Wireless Packet Routing via LLC Encapsulation
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Solution Overview
Problem
Providing appropriate quality of service (QoS) in wireless communication networks is challenging due to mobility of subscriber access devices and differences in network architecture, as existing resource control protocols are not well-suited for wireless packet-switched networks.
Innovation Solution
A method for routing data packets in a cellular communications environment involves determining the appropriate point of attachment based on packet content and encapsulating the packets in an LLC frame to ensure delivery to the correct access node, allowing for flexible QoS management and support across multiple access nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional centralized QoS request methods are used in wireless networks, then QoS support can be provided to subscribers, but the system becomes inflexible and inefficient due to mobility of access devices and differences in network architecture
Solution Approach 1:
The system enables self-service by allowing the mobile device itself to initiate QoS requests and manage its own service quality parameters. The mobile device can autonomously determine when QoS adjustments are needed based on its mobility state and communication requirements, eliminating the need for complex centralized control while maintaining adaptability to changing network conditions
Solution Approach 2:
The system implements dynamic QoS management where parameters can be adjusted in real-time based on the mobile device's current state, location, and network conditions. This dynamic approach allows the system to adapt to mobility patterns and network architecture differences without requiring complex pre-configuration or centralized coordination
2Adaptability or versatility
If existing resource control protocols are used in wireless packet-switched networks, then network infrastructure can be utilized, but the protocols are not well-suited for wireless environments due to mobility and architecture differences
Solution Approach 1:
The system changes the fundamental parameters of QoS control by transitioning from centralized network-controlled protocols to device-initiated requests. This parameter change includes modifying how QoS decisions are made (from network-centric to device-centric), how mobility is handled (through device-autonomous detection), and how service quality is maintained (via flexible, architecture-agnostic request mechanisms)
3Reliability
If centralized QoS request handling is implemented, then QoS support can be coordinated, but the system becomes inflexible in handling mobile device transitions between access nodes
Solution Approach 1:
The mobile device performs self-service by autonomously detecting when it needs QoS adjustments and initiating requests without centralized coordination. This self-service capability allows the device to seamlessly handle transitions between access nodes while maintaining QoS, as it can independently determine when and where to request service quality adjustments
Data Source
AI summary
The claimed subject matter relates to performing routing in a wireless communications system. In more detail, each device associated with a wireless packet-switched network may not be aware of an identity and/or address of a particular point of attachment with respect to a wireless terminal. A data packet that should be provided to a particular point of attachment can be initially directed to a wireless terminal or a one-hop multicast address, for instance. Thereafter, the data packet can be encapsulated in a frame format and identity of the particular point of attachment can be provided in such frame. The frame can thereafter be routed to the point of attachment.