Multi-Hop Wireless Route Determination for Backhaul Congestion
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Solution Overview
Problem
In multi-hop wireless networks, the existing methods for determining an optimum transmission route for Joint Detection face congestion issues due to the high amount of information required for Pre-demodulated Data transmission between access points, leading to inefficient backhaul link utilization.
Innovation Solution
A communication device and method that exchange information to determine an optimum multi-hop transmission route based on increased transmission data, using a control unit to manage cooperation among multiple devices, and transmit uplink signals with flags indicating coordination processing and node identification, optimizing the role of each access point and backhaul link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Pre-demodulated Data is transmitted between access points for Joint Detection, then uplink multiuser multiple-input and multiple-output (UL MU-MIMO) capability is improved, but backhaul link congestion occurs due to the large amount of information
Solution Approach 1:
The patent extracts only the necessary pre-demodulated data from the received signal, specifically the data before demodulation processing, and transmits it to other access points. This extraction approach reduces the amount of data that needs to be transmitted compared to transmitting fully processed data, while still enabling Joint Detection functionality for UL MU-MIMO.
Solution Approach 2:
The patent performs preliminary optimization by determining the optimal aggregation access point and transmission routes in advance, before actual data transmission occurs. This preliminary routing determination reduces the burden on backhaul links during actual operation by pre-planning efficient data paths.
2Ease of operation
If existing routing algorithms are used for Joint Detection, then route determination is simplified, but transmission efficiency decreases due to inappropriate routing for large data volumes
Solution Approach 1:
The patent changes the routing determination parameters by considering the specific characteristics of pre-demodulated data transmission. Instead of using generic routing metrics, the system optimizes routes based on the large data volume and specific requirements of Joint Detection, achieving both operational simplicity and high transmission efficiency.
Solution Approach 2:
The patent introduces an intermediary optimization layer that sits between the existing routing algorithm and the actual data transmission. This intermediary component adjusts and optimizes the routing decisions specifically for pre-demodulated data, bridging the gap between simple routing algorithms and the complex requirements of Joint Detection.
3Productivity
If more access points aggregate Pre-demodulated Data for Joint Detection, then wireless capacity increases, but backhaul link load increases leading to congestion
Solution Approach 1:
The patent segments the aggregation function by designating specific access points as aggregation points for pre-demodulated data, rather than having all access points participate equally. This segmentation distributes the backhaul load more effectively while still achieving the wireless capacity benefits of Joint Detection.
Solution Approach 2:
The patent performs preliminary determination of optimal aggregation access points and transmission routes before actual Joint Detection operations. This advance planning ensures that the backhaul network is prepared to handle the data load efficiently, preventing congestion while maximizing wireless capacity.
Data Source
AI summary
The present technology relates to a communication device and a communication method which make it possible to determine an optimum transmission route. Provided is a communication device including a control unit that performs control for exchanging information used to determine a multi-hop transmission route with another communication device using wireless communication, and determining an optimum transmission route based on the amount of transmission data increased at the time of performing processing by a plurality of communication devices in cooperation when the transmission route is determined based on the information. The present technology can be applied to, for example, equipment that constitutes a wireless LAN system.