Wireless Backhaul Synchronization Resource Allocation
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Solution Overview
Problem
In wireless backhaul networks, the automatic deployment of new base stations is complicated when they detect multiple deployed base stations, leading to potential interference due to the use of shared resources for synchronization communications, which can result in signal collisions and reduced network performance.
Innovation Solution
A method where wireless nodes determine their connectivity state and allocate orthogonal resources for synchronization communications based on this state, allowing new base stations to connect efficiently to anchor stations with direct or indirect connections to the core network, thereby reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If new base stations use shared resources for synchronization communications, then deployment is simplified, but signal collisions and interference occur
Solution Approach 1:
The resource pool for synchronization communications is segmented into multiple orthogonal resources (time slots, frequency resources, or spatial beams). Each new base station is assigned a specific segment based on its connectivity state, eliminating signal collisions while maintaining simplified deployment procedures.
Solution Approach 2:
Before synchronization communications begin, the system preliminarily determines the connectivity state of each base station and pre-assigns orthogonal resources accordingly. This preliminary resource allocation prevents signal collisions from occurring in the first place, rather than resolving them after deployment.
2Reliability
If orthogonal resources are allocated based on connectivity state, then interference is reduced, but resource management complexity increases
Solution Approach 1:
Each base station autonomously determines its own connectivity state and selects appropriate orthogonal resources from the available pool without requiring complex centralized coordination. This self-service approach reduces interference while minimizing the complexity of resource management by distributing the decision-making process.
Solution Approach 2:
The system changes the parameter of resource allocation from static shared access to dynamic orthogonal assignment based on connectivity state. By varying the allocation parameters (time, frequency, or spatial dimensions) according to base station state, interference is reduced without requiring overly complex management mechanisms.
3Area of stationary object
If multiple base stations transmit synchronization signals simultaneously, then network coverage is expanded, but signal collisions increase
Solution Approach 1:
When time and frequency resources are exhausted, the system transitions to spatial dimension by employing beamforming techniques. Base stations transmit synchronization signals in different spatial directions or using orthogonal beam patterns, enabling simultaneous transmission that expands network coverage without causing signal collisions.
Data Source
AI summary
Certain aspects of the present disclosure generally relate to wireless communication. A wireless node may determine a connectivity state of the wireless node with respect to a wireless network, may determine a set of resources available for one or more synchronization communications based at least in part on the connectivity state, may select one or more resources from the set of resources, and may transmit the one or more synchronization communications using the one or more resources. Numerous other aspects are provided.