Wireless Resource Block Allocation with Dynamic Slot Shifting
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Solution Overview
Problem
The circuit-mode resource allocation scheme in wireless communication systems, such as IEEE 802.16, leads to a reduction in resource efficiency due to the creation of holes when resources are de-allocated, disrupting the continuity of resource allocation and causing unnecessary waste.
Innovation Solution
A method and apparatus that determine the use or non-use of Resource Blocks (RBs) using a persistent allocation scheme, transmitting resource allocation information to Mobile Stations (MSs), and shifting the location of non-de-allocated resource slots to prevent the creation of holes, thereby maintaining resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resources are de-allocated in the circuit-mode resource allocation scheme, then resource flexibility is improved, but holes are created that reduce resource efficiency
Solution Approach 1:
The patent implements dynamic resource slot repositioning where the locations of resource slots are not fixed but can be shifted based on allocation status. When a resource slot is de-allocated, subsequent resource slots are dynamically repositioned to fill the gap, maintaining continuous resource utilization while allowing flexible allocation and de-allocation operations.
2Loss of time
If persistent allocation scheme is used, then resource allocation overhead is reduced, but holes create waste when de-allocation occurs
Solution Approach 1:
The system maintains persistent allocation benefits by dynamically adjusting resource slot positions only when necessary (upon de-allocation). This dynamic repositioning ensures that previously allocated resources are shifted to fill holes created by de-allocation, preventing resource waste while maintaining the low-overhead persistent allocation framework.
3Productivity
If resource slots are continuously allocated, then resource efficiency is maintained, but de-allocation creates gaps that disrupt continuity
Solution Approach 1:
The patent employs dynamic repositioning of resource slots to maintain allocation continuity. When a resource slot is de-allocated, the system automatically shifts subsequent resource slots forward to fill the created gap, ensuring that the resource allocation structure remains continuous and efficient without manual intervention.
Solution Approach 2:
The system performs self-service by automatically detecting and filling holes created by de-allocation. The resource allocation mechanism itself handles the continuity maintenance by repositioning slots, without requiring external management or leaving gaps that would reduce efficiency.
Data Source
AI summary
A method for allocating resources by a Base Station (BS) in a wireless communication system is provided. The method includes determining use/nonuse of each of a plurality of Resource Blocks (RBs), which are allocated using a persistent allocation scheme, and transmitting resource allocation information indicating use/nonuse of each of the plurality of RBs to a plurality of Mobile Stations (MSs) according to a result of the determination.