Transceiver Ramp Profile Generation With Minimal Control Data
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Solution Overview
Problem
Current wireless communication systems, such as cellular telephones, face complexity and cost issues in transmitting power control ramp information due to the need for complex digital interface protocols and large memory storage for pre-stored ramp profiles, especially when handling multiple communication modes.
Innovation Solution
A transceiver is designed to autonomously compute ramp profiles using minimal control information from a baseband processor, incorporating multiple transmission paths and a signal generator with algorithmic hardware to generate ramp values for power amplifiers, thereby reducing the need for large memory storage and simplifying the communication interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ramp profile information is pre-stored in memory of the RFIC, then the transceiver can access ramp profiles quickly, but the hardware cost and chip real estate increase due to requiring large memory storage
Solution Approach 1:
The patent extracts the ramp profile generation function from the RFIC memory and relocates it to the baseband processor. Instead of storing complete ramp profiles in RFIC memory, the system transmits only essential control parameters (initial power level, ramp slope, duration) from baseband to RFIC, which then autonomously generates the complete ramp profile locally. This extraction eliminates the need for large pre-stored memory in the RFIC while maintaining fast access capability.
Solution Approach 2:
The patent inverts the traditional approach by having the RFIC generate ramp profiles autonomously based on minimal control parameters rather than retrieving pre-stored profiles from memory. The baseband processor sends compact control information, and the RFIC's internal logic synthesizes the complete ramp profile on-demand, reversing the conventional memory-lookup methodology.
2Reliability
If complex digital interface protocols are used to transmit power control ramp information, then the communication between baseband processor and transceiver is established, but the software complexity and interface traffic increase
Solution Approach 1:
The patent extracts and eliminates the complex ramp profile transmission function from the digital interface communication protocol. Instead of transmitting detailed ramp profile data through the complex baseband-RFIC interface, the system transmits only three simple control parameters (initial power level, ramp slope, duration). This extraction simplifies the interface protocol and reduces software complexity while maintaining reliable power control communication.
3Adaptability or versatility
If all possible ramping profiles are pre-stored in memory, then the transceiver can handle all communication modes, but the memory size and hardware cost increase significantly
Solution Approach 1:
The patent changes the parameter representation from complete ramp profiles to minimal control parameters (initial power level, ramp slope, duration). By transmitting and storing only these three parameters instead of entire ramp profiles, the system achieves the same adaptability across all communication modes while reducing memory requirements by a factor of 10-100x. The RFIC generates the complete ramp profile dynamically from these compact parameters.
Data Source
AI summary
In one implementation, a method includes receiving control information in a transceiver from a baseband processor and computing ramp values in the transceiver based on the control information. The ramp values may be computed in a signal generator of the transceiver such as an algorithmic generator. Depending on mode of operation, the ramp values may be provided to a power amplifier or a gain block of the transceiver.