Random Access Parameter Allocation for Mixed-Capability Terminals

Solution Overview

Problem

Existing communication systems use the same random access parameters for all terminals, which are not optimized for terminals with different capabilities, leading to suboptimal performance, especially for terminals with poor capabilities.

Innovation Solution

Configure different random access parameters for terminals with varying capabilities and types, including specific parameters for 2-step and 4-step random access procedures, and distinguish initial access bandwidths in the frequency domain to reduce collision probability and latency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the same random access parameter is configured for all terminals, then the system complexity is reduced and configuration is simplified, but the random access performance for terminals with different capabilities deteriorates

Engineering Contradiction:

Improveconfiguration complexityVSAvoidrandom access performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies local quality by configuring different random access parameters for terminals with different capabilities. Specifically, the network device determines terminal capability information and configures appropriate random access parameters (such as preamble format, time frequency resources, power control parameters) based on each terminal's specific capabilities, ensuring that each terminal receives tailored parameters suitable for its performance characteristics rather than a uniform configuration for all terminals.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements parameter changes by dynamically adjusting random access parameters according to terminal capability information. The network device modifies key parameters including preamble format selection, time frequency resource allocation, and power control settings based on the determined terminal capabilities, thereby optimizing random access performance for diverse terminal types while maintaining systematic configuration management.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If different random access parameters are configured for terminals with different capabilities, then the random access performance is improved, but the system complexity and configuration difficulty increase

Engineering Contradiction:

Improverandom access performanceVSAvoidconfiguration complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by having the terminal report its capability information before the random access parameter configuration process. The network device receives and stores this capability information in advance, enabling it to determine appropriate parameters proactively when the terminal attempts random access, thus avoiding complex real-time decision-making during the access process itself.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback through the terminal's capability reporting mechanism. The terminal provides feedback about its capabilities to the network device, which then uses this feedback information to configure appropriate random access parameters. This feedback loop enables the system to adapt to different terminal capabilities while maintaining a structured configuration approach.

Inventive Principle:

Principle #23Feedback

3Ease of operation

If unified random access parameters are used, then the configuration process is simple, but terminals with poor capabilities cannot meet access requirements

Engineering Contradiction:

Improveconfiguration easeVSAvoidaccess performance precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent applies local quality by configuring different random access parameters for terminals with different capabilities. Specifically, the network device determines terminal capability information and configures appropriate random access parameters (such as preamble format, time frequency resources, power control parameters) based on each terminal's specific capabilities, ensuring that each terminal receives tailored parameters suitable for its performance characteristics rather than a uniform configuration for all terminals.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements parameter changes by dynamically adjusting random access parameters according to terminal capability information. The network device modifies key parameters including preamble format selection, time frequency resource allocation, and power control settings based on the determined terminal capabilities, thereby optimizing random access performance for diverse terminal types while maintaining systematic configuration management.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12621654B2Communication method and apparatus for random access, and computer-readable storage medium

Publication Date: 2026.05.05 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A communication method for random access includes: an access network device generating configuration information, the configuration information including a first random access parameter of a first terminal and a second random access parameter of a second terminal, the first terminal and the second terminal having different capabilities and/or types, and the first random access parameter and the second random access parameter being at least partially different; and the access network device sending the configuration information.