CN-122001829-A - Communication resource dynamic allocation method and system under multi-service concurrency condition

CN122001829ACN 122001829 ACN122001829 ACN 122001829ACN-122001829-A

Abstract

The application discloses a communication resource dynamic allocation method and a communication resource dynamic allocation system under a multi-service concurrency condition, which relate to the technical field of resource allocation, and are characterized in that an optical fiber link digital twin static base line is established based on optical fiber link basic data, ‌ synthesizes optical fiber link real-time environment data and service load data on the optical fiber link digital twin static base line, analyzes an optical fiber link real-time network state, combines the service demand data and the real-time network state, screens to obtain all physical feasible paths and carries out formatted output, obtains all the feasible paths through parallel multidimensional conflict detection on all the physical feasible paths, calculates the use cost index of all the feasible paths, ‌ selects a final path based on the use cost index of all the feasible paths, carries out service issuing execution and state synchronization on the final path, and combines distributed optical fiber sensing data and service load data, analyzes the influence of environment change and inherent damage on the link state, ensures that the selected path accords with service demands, and optimizes network resources.

Inventors

WANG GUOJUN
WANG XIAODI
ZHENG YIFAN

Assignees

陕西中交信通网络科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260410

Claims (10)

1. The method for dynamically allocating communication resources under the multi-service concurrency condition is characterized by comprising the following steps: s1, acquiring and processing optical fiber link basic data, and establishing an optical fiber link digital twin static baseline based on the optical fiber link basic data, ‌ S2, synthesizing real-time environment data and service load data of the optical fiber link on the digital twin static base line of the optical fiber link, and analyzing the real-time network state of the optical fiber link; s3, combining the service demand data with the real-time network state, screening to obtain each physical feasible path and carrying out formatting output; S4, obtaining each feasible path through parallel multidimensional conflict detection on each physical feasible path, and calculating the using cost index of each feasible path, ‌ S5, selecting a final path based on the cost indexes of the feasible paths, and performing service issuing execution and state synchronization on the final path.
2. A dynamic allocation method of communication resources under the multi-service concurrency condition as set forth in claim 1, characterized in that the specific steps of S1 are that an OTDR device is accessed at one end of an optical fiber link, pulse width, measurement distance and average time are set to ensure enough dynamic range and space resolution, test pulses are emitted and backscattering and Fresnel reflection signals are collected, an OTDR track curve is analyzed, all event points are automatically identified and marked, event positions, event losses and reflection coefficients are calculated and recorded for each event point to form an event point structured table, the intrinsic loss coefficients and microbending loss coefficients of each continuous optical fiber segment are calculated according to the backscattering level slope of the continuous segment in the OTDR track, a spectrum analyzer is used for scanning all wave bands at a receiving end, the center wavelength, peak power and optical signal to noise ratio of each channel are recorded to obtain channel power measurement data, the event point structured data, the continuous segment loss parameters and the channel power measurement data are stored in a database, and a time stamp is marked as an optical fiber link twinning static base line.
3. The method for dynamically allocating communication resources under a multi-service concurrency condition as set forth in claim 2, wherein said S2 comprises the specific steps of: s21, acquiring real-time environment data and business load data of an optical fiber link from a sensing data stream and a network controller, and comprehensively analyzing the power loss of each event point by combining a digital twin static baseline; s22, predicting comprehensive additional influence of signal transmission and external interference on the optical fiber according to the power loss of each event point and the structural parameters of the transmission path; s23, constructing a link state prediction model, summarizing the data into a unified input set, sending the unified input set into the link state prediction model, and outputting the current link real-time network state.
4. A dynamic communication resource allocation method under a multi-service concurrency condition as set forth in claim 3, wherein the specific steps of S21 are that real-time environment data, namely temperature change values and compression deformation values of all points along an optical fiber, are obtained from a distributed optical fiber sensor sensing data stream deployed in an optical fiber link, average polarization state change rates and polarization mode dispersion values of the optical fiber link are analyzed in real time through a digital signal processing module of a coherent receiver, real-time received optical power of all channels is obtained from an optical power meter, a wavelength channel list of all optical fiber links is obtained from a network controller, service load data are counted and aggregated, spatial alignment and fusion are carried out on the real-time environment data and a digital twin static baseline of the optical fiber link, and power loss of all event points due to common environmental factors and inherent damage of an optical fiber exposure light path is comprehensively analyzed.
5. A dynamic allocation method of communication resources under multi-service concurrency condition as set forth in claim 4, wherein the specific steps of S22 are that the power loss of each event point on the transmission path is defined as a discrete event point set and a continuous segment set, each discrete event comprises a position and a loss value, each continuous segment comprises a length and an average loss coefficient, the average loss coefficient is obtained by integrating and averaging the power loss of each event point along the segment, two indexes of a damage accumulation factor and a non-uniformity factor are calculated, for an external temperature abnormal interference source, an exponential distance attenuation function is constructed by taking an absolute value of temperature deviation as interference intensity, then all interference sources are integrated along an optical fiber to obtain the total action amount of external temperature abnormal interference, and the comprehensive additional influence of signal transmission and external interference on the optical fiber is calculated by integrating the damage accumulation factor, the non-uniformity factor and the total action amount of external temperature abnormal interference through a global conversion coefficient, an interference weight coefficient and a reference length.
6. The method for dynamically allocating communication resources under the multi-service concurrency condition as set forth in claim 5, wherein the specific steps of S23 are that a link state prediction model is constructed, the intrinsic loss coefficient of a digital twin static baseline of an optical fiber link, the fixed loss of each event point, real-time service load data, the real-time received light power of each channel, the power loss of each point, the comprehensive additional influence of signal transmission and external interference on the optical fiber, the polarization state change rate and the polarization mode dispersion value are summarized into a unified input set after normalization and feature engineering processing, the input set is sent into the link state prediction model, and the current link state dynamic index is output after model reasoning, wherein the current link state dynamic index comprises the available bandwidth, the maximum safe fiber-in power and the equivalent signal to noise ratio.
7. A method for dynamically distributing communication resources under multi-service concurrency condition as set forth in claim 6, characterized in that the step S3 includes receiving service order information, analyzing the structured parameters of the service order information, including bandwidth requirement, delay upper limit, protection level, necessary link node, avoidance of link node and priority, extracting real-time states of all links, including residual bandwidth, equivalent signal-to-noise ratio and current load, from optical fiber link state database, extracting node states, including available port number of node, regenerator and current CPU load, executing multi-constraint route calculation according to the structured parameters of the service order information, real-time states of all links and node states, deleting link nodes which do not meet requirements, reducing calculation range, using constraint shortest path priority algorithm, searching the shortest path which meets the residual bandwidth and equivalent signal-to-noise ratio and is greater than or equal to the service requirement threshold, continuing searching sub-optimal path and third optimal path by using the deviated path algorithm until more optimal path is found, and obtaining physical constraint route sequences by aggregating physical constraint routes and outputting the constraint routes to obtain each physical constraint route.
8. A dynamic allocation method of communication resources under multi-service concurrency condition as set forth in claim 7, wherein the specific steps of S4 are that the specific process of obtaining each feasible path through parallel multi-dimensional conflict detection of each physical feasible path comprises resource conflict detection, load balancing detection and physical topology constraint detection, the resource conflict detection comprises the steps of checking whether spectrum, wavelength and time slot resources of all links on each physical feasible path are occupied, when a service requests a specific resource block, confirming whether the resource block is unoccupied on the whole path, load balancing detection comprises the steps of detecting whether the load rate of each link and node on each physical feasible path exceeds a preset threshold after the service is established, the physical topology constraint detection comprises the steps of firstly detecting whether the total length of the optical layer exceeds the maximum transmission distance under the condition of no-electricity regeneration, secondly, the regenerator demand detection comprises the step of detecting whether available regenerator nodes are along the way when the path signal to noise ratio is insufficient, the step of marking each physical feasible path through parallel multi-dimensional conflict detection as occupied, the step of calculating the fact that each physical feasible path is required to be occupied, the maximum transmission distance is required by the optical fiber to be calculated, the maximum transmission distance is calculated, the maximum signal to noise ratio is calculated and the maximum transmission loss is calculated from the maximum signal to noise ratio of the maximum transmission loss, and the maximum signal to noise ratio is calculated from the maximum transmission threshold, and the maximum signal to noise ratio is calculated and the maximum signal to be compared with the maximum signal to noise ratio, and the maximum signal to noise ratio is calculated and the maximum signal to be calculated and the maximum signal to the transmission loss ratio and the maximum signal to noise ratio to the maximum signal to the transmission loss to the maximum signal to noise ratio to the transmission constraint, the method comprises the steps of dividing the difference value between a service required threshold and a path minimum equivalent signal-to-noise ratio by the service required threshold, adding the path loss ratio and the signal-to-noise ratio margin ratio to obtain a use cost index, obtaining the use cost index of each feasible path in this way, ascending the use cost index of each feasible path, and outputting each feasible path list after ascending.
9. A dynamic allocation method of communication resources under multi-service concurrency condition as set forth in claim 8, wherein the specific steps of S5 are that each feasible path list after ascending arrangement is obtained, a path with the minimum cost index is selected to be used as a final path, needed frequency spectrum, wavelength and time slot on the final path are marked as reserved states in a database, other concurrency service preemption is prevented, configuration is issued section by section, all nodes of the waiting paths return configuration success response, rollback operation is executed when any node fails, reserved resources are released, next feasible paths are tried according to each feasible path list after ascending arrangement, after service establishment is successful, reserved states are changed from reserved to occupied, and link states are updated.
10. A communication resource dynamic allocation system under the multi-service concurrency condition, which is realized based on the communication resource dynamic allocation method under the multi-service concurrency condition according to any one of claims 1-9, and is characterized by comprising a static base line establishment module, a network state analysis module, a feasible path screening module, a use cost calculation module and a final path selection module, The static base line establishing module is used for collecting and processing the basic data of the optical fiber link, and establishing a digital twin static base line of the optical fiber link based on the basic data of the optical fiber link, ‌ The network state analysis module is used for synthesizing the real-time environment data and the service load data of the optical fiber link on the digital twin static base line of the optical fiber link and analyzing the real-time network state of the optical fiber link; The feasible path screening module is used for screening to obtain all physical feasible paths based on the combination of the service demand data and the real-time network state and formatting and outputting the physical feasible paths; The usage cost calculation module is used for obtaining each feasible path by carrying out parallel multidimensional conflict detection on each physical feasible path, calculating the usage cost index of each feasible path, ‌ The final path selection module is used for selecting a final path based on the cost indexes of the feasible paths, and carrying out service issuing execution and state synchronization on the final path.

Description

Communication resource dynamic allocation method and system under multi-service concurrency condition Technical Field The application belongs to the field of resource allocation, and particularly relates to a method and a system for dynamically allocating communication resources under a multi-service concurrency condition. Background With the rapid development of services such as fifth-generation mobile communication, cloud computing, artificial intelligence, high-definition video and the like, an optical network is used as a backbone bearing network of an information communication infrastructure, the service types of the optical network are increasingly diversified, the bandwidth demand is exponentially increased, and simultaneously, higher requirements are provided for the dynamic scheduling capability of network bandwidth, the agility of service deployment and the certainty of transmission quality; The traditional optical network operation and control mode mainly relies on static planning and manual intervention, namely resource reservation is carried out based on the maximum traffic in the network deployment stage, the link state is periodically monitored through a network management system in the operation stage, and path adjustment is carried out by manual intervention when the traffic demand changes or the link is deteriorated, however, as the network scale is continuously enlarged, the dynamic fluctuation of the link load and the influence of the optical fiber environment factors on the transmission quality are increasingly remarkable, the traditional mode exposes the following technical defects: 1. In the prior art, static event point information of an optical fiber is generally collected only through an optical time domain reflectometer as link basic data, but real-time environment data obtained by distributed optical fiber sensing cannot be deeply fused with a static base line, dynamic contribution of factors such as local temperature abnormality and mechanical deformation to transmission damage of each point of the optical fiber cannot be quantified, so that influence of real physical environment change on signal quality is difficult to reflect in link state evaluation, and fine perceptibility of physical layer state of the optical fiber link is lacking. 2. In a dense wavelength division multiplexing system, nonlinear effects are closely related to business load parameters such as fiber-entering power, wavelength quantity, modulation format and the like, external environment interference can further change refractive index distribution and polarization characteristics of an optical fiber, the refractive index distribution and the polarization characteristics are mutually coupled to affect signal transmission quality, nonlinear cost or environment loss is generally considered independently in the prior art, a unified comprehensive additional influence model cannot be established, and deviation exists in estimation of key dynamic indexes such as equivalent signal-to-noise ratio, maximum safe fiber-entering power and the like. Disclosure of Invention Aiming at the technical defects, the application provides a method and a system for dynamically distributing communication resources under the multi-service concurrency condition. In order to solve the technical problems, the application adopts the following technical scheme that the application provides a method for dynamically allocating communication resources under the multi-service concurrency condition, which comprises the following specific steps: s1, acquiring and processing optical fiber link basic data, and establishing an optical fiber link digital twin static baseline based on the optical fiber link basic data, ‌ S2, synthesizing real-time environment data and service load data of the optical fiber link on the digital twin static base line of the optical fiber link, and analyzing the real-time network state of the optical fiber link; s3, combining the service demand data with the real-time network state, screening to obtain each physical feasible path and carrying out formatting output; S4, obtaining each feasible path through parallel multidimensional conflict detection on each physical feasible path, and calculating the using cost index of each feasible path, ‌ S5, selecting a final path based on the cost indexes of the feasible paths, and performing service issuing execution and state synchronization on the final path. The method comprises the specific steps of accessing OTDR equipment at one end of an optical fiber link, setting pulse width, measuring distance and average time to ensure enough dynamic range and space resolution, transmitting test pulses and collecting back scattering and Fresnel reflection signals, analyzing an OTDR track curve, automatically identifying and marking all event points, calculating and recording event positions, event loss and reflection coefficients for each event point to form an event point structured t