CN-116614777-B - Antenna configuration selection

Abstract

An apparatus, method and computer program are described, comprising determining an angular radiation space of interest for communication between a user equipment and a network node of a mobile communication system, obtaining, for each of a plurality of available antenna configurations for communication between the user equipment and the network node in the angular radiation space of interest, a positioning metric, wherein the positioning metric is based at least in part on average antenna phase center offset vector data and phase center offset variance data for the user equipment, selecting one of the plurality of antenna configurations for transmitting a positioning signal from the user equipment to the network node or for receiving a positioning signal from the network node at the user equipment based on the obtained positioning metric.

Inventors

• S. Swinson
• J. Baker Harley

Assignees

• 诺基亚技术有限公司

Dates

Publication Date

20260508

Application Date

20230216

Priority Date

20220216

Claims (15)

1. 1. An apparatus for communication, comprising means for: determining an angular radiation space of interest for communication between a user equipment and a network node of a mobile communication system; obtaining a positioning metric for each of a plurality of available antenna configurations for communication between the user equipment and the network node in the angular radiation space of interest, wherein the positioning metric is based at least in part on average antenna phase center offset vector data and phase center offset variance data for the user equipment, and Based on the obtained positioning metric, one of the plurality of antenna configurations is selected for transmitting positioning signals from the user equipment to the network node or for receiving positioning signals at the user equipment from the network node.
2. 2. The apparatus of claim 1, wherein the means for performing selecting the one of the plurality of antenna configurations is configured to select the antenna configuration of the plurality of antenna configurations having the lowest average antenna phase center offset vector data and phase center offset variance data.
3. 3. The apparatus of claim 1, further comprising means for: Determining whether a beam is identified for communication between the user equipment and the network node, and if so, defining the angular radiation space of interest as the direction of the beam, and if not, defining the angular radiation space of interest as a wide beam angular space.
4. 4. The apparatus of claim 1, wherein the positioning metric is based on antenna phase center offset vectors and variance data that have been measured or modeled in advance.
5. 5. The apparatus of claim 1, wherein the positioning metric comprises an average power weighted antenna phase center offset vector and variance data.
6. 6. The apparatus of claim 1, wherein the positioning metric comprises an antenna phase center offset vector and variance data combined into a plurality of single data points.
7. 7. The apparatus of claim 6, wherein each of the plurality of single data points comprises an average of an antenna phase center offset vector data point and a corresponding antenna phase center offset variance data point over an associated angular radiation space.
8. 8. The apparatus of claim 1, wherein the positioning metric comprises average antenna phase center offset vector data and phase center offset variance data for the user equipment for a first polarization, a second polarization, and a combination of the first polarization and the second polarization.
9. 9. The apparatus of claim 1, wherein the positioning metric comprises average antenna phase center offset vector data and phase center offset variance data for the user equipment for a first combination of a first polarization and a second polarization that are offset in phase relative to each other and a second combination of the first polarization and the second polarization that are not offset in phase relative to each other.
10. 10. The apparatus of claim 8, further comprising means for: determining whether a power signal level is sufficient for transmitting or receiving the positioning signal using an antenna configuration having a single polarization, wherein the means for selecting the one of the plurality of antenna configurations performs the selecting accordingly.
11. 11. The apparatus of claim 1, wherein the positioning metric comprises average antenna phase center offset vector data and phase center offset variance data for the user equipment in different antenna beam steering directions.
12. 12. The apparatus of claim 1, wherein the positioning signals comprise at least one of positioning reference signals and sounding reference signals.
13. 13. The apparatus according to any of the preceding claims, wherein the apparatus is the user equipment.
14. 14. A method of communication, comprising: determining an angular radiation space of interest for communication between a user equipment and a network node of a mobile communication system; obtaining a positioning metric for each of a plurality of available antenna configurations for communication between the user equipment and the network node in the angular radiation space of interest, wherein the positioning metric is based at least in part on average antenna phase center offset vector data and phase center offset variance data for the user equipment, and Based on the obtained positioning metric, one of the plurality of antenna configurations is selected for transmitting positioning signals from the user equipment to the network node or for receiving positioning signals at the user equipment from the network node.
15. 15. A computer program product comprising computer instructions that, when executed by a processor of an apparatus, cause the apparatus to: determining an angular radiation space of interest for communication between a user equipment and a network node of a mobile communication system; obtaining a positioning metric for each of a plurality of available antenna configurations for communication between the user equipment and the network node in the angular radiation space of interest, wherein the positioning metric is based at least in part on average antenna phase center offset vector data and phase center offset variance data for the user equipment, and Based on the obtained positioning metric, one of the plurality of antenna configurations is selected for transmitting positioning signals from the user equipment to the network node or for receiving positioning signals at the user equipment from the network node.

Description

Antenna configuration selection Technical Field The present description relates to antenna configuration selection for communication between a user equipment and a network node of a mobile communication system. Background Some mobile communication systems provide a plurality of antenna configurations that may be used for communication between user equipment and network nodes of the mobile communication system. There remains a need for further development in this field. Disclosure of Invention In a first aspect, the present specification describes an apparatus comprising means for determining an angular radiation space of interest for communication between a user equipment and a network node of a mobile communication system, obtaining a positioning metric for each of a plurality of available antenna configurations for communication between the user equipment and the network node in the angular radiation space of interest, wherein the positioning metric is based at least in part on average antenna phase center offset data and phase center offset variance data for a vector user equipment, selecting one of the plurality of antenna configurations for transmitting positioning signals from the user equipment to the network node or for receiving positioning signals from the network node at the user equipment based on the obtained positioning metric. In some example embodiments, the apparatus is the user equipment. The means for performing selecting the one of the plurality of antenna configurations may be configured to select the antenna configuration of the plurality of antenna configurations having the lowest average antenna phase center offset vector data and phase center offset variance data. Some example embodiments further include means for determining whether a beam for communication between the user equipment and the network node is identified and, if so, defining an angular radiation space of interest as a direction of the beam and, if not, defining an angular radiation space of interest as a wide beam angular space. The positioning metric may be based on an antenna phase center offset vector and variance data measured in advance or modeled. The positioning metric may include an average power weighted antenna phase center offset vector and variance data. The positioning metric may include an antenna phase center offset vector and variance data combined into a plurality of single data points. Further, each of the plurality of single data points may include an average of the antenna phase center offset vector data point and the corresponding antenna phase center offset variance data point over the associated angular radiation space. The positioning metric may include average antenna phase center offset vector data and phase center offset variance data for the user device for the first polarization, the second polarization, and a combination of the first polarization and the second polarization. Further, in some example embodiments, the apparatus may further comprise means for determining whether a power signal level is sufficient for transmitting or receiving the positioning signal using an antenna configuration having a single polarization, wherein the means for selecting the one of the plurality of antenna configurations performs the selecting accordingly. The positioning metric may include average antenna phase center offset vector data and phase center offset variance data for the user equipment for a first combination of first and second polarizations that are phase offset relative to each other and a second combination of first and second polarizations that are not phase offset relative to each other. Further, in some example embodiments, the apparatus may further comprise means for determining whether a power signal level is sufficient for transmitting or receiving the positioning signal using an antenna configuration having a single polarization, wherein the means for selecting the one of the plurality of antenna configurations performs the selecting accordingly. The positioning metric may include average antenna phase center offset vector data and phase center offset variance data for the user equipment in different antenna beam control directions. The positioning signals may include at least one of positioning reference signals and sounding reference signals. In the first aspect described above, the means may comprise at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause execution of the apparatus. In a second aspect, the present specification describes a method comprising determining an angular radiation space of interest for communication between a user equipment and a network node of a mobile communication system, obtaining, for each of a plurality of available antenna configurations for communication between the user equipment and the network node in the angular