IT168 Review In the past two years, the number of 4G users in China has shown explosive growth and has exceeded 646 million, accounting for half of the total number of mobile phone users. 4G networks have become fully popular. Entering 2016, operators have continued to make efforts in infrastructure construction, leading the further development of 4G. Technologies such as 4G+, VoLTE and carrier aggregation have gradually entered our lives, all of which are announcing the arrival of the post-4G era.
The post-4G era has requirements for greater data traffic, more efficient links and faster network speeds, which has put forward new requirements for mobile phone terminals, especially Modems (modems), how to fully support them Cutting-edge communication technology has become a problem that must be faced. In order to solve this problem, Qualcomm proposed the concept of "Snapdragon All-Network". What exactly is "Snapdragon All-Network" and what is the difference between it and the "All-Network" mentioned by ordinary OEM manufacturers? The following will further help you interpret it.
What we usually mean by "full network access" is just a consumer-level concept, which means that mobile phones support a wide range of frequency bands and are compatible with the network standards of the three major domestic operators. "Snapdragon All-Network" defines the concept of All-Network in a more comprehensive dimension based on the usual meaning. Specifically, Qualcomm defines the concept of "Snapdragon All-Network" from five dimensions: global global full-band, full dual-SIM, full 4G+, full voice and full Wi-Fi. Focusing on these five dimensions, we will explain below.
Global full-band: worry-free multi-band travel
Usually all Netcom can support six modes, but the support on the frequency bands is not consistent, such as China Unicom and Both Verizon and Verizon operate LTE-FDD networks, but the operating frequency bands are different. This has led to the emergence of many domestic full-net mobile phones that although the standard is supported, they cannot be actually used abroad. For example, some terminals that claim to be fully connected to the Internet directly lose 4G signals after being launched in many countries. This is due to the lack of support for the 4G frequency band. In addition to supporting all domestic frequency band networks, Snapdragon Full Netcom also supports all network frequency bands certified by the 3GPP organization and carrier aggregation between each network frequency band, so that one mobile phone can truly connect the world.
Full dual-SIM: free switching between primary and secondary SIM cards
Dual-SIM dual-standby is very popular in the domestic market and has gradually become a standard feature of mobile phones. But dual-SIM dual-standby is far more than just plugging in both cards and having signals. Earlier dual-SIM dual-standby only supported China Telecom card as the main card, and China Unicom as the secondary card could only stay on the 2G network. Later, it gradually developed into dual-card blind insertion, but when the main card is a 4G network, the secondary card is still a 2G network. At present, Snapdragon Netcom supports all dual cards. When the main card stays on 4G, the secondary card can support China Unicom 3G voice calls. The advantages brought by this are obvious, especially in some areas, China Unicom's 3G WCDMA network voice calls have higher quality than the GSM network in some areas, and the calls are more stable and reliable.
Full 4G+: carrier aggregation for smooth Internet access
China’s operators are currently vigorously promoting 4G+ networks. China Mobile, China Telecom and China Unicom have all deployed corresponding equipment to support 4G+, especially China Mobile's base station 4G+ network is basically mature. 4G+ undoubtedly brings users a smoother mobile Internet experience. Its core technology is carrier aggregation, which increases system transmission bandwidth by simultaneously utilizing multi-band resources.
All Snapdragon Netcom products support carrier aggregation. Taking the Snapdragon X12 LTE modem as an example, it supports up to downlink Cat.12 (600Mbps download bandwidth) and uplink Cat.13 (150Mbps upload bandwidth). You must know that the current operator infrastructure only supports Cat.6. If the operator increases the 4G+ speed again within one or two years, users using the Snapdragon X12 LTE Modem can update the software through software without having to update the hardware terminal. and other ways to enjoy the latest technological achievements. This shows that Qualcomm Snapdragon has strong technological foresight and serves as a benchmark in the industry.
Full voice: VoLTE supports high-definition calls
The most basic function of mobile phones is still voice calls, and VoLTE has become a hot technology at present. All Snapdragon Netcom products fully support VoLTE.
VoLTE's full name is "voice over LTE". As the name suggests, it implements calls on the LTE network, thus solving the problem of signal falling back to the 2G network during calls. With the gradual completion of infrastructure, major operators are currently promoting the VoLTE service, which can effectively improve call voice quality and reduce call delay.
In addition to supporting VoLTE, Snapdragon Netcom is also involved in Wi-Fi calling. Current market trends believe that the integration of LTE and Wi-Fi will become a reality. Taking North American operators as an example, they are deploying Wi-Fi calling and VoLTE at the same time. Snapdragon full network products can automatically switch between the two according to actual conditions. Make a choice between the two and achieve seamless switching between the two.
Full Wi-Fi: Easy connection without waiting
Wi-Fi frequency bands are mainly divided into 2.4GHz and 5GHz. This dual-band Wi-Fi has gradually become popular at present. In addition to supporting the above frequencies, Snapdragon full Netcom products also support 802.11ad, which is Wi-Fi in the 60GHz band. This technology can expand the bandwidth to an astonishing 7Gbps. Such a fast connection speed can be applied to data exchange between devices, without the hassle of waiting and lags. In addition, MU-MIMO congestion-free Wi-Fi technology is also supported accordingly, achieving faster Wi-Fi connections and a smoother mobile Internet experience. Its theoretical speed is 3 times faster than traditional Wi-Fi speed.
In order to meet the needs of different OEM manufacturers and terminals, various series of processor chips under Qualcomm Snapdragon have varying degrees of support for Snapdragon Netcom, including Xiaomi, vivo, OPPO and Samsung. corresponding products. With the advent of the post-4G era, powerful performance has been fully recognized by consumers through various mobile terminals. In the future changes in the 4G network market, Snapdragon All-Network will surely prove its excellence through its excellent experience. Technology leadership in the market.