TDMA Bandwidth Allocation via Channel Load Balancing
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Solution Overview
Problem
Current communication systems face inefficiencies in bandwidth allocation, particularly in mixed FDMA/TDMA systems, leading to delays and dropped communications due to uneven distribution of TDMA communications across channels, which reduces system capability and user satisfaction.
Innovation Solution
A method that allocates bandwidth on communication channels based on the number of active communications and their types, prioritizing channels with the greatest number of active TDMA communications to efficiently support new communications, thereby maximizing channel utilization and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If TDMA communications are evenly distributed across all communication channels, then channel utilization is improved, but FDMA communication requests cannot be supported because the entire channel bandwidth must be free
Solution Approach 1:
The patent applies local quality by differentiating channel allocation strategies based on communication type. For TDMA communications, the system allocates channels to maximize utilization by assigning to channels with fewer active communications. For FDMA communications, the system identifies channels with no active communications to ensure full bandwidth availability. This differentiated local allocation resolves the contradiction by allowing both communication types to be supported simultaneously with appropriate channel selection.
2Productivity
If multiple secure TDMA communications are assigned to the same communication channel, then channel utilization is improved, but call control signaling bandwidth is greatly reduced
Solution Approach 1:
The patent segments the communication channel capacity into different functional components: data transmission capacity and call control signaling capacity. By recognizing that secure TDMA communications require both data capacity and signaling bandwidth, the system allocates channels based on available signaling resources. This segmentation allows the system to prevent over-subscription of channels that would deplete signaling bandwidth, thereby maintaining system capability while optimizing data transmission.
3Reliability
If the full bandwidth of a communication channel is required for FDMA communications, then communication quality is maintained, but channel availability is reduced in mixed FDMA/TDMA systems
Solution Approach 1:
The patent implements dynamic channel allocation that adapts to the type of communication request. When an FDMA request arrives, the system dynamically identifies channels with no active communications to ensure full bandwidth availability, maintaining communication quality. When TDMA requests arrive, the system dynamically assigns channels based on current load to maximize utilization. This dynamic, demand-driven allocation resolves the contradiction by ensuring FDMA communications get dedicated full-bandwidth channels while allowing efficient TDMA channel usage.
Data Source
AI summary
A device receives a communication request for a time division multiple access (TDMA) communication. Upon receipt of the communication request, the device identifies a first communication channel that currently has at least one available TDMA slot and that is currently supporting a greatest number of active TDMA communications amongst a plurality of communication channels. Once the device identifies the first communication channel, the device allocates a first available TDMA slot for the TDMA communication on the first communication channel.