Service Hosting Environment

Description

The Service Hosting Environment (SHE) is an architectural framework introduced in 3GPP Release 19 that defines how service applications can be hosted and executed within the mobile network infrastructure. It provides a standardized environment where third-party and operator-developed services can be deployed, managed, and executed, leveraging the network's connectivity, compute, and storage resources. SHE is closely related to edge computing concepts and is specified in TS 22.278 and TS 22.870, which cover service requirements and architectural aspects respectively.

Architecturally, SHE sits between the network infrastructure and the service applications it hosts. It provides a set of application programming interfaces (APIs) and runtime services that allow applications to access network capabilities such as location information, quality of service control, and traffic routing. The environment abstracts the underlying network complexity, enabling service developers to focus on application logic rather than network integration. SHE can be deployed at various points in the network, including the core network, the edge, or even at the radio access network level, depending on latency and performance requirements.

How SHE works involves several key mechanisms. First, it provides a service lifecycle management framework that handles application onboarding, deployment, scaling, and termination. Second, it offers a runtime environment that supports multiple execution paradigms, including virtual machines, containers, and serverless functions. Third, it provides network exposure functions that allow hosted applications to interact with network services through standardized APIs. Fourth, it implements isolation and security mechanisms to ensure that hosted applications do not interfere with each other or with network operations. Fifth, it includes monitoring and analytics capabilities to track application performance and resource usage.

Key components of SHE include the service hosting platform, which provides the compute and storage infrastructure; the service management system, which handles lifecycle operations; the network exposure layer, which provides API access to network capabilities; and the security framework, which enforces isolation and access control. These components work together to create a cohesive environment that supports diverse service types, from latency-sensitive applications like augmented reality to throughput-intensive applications like video analytics.

The role of SHE in the network is to enable new business models and service delivery paradigms. By providing a standardized hosting environment, SHE allows mobile network operators to offer platform-as-a-service capabilities to enterprises and developers, creating new revenue streams beyond connectivity. It also enables the deployment of services at the edge, reducing latency and backhaul traffic while improving user experience. In the context of 5G-Advanced and 6G, SHE is expected to become increasingly important as networks evolve toward becoming compute-continuum platforms that integrate communication, computation, and intelligence.

Purpose & Motivation

SHE was created to address the growing need for a standardized way to host and execute service applications within mobile networks. Prior to SHE, service hosting was largely proprietary, with each vendor or operator implementing their own mechanisms for deploying applications at the edge or in the core. This fragmentation made it difficult for application developers to create services that could run across different networks and for operators to efficiently manage multi-vendor environments.

The motivation for SHE also stems from the evolution of mobile networks from pure connectivity providers to integrated communication and compute platforms. As 5G introduced ultra-reliable low-latency communication (URLLC) and enhanced mobile broadband (eMBB), new use cases emerged that required compute resources to be located close to users. Edge computing became essential for applications such as autonomous vehicles, industrial automation, and immersive media. However, deploying and managing applications at the edge introduced significant complexity that needed to be standardized.

SHE addresses these challenges by providing a common architectural framework that defines how services are hosted, how they interact with network capabilities, and how they are managed throughout their lifecycle. It builds on earlier work in areas such as Multi-access Edge Computing (MEC) and network exposure but extends these concepts to create a more comprehensive and integrated service hosting environment. By standardizing this environment, SHE enables interoperability, reduces deployment complexity, and accelerates the development of new services.