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603160.SH

Narrowband Internet of Things (NB-IoT) is a cellular-based low-power wide area network (LPWAN) radio technology and is future-proof towards the new 5G communication standard. The highly secure technology features ultra-low power consumption, deep coverage, and mass connectivity, making it a reliable choice for big data applications (such as smart city, smart agriculture, and smart healthcare) through wireless communication. In addition, NB-IoT evolves along with 5G massive Machine Type Communications (mMTC) as a truly future save technology.

NB-IoT 3GPP Rel-14 Key Features

Reduced latency and
increased peak rate
Cat-NB2 and 2 HARQ processes
Uplink/Downlink peak rate up to
150 kbps/120 kbps
More powerful in positioning and
enhanced NB2 mobility
OTDOA and E-CID
CP re-establishment
Optimized power consumption and 
increased network capacity
AS and NAS release assistance indication 
Measurement reporting and multi-Carrier enhancement

NB-IoT 3GPP Rel-15, Rel-16, Rel-17 Key Features

Optimized power consumption
NB-IoT wake-up signal (NWUS), early data transmission (Mobile Originated), and reduced system acquisition time
RRC connection release without RLC AM poll, and relaxed monitoring for cell reselection
Improved spectrum efficiency
Power headroom reporting and enhanced scheduling request
Improved narrowband measurement accuracy and access barring enhancement
More  key features
Group wake-up signal; early data transmission (Mobile Terminated); Preconfigured UL Resources (PUR); narrowband reference signal (NRS) enhancement, and UE-specific DRX
Multiple TB scheduling; CQI reporting in Msg3; 16QAM

GR851x series

The GR851x family is a low-power System-on-Chip (SoC) that includes an application subsystem with NB-IoT cellular, applicable to a wide range of application scenarios such as smart city, smart logistics, healthcare, and smart agriculture.

Part Number
AP
RAM
Flash
Package
Clock Source
Temperature
  • GR8513NMBIN

    Cortex®-M4F

    69 MHz

    128 KB
    4 MB
    BGA121L
    26 MHz TCXO or 26 MHz DCXO/THX
    -40°C ~ +85°C
  • GR8513JMNIN

    Cortex®-M4F

    69 MHz

    128 KB
    4 MB
    QFN58L
    Only 26 MHz TCXO
    -40°C ~ +85°C
  • GR8513JMNID

    Cortex®-M4F

    69 MHz

    128 KB
    4 MB
    QFN58L
    Only 26 MHz DCXO/THX
    -40°C ~ +85°C

GR851x is targeted at a wide range of application scenarios, including smart meter, smoke detector, asset management, smart wristband, smart street lamp, bike sharing, scooter sharing, smart parking, pet tracking, livestock management.

Product Brief

Title
ID
Version
Date
Type
  • GR851x Product Brief
    PB-GR8-00001-EN
    Rev.1.1
    2021-08-18

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