Communications Device Quality Reporting via MPDCCH Repetition
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Solution Overview
Problem
Current wireless communications networks face challenges in efficiently supporting a wide range of devices with different data traffic profiles and types, particularly in transmitting quality information effectively within the network.
Innovation Solution
A communications device equipped with transmitter, receiver, and controller circuitry that determines when to send quality information to infrastructure equipment, performs measurements, encodes the information using a combination of signal bits and parameters, and transmits it through the wireless access interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quality information is transmitted using dedicated signaling resources, then the quality information can be transmitted reliably, but the device complexity and signaling overhead increase
Solution Approach 1:
The patent combines quality information transmission with existing uplink data transmissions by embedding quality indicators within regular data packets. This merging approach allows quality information to be transmitted reliably without requiring separate dedicated signaling resources, thereby reducing signaling overhead and device complexity while maintaining transmission reliability
Solution Approach 2:
The patent enables regular data transmission channels to serve dual purposes: transmitting both user data and quality information simultaneously. This multi-functionality allows the same signaling resources to handle multiple tasks, eliminating the need for additional dedicated quality reporting channels and reducing overall system complexity
2Measurement precision
If measurements are performed on multiple signals from infrastructure equipment, then the quality information accuracy improves, but the measurement complexity and processing time increase
Solution Approach 1:
The patent extracts essential quality metrics from multiple signals by identifying and measuring only the most relevant parameters (such as signal strength, signal-to-noise ratio, and reference signal quality). This selective extraction approach maintains measurement precision while reducing the complexity of performing and processing measurements on all available signals
Solution Approach 2:
The patent transforms multiple complex signal measurements into simplified quality indicators by changing the parameter representation. Instead of processing raw signal data from multiple sources, the system converts these into standardized quality metrics that can be easily encoded and transmitted, thereby reducing processing complexity while preserving accuracy
3Loss of information
If quality information is encoded using multiple bits per measurement, then the information granularity improves, but the transmission bandwidth and signaling overhead increase
Solution Approach 1:
The patent applies partial action by transmitting quality information at varying granularities based on network conditions and requirements. Instead of always using maximum precision (multiple bits), the system dynamically adjusts the number of bits used to represent quality information, transmitting only the necessary level of detail required for effective network optimization, thereby reducing bandwidth consumption while maintaining sufficient information granularity
Solution Approach 2:
The patent changes the parameter representation of quality information by using compact encoding schemes. Instead of transmitting raw measurement values with high precision, the system transforms these into compressed parameter representations that convey essential quality trends and variations using fewer bits, thus reducing transmission bandwidth requirements while preserving meaningful information granularity
Data Source
AI summary
A method includes determining a coverage enhanced level to be used for transmitting a random access preamble, and transmitting the random access preamble. The method also includes receiving a random access response corresponding to the transmitted random access preamble. The random access response is allocated by Machine Type Communication (MTC) Physical Downlink Control Channel (MPDCCH), and a repetition level of the MPDCCH is based on the coverage enhanced level. The method further includes transmitting a Msg3 carrying a Radio Resource Control (RRC) CONNECTION REQUEST message. The Msg3 includes a quality report indicated by one or multiple bits. The quality report provides at least one of the repetition level of the MPDCCH or an aggregation level of the MPDCCH to satisfy a hypothetical MPDCCH block error rate of 1%.