Random Access Response Messaging for Early User Data in 5G
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Solution Overview
Problem
Existing mobile communication systems face challenges in efficiently transmitting user data through random access response messages and performing cell reselection based on frequency priority, particularly in IoT and MTC applications.
Innovation Solution
A method and device for processing control signals in a wireless communication system, including receiving and transmitting control signals, and inserting user data into msg3 based on decoding from a non-access-stratum container in the random access response message, while supporting downlink early data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user data is transmitted through random access response message, then data transmission efficiency is improved, but message structure complexity increases
Solution Approach 1:
The patent embeds user data within the existing random access response message structure by nesting user data into the MAC layer message. The base station includes user data in the random access response message sent to the terminal, allowing data transmission without establishing a separate dedicated connection. This nesting approach enables efficient data transmission while utilizing the existing message framework.
Solution Approach 2:
The patent performs preliminary actions by pre-configuring the terminal with a temporary cell reselection priority list during the random access process. The terminal stores this priority information and uses it for subsequent cell reselection decisions without requiring additional signaling. This preliminary action enables efficient data transmission and reduces the need for complex real-time coordination.
2Reliability
If cell reselection is performed according to frequency priority, then network optimization is improved, but control signal processing complexity increases
Solution Approach 1:
The base station pre-provides a temporary cell reselection priority list to the terminal during the random access procedure. The terminal stores this pre-configured priority information and uses it automatically for cell reselection decisions. This preliminary action simplifies the control signal processing by eliminating the need for complex real-time priority determination and reduces network optimization overhead.
Solution Approach 2:
The terminal autonomously performs cell reselection based on the pre-provided priority list without requiring continuous network control or complex processing. The terminal uses the stored priority information to automatically determine target cells for reselection, enabling self-service operation that simplifies control signal processing while maintaining network optimization.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention provides a method and a device for efficiently transmitting user data through a random access response message in a mobile communication system.