General BSR Timer Synchronization for Wireless Backhaul
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Solution Overview
Problem
Future wireless communications networks face challenges in efficiently managing data transmission over wireless backhaul links, particularly when a large amount of data is transmitted from various communications devices and infrastructure equipment to the core network, leading to potential capacity crunches and increased latency.
Innovation Solution
The method involves configuring a general Buffer Status Report (BSR) timer among infrastructure equipment to synchronize data reporting, allowing parent nodes to allocate uplink communications resources to child nodes based on BSRs, which include assistance information and can inflate buffer size values to ensure efficient resource scheduling and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless backhaul links are used to interconnect infrastructure equipment, then network coverage and flexibility are improved, but data transmission capacity and latency are worsened due to potential capacity crunches
Solution Approach 1:
The patent implements preliminary action by configuring a general BSR timer in advance to proactively manage buffer status reporting. This timer is set before data transmission occurs, allowing the system to pre-coordinate resource allocation and prevent capacity crunches before they happen. The timer-driven mechanism ensures that buffer status is reported and resources are allocated proactively, rather than reactively responding to congestion.
Solution Approach 2:
The patent employs feedback mechanisms through Buffer Status Reports (BSRs) that provide continuous information about data buffer levels at infrastructure equipment. This feedback loop allows the network to dynamically adjust resource allocation based on actual buffer status, enabling adaptive management of backhaul capacity and preventing congestion through real-time monitoring and response.
2Productivity
If a large amount of data is transmitted from communications devices to the core network via donor infrastructure equipment, then network service capability is improved, but donor node capacity is worsened due to capacity crunches
Solution Approach 1:
The general BSR timer is configured in advance to proactively trigger buffer status reports before the donor node becomes overloaded. This preliminary action allows the system to anticipate and prepare for data transmission demands, allocating resources ahead of time to prevent capacity crunches at the donor node while maintaining high service capability.
Solution Approach 2:
BSR feedback mechanisms provide continuous information about buffer status at relay and end nodes, enabling the donor node to dynamically adjust resource allocation. This feedback ensures that the donor node can handle large data volumes reliably by responding to actual buffer conditions rather than operating at fixed capacity limits.
3Measurement precision
If BSR timers are configured individually at each infrastructure equipment, then local data reporting accuracy is improved, but network-wide synchronization is worsened leading to inefficient resource allocation
Solution Approach 1:
The patent merges individual BSR timer functions into a single network-wide general BSR timer. This unified timer is synchronized across all infrastructure equipment, ensuring that buffer status reports are generated at coordinated intervals. This combination maintains accurate local reporting while achieving network-wide synchronization, eliminating the time loss associated with unsynchronized reporting and improving overall resource allocation efficiency.
Data Source
AI summary
A method of controlling communications within a wireless communications network is provided. The method comprises in advance of transmitting the data by a child node to a donor node, configuring, by one of the donor node and a parent node, a Buffer Status Report, general BSR timer for the child node, the general BSR timer being common and synchronised among at least a subset of a plurality of infrastructure equipment, receiving, at the parent node, subsequent to expiry of the general BSR timer, a signal comprising a BSR from the child node indicating an amount of uplink data that the child node has ready to transmit to the parent node, and scheduling, by the parent node, in accordance with the BSR received from the child node, communications resources of the backhaul communications link to the child node in which the child node is to transmit the uplink data.