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Techniques for updating reference signals

A reference signal and parameter technology, applied in the field of updating reference signals, can solve problems such as inefficient communication and system delay

Pending Publication Date: 2021-12-14
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since various system parameters associated with the reference signal may change more frequently than the reception of this signaling, reconfiguring the reference signal using semi-static signaling techniques can result in system delays and inefficiencies communication

Method used

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  • Techniques for updating reference signals
  • Techniques for updating reference signals
  • Techniques for updating reference signals

Examples

Experimental program
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example 10

[0208] Example 10 is a method for wireless communication, comprising: receiving a first message indicating a first set of reference signal resources configured for a path loss reference signal, and based on a change in the first set of reference signal resources, receiving the indication is changed A second message configuring the second reference signal resource set for the path loss reference signal, where the second message includes one or more of MAC-CE or DCI.

[0209] In Example 11, the method of Example 10 may include overwriting the first set of reference signal resources with the second set of reference signal resources based on receiving the second message, and based on the second reference signal associated with the path loss reference signal resource set to estimate the path loss for the uplink bandwidth portion.

[0210] In Example 12, the method of Examples 10-11 may include the first message comprising an RRC message for uplink power control.

[0211] In Exampl...

example 15

[0213] Example 15 is a method for wireless communication, comprising: receiving a message indicating a spatial relationship reference signal associated with an uplink beam, determining whether a path loss reference signal corresponding to the uplink beam is configured, and based on It is determined that the path loss reference signal is not configured to monitor the spatial relationship reference signal for path loss estimation.

[0214] In Example 16, the method of Example 15 may include determining that the spatially related reference signal includes a path loss reference signal based on determining that a path loss reference signal may not be configured, wherein the path loss estimate may be used for uplink power control.

[0215] In Example 17, the method of Examples 15-16 may include the spatial relationship reference signal corresponding to the set of physical uplink control channel resources.

[0216]In Example 18, the method of Examples 15-17 may include the spatial re...

example 21

[0219] Example 21 is a method for wireless communication, comprising: determining a configuration of a first QCL parameter associated with the CORESET and a reference signal, determining that the first QCL parameter associated with the CORESET has changed to be different from that of the first QCL parameter The second QCL parameter, which identifies an updated configuration of the reference signal based on a change in the first QCL parameter associated with the CORESET, the updated configuration uses the second QCL parameter to configure the reference signal, and via the MAC-CE or DCI One or more to send the updated configuration of the reference signal.

[0220] In Example 22, the method of Example 21 may include selecting a periodic CSI-RS as the reference signal, wherein the configuration indicates that the periodic CSI-RS may be used for beam failure detection.

[0221] In Example 23, the method of Examples 21-22 may include: selecting one or more of semi-persistent CSI-RS...

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Abstract

Methods, systems, and devices for wireless communications are described. The described techniques provide for dynamic updates to beam failure detection (BFD) reference signals (RSs) and path loss RS using medium access control-control element (MAC-CE) or downlink control information (DCI). For example, the quasi co-location (QCL) of periodic CSI-RS may be dynamically updated by the MAC-CE or DCI when the periodic CSI-RS is for BFD RS. Also, a semi-persistent CSI-RS or aperiodic CSI-RS may act as a BFD RS. An enhanced update procedure may be used to update the path loss RS dynamically using MAC-CE or DCI. In some cases, the path loss RS parameters updated via MAC-CE or DCI may overwrite the previously RRC configured path loss RS parameters. In another example, if the path loss RS is not configured, then the path loss RS by default may be the spatial relation reference signal of the corresponding uplink beam.

Description

[0001] cross reference [0002] This patent application claims the benefit of U.S. Patent Application No. 16 / 860,036, filed April 27, 2020, by ZHOU et al., entitled "TECHNIQUES FORUPDATING REFERENCE SIGNALS"; The benefit of U.S. Provisional Patent Application No. 62 / 843,330 for "TECHNIQUES FOR UPDATING REFERENCE SIGNALS"; each of these applications is assigned to the assignee of the present application. technical field [0003] The following relates generally to wireless communications and, more specifically, to techniques for updating reference signals. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems are capable of supporting communication with multiple users by sharing available system resources (eg, time, frequency, and power). Examples of such multiple-access systems include fourth-generation (4G) systems, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0048H04L5/0091H04W56/001H04W16/28H04W76/19H04W80/02H04W72/23H04W52/242H04W52/146H04B7/0695H04L5/0051H04L25/0226H04W72/21
Inventor 周彦骆涛R·何S·布吕克P·舍拉吉
Owner QUALCOMM INC