The field of mobile communications has a consensus that every 10 years will be a technology evolution.Global network in 2010 began construction in the world, has been developed for nearly 8 years, although in most people, 4G network has met our Daily life, but the communications industry is clearly not so that, 5G of technical research and standardization has long been quietly, the new changes are brewing.
Qualcomm announced at its 4G / 5G summit in Hong Kong that the world's first 5G data connection was achieved in the 28GHz millimeter-wave band based on the Xiao Long X50 5G modem chipset, along with the world's first 5G smartphone reference design , Based on Xiao Long X50 5G modem to build, is expected to be commercial in 2019.
Qualcomm for the first time to achieve 5G data connection, but also released the first 5G smart phone reference design, 5G is not active in the imagination of the future, but will come true reality.
Millimeter wave is the key technology
Looking at every communication technology iteration, the higher the network speed is undoubtedly the focus of the upgrade, 5G is no exception, its important business type is enhanced mobile broadband, to achieve gigabit network connectivity, with extraordinary data throughput Volume, for the future 4K, VR and other high-resolution real-time media transmission needs.
We know that wireless transmission to increase the transmission rate in general there are two ways, one is to increase the spectrum utilization, and the other is to increase the spectral bandwidth of the former for the channel requirements are more stringent, susceptible to noise interference caused by transmission error, the required The circuit will be very complex, resulting in a lot of power, which is obviously unbearable mobile phone, so increase the bandwidth of the spectrum has become the only choice.
But the problem also followed, now commonly used 5GHz below the band has been very crowded, where to find a new spectrum of resources? The industry invariably turn their attention to millimeter waves.
Millimeter wave as the name suggests, refers to the wavelength of electromagnetic waves in the order of magnitude, the frequency of about 30GHz ~ 300GHz between the industry that the 28GHz band and 60GHz band is the most promising to use in the two bands 5G, which 28GHz band available spectrum bandwidth Up to 1GHz, compared to the current 4G network only 100MHz available spectrum bandwidth, millimeter wave has a 10 times the upgrade, reflecting the advantages of the transmission rate is more obvious, is undoubtedly into the 5G key technology.
Qualcomm's millimeter-wave technology
Millimeter-wave has obvious advantages, but it is not easy to use it.With some high-spectrum resources, millimeter-wave has congenital deficiency, in the air attenuation is large, susceptible to weather environment, and the diffraction ability is weak , In order to change the status quo, Qualcomm invested heavily in this research, the introduction of intelligent beam search and beam tracking algorithm to achieve millimeter-wave mobile, even in non-line-of-sight (NLOS) environment, the use of millimeters Wave can still establish a stable and reliable connection.
Is not limited to this, Qualcomm in the 5G related technology on the accumulation can be described as strong, including ultra-large-scale MIMO technology, in the receiving end and the transmitter using multi-antenna design, data into the multi-input, the superiority of space to achieve the same time. , Qualcomm has a new adaptive TDD sub-frame design, can support dynamic uplink and downlink mobility, making the network more efficient and efficient.In addition, Qualcomm's leading LDPC encoding can withstand poor channel conditions, with high-speed low latency , Has been confirmed by 3GPP in the data channel of the 5G NR eMBB (Enhanced Mobile Broadband) scenario.
It is also because of these technical support, Qualcomm in the 28GHz millimeter-wave band to achieve a 5G data connection, to the 5G's formal business has taken a solid step.
The first 5G mobile phone is also Xiaoxiong core
The integration of many new technologies makes the connotation of 5G more rich, and its long-distance communication is not a simple communication, involving key business services, enhanced mobile broadband and mass networking business. Correspondingly, 5G mobile phone design is also facing Many challenges, including RF front-end, antenna, Modem and so on.
All Qualcomm has been prepared in advance, in October 18, 2016 launched the world's first 5G modem - Xiao Long X50 5G modem, you can use the 28GHz millimeter wave band to provide large bandwidth, combined with advanced signal processing technology to achieve 5Gbps Download speed is relying on Xiao Long X50 5G modem, Qualcomm to achieve the world's first 5G data connection, so that 5G is no longer just on paper.
Quanguo R & D experts Dr. Hou Jilei said, compared to the traditional mobile phone, 5G mobile phone design is mainly facing two problems, one is 5G (Figure), the first 5G smartphone reference design, High-speed network to bring additional power consumption, and the other is in a limited space how to achieve multi-antenna design.To overcome these two difficulties, means that Qualcomm for 5G smart phone technology has been fully mature accumulation, Qualcomm X50 Chip is expected to officially commercial, the first commercial 5G mobile phone has been getting closer to us.
Qualcomm partners to go to 5G
Over the past few years, Qualcomm has been involved in the 5G basic research and 3GPP standard development, has demonstrated the 28GHz mobile millimeter wave prototype system and 6GHz following 5G NR prototype, and actively with AT & T, Vodafone, China Mobile and other major global operations Business and network infrastructure vendors to carry out interoperability and OTA test, Qualcomm is to lead the industry chain to explore the direction of 5G to explore.
To sum up, Qualcomm has the most core 5G technology, its Xiaoxong core, LTE modems widely used in mobile terminals, coupled with the close deployment of operators, so that technology in a short time to achieve commercialization, which is Qualcomm to lead the development of the most core 5G In accordance with the plan, 5G will be in 2019 commercial, has been very close to the resulting great value, we enjoy the convenience of 5G at the same time, do not forget the efforts of Qualcomm and other partners.