Network Slice Mobility via Frequency Carrier Switching
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Solution Overview
Problem
Current wireless communication networks face challenges in dynamically allocating network slices to user equipment (UE) that require multiple services with different traffic requirements, as existing technologies restrict slice access based on frequency carriers, limiting mobility and service initiation flexibility.
Innovation Solution
The implementation of mechanisms allowing UE to request and access network slices not initially supported by its current cell frequency, through handover, dual-connectivity, or carrier aggregation, with the core network providing necessary information for slice provisioning, enabling on-demand service access and network slice-aware mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slice access is restricted based on frequency carriers, then network resource allocation is simplified, but service flexibility and mobility are limited
Solution Approach 1:
The network is segmented into multiple frequency carriers, each capable of providing different network slices. This allows the network to be divided into manageable segments (frequency carriers) that can independently support different slice types, enabling flexible service allocation without requiring complex centralized control for the entire network.
Solution Approach 2:
Each frequency carrier is designed to be multi-functional, capable of supporting multiple network slices simultaneously. This universality allows any UE to access any network slice by switching to an appropriate frequency carrier, eliminating the need for complex slice-specific routing and simplifying network resource allocation while maintaining high service flexibility.
2Ease of operation
If UEs are restricted to network slices provided by their current cell frequency, then mobility management is simplified, but service initiation flexibility is limited
Solution Approach 1:
The system implements dynamic network slice access where UEs can switch between frequency carriers based on service requirements. This dynamic approach allows UEs to initiate services on any network slice by transitioning to the appropriate frequency carrier, providing service initiation flexibility while keeping mobility management straightforward through standard frequency carrier switching mechanisms.
Solution Approach 2:
Frequency carriers act as intermediaries between UEs and network slices. Instead of directly managing complex slice-specific mobility, the system uses frequency carriers as mediators that UEs can switch to for accessing different slices. This intermediary approach simplifies mobility management by reducing it to standard frequency carrier transitions while enabling flexible service initiation.
3Adaptability or versatility
If multiple network slices are deployed across different frequency carriers, then service diversity is improved, but UE access complexity increases
Solution Approach 1:
UEs autonomously determine which frequency carrier to access based on their service requirements and the network slice information provided by the base station. This self-service approach allows UEs to independently select the appropriate frequency carrier for their desired network slice without complex centralized allocation, maintaining ease of operation while supporting diverse services.
Solution Approach 2:
The base station pre-provides network slice information to UEs, including which frequency carriers support which network slices. This preliminary information provision enables UEs to make informed decisions about frequency carrier selection without real-time complex negotiations, reducing access complexity while enabling diverse service deployment across multiple frequency carriers.
Data Source
AI summary
Wireless communications systems and methods related to mobility with consideration for network slicing are provided. In one embodiment, a user equipment (UE) transmits in a first cell frequency of a network, a request for a network slice of the network that is not provided by the first cell frequency. The UE receives, in response to the request, an information for communicating in a second cell frequency of the network that provides the requested network slice. In one embodiment, a core network entity receives, from a network entity operating over a first cell frequency of a network, a request to provide a network slice of the network to a UE, the network slice not provided by the first cell frequency. The core network entity transmits, to the BS, information associated with a second cell frequency of the network providing the network slice.