Independent CDMA Channel Allocation for HRPD Sectors
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Solution Overview
Problem
Current CDMA channel allocation methods in HRPD systems are inefficient due to the same channels being allocated to all active sectors, leading to radio resource management inefficiencies and a lack of determination on which channels to use for control messages, which are crucial for effective data transmission.
Innovation Solution
A method for independently allocating CDMA channels to each active sector in a mobile communication system, allowing for the selection of a channel for transmitting control signals, using messages like sector parameter, route update, and traffic channel assignment to manage channel allocation efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same CDMA channel is allocated to all active sectors, then the channel allocation process is simple, but radio resource management efficiency deteriorates
Solution Approach 1:
The patent divides the CDMA channel allocation into separate independent allocations for each active sector. Instead of using a single unified channel for all sectors, each sector (serving sector and non-serving sectors) receives its own dedicated CDMA channel allocation. This segmentation allows optimized resource management per sector while maintaining overall system efficiency.
2Adaptability or versatility
If no determination is made on which CDMA channel to use for control messages, then channel selection is flexible, but control signal transmission efficiency deteriorates
Solution Approach 1:
The patent designates specific CDMA channels with particular qualities for specific purposes. Control messages are transmitted on dedicated CDMA channels that are specifically allocated for control signal transmission, while other channels are used for data traffic. This local quality differentiation ensures that control signals receive prioritized and reliable transmission resources.
Data Source
AI summary
A method for allocating CDMA channels applicable to a mobile communication system that performs communication by using two or more CDMA channels, the method comprising: for each active sector corresponding to a particular mobile station, independently allocating CDMA channels (i.e., frequency assignments) such that each active sector is allocated at least one CDMA channel; and transmitting packet data by using the allocated CDMA channel.