CN-122029747-A - Beam management triggering caused by polarization imbalance due to UE housing and protective cover

Abstract

Beam management triggering due to polarization imbalance caused by UE housing and protective cover is described. An apparatus is configured to perform a signaled polarization imbalance measurement for a UE external cover or housing. The apparatus is configured to switch to a set of beam weights for communication between the UE and the network node for polarization imbalance mitigation. The apparatus is configured to communicate with a network node based on the set of beam weights. The other apparatus is configured to transmit, for the UE, a signaling for a polarization imbalance measurement for a UE external cover or housing. The apparatus is configured to receive a beamforming indication from a UE, the beamforming indication indicating a request to switch to a set of beam weights for polarization imbalance mitigation. The apparatus is configured to communicate with the UE based on the set of beam weights.

Inventors

• 5. Lagarvan
• S. Adiberry
• M. A. Tasuji
• LI JUANYI

Assignees

• 高通股份有限公司

Dates

Publication Date

20260512

Application Date

20241007

Priority Date

20231102

Claims (20)

1. 1. An apparatus for wireless communication at a User Equipment (UE), the apparatus comprising: At least one memory, and At least one processor coupled to the at least one memory and configured, based at least in part on information stored in the at least one memory, alone or in any combination, to: Performing at least one polarization imbalance measurement of at least one signaling, wherein the at least one polarization imbalance measurement is associated with an outer cover or housing of the UE; Switching to a set of beam weights for communication between the UE and a network node for mitigating polarization imbalance associated with the at least one polarization imbalance measurement, and Communicate with the network node based on the set of beam weights.
2. 2. The apparatus of claim 1, wherein to switch to the set of beam weights, the at least one processor is configured to, alone or in any combination: One or more beam weights of the set of beam weights are calculated based on the at least one polarization imbalance measurement prior to switching to the set of beam weights.
3. 3. The apparatus of claim 1, wherein the at least one processor, alone or in any combination, is further configured to: A beamforming indication is sent to the network node, the beamforming indication indicating the set of beam weights for mitigating the polarization imbalance associated with the at least one polarization imbalance measurement.
4. 4. The apparatus of claim 3, wherein the at least one processor is further configured, alone or in any combination, to: at least one of a Transmit Configuration Indicator (TCI) state change or a beam switch indication associated with the set of beam weights is received from the network node and based on the beam forming indication.
5. 5. The device of claim 1, wherein the set of beam weights comprises at least one of a first beam weight associated with a first polarization or a second beam weight associated with a second polarization orthogonal to the first polarization.
6. 6. The apparatus of claim 5, wherein at least one of the first beam weight or the second beam weight is associated with a UE beam corresponding to a respective network node beam used for the communication.
7. 7. The apparatus of claim 6, wherein the at least one signal transmission comprises one or more reference signals, wherein the at least one polarization imbalance measurement is associated with a signal strength difference of the one or more reference signals on the first polarization and the second polarization.
8. 8. The apparatus of claim 1, wherein the at least one polarization imbalance measurement is based on at least one of a material composition of the outer cover or housing, a dielectric constant of the outer cover or housing, a material thickness of the outer cover or housing, a carrier frequency range of operation, a set of housing properties of the UE, a UE antenna array size, an inter-antenna element spacing at the UE, one or more steered beam properties, or a direction of interest associated with beamforming.
9. 9. The apparatus of claim 1, wherein to switch to the set of beam weights, the at least one processor is configured to switch to the set of beam weights based on at least one of: comparison of the at least one polarization imbalance measurement with an imbalance threshold condition, or A UE beamforming configuration is indicated to switch from an initial set of beam weights associated with the at least one signaling to the set of beam weights.
10. 10. The apparatus of claim 1, wherein the at least one processor, alone or in any combination, is further configured to: transmitting a signal request to the network node for the at least one signal transmission associated with the at least one polarization imbalance measurement, and The at least one signaling is received from the network node based on the signaling request.
11. 11. The apparatus of claim 10, wherein the at least one signaling is associated with an initial set of beam weights based on a finite codebook.
12. 12. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor, wherein the at least one processor is further configured, alone or in any combination, to: Providing, via the transceiver, a reporting result associated with switching to the set of beam weights to the network node, wherein the reporting result indicates at least one of a polarization imbalance improvement, a two-layer spectral efficiency improvement, or the at least one polarization imbalance measurement.
13. 13. An apparatus for wireless communication at a network node, the apparatus comprising: At least one memory, and At least one processor coupled to the at least one memory and configured, based at least in part on information stored in the at least one memory, alone or in any combination, to: Transmitting, for a User Equipment (UE), at least one signaling for at least one polarization imbalance measurement associated with an outer cover or casing of the UE; receiving a beamforming indication from the UE, the beamforming indication indicating a request to switch to a set of beam weights for mitigating a polarization imbalance associated with the at least one polarization imbalance measurement, and Communicate with the UE based on the set of beam weights.
14. 14. The apparatus of claim 13, wherein the at least one processor, alone or in any combination, is further configured to: At least one of a Transmit Configuration Indicator (TCI) state change or a beam switch indication associated with the set of beam weights is transmitted for the UE and based on the beam forming indication.
15. 15. The apparatus of claim 13, wherein the set of beam weights comprises at least one of a first beam weight associated with a first polarization or a second beam weight associated with a second polarization orthogonal to the first polarization.
16. 16. The apparatus of claim 15, wherein at least one of the first beam weight or the second beam weight is associated with a UE beam corresponding to a respective network node beam for the communication; Wherein the at least one signal transmission comprises one or more reference signals, wherein the at least one polarization imbalance measurement is associated with a signal strength difference of the one or more reference signals on the first polarization and the second polarization, or Wherein the at least one polarization imbalance measurement is based on at least one of a material composition of the outer cover or housing, a dielectric constant of the outer cover or housing, a material thickness of the outer cover or housing, a carrier frequency range of operation, a set of housing properties of the UE, a UE antenna array size, an inter-antenna element spacing at the UE, one or more steered beam properties, or a direction of interest associated with beam forming.
17. 17. The apparatus of claim 13, wherein to switch to the set of beam weights, the at least one processor is configured to switch to the set of beam weights based on at least one of: comparison of the at least one polarization imbalance measurement with an imbalance threshold condition, or A UE beamforming configuration is indicated to switch from an initial set of beam weights associated with the at least one signaling to the set of beam weights.
18. 18. The apparatus of claim 13, wherein the at least one processor, alone or in any combination, is further configured to: A signal request for the at least one signaling associated with the at least one polarization imbalance measurement is received from the UE, wherein transmitting the at least one signaling is based on the signal request, wherein the at least one signaling is associated with an initial set of beam weights based on a finite codebook.
19. 19. The apparatus of claim 13, further comprising a transceiver coupled to the at least one processor, wherein the at least one processor is further configured, alone or in any combination, to: a reporting result associated with switching to the set of beam weights is received from the UE via the transceiver, wherein the reporting result indicates at least one of a polarization imbalance improvement, a two-layer spectral efficiency improvement, or the at least one polarization imbalance measurement.
20. 20. A method of wireless communication at a User Equipment (UE), the method comprising: Performing at least one polarization imbalance measurement of at least one signaling, wherein the at least one polarization imbalance measurement is associated with an outer cover or housing of the UE; Switching to a set of beam weights for communication between the UE and a network node for mitigating polarization imbalance associated with the at least one polarization imbalance measurement, and Communicate with the network node based on the set of beam weights.

Description

Beam management triggering caused by polarization imbalance due to UE housing and protective cover Cross Reference to Related Applications The present application claims the benefit of U.S. non-provisional patent application serial No. 18/500,748, entitled "BEAM management triggering (BEAM MANAGEMENT TRIGGERS DUE TO POLARIZATION IMBALANCE WITH UE CASE AND COVER) due to polarization imbalance by UE housing and protective cover," filed on month 11, 2023, the entire contents of which are expressly incorporated herein by reference. Technical Field The present disclosure relates generally to communication systems, and more particularly to wireless communication utilizing beamforming. Introduction to the invention Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing the available system resources. Examples of such multiple-access techniques include Code Division Multiple Access (CDMA) systems, time Division Multiple Access (TDMA) systems, frequency Division Multiple Access (FDMA) systems, orthogonal Frequency Division Multiple Access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems. These multiple access techniques have been employed in various telecommunications standards to provide a common protocol that enables different wireless devices to communicate at the urban, national, regional, and even global levels. One example telecommunications standard is 5G New Radio (NR). The 5G NR is part of the ongoing mobile broadband evolution promulgated by the third generation partnership project (3 GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the internet of things (IoT)) and other requirements. The 5G NR includes services associated with enhanced mobile broadband (eMBB), large-scale machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. Further improvements in the 5G NR technology are needed. Furthermore, these improvements may also be applicable to other multiple access techniques and telecommunication standards employing these techniques. Disclosure of Invention The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary does not identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. In an aspect of the disclosure, a method, computer-readable medium, and apparatus are provided. The apparatus may include a User Equipment (UE), and the method may be performed at/by the UE. The apparatus is configured to perform at least one polarization imbalance measurement of at least one signaling, wherein the at least one polarization imbalance measurement is associated with an outer cover or housing of the UE. The apparatus is also configured to switch to a set of beam weights for communication between the UE and the network node for mitigating a polarization imbalance associated with the at least one polarization imbalance measurement. The apparatus is also configured to communicate with a network node based on the set of beam weights. In this aspect, the method includes performing at least one polarization imbalance measurement of at least one signaling, wherein the at least one polarization imbalance measurement is associated with an outer cover or housing of the UE. The method further includes switching to a set of beam weights for communication between the UE and the network node for mitigating polarization imbalance associated with the at least one polarization imbalance measurement. The method also includes communicating with a network node based on the set of beam weights. In an aspect of the disclosure, a method, computer-readable medium, and apparatus are provided. The apparatus is configured to transmit at least one signaling for at least one polarization imbalance measurement associated with an external cover or housing of the UE for the UE. The apparatus is also configured to receive a beamforming indication from the UE, the beamforming indication indicating a switch to a set of beam weights for mitigating a polarization imbalance associated with the at least one polarization imbalance measurement. The apparatus is also configured to communicate with the UE based on the set of beam weights. In this aspect, the method includes transmitting at least o