CN107509250B - The combined distributing method and device of multi-user multiple services authorization and unlicensed spectrum - Google Patents
The combined distributing method and device of multi-user multiple services authorization and unlicensed spectrum Download PDFInfo
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- 238000013468 resource allocation Methods 0.000 claims description 35
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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
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
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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
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation 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
- H04W72/54—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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Abstract
The embodiment of the present invention provides the combined distributing method and device of a kind of multi-user multiple services authorization and unlicensed spectrum, for LTE and WiFi heterogeneous network system, the described method includes: according to the transmission rate requirements difference of different business, the difference in channel quality of different user, and the quality difference of authorization frequency spectrum and unlicensed spectrum itself, using two leg speed rate distribution methods, the distribution of authorization frequency spectrum resource is first carried out to the LTE user that can distribute authorization frequency spectrum, secondly, on the basis of authorizing frequency spectrum distribution, unlicensed spectrum is further distributed to all LTE and WiFi users, it realizes in authorization and the polymerization of unauthorized carrier wave, authorization multiple services to multi-user and unlicensed spectrum reasonably carry out co-allocation, improve the total utility of heterogeneous network system.
Description
Technical field
The present invention relates to the multiple services authorization of wireless communication field more particularly to multi-user and the polymerizations of unlicensed spectrum point
Method of completing the square and device.
Background technique
With the development of wireless communication technique, the heterogeneous network for having merged plurality of communication systems becomes next generation wireless network
The direction of development, heterogeneous network can make to learn from other's strong points to offset one's weaknesses between multisystem by way of merging between system, comprehensive to play respectively
Advantage, wireless resource management is an important subject in heterogeneous network, and target is efficient using limited wireless
The infrastructure of frequency spectrum, transimission power and wireless network.As shown in Figure 1, being coexisted in a LTE cell and a WiFi network
In the heterogeneous network of same unlicensed spectrum, LTE SBS (Long Term Evolution small cell base
Station, the small base station of the long term evolution based on Universal Mobile Communication System standard) it works in authorization frequency spectrum and and WiFi
AP (WiFi Wireless Access Point, WiFi wireless access points) shares unlicensed spectrum, and wherein LTE user has
There is the ability of polymerization authorization and unlicensed spectrum, WiFi user can only use unlicensed spectrum.Therefore, LTE and WiFi heterogeneous network
Wireless resource management in network --- frequency spectrum distribution is a major issue urgently to be resolved.
In LTE and WiFi heterogeneous network frequency spectrum distribution by Core Network (core network) master controller into
Row.In the prior art, current frequency spectrum distributing method has: frequency spectrum of the LTE user in authorization and the polymerization of unauthorized frequency range
Distribution method, LTE user are in the multiple services resource allocation methods of multi-user of authorized spectrum band, WiFi user in unauthorized frequency range
The multiple services frequency spectrum distributing method of multi-user.
The frequency spectrum distributing method of the above-mentioned prior art is not all accounted in authorization and the polymerization of unauthorized carrier wave, existing LTE
User's request has WiFi user's request again in the case that, the co-allocation of frequency spectrum how is carried out.That is, in the prior art,
Not in authorization and the polymerization of unauthorized carrier wave, the combined distributing method of frequency spectrum under multi-user's multi-service circumstances.
Summary of the invention
The joint point for being designed to provide a kind of multi-user multiple services authorization and unlicensed spectrum of the embodiment of the present invention
Method of completing the square and device are used for LTE and WiFi heterogeneous network system, to realize in authorization and the polymerization of unauthorized carrier wave, multi-user
The co-allocation of frequency spectrum under multi-service circumstances.Specific technical solution is as follows:
In a first aspect, the embodiment of the invention provides a kind of joints point of multi-user multiple services authorization and unlicensed spectrum
Method of completing the square, comprising:
The multiple LTE users and multiple WiFi users of request access system are obtained, wherein LTE user includes that LTE QoS is used
Family and LTE BE user；
Obtain the present channel quality of each LTE QoS user；
According to the current transmission rate of assignable authorized channels and the present channel matter of each LTE QoS user
Amount, selection meets all first LTE QoS users of minimum transmission rate demand from each LTE QoS user；It is described
First LTE QoS user is the LTE QoS user that can distribute authorization frequency spectrum resource；
It is described each using the authorization frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
First LTE QoS user and each LTE BE user distribute authorization frequency spectrum resource；
It is described each using the unlicensed spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
A LTE user and each WiFi user distribute unlicensed spectrum resource.
Optionally, the step of present channel quality for obtaining each LTE QoS user, comprising: obtain each
The present channel quality factor of LTE QoS user；
The current present channel of the transmission rate of assignable authorized channels and each LTE QoS user of the basis
Quality, selection meets the step of all first LTE QoS users of minimum transmission rate demand from each LTE QoS user
Suddenly, comprising:
Each LTE QoS user is pressed into channel quality factor sort descending；
Since the maximum LTE QoS user of channel quality factor, following steps are executed:
JudgementIt is whether true,
WhereinFor the transmission rate of the current assignable authorized channels, initial valueIt is current
The maximum data transfer rate R of assignable authorization frequency spectrumL,
For the present channel quality factor of each LTE QoS user, initial valueIt is maximum for channel quality factor
The present channel quality factor of LTE QoS user,
r0For the minimum data transmission rate of QoS user demand,
The queue of the LTE QoS user is
If set up, will with it is describedCorresponding LTE QoS user deposit is for saving the first LTE QoS user's
QueueIn, with seasonReturn to the judgement
Whether it is true the step of, until be unsatisfactory for the Rule of judgment.
Optionally, described distributed using the authorization frequency spectrum resource determined previously according to maximization user's total utility principle is calculated
Method is that each first LTE QoS user and each LTE BE user distribute the step of authorizing frequency spectrum resource, comprising:
It is that each first LTE QoS user and each LTE BE user distribute authorization frequency spectrum money using the first formula
Source；
First formula are as follows:
Wherein, the first Lagrange multiplier λ need to meet condition:
For the optimal authorization spectrum transmissions rate of each LTE user, includingEach first LTE indicated
The optimal authorization spectrum transmissions rate of QoS user,Indicate except the open air the first LTE QoS remaining LTE QoS use
The optimal authorization spectrum transmissions rate at family,The optimal authorization spectrum transmissions rate of each LTE BE user indicated, LTE
The queue of user isThe queue of LTE BE user is
It is optionally, described that previously according to maximizing, user's total utility principle is determining to authorize frequency spectrum resource allocation algorithm, comprising:
Authorization frequency spectrum resource distribution model is determined according to maximum user's total utility；
According to authorization frequency spectrum resource distribution model, QoS user utility function, BE user utility function, the first glug is constructed
Bright day function；
Wherein, the authorization frequency spectrum resource distribution model are as follows:
The QoS user utility function is,C is user to r0Demand
Degree,For the authorization spectrum transmissions rate of each LTE QoS user；
The BE user utility function is,K is need of the user to transmission rate
Ask degree, rmaxIndicate the peak transfer rate of BE user demand,For the authorization spectrum transmissions of each LTE BE user
Rate；
First Lagrangian of construction are as follows:
According to the KKT condition for seeking optimal solution, the partial derivative of first Lagrangian should meet condition:
According to the equation that the partial derivative of first Lagrangian should meet, first formula is obtained.
Optionally, described to utilize the first formula, it is that each first LTE QoS user and each LTE BE user distribute
The step of authorizing frequency spectrum resource, comprising:
According to the channel quality factor of each first LTE QoS user and first formula, obtain described each
The optimal authorization spectrum transmissions rate of first LTE QoS user, by authorization frequency spectrum resource and each first LTE QoS user
Optimal authorization spectrum transmissions rate correspond, be individually assigned to each first LTE QoS user；
According to the channel quality factor of each LTE BE user and first formula, each LTE BE is obtained
The optimal authorization spectrum transmissions rate of user, by the optimal authorization of remaining authorization frequency spectrum resource and each LTE BE user
Spectrum transmissions rate corresponds, and is individually assigned to each LTE BE user.
Optionally, described to be calculated using the unlicensed spectrum resource allocation determined previously according to maximization user's total utility principle
The step of method is each LTE user and each WiFi user distribution unlicensed spectrum resource, comprising:
It is that each LTE user and each WiFi user distribute unlicensed spectrum resource using the second formula:
Second formula includes:
Wherein, β is the second Lagrange multiplier, need to meet condition:
For the optimal unlicensed spectrum transmission rate of each LTE user, includingThe LTE QoS of expression
The optimal unlicensed spectrum transmission rate of user,The optimal unlicensed spectrum of each LTE BE user indicated transmits speed
Rate,
rW,jFor the optimal unlicensed spectrum transmission rate of each WiFi user, includingThe WiFi QoS of expression
The optimal unlicensed spectrum transmission rate of user,The optimal unlicensed spectrum of each WiFi BE user indicated transmits speed
Rate,
The queue of WiFi user isThe queue of WiFi QoS user is
The queue of WiFi BE user isRUAnd RWLTE SBS and WiFi AP are respectively indicated non-
Authorize the instantaneous transmission speed on frequency spectrum.
Optionally, described to determine unlicensed spectrum resource allocation algorithm previously according to maximization user's total utility principle, it wraps
It includes:
Unlicensed spectrum resource allocator model is determined according to user's total utility is maximized, and constructs the second Lagrangian；
Wherein, unlicensed spectrum resource allocator model are as follows:
WithRespectively indicate the time factor of each LTE and each WiFi user occupancy unlicensed spectrum, tsIndicate non-
Authorize frequency spectrum can the occupied total time factor；
Second Lagrangian of construction are as follows:
According to the KKT condition for seeking optimal solution, the table of the time factor of LTE and WiFi user occupancy unlicensed spectrum is obtained
Up to formula:
According to the expression formula of the time factor of the LTE and WiFi user occupancy unlicensed spectrum and LTE SBS and
Instantaneous transmission speed R of the WiFi AP in unlicensed spectrumUAnd RW, obtain second formula.
Optionally, described to utilize the second formula, it is that each LTE user and the non-distribution of each WiFi user authorize frequency spectrum
The step of resource, comprising:
According to the channel quality factor and second formula of each LTE user and WiFi user, obtain described each
The optimal unlicensed spectrum transmission rate of a LTE user and each WiFi user, by unlicensed spectrum resource and each LTE
The optimal unlicensed spectrum transmission rate of user and each WiFi user correspond, and are individually assigned to each LTE user and each
A WiFi user.
Second aspect, the embodiment of the invention provides a kind of joints point of multi-user multiple services authorization and unlicensed spectrum
With device, comprising:
User's acquiring unit, for the multiple LTE users and multiple WiFi users of acquisition request access system, wherein LTE
User includes LTE QoS user and LTE BE user；
Channel quality acquiring unit, for obtaining the present channel quality of each LTE QoS user；
First LTE QoS user's determination unit, for according to the transmission rate of current assignable authorized channels and described
The present channel quality of each LTE QoS user, selection meets minimum transmission rate demand from each LTE QoS user
All first LTE QoS users；The first LTE QoS user is the LTE QoS user that can distribute authorization frequency spectrum resource；
Frequency spectrum resource allocation unit is authorized, for utilizing the authorization frequency determined previously according to maximization user's total utility principle
Spectrum resource allocation algorithm is that each first LTEQoS user and each LTE BE user distribute authorization frequency spectrum resource；
Unlicensed spectrum resource allocation unit, for utilization previously according to non-the awarding for maximizing the determination of user's total utility principle
Frequency spectrum resource allocation algorithm is weighed, is that each LTE user and each WiFi user distribute unlicensed spectrum resource.
The third aspect, the embodiment of the invention provides a kind of electronic equipment, comprising: processor, communication interface, memory and
Communication bus, wherein processor, communication interface, memory complete mutual communication by communication bus；
The memory, for storing computer program；
The processor when for executing the computer program stored on the memory, realizes the embodiment of the present invention
Any one method and step of first aspect.
The combined distributing method of a kind of multiple services authorization of multi-user provided in an embodiment of the present invention and unlicensed spectrum and
Device, compared with prior art, according to the transmission rate requirements difference of different business, the difference in channel quality of different user, with
And the quality difference of authorization frequency spectrum and unlicensed spectrum itself, using two leg speed rate distribution methods, first to authorization frequency spectrum can be distributed
LTE user carries out the distribution of authorization frequency spectrum resource, secondly, on the basis of authorizing frequency spectrum distribution, further by unlicensed spectrum
All LTE and WiFi users are distributed to, are realized in authorization and the polymerization of unauthorized carrier wave, to the multiple services authorization of multi-user
Co-allocation is reasonably carried out with unlicensed spectrum, improves the total utility of heterogeneous network system.Certainly, implement of the invention appoint
One product or method do not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
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 should be apparent that, drawings in the following description are only some embodiments of the invention, based on the reality in the present invention
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the scope of protection of the invention.
Fig. 1 is the delivery of user traffic scene figure in LTE and WiFi heterogeneous network；
Fig. 2 is one kind of the combined distributing method of the multiple services authorization of the multi-user of the embodiment of the present invention and unlicensed spectrum
Flow diagram；
Fig. 3 is a kind of idiographic flow schematic diagram of step S203 in embodiment illustrated in fig. 2；
Fig. 4 is the structure of the co-allocation device of the multiple services authorization of the multi-user of the embodiment of the present invention and unlicensed spectrum
Schematic diagram；
Fig. 5 is the schematic diagram of the electronic equipment of the embodiment of the present invention.
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.
It should be noted that the connection of a kind of multi-user multiple services authorization and unlicensed spectrum provided in an embodiment of the present invention
Distribution method is closed, can be applied to the controller of the central site network of LTE and WiFi heterogeneous network system, which includes desk-top
Computer, portable computer, server etc., are not limited thereto, any electronic equipment that the embodiment of the present invention may be implemented,
Belong to the protection scope of the embodiment of the present invention.
Referring to fig. 2, Fig. 2 is that a kind of process of the combined distributing method of the multiple services authorization of multi-user and unlicensed spectrum is shown
It is intended to, includes the following steps:
S201 obtains the multiple LTE users and multiple WiFi users of request access system, and wherein LTE user includes LTE
QoS user and LTE BE user；
In LTE and WiFi heterogeneous network system, the controller of central site network receives multiple LTE users and multiple WiFi are used
The service access at family is requested and is accessed, and is distinguished the user according to the type of service of user, including LTE QoS user,
LTE BE user and WiFi QoS user, WiFi BE user, wherein the type of service includes that minimum transmission rate needs
QoS (Quality of Service, the service quality) business asked, and the BE (Best- without specific transmission rate requirement
Effort does one's best) business, for the BE business of no specific transmission rate requirement, transmission rate is the bigger the better.
The type of service according to user distinguishes the user, can be and is carried out according to specific business tine
It distinguishes, such as QoS user can be identified as service-users such as audio, video and key tasks, for no specific time demand
The service-users such as web page browsing, mail transmission/reception can be identified as BE user；It can also be according to carrying in the service request
Customer service type label is directly distinguished；It can also be according to other any business that can characterize to the information of transmission rate requirements
It distinguishes, such as user corresponding with service request is the ViP user of operator, there is specified minimum to need transmission rate
It asks, then can determine it as QoS user, non-ViP user is determined as BE user.For user specific differentiating method herein not
It is restricted.
S202 obtains the present channel quality of each LTE QoS user；
Since the respective channel of different user has different channel qualities, the channel quality will cause spectrum transmissions speed
The loss of rate, such as when bad channel quality, spectrum transmissions rate loss is excessive, it is more likely that it is unable to satisfy the demand of user,
Therefore before distributing frequency spectrum resource to each user of access service request, need to obtain working as each LTE QoS user
Preceding channel quality, the distribution to guarantee frequency spectrum resource can satisfy user demand after considering the influence of channel quality.
The acquisition of channel quality can be the quality that pre-stored each channel is extracted from the central network controller
Information is also possible to obtain current channel condition parameter such as time delay, signal-to-noise ratio etc. in real time, calculates further according to the state parameter
Channel quality information out.Any mode for obtaining present channel quality is used equally for this step, and this is not restricted.
S203, according to the current transmission rate of assignable authorized channels and the current letter of each LTE QoS user
Road quality, selection meets all first LTE QoS users of minimum transmission rate demand from each LTE QoS user；
The first LTE QoS user is the LTE QoS user that can distribute authorization frequency spectrum resource；
Since unlicensed spectrum uses the channel access technology of LBT (Listen Before Traffic, listem-before-talk),
Have the characteristics that quality non-stationary, in contrast authorizes the quality of frequency spectrum itself to be better than the unlicensed spectrum, therefore will authorization
Spectral priority distributes to the LTE QoS user of minimum-rate demand, preferably to meet rate requirement, realizes the reasonable of frequency spectrum
It utilizes.
Consider influence of the user channel quality to transmission rate simultaneously, chooses all first from all LTE QoS users
LTE QoS user, as the LTE QoS user that can distribute authorization frequency spectrum resource.The first LTE QoS user is channel quality
It can satisfy the LTE QoS user of minimum transmission rate demand, i.e., by the selection to the first LTE QoS user, into one
Step improves the reasonability of frequency spectrum distribution.
Selection for the first LTE QoS user can be more by carrying out in advance to the heterogeneous network channel
Secondary test verifying, obtains a channel quality thresholds, chooses channel quality and is greater than the user of the channel quality thresholds as institute
State the first LTE QoS user；It can also be according to the historical information for accessing LTE QoS user in the heterogeneous network, determine
The LTE QoS user is pressed channel quality descending sort by the maximum LTE QoS number of users that authorization frequency spectrum can be supported, from
The user that channel quality ranks the first starts, and successively chooses user corresponding with the channel quality, reaches until choosing quantity
The maximum LTE QoS number of users that the authorization frequency spectrum can be supported, as the first LTE QoS user.It is all to select
The method for taking out the first LTE QoS user is used equally for this step.
S204, using the authorization frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle, for institute
It states each first LTE QoS user and each LTE BE user distributes authorization frequency spectrum resource；
S205, using previously according to maximize user's total utility principle determine unlicensed spectrum resource allocation algorithm, be
Each LTE user and each WiFi user distribute unlicensed spectrum resource；
When the master controller of the heterogeneous network is using predetermined frequency spectrum resource allocation algorithm distribution frequency spectrum resource,
It needs the satisfaction for making each user to reach most preferably, that is, to maximize user's total utility as principle to realize.
Therefore, it when determining the frequency spectrum resource allocation algorithm, can be using the demand of each user as constraint condition,
By the limited frequency spectrum resource of total amount, is divided premised on the constraint condition, be individually assigned to after division each by can satisfy
A user, it is to be appreciated that the division be it is not unique so that user utility be also it is not unique, from there through each
The total utility for all users that the user utility of a user obtains be also it is not unique, to maximize user's total utility as principle,
Choosing corresponding splitting scheme when user's total utility maximum is that each user distributes frequency spectrum resource, that is, may make point of frequency spectrum resource
User's total utility is maximized with realizing, is that the satisfaction of each user can be made to reach in all possible allocation plan
Optimal scheme.The frequency spectrum resource of division is individually assigned to each user by the preferred plan.
When determining the frequency spectrum resource allocation algorithm, for the step S204, can be each first LTE
The demand of QoS user as constraint condition, the partition process preferentially to and each first LTE QoS user distribute authorization
Remaining resource is allocated to by frequency spectrum resource when remaining authorization frequency spectrum resource is not enough to support next LTE QoS user
Each LTE BE user.
It is to each LTE user and each for the step S205 when determining the frequency spectrum resource allocation algorithm
WiFi user distributes unlicensed spectrum resource, that is to say, that for having been allocated for each first LTE of authorization frequency spectrum
QoS user and each LTE BE user, are still assigned unlicensed spectrum, according to the selection of the first LTE QoS user,
It can be understood that thereby reducing frequency spectrum resource by the imperfect channel loss of quality, the conjunction of frequency spectrum resource is further improved
Reason utilizes, and improves user satisfaction.
The step S202 of the present channel quality for obtaining each LTE QoS user optionally includes: to obtain respectively
The present channel quality factor of a LTE QoS user, the channel quality factor are the channel qualities indicated by specific value
The parameter of quality.
Referring to Fig. 3, Fig. 3 is a kind of idiographic flow schematic diagram of step S203 in embodiment illustrated in fig. 2, the step
S203, it is optional the following steps are included:
Each LTE QoS user is pressed channel quality factor sort descending by S301, maximum from channel quality factor
LTE QoS user starts, and executes following steps:
S302, judgementIt is whether true, whereinFor the current assignable authorized channels
Transmission rate, initial valueFor the maximum data transfer rate R of current assignable authorization frequency spectrumL,It is each
The present channel quality factor of LTE QoS user, initial valueFor working as the maximum LTE QoS user of channel quality factor
Preceding channel quality factor, r0Queue for the minimum data transmission rate of QoS user demand, the LTE QoS user is
S303, if set up, will with it is describedCorresponding LTE QoS user deposit is used for saving the first LTE QoS
The queue at familyIn；
S304 is enabledReturn to the judgementWhether it is true the step of
S302；
S305, when being unsatisfactory for the Rule of judgment of step S302, the first LTE QoS user, which chooses, to be completed, knot
Beam is chosen.
In order to facilitate detailed process shown in Fig. 3 is understood, it is illustrated below by a specific example.
Each LTE QoS user is pressed into channel quality factor sort descending, obtains queueJudgment step is executed since the user 1 for coming the queue first place, by user's 1
Channel quality factorWith the maximum data transfer rate R of current assignable authorization frequency spectrumLSubstitute into step S302, judgementIt is whether true, it should be appreciated that the channel quality for coming the user 1 of the queue first place is all LTE
It is best in QoS user, therefore for first user, condition is to set up under normal circumstances, and user 1 is put into described first
LTE QoS Subscriber QueueIn；It enablesJudgementIt is whether true, if so,
User 2 is put into the first LTE QoS Subscriber QueueIn；It enablesJudgementIt is whether true, if so, user 3 is put into the first LTE QoS user team
ColumnIn；It circuits sequentially, until the Rule of judgment is invalid, obtains the first LTE QoS Subscriber QueueAnd terminate the selection.
Optionally, described to divide for each first LTE QoS user and each LTE BE user in the step S204
It may include step S2040 (not marking in flow charts) with authorization frequency spectrum resource: utilizing the first formula, be described each the
One LTE QoS user and each LTE BE user distribute authorization frequency spectrum resource；
First formula are as follows:
Wherein, the first Lagrange multiplier λ need to meet condition:
For the optimal authorization spectrum transmissions rate of each LTE user, includingEach first LTE indicated
The optimal authorization spectrum transmissions rate of QoS user,Indicate except the open air the first LTE QoS remaining LTE QoS
The optimal authorization spectrum transmissions rate of user,The optimal authorization spectrum transmissions speed of each LTE BE user indicated
The queue of rate, LTE user isThe queue of LTE BE user is
It can be seen that for different user, first formula has comprehensively considered different service types, different channels quality to awarding
The influence of spectrum transmissions rate is weighed, correspondingly, the optimal authorization frequency of each LTE user obtained according to first formula
Transmission rate is composed, even if being the most suitable authorization spectrum transmissions that still can satisfy different user demands under the influence of described
Rate will authorize frequency spectrum resource to be allocated, can guarantee to user service according to the optimal authorization spectrum transmissions rate
Quality.
Optionally, in the step S204, the authorization frequency determined previously according to maximization user's total utility principle
Spectrum resource allocation algorithm may include step S2041 (not marking in flow charts): being determined and is authorized according to maximum user's total utility
Frequency spectrum resource distribution model；According to authorization frequency spectrum resource distribution model, QoS user utility function, BE user utility function, construction
First Lagrangian；
Wherein, the authorization frequency spectrum resource distribution model are as follows:
The QoS user utility function is,C is user to r0Demand
Degree can be arranged according to historical experience,For the authorization spectrum transmissions rate of each LTE QoS user；
The BE user utility function is,K is need of the user to transmission rate
Degree is sought, can be arranged according to historical experience, rmaxIt indicates the peak transfer rate of BE user demand, can be used by analysis BE
The setting of the historical information in the heterogeneous network is accessed at family,For the authorization spectrum transmissions speed of each LTE BE user
Rate；
First Lagrangian of construction are as follows:
According to the KKT condition for seeking optimal solution, the partial derivative of first Lagrangian should meet condition:
According to the equation that the partial derivative of first Lagrangian should meet, first formula is obtained.Simultaneously
As can be seen that each edge utility function value by service user is equal from the equation, it is equal to Lagrange multiplier λ,
I.e. optimal solution can guarantee that each LTE user is equal to the desirability of authorized spectrum band rate, that is, make expiring for each user
Meaning degree meets its demand, has reached the optimal effect of satisfaction, therefore obtained first formula namely meets institute
State maximum user's total utility.It should be understood that the KKT condition refer to nonlinear programming problem have optimize solution must
It wants and adequate condition, is the achievement of generalization Lagrangian.
Optionally, the step S2040, comprising:
According to the channel quality factor of each first LTE QoS user and first formula, obtain described each
The optimal authorization spectrum transmissions rate of first LTE QoS user, by authorization frequency spectrum resource and each first LTE QoS user
Optimal authorization spectrum transmissions rate correspond, be individually assigned to each first LTE QoS user；
According to the channel quality factor of each LTE BE user and first formula, each LTE BE is obtained
The optimal authorization spectrum transmissions rate of user, by the optimal authorization of remaining authorization frequency spectrum resource and each LTE BE user
Spectrum transmissions rate corresponds, and is individually assigned to each LTE BE user.
Optionally, described non-using being determined previously according to maximization user's total utility principle in the step S205
Frequency spectrum resource allocation algorithm is authorized, is that each LTE user and each WiFi user distribute unlicensed spectrum resource, can wrap
Include step S2050:
It is that each LTE user and each WiFi user distribute unlicensed spectrum resource using the second formula:
Second formula includes:
Wherein, β is the second Lagrange multiplier, need to meet condition:
For the optimal unlicensed spectrum transmission rate of each LTE user, includingThe LTE QoS of expression
The optimal unlicensed spectrum transmission rate of user,The optimal unlicensed spectrum of each LTE BE user indicated transmits speed
Rate,
rW, jFor the optimal unlicensed spectrum transmission rate of each WiFi user, includingThe WiFi QoS of expression
The optimal unlicensed spectrum transmission rate of user,The optimal unlicensed spectrum of each WiFi BE user indicated transmits speed
Rate,
The queue of WiFi user isThe queue of WiFi QoS user is
The queue of WiFi BE user isRUAnd RWLTE SBS and WiFi AP are respectively indicated non-
Authorize the instantaneous transmission speed on frequency spectrum.
It can be seen that second formula, has comprehensively considered different service types, user channel quality transmits unlicensed spectrum
The influence of rate, correspondingly, the optimal unlicensed spectrum of each LTE user obtained by second formula transmits speed
Rate and the optimal unlicensed spectrum transmission rate of each WiFi user, even if being that can still expire under the influence of described
The most suitable unlicensed spectrum transmission rate of sufficient user demand, can guarantee the quality to user service.
Optionally, described to determine unauthorized frequency previously according to maximization user's total utility principle in the step S205
Spectrum resource allocation algorithm may include step S2051: determine unlicensed spectrum resource allocation mould according to user's total utility is maximized
Type constructs the second Lagrangian；
Wherein, unlicensed spectrum resource allocator model are as follows:
WithRespectively indicate the time factor of each LTE and each WiFi user occupancy unlicensed spectrum, tsIndicate non-
Authorize frequency spectrum can the occupied total time factor；
Second Lagrangian of construction are as follows:
According to the KKT condition for seeking optimal solution, the table of the time factor of LTE and WiFi user occupancy unlicensed spectrum is obtained
Up to formula:
Since unlicensed spectrum uses the channel access technology of LBT, the transmission rate of unlicensed spectrum passes through its instantaneous biography
Defeated rate is multiplied acquisition with the time factor of user occupancy unlicensed spectrum, therefore non-according to LTE the and WiFi user occupancy
Authorize the instantaneous transmission speed R of the expression formula and LTE SBS and WiFi AP of the time factor of frequency spectrum in unlicensed spectrumU
And RWObtain second formula.
It is similar with the principle that first formula meets maximum user's total utility, since second formula is by meeting
The expression formula for stating the time factor of KKT condition obtains, therefore when utilization second formula distribution unlicensed spectrum resource, also protects
Demonstrate,proved each user satisfaction be it is identical, obtained allocation plan meets maximum user's total utility.
Optionally, the step S2050, comprising:
According to the channel quality factor and second formula of each LTE user and WiFi user, obtain described each
The optimal unlicensed spectrum transmission rate of a LTE user and each WiFi user, by unlicensed spectrum resource and each LTE
The optimal unlicensed spectrum transmission rate of user and each WiFi user correspond, and are individually assigned to each LTE user and each
A WiFi user.
In the specific implementation process, each embodiment of the invention can individually be implemented, and can also combine implementation；This field
Technical staff can be not construed as limiting herein determines according to actual conditions.
Corresponding to above-mentioned embodiment of the method, the embodiment of the invention also provides the multiple services authorizations of a kind of multi-user and non-
Authorize frequency spectrum co-allocation device, referring to fig. 4, Fig. 4 be the embodiment of the present invention multi-user it is multiple services authorization and it is unauthorized
The structural schematic diagram of the co-allocation device of frequency spectrum, the apparatus may include:
User's acquiring unit 401, for the multiple LTE users and multiple WiFi users of acquisition request access system, wherein
LTE user includes LTE QoS user and LTE BE user；
Channel quality acquiring unit 402, for obtaining the present channel quality of each LTE QoS user；
First LTE QoS user determination unit 403, for according to the currently transmission rate of assignable authorized channels and institute
The present channel quality for stating each LTE QoS user, selection meets minimum transmission rate need from each LTE QoS user
All first LTE QoS users asked；The first LTE QoS user is the LTE QoS user that can distribute authorization frequency spectrum resource；
Frequency spectrum resource allocation unit 404 is authorized, for using user's total utility principle is determining to award previously according to maximizing
Frequency spectrum resource allocation algorithm is weighed, is that each first LTEQoS user and each LTE BE user distribute authorization frequency spectrum resource；
Unlicensed spectrum resource allocation unit 405 is determined for utilization previously according to maximization user's total utility principle
Unlicensed spectrum resource allocation algorithm is that each LTE user and each WiFi user distribute unlicensed spectrum resource.
For device embodiment, since it is substantially similar to the method embodiment, related so describing fairly simple
Place illustrates referring to the part of embodiment of the method.Various embodiments of the present invention can select therein according to the actual needs
Some or all of the modules achieves the purpose of the solution of this embodiment.Those skilled in the art are in the feelings not made the creative labor
Under condition, it can understand and implement.
The embodiment of the invention also provides a kind of electronic equipment, as shown in figure 5, include processor 501, communication interface 502,
Memory 503 and communication bus 504, wherein processor 501, communication interface 502, it is complete that memory logical 503 crosses communication bus 504
At mutual communication；
The memory 503, for storing computer program；
The processor 501 when for executing the computer program stored on the memory 503, realizes following step
It is rapid:
The multiple LTE users and multiple WiFi users of request access system are obtained, wherein LTE user includes that LTE QoS is used
Family and LTE BE user；
Obtain the present channel quality of each LTE QoS user；
According to the current transmission rate of assignable authorized channels and the present channel matter of each LTE QoS user
Amount, selection meets all first LTE QoS users of minimum transmission rate demand from each LTE QoS user；It is described
First LTE QoS user is the LTE QoS user that can distribute authorization frequency spectrum resource；
It is described each using the authorization frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
First LTE QoS user and each LTE BE user distribute authorization frequency spectrum resource；
It is described each using the unlicensed spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
A LTE user and each WiFi user distribute unlicensed spectrum resource.
Certain processor 501 can also execute above-mentioned any one in the program stored on running the memory 503
The method of the co-allocation of the multiple services authorization of kind multi-user and unlicensed spectrum.
The communication bus that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, control bus etc..For just
It is only indicated with a thick line in expression, figure, it is not intended that an only bus or a type of bus.
Communication interface is for the communication between above-mentioned electronic equipment and other equipment.
Memory may include random access memory (Random Access Memory, RAM), also may include non-easy
The property lost memory (Non-Volatile Memory, NVM), for example, at least a magnetic disk storage.Optionally, memory may be used also
To be storage device that at least one is located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal
Processing, DSP), it is specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete
Door or transistor logic, discrete hardware components.
In the present embodiment, according to the transmission rate requirements difference of different business, the difference in channel quality of different user, with
And the quality difference of authorization frequency spectrum and unlicensed spectrum itself, using two leg speed rate distribution methods, first to authorization frequency spectrum can be distributed
LTE user carries out the distribution of authorization frequency spectrum resource, secondly, on the basis of authorizing frequency spectrum distribution, further by unlicensed spectrum
All LTE and WiFi users are distributed to, are realized in authorization and the polymerization of unauthorized carrier wave, to the multiple services authorization of multi-user
Co-allocation is reasonably carried out with unlicensed spectrum, improves the total utility of heterogeneous network system.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of combined distributing method of multi-user multiple services authorization and unlicensed spectrum, is used for LTE and WiFi heterogeneous network
System, which is characterized in that the described method includes:
Obtain request access system multiple LTE users and multiple WiFi users, wherein LTE user include LTE QoS user and
LTE BE user；
Obtain the present channel quality of each LTE QoS user；
According to the current transmission rate of assignable authorized channels and the present channel quality of each LTE QoS user, from
Selection meets all first LTE QoS users of minimum transmission rate demand in each LTE QoS user；Described first
LTE QoS user is the LTE QoS user that can distribute authorization frequency spectrum resource；
It is described each first using the authorization frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
LTE QoS user and each LTE BE user distribute authorization frequency spectrum resource；
It is described each using the unlicensed spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
LTE user and each WiFi user distribute unlicensed spectrum resource.
2. the method according to claim 1, wherein
The step of present channel quality for obtaining each LTE QoS user, comprising: obtain each LTE QoS user
The present channel quality factor；
The basis currently transmission rate of assignable authorized channels and the present channel matter of each LTE QoS user
Amount, selection meets the step of all first LTE QoS users of minimum transmission rate demand from each LTE QoS user
Suddenly, comprising:
Each LTE QoS user is pressed into channel quality factor sort descending；
Since the maximum LTE QoS user of channel quality factor, following steps are executed:
JudgementIt is whether true,
WhereinFor the transmission rate of the current assignable authorized channels, initial valueCan currently to distribute
Authorization frequency spectrum maximum data transfer rate RL,
For the present channel quality factor of each LTE QoS user, initial valueFor the maximum LTE of channel quality factor
The present channel quality factor of QoS user,
r0For the minimum data transmission rate of QoS user demand,
The queue of the LTE QoS user is
If set up, will with it is describedCorresponding LTE QoS user deposit is for saving the queue of the first LTE QoS userIn, with seasonReturn to the judgementWhether
The step of establishment, until being unsatisfactory for the Rule of judgment.
3. according to the method described in claim 2, it is characterized in that, described using previously according to maximization user's total utility principle
Determining authorization frequency spectrum resource allocation algorithm is that each first LTE QoS user and each LTE BE user distribute authorization
The step of frequency spectrum resource, comprising:
It is that each first LTE QoS user and each LTE BE user distribute authorization frequency spectrum resource using the first formula；
First formula are as follows:
Wherein, the first Lagrange multiplier λ need to meet condition:
For the optimal authorization spectrum transmissions rate of each LTE user, includingThe each first LTE QoS indicated
The optimal authorization spectrum transmissions rate of user,Indicate except the open air the first LTE QoS remaining LTE QoS user
Optimal authorization spectrum transmissions rate,The optimal authorization spectrum transmissions rate of each LTE BE user indicated, LTE
The queue of user isThe queue of LTE BE user is It is LTE BE user to the desirability of transmission rate, rmaxIndicate that the peak transfer rate of BE user demand, C are user couple
r0Desirability,For the present channel quality factor of the first LTE QoS user,For the present channel matter of LTE BE user
Measure the factor.
4. according to the method described in claim 3, it is characterized in that, described determining previously according to user's total utility principle is maximized
Authorize frequency spectrum resource allocation algorithm, comprising:
Authorization frequency spectrum resource distribution model is determined according to maximum user's total utility；
According to authorization frequency spectrum resource distribution model, QoS user utility function, BE user utility function, the first Lagrange of construction
Function；
Wherein, the authorization frequency spectrum resource distribution model are as follows:
The QoS user utility function is,C is user to r0Desirability,For the authorization spectrum transmissions rate of each LTE QoS user；
The BE user utility function is,K is demand journey of the user to transmission rate
Degree, rmaxIndicate the peak transfer rate of BE user demand,For the authorization spectrum transmissions speed of each LTE BE user
Rate,It is BE user to the desirability of transmission rate；
First Lagrangian of construction are as follows:
RLFor the maximum data transfer rate of current assignable authorization frequency spectrum；
According to the KKT condition for seeking optimal solution, the partial derivative of first Lagrangian should meet condition:
According to the equation that the partial derivative of first Lagrangian should meet, first formula is obtained.
5. according to the method described in claim 3, it is characterized in that, described utilize the first formula, for each first LTE
QoS user and each LTE BE user distribute the step of authorization frequency spectrum resource, comprising:
According to the channel quality factor of each first LTE QoS user and first formula, described each first is obtained
The optimal authorization spectrum transmissions rate of LTE QoS user, most with each first LTE QoS user by authorization frequency spectrum resource
Excellent authorization spectrum transmissions rate corresponds, and is individually assigned to each first LTE QoS user；
According to the channel quality factor of each LTE BE user and first formula, each LTE BE user is obtained
Optimal authorization spectrum transmissions rate, by it is remaining authorization frequency spectrum resource and each LTE BE user optimal authorization frequency spectrum
Transmission rate corresponds, and is individually assigned to each LTE BE user.
6. according to the method described in claim 2, it is characterized in that, described using previously according to maximization user's total utility principle
Determining unlicensed spectrum resource allocation algorithm is that each LTE user and each WiFi user distribute unlicensed spectrum money
The step of source, comprising:
It is that each LTE user and each WiFi user distribute unlicensed spectrum resource using the second formula:
Second formula includes:
Wherein, β is the second Lagrange multiplier, need to meet condition:
For the optimal unlicensed spectrum transmission rate of each LTE user, includingThe LTE QoS user of expression
Optimal unlicensed spectrum transmission rate,The optimal unlicensed spectrum transmission rate of each LTE BE user indicated,Indicate the optimal authorization spectrum transmissions rate of each LTE BE user,For the queue of LTE user, C is user couple
r0Desirability,
rW,jFor the optimal unlicensed spectrum transmission rate of each WiFi user, includingThe WiFi QoS user of expression
Optimal unlicensed spectrum transmission rate,The optimal unlicensed spectrum transmission rate of each WiFi BE user indicated,It is LTE BE user to the desirability of transmission rate,It is WiFiBE user to the desirability of transmission rate, rmaxTable
Show the peak transfer rate of BE user demand,For the present channel quality factor of WiFi QoS user,For LTE BE user
The present channel quality factor,For the present channel quality factor of WiFiBE user,
The queue of WiFi user isThe queue of WiFi QoS user isWiFi
The queue of BE user isRUAnd RWLTE SBS and WiFi AP are respectively indicated in unauthorized frequency
Instantaneous transmission speed in spectrum.
7. according to the method described in claim 6, it is characterized in that, described determining previously according to user's total utility principle is maximized
Unlicensed spectrum resource allocation algorithm, comprising:
Unlicensed spectrum resource allocator model is determined according to user's total utility is maximized, and constructs the second Lagrangian；
Wherein, unlicensed spectrum resource allocator model are as follows:
WithRespectively indicate the time factor of each LTE and each WiFi user occupancy unlicensed spectrum, tsIndicate unauthorized
Frequency spectrum can the occupied total time factor；For the optimal authorization spectrum transmissions rate of each LTE user,For each LTE
The optimal authorization spectrum transmissions rate of QoS user,For the time factor of WiFi QoS user occupancy unlicensed spectrum；
Second Lagrangian of construction are as follows:
Wherein, tl,iFor the time factor of LTE user occupancy unlicensed spectrum, tw,jFor WiFi user occupancy unlicensed spectrum when
Between the factor,For the present channel quality factor of WiFi user；
According to the KKT condition for seeking optimal solution, the expression of the time factor of LTE and WiFi user occupancy unlicensed spectrum is obtained
Formula:
According to the expression formula of the time factor of the LTE and WiFi user occupancy unlicensed spectrum and LTE SBS and WiFi
Instantaneous transmission speed R of the AP in unlicensed spectrumUAnd RW, obtain second formula.
8. according to the method described in claim 6, it is characterized in that, it is described utilize the second formula, be each LTE user and
The step of each non-distribution of WiFi user authorizes frequency spectrum resource, comprising:
According to the channel quality factor and second formula of each LTE user and WiFi user, each LTE is obtained
The optimal unlicensed spectrum transmission rate of user and each WiFi user, by unlicensed spectrum resource and each LTE user
And the optimal unlicensed spectrum transmission rate of each WiFi user corresponds, and is individually assigned to each LTE user and each
WiFi user.
9. a kind of co-allocation device of multi-user multiple services authorization and unlicensed spectrum characterized by comprising
User's acquiring unit, for the multiple LTE users and multiple WiFi users of acquisition request access system, wherein LTE user
Including LTE QoS user and LTE BE user；
Channel quality acquiring unit, for obtaining the present channel quality of each LTE QoS user；
First LTE QoS user's determination unit, for according to the transmission rate of current assignable authorized channels and described each
The present channel quality of LTE QoS user, selection meets the institute of minimum transmission rate demand from each LTE QoS user
There is the first LTE QoS user；The first LTE QoS user is the LTE QoS user that can distribute authorization frequency spectrum resource；
Frequency spectrum resource allocation unit is authorized, for providing using the authorization frequency spectrum determined previously according to maximization user's total utility principle
Source allocation algorithm is that each first LTEQoS user and each LTE BE user distribute authorization frequency spectrum resource；
Unlicensed spectrum resource allocation unit, for utilizing the unauthorized frequency determined previously according to maximization user's total utility principle
Spectrum resource allocation algorithm is that each LTE user and each WiFi user distribute unlicensed spectrum resource.
10. a kind of electronic equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein processing
Device, communication interface, memory complete mutual communication by communication bus；
The memory, for storing computer program；
The processor when for executing the computer program stored on the memory, realizes any institute of claim 1-8
The method and step stated.
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