Aggregated Resource Reservation Protocol for Wireless Backhaul

Solution Overview

Problem

Current resource reservation methods in wireless communication networks, especially in Ultra-Dense Networks (UDNs), face high signaling overhead due to the need for multiple resource reservation messages to be flooded throughout the network, which is inefficient and slow, especially when considering interference-aware routing and resource allocation.

Innovation Solution

A method where a node modifies and appends additional resource reservation information to an existing resource reservation message, reducing the number of messages transmitted by including second reservation information only when necessary, and transmitting it to neighbor nodes except the original sender, thereby minimizing signaling overhead.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple resource reservation messages are flooded throughout the network to ensure complete resource information dissemination, then resource allocation reliability is improved, but signaling overhead increases and resource reservation speed decreases

Engineering Contradiction:

Improveresource allocation reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent combines multiple resource reservation messages into a single aggregated message that contains resource reservation information from multiple nodes. When a node receives resource reservation messages from different neighbors, it merges them into one consolidated message before forwarding, thereby reducing the total number of messages flooded through the network while ensuring all resource information is disseminated reliably.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The resource reservation message is designed with a universal structure that can carry resource reservation information from multiple different nodes and links within a single message framework. This multi-functional message format allows one message to serve the purpose of multiple individual messages, reducing signaling overhead while maintaining complete resource information dissemination.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple resource reservation messages are flooded throughout the network to ensure complete resource information dissemination, then resource allocation reliability is improved, but resource reservation speed decreases

Engineering Contradiction:

Improveresource allocation reliabilityVSAvoidresource reservation speed

Core Design Contradiction:

ReliabilityVSSpeed

Solution Approach 1:

The patent combines multiple resource reservation messages into a single aggregated message that contains resource reservation information from multiple nodes. When a node receives resource reservation messages from different neighbors, it merges them into one consolidated message before forwarding, thereby reducing the total number of messages flooded through the network while ensuring all resource information is disseminated reliably.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent performs preliminary aggregation of resource reservation information at intermediate nodes before the messages need to be fully disseminated throughout the network. By merging messages early in the forwarding process, the system reduces the total time required for complete resource information dissemination while maintaining reliability.

Inventive Principle:

Principle #10Preliminary action

3Loss of information

If resource reservation information is included in every message transmission to ensure complete information dissemination, then information completeness is improved, but message size and processing complexity increase

Engineering Contradiction:

Improveinformation completenessVSAvoidmessage processing complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent segments the resource reservation information by organizing it into distinct components within the message structure, allowing receiving nodes to efficiently process and extract only the relevant information for their specific context. This segmentation reduces processing complexity while maintaining information completeness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a selective forwarding mechanism where nodes include resource reservation information from multiple neighbors in an aggregated message, providing more than the minimum required information. This partial excess of information ensures completeness for all possible receivers while the structured format keeps processing manageable.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS10645686B2Resource reservation protocol for wireless backhaul

Publication Date: 2020.05.05 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

The present disclosure generally relates to the field of resource reservation. More specifically, the present disclosure relates to a technique of reserving communication resources in a wireless communication network. A method embodiment comprises: receiving (S402), by a node of the plurality of nodes, a resource reservation message including first reservation information indicating one or more communication resources for at least one link of the wireless communication network; modifying (S404), by the node, the received resource reservation message by including second reservation information indicating one or more communication resources for a link of the node in the received resource reservation message; and transmitting (S406), by the node, the modified resource reservation message to one or more neighbor nodes of the node.