ILNP CoMP Traffic Redirection via Prefix Translation
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Solution Overview
Problem
Current cellular communication networks face complexity and latency issues in redirecting data traffic due to the reliance on anchor points and overlay mechanisms, particularly in coordinated multipoint (CoMP) and multi-connectivity (MC) scenarios, which increase overhead and latency.
Innovation Solution
The implementation of the Identifier-Locator Network Protocol (ILNP) allows for the elimination of anchor points by associating locators with Packet Data Convergence Protocol (PDCP) endpoints registered with a DNS, enabling ILNP prefix translation to direct traffic to user equipment (UE) via its current connection point or baseband, based on channel state information (CSI), thereby reducing complexity and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If anchor points and overlay mechanisms are used to redirect data traffic in CoMP and MC scenarios, then traffic distribution between coordinating entities and baseband units can be achieved, but bandwidth overhead and latency increase due to decapsulation and re-encapsulation processes
Solution Approach 1:
The patent extracts and removes the anchor point component from the network architecture. By eliminating the anchor point that performs decapsulation and re-encapsulation, the system directly routes traffic between the coordinating entity and baseband units, thereby removing the source of latency while preserving the traffic distribution function through alternative means.
Solution Approach 2:
The patent introduces a new intermediary mechanism - a locator-based routing system that replaces the traditional anchor point. This intermediary uses location information to directly route packets between entities without requiring decapsulation/re-encapsulation, thus mediating the traffic distribution need while avoiding the latency penalty of the old approach.
2Ease of operation
If anchor points and overlay mechanisms are used to redirect data traffic, then traffic distribution can be performed, but computational overhead increases due to decapsulation and re-encapsulation processes
Solution Approach 1:
The patent removes the computationally intensive decapsulation and re-encapsulation functions from the network path by eliminating the anchor point. The simplified direct routing approach requires minimal processing, thereby reducing computational overhead while maintaining traffic distribution capability through locator-based routing.
Solution Approach 2:
The patent replaces the mechanical packet manipulation process (decapsulation and re-encapsulation) with a simpler information-based routing mechanism. Instead of physically stripping and re-applying protocol headers, the system uses locator information to directly route packets, substituting a complex mechanical process with a more efficient information-processing approach.
3Reliability
If traditional addressing schemes with care of address (CoA) in anchor points are used, then each path can be uniquely identified at layer 3, but device complexity increases due to the need for anchor points and overlay mechanisms
Solution Approach 1:
The patent extracts and removes the anchor point infrastructure from the network architecture. By eliminating this complex component, the overall network complexity is reduced while path identification reliability is maintained through the use of locator-based addressing that directly identifies transmission paths without requiring intermediate anchor points.
Solution Approach 2:
The patent changes the fundamental parameter of addressing from CoA-based (anchor-point-centric) to locator-based (position-centric). This parameter change simplifies the network architecture by removing the need for anchor points while maintaining the ability to uniquely identify paths, as locators directly encode position information that defines the transmission path.
Data Source
AI summary
A method is for redirecting data traffic destined for user equipment in a cellular network with packet data convergence protocol function local to connection points of the cellular network. The method includes obtaining a prefix and identifier for the user equipment, configuring a secondary connection point to provide a prefix of a primary connection point, the identifier for the user equipment and radio bearer information for the user equipment, and redirecting data traffic for the user equipment to the secondary connection point using network address translation to utilize a prefix of the secondary connection point and the identifier of the user equipment as the destination address for the data traffic.