Wireless Backhaul Resource Allocation for Millimeter Wave Networks
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Solution Overview
Problem
Conventional wireless backhaul networks using millimeter wave frequencies face challenges due to high path loss and blockage, necessitating an efficient resource allocation method to improve channel characteristics and support high data transfer rates.
Innovation Solution
A resource allocation method in a wireless network that determines the role of each node as a transmitting or receiving node based on specific transmission schemes, such as BC, MAC, K-User IC, SDD, and IBFD, within a fully connected link configuration, optimizing slot allocation and node operations to enhance network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless backhaul network using millimeter wave frequency band is constructed, then high data transfer rate is achieved, but path loss and blockage increase due to physical characteristics of the frequency band
Solution Approach 1:
The patent segments the communication resources into multiple slots within a unit time section, with each slot allocated to specific transmitting and receiving nodes. This segmentation allows systematic management of millimeter wave communications, dividing the challenging frequency band usage into manageable time slots that can be optimized for each transmission pair, thereby maintaining high data rates while managing path loss through structured resource allocation.
Solution Approach 2:
The patent implements dynamic role assignment where nodes can switch between transmitting and receiving roles across different slots based on pre-determined patterns. This dynamic approach allows the network to adaptively utilize millimeter wave resources, optimizing data transfer rates by assigning transmission roles to nodes with clear channel conditions while managing blockage effects through role switching and diverse spatial utilization.
2Productivity
If resource allocation method for fully connected link is implemented, then network efficiency is improved, but control overhead increases due to role determination for each node
Solution Approach 1:
The patent applies preliminary action by pre-determining the transmitting and receiving roles for each node in advance, based on their indices and the total number of nodes. This pre-configuration of roles eliminates the need for real-time control signaling during communication, as each node independently knows its transmission pattern. This approach significantly reduces control overhead while maintaining high network efficiency, as the role assignment is computed once and then executed without further coordination.
3Reliability
If slot allocation is optimized for each transmission scheme, then communication reliability is enhanced, but device complexity increases due to multiple transmission schemes
Solution Approach 1:
The patent utilizes parameter changes by deriving slot allocation patterns from node indices and the total number of nodes, creating deterministic transmission patterns for different schemes (BC, MAC, K-User IC, SDD, IBFD). Each scheme changes the allocation parameters differently, but all follow the same fundamental principle of pre-determined role assignment. This approach enhances communication reliability by optimizing each scheme for its specific characteristics while managing device complexity through a unified framework that adapts parameters rather than requiring separate complex control mechanisms for each scheme.
Data Source
AI summary
A resource allocating method in a wireless network performed by a first device positioned in a wireless communication network and connected to one or more second devices to constitute a fully connected link includes receiving network information from the wireless communication network, receiving information about a transmission scheme to be used for communication between the first device and the second device from the network information, obtaining information about the second device and an index of the first device, and allocating resources to be used for a communication between the first device and the one or more second devices using information related to at least one of the transmission scheme, the information about the second device, and the index of the first device.