CN104579764A - Dynamic data link resource allocation method based on shared time slot pools - Google Patents
Dynamic data link resource allocation method based on shared time slot pools Download PDFInfo
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Abstract
The invention discloses a dynamic data link resource allocation method based on shared time slot pools. The method comprises steps as follows: a plurality of shared time slot pools are established for network participation groups in need at the planning and design stage of a data link network, during running of the data link network, each user informs a network management node of the periodicity of the additional requirement for time slots, and the network management node determines the actual allocable quantity for each user according to the whole network time slot requirement and then takes out time slots from the shared time slot pools to allocate the time slots to the corresponding network users; the users release time slot blocks and return the time slot blocks to the shared time slot pools through the network management node when the users do not need the additionally allocated time slot blocks. With the adoption of the method, time slot resources can be shared among all data link network users and different data link services, so that the limited data link network resources can be fully utilized.
Description
Technical field
The invention belongs to the technical field that overall, the datalink network tissue of Data-Link system, networking etc. are relevant, refer more particularly to the method for datalink network planning management and time interval resource dynamic conditioning, directly apply to the design and evaluation of tactical data link system.
Background technology
At present, conventional Data-Link has Link 4 (TADIL-C), Link 11 (TADIL-A), Link 16 (TADIL-J) and Link 22, working frequency range mainly includes HF, UHF, Lx, and access way mainly comprises frequency division multiple access (FDMA), time division multiple access (TDMA) and poll.Under normal circumstances in the network planning and design phase, time interval resource has been assigned to each network user, but in this stage, the slot requirements of number of users and user is unpredictable often, in addition in network operation process, the slot requirements of user may change, and therefore time interval resource static allocation mode cannot meet fast changing operational need.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of Data-Link resource dynamic distributing method based on shared time slot pond, datalink network time interval resource is reallocated, improve the utilization ratio of system time gap resource, and meet the demand of system user.
The technical solution adopted for the present invention to solve the technical problems comprises the following steps:
A (), in the datalink network design planning stage, according to the time slot additional demand estimated and user capacity, unappropriated time slot sets shares time slot pond for each network participates in setting up standing; The design principle sharing time slot pond comprises:
(1) each reallocation time slot pond can only be relevant with a network participation group;
(2) each reallocation time slot pond can only send and send with the message of this reallocation time slot pond network of relation participation group;
(3) single network participation group can use multiple reallocation time slot pond simultaneously;
(4) network designs support at most 8 time slot ponds of reallocating;
(5) reallocation time slot ponds can be made up of multiple time slot block;
B (), in datalink network running, the network user, according to the real-time change of own service amount, estimates extra slots quantity required in next reallocation cycle
wherein, C represents the traffic carrying capacity in T reporting period; I represents business information capacity, and namely business will send the number of message; M represents the message capacity of time slot, namely wraps restriction; T represents the reporting period that business produces; T
zrepresent the reallocation cycle;
C (), when the traffic carrying capacity of network user's reality has exceeded the traffic peak that time slot shared by it can launch, this user, to webmaster node sending time slots reallocation message, applies for extra time interval resource; Time slot reallocation message comprises reallocation pond number and slot requirements, and wherein slot requirements is the percentage of asking the timeslot number distributed in the next one reallocation cycle to account for reallocation pond timeslot number;
D () webmaster node receives the time slot application of the network user after, from shared time slot pond, select free timeslot block, step is as follows:
1) obtain the shared time slot pond total capacity A of network participation group and the time slot of correspondence, and the time slot of mark correspondence is idle condition;
2) webmaster node receives the slot requirements application of datalink network user, and inquiry free timeslot block situation, if there are enough free timeslots, enters step 6); If no, enter step 3);
3) the shared time slot pond aggregate demand F=F of current all datalink network users is calculated
1+ F
2+ ...+F
n, F
1, F
2f
nfor the number of timeslots of each datalink network user certain network participation group required within the reallocation cycle;
4) descending factors sharing time slot pond is calculated
5) participate in the time interval resource of the datalink network user sharing time slot pond by descending factors adjustment after, then be the timeslot number that the new datalink network user applied for distributes actual allocated; During distribution, according to the responsibility of the network user, determine that priority is network management user, trunk subscriber or general networking user, the time interval resource of the high user of priority needed for it preferentially ensures; Have the user of same priority, take the user that time interval resource ratio is little, the time interval resource demand priority needed for it ensures;
6) the datalink network user for filing an application distributes idle time slot, and to mark this time slot be seizure condition;
E () network user according to the time slot block parameter after distribution, extracts corresponding time slot block and launches message for terminal after receiving the time slot reallocation message of webmaster node reverts back;
F the parameter of this time slot block, when the time slot block of network user's additional allocation is in idle condition, is sent to webmaster node by time slot reallocation message by (); This time slot block is labeled as idle condition by webmaster node.
The invention has the beneficial effects as follows: be that network in need participates in setting up several shared time slot ponds vertical in the datalink network planning and designing stage, in datalink network running, every user by oneself to the additional demand of time slot periodically informing network management node, according to the whole network slot requirements, management node determines that the reality of every user can quantity allotted, from shared time slot pond, then take out time slot allocation to the corresponding network user.When user is not when needing the time slot block of additional allocation, just discharges this time slot block and returning to shared time slot pond by management node.Can realize like this sharing time interval resource between all datalink network users and different pieces of information chain business, limited datalink network resource is fully utilized.
Accompanying drawing explanation
Fig. 1 is time slot of the present invention reallocation workflow schematic diagram;
Fig. 2 is that handling process schematic diagram is set up in shared time slot pond of the present invention;
Fig. 3 is slot requirements analyzing and processing schematic flow sheet of the present invention;
Fig. 4 is time slot application handling process schematic diagram of the present invention;
Fig. 5 is distributing slot resources handling process schematic diagram of the present invention;
Fig. 6 is Time Slot Occupancy handling process schematic diagram of the present invention;
Fig. 7 is time slot of the present invention release handling process schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described, the present invention includes but be not limited only to following embodiment.
Design procedure based on the Data-Link resource dynamic distributing method in shared time slot pond is as follows:
A (), in the datalink network design planning stage, according to the time slot additional demand estimated and user capacity, unappropriated time slot sets shares time slot pond for each network participates in setting up standing.
B (), in datalink network running, the network user, according to the real-time change of own service amount, estimates extra slots quantity required in next reallocation cycle.
C (), when the traffic carrying capacity of network user's reality has exceeded the traffic peak that time slot shared by it can launch, this user, to webmaster node sending time slots reallocation message, applies for extra time interval resource.
D () webmaster node receives the time slot application of the network user after, from shared time slot pond, select suitable free timeslot block, distribute to this user by time slot reallocation message.
E () network user according to the time slot block parameter after distribution, extracts corresponding time slot block and launches message for terminal after receiving the time slot reallocation message of webmaster node reverts back.
F the parameter of this time slot block, when the time slot block of network user's additional allocation is in idle condition, is sent to webmaster node by time slot reallocation message by ().This time slot block is labeled as idle condition by webmaster node.
With reference to Fig. 1, describe the whole operating process of the resource dynamic distributing method based on shared time slot pond, time slot reallocation adopts centralized dynamic conditioning treatment mechanism, the datalink network user that time slot pond is shared in each participation shares time slot pond according to the rule access of regulation automatically, and according to the demand of user to nms application, receive the time slot allocation of webmaster and extract from reallocation time slot pond the time slot taken needed for this user.
With reference to Fig. 2, describe the process of establishing in datalink network design phase reallocation time slot pond.The design principle sharing time slot pond is as follows:
1. each reallocation time slot pond can only be relevant with a network participation group;
2. each reallocation time slot pond can only send and send with the message of this reallocation time slot pond network of relation participation group;
3. single network participation group can use multiple reallocation time slot pond simultaneously;
4. a network design supports at most 8 time slot ponds of reallocating;
5. a reallocation time slot pond can be made up of multiple time slot block.
Reallocation time slot pond parameter mainly comprises:
1. reallocation time slot pond number;
2. time slot block number;
3. time slot block parameter 1 ~ N, the parameter that wherein must comprise has: network participates in set type, network No., segment number, start timeslot number, repetition rate.
The reallocation time slot pond parameter designed is included in netinit data file, with being loaded into during netinit in each network user.From initialization data file, read the parameter in corresponding shared time slot pond after the network user starts working and store, for the reallocation of follow-up time slot is prepared.
With reference to Fig. 3, describe the process of network user's time interval resource demand analysis.In real work, the traffic carrying capacity of datalink network user is in real-time change, therefore the time interval resource needed also, in constantly changing, therefore needs to calculate this user actual traffic carrying capacity that need send within the reallocation cycle in real time, thus the number of timeslots needed for calculating.The time interval resource demand of the network user determines by the following aspects factor:
1. traffic carrying capacity
Represent the quantity of certain class business of reporting period.Required timeslot number increases along with traffic carrying capacity and increases.
2. service message amount
Service message amount represents that a business will send the number of message.Service message amount also can affect required number of timeslots.
3. message capacity, i.e. time slot packet format restriction
Message capacity represents that a time slot can the quantity of maximum transmission message, and it is by the impact of time slot packet format.
In addition, generally reallocate with time slot the reporting period due to business not identical in cycle, needs the number of timeslots be transformed into by the number of timeslots needed for reporting period needed for the time slot reallocation cycle.
According to influencing factor and the normalized of slot requirements, show that the computing formula that slot requirements is analyzed is as follows:
S represents reallocation cycle (T
z) interior required number of timeslots;
C represents the traffic carrying capacity in T reporting period;
I represents business information capacity, and business will send the number of message exactly, unit: message/business;
M represents the message capacity of time slot, namely wraps restriction, unit: message/time slot;
T represents the reporting period that business produces, unit: second;
T
zrepresent the reallocation cycle, unit: second.
With reference to Fig. 4, describe the process that the network user applies for extra slots resource.When the traffic carrying capacity of datalink network user reality has exceeded the traffic peak that time slot shared by this member can launch, carry out time slot application with regard to needs to webmaster node, ensured the demand of the transmission resources that the data service of this user increases.Time slot application adopts time slot reallocation message, and the parameter that mainly comprises of time slot reallocation message is as follows: reallocation pond number and slot requirements.Wherein slot requirements is the percentage of asking the timeslot number distributed in the next one reallocation cycle to account for reallocation pond time slot.If the timeslot number in reallocation pond is P, the time slot percentage in request reallocation pond is F%, and so, the timeslot number of request is for being not more than the smallest positive integral of P × F%.
With reference to Fig. 5, describe the processing procedure of webmaster node to the application of reallocation time interval resource.Webmaster, according to the time slot application of datalink network user, selects suitable free timeslot block from shared time slot pond.When the time interval resource participating in all datalink network users sharing time slot pond exceedes shared time slot pond total number of timeslots, when can not be the datalink network user resource allocation of new application, webmaster calculates the descending factors τ in shared time slot pond, participate in the time interval resource of the datalink network user in reallocation pond by descending factors adjustment after, then it is the timeslot number (timeslot number by after decline Factor Reduction) that the new datalink network user applied for distributes actual allocated.
Time slot reallocation is that the time interval resource of the network user carries out dynamic adaptation, and time slot redistribution model fundamental is as follows:
1. share time slot pond total capacity
Share time slot pond total capacity in the system network design stage, devise the total number of timeslots amount in reallocation cycle according to the slot requirements estimated.
2. share time slot pond aggregate demand
The slot requirements total quantity of each datalink network user in real-time statistics reallocation cycle when sharing time slot pond aggregate demand.This aggregate demand is dynamic change.
3. priority policy
The following priority management strategy of main employing carries out time slot allocation:
(1) according to the responsibility of the network user, can determine the priority of this user, the time interval resource of the high user of priority needed for it preferentially ensures.
Priority order is from high to low: network management user, trunk subscriber, general networking user.
(2) have the user of same priority, take the user that time interval resource ratio is little, the time interval resource demand priority needed for it ensures.
4. descending factors
When shared time slot pond aggregate demand exceedes shared time slot pond total capacity, then the timeslot number distributed each datalink network user is according to a proportional minimizing of common factor, and this common factor is defined as descending factors.
Share the computing formula of time slot pond aggregate demand:
F＝Σ(F
1+F
2+...+F
n)
F
1, F
2, F
nfor the number of timeslots of each datalink network user certain network participation group required within the reallocation cycle.
Descending factors computing formula is as follows:
τ represents descending factors;
F represents the aggregate demand of all datalink network users participating in this shared time slot pond;
A represents the total capacity of this shared time slot pond design.
Algorithm steps is as follows:
1. obtain the shared time slot pond total capacity A of network participation group and the time slot of correspondence, and the time slot of mark correspondence is idle condition;
2. receive the slot requirements application of datalink network user, inquiry free timeslot block situation, if there are enough free timeslots, then turns 6); If no, show that the time slot in shared time slot pond is not enough;
3. calculate the shared time slot pond aggregate demand F of current all datalink network users;
4. calculate descending factors τ;
5. adjust the time slot (consideration priority policy) of distribute data chain network user, release portion time slot;
6. the datalink network user for filing an application distributes idle time slot, and to mark this time slot be seizure condition.
With reference to Fig. 6, describe the process that the network user takies the time interval resource applied for.After completing time slot allocation, the network user, according to the time slot block parameter after distribution, extracts corresponding time slot block and launches message for terminal.Time slot block parameter mainly comprises: network participates in set type, network No., segment number, start timeslot number and repetition rate.
With reference to Fig. 7, describe the process that the network user discharges the time interval resource applied for.Reduce due to actual volume in each reallocation cycle, the time slot block distributed there occurs idle condition, needs the time slot block to taking to carry out releasing operation.The network user produces time slot release control parameter according to actual conditions, according to the time slot block parameter controlled, extracts corresponding time slot block and forbids that equipment launches message.Simultaneously by release time slot block reporting parameters to administrative center's webmaster, this time slot block is labeled as idle condition by webmaster, and the time slot block after release can be used for the slot requirements of other datalink network user.
The foregoing is only instantiation of the present invention, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this; if these amendments of the present invention and modification belong within the technical scheme of the claims in the present invention record and the scope of equivalent technologies thereof; then the present invention is also intended to comprise these change and modification, and these amendments based on inventive concept and change are still within claims of the present invention.
Claims (1)
1., based on the Data-Link resource dynamic distributing method in shared time slot pond, it is characterized in that comprising the steps:
A (), in the datalink network design planning stage, according to the time slot additional demand estimated and user capacity, unappropriated time slot sets shares time slot pond for each network participates in setting up standing; The design principle sharing time slot pond comprises:
(1) each reallocation time slot pond can only be relevant with a network participation group;
(2) each reallocation time slot pond can only send and send with the message of this reallocation time slot pond network of relation participation group;
(3) single network participation group can use multiple reallocation time slot pond simultaneously;
(4) network designs support at most 8 time slot ponds of reallocating;
(5) reallocation time slot ponds can be made up of multiple time slot block;
B (), in datalink network running, the network user, according to the real-time change of own service amount, estimates extra slots quantity required in next reallocation cycle
wherein, C represents the traffic carrying capacity in T reporting period; I represents business information capacity, and namely business will send the number of message; M represents the message capacity of time slot, namely wraps restriction; T represents the reporting period that business produces; T
zrepresent the reallocation cycle;
C (), when the traffic carrying capacity of network user's reality has exceeded the traffic peak that time slot shared by it can launch, this user, to webmaster node sending time slots reallocation message, applies for extra time interval resource; Time slot reallocation message comprises reallocation pond number and slot requirements, and wherein slot requirements is the percentage of asking the timeslot number distributed in the next one reallocation cycle to account for reallocation pond timeslot number;
D () webmaster node receives the time slot application of the network user after, from shared time slot pond, select free timeslot block, step is as follows:
1) obtain the shared time slot pond total capacity A of network participation group and the time slot of correspondence, and the time slot of mark correspondence is idle condition;
2) webmaster node receives the slot requirements application of datalink network user, and inquiry free timeslot block situation, if there are enough free timeslots, enters step 6); If no, enter step 3);
3) the shared time slot pond aggregate demand F=F of current all datalink network users is calculated
1+ F
2+ ...+F
n, F
1, F
2f
nfor the number of timeslots of each datalink network user certain network participation group required within the reallocation cycle;
4) descending factors sharing time slot pond is calculated
5) participate in the time interval resource of the datalink network user sharing time slot pond by descending factors adjustment after, then be the timeslot number that the new datalink network user applied for distributes actual allocated; During distribution, according to the responsibility of the network user, determine that priority is network management user, trunk subscriber or general networking user, the time interval resource of the high user of priority needed for it preferentially ensures; Have the user of same priority, take the user that time interval resource ratio is little, the time interval resource demand priority needed for it ensures;
6) the datalink network user for filing an application distributes idle time slot, and to mark this time slot be seizure condition;
E () network user according to the time slot block parameter after distribution, extracts corresponding time slot block and launches message for terminal after receiving the time slot reallocation message of webmaster node reverts back;
F the parameter of this time slot block, when the time slot block of network user's additional allocation is in idle condition, is sent to webmaster node by time slot reallocation message by (); This time slot block is labeled as idle condition by webmaster node.
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Application publication date: 20150429 |