Hierarchical access processor
To welcome the upward trend of 5G, the NXP provides a programmable baseband processor for 5G access edges. Programmability brings flexibility to allow these chips to support continuously developing standards and deployment models while promoting interoperability. These new layered landscape access processors extend our Layerscape Access La 1575 devices.
Two and a half ago - new processors. The first Layerscape Access processor still tries to extend the hardware life cycle by implementing incremental upgrades through software, thus thoroughly changing the network economy. To this end, its key features are programmable: applications, second layers, and physical layers. This chip has caused interest in developing wired and wireless systems. After all, communication technologies from the telephone line-based G.fast to wireless 5G depend on the OFDM of the physical layer. However, for production, customers need to reduce their demand processors to reduce costs.
Therefore, we are very happy to introduce our new Layerscape access processor LA 9350, LA 9310, and LA 1200 families. Like LA 1575, these new devices have programmable speech and control functions. Unlike their predecessors, they leave the application to external hosts, such as the Layerscape LS1 or LS2 processor. Different systems can use these programmable processors. Some of our most exciting goals are in 5G access.
Programmable baseband for open intelligent 5G
The 5G era has brought some changes to the entire industry and the wireless access network (RAN). Promoting the industry's change is the O-RAN alliance, the organization consists of open and intelligent operators focusing on 5G technology. The purpose of open is to facilitate a network consisting of interoperable equipment from multiple vendors. Although telecommunications technology is standardized, the standard has left enough space, that is, the service provider uses the same supplier in the entire area to avoid compatibility issues. The alliance is committed to mixing and matching the equipment and replacing the supplier's proprietary hardware to a general purpose device. Not too subtle goals are to increase their capital cost to 5G.
Intelligence is to reduce operating costs. Wireless networks become more complex, increasing the location of the cell, meeting a broader demand. By adding intelligence, the network can allocate radio resources and manage your own operations in other ways. Therefore, the device must be flexible. It must also be programmable to inject its intelligence to run software.
The O-RAN Alliance is also a change in the RAN structure. The 5G standard uses an unusual approach, not only defining a system to implement baseband functions, but also define different methods of eight logically divided into these features. The Alliance is based on such a method: Radio Unit (RU) implements radio frequency transceivers and lower baseband PHY functions, distributed unit (DU) performs upper PHY PHY and media access functions, and the central unit (CU) performs higher layer protocol, user, and control planes The CU is logically separated. A key challenge is that DU and CU have standard Linux features. ® Computer and Real Time Systems. In addition, although these three units are logically separated, they may be physically bonded in different arrangements. These three can be in the same system with the traditional base station, and the RU and DUs can merge. A DU can be multiple RU services, and the CU can be a separate system, or CU can be a virtual machine in a remote data center. . This diversity further proves that there is reason to adopt an open and flexible approach.
Other structural changes include large-scale MIMO (64 or more transmitters and receivers) and the medium IMMO (approximately 16 transmitters and receivers), which requires the low base MIMO phase. Additional processing is performed in the RU, and the 24 GHz-100 GHz millimeter wave (MMWave) band is open, and these bands narrow down the size of the cell due to poor propagation ability. Service providers are also using 5G faster speed, which requires new fixed wireless access (FWA)-real estate equipment as a substitute for wired broadband. There are also discussions on private 5G networks that use 5G technology as a local area network operation. Operators have always worried that the consumer's home network can fully deliver the operator to the home data to the individual equipment.
Titled landscape access horsepower for improving millimeter wave applications
In NXP, we know that the LA 1575 system on the chip has a composition technology that solves the complex problems caused by these changes, but we must re-adjust the performance and cost of these components. Some applications require stronger signal processing capabilities, while other applications require fewer signal processing capabilities. The LA 1575 is designed to handle relatively complex 802.11 (Wi-Fi). ®) MAC features and packet processing, our new goal will require fewer horsepower for the second layer and control tasks. We extend resources for these tasks accordingly. The requirements for the arms have changed the complexity of CCPU. We have eliminated it, replaced by providing high-speed I / O to our LayerscapE family based on multi-core ARM. Supported multi-core processors can also process media access control (MACs) and high-level functions in 5G small cells and FWA devices.
Among the new Layerscape access to the family, a more powerful is LA 1200. Its programmable PHY subsystem has twice the LA 1575 processor, and 256 complex multiplication and every tick of the clock. Special engine accelerate forward error correction (FEC). The external host processor is connected via Gen 3 PCIe. ®x8 port. Zero I / F radio transceiver is connected by integrating ADCs and DACs. An ADC / DAC device supports two channels of 100 MHz-400 MHz bands used by MMWave 5G devices, each channel having a pair of 4 GSPS ADC / DACs. Another group supports a pair of narrower channels for 5G devices below 6 GHz.
Due to its programmability and standard interface, the LA 1200 Series can be used in a variety of designs. In DU, it can simply uninstall the FEC processing from the multi-core host, such as the Layerscape LX2160A 16 core processor, running a standard Linux release. An RU can utilize more on-chip resources, in 2x2 or 4x4 MIMO 6 GHz design, using LA 1200 as a time-critical low PHY function. In the MMWave cell or FWA customer room equipment design, the LA 1200 can process all baseband signal processing, depending on the host like a host of the LS1046A quad-core processor to achieve higher levels. Figure 1 shows the LA 1200 used in the FWA design.
Figure 1: Fixed Wireless Access (FWA) Customer Room Equipment (CPE) can use the LS1046A multi-core processor for the Layer 2 wide area network and router function, while the LA 1200 processor is used for the 5G layer 1 layer function.
The LA 9350 family has approximately a quarter of the floating-point capabilities and half of the control to process the Horsepower La 1200. This is a chip, mounted on a BGA package in a 9 × 9 mm. 2.5Gbit / s Ethernet port replaces the PCI interface. It does not include the ADC / DAC set for millimeter waves. Nevertheless, the LA 9350 series provides a variety of applications, such as 5G repeater to light space in 5G shadows, and process digital front-end processing in 2x2mimo RU. Low-cost LA 9310 series can smell 5G radio waves, analyze their quality or extraction timing signals, and become digital front ends on a single transmit chain. Customers also interested in the LA 9300 processor because it is a backbone of the Mesh wireless system. In the MESH wireless system, the backbone can be proprietary and can be optimized for QoS, elasticity, and full-duplex performance. Other companies even use these families for wired access.
Not only another beautiful G
The original product of the LA 1200, LA 9350 and LA 9310 will be provided to our early access plan in the first quarter of 2020. Interested system designers should not wait for their NXP account managers. Development can start using LA 1575 now we have a la 1575 reference design board to help development certificates concept. For more information on NXP 5G products, please visit
As we initially layerscape access processors, we use the new Layerscape Access series to change the industry through flexibility. These baseband processors bring open and intelligent to the physical layer. They are available for any developer, with sufficient versatility, available for different applications, and intelligence because they are programmable. Redefine the architecture of the RAN and lay the foundation for the subversion industry, 5G is not only another G. Similarly, the Layerscape access processor is more than just another chip, but a software platform that implements the baseband function, changing the design of communication devices.
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