Uplink Downlink Channel Allocation in Multi-RF Wireless Systems
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Solution Overview
Problem
In multi-RF wireless access systems, the communication system is not optimized as a multi-antenna scheme is used without considering frequency channel features, leading to inefficiencies in channel allocation and control channel design.
Innovation Solution
The method involves optimizing each physical channel by selecting appropriate duplexing modes, determining maximum transmission ranks, and using different pilot structures based on frequency band features, allowing for flexible allocation of physical channels and control messages to improve throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-antenna scheme is used without considering frequency channel features, then the system can support multiple radio frequencies, but the communication system is not optimized and channel allocation efficiency deteriorates
Solution Approach 1:
The patent applies local quality by configuring different parameters (such as cyclic shift values, orthogonal cover codes, and pilot structures) for different physical channels based on their specific frequency band characteristics. Each physical channel is optimized independently according to its channel features, rather than using a uniform configuration across all channels, thereby resolving the contradiction between multi-RF support and channel allocation efficiency.
2Reliability
If blind detection is performed for control channel allocation, then the mobile station can receive control information, but the receiver complexity and power consumption increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring and notifying the mobile station of the PDCCH map information that indicates the specific physical channel allocations for control information. This allows the mobile station to directly locate and decode control channels without performing extensive blind detection across multiple possibilities, thereby reducing receiver complexity and power consumption while maintaining reliable control information reception.
3Ease of manufacture
If uniform pilot structures are used across all frequency bands, then the system implementation is simplified, but the communication system cannot be optimized for each frequency band
Solution Approach 1:
The patent applies local quality by configuring different pilot structures (such as different cyclic shift values, orthogonal cover codes, and pilot allocation patterns) for different physical channels based on their specific frequency band characteristics. This allows each frequency band to be optimized for its channel conditions, improving throughput while maintaining manageable system implementation through standardized configuration methods.
Data Source
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AI summary
A method for allocating uplink and downlink physical channels to improve throughput of a wireless access system is disclosed. A method for allocating channels to optimize a wireless access system which supports radio frequencies comprises configuring one or more physical channels in a transmitter; allocating first physical channels to a receiver considering features of the one or more physical channels; and transmitting one or more control channels to the receiver through a predetermined physical channel of the first physical channels, the control channels including configuration information of the first physical channels allocated to the receiver.