"What does it mean for Moby to select EMTC + Nb IOT + 2G multimode module on the shared bicycle smart lock?
Zhao Yu / Wen
On May 23, the first multi-mode outfield test of EMTC / Nb IOT / GSM (LTE cat M1 / NB1 and e-gprs) was launched in China, which has different significance for operators, vertical industries, upstream and downstream of IOT industry.
MoBay's participation in the field test of multi-mode LTE IOT is the only way for sharing bicycles to move towards globalization, which shows that moBay is accelerating the international layout and is no longer limited to serving the last kilometer of domestic traffic.
With the global commercial scale of EMTC / Nb IOT, why does Moby give priority to targeting the North American market in the international market?
Mobai: need international "big connection"
TTM (time to market) is an element that European operators attach great importance to when commercial NB IOT. It is not difficult to understand why China Telecom, which has the world's largest NB IOT network, will invest billions of yuan in subsidies to reduce the cost of Nb IOT modules as soon as possible.
However, TTM is also valued by moBay in the development of the international market, but the pain points are different.
Recently, Moby has signed contracts with partners such as China Mobile, China Unicom, Qualcomm, Ericsson and Huawei, which means that Moby is upgrading its mioT scheme.
At present, the cellular IOT systems of countries around the world are different. For example, Verizon and at & T are commercial EMTC in the whole network of the United States; China Telecom, China Mobile and China Unicom will soon commercialize NB IOT and EMTC in the future, and China Mobile also has a 2G boutique network; In Europe, mainstream operators such as Vodafone mainly choose NB IOT for commercial use. Vodafone expects that six subnets will be commercial NB IOT this year.
However, Xia Yiping, co-founder and CTO of Moby bike, is puzzled that each operator has different technology selection and development direction. How to maintain the consistency of Moby products under many different circumstances, and even ensure the flexibility of Moby bike production, shipment and delivery?
"If moBay enters the overseas market in the future, different operators and different systems need to adopt different modules, which means that the cars sent by moBay to cities all over the world every day need to be classified."
How to enter any city in the world without the second integration and development is Xia Yiping's proposition to be solved, not only the iteration of hardware, but also the iteration of software and platform?
Now, moBay is no longer a simple bike sharing company. MoBay operates more than 4.5 million shared bicycles in more than 80 cities and generates more than 5TB of data every day. "We hope to make the connection of the Internet of things into a global large connection, not a small connection in each country".
So, what factors are considered when Moby bike participates in multi-mode LTE IOT outfield test:
1. Considering network coverage, network roaming, module cost and industrial chain maturity, 2G access is more suitable for the development of shared bicycles at this stage;
2. NB IOT theory has low power consumption and good penetration. Therefore, moBay has been involved in the R & D and testing of Nb IOT products for a long time. However, it will take a long time for the whole network to deploy NB IOT until it is optimized and the industrial chain to follow up;
3. The scenarios of Nb IOT and EMTC applications are different. NB IOT is more suitable for meter reading and other services. There are some challenges in deploying NB IOT on shared bicycles. The handover and power consumption of base stations are not much better than 2G, nor better than EMTC. EMTC's global business is going fast. Due to EMTC's full network coverage in the United States, Moby considers giving priority to entering the U.S. market.
4. Considering the network delay, base station handover, power consumption and other factors, shared bicycles are more suitable for EMTC applications, but shared bicycles do not require large bandwidth. From the perspective of bandwidth supply and demand, sharing bicycles does not require 1Mbps rate, and EMTC does not seem to be suitable for sharing bicycles.
Therefore, Nb IOT and EMTC are complementary + 2G and combined with ESIM to meet the multi scenario application requirements of moBay.
5. Compared with the cost of $20 for 3G module, the cost of multi-mode LTE IOT module will be halved through large-scale commercial use. When the multi-mode cost is very low, it will bring benefits to the production, operation and future development of Moby bike.
Xia Yiping believes that the multi-mode cellular Internet of things module will make Moby bike suitable for 2G / Nb IOT / EMTC connection technologies both at home and abroad, and minimize the commercial risk. However, some operators believe that in the domestic market, Moby's support for EMTC + 2G is enough, and Nb IOT is redundant for Moby bicycles.
Multimode LTE IOT adapts to China Mobile's "big connection" strategy
China Mobile has a long accumulation in the Internet of things. China Mobile not only has 1.55 million 4G base stations, but also more than 1.09 million 2G base stations, providing the most mature and perfect Internet of things capability through 2G. At present, China Mobile is pragmatic and actively preparing for the commercial application of Nb IOT and EMTC in the future.
China Mobile first cooperated with the industry to promote the formulation and final formation of Nb IOT standard, and completed the world's first end-to-end interworking based on standard NB IOT, the first end-to-end laboratory verification, and outfield verification. In the first phase, China Mobile will build NB IOT network to realize the characteristics of low cost and low power consumption.
While promoting commercial NB IOT, domestic and foreign operators are also testing EMTC. On the basis of Nb IOT narrowband, EMTC further improves the rate and supports certain voice capabilities. China Mobile is also the first operator in China to carry out end-to-end interworking of EMTC. China Telecom and China Unicom have not given up their commercial planning to support EMTC.
Relevant people of China Mobile believe that for China Mobile, they hope to provide customers with a multi-mode solution, where the terminal can be connected to the Internet, so as to meet the needs of customers for extensive coverage.
In China, the field test of multi-mode cellular Internet of things also reflects the demands of China Mobile's "big connection" strategy. Facing the large market, large network, large capacity and large coordination, it starts from many aspects such as connection scale, service and application:
1. Among the massive Internet of things connections, China Mobile has made a special analysis. Not one technology can meet all Internet of things applications. Customers' needs are diverse. For example, the demand for large bandwidth needs to be met by the existing 4G or even the future 5g. In other words, including but not limited to commercial cat. 1, Nb IOT and EMTC, as well as 5g IOT in the future, are one of the connection technologies for the development of cellular Internet of things;
2. In the past, local IOT technology was difficult to meet the needs of many customers. The advantage of cellular IOT is that it can connect IOT terminals anytime and anywhere. Combined with the operator's high security, high performance, high reliability and carrier level service capabilities, it can provide customers with more reliable Internet services;
3. The cellular Internet of things is a global standard technology, and the industrial scale is very large. The advantages of the cellular network can be fully copied into the Internet of things, which can meet the international roaming business needs of the global Internet of things terminals;
4. Although NB IOT has the advantages of low cost and low power consumption, it takes time to build NB IOT network covering the whole country. Therefore, China Mobile has more than 1.09 million 2G base stations, which can provide customers with the most basic connection guarantee where NB IOT coverage is not yet available.
The above people believe that Nb IOT and EMTC are Internet of things application solutions for very low, medium and low speed, which are widely supported all over the world. They are very important Internet of things technologies for future evolution to 5g.
At present, China Mobile has started LTE IOT multi-mode testing, not only to meet the needs of users from a technical point of view, but also to jointly promote the support for general modules and module standardization from the network side, so as to meet the application needs of multiple scenarios, so as to reduce the threshold access and drive the improvement of user value. Just like the deployment of TD-LTE network at all stages, China Mobile leads the industry to improve the supported system, frequency band, voice mode, carrier aggregation and other connection capabilities through its own terminals.
The above-mentioned people pointed out that in the past, the Internet of things was a very fragmented market. There was no standard to keep the size, interface and pin number of each module consistent. It was difficult for end users, such as refrigerators, color televisions and water meters, to choose from a variety of solutions like mobile phone chips or PC chips, so it was difficult to form a scale effect.
"After we generalize the modules, the module manufacturers can adapt to large-scale scenarios after developing several types of general modules. After the modules are scaled up, the cost can be reduced in all aspects, which plays a very good role in promoting the industry."
Previously, it was rumored that the three operators would jointly build NB IOT general modules for multiple scenarios.
Qualcomm: promoting a number of Nb IOT chips in 2018
As one of the participants in LTE IOT multi-mode field test, Qualcomm currently ships more than 1 million IOT chips to the market every day, supporting IOT terminals covering different use scenarios, including cameras, UAVs, smart watches, etc.
At present, Qualcomm has launched a multi-mode chip mdm9206 that supports NB IOT + EMTC + 2G and will be applied to the smart car lock of Moby bike. The integrated global navigation satellite system (GNSS) supports positioning function. Users can quickly find idle bikes, speed up the unlocking speed of smart lock, and continuously monitor and manage the status of bikes in real time. More importantly, big data is used to improve the ability of last kilometer travel, single vehicle management (electronic fence, effective delivery) and social traffic management.
For the cellular Internet of things, Li Weixing, vice president of Qualcomm Technology, believes that the scale popularization in a short time needs to grasp several key points:
1. Minimalist design to control the complexity within the controllable range;
2. Extremely high energy efficiency, attention must be paid to battery standby and power consumption during its use;
3. Extremely wide coverage. Take the water meter as an example. The water meter is buried underground. It is required that the current base station should not only support voice and mobile data services to meet public needs, but also support Internet of things access. This must be considered at the beginning of design;
4. Large scale, relying on the economies of scale of the market to reduce costs.
"EMTC and Nb IOT have their own advantages and disadvantages. Using a single technology alone may not be able to meet all possible use scenarios.". NB IOT is not sensitive to delay; High requirements for low cost; Data traffic is very low. EMTC has better support for high reliability and mission critical services, and is more suitable for delay sensitive scenarios, such as building security, wearable devices, intelligent tracking, asset tracking and key infrastructure.
Li Weixing said that through the software carried by mdm9206, it supports different use scenarios according to dynamic configuration. A set of RF supports 15 different LTE bands to meet the bands owned by most operators. Through the development and use of EMTC and Nb IOT on 4G platform, Qualcomm will support the massive Internet of things gradually evolving to 5g NR in the future.
The more exciting news of Nb IOT industrial chain occurred on May 26. On the occasion when Datang Telecom, Qualcomm and Lianxin signed an agreement to establish a joint venture Lingsheng technology, Cristiano Amun, executive vice president of Qualcomm and President of QCT, disclosed to comobs that in 2018, "Qualcomm will launch more than one chip supporting NB IOT technology and expand our product portfolio for the Internet of things".
Amun did not deny the previous market rumors that Qualcomm will launch a very low-cost single-mode NB IOT chip, which means that Qualcomm will launch at least two LTE IOT chips containing Nb IOT in 2018, one of which is likely to be a single-mode NB IOT chip.
While China technology mobile phone is one belt, one road is designed and sold in China, which will be extended to the low and middle end smart phone chipset. It will extend to the areas such as IoT and automotive electronics, and will serve the "one belt" market along the way.
Amun believes that M2M and IOT are markets with great potential in the future, including EMTC and Nb IOT. According to relevant sources of Datang Telecom, including Lianxin, it will cooperate with Qualcomm in the fields of Internet of things and 5g.
Original link: https://www.eeboard.com/news/lte-iot/
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