Multi-service Access Research Articles

Approximate Method for Estimating Characteristics of Joint Service of Real-Time Traffic and Elastic Data Traffic in Multiservice Access Nodes

Approximate Method for Estimating Characteristics of Joint Service of Real-Time Traffic and Elastic Data Traffic in Multiservice Access Nodes

Multi-service access selection algorithm in 5G heterogeneous network

As advancements occur in new wireless communication technology, varieties of network forms coexist and integrate, gradually forming a heterogeneous wireless network environment covered by various wireless networks simultaneously. Owing to disparities in wireless access technologies, network selection needs to consider various factors. Therefore, this paper proposes an access selection scheme using Multi-Attribute Decision-Making (MADM). Considering the diversity of user services, each attribute’s subjective and objective weight is respectively calculated by Analytic Hierarchy Process (AHP) and Standard Deviation (SD) for network service quality, user preference, and available load. Combined with utility functions, the synthetic assessments of evaluated networks are obtained. The results of the simulation indicate that the algorithm combines user preference and service characteristics to effectively select the appropriate access network. At the same time, load balancing is realized to some extent.

IEEE 802.11ax Meet Edge Computing: AP Seamless Handover for Multi-Service Communications in Industrial WLAN

IEEE 802.11ax, as a new generation of wireless local area network (WLAN) standard, has great development potential for multi-service access in industrial WLAN with its characteristics of low-cost, quick-deployment and high-efficiency. However, it still faces the problem of quick and efficient access point (AP) seamless handover for multi-service communications due to terminal mobility and channel degradation. To solve the problem, combining the characteristics of orthogonal frequency division multiple access (OFDMA) technology and multi-user multiple-input multiple-output (MU-MIMO) technology, this paper firstly proposes an edge computing based IEEE 802.11ax multi-service bearer mechanism by dynamically allocating channel resource units (RUs). Secondly, a multi-service AP seamless handover mechanism based on edge computing is proposed, which consists of a channel scanning delay optimization method based on virtual AP sentinel, a handover trigger judgment algorithm considering mobility and RU reallocation, a multi-objective optimized AP handover model considering load balancing, transmission rate optimization and handover cost minimization with service attributes. Finally, we propose a multi-service AP seamless handover algorithm based on improved particle swarm optimization (PSO) to get optimized handover making-decision. Simulation results show that the proposed handover mechanism can reduce the handover delay significantly while realizing seamless handover accurately in multi-service industrial WLAN.

Adaptive Access Selection Algorithm for Multi-Service in 5G Heterogeneous Internet of Things

5G heterogeneous network system incorporates multiple radio access technologies (RATs), which enables the massive connection of Internet of things (IoT) devices and popularity of diverse IoT services. However, with the tremendous growth of IoT connections, personalization of service requirements and deepening of network heterogeneity, how to adaptively optimize the quality of experience (QoE) of IoT users in any motion state while balancing network load is still a major challenge in 5G system. Therefore, this paper proposes an innovative access selection mechanism named REMNS that allows users requesting IoT services to obtain optimal QoE in 5G heterogeneous networks. In particular, a network pre-assessment mechanism based on fuzzy logic is exploited to filter available networks by user devices. Furthermore, REMNS devises a comprehensive preference evaluation framework based on the subjective-oriented Analytic Hierarchy Process (AHP) and objective-oriented Entropy Weight Method (EWM) to measure the preference degrees of each IoT service for network attributes. Subsequently, we put forward a relative entropy based multi-service access selection algorithm to make servers rapidly sort optimal network from the filtered available networks, so as to enhance QoE for users under the constraint of limited network capacities. The evaluation results demonstrate that the REMNS can effectively maintain stable service connections and significantly improve user QoE.

МЕТОД РОЗРАХУНКУ ПРОПУСКНОЇ ЗДАТНОСТІ ПАКЕТНОЇ МЕРЕЖІ ДОСТУПУ ДЛЯ ПРИСТРОЇВ IoT

When creating packet networks of a new generation, the problem of calculating the throughput of broadband multiservice access networks arises. In practice, for this they use mathematical modeling, or without proper justification, the traditional formulas of the theory of information distribution. The well-known analytical solution for ATM technology is extremely cumbersome and practically not used. Today, there is not generally accepted analytical or engineering method for solving the problem. At the same time, telecommunication networks must develop to provide all the necessary conditions for the practical application of the concept of the Internet of Things (IoT). One of these conditions is the maintenance of multiservice traffic with specified quality of service indicators. The paper developed a method for calculating the bandwidth or the number of conditional channels of a packet access network for IoT devices. In this case, the calculation of the bandwidth of the access network of IoT devices is performed at the level of calls and packets separately. At the level of calls from IoT devices, the Engset model is used for traffic due to the small number of groups of the devices themselves, and at the packet level, the model of self-similar flow is applied. Calculation of quality of service characteristics in a packet communication network is reduced to determining the Hurst coefficient of self-similarity of traffic, after which the average number of packets in the system is calculated using the well-known Norros formula. Other characteristics, such as the average number of packets in the queue, the average residence time of packets in the system and the average delay time of packets in a single-channel system, are calculated based on their functional relationship with the previously calculated average number of packets in the system. Based on the approximation of the distribution function of the system states, the probability of waiting for packet servicing and the average delay time of packets in the packet switch queue are calculated.

Methods for Estimating the Required Volume of Resource for Multiservice Access Nodes

We construct and study a mathematical model for the distribution of information transmission resource in a multiservice access node. The model considers an arbitrary number of multimedia traffic streams, which differ in the intensity of claims arrival, the amount of resource used to service one claim, and the resource occupation time. The time intervals between the arrival of claims have an exponential distribution with a parameter depending on the number of claims being serviced in the considered flow. We construct a recursive algorithm for evaluating the characteristics. Relations are established between the integral and flow characteristics of the quality of service for the claims. We construct an efficient algorithm for estimating the amount of resource required to service given traffic flows with required quality. The efficiency of the computational procedure is achieved as a result of organizing recursion over the volume of resource and the use of normalized values of state probabilities. We consider a solution to the problem of estimating the required amount of resource for a multiservice node model, which allows to use resource reservation and dynamic distribution mechanisms when servicing elastic traffic. We show numerical examples that illustrate the features of the implementation of the constructed computational procedures.

Использование многоуровневых вычислительных систем для обработки одноранговых пользовательских запросов в мобильных сетях

The evolution of the Internet of Things application dictates new, more stringent requirements for the speed of transmission and processing of information. To reduce latency, peripheral multi-service access computing is gaining in popularity. This approach allows users to process data closer to their location. However, such solutions may not take into account the specifics of applications based on peer-to-peer user requests (P2P). Subject of study. The article explores the processing time of P2P requests in mobile networks. Method. The applied methodology includes methods of mathematical and simulation modeling. The main results. The results of the work allow us to conclude that the peripheral computing of multiservice access in their standard architectural design is insufficient. At the same time, the developed solution based on a multilevel architecture with multicast routing provides significantly lower query processing time. Practical significance. The solution proposed by the authors is able to ensure the operability of applications requiring minimal network latency, such as medical applications, unmanned vehicles, search for various service providers with reference to geographical coordinates.

Traffic Prediction Method for GEO Satellites Combining ARIMA Model and Grey Model

An accurate traffic prediction on various service is of great importance to the channel resource management of geostationary earth orbit (GEO) satellites. Therefore, a traffic prediction method for GEO satellites combining autoregressive integrated moving average (ARIMA) model and grey model is proposed. First, the traffic prediction methods based on ARIMA model and grey model are introduced respectively. Second, a combined model is given, in which according to the results of the historical prediction of ARIMA model and grey model, those two models are combined with different weights. Third, the combined model is applied to a multi-service access and the access probability of each kind of service is calculated based on the prediction results. Finally, the simulation experiments indicate that the combined model has better prediction stability and higher average prediction accuracy than either of the separated models. Moreover, the proposed access strategy based on the combined model performs better than other similar strategies.

An integrated hardware/software in Algeria Telecom access layers NGN model:MA5600T and C300M Shelfs MSAN’s solutions

The evolution of an existing network to the new structure will require a phased migration strategy aimed at minimising capital expenditure during the transition phase, while reaping the benefits early on. Any action taken during this transition step should simplify the network's evolution to the NGN packet-switched architecture. This work conducted the study of the migration of PSTN networks to NGN Optical Fiber networks, its configuration and implementation of Smart AX MA5600T HUAWEI and C300M ZTE Shelfs MSANs solutions. Full Text: PDF ReferencesAtzwanger. Joachim, Multi-Service Access Node: Soft switches ITSF ROM, Telekom Austria (2009). DirectLink B. Handley, Multi-Service Access Nodes (MSANs): Gateways to Next-Generation Network (NGN), Fujitsu scientific & technical journal 42, 4, 432-438 (Oct 2006). DirectLink D. C. Eddine, Presentation MSAN type ZTE (MSG 5200 & C300M). DirectLink DSM-2128 IP DSLAM and MSAN (Multi Service Access Node), Smart solutions for smart networks (Sept 2018). DirectLink Huawei, MSAN MA5600T Basic Configuration, Issue 1-00 (2010). DirectLink Huawei, SmartAX MA5600T/MA5603T/MA5608T Multiservice Access Module: Commissioning and Configuration Guide V800R015C10, Issue 01 (2014-10-30). DirectLink Loïc. Debourdeau, Le Protocole SIP (Session Initiation Protocol), RFC2543. DirectLink Sennouni. Hassane, Implementation de la solution Dual Homing pour la diversification des liens Uplinks du MSAN MA5600T au sein du reseaux metro Ip d'IAM, Ecole Nationale des Sciences Appliquées- Tanger (2014). DirectLink ZTE, ZXA10 C300M, Configuration Manual (CLI) (2012-10-20). DirectLink

异构无线网络多用户多业务接入中多目标优化控制方法研究

异构无线网络多用户多业务接入中多目标优化控制方法研究

Методика расчета параметров линии доступа мультисервисной сет и

The problem of estimating rate plan settings on multiservice access networks is stated. Given the triple-play nature of broadband services we formulate the interconnection between the standard service set and available access port settings – output packet buffer capacity and bandwith. We discuss usual Internet Service Provider access network from the last uplink to the end-user customer equipment access port. As an industry standard we choose IP-Television, internet data transfer and streaming video as primary services. Baseline protocols of these services are stated along with respective quality of service requirements. IP-TV service is modeled according to DVB-IPTV standard with H.264 encoding using MPEG-TS multiplexing streams over RTP and UDP protocols with IP-multicast distribution. Using experimental data we show high burstiness of H.264 traffic patterns and take care of it cduring calculation of required bandwith parameters. Data transfer service represented by popular TCP-based internet applications. We are giving attention to TCP flow control algorithms and to Application level flow control. From experimental data and industry adopted baselines of internet applications we estimate quality of service parameters as a function of customer connection settings. Unlike usual ISP approximations of core links capacity, out method allows to estimate access port settings as a function of rate plan for required service set and quality of service.

A Multiservice Access Solution based on S-OrBAC Model, Contactless Smartcard and NFC Technologies

A Multiservice Access Solution based on S-OrBAC Model, Contactless Smartcard and NFC Technologies

Research on Electric Power Multiservice Access Support SDN Technology

Electric power communication network is the information channel to guarantee the normal operation of power grid. With the rapid development of smart grid, the electric power business types are continuously increased, which produce a large number of electric network access mode and make it difficult to centralized management. In this paper, the method of using SDN technology to centralized and unified management the electric power distribution communication network is analyzed firstly. The scheme of multiservice unified access intelligent electric device which supports SDN technology is proposed. The principle of multiservice access electric device is analyzed in detail. Secondly, the development and application of multiservice access electric device in Energy Internet is analyzed.

Keymile uses IRD fuel cell in mission-critical telecom networks

Keymile, a leading supplier of telecom solutions in Germany and Switzerland, is now offering a direct methanol fuel cell from Denmark-based IRD Fuel Cell in its XMC20 hybrid multi-service access and transmission platform. This provides an uninterrupted power supply for mission-critical communications networks for long time periods, significantly boosting reliability and availability.

Multi-service radio-over-fiber system with multiple base-station groups enabled by scalable generation of multi-frequency MMWs

In this paper, we propose and verify a novel hierarchical radio-over-fiber (RoF) system with multiple base-station groups (BSGs). The proposed RoF system has a two-stage structure to provide the access of multiple services for each BS in BSGs, utilizing the scalable generation of multi-frequency millimeter-waves (MMWs). By using the four-wave mixing (FWM) effect in a semiconductor optical amplifier (SOA), multi-frequency MMWs can be generated with the scalability. The obtained results successfully verify the feasibility of our proposed multi-service access RoF system with BSGs.

基于OFDM-PON的媒质接入控制协议设计

A novel media access control protocol is proposed based on EPON considering of the character of orthogonal frequency-division multiplexing passive optical network.Multi-point control protocol,control message format and the priority of services are designed and a dynamic bandwidth allocation algorithms is proposed,which supports multi-service access and ensures quality of service distinguishing user level in specified case.The proposed algorithm uses two-level mechanisms and the allocating progress can be divided into two steps-schedule for different priority of services and schedule for different level optical network unit.The proposed protocol is simulated and the results of delay,packet loss ratio and throughput performance show that the proposed protocol guarantees the quality of service requirements for different services excellently,and meets quality of service requirements of multi-service access.

Problems of building a multiservice distribution network access to the mobile terminal of a subscriber moving with high speed

A multilevel problem arising in the construction of a multiservice access network to a subscriber’s mobile terminals moving at high speed is considered in this paper. Objective is to examine possible solutions of the problem at each access network level. The article discusses the network architecture, the methods of the information signal forming and technologies of the subscriber’s mobile terminals implementation are described. The proposed solutions enable to multiplex set of broadband services into one stream and receive the several GHz bandwidth signal with further transformation to select the desired service

Enhanced Clustering Techniques for Hyper Network Planning using Minimum Spanning Trees and Ant-Colony Algorithm

Problem statement: The process of network planning is divided into two sub steps. The first step is determining the location of the Multi Service Access Node (MSAN). The second step is the construction of subscriber network lines from MSAN to subscribers to satisfy optimization criteria and design constraints. Due to the complexity of this process artificial intelligence and clustering techniques have been successfully deployed to solve many problems. The problems of the locations of MSAN, the cabling layout and the computation of optimum cable network layouts have been addressed in this study. The proposed algorithm, Clustering density-Based Spatial of Applications with Noise original, minimal Spanning tree and modified Ant-Colony-Based algorithm (CBSCAN-SPANT), used two clustering algorithms which are density-based and agglomerative clustering algorithm using distances which are shortest paths distance and satisfying the network constraints. This algorithm used wire and wireless technology to serve the subscribers demand and place the switches in a real optimal place. Approach: The density-based Spatial Clustering of Applications with Noise original (DBSCAN) algorithm has been modified and a new algorithm (NetPlan algorithm) has been proposed by the author in a recent work to solve the first step in the problem of network planning. In the present study, the NetPlan algorithm is modified by introduce the modified Ant-Colony-Based algorithm to find the optimal path between any node and the corresponding MSAN node in the first step of network planning process to determine nodes belonging to each cluster. The second step, in the process of network planning, is also introduced in the present study. For each cluster, the optimal cabling layout from each MSAN to the subscriber premises is determining by introduce the Prime algorithm which construct minimal spanning tree. Results: Experimental results and analysis indicate that the CBSCAN-SP-ANT algorithm was effective, leads to minimum costs for network construction and make the best grade of service. Conclusion: Using mobile network to serve the area with low density is decreasing the cost of design the fixed wire network. Also, using the modified ANT algorithm and minimum spanning tree, are helping to construct the cable layout from each MSAN to subscribers when the network is complicated and the number of intersections and streets are large.

Statistical Multiplexing of Upstream Transmissions in DOCSIS Cable Networks

The appearance of increased-bandwidth applications with quality-of-service (QoS) requirements has brought about the emergence of multi-service access networks. Data Over Cable Service Interface Specification (DOCSIS) networks are intended to support high quality audio, video, and interactive services over Internet protocol (IP) flows within a Hybrid Fiber/Coax (HFC) network context. In order to support large amount of users and demanded QoS for such applications, a careful management of resources is needed. In this paper we propose a centralized bandwidth allocation scheme for the return path of DOCSIS networks. The proposed scheme takes advantage of the application's traffic characteristics to minimize the bandwidth dedicated to control signals and achieve high bandwidth utilization. At the same time, the proposed approach complies with the QoS requirements of the serviced applications. The performance of our bandwidth allocation approach was evaluated using computer simulation. The performance metrics used are the average packet delay, data throughput, and number of users supported. Results are obtained for networks with a single service as well as for a mixed service scenario. As shown by the results, our approach achieves high bandwidth utilization, and still complies with the delay constraints imposed by the user applications. It increases the system capacity as compared to reference approaches.

Broadband Convergence of 40 GHz-ROF and 10-Gb/s WDM-PON Systems in the Duplex Access Network

A broadly converged 40G-ROF and 10-Gb/s WDM-PON multi-service access system is proposed and experimentally demonstrated. This scheme consists of an integrated system of 40G-ROF and 10-Gb/s WDM-PON simultaneously transmitting independent 2.5-Gb/s wireless and 10-Gb/s wire signal. At the base station, it employs a remodulation scheme, which is achieved by remodulating the upstream OOK signal on the DPSK downstream signal, to reduce the cost of the base station. The transmission experiment is carried out over a 25-km-long single mode fiber (SMF-28). The results show that the sensitivities of downstream PON and ROF signal are −14.5 dBm and −21.5 dBm, respectively, and the sensitivity of upstream signal is −25.3 dBm.