Hybrid White Space Network Base Station Spectrum Partitioning
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Solution Overview
Problem
Wireless network operators face limitations in providing mobile broadband services due to restricted licensed spectrum capacity, necessitating the use of unlicensed whitespace spectrum for communication, which requires new apparatus and methods to effectively manage and utilize.
Innovation Solution
A hybrid communication network system that dynamically partitions network access and communication services between licensed and unlicensed frequency bands, utilizing whitespace networks to enhance capacity, with base stations assisting in handoffs and caching whitespace information to optimize interference management and venue-specific broadcasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless network operators use licensed spectrum for communication, then reliable communication service is provided, but the network capacity is limited
Solution Approach 1:
The patent combines licensed and unlicensed spectrum resources into a unified communication system. Base stations dynamically allocate resources from both spectrum types, merging their advantages to provide both reliable service (from licensed spectrum) and enhanced capacity (from unlicensed whitespace spectrum).
Solution Approach 2:
The communication system is designed to operate universally across multiple frequency bands. The base station can provide services through licensed spectrum, unlicensed whitespace spectrum, or both simultaneously, making the system multi-functional and adaptable to different spectral conditions.
2Productivity
If unlicensed whitespace spectrum is used to increase capacity, then mobile broadband capacity is improved, but interference management complexity increases
Solution Approach 1:
The base station acts as an intermediary that manages interference between licensed and unlicensed spectrum operations. It coordinates resource allocation, monitors interference levels, and dynamically adjusts transmission parameters to mitigate interference while maximizing capacity utilization.
Solution Approach 2:
The system employs dynamic resource allocation where the base station continuously adapts its transmission strategy based on real-time spectral conditions. Frequency selection, power control, and resource block allocation are dynamically adjusted to optimize capacity while managing interference from other unlicensed spectrum users.
3Speed
If whitespace information is cached at network infrastructure devices, then information delivery speed is improved, but information accuracy may deteriorate due to outdated data
Solution Approach 1:
Whitespace information is pre-cached at base stations and network infrastructure devices before being needed. This preliminary caching enables rapid information delivery when required, while the system periodically updates the cached information to maintain accuracy and prevent staleness.
Data Source
AI summary
The described apparatus and methods provide communication services utilizing a combination of non-white space (NWS) and white space (WS) networks. For example, in an aspect, the described apparatus and methods receive, at a first base station (BS) and on a licensed frequency, a communication request for network access from a wireless access terminal (AT). The aspects also determine at least one available unlicensed frequency corresponding to a location of the wireless AT. Further, the aspects partition at least a portion of the network access for the wireless AT to be via the at least one available unlicensed frequency. Additionally, the aspects inform the wireless AT of the at least one available unlicensed frequency for use to obtain at least the portion of the network access. Additional aspects relate to NWS BS assisted handoffs of WS calls, dynamic caching of WS information, peer-to-peer WS communication, and WS BS venue-specific broadcasting.