What is LTE Cat M1 and how is it different from NB-IoT?
What is NB-IoT?
Narrowband IoT (NB-IoT) is also known as LTE Cat NB1 also as a technology with Low Power Wide Area (LPWA, Low Power Wide Area), which has been developed and designed to connect various teaching devices to the Internet in China by using an enterprise's existing mobile communication network. Narrowband Internet of Things lpwa standard(NB-IoT) has been developed and produced to support our implementation of Internet of Things (IoT) applications. It is designed to be a low-power, narrowband information technology that can be handled in an efficient, secure and reliable manner along with a small amount of bi-directional selective data analysis transmission.
Narrowband IoT (nb-iot) technology operates using existing lte networks or lte carrier-protected blocks of spectrum resources. It can also use 200 kHz of bandwidth spectrum previously used by gsm but not currently in use.
The B-IoT specification was frozen in June 2016 in 3GPP protocol specification version 13 (LTE-Advanced Pro) (i.e. 3GPP Release 13). According to the definition of Release 13, the technical specifications of NB-IoT are as follows:
Downlink peak data rate: 250 kbps
Uplink peak rate: 250 kbps (multi-tone) and 20 kbps (monotone)
Latency: 1.6 to 10 seconds
Duplex technology: Half-duplex
Equipment receive bandwidth: 180kHz
Device carries transmit signal power: 20/23 dBm
NB-IoT key technology features
Nb-iot is one of the more popular lpwa technologies available for internet of things (iot) applications. It offers the right combination of features. Low frequency narrowband spot signals have long distance propagation through walls and metal conduits. Power requirements are low, and a single battery-powered device can last more than 10 years. Its data transmission rate is just right for meter readings, street light control, parking space monitoring, industrial data monitoring, and a number of other low data transmission rate applications.
LTE Cat M1 is an LPWA low-power wide-area cellular technology designed for Internet of Things (IoT) and machine-to-machine (M2M) communications. It was developed for low to medium data rate applications that support upload u002F download data rates below 1 Mbps and can be used in half or full duplex mode.
LTE CAT M1 uses information from an enterprise's existing LTE network for management operations, but we differ from NB-IoT (which uses unused spectrum resources or the company's spectrum analysis located in the environmental protection band for actual operations) in that LTE CAT M1 works in the same LTE band as is used for teaching in cellular data applications. One of its advantages is that it has the ability to switch between China's development from one cell site to another, which allows students to use the technology in mobile Internet applications; whereas NB-IoT does not allow switching from one cell site to another as well as mobile, so they can only be used primarily to enhance fixed asset applications, i.e., applications that are limited to areas covered by a single cell site .
Since LTE Cat M1 technology can coexist with 2G, 3G and 4G mobile networks, it offers the benefits of all the security and privacy features of mobile networks, such as support for user identity confidentiality, entity authentication, secrecy, data integrity and mobile device authentication capabilities.
The latest lte cat m1 specification was published in June 2016 in 3gpp version 13,
was approved. The technical specifications of LTE CAT M1, as defined in Release 13, are as follows:
Deployment: LTE band in-band
Downlink (downlink) peak carry data rate: 1 Mbps
Uplink peak data rate: 1 Mbps
Delay time: 10-15 ms
Duplex communication technology: full duplex or carry out half duplex
Transmit power level: 20/23 dBm
Key features of Lte cat m1
The commercial network release of LTE CAT M1 is expected to take place in 2017.
Based on the definition of 3GPP Release 13, the following table analyzes and compares the key technical specification issues of NB-IOT and LTE CAT-M1