SSB and CORESET Multiplexing for Wireless Beam Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in beam switching due to insufficient cyclic prefix duration for large subcarrier spacings, leading to the need for additional switching gaps, which increases overhead and reduces system efficiency.
Innovation Solution
The technique involves multiplexing synchronization signal blocks (SSBs) and control resource sets (CORESETs) in the frequency domain to form multiplexed blocks, allowing for a single switching gap between them, and using either a common or independent reference signal, with the option of different waveforms for SSB and CORESET transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple switching gaps are inserted between SSB and CORESET transmissions on different beams, then beam switching reliability is improved, but system overhead increases and efficiency decreases
Solution Approach 1:
The patent combines SSB and CORESET transmissions into a single multiplexed block that is transmitted together on the same beam. This merging eliminates the need for separate switching gaps between SSB and CORESET transmissions, as the UE can receive both signals in one continuous transmission without requiring intermediate beam switching operations.
Solution Approach 2:
The multiplexed block serves multiple functions simultaneously: it provides synchronization signals (SSB), control information (CORESET), and system information blocks all within a single transmission structure. This multi-functionality allows the system to achieve reliable beam switching with a single switching gap rather than multiple separate gaps.
2Reliability
If cyclic prefix duration is increased to accommodate large subcarrier spacings, then beam switching reliability is improved, but transmission efficiency decreases
Solution Approach 1:
By merging SSB and CORESET into a single multiplexed block transmitted on the same beam, the patent eliminates the need for extended cyclic prefix durations that would be required if separate transmissions used different beams. The single beam transmission allows for a single switching gap that suffices for the entire multiplexed block.
Solution Approach 2:
The patent changes the transmission parameters by using the same beam for both SSB and CORESET within a multiplexed block, rather than using different beams. This parameter change allows the cyclic prefix duration to remain optimized for transmission efficiency while still providing sufficient time for beam switching through a single switching gap.
3Adaptability or versatility
If SSB and CORESET use different waveforms, then signal compatibility is improved, but processing complexity increases
Solution Approach 1:
The patent merges SSB and CORESET into a single multiplexed block that can utilize a common waveform structure. By transmitting both signals together on the same beam with a single switching gap, the system reduces processing complexity compared to handling separate transmissions with different waveforms on different beams.
Data Source
AI summary
Methods, systems, and devices for wireless communications provide techniques for multiplexing, in a frequency domain, a synchronization signal block (SSB) and a control resource set (CORESET) to form a multiplexed block that is transmitted using a set of symbols. A base station may transmit multiple multiplexed blocks using multiple different beams with a switching gap provided between each multiplexed block that allows for switching of radio frequency (RF) components between different beams. The switching gap is longer than a duration of a cyclic prefix (CP) that is associated with each symbol of the set of symbols of each multiplexed block. Within one or more of the multiplexed blocks, an associated SSB may use a different waveform than the CORESET. The multiplexed blocks may use a common reference signal for both the SSB and CORESET.