Hop-port Resource Allocation in Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in allocating and mapping resources, particularly in multiple-access systems like CDMA, TDMA, FDMA, OFDMA, and SC-FDMA, which affect the utilization of subcarriers and overall system capacity.
Innovation Solution
The system employs hop-ports, which are logical/virtual subcarriers that can be permuted and mapped to physical subcarriers using permutation functions like local hopping (LH) and global hopping (GH), allowing for efficient allocation and use of resources by remapping unavailable subcarriers to available ones and distributing hop-ports across subcarriers to avoid reserved zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional resource allocation methods are used in wireless communication systems, then the system structure is simple, but resource utilization efficiency is low and system capacity is limited
Solution Approach 1:
The patent segments the available subcarriers into multiple hopping zones and divides hop-ports into subzones, allowing independent allocation and mapping within each segment. This segmentation enables efficient resource utilization by assigning different hopping patterns to different users and zones, thereby resolving the contradiction between simple structure and high resource utilization efficiency.
Solution Approach 2:
The patent implements dynamic resource allocation through frequency hopping mechanisms where hop-ports are permuted and mapped to physical subcarriers based on time-varying patterns. The system dynamically adjusts resource assignment to match user requirements and channel conditions, achieving high productivity while managing complexity through structured dynamic behavior.
2Productivity
If more subcarriers are allocated to increase system capacity, then throughput increases, but the complexity of managing and mapping resources increases
Solution Approach 1:
The patent introduces hop-ports as intermediary virtual subcarriers that mediate between the physical subcarriers and the resource allocation decisions. These hop-ports are permuted and mapped to physical subcarriers through defined functions, simplifying the management complexity while enabling increased system capacity through efficient virtual-to-physical resource mapping.
Solution Approach 2:
The patent changes the mapping parameters through permutation functions that assign hop-ports to physical subcarriers based on configurable patterns. By adjusting these parameters (permutation functions, hopping zones, subzone configurations), the system can increase capacity without proportionally increasing management complexity, as the parameter changes follow structured rules.
3Reliability
If frequency hopping is implemented to provide frequency diversity, then reliability improves, but the complexity of resource allocation increases
Solution Approach 1:
The patent segments the frequency spectrum into multiple hopping zones and divides hop-ports into subzones with distinct permutation patterns. This segmentation enables frequency diversity through controlled hopping within zones while maintaining manageable allocation complexity through the structured subzone organization and predefined permutation functions for each zone.
Solution Approach 2:
The patent implements periodic frequency hopping where hop-ports are mapped to physical subcarriers using time-varying permutation patterns that repeat periodically. This periodic action provides frequency diversity over time, improving reliability through temporal spreading and frequency diversity, while the periodic nature simplifies the allocation complexity through predictable, repeating patterns.
Data Source
AI summary
Techniques for allocating and mapping resources in a wireless communication system are described. The system may use hop-ports to facilitate allocation and use of subcarriers. In one aspect, the hop-ports may be partitioned into multiple subzones, with each subzone including a configurable number of hop-ports. The hop-ports within each subzone may be permuted or shuffled based on a permutation function. After permutation, the hop-ports in all subzones may be mapped to the subcarriers based on local or global hopping. In another aspect, a set of hop-ports may be mapped to a set of subcarriers. A hop-port may be mapped to an unavailable subcarrier and may then be remapped to another available subcarrier. In yet another aspect, a set of hop-ports may be mapped to a set of subcarriers distributed (e.g., evenly) across all subcarriers but avoiding subcarriers in a reserved zone.