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Channel state information measurement and feedback for transmission mode switching

a transmission mode and information measurement technology, applied in the field of communication systems, can solve the problems of csi feedback becoming burdensome, requiring an undesirable amount of overhead, and a particular transmission mode may be used, so as to limit the complexity of blind detection, and reduce the number of possible pdcch candidates

Inactive Publication Date: 2019-12-19
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a solution for a base station to trigger dynamic switching of transmission modes for a user equipment (UE) without requiring a new connection. The base station can configure the UE with different combinations of transmission modes using specific signaling. However, this may result in considerable overhead and burden on the UE for providing corresponding channel state information (CSI) feedback. The patent further proposes a solution for dynamic and corresponding CSI feedback that improves efficient use of overhead.

Problems solved by technology

Problems may arise for a UE using a particular transmission mode if network conditions change while the UE is connected to the network.
However, CSI feedback may become burdensome and require an undesirable amount of overhead for combinations of transmission modes.

Method used

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  • Channel state information measurement and feedback for transmission mode switching
  • Channel state information measurement and feedback for transmission mode switching
  • Channel state information measurement and feedback for transmission mode switching

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Embodiment Construction

[0036]The detailed description set forth below in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.

[0037]Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements...

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Abstract

A burden may be placed on a UE to measure CSI for combination(s) of transmission modes, and reporting may create an overhead burden. Aspects presented herein enable a UE to measure and report CSI for combinations of transmission modes in a manner that reduces such burdens. A UE receives signaling from a base station for a combination of transmission modes, e.g., comprising at least a first transmission mode and a second transmission mode. Then, the UE measures at least one reference signal for CSI feedback based on the combination of transmission modes. Various examples of measurements of CSI feedback are presented.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application Ser. No. 62 / 684,675, entitled “CHANNEL STATE INFORMATION MEASUREMENT AND FEEDBACK FOR TRANSMISSION MODE SWITCHING” and filed on Jun. 13, 2018, and claims the benefit of U.S. Provisional Application Ser. No. 62 / 684,684, entitled “TRANSMISSION MODE SWITCHING” and filed on Jun. 13, 2018, which are expressly incorporated by reference herein in their entirety.BACKGROUNDTechnical Field[0002]The present disclosure relates generally to communication systems, and more particularly, to wireless communication involving transmission mode (TM) switching.INTRODUCTION[0003]Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04L1/00
CPCH04L1/0027H04L1/0026H04L5/0053H04L5/0057H04L5/005H04L5/0051H04L5/0091H04B7/0689H04B7/024H04B7/0452H04L1/003H04W72/23H04B7/0456H04B7/0626H04L1/0025H04W88/06
Inventor LIU, LERICO ALVARINO, ALBERTO
Owner QUALCOMM INC
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