Uplink Random Access Latency Reduction via Configuration Mapping
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Solution Overview
Problem
Existing communication systems face high latency in contention-based random access processes, making them unsuitable for latency-sensitive scenarios due to the large number of steps involved.
Innovation Solution
Establishing a correspondence between uplink configurations and random access configurations allows terminals to send uplink data and preambles in two steps, reducing latency and signaling overheads by enabling the network device to process uplink data based on this correspondence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal sends uplink data and preamble separately through multiple steps in the contention-based random access process, then the random access procedure is complete and reliable, but the communication latency increases and the process complexity increases
Solution Approach 1:
The patent combines the uplink data transmission and random access preamble transmission into a single step by establishing a correspondence between uplink configuration and random access configuration. The terminal sends both the preamble and uplink data together in one message (Msg3) to the network device, eliminating the need for separate transmission steps and reducing the overall random access latency while maintaining procedural reliability
Solution Approach 2:
The patent applies preliminary action by pre-establishing the correspondence between uplink configuration and random access configuration before the actual random access process. The network device configures and indicates this correspondence to the terminal in advance, allowing the terminal to prepare and send both preamble and uplink data together without requiring additional configuration steps during the random access procedure
Data Source
AI summary
Embodiments of this application provide a communication method and apparatus, and a computer storage medium, to reduce communication latency between a terminal and a base station, and improve a capability of adapting to a latency-sensitive scenario. The method provided in this application includes a terminal that receives at least one uplink configuration and at least one random access configuration from a network device. The uplink configuration is used to indicate a parameter for sending uplink data, and the random access configuration is used to indicate a parameter for sending a preamble. The at least one uplink configuration includes a first uplink configuration, the at least one random access configuration includes a first random access configuration, and there is a correspondence between the first uplink configuration and the first random access configuration.