5G MBS Session Context Bridging Across 3GPP and 802.11bc
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Solution Overview
Problem
Existing systems face challenges in efficiently delivering 5G multicast/broadcast services over non-3GPP access networks like 802.11bc Enhanced Broadcast Service networks, particularly in integrating these services with 3GPP networks.
Innovation Solution
A method and apparatus for interfacing between a 3GPP network and a wireless local area network (LAN) to transmit multicast/broadcast services (MBS) session context information for distribution to Wireless Transmit Units (WTRUs) using circuitry with processors, memory, transmitters, and receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 5G multicast/broadcast services are delivered over non-3GPP access networks like 802.11bc, then service coverage and accessibility are improved, but integration complexity and protocol compatibility challenges increase
Solution Approach 1:
The patent introduces a non-3GPP access network (802.11bc Enhanced Broadcast Service network) as an intermediary infrastructure to deliver 5G MBS services. This intermediary provides protocol translation and adaptation between 3GPP core network protocols and non-3GPP wireless LAN protocols, enabling service delivery without direct 3GPP access while managing integration complexity through standardized interface definitions
Solution Approach 2:
The patent enables the 3GPP core network to deliver multicast/broadcast services through multiple access types (both 3GPP and non-3GPP) using a universal service delivery mechanism. The system allows WTRUs to receive MBS services regardless of whether they connect via 3GPP or non-3GPP access, creating a multi-functional delivery path that improves versatility while maintaining core network architecture
2Productivity
If MBS session context information is transmitted to WTRUs over wireless LAN, then service distribution efficiency is improved, but information transmission reliability and protocol compatibility challenges increase
Solution Approach 1:
The patent implements preliminary action by pre-establishing the MBS session context information structure and format before actual service delivery. The system prepares and validates the session context data (including service announcement and PDU session request information) in advance, ensuring proper formatting and completeness before transmission over the wireless LAN, which enhances both efficiency and reliability
Solution Approach 2:
The patent incorporates feedback mechanisms where the system monitors and tracks the transmission and reception of MBS session context information. This allows for verification of successful delivery and enables retransmission or error correction if reliability issues arise, ensuring accurate information transfer while maintaining efficient service distribution
Data Source
AI summary
Methods and apparatus for delivering 5G multicast/broadcast services to WTRUs in a 3GPP network via non-3GPP access, such as 802.11bc Enhanced Broadcast Service networks, are described. One method may include receiving, from the 3GPP network, first information indicating a service announcement or a protocol data unit (PDU) session request associated with 3GPP multicast/broadcast services (MBS. The first information may include MBS session information. The method may further include determining, based on the MBS session information, a MBS session context in the wireless LAN. The MBS session context may include second information used for transmission of the MBS over the wireless LAN. The method may then include transmitting third information indicating the MBS session context to the wireless LAN for distribution to Wireless Transmit Units (WTRUs) in the wireless LAN.