Downlink Signal Transmission via Base Station Segmentation
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Solution Overview
Problem
Existing wireless cellular networks face inefficiencies in energy usage due to the transmission of various downlink signals by a single base station, leading to high control signaling costs and inflexible network configurations.
Innovation Solution
Different base stations transmit distinct downlink signals to the same terminal, separating and optimizing the transmission of signals such as synchronization, broadcast, paging, unicast, and multicast signals, thereby improving network energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single base station transmits all downlink signals to a terminal, then the network configuration is simple, but the network energy efficiency is low and control signaling cost is high
Solution Approach 1:
The patent divides the downlink signal transmission function into multiple base stations. Specifically, different base stations transmit different downlink signals (first downlink signal and second downlink signal) to the same terminal. This segmentation of transmission functions allows the network to optimize energy usage by distributing signal transmission across multiple base stations rather than requiring all signals to be transmitted by a single base station, thereby improving network energy efficiency while maintaining manageable configuration complexity through functional division.
2Device complexity
If a single base station transmits all downlink signals to a terminal, then the network structure is simple, but the signaling overhead is high
Solution Approach 1:
The patent segments the downlink signal transmission across multiple base stations, where the first base station transmits a first downlink signal and the second base station transmits a second downlink signal to the terminal. This segmentation reduces signaling overhead by allowing each base station to transmit only the signals it is optimized for, rather than requiring one base station to handle all signaling types. The network structure remains relatively simple through this functional distribution approach.
3Loss of energy
If different base stations transmit different downlink signals to a terminal, then the network energy efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent implements segmentation by dividing downlink signal transmission responsibilities among multiple base stations. Each base station is assigned specific downlink signals to transmit based on its capabilities and current state, allowing the network to improve energy efficiency by activating only the necessary base stations for each transmission scenario while maintaining a manageable level of configuration complexity through this structured functional division.
Solution Approach 2:
The patent employs dynamic base station selection where the network can flexibly determine which base stations transmit downlink signals based on terminal state, signal conditions, and energy efficiency requirements. This dynamic approach allows the system to adapt to changing network conditions, improving energy efficiency by activating only the minimum necessary base stations while maintaining the ability to scale complexity only when performance benefits are achieved.
Data Source
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AI summary
The present invention provides a method for transmitting a downlink signal, a method for receiving a downlink signal, a network system and a terminal. The method includes: transmitting, by a control base station, a first group of downlink signal to a terminal; and transmitting, by a data base station, a second group of downlink signal to the terminal, the first group of downlink signal is at least partially different from the second group of downlink signal. The first group of downlink signal and the second group of downlink signal enable the terminal to implement a network function according to the first group of downlink signal and/or the second group of downlink signal. Embodiments of the present invention can improve network energy efficiency.