Integrated Preamble-Pilot-Data Uplink for Low-Overhead Random Access
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Solution Overview
Problem
The existing 3GPP LTE random access procedure has high signaling overhead and low network resource utilization, particularly in 5G applications like eMBB, which affects the efficiency of uplink frequent packet services.
Innovation Solution
A method and apparatus that integrates preamble, pilot, and data into a single uplink transmission, utilizing a many-to-many mapping between preamble and pilot resource groups, and independent code modulation for UE IDs to reduce signaling overhead and increase network resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the existing LTE random access procedure is used, then user discovery can be achieved, but signaling overhead is high and network resource utilization is low
Solution Approach 1:
The patent combines the random access preamble transmission with uplink data transmission by integrating the preamble into the Physical Uplink Shared Channel (PUSCH). This merging eliminates the need for separate random access procedure signaling, thereby reducing signaling overhead while improving network resource utilization by carrying both access and data traffic in the same channel.
Solution Approach 2:
The PUSCH channel is given dual functionality: it serves both as a data transmission channel and as a random access preamble channel. This multi-functionality allows the same physical resource to fulfill multiple purposes, reducing the need for dedicated random access resources and improving overall resource efficiency.
2Loss of time
If separate random access and data transmission channels are used, then clear user discovery is achieved, but access delay increases
Solution Approach 1:
The patent performs user discovery and random access identification within the same transmission opportunity by embedding preamble information in the PUSCH. This preliminary integration eliminates the sequential waiting time between separate access and data channels, reducing access delay while maintaining reliable user identification through the embedded preamble sequences.
Data Source
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AI summary
Provided are a random-access sending and receiving method and apparatus, transmitting end, receiving end, and storage medium. The random-access sending method includes: a preamble resource is acquired, and preamble information is generated; a pilot resource is determined according to the preamble resource and a user equipment identifier, and pilot information is generated; data information is acquired, and the data information is mapped to a time-frequency resource, the data information including user equipment identifier information; and a radio frame is formed from the preamble information, the pilot information and the data information, and the radio frame is sent.