LTE Resource Allocation Signaling Fragmentation
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Solution Overview
Problem
The efficient allocation of resources in LTE communication systems is hindered by the fragmentation of resources caused by the introduction of enhanced PDCCH in the PDSCH, leading to inefficiencies in resource utilization.
Innovation Solution
A communication node and user device system that generates and uses additional resource allocation data to identify and exclude resource blocks carrying control data from the primary allocation, allowing for more efficient allocation of resource blocks by combining this data with the existing resource allocation data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If enhanced PDCCH is introduced in the PDSCH to carry additional control channel information, then control channel capacity is improved, but resource allocation efficiency deteriorates due to fragmentation
Solution Approach 1:
The patent segments the resource blocks into two distinct parts: those allocated for user data transmission and those allocated for enhanced PDCCH control information. This segmentation allows the system to simultaneously support both user data and control information in organized, non-overlapping regions, thereby maintaining resource allocation efficiency while increasing control channel capacity.
Solution Approach 2:
The patent extracts the enhanced PDCCH control information from the general PDSCH resource pool and places it in specifically designated resource blocks. This extraction prevents control information from fragmenting the user data resources, thus improving resource allocation efficiency while still providing additional control channel capacity.
2Productivity
If resource blocks are allocated for user data transmission, then user data communication is improved, but control data transmission deteriorates due to lack of dedicated resources
Solution Approach 1:
The patent merges the PDSCH and enhanced PDCCH into a unified resource allocation framework where both user data and control information are transmitted within the same subframe structure. This merging allows efficient utilization of available resources while ensuring dedicated allocations for both data and control purposes.
Solution Approach 2:
The patent creates a universal resource allocation mechanism that can dynamically assign resource blocks for either user data or control information based on system needs. This multi-functional approach allows the same resource pool to serve both user data transmission and control data transmission requirements efficiently.
Data Source
AI summary
A mobile telecommunications system is described in which a base station uses enhanced allocation techniques to reduce fragmentation of resource allocations within a sub-frame due to the presence of control data within resources used for carrying user data. Different solutions are described including provision of supplemental information to supplement existing resource allocation data, use of overloading such that DCI formats may have different interpretations and the provision of new DCI formats.