FlexE Mapper for Wireless Link Adaptation
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Solution Overview
Problem
Flexible Ethernet (FlexE) and Metro Transport Networking (MTN) technologies are not specified for operation over wireless links, limiting their application and efficiency in wireless communication networks, where they can enhance link capacity and reliability without introducing inefficiencies from hashing algorithms.
Innovation Solution
A system and method that maps FlexE and MTN data streams onto wireless links using packet, byte, or bit mapping techniques, ensuring correct ordering and delivery, and includes a mapper and demapper to adapt data streams for transmission over wireless links, utilizing a wireless data plane with components like PDCP and RLC layers, and buffering to manage variable wireless link conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FlexE and MTN are used over wireless links, then link capacity and reliability are improved, but device complexity increases due to mapping and demapping requirements
Solution Approach 1:
The patent introduces mapper and demapper devices as intermediary components that adapt FlexE and MTN data streams for wireless transmission. These intermediaries handle the complex mapping/demapping operations, isolating the complexity from the core network equipment while enabling reliable wireless operation of FlexE and MTN protocols
2Reliability
If packet mapping with sequence numbers is used, then correct ordering at receiver is ensured, but processing overhead increases
Solution Approach 1:
The mapper device performs preliminary actions by assigning sequence numbers to packets before transmission. This pre-ordering mechanism ensures correct reassembly at the receiver without requiring complex real-time ordering logic, balancing reliability with processing efficiency
3Quantity of substance
If multiple data streams are bonded over wireless links, then link capacity increases, but synchronization difficulty increases
Solution Approach 1:
The patent segments the bonding process into distinct mapping operations for each data stream. The mapper device handles each stream independently through calendar function-based mapping, then combines them for wireless transmission. This segmentation approach enables capacity aggregation while managing synchronization complexity through structured, independent stream processing
Data Source
AI summary
A mapper includes circuitry configured to receive data streams each or which is a stream of data based on a calendar function associated with one of Flexible Ethernet (FlexE) or Metro Transport Networking (MTN); and circuitry configured to perform mapping of each of the data streams and to provide an output of the mapping to a device in a wireless data plane for transmission over one or more wireless links. The mapping can include packet mapping where the stream of blocks is encapsulated into packets. The mapping can include byte mapping where the stream of blocks is converted into a byte stream that is provided to a Radio Link Control (RLC) layer that guarantees byte delivery in order at a receiver. The mapping can also include bit mapping wherein the stream of blocks is transferred as a stream of bits to a transport buffer Service Access Point (SAP).