Modulating Amplitude and Phase for Additional Control Signals
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Solution Overview
Problem
Conventional communication systems face challenges in transmitting and receiving additional control signals without losing bandwidth and power, especially in broadband communication systems with limited radio resources, leading to increased overhead and reduced RF-channel capacity.
Innovation Solution
A method that modulates the amplitude and phase of transmission signals in predetermined time- and frequency-resource domains to create additional control channels, allowing for the transmission of control signals without bandwidth or power loss, and enables differentiation based on Quality of Service (QoS) requirements by determining the appropriate channel structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control signals are transmitted using pre-assigned control channel radio resources, then control signal transmission is enabled, but the overhead of control channels increases and RF-channel capacity for actual data is reduced
Solution Approach 1:
The patent merges control signal transmission with data transmission by modulating control signals onto the amplitude and phase of transmission signals in predetermined time-frequency resource domains. This combining approach allows control signals to be transmitted without occupying separate dedicated control channel resources, thereby maintaining RF-channel capacity for data while ensuring reliable control signal delivery.
Solution Approach 2:
The transmission signals serve multiple functions simultaneously: they carry both data information and control signal information through amplitude and phase modulation. The predetermined time-frequency resource domains are used for both data transmission and control signal embedding, making the system more efficient by eliminating the need for separate control channel allocations.
2Adaptability or versatility
If additional control channels are generated without bandwidth or power loss, then control signal transmission capability is improved, but system complexity increases
Solution Approach 1:
The patent changes the parameters of existing transmission signals by modulating their amplitude and phase according to control signals. Instead of creating entirely new control channels, the system embeds control information by varying these fundamental signal parameters in predetermined resource domains, thereby improving control signal transmission capability while avoiding the complexity of additional channel infrastructure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach generates additional control channels without frequency or power loss, supports diverse QoS requirements, and enhances system performance by effectively transmitting and receiving control signals, even in varying channel structures.
Implementation Method 1
modulating at least one of an amplitude and a phase of the Tx signal contained in a predetermined time- and frequency-resource domain according to the additional control signal
Data Source
AI summary
A method for transmitting/receiving an additional control signal without any loss of bandwidth and power in an original Tx signal is disclosed. If the additional control signal is transmitted via the Tx signal composed of at least one of data and control signals, at least one of the amplitude and phase of the Tx signal of the time- and frequency-resource domain is modulated according to the additional control signal to be transmitted. The modulated Tx signal is transmitted to the receiver, so that the additional control signal can be transmitted irrespective of the original Tx signal. According to a modulation status of at least one of an amplitude and a phase of the Rx signal contained in the time- and frequency-resource domain, the additional control signal can be acquired.