Amazon Sidewalk vs. NB-IoT
Comparing 2 standards across 13 specifications. 13 key differences identified.
Amazon Sidewalk is a low-bandwidth, community-shared wireless network protocol developed by Amazon. By pooling a tiny fraction of internet bandwidth from compatible residential 'Sidewalk Bridges' (Echo speakers and Ring doorbells), it uses 900 MHz LoRa/FSK and 2.4 GHz BLE to connect outdoor smart lights, pet trackers, and package sensors beyond home Wi-Fi reach.
Narrowband IoT (NB-IoT, standardized as 3GPP LTE Cat-NB1 in Rel-13 and Cat-NB2 in Rel-14) is a licensed cellular LPWAN standard. Utilizing a single 180 kHz PRB (Physical Resource Block), it delivers up to +20 dB coverage enhancement over standard LTE, enabling deep indoor penetration for underground water meters, smart grids, and smart cities.
Specification Comparison Table
13 Parameters| Parameter / Spec | ||
|---|---|---|
|
Network Protocol
|
Amazon Sidewalk Architecture | — |
|
Physical Layer Radios
|
900 MHz LoRa (Chirp Spread Spectrum), 900 MHz FSK, 2.4 GHz Bluetooth Low Energy (BLE) | — |
|
Bridge Bandwidth Pool Limit
|
80 kbps per bridge / 500 MB total monthly cap | — |
|
Network Topology
|
Shared Community Star-of-Stars Mesh | — |
|
Typical Range per Bridge
|
Up to 500m (BLE) / up to 1.5–5 km (900 MHz LoRa) | — |
|
Security Encryption
|
3-layer end-to-end encryption (Application, Network, and Device keys) | — |
|
3GPP Specification
|
— | Release 13 (Cat-NB1) / Release 14 (Cat-NB2) |
|
Carrier Channel Bandwidth
|
— | 180 kHz (equivalent to 1 standard LTE PRB) |
|
Deployment Modes
|
— | In-Band (within LTE carrier), Guard-Band (LTE edge), Standalone (re-farmed GSM 200 kHz) |
|
Peak Data Rates (Cat-NB2)
|
— | Up to 127 kbps Downlink / 159 kbps Uplink |
|
Link Budget / Coverage Gain
|
— | 164 dB (+20 dB gain over standard cellular) |
|
Power Saving Features
|
— | PSM (Power Saving Mode) and eDRX (extended Discontinuous Reception) |
|
Connected Node Density
|
— | Up to 100,000 devices per cell |