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Group delay calibration for carrier aggregation / multi-radio access technology

A technology for network nodes and signal measurement, applied in the field of group delay calibration, which can solve problems such as non-optimal and long propagation delays

Pending Publication Date: 2021-06-08
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the receiver is performing a task that requires precise timing measurements and the beam with the highest received signal strength is affected by a longer propagation delay, then the beam with the highest received signal strength may not be optimal for the task at hand

Method used

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  • Group delay calibration for carrier aggregation / multi-radio access technology
  • Group delay calibration for carrier aggregation / multi-radio access technology
  • Group delay calibration for carrier aggregation / multi-radio access technology

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Embodiment Construction

[0035] Various aspects of the subject matter are provided in the following description and associated drawings directed to specific examples of the disclosed subject matter. In particular, various aspects described herein relate to the processing of radio frequency (RF) front-end group delay for roundtrip time (RTT) estimation. Alternatives can be devised without departing from the scope of the disclosed subject matter. Additionally, well-known elements will not be described in detail or will be omitted so as not to obscure the relevant details.

[0036] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or preferred over other aspects. Likewise, the term "aspects" does not require that all aspects include the discussed feature, advantage or mode of operation.

[0037] The terminology used herein describes particular aspects only and should...

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Abstract

Disclosed are techniques for handling of radio frequency front-end group delays for roundtrip time estimation. In an aspect, a network node transmits first and second RTT measurement signals to a user equipment and receives first and second RTT response (RTTR) signals from the UE. The network node measures the transmission times of the RTTM signals and the reception times of the RTTR signals, and the UE measures the transmission times the RTTM signals and the transmission times of the RTTR signals. The group delays of the transmit / receive chains of the network node and the UE are determined for one set of transmit / receive chains based on the first RTTM signal and first RTTR signal. The group delays of the transmit / receive chain used for the second RTTM signal and the second RTTR signal are determined relative to the group delay of the one set of transmit / receive chains.

Description

[0001] Cross References to Related Applications [0002] This patent application claims U.S. Provisional Patent Application No. 62 / 757,731, filed November 8, 2018, and titled "GROUP DELAY CALIBRATION FORCARRIER AGGREGATION / MULTI-RADIO ACCESS TECHNOLOGY," and filed November 7, 2019, titled Priority of U.S. Nonprovisional Patent Application No. 16 / 677,624 for "GROUP DELAY CALIBRATION FOR CARRIERAGGREGATION / MULTI-RADIO ACCESS TECHNOLOGY," both assigned to the assignee of the present application, the entire contents of which are expressly and expressly incorporated by reference into this article. technical field [0003] Various aspects described herein relate generally to wireless communication systems, and more particularly to group delay calibration for carrier aggregation (CA) / multi-radio access technology (multi-RAT) . Background technique [0004] The wireless communication system has gone through several generations of development, including the first generation analog ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W56/004H04W56/0055H04W64/00G01S13/765H04B17/364H04B17/104H04W88/10H04B17/14
Inventor S.阿卡拉卡兰T.罗
Owner QUALCOMM INC