Method and Arrangement for Handling Measurements Under Dynamically Configured Patterns

Abstract

The present disclosure relates to a method in a measuring node and a measuring node for handling measurements performed on signals received over a wireless interface in a wireless communication system. The method comprises performing ( 202 ) measurements on the received signals according to a first measurement configuration, detecting ( 204 ) that a change from the first measurement configuration to a second measurement configuration has occurred, performing ( 206 ) measurements on the received signals according to the second measurement configuration, and using ( 210 ) the measurements performed according to the first measurement configuration and the measurements performed according to the second measurement configuration for radio resource management tasks. At least one of the first measurement configuration and the second measurement configuration comprises a signal activity pattern.

1 . A method in a measuring node for handling measurements performed on signals received over a wireless interface in a wireless communication system, comprising:
 performing measurements on received signals according to a first measurement configuration;   detecting that a change from the first measurement configuration to a second measurement configuration has occurred;   performing measurements on received signals according to the second measurement configuration, wherein at least one of the first measurement configuration and the second measurement configuration comprises a signal activity pattern; and   using the measurements performed according to the first measurement configuration and the measurements performed according to the second measurement configuration for radio resource management tasks.   
     
     
         2 . Method according to  claim 1 , wherein the radio management tasks are any of or more of: performing a cell selection, performing a cell reselection, reporting performed measurements to a network node. 
     
     
         3 . Method according to  claim 1 , further comprising identifying how to use the measurements performed according to the first measurement configuration and the measurements performed according to the second measurement configuration according to a defined measurement-related rule pertaining to handling of measurements. 
     
     
         4 . Method according to  claim 1 , wherein the signal activity pattern is any one of a transmit pattern and a measurement pattern. 
     
     
         5 . Method according to  claim 4 , wherein the transmit pattern is an Almost Blank Subframe pattern or a time-domain measurement resource restriction pattern. 
     
     
         6 . Method according to  claim 3 , wherein the rule identifies how to use the measurements performed according to the first measurement configuration and the second measurement configuration based on at least one of the following measurement data: measurement type, a value of a measurement characteristic, whether the measurements performed are downlink or uplink measurements and a reason for the change of measurement configuration. 
     
     
         7 . Method according to  claim 3 , wherein the rule identifies how to use the measurements performed according to the first measurement configuration and the second measurement configuration based on a first steady state before changing from the first measurement configuration to the second measurement configuration and a second steady state after changing from the first measurement configuration to the second measurement configuration. 
     
     
         8 . Method according to  claim 7 , further comprising reporting an indication of the first steady state and the second steady state. 
     
     
         9 . Method according to  claim 1 , wherein the measurements performed according to the first measurement configuration are used if the value of the measurement characteristic is above a threshold. 
     
     
         10 . Method according to  claim 9 , wherein the measurement characteristic is a measurement time period, a signal strength or an error rate for the received signal. 
     
     
         11 . Method according to  claim 1 , further comprising: combining the measurements performed according to the first measurement configuration with the measurements performed according to the second measurement configuration. 
     
     
         12 . Method according to  claim 1 , further comprising dropping the measurements performed according to the first measurement configuration and using the measurements performed according to the second measurement configuration. 
     
     
         13 . Method according to  claim 12 , further comprising indicating that the measurements performed according to the first measurement configuration have been dropped. 
     
     
         14 . Method according to  claim 1 , further comprising: using the measurements performed according to the first measurement configuration separately from the measurements performed according to the second measurement configuration. 
     
     
         15 . Method according to  claim 1 , further comprising: reporting the measurements performed according to the first measurement configuration and/or the measurements performed according to the second measurement configuration to a network node. 
     
     
         16 . Method according to  claim 15 , further comprising reporting to the network node if the measurements performed according to the first measurement configuration and the measurements performed according to the second measurement configuration are combined, dropped or used separately. 
     
     
         17 . Method according to  claim 1 , wherein detecting a change to a second measurement configuration is accomplished when receiving the second measurement configuration from the network node, when detecting a cell change, when detecting a triggering event or when fulfilling a triggering condition. 
     
     
         18 . Method according to  claim 1 , wherein a measurement time for performing measurements according to the first measurement configuration and/or the second measurement configuration is extended compared to if only the first measurement configuration were used. 
     
     
         19 . A measuring node for handling measurements performed on signals received over a wireless interface in a wireless communication system, comprising:
 a measuring unit arranged to perform measurements on received signals according to a first measurement configuration, and for performing measurements on received signals according to a second measurement configuration, wherein at least one of the first measurement configuration and the second measurement configuration comprises a signal activity pattern, and   a processor arranged to detect a change from the first measurement configuration to the second measurement configuration, and for using the measurements performed according to the first measurement configuration and the measurements performed according to the second measurement configuration for radio resource management tasks.   
     
     
         20 . Measuring node according to  claim 19 , wherein the processor is further arranged to identify how to use the measurements performed according to the first measurement configuration and the measurements performed according to the second measurement configuration according to a defined measurement-related rule pertaining to handling of measurements. 
     
     
         21 . Measuring node according to  claim 19 , wherein the processor is further arranged to use the measurements performed according to the first measurement configuration if a value of a measurement characteristic is above a threshold. 
     
     
         22 . Measuring node according to  claim 19 , wherein the processor is further arranged to combine the measurements performed according to the first measurement configuration with the measurements performed according to the second measurement configuration. 
     
     
         23 . Measuring node according to  claim 19 , wherein the processor is further arranged to drop the measurements performed according to the first measurement configuration and to use the measurements performed according to the second measurement configuration. 
     
     
         24 . Measuring node according to  claim 19 , wherein the processor is further arranged to use the measurements performed according to the first measurement configuration separately from the measurements performed according to the second measurement configuration. 
     
     
         25 . Measuring node according to  claim 19 , wherein the processor is further arranged to report the measurements performed according to the first measurement configuration and/or the measurements performed according to the second measurement configuration to a network node. 
     
     
         26 . Method in a network node for controlling a change of signal activity pattern for signals transmitted from the network node to a measuring node, comprising:
 instructing the measuring node or a transmit unit of the network node to start using a first signal activity pattern for signals transmitted to the measuring node;   analyzing measurement behaviour of the measuring node;   instructing the measuring node or the transmit unit of the network node to start using a second signal activity pattern based on the analysis.   
     
     
         27 . Method according to  claim 26 , wherein analyzing measurement behaviour of the measuring node comprises analyzing measurements performed by the measuring node on the signals received according to the first signal activity pattern. 
     
     
         28 . Method according to  claim 27 , further comprising instructing the measuring node to abort the measurements performed according to the first signal activity pattern based on the analysis. 
     
     
         29 . Method according to  claim 26 , further comprising controlling an event that triggers a need for instructing the measuring node or the transmit unit of the network node to start using a second signal activity pattern. 
     
     
         30 . Method according to  claim 26 , wherein instructing the measuring node or the transmit unit of the network node to start using the first signal activity pattern comprises instructing the measuring node to start using a first measurement pattern, and wherein instructing the measuring node or the transmit unit of the network node to start using the second signal activity pattern comprises instructing the measuring node to start using a second measurement pattern based on the analysis. 
     
     
         31 . Method according to  claim 26 , wherein instructing the measuring node or the transmit unit of the network node to start using the first signal activity pattern comprises instructing the transmit unit of the network node to start using a first transmit pattern, and wherein instructing the measuring node or the transmit unit of the network node to start using the second signal activity pattern comprises instructing the transmit unit of the network node to start using a second transmit pattern based on the analysis. 
     
     
         32 . Method according to  claim 26 , wherein the measurement behaviour is analyzed based on measurement type, signal activity pattern characteristics and/or state transition information. 
     
     
         33 . Method according to  claim 32 , wherein the measurement behaviour is analyzed based on a predefined rule for measurement type, signal activity pattern characteristics and/or state transition information. 
     
     
         34 . Method according to  claim 26 , wherein instructing the measuring node or the transmit unit of the network node to start using the second signal activity pattern comprises instructing the measuring node or the transmit unit of the network node a time to start using the second signal activity pattern. 
     
     
         35 . A network node for controlling a change of signal activity pattern for signals transmitted from the network node to a measuring node, comprising:
 a processor arranged for:   instructing the measuring node or a transmit unit of the network node to start using a first signal activity pattern for signals transmitted to the measuring node;   analyzing measurement behaviour of the measuring node;   instructing the measuring node or the transmit unit of the network node to start using a second signal activity pattern based on the analysis.