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nb-iot，emtc，数据采集仪，物联网，5G终端模拟，LTE-M，protocol stack，release 13 ，release 14，可编程终端，雨量传感器，智能终端

Trending Products IoT Data Acquisition product Cellular IoT Protocol Stack Service About Us
NB-IoT Protocol Stack
Huachang technology aims to develop an ultra-lightweight, low-power, high-performance NB-IoT protocol stack product. Huachang has developed NB-IoT Access and Non-access Stratum of R13/R14, tested on host and ready for porting to target systems. Our protocol stack has been successfully ported to several platforms，such as ARM Cortex-M4、CEVA-X1、Cadence-F1,、VeriSilicon-ZSP etc. Its superior performance and maturity have been recognized by many domestic and foreign customers. In addition to excellent products, our flexible business model will definitely help customers to enter the NB-IoT chip market quickly.

Our advantages

Ultra-lightweight NB-IoT protocol stack， Code+Data<450kB

Independently researching and developing the software testing environment for protocol stack, with dozens of 2G, 3G, 4G projects experience, makes it stable and easy to use.

Low power consumption and excellent performance parameters.

All test items of the TS-36523 test protocol.

Independently developed ASN.1 and RoHC commercially used for many years， and optimized for NB-IoT protocol.

Clear AT command, USIM and physical layer interface accelerate the marketization process of customer chip.

The OS adaptation layer of the protocol stack can be quickly and easily adapted to the various operating systems that are required by the customer.

Years of experience in the protocol stack allows us to seamlessly connect to our customers.

Release 13 Feature Set
Control Plane CIoT EPS optimization
Data Plane CIoT EPS optimization
Support for both IP and Non IP modes of Data transfer
Support for both Attach with PDN Connectivity and without PDN Connectivity
Serving PLMN rate control
SMS
Support all narrowband system information blocks
Extended DRX cycles
PSM
RoHC
APN rate control
Release 14 Feature Set
2HARQ
Large TBS(CAT-NB2)
Multicast
Positioning
New Power class(14dBm)
eMTC Protocol Stack
Huachang technology will launch an eMTC stack product by the end of 2018. This product takes full advantage of Huchang’s 20 years of experience in protocol stack, creating an ultra-reliable, low-latency and ultra-low-power eMTC protocol stack for customers.
Base
2018-08 Script Verification
Integration Preparation
Alpha
2018-12 Script Verification
Integration Preparation
Beta
2019-06 Script Verification
Integration Preparation
Software products around the protocol stack
RTSS Software Products. 1）Ability to dynamically or statically display the status of the wireless protocol stack running.
2）It can optimize error detection from protocol stack software running，accelerating products development process.
RTSS (Real Time System Simulator) is the tool used on Microsoft Windows series platform, debugging and monitoring various embedded system software.
ASN.1/CSN.1 Coding & Decoding Software Products. 1，Unique ASN.1 text mapping data structure allows it to carry out efficient encoding and decoding.
2，Development by C language makes it easily portable and is supported by multiple platforms.
3，Simultaneously supporting multi-programs call the codec library reduces system spending’s.
Service for Protocol Stack
Providing GCF/PTCRB certification services
Providing custom protocol stack development services
Providing field test service
We provide the terminal and network side protocol stack software products
Product Series
Single Mode – Double Mode – Multi Mode Products.
LTE(FDD/TDD)
LTE-A
GSM
GPRS
EDGE
GSM-R
WCDMA
TD-SCDMA
5G Protocol Stack Product- coming soon.
Protocol stack product cooperative partner