CN106454859B - Access layer network dispositions method and system - Google Patents
Access layer network dispositions method and system Download PDFInfo
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- CN106454859B CN106454859B CN201610831513.6A CN201610831513A CN106454859B CN 106454859 B CN106454859 B CN 106454859B CN 201610831513 A CN201610831513 A CN 201610831513A CN 106454859 B CN106454859 B CN 106454859B
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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
- H04W16/18—Network planning tools
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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
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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Abstract
The present invention relates to a kind of access layer network dispositions method and system, method includes: the probability value for obtaining newly-built base station with regard to proximity on each node of the access chain of access layer network；Assuming that being pre-placed newly on the destination node on the access chain for the network equipment, wherein the destination node is this generation network equipment node on the access chain；Obtain the newly-built base station respectively with regard to proximity on each node the nearest new path length value for network equipment node of distance, wherein it is current it is new for network equipment node include existing newly for network equipment node on the destination node and the access chain；Each path length value according to each probability value and currently obtained determines the corresponding expected path value of the destination node；The deployment scheme of the access layer network is obtained for the corresponding expected path value of network equipment node according to each.Using the present invention program, the jumping fiber distance that newly-built base station is connected to PTN node can be shortened, save fibre core resource nervous between base station.
Description
Technical field
The present invention relates to optical communication network technology fields, more particularly to a kind of access layer network dispositions method and system.
Background technique
Local transmission network refers to that the solution set up within the scope of a districts and cities using optical fiber transmission technique is local
The transmission network entity of city's various businesses demand.Business demand includes wireless base station passback, group customer special line, home broadband
Deng usually being built by operator.The optical fiber transmission technique that local transmission network uses includes SDH (Synchronous Digital
Hierarchy, synchronous digital system)/MSTP (Multi-Service Transfer Platform, the multi-service based on SDH
Delivery platform), PTN (Packet Transport Network, Packet Transport Network), IP RAN (IPization wireless access network), WDM
(wavelength-division multiplex system)/OTN (Optical Transport Network, optical transfer network), PON ((Passive Optical
Network, passive optical-fiber network)) etc..
SDH/MSTP is the local transmission technology of relatively early stage a kind of, special using the business of fixed time slot transmission fixed-bandwidth
Point is that bandwidth is stable, protectiveness is good, the disadvantage is that bandwidth utilization efficiency is lower, is not available the grouping of current dynamic bandwidth and routing
Change business demand.
PTN and IP RAN is developed by SDH and router respectively, is traditional optical transport technology SDH/MSTP and IP routing
The product that device interpenetrates.Both technologies can meet packetized traffic bandwidth, QoS (Quality of Service,
Service quality), routing, protection etc. demand, therefore be common carrier solve local service mainstream transmission technology.
WDM/OTN is based on optical wavelength multiplexing technology, and optical signal, band can be transmitted simultaneously on multiple wavelength of an optical fiber
It is roomy, it is mainly used for solving the business demand of local network large bandwidth particle (GE or more).
The networking of above-mentioned transmission technology mainly uses ring structure, falls convenient for what the protection of service node and business routed
It changes, and PON is a kind of tree-like transmission technology of point-to-multipoint.Its main feature is that networking flexibility, cost is relatively low, fiber utilization is high,
But protectiveness is weaker, is primarily adapted for use in the access demand of the clients such as home broadband online.
The local transmission network of some operators is mainly set up using PTN technology at present.PTN technology is a kind of based on grouping
The two-way point-to-point interface channel of exchange business has and is suitble to various large or fine granule business, end to end networking capabilities.It compares
SDH provides " flexibility " transmission pipeline for being more suitable for IP operation characteristic, has protected mode abundant, encounters network event
It can be realized the carrier class service protection based on 50ms when barrier to switch, realize service protection and the recovery of transfer level；It inherits
The Operations, Administration and Maintenance mechanism (OAM) of SDH technology, the perfect OAM system with point-to-point connection, guarantees that network has guarantor
Shield switching, error detection and channel monitoring ability.
Based on the above characteristic, there is operator using PTN as the mainstream transmission technology for solving local network base station feedback circuit.
Base station passback refers to the circuit requirements between RAN layers of mobile network of base station (BS) and base station controller (BSC), some operators
Radio base station nodes are distributed more widely, and base station controller is predominantly located at the core node computer room in some county towns or city, therefore
Feedback circuit flow direction in base station is that each base station converges to urban district or county town core node.
In terms of network structure, as shown in Figure 1, the PTN network of operator's local network generally can be divided into three layers, access layer is
The PTN device of each base station arrives the aggregation node of each assembling area using annular dual homed, and composition converges ring between aggregation node, and
Core node connection is responsible for belonging to the business that convergence comes up into the core node where base station controller.Between core node
Kernel scheduling ring is set up using large capacity PTN device, is responsible for the scheduling of circuit between each core node.PTN access layer principle
Upper is annular, but can also use chain networking since cabled condition is unsatisfactory for or circuit debugging is pressed for time in practical construction.
As shown in Fig. 2, for newly-built base station PNT deployment way schematic diagram.Since access layer PTN major deployments are in 2G and 3G base
It stands and aggregation node PTN device sets up access ring, meet the circuit passback demand of base station.According to construction principle, it is complete to create base station
Portion uses PTN device, and original base station 2G that feedback circuit demand is solved using SDH equipment will gradually replace with PTN device.It is real
In the engineering of border, due to creating usually connecting nearby with neighbouring base station with sleeve optic cable for base station, the PTN device of base station is created
Also general and nearest PTN node or the ring-like or chain network of aggregation node composition (start usually chain, the later period is excellent again
It is melted into ring).
In the initial stage of PTN network, PTN number of nodes is less, usually newly-built base station access optical cable connect nearby this
A base station is not PTN device node, this just needs multiple jumping fiber that can be connected to nearest PTN node.Jumping fiber can excessively be made
At the anxiety of fibre core between original base station, pressure is brought to maintenance；Meanwhile part create node may due to jumping fiber too far and
Length is needed to configure away from optical module, and after later period website increases and optimizes, euclidean distance between node pair shortening is changed to short distance module again
Or increasing attenuator, this increases parameter to engineering.With many batches of construction of newly-built base station, this construction mode lacks complete
Face integrally considers, it is more chaotic to will cause access net, brings bigger workload to the transformation in later period.
Summary of the invention
The purpose of the present invention is to provide a kind of access layer network dispositions method and systems, it is possible to reduce in process of construction
The excessive situation of jumping fiber.
The purpose of the present invention is achieved through the following technical solutions:
A kind of access layer network dispositions method, comprising:
Obtain probability value of the newly-built base station with regard to proximity on each node of the access chain of access layer network；
Assuming that being pre-placed newly on the destination node on the access chain for the network equipment, wherein the destination node
For this generation network equipment node on the access chain；
Obtain the newly-built base station respectively with regard to proximity on each node distance nearest new for network equipment node
Path length value, wherein currently new includes existing new on the destination node and the access chain for network equipment node
For network equipment node；
Each path length value according to each probability value and currently obtained determines the corresponding expectation of the destination node
Path values；
The deployment scheme of the access layer network is obtained for the corresponding expected path value of network equipment node according to each.
A kind of access layer network deployment system, comprising:
Probability obtains module, general on each node of the access chain of access layer network with regard to proximity for obtaining newly-built base station
Rate value；
Assuming that module, is pre-placed newly on the destination node on the access chain for the network equipment for assuming, wherein
The destination node is this generation network equipment node on the access chain；
Length obtains module, for obtaining the newly-built base station nearest new of distance on each node with regard to proximity respectively
For the path length value of network equipment node, wherein it is current it is new for network equipment node include the destination node and described
It accesses existing newly for network equipment node on chain；
Processing module, each path length value for according to each probability value and currently obtaining determine the target section
The corresponding expected path value of point；
Scheme obtains module, for obtaining the access layer for the corresponding expected path value of network equipment node according to each
The deployment scheme of network.
According to the scheme of aforementioned present invention, be obtain newly-built base station with regard to proximity the access chain of access layer network each section
Probability value on point；Assuming that being pre-placed newly on the destination node on the access chain for the network equipment, wherein the target
Node is this generation network equipment node on the access chain；The newly-built base station is obtained respectively with regard to proximity in each section
The nearest new path length value for network equipment node of distance on point, wherein currently new includes institute for network equipment node
It states existing newly for network equipment node on destination node and the access chain；According to each probability value and currently obtain
Each path length value determines the corresponding expected path value of the destination node；According to each for the corresponding expectation of network equipment node
Path values obtain the deployment scheme of the access layer network, using the solution of the present invention, can find out the shortest section of expected path
Point is used as key node, is pre-placed newly for the network equipment, can shorten newly-built base station and be connected to newly for network equipment node
Jumping fiber distance saves fibre core resource nervous between base station.
Detailed description of the invention
Fig. 1 is local PTN network schematic diagram；
Fig. 2 is newly-built base station PNT deployment way schematic diagram；
Fig. 3 is the implementation process schematic diagram of the access layer network dispositions method of the embodiment of the present invention one；
Fig. 4 traditional PNT deployment way schematic diagram；
The PNT deployment way schematic illustration of Fig. 5 the present invention program；
Fig. 6 is model one (without branch) schematic diagram in specific example 1；
Fig. 7 is model one (band branch) schematic diagram in specific example 1；
Fig. 8 is two schematic diagram of model in specific example 2；
Fig. 9 is the composed structure schematic diagram of the access layer PTN network deployment system of the embodiment of the present invention two.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, with reference to the accompanying drawings and embodiments, to this
Invention is described in further detail.It should be appreciated that the specific embodiments described herein are only used to explain the present invention,
And the scope of protection of the present invention is not limited.
Since PTN substitution SDH equipment is network Development inexorable trend, the basic ideas of the present invention program are to change now
There is the mode for following the mating deployment PTN device in wireless base station completely, is pre-placed PTN device and current period in some key nodes
Wireless newly-built base station PTN network interworking together, the jumping fiber distance of PTN node is connected to so as to shorten newly-built base station, is saved
Nervous fibre core resource between base station.
Selection for key node is the mathematical model for establishing abstract, analyzes newly-built section by statistical method
Point connects the expectation of existing node path according to certain probability, finds out the shortest node of expected path as key node, and this
Phase creates base station and disposes PTN device together.After this deployment way, the jumping fiber road of this other base station of section can be reduced
Diameter, to save base station fibre core resource.The present invention program is described in detail below.
Embodiment one
The embodiment of the present invention provides a kind of access layer network dispositions method, and Fig. 3 is the access layer net of the embodiment of the present invention one
The implementation process schematic diagram of network dispositions method, as shown in figure 3, the access layer network dispositions method in the embodiment includes:
Step S101: probability value of the newly-built base station with regard to proximity on each node of the access chain of access layer network is obtained；
Here, the node includes newly for network equipment node and Ben Dai network equipment node, wherein newly for the network equipment
Node, which refers to, placed the newly node for the network equipment, this generation network equipment node refers to the node using this generation network equipment；
Here, each probability value can be set according to actual needs, and may be the same or different, generally, to create base
It stands and is preferred with regard to probability value of the proximity on each node of the access chain of access layer network is all the same, can be assumed in this, as one
Condition, it is assumed that be some constant, such as a；
Step S102: assuming that being pre-placed newly on the destination node on the access chain for the network equipment, wherein described
Destination node is this generation network equipment node on the access chain；
It should be noted that being pre-placed on the target node due to building herein newly for the network equipment, i.e. construction incite somebody to action this
It is substituted for for the network equipment newly for the network equipment for network equipment node corresponding, therefore, destination node at this moment is assumed
At one newly for network equipment node；
Step S103: obtaining the newly-built base station, with regard to proximity, nearest new of distance is set for network on each node respectively
The path length value of slave node, wherein currently new includes on the destination node and the access chain for network equipment node
It is existing newly for network equipment node；
Step S104: each path length value according to each probability value and currently obtained determines the destination node pair
The expected path value answered；
It specifically, can basisDetermine the corresponding expected path value of the destination node；
Wherein, QiIndicate the corresponding expected path value of the destination node, aiIndicate the newly-built base station with regard to proximity described
Access the probability value of j-th of node of chain, piExpression distance nearest new generation on j-th of node of the access chain with regard to proximity
The path length value of network equipment node, n indicate it is described access chain in the new number for network equipment node, m expression described in
Access the number of this generation network equipment node in chain；
Step S104: the portion of the access layer network is obtained for the corresponding expected path value of network equipment node according to each
Management side case；
Specifically, can be determined according to above-mentioned steps S102, step S103 each for the corresponding expectation of network equipment node
Path values, and expected path value smaller or the smallest is chosen for the corresponding expected path value of network equipment node according to each
For network equipment node, this generation network equipment node selected is determined as preecedence requirement and is placed newly for this generation of the network equipment
Network equipment node, is equivalent to key node above-mentioned and the current period creates base station and disposes together newly for the network equipment.Using this portion
After arranging method, the jumping fiber path of this other base station of section can be reduced, to save base station fibre core resource.
Access layer network dispositions method in one of the embodiments can also include: to judge on the access chain
Whether one this generation network equipment node, which is assumed, is pre-placed newly for the network equipment；If so, into according to each for network
The step of corresponding expected path value of device node obtains the deployment scheme of the access layer network；If it is not, being then never assumed
It places newly for selecting this generation network equipment node in this generation network equipment node of the network equipment as new destination node,
Assume the step of being pre-placed newly on the destination node on the access chain for the network equipment into described.That is, needing
Each is determined according to above-mentioned steps S102, step S103 for the corresponding expected path value of network equipment node, then execute basis
Each probability value and each path length value currently obtained determine the step of destination node corresponding expected path value.
In addition, it is contemplated that for having the case where branch on chain, it is clear that some node on branch is placed newly for network
Expected path value corresponding to equipment is placed newly corresponding for the network equipment greater than the node on the main chain that the branch is connected
Expected path value, therefore, some node on branch place newly for the network equipment it is opposite be it is unreasonable, therefore, can not
With the node considered on branch, for this purpose, the destination node is on the main chain of the access chain in one of the embodiments,
One this generation network equipment node.
In one of the embodiments, it is above-mentioned it is new for the network equipment be PTN device, above-mentioned this generation network equipment is
SDH equipment.
Scheme to facilitate the understanding of the present invention, for the network equipment as PTN device, this generation network equipment to be newly that SDH is set
It is standby, for network equipment node be newly PTN node, for this generation network equipment node is SDH node, with regard to the principle of the present invention and
Specific example is illustrated.
For ease of description, here abstracting the dispositions method of PTN device, present mode is newly-built base station by just
Dipped beam cable is connected to neighbouring base station, then is connected to PTN convergent point or base-station node such as Fig. 4 institute of existing PTN by jumping fiber
Show:
As can be seen from the figure for the newly-built base station A and B using PTN device, nearest optical fiber cable placed to L4 and L6 needs
Jumping fiber to L0 node can form PTN network, and path length is all 4 (assuming that every section is 1, to ignore this section of light accessed nearby
Cable), amount to occupy 16 cores (every section of 2 cores, bracket inner digital and).
The basic ideas of the present invention program are to take L2, mode Fig. 5 here using PTN device is pre-placed to key node
It is shown:
Such mode, which creates base station A and B, need to only be connected to PTN node L2, and respective path is 2；Increase PTN device comprising L2
The fibre core of occupancy amounts to and occupies 12 cores (bracket inner digital and).Compared to raw mode, path shortens 50%, and fibre core, which occupies, to be reduced
25%.The cost that new construction mode is paid is only to need to increase an end equipment, and under the premise of PTN Large scale construction, this
The increase of end equipment is also inevitable.
Base station PTN substitution SDH main trend under, emphasis consider how choose L2 node --- obviously selection L2 and
L3 is pre-placed PTN's the result is that different, therefore is summarized as following propositions: in the network of known a small amount of PTN node, such as
What, which is chosen, is pre-placed the node of PTN, so that next distance of newly laying foundations occurred at random has the expected path of PTN node most
It is short.
In a complex network, the selection of key node will not be it is apparent that first below from some simple
Model analyzed, have 3 supposed premises first:
Assuming that newly-built base station is more, convenient for comparing, to ignore the fibre core occupancy difference (pass for being pre-placed PTN node itself
In the case that key node is less, it can assume in this way).
Assuming that the node that newly-built base station is accessed nearby is for existing network node, probability is identical, is set as constant a.
Select the priority of key node only to ring or chain with associated relation (only convergent point be connected not counting)
Upper node is significant.
Specific example 1
This specific example 1 is to be said for the single-unit point-type (model one, as shown in Figure 6) established according to network structure
It is bright.
Such case placed PTN device for only one node on access chain.Consider that a length is the chain of n, wherein
L0 is the node of existing PTN device, it is assumed that the path that newly-increased node connects the existing PTN node of the distance on Li (i=0~n-1) is
Pi, and according to supposed premise 2, the probability connect in each node is equal to a.The expected path of so newly-increased node is Q=∑
(pi*a)/(n+1), and after Lj is pre-placed PTN, expected path value is Qj.
For path length be 4 chain, it is assumed that L1 place PTN device, create base station with regard to distance proximity L0 on recently
The path length value of PTN node (L0) is 0, creates base station with regard to the path length of the nearest PTN node (L1) of distance on proximity L1
Value is 0, and creating base station with regard to the path length value of the nearest PTN node (L1) of distance on proximity L2 is 1, creates base station with regard to proximity L3
The path length value of the nearest PTN node (L1) of upper distance is 2, creates the base station PTN node nearest with regard to distance on proximity L4
(L1) path length value is 3, therefore, Q1=(0*a+0*a+1*a+2*a+3*a)/5=6a/5；Similarly calculate Q2=4a/
5, Q3=3a/5, Q4=4a/5.Therefore in this case, it is more suitable preferentially to place PTN device by L3, is lower than worst-case value 25%.
The expected path value Q that length is other values can similarly be calculated.
For there is the case where branch on chain, as shown in Figure 7, it is clear that place PTN in branch node L21 and be not so good as L2, be not
Reasonably, therefore the Q value for calculating this kind of point can not had to, increased after L21 is equal to the node except L2 and computes repeatedly L2
Add 1a, and then directly adds 1a for the Q of L2, therefore calculate Q1=8a/6, Q2=5a/6, Q3=5a/6, Q4=7a/6, at this
In the case of kind, L2 and L3 be all it is optimal, be lower than worst-case value 37.5%.Therefore, it can be seen that priority will be sent out after increasing branch
Changing.
Specific example 2
This specific example 2 is to be said for the binodal point-type (model two, as shown in Figure 8) established according to network structure
It is bright.
Such case is for two sets of PTN devices existing on an access chain --- and such case, which typically occurs in two, to be had
Ring between the aggregation node of PTN.
When calculating Q value, unique difference of model two and model one is that node can select nearest PTN node.It is similar
The calculating of model one is it follows that Q1=4a/6, Q2=3a/6, Q3=3a/6, Q4=4a/6.L2 and L3 be most in this case
It is excellent, it is lower than worst-case value 25%；And the Q value of L1 and L4, L2 and L3 are symmetrical.It is similarly it can be concluded that branched under the model
As a result, no longer calculating here.
According to above calculating, it can be deduced that several significant inferences are for selecting key node (the lower node of Q value
Preferentially it is selected as key node):
In the case where not considering branch, the chain that path length is 3, the 2nd node Q value is lower, for path length for 4 or
The Q value of 5 chain, the 3rd node is lower；The chain that path length is 6, the Q value of the 4th node are lower.
After considering branch, increasing a branch node can make the Q value sequence of node on branch node place chain reduce.
If a choice is in order when increasing branch, it chooses lower node of Q value itself and can reduce and increase node from now on
When lowest q value.
The case where both ends are all PTN, it is lower close to intermediate node Q value.
Three cross rings, optimal Q value do not appear on the less ring of node.
PTN can be arranged according to this node and occupy fibre core or engineering construction hardly possible for point identical for Q value on same system
Yi Du compares.
Embodiment two
According to the access layer network dispositions method of the invention in above-described embodiment, the embodiment of the present invention also provides one kind and connects
Enter layer network deployment system.Fig. 9 is the composed structure schematic diagram of the access layer network deployment system of the embodiment of the present invention two.Fig. 9
In show converter station power reactive power control system of the invention a preferable examples structural schematic diagram.It is examined according to different
Worry factor may include shown in Fig. 9 all when implementing converter station power reactive power control system of the invention,
It can be only comprising a portion shown in Fig. 9.
In the access layer network deployment system of wherein one embodiment, module 201 is obtained including the probability in Fig. 9, is assumed
Module 202, length obtain module 203, processing module 204, scheme and obtain module 205, in which:
Probability obtain module 201, for obtain newly-built base station with regard to proximity access layer network access chain each node
Probability value；
Assuming that module 202, for assuming to be pre-placed on the destination node on the access chain newly for the network equipment,
In, the destination node is this generation network equipment node on the access chain；
Length obtains module 203, and for obtaining the newly-built base station, with regard to proximity, distance is nearest on each node respectively
The new path length value for network equipment node, wherein it is current it is new for network equipment node include the destination node and
It is existing newly for network equipment node on the access chain；
Processing module 204, each path length value for according to each probability value and currently obtaining determine the mesh
Mark the corresponding expected path value of node；
Scheme obtains module 205, for being connect according to each for described in the corresponding expected path value acquisition of network equipment node
Enter the deployment scheme of layer network.
Access layer network deployment system in one of the embodiments can also include the judgment module 206 in Fig. 9；
Judgment module 206 is used to judge whether this generation network equipment node on the access chain to be assumed in advance
It places newly for the network equipment；
Scheme obtains module 205 when the judgement result of the judgment module is to be, according to each for network equipment node
Corresponding expected path value obtains the deployment scheme of the access layer network；
Assuming that module 202 also the judgement result of the judgment module be it is no when, be never assumed placement newly set for network
This generation network equipment node is selected in standby this generation network equipment node as new destination node, is re-started hypothesis and is existed
The newly process for the network equipment is pre-placed on destination node on the access chain.
The destination node is this generation network equipment on the main chain of the access chain in one of the embodiments,
Node.
Probability of the base station with regard to proximity on each node of the access chain of access layer network is created in one of the embodiments,
It is worth all the same.
204 basis of processing module in one of the embodiments,Determine the target section
The corresponding expected path value of point；
Wherein, QiIndicate the corresponding expected path value of the destination node, ajIndicate the newly-built base station with regard to proximity described
Access the probability value of j-th of node of chain, piExpression nearest PTN of distance on j-th of node of the access chain with regard to proximity
The path length value of node, n indicate the number of the PTN node in the access chain, and m indicates this generation network in the access chain
The number of device node.
Scheme obtains module 205 according to each for the corresponding expectation road of network equipment node in one of the embodiments,
Diameter value selection expected path value smaller or the smallest is true by this generation network equipment node selected for network equipment node
It is set to preecedence requirement to place newly for this generation network equipment node of the network equipment.
The new generation network equipment is PTN device in one of the embodiments, and described sets for the network equipment for SDH
It is standby.
Access layer network deployment system provided in an embodiment of the present invention, it is pointed out that: above for access layer network
The description of deployment system, the description with above-mentioned access layer network dispositions method is similar, and has above-mentioned access layer network
The beneficial effect of dispositions method repeats no more to save length；Therefore, above to access layer net provided in an embodiment of the present invention
Undisclosed technical detail in network deployment system please refers to the description of the access layer network dispositions method of above-mentioned offer.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of access layer network dispositions method characterized by comprising
Obtain probability value of the newly-built base station with regard to proximity on each node of the access chain of access layer network；
Assuming that being pre-placed newly on the destination node on the access chain for the network equipment, wherein the destination node is institute
State this generation network equipment node on access chain；
Obtain the newly-built base station respectively with regard to proximity on each node the nearest new path for network equipment node of distance
Length value, wherein currently new includes existing newly for net on the destination node and the access chain for network equipment node
Network device node；
Each path length value according to each probability value and currently obtained determines the corresponding expected path of the destination node
Value；
The deployment scheme of the access layer network is obtained for the corresponding expected path value of network equipment node according to each.
2. access layer network dispositions method according to claim 1, which is characterized in that further include:
Judge that each on the access chain is pre-placed newly for whether network equipment node is assumed for the network equipment；
If so, into the deployment side for obtaining the access layer network for the corresponding expected path value of network equipment node according to each
The step of case；
If it is not, being then never assumed placement newly for selecting this generation network equipment in this generation network equipment node of the network equipment
Node is pre-placed on the destination node on the access chain into the hypothesis and newly sets for network as new destination node
Standby step.
3. access layer network dispositions method according to claim 1, it is characterised in that；
The destination node is this generation network equipment node on the main chain of the access chain；
Or
Newly-built base station is all the same with regard to probability value of the proximity on each node of the access chain of access layer network.
4. access layer network dispositions method according to claim 1, it is characterised in that:
According toDetermine the corresponding expected path value of the destination node；
Wherein, QiIndicate the corresponding expected path value of the destination node, ajIndicate the newly-built base station with regard to proximity in the access
The probability value of j-th of node of chain, pjIndicate with regard to proximity nearest new for network of on j-th of node of access chain distance
The path length value of device node, n indicate the new number for network equipment node in the access chain, and m indicates the access
The number of this generation network equipment node in chain.
5. access layer network dispositions method according to claim 1, which is characterized in that it is described according to each for the network equipment
The process for the deployment scheme that the corresponding expected path value of node obtains the access layer network includes:
It is described to be set for network equipment node corresponding the selection of expected path value expected path value the smallest for network according to each
This generation network equipment node selected is determined as preecedence requirement and placed newly for this generation network equipment of the network equipment by slave node
Node.
6. access layer network dispositions method according to one of claims 1 to 5, which is characterized in that the new generation network is set
Standby is PTN device, and described is SDH equipment for the network equipment.
7. a kind of access layer network deployment system characterized by comprising
Probability obtains module, for obtaining probability of the newly-built base station with regard to proximity on each node of the access chain of access layer network
Value；
Assuming that module, is pre-placed newly on the destination node on the access chain for the network equipment, wherein described for assuming
Destination node is this generation network equipment node on the access chain；
Length obtains module, for obtaining the newly-built base station nearest new for net of distance on each node with regard to proximity respectively
The path length value of network device node, wherein currently new includes the destination node and the access for network equipment node
It is existing newly for network equipment node on chain；
Processing module, each path length value for according to each probability value and currently obtaining determine the destination node pair
The expected path value answered；
Scheme obtains module, for obtaining the access layer network for the corresponding expected path value of network equipment node according to each
Deployment scheme.
8. access layer network deployment system according to claim 7, which is characterized in that further include judgment module；
The judgment module is used to judge that each on the access chain to be pre-placed for whether network equipment node is assumed
Newly for the network equipment；
The scheme obtains module when the judgement result of the judgment module is to be, corresponding for network equipment node according to each
Expected path value obtain the deployment scheme of the access layer network；
The hypothesis module, for also when the judgement result of the judgment module is no, being never assumed placement newly for network
This generation network equipment node is selected in this generation network equipment node of equipment as new destination node, re-starts hypothesis
The newly process for the network equipment is pre-placed on the destination node on the access chain.
9. access layer network deployment system according to claim 7, it is characterised in that:
The processing module according toDetermine the corresponding expected path value of the destination node；
Wherein, QiIndicate the corresponding expected path value of the destination node, ajIndicate the newly-built base station with regard to proximity in the access
The probability value of j-th of node of chain, pjIndicate with regard to proximity nearest new for network of on j-th of node of access chain distance
The path length value of device node, n indicate the new number for network equipment node in the access chain, and m indicates the access
The number of this generation network equipment node in chain；
Or
The scheme obtains module and chooses expected path value minimum for the corresponding expected path value of network equipment node according to each
This generation network equipment node, by this generation network equipment node selected be determined as preecedence requirement place newly for the network equipment
This generation network equipment node.
10. the access layer network deployment system according to one of claim 7 to 9, it is characterised in that；
The destination node is this generation network equipment node on the main chain of the access chain；
Or
Newly-built base station is all the same with regard to probability value of the proximity on each node of the access chain of access layer network；
Or
The new generation network equipment is PTN device, and described is SDH equipment for the network equipment.
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