Random Access Configuration Signaling for Load Balancing

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently managing the increasing load of random access channels due to variable cell sizes and data requirements, necessitating improved allocation and signaling of random access configurations to prioritize resource usage effectively.

Innovation Solution

A base station sub-system and method for allocating random access configurations that utilize a single frequency resource with non-overlapping time slots, defined by a periodic pattern and indexed signaling, allowing for efficient allocation and signaling of random access configurations across cells, reducing signaling overhead and processing complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If random access configurations are allocated with multiple frequency resources to accommodate variable cell sizes and data requirements, then the system can handle diverse data services and variable cell sizes, but the signaling overhead and processing complexity increase

Engineering Contradiction:

Improveability to accommodate variable cell sizes and data requirementsVSAvoidsignaling overhead and processing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The random access configurations are segmented into multiple time slots that share a single frequency resource. This segmentation allows the system to handle variable cell sizes and data requirements by allocating different time slots to different cells or data types, while avoiding the complexity of managing multiple frequency resources simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A single frequency resource is made universal by allocating it across multiple time slots for different random access configurations. This multi-functional approach allows the same frequency resource to serve multiple cells and data types at different times, eliminating the need for dedicated frequency resources for each configuration and thereby reducing signaling overhead.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If random access configurations are allocated to handle increasing user load and data services, then the system capacity increases, but the waiting times and resource allocation complexity increase

Engineering Contradiction:

Improvesystem capacity to handle user loadVSAvoidwaiting times for random access

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

Random access configurations are allocated in periodic time slots rather than continuously or on-demand. This periodic structure allows the system to handle increasing user load by providing regular access opportunities, while reducing waiting times by ensuring predictable, periodic availability of random access resources instead of requiring complex real-time allocation decisions.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS9113325B2Signaling of random access preamble time-frequency location in wireless networks

Publication Date: 2015.08.18 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

Embodiments of the present disclosure provide a base station sub-system, a method of allocating random access configurations and a method of downlink signaling of random access configurations. In one embodiment, the base station sub-system is for use in a wireless communication system and includes an allocator configured to allocate random access configurations having a plurality of time slots that use a single frequency resource. Additionally, the base station sub-system also includes a transmitter configured to signal at least one index of the random access configurations and a random access receiver balancing in time the processing load of the random access detection of different cells served by the base station.