Early Data Transmission in Wireless User Equipment
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Solution Overview
Problem
Current wireless communication systems do not support early data transmission (EDT) during RRC Connection Establishment or RRC Connection Resume, which is essential for reducing power consumption in low-cost user equipment (UE), leading to increased power consumption due to unnecessary transmissions.
Innovation Solution
A method for UE to perform early data transmission (EDT) during the random access procedure in wireless communication systems, allowing uplink data transmission without establishing or resuming the RRC connection, thereby reducing the number of transmissions and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs normal RRC connection establishment or resumption procedure before data transmission, then the connection is reliably established, but the power consumption increases due to additional transmissions
Solution Approach 1:
The patent applies preliminary action by enabling the UE to transmit data in advance during the random access procedure (specifically in Msg3 or Msg5) before the RRC connection is fully established or resumed. This allows data to be sent earlier in the protocol sequence, eliminating the need for separate data transmission steps after connection establishment, thereby reducing the number of transmissions and power consumption while maintaining reliable connection setup
2Reliability
If the UE transmits data after RRC connection establishment, then the data transmission is reliable, but the number of transmissions increases leading to higher power consumption
Solution Approach 1:
The patent merges the data transmission function with the RRC connection establishment/resumption procedure by allowing data to be carried within the random access messages (Msg3 or Msg5). This combining of connection setup and data transmission into a single integrated process reduces the total number of separate transmissions required, thereby reducing energy loss while maintaining transmission reliability through the established protocol mechanisms
Data Source
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AI summary
Provided are a method for a user equipment (UE) to perform early data transmission (EDT) in a wireless communication, and an apparatus supporting the same. The method may include: receiving system information including a threshold for the EDT; determining whether or not a condition for initiating the EDT is satisfied, by comparing the threshold for the EDT with a size of data for transmission; if the condition is satisfied, performing the EDT; and if the condition is not satisfied, performing a radio resource control (RRC) connection establishment or resume procedure.