Resource Allocation Feedback Message for Mobile Radio Networks

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Solution Overview

Problem

In mobile radio communication networks, existing resource allocation mechanisms for retransmissions are inefficient due to limited capacity in signaling new resource assignments, especially in multi-carrier systems with degraded channel conditions, leading to potential starvation of new resource allocations during initial transmissions.

Innovation Solution

A method that incorporates new frequency and/or time extensions into the feedback message (ACK/NACK) to univocally determine the resource allocation for retransmissions, allowing the transmitter to adapt and send data in newly allocated resources without affecting the capacity for initial transmissions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If new resource assignments are signaled through feedback messages for retransmissions, then resource allocation adaptability is improved, but signaling capacity is exceeded and initial transmissions are starved

Engineering Contradiction:

Improveresource allocation adaptabilityVSAvoidsignaling capacity

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent combines feedback message signaling (ACK/NACK) with resource allocation signaling into a single unified message. The feedback message not only indicates whether data was received correctly but also carries resource assignment information for retransmissions, merging two separate signaling functions into one to conserve signaling capacity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The feedback message is transformed into a multi-functional signal that serves both as an acknowledgment (ACK/NACK) and as a resource allocation indicator simultaneously. This universal signaling approach allows the same message structure to convey multiple types of information, improving efficiency in the uplink control channel

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If resource allocation for retransmissions is handled separately from initial transmissions, then retransmission reliability is improved, but overall system productivity decreases

Engineering Contradiction:

Improveretransmission reliabilityVSAvoidsystem throughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The resource allocation for retransmissions is determined and signaled in advance within the feedback message itself, before the actual retransmission occurs. This preliminary signaling allows the transmitter to prepare and execute retransmissions efficiently without additional signaling delays, maintaining reliability while improving overall system productivity

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP2007058B1Method for allocating resources in a mobile radio communication network, and the corresponding transmitter and receiver.

Publication Date: 2009.08.26 ALCATEL LUCENT SA

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AI summary

The present invention relates to a method for allocating resources to a transmitter adapted to send data over a radio link, the data being transmitted in physical resource blocks allocated by a resource allocation mechanism, said physical resource block being defined by its frequency extension and its time extension, an automatic repeat request protocol being used for signalling erroneously and/or correctly received data through a feedback message. According to the present invention, the method is characterised in that it includes the steps of: - including in said feedback message an information related to the new frequency extension and/or time extension for the physical resource block to be used in case of further transmission of data by said transmitter.