Physical downlink control channel for fifth-generation networks

Abstract

Disclosed herein are apparatuses, systems, and methods using or implementing a control channel (PDCCH) design. The PDCCH can occupy an initial number of OFDM symbols of a downlink subframe, while occupying less than the full system bandwidth. The PDCCH can be time division multiplexed (TDM) with a shared channel (PDSCH) or frequency division multiplexed (FDM) with a PDSCH. The PDCCH can further be multiplexed with another PDCCH in a contiguous or non-contiguous region. Resources allocated to the PDCCH can overlap or partially overlap resources allocated to the PDSCH. An Evolved Node-B (eNB) can provide configuration information for the PDCCH design in Radio Resource Control (RRC) signaling to a user equipment (UE), or through use of a Master Information Block (MIB) or System Information Block (SIB).

1 . (canceled) 
     
     
         2 . An apparatus of a user equipment (UE) configured for operation in a fifth-generation system (5GS), the apparatus comprising: processing circuitry; and memory coupled to the processing circuitry,
 wherein to determine a physical downlink control channel (PDCCH) assignment in the 5GS, the processing circuitry is configured to:   decode a system information block (SIB), the SIB indicating a PDCCH search space for acquisition of a PDCCH;   monitor a number of PDCCH candidates to detect a downlink control information (DCI) format, the number of PDCCH candidates based on the PDCCH search space;   if the DCI format is detected, decode the DCI format to determine scheduling for a physical downlink shared channel (PDSCH); and   decode the PDSCH,   wherein the memory is configured to store the SIB.   
     
     
         3 . The apparatus of  claim 2 , wherein the SIB indicates whether the PDCCH search space comprises common search space or UE-specific search space. 
     
     
         4 . The apparatus of  claim 2 , wherein to monitor the number of PDCCH candidates, the processing circuitry is configured to decode each PDCCH candidate according to the monitored DCI format 
     
     
         5 . The apparatus of  claim 2 , wherein the processing circuitry is configured to decode radio-resource control (RRC) signalling for configuration information for acquiring the PDCCH. 
     
     
         6 . The apparatus of  claim 2  wherein the SIB is received in a master information block (MIB). 
     
     
         7 . The apparatus of  claim 2  wherein the processing circuitry is configured to decode each PDCCH candidate according to a monitored DCI format. 
     
     
         8 . The apparatus of  claim 2  wherein to determine the PDCCH assignment, the processing circuitry is configured to monitor the number of PDCCH candidates per slot to detect the DCI format. 
     
     
         9 . The apparatus of  claim 2  wherein the PDCCH candidates start at symbol 0, symbol 1, or symbol 2 of a slot. 
     
     
         10 . The apparatus of  claim 2 , wherein the number of the PDCCH candidates to be monitored are based on an aggregation level of control channel resources. 
     
     
         11 . The apparatus of  claim 2 , wherein the processing circuitry comprises a baseband processor. 
     
     
         12 . A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a user equipment (UE) configured for operation in a fifth-generation system (5GS), wherein to determine a physical downlink control channel (PDCCH) assignment the 5GS,
 wherein to determine a physical downlink control channel (PDCCH) assignment in the 5GS, the instructions configured the processing circuitry to:
 decode a system information block (SIB), the SIB indicating a PDCCH search space for acquisition of a PDCCH; 
 monitor a number of PDCCH candidates to detect a downlink control information (D format, the number of PDCCH candidates based on the PDCCH search space; 
 if the DCI format is detected, decode the DCI format to determine scheduling for a physical downlink shared channel (PDSCH); and 
 decode the PDSCH. 
   
     
     
         13 . The non-transitory computer-readable storage medium of  claim 12 , wherein the SIB indicates whether the PDCCH search space comprises common search space or UE-specific search space. 
     
     
         14 . The non-transitory computer-readable storage medium of  claim 12 , wherein to monitor the number of PDCCH candidates, the processing circuitry is configured to decode each PDCCH candidate according to the monitored DCI format 
     
     
         15 . The non-transitory computer-readable storage medium of  claim 12 , wherein the processing circuitry is configured to decode radio-resource control (RRC) signalling for configuration information for acquiring the PDCCH. 
     
     
         16 . The non-transitory computer-readable storage medium of  claim 12  wherein the SIB is received in a master information block (MIB). 
     
     
         17 . The non-transitory computer-readable storage medium of  claim 12  wherein the processing circuitry is configured to decode each PDCCH candidate according to a monitored DCI format. 
     
     
         18 . An apparatus of a base station configured for operation in a fifth-generation system (5GS), the apparatus comprising: processing circuitry; and memory,
 wherein the processing circuitry is configured to:   encode a system information block (SIB) for transmission to a User Equipment (UE), the SIB indicating a physical downlink control channel (PDCCH) search space for acquisition of the PDCCH by the UE, the PDCCH search space indicating a number of PDCCH candidates for the UE to monitor to detect a DCI format;   encode a PDCCH for transmission, the PDCCH encoded to include a DCI format for detection by the UE within one or more of the PDCCH candidates, the DCI format including scheduling for a physical downlink shared channel (PDSCH); and   encode the PDSCH for transmission in according with the scheduling,   wherein the memory is configured to store the SIB.   
     
     
         19 . The apparatus of  claim 18  wherein the PDCCH and the PDSCH are encoded for transmission in a same downlink subframe. 
     
     
         20 . The apparatus of  claim 18  wherein PDSCH is encoded for transmission in a downlink subframe that includes the PDCCH candidates. 
     
     
         21 . The apparatus of  claim 18  wherein the PDSCH is multiplexed with the PDCCH candidates in downlink subframes. 
     
     
         22 . The apparatus of  claim 18 , wherein the PDCCH candidates have a maximum duration of three orthogonal frequency division multiplexing (OFDM) symbols and start at symbol 0, symbol 1, or symbol 2 of a slot, and
 wherein a bandwidth of the PDCCH candidates is indicated in the SIB, the bandwidth being less than a system channel bandwidth.