Uplink Resource Allocation via Cluster Indication
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Solution Overview
Problem
The existing LTE-A system faces challenges in effectively allocating non-contiguous uplink resources due to the complexity of factors such as cluster length, number, starting location, and ending location, which conventional contiguous resource allocation cannot meet.
Innovation Solution
A method and apparatus for allocating uplink resources in a network terminal that informs user equipment (UE) through a UL grant message to use specific clusters of radio units for uplink transmission, with the message indicating starting and ending locations of each cluster, and utilizing binomial coefficients or resource indication values to simplify the allocation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-contiguous uplink resource allocation is implemented, then resource utilization and adaptability to diverse transmission requirements are improved, but allocation complexity increases due to multiple factors (cluster length, number, starting location, ending location)
Solution Approach 1:
The patent divides the uplink resource allocation into multiple independent clusters, where each cluster is defined by a starting location and ending location. This segmentation allows the system to allocate non-contiguous resources by specifying multiple clusters rather than treating the entire resource space as a single contiguous block, thereby improving adaptability while managing complexity through structured division.
Solution Approach 2:
The patent changes the allocation parameters from traditional contiguous methods to cluster-based definitions involving starting location, ending location, cluster number, and cluster length. By transforming the allocation approach into a parameter-driven system, the patent enables flexible non-contiguous resource assignment while maintaining systematic control over the complexity through standardized parameter management.
2Adaptability or versatility
If non-contiguous resource allocation is used, then diverse transmission requirements are met, but the number of allocation parameters and signaling overhead increase
Solution Approach 1:
The patent performs preliminary grouping of radio units into clusters before allocation, establishing a predefined cluster structure that the network terminal can reference during resource allocation. This preliminary organization reduces the need to transmit detailed individual resource specifications, thereby lowering signaling overhead while maintaining the ability to meet diverse transmission requirements through cluster-based allocation.
3Ease of operation
If contiguous resource allocation is used, then allocation simplicity is maintained, but diverse uplink transmission requirements cannot be satisfied
Solution Approach 1:
The patent segments the resource allocation into multiple clusters with defined starting and ending locations, allowing the system to maintain simplicity for contiguous allocations (when only one cluster is needed) while enabling complex non-contiguous allocations (when multiple clusters are specified). This segmentation approach preserves ease of operation for simple cases while providing the versatility needed for diverse transmission requirements.
Data Source
AI summary
A method for allocating uplink resource in a network terminal of a wireless communication system includes informing a user equipment (UE) about resource allocation via a resource allocation field in a UL grant message, to indicate the UE to use M clusters out ofN radio units to perform uplink transmission, wherein each of the M clusters includes at least one consecutive radio units, and the message indicates a starting location and an ending location of each of the M clusters (404).