Enabling LTE and WiFi Coexisting in 5 GHz for Efficient Spectrum Utilization

Sun, Hongyu; Fang, Zhiyi; Liu, Qun; Lu, Zheng; Zhu, Ting

doi:10.1155/2017/5156164

Cited by 9 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The work does not take into account the sectorization and other important link layer or physical layer parameters. The LTE Unlicensed is also analyzed in [8]- [15]. In contrast, in [16], [17], the LTE licensed assisted access (LTE-LAA) is explored using the national instrument (NI) and an analytical model.…”

Section: Related Workmentioning

confidence: 99%

3-Sector Cell vs. Omnicell: Cell Sectorization Impact on the Performance of Side-by-Side Unlicensed LTE and 802.11ac Air Interfaces

Mina

Ghani

2019

IEEE Access

View full text Add to dashboard Cite

Due to the benefits of networks coexistence, it is common nowadays to equip mobile phones with two types of network interfaces: LTE and 802.11ac. However, using the same 5GHz bandwidth by 802.11ac and LTE in unlicensed spectrum, along with the structural differences of the two networks, result in multiple coexistence limitations and implementation issues. Considering the potential benefits of cell sectorization over the conventional omnicells for improving the performance of LTE users, can they achieve similar improvements in coexisting networks. Moreover, can LTE signals interfere and affect the performance of 802.11ac users coexisting with LTE. In this case, which LTE cell deployment, either omnicell or sectorized cell, has the most impact. Toward addressing these issues, this work proposes a link-level and physical-level model. The model consists of two distinct LTE sites: a conventional omnicell site (360 degrees) and a threesector site (3 × 120 degrees). In addition, the model contains two similar 802.11ac networks, one for each site, to coexist 802.11ac Wi-Fi stations with LTE users. The model is further optimized to include a pure 802.11ac network, dedicated as the baseline. Subsequently, the model is verified in NS3 through various simulation scenarios by means of measuring and quantifying the three-sector, omnicell, and pure 802.11ac networks performances to facilitate resolving any doubt of mobile operators and developers regarding the cell sectorization and coexistence issues. The simulation results indicate that in coexisting networks, LTE users in omnicell sites attain better performance than users in 3-sector sites, while the performance of 802.11ac users varies when different features are combined.

show abstract

Section: Related Workmentioning

confidence: 99%

3-Sector Cell vs. Omnicell: Cell Sectorization Impact on the Performance of Side-by-Side Unlicensed LTE and 802.11ac Air Interfaces

Mina

Ghani

2019

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Aside from coexistence of LTE and Wi-Fi in the time domain, some researches focused on the frequency-domain coexistence techniques [16][17]. The author of [16] proposed the low amplitude stream injection (LASI) technique, which injects low amplitude signals to the Wi-Fi sub-carriers to separate the LTE and Wi-Fi signals on the shared spectrum when certain part of their frequency bands overlapped. However, the proportion of the collision between the LTE and Wi-Fi signals is not fixed, which means that LASI has to adjust the collision ratio, and therefore the MAC layer of the Wi-Fi devices.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Time-Domain Interference Cancellation Receiver for LTE-U Systems

Wang

Chiueh

2020

IEEE Access

View full text Add to dashboard Cite

Mobile devices nowadays have penetrated our daily life and they play a big role in our social, professional, and recreational activities. In order to satisfy the booming demands for mobile communications from their customers, the telecommunication service provides work very hard to secure more spectrum and construct more base-stations. As such, they have looked into unlicensed spectrum for possible deployment of their mobile services. Toward this end, this paper presents a time-domain interference cancellation (TDIC) receiver technique that can enhance the efficiency of mobile communication networks coexisting with Wi-Fi traffic in the unlicensed bands. Moreover, transmitter power control and novel channel estimation are proposed to optimize the overall throughput of the fourth-generation mobile communication networks operating in the unlicensed bands (LTE-U). We further show by simulation and by over-the-air (OTA) real-time demonstration that the proposed solution indeed can achieve reliable reception of LTE-U signals under Wi-Fi interferences with different power levels.

show abstract

“…Operators have limited and expensive spectrum, so they need to plan the effective utilization of their radio resources. This can be done by offloading mobile data between licensed and unlicensed spectrum [1].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, many studies have analyzed the cooperation and offload between LTE and WiFi based on different criteria and assumptions. In [1], authors proposed a Low Amplitude Stream Injection (LASI) method to enable the simultaneous transmissions of WiFi and LTE frames in the same channel and recover the data from the conflicts. In [2], the offload to WiFi was analyzed based on the Remaining Throughput Scheme (RTS) for Wi-Fi selection.…”

Section: Introductionmentioning

confidence: 99%

Planning and Profit Sharing in Overlay WiFi and LTE Systems toward 5G Networks

Saliba¹,

Imad²,

Houcke³

et al. 2019

JSEA

View full text Add to dashboard Cite

With the increasing demand for data traffic and with the massive foreseen deployment of the Internet of Things (IoT), higher data rates and capacity are required in mobile networks. While Heterogeneous Networks (HetNets) are under study toward 5G technology, Wireless Fidelity (WiFi) Access Points (APs) are considered a potential layer within those multiple Radio Access Technologies (RATs). For this purpose, we have proposed in this paper a novel WiFi dimensioning method, to offload data traffic from Long Term Evolution (LTE) to WiFi, by transferring the LTE energy consuming heavy users, to the WiFi network. First, we have calculated the remaining available capacity of the WiFi network based on the estimated load of each WiFi physical channel using the overlapping characteristic of the channels. Then, we were able through this dimensioning method, to calculate the minimum needed number of WiFi APs that ensure the same or better throughput for the LTE transferred users. By this method, we have ensured additional capacity in the LTE network with minimum investment cost in the WiFi network. Finally, we have estimated the profit sharing between LTE and WiFi by considering data bundles subscription revenues and the infrastructure capital and operational costs. We have calculated for each network the profit share using a coalition game theory Shapley value that pinpoints the benefit of the cooperation using the proposed dimensioning method.

show abstract

Enabling LTE and WiFi Coexisting in 5 GHz for Efficient Spectrum Utilization

Cited by 9 publications

References 24 publications

3-Sector Cell vs. Omnicell: Cell Sectorization Impact on the Performance of Side-by-Side Unlicensed LTE and 802.11ac Air Interfaces

3-Sector Cell vs. Omnicell: Cell Sectorization Impact on the Performance of Side-by-Side Unlicensed LTE and 802.11ac Air Interfaces

Design and Implementation of Time-Domain Interference Cancellation Receiver for LTE-U Systems

Planning and Profit Sharing in Overlay WiFi and LTE Systems toward 5G Networks

Contact Info

Product

Resources

About