SYSTEM AND METHOD FOR IMPROVED TOTAL SPECTRAL EFFICIENCY USING MULTIPLE TRANSMISSION AND RECEPTION POINT (mTRP) WITH COHERENT JOINT TRANSMISSION (CJT)

Smart overview of the Invention

The system enhances total spectral efficiency through a multiple transmission and reception point (mTRP) configuration that utilizes coherent joint transmission (CJT). This setup involves multiple TRPs strategically positioned to cover specific sectors, with their orientations directed away from each other. The approach aims to optimize coverage and capacity, particularly in low-frequency bands, by overcoming the limitations of traditional base station deployments.

Background

Low-frequency bands, especially those below 1 GHz, are crucial for cellular network coverage due to their low propagation and penetration loss. However, these bands face challenges in bandwidth availability and can quickly become bottlenecks. The traditional deployment of massive MIMO systems is limited by the physical size of base stations, which restricts the number of antennas that can be deployed.

Technical Implementation

The mTRP with CJT approach improves coverage and capacity by allowing multiple TRPs to transmit the same user data simultaneously, requiring precise synchronization via a backhaul. By directing transmit power from multiple TRPs in specific directions, the system achieves better receive power and diversity gain. This method also supports more simultaneous user connections, thereby increasing spectral efficiency. The configuration minimizes overlapping antenna patterns to enhance system performance.

System Advantages

The co-located mTRP configuration simplifies synchronization between TRPs, which is more complex in distributed setups. This design reduces the need for large antenna panels, making it suitable for lower frequencies like sub-1 GHz. The system's applicability extends to 5G new radio (NR) networks, utilizing Frequency Division Duplex (FDD) bands and MIMO antenna systems, and can be adapted for future network generations.

Applications and Embodiments

The disclosure includes methods for associating multiple user equipment with the mTRP configuration for simultaneous transmissions, yielding capacity gains. The system can be implemented via a non-transitory machine-readable medium with executable instructions for pairing user equipment, ensuring minimal overlap of radiation patterns. The described embodiments illustrate how the system can be integrated into existing and future communications networks, enhancing broadband, wireless, voice, and media access services.