CN108834175A - Equipment access and the resource allocation joint control method of queue driving in a kind of mMTC network - Google Patents
Equipment access and the resource allocation joint control method of queue driving in a kind of mMTC network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
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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
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Abstract
The invention discloses equipment accesses and resource allocation joint control method that queue in a kind of mMTC network drives, including：1) configuration information of base station broadcast access control parameter p and Physical Random Access Channel PRACH；2) each equipment overstock in mMTC network generates random number, when random number is less than control parameter p, then successfully passes access control program；3) each activation equipment in step 2) transmits selected pilot tone and respective equipment id information；4) when the pilot tone is only selected by an equipment, then corresponding equipment id information can be successfully decoded in base station；Otherwise, corresponding equipment id information can not be successfully decoded in base station；5) when activation equipment random access success, and the PUSCH channel idle that the activation equipment is distributed initiates data transmission immediately；6) corresponding idle instruction is broadcasted in base station at the end of current time slots；7) step 2) is repeated to 6), and until all data are transmitted, this method can effectively improve the handling capacity of network.
Description
Technical field
The invention belongs to wireless communication technology field, it is related to the equipment access and resource of queue driving in a kind of mMTC network
Distribute joint control method.
Background technique
It is big to advise with the high speed development towards all things on earth interconnection and ubiquitous acquisition of information and the Internet of Things (IoT) exchanged
Mould machine communication (massive Machine-Type communication, mMTC) has been proposed as in the following 5G network
Three categories scene in important a kind of communication scenes.Currently, machine type (MTC) equipment has been obtained extensively in daily life
General application, such as：Monitoring device in Intelligent traffic management systems, the wearable device in intelligent medical, towards industry 4.0
Sensing equipment, etc. in automatic control equipment, fire or emergency early warning system.It is expected that in coming 10 years, wireless network
In MTC device will be more than 50,000,000,000, mMTC network has huge application prospect.
When accessing and transmit while however, currently accommodating enormous quantity equipment in face of mMTC network, technically still deposit
In two crucial challenges：First challenge is how to carry out effective congestion control, when a large amount of equipment is sent out simultaneously
When playing access, if, because pilot resources are limited, network will occur serious pilot tone and touch without accessing control program accordingly
It hits, leads to network congestion, respective technical solution has been proposed to mitigate network congestion in numerous researchers.Another challenge
It how is exactly under the premise of total radio resource is certain in Physical Random Access Channel (PRACH) and Physical Uplink Shared Channel
(PUSCH) efficient resource allocation problem is carried out between, this is that many researchers are easy the problem of ignoring, they are it is often assumed that net
There are the subsequent data transmissions that enough PUSCH resources are used to be successfully accessed equipment in network.In fact, total resource is limited
Under the conditions of, even if equipment is successfully accessed in the contention access stage, which can also be transmitted unsuccessfully because lacking corresponding PUSCH money
Source；On the other hand, if excessive resource is divided into PUSCH, in the contention access stage, it will cause serious pilot tones to collide,
Cause to be successfully accessed quantity sharp fall, equally result in waste of resources.Therefore, exist in the distribution between PRACH and PUSCH resource
One balance, how to obtain optimal balance is a good problem to study.
In order to cope with above-mentioned challenge, Curve guide impeller one random competition access and data transmission stream towards mMTC are needed
Journey, and the equipment access and resource allocation joint control scheme of corresponding queue driving are proposed, to improve the handling capacity of network.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, queue driving in a kind of mMTC network is provided
Equipment access and resource allocation joint control method, this method can effectively improve the handling capacity of network.
In order to achieve the above objectives, equipment access and the resource allocation joint control that queue drives in mMTC network of the present invention
Method includes the following steps：
1) when time slot starts, connecing for current time slots is broadcasted by all devices of the down channel into mMTC network in base station
Enter the configuration information of control parameter p and Physical Random Access Channel PRACH；
2) each equipment overstock in mMTC network uniformly generates a random number on section (0,1), when any appliance is raw
At random number be less than control parameter p when, then the equipment successfully pass access control program, will successfully pass access control program
Equipment be denoted as activation equipment；When the random number that any appliance generates is more than or equal to control parameter p, then the equipment is when current
Gap is blocked, and the equipment keeps out of the way next time slot and again attempts to control program by access；
3) each activation equipment in step 2) selects pilot tone from pilot tone pond, then on prach to selected by the transmission of base station
The pilot tone selected and respective equipment id information；
4) base station attempts to decode corresponding equipment id information after receiving the pilot tone selected, when the pilot tone is only set by one
When alternative, then corresponding equipment id information can be successfully decoded in base station, at this time pilot tone Successful transmissions；When the pilot tone is multiple
When equipment selects, then corresponding equipment id information can not be successfully decoded in base station；Base station will test the pilot tone conduct of Successful transmissions
Random access response RAR；
5) when in mMTC network activation equipment receive the random access to match with itself pilot tone and equipment id information and answer
When answering RAR, then show activation equipment random access success, if what channel idle in RAR labeled as true, showed to be distributed
PUSCH channel idle, which initiates data transmission on the PUSCH channel immediately, if the channel idle in RAR marks
It is vacation, then the activation equipment enters wait state, until the channel idle until receiving base station broadcast in subsequent timeslot refers to；When
When activation equipment is not received by the random access response RAR to match with itself pilot tone and equipment id information, then show that this swashs
Equipment access failure living need to then reattempt to again in next time slot and control program by access；
6) whether base station PUSCH channel resource according to occupied by the marker for judgment that each activation equipment transmits the end of data weighs
It is new to enter the free time, and statistics reenters idle channel in current time slots, then broadcasts at the end of current time slots corresponding
Idle instruction then start in next time slot when the equipment being waited for receives the idle instruction of oneself channel
Carry out the transmission of data；
7) it repeats step 2) and completes queue driving in mMTC network until all data are transmitted to step 6)
Equipment access with resource allocation joint control.
In step 4) random access response RAR include identified pilot tone, equipment id information, predistribution RUSCH information
And channel idle label.
The configuration information of Physical Random Access Channel PRACH in step 1) is for accidental access stage pilot transmission
Resource block RBs and its quantity d*, correspondingly, the PUSCH resource block number l=q-d for data transmission*, wherein q is mMTC net
Resource block sum in network, if being respectively necessary for m resource block and n resource block one pilot tone of building and PUSCH channel, then mMTC
Pilot number M and PUSCH number of channel T in network is respectively：
Access control parameter p be the window size that is controlled of load is accessed in access control program control parameter p by
The estimated value of the overstocked number of devices mean value of current time slotsAnd optimal activation equipment number mean value r*It determines, wherein
Wherein, (r*, d*) solution procedure be：
If F is the number of devices that current time slots have new business to reach, B is the number of devices being blocked in step 2), and C is step
Rapid 4) the middle number of devices that pilot tone collision occurs, A is overstocked number of devices, then A=F+B+C；If new business is λ's with intensity
Poisson process reaches, then the Poisson distribution that overstocked number of devices A can be a with mean value is approximate, correspondingly, activation equipment number R
The Poisson distribution that mean value is r=pa is obeyed, if the number of devices of simultaneous selection pilot tone b is Mb, then MbObey the pool that mean value is r/M
Pine distribution, and stochastic variable Mb, it is mutually indepedent between b=1 ..., M, therefore the number of devices S obedience parameter being successfully accessed is
(M, P11) bi-distribution：
Wherein, P11The probability only selected by an equipment for pilot tone b：
If the rate in step 5) in device waiting queue arrival process is the number of devices S that each time slot is successfully accessed,
The rate of device waiting queue departure process is the number of devices that each time slot maximum that system is supported can complete data transmission
T, the length of waiting list are Q, then the length Q of current time slots waiting listtWith the length Q of next time slot waiting listt+1Pass
System is：
Qt+1=max { Qt+ S-T, 0 }
To prevent queue waiting time too long, the violation probability constraints of building waiting list length are：
Pr { Q > Qth< ∈
To set up waiting list length violation probability constraints, need to ensure：
Ψ (S, θ)≤Φ (T, θ)
Wherein, Ψ (S, θ) and Φ (T, θ) respectively indicates the effective access rate and effective transmission speed of queuing system,
In,
Wherein, θ is object queue index, wherein
According to queuing theory, after waiting list is steady, being averaged of waiting list leaves rate equal to average arrival rate,
If the Mean Speed is the handling capacity ζ of system, then have：
Building is with resource allocation d*And activation equipment intensity r*For independent variable, with the maximized optimization aim of throughput of system
Optimization problem, i.e.,
The optimization problem is solved, optimal resource allocation d is obtained*And activation equipment intensity r*。
Using two-step-rooting method algorithm solving optimization problem, optimal resource allocation d is obtained*And activation equipment intensity r*。
Base station uses iterative algorithm decision to go out to access control parameter p and Physical Random Access Channel in each time slot
The configuration information of PRACH.
The invention has the advantages that：
The equipment access that queue drives in mMTC network of the present invention is with resource allocation joint control method in concrete operations
When, it is added between random access and data transfer phase and waits in line process, pass through what is be successfully accessed in dynamic regulation network
Relationship between number of devices and the number of devices of Successful transmissions, avoids the waste of access-in resource or transfer resource, is to improve
The handling capacity of system.
Further, the present invention is by the combined optimization to access control parameter and resource allocation, to improve handling up for system
The robustness of amount and network.
Further, by adjusting waiting list index to be suitable for the waiting list length violation probability of varying strength about
Beam, to adapt to different service delay requirements.
Detailed description of the invention
Fig. 1 is the mMTC network scenarios figure in the present invention；
Fig. 2 is the improvement random access and data transmission stream journey figure in the present invention；
Fig. 3 is the functional block diagram of joint access control and resource allocation policy in the present invention；
Fig. 4 be in the present invention power system capacity realized with index queue change curve；
Fig. 5 is the performance comparison figure that the power system capacity of the invention with prior art changes with index queue；
Fig. 6 is the performance comparison that of the invention and prior art throughput of system reaches Strength Changes with new business
Figure；
Fig. 7 is the performance comparison for being successfully accessed probability and reaching Strength Changes with new business of the present invention and prior art
Figure；
Fig. 8 is the performance pair that of the invention and prior art overstocked number of devices mean value reaches Strength Changes with new business
Than figure；
Fig. 9 is that the team leader of the invention with prior art violates the performance comparison figure that probability changes with threshold value.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing：
With reference to Fig. 1 Fig. 2, in the large-scale communication network network, a large amount of MTC device based on competitive way random access to be arrived
Base station, and transmit respective data, wherein new business is reached with intensity for the Poisson process of λ in network, if each business
Data volume is identical, and q resource block in network is divided into PRACH resource and is used for random access by base station, and PUSCH resource is for counting
According to transmitting and optimal access control parameter p being arranged, to alleviate network congestion.
The equipment access and resource allocation joint control method that queue drives in mMTC network of the present invention include following step
Suddenly：
1) when time slot starts, connecing for current time slots is broadcasted by all devices of the down channel into mMTC network in base station
Enter the configuration information of control parameter p and Physical Random Access Channel PRACH；
2) each equipment overstock in mMTC network uniformly generates a random number on section (0,1), when any appliance is raw
At random number be less than control parameter p when, then the equipment successfully pass access control program, will successfully pass access control program
Equipment be denoted as activation equipment；When the random number that any appliance generates is more than or equal to control parameter p, then the equipment is when current
Gap is blocked, and the equipment keeps out of the way next time slot and again attempts to control program by access；
3) each activation equipment in step 2) selects pilot tone from pilot tone pond, then on prach to selected by the transmission of base station
The pilot tone selected and respective equipment id information；
4) base station attempts to decode corresponding equipment id information after receiving the pilot tone selected, when the pilot tone is only set by one
When alternative, then corresponding equipment id information can be successfully decoded in base station, at this time pilot tone Successful transmissions；When the pilot tone is multiple
When equipment selects, then corresponding equipment id information can not be successfully decoded in base station；Base station will test the pilot tone conduct of Successful transmissions
Random access response RAR；
5) when in mMTC network activation equipment receive the random access to match with itself pilot tone and equipment id information and answer
When answering RAR, then show activation equipment random access success, if what channel idle in RAR labeled as true, showed to be distributed
PUSCH channel idle, which initiates data transmission on the PUSCH channel immediately, if the channel idle in RAR marks
It is vacation, then the activation equipment enters wait state, until the channel idle until receiving base station broadcast in subsequent timeslot refers to；When
When activation equipment is not received by the random access response RAR to match with itself pilot tone and equipment id information, then show that this swashs
Equipment access failure living need to then reattempt to again in next time slot and control program by access；
6) whether base station PUSCH channel resource according to occupied by the marker for judgment that each activation equipment transmits the end of data weighs
It is new to enter the free time, and statistics reenters idle channel in current time slots, then broadcasts at the end of current time slots corresponding
Idle instruction then start in next time slot when the equipment being waited for receives the idle instruction of oneself channel
Carry out the transmission of data；
7) it repeats step 2) and completes queue driving in mMTC network until all data are transmitted to step 6)
Equipment access with resource allocation joint control.
In step 4) random access response RAR include identified pilot tone, equipment id information, predistribution RUSCH information
And channel idle label.
The configuration information of Physical Random Access Channel PRACH in step 1) is for accidental access stage pilot transmission
Resource block RBs and its quantity d*, correspondingly, the PUSCH resource block number l=q-d for data transmission*, wherein q is mMTC net
Resource block sum in network, if being respectively necessary for m resource block and n resource block one pilot tone of building and PUSCH channel, then mMTC
Pilot number M and PUSCH number of channel T in network is respectively：
Access control parameter p be the window size that is controlled of load is accessed in access control program control parameter p by
The estimated value of the overstocked number of devices mean value of current time slotsAnd optimal activation equipment number mean value r*It determines, wherein
Wherein, (r*, d*) solution procedure be：
If F is the number of devices that current time slots have new business to reach, B is the number of devices being blocked in step 2), and C is step
Rapid 4) the middle number of devices that pilot tone collision occurs, A is overstocked number of devices, then A=F+B+C；If new business is λ's with intensity
Poisson process reaches, then the Poisson distribution that overstocked number of devices A can be a with mean value is approximate, correspondingly, activation equipment number R
The Poisson distribution that mean value is r=pa is obeyed, if the number of devices of simultaneous selection pilot tone b is Mb, then MbObey the pool that mean value is r/M
Pine distribution, and stochastic variable Mb, it is mutually indepedent between b=1 ..., M, therefore the number of devices S obedience parameter being successfully accessed is
(M, P11) bi-distribution：
Wherein, P11The probability only selected by an equipment for pilot tone b：
If the rate in step 5) in device waiting queue arrival process is the number of devices S that each time slot is successfully accessed,
The rate of device waiting queue departure process is the number of devices that each time slot maximum that system is supported can complete data transmission
T, the length of waiting list are Q, then the length Q of current time slots waiting listtWith the length Q of next time slot waiting listt+1Pass
System is：
Qt+1=max { Qt+ S-T, 0 }
To prevent queue waiting time too long, the violation probability constraints of building waiting list length are：
Pr { Q > Qth< ∈
To set up waiting list length violation probability constraints, need to ensure：
Ψ (S, θ)≤Φ (T, θ)
Wherein, Ψ (S, θ) and Φ (T, θ) respectively indicates the effective access rate and effective transmission speed of queuing system,
In,
Wherein, θ is object queue index, wherein
According to queuing theory, after waiting list is steady, being averaged of waiting list leaves rate equal to average arrival rate,
If the Mean Speed is the handling capacity ζ of system, then have：
Building is with resource allocation d*And activation equipment intensity r*For independent variable, with the maximized optimization aim of throughput of system
Optimization problem, i.e.,
The optimization problem is solved, optimal resource allocation d is obtained*And activation equipment intensity r*。
Using two-step-rooting method algorithm solving optimization problem, optimal resource allocation d is obtained*And activation equipment intensity r*, specifically
For：
1a) initialize d*=d=1 and ζ*=0, it calculates correspondingThe peak value Ψ (S, θ) of effective access rate
|R=MAnd effective transmission speed Φ (T, θ) |R=M；
Situation 1：Ψ (S, θ) |R=M≤ Φ (T, θ) |R=M, then optimal solution r*=M；
Situation 2：Ψ (S, θ) |R=M> Φ (T, θ) |R=M, then dichotomizing search equation Ψ is used on real number interval [0, M]
The solution r of (S, θ)=Φ (T, θ)*；
1b) calculate corresponding handling capacity ζ=r*e-r/MIf ζ >=ζ*, then ζ is updated*=ζ, d*Otherwise=d does not update；Enable d
=d+1, and go to step 1a), until completing in feasible solution collected explanations or commentaries d*Until the search of ∈ { 1,2 ..., q-1 }.
Base station uses iterative algorithm decision to go out to access control parameter p and Physical Random Access Channel in each time slot
The configuration information of PRACH, specially：
2a) netinit：Time slot t=1 overstocks number of devices mean value
If 2b)Then the access control parameter of current time slots is set as：PRACH resource allocation quantity is：
D=d*；Otherwise, access control parameter is set as p=1, and the PRACH resource allocation quantity optimal by single step traversal search：
3c) all MTC device Broadcast step 2b into network) obtained in the result of decision (p, d)；
3d) after accidental access stage, the pilot number V to collide in current time slots is countedt, and thus estimate
The overstocked number of devices mean value of next time slot：
T=t+1 3e) is enabled, into next time slot, repeats step 2a) to 3d) until completing all data.
With reference to Fig. 4, power system capacity refers in optimal solution (r*, d*) maximum value of throughput of system realized, it can be seen that
Theoretical value and actual emulation value perfect matching of the invention, it was confirmed that theoretical accuracy of the invention.In addition, n is bigger, system is held
Measure it is smaller, this with it is intuitive consistent：Radio resource required for the data of one equipment of every transmission is more, and the processing capacity of system is got over
It is weak.
Choose comparison scheme, comparison scheme include no queue scheme, without queue and without access control program, have queue but nothing
Team leader violates probability constraints scheme and traditional fixed resource allocation plan (M=T).
The result from Fig. 5 is it can be confirmed that when index queue is intended to 0, and the present invention is close to the limit without constraint scheme
Performance；When index queue is intended to+∞, the present invention is intended to traditional M=T scheme, at this point for any team leader's threshold value,
It is all 0 that corresponding team leader, which violates probability, i.e. queue times are in empty state, and traditional M=T scheme can ensure that every time slot at
The number of devices of function access is less than or equal to the number of devices of maximum energy Successful transmissions, that is, ensures that queue length is 0, that is, correspond to this hair
The bright performance when index queue is intended to+∞.Furthermore as θ≤0.2, the power system capacity that the present invention realizes will be greater than no team
The actual value of column scheme, and team leader's violation probability constraints have compared strictly (if such as thresholding Q when θ=0.2th=20, it is corresponding
Violate probability ∈=0.0183 very little).Therefore the present invention can realize only on an acceptable violation Probability Basis
Inferior to the power system capacity of limiting performance scheme, it was demonstrated that the superiority of scheme may be implemented relative to tradition by the present invention.
With reference to Fig. 6, Fig. 7 and Fig. 8, the scheme that the present invention may be implemented relative to tradition is (except without the limiting of constraint scheme
Can be outer), bigger throughput of system is realized when new business intensity increases, realizes and higher successfully connects under all intensity
Enter probability and lower system overstocks number of devices.As a whole, the maximum new business that all schemes allow reaches intensity by each
The system capacity constraints achieved by the scheme, after new business, which reaches intensity, is more than the capacity, the handling capacity that system is realized is received
Capability value is held back, is no longer increased；And when new business reaches intensity close to the capacity, being successfully accessed probability can decline rapidly,
The exponential growth of overstocked number of devices simultaneously diffuses to infinity with time slot increase, shows that system is in the edge of collapse.Comprehensive three
From the point of view of item index, the present invention, which realizes, is only second to the performance without constraint limit scheme, relative to the achievable scheme of tradition, is
System can obtain higher Successful transmissions probability and lower overstocked number of devices when stablizing, and the robust performance of system is also stronger.
With reference to Fig. 9, of the invention violates probability curve below the theoretical curve of setting constraint, shows symbol completely of the invention
The team leader for closing setting violates probability demands, and other two comparison schemes are because lacking corresponding requirement in the design, simulation result
It seriously violates team leader and violates probability constraints.
Claims (6)
1. queue drives in a kind of mMTC network equipment access and resource allocation joint control method, which is characterized in that including following
Step：
1) when time slot starts, base station broadcasts the access control of current time slots by all devices of the down channel into mMTC network
The configuration information of parameter p and Physical Random Access Channel PRACH processed；
2) each equipment overstock in mMTC network uniformly generates a random number on section (0,1), generates when any appliance
When random number is less than control parameter p, then the equipment successfully passes access control program, will successfully pass setting for access control program
It is standby to be denoted as activation equipment；When the random number that any appliance generates is more than or equal to control parameter p, then the equipment is in current time slots quilt
Obstruction, and the equipment keeps out of the way next time slot and again attempts to control program by access；
3) each activation equipment in step 2) selects pilot tone from pilot tone pond, then transmits on prach to base station selected
Pilot tone and respective equipment id information；
4) base station attempts to decode corresponding equipment id information after receiving the pilot tone selected, when the pilot tone is only selected by an equipment
When selecting, then corresponding equipment id information can be successfully decoded in base station, at this time pilot tone Successful transmissions；When the pilot tone is by multiple equipment
When selection, then corresponding equipment id information can not be successfully decoded in base station；Base station will test the pilot tone of Successful transmissions as random
Access response RAR；
5) when in mMTC network activation equipment receive the random access response RAR to match with itself pilot tone and equipment id information
When, then show activation equipment random access success, if the channel idle in RAR is labeled as really showing distributed PUSCH letter
Road is idle, which initiates data transmission on the PUSCH channel immediately, if the channel idle in RAR is labeled as vacation,
The activation equipment enters wait state, until the channel idle until receiving base station broadcast in subsequent timeslot refers to；When activation is set
For when being not received by the random access response RAR to match with itself pilot tone and equipment id information, then show the activation equipment
Access failure need to then reattempt to again in next time slot and control program by access；
6) base station according to each activation equipment transmit the end of data marker for judgment occupied by PUSCH channel resource whether again into
Enter the free time, and statistics reenters idle channel in current time slots, is then broadcasted at the end of current time slots corresponding empty
Spare time instruction then starts to carry out when the equipment being waited for receives the idle instruction of oneself channel in next time slot
The transmission of data；
7) step 2) is repeated to step 6), and until all data are transmitted, queue driving is set in completion mMTC network
Standby access and resource allocation joint control.
2. queue drives in mMTC network according to claim 1 equipment access and resource allocation joint control method, special
Sign is, random access response RAR include identified pilot tone, equipment id information, predistribution RUSCH information and channel idle
Label.
3. queue drives in mMTC network according to claim 1 equipment access and resource allocation joint control method, special
Sign is that the configuration information of the Physical Random Access Channel PRACH in step 1) is for accidental access stage pilot transmission
Resource block RBs and its quantity d*, correspondingly, the PUSCH resource block number l=q-d for data transmission*, wherein q is mMTC net
Resource block sum in network, if being respectively necessary for m resource block and n resource block one pilot tone of building and PUSCH channel, then mMTC
Pilot number M and PUSCH number of channel T in network is respectively：
Access control parameter p is the window size controlled in access control program load, accesses control parameter p by current
The estimated value of the overstocked number of devices mean value of time slotAnd optimal activation equipment number mean value r*It determines, wherein
4. queue drives in mMTC network according to claim 3 equipment access and resource allocation joint control method, special
Sign is, (r*, d*) solution procedure be：
If F is the number of devices that current time slots have new business to reach, B is the number of devices being blocked in step 2), and C is step 4)
The middle number of devices that pilot tone collision occurs, A are overstocked number of devices, then A=F+B+C；If new business is the Poisson of λ with intensity
Process reaches, then the Poisson distribution that overstocked number of devices A can be a with mean value is approximate, correspondingly, activation equipment number R is obeyed
Mean value is the Poisson distribution of r=pa, if the number of devices of simultaneous selection pilot tone b is Mb, then MbObey the Poisson point that mean value is r/M
Cloth, and stochastic variable Mb, it is mutually indepedent between b=1 ..., M, therefore it is (M, P that the number of devices S being successfully accessed, which obeys parameter,11)
Bi-distribution：
Wherein, P11The probability only selected by an equipment for pilot tone b：
If the rate in step 5) in device waiting queue arrival process is the number of devices S that each time slot is successfully accessed, equipment
The rate of waiting list departure process is the number of devices T that each time slot maximum that system is supported can complete data transmission, etc.
Length to queue is Q, then the length Q of current time slots waiting listtWith the length Q of next time slot waiting listt+1Relationship
For：
Qt+1=max { Qt+ S-T, 0 }
To prevent queue waiting time too long, the violation probability constraints of building waiting list length are：
Pr { Q > Qth< e
To set up waiting list length violation probability constraints, need to ensure：
Ψ (S, θ)≤Φ (T, θ)
Wherein, Ψ (S, θ) and Φ (T, θ) respectively indicates the effective access rate and effective transmission speed of queuing system, wherein
Wherein, θ is object queue index, wherein
According to queuing theory, after waiting list is steady, being averaged for waiting list leaves rate equal to average arrival rate, if should
Mean Speed is the handling capacity ζ of system, then has：
Building is with resource allocation d*And activation equipment intensity r*For independent variable, with the excellent of the maximized optimization aim of throughput of system
Change problem, i.e.,
D=1 ..., q-1
S.t. Ψ (S, θ)≤Φ (T, θ)
The optimization problem is solved, optimal resource allocation d is obtained*And activation equipment intensity r*。
5. queue drives in mMTC network according to claim 1 equipment access and resource allocation joint control method, special
Sign is, using two-step-rooting method algorithm solving optimization problem, obtains optimal resource allocation d*And activation equipment intensity r*。
6. queue drives in mMTC network according to claim 1 equipment access and resource allocation joint control method, special
Sign is that base station uses iterative algorithm decision to go out to access control parameter p and Physical Random Access Channel PRACH in each time slot
Configuration information.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963272A (en) * | 2019-04-28 | 2019-07-02 | 西安交通大学 | A kind of accidental access method towards in differentiation MTC network |
| CN111294775A (en) * | 2020-02-10 | 2020-06-16 | 西安交通大学 | Resource allocation method based on H2H dynamic characteristics in large-scale MTC and H2H coexistence scene |
| CN111918358A (en) * | 2020-07-30 | 2020-11-10 | 苏州惠贝电子科技有限公司 | Intelligent activation system and method for terminal equipment in communication network based on big data access |
| CN112218384A (en) * | 2020-09-24 | 2021-01-12 | 中国科学院上海微系统与信息技术研究所 | Distributed queue random access method based on priority |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491622A (en) * | 2012-06-12 | 2014-01-01 | 电信科学技术研究院 | Uplink transmission method and device |
| CN105979591A (en) * | 2016-04-27 | 2016-09-28 | 西安交通大学 | Optimal user scheduling method based on minimum effective SINR under low-power-consumption large-connection scene |
| CN107295693A (en) * | 2016-04-13 | 2017-10-24 | 中国移动通信有限公司研究院 | A kind of accidental access method, base station and terminal |
| CN108234005A (en) * | 2016-12-21 | 2018-06-29 | 北京信威通信技术股份有限公司 | A kind of method and device of wave beam training |
-
2018
- 2018-07-23 CN CN201810814558.1A patent/CN108834175B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491622A (en) * | 2012-06-12 | 2014-01-01 | 电信科学技术研究院 | Uplink transmission method and device |
| CN107295693A (en) * | 2016-04-13 | 2017-10-24 | 中国移动通信有限公司研究院 | A kind of accidental access method, base station and terminal |
| CN105979591A (en) * | 2016-04-27 | 2016-09-28 | 西安交通大学 | Optimal user scheduling method based on minimum effective SINR under low-power-consumption large-connection scene |
| CN108234005A (en) * | 2016-12-21 | 2018-06-29 | 北京信威通信技术股份有限公司 | A kind of method and device of wave beam training |
Non-Patent Citations (1)
| Title |
|---|
| 卢楠: "mMTC 网络中基于空口流量的入侵检测", 《中兴通讯技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963272A (en) * | 2019-04-28 | 2019-07-02 | 西安交通大学 | A kind of accidental access method towards in differentiation MTC network |
| WO2020220785A1 (en) * | 2019-04-28 | 2020-11-05 | 西安交通大学 | Random access method in differentiated mtc network |
| CN111294775A (en) * | 2020-02-10 | 2020-06-16 | 西安交通大学 | Resource allocation method based on H2H dynamic characteristics in large-scale MTC and H2H coexistence scene |
| CN111918358A (en) * | 2020-07-30 | 2020-11-10 | 苏州惠贝电子科技有限公司 | Intelligent activation system and method for terminal equipment in communication network based on big data access |
| CN111918358B (en) * | 2020-07-30 | 2021-04-13 | 重庆六花网络科技有限公司 | Intelligent activation system and method for terminal equipment in communication network based on big data access |
| CN112218384A (en) * | 2020-09-24 | 2021-01-12 | 中国科学院上海微系统与信息技术研究所 | Distributed queue random access method based on priority |
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