Redcap is ready to come out. It is indispensable to build a "meta universe"

Meta universe （Metaverse） It is a new type of technology produced by integrating a variety of new technologies 、 Internet applications and social forms that integrate virtual reality , It provides an immersive experience based on extended reality technology , Based on digital twin technology to generate the mirror image of the real world , Build an economic system based on blockchain technology , Integrate the virtual world with the real world in the economic system 、 Social system 、 Close integration on the identity system , And allow each user to produce content and edit the world .
The meta universe itself is not a technology , It's an idea and concept , It needs to integrate different new technologies , Such as 5G（ Even 6G）、 Artificial intelligence 、 Big data, etc , Emphasize the integration of virtual reality . One of the foundations of the metauniverse is shared data 、 Shared computing and shared bandwidth ,5G Provides the speed and ability to make the digital world work properly , To support the sustainable development of the meta universe .
as everyone knows ,5G It is divided into three application scenarios , Namely eMBB（ Enhanced mobile broadband ）、URLLC（ Low delay and high reliability communication ）、mMTC（ Massive Internet of things communications ）.eMBB yes 4G Time MBB（ Mobile Broadband ） The upgrade , It mainly focuses on network speed 、 Bandwidth capacity 、 Spectral efficiency and other indicators . Currently we use 5G Mobile communication , Belong to eMBB scene . and URLLC and mMTC, The former focuses on delay and reliability , The latter focuses on the number of connections and energy consumption . Both are mainly serving the Internet industry , Including industrial manufacturing 、 Vertical industries such as Internet of vehicles .

Ministry of industry and information technology data show , By 2021 year 8 End of month , China has built 5G Base station over 100 m , Occupy the whole world 70% above ,5G The number of terminal connections exceeds 4 Billion . Sports and entertainment 、 Live broadcast of the event 、 Residential services and other consumer areas 5G Applications accelerate exploration , manufacture 、 mine 、 Medical care 、 Vertical industries such as ports 5G The application mode is becoming clearer and clearer , Digitization in the real economy 、 Networking 、 Intelligence has played an important role in the process of transformation and upgrading .
5G Even if there are broad prospects , But its application pain points also need to face ： Cost ratio 4G/4G Cat-1 A much higher , This is an important factor affecting its wide landing . So ,3GPP R17 The standard introduces 5G Redcap（ Streamline chip standards ）, And use it as a high-performance eMBB and URLLC Standard and low-end mass Internet of things （NB-IoT、LTE-M） Standard coexisting medium speed standard , No, 5G RedCap,5G NR There is a lack of key technologies of the Internet of things .
5G RedCap, The full name is 5G Reduced Capability, Chinese meaning “ Reduce capacity ”. It is 3GPP stay 5G R17 Stage , A new technical standard specially established for research . Previously known as NR-lite、NR-light Or industrial wireless sensor networks (IWSN) . stay 3GPP After project approval , Officially renamed “5G RedCap”.
R17 Stage RedCap Mainly for three business scenarios , Wearable devices 、 Industrial sensors and video surveillance . For the needs of these three business scenarios , The following targeted improvements have been made ：
 Reduce device complexity , So as to reduce the equipment cost
 Including reducing bandwidth 、 Reduce the number of antennas and MIMO The layer number , Relax the modulation order 、 introduce HD-FDD etc. .
 Improve power consumption
 Including introducing... In idle state eDRX And adjacent areas RRM Measure relaxation
 The data transfer rate and supported scenarios are different from LPWA Standard overlap .
 R17 Stage RedCap Of DL The rate is at 150Mbps(2Rx) and 75Mbps(1Rx) about .
With smart watches 、 motion / Health bracelet 、 Smart wearable devices represented by smart glasses , With the help of a variety of sensing technologies 、 Identification and display technology , Information exchange with human body , It is an intelligent device based on mobile Internet , Application in life and entertainment 、 A wide range of fields such as medical and health .

In the meta universe , Intelligent wearable device is the node closest to human body , Is a very important role in the transformation of virtual reality .5G RedCap Import of , Effectively solved 5G Communication requirements and endurance requirements of intelligent wearable devices . and 5G Equipment comparison ,5G Redcap Lower cost of equipment 、 A smaller 、 Lower energy consumption . and 5G Redcap Network rate （ Up and down 50M/70Mbps） It can also cover most of the requirements of wearable devices .
3GPP R17 Will be in 2022 year 6 The month is frozen , and 3GPP Is working on R18 Discuss and add new 5G RedCap function ：
 R18 Will further reduce RedCap Data transfer rate of （ The target rate is 10Mbps about ）.
 Relax processing and further reduce the delay RedCap The characteristics of complexity will be based on R18 RedCap The results of the research project .
 Further refinement RedCap Energy saving mechanism （ Introduce... In the inactive state eDRX）, And introduce lower power levels .
Zhanrui has been actively promoting 5G The development of and the implementation of new standards , Just 5G RedCap Standard contribution , In this year 10 month 20-29 Day at the 3GPP At the project discussion , Zhanrui joins hands with industrial chain partners , Successfully promote smart grid application scenarios as Rel-18 RedCap One of the target expansion scenarios , Written Rel-18 RedCap Project draft . This is a 5G-Advanced A key step in deepening the evolution of smart grid applications , by 5G+ The application of smart grid has laid a solid foundation for standards .