CN106888509B - A kind of frequency spectrum resource allocation method in isomery band in self-return network - Google Patents
A kind of frequency spectrum resource allocation method in isomery band in self-return network Download PDFInfo
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- CN106888509B CN106888509B CN201710282631.0A CN201710282631A CN106888509B CN 106888509 B CN106888509 B CN 106888509B CN 201710282631 A CN201710282631 A CN 201710282631A CN 106888509 B CN106888509 B CN 106888509B
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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
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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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 invention discloses the frequency spectrum resource allocation methods in self-return network in a kind of isomery band, are related to cordless communication network technical field.For existing frequency spectrum resource assignment problem between access link and return link in self-return network in isomery band, this method be first depending on user received macro station signal strength establish incidence relation between user and small base station again, then the return link bandwidth according to needed for each small base station and macro user is followed successively by its from small to large ord and distributes resource；In the case where guaranteeing to meet user's minimum speed limit demand, surplus resources finally are distributed to the practical utilization power of frequency spectrum resource and the current data to be transferred amount of user according to each user, realizes while meeting user's transmission demand, promotes frequency spectrum resource utilization efficiency.
Description
Technical field
The present invention relates to mobile communications network field technologies, and in particular to one kind under self-return network, is adopted in isomery band
With in the beam switchover system of extensive antenna, divide for guaranteeing user QOS demand and promoting the frequency domain resource of the availability of frequency spectrum
With technology.
Background technique
With the low continuous promotion of the data transfer demands of Wireless Communication Equipment, mobile communication technology is just quickly towards 5G (
Five third-generation mobile communication technologies) development.Increase 1000 times and user experience rate to solve the following mobile network data flow
The demand for promoting 10~100 times is to compare to have by further excavating the new Radio Transmission Technology of new frequency resource and introducing
Two kinds of lifting means of prospect.In the coverage area of macrocellular, the side of capacity boost is carried out in hot zones using cellulor
Formula has been used widely.In Next-Generation Wireless Communication Systems, it is full that intensive even super-intensive cellulor deployment, which has been recognized,
A kind of important technical of sufficient user's ultra-high capacity demand.In conventional heterogeneous network, small base station generallys use wired connection
Mode carries out return data.If small base station carries out dense deployment, if still using traditional wired return network, net will lead to
The difficulty and operation cost of network deployment are significantly increased.In order to improve node deployment flexibility, reduce lower deployment cost, using and connect
The identical frequency spectrum of incoming link and technology (Self-Backhaul, from the technology of passback) carry out wireless backhaul transmission, are one and solve to be somebody's turn to do
The important research direction of problem.
When in order to solve using millimeter wave frequency band, path loss is larger, the closer deficiency of transmission range, using extensive antenna wave
Beam figuration technology is generally considered a kind of feasibly solution.However, when in extensive antenna beam shaping system, especially
Be disposed in beam switchover system it is multiple using band it is interior from the small base station that passback mode is returned when, how guarantee it is reliable
Property and meet the minimum user rate demand of user and meanwhile carry out efficiently frequency spectrum resource distribution be still a problem to be solved.
Summary of the invention
In view of this, the purpose of the present invention is to provide the frequency spectrum resource distribution sides in self-return network in a kind of isomery band
Method, solution, which is disposed in beam switchover system, in each beam coverage area in multiple bands, faces ground resource from the small base station of passback
Assignment problem.It is linked into neighbouring small base station according to the received macro base station signal quality of user by the sequence that grows from weak to strong first, and
Access bandwidth size needed for calculating small base station；Then according to small base station return path signal quality and the corresponding passback band of loading condition distribution
Width distributes resource further according to resource needed for macro user from small to large ord, finally presses the descending sequence of user's spectrum efficiency
And user's data to be transferred amount distributes respective bandwidth, realizes and simultaneously, is mentioning with meeting user's minimum speed limit demand and fairness
System spectral resources utilization efficiency is risen.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of frequency spectrum resource allocation method in isomery band in self-return network, method includes the following steps:
S1: mobile subscriber's macro base station signal strength based on the received is ranked up by ascending sequence；And press this
Sequence allows the most strong small base station of each user selection signal to be associated, if the small base station number of service subscribers is less than small base station beam number
This user, then be linked into small base station by amount in order, and otherwise, small base station stops accessing user；
S2: user is serviced for each small base station and corresponds to access bandwidth by each user of minimum speed limit transmission demand calculating, will be counted
The maximum value of calculation is as access link bandwidth resource；It is calculated according to each small load of base station and return link signal quality small from returning
Frequency spectrum resource needed for the return link of base station is that each small base station is accordingly distributed by the ascending sequence of required resource；
S3: according to macro user's minimum speed limit transmission demand and current signal quality, sequentially it is from small to large by required resource
Macro user distributes frequency spectrum resource；
S4: it is directed to residual spectrum resource, calculates the corresponding spectrum efficiency of each user first, i.e. unit frequency spectrum resource can transmit
Data transfer rate size, and user is ranked up by descending order；Then by the sequencing arranged, according to user cache
Resource size needed for data to be transferred amount size calculates, and accordingly distributed for user；When all users obtain enough resources or
When no residual spectrum resource can be used, then distribution terminates.
Further, in step sl, mobile subscriber periodically measures serving BS and interference base station signal, then root
Corresponding Signal to Interference plus Noise Ratio (SINR) is calculated according to measured value, and user is ranked up from small to large ord；According to current institute
Base station signal strength is zoomed in, is linked into neighbouring small base station, if small base station number of service subscribers has reached the upper limit, stopping is connect
Enter, remaining user, which remains under macro beam coverage, receives service.
Further, in step s 2, it according to each small base station user minimum speed limit demand and corresponding Signal to Interference plus Noise Ratio, calculates each
Access bandwidth needed for user, and select wherein maximum value as the current beam overlay area base station Nei little access bandwidth；Meanwhile root
According to base station return link quality and current load condition, frequency spectrum resource is returned for each small base station distribution is corresponding.
Further, in step s3, macro base station is calculated according to macro user rate transmission demand and corresponding signal quality
Return bandwidth size needed for each macro user, and be that macro user distributes resource by sequence from less to more.
Further, in step s 4, situation is accessed according to each user, required total resources are big when calculating unit of transfer's data volume
Small, for small base station user, required resource includes access-in resource and backhaul resources, and for macro user, required resource only has backhaul
Bandwidth resources, and user is ranked up from small to large ord by required total resources；Then according to each user's data to be transferred amount
Size distributes corresponding frequency spectrum resource, until resource allocation finish or current macro wave beam under all users obtain enough resources
When, then stop distributing, resource allocation process terminates.
The beneficial effects of the present invention are:
The present invention disposes Multiple Small Cell Sites time-frequency spectrum resource for simple beam overlay area in self-return network in isomery band
Assignment problem proposes one kind in the case where considering the factors such as user's minimum speed limit demand and fairness, is provided according to small station spare
Source situation accesses macro user wherein, and distributes total surplus resources in conjunction with user's data to be transmitted accounting situation, uses meeting
Family minimum speed limit demand and fairness simultaneously, improve system reliability and realize the efficient utilization to frequency spectrum resource.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is self-return network structural schematic diagram in the isomery band using extensive antenna；
Fig. 2 is the detailed allocation process diagram of macro station beam coverage area frequency spectrum resource；
Fig. 3 is flow chart of the present invention.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
Fig. 1 is self-return network structural schematic diagram in the isomery band using extensive antenna.In conventional heterogeneous network, small base
It stands in the presence of signal blind zone covering and capacity enhancing is mainly played a part of, return link is also usually to pass through wired connection side
Formula (such as optical fiber, coaxial cable) transmits data, and when small base station carries out dense deployment, wired passback deployment will lead to Network Dept.
The difficulty and operation cost of administration are significantly increased.The interior passback certainly of band is carried out using frequency spectrum resource identical with access link, is not only mentioned
Flexibility when high small base station deployment, also improves spectrum utilization efficiency.When using beam switchover system, cell will be drawn
It is divided into multiple fixed beams to be covered, when there are Multiple Small Cell Sites, rationally should carries out return link for each small base station and connect
Incoming link spectral bandwidth distribution, with guaranteeing small base station transmission reliability simultaneously, should meet as far as possible user rate transmission demand with
And data as much as possible are transmitted with limited resources.
Multiple Small Cell Sites time-frequency spectrum resource is disposed in simple beam overlay area in self-return network in present invention solution isomery band
A kind of frequency spectrum resource allocation plan used by assignment problem the following steps are included:
Step 1: mobile subscriber measures place macrocellular macro station signal strength and interference base station signal strength, so
Signal to Interference plus Noise Ratio is calculated according to measured value afterwards, and measures Signal to Interference plus Noise Ratio according to each user and accesses user again by ascending sequence
Into small base station.
Step 2: according to each user's actual speed rate demand and signal quality, access link frequency needed for calculating current each small base station
Bands of a spectrum are wide.
Step 3: distributing corresponding return bandwidth according to small load of base station and received signal quality for it, then root
Respective resources are distributed for macro user by sequence from less to more according to upstream bandwidth needed for macro user.
Step 4: being directed to residual spectrum resource, calculate the corresponding spectrum efficiency of each user first, i.e. unit frequency spectrum resource can
Transmission rate size, and user is ranked up by descending sequence；Then slow according to user by the sequencing arranged
Depositing data to be transferred amount size is that user distributes corresponding frequency spectrum resource, until all users obtain enough resources or provide without residual spectrum
When source can be used, then stop distributing.
In step 1, mobile subscriber is according to place macrocell area macro base station and interference base station signal strength measurement
Signal to Interference plus Noise Ratio is calculated, is ranked up by ascending sequence；And user is linked into the strongest small base of signal at this time in this order
In standing, if the small base station number of service subscribers is less than small base station beam quantity, this user is linked into order in small base station,
Otherwise, small base station stops accessing user.
In step 2, for each small base station user rate transmission requirements, access bandwidth needed for calculating each user.If user i
It is serviced by small base station j, then required access bandwidth is β to user i at this timei,j=γi/ri,j, wherein ri,j=log (1+SINRi,j) table
Show that Subscriber Unit frequency spectrum resource can realize rate, γiIndicate user's minimum speed limit demand, system is distributed by small base station and connect at this time
Entering bandwidth resources is maximum value in the spectral bandwidth for having and calculating for user
In step 3, it according to each small base station return data amount and return link quality, pressesIt calculates simultaneously
For each small base station distribution passback bandwidth resources, wherein cjIndicate that small base station j return link unit frequency spectrum resource can realize rate,
γiFor minimum speed limit demand needed for user i.Meanwhile pressing the ascending sequence of required resource according to macro user demand is user point
With upstream bandwidth resource.
In step 4, beam coverage area residual spectrum resource is at this timeWherein B is total available bandwidth.
At this point, accessing situation according to each user, required total resources size when unit of transfer's data volume is calculated, for small base station user, institute
Needing resource includes access-in resource and backhaul resources, and for macro user, required resource only has return bandwidth resource, and presses required total money
Source is from small to large ord ranked up user；Then corresponding frequency spectrum resource is distributed according to each user's data to be transferred amount, until
When resource allocation finishes or currently all users under macro wave beam obtain enough resources, then stop distributing.
Fig. 2 is the detailed allocation process diagram of macro station beam coverage area frequency spectrum resource.
Step 201: to the mobile subscriber in same beam coverage area, by received macro base station signal Signal to Interference plus Noise Ratio by small
It is ranked up to big sequence, is then linked into small base station in this order.It can provide when small base station user quantity is equal to small base station
When served beams quantity, small base station stops accessing user；Remaining does not access small base station user and still receives macro base station service.
Step 202: corresponding according to small base station user lowest serve rate demand and subscriber signal Mass Calculation user
Access bandwidth chooses wherein maximum value and is used as a small base station access bandwidth.
Step 203: according to each small base station return link signal quality and load state, calculating corresponding required passback band
It is wide；Then respective bandwidth is distributed for it according to the minimum transmission demand of macro user and signal quality.
Step 204: for residual spectrum resource, required frequency spectrum resource is big when each user of system-computed transmits identical data
It is small, by sequence from small to large, respective resources are distributed according to each user's data to be transferred amount, until all users obtain enough resources
Or when can be used without residual spectrum resource, then distribution terminates.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand 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 (4)
1. the frequency spectrum resource allocation method in a kind of isomery band in self-return network, it is characterised in that: this method includes following step
It is rapid:
S1: mobile subscriber's macro base station signal strength based on the received is ranked up by ascending sequence；And in this order
The most strong small base station of each user selection signal is allowed to be associated, if the small base station number of service subscribers is less than small base station beam quantity,
Then this user is linked into order in small base station, otherwise, small base station stops accessing user；
S2: servicing user for each small base station and correspond to access bandwidth by each user of minimum speed limit transmission demand calculating, will be calculated
Maximum value is as access link bandwidth resource；It is calculated according to each small load of base station and return link signal quality from the small base station of passback
Frequency spectrum resource needed for return link is that each small base station is accordingly distributed by the ascending sequence of required resource；
In step s 2, it according to each small base station user minimum speed limit demand and corresponding Signal to Interference plus Noise Ratio, calculates and is connect needed for each user
Enter bandwidth, and select wherein maximum value as the current beam overlay area base station Nei little access bandwidth；Meanwhile it being returned according to base station
Link-quality and current load condition return frequency spectrum resource for each small base station distribution is corresponding；
S3: being sequentially macro use by required resource according to macro user's minimum speed limit transmission demand and current signal quality from small to large
Frequency spectrum resource is distributed at family；
S4: it is directed to residual spectrum resource, calculates the corresponding spectrum efficiency of each user first, i.e. unit frequency spectrum resource can transmit data
Rate size, and user is ranked up by descending order；Then to be passed according to user cache by the sequencing arranged
Resource size needed for data volume size calculates, and accordingly distributed for user；When all users obtain enough resources or without surplus
When remaining frequency spectrum resource can be used, then distribution terminates.
2. the frequency spectrum resource allocation method in a kind of isomery band according to claim 1 in self-return network, feature exist
In: in step sl, mobile subscriber periodically measures serving BS and interference base station signal, is then calculated according to measured value
Corresponding Signal to Interference plus Noise Ratio SINR is obtained, and user is ranked up from small to large ord；It is strong according to currently zoomed in base station signal
Degree is linked into neighbouring small base station, if small base station number of service subscribers has reached the upper limit, stops accessing, remaining user still protects
It stays under macro beam coverage and receives service.
3. the frequency spectrum resource allocation method in a kind of isomery band according to claim 1 in self-return network, feature exist
In: in step s3, macro base station calculates needed for each macro user according to macro user rate transmission demand and corresponding signal quality
Return bandwidth size, and be that macro user distributes resource by sequence from less to more.
4. the frequency spectrum resource allocation method in a kind of isomery band according to claim 1 in self-return network, feature exist
In: in step s 4, situation is accessed according to each user, required total resources size when unit of transfer's data volume is calculated, for small base
Stand user, and required resource includes access-in resource and backhaul resources, and for macro user, required resource only has return bandwidth resource, and
User is ranked up from small to large ord by required total resources；Then it is distributed according to each user's data to be transferred amount size corresponding
Frequency spectrum resource then stops distributing when resource allocation finishes or currently all users under macro wave beam obtain enough resources,
Resource allocation process terminates.
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| CN107682935B (en) * | 2017-09-30 | 2020-09-22 | 重庆邮电大学 | Wireless self-return resource scheduling method based on system stability |
| CN108738025B (en) * | 2018-05-09 | 2023-04-07 | 大连声文科技发展有限公司 | Dynamic optimization and allocation method and system for bandwidth of mobile base station of offshore passenger-rolling ship |
| CN109041234B (en) * | 2018-08-13 | 2022-06-21 | 无锡北邮感知技术产业研究院有限公司 | Joint time slot and sub-channel scheduling method and device in self-return heterogeneous network |
| CN112888072B (en) * | 2021-01-25 | 2023-01-31 | 陕西师范大学 | eMBB and URLLC resource multiplexing method for guaranteeing service requirements |
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