1. How a shared-bike fleet stays online
Shared bikes and shared e-bikes use a smart lock and an onboard terminal to unlock, report location, enforce a geofence, take dispatch jobs, and send fault codes. LBS rides on GPS and BeiDou, which decides whether a return is inside the allowed area and whether the bike has left it. OTA pushes firmware and settings. Bikes sit all over the street and need a cellular link day and night so a rider can scan to unlock and operations can move the fleet. SimtoLink supplies 4G and LTE Cat.1 SIMs to shared-mobility operators, with a data pool, automatic operator selection, batch activation, and an API into the operations platform.
2. What each bike has to send and receive
A bike reports location, battery, lock state, and fault codes, and it receives unlock commands, dispatch jobs, and firmware. An e-bike also reports pack status and distance ridden. Unlock delay and location freshness are not equally strict in every part of the city.
Smart lock and unlock
The lock takes the unlock command and reports its state over 4G. Riders feel every extra second, so the link has to answer quickly and stay up. Choosing among operators is what keeps a lock reachable on a weak street.
Geofence and dispatch
Leaving a geofence, returning outside the allowed area, and parking violations all depend on a fresh location. The operations platform moves bikes from the heat map, so that location has to keep arriving.
Shared e-bikes
An e-bike reports pack charge, remaining range, and distance, which drives battery-swap dispatch and theft alerts. LTE Cat.1 covers the city without the cost of a full 4G plan on every bike.
Lock firmware and remote upkeep
Lock firmware and settings go out by OTA. Run those jobs off peak. One update is about 1–5MB, and a shared data pool absorbs a batch of them.
3. What the bike link has to guarantee
- Unlock in about a second: Riders notice the wait. The lock should answer within seconds, and operator selection is what keeps it reachable.
- Location that operations can trust: Geofence exits, return-area checks, and heat-map dispatch need a steady GPS/BeiDou fix.
- Coverage while the bike moves: Bikes are scattered and in motion. Several operators and bands are what make a citywide fleet practical.
- Unlock tied to payment: Use TLS, a private APN, and an IP allowlist so the payment path meets the security bar for the transaction.
- OTA without blowing the plan: Firmware and settings go out over the air. A data pool covers a batch, and off-peak is the right window.
4. Which SIM belongs on which bike
Bandwidth and delay depend on the vehicle and the job. Fleet size and cost both belong in the choice. Use the table as a starting point:
| Use | Recommended network | Why it fits |
|---|---|---|
| Smart lock on a shared bike | LTE Cat.1 | Unlock, location, and status, with cost and coverage kept together |
| Shared e-bike | 4G | Pack status, distance, and battery-swap dispatch; moderate bandwidth |
| Dense city deployment | 4G | Operator selection so more unlock attempts succeed |
5. How much data a bike uses
A bike typically uses about 50–200MB a month, depending on how often it reports and whether OTA is in the month. One OTA is about 1–5MB. Pool SIMs by vehicle type, keep 20%–30% spare, and use more than one operator so the city stays covered.
6. Security around unlock and payment
Unlock is tied to payment, so treat the deployment as medium security. Sessions need TLS/SSL, a private APN, and an IP allowlist. SimtoLink provides the private APN and completes real-name registration for the SIMs.
7. What SimtoLink would put on the fleet
For smart locks and geofences, use 4G or LTE Cat.1 IoT SIMs. The lock has to report location as it moves and accept a remote unlock, so operator selection matters. SimtoLink plans for 99.9% network availability, a flexible data pool, and an API into the shared-mobility platform.
8. Putting bikes on the street
Take a shared-bike rollout through these stages:
Match the SIM to the vehicle type and how many bikes you drop. In the target city, measure coverage and unlock delay, set the APN and IP allowlist, alert at 80% of the data allowance, and keep a sweep for bikes that stop reporting. SimtoLink stays on the project from the pilot street through the full city. Contact us for a plan sized to that fleet.