Dynamically updating transmission configuration indicator (TCI) and spatial relation information
AssigneeQUALCOMM Incorporated
InventorsQian Zhang, Yan Zhou, Tao Luo
Life of this patent
Estimating the term…
Abstract
Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for dynamically updating transmission configuration information (TCI) state and spatial relation information. For example, downlink control information (DCI) or media access control control element (MAC-CE) is used to update a large number of TCI states. As such, high efficiency, such as in terms of low overhead or usage of memory, is achieved with an increase of the upper limit of configured trigger state numbers. The DCI or MAC-CE is used to dynamically update the content in the large number of TCI states.
Claims25
A method for wireless communication by a user equipment (UE), comprising:
- receiving, via radio resource control (RRC) signaling, configuration of at least one of transmission control indicator (TCI) states or spatial relation information;
- receiving, after a switch of the UE from an old remote radio head (RRH) to a new RRH, at least one of a downlink control information (DCI) or a medium access control (MAC) control element (CE);
- and
- updating content of the TCI states or spatial relation information in response to the DCI or MAC-CE, wherein the DCI or MAC-CE indicates the content to update, and wherein the content of the TCI states or spatial relation information is updated to that of the new RRH.
A method for wireless communication by a network entity, comprising:
- configuring a user equipment (UE), via radio resource control (RRC) signaling, with at least one of transmission control indicator (TCI) states or spatial relation information;
- and
- sending, after a switch of the UE from an old remote radio head (RRH) to a new RRH, at least one of a downlink control information (DCI) or a medium access control (MAC) control element (CE) that indicates content of the TCI states or spatial relation information for the UE to update, wherein the content of the TCI states or spatial relation information is updated to that of the new RRH.
An apparatus for wireless communication by a user equipment (UE), comprising:
- a receiver configured to receive, via radio resource control (RRC) signaling, configuration of at least one of transmission control indicator (TCI) states or spatial relation information and to receive, after a switch of the UE from an old remote radio head (RRH) to a new RRH, at least one of a downlink control information (DCI) or a medium access control (MAC) control element (CE);
- and
- at least one processor configured to update content of the TCI states or spatial relation information in response to the DCI or MAC-CE, wherein the DCI or MAC-CE indicates the content to update, and wherein the content of the TCI states or spatial relation information is updated to that of the new RRH.
An apparatus for wireless communication by a network entity, comprising:
- at least one processor configured to configure a user equipment (UE), via radio resource control (RRC) signaling, with at least one of transmission control indicator (TCI) states or spatial relation information;
- and
- a transmitter configured to send, after a switch of the UE from an old remote radio head (RRH) to a new RRH, at least one of a downlink control information (DCI) or a medium access control (MAC) control element (CE) that indicates content of the TCI states or spatial relation information for the UE to update, wherein the content of the TCI states or spatial relation information is updated to that of the new RRH.
Dependencies are inferred from the claim text.