Waveform Capability Signaling for UE-Base Station Compatibility
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Solution Overview
Problem
There is a need for improved coordination between user equipment (UE) and base stations in wireless communication systems to ensure compatibility and effective communication using various waveforms such as OFDM, SC-FD, and SC-TD, particularly in frequency ranges like FR4, to avoid failed communications due to unsupported waveforms.
Innovation Solution
Techniques and apparatuses enable UE and base stations to coordinate the use of multiple waveforms by exchanging indications of supported waveforms, allowing them to determine compatibility and selectively communicate using compatible waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple waveform types (OFDM, SC-FD, SC-TD) are supported to improve adaptability, then waveform compatibility and communication reliability improve, but device complexity and coordination overhead increase
Solution Approach 1:
The base station performs preliminary action by transmitting waveform capability indications to the UE before actual communication occurs. This allows the UE to determine compatible waveforms in advance, ensuring reliable communication while avoiding the complexity of real-time waveform negotiation and selection during data transmission.
2Adaptability or versatility
If waveform capability indications are transmitted to improve communication compatibility, then coordination between UE and base station improves, but signaling overhead and network traffic increase
Solution Approach 1:
The invention applies partial action by transmitting only the necessary waveform capability indications from the base station to the UE, rather than exchanging complete capability sets in both directions. This reduces signaling overhead while providing sufficient information for the UE to determine compatible waveforms and establish reliable communication.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of one or more waveforms supported by a base station, wherein the one or more waveforms include at least one of an orthogonal frequency division multiplexing (OFDM) waveform, a single carrier frequency domain (SC-FD) waveform, or a single carrier time domain (SC-TD) waveform. The UE may determine whether the UE is capable of communicating with the base station based at least in part on the indication. The UE may selectively communicate with the base station using at least one waveform of the one or more waveforms based at least in part on the determination. Numerous other aspects are provided.