MBMS Carrier Selection in Multi-Carrier Wireless Networks
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Solution Overview
Problem
Maintaining service continuity for multimedia broadcast multicast service (MBMS) in multi-carrier wireless communication networks is challenging, especially when MBMS is offered on only some carriers, as it requires efficient carrier selection and resource management to ensure seamless service delivery across varying network conditions.
Innovation Solution
The solution involves the transmission of MBMS assistance information by base stations, which includes carrier selection modes and indicators for user equipment (UE) to prioritize carriers based on MBMS service availability and signal quality, allowing for 'best effort' service reception, and the use of MBMS interest indication messages to manage resource allocation and scheduling, ensuring continuous MBMS service even during handovers and varying network loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If MBMS is offered only on some carriers in multi-carrier networks, then network resource utilization is improved, but service continuity for UE becomes challenging
Solution Approach 1:
The base station transmits MBMS assistance information to the UE in advance, including carrier selection modes and indicators that prepare the UE for potential carrier changes. This preliminary information enables the UE to proactively select alternative carriers before service interruption occurs, maintaining continuity while allowing selective carrier deployment for MBMS
Solution Approach 2:
The system implements dynamic carrier selection where the UE can switch between different carriers based on real-time network conditions and MBMS service availability. The base station provides updated assistance information that enables the UE to adaptively select the optimal carrier, ensuring service continuity across multiple carriers rather than being static on a single carrier
2Reliability
If UE prioritizes carriers based on MBMS service availability, then service reception quality is improved, but carrier selection complexity increases
Solution Approach 1:
The base station acts as an intermediary by transmitting MBMS assistance information that includes carrier selection modes and indicators. This intermediary provides structured guidance to the UE, simplifying the carrier selection process while enabling the UE to prioritize carriers based on MBMS service availability and signal quality without requiring complex UE-side decision-making algorithms
3Productivity
If MBMS interest indication messages are used to manage resource allocation, then resource management efficiency is improved, but signaling overhead increases
Solution Approach 1:
The MBMS interest indication message serves multiple functions: it informs the base station of the UE's MBMS service interests, enables the base station to allocate appropriate resources, and triggers the transmission of MBMS assistance information. This multi-functionality improves resource management efficiency while minimizing the increase in signaling overhead by consolidating multiple control functions into a single message exchange
Data Source
AI summary
Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for management and/or support of multimedia broadcast multicast service (MBMS) service in a wireless communications network. An evolved Node B (eNB) may transmit MBMS assistance information to a user equipment (UE). The MBMS assistance information may identify a carrier by which one or more upcoming MBMS services are to be provided and an indicator of a carrier selection mode to be used by the UE. The UE may transmit an MBMS interest indication message including information related to one or more targeted MBMS services which the UE wants to receive.