Base Station Uplink Resource Allocation for LTE
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Solution Overview
Problem
In cellular communication systems like LTE, frequency resources reserved for uplink control signals are often underutilized, especially when the number of connected terminal apparatuses is small, leading to inefficient use of radio resources.
Innovation Solution
A base station apparatus that checks the usage of reserved frequency resources for control information and allocates them to user data transmission if not used, thereby optimizing the allocation of uplink radio resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency resources are reserved for control signal transmission, then control signal transmission is guaranteed, but uplink resources are not effectively used when the number of connected terminal apparatuses is small
Solution Approach 1:
The patent implements dynamic resource allocation by having the base station check whether reserved frequency resources for control signals are actually being used, and if not, reallocating those resources for user data transmission. This dynamic adjustment allows the system to adapt resource allocation based on actual traffic conditions, resolving the contradiction between guaranteeing control signal transmission and maximizing uplink resource utilization.
Solution Approach 2:
The patent changes the state of frequency resources from a static reserved state to a dynamic state where resources can be switched between control signal transmission and user data transmission based on usage conditions. This parameter change enables the system to optimize resource utilization while maintaining control signal transmission reliability when needed.
2Reliability
If frequency resources are reserved for control signal transmission, then control signal transmission is ensured, but system throughput is reduced due to resource underutilization
Solution Approach 1:
The base station dynamically monitors and determines whether reserved frequency resources are being used for control signals, and switches resource allocation accordingly. When control signals are not transmitted, the same resources are allocated for user data transmission, thereby increasing system throughput without compromising control signal transmission reliability when required.
Solution Approach 2:
The patent effectively 'discards' the reserved frequency resources when they are not needed for control signal transmission, and 'recovers' them for user data transmission purposes. This allows the system to maximize resource utilization and improve overall throughput while maintaining the capability to guarantee control signal transmission when needed.
Data Source
AI summary
A base station apparatus, which allocates uplink radio resources to a terminal apparatus, checks whether or not first frequency resources reserved for transmission of control information in the radio resources are used, and allocates at least a part of the first frequency resources to transmission of user data if it is checked that the at least a part of the first frequency resources are not used.