CN107509250A - The multiple services mandate of multi-user and the combined distributing method and device of unlicensed spectrum - Google Patents
The multiple services mandate of multi-user and the combined distributing method and device of unlicensed spectrum Download PDFInfo
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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 multiple services mandate of multi-user and unlicensed spectrum, and for LTE and WiFi heterogeneous network systems, methods described includes：According to the transmission rate requirements difference of different business, the difference in channel quality of different user, and authorize the mass discrepancy of frequency spectrum and unlicensed spectrum itself, using two leg speed rate distribution methods, it pair can first distribute the distribution for authorizing the LTE user of frequency spectrum authorize frequency spectrum resource, secondly, on the basis of frequency spectrum distribution is authorized, unlicensed spectrum is further distributed to all LTE and WiFi users, realize when authorizing and unauthorized carrier aggregation, mandate 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 wireless communication field, more particularly to the multiple services mandate of multi-user and the polymerization of unlicensed spectrum point
Method of completing the square and device.
Background technology
With the development of wireless communication technology, having merged the heterogeneous network of plurality of communication systems turns into 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 each
Advantage, RRM is an important subject in heterogeneous network, and its target is efficient using limited wireless
The infrastructure of frequency spectrum, transimission power and wireless network.As shown in figure 1, 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 UMTS standard) it is operated in mandate frequency spectrum and and WiFi
AP (WiFi Wireless Access Point, WiFi wireless access points) shares unlicensed spectrum, and wherein LTE user has
There is polymerization to authorize the ability with unlicensed spectrum, WiFi user can only use unlicensed spectrum.Therefore, LTE and WiFi heterogeneous networks
RRM in network --- frequency spectrum distribution is a major issue urgently to be resolved hurrily.
Frequency spectrum distribution in LTE and WiFi heterogeneous networks is entered by Core Network (core network) master controller
OK.In the prior art, current frequency spectrum distributing method has：LTE user is authorizing and the frequency spectrum in the case of the polymerization of unauthorized frequency range
Distribution method, LTE user are authorizing the multiple services resource allocation methods of multi-user of frequency range, WiFi user in unauthorized frequency range
The multiple services frequency spectrum distributing method of multi-user.
The frequency spectrum distributing method of above-mentioned prior art is not all accounted for when authorizing and unauthorized carrier aggregation, 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 when authorizing and unauthorized carrier aggregation, the combined distributing method of frequency spectrum under multi-user's multi-service circumstances.
The content of the invention
The purpose of the embodiment of the present invention is the joint point for providing a kind of multiple services mandate of multi-user and unlicensed spectrum
Method of completing the square and device, for LTE and WiFi heterogeneous network systems, to realize when authorizing and unauthorized carrier aggregation, multi-user
The co-allocation of frequency spectrum under multi-service circumstances.Concrete technical scheme is as follows：
In a first aspect, the embodiments of the invention provide a kind of multiple services mandate of multi-user and the joint point of unlicensed spectrum
Method of completing the square, including：
Multiple LTE users of request access system and multiple WiFi users are obtained, wherein LTE user uses including LTE QoS
Family and LTE BE users；
Obtain the present channel quality of each LTE QoS users；
According to the current transmission rate of assignable authorized channels and the present channel matter of each LTE QoS users
Amount, all first LTE QoS users for meeting minimum transmission rate demand are selected from each LTE QoS users；It is described
First LTE QoS users are that can distribute the LTE QoS users for authorizing frequency spectrum resource；
It is described each using the mandate frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
First LTE QoS users and each LTE BE users, which distribute, authorizes frequency spectrum resource；
It is described each using the unlicensed spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
Individual LTE user and each WiFi user distribute unlicensed spectrum resource.
Optionally, the step of present channel quality of acquisition each LTE QoS users, including：Obtain each
The present channel quality factor of LTE QoS users；
The current present channel of the transmission rate of assignable authorized channels and each LTE QoS users of the basis
Quality, the step for meeting all first LTE QoS users of minimum transmission rate demand is selected from each LTE QoS users
Suddenly, including：
Each LTE QoS users are pressed into channel quality factor sort descending；
Since the maximum LTE QoS users of channel quality factor, following steps are performed：
JudgeWhether set up,
WhereinFor the transmission rate of the current assignable authorized channels, its initial valueCurrently may be used
The maximum data transfer rate R of the mandate frequency spectrum of distributionL,
For the present channel quality factor of each LTE QoS users, its initial valueMaximum for channel quality factor
The present channel quality factor of LTE QoS users,
r0For the minimum data transmission rate of QoS user's requests,
The queue of the LTE QoS users is
If set up, will with it is describedCorresponding LTE QoS users are stored in for preserving the first LTE QoS users'
QueueIn, with seasonReturn to the judgement
The step of whether setting up, until being unsatisfactory for the Rule of judgment.
Optionally, it is described to distribute calculation using previously according to the mandate frequency spectrum resource for maximizing the determination of user's total utility principle
Method is each first LTE QoS users and each LTE BE users distribute the step of authorizing frequency spectrum resource, including：
It is that each first LTE QoS users and each LTE BE users distribute and authorize frequency spectrum money using the first formula
Source；
First formula is：
Wherein, the first Lagrange multiplier λ need to meet condition：
For the optimal mandate spectrum transmissions speed of each LTE user, includingEach first LTE represented
The optimal mandate spectrum transmissions speed of QoS user,Remaining the LTE QoS outdoor except the first LTE QoS represented is used
The optimal mandate spectrum transmissions speed at family,The optimal mandate spectrum transmissions speed of each LTE BE users represented,
The queue of LTE user isThe queue of LTE BE users is
Optionally, it is described to determine to authorize frequency spectrum resource allocation algorithm previously according to maximization user's total utility principle, including：
Determined to authorize frequency spectrum resource distribution model according to maximum user's total utility；
According to frequency spectrum resource distribution model, QoS user utilities function, BE user utility functions is authorized, the first glug is constructed
Bright day function；
Wherein, the mandate frequency spectrum resource distribution model is：
The QoS user utilities function is,C is user to r0Demand
Degree,For the mandate spectrum transmissions speed of each LTE QoS users；
The BE user utilities function is,K is demand of the user to transmission rate
Degree, rmaxThe peak transfer rate of BE user's requests is represented,For the mandate spectrum transmissions speed of each LTE BE users
Rate；
Construction the first Lagrangian be：
According to the KKT conditions for asking for optimal solution, the partial derivative of first Lagrangian should meet condition：
The equation that should meet according to the partial derivative of first Lagrangian, obtain first formula.
Optionally, it is described to utilize the first formula, it is that each first LTE QoS users and each LTE BE users distribute
The step of authorizing frequency spectrum resource, including：
According to the channel quality factor of each first LTE QoS users and first formula, obtain described each
The optimal mandate spectrum transmissions speed of first LTE QoS users, frequency spectrum resource and each first LTE QoS users will be authorized
Optimal mandate spectrum transmissions speed correspond, be individually assigned to each first LTE QoS users；
According to the channel quality factor of each LTE BE users and first formula, each LTE BE are obtained
The optimal mandate spectrum transmissions speed of user, by remaining mandate frequency spectrum resource and the optimal mandate of each LTE BE users
Spectrum transmissions speed corresponds, and is individually assigned to each LTE BE users.
Optionally, it is described to be calculated using previously according to the unlicensed spectrum resource allocation for maximizing the determination of user's total utility principle
The step of method is each LTE user and each WiFi user distribution unlicensed spectrum resource, including：
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 transmission speed of each LTE BE users represented
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 transmission speed of each WiFi BE users represented
Rate,
The queue of WiFi user isThe queue of WiFi QoS users is
The queue of WiFi BE users isRUAnd RWRepresent LTE SBS and WiFi AP non-respectively
Authorize the instantaneous transmission speed on frequency spectrum.
Optionally, it is described to determine unlicensed spectrum resource allocation algorithm previously according to maximization user's total utility principle, wrap
Include：
Unlicensed spectrum resource allocator model is determined according to user's total utility is maximized, constructs the second Lagrangian；
Wherein, unlicensed spectrum resource allocator model is：
WithThe time factor of each LTE and each WiFi user occupancies unlicensed spectrum, t are represented respectivelysRepresent non-
Authorize frequency spectrum can the occupied total time factor；
Construction the second Lagrangian be：
According to the KKT conditions for asking for optimal solution, the table of the time factor of LTE and WiFi user occupancy unlicensed spectrums is obtained
Up to formula：
According to the expression formula of the time factor of the LTE and WiFi user occupancies unlicensed spectrum, and LTE SBS and
Instantaneous transmission speed Rs of the WiFi AP in unlicensed spectrumUAnd RW, obtain second formula.
Optionally, it is 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, including：
According to the channel quality factor and second formula of each LTE user and WiFi user, obtain described each
Individual LTE user and the optimal unlicensed spectrum transmission rate of 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
Individual WiFi user.
Second aspect, the embodiments of the invention provide a kind of multiple services mandate of multi-user and the joint point of unlicensed spectrum
With device, including：
User's acquiring unit, for the multiple LTE users for obtaining request access system and multiple WiFi users, wherein LTE
User includes LTE QoS users and LTE BE users；
Channel quality acquiring unit, for obtaining the present channel quality of each LTE QoS users；
First LTE QoS user's determining units, for the transmission rate according to current assignable authorized channels and described
The present channel quality of each LTE QoS users, select to meet minimum transmission rate demand from each LTE QoS users
All first LTE QoS users；The first LTE QoS users are that can distribute the LTE QoS users for authorizing frequency spectrum resource；
Frequency spectrum resource allocation unit is authorized, for using previously according to the mandate frequency for maximizing the determination of user's total utility principle
Spectrum resource allocation algorithm, it is that each first LTEQoS user and each LTE BE users distribute and authorize frequency spectrum resource；
Unlicensed spectrum resource allocation unit, for using 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 embodiments of the invention provide a kind of electronic equipment, including：Processor, communication interface, memory and
Communication bus, wherein, processor, communication interface, memory completes mutual communication by communication bus；
The memory, for depositing computer program；
The processor, during for performing the computer program deposited on the memory, realize the embodiment of the present invention
Any one method and step of first aspect.
The combined distributing method of a kind of multiple services mandate 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 mass discrepancy of frequency spectrum and unlicensed spectrum itself is authorized, using two leg speed rate distribution methods, it pair can first distribute and authorize frequency spectrum
LTE user authorize the distribution of frequency spectrum resource, secondly, on the basis of frequency spectrum distribution is authorized, further by unlicensed spectrum
All LTE and WiFi users are distributed to, are realized when authorizing and unauthorized carrier aggregation, to the multiple services mandate of multi-user
Co-allocation is reasonably carried out with unlicensed spectrum, improves the total utility of heterogeneous network system.Certainly, appointing for the present invention is implemented
One product or method it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it should be apparent that, drawings in the following description are only some embodiments of the present invention, based on the reality in the present invention
Apply example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Fig. 1 is the delivery of user traffic scene graph in LTE and WiFi heterogeneous networks；
Fig. 2 is one kind of the combined distributing method of the multiple services mandate of the multi-user of the embodiment of the present invention and unlicensed spectrum
Schematic flow sheet；
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 mandate 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.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It should be noted that the multiple services mandate of a kind of multi-user provided in an embodiment of the present invention and the connection of unlicensed spectrum
Distribution method is closed, can apply to the controller of the central site network of LTE and WiFi heterogeneous network systems, the controller includes desk-top
Computer, portable computer, server etc., are not limited thereto, any electronic equipment that can realize the embodiment of the present invention,
Belong to the protection domain of the embodiment of the present invention.
Referring to Fig. 2, Fig. 2 is that a kind of flow of the combined distributing method of the multiple services mandate of multi-user and unlicensed spectrum is shown
It is intended to, comprises the following steps：
S201, the multiple LTE users and multiple WiFi users, wherein LTE user for obtaining request access system include LTE
QoS user and LTE BE users；
In LTE and WiFi heterogeneous network systems, the controller of central site network receives multiple LTE users and multiple WiFi are used
The service access at family is asked and accessed, and is made a distinction the user according to the type of service of user, including LTE QoS users,
LTE BE users, and WiFi QoS users, WiFi BE users, needed wherein the type of service includes minimum transmission rate
QoS (Quality of Service, the service quality) business asked, and the BE (Best- without specific transmission rate requirement
Effort, do one's best) business, for the BE business without specific transmission rate requirement, its transmission rate is the bigger the better.
The type of service according to user makes a distinction the user, can be carried out according to specific business tine
Distinguish, such as QoS user is can be identified as service-users such as audio, video and mission criticals, for without special time demand
Web page browsing, the service-user such as 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；Can also be any can characterize information of the business to transmission rate requirements according to other
Make a distinction, such as the ViP user that user corresponding with service request is operator, there is the minimum specified to need to transmission rate
Ask, then can be defined as QoS user, non-ViP user is defined as BE user.For user specific differentiating method herein not
It is restricted.
S202, obtain the present channel quality of each LTE QoS users；
Because the respective channel of different user has different channel qualities, the channel quality can cause spectrum transmissions fast
The loss of rate, such as when bad channel quality, spectrum transmissions rate loss is excessive, it is more likely that can not meet the needs of user,
Therefore, it is necessary to obtain working as each LTE QoS users before distributing frequency spectrum resource to each user for accessing service request
Preceding channel quality, to ensure that the distribution of frequency spectrum resource after the influence of channel quality is considered, disclosure satisfy that user's request.
The acquisition of channel quality can be the quality that each channel prestored is extracted from the central network controller
Information or in real time acquisition current channel condition parameter such as time delay, signal to noise ratio etc., are calculated further according to the state parameter
Go out channel quality information.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 users
Road quality, all first LTE QoS users for meeting minimum transmission rate demand are selected from each LTE QoS users；
The first LTE QoS users are that can distribute the LTE QoS users for authorizing frequency spectrum resource；
Because unlicensed spectrum uses LBT (Listen Before Traffic, listem-before-talk) channel access technology,
The characteristics of with quality non-stationary, comparatively authorize the quality of frequency spectrum itself to be better than the unlicensed spectrum, therefore will authorize
Spectral priority distributes to the LTE QoS users of minimum-rate demand, preferably to meet rate requirement, realizes the reasonable of frequency spectrum
Utilize.
Consider influence of the user channel quality to transmission rate simultaneously, all first are chosen from all LTE QoS users
LTE QoS users, as the LTE QoS users that can distribute mandate frequency spectrum resource.The first LTE QoS users are channel quality
The LTE QoS users of minimum transmission rate demand are disclosure satisfy that, i.e., by the selection to the first LTE QoS users, enter one
Step improves the reasonability of frequency spectrum distribution.
Selection for the first LTE QoS users, can be more by being carried out in advance to the heterogeneous network channel
Secondary test checking, obtains a channel quality thresholds, chooses channel quality and is more than the user of the channel quality thresholds as institute
State the first LTE QoS users；It can also be according to the historical information that LTE QoS users are accessed in the heterogeneous network, determine
The maximum LTE QoS numbers of users for authorizing frequency spectrum can be supported, channel quality descending sort is pressed by the LTE QoS users, from
The user that channel quality ranks the first starts, and chooses user corresponding with the channel quality successively, reaches until choosing quantity
The maximum LTE QoS numbers of users for authorizing frequency spectrum can be supported, as the first LTE QoS users.It is every to select
The method for taking out the first LTE QoS users is used equally for this step.
S204, using the mandate frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle, for institute
State each first LTE QoS users and each LTE BE users distribute and authorize frequency spectrum resource；
S205, using previously according to the unlicensed spectrum resource allocation algorithm for maximizing the determination of user's total utility principle, it is
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,
Need to make the satisfaction of each user to reach optimal, that is, to maximize user's total utility as principle to realize.
Therefore, it is determined that during the frequency spectrum resource allocation algorithm, can be using the demand of each user as constraints,
By the frequency spectrum resource that total amount is limited, divided premised on the constraints, be individually assigned to after division each by disclosure satisfy that
Individual user, it is to be appreciated that the division is not unique, so that user utility is also not unique, from there through each
The total utility for all users that the user utility of individual user obtains is also not unique, to maximize user's total utility as principle,
Corresponding splitting scheme is that each user distributes frequency spectrum resource when choosing user's total utility maximum, you can so that point of frequency spectrum resource
User's total utility is maximized with realizing, is that can reach the satisfaction of each user in all possible allocative decision
Optimal scheme.The frequency spectrum resource of division is individually assigned to each user by the preferred plan.
Can be by each first LTE for the step S204 it is determined that during the frequency spectrum resource allocation algorithm
The demand of QoS user as constraints, the partition process preferentially to and each first LTE QoS users distribute and authorize
Frequency spectrum resource, when remaining mandate frequency spectrum resource is not enough to support next LTE QoS users, remaining resource is allocated to
Each LTE BE users.
It is to each LTE user and each for the step S205 it is determined that during the frequency spectrum resource allocation algorithm
WiFi user distributes unlicensed spectrum resource, that is to say, that each first LTE for having been allocated for authorizing frequency spectrum
QoS user and each LTE BE users, are still assigned unlicensed spectrum, according to the selection of the first LTE QoS users,
It is appreciated that thereby reducing frequency spectrum resource by the imperfect channel loss of quality, the conjunction of frequency spectrum resource is further increased
Reason utilizes, and improves user satisfaction.
The step S202 of the present channel quality for obtaining each LTE QoS users, optionally includes：Obtain each
The present channel quality factor of individual LTE QoS users, the channel quality factor are the channel qualities represented by concrete numerical value
The parameter of quality.
Referring to Fig. 3, Fig. 3 be embodiment illustrated in fig. 2 in step S203 a kind of idiographic flow schematic diagram, the step
S203, optionally comprise the following steps：
S301, each LTE QoS users are pressed into channel quality factor sort descending, maximum from channel quality factor
LTE QoS users start, and perform following steps：
S302, judgeWhether set up, whereinFor the current assignable authorized channels
Transmission rate, its initial valueFor the current assignable maximum data transfer rate R for authorizing frequency spectrumL,To be each
The present channel quality factor of LTE QoS users, its initial valueFor the current of the maximum LTE QoS users of channel quality factor
Channel quality factor, r0For the minimum data transmission rate of QoS user's requests, the queue of the LTE QoS users is
S303, if set up, will with it is describedCorresponding LTE QoS users are stored in be used for preserving the first LTE QoS
The queue at familyIn；
S304, orderReturn to the judgementThe step of whether setting up
S302；
S305, when being unsatisfactory for the step S302 Rule of judgment, the first LTE QoS users, which choose, to complete, knot
Beam is chosen.
In order to facilitate the idiographic flow shown in Fig. 3 is understood, illustrated below by a specific example.
Each LTE QoS users are pressed into channel quality factor sort descending, obtain queue
Judgment step is performed since being come the first user 1 of the queue, by the channel quality factor of user 1It can currently distribute
Mandate frequency spectrum maximum data transfer rate RLStep S302 is substituted into, is judgedWhether set up, it should be understood that
It is that the channel quality for the user 1 for coming the queue first place is best in all LTE QoS users, therefore for first
User, generally condition is to set up, and user 1 is put into the first LTE QoS Subscriber QueueIn；OrderJudgeWhether set up, if so, user 2 is put into described first
LTE QoS Subscriber QueueIn；OrderJudge
Whether set up, if so, user 3 is put into the first LTE QoS Subscriber QueueIn；Circulate, sentence until described successively
Broken strip part is invalid, obtains the first LTE QoS Subscriber QueueAnd terminate the selection.
Optionally, it is described to divide for each first LTE QoS users and each LTE BE users in the step S204
With frequency spectrum resource is authorized, step S2040 (not marking in flow charts) can be included：Using the first formula, for described each the
One LTE QoS users and each LTE BE users, which distribute, authorizes frequency spectrum resource；
First formula is：
Wherein, the first Lagrange multiplier λ need to meet condition：
For the optimal mandate spectrum transmissions speed of each LTE user, includingEach first LTE represented
The optimal mandate spectrum transmissions speed of QoS user,Remaining the LTE QoS outdoor except the first LTE QoS represented is used
The optimal mandate spectrum transmissions speed at family,The optimal mandate spectrum transmissions speed of each LTE BE users represented,
The queue of LTE user isThe queue of LTE BE users is
It can be seen that for different user, first formula has considered different service types, different channels quality to awarding
The influence of spectrum transmissions speed is weighed, accordingly, the optimal mandate frequency of each LTE user obtained according to first formula
Transmission rate is composed, is the most suitable mandate spectrum transmissions that still disclosure satisfy that different user demands under the influence of described
Speed, according to the optimal mandate spectrum transmissions speed frequency spectrum resource will be authorized to be allocated, can ensured to user service
Quality.
Optionally, it is described previously according to the mandate frequency for maximizing the determination of user's total utility principle in the step S204
Spectrum resource allocation algorithm, step S2041 (not marking in flow charts) can be included：Determine to authorize according to maximum user's total utility
Frequency spectrum resource distribution model；According to frequency spectrum resource distribution model, QoS user utilities function, BE user utility functions is authorized, construct
First Lagrangian；
Wherein, the mandate frequency spectrum resource distribution model is：
The QoS user utilities function is,C is user to r0Demand
Degree, it can be set according to historical experience,For the mandate spectrum transmissions speed of each LTE QoS users；
The BE user utilities function is,K is demand of the user to transmission rate
Degree, it can be set according to historical experience, rmaxThe peak transfer rate of BE user's requests is represented, can be by analyzing BE user
The historical information accessed in the heterogeneous network is set,For the mandate spectrum transmissions speed of each LTE BE users；
Construction the first Lagrangian be：
According to the KKT conditions for asking for optimal solution, the partial derivative of first Lagrangian should meet condition：
The equation that should meet according to the partial derivative of first Lagrangian, obtain first formula.Simultaneously
As can be seen that the edge utility function value of each being serviced user is equal from the equation, Lagrange multiplier λ is equal to,
I.e. optimal solution can ensure that each LTE user is equal to the desirability for authorizing frequency range speed, 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 appreciated that the KKT conditions refer to nonlinear programming problem have optimize solution must
Will and adequate condition, be generalization Lagrangian achievement.
Optionally, the step S2040, including：
According to the channel quality factor of each first LTE QoS users and first formula, obtain described each
The optimal mandate spectrum transmissions speed of first LTE QoS users, frequency spectrum resource and each first LTE QoS users will be authorized
Optimal mandate spectrum transmissions speed correspond, be individually assigned to each first LTE QoS users；
According to the channel quality factor of each LTE BE users and first formula, each LTE BE are obtained
The optimal mandate spectrum transmissions speed of user, by remaining mandate frequency spectrum resource and the optimal mandate of each LTE BE users
Spectrum transmissions speed corresponds, and is individually assigned to each LTE BE users.
Optionally, it is 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 transmission speed of each LTE BE users represented
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 transmission speed of each WiFi BE users represented
Rate,
The queue of WiFi user isThe queue of WiFi QoS users is
The queue of WiFi BE users isRUAnd RWRepresent LTE SBS and WiFi AP non-respectively
Authorize the instantaneous transmission speed on frequency spectrum.
It can be seen that second formula, has considered different service types, user channel quality is transmitted to unlicensed spectrum
The influence of speed, accordingly, the optimal unlicensed spectrum transmission speed of each LTE user obtained by second formula
Rate and the optimal unlicensed spectrum transmission rate of each WiFi user, it is that can still expire under the influence of described
The most suitable unlicensed spectrum transmission rate of sufficient user's request, can ensure the quality to user service.
Optionally, it is described to determine unauthorized frequency previously according to maximization user's total utility principle in the step S205
Spectrum resource allocation algorithm, step S2051 can be included：Unlicensed spectrum resource allocation mould is determined according to user's total utility is maximized
Type, construct the second Lagrangian；
Wherein, unlicensed spectrum resource allocator model is：
WithThe time factor of each LTE and each WiFi user occupancies unlicensed spectrum, t are represented respectivelysRepresent non-
Authorize frequency spectrum can the occupied total time factor；
Construction the second Lagrangian be：
According to the KKT conditions for asking for optimal solution, the table of the time factor of LTE and WiFi user occupancy unlicensed spectrums is obtained
Up to formula：
Because unlicensed spectrum uses LBT channel access technology, the transmission rate of unlicensed spectrum passes through its instantaneous biography
Defeated speed is multiplied acquisition with the time factor of user occupancy unlicensed spectrum, therefore non-according to LTE the and WiFi user occupancies
Authorize the expression formula of the time factor of frequency spectrum, and instantaneous transmission speed Rs of LTE SBS and the WiFi AP in unlicensed spectrumU
And RWObtain second formula.
It is similar with the principle that first formula meets maximum user's total utility, by second formula is by meeting
The expression formula for stating the time factor of KKT conditions obtains, therefore during utilization second formula distribution unlicensed spectrum resource, also protects
The satisfaction for having demonstrate,proved each user is identical, and obtained allocative decision meets maximum user's total utility.
Optionally, the step S2050, including：
According to the channel quality factor and second formula of each LTE user and WiFi user, obtain described each
Individual LTE user and the optimal unlicensed spectrum transmission rate of 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
Individual WiFi user.
In specific implementation process, each embodiment of the invention can individually be implemented, and can also combine implementation；This area
Technical staff can determine according to actual conditions, be not construed as limiting herein.
Corresponding to above-mentioned embodiment of the method, the embodiment of the present invention additionally provide a kind of multi-user it is multiple services mandate and it is 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 mandate and it is unauthorized
The structural representation of the co-allocation device of frequency spectrum, the device can include：
User's acquiring unit 401, for the multiple LTE users for obtaining request access system and multiple WiFi users, wherein
LTE user includes LTE QoS users and LTE BE users；
Channel quality acquiring unit 402, for obtaining the present channel quality of each LTE QoS users；
First LTE QoS users determining unit 403, for the transmission rate according to current assignable authorized channels and institute
The present channel quality of each LTE QoS users is stated, selects to meet minimum transmission rate need from each LTE QoS users
All first LTE QoS users asked；The first LTE QoS users are that can distribute the LTE QoS users for authorizing frequency spectrum resource；
Frequency spectrum resource allocation unit 404 is authorized, for being awarded using what is determined previously according to maximization user's total utility principle
Frequency spectrum resource allocation algorithm is weighed, is that each first LTEQoS user and each LTE BE users distribute and authorize frequency spectrum resource；
Unlicensed spectrum resource allocation unit 405, for using previously according to maximization user's total utility principle determination
Unlicensed spectrum resource allocation algorithm, it is that each LTE user and each WiFi user distribute unlicensed spectrum resource.
For device embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, it is related
Part 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 module realizes the purpose of this embodiment scheme.Those skilled in the art are not paying the feelings of creative work
Under condition, you can understand and implement.
The embodiment of the present invention additionally provides a kind of electronic equipment, as shown in figure 5, including 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
Into mutual communication；
The memory 503, for depositing computer program；
The processor 501, during for performing the computer program deposited on the memory 503, realize following walk
Suddenly：
Multiple LTE users of request access system and multiple WiFi users are obtained, wherein LTE user uses including LTE QoS
Family and LTE BE users；
Obtain the present channel quality of each LTE QoS users；
According to the current transmission rate of assignable authorized channels and the present channel matter of each LTE QoS users
Amount, all first LTE QoS users for meeting minimum transmission rate demand are selected from each LTE QoS users；It is described
First LTE QoS users are that can distribute the LTE QoS users for authorizing frequency spectrum resource；
It is described each using the mandate frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
First LTE QoS users and each LTE BE users, which distribute, authorizes frequency spectrum resource；
It is described each using the unlicensed spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
Individual LTE user and each WiFi user distribute unlicensed spectrum resource.
Certain processor 501 can also perform above-mentioned any one in the program deposited on running the memory 503
The method of the co-allocation of the multiple services mandate 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 EISA (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, controlling bus etc..For just
Only represented in expression, figure with a thick line, it is not intended that an only bus or a type of bus.
The communication that communication interface is used between above-mentioned electronic equipment and other equipment.
Memory can include random access memory (Random Access Memory, RAM), can also 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 at least one storage device for being 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 application specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other PLDs, 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 mass discrepancy of frequency spectrum and unlicensed spectrum itself is authorized, using two leg speed rate distribution methods, it pair can first distribute and authorize frequency spectrum
LTE user authorize the distribution of frequency spectrum resource, secondly, on the basis of frequency spectrum distribution is authorized, further by unlicensed spectrum
All LTE and WiFi users are distributed to, are realized when authorizing and unauthorized carrier aggregation, to the multiple services mandate 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 herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for system
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part 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 substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of multiple services mandate of multi-user and the combined distributing method of unlicensed spectrum, for LTE and WiFi heterogeneous networks
System, it is characterised in that methods described includes：
Obtain request access system multiple LTE users and multiple WiFi users, wherein LTE user include LTE QoS users and
LTE BE users；
Obtain the present channel quality of each LTE QoS users；
According to the current transmission rate of assignable authorized channels and the present channel quality of each LTE QoS users, from
Selection meets all first LTE QoS users of minimum transmission rate demand in each LTE QoS users；Described first
LTE QoS users are that can distribute the LTE QoS users for authorizing frequency spectrum resource；
It is described each first using the mandate frequency spectrum resource allocation algorithm determined previously according to maximization user's total utility principle
LTE QoS users and each LTE BE users, which distribute, authorizes 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. according to the method for claim 1, it is characterised in that
The step of present channel quality of acquisition each LTE QoS users, including：Obtain each LTE QoS users
The present channel quality factor；
The basis currently transmission rate of assignable authorized channels and the present channel matter of each LTE QoS users
Amount, the step for meeting all first LTE QoS users of minimum transmission rate demand is selected from each LTE QoS users
Suddenly, including：
Each LTE QoS users are pressed into channel quality factor sort descending；
Since the maximum LTE QoS users of channel quality factor, following steps are performed：
JudgeWhether set up,
WhereinFor the transmission rate of the current assignable authorized channels, its initial valueCan currently to distribute
Mandate frequency spectrum maximum data transfer rate RL,
For the present channel quality factor of each LTE QoS users, its initial valueFor the LTE that channel quality factor is maximum
The present channel quality factor of QoS user,
r0For the minimum data transmission rate of QoS user's requests,
The queue of the LTE QoS users is
If set up, will with it is describedCorresponding LTE QoS users are stored in the queue for preserving the first LTE QoS usersIn, with seasonReturn to the judgementWhether
The step of establishment, until being unsatisfactory for the Rule of judgment.
3. according to the method for claim 2, it is characterised in that described using previously according to maximization user's total utility principle
The mandate frequency spectrum resource allocation algorithm of determination, it is that each first LTE QoS users and each LTE BE users distribute and authorized
The step of frequency spectrum resource, including：
It is that each first LTE QoS users and each LTE BE users distribute and authorize frequency spectrum resource using the first formula；
First formula is：
Wherein, the first Lagrange multiplier λ need to meet condition：
For the optimal mandate spectrum transmissions speed of each LTE user, includingThe each first LTE QoS represented
The optimal mandate spectrum transmissions speed of user,Remaining the LTE QoS user outdoor except the first LTE QoS represented
Optimal mandate spectrum transmissions speed,The optimal mandate spectrum transmissions speed of each LTE BE users represented, LTE
The queue of user isThe queue of LTE BE users is
4. according to the method for claim 3, it is characterised in that described to be determined previously according to maximization user's total utility principle
Frequency spectrum resource allocation algorithm is authorized, including：
Determined to authorize frequency spectrum resource distribution model according to maximum user's total utility；
According to frequency spectrum resource distribution model, QoS user utilities function, BE user utility functions is authorized, the first Lagrange is constructed
Function；
Wherein, the mandate frequency spectrum resource distribution model is：
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The QoS user utilities function is,C is user to r0Desirability,For the mandate spectrum transmissions speed of each LTE QoS users；
The BE user utilities function is,K is demand journey of the user to transmission rate
Degree, rmaxThe peak transfer rate of BE user's requests is represented,For the mandate spectrum transmissions speed of each LTE BE users；
Construction the first Lagrangian be：
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The equation that should meet according to the partial derivative of first Lagrangian, obtain first formula.
5. according to the method for claim 3, it is characterised in that it is described to utilize the first formula, it is each first LTE
QoS user and each LTE BE users distribute the step of authorizing frequency spectrum resource, including：
According to the channel quality factor of each first LTE QoS users and first formula, described each first is obtained
The optimal mandate spectrum transmissions speed of LTE QoS users, frequency spectrum resource and each first LTE QoS users will be authorized most
Excellent mandate spectrum transmissions speed corresponds, and is individually assigned to each first LTE QoS users；
According to the channel quality factor of each LTE BE users and first formula, each LTE BE users are obtained
Optimal mandate spectrum transmissions speed, by the optimal mandate frequency spectrum of remaining mandate frequency spectrum resource and each LTE BE users
Transmission rate corresponds, and is individually assigned to each LTE BE users.
6. according to the method for claim 2, it is characterised in that described using previously according to maximization user's total utility principle
The unlicensed spectrum resource allocation algorithm of determination, it is that each LTE user and each WiFi user distribute unlicensed spectrum money
The step of source, including：
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 users' of expression
Optimal unlicensed spectrum transmission rate,The optimal unlicensed spectrum transmission rate of each LTE BE users represented,
rW,jFor the optimal unlicensed spectrum transmission rate of each WiFi user, includingThe WiFi QoS users' of expression
Optimal unlicensed spectrum transmission rate,The optimal unlicensed spectrum transmission rate of each WiFi BE users represented,
The queue of WiFi user isThe queue of WiFi QoS users isWiFi
The queue of BE user isRUAnd RWRepresent LTE SBS and WiFi AP in unauthorized frequency respectively
Instantaneous transmission speed in spectrum.
7. according to the method for claim 6, it is characterised in that described to be determined previously according to maximization user's total utility principle
Unlicensed spectrum resource allocation algorithm, including：
Unlicensed spectrum resource allocator model is determined according to user's total utility is maximized, constructs the second Lagrangian；
Wherein, unlicensed spectrum resource allocator model is：
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Construction the second Lagrangian be：
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According to the KKT conditions for asking for optimal solution, the expression of the time factor of LTE and WiFi user occupancy unlicensed spectrums is obtained
Formula：
According to the expression formula of the time factor of the LTE and WiFi user occupancies unlicensed spectrum, and LTE SBS and WiFi
Instantaneous transmission speed Rs of the AP in unlicensed spectrumUAnd RW, obtain second formula.
8. according to the method for claim 6, it is characterised 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, including：
According to the channel quality factor and second formula of each LTE user and WiFi user, each LTE is obtained
User and the optimal unlicensed spectrum transmission rate of each WiFi user, by unlicensed spectrum resource and each LTE user
And the optimal unlicensed spectrum transmission rate of each WiFi user corresponds, each LTE user and each is individually assigned to
WiFi user.
9. a kind of multiple services mandate of multi-user and the co-allocation device of unlicensed spectrum, it is characterised in that including：
User's acquiring unit, for the multiple LTE users for obtaining request access system and multiple WiFi users, wherein LTE user
Including LTE QoS users and LTE BE users；
Channel quality acquiring unit, for obtaining the present channel quality of each LTE QoS users；
First LTE QoS user's determining units, for the transmission rate according to current assignable authorized channels and described each
The present channel quality of LTE QoS users, the institute for meeting minimum transmission rate demand is selected from each LTE QoS users
There are the first LTE QoS users；The first LTE QoS users are that can distribute the LTE QoS users for authorizing frequency spectrum resource；
Frequency spectrum resource allocation unit is authorized, for being provided using previously according to the mandate frequency spectrum for maximizing the determination of user's total utility principle
Source allocation algorithm, it is that each first LTEQoS user and each LTE BE users distribute and authorize frequency spectrum resource；
Unlicensed spectrum resource allocation unit, for using previously according to the unauthorized frequency for maximizing the determination of user's total utility principle
Spectrum resource allocation algorithm, it is that each LTE user and each WiFi user distribute unlicensed spectrum resource.
10. a kind of electronic equipment, it is characterised 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 depositing computer program；
The processor, during for performing the computer program deposited on the memory, realize any institutes of claim 1-8
The method and step stated.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109699085A (en) * | 2018-10-17 | 2019-04-30 | 华为技术有限公司 | A kind of method and terminal device for transmitting data |
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| US20150156636A1 (en) * | 2013-12-03 | 2015-06-04 | Apple Inc. | Carrier Aggregation Using Unlicensed Frequency Bands |
| CN105472753A (en) * | 2016-02-15 | 2016-04-06 | 重庆邮电大学 | Cognitive small-cell dual resource allocation and disturbance management method based on LTE |
| CN106851663A (en) * | 2017-02-22 | 2017-06-13 | 重庆邮电大学 | Methods of the LTE U and Wi Fi in unauthorized frequency range fair co-existence under heterogeneous network |
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| US20150156636A1 (en) * | 2013-12-03 | 2015-06-04 | Apple Inc. | Carrier Aggregation Using Unlicensed Frequency Bands |
| CN105472753A (en) * | 2016-02-15 | 2016-04-06 | 重庆邮电大学 | Cognitive small-cell dual resource allocation and disturbance management method based on LTE |
| CN106851663A (en) * | 2017-02-22 | 2017-06-13 | 重庆邮电大学 | Methods of the LTE U and Wi Fi in unauthorized frequency range fair co-existence under heterogeneous network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109699085A (en) * | 2018-10-17 | 2019-04-30 | 华为技术有限公司 | A kind of method and terminal device for transmitting data |
| US11930523B2 (en) | 2018-10-17 | 2024-03-12 | Huawei Technologies Co., Ltd. | Data transmission method and terminal device |
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