Radio Resource Power Allocation for HS and DCH Services
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Solution Overview
Problem
Current communication systems face inefficiencies in power utilization and interference between High Speed Downlink Packet Access (HS) and Dedicated Channel (DCH) services, leading to power waste and increased block error rates due to sudden HS power fluctuations and suboptimal power allocation.
Innovation Solution
The method involves pre-adjusting DCH power based on predicted HS pulses, improving outer loop power control to quickly adjust SIR targets, and dynamically setting HS power limits to minimize interaction and optimize power utilization, thereby reducing peak-to-average power ratio and enhancing system capacity and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If all remaining power resource is allocated as available power resource for HS service, then HS service power is increased, but power interaction with DCH service increases causing DCH block errors and system performance degradation
Solution Approach 1:
The patent applies preliminary action by predicting HS power allocation in advance and pre-adjusting DCH power accordingly. The base station predicts future HS power needs and proactively adjusts DCH power levels before the HS transmission occurs, preventing DCH block errors caused by sudden power fluctuations. This advance preparation resolves the contradiction by ensuring DCH reliability is maintained even when HS power is increased.
Solution Approach 2:
The patent implements dynamics by introducing dynamic power adjustment mechanisms where DCH power is not fixed but continuously adapted based on predicted HS power allocation. The system dynamically balances power between HS and DCH services, allowing DCH power to flexibly respond to HS power changes. This dynamic approach resolves the contradiction by enabling both services to coexist with optimized power distribution rather than static allocation.
2Reliability
If fixed amount of power is reserved for HS services, then power interaction is reduced, but power utilization efficiency decreases due to unused power during low HS traffic
Solution Approach 1:
The patent applies dynamics by replacing fixed power reservation with dynamic power allocation. Instead of reserving a static amount of power for HS services, the system continuously adjusts HS power allocation based on actual traffic demand and channel conditions. This allows the system to maintain power allocation stability while eliminating wasted power during low traffic periods, as power is allocated only when needed.
Solution Approach 2:
The patent implements parameter changes by making the power allocation parameter variable rather than constant. The available power for HS services is not a fixed value but changes dynamically based on system conditions, traffic load, and channel quality. This parameter change enables the system to adapt power allocation to actual needs, resolving the contradiction between stability and energy efficiency.
3Reliability
If ILPC frequency is increased to combat fast interference fluctuation, then DCH reliability improves, but system complexity increases due to more frequent power adjustments
Solution Approach 1:
The patent applies preliminary action by performing power adjustments in advance based on predictions rather than reacting to actual interference realizations. Instead of continuously adjusting power in response to real-time interference measurements, the system predicts future interference conditions and pre-adjusts power levels. This reduces the need for frequent high-frequency adjustments while maintaining reliability, thereby reducing system complexity.
Solution Approach 2:
The patent implements feedback by using prediction-based information to guide power control decisions. The system incorporates feedback mechanisms that use historical data and channel state information to predict future conditions, allowing power adjustments to be made based on anticipated rather than actual interference. This feedback approach maintains reliability while reducing the complexity associated with high-frequency reactive adjustments.
Data Source
AI summary
The invention relates to a method and an arrangement of efficiently utilizing radio resources in a communication network, comprising a communication network node communicating with one or more user equipments over a radio interface, wherein at least two communication services are provided on said radio interface, each having a certain amount of power allocated in an interactively way. The interaction between said at least two communication services is minimized in order to obtain an enhanced power utilization.