Buffer Status Reporting for Flexible Relay UE Resource Allocation

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Solution Overview

Problem

In LTE communication systems, remote and relay UEs face inflexibility in acquiring resources for data transmission, limiting the efficiency and flexibility of resource allocation.

Innovation Solution

A method and apparatus for resource request and allocation that involves a remote UE sending a first buffer status report (BSR) to a network device to request resources for both data transmission to a relay UE and from the relay UE to the network device, with the network device allocating and notifying the UEs accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate resource requests are used for remote UE and relay UE data transmission, then resource allocation is straightforward, but resource acquisition flexibility and efficiency deteriorate

Engineering Contradiction:

Improveresource acquisition flexibilityVSAvoidresource request process complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the resource requests for remote UE data transmission and relay UE data transmission into a single first buffer status report (BSR). The remote UE sends one BSR that simultaneously requests resources for both its own uplink transmission to the relay UE and the relay UE's uplink transmission to the network device, thereby improving resource acquisition flexibility and reducing the number of separate request processes.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The first BSR serves multiple functions: it requests resources for the remote UE's data transmission to the relay UE, requests resources for the relay UE's data transmission to the network device, and enables the network device to allocate resources for both transmission directions through a single report mechanism.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If multiple separate resource requests are sent, then each resource allocation is precise, but time consumption and signaling overhead increase

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidresource request time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent merges multiple resource requests into a single first BSR message. Instead of the remote UE sending separate BSRs for its own transmission and the relay UE's transmission, it sends one combined BSR that includes buffer status information for both, thereby reducing signaling overhead and time consumption while maintaining allocation precision.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The remote UE performs preliminary action by including buffer status information for both its own transmission and the relay UE's transmission in a single BSR report before the network device needs to make resource allocation decisions, enabling more efficient processing and reducing overall request time.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12581489B2Resource request method, allocation method, and acquisition method

Publication Date: 2026.03.17 VIVO MOBILE COMM CO LTD

AI summary

A resource request method includes: sending a first buffer status report (BSR) to a network device, the first BSR being used for requesting a second resource from the network device, and the second resource being a resource used for data transmission from a relay user equipment to the network device.