Short C-RNTI Resource Mapping for CoMP Acknowledgments
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Solution Overview
Problem
In coordinated multi-point (CoMP) wireless communication systems, non-anchor cell base stations struggle to identify and manage resources for sending or receiving acknowledgments, leading to inefficiencies and increased latency due to their lack of knowledge about resource grants provided by anchor cell base stations.
Innovation Solution
The method involves identifying resources for acknowledgments based on criteria recognizable by both anchor and non-anchor cell base stations, using identifiers like C-RNTI or physical resources associated with transmissions, enabling non-anchor cell base stations to independently send or receive acknowledgments through cooperation techniques such as joint transmission and cooperative beamforming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If non-anchor cell base stations use conventional methods to send or receive acknowledgments, then they can maintain simple operation, but they experience increased latency and reduced communication efficiency due to inability to independently identify resources
Solution Approach 1:
The patent applies preliminary action by pre-configuring non-anchor cell base stations with cell radio network temporary identifiers (C-RNTIs) that enable them to independently identify acknowledgment resources. This pre-configuration allows base stations to immediately recognize and transmit acknowledgments without waiting for anchor cell instructions, thereby reducing latency and improving communication efficiency in CoMP environments
2Loss of information
If non-anchor cell base stations rely on anchor cell base stations for acknowledgment resource information, then device complexity remains low, but information loss occurs due to inability to independently recognize resources
Solution Approach 1:
The patent implements universality by designing a standardized C-RNTI-based resource identification mechanism that can be universally applied across both anchor and non-anchor cell base stations. This multi-functional approach enables non-anchor base stations to independently perform resource identification without requiring complex cell-specific configurations, thereby eliminating information loss while maintaining operational simplicity
Data Source
AI summary
Systems and methodologies are described that facilitate identifying resources upon which an acknowledgment can be sent or received in a wireless communication environment that leverages coordinated multi-point (CoMP). The resources can be identified based upon a criterion that can be identifiable to a non-anchor cell base station (as well as an anchor cell base station, a mobile device, etc.). The criterion can be an identifier corresponding to a mobile device, where the identifier maps to a predetermined set of resources. Examples of the identifier can include a media access control identifier (MACID), a cell radio network temporary identifier (C-RNTI), a short C-RNTI, etc. Further, the criterion can be physical resources corresponding to a transmission, where the acknowledgment is responsive to the transmission. Moreover, the acknowledgment can be sent or received in connection with a cooperation technique (e.g., joint transmission via inter-site packet sharing, cooperative beamforming, cooperative silence, . . . ).