5G New Radio (NR) is the global standard for a unified, more capable 5G wireless air interface. It will deliver significantly faster and more responsive mobile broadband experiences, and extend mobile technology to connect and redefine a multitude of new industries.
5G has the business world abuzz with its possibilities. It’s expected to provide the connectivity that powers everything from autonomous cars to humanoid robots to smart homes. According to research, 70 percent of companies plan to have 5G use cases in production by 2021, with public transport, safety, agriculture and energy leading the way. So what are some of the most compelling use cases ?
The 3GPP specification for 5G states that the first roll-out of 5G networks and devices will be brought under Non-Standalone (NSA) operation, which is to say that the 5G networks will be supported by existing 4G infrastructure. Thus, 5G-enabled devices will connect to 5G frequencies for data user plane but will still use 4G for control plane such as signaling.
Single Framework, Multiple Usage Scenarios
The new radio (NR) specification targets a single technical framework addressing all usage scenarios, requirements and deployment scenarios including for enhanced mobile broadband (eMBB), massive machine-type-communications (mMTC) and ultra-reliable and low latency communications (URLLC).
Enhanced Mobile Broadband (eMMB)
The first roll-out of 5G wireless network will focus on enhanced mobile broadband (eMBB) to provide higher data-bandwidth and connection reliability via two NR frequency ranges:
- Range 1 extends 4G LTE, from 450 MHz to 6,000 MHz. These bands are specified from 1 to 255 and this is mainly referred to as New Radio (NR) or sub-6GHz.
- Range 2 is at a much higher frequency 24,250 MHz (~24GHz) to 52,600 MHz (~52GHz). These bands are specified from 257 to 511 and this is referred to as millimeter wave (mmWave).
Fixed Wireless Access (FWA)
Mobile service providers can use 5G to deepen their customer relationships, and extend into the home and workplace:
- 5G enables home broadband, fast enough for gaming and high-definition video streaming.
- 5G can also connect small and medium sized businesses, giving them guaranteed reliability for their business-critical applications.
Smart Stadiums
Service providers can sell new 5G services to venues, enabling them to:
- Offer live 8K video from the pitch or the stage, with fans able to choose from multiple camera angles in real time.
- Show data overlays and stats about musicians or players on the audience’s mobile or wearable devices.
- Sell merchandise or additional services on the fly to customers using mobile devices.
- Support pop-up retailers with secure wireless connections for payment processing.
- Extend market reach, by offering the same live video and information feeds to fans who couldn’t get to the venue.
URLLC
- Improved latency
- Improved reliability
- Higher availability
- Higher security
The design of a low-latency and high-reliability service involves several components: Integrated frame structure, incredibly fast turnaround, efficient control and data resource sharing, grant-free based uplink transmission, and advanced channel coding schemes. In URLLC communications, < 1 ms latency is required to support demanding applications. That's why the designing of physical layer will be the most challenging thing as satisfying low latency and ultra-high reliability - two conflicting requirements at the same time is not an easy task. To fill this need , 5G NR introduces a flexible numerology to enable a wide range of frequencies and scheduling of diverse services that can be high throughput, low-latency, or even high latency for IoT applications.
To ensure that , a scalable sub-carrier spacing is introduced by 5G , it enables scalable slot duration so that more slots can run in less time. To support future low-latency, mission-critical applications, a mini-slot is shorter in duration than a standard slot and can start at any time without waiting for the start of a slot boundary.
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| 5G Possible Numerology |
Massive Machine Type Communication (mMTC)
Massive machine type communication (mMTC) also known as massive machine communication (MMC) or massive Machine to Machine communication is a type of communication between machines over wired or wireless networks where data generation, information exchange and actuation takes place with minimal or no intervention from humans. It is a sub-classification of machine type communication (MTC). mMTC deals particularly with wireless connectivity and networking amongst massive numbers (billions) of machines and is considered a key progression from the Internet of Things IoT to the Internet of Everything.
The development of mMTC is limited by the availability of the connectivity necessary to support vast numbers of machine to machine interactions. This type of communication is typically via small data packets which are not optimally supported by the cellular networks designed for human communication. Such networking would have to be secure, reliable and consistently scalable with high capacity and low latency to support a range of communications at varying frequency bands. mMTC also needs to have low cost and energy consumption with the penetration needed to function effectively in dense urban or indoor environments.
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Merci :)
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