Wi-Fi Points Research Articles

Passive Human Tracking With WiFi Point Clouds

Passive Human Tracking With WiFi Point Clouds

Evaluation of The Kelurahan Free Internet Program to support e-learning and e-marketing in Cilegon City

The Kelurahan Free Internet Program is a program to provide free wifi in public facilities (wifi points) spread across 43 urban villages which is aimed at supporting economic and educational activities in the City of Cilegon during the Covid-19 pandemic. This study is aimed at obtaining information on how students and businesses can use the free internet in online learning activities and online marketing. The research method used is descriptive method using a qualitative approach. The research was conducted at 3 (three) wifi points with 3 respondents in each point including students, micro and small business actors and free internet managers. Semi-structured interviews were conducted and a list of questionnaire was compiled for the interview which was developed based on the related literature. The results of this study indicate that the free wifi program has been used by students and some business actors, both for online learning, online marketing or other uses. However, this has not been supported by good management, especially in the aspect of regulating operational hours, changing passwords periodically, monitoring usage and program assistance. For this reason, it is necessary to provide technical training for managers, use of wifi points for assistance to business actors as well as periodic monitoring from related agencies.Keywords: free wifi, online learning, online marketing.

Optimizing Unlicensed Spectrum Sharing for LTE-U and WiFi Network Coexistence

Long-term evolution in unlicensed spectrum (LTE-U) is an emerging technology for expanding cellular network capacity without additional spectrum cost. This paper investigates effective spectrum sharing for coexisting Wi-Fi and LTE-U services. Based on a novel hyper access point (HAP) we introduced for effectively embedding LTE-U in unlicensed Wi-Fi band, LTE-U can directly take advantage of the Wi-Fi point coordination function protocol. To facilitate the coexistence, our HAP dedicates a contention-free period to LTE-U users and allows a contention period (CP) for traditional Wi-Fi users. We investigate the optimization of joint user association and resource allocation to further improve system throughput and user fairness. We formulate a network utility maximization problem based on the Nash bargaining solution (NBS), for which we derive a closed-form expression for the optimal CP length under a given user association. We analyze this NBS-based utility maximization and the performance of the proposed algorithm under log-normal fading, Rayleigh fading, and Rician fading channel models, respectively. Our numerical results corroborate our analysis and demonstrate effective improvement of the system performance by the proposed HAP algorithm against traditional LTE-U deployment.

Proposing of Collisions Free and Secure Network for IEEE 802. 11 WLAN

wireless network contains various problems such as packets delay and drop because of collision due to the heavy traffic. Packets are dropped either by the buffer overflow or by the MAC layer contentions. Such packet losses decrease throughput. Packet delay is also a result of poor utilization of network capacity when it is integrated with routing algorithms. Routing protocol contains very serious security issues in adhoc network. SAODV, SEAR and SEED protocols are used for solutions. But when some security measures are taken it may results in decreasing the throughput. Even network security in infrastructure mode for Wi-Fi point is of great concern where pre-RSNA as well as RSNA methods fail to provide proper security. This paper simulates such problems in NS2 and proposes the model of securing and increasing the throughput with least delay. . + 0.2 0 1 Tcp 40 - 1 0.0 1.0 0 0 - 0.2 0 1 Tcp 40 - 1 0.0 1.0 0 0 r 0.210032 0 1 Tcp 40 - 1 0.0 1.0 0 0 + 0.210032 1 0 Ack 40 - 1 1.0 0.0 0 1 - 0.210032 1 0 Ack 40 - 1 1.0 0.0 0 1 r 0.220064 1 0 Ack 40 - 1 1.0 0.0 0 1 + 0.220064 0 1 Tcp 1040 - 1 0.0 1.0 1 2 - 0.220064 0 1 Tcp 1040 - 1 0.0 1.0 1 2 + 0.220064 0 1 Tcp 1040 - 1 0.0 1.0 2 3 - 0.220896 0 1 Tcp 1040 - 1 0.0 1.0 2 3 r 0.230896 0 1 Tcp 1040 - 1 0.0 1.0 1 2 1. s R send, receive, drop, forwarding - s / r / D / f