Methods and Apparatuses for Handling Configured and Dynamic Downlink Transmissions in a Wireless Communication Network

Abstract

Techniques disclosed herein efficiently address prioritization by a UE (12) regarding its reception behavior with respect to a configured downlink transmission that is overlapped by a dynamic assignment and/or the dynamic downlink transmission scheduled via the dynamic assignment. In at least one embodiment having applicability to operation of the UE (12) in a communication network based on the 5G NR specifications, the techniques disclosed herein provide for predictable behavior by the UE (12) as to when the UE (12) prioritizes a configured Physical Downlink Shared Channel (PDSCH) versus another PDSCH. Correspondingly, a radio network node (22) may exploit the predictable behavior of the UE (12) to override a configured PDSCH in favor of a dynamic PDSCH, by transmitting the Physical Downlink Control Channel (PDCCH) that schedules the dynamic PDSCH so that a timing relationship between the PDCCH and the configured PDSCH is satisfied.

1 .- 18 . (canceled) 
     
     
         19 . A method performed by a User Equipment (UE) operating in a wireless communication network, the method comprising:
 decoding a dynamic Physical Downlink Shared Channel (PDSCH) that overlaps on a same Downlink (DL) carrier with a configured PDSCH, if a starting time of the configured PDSCH and an ending time of a Physical Downlink Control Channel (PDCCH) scheduling the dynamic PDSCH satisfy a timing relationship, and otherwise not decoding the dynamic PDSCH.   
     
     
         20 . The method of  claim 19 , further comprising the UE receiving signaling from a network node of the wireless communication network, the signaling indicating semi-persistent resources assigned to the UE for reception of the configured PDSCH. 
     
     
         21 . The method of  claim 19 , wherein the timing relationship is satisfied if the ending time of the PDCCH scheduling the dynamic PDSCH is before the starting time of the configured PDSCH. 
     
     
         22 . The method of  claim 19 , wherein the timing relationship is satisfied if the ending time of the PDCCH scheduling the dynamic PDSCH is at least N Orthogonal Frequency Division Multiplexing (OFDM) symbol times before the starting time of the configured PDSCH, wherein N is an integer. 
     
     
         23 . The method of  claim 22 , wherein the N OFDM symbol times are based on a minimum OFDM subcarrier spacing, as between a subcarrier spacing used for the configured PDSCH and a subcarrier spacing used for the PDCCH scheduling the dynamic PDSCH. 
     
     
         24 . The method of  claim 19 , wherein the timing relationship is satisfied if the ending time of the PDCCH scheduling the dynamic PDSCH is at least N symbol durations before the starting time of the configured PDSCH, where the symbol durations are defined by the smallest subcarrier spacing as between a subcarrier spacing associated with the configured PDSCH and a subcarrier spacing associated with the PDSCH scheduling the dynamic PDSCH. 
     
     
         25 . The method of  claim 19 , wherein the timing relationship is satisfied if the starting time of the configured PDSCH is at least a minimum temporal distance beyond the ending time of the PDCCH scheduling the dynamic PDSCH. 
     
     
         26 . A User Equipment (UE) configured for operation in a wireless communication network, and comprising:
 communication circuitry configured to send communication signals to radio network nodes of the wireless communication network and to receive communication signals from radio network nodes of the wireless communication network; and   processing circuitry operatively associated with the communication circuitry and configured to decode a dynamic Physical Downlink Shared Channel (PDSCH) that overlaps on a same Downlink (DL) carrier with a configured PDSCH, if a starting time of the configured PDSCH and an ending time of a Physical Downlink Control Channel (PDCCH) scheduling the dynamic PDSCH satisfies a timing relationship, and otherwise not decode the dynamic PDSCH.   
     
     
         27 . The UE of  claim 26 , wherein the processing circuitry is configured to receive signaling from a network node of the wireless communication network, the signaling indicating semi-persistent resources assigned to the UE for reception of the configured PDSCH. 
     
     
         28 . The UE of  claim 26 , wherein the timing relationship is satisfied if the ending time of the PDCCH scheduling the dynamic PDSCH is before the starting time of the configured PDSCH. 
     
     
         29 . The UE of  claim 26 , wherein the timing relationship is satisfied if the ending time of the PDCCH scheduling the dynamic PDSCH is at least N Orthogonal Frequency Division Multiplexing (OFDM) symbol times before the starting time of the configured PDSCH, wherein N is an integer. 
     
     
         30 . The UE of  claim 29 , wherein the N OFDM symbol times are based on a minimum OFDM subcarrier spacing, as between a subcarrier spacing used for the configured PDSCH and a subcarrier spacing used for the PDCCH scheduling the dynamic PDSCH. 
     
     
         31 . The UE of  claim 26 , wherein the timing relationship is satisfied if an ending time of the PDCCH scheduling the dynamic PDSCH is at least N symbol durations before the starting time of the configured PDSCH, where the symbol durations are defined by the smallest subcarrier spacing as between a subcarrier spacing associated with the configured PDSCH and a subcarrier spacing associated with the PDSCH scheduling the dynamic PDSCH. 
     
     
         32 . The UE of  claim 26 , wherein the timing relationship is satisfied if the starting time of the configured PDSCH is at least a minimum temporal distance beyond the ending time of the PDCCH scheduling the dynamic PDSCH.