Instant Data Packet Transmission via Random Access and Pre-Allocated Resources
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Solution Overview
Problem
In cellular mobile communication systems using high frequency millimeter wave bands, there is a challenge in efficiently transmitting intermittently occurring instant data packets due to signal deterioration and path loss, particularly in managing radio resources and maintaining synchronization for terminals in varying operational states.
Innovation Solution
A method and apparatus for transmitting instant messages using a random access procedure or pre-allocated uplink resources, where the terminal determines the transmission method based on its operational state, allowing for efficient transmission even in RRC inactive or idle states without maintaining uplink physical layer synchronization, and configuring different RA procedures and resources based on message size and channel quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a functional split method is applied to deploy small base stations in millimeter wave frequency band, then system coverage and capacity are improved, but radio resource management complexity increases due to intermittent instant data packet transmission
Solution Approach 1:
The patent segments the random access procedure into distinct phases: first obtaining physical layer synchronization, then transmitting instant data packets. This segmentation allows the system to handle different transmission scenarios separately, reducing the overall management complexity while maintaining high system capacity in millimeter wave networks.
Solution Approach 2:
The patent applies preliminary action by requiring the terminal to obtain physical layer synchronization before transmitting instant data packets. This preliminary synchronization step establishes a stable communication foundation, enabling efficient radio resource management for subsequent intermittent transmissions without increasing overall system complexity.
2Loss of time
If terminal transmits instant messages in RRC inactive or idle state, then transmission latency is reduced, but uplink physical layer synchronization is lost
Solution Approach 1:
The patent segments the transmission process into two independent parts: first obtaining physical layer synchronization, then transmitting the instant data packet. This segmentation enables the terminal to quickly re-establish synchronization only when needed for transmission, allowing low-latency communication in RRC inactive/idle states without requiring continuous synchronization maintenance.
Solution Approach 2:
The patent applies preliminary action by having the terminal obtain physical layer synchronization before transmitting instant data packets in RRC inactive or idle states. This preliminary step ensures that synchronization is established only when transmission is needed, reducing transmission latency while avoiding the complexity of maintaining continuous synchronization.
3Productivity
If pre-allocated uplink resources are used for instant message transmission, then transmission efficiency is improved, but resource allocation flexibility is reduced
Solution Approach 1:
The patent segments the transmission method into two options: using pre-allocated uplink resources when available for efficient transmission, or using the random access procedure when flexibility is needed. This segmentation allows the system to optimize transmission efficiency for suitable cases while maintaining the ability to adapt to various scenarios through the random access procedure.
Solution Approach 2:
The patent applies dynamics by allowing the terminal to dynamically select between pre-allocated resources and random access procedure based on current system conditions. The terminal can switch between these two methods flexibly, adapting the transmission approach to match varying network conditions and requirements.
4Reliability
If different RA procedures are configured for instant message transmission, then transmission reliability is improved, but procedure complexity increases
Solution Approach 1:
The patent segments the random access procedure into a standardized sequence of steps that can be reliably executed for instant message transmission. By breaking down the procedure into discrete, manageable steps, the system achieves improved transmission reliability without significantly increasing the complexity of implementation.
Data Source
AI summary
An instant message transmission method performed by a terminal may comprise the steps of: receiving, from a base station, configuration information related to transmission of an instant message; if an instant message has been generated, determining whether or not the transmission of the instant message is allowed; and if the transmission of the instant message is allowed, transmitting the instant message by using a random access (RA) procedure or one or more pre-allocated uplink resources (PURs).