Radio Communication Device Adaptive Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional radio communication systems face inefficiencies in resource utilization when repeating response signals, leading to waste of physical resources and complex scheduling restrictions in base stations.
Innovation Solution
A radio communication apparatus and method that selectively use resources defined by sequences with varying cyclic shifts and orthogonal sequences, reducing the number of available resources as the number of response signal transmissions increases, to minimize resource waste without restricting base station scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If response signals are repeated multiple times to improve reliability, then the reliability of signal reception is improved, but the waste of physical resources increases and scheduling complexity increases
Solution Approach 1:
The patent applies dynamics by making the resource allocation flexible and adaptive based on the repetition count. The number of selectable resources is dynamically reduced as the response signal is repeated more times. This resolves the contradiction by allowing reliable signal reception through repetition while minimizing resource waste through progressive resource reduction.
Solution Approach 2:
The patent changes the parameter of resource quantity based on the repetition count. Initially, a larger number of resources are available for selection, but as repetitions increase, the number of selectable resources decreases. This parameter change resolves the contradiction between maintaining reliability through repetition and reducing resource waste.
2Reliability
If response signals are repeated multiple times to improve reliability, then the reliability of signal reception is improved, but the scheduling complexity in base station increases
Solution Approach 1:
The patent implements dynamic resource allocation where the set of selectable resources changes based on repetition count. This dynamic approach simplifies scheduling complexity compared to managing fixed resources for each repetition, while still ensuring reliable signal reception through the repetition mechanism.
Solution Approach 2:
The patent uses partial action by reducing the number of selectable resources progressively as repetitions increase, rather than maintaining full resource availability for all repetitions. This partial resource allocation reduces scheduling complexity while maintaining sufficient reliability through the repetition mechanism.
3Ease of operation
If fixed resources are allocated for response signal repetitions, then the scheduling is simplified, but the resource utilization efficiency decreases
Solution Approach 1:
The patent applies dynamics by making resource allocation adaptive rather than fixed. The number of selectable resources changes dynamically based on the repetition count, which improves resource utilization efficiency compared to fixed allocation while maintaining reasonable scheduling simplicity through a systematic reduction rule.
Solution Approach 2:
The patent changes the resource allocation parameter based on repetition count, transitioning from larger resource sets for initial transmissions to smaller resource sets for subsequent repetitions. This parameter change improves resource utilization efficiency while maintaining operational simplicity through a clear, rule-based allocation scheme.
Data Source
AI summary
A radio communication device in which the waste of physical resources involved in the repetition transmission of a response signal can be minimized with no restriction on the scheduling of a base station imposed or with the restriction on the scheduling thereof minimized. In this device, a control unit (209) selects the ZAC sequence of the cyclic shift amount corresponding to a PUCCH number inputted from a determination section (208) from among ZAC#0 to ZAC#11 to set it to a spreading section (215) and selects the block-wise spreading code sequence corresponding to the PUCCH number inputted from the determination section (208) from BW#0 to BW#2 to set it to a spreading section (218). More specifically, the control unit (209) selects any of the resources defined by the ZAC#0 to ZAC#11 and the BW#0 to BW#2. As a result, the more the number of transmissions of the response signal, the less the number of resources the control unit (209) can select.