The 3GPP organization proposed the technology of Machine Type CommunicaTIon (MTC) in the 3GPP R12 standard, which is equivalent to announcing the entry into the public IoT market. This is also called Low-Power Wide Area Network (LPWAN). In the R12 version, terminal devices such as Category 1 and Category 0 are also proposed to support MTC.
The 3GPP organization proposes a machine-type post-communication technology in the 3GPP R12 version of the standard, which is equivalent to announcing entry into the public IoT market. . .
However, the R12 version of the technology has a strong over-color, although Category 1 can be compatible with existing LTE base stations, but the transmission rate is higher, more power-hungry, higher cost, and the cheaper, more power-efficient Category 0 can not Fully compatible with existing LTE base stations.
Therefore, the industry will turn to the next-generation standard, 3GPP R13 (commonly known as LTE Advanced Pro), which will establish Category M (also known as Cat-M, or Cat-M1) and NB-IoT (Narrow-Band Internet of). Things, or Cat-NB1), a lighter-weight terminal device type, Cat-M reduces bandwidth occupancy to 1.4MHz and NB-IoT to 200MHz.
Cat-M dropped to 1.4MHz, its uplink and downlink rates are still 1Mbps, but only 200kHz NB-IoT will drop to 200kbps downstream and 144kbps upstream. Although two new types are proposed at the same time, the industry mostly cares about NB-IoT, and thinks that Cat-M is still an excessive standard.
According to the previous example, NB-IoT must wait until the entire 3GPP R13 bottom timing, along with the entire 3GPP R13 standard, but this time, in reverse, 3GPP announced on June 22, 2016 that the NB-IoT standard has been completed. Entered and posted at http://
Why do you want to announce it separately? Do you not jointly announce the multiple proposal standards in the past? The author speculates that this is related to the fact that too many LPWAN standards have been launched on the road, such as LoRaWAN, Sigfox, Weightless, etc. There are more than 10 kinds of technologies in the forest.
These LPWAN technologies that target the same market objectives as LTE MTCs, most of which are alliance technologies established by a small number of operators, or exclusive technologies of individual operators, will be promulgated and quickly deployed without waiting for a vote, and will be commercialized immediately after trial. Opening, even the price of commercial solutions is quite attractive, each sensor node only receives an annual fee of 1 US dollar, but the minimum is 10,000 nodes, and the country opened has also crossed many countries. Some operators have announced that more than 20 countries have opened.
Under the rapid execution of alliance technology and exclusive technology, some telecom operators have given up waiting for NB-IoT. In order to let the waiting customers have confidence, 3GPP has issued “completed NB-IoT technologyâ€. The 3GPP also stated on its own that this technical proposal completes the standardization in only nine months after leaving the study phase, which indirectly shows the urgency of shaping the standard.
In addition to using the "NB-IoT standard has been completed" to stabilize the military mind, in fact, 3GPP also sacrificed two points at the same time, one is to strengthen the previously issued MTC, the new version is called eMTC, the past 3GPP often has such enhanced strengthening, For example, there are eMBMS after MBMS and eICIC after ICIC.
The other is to propose an extended coverage version of the GSM technology called Extended Coverage GSM (EC-GSM-IoT). With this technology, the existing GSM (2G) base station can be more suitable for IoT applications. The same GSM base station can have a larger communication coverage area and support more GSM terminal node communication. (In fact, before the EC-GSM-IoT was proposed, the Intel research department used the GSM mobile phone that was abandoned. After the modification, it was tied to each trunk and used the communication method to alert and prevent forest fires.)
In fact, 3GPP R13 and NB-IoT advertise that their signal strength is higher than that of GSM. The implication is that telecom operators do not want to use the original GSM deployment to provide IoT services, and it is expected to switch to 3GPP R12/R13.
However, in the case of alliance technology and exclusive technology, if the telecoms still do not accept NB-IoT, 3GPP still has to provide its own filing technology power supplier selection, which is EC-GSM-IoT. The 3GPP's implementation of EC-GSM-IoT can still leave telecom operators in their own technology (although it is an old version of technology), instead of embracing the technology of other camps.
In view of this, not only is the Bluetooth SIG eager to use the BLE technology card for the Internet of Things, but in November 2015, there will be a technical upgrade in the current (2016) year, that is, Bluetooth 5, which has recently been officially renamed, and even 3GPP is eager to use it. The LTE technology card is the Internet of Things, namely NB-IoT. Such technical announcements and advance notices may not stop in the short term.
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