Fixed Uplink Allocation for Extended Coverage Wireless Devices
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing radio resources, particularly in extended coverage conditions where legacy Uplink Status Flag (USF) based mechanisms are not feasible for uplink data transmissions.
Innovation Solution
A radio access network node and wireless device implement a technique for pre-allocating radio blocks on the packet data traffic channel, with an uplink assignment message indicating the number of pre-allocated blocks, coverage class, and starting point for data transmission, enabling efficient uplink data transmissions in extended coverage conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If legacy USF based mechanisms are used for uplink data transmissions, then resource allocation is simple, but they are not feasible in extended coverage conditions
Solution Approach 1:
The patent applies preliminary action by pre-allocating uplink radio blocks to wireless devices before actual data transmission occurs. The RAN node assigns specific radio blocks, time slots, and frequency resources in advance through uplink assignment messages, enabling devices in extended coverage to transmit data without needing legacy USF mechanisms. This pre-allocation ensures reliable transmission by reserving resources beforehand, directly resolving the contradiction between transmission reliability and mechanism feasibility.
Solution Approach 2:
The patent implements dynamics by making the resource allocation flexible and adaptive to different coverage conditions. The system dynamically adjusts uplink resource allocation based on device coverage class, transmission requirements, and network conditions. Instead of fixed legacy USF mechanisms, the system provides dynamic uplink block allocations that can be modified based on actual transmission needs, enabling adaptability in extended coverage while maintaining reliability.
2Reliability
If pre-allocation of radio blocks is implemented, then uplink transmission reliability improves, but resource allocation complexity increases
Solution Approach 1:
The patent applies segmentation by dividing uplink resource allocation into distinct, manageable components. Each uplink assignment message contains specific segments: radio block identifiers, time slot assignments, frequency resource allocations, and coverage class parameters. This segmentation of resource allocation into discrete, structured elements simplifies the management of complexity while ensuring reliable transmission through comprehensive pre-allocation.
Solution Approach 2:
The patent uses an intermediary approach by introducing structured uplink assignment messages as mediators between the RAN node and wireless devices. These messages serve as standardized intermediaries that carry all necessary pre-allocation information in a organized format, reducing the complexity burden on both network and device sides while maintaining transmission reliability through complete resource specification.
3Use of energy by moving object
If blind transmissions are reduced, then energy efficiency improves, but resource allocation precision requirements increase
Solution Approach 1:
The patent applies preliminary action by providing devices with precise pre-allocation information before transmission, including specific radio block identifiers, time slot assignments, and frequency resources. This advance specification eliminates the need for blind transmissions where devices would otherwise transmit without knowing resource availability. The precision of pre-allocation directly reduces energy consumption by ensuring devices transmit only when and where resources are confirmed available.
Solution Approach 2:
The patent implements feedback mechanisms where the RAN node monitors uplink transmission success and provides subsequent uplink assignment messages that refine resource allocations. This feedback loop allows the system to learn from actual transmission outcomes and adjust pre-allocation precision accordingly, reducing blind transmissions and improving energy efficiency while adapting to actual channel conditions and device performance.
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AI summary
A radio access network node (e.g., Base Station Subsystem), a wireless device (e.g., a mobile station), and various methods are described herein for improving the allocation of radio resources in wireless communications. In one embodiment, the radio access network node and wireless device implement a fixed uplink allocation technique. In another embodiment, the radio access network node and wireless device implement a flexible downlink allocation technique.