Coordinated Paging Channel Broadcasting for Macro Diversity
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Solution Overview
Problem
Conventional wireless communication systems face inefficiencies in paging due to inadequate knowledge of subscriber station location and channel quality, leading to low spectral efficiency and independent paging channel transmissions across sectors, which do not effectively utilize macro diversity.
Innovation Solution
Broadcasting quick page and regular page channels using the same time-frequency resource across sectors to achieve macro diversity, with configuration messages and forward link assignment messages being sent to access terminals to enable monitoring and resource assignment, allowing for group broadcasting and sector-specific transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If independent paging channel transmissions are used across sectors, then each sector can operate autonomously without coordination, but spectral efficiency is reduced and macro diversity is not effectively utilized
Solution Approach 1:
The patent merges paging channel transmissions across multiple sectors by having them transmit identical paging messages simultaneously on the same time-frequency resources. This combining approach enables macro diversity where multiple transmitted signals are received and combined at the mobile station, improving reception reliability without requiring complex inter-sector coordination for resource allocation
Solution Approach 2:
The patent segments the paging channel transmission into independent identical copies transmitted from each sector simultaneously. Each sector independently transmits the same paging message on allocated resources, allowing autonomous operation while achieving diversity through multiple parallel transmission paths that can be combined at the receiver
2Adaptability or versatility
If paging messages are transmitted on dedicated paging channels in each sector, then sector-specific paging can be implemented, but resource utilization is inefficient and spectral efficiency decreases
Solution Approach 1:
The patent makes the paging channel universal across sectors by having multiple sectors share the same time-frequency resources for paging transmissions. The same paging message is transmitted simultaneously from multiple sectors, allowing the system to serve multiple sectors with a unified paging resource allocation scheme rather than dedicating separate resources to each sector
Solution Approach 2:
The patent combines paging channel resources across sectors by allocating the same time-frequency resources for paging in multiple sectors. This merging of resources improves spectral efficiency while maintaining sector-specific paging capability through coordinated simultaneous transmissions that provide macro diversity benefits
3Device complexity
If separate time-frequency resources are allocated for paging channels in each sector, then independent sector management is maintained, but spectral efficiency and resource utilization are reduced
Solution Approach 1:
The patent merges the time-frequency resource allocation for paging channels across sectors by assigning the same resources in multiple sectors. This approach maintains simplified sector management while dramatically improving spectral efficiency, as the same resources serve multiple sectors simultaneously through coordinated transmissions that exploit macro diversity
Data Source
AI summary
The present invention describes transmitting the page channel, which may comprise a quick page channel and a regular page channel, and the broadcast control channel, which conveys the system information, through the same time-frequency resources across the sectors of a wireless communications network.