Predictive Radio Access Grants for Massive IoT Congestion

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Solution Overview

Problem

The deployment of massive IoT devices in cellular networks leads to high collision probabilities in the random access process, inefficient use of network resources, excessive signaling overhead, and uncontrollable congestion due to the need for individual scheduling requests and resource allocation, which results in prolonged delays and resource waste.

Innovation Solution

A radio access management service that employs machine learning and artificial intelligence to predict resource reservations and pre-allocate radio resources, minimizing collisions and signaling overhead by using a time window method to calculate and grant access and transmission resources based on predictive metrics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If individual scheduling requests and resource allocation are used for each IoT device, then access control and resource management are maintained, but collision probability increases and signaling overhead becomes excessive

Engineering Contradiction:

Improveaccess controlVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent combines multiple individual scheduling requests and resource allocation messages into a single group-based scheduling request and unified resource allocation message. Devices in the same group share common uplink resources and receive unified grant messages, reducing the number of signaling exchanges while maintaining access control through group management and contention resolution mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements preliminary resource pre-configuration where uplink resources are pre-allocation for groups of devices. Devices are assigned predetermined resource pools and group identifiers in advance, allowing them to transmit data without individual scheduling requests for each transmission, thereby reducing signaling overhead while maintaining controlled access.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If uplink resources are increased to reduce collision probability, then access success rate improves, but available resources for uplink transmissions decrease

Engineering Contradiction:

Improveaccess success rateVSAvoiduplink transmission resources

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent segments the device population into multiple groups, each with dedicated resource pools. This segmentation allows efficient utilization of uplink resources by distributing devices across groups, reducing collisions within each group while preserving overall resource availability. Each group operates semi-independently with its own scheduling opportunities.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent allocates resources partially in advance through group-based pre-configuration rather than full individual allocation. Devices receive predetermined resource pools and group identifiers, which provides sufficient resources for typical traffic patterns without over-provisioning, thereby balancing access success rate with resource efficiency.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If random access slots are increased, then collision probability decreases, but resource allocation efficiency deteriorates

Engineering Contradiction:

Improvecollision avoidanceVSAvoidresource allocation efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent creates unified resource pools that serve multiple devices within a group, making these resources universal for the group rather than dedicated to individual devices. The group-based scheduling mechanism allows the same resource pool to be shared by multiple devices through time-division or frequency-division multiplexing, improving resource allocation efficiency while maintaining collision avoidance through coordinated access.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If individual handshaking is performed between each device and RAN, then access control is maintained, but access delays are prolonged

Engineering Contradiction:

Improveaccess controlVSAvoidaccess delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent merges multiple individual handshaking sequences into a single group-based handshaking process. The device sends a group scheduling request, the RAN responds with a unified group grant message containing resource allocations for multiple devices, and devices perform contention resolution within the group. This consolidation dramatically reduces the number of round-trip delays compared to individual handshaking for each device.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12477396B2Method, medium, and system for predictive radio access management with unified access and transmission grant messaging

Publication Date: 2025.11.18 VERIZON PATENT & LICENSING INC

AI summary

A method, a network device, and a non-transitory computer-readable storage medium are described in relation to an radio access management service. The radio access management service may include calculating a predicted total resource allocation value for a prospective access and transmission grant associated with a prospective time window, and a value indicating a number of end devices that can be supported. The service may generate and transmit an access and transmission grant message directed to end devices, based on the value, in which the message may include both random access response information and contention resolution information.