Nokia goes further into this OpenRAN game by opening its fronthaul interface with three 3rd party vendors now. Nokia has already integrated third-party TDD RRH from three suppliers with its Baseband, and the solution is available today. Nokia AirScale Baseband is qualified for commercial Open RAN deployments for both TDD RRH (FR1) and mmWave (FR2) […]

When we’re discussing vRAN and Open RAN topics, we’ll find ourselves facing some questions about the performance and cost. The highly common question is ” Can virtualized RAN deliver the same performance as traditional RAN? ” I see it’s a valid and logical question especially since no one will invest with at least a guaranteed […]

As we know that RAN, Radio Access Network, is divided into two main components: -> Baseband Unit (BBU). -> Radio Unit (RU). The move from D-RAN to C-RAN then v-RAN and O-RAN depends on how to deploy these two RAN components. MNOs want to #centralize the RAN control functions to improve overall performance, gain efficiencies, and reduce […]

The open radio access network or Open RAN can be broadly divided into the following three elements: Open interfaces that combine RAN equipment from a variety of vendors. Virtualization (i.e., virtualized RAN (vRAN) that enables hardware and software inside RAN equipment to be separated. Intelligent control that optimizes and automates RAN operation. Open RAN can […]

The increase in data rates in 5G makes it impractical to continue with the conventional CPRI fronthaul implementation. Moving towards a higher layer split would relax the latency and bandwidth requirements, but then fewer processing functions can be centralized. It is thus critical that the new functional-split architecture takes into account technical and cost-effective trade-offs […]

As I received many messages during the last week about the eCPRI topic in 5G and OpenRAN, I prepared some notes about this. eCPRI is replacing the CPRI protocol in 5G to reduce the bandwidth BW requirements of CPRI transport and making Fronthaul affordable and available for all mobile network operators. It improves transport efficiency to match the Speed and […]

RAN (Radio Access Network) is the main telecommunication network component that is located between the core network and users’ equipment (such as a mobile phone). RAN is constituted of a Radio Unit (RU), which is the antenna visible on top of a cell tower, and a Baseband Unit (BBU), a set of devices linking the […]

3GPP defined a new RAN architectural in Release 15, where the gNB (Site Name for 5G) is logically split into three entities denoted as: CU: Centralized Unit. DU: Distributed Unit. RRU: Remote Radio Unit. The RAN functions that correspond to each of the three entities are determined by the so-called split points. After a thorough […]

In order to meet the 5G network timing requirements, there is a significant challenge. The challenge is 5G performance requirements driving precise timing needs from cloud to edge. The legacy proprietary solutions rely on high-cost, purpose-built appliances, and specialized network interface cards. 5G deployments demand high timing synchronization across the network and affordable infrastructure costs. […]

The architecture of eNB or gNB with O-DU and O-RUs has some important definitions here: O-DU: O-RAN Distributed Unit: a logical node hosting RLC/MAC/High-PHY layers based on a lower layer functional split. O-RU: O-RAN Radio Unit: a logical node hosting the Low-PHY layer and RF processing based on a lower layer functional split. LLS: Lower […]

What is PTP? Precision Time Protocol (PTP), defined in the IEEE1588-2008 standard, is a protocol that uses a master-slave hierarchy to synchronize clocks on network devices. PTP uses hardware time stamping to achieve submicrosecond synchronization. PTP defines how real-time clocks in a network synchronize with each other. A network where PTP operates is called a […]