A new mobile SIP proxy integration solution to increase scalability in 5G mobile operators

In this paper, a new integrated solution with external Session Initial Protocol (SIP) proxy application to enhance the scalability in mobile network operators is proposed. The integrated Network Function Virtualization (NFV) concept is utilized to support the proposed solution. This maximizes the usage of existing bandwidths by using unlicensed spectrum bandwidth instead of licensed RF spectrum to support a larger number of smartphones and data plans. Several Quality of Service (QoS) metrics are introduced to validate the proposed solution using different voice codecs and are compared to LTE QoS metrics for voice communication to verify that the proposed solution is reliable. As a result, the G 711 u-law voice codec is found to provide the optimum performance.

[1]  Nadir Hakem,et al.  Performance evaluation of VoIP calls over MANET for different voice codecs , 2017, 2017 IEEE 7th Annual Computing and Communication Workshop and Conference (CCWC).

[2]  Anna Brunstrom,et al.  SDN/NFV-Based Mobile Packet Core Network Architectures: A Survey , 2017, IEEE Communications Surveys & Tutorials.

[3]  Navrati Saxena,et al.  Next Generation 5G Wireless Networks: A Comprehensive Survey , 2016, IEEE Communications Surveys & Tutorials.

[4]  Yonggang Wen,et al.  When Cloud Media Meet Network Function Virtualization: Challenges and Applications , 2017, IEEE MultiMedia.

[5]  Mark Handley,et al.  SIP: Session Initiation Protocol , 1999, RFC.

[6]  Laura Galluccio,et al.  Transmission of VoIP traffic in multihop ad hoc IEEE 802.11b networks: experimental results , 2005, First International Conference on Wireless Internet (WICON'05).

[7]  J. Yu,et al.  Call Admission Control and Traffic Engineering of VoIP , 2007, 2007 Second International Conference on Digital Telecommunications (ICDT'07).