Dynamic Wireless Resource Allocation for Signaling Efficiency
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Solution Overview
Problem
Current wireless communications networks are not spectrally efficient in allocating transmission resources for signaling information, leading to performance inefficiencies due to reliance on robust modulation and coding schemes for worst-case interference scenarios.
Innovation Solution
A method for dynamically allocating transmission resources in wireless communications networks, where the managing device considers past resource allocations and signal-plus-interference to noise ratios to maximize the probability of correct message reception, optimizing the allocation of resources for both individual transmissions and signaling information within each frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If robust modulation and coding schemes are used for signaling information transmission to overcome worst-case interference scenarios, then reliability is improved, but spectral efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from static fixed-field signaling to dynamic resource allocation. The managing device determines transmission resources for signaling information on a per-frame basis, adapting to current channel conditions rather than always using the most robust (but least efficient) fixed configuration. This allows the system to optimize between reliability and spectral efficiency based on actual interference levels.
Solution Approach 2:
The patent changes the parameter of transmission resource allocation from fixed to variable. By adjusting which time-frequency resources are used for signaling information based on observed interference patterns and channel conditions, the system can maintain reliability when needed while improving spectral efficiency when conditions permit. The managing device modifies resource allocation parameters dynamically rather than maintaining constant conservative settings.
2Ease of operation
If fixed field signaling is used for broadcasting transmission resource allocation information, then ease of operation is improved, but spectral efficiency deteriorates
Solution Approach 1:
The patent replaces the static fixed-field approach with a dynamic resource allocation mechanism. The managing device determines appropriate transmission resources for signaling information based on current network conditions, allowing flexibility in resource usage while maintaining the broadcast nature of signaling. This dynamic approach preserves ease of operation through centralized management while eliminating the spectral inefficiency of fixed allocations.
Solution Approach 2:
The patent modifies the allocation parameters for signaling information from fixed time-frequency positions to variable positions selected based on channel conditions and interference patterns. The managing device adjusts these parameters frame-by-frame, changing which resources are used for signaling while maintaining reliable broadcast delivery to all mobile terminals.
3Device complexity
If transmission resources are allocated without considering historical allocation data, then device complexity is reduced, but spectral efficiency deteriorates
Solution Approach 1:
The patent applies preliminary action by having the managing device review and store transmission resource allocation information from previous frames before making new allocation decisions. This historical data is used to identify patterns in interference and channel conditions, enabling more informed resource selection that improves spectral efficiency while maintaining manageable complexity through systematic processing of past allocations.
Solution Approach 2:
The patent implements feedback by using previously allocated transmission resources and observed channel conditions to inform future allocation decisions. The managing device continuously monitors the performance of past allocations and adjusts subsequent resource assignments based on this feedback, creating a closed-loop system that optimizes spectral efficiency over time while maintaining reasonable processing complexity.
Data Source
AI summary
A method and managing device for allocating transmission resources in a wireless communications network for performing K individual transmissions between an access point and mobile terminals, signalling information for enabling the mobile terminals to determine transmission resources allocated in a subsequent frame being transmitted in at least one transmission resource of each frame, a managing device, when considering (S401) allocating transmission resources in a frame t: obtains (S402) information representative of transmission resources allocated beforehand from frame t−W−T+2 to frame t−1; allocates (S403) transmission resources in frame t for performing K individual transmissions and transmission resources in frame t−x for transmitting signalling information related to frame t, by reviewing transmission resources allocations from frame t−W+1 to frame t−1 by relying on a figure of merit representative of a probability that at least one message in each one of the K individual transmissions is correctly received.