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Spatial quasi co-location conflict handling

A quasi-co-location and space technology, applied in the direction of synchronization device, separation device of transmission path, wireless communication, etc.

Pending Publication Date: 2021-06-25
QUALCOMM INC
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Problems solved by technology

However, in some cases the UE may not support multiple spatial QCL relationships simultaneously (e.g. for different carriers or cells)

Method used

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  • Spatial quasi co-location conflict handling
  • Spatial quasi co-location conflict handling
  • Spatial quasi co-location conflict handling

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Embodiment Construction

[0043] In some wireless communication systems, a base station may communicate with user equipment (UE) using multiple antennas. Additionally, a base station may include multiple cells and communicate with UEs according to a carrier aggregation (CA) configuration using multiple antennas to communicate over the multiple cells. In some cases, a CA configuration may include communications on multiple cells from multiple antennas on one or more separate base stations. Based on the use of multiple antennas, there may be a quasi-co-location (QCL) relationship between one or more antenna ports corresponding to the multiple antennas. A QCL relationship may indicate that a spatial parameter of a transmission on one antenna port may be inferred from a spatial parameter of another transmission on a different antenna port.

[0044] However, for an in-band CA configuration, a UE may not simultaneously support multiple spatial QCL relationships within a cell or across cells. For example, s...

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Abstract

Methods, systems, and devices for wireless communications are described. User equipment (UE) may receive a carrier aggregation (CA) configuration for communications on a set of cells. The UE may determine that signals transmitted on the set of cells may be spatially quasi co-located based on the CA configuration and a predetermined relationship rule. The UE may determine that the signals are spatially co-located based on receiving multiple synchronization signal blocks (SSBs) that have a same SSB index, receiving a common SSB, assuming that an SSB and reference signals sourced by the SSB are spatially quasi co-located, receiving a signal from a particular cell of the set of cells, or receiving a common spatial QCL relationship during a configured period of time. Once the spatial QCL relationship is determined, the UE may receive the signals transmitted on the set of cells based on the spatial QCL relationship.

Description

[0001] cross reference [0002] This patent application claims the benefit of U.S. Patent Application No. 16 / 670,0501, filed October 31, 2019, by LEE et al., entitled "SPATIAL QUASICO-LOCATION CONFLICT HANDLING," and filed November 12, 2018 by LEE et al. The benefit of U.S. Provisional Patent Application No. 62 / 759,990, entitled "SPATIAL QUASI CO-LOCATION CONFLICT HANDLING," filed on , is assigned to the assignee of the present application. technical field [0003] The following relates generally to wireless communications, and in particular to spatial quasi-co-location (QCL) collision handling. 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 system...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L5/001H04L5/0023H04L5/0032H04L5/0048H04L5/0092H04L5/0094H04W56/001H04B7/0695H04B7/088H04W72/04
Inventor H·李P·加尔A·马诺拉科斯骆涛徐慧琳
Owner QUALCOMM INC
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