Wireless Backhaul Resource Inversion for Remote Base Stations
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Solution Overview
Problem
In wireless communication networks, establishing a wireless backhaul link between a remote base transceiver station (BTS) and the core radio access network can divert valuable air interface resources from serving user devices, especially during peak loads, reducing the quality of service for wireless client devices.
Innovation Solution
The remote BTS is configured to assign air interface resources for a wireless backhaul link to the core radio network, rather than relying on the core BTS to allocate these resources, using a wireless server module to establish a packet-data connection with the core network, thereby preserving resources for direct user device service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the core BTS assigns air interface resources for wireless backhaul link, then the backhaul connection is established, but valuable air interface resources are diverted from serving user devices, reducing quality of service for wireless client devices
Solution Approach 1:
The patent inverts the traditional assignment relationship by having the remote BTS (acting as a base station) assign air interface resources to the core BTS (acting as a mobile station), rather than the core BTS assigning resources to the remote BTS. This role reversal allows the core BTS to preserve its air interface resources for serving user devices while still establishing a reliable wireless backhaul connection.
2Area of stationary object
If the remote BTS is located at a distance from the core network, then coverage area is expanded, but the cost and difficulty of providing landline backhaul connection increases
Solution Approach 1:
The patent replaces the mechanical/physical landline backhaul connection system with a wireless communication system. By establishing a wireless packet-data connection between the core BTS and remote BTS, the solution eliminates the need for physical cable installation over long distances, thereby expanding coverage area while reducing installation cost and difficulty.
3Reliability
If the serving BTS reserves air interface resources for wireless backhaul link, then the wireless backhaul connection is maintained, but the serving BTS cannot fully serve wireless client devices during heavy load
Solution Approach 1:
The patent resolves this contradiction by inverting the resource assignment roles: the remote BTS (with available resources) assigns air interface resources to the core BTS for backhaul communication, rather than the serving BTS reserving its own limited resources. This allows the serving BTS to maintain full service capacity for client devices while the remote BTS sustains the backhaul link using its own resources.
Data Source
AI summary
A mechanism for providing a wireless backhaul connection between a remote base transceiver station (BTS) and core radio access network (RAN) equipment such as a base station controller (BSC) for instance. The remote BTS will be provided with wireless server logic, such as a cell site modem (CSM), the RAN equipment will be provided with wireless client logic, such as a mobile station modem (MSM), and the wireless server logic of the remote BTS will be arranged to serve the wireless client logic of the RAN equipment with a packet-data connection for use to carry backhaul communications between the remote BTS and the RAN equipment. Advantageously, limited air interface resources of the core RAN equipment can thus be preserved for directly serving wireless client devices, as limited air interface resources of the wireless client logic at the remote BTS are instead (or in addition) allocated for the backhaul communication.