Wireless Communication Using Dual Antenna Arrays
Wireless Communication Using Dual Antenna Arrays
A survey of network virtualization
Computer Networks: The International Journal of Computer and Telecommunications Networking
Hybrid spectrum usage for overlaying LTE macrocell and femtocell
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Cell association and interference coordination in heterogeneous LTE-A cellular networks
IEEE Journal on Selected Areas in Communications - Special issue on cooperative communications in MIMO cellular networks
LTE mobile network virtualization
Mobile Networks and Applications
LTE virtualization: from theoretical gain to practical solution
Proceedings of the 23rd International Teletraffic Congress
Downlink capacity of interference-limited MIMO systems with joint detection
IEEE Transactions on Wireless Communications
Wireless network virtualization
ICNC '13 Proceedings of the 2013 International Conference on Computing, Networking and Communications (ICNC)
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Virtualizing wireless networks has the potential to improve resource usage efficiency (system capacity) through spectrum sharing while allowing for isolation between users and customization of applications {9}. In most work related to wireless network virtualization, the sharing of spectrum is considered at the level of chunks of frequency that do not interfere. Such spectrum sharing, where service provider SPA can use the spectrum allocated to SPB when SPB does not use it, results in multiplexing gains improving the resource usage (see for example, [12]). We argue that sharing radio resources that are a function of geography and signal strength, rather than slices of spectrum is also possible. When we consider sharing of radio resources, the transmit power, the interference, and the usage scenario (capabilities/needs of devices) become important in determining what can be shared. In this paper, the potential gain from sharing such radio resources while using MIMO for combating interference and exploiting spatial degrees of freedom is investigated in a two service provider collaboration scenario. The metric used is the capacity of the system (with a large cell and a small cell) as a function of separation distance, transmit power, cell range, and various MIMO settings. We show that radio resource sharing is feasible, but it has implications on isolation between users of different SPs and MIMO settings are an important factor.