This paper considers distance adaptive dynamic routing and spectrum assignment (RSA) for elastic optical networks with shared backup path protection (SBPP). Efficient heuristic algorithms based on window planes are proposed implementing modulation format RSA so as to maximize spare capacity sharing among multiple lightpaths. A differentiated sharable frequency slot cost was also defined the first time more efficiently share resource. Network performance is evaluated in terms of bandwidth...

We propose two protection path-based spectrum defragmentation algorithms to improve the utilization for an elastic optical network with shared backup path (SBPP). Results show that proposed can significantly efficiency compared case without defragmentation.

Spectrum defragmentation can improve spectrum utilization for an elastic optical network (EON). However, most of the existing studies have focused on working lightpaths, which may affect upper-layer services. This paper considers protection lightpath-based hitless distance adaptive networks. Without affecting but defragmenting spectra we expect to achieve truly EON. Shared backup path (SBPP) technique is employed as a representative evaluate benefit proposed scheme. To smooth future arriving...

We propose a protection path-based spectrum defragmentation approach to improve the utilization of an elastic optical network under 1+1 path technique. Results show that proposed can significantly spectral efficiency compared case without defragmentation.

Mobile IPv6 provides mobility support for hosts connecting to the Internet, it solves addressable problems of mobile terminal, and terminals can obtain network services without changing IP addresses. But MIPv6 introduce substantial expenses lengthy handoff delay during handover process, meanwhile, more sensitive real-time applications require a packet lossless QoS guarantee handoff. It proposes an optimized seamless mechanism on basis existing methods in this paper, builds top hierarchical...

Abstract In this paper, in order to solve the modal aliasing problem of EMD decomposition algorithm and EEMD optimize vocal audio data on basis adaptive VMD algorithm, EEMD-VMD second-order is proposed decompose digitized time series music resources, update construction digital library resources. Combined with steps resources library, overall framework designed constructed main line resource types secondary content categories. Design experimental environment, preprocess signal features,...

Abstract This paper proposes a random access network admission control algorithm under delay and jitter constraints to efficiently guarantee the quality of service visible light communication system. The multi-packet reception technology is considered enhance service, interrupted Bernoulli process used model arrival packets. queuing system constructed from perspective single transmission link, this derives probability successful for terminals. performance are evaluated according state...

We apply an adaptive forward error correction (FEC) allocation strategy to Elastic Optical Network (EON) operated with shared backup path protection (SBPP). To maximize the protected network capacity that can be carried, Integer Linear Programing (ILP) model and a spectrum window plane (SWP)-based heuristic algorithm are developed. Simulation results show FEC coding overhead required by scheme is significantly lower than needed fixed resulting in higher for strategy. The also outperform both...

Visible light communication (VLC)/radio frequency (RF) hybrid networks exhibit large system capacity, high reliability, and low access latency. To simplify the resource allocation process of such networks, we devise a random compensation algorithm based on supermartingale theory. Firstly, network queuing model with arrival traffic service mechanism are established. Then, delay performance is evaluated theory, tighter violation probability bound derived. A search designed to obtain bandwidth...

The major goal of TE (traffic engineering) is to facilitate efficient and reliable network operations while simultaneously optimizing utilization traffic performance. Therefore it necessary introduce mechanism ISPs' (Internet Service Providers') networks with the purpose improving performance reducing costs. In this paper, a novel based on GMPLS (Generalized Multi-Protocol Label Switching) proposed analyzed in detail, demonstrated IP over ASON (automatically switched optical network)...

We propose a supermartingale-based resource matching algorithm to guarantee delay quality of service (QoS) for the visible light communication uplink system. A network queuing model with multiple bursty arrivals is established, and multipacket reception technology considered alleviate terminal collisions. introduce supermartingale theory evaluate QoS performance, tighter delay-violation probability bound derived. Relying on analysis, we design search achieve under constraint. The simulation...

The accuracy of conventional two-step location methods is insufficient since the information loss problem in parameter matching procedure. In this paper, we propose a Reduced Dimension Direct Position Determination with Capon (RD-DPD-Capon) algorithm. By introducing idea dimension reduction, proposed algorithm avoids grid search along attenuation coefficient domain. Therefore, RD-DPD-Capon has relatively low computational complexity. Meanwhile, inherits high resolution and localization...