Repeated PDCCH Across Multiple CORESETs for Reliable DCI Reception
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Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently transmitting physical downlink control channels, particularly in high-data-demand scenarios, due to resource shortages and high-speed service demands, necessitating improved methods for reliable reception of downlink control information.
Innovation Solution
The method involves receiving and transmitting multiple identical downlink control information (DCI) through repeated physical downlink control channels (PDCCH) on different control resource sets and search spaces, ensuring redundancy and reliability in PDCCH reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple repeated PDCCH transmissions are used to improve reliability, then PDCCH reception reliability is improved, but system resource consumption increases
Solution Approach 1:
The patent applies partial action by transmitting DCI information multiple times only when reliability requirements demand it, rather than continuously. The network device transmits the same DCI on multiple PDCCH occasions when the terminal may have missed previous transmissions, providing just enough redundancy to ensure reliable reception without permanently allocating excessive resources. This resolves the contradiction by making repetition conditional and targeted rather than universal and continuous.
2Productivity
If dynamic TDD slot configuration is implemented to meet high data traffic demands, then data transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic TDD slot configuration where the network device can flexibly adjust the number and position of downlink and uplink OFDM symbols within slots based on real-time traffic conditions. This dynamic adaptation allows the system to optimize data transmission efficiency for varying traffic patterns while managing complexity through standardized procedures for configuration signaling and terminal adaptation, rather than requiring completely flexible ad-hoc negotiations.
3Length of stationary object
If beamforming and massive MIMO are deployed to extend mmWave coverage, then transmission distance is improved, but device complexity increases
Solution Approach 1:
The patent combines beamforming and massive MIMO technologies to achieve extended mmWave transmission distance. By merging these two techniques, the system leverages the directional gain of beamforming with the spatial multiplexing and diversity benefits of massive MIMO, creating a synergistic effect that extends coverage distance while managing device complexity through integrated signal processing architectures rather than separate independent systems.
Data Source
AI summary
A method, which is performed by a terminal, for receiving a Physical Downlink Control Channel (PDCCH) in a wireless communication system comprises the steps of: receiving, from a base station, configuration information about a first control resource set (CORESET); receiving, from the base station, configuration information about a second CORESET; receiving, from the base station, a first PDCCH transmitted on the first CORESET; and receiving, from the base station, a second PDCCH transmitted on the second CORESET.