Wireless Access Reference Signal Collision Reduction
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Solution Overview
Problem
In wireless communication networks, when multiple user equipment (UEs) access the network using the same resource, interference occurs due to identical reference information, leading to incorrect decoding and repeated retransmissions, resulting in wasted resources and prolonged access times. Existing solutions, such as increasing the number of access resources, either lead to underutilization or reduced network data transmission rates.
Innovation Solution
A data transmission method where UEs select reference information from a set corresponding to a preset type, such as reference signal sequences or scrambling sequences, to reduce interference by using different reference information, thereby improving decoding probabilities. This method involves the terminal selecting appropriate reference information and sending data packets to the base station, which adjusts resource allocation based on successful decoding and retransmission scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of access resources is increased to reduce collision probability, then the access collision probability is reduced, but the network data transmission rate is reduced due to fewer available network resources
Solution Approach 1:
The patent changes the parameter of reference information (such as reference signal sequences or scrambling sequences) used by UEs during data transmission. By dynamically adjusting these reference information parameters based on collision detection and UE identification, the system enables multiple UEs to transmit on the same resource without severe interference, thus resolving the contradiction between reducing access resources and maintaining high data transmission rates
2Reliability
If a large number of access resources are configured through system message, then the access collision probability is reduced, but the access resources become underutilized when the number of accessing UEs is small
Solution Approach 1:
The patent implements dynamic adjustment of reference information parameters during the access process. Instead of statically allocating many access resources, the system dynamically assigns different reference signal sequences or scrambling sequences to UEs based on real-time conditions, enabling efficient utilization of limited access resources while preventing collisions through adaptive parameter changes
3Productivity
If multiple UEs send message 3 on the same resource using the same reference information, then the resource utilization is improved, but the mutual interference increases causing decoding failure
Solution Approach 1:
The patent applies local quality by assigning different reference information characteristics (different reference signal sequences or scrambling sequences) to different UEs transmitting on the same resource. This differentiation in local properties (reference information) allows the base station to distinguish and decode multiple UEs' transmissions separately, maintaining both high resource utilization and high decoding success rate
Data Source
AI summary
Provided are a data transmission method and apparatus, a terminal and a base station. The data transmission method includes selecting, by a terminal, reference information from a reference information set corresponding to a preset reference information type; obtaining a first target data packet according to the selected reference information and a data packet to be transmitted; and sending the first target data packet to a base station.