Optimizing Backup Optical-Network-Units Selection and Backup Fibers Deployment in Survivable Hybrid Wireless-Optical Broadband Access Networks

Interference-aware spectrum sensing mechanisms in cognitive radio networks

“…According to the state of PU and the detection result of SU, four situations exist when SU has accessed into the channel, which can be seen in Table 1. Herein, C 00 ¼ log 2 …”

“…The rapid development of network services and applications has an increasing demand of wireless spectrum resource, which is actually limited [1][2][3]. Conventional access policies only allow licensed users, called Primary Users (PUs), to utilize pieces of licensed spectrum regardless of whether PUs are active or not, which will cause the underutilization of spectrum resource.…”

Maximum covering planning of survivable Fiber-Wireless access network considering network connectivity

“…(5)-(9); Each WiFi router placed at the potential location can connect to one ONU with the available wireless path between them, i.e., the constraints in Eqs. (10)- (14).…”

“…Hence, compared with the traditional access networks, FiWi access network puts forward higher requirements for survivability enhancement and fault tolerance. Therefore, it is necessary to study the survivability mechanisms in order to improve the robustness and reliability of FiWi access network [11][12][13][14][15].…”

A new dynamic hierarchical reputation evaluation scheme for hybrid wireless mesh networks

“…Wireless mesh networks have become the focus of research in recent years because of their low maintenance overhead and high data rates [1][2][3]. Wireless mesh networks are multi-hop, decentralized and self-organizing; thus, they show great promise for numerous next-generation wireless services.…”