Remote interference management reference signal

Abstract

Systems, apparatuses, methods, and computer-readable media are provided for remote interference management (RIM) in wireless networks, including RIM reference signals (RIM-RS) transmitted to assist victim radio access network (RAN) nodes to identify aggressor RAN nodes due to, for example, atmospheric ducting. The RIM-RS is also flexibly configured. Other embodiments may be described and/or claimed.

1 . A non-transitory computer-readable medium (CRM) having instructions that, when executed by one or more processors, cause a next generation Node B (gNB) to perform operations, the operations comprising:
 determining a time division duplex (TDD) downlink/uplink (DL/UL) pattern periodicity that corresponds to a TDD DL/UL pattern with which the gNB is configured;   determining a remote interference management-reference signal (RIM-RS) periodicity based on the TDD DL/UL pattern periodicity; and   generating a RIM-RS for transmission based on the RIM-RS periodicity.   
     
     
         2 . The non-transitory CRM of  claim 1 , wherein the operations further comprise:
 determining that the RIM-RS periodicity is an integer multiple of the TDD DL/UL pattern periodicity.   
     
     
         3 . The non-transitory CRM of  claim 2 , wherein the TDD DL/UL pattern includes a plurality of concatenated TDD DL/UL patterns and the TDD DL/UL pattern periodicity is equal to a sum of a plurality of concatenated TDD DL/UL pattern periodicities that respectively correspond to the plurality of concatenated TDD DL/UL patterns. 
     
     
         4 . The non-transitory CRM of  claim 1 , wherein the operations further comprise:
 determining, based on configuration information, a time location of the RIM-RS; and   generating the RIM-RS for transmission based on the time location.   
     
     
         5 . The non-transitory CRM of  claim 1 , wherein the time location is to align an end of the RIM-RS with an end of a DL boundary of the TDD DL/UL pattern. 
     
     
         6 . The non-transitory CRM of  claim 5 , wherein the TDD DL/UL pattern includes a plurality of concatenated TDD DL/UL patterns and the DL boundary corresponds to one of the plurality of concatenated TDD DL/UL patterns. 
     
     
         7 . The non-transitory CRM of  claim 1 , wherein the operations further comprise:
 generating the RIM-RS for transmission in one or more RIM-RS transmission occasions within an RIM-RS transmission period.   
     
     
         8 . The non-transitory CRM of  claim 7 , wherein the operations further comprise:
 determining an index of the one or more RIM-RS transmission occasions based on a set identifier of a transmitter of the gNB; and   generating the RIM-RS for transmission in the one or more RIM-RS transmission occasions based on the set identifier.   
     
     
         9 . An apparatus comprising:
 memory configured to store configuration information; and   processing circuitry, coupled with the memory, configured to:
 determine, based on the configuration information, a time-location configured for a remote interference management-reference signal (RIM-RS), wherein the time-location is configured with respect to a switching point within a time division duplex downlink/uplink (TDD DL/UL) pattern; and 
 generate the RIM-RS for transmission based on the time-location. 
   
     
     
         10 . The apparatus of  claim 9 , further comprising: interface circuitry configured to transmit the RIM-RS. 
     
     
         11 . The apparatus of  claim 9 , wherein the processing circuitry is further configured to:
 determine a TDD DL/UL pattern periodicity that corresponds to the TDD DL/UL pattern;   determine a RIM-RS periodicity based on the TDD DL/UL pattern periodicity; and   generate the RIM-RS for transmission based on the RIM-RS periodicity.   
     
     
         12 . The apparatus of  claim 11 , wherein the processing circuitry is further configured to: determine the RIM-RS periodicity is an integer multiple of the TDD DL/UL pattern periodicity. 
     
     
         13 . The apparatus of  claim 12 , wherein the TDD DL/UL pattern includes a plurality of concatenated TDD DL/UL patterns and the TDD DL/UL pattern periodicity is equal to a sum of a plurality of concatenated TDD DL/UL pattern periodicities that respectively correspond to the plurality of concatenated TDD DL/UL patterns. 
     
     
         14 . The apparatus of  claim 9 , wherein the time location is to align an end of the RIM-RS with an end of a DL boundary of the TDD DL/UL pattern. 
     
     
         15 . The apparatus of  claim 14 , wherein the TDD DL/UL pattern includes a plurality of concatenated TDD DL/UL patterns and the DL boundary corresponds to one of the plurality of concatenated TDD DL/UL patterns. 
     
     
         16 . The apparatus of  claim 9 , wherein the processing circuitry is further configured to:
 generate the RIM-RS for transmission in one or more RIM-RS transmission occasions within an RIM-RS transmission period.   
     
     
         17 . The apparatus of  claim 16 , wherein the processing circuitry is further configured to:
 determine an index of the one or more RIM-RS transmission occasions based on a set identifier of a transmitter of the gNB; and   generate the RIM-RS for transmission in the one or more RIM-RS transmission occasions based on the set identifier   
     
     
         18 . A non-transitory computer-readable medium (CRM) having instructions that, when executed by one or more processors, causes a first radio access network (RAN) node to perform operations, the operations comprising:
 monitoring for a remote interference management-reference signal (RIM-RS) in a first time division duplex (TDD) period;   detecting the RIM-RS in the first TDD period;   extracting, based on detection of the RIM-RS, a set identifier (ID) associated with a second RAN node that transmitted the RIM-RS; and   saving the set ID in memory.   
     
     
         19 . The non-transitory CRM of  claim 18 , wherein the operations further comprise determining a time location configured with respect to a switching point within a TDD downlink/uplink pattern. 
     
     
         20 . The non-transitory CRM of  claim 18 , wherein the operations further comprise:
 providing an indication of the set ID to a management node of a network.