Interworking Layer Protocol Stack for Wireless Network Routing
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Solution Overview
Problem
Future wireless communications networks need to efficiently support a wide range of devices with diverse data traffic profiles and requirements, including low complexity devices, high-definition video streaming, and critical applications like autonomous vehicles, which demand low latency and high reliability.
Innovation Solution
The implementation of a network node with a protocol stack that includes a physical layer, a data link layer, and an interworking layer. This interworking layer is configured to receive and transmit packets with a header and payload, using a routing table and an index to identify routes and user equipment, enabling efficient communication between parts of a wireless communications network, even when these parts are remotely located.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single protocol stack is used for all devices, then device complexity is reduced, but the ability to support diverse traffic profiles and applications deteriorates
Solution Approach 1:
The protocol stack is segmented into multiple instances, each optimized for specific traffic profiles and applications. This allows the system to maintain simple individual protocol stacks while supporting diverse requirements through multiple specialized instances.
Solution Approach 2:
The protocol stack implementation is made dynamic by selecting and activating appropriate protocol stack instances based on the specific traffic profile and application requirements. This enables the system to adapt its protocol handling behavior without increasing the complexity of individual protocol stacks.
2Area of stationary object
If network parts are located remotely to improve coverage, then coverage area is increased, but communication latency and reliability deteriorate
Solution Approach 1:
Routing tables are pre-configured with index values that encode both route identification and user equipment identification. This preliminary configuration enables direct packet routing without complex lookup procedures, reducing latency and improving reliability for remote communications.
Solution Approach 2:
The interworking layer acts as an intermediary that uses the index-based routing mechanism to efficiently forward packets between remotely located network parts. This intermediary layer abstracts the complexity of remote routing while maintaining reliable communication.
3Loss of time
If traditional packet routing is used, then routing flexibility is maintained, but processing time and latency increase
Solution Approach 1:
Routing information is prepared in advance by encoding both route and user equipment identification into compact index values stored in routing tables. This preliminary action eliminates the need for complex real-time routing decisions, significantly reducing packet processing time while maintaining routing flexibility through the index structure.
Solution Approach 2:
The routing approach is changed by transforming traditional detailed routing information into compressed index parameters. This parameter transformation enables faster processing while the indexing mechanism preserves routing flexibility through efficient lookup and association.
Data Source
AI summary
A network node and method for operating a node in a wireless communications network involves communicating user plane data between network parts. The node uses a protocol stack with a physical layer, data link layer, and interworking layer. The interworking layer handles packets with headers and payloads, transmitting them via the data link and physical layers to other network nodes. It also receives packets from other nodes, routing them based on a routing table and packet headers. Each routing table entry corresponds to a connection between infrastructure equipment parts and user equipment associated with the communicated user data.