"Honeycomb communication and WiFi, just like two masters on mobile devices. Enesthes to each other: One main chamber, one main outdoor. WIFI is the indoor coverage supplement of mobile networks, but also bear a lot of data traffic uninstallation, both want each Mountain is king, but it will become a full way to each other from time to time.
However, with the arrival of the 5G era, in consideration of 5G is comparable to the WiFi's transmission rate and the convenience of the coin WiFi covers the use of the use, there is such as "5g must dry off WiFi", "WiFi will sooner or later It was eliminated "," WiFi lives 5G era ", and all kinds of speech have ended. In a dispute, WiFi6 is late.
Not long ago, the Wi-Fi Alliance officially released Wi-Fi 6 standards, which will have faster bandwidth and more efficient maturity relative to the previous generation of Wi-Fi standards currently being widely used. Will WiFi6 have a 5G chamber to fight? Before talking about this issue, we need to make a full understanding of Wi-Fi6.
What is WiFi6?
The latest generation of WiFi6, using technical terms, is 802.11ax. At the beginning of October last year, Wi-Fi specifications were renamed, and the new standard 802.11ax was renamed Wi-Fi 6. At the same time, the previous generation of WiFi names also made changes:
802.11b - WiFi 1 (1999)
802.11a - WiFi 2 (1999)
802.11g - WiFi 3 (2003)
802.11n - WiFi 4 (2009)
802.11ac - WiFi 5 (2014)
Simply, that is, the previous WiFi naming is complex, cumbersome, and now naming is easy to understand. The biggest impact on our consumer is that after we buy a router, we only need to know that the larger numbers behind WiFi, the more advanced technology is.
It is understood that the latest generation of WiFi6 (802.11ax) is up to 9.6Gbps, that is, the theoretical transmission speed reaches 1.2Gb / s transmission speed. With the arrival of WiFi6, more sample applications, such as the Internet of Things, cars, to 4K video transmission, etc.
Where is WiFi 6?
01 full version of MU-MIMO technology
To explain where WiFi is amazing. We must first talk about the current mainstream WiFi 5 router. The lower side is a mainstream common dual-frequency router. Supports 300M bandwidth 2.4G band and 867M bandwidth 5G band - your device can only receive signals of one of the bands. At present, there are about 200-300, double-space stream (see four antennas, actually two pairs of antennas are repetitive signals, and the role of signal enlargement) This mainstream router home is basically enough. .
So higher-side routers, which is the same as its technology under the specifications of WiFi 5? We take the price of the Net Night Eagle R8000p in the price of thousands of yuan.
Its nominal AC4000 is only a bandwidth-curable value of three independent bands, namely 2.4GHz 750Mbps + 5GHz (1 way) 1625Mbps, but no matter how strong your terminal, it can only work At one of the bands, it is not possible to connect dual-band or three frequencies simultaneously to realize concurrent transmission.
And 1625Mbps bandwidth is required for 3 × 3 antennas, but most of the smartphones and tablets are only supported only 2 × 2 (for mobile devices, do too much WiFi antenna, volume, power consumption and heat dissipation Both of the problem) - that is, most wireless devices are connected to the Night Eagle R8000P can only get 541 Mbps * 2 = 1082Mbps bandwidth with the 867Mbps bandwidth of the three hundred routers described earlier.
Of course, the high-end route also has MU-MIMO functionality. Similar to this:
Be
The above figure is the signal transmission mode of the ordinary router and the high-end router signal transmission mode with the MU-MIMO function. This is also one of the selling points of the merchant sales of high-end routes. 4 * 4 Antenna router can transmit 2 × 2 laptop, 1 × 1 mobile phone A and 1 × 1 mobile phone B. However, the conditions that actually triggering this feature are very harsh: It is necessary to connect the device under the same 5G frequency band, and the device must support the MU-MIMO functionality. And the number of devices is just right to trigger. (MU-MIMO actual capacity is 2 to 3 terminals. Honestly, the two and three terminals are also congested ...) and the MU-MIMO function under WiFi 5 supports data down, so this is not It is worth paying the user's purchase of chicken ribs.
Therefore, the router of WiFi 5 is supported, no matter how expensive. The performance of the wireless part is that. Many of the MU-MIMO functions of WiFi6 have evolved in comparison - at least it is a full version that supports upward and down. And the maximum specific specification supported with respect to WiFi 5 is 4 × 4 MU-MIMO, WiFi 6 has 8 × 8 MU-MIMO, and can share up, downstream MU-MIMO packets at the same time. This will have a lot of scenarios.
02OFDMA technology
OFDMA should be an 11AX true black technology place. Simply put, OFDMA redesign the frame structure, divided into several resource units (RUs) to serve multiple users.
Use trucks to describe OFDMA technology, in the original OFDM technology (the scheme used in 11N / AC) is shipped by order. Regardless of the goods, it will send a car, and the empty carrier rate will be high. The OFDMA technology will aggregate multiple orders together. Let the truck be fully loaded. This makes the transportation efficiency greatly improve.
The difference between OFDMA and MU-MIMO technology
OFDMA: Suitable for parallel transmission of small packets, enhances channel utilization and transmission efficiency. Its state is stable and is not easy to affected by the terminal.
MU-MIMO: Suitable for parallel transmission of large data packets, enhancing the utilization and system capacity of multi-space streams. Improve the effective bandwidth of single users, but the operating state is not stable enough, it is easy to affected by the terminal.
03MCS (modulation and encoding strategy)
From a data perspective, the association rate of the single space stream 80M bandwidth is increased from 433 Mbps to 600.4Mbps, theoretical maximum association rate (160M bandwidth, 8 space flow) increased from 6.9Gbps to about 9.6Gbps.
Simplely said that the amount of data loaded by 11AX actually increases about 30%. Be
5g vs WiFi6
5G network, as the fifth generation mobile communication technology. 5G is more familiar with it in a long-scale propaganda, preheating and discussion. The theoretical bandwidth of 5G is 100 times the 4G network (the theoretical downstream speed 10Gb / s), as well as low-time delay and low power consumption characteristics. The upcoming 4G network is the next generation of communication networks. At present, the 5G communication standard has not been fully determined, only the EMBB scenario (large flow bandwidth standard) for 5G mobile phones has been determined. In the second half of this year, there will be a large number of mobile phone manufacturers to launch 5G mobile phones, and telecom operators will also launch 5G package for users to prepare.
There is also the standard of URLLC (low-delay communication) and MMTC (large-scale communication) in 5G technology, and the entire standard is fully passed on ITU (International Telecom Alliance), and it is expected to be around 2020. The three major operators in the construction of the 5G base station must also wait until 2020.
WiFi6 is compared to 5G looks low. On October 3, 2018, the WIFI Alliance will include the 802.11AX standard WiFi into a regular army and officially renamed WiFi6. The first two generations of technology - 802.11n and 802.11ac are named WiFi4 and WiFi5 respectively.
Compared to WiFi5, WiFi6 is more fast in terms of network speed and capacity. Not only that, WiFi6 also joined many users with multiple techniques (MU-MIMO) and orthogonal frequency division multiple access (OFDMA), making WiFi6 can also increase the multi-device capabilities at the same time. However, WiFi6 is currently facing with 5G - it takes time to spread. All the equipment in our hands must support WiFi6 protocols (including routers, mobile phones, wireless network cards, etc.), which can be truly used. The speed of the user update device, the time that WiFi6 is really popular is longer than 5G. About 5G and WiFi6 specific comparison no longer tap, a table lets you see 5g, wifi6 to see the bottom.
Table I
Where is 5G where to compete with WiFi6, complement each other?
In 2019, operators-based mobile connections (LTE and 5G cellular networks) and unauthorized wireless networks (WiFi6, or 802.11ax) will be close to each other in two main aspects: radio signal coding and resource scheduling.
These two wireless systems use the same method to compress more users and data into their frequencies, enabling each base station or wireless access point to communicate with more devices simultaneously. Although there is still many differences between the operators' wireless systems and unauthorized wireless systems, these differences are reflected in cost, infrastructure layout, and their management level provided by enterprise network operators, etc. aspect. These factors will determine how companies have planned around the reservation and addition of wireless features.
In an enterprise environment, WiFi6 and 5G are both competing and complement each other due to location, applications, and device types. Here are several examples of competition:
Be
Enterprises can purchase 5G small cellular equipment (small honeycomb tower) and deployed internally, providing 5G coverage for employees, slowly replacing WiFi with 5G.
Be
Be
Due to the continuous development of WiFi standards, the company will upgrade its wireless Internet device every 3-5 years. With 5G, these overhead can be outsourced to the service provider. Service providers will be responsible for regularly upgrading their wireless infrastructure.
Be
In some cases, 5G can add WiFi6 such as:
Be
In an enhanced mobile broadband (EMBB) case, the Client Device (CPE) can be connected to a 5G network to implement the Internet connection, and can provide connection services locally via WiFi6.
Be
Be
5G can supplement WiFi6 in a residential fixed wireless usage (for example, 5G home service launched by Verizon). With 5G, service providers can reduce their scheduling operations and enable customers to activate their Internet connection services through self-service mechanisms.
Be
Be
Even in the enterprise, WiFi has a higher penetration by supporting WiFi laptops and mobile devices. Although WiFi is eliminated from the mobile device and it is easier to delete WiFi from the laptop. In addition, it is much more cheaper than 5G networks in the enterprise. Enterprises launch WiFi6 time than 5G short.
Be
In addition to in the enterprise, future WiFi6 and 5G will have a change in roles, both due to fast speed, high bandwidth, etc., are also quietly changed. As 5G and WiFi6 are listed in 2019, the Internet of Things equipment will be designed to send more information only to consume less energy, which allows the device to always maintain online or connected. Various types of equipment may also begin to use SIM cards or embedded SIM cards to enable cellular features, which will change the current trend of WiFi devices.
Both WiFi6 and 5G use the resource more determined scheduling method, which is of great significance for automated manufacturing, medical, energy and other industry tasks key IoT assets. WiFi6 wireless access points will increase support for other radio technologies (such as Bluetooth and Zigbee), which will become more powerful Internet of Things gateways, even a useful wireless sensor to help track and manage devices.
It is worth noting that as an extension of LTE technology (and subsequent 5G technology), CBRS (citizen broadband radio) is said to be a complementary technology of WiFi6 for wireless connection inside the building. In the United States, CBRS uses frequent bands that are not used in the range of 3.5 GHz used by WiFi or existing LTE / 5G services, so it is unlikely to interfere with the general consumer access. Soon, some initial CBRS features will be commercialized. For robots, the CBRS will become the ideal supplement of WiFi6.
Of course, 5G technology has its own advantage over WiFi6. For enterprise IT, in WiFi is not ideal, 5G will be revolutionary technology, for example, if there are hundreds or even thousands of Internet of Thousands of Internet of Things equipment require wireless connection, in the building of our own, WiFi6 will It is a must-elevable wireless technology for connecting the Internet of Things. When the Internet of Things is transferred to the area other than the enterprise building, the sensor can still use 5G as a wireless transmission mode to obtain a connection with sufficient speed and reliability.
5G and WiFi6 allow the Internet of Things equipment to "live", and also changed the way we use the Internet of Things equipment.
Conclusion
5G replacing WiFi is not high, the opposite WiFi will continue to evolve and upgrade through 5G technology, 5G will coexist with WiFi6, complement each other in the future, and both in industrial production, Internet of Things, intelligence Many fields such as driving have a lot of application potential and imagination, helping all indigenous products out of new productivity.
Source: Terrace Media
Our other product:
