Uplink Control Channel Resource Allocation in LTE Systems
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Solution Overview
Problem
Conventional methods for allocating resources to uplink control channels in LTE systems face challenges in adapting to varying numbers of users and amounts of feedback information, leading to inefficient resource utilization and communication disruptions.
Innovation Solution
A method for dynamically allocating uplink control channel resources based on system conditions, including user numbers, data amounts, channel quality, and interference levels, using control information transmitted from the base station to the mobile station, employing partial and repetitive transmission methods to optimize resource distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pre-reserved resources are allocated to uplink control channel, then resource allocation simplicity is improved, but resource utilization efficiency deteriorates due to insufficient or excessive pre-reserved resources
Solution Approach 1:
The patent implements dynamic resource allocation for uplink control channels by allowing the base station to flexibly adjust resource allocation based on real-time system conditions such as number of users, channel quality, and interference levels. This replaces the static pre-reserved method with a dynamic approach that adapts to changing conditions, thereby improving resource utilization efficiency while maintaining allocation simplicity through automated base station control.
2Device complexity
If pre-reserved resources are allocated to uplink control channel, then downlink control information transmission is eliminated, but adaptability to system situation changes deteriorates
Solution Approach 1:
The patent implements a feedback-based resource allocation mechanism where the base station continuously monitors system conditions including number of users, channel quality information, interference levels, and data amounts. Based on this feedback, the base station dynamically adjusts uplink control channel resource allocation, enabling the system to adapt to changing conditions while eliminating the need for complex downlink control information transmission about resource allocation.
3Loss of energy
If dynamic resource allocation is implemented, then resource utilization efficiency is improved, but downlink control information transmission complexity increases
Solution Approach 1:
The patent enables the base station to autonomously perform resource allocation decisions based on monitored system conditions, eliminating the need for complex downlink control information transmission to mobile stations. The base station self-determines optimal resource allocation considering factors like user count, channel quality, and interference, thereby achieving high resource utilization efficiency without increasing downlink control overhead.
Data Source
AI summary
A method for adaptively allocating resources of an uplink control channel according to a system situation is disclosed. If a base station (BS) recognizes the system situation, establishes control information for resource allocation, and transmits the control information to a mobile station (MS), the mobile station (MS) allocates resources for transmitting uplink control information using a specific block or a specific resource distribution method according to the corresponding control information. The system situation may be changed according to the number of users contained in the BS's coverage or the usage of a multi-antenna. The variation of the system situation is actively reflected so that the uplink channel resources can be effectively used.