Eliminating Channel Feedback in Next-Generation Cellular Networks

Vasisht, Deepak; Kumar, Swarun; Rahul, Hariharan; Katabi, Dina

doi:10.1145/3161587.3161595

Cited by 8 publications

(9 citation statements)

References 36 publications

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“…For example, the center frequency of Band 1 (IMT) is 2100 MHz, while the duplex spacing is 190 MHz; the center frequency of Band 30 (WCS) used by AT&T in the United States is 2300 MHz, while the frequency spacing is only 45 MHz [212]. Field measurements disseminated in the literature have shown that the uplink and downlink transmissions travel along the same propagation paths and experience similar multipath clusters [213], [214]. If the channel parameters, such as the complex path gain, path delay and the angle of each individual path is accurately estimated from the pilot signals in one frequency band, the channel state in another frequency band can be calculated from these parameters based on the FDD channel model provided in [211].…”

Section: ) Fdd Modementioning

confidence: 99%

A New Frontier for IoT Security Emerging From Three Decades of Key Generation Relying on Wireless Channels

et al. 2020

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The Internet of Things (IoT) is a transformative technology, which is revolutionizing our everyday life by connecting everyone and everything together. The massive number of devices are preferably connected wirelessly because of the easy installment and flexible deployment. However, the broadcast nature of the wireless medium makes the information accessible to everyone including malicious users, which should hence be protected by encryption. Unfortunately, the secure and efficient provision of cryptographic keys for low-cost IoT devices is challenging; weak keys have resulted in severe security breaches, as evidenced by numerous notorious cyberattacks. This paper provides a comprehensive survey of lightweight security solutions conceived for IoT, relying on key generation from wireless channels. We first introduce the key generation fundamentals and protocols. We then examine how to apply this emerging technique to secure IoT and demonstrate that key generation relying on the randomness of wireless channels is eminently suitable for IoT. This paper reviews the extensive research efforts in the areas of theoretical modelling, simulation based validation and experimental exploration. We finally discuss the hurdles and challenges that key generation is facing and suggest future work to make key generation a reliable and secure solution to safeguard the IoT.

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Section: ) Fdd Modementioning

confidence: 99%

A New Frontier for IoT Security Emerging From Three Decades of Key Generation Relying on Wireless Channels

et al. 2020

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“…The beamformer can work with IMU sensors whose function is to feed the system with position of the airborne platform. Several techniques are available to decode the instantaneous channel coefficients, such as pilot signal, channel sounding, semi-blind estimation [ 149 ], blind estimates [ 150 ], and feedback channels [ 151 , 152 ].…”

Section: Multiple Input Multiple Output Technologymentioning

confidence: 99%

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

Kelechi¹,

Alsharif

Oluwole³

et al. 2021

Sensors

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Unmanned aerial vehicle (UAV) antenna tracking system is an electromechanical component designed to track and steer the signal beams from the ground control station (GCS) to the airborne platform for optimum signal alignment. In a tracking system, an antenna continuously tracks a moving target and records their position. A UAV tracking antenna system is susceptible to signal loss if omnidirectional antenna is deployed as the preferred design. Therefore, to achieve longer UAV distance communication, there is a need for directional high gain antenna. From design principle, directional antennas are known to focus their signal energy in a particular direction viewed from their radiation pattern which is concentrated in a particular azimuth direction. Unfortunately, a directional antenna is limited by angle, thus, it must always be directed to the target. The other limitation of a UAV mechanical beam steering system is that the system is expensive to maintain and with low reliability. To solve this problem, we are proposing the use of MIMO technology as a readily available technology for UAV beyond line of sight technology. Although UAV antenna tracking is domiciled in the mechanical beam steering arrangement, this study shows that this native technology could be usurped by MIMO beam forming.

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“…FDD mode is dominant in existing cellular connections, e.g., LTE, NB-IoT, and it is also an indispensable mode in 5G and beyond [ 27 ]. In FDD mode, the uplink and downlink transmissions operate at different carrier frequencies simultaneously.…”

Section: Crkg In Three Typical Duplex Modesmentioning

confidence: 99%

“…The duplex spacing is generally less than

of the center frequency. Literature and field measurements have shown that the uplink and downlink transmissions travel the same propagation paths and experience the same clusters [ 27 , 35 ]. The frequency spacing leads to the path differences between the uplink and downlink, especially to the phases.…”

Section: Crkg In Three Typical Duplex Modesmentioning

confidence: 99%

Physical Layer Key Generation in 5G and Beyond Wireless Communications: Challenges and Opportunities

Sun

Zhang

et al. 2019

Entropy

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The fifth generation (5G) and beyond wireless communications will transform many exciting applications and trigger massive data connections with private, confidential, and sensitive information. The security of wireless communications is conventionally established by cryptographic schemes and protocols in which the secret key distribution is one of the essential primitives. However, traditional cryptography-based key distribution protocols might be challenged in the 5G and beyond communications because of special features such as device-to-device and heterogeneous communications, and ultra-low latency requirements. Channel reciprocity-based key generation (CRKG) is an emerging physical layer-based technique to establish secret keys between devices. This article reviews CRKG when the 5G and beyond networks employ three candidate technologies: duplex modes, massive multiple-input multiple-output (MIMO) and mmWave communications. We identify the opportunities and challenges for CRKG and provide corresponding solutions. To further demonstrate the feasibility of CRKG in practical communication systems, we overview existing prototypes with different IoT protocols and examine their performance in real-world environments. This article shows the feasibility and promising performances of CRKG with the potential to be commercialized.

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Eliminating Channel Feedback in Next-Generation Cellular Networks

Cited by 8 publications

References 36 publications

A New Frontier for IoT Security Emerging From Three Decades of Key Generation Relying on Wireless Channels

A New Frontier for IoT Security Emerging From Three Decades of Key Generation Relying on Wireless Channels

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

Physical Layer Key Generation in 5G and Beyond Wireless Communications: Challenges and Opportunities

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