In-Building Coverage Presents Tough Demands

Carriers are embracing open radio access networks as they “introduce” more virtualization, intelligence and “ultimately automation” into their networks, Stefan Pongratz, Dell’Oro Group vice president-RAN market research, said during a Fierce Network webinar Tuesday on ORAN indoors. Del Oro recently projected that global RAN revenue will decline at a 2% compound average growth rate through 2028 (see 2407260041). “Within that there are pockets of the RAN market that are growing,” including ORAN, small cells, millimeter-wave deployments and fixed wireless access, Pongratz said. A big challenge for AMB Sports and Entertainment, which manages Mercedes-Benz Stadium in Atlanta, is keeping up with fan demand, Chief Information Officer Kevin Pope said. “We actually have to track a different demand line when you think of events like the SEC [college football] Championship, a Taylor Swift concert, a FIFA World Cup game, the Super Bowl,” he said. The demands are higher than for average events, he added. Connectivity is “something we take seriously, but it’s a moving target.” Customers don’t care about which technology is used, “they just want to have a good experience" but "we need to have all these tools in our toolbox.” If people are reading email, “that’s one thing,” Pope said, but if thousands of fans are trying to stream high-resolution video at the same time that requires a different set of tools. His company uses a distributed antenna system and Wi-Fi but also millimeter-wave spectrum in areas where it expects the highest bandwidth demands. At the biggest events, during the halftime of a football game or a set break at a concert, the demand peaks “are just staggering.” You also have to deal with customer preferences, Pope said: Some customers have limited data plans so they want to use Wi-Fi, while others may not trust Wi-Fi. The initial focus with any new generation of wireless is on outdoor, macro coverage, said Upendra Pingle, CommScope senior vice president-intelligent cellular networks. When that’s done, the focus moves to in-building coverage, starting with large public venues, followed by more general network densification, he said. “This cycle repeats every decade … and we’ll see the same thing on 6G.” Pingle said carriers are focusing more on high-band deployments “because that’s where high bandwidth is available” for “massive, data-hungry use cases.” With millimeter-wave, the signals don’t penetrate buildings very well and “a dedicated in-building solution becomes more and more important.” With that comes the need for “an open, virtualized architecture to deploy in-building cellular to cover all the use cases,” he said. As venues consider millimeter-wave spectrum, it has to make sense for them financially given the costs. “The use case has to be balanced with the business case.” High-band will have its place, “but it's going to have to be a specific application dealing with a specific use case,” Pingle said.