Carrier Component Segmentation for Mobile Station Power Efficiency
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Solution Overview
Problem
The complexity and power inefficiency of mobile communication systems increase when transmitting and receiving data over multiple Carrier Components (CCs), leading to higher costs, increased memory requirements, and latency in data processing due to the need for buffering and blind decoding searches.
Innovation Solution
A method and apparatus that allow a Mobile Station (MS) to report the number of CCs it can simultaneously handle to a Base Station (BS), with the BS then transmitting monitoring CC set information to the MS, enabling efficient data transmission and reception over a reduced number of CCs, thereby reducing system complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted and received over multiple Carrier Components (CCs) to increase system capacity and data rates, then the system capacity and instantaneous peak data rate are improved, but the structural complexity of transmitter and receiver increases
Solution Approach 1:
The system segments the multiple Carrier Components into two distinct groups: a first group of CCs used for transmitting control information and a second group of CCs used for transmitting data. This segmentation allows the receiver to process control information and data separately, reducing the complexity of simultaneous processing across all CCs while maintaining the ability to utilize multiple carriers for increased system capacity.
2Power
If data is transmitted and received over multiple Carrier Components (CCs) to increase instantaneous peak data rate, then the instantaneous peak data rate is improved, but the processing latency increases due to buffering and blind decoding searches
Solution Approach 1:
The system performs preliminary action by transmitting and processing control information on a first group of CCs before data transmission on the second group of CCs. The receiver first acquires control information indicating resource allocation, then uses this information to efficiently locate and decode data without requiring extensive buffering or blind decoding searches across all CCs, thereby reducing processing latency while maintaining high data rates.
3Productivity
If data is transmitted and received over multiple Carrier Components (CCs) to distribute increased system load, then the system load distribution is improved, but the power efficiency decreases
Solution Approach 1:
The system segments CCs into control information carriers and data carriers, allowing the receiver to efficiently process control information on the first group of CCs to determine resource allocation, then selectively process data only on the allocated resources of the second group of CCs. This segmentation reduces unnecessary processing and buffering operations, improving power efficiency while maintaining the ability to distribute system load across multiple CCs.
Data Source
AI summary
A method for receiving data over a plurality of carrier components at a Mobile Station (MS) is provided. The method includes receiving, from a Base Station (BS), resource allocation information including a first allocation information indicating at least one resource allocated to a first carrier component in a first subframe and a second allocation information indicating at least one resource allocated to a second carrier component in a second subframe and receiving data, from the BS, on the at least one resource of the first carrier component and on the at least one resource of the second carrier component based on the resource allocation information.