CN105682102B - One kind exempting from authorization channel contention parameter generation method and device - Google Patents
One kind exempting from authorization channel contention parameter generation method and device Download PDFInfo
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- CN105682102B CN105682102B CN201610153753.5A CN201610153753A CN105682102B CN 105682102 B CN105682102 B CN 105682102B CN 201610153753 A CN201610153753 A CN 201610153753A CN 105682102 B CN105682102 B CN 105682102B
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- 238000013475 authorization Methods 0.000 title claims abstract description 67
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
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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
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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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
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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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
This application discloses one kind to exempt from authorization channel contention parameter generation method and device.When the base station LAA is currently without in competitive channel, and no need to send when discovery reference signal, the weight of of the invention and each corresponding contention parameter of business to be dispatched and each business to be dispatched generates the current contention parameter in the base station LAA.It can be seen that, the present invention is by comprehensively considering the corresponding different contention parameters of LTE business datum to be dispatched in unlicensed band, generate the contention parameter of base station competition unlicensed band, on the one hand avoid LTE always with preferably contention parameter competitive channel, and to other access technologies unfairness, on the other hand the business demand for having also contemplated different priorities, avoids the influence to time delay sensitive traffic.
Description
Technical field
This application involves fields of communication technology, exempt from authorization channel contention parameter generation method more specifically to one kind
And device.
Background technique
As the rapid development of intelligent movable equipment, the rapid emergence of high-resolution multimedia stream business and internet go deep into
All trades and professions etc. are arrived, the traffic explosive growth of mobile data services, existing authorized spectrum band is not enough to provide enough
Network capacity meets user demand.Data service, which is diverted to unlicensed band (such as 5GHz), can alleviate network pressure, such as
Where authorize under the auxiliary of frequency spectrum using authorization frequency spectrum resource is exempted from, becomes current important one of the research topic of 3GPP.
Under normal conditions, the technology of authorized spectrum band, such as LTE (Long Term Evolution, long term evolution) and uncomfortable
Conjunction uses in unlicensed band, because this kind of technology of LTE has very high want to spectrum efficiency and user experience optimization
It asks.However, the appearance of CA (Carrier Aggregation, carrier wave polymerization) function in unlicensed band deployment LTE so that become
It may.3GPP proposes the general of LAA (Licensed Assisted Access, the access of authorization auxiliary) technology based on CA framework
It reads, so that LTE is linked into unlicensed band by the auxiliary of authorized spectrum band, and then use unlicensed band resource transmission LTE data.
For LAA, the data transmission between the base station LAA and terminal is one-to-many.Different business may be different
Initial competitor parameter.So how the base station LAA determines that final channel competition parameter is urgent need to resolve problem.
If the base station LAA uses the corresponding contention parameter of the higher business of priority, receives also not expand after NACK and move back
Window is kept away, this is conducive to LAA and goes to seize unlicensed band, however is inequitable for other access technologies (such as Wi-Fi), and
The probability for also resulting in data collision increases.If the base station LAA uses the corresponding contention parameter of business of low priority, and only
There are data to retransmit then using double backoff window, this meeting is so that the time delay that LTE seizes channel expands, thus to new biography is needed
The business of high priority and delay sensitive brings adverse effect.
It is that the base station LAA competes the reasonable competition of unlicensed band generation each time therefore, it is necessary to design a solution
Parameter.Make the base station LAA when once dispatching multiple terminal traffics, on the one hand can guarantee to exempt from other access technology Fairshares
On the other hand authorized spectrum band can satisfy each terminal traffic requirement.
Summary of the invention
In view of this, the application, which provides one kind, exempts from authorization channel contention parameter generation method and device, by comprehensively considering
The corresponding different contention parameters of LTE business datum to be dispatched in unlicensed band, generate the competing of base station competition unlicensed band
Parameter is striven, on the one hand avoids LTE always with preferably contention parameter competitive channel, and to other access technologies unfairness, it is another
Aspect has also contemplated the business demand of different priorities, avoids the influence to time delay sensitive traffic.
To achieve the goals above, it is proposed that scheme it is as follows:
One kind exempting from authorization channel contention parameter generation method, comprising:
Judge whether the base station LAA currently believes whether competitive channel and the base station LAA currently need to send discovery reference
Number；
When the base station LAA is currently without in competitive channel, and the base station LAA is currently no need to send when discovery reference signal, then
Based on the currently corresponding contention parameter of business each to be dispatched and each the weight generation LAA of business to be dispatched in the base station LAA
The current contention parameter in base station.
Preferably, the method also includes:
When the base station LAA is currently without in competitive channel, and the base station LAA currently needs to send discovery reference signal, then base
The current contention parameter in the base station LAA is generated in the corresponding contention parameter of discovery reference signal.
Preferably, the method also includes:
When the base station LAA is currently in competitive channel, and the base station LAA currently needs to send discovery reference signal, then based on hair
The current contention parameter in the base station LAA is generated referring now to the corresponding contention parameter of signal and the contention parameter of the base station LAA last time.
Preferably, the method also includes:
When the base station LAA is currently in competitive channel, and the base station LAA is then based on currently no need to send when discovery reference signal
The contention parameter of the base station LAA last time generates the current contention parameter in the base station LAA.
Preferably, described to be based in the base station LAA the currently corresponding contention parameter of business each to be dispatched and each wait adjust
The weight of degree business generates the contention parameter of the base station LAA, comprising:
The weight of the business to be dispatched is configured according to the priority of the business to be dispatched；
The contention parameter of the statistics business to be dispatched, the contention parameter of the business to be dispatched include defer value,
Backoff window size and backoff value；
According to preset formula:
Calculate the current defer value in the base station LAA；
Wherein, αiIndicate the weight of i-th of business to be dispatched, deferiIndicate the defer value of i-th of business to be dispatched, N
Indicate the total number of business to be dispatched；
According to preset formula:
ni=log2(CWi+ 1),CW=2U- 1,
The current backoff window size in the base station LAA is calculated, wherein the current backoff window size in the base station LAA is [0,2U-1]；
CWiIt is the upper bound of the corresponding backoff window of i-th of business to be dispatched, CW indicates the corresponding backoff window in the current base station LAA
The upper bound, the lower bound of backoff window is always 0；
The current backoff value in the base station LAA is generated in the backoff window current from the base station LAA at random, or according to preset formulaThe current backoff value in the base station LAA is calculated, wherein TiIndicate the backoff value of i-th of business to be dispatched,
αiIndicate the weight of i-th of business to be dispatched.
Preferably, described based on the corresponding contention parameter of discovery reference signal and the contention parameter of the base station LAA last time
Generate the current contention parameter in the base station LAA, comprising:
Obtain the contention parameter defer value defer of discovery reference signalDRSAnd backoff value TDRSAnd the base station LAA last time
The contention parameter defer value defer of competitionoldAnd backoff value Told；
Compare the deferDRSWith the deferoldAnd the TDRSWith the Told；
By the deferDRSWith the deferoldIn the smallest defer value defer value current as the base station LAA；
By the TDRSWith the ToldIn the smallest backoff value backoff value current as the base station LAA.
Preferably, before the weight of the priority configuration business to be dispatched of the business to be dispatched according to, also
Include:
All business in the base station LAA are ranked up according to priority；
According to collating sequence to all business carry out resource allocation, and according to allocation result determine in all business wait adjust
Degree business.
One kind exempting from authorization channel contention parameter generating means, comprising:
First judging unit, for judging the base station LAA currently whether in competitive channel；
Second judgment unit, for judging whether the base station LAA currently needs to send discovery reference signal；
First contention parameter generation unit, for when the base station LAA is currently without in competitive channel, and the base station LAA is currently not
When needing to send discovery reference signal, then based on the corresponding contention parameter of business each to be dispatched current in the base station LAA and every
The weight of a business to be dispatched generates the current contention parameter in the base station LAA.
Preferably, further includes:
Second contention parameter generation unit, when the base station LAA is currently without in competitive channel, and the base station LAA currently needs to send out
When sending discovery reference signal, then the current contention parameter in the base station LAA is generated based on the corresponding contention parameter of discovery reference signal.
Preferably, further includes:
Third contention parameter generation unit, for working as the base station LAA currently in competitive channel, and the base station LAA currently needs to send out
When sending discovery reference signal, then based on the corresponding contention parameter of discovery reference signal and the contention parameter of the base station LAA last time
Generate the current contention parameter in the base station LAA；
4th contention parameter generation unit, for working as the base station LAA currently in competitive channel, and the base station LAA does not need currently
When sending discovery reference signal, then the contention parameter based on the base station the LAA last time generates the current contention parameter in the base station LAA.
As can be seen from the above technical solutions, this application discloses one kind to exempt from authorization channel contention parameter generation method and dress
It sets.It is of the invention and each wait adjust when the base station LAA is currently without in competitive channel, and no need to send when discovery reference signal
The weight of the corresponding contention parameter of degree business and each business to be dispatched generates the current contention parameter in the base station LAA.By
This is as it can be seen that the present invention is given birth to by comprehensively considering the corresponding different contention parameters of LTE business datum to be dispatched in unlicensed band
At the contention parameter of base station competition unlicensed band, on the one hand avoid LTE always with preferably contention parameter competitive channel, and it is right
Other access technologies are unfair, on the other hand have also contemplated the business demand of different priorities, avoid to time delay sensitive traffic
It influences.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 shows a kind of process for exempting from authorization channel contention parameter generation method disclosed in one embodiment of the invention and shows
It is intended to；
Fig. 2 shows the process signals for exempting from authorization channel contention parameter generation method disclosed in another embodiment of the present invention
Figure；
Fig. 3 shows a kind of process for exempting from authorization channel contention parameter generation method disclosed in another embodiment of the present invention
Schematic diagram；
Fig. 4 shows a kind of structure for exempting from authorization channel contention parameter generating means disclosed in another embodiment of the present invention
Schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of stream for exempting from authorization channel contention parameter generation method disclosed in one embodiment of the invention is shown referring to Fig. 1
Journey schematic diagram.
As shown in Figure 1, this method comprises:
S11: judge the base station LAA currently whether in competitive channel.
It should be noted that LTE is deployed to unlicensed band, it need to be total based on authorization access technology justice is exempted from other
The principle deposited.LTE must also monitor channel in unlicensed band, only detect channel idle ability busy channel,
And it cannot busy channel always.This is obviously different from the LTE mechanism in current grant frequency range, therefore LTE is in unlicensed band
On need to introduce a kind of competition mechanism, current 3GPP assists authorization access to propose to detect using based on idle channel in LTE
Session (Listen Before Talk, LBT) mechanism after the first monitoring of (Clear Channel Assessment, CCA), and mention
Go out two kinds of LBT: being based on the LBT of frame structure (Frame Based Equipment, abbreviation FBE) and based on load
The LBT of (Load Based Equipment, abbreviation LBE).It is main herein to consider LBE LBT.In LBE LBT, as long as node
There is data transmission, then CCA detection, the busy channel if channel idle is carried out to channel immediately.Otherwise it is calculated based on random back
Method generates backoff value and often detects a channel idle in channel competition, and backoff value accordingly subtracts 1.When backoff value is kept to 0
The success of busy channel immediately, i.e. channel competition.
As it can be seen that the backoff value of the base station LAA at this time is 0 when channel competition success；When competing failure, LAA freezes base station
Contention parameter (e.g., backoff value), to regenerate contention parameter in competition next time.
S12: judge whether the base station LAA currently needs to send discovery reference signal.
Discovery reference signal (Discovery Reference Signal, DRS) Lai Shixian in LAA reference Rel-12 exempts from
RRM (Radio Resource Management, wireless resource management) measurement of authorized spectrum band, cell identification, down-going synchronous,
Time-frequency estimation etc..In authorized spectrum band, base station controls frequency spectrum resource, the periodic transmission of DRS.And LTE is in unlicensed band
Upper introducing LBT mechanism, it is discontinuous, uncontrollable in the transmission in unlicensed band to make LTE, and transmit every time all
There is the limitation of maximum transmitted duration.If DRS sending instant reaches and base station fails to seize channel, DRS missing will lead to, eventually
End cannot detect the DRS of the LAA cell.If LAA cell cannot send DRS for a long time, it is quasi- to will lead to terminal measurement
Exactness reduces.For this purpose, needing to consider whether base station needs to send discovery reference this moment when the base station LAA is when generating contention parameter
Signal.
S13: when the base station LAA is currently without in competitive channel, and no need to send when discovery reference signal, then it is based on LAA
The corresponding contention parameter of current business each to be dispatched and each to generate the base station LAA current for the weight of business to be dispatched in base station
Contention parameter.
This application discloses one kind to exempt from authorization channel contention parameter generation method and device.When the base station LAA currently without
Competitive channel, and no need to send when discovery reference signal, of the invention and each corresponding competition of business to be dispatched is joined
The weight of several and each business to be dispatched generates the current contention parameter in the base station LAA.It can be seen that the present invention is examined by synthesis
Consider the corresponding different contention parameters of LTE business datum to be dispatched in unlicensed band, generates base station competition unlicensed band
On the one hand contention parameter avoids LTE always with preferably contention parameter competitive channel, and to other access technologies unfairness, separately
On the one hand the business demand for having also contemplated different priorities, avoids the influence to time delay sensitive traffic.
The process for exempting from authorization channel contention parameter generation method disclosed in another embodiment of the present invention is shown referring to fig. 2
Schematic diagram.It is specifically described in the present embodiment when the base station LAA is currently without in competitive channel, and the base station LAA does not need currently
When sending discovery reference signal, how based on the corresponding contention parameter of business each to be dispatched current in the base station LAA and each
The weight of business to be dispatched generates the current contention parameter in the base station LAA.
This method comprises:
S21: the weight of each business to be dispatched is configured according to the priority of each business to be dispatched.
When carrying out weight configuration to each scheduling business, basic principle is that the priority of business to be dispatched is higher,
Weight is bigger.
Such as, the weight factor of each business to be dispatched can be set as α1≤α2≤…≤αNAndα1,
α2,…,αNIt can generate by the following method: set αi=i × k, due toIt can obtainTo
It can obtain
Optionally, the business to be dispatched in all business in the base station LAA can be determined by a under type:
Firstly, being ranked up according to priority to all business in the base station LAA.
In turn, resource allocation is carried out to all business according to collating sequence, and is determined in all business according to allocation result
Business to be dispatched to get to the business of resource allocation be business to be dispatched.
S22: the contention parameter of each business to be dispatched of statistics, the contention parameter of business such as to be dispatched includes defer
Value, backoff window size and backoff value.
Wherein, when the business of dispatching has and retransmits data, it is that last base station competition uses that its backoff window size, which is arranged,
Twice of backoff window, defer value remain unchanged.
S23: according to the weight of each business to be dispatched and the defer value of each business to be dispatched, LAA benchmark is calculated
Defer value.
It, can be according to preset formula for the defer value of the base station LAA:
The current defer value in the base station LAA is calculated, which is not
Less than all weight factors and corresponding defer value be multiplied it is being added again and smallest positive integral.
Wherein, αiIndicate the weight of i-th of business to be dispatched, deferiIndicate the defer value of i-th of business to be dispatched, N
Indicate the total number of business to be dispatched.
S24: according to the weight of each business to be dispatched and the backoff window size of each business to be dispatched, LAA base is calculated
The backoff window size stood.
Since backoff window uses binary system index growth pattern, thus calculate all backoff window sizes first in the present invention
Corresponding 2 order, i.e. ni=log2(CWi+1)。
In turn, the order of the backoff window size corresponding 2 of all statistics, n are calculatedi=log2(CWi+ 1), wherein CWiIt is
The upper bound of the corresponding backoff window of i business to be dispatched.The lower bound of backoff window always 0.
The weighting of all orders is calculated, i.e.,It enablesFor not less thanSmallest positive integral, CW
=2U-1。
The backoff window of this base station LAA competitive channel is [0,2U-1]。
S25: the backoff value of the base station LAA is generated using presetting method.
Optionally, following two mode can be used for the backoff value of the base station LAA to obtain.
The first, backoff window [0,2 current according to the base station LAAU- 1] the current backoff value in the base station LAA is generated at random.
The second, it obtains each business to be dispatched and respectively corresponds to backoff value Ti.According to preset formulaThe current backoff value in the base station LAA is calculated, wherein TiIndicate the backoff value of i-th of business to be dispatched,
αiIndicate the weight of i-th of business to be dispatched.
It should be noted that needing to consider whether the current base station LAA is located when actually generating the base station LAA contention parameter
Currently whether need to send discovery reference signal in channel competition state and the base station LAA.
It is generated for this purpose, showing one kind disclosed in another embodiment of the present invention referring to Fig. 3 and exempting from authorization channel contention parameter
The flow diagram of method.
This method comprises:
S31: judge whether the base station LAA currently refers to whether competitive channel and the base station LAA currently need to send discovery
Signal.
S32: when the base station LAA is then based on LAA base no need to send when discovery reference signal currently without in competitive channel
Current business each to be dispatched corresponding contention parameter and each to generate the base station LAA current for the weight of business to be dispatched in standing
Contention parameter.
S33: when the base station LAA is currently without in competitive channel, and L needs to send discovery reference signal, then based on discovery
The corresponding contention parameter of reference signal generates the current contention parameter in the base station LAA.
S34: when the base station LAA is currently in competitive channel, and the base station LAA currently needs to send discovery reference signal, then base
The current competition in the base station LAA is generated in the corresponding contention parameter of discovery reference signal and the contention parameter of the base station LAA last time
Parameter.
Specifically, if the base station LAA illustrates that the base station LAA last time competitive channel fails, if at this time currently in competitive channel
The base station LAA needs to send discovery reference signal, then the base station LAA obtains the contention parameter defer value defer of discovery reference signalDRS
And backoff value TDRSAnd the contention parameter defer value defer of the base station LAA last time competitionoldAnd backoff value Told。
In turn, the deferDRSWith the deferoldAnd the TDRSWith the Told.It will according to comparison result
The deferDRSWith the deferoldIn the smallest defer value defer value current as the base station LAA, by the TDRSAnd institute
State ToldIn the smallest backoff value backoff value current as the base station LAA.
S35: when the base station LAA is currently in competitive channel, and no need to send when discovery reference signal, then it is based on the base station LAA
Last contention parameter generates the current contention parameter in the base station LAA.
It should be noted that generating the mode of contention parameter and the mode for generating contention parameter in the prior art in step 35
It is identical, i.e., new contention parameter is generated in such a way that backoff value successively decreases, when backoff value is kept to 0, channel competition success.
A kind of authorization channel contention parameter generating means exempted from disclosed in another embodiment of the present invention are shown referring to fig. 4
Structural schematic diagram.
As shown in Figure 4, which includes: the first judging unit 41, second judgment unit 42, the first contention parameter generation list
Member 43.
Wherein, whether the first judging unit 41 is for judging the base station LAA currently in competitive channel.
Second judgment unit 42 is for judging whether the base station LAA currently needs to send discovery reference signal.
When the judging result by the first judging unit 41 and second judgment unit 42 determines the base station LAA currently without competing
Channel is striven, and no need to send when discovery reference signal, the first contention parameter generation unit 43 is then based on current every in the base station LAA
The corresponding contention parameter of a business to be dispatched and each weight of business to be dispatched generate the current contention parameter in the base station LAA.
It should be noted that also needing to consider other operating statuses of the base station LAA in practical applications, such as currently without competing
Channel is striven, and needs to send the state of discovery reference signal, currently in competitive channel, and need to send the shape of discovery reference signal
State and currently in competitive channel, no need to send the states of reference signal.
For this purpose, in the present embodiment, the device further include: the second contention parameter generation unit 44, third contention parameter are raw
At unit 45 and the 4th contention parameter generation unit 46.
Wherein, the second contention parameter generation unit, for when the base station LAA is currently without in competitive channel, and the base station LAA is worked as
When preceding needs send discovery reference signal, then current competing in the base station LAA is generated based on the corresponding contention parameter of discovery reference signal
Strive parameter.
Third contention parameter generation unit, for working as the base station LAA currently in competitive channel, and the base station LAA currently needs to send out
When sending discovery reference signal, then based on the corresponding contention parameter of discovery reference signal and the contention parameter of the base station LAA last time
Generate the current contention parameter in the base station LAA；
4th contention parameter generation unit, for working as the base station LAA currently in competitive channel, and the base station LAA does not need currently
When sending discovery reference signal, then the contention parameter based on the base station the LAA last time generates the current contention parameter in the base station LAA.
It should be noted that the Installation practice is corresponding with embodiment of the method, implementation procedure is identical with implementation principle,
Therefore not to repeat here.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. one kind exempts from authorization channel contention parameter generation method characterized by comprising
Judge LAA authorization auxiliary access base station currently whether competitive channel and LAA authorization auxiliary access base station currently whether
Need to send discovery reference signal；
When LAA authorizes auxiliary access base station currently without in competitive channel, and LAA authorization auxiliary access base station does not need currently to send out
When sending discovery reference signal, then the currently corresponding contention parameter of business each to be dispatched is based in LAA authorization auxiliary access base station
And each the weight of business to be dispatched generates the current contention parameter of LAA authorization auxiliary access base station；
It is described to be based in LAA authorization auxiliary access base station the currently corresponding contention parameter of business each to be dispatched and each wait adjust
The weight of degree business generates the contention parameter of LAA authorization auxiliary access base station, comprising:
The weight of the business to be dispatched is configured according to the priority of the business to be dispatched；
The contention parameter of the statistics business to be dispatched, the contention parameter of the business to be dispatched include defer length of delay,
Backoff window size and backoff value；
According to preset formula:
Calculate the current defer length of delay of LAA authorization auxiliary access base station；
Wherein, αiIndicate the weight of i-th of business to be dispatched, deferiIndicate the defer length of delay of i-th of business to be dispatched, N
Indicate the total number of business to be dispatched；
According to preset formula:
ni=log2(CWi+ 1),CW=2U- 1, wherein niIt indicates to move back for i-th
The order of window size corresponding 2 is kept away,Indicate the weighted average of all orders, U expression is not less thanSmallest positive integral；
The current backoff window size of LAA authorization auxiliary access base station is calculated, wherein LAA authorization auxiliary access base station is current keeps out of the way
Window size is [0,2U-1]；
CWiIt is the upper bound of the corresponding backoff window of i-th of business to be dispatched, CW indicates that current LAA authorization auxiliary access base station is corresponding
The upper bound of backoff window, the lower bound of backoff window are always 0；
Generating LAA authorization at random from the backoff window that LAA authorizes auxiliary access base station current assists access base station is current to keep out of the way
Value, or according to preset formulaThe current backoff value of LAA authorization auxiliary access base station is calculated, wherein
TiIndicate the backoff value of i-th of business to be dispatched, αiIndicate the weight of i-th of business to be dispatched.
2. the method according to claim 1, wherein the method also includes:
When LAA authorizes auxiliary access base station currently without in competitive channel, and LAA authorization auxiliary access base station currently needs to send
It was found that when reference signal, then it is current LAA authorization auxiliary access base station to be generated based on the corresponding contention parameter of discovery reference signal
Contention parameter.
3. the method according to claim 1, wherein the method also includes:
Assist access base station currently in competitive channel when LAA is authorized, and LAA authorization auxiliary access base station currently needs to send discovery
When reference signal, then the competing of access base station last time is assisted based on the corresponding contention parameter of discovery reference signal and LAA authorization
It strives parameter and generates the current contention parameter of LAA authorization auxiliary access base station.
4. the method according to claim 1, wherein the method also includes:
Assist access base station currently in competitive channel when LAA is authorized, and currently no need to send hairs for LAA authorization auxiliary access base station
When referring now to signal, then the contention parameter of auxiliary access base station last time is authorized to generate LAA authorization auxiliary access base station based on LAA
Current contention parameter.
5. according to the method described in claim 3, it is characterized in that, it is described based on the corresponding contention parameter of discovery reference signal with
And the contention parameter of LAA authorization auxiliary access base station last time generates the current contention parameter of LAA authorization auxiliary access base station, packet
It includes:
Obtain the contention parameter defer length of delay defer of discovery reference signalDRSAnd backoff value TDRSAnd LAA authorization auxiliary
The contention parameter defer length of delay defer of access base station last time competitionoldAnd backoff value Told；
Compare the deferDRSWith the deferoldAnd the TDRSWith the Told；
By the deferDRSWith the deferoldIn the smallest defer length of delay as LAA authorize auxiliary access base station it is current
Defer length of delay；
By the TDRSWith the ToldIn the smallest backoff value as LAA authorize the current backoff value of auxiliary access base station.
6. the method according to claim 1, wherein the priority of the business to be dispatched according to configures institute
Before the weight for stating business to be dispatched, further includes:
All business in auxiliary access base station are authorized to be ranked up LAA according to priority；
Resource allocation is carried out to all business according to collating sequence, and determines the industry to be dispatched in all business according to allocation result
Business.
7. one kind exempts from authorization channel contention parameter generating means characterized by comprising
First judging unit, for judging LAA authorization auxiliary access base station currently whether in competitive channel；
Second judgment unit, for judging whether LAA authorization auxiliary access base station currently needs to send discovery reference signal；
First contention parameter generation unit, for when LAA authorization auxiliary access base station is currently without in competitive channel, and LAA is awarded
Power auxiliary access base station currently no need to send when discovery reference signal, is then authorized current every in auxiliary access base station based on LAA
It is current that the corresponding contention parameter of a business to be dispatched and each weight of business to be dispatched generate LAA authorization auxiliary access base station
Contention parameter；
It is described to be based in LAA authorization auxiliary access base station the currently corresponding contention parameter of business each to be dispatched and each wait adjust
The weight of degree business generates the contention parameter of LAA authorization auxiliary access base station, comprising:
The weight of the business to be dispatched is configured according to the priority of the business to be dispatched；
The contention parameter of the statistics business to be dispatched, the contention parameter of the business to be dispatched include defer length of delay,
Backoff window size and backoff value；
According to preset formula:
Calculate the current defer length of delay of LAA authorization auxiliary access base station；
Wherein, αiIndicate the weight of i-th of business to be dispatched, deferiIndicate the defer length of delay of i-th of business to be dispatched, N
Indicate the total number of business to be dispatched；
According to preset formula:
ni=log2(CWi+ 1),CW=2U- 1, wherein niIt indicates to move back for i-th
The order of window size corresponding 2 is kept away,Indicate the weighted average of all orders, U expression is not less thanSmallest positive integral；
The current backoff window size of LAA authorization auxiliary access base station is calculated, wherein LAA authorization auxiliary access base station is current keeps out of the way
Window size is [0,2U-1]；
CWiIt is the upper bound of the corresponding backoff window of i-th of business to be dispatched, CW indicates that current LAA authorization auxiliary access base station is corresponding
The upper bound of backoff window, the lower bound of backoff window are always 0；
Generating LAA authorization at random from the backoff window that LAA authorizes auxiliary access base station current assists access base station is current to keep out of the way
Value, or according to preset formulaThe current backoff value of LAA authorization auxiliary access base station is calculated, wherein
TiIndicate the backoff value of i-th of business to be dispatched, αiIndicate the weight of i-th of business to be dispatched.
8. device according to claim 7, which is characterized in that further include:
Second contention parameter generation unit, for when LAA authorization auxiliary access base station is currently without in competitive channel, and LAA is awarded
When power auxiliary access base station currently needs to send discovery reference signal, then generated based on the corresponding contention parameter of discovery reference signal
The current contention parameter of LAA authorization auxiliary access base station.
9. device according to claim 7, which is characterized in that further include:
Third contention parameter generation unit, for assisting access base station currently in competitive channel when LAA authorization, and LAA authorization is auxiliary
When access base station being helped currently to need to send discovery reference signal, then based on the corresponding contention parameter of discovery reference signal and LAA
The contention parameter of authorization auxiliary access base station last time generates the current contention parameter of LAA authorization auxiliary access base station；
4th contention parameter generation unit, for assisting access base station currently in competitive channel when LAA authorization, and LAA authorization is auxiliary
Access base station is helped currently no need to send when discovery reference signal, then to authorize the competition of auxiliary access base station last time based on LAA
Parameter generates the current contention parameter of LAA authorization auxiliary access base station.
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| CN104717687A (en) * | 2015-04-09 | 2015-06-17 | 宇龙计算机通信科技(深圳)有限公司 | Adjustment method and system for channel occupation probability and equipment |
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| CN105392144A (en) * | 2015-12-10 | 2016-03-09 | 北京邮电大学 | Method and apparatus for multiplexing channel of unlicensed frequency band |
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| CN104301273A (en) * | 2014-08-25 | 2015-01-21 | 中兴通讯股份有限公司 | Method and base station for transmitting and receiving signals by using unauthorized carrier waves and user equipment |
| CN104717687A (en) * | 2015-04-09 | 2015-06-17 | 宇龙计算机通信科技(深圳)有限公司 | Adjustment method and system for channel occupation probability and equipment |
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