Inactive State Data Transmission via Segmented RACH Signals
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Solution Overview
Problem
Current wireless communications networks, particularly those based on New Radio (NR) access technology, face challenges in efficiently transmitting large amounts of data using the random access (RACH) procedure without transitioning to a connected state.
Innovation Solution
The implementation of a hybrid, enhanced RACH procedure that allows communications devices to transmit large data amounts in an inactive state by sending a first signal with a random access preamble and a portion of data, receiving a random access response, and then transmitting a second signal with the remaining data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the random access procedure is used for initial access from idle mode, then device complexity is reduced and ease of operation is improved, but data transmission capability is limited and cannot accommodate large data amounts
Solution Approach 1:
The patent segments the data transmission process into two parts: a first signal containing a random access preamble and a first portion of data, and a second signal containing a second portion of data. This segmentation allows the device to transmit large data amounts using the random access procedure without transitioning to connected state, resolving the contradiction between ease of operation and data transmission capability.
Solution Approach 2:
The patent merges the random access procedure with data transmission by allowing the device to transmit both the random access preamble and data portions within the same procedure framework. This combining enables large data amounts to be transmitted while maintaining the simplicity of the random access procedure, eliminating the need for state transition.
2Quantity of substance
If the device transitions to connected state to transmit large data, then data transmission capability is improved, but delay performance increases and productivity decreases
Solution Approach 1:
The patent performs preliminary action by transmitting the first signal with the random access preamble and first portion of data before transitioning to connected state. This allows the device to initiate and transmit data in the inactive state, avoiding the delay that would occur if the device had to fully transition to connected state first, thus improving productivity.
3Productivity
If the random access procedure is enhanced to transmit large data, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the data transmission into multiple signals (first signal with preamble and first portion, second signal with second portion). This segmentation enables enhanced productivity for large data transmission while maintaining the simplicity of the random access procedure, as the device only needs to handle segmented data portions rather than implementing a completely new complex transmission mechanism.
Data Source
AI summary
A communications device that, when in an inactive state, transmits a first signal comprising a random access preamble and a first portion of data to infrastructure equipment, receives a random access response message from the infrastructure equipment, and transmits a second signal comprising a second portion of the data to the infrastructure equipment.