Group Common PDCCH Encoding Without Parity Bits
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Solution Overview
Problem
Current methods for encoding and decoding group common control channels in 5G networks require significant power due to the use of parity bits and scrambling with radio network temporary identifiers (RNTIs), which can be inefficient.
Innovation Solution
The proposed solution involves masking information bits with a common RNTI without using parity bits, using separate encoders for the information block and RNTI, and then transmitting the masked code symbol, which reduces power requirements by eliminating the need for parity bits and scrambling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parity bits and scrambling with RNTIs are used for encoding group common control channels, then reliability of data transmission is improved, but power consumption increases
Solution Approach 1:
The patent extracts and removes the parity bit generation and scrambling operations from the encoding process. By eliminating these power-intensive operations while retaining the essential masking function using common RNTI, the solution maintains transmission reliability through the masking mechanism alone, without the need for additional parity bits for error detection and correction.
Solution Approach 2:
The patent changes the encoding parameters by using only the information block and common RNTI for masking, without incorporating parity bits or scrambling operations. This parameter change simplifies the encoding process to essential operations only, reducing computational complexity and power consumption while maintaining the core function of reliable data transmission through masking.
2Adaptability or versatility
If separate encoders are used for information block and RNTI, then encoding flexibility is improved, but device complexity increases
Solution Approach 1:
The patent segments the encoding process into two independent parts: encoding the information block and encoding the common RNTI separately. This segmentation allows each encoder to be optimized independently for its specific function, providing encoding flexibility while keeping each individual encoder component simple and manageable, thus not significantly increasing overall device complexity.
Solution Approach 2:
The patent employs universal encoder components that can handle both information block encoding and RNTI encoding with the same fundamental encoding mechanism. This multi-functionality approach allows the system to achieve encoding flexibility for different data types while using the same underlying encoder architecture, thereby avoiding proportional increases in device complexity.
Data Source
AI summary
An improved technique for encoding and decoding of data for group common control channels is provided herein. Generally, the embodiments disclosed herein involve masking the information bits of the group common PDCCH (or group common control channel information) with the common RNTI, without using parity bits, which reduces the power requirements of the transmitter and receiver. In a first embodiment, the information block and the common RNTI can each be encoded using separate encoders, and then the encoded information block can be masked with the encoded common RNTI, and the resulting code symbol can be transmitted to the group of mobile devices. In a second embodiment, an information block can be appended with bits to match a size of the common RNTI, and then be masked by the common RNTI.