Radio Capacity Estimation for Millimeter Wave 5G Cellular Networks Using Narrow Beamwidth Antennas at the Base Stations

Abstract

This paper presents radio frequency (RF) capacity estimation for millimeter wave (mm-wave) based fifth-generation (5G) cellular networks using field-level simulations. It is shown that, by reducing antenna beamwidth from 65∘ to 30 ∘ , we can enhance the capacity of mm-wave cellular networks roughly by 3.0 times at a distance of 220 m from the base station (BS). This enhancement is far much higher than the corresponding enhancement of 1.2 times observed for 900 MHz and 2.6 GHz microwave networks at the same distance from the BS. Thus the use of narrow beamwidth transmitting antennas has more pronounced benefits in mm-wave networks. Deployment trials performed on an LTE TDD site operating on 2.6 GHz show that 6-sector site with 27 ∘ antenna beamwidth enhances the quality of service (QoS) roughly by 40% and more than doubles the overall BS throughput (while enhancing the per sector throughput 1.1 times on average) compared to a 3-sector site using 65 ∘ antenna beamwidth. This agrees well with our capacity simulations. Since mm-wave 5G networks will use arbitrary number of beams, with beamwidth much less than 30 ∘ , the capacity enhancement expected in 5G system when using narrow beamwidth antennas would be much more than three times observed in our simulations.

Research Challenges and Opportunities in 5G Network

“…Results depicted in this paper shows that by reducing antenna beamwidth from 65° to 30°, capacity can enhance roughly by 3.0 times at a distance of 220 m from the base station (BS) [44] To conclude, in spite of many issues and challenges regarding successful implementation of 5G, visual communication will become prominent, as if we will be meeting face to face and it will benefit the mankind, since it can minimize problems in many ways not just in terms of speed and security but also in terms of increased number of connected devices and high efficiency. Also, very less or no evidence is published that can show the drawbacks of 5G.…”

“…Results depicted in this paper show that by reducing antenna beam width from 65° to 30°, capacity can enhance roughly by 3.0 times at a distance of 220 m from the base station (BS) [40].…”

“…Kim et al, discussed the application of massive MIMO in 4G cellular system in terms of deployment scenarios and antenna array implementation [40]. J Choi et al proposed an open-loop training frameworks for channel estimation and closed-loop training frameworks for channel prediction for FDD-based massive MIMO System [39].…”

Dynamic Hardware Resource Provisioning in Hybrid Radio Access Networks

“…in which P k,b(k) is the received power on subcarrier n assigned to user k by its serving BS b(k), σ 2 is the thermal noise power and I k is the intercell interference from neighboring SCs. In this work, we assume that all the SCs are transmitting with maximum power P S. The received power at user k from BS b(k) can be calculated by means of (2), which relates the received power of a node as a result of the transmitted power and the fading of the signal, the latter calculated by the SUI model [19]. This can be expressed as:…”

Random-Access Technique for Self-Organization of 5G Millimeter-Wave Cellular Communications

“…As the demand for capacity in mobile broadband communications increases drastically every year, wireless communication industries are preparing to support up to a thousandfold increase in total mobile traffic by 2020 [1][2][3]. Millimeter-wave (mm-wave) communications with possible multigigabit-persecond data rates have attracted much attention as a candidate technology for the 5G era [4,5]. Highly directional beamforming antennas are necessary at both the base station (BS) and mobile station (MS) to compensate for the high attenuation in the mm-wave frequency band and to extend its transmission range.…”