UE Identifier Partitioning for Coordinated Base Station Channels
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Solution Overview
Problem
In wireless communication networks, coordinating base stations can lead to ambiguities and inefficiencies due to UEs being unable to distinguish between channels intended for different base station sets, resulting in network disruptions and inefficiencies.
Innovation Solution
A RAN partitions a pool of UE identifiers into non-overlapping sets for different coordination sets, assigning a unique ACS-RNTI to each UE, allowing base stations to identify channels intended for specific UEs using these identifiers, and manages transitions between sets based on UE movement and network needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base stations coordinate in sets to improve coverage and throughput, then network efficiency and coverage area increase, but channel identification ambiguity arises when UEs cannot distinguish between channels from different base station sets
Solution Approach 1:
The patent segments the pool of UE identifiers into non-overlapping subsets, with each subset assigned to a specific base station coordination set. This segmentation ensures that UEs can uniquely identify which base station set a channel is intended for, eliminating identification ambiguity while maintaining the coordination benefits.
Solution Approach 2:
The patent applies local quality by assigning different identifier characteristics to different base station coordination sets. Each coordination set receives identifiers with specific properties from its designated subset, allowing UEs to locally distinguish channels based on the identifier properties associated with each specific coordination set.
2Adaptability or versatility
If a single base station belongs to multiple coordination sets to maximize resource utilization, then base station utilization improves, but UE ability to determine channel intent deteriorates
Solution Approach 1:
The patent segments identifiers into non-overlapping subsets assigned to different coordination sets. Even when a base station belongs to multiple coordination sets, the segmented identifier system ensures that each coordination set uses distinct identifiers, allowing UEs to easily determine which coordination set a channel is intended for without confusion.
3Reliability
If traditional handover procedures are replaced with base station coordination to reduce disruptions, then mobility efficiency improves, but new challenges arise in managing identifier ambiguity across coordination sets
Solution Approach 1:
The patent segments the identifier pool into coordination set-specific subsets, providing a systematic framework for managing identifiers across multiple coordination sets. This segmentation simplifies the complexity of managing handovers and coordination transitions by providing clear rules for identifier assignment and usage in each coordination set context.
Data Source
AI summary
In a radio access network (RAN), a method for increasing network efficiency includes partitioning a pool of identifiers into at least a plurality of identifier sets associated with a plurality of respective sets of base stations in the RAN. The identifier sets include a first identifier set associated with a first base station set of the plurality of respective sets of base stations. The method also includes determining that the first base station set is to serve a user device and assigning a first identifier from the first identifier set to the user device. The method further includes transmitting the first identifier to the user device and jointly transmitting, by at least two base stations of the first base station set, information to the user device via a channel, including using the first identifier to indicate that the channel carries information for the user device.