd subcarrier is different from described first subcarrier and described second
Subcarrier；For example, introduce a normal subcarrier, to execute total interferometry.In this situation
Under, this subcarrier should not be mourned in silence by any operator, with guarantee all from LAA and Wi-Fi
Interference can be measured to.As shown in Figure 3 and Figure 4, for each operator, one
Subcarrier #7 in individual PRB (12 subcarriers) is not blank and known to have data at this
Transmit on subcarrier, guarantee that all interference from LAA and Wi-Fi can by this way
Enough it is measured to.
At S204：Disturb between the described operator being measured in S201 according to described step
The described Wi-Fi that sum and described step measure in S202 is disturbed to disturb with described Wi-Fi
Difference, determine between described operator interference, i.e. by by the Wi-Fi measuring interference from
Between the operator measuring, interference and Wi-Fi disturb to deduct in sum to obtain and do between operator
Disturb.
At S205：According to described step measure in S203 described total interference with described
Between the described operator measuring in step S201, interference and described Wi-Fi disturb the difference of sum
Value, determine described operator internal interference, i.e. by by between the operator measuring interference with
Wi-Fi interference sum deducts to obtain operator's internal interference from the total interference measuring.
Those skilled in the art is it should be appreciated that be used for the T/F of empty sub-carriers
Resource is configurable.For example, in order to reduce expense, empty sub-carriers can be limited in be had
In the OFDM symbol of limit.The OFDM symbol of interferometry can be flexibly configured to.
The number of the OFDM symbol for interferometry if possible reduces, then can improve number
According to efficiency of transmission.When interferometry completes, the OFDM for interferometry if possible
The number of symbol increases, then CCA energy measuring thresholding regulation can be in each OFDM symbol
Place more " dynamic " realizes.Thus, it will be seen that in data transmission efficiency and energy measuring
The thresholding regulating frequency time exists compromise.
It may be noted that although this gives between step S201, S202 and S203
Particular order, but those skilled in the art can be between step S201, S202 and S203
Order carry out arbitrary arrangement.Same although this gives step S204 and S205
Between particular order but it is also possible to carry out arbitrarily to the order between step S204 and S205
Arrangement.
Next, method 100 proceeds at step S102, according to the exemplary reality of the disclosure
Apply example, determine and correspond respectively to disturb and described between described operator internal interference, described operator
The operator internal interference threshold value (T of Wi-Fi interferenceintra-operator LAA), interference threshold between operator
(Tinter-operator LAA) and Wi-Fi interference threshold (TWi-Fi).
Next, method 100 proceeds at step S103, by the operator of described determination
Interference threshold and Wi-Fi interference threshold and the actual operator measuring between interference threshold, operator
Value (the I of internal interferenceintra-operator LAA), between operator interference value (Iinter-operator LAA) and
Value (the I of Wi-Fi interferenceWi-Fi) be compared respectively；And it is true based on described result of the comparison
Fixed described CCA energy measuring thresholding (TCCA).
Wherein, channeling -1 in above three interference threshold it is contemplated that in operator,
Therefore described operator internal interference threshold value is set to maximum, and excellent in view of Wi-Fi system
First need to protect, therefore described Wi-Fi interference threshold is set to minimum, i.e.
Tintra-operator LAA>Tinter-operator LAA>TWi-Fi.
It should be pointed out that can at each OFDM symbol using the subcarrier mourned in silence (such as
OFDM symbol #1, #4 shown in Fig. 3 and Fig. 4, #8 and #11) measuring interference,
And the energy measuring thresholding of CAA is adjusted based on the interference measuring.So, adjusted
CCA energy measuring thresholding can be in subcarrier that is subsequent, normal, not mourning in silence
OFDM symbol (other OFDM symbol #2, #3 as shown in Figure 4 and Figure 5, #5, #6,
#7, #9, #10, #12, #13, #14) in be used for LBT.For example, if interference exists
It is measured at OFDM symbol #1, then can be based on and be measured at OFDM symbol #1
Interference come at subsequent OFDM symbol #2 and symbol #3 set for LBT CCA
Energy measuring thresholding, to realize the dynamic adjustment of CCA.
Fig. 7 be show in further detail in accordance with an embodiment of the present disclosure in LAA
CCA energy measuring thresholding (i.e. step S103 in method 100) is determined based on comparative result
Method flow chart.
As shown in fig. 7, described CCA energy measuring thresholding is determined based on described result of the comparison
Including following sub-step S701-S705：
A the value of () described Wi-Fi interference in response to measuring is more than described Wi-Fi energy inspection
Survey result S701 of thresholding, described Wi-Fi energy measuring thresholding is defined as described CCA energy
Amount detection threshold S702, otherwise, proceeds to next step (b)；
B () is more than between described operator in response to the value of interference between the described operator that measures
Interference threshold S703, interference threshold between described operator is defined as described CCA energy measuring
Thresholding S704；Otherwise, proceed to next step (c)；
C described operator internal interference threshold value is defined as described CCA energy measuring thresholding by ()
S705.
By drawings above and embodiment it can be seen that using this main based on measure
Disturb and dynamically adjust the mode of CCA energy measuring thresholding, can effectively protect and preferentially need
(or most sensitive to disturbing) to be protected Wi-Fi system, and can be LAA-LTE simultaneously
Keep higher access probability and the utilization of resources.
Fig. 8 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
Flow chart to strengthen the method 800 of downstream modulation.
As shown in figure 8, method 800 includes：Mourn in silence to measure described interference S801 based on carrier wave；
And remove the interference of described measurement from the signal receiving, to strengthen downstream modulation S802.
According to the exemplary embodiment of the disclosure, described interference includes following at least one：Fortune
Interference, Wi-Fi interference and total interference between battalion's business's internal interference, operator.
According to the exemplary embodiment of the disclosure, S801 includes：Mourn in silence one or each other not
Same multiple subcarriers, to obtain interference between operator's internal interference, operator, Wi-Fi interference
With at least one in total interference.
According to the exemplary embodiment of the disclosure, wherein mourn in silence one or different from each other multiple
Subcarrier, to obtain interference between operator's internal interference, operator, Wi-Fi interference and total interference
In at least one inclusion：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
Between the described operator of other operators, interference and described Wi-Fi disturb sum；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and wherein said second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
For example, the total interference measuring on normal carrier wave is (as shown in Fig. 3 to Fig. 6
In a PRB (12 subcarriers), be presented on OFDM symbol #1, #4, #8 and
Subcarrier #7 in #11) can be used for strengthening PDSCH demodulation, this is because can be from
In the signal receiving, the total interference measuring is deducted.
The interference properties of the explosion type due to experiencing in an unlicensed spectrum, are therefore directed in subframe
The interference volume of each OFDM symbol may be different.For example, end Wi-Fi packet may
Affect multiple subframes.Being estimated using the noise/interference for channel estimation carrying out self-generated reference signal can
Cannot can catch the slight change in the interference seen by the distinct symbols of subframe exactly.Due to
Downstream modulation performance has stronger dependency to the Interference Estimation of each symbol, therefore, at this
This accuracy that improve Interference Estimation based on the interferometry that carrier wave is mourned in silence proposing in literary composition
And and then actual measure more accurate interference and to increase by deducting from the signal receiving
Strong downstream modulation.
Fig. 9 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
Determine the block diagram 900 of the equipment of CCA energy measuring thresholding.
As illustrated in fig. 9, described equipment includes：Interferometry unit 901, for based on load
Ripple mourns in silence to measure described interference；Interference threshold determining unit 902, for for described measurement
Interference, determine corresponding interference threshold；And CCA energy measuring thresholding determining unit 903,
For based on described interference threshold, determining described CCA energy measuring thresholding.
According to the exemplary embodiment of the disclosure, described interference includes following at least one：Fortune
Interference, Wi-Fi interference and total interference between battalion's business's internal interference, operator.
According to the exemplary embodiment of the disclosure, wherein said interferometry unit 901 is further
Including：Carrier wave is mourned in silence unit, for one or more subcarriers different from each other of mourning in silence respectively；
And interferometry subelement, for obtain between corresponding operator internal interference, operator interference,
Wi-Fi interference and total interference.
According to the exemplary embodiment of the disclosure, described carrier wave is mourned in silence unit and described interferometry
Subelement is configured to following every acquisition and does between corresponding operator internal interference, operator
Disturb, Wi-Fi interference and total disturb at least one：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
In other operators described operator between LAA interference disturb sum with described Wi-Fi；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and described second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, described 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
According to the exemplary embodiment of the disclosure, described interference threshold determining unit 902 is further
Including：Interference threshold determination subelement, for determine correspond respectively to described operator internal interference,
Between described operator between operator's internal interference threshold value of interference and described Wi-Fi interference, operator
Interference threshold and Wi-Fi interference threshold.
According to the exemplary embodiment of the disclosure, described CCA energy measuring thresholding determining unit
903 include：Comparing unit, for by operator's internal interference threshold value of described determination, operator
Between the value of operator's internal interference of interference threshold and Wi-Fi interference threshold and actual measurement, operation
Between business, the value of the value of interference and Wi-Fi interference is compared respectively；And CCA energy measuring
Thresholding determination subelement, for determining described CCA energy measuring based on described result of the comparison
Thresholding.
Wherein, channeling -1 in above three interference threshold it is contemplated that in operator,
Therefore described operator internal interference threshold value is set to maximum, and excellent in view of Wi-Fi system
First need to protect, therefore described Wi-Fi interference threshold is set to minimum, i.e.
Tintra-operator LAA>Tinter-operator LAA>TWi-Fi.
According to the exemplary embodiment of the disclosure, wherein said comparing unit and described CCA energy
Amount detection threshold determination subelement is configured to determine described CCA energy inspection based on following items
Survey thresholding：
When the value of () Wi-Fi interference in actual measurement is more than described Wi-Fi interference threshold a,
Described Wi-Fi interference threshold is defined as described CCA energy measuring thresholding；
B the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is more than interference threshold between described operator
When, interference threshold between described operator is defined as described CCA energy measuring thresholding；And
C the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is less than or equal between described operator
During interference threshold, described operator internal interference threshold value is defined as described CCA energy measuring door
Limit.
Figure 10 show in accordance with an embodiment of the present disclosure in LAA be based on interferometry
To strengthen the block diagram 1000 of the equipment of downstream modulation.
As shown in Figure 10, equipment 1000 includes：Interferometry unit 1001, for based on load
Ripple mourns in silence to measure described interference；And downstream modulation enhancement unit 1002, for from receiving
Signal in remove the interference of described measurement, to strengthen downstream modulation.
According to the exemplary embodiment of the disclosure, described interference includes following at least one：Fortune
Interference, Wi-Fi interference and total interference between battalion's business's internal interference, operator.
According to the exemplary embodiment of the disclosure, wherein interferometry unit 1001 includes：Carry
Ripple is mourned in silence unit, and for or the multiple subcarriers different from each other of mourning in silence, and interference is surveyed
Quantum boxes, for obtaining between operator's internal interference, operator interference, Wi-Fi interference and total
At least one in interference.
According to the exemplary embodiment of the disclosure, wherein said carrier wave is mourned in silence unit and described interference
Measurement subelement is configured to following every acquisition corresponding operator internal interference, operator
Between interference, Wi-Fi interference and total disturb at least one：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
Between the described operator of other operators, interference and described Wi-Fi disturb sum；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and wherein said second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
In sum, embodiment of the disclosure disclose in a kind of LAA be based on interferometry
Determine CCA energy measuring thresholding and strengthen the method and apparatus of downstream modulation.By using upper
State the method for the interferometry mourned in silence based on carrier wave so that improving downstream modulation, and certainly simultaneously
Adaptively adjust CCA energy measuring thresholding to guarantee between LAA-LTE system and Wi-Fi system
Good coexists.
The foregoing is only the alternative embodiment of the disclosure, be not limited to the disclosure, right
For those skilled in the art, the disclosure can have various modifications and variations.All in this public affairs
Within the spirit opened and principle, any modification of being made, equivalence replacement, improvement etc., all should wrap
It is contained within the protection domain of the disclosure.
Claims (24)
1. one kind determines idle channel based on interferometry in authorizing auxiliary access LAA and comments
The method estimating CCA energy measuring thresholding, including：
Mourn in silence to measure described interference based on carrier wave；And
For the interference of described measurement, determine corresponding interference threshold；And
Based on described interference threshold, determine described CCA energy measuring thresholding.
2. method according to claim 1, described interference includes following at least one：
Interference, Wi-Fi interference and total interference between operator's internal interference, operator.
3. method according to claim 1, is wherein mourned in silence based on carrier wave described dry to measure
Disturb including：
Mourn in silence one or multiple subcarriers different from each other, to obtain operator's internal interference, fortune
At least one in interference, Wi-Fi interference and total interference between battalion business.
4. method according to claim 3, wherein mourns in silence one or different from each other many
Individual subcarrier, to obtain interference between operator's internal interference, operator, Wi-Fi interference and always to do
At least one inclusion in disturbing：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
Between the described operator of other operators, interference and described Wi-Fi disturb sum；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and wherein said second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
5. method according to claim 2, is wherein directed to the interference of described measurement, determines
Corresponding interference threshold includes：
Determine and correspond respectively to disturb and described between described operator internal interference, described operator
Interference threshold and Wi-Fi interference threshold between operator's internal interference threshold value of Wi-Fi interference, operator
Value.
6. method according to claim 2, is wherein based on described interference threshold, determines institute
State CCA energy measuring thresholding to include：
Interference threshold and Wi-Fi between operator's internal interference threshold value of described determination, operator are done
Disturb the value of interference and Wi-Fi between threshold value and the actual value of operator's internal interference measuring, operator
The value of interference is compared respectively；And
Based on described result of the comparison, determine described CCA energy measuring thresholding.
7. method according to claim 6, between wherein said operator, interference threshold is set
It is set to maximum, and described Wi-Fi interference threshold is set to minimum.
8. method according to claim 6, is wherein based on described result of the comparison, determines
Described CCA energy measuring thresholding includes：
When the value of () Wi-Fi interference in actual measurement is more than described Wi-Fi interference threshold a,
Described Wi-Fi interference threshold is defined as described CCA energy measuring thresholding；
B the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is more than interference threshold between described operator
When, interference threshold between described operator is defined as described CCA energy measuring thresholding；And
C the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is less than or equal between described operator
During interference threshold, described operator internal interference threshold value is defined as described CCA energy measuring door
Limit.
9. a kind of access in LAA in mandate auxiliary strengthens downstream modulation based on interferometry
Method, including：
Mourn in silence to measure described interference based on carrier wave；And
Remove the interference of described measurement from the signal receiving, to strengthen downstream modulation.
10. method according to claim 9, described interference includes following at least one：
Interference, Wi-Fi interference and total interference between operator's internal interference, operator.
11. methods according to claim 9, are wherein mourned in silence based on carrier wave described to measure
Interference includes：
Mourn in silence one or multiple subcarriers different from each other, to obtain operator's internal interference, fortune
At least one in interference, Wi-Fi interference and total interference between battalion business.
12. methods according to claim 11, wherein mourn in silence one or different from each other
Multiple subcarriers, to obtain between operator's internal interference, operator interference, Wi-Fi interference and total
At least one inclusion in interference：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
Between the described operator of other operators, interference and described Wi-Fi disturb sum；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and wherein said second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
13. one kind determine idle channel based on interferometry in authorizing auxiliary access LAA
The equipment of assessment CCA energy measuring thresholding, described equipment includes：
Interferometry unit, for mourning in silence to measure described interference based on carrier wave；
Interference threshold determining unit, for the interference for described measurement, determines corresponding interference
Threshold value；And
CCA energy measuring thresholding determining unit, described for based on described interference threshold, determining
CCA energy measuring thresholding.
14. equipment according to claim 13, described interference includes following at least one
Kind：
Interference, Wi-Fi interference and total interference between operator's internal interference, operator.
15. equipment according to claim 13, wherein said interferometry unit is further
Including：
Carrier wave is mourned in silence unit, for or the multiple subcarriers different from each other of mourning in silence；And
Interferometry subelement, for obtain between corresponding operator internal interference, operator interference,
At least one in Wi-Fi interference and total interference.
16. equipment according to claim 15, described carrier wave is mourned in silence unit and described interference
Measurement subelement is configured to following every acquisition corresponding operator internal interference, operator
Between interference, Wi-Fi interference and total disturb at least one：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
In other operators described operator between LAA interference disturb sum with described Wi-Fi；
B () is directed to all LAA operators, the second subcarrier of mourning in silence, to measure described Wi-Fi
Interference, wherein said second subcarrier is different from described first subcarrier；
C () is directed to all LAA operators, the 3rd subcarrier of not mourning in silence, always disturbed with measuring,
Wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
17. equipment according to claim 14, wherein said interference threshold determining unit is entered
One step includes：
Interference threshold determination subelement, for determine correspond respectively to described operator internal interference,
Between described operator between operator's internal interference threshold value of interference and described Wi-Fi interference, operator
Interference threshold and Wi-Fi interference threshold.
18. equipment according to claim 14, wherein said CCA energy measuring thresholding
Determining unit includes：
Comparing unit, for disturbing between operator's internal interference threshold value of described determination, operator
Dry between the value of operator's internal interference of threshold value and Wi-Fi interference threshold and actual measurement, operator
The value of the value disturbed and Wi-Fi interference is compared respectively；And
CCA energy measuring thresholding determination subelement, for determining institute based on described result of the comparison
State CCA energy measuring thresholding.
19. equipment according to claim 18, interference threshold quilt between wherein said operator
It is set as maximum, and described Wi-Fi interference threshold is set to minimum.
20. equipment according to claim 18, wherein said comparing unit and described CCA
Energy measuring thresholding determination subelement is configured to based on the described CCA energy of following every determination
Detection threshold：
When the value of () Wi-Fi interference in actual measurement is more than described Wi-Fi interference threshold a,
Described Wi-Fi interference threshold is defined as described CCA energy measuring thresholding；
B the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is more than interference threshold between described operator
When, interference threshold between described operator is defined as described CCA energy measuring thresholding；And
C the value of () Wi-Fi interference in actual measurement is less than or equal to described Wi-Fi interference
Between threshold value, and the operator of actual measurement, the value of interference is less than or equal between described operator
During interference threshold, described operator internal interference threshold value is defined as described CCA energy measuring door
Limit.
21. one kind strengthen downstream modulation based on interferometry in authorizing auxiliary access LAA
Equipment, including：
Interferometry unit, for mourning in silence to measure described interference based on carrier wave；And
Downstream modulation enhancement unit, for removing the dry of described measurement from the signal receiving
Disturb, to strengthen downstream modulation.
22. equipment according to claim 21, described interference includes following at least one
Kind：
Interference, Wi-Fi interference and total interference between operator's internal interference, operator.
23. methods according to claim 21, wherein interferometry unit includes：
Carrier wave is mourned in silence unit, for or the multiple subcarriers different from each other of mourning in silence, and
Interferometry subelement, for obtaining interference, Wi-Fi between operator's internal interference, operator
At least one in interference and total interference.
24. equipment according to claim 23, wherein said carrier wave is mourned in silence unit and described
Interferometry subelement is configured to following every acquisition corresponding operator internal interference, fortune
At least one in interference, Wi-Fi interference and total interference between battalion business：
A () is directed to a LAA operator, the first subcarrier of mourning in silence, be derived from LAA to measure
Between the described operator of other operators, interference and described Wi-Fi disturb sum；
B () is directed to all of LAA operator, the second subcarrier of mourning in silence, described in measuring
Wi-Fi disturbs, and wherein said second subcarrier is different from described first subcarrier；
C () is directed to all of LAA operator, the 3rd subcarrier of not mourning in silence, always done with measuring
Disturb, wherein said 3rd subcarrier is different from described first subcarrier and described second subcarrier；
D () is according to interference between the described operator measuring in (a) and described Wi-Fi interference
The difference of the described Wi-Fi interference measuring in sum and (b), determines between described operator
Interference；And
E () is according to measure in the described total interference measuring in (c) and (a)
Between operator, interference and described Wi-Fi disturb the difference of sum, determine described operator internal interference.
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| CN111866915A (en) * | 2020-07-22 | 2020-10-30 | 北京理工大学 | Method for designing ED threshold in unlicensed spectrum coexistence system based on beam transmission |
| 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 |
| WO2023011106A1 (en) * | 2021-08-05 | 2023-02-09 | 华为技术有限公司 | Communication method and apparatus |
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