Adaptive Sector Configuration of an Adaptive Antenna System

Patent metadata

Field	Value
Publication number	US-2018041908-A1
Application number	US-201515549273-A
Country	US
Kind code	A1
Filing date	Mar 3, 2015
Priority date	Mar 3, 2015
Publication date	Feb 8, 2018
Grant date	—

Abstract

The present disclosure relates to methods, arrangements and computer programs for antenna sector configuration for an adaptive antenna system, AAS. A method, performed in a network node, comprises associating ( 35 ) wireless devices served from the network node to sectors of a respective sector configuration model based on radio network measurements, wherein the association is performed for each out of a number of sector configuration models. The method further comprises estimating (S 37 ) performance metrics for each sector configuration model based on the associating of wireless devices to sectors of the respective sector configuration model and selecting (S 37 ) an antenna sector configuration of the AAS based on the estimated performance metrics.

First claim

1 - 24 . (canceled)

25 . A method, performed in a network node, of selecting antenna sector configuration for an adaptive antenna system (AAS) of the network node, the method comprising:
for each out of a number of sector configuration models, associating wireless devices served from the network node to sectors of the respective sector configuration model based on radio network measurements; estimating performance metrics for each sector configuration model based on the associating of wireless devices to sectors of the respective sector configuration model; and selecting an antenna sector configuration of the AAS based on the estimated performance metrics.

26 . The method of claim 25 , further comprising determining performance metrics for wireless devices served from the network node.

27 . The method of claim 25 , further comprising deriving wireless device specific statistics indicative of a distribution of wireless devices served from the network node.

28 . The method of claim 27 , wherein the wireless device specific statistics are derived from wireless device measurements received in the network node, the wireless device measurements comprising Reference Signal Received Power measurements, Precoder Matrix Indicator measurements, position measurements, and/or timing advance measurements.

29 . The method of claim 27 , wherein the wireless device specific statistics are derived from network node measurements comprising propagation direction and/or propagation delay of the radio signal received from the wireless device.

30 . The method of claim 26 , further comprising associating the wireless devices to the sectors of the respective sector configuration model by comparing the derived wireless device specific statistics to one or more sectorization thresholds for the sectors of the respective sector configuration model.

31 . The method of claim 30 :
wherein the sectorization thresholds are defined for one or more parameters representative of respective uptake areas for sectors in a sector configuration model; and wherein the wireless device specific statistics is derived for the one or more parameters.

32 . The method of claim 30 , wherein one sectorization threshold represents a sectorization between first and second subset of sectors in a sector configuration model.

33 . The method of claim 25 , further comprising selecting an antenna sector configuration of the AAS based on a comparison of estimated performance metrics for each configuration model.

34 . The method of claim 26 , further comprising selecting an antenna sector configuration of the AAS based on a comparison of the estimated performance metrics for each configuration model and the determined performance metrics.

35 . The method of claim 25 , further comprising selecting an antenna sector configuration of the AAS based on a comparison of the estimated performance metrics and a configurable performance threshold.

36 . The method of claim 33 , further comprising:
determining an actual association of wireless devices to sectors of the selected antenna sector configuration; and updating a sector configuration model corresponding to the selected antenna configuration model based on actual association.

37 . The method of claim 36 , further comprising updating further sector configuration models based on the determined performance metrics.

38 . A network node, comprising:
processing circuitry operative to select an antenna sector configuration for an adaptive antenna system (AAS) of the network node; wherein the processing circuitry comprises a processor and memory; wherein the memory contains instructions executable by the processor whereby the network node is operative to:
for each out of a number of sector configuration models, associate wireless devices served from the network node to sectors of the respective sector configuration model based on radio network measurements;
estimate performance metrics for each sector configuration model based on the associating of wireless devices to sectors of the respective sector configuration model; and
select an antenna sector configuration of the AAS based on the estimated performance metrics.

39 . The network node of claim 38 , wherein the instructions are such that the network node is operative to:
determine an actual association of wireless devices to sectors of the selected antenna sector configuration; and update a sector configuration model corresponding to the selected antenna configuration model based on actual association.

40 . A non-transitory computer readable recording medium storing a computer program product for selecting antenna sector configuration for an adaptive antenna system (AAS) of a network node, the computer program product comprising software instructions which, when run on processing circuitry of the network node, causes the network node to:
for each out of a number of sector configuration models, associate wireless devices served from the network node to sectors of the respective sector configuration model based on radio network measurements; estimate performance metrics for each sector configuration model based on the associating of wireless devices to sectors of the respective sector configuration model; and select an antenna sector configuration of the AAS based on the estimated performance metrics.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Faxer Sebastian
• Ramachandra Pradeepa
• Zetterberg Kristina

Classifications

• H04W16/28 Primary

  using beam steering · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W72/046

  the resource being in the space domain, e.g. beams · CPC title

• H04W24/02

  Arrangements for optimising operational condition · CPC title

• H04W16/18 Primary

  Network planning tools · CPC title