Base Station Local Forwarding for Disaster Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In disaster scenarios, communication infrastructure is often damaged, leading to service delays and disruptions due to the need for routing and services through upper layer networks, which can be compromised, and there is a requirement for high-reliability communication systems that ensure backward compatibility, multimode operation, and continuous communication even with single points of failure.
Innovation Solution
A method for communication that allows direct data transmission between terminals through local forwarding without passing through the access service network, enabling the establishment of an optimum route and maintaining communication even when the backbone network is disconnected from the upper layer network, by using request and response messages for allocating flow identifiers and managing service flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission routes through the access service network (ASN) and upper layer network, then routing and service management can be performed, but service delay increases and reliability decreases when backbone network is damaged
Solution Approach 1:
The patent segments the communication path into local forwarding mode (direct terminal-to-terminal communication within the same base station) and network forwarding mode (communication through ASN and upper layer network). This segmentation allows terminals to switch between local and network routes, preventing service delays when the backbone network is damaged by enabling direct local communication that bypasses the compromised network path.
Solution Approach 2:
The base station acts as an intermediary that manages two communication modes: local forwarding where it directly routes data between terminals within its coverage area, and network forwarding where it sends data through the ASN. The base station's ability to switch between these modes ensures communication reliability by providing an alternative local path when the network path is compromised.
2Productivity
If direct local forwarding is implemented between terminals, then service delay is reduced and communication reliability is improved, but network control and service management become more complex
Solution Approach 1:
The base station is designed with multi-functionality to handle both local forwarding and network forwarding modes, as well as to manage terminal communication in both scenarios. It can allocate resources, manage service flows, and control communication paths locally while maintaining compatibility with the broader network architecture. This universality allows the system to implement direct local forwarding without requiring separate dedicated infrastructure, thus improving efficiency without proportionally increasing overall system complexity.
Solution Approach 2:
The system performs preliminary actions by pre-establishing local forwarding capabilities and resource allocation mechanisms at the base station before network failures occur. The base station maintains ready-to-use local communication paths and can quickly activate them when needed, reducing service delay while managing complexity through advance preparation rather than ad-hoc responses to failures.
3Adaptability or versatility
If the system maintains backward compatibility with existing WirelessMAN-OFDMA interfaces, then interoperability is ensured, but adaptability to new local forwarding mode is constrained
Solution Approach 1:
The patent merges the existing WirelessMAN-OFDMA interface standards with the new local forwarding mode by integrating local communication protocols into the established network architecture. The base station uses standard interfaces for network communication while incorporating local forwarding capabilities that operate alongside existing protocols. This merging allows the system to maintain backward compatibility and interoperability while adding the versatility of direct local terminal communication.
Data Source
AI summary
A method for communication of a base station includes: receiving first data from a first terminal; transmitting the first data to a second terminal by local forwarding without passing through an access service network (ASN); receiving second data from the second terminal; and transmitting the second data to the first terminal without passing through the ASN.