NR Terminal Capability Reporting With Unified Type Indication
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Solution Overview
Problem
The current 3GPP standard does not define how reduced-capability terminal devices in NR systems, such as those used in IoT markets like industrial wireless sensor networks and video surveillance, should report capability parameters, leading to inefficiencies in resource usage.
Innovation Solution
A method for reduced-capability terminal devices to report their type and capability parameters, including channel bandwidth and antenna count, using a first information set, and optionally additional capability sets for power saving, coverage enhancement, etc., to reduce resource overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If reduced-capability terminal devices report all capability parameters individually, then the network device can obtain complete terminal information, but the resource overheads increase significantly
Solution Approach 1:
The patent merges multiple capability parameters (channel bandwidth, antenna quantity, power saving capability, coverage enhancement capability, etc.) into a unified terminal device type indication. Instead of reporting each parameter separately, the terminal reports a single type identifier that encompasses all these capabilities, thereby reducing resource overhead while maintaining information completeness.
Solution Approach 2:
The terminal device type indication serves as a universal parameter that simultaneously conveys multiple capability attributes. This single indicator functions as a multi-functional key that enables the network device to infer various terminal capabilities (bandwidth, antennas, power saving, coverage enhancement) without requiring separate reporting mechanisms for each.
2Measurement precision
If reduced-capability terminal devices report detailed capability parameters, then the network device can make accurate scheduling decisions, but the reporting complexity increases
Solution Approach 1:
The patent extracts the essential capability characteristics of reduced-capability terminal devices and consolidates them into a single type indication parameter. By taking out only the most defining features (bandwidth < 100 MHz, antennas < 4, and specific capability sets) and encoding them as a unified type identifier, the system achieves accurate network scheduling decisions while minimizing reporting complexity.
3Adaptability or versatility
If the terminal device reports multiple capability sets, then the network device can support diverse application scenarios, but the information overhead increases
Solution Approach 1:
The patent combines multiple capability sets (power saving capability, coverage enhancement capability, short-latency processing capability, small data transmission capability, URLLC capability) into a single terminal device type indication. This merging approach allows the network to support diverse application scenarios while avoiding the overhead of reporting each capability set separately, as the type identifier implicitly encompasses all relevant capabilities.
Data Source
AI summary
A communication method and apparatus to reduce a waiting latency in a retransmission process. A terminal device receives a first PDSCH from a network device. In response to failing to decode data carried on the first PDSCH, the terminal device sends an SRS to the network device on a first time-frequency resource. In response to the network device not receiving feedback information of the first PDSCH, or receiving feedback information of the first PDSCH that is a NACK, the network device retransmits the first PDSCH based on a result of measuring the SRS. After determining that the first PDSCH fails to be decoded, the terminal device directly sends the SRS to the network device by using the first time-frequency resource.