Therefore, less processing operations per packet are required in an OBS network core optical router compared to an OPS network. Reduce processing requirements and core network energy consumption – A core optical router in an OBS network may face reduced control plane requirements when compared to that in an OPS network, as: A core optical router in an OPS network would have to perform processing operations for every arriving packet, wherelse in an OBS network the router performs processing operations for an arriving burst which contains several packets. Aggregating packets into bursts can reduce guardband impact on data channel throughput. If the guardband is large relative to the average packet or burst size, then it can limit data channel throughput. įurthermore, there must be a guardband in the data channel between packets or bursts, so that core optical router data planes have adequate time to switch packets or bursts. This limitation can be overcome by using OBS. Using JET can create a throughput limitation in an edge router in an OPS system. In such networks, delayed reservation schemes such as Just Enough Time (JET) are combined with electronic buffering at edge routers to reserve bandwidth. Core optical network nodes are likely to either be unbuffered or have limited buffers. Remove throughput limitation – Optical buffer technology has not matured enough to enable low cost manufacturing and widespread use in optical networks. This is similar to the advantage offered by packet switching over circuit switching. In comparison, OBS does not require end-to-end lightpath set up, and therefore may offer more efficient bandwidth utilization compared to an OCS system. If the data transmission duration is short relative to the set up time, bandwidth may not be efficiently utilized in the OCS system. More efficient bandwidth utilization – In an OCS system, a lightpath must be set up from source to destination in the optical network. After the burst has passed a router, the router can accept new reservation requests.Īdvantages of OBS over OPS and OCS
#Advantages of optisystem full#
In OBS data is transmitted with full transparency to the intermediate nodes in the network. The data burst can cut through intermediate nodes, and data buffers such as fiber delay lines may be used. The control signal is transmitted in optical form in a separated wavelength termed the control channel, but signaled out of band and processed electronically at each OBS router, whereas the data burst is transmitted in all optical form from one end to the other end of the network. A control signal (also termed burst header or control packet) is associated to each data burst.
OBS features the separation between the control plane and the data plane. Edge router architectures have been proposed (see ). Various assembling schemes based on time and/or size exist (see burst switching). In OBS, packets are aggregated into data bursts at the edge of the network to form the data payload. OBS can be used for realizing dynamic end-to-end all optical communications. OBS provides more bandwidth flexibility than wavelength routing but requires faster switching and control technology. Therefore, OBS granularity is finer than optical circuit switching (OCS). OBS considers sets of packets with similar properties called bursts. Performance has been analyzed on the basis of quality factor, signal to noise ratio (SNR), and total power of the received signal.The purpose of optical burst switching (OBS) is to dynamically provision sub-wavelength granularity by optimally combining electronics and optics. In this paper, modeling and performance analysis of a 10-Gbps inter-satellite communication link with two satellites separated at a distance of 1,200 km has been done using OPTISYSTEM simulation software. The IsOWC links have many advantages over the previously existing microwave satellite communication technologies such as higher bandwidth, lower power consumption, low cost of implementation, light size, and weight. One of the most important applications of FSO is inter-satellite optical wireless communication (IsOWC) links which will be deployed in the future in space.
#Advantages of optisystem free#
Most of the technical aspects of FSO are similar to that of optical fiber communication, with major difference in the information signal propagation medium which is free space in case of FSO rather than silica glass in optical fiber communication.
Free-space optical (FSO) communication has the advantages of two of the most predominant data transmission technologies - optical fiber communication and wireless communication.
0 kommentar(er)
