WiMAX Multicast Join via MBS Parameters
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Solution Overview
Problem
Current IP multicast and broadcast technologies are not directly applicable to mobile networks due to their unique structures and resource management requirements, particularly for multimedia services that require efficient data delivery and seamless handoff in WiMAX networks.
Innovation Solution
A method for a terminal to join a Multicast Broadcast Service (MBS) in a WiMAX network by obtaining MBS parameters, including an air interface connection ID and content ID, to receive MBS content, involving network entities like ASN-GW, MBS server, and AAA server for authentication and resource reservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If IP multicast and broadcast technology is applied to mobile networks, then data delivery efficiency is improved, but network structure complexity increases due to special mobile network structures and resource management requirements
Solution Approach 1:
The patent introduces an MBS server as an intermediary entity between the content source and mobile terminals. The MBS server receives content from external sources, processes it into MBS data, and distributes it through the mobile network infrastructure. This intermediary approach enables efficient multicast/broadcast delivery while abstracting the complexity of mobile network resource management from the core protocol implementation.
Solution Approach 2:
The patent segments the multicast broadcast service into distinct functional components: content acquisition, MBS data generation, air interface transmission, and terminal reception. By dividing the system into these modular segments with clearly defined interfaces, the patent enables efficient data delivery while managing network structure complexity through functional separation.
2Reliability
If seamless handoff is implemented for MBS services during terminal movement, then service continuity is improved, but resource management complexity increases due to multiple BS coordination requirements
Solution Approach 1:
The patent merges the handoff management functionality into the existing MBS zone architecture. When a terminal moves between base stations within the same MBS zone, the service continuity is maintained by keeping the terminal within the logical MBS zone boundary, even though the physical serving base station changes. This merging of handoff management with zone-based MBS delivery reduces resource management complexity while ensuring service continuity.
Solution Approach 2:
The patent establishes MBS zones in advance, grouping multiple base stations that will provide MBS services. By pre-configuring these zones and their associated resources, the network is prepared for potential handoffs before they occur. When terminals move within or between zones, the preliminary zone configuration enables seamless handoff without requiring complex real-time resource management decisions.
3Productivity
If MBS parameters including air interface connection ID and content ID are used, then terminal joining efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent uses specific parameter changes to enable efficient terminal joining: the air interface connection ID identifies the transmission channel, while the content ID identifies the specific MBS content. By changing and specifying these parameters in the signaling messages, terminals can efficiently join MBS services with clear, unambiguous identification of resources, reducing the need for extensive negotiation and lowering overall signaling overhead.
Data Source
AI summary
A method for a terminal to join a multicast broadcast service (MBS) in a wireless network and a wireless communication system are provided, so as to enable a terminal to successfully join an MBS and receive MBS content. The method and the system relate to a wireless communication field. A terminal obtains MBS parameters that include a first ID indicating an air interface connection and a second ID indicating MBS content from a network, so that the terminal can receive the MBS content indicated by the second ID from the air interface connection indicated by the first ID after receiving the MBS parameters and thus successfully join the MBS. The terminal may initiate an MBS join process by sending an MBS join request message, so as to obtain the MBS parameters and join the required MBS. The network may actively initiate the MBS join process to send the MBS parameters to the terminal and invite the terminal to join the MBS.