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Marco Realacci 2024-10-30 01:24:56 +01:00
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16
.obsidian/workspace.json vendored
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@ -13,12 +13,12 @@
"state": { "state": {
"type": "markdown", "type": "markdown",
"state": { "state": {
"file": "Foundation of data science/notes/Logistic Regression for C > 1.md", "file": "Autonomous Networking/notes/q&a.md",
"mode": "source", "mode": "source",
"source": false "source": false
}, },
"icon": "lucide-file", "icon": "lucide-file",
"title": "Logistic Regression for C > 1" "title": "q&a"
} }
} }
], ],
@ -180,8 +180,13 @@
}, },
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"Foundation of data science/notes/Logistic Regression.md", "Autonomous Networking/notes/8.md",
"Autonomous Networking/notes/2 RFID.md",
"Autonomous Networking/notes/4 WSN Routing.md",
"Autonomous Networking/notes/5 Drones.md",
"Autonomous Networking/notes/6 Internet of Things.md",
"Foundation of data science/notes/Logistic Regression for C > 1.md", "Foundation of data science/notes/Logistic Regression for C > 1.md",
"Foundation of data science/notes/Logistic Regression.md",
"Foundation of data science/notes/1 CV Basics.md", "Foundation of data science/notes/1 CV Basics.md",
"Foundation of data science/images/Pasted image 20241025161824.png", "Foundation of data science/images/Pasted image 20241025161824.png",
"Foundation of data science/images", "Foundation of data science/images",
@ -194,24 +199,19 @@
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"Foundation of data science/images/Pasted image 20241025162152.png", "Foundation of data science/images/Pasted image 20241025162152.png",
"Autonomous Networking/images/Pasted image 20241025092932.png", "Autonomous Networking/images/Pasted image 20241025092932.png",
"Autonomous Networking/notes/2 RFID.md",
"Autonomous Networking/notes/q&a.md", "Autonomous Networking/notes/q&a.md",
"Autonomous Networking/notes/3 WSN MAC.md", "Autonomous Networking/notes/3 WSN MAC.md",
"Autonomous Networking/notes/8.md",
"Autonomous Networking/notes/7 RL.md", "Autonomous Networking/notes/7 RL.md",
"conflict-files-obsidian-git.md", "conflict-files-obsidian-git.md",
"Autonomous Networking/slides/AutonomousNet-Class11-2122-Performance_of_action_selection_methods_UCB.pdf", "Autonomous Networking/slides/AutonomousNet-Class11-2122-Performance_of_action_selection_methods_UCB.pdf",
"Biometric Systems/notes/4. Face recognition.md", "Biometric Systems/notes/4. Face recognition.md",
"Biometric Systems/slides/LEZIONE5_NEW_More about face localization.pdf", "Biometric Systems/slides/LEZIONE5_NEW_More about face localization.pdf",
"Autonomous Networking/slides/7 RL1.pdf", "Autonomous Networking/slides/7 RL1.pdf",
"Autonomous Networking/notes/6 Internet of Things.md",
"Autonomous Networking/slides/6 IoT.pdf", "Autonomous Networking/slides/6 IoT.pdf",
"Biometric Systems/notes/2. Performance indexes.md", "Biometric Systems/notes/2. Performance indexes.md",
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"Biometric Systems/slides/LEZIONE2_Indici_di_prestazione.pdf", "Biometric Systems/slides/LEZIONE2_Indici_di_prestazione.pdf",
"Biometric Systems/notes/3. Recognition Reliability.md", "Biometric Systems/notes/3. Recognition Reliability.md",
"Autonomous Networking/notes/4 WSN Routing.md",
"Autonomous Networking/notes/5 Drones.md",
"Autonomous Networking/slides/5 Drones.pdf", "Autonomous Networking/slides/5 Drones.pdf",
"Biometric Systems/slides/LEZIONE4_Face introduction and localization.pdf", "Biometric Systems/slides/LEZIONE4_Face introduction and localization.pdf",
"Foundation of data science/slides/IP CV Basics.pdf", "Foundation of data science/slides/IP CV Basics.pdf",

2
Autonomous Networking/notes/q&a.md
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@ -37,7 +37,7 @@ In Frame Slotted Aloha, the number of slots in a frame is always the same. If tw
In TSA instead, for each collision slot s, a new child frame with a smaller slot number is issued. And only the tag that decided to transmit in slot s will transmit in the same frame. In TSA instead, for each collision slot s, a new child frame with a smaller slot number is issued. And only the tag that decided to transmit in slot s will transmit in the same frame.
The TSA protocol improves the system efficiency as the probability of having a collision is lower. But for both protocols, to have good performance is important to have an estimate of the number of tags to identify as we need to chose the number of slots based on it. If we have too many slots, we will have a lot of time wasted in idle slots, if we have too few slots, we will have a lot of collisions. The TSA protocol improves the system efficiency as the probability of having a collision is lower. But for both protocols, to have good performance is important to have an estimate of the number of tags to identify as we need to chose the number of slots based on it. If we have too many slots, we will have a lot of time wasted in idle slots, if we have too few slots, we will have a lot of collisions.
#### Q: in a slotted aloha protocol for RFID system how is the estimated tag population participating into intermediate frames? #### Q: in a slotted aloha protocol for RFID system how is estimated the tag population participating into intermediate frames?
Main issues: Main issues:
- total number of tags to identify is not known - total number of tags to identify is not known
- initial frame size is set to a predefined value (e.g. 128) - initial frame size is set to a predefined value (e.g. 128)