Routing algorithm design of satellite network architecture based on SDN and ICN

Abstract

Summary In view of the problems of low routing efficiency, complex control process, and difficult network management in big data environment in the traditional integrated space‐terrestrial network, in the paper, we propose a satellite network architecture called software‐defined information centric satellite networking (SDICSN) based on software‐defined networking (SDN) and information‐centric networking (ICN), and we design a virtual node matrix routing algorithm (VNMR) under the SDICSN architecture. The SDICSN architecture realizes the flexibility of network management and business deployment through the features of the separation of forwarding and controlling by the SDN architecture and improves the response speed of requests in the network by the centric of “content” as the ICN idea. According to the periodicity and predictability of the satellite network, the VNMR algorithm obtains the routing matrix through the relative orientation of the source and destination nodes, thus reducing the spatial complexity of the input matrix of the Dijkstra algorithm and then reducing the time complexity of the routing algorithm. For forwarding information base (FIB), the mechanism of combination of event driven and polling can be quickly updated in real time. Finally, the advantages of the SDICSN architecture in routing efficiency, request delay, and request aggregation are verified by simulation.

Performance of Neural Computing Techniques in Communication Networks

“…The findings of this research indicate that neural computing techniques [8] can effectively improve the performance of communication networks [9] in terms of throughput, delay, and error rate [10]. ANNs and GANs were found to improve throughput and error rate, while RNNs and LSTM were found to improve delay [11].…”

Dynamic Cache Replacement Strategy of Space Information Network Based on Cache Value

“…Dynamic inter-satellite routing problems. Therefore, this paper adopts [9] to propose a virtual node partition strategy to shield the dynamics of the satellite network. Since the various parameters of the space network constellation, including the inclination angle of the orbit and the right ascension of the ascending node, are designed in advance, the specific position information of the satellite at a certain time can be calculated, then each virtual node corresponds to The location of the ground area can also be determined.…”

“…[8] first constructs a target value function according to the content acquisition delay, content popularity and age parameters, so as to calculate the cache value of the content, and based on this, the cache replacement of nodes is performed. In [9] proposes a user attribute perception model based on popularity. Social network users and early content dissemination determine the impact of user attributes on future content dissemination, so that more popular content is cached on multiple satellites.…”

“…minutes, the request rate of each ICN terminal is to send 100 content block Interest packets per second, and the requested probability of each content block in the network obeys the Zipf[9] distribution.…”

Cache Servers Placement Based on Important Switches for SDN-Based ICN

“…The reason is that the traditional network is distributed in nature, while SDN is centralized architecture. The researchers have suggested several approaches to support ICN functionalities in SDN; we call these approaches as SDN-based ICN, addressing different issues like cache management, routing, communication between the controller and ICN-enabled router, and name-based forwarding [3][4][5][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. For cache management in SDN-based ICN, two types of approaches are devised as follows:…”