CN106714093A - Cellular and D2D (Device-to-Device) communication combined user access and slice partitioning method - Google Patents
Cellular and D2D (Device-to-Device) communication combined user access and slice partitioning method Download PDFInfo
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- CN106714093A CN106714093A CN201710097180.3A CN201710097180A CN106714093A CN 106714093 A CN106714093 A CN 106714093A CN 201710097180 A CN201710097180 A CN 201710097180A CN 106714093 A CN106714093 A CN 106714093A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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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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Abstract
The invention relates to a cellular and D2D (Device-to-Device) communication combined user access and slice partitioning method. According to the method, a virtual slice of a cellular base station is assumed to occupy a certain frequency spectrum ratio and have a certain processing capacity; and a user is positioned in a network fusion coverage region in which a cellular communication mode and a D2D communication mode co-exist and can select to establish association with a suitable network mode, modeling of a user combined transmission delay is used as an optimal objective, and combined optimization allocation of a user access mode selection and slice partitioning strategy is implemented. The method comprises the steps of: 1, constructing a cellular base station network slice; 2, modeling a user combination utility function D; 3, modeling a user transmission delay in the cellular communication mode; 4, modeling a user transmission delay in the D2D communication mode; 5, modeling user virtual resource allocation restrictive conditions; and 6, based on minimization on the user combined transmission delay, determining the user access and slice partitioning strategy. The method can implement minimization of an access delay under the conditions that an associated network of the user is optimal and the slice partitioning strategy is optimal.
Description
Technical field
The invention belongs to wireless communication technology field, particularly wireless network resource distribution technique field, it is related to a kind of honeybee
Nest D2D communication virtual resource allocation methods.
Background technology
With the explosive increase of broadband wireless services demand, traditional cellular network cannot meet user's request.
Terminal direct connection (Device-to-Device, the D2D) communication technology carries out direct communication by between user is received and dispatched, and without base
Station is forwarded, and while load of base station is effectively reduced, is capable of achieving network spectrum effect and efficiency is obviously improved, it has also become be great
The novel wireless communication technology of development prospect.
In the network scenarios that cellular network and D2D are blended, the access module selection of user and resource allocation are to determine
The major issue of QoS of customer and network performance.By introducing Internet resources Intel Virtualization Technology, by network infrastructure with
The service that it is provided is separated, and to support the different shared identical infrastructure of service, is capable of achieving the efficient management of Internet resources,
Lifting network resource utilization and user's transmission performance.In recent years, studied and considered that the user of honeycomb D2D fusion scenes accesses
And network select permeability.
In having studied at present, there is virtualization D2D link circuit resource point of the document for ascending honeycomb D2D UNE scenes
With problem, it is proposed that one kind is used for optimal division of resources framework, with maximization network handling capacity.Also document considers multiple cells
Downlink and uplink link, for virtual resource allocation and cache problem in cellular network, propose that a kind of information centre is wireless
Virtualization and the framework of D2D communications, are maximized, and reduce back haul link with the total revenue for realizing MVNO
Expense.
The correlative study of the existing virtual resources allocative decision based on honeycomb D2D communications is more to consider handling capacity and network
The problems such as income, the business propagation delay time performance in less research network may cause network delay larger, for delay sensitive
For user equipment, it is difficult to effective guarantee transmission performance and Consumer's Experience.Additionally, being cut in the existing less consideration cellular network of research
The disposal ability of piece, it is difficult to realize the lifting of slice transmission and process performance.
The content of the invention
In view of this, accessed and section division side it is an object of the invention to provide a kind of honeycomb D2D communication federated users
Method, in the method, it is assumed that the virtual sliced sheet of cellular basestation occupies certain frequency spectrum ratio, and with certain disposal ability；
User is located at the network integration overlay area that cellular communication modes and D2D communication patterns coexist, and may be selected and suitable network mould
Formula sets up association, and modeling user's joint transmission time delay is optimization aim, realizes subscriber access mode selection and section partition strategy
Combined optimization distribution.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of honeycomb D2D communications federated user is accessed and section division methods, is comprised the following steps：Step 1), build honeybee
Nest base station network is cut into slices；Step 2), modeling user's joint utility function D；Step 3), modeling cellular communication modes under user pass
Defeated time delay；Step 4), modeling D2D communication patterns under user's propagation delay time；Step 5), modeling user virtual resource allocation limitation
Condition；Step 6), determined based on user's joint transmission minimizing delay user access and section partition strategy.
Further, in step 1) in, cellular basestation virtual sliced sheet is built, specially according to cellular basestation frequency spectrum resource and place
Reason ability divides virtual sliced sheet, makes δkiDuring for honeycomb mode user k access networks section i, the section frequency spectrum accounts for base station total frequency spectrum
Ratio, makes ρkiWhen accessing cellular network section i for user k, the slicing treatment ability accounts for base station throughput ratio, and 1≤k≤
K, K are number of users, and 1≤i≤M, M are honeycomb slices number, δkiAnd ρkiShould meet：0≤δki≤ 1,0≤ρki≤1。
Further, in step 2) in, modeling user's joint utility function D is the total business transmission of all access network users
Time delay sum, i.e.,Wherein, DkIt is the business propagation delay time of user k, 1≤k≤K models DkFor：Wherein,Passed for user k carries out the corresponding business of information transfer using D2D communication patterns
Defeated time delay,For i-th section of user k occupancy cellular basestation carries out the corresponding business transmission of information transfer under cellular communication modes
Access delay, αkIt is the model selection associated variable of user k, αk=1 represents user k selection D2D communication patterns, αk=0 represents use
Family k selects cellular communication modes.
Further, in step 3) in, the user's propagation delay time under modeling cellular communication modes：According to formulaUser k takes transmission overall delay when cellular basestation is cut into slices for i-th in calculating cellular communication modes, wherein,Corresponding propagation delay time when taking i-th section of cellular basestation for user k,Cut for i-th for user k takes cellular basestation
Corresponding channel access time delay during piece；
Further, in step 3) in, corresponding propagation delay time when modeling user k takes i-th section of cellular basestation
For：Wherein, LkData packet length transmitted by user k,When taking i-th section of cellular basestation for user k
Corresponding transmission rate, according to formulaModelingWherein, B is cellular basestation bandwidth, PkiFor
K-th CU cellular basestation, i-th section carries out corresponding transmit power during information transfer,It is k-th user and honeybee
The channel gain of link, N between nest base station0It is noise power spectral density.
Further, in step 3) in, modeling user k takes access delay during i-th section of cellular basestationFor：Wherein, μ and λ represent the service speed and business arrival rate of cellular basestation respectively.
Further, in step 4) in, corresponding propagation delay time when modeling user k is carried out data transmission using D2D patternsWherein,Corresponding transmission rate when being carried out data transmission using D2D patterns for user k, according to formulaModelingWherein, BdIt is D2D link transmission bandwidths,For user k is carried out using D2D patterns
Transmit power during data transfer,It is the channel gain of link between user k and D2D user opposite end.
Further, in step 5) in, user's virtual resource allocation restrictive condition is modeled, wherein, resource allocation restrictive condition
It is modeled as meetingAndService transmission rate restrictive condition is modeled asWherein, RkFor
The service transmission rate of user k, It is the minimal service transmission rate of user k.
Further, in step 6) in, in the case where resource allocation and customer service demand qualifications is met, during with user's joint transmission
Prolong and be minimised as target, optimization determines subscriber access mode and section partition strategy, i.e.,
The beneficial effects of the present invention are：The method of the invention is used phone user and D2D by virtualizing section
Family carries out rational resource allocation, can realize accessing under the optimal partition strategy optimal conditions with section of the related network of user
Minimizing delay.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is heterogeneous network scene schematic diagram；
Fig. 2 is the schematic flow sheet of the method for the invention.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
The present invention proposes that a kind of honeycomb D2D communication users are accessed and section division methods, by resource virtualizing by basis
Facility and frequency spectrum resource are separated, and assume that base station has certain computing capability to frequency spectrum, using section come to phone user and
D2D user carries out rational resource allocation, realizes connecing under the optimal partition strategy optimal conditions with section of related network of user
Enter minimizing delay.
A kind of honeycomb D2D communication users of the present invention are accessed and section division methods, it is assumed that cellular communication modes and
In the heterogeneous network that D2D communication patterns coexist, between two kinds of different access networks, and because using inside same access network
Orthogonal access mode, thus information transfer is noiseless；There are multiple users in the heterogeneous network, and user is logical positioned at honeycomb
The network's coverage area that letter pattern and D2D communication patterns coexist, may be selected to be associated with the foundation of suitable network mode；Modeling user
Joint transmission time delay is the total business propagation delay time sum of all access network users, and net is realized based on user's joint time delay optimization
Network pattern association and section partition strategy.
, there are multiple phone users in Fig. 1 heterogeneous network scene figures, user is led to by model selection in heterogeneous network
Letter, total business propagation delay time is minimized by optimizing user network association and section partition strategy.
Fig. 2 is the schematic flow sheet of the method for the invention, as illustrated, the method for the invention specifically includes following step
Suddenly：
1) network of cellular basestations section is built；
Cellular basestation virtual sliced sheet is built, is specially divided according to cellular basestation frequency spectrum resource and disposal ability and virtually cut
Piece, makes δkiDuring for honeycomb mode user k access networks section i, the section frequency spectrum accounts for base station total frequency spectrum ratio, makes ρkiIt is user k
When accessing cellular network section i, the slicing treatment ability accounts for base station throughput ratio, and 1≤k≤K, K are number of users, 1
≤ i≤M, M are honeycomb slices number, δkiAnd ρkiShould meet：0≤δki≤ 1,0≤ρki≤1。
2) modeling user joint utility function D；
Modeling user's joint utility function D is the total business propagation delay time sum of all access network users, i.e.,Wherein, DkIt is the business propagation delay time of user k, 1≤k≤K models DkFor：
Wherein,For user k carries out the corresponding business propagation delay time of information transfer using D2D communication patterns,It is cellular communication mould
User k takes i-th section of cellular basestation and carries out the corresponding business transmission access delay of information transfer, α under formulakIt is user k's
Model selection associated variable, αk=1 represents user k selection D2D communication patterns, αk=0 represents user k selection cellular communication modes.
3) the user's propagation delay time under modeling cellular communication modes；
User's propagation delay time under modeling cellular communication modes, specifically：According to formulaHoneycomb is calculated to lead to
User k takes transmission overall delay when cellular basestation is cut into slices for i-th in letter pattern, wherein,For user k takes cellular basestation the
Corresponding propagation delay time during i section,Corresponding channel access time delay when taking i-th section of cellular basestation for user k.
Corresponding propagation delay time when modeling user k takes i-th section of cellular basestationFor：Wherein, LkFor
Data packet length transmitted by user k,Corresponding transmission rate when taking i-th section of cellular basestation for user k, according to public affairs
FormulaModelingWherein, B is cellular basestation bandwidth, PkiIt is k-th CU cellular basestation
I-th section carries out corresponding transmit power during information transfer,For the channel of link between k-th user and cellular basestation increases
Benefit, N0It is noise power spectral density.
Modeling user k takes the access delay that cellular basestation is cut into slices when carrying out information transfer for i-th
Wherein, μ and λ represent the service speed and business arrival rate of cellular basestation respectively.
4) the user's propagation delay time under modeling D2D communication patterns；
Corresponding propagation delay time when modeling user k is carried out data transmission using D2D patternsWherein,It is use
Family k corresponding transmission rates when being carried out data transmission using D2D patterns, according to formulaModelingWherein, BdIt is D2D link transmission bandwidths,Transmit power when being carried out data transmission using D2D patterns for user k,For
The channel gain of link between user k and D2D user opposite end.
5) user's virtual resource allocation restrictive condition is modeled；
Modeling user's virtual resource allocation restrictive condition, wherein, resource allocation restrictive condition is modeled as meetingAndService transmission rate restrictive condition is modeled asWherein, RkIt is the industry of user k
Business transmission rate, It is the minimal service transmission rate of user k.
6) determine that user accesses and section partition strategy based on user's joint transmission minimizing delay；
In the case where resource allocation and customer service demand qualifications is met, with user's joint transmission minimizing delay as mesh
Mark, optimization determines subscriber access mode and section partition strategy, i.e.,
Consider user model selection, business demand and section and divide qualifications, based on user's joint transmission time delay
Minimize and determine subscriber access mode and section partition strategy, i.e.,
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (3)
1. a kind of honeycomb D2D communications federated user is accessed and section division methods, it is characterised in that：Comprise the following steps：
Step 1), build network of cellular basestations section：Specially divide virtual according to cellular basestation frequency spectrum resource and disposal ability
Section, makes δkiDuring for honeycomb mode user k access networks section i, the section frequency spectrum accounts for base station total frequency spectrum ratio, makes ρkiIt is use
When family k accesses cellular network section i, the slicing treatment ability accounts for base station throughput ratio, and 1≤k≤K, K is number of users
Mesh, 1≤i≤M, M are honeycomb slices number, δkiAnd ρkiShould meet：0≤δki≤ 1,0≤ρki≤1；
Step 2), modeling user's joint utility function D：Modeling user's joint utility function D is the total of all access network users
Business propagation delay time sum, i.e.,Wherein, DkIt is the business propagation delay time of user k, 1≤k≤K models DkFor：Wherein,Passed for user k carries out the corresponding business of information transfer using D2D communication patterns
Defeated time delay,For i-th section of user k occupancy cellular basestation carries out the corresponding business biography of information transfer under cellular communication modes
Defeated access delay, αkIt is the model selection associated variable of user k, αk=1 represents user k selection D2D communication patterns, αk=0 represents
User k selects cellular communication modes；
Step 3), the user's propagation delay time under modeling cellular communication modes：According to formulaCalculate cellular communication mould
User k takes transmission overall delay when cellular basestation is cut into slices for i-th in formula, wherein,For user k takes cellular basestation i-th
Corresponding propagation delay time during section,Corresponding channel access time delay when taking i-th section of cellular basestation for user k；
Step 4), the user's propagation delay time under modeling D2D communication patterns：When modeling user k takes i-th section of cellular basestation pair
The propagation delay time answeredFor：Wherein, LkData packet length transmitted by user k,For user k takes honeycomb
Corresponding transmission rate during i-th section in base station, according to formulaModelingWherein, B is honeybee
Nest bandwidth of base station, PkiIt is corresponding transmit power when k-th CU cellular basestation is cut into slices for i-th carries out information transfer,
It is the channel gain of link between k-th user and cellular basestation, N0It is noise power spectral density；
Step 5), model user's virtual resource allocation restrictive condition；Wherein, resource allocation restrictive condition is modeled as meetingAndService transmission rate restrictive condition is modeled asWherein, RkIt is the business of user k
Transmission rate, It is the minimal service transmission rate of user k；
Step 6), determine that user accesses and section partition strategy based on user's joint transmission minimizing delay：Meeting resource point
With and customer service demand qualifications under, with user's joint transmission minimizing delay as target, optimization determine user access mould
Formula and section partition strategy, i.e.,
2. honeycomb D2D communications federated user according to claim 1 is accessed and section division methods, it is characterised in that：
Step 3) in, corresponding propagation delay time when modeling user k is carried out data transmission using D2D patternsWherein,It is use
Family k corresponding transmission rates when being carried out data transmission using D2D patterns, according to formulaModelingWherein, BdIt is D2D link transmission bandwidths,Transmit power when being carried out data transmission using D2D patterns for user k,
It is the channel gain of link between user k and D2D user opposite end.
3. honeycomb D2D communications federated user according to claim 1 and 2 is accessed and section division methods, it is characterised in that：
Step 3) in, modeling user k takes the access delay that cellular basestation is cut into slices when carrying out information transfer for i-th Wherein, μ and λ represent the service speed and business arrival rate of cellular basestation respectively.
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| CN108206790A (en) * | 2018-01-11 | 2018-06-26 | 重庆邮电大学 | A kind of selection of SDN joint routes and resource allocation methods based on network slice |
| CN108259628A (en) * | 2018-02-28 | 2018-07-06 | 重庆邮电大学 | Content caching and user-association combined optimization method in isomery cellular network |
| CN110062424A (en) * | 2019-04-19 | 2019-07-26 | 西安电子科技大学 | A kind of service-oriented frequency spectrum dicing method, device and computer storage medium |
| CN111567113A (en) * | 2018-04-25 | 2020-08-21 | 华为技术有限公司 | Session establishment method, relay equipment selection method, relay equipment registration method and equipment |
| CN111669834A (en) * | 2020-07-06 | 2020-09-15 | 中南大学 | D2D-assisted resource allocation method in millimeter wave cellular network |
| CN111757354A (en) * | 2020-06-15 | 2020-10-09 | 武汉理工大学 | Multi-user slicing resource allocation method based on competitive game |
| CN112423267A (en) * | 2020-10-14 | 2021-02-26 | 南京大学 | Vehicle networking heterogeneous resource dynamic slicing method based on Lyapunov random optimization |
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| CN113395724A (en) * | 2021-08-13 | 2021-09-14 | 北京玻色量子科技有限公司 | Mode optimization method and device for base station |
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| CN108206790A (en) * | 2018-01-11 | 2018-06-26 | 重庆邮电大学 | A kind of selection of SDN joint routes and resource allocation methods based on network slice |
| CN108206790B (en) * | 2018-01-11 | 2021-03-16 | 重庆邮电大学 | SDN joint routing selection and resource allocation method based on network slice |
| CN108259628B (en) * | 2018-02-28 | 2020-11-10 | 重庆邮电大学 | Content caching and user association joint optimization method in heterogeneous cellular network |
| CN108259628A (en) * | 2018-02-28 | 2018-07-06 | 重庆邮电大学 | Content caching and user-association combined optimization method in isomery cellular network |
| CN111567113A (en) * | 2018-04-25 | 2020-08-21 | 华为技术有限公司 | Session establishment method, relay equipment selection method, relay equipment registration method and equipment |
| CN111567113B (en) * | 2018-04-25 | 2024-01-30 | 华为技术有限公司 | Session establishment method, relay device selection method, registration method and device |
| CN110062424B (en) * | 2019-04-19 | 2021-02-02 | 西安电子科技大学 | Service-oriented spectrum slicing method and device and computer storage medium |
| CN110062424A (en) * | 2019-04-19 | 2019-07-26 | 西安电子科技大学 | A kind of service-oriented frequency spectrum dicing method, device and computer storage medium |
| US20210274508A1 (en) * | 2020-03-02 | 2021-09-02 | Fujitsu Limited | Control device and control method |
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| CN111757354A (en) * | 2020-06-15 | 2020-10-09 | 武汉理工大学 | Multi-user slicing resource allocation method based on competitive game |
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| CN111669834A (en) * | 2020-07-06 | 2020-09-15 | 中南大学 | D2D-assisted resource allocation method in millimeter wave cellular network |
| CN111669834B (en) * | 2020-07-06 | 2022-06-24 | 中南大学 | D2D-assisted resource allocation method in millimeter wave cellular network |
| CN112423267A (en) * | 2020-10-14 | 2021-02-26 | 南京大学 | Vehicle networking heterogeneous resource dynamic slicing method based on Lyapunov random optimization |
| CN112423267B (en) * | 2020-10-14 | 2022-04-22 | 南京大学 | Vehicle networking heterogeneous resource dynamic slicing method based on Lyapunov random optimization |
| CN113395724B (en) * | 2021-08-13 | 2021-10-15 | 北京玻色量子科技有限公司 | Mode optimization method and device for base station |
| CN113395724A (en) * | 2021-08-13 | 2021-09-14 | 北京玻色量子科技有限公司 | Mode optimization method and device for base station |
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