Location-Based Access Control for ProSe D2D Congestion
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Solution Overview
Problem
Current ProSe D2D communication systems face challenges in resource allocation, particularly in managing local congestion issues during direct device-to-device communication, which affects the efficiency and reliability of in-coverage and out-of-coverage scenarios.
Innovation Solution
A location information-based communication control method and system where a master base station generates access control parameters based on feedback from user equipment and small base stations, recognizing control areas to dynamically allocate resources and manage congestion by adjusting resource pools and back-off parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If contention-based resource allocation is used for ProSe D2D communication, then both RRC_Connected and RRC_idle UEs can access resources, but local congestion occurs in specific areas
Solution Approach 1:
The system segments the network into multiple control areas based on location information. Each control area is managed independently with its own access control parameters, allowing localized congestion management while maintaining overall network access capability. UEs are assigned to specific control areas based on their location, and resource allocation is optimized per area rather than globally.
Solution Approach 2:
The patent implements location-based access control where different access control parameters are applied to different geographic areas. The master base station determines control area information based on UE location and applies area-specific parameters such as back-off indicators and resource allocation settings. This allows high-density areas to have stricter control while low-density areas maintain more open access.
2Reliability
If dedicated radio resource allocation is used for direct discovery, then UEs need to stay in RRC_Connected state, but this increases device complexity and power consumption
Solution Approach 1:
The system enables UEs in RRC_idle state to perform direct discovery and communication operations autonomously without requiring continuous RRC_Connected state maintenance. UEs can independently select resources from allocated pools and execute discovery/communication functions, reducing the need for continuous network control and state management complexity.
3Ease of operation
If random resource selection is used for direct communication, then UEs can transmit without continuous network connection, but resource collision and inefficiency increase
Solution Approach 1:
The system implements feedback mechanisms where UEs report their location information and resource usage status to the master base station. The base station uses this feedback to dynamically adjust access control parameters and resource allocation strategies for different control areas, optimizing resource efficiency while maintaining simple UE operations. Back-off indicators and other control parameters are adjusted based on observed congestion patterns and resource utilization.
Data Source
AI summary
A method and system of location information based communication control is provided. The method includes step of performing an access control to one or more resources by a master base station (MBS) generating one or more access control parameters of the resource based on one or more feedback information provided by one or more communication devices (CDs), and the CDs includes one or more user equipments (UEs) and/or one or more small base stations (SBSs). The method of further includes step of recognizing a control area (CA) by the MBS based on a location information included in the feedback information, and step of delivering out by the MBS the one or more access control parameters for having a group of user equipments located in the CA to access the resources based on the access control parameters.