Dynamic Channel Allocation for Wireless Resource Management
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Solution Overview
Problem
Existing communication systems, particularly 3GPP UTRA TDD mode, face challenges in efficiently managing the coexistence of dedicated and shared channels, leading to suboptimal channel allocation and resource utilization due to the lack of effective algorithms that can handle both types of channels simultaneously.
Innovation Solution
A decentralized interference-based dynamic channel allocation method that segregates dedicated and shared channels, using metrics like Interference Signal Code Power (ISCP) and path loss measurements to optimize timeslot allocation, with centralized control for uplink and decentralized for downlink, ensuring efficient resource management and interference minimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If dedicated channels are allocated using fixed channel allocation (FCA), then channel assignment is simple and fast, but resource utilization is inefficient due to random selection without considering traffic patterns
Solution Approach 1:
The patent transitions from static FCA parameters to dynamic DCA parameters by introducing traffic-adaptive channel allocation. The system changes allocation parameters (code and timeslot assignments) based on measured traffic loading in neighboring cells, transforming the fixed random assignment into a dynamic parameter-adjustment mechanism that optimizes resource utilization while maintaining operational simplicity through automated measurements and allocations.
Solution Approach 2:
The patent implements feedback mechanisms where the system measures traffic loading in neighboring cells and uses this information to adjust channel allocations dynamically. The feedback loop continuously monitors cell loading conditions and reallocates channels from lightly loaded cells to heavily loaded cells, improving resource utilization efficiency while maintaining manageable complexity through automated feedback-driven adjustments.
2Productivity
If dedicated channels are allocated using dynamic channel allocation (DCA) with centralized algorithms, then resource allocation is optimized based on network-wide information, but algorithmic complexity and signaling requirements increase significantly
Solution Approach 1:
The patent applies local quality by implementing decentralized DCA where each cell autonomously measures its own traffic loading and makes local allocation decisions based on neighboring cell conditions. Instead of a single centralized algorithm processing all network information, each cell operates with localized measurements and decision-making capabilities, reducing overall system complexity while maintaining effective resource allocation optimization through distributed intelligence.
3Adaptability or versatility
If dedicated and shared channels are mixed in the same timeslots, then resource flexibility increases, but interference management and channel allocation complexity increase
Solution Approach 1:
The patent applies segmentation by separating dedicated channels and shared channels into distinct timeslot allocations. Instead of mixing channel types in the same timeslots, the system segments resources so that dedicated channels receive guaranteed timeslots while shared channels utilize remaining capacity. This segmentation reduces interference management complexity and simplifies channel allocation while maintaining resource flexibility through dynamic adjustment of dedicated vs. shared timeslot proportions based on traffic conditions.
Data Source
AI summary
A wireless network dynamically allocating a timeslot to a downlink dedicated channel to a user equipment (UE) in a cell is disclosed. A call may be reallocated a different timeslot midcall where the different timeslot has a highest quality rank in the cell. The timeslot may then be allocated to a downlink shared channel in the cell. The allocation of the timeslot to the downlink dedicated channel may be prioritized over the allocation of the timeslot to the downlink shared channel.