Carrier Segmentation for Broadcast Services in Wireless Access
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Solution Overview
Problem
In broadband wireless access systems, base stations inefficiently use radio resources by transmitting the same broadcast service data across all carrier frequencies, leading to suboptimal utilization.
Innovation Solution
A method where terminals and base stations selectively use specific carrier frequencies for broadcast services based on signal intensity and system information, allowing for efficient resource allocation by designating primary and secondary carriers and adjusting communication accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station transmits broadcast service data using all carrier frequencies, then all terminals can receive the broadcast service data, but radio resources are used inefficiently
Solution Approach 1:
The patent segments the carrier frequencies into primary carrier and secondary carriers. The base station transmits broadcast service data only on the primary carrier frequency, while secondary carriers are used for other data transmissions. This segmentation resolves the contradiction by ensuring broadcast service reliability on the primary carrier while improving overall radio resource efficiency by avoiding redundant transmissions on secondary carriers.
2Adaptability or versatility
If the base station uses all carrier frequencies for broadcast service data transmission, then broadcast service coverage is maximized, but carrier frequency resources are wasted
Solution Approach 1:
The patent applies local quality by designating specific carrier frequencies with specific functions. The primary carrier is dedicated to broadcast service data transmission to ensure coverage, while secondary carriers are allocated for other data transmissions. This localized assignment of carrier frequencies resolves the contradiction by maintaining broadcast service coverage on the primary carrier while preserving secondary carriers for additional resource utilization.
3Ease of operation
If the terminal selects carrier frequencies arbitrarily for broadcast service, then terminal flexibility is improved, but base station resource management becomes inefficient
Solution Approach 1:
The patent implements a dynamic carrier selection mechanism where the base station designates the primary carrier frequency for broadcast service data transmission and informs terminals through system information. Terminals can flexibly select the primary carrier based on signal strength measurements, while the base station maintains efficient resource management by controlling the designation of primary and secondary carriers. This dynamic approach resolves the contradiction by providing terminal flexibility in primary carrier selection while maintaining base station control over resource allocation.
Data Source
AI summary
Disclosed are a system and method for providing broadcast services in a broadband wireless access system. According to an exemplary embodiment, by allowing a terminal to receive broadcast service data using carrier information that is used to provide a broadcast service received from a base station and performing other communication except for the broadcast service using other carriers except for the carrier used to provide the broadcast service, efficient use of carrier frequency resources without any loss is achieved.