Self-Backhauled Network Traffic Management via Capacity Requests
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Solution Overview
Problem
In self-backhauled networks, access and backhaul links compete over the same radio resource pool, leading to network overload and congestion, especially in multi-hop deployments, which affects user experience and radio resource utilization.
Innovation Solution
A radio base station is configured to allocate capacity for both access and backhaul traffic, with a transmitter to send donor requests to adjacent stations, a receiver to handle responses, and a routing unit to select an optimal backhaul route based on granted data rates, ensuring efficient traffic management and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If radio base station uses its own radio resources for backhaul traffic in self-backhauled network, then cost-effective backhaul solution is achieved, but access and backhaul links compete over the same radio resource pool leading to network overload and congestion
Solution Approach 1:
The patent segments the radio resources into dedicated access resources and dedicated backhaul resources, preventing competition between access and backhaul links. This segmentation allows independent management and allocation of resources, eliminating the congestion problem while maintaining the cost-effective self-backhauled architecture.
Solution Approach 2:
The patent implements dynamic resource allocation where the base station can flexibly adjust the amount of resources allocated to backhaul versus access traffic based on current network conditions, traffic demands, and priority requirements. This dynamic adjustment prevents network overload while maintaining cost-effectiveness.
2Reliability
If more backhaul capacity is allocated to multi-hop relayed eNBs, then backhaul connectivity is improved, but access traffic resources are reduced due to competition over the same radio resource pool
Solution Approach 1:
The patent segments radio resources into separate access and backhaul resource pools, allowing independent allocation. This ensures that backhaul connectivity can be enhanced without compromising access traffic capacity, as each has dedicated resources that do not compete with the other.
Solution Approach 2:
The patent changes the resource allocation parameters by introducing separate resource pools with different allocation strategies. Backhaul resources can be allocated based on connectivity requirements while access resources are allocated based on user demand, eliminating the trade-off between the two.
3Adaptability or versatility
If radio base station allocates part of its capacity to backhaul traffic, then self-backhauled network is formed, but network overload occurs when access traffic increases
Solution Approach 1:
The patent segments the total capacity into dedicated backhaul capacity and dedicated access capacity. This segmentation allows the base station to maintain self-backhauled network capability while preventing access traffic from overloading the backhaul resources, as each operates in its own resource pool.
Solution Approach 2:
The patent implements dynamic resource allocation that can adjust the split between backhaul and access resources based on real-time network conditions. When access traffic increases, the system can dynamically allocate more resources to access while maintaining sufficient backhaul capacity, preventing network overload.
Data Source
AI summary
The present invention describes a radio base station and a method for integrated access and backhaul by using backhaul capacity requests. The radio base station is configured to allocate a first part of its capacity to access traffic and a second part of its capacity to backhaul traffic. It is further configured to form a self-backhauled network with a plurality of other radio base stations and select a backhaul route through the self-backhauled network for uplink and downlink backhaul traffic.