Wireless Terminal Idle State Low Latency Data Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in providing low latency services without changing from an idle state to a connected state, especially in handling urgent data and extending resource allocation times, which is crucial for real-time applications like healthcare and traffic safety.
Innovation Solution
A method and apparatus that allow a terminal to transmit and receive low latency service data in an idle state by sending request messages to a base station, receiving resource information, and transmitting and receiving data with security checks, without the need to change to a connected state, while also extending the release time of allocated resources when additional data occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal in idle state changes to connected state to transmit or receive data, then data transmission reliability is improved, but transmission latency increases and energy consumption increases
Solution Approach 1:
The network pre-allocates resources and configures transmission parameters for the terminal while it is in idle state. When data needs to be transmitted, the terminal can immediately use the pre-configured resources without undergoing state transition, thus reducing latency while maintaining reliable transmission through pre-established communication parameters.
Solution Approach 2:
The patent implements a dynamic data transmission mechanism where the terminal can flexibly switch between idle state transmission (using pre-configured resources) and connected state transmission (using dynamic resource allocation) based on data characteristics, urgency, and resource availability, optimizing both latency and reliability adaptively.
2Reliability
If a terminal in idle state changes to connected state to transmit or receive data, then data transmission reliability is improved, but energy consumption increases
Solution Approach 1:
The network pre-allocates resources and configures transmission parameters for the terminal while it is in idle state. When data needs to be transmitted, the terminal can immediately use the pre-configured resources without undergoing state transition, thus reducing latency while maintaining reliable transmission through pre-established communication parameters.
Solution Approach 2:
The terminal maintains pre-configured transmission resources and parameters in idle state, enabling it to autonomously transmit data without requiring network-assisted state transition. This self-service capability allows the terminal to conserve energy by remaining in idle state while still performing reliable data transmission when needed.
3Loss of time
If pre-configured resources are allocated to terminal in idle state for low latency service, then transmission latency is reduced, but resource allocation complexity increases
Solution Approach 1:
The patent creates a universal pre-configuration mechanism that can serve multiple purposes: low-latency data transmission, mobility management, and resource coordination. By making pre-configured resources multi-functional and applicable to various scenarios, the system reduces overall complexity despite the added capability for idle state transmission.
Solution Approach 2:
The network dynamically adjusts pre-configuration parameters (such as resource blocks, modulation schemes, and power levels) based on terminal characteristics, service requirements, and network conditions. This parameter adaptation allows the system to optimize latency performance while managing resource allocation complexity through standardized parameter sets and adjustment rules.
Data Source
AI summary
A method and apparatus for transmitting and receiving data in a wireless communication system that supports a low latency service are provided. A terminal may transmit a request message for transmission and reception of low latency service data in an idle state to a base station and receive a response message including resource information related to transmission and reception of the low latency service data in response to the request message from the base station to transmit and receive the low latency service data.