India’s connectivity narrative has traditionally focused on towers, spectrum allocations and nationwide coverage. However, the effectiveness of digital infrastructure is determined indoors. Offices, hospitals, airports, metro stations, campuses, malls and residential complexes account for the majority of data consumption, with industry estimates indicating that nearly 80 per cent of mobile data usage occurs inside buildings. As digital services become more video-centric and cloud-based, this share is expected to increase further.
Wi-Fi has evolved beyond a basic access layer into a performance-engineered network designed for dense, latency-sensitive and device-heavy environments. However, indoor mobile coverage remains inconsistent, particularly as 5G deployments expand into higher frequency bands that face structural challenges in penetrating modern buildings. This has driven renewed interest in purpose-built indoor networks that combine enterprise Wi-Fi, fibre backhaul and, where required, indoor cellular systems such as small cells and distributed antenna system (DAS).
Engineering indoor Wi-Fi
The evolution of Wi-Fi standards has accelerated in recent years. After Wi-Fi 5 remained mainstream for an extended period, the industry moved to Wi-Fi 6 in 2019, followed by Wi-Fi 6E, which expanded operations into the 6 GHz band in markets where regulatory approvals were in place. In January 2024, the Wi-Fi Alliance launched the Wi-Fi 7 Certified programme, signalling the transition of Wi-Fi 7 from development to deployable enterprise infrastructure, with certification momentum building through 2024 and 2025.
This progress is closely linked to changing enterprise requirements. Organisations increasingly prioritise predictable performance, stable throughput in high-density environments, deterministic latency for real-time applications and the ability to support a large number of concurrent devices without degradation. These demands are reflected in global enterprise wireless local area network refresh cycles, where newer standards drive upgrade decisions. Wi-Fi 7 now accounts for a growing share of enterprise access point deployments, particularly in environments where performance gains justify investment.
India’s indoor connectivity needs have also become more complex. Hybrid work models, software-as-a-service platforms, smart building systems and sensor-driven applications have transformed enterprise networks into mission-critical infrastructure. Connectivity now functions as a platform supporting identity management, segmentation, security enforcement, uptime assurance and operational visibility across locations.
Wi-Fi 7 arrives
Wi-Fi 7 introduces capabilities aligned with these emerging requirements. Operating across the 2.4 GHz, 5 GHz and 6 GHz bands, it delivers significantly higher performance and responsiveness. One of the most visible enhancements is support for channel bandwidths of up to 320 MHz in the 6 GHz band as against 160 MHz under Wi-Fi 6E. Higher-order modulation, including 4K QAM, further improves spectral efficiency.
More strategically, Wi-Fi 7 introduces multi-link operation, enabling devices to transmit and receive data across multiple frequency bands simultaneously. In enterprise environments, this improves reliability and reduces latency by dynamically managing traffic when individual bands experience congestion or interference.
In India, Wi-Fi 7 deployment is closely linked to spectrum policy. In May 2025, the Department of Telecommunications issued draft regulations proposing the delicensing of the lower 6 GHz band (5925-6425 MHz) for unlicensed low-power indoor and very low-power devices. If implemented, this would provide critical additional capacity for Wi-Fi in dense indoor environments where existing bands are already congested. Spectrum supports is essential for predictable performance, particularly for real-time collaboration tools and operational applications.
However, adoption considerations remain. Upgrading to Wi-Fi 7 involves more than replacing access points. Network design assumptions, device refresh cycles and operational learning practices must be adjusted, particularly as features such as encrypted beacon mechanisms alter troubleshooting workflows. As a result, most organisations are expected to pursue phased deployments, beginning with high-density or high-value zones before a broader roll-out.
Complementary indoor networks
Wi-Fi and cellular technologies are often positioned as substitutes, but in practice they serve complementary roles. Wi-Fi functions as the primary high-capacity data layer within buildings, while indoor cellular systems provide carrier-grade voice and mobile coverage, particularly in areas where outdoor signals weaken.
Indoor cellular coverage faces persistent challenges, particularly as higher-frequency spectrum struggles to penetrate contemporary building materials. This has increased interest in in-building solutions such as small cells and DAS, although deployment remains constrained by cost, complexity, fragmented ownership structures and the presence of legacy systems designed primarily for 4G.
Policy discussions are increasingly recognising indoor digital infrastructure as a core utility. Regulatory initiatives to rate buildings for digital readiness reflect a shift towards evaluating fibre pathways, equipment space and neutral access principles that allow multiple service providers to operate on transparent terms.
DAS plays a critical role in this context, particularly in high-footfall venues. By distributing cellular signals through a network of antennas, DAS architectures support consistent indoor coverage and capacity in complex layouts. In such environments, they function as essential infrastructure rather than optional enhancements.
Low-latency use cases
The primary driver for indoor network upgrades is application performance rather than headline speeds. Enterprise use cases are real time, multi-device and operationally integrated.
In healthcare, connected devices, location services and diagnostic systems require stable, low-latency connectivity. In offices and campuses, high definition video collaboration and cloud desktops have become baseline workloads. Public venues such as airports and stations are also required to maintain consistent performance under extreme device density.
Emerging applications based on augmented reality, virtual reality and extended reality further intensify these requirements, demanding high throughput and minimal latency. Even if these applications are not widely used, the factors driving demand, such as higher device counts, greater video usage and deeper cloud integration, are already present.
Fibre backhaul
If Wi-Fi functions as the indoor access layer, fibre constitutes the underlying foundation. Even the most advanced Wi-Fi standards are unable to deliver a consistent user experience if a building’s backhaul is constrained, unreliable or asymmetrical. As a result, fibre-to-the-x has become central to indoor Wi-Fi strategies, particularly across multitenant buildings, campuses and enterprise environments.
FTTx encompasses multiple deployment models, including fibre-to-the-home for residential users and micro-businesses, fibre-to-the-building for multi-dwelling units, fibre-to-the-office for dedicated enterprise connectivity, and passive optical LAN architectures for large-scale footprints. The strategic advantages of fibre are well established and include high transmission capacity, symmetrical upload and download speeds, low latency, long-distance stability and resistance to electromagnetic interference. From an enterprise perspective, the last-mile challenge increasingly centres on ensuring that Wi-Fi backhaul does not pose a performance bottleneck, particularly as office traffic becomes more cloud-intensive and time-sensitive.
In India, this trend reflects a broader shift in organisational approaches to connectivity. Enterprises are increasingly distinguishing between standard business internet access and enterprise-grade connectivity. The latter is defined by service-level agreements, structured security frameworks, network segmentation, life cycle management and end-to-end operational visibility. These attributes are essential for organisations operating across multiple locations that cannot afford variability or uncertainty in network performance and availability.
Public Wi-Fi in 2025
Public Wi-Fi continues to play an important role as a digital inclusion mechanism, even in an environment characterised by low mobile data tariffs. India’s PM-WANI framework was designed to reduce regulatory friction and allow small entrepreneurs to operate public Wi-Fi hotspots as public data offices, which are supported by aggregators and app providers, with a central registry maintained by a public sector telecom research institution.
What has changed in 2025 is the scale of deployment, accompanied by a renewed focus on strengthening the underlying business case. As of November 26, 2025, PM-WANI has reached 391,599 active hotspots nationwide. The ecosystem has also expanded, with 206 aggregators and 112 app providers listed in the registry. Recent regulatory interventions, including tariff caps on broadband plans offered to public data offices up to a defined speed threshold, reflect efforts to lower input costs and improve commercial viability for participating entities.
Opportunities
India’s indoor connectivity agenda for 2025 is shaped by three key factors – rising enterprise performance expectations, the evolution of Wi-Fi standards with Wi-Fi 7, and policy actions that either enable or constrain spectrum availability and building readiness.
The near-term opportunity is clear. Indoor connectivity must be planned in the same manner as power, HVAC and safety systems – early in the building development process, systematically and with provisions for future upgrades. For enterprises, the emphasis will be on delivering high-density performance and low latency, supported by fibre backhaul and intelligent network management. For public venues and large campuses, hybrid indoor strategies that combine enterprise Wi-Fi with indoor cellular solutions where required are increasingly emerging as the benchmark for always-on connectivity.
The broader shift is cultural. Indoor connectivity is increasingly being recognised as a core infrastructure attribute rather than a secondary amenity. In a digital-first economy, the question is no longer whether a building offers Wi-Fi, but whether it has the appropriate combination of spectrum headroom, engineered network design, fibre pathways and neutral access principles to support the next generation of indoor digital use cases.
