Control search space overlap indication

The techniques enhance wireless communication systems by enabling multiple SSBs with offset indications and system information-based rate matching, addressing limitations in traditional systems and improving communication efficiency and connection establishment.

JP7674538B2Active Publication Date: 2025-05-09QUALCOMM INC
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Patent Information

Application Number
JP2024001365
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-11-12
Filing Date
2024-01-09
Publication Date
2025-05-09
Estimated Expiration
2039-11-13

AI Technical Summary

Technical Problem

Traditional wireless communication systems face challenges in supporting configurations with additional synchronization signal blocks (SSBs) and do not provide mechanisms for indicating physical downlink control channel (PDCCH) search space duplication, leading to limitations in mapping multiple SSBs to specific control channel resources.

Method used

The described techniques improve control search space overlapping indications by allowing base stations to transmit multiple SSBs with indications of offsets between successive SSBs, enabling user equipment (UE) to determine multiple downlink control channel locations and configure rate matching based on system information that includes a bitmap and the maximum number of SSBs available.

Benefits of technology

This approach enhances the ability of UE to establish connections with base stations by effectively handling overlapping control channel locations and supporting rate matching in scenarios with varying SSB transmissions, thereby improving communication efficiency.

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Abstract

To provide control search space overlap indications.SOLUTION: In wireless communication, user equipment (UE) may receive, from a base station, a synchronization signal block of a set of quasi-collocated synchronization signal blocks, the synchronization signal block comprising an indication of a parameter indicating information associated with a plurality of downlink control channel locations corresponding to the set of quasi-collocated synchronization signal blocks. The UE may determine, based on the parameter, the plurality of downlink control channel locations corresponding to the set of quasi-collocated synchronization signal blocks. The UE may receive a downlink grant for system information based on monitoring one or more downlink control channel locations of the plurality of downlink control channel locations. The UE may receive the system information based on the downlink grant. The UE may establish a connection with the base station based on the synchronization signal block and the received system information.SELECTED DRAWING: Figure 2
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