Бидний тухай
Багш ажилтан
The number of subscribers in mobile networks is growing rapidly, which challenges the network management and data delivery. The efficient management and routing are key solutions. An important one of the solutions is the Distributed Mobility Management (DMM) that to handles the mobility of subscribers at the edge of mobile networks and load balancing. Otherwise, mobility anchors are distributed across the network, which can manage the handover procedures. In this paper, we propose a novel mobility anchor selection scheme based on the results of a cost function with three factors, to select a suitable cell and anchor for moving subscribers and improve the handover performances of the network. Our results illustrate that the proposed scheme provides significantly enhanced handover performance.
Мобайл сүлжээний хэрэглэгчийн тоо хурдацтай өсөж байгаа нь хөдөлгөөнт байдлыг үр бүтээмжтэйгээр удирдах болон хэт их өгөгдлийн урсгалыг дамжуулахад хүндрэлтэй болгож байна. Энэхүү асуудлыг шийдэх зорилготой тархсан хөдөлгөөний удирдлага нь төвлөрсөн серверийн оронд сүлжээний захад ойр байрлах зангуугаар хэрэглэгчийн хөдөлгөөнийг удирдана. Энэ судалгааны ажлаараа бид дараагийн үеийн мобайл сүлжээний тархсан хөдөлгөөний удирдлагад зориулсан оновчтой зангуу сонгох схемийг санал болгож байна. Бидний санал болгосон схем нь хэндовр хийгдэх үед үнэлгээний функц ашиглан боломжт зангуунуудыг эрэмблэх замаар алдааг бууруулж сүлжээний гүйцэтгэлийг сайжруулах зорилготой. Симуляцийн үр дүнд бидний санал болгосон схем нь хамгийн ойр, ачаалал харгалзсан, гүйцэтгэлд суурилсан зэрэг аргуудаас хяналтын мессеж дамжуулах тоо болон хэндоврын алдааг бууруулсан үр дүн үзүүлсэн.
Мобайл сүлжээний хэрэглэгчийн тоо хурдацтай өсөж байгаа нь хөдөлгөөнт байдлыг үр бүтээмжтэйгээр удирдах болон хэт их өгөгдлийн урсгалыг дамжуулахад хүндрэлтэй болгож байна. Энэхүү асуудлыг шийдэх зорилготой тархсан хөдөлгөөний удирдлага нь төвлөрсөн серверийн оронд сүлжээний захад ойр байрлах зангуугаар хэрэглэгчийн хөдөлгөөнийг удирдана. Энэ судалгааны ажлаараа бид дараагийн үеийн мобайл сүлжээний тархсан хөдөлгөөний удирдлагад зориулсан оновчтой зангуу сонгох схемийг санал болгож байна. Бидний санал болгосон схем нь хэндовр хийгдэх үед үнэлгээний функц ашиглан боломжт зангуунуудыг эрэмблэх замаар алдааг бууруулж сүлжээний гүйцэтгэлийг сайжруулах зорилготой. Симуляцийн үр дүнд бидний санал болгосон схем нь хамгийн ойр, ачаалал харгалзсан, гүйцэтгэлд суурилсан зэрэг аргуудаас хяналтын мессеж дамжуулах тоо болон хэндоврын алдааг бууруулсан үр дүн үзүүлсэн.
In the road problems, such as car brakes, traffic breakdown and accident have the negative impact on our travel. The vehicular networks and connected vehicles are addressed to solve these problems with traffic management. However, to better guide to traffic path, vehicles have required the alert to change their route. In this paper, we proposed the ad hoc participatory approach based alert system for the connected vehicles. Our proposed system collects the reports from nearby vehicles and sends the alert including traffic congestion, accident, road disturbances and other problems to the incoming vehicles for to bypass the problems on a road or change their traffic route. In order to test our proposal, we made the simulation environment and to analyze the performance that can show the advantages of our proposal.
In the road problems, such as car brakes, traffic breakdown and accident have the negative impact on our travel. The vehicular networks and connected vehicles are addressed to solve these problems with traffic management. However, to better guide to traffic path, vehicles have required the alert to change their route. In this paper, we proposed the ad hoc participatory approach based alert system for the connected vehicles. Our proposed system collects the reports from nearby vehicles and sends the alert including traffic congestion, accident, road disturbances and other problems to the incoming vehicles for to bypass the problems on a road or change their traffic route. In order to test our proposal, we made the simulation environment and to analyze the performance that can show the advantages of our proposal.
The rapidly-growing number of mobile subscribers has led to the creation of a large number of signalling messages. This makes it difficult to efficiently handle the mobility of subscribers in mobile cellular networks. The long-term evolution (LTE) architecture provides software-defined networking (SDN) to meet the requirements of 5G networks and to forward massive mobile data traffic. The SDN solution proposes separation of the control and data planes of a network. Centralized mobility management (CMM) is widely used in current mobile network technologies, such as 4G networks. One of the problems related to CMM is a single point of failure. To solve the problems of CMM and in order to provide for efficient mobility management, IETF has developed a solution called distributed mobility management (DMM), in which mobility is handled via the nearest mobility anchor. In this paper, we propose a DMM solution with handover operations for SDN-enabled mobile networks. The advantage of the proposed solution is that intra and inter handover procedures are defined with the data buffering and forwarding processes between base stations and mobility anchors. We adopt a simulation model to evaluate and compare the proposed solution with the existing solution in terms of handover latency, packet loss and handover failures.
