What is the expected spending on 4G networks in the foreseeable future and how will it impact the company's business 
magine. In addition, much of this activity should enable our customers to be able to wirelessly transmit data at a lower cost per bit. The overall increase in our tenants resulting value proposition, driven by continued 4G and new 5G network deployments on our infrastructure, will, we expect, continue to increase our NOI yields and returns on invested capital. While we expect to have 4G-related infrastructure on our sites for years to come, we believe ubiquitous 5G deployments are also on our doorstep.
What is interesting is that, in fact, each of the major carriers have initially deployed 5G in their own unique ways. Multiple spectrum bands have been and will continue to be deployed, spanning the range from high-band millimeter wave in cities to low band, like 600 megahertz, in rural areas and will ultimately be coupled with mid-band spectrum to support their customers' needs around suburbs and highway corridors. Importantly, we continue to believe that the majority of the sub-6 gigahertz spectrum deployments throughout the country will be on macro towers, and that mid-band spectrum will be a critical component of our tenants' 5G networks. We continue to expect mid-band deployments to accelerate beginning in the second half of this year as the new T-Mobile builds out more of its 2.5-gig spectrum. For the foreseeable future. As I mentioned, we also expect spending on 4G networks to continue, given that the migration of the user base from 4G to 5G will take a number of years. Bottom line, we believe that as a result, a tremendous amount of incrementally more complex equipment should end up on our towers across the U.S. over the next five to 10 years, allowing our business to continue to excel.
As I mentioned, we believe that over the next several years, the cloud is going to get closer to the edge. We're already seeing this trend from the major hyperscalers, and as a result, continue to evaluate the opportunities that might be there for us. What will also be interesting is how the hyperscale and cloud service providers will interact and position themselves with the carriers. So as a result, we continue to explore trials and partnerships with a variety of different players, including hyperscalers, cloud service providers, carriers, data center companies and equipment suppliers to see just how our infrastructure may plug into this new environment. Using our existing set of assets on the edge data center front, we continue to learn about the rapidly evolving edge ecosystem through our ownership of the metro interconnect facility in Atlanta and initial deployments of several trial edge data facilities at our tower sites. At a high level, we continue to believe that as information generation and processing progressively moves to the network edge, particularly with respect to advanced IoT applications, there will be a greater need for lower latency through distributed storage and compute functionality in close proximity to both wireless and wireline end consumers.
Edge compute offerings may eventually serve autonomous vehicle networks, interactive and immersive media delivery, cloud gaming and any number of other products and services where lower latency is a must and/or data needs to be closer to the consumer machine, where we believe the opportunity for us can truly scale. And while the potential for a scaled mobile edge solution is likely several years away, we are seeing initial positive indications of customer interest in our assets and are also having numerous conversations with a number of parties that are likely to play a significant role in the edge going forward. One such example is with Microsoft through their Azure Edge Zones program, where we are now a named partner. As time goes on, we are hopeful that other partnerships will develop to help us accelerate the development of the edge data model. On the indoor connectivity side, we continue to explore ways to leverage carrier-grade Wi-Fi, 4G, 5G and CBRS spectrum to create converged networks.
These targeted neutral host solutions can make sense in a much broader arr
magine. In addition, much of this activity should enable our customers to be able to wirelessly transmit data at a lower cost per bit. The overall increase in our tenants resulting value proposition, driven by continued 4G and new 5G network deployments on our infrastructure, will, we expect, continue to increase our NOI yields and returns on invested capital. While we expect to have 4G-related infrastructure on our sites for years to come, we believe ubiquitous 5G deployments are also on our doorstep.
What is interesting is that, in fact, each of the major carriers have initially deployed 5G in their own unique ways. Multiple spectrum bands have been and will continue to be deployed, spanning the range from high-band millimeter wave in cities to low band, like 600 megahertz, in rural areas and will ultimately be coupled with mid-band spectrum to support their customers' needs around suburbs and highway corridors. Importantly, we continue to believe that the majority of the sub-6 gigahertz spectrum deployments throughout the country will be on macro towers, and that mid-band spectrum will be a critical component of our tenants' 5G networks. We continue to expect mid-band deployments to accelerate beginning in the second half of this year as the new T-Mobile builds out more of its 2.5-gig spectrum. For the foreseeable future. As I mentioned, we also expect spending on 4G networks to continue, given that the migration of the user base from 4G to 5G will take a number of years. Bottom line, we believe that as a result, a tremendous amount of incrementally more complex equipment should end up on our towers across the U.S. over the next five to 10 years, allowing our business to continue to excel.
 As I mentioned, we believe that over the next several years, the cloud is going to get closer to the edge. We're already seeing this trend from the major hyperscalers, and as a result, continue to evaluate the opportunities that might be there for us. What will also be interesting is how the hyperscale and cloud service providers will interact and position themselves with the carriers. So as a result, we continue to explore trials and partnerships with a variety of different players, including hyperscalers, cloud service providers, carriers, data center companies and equipment suppliers to see just how our infrastructure may plug into this new environment. Using our existing set of assets on the edge data center front, we continue to learn about the rapidly evolving edge ecosystem through our ownership of the metro interconnect facility in Atlanta and initial deployments of several trial edge data facilities at our tower sites. At a high level, we continue to believe that as information generation and processing progressively moves to the network edge, particularly with respect to advanced IoT applications, there will be a greater need for lower latency through distributed storage and compute functionality in close proximity to both wireless and wireline end consumers.
Edge compute offerings may eventually serve autonomous vehicle networks, interactive and immersive media delivery, cloud gaming and any number of other products and services where lower latency is a must and/or data needs to be closer to the consumer machine, where we believe the opportunity for us can truly scale. And while the potential for a scaled mobile edge solution is likely several years away, we are seeing initial positive indications of customer interest in our assets and are also having numerous conversations with a number of parties that are likely to play a significant role in the edge going forward. One such example is with Microsoft through their Azure Edge Zones program, where we are now a named partner. As time goes on, we are hopeful that other partnerships will develop to help us accelerate the development of the edge data model. On the indoor connectivity side, we continue to explore ways to leverage carrier-grade Wi-Fi, 4G, 5G and CBRS spectrum to create converged networks.
These targeted neutral host solutions can make sense in a much broader arr