Podcast
Questions and Answers
What are some factors that contribute to making communication across wireless links more difficult?
What are some factors that contribute to making communication across wireless links more difficult?
What does SNR stand for in the context of wireless links?
What does SNR stand for in the context of wireless links?
How can a sender deal with high bit-error rates in wireless communication?
How can a sender deal with high bit-error rates in wireless communication?
What is one issue caused by multiple wireless senders and receivers?
What is one issue caused by multiple wireless senders and receivers?
Signup and view all the answers
What is a base station responsible for in a wireless network?
What is a base station responsible for in a wireless network?
Signup and view all the answers
What does a wireless link typically connect in a wireless network?
What does a wireless link typically connect in a wireless network?
Signup and view all the answers
What are some important wireless link characteristics compared to wired links?
What are some important wireless link characteristics compared to wired links?
Signup and view all the answers
In 2019, what was the approximate ratio between mobile-broadband-connected devices and fixed-broadband-connected devices?
In 2019, what was the approximate ratio between mobile-broadband-connected devices and fixed-broadband-connected devices?
Signup and view all the answers
Why is interference a significant issue in wireless networks?
Why is interference a significant issue in wireless networks?
Signup and view all the answers
How does radio signal strength change as it propagates through matter in wireless links?
How does radio signal strength change as it propagates through matter in wireless links?
Signup and view all the answers
What is multipath propagation in wireless networks?
What is multipath propagation in wireless networks?
Signup and view all the answers
What are the two main challenges in wireless and mobile networks discussed in the text?
What are the two main challenges in wireless and mobile networks discussed in the text?
Signup and view all the answers
Study Notes
Wireless Link Challenges
- Factors that contribute to making communication across wireless links more difficult include high bit-error rates, interference, and multipath propagation.
SNR Definition
- SNR stands for Signal-to-Noise Ratio in the context of wireless links.
Dealing with High Bit-Error Rates
- To deal with high bit-error rates, a sender can use error-correcting codes, retransmit erroneous packets, and adapt modulation and transmission power.
Issue with Multiple Senders and Receivers
- One issue caused by multiple wireless senders and receivers is collision, which occurs when multiple devices transmit at the same time.
Base Station Role
- A base station is responsible for managing connections, allocating bandwidth, and coordinating data transmission in a wireless network.
Wireless Link Connections
- A wireless link typically connects a mobile device to a base station or an access point in a wireless network.
Wireless Link Characteristics
- Compared to wired links, wireless links are characterized by higher bit-error rates, path loss, and interference.
Mobile-Broadband Ratio
- In 2019, the approximate ratio between mobile-broadband-connected devices and fixed-broadband-connected devices was 8:1.
Interference Issue
- Interference is a significant issue in wireless networks because it can cause packets to be lost or corrupted, leading to reduced network performance.
Radio Signal Strength
- Radio signal strength decreases as it propagates through matter, resulting in path loss and degraded signal quality.
Multipath Propagation
- Multipath propagation occurs when a radio signal takes multiple paths to reach the receiver, causing delayed and distorted versions of the signal to arrive.
Wireless and Mobile Network Challenges
- The two main challenges in wireless and mobile networks are dealing with high bit-error rates and managing mobility and handovers.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on wireless links, WiFi LANs, cellular networks, mobility management principles, and the impact of mobility on higher-layer protocols. Learn about the context of wireless and mobile networks, including the rise in mobile phone and broadband-connected devices.
