Upload Control Signaling For New Radio

Abstract

Sounding reference signals may be pre-coded, and pre-coding weights may be based on a codebook or non-codebook approaches, e.g., via a radio resource control or a downlink RRC or DL control channel. Pre-coded sounding reference signals may be adapted to user equipment antenna configuration. Further, NR-SRS may be used as UL demodulation RS (DM-RS).

1 . A first apparatus comprising a processor, a memory, and communication circuitry, the first apparatus being connected to a communications network via its communication circuitry, the first apparatus further comprising computer-executable instructions stored in the memory which, when executed by the processor, cause the first apparatus to:
 send, to a second apparatus through a radio resource control or a downlink control channel, a Sounding Reference Signal (SRS) configuration comprising, for each of multiple numerologies within a self-contained subframe, a beam identifier for a separate sounding reference signal and time, frequency, and orthogonal resources for the separate SRS, wherein the self-contained subframe comprises, within a time-frequency resource grid, downlink data, related reference signals, and uplink ACK/NACK;   transmit the separate sounding reference signals; and   receive, from the second apparatus, a response comprising one or more of the beam identifiers.   
     
     
         2 . The first apparatus of  claim 1 , wherein the instructions further cause the first apparatus to dynamically allocate a number of transmitted sounding reference signal symbols through the radio resource control or the downlink control channel. 
     
     
         3 . The first apparatus of  claim 2 , wherein the instructions further cause the first apparatus to adapt the time domain location of sounding reference signal symbols to support periodic or aperiodic transmissions. 
     
     
         4 . The first apparatus of  claim 1 , wherein the instructions further cause the first apparatus to dynamically allocate a frequency bandwidth of each separate sounding reference signal through the radio resource control or the downlink control channel. 
     
     
         5 . The first apparatus of  claim 1 , wherein the sounding reference signals are transmitted using beam forming. 
     
     
         6 . The first apparatus of  claim 1 , wherein the instructions further cause the first apparatus to pre-code weights for the sounding reference signals using a codebook. 
     
     
         7 . The first apparatus of  claim 1 , wherein the instructions further cause the first apparatus to use the sounding reference signal as an uplink demodulation reference signal. 
     
     
         8 . A first apparatus comprising a processor, a memory, and communication circuitry, the first apparatus being connected to a communications network via its communication circuitry, the first apparatus further comprising computer-executable instructions stored in the memory which, when executed by the processor, cause the first apparatus to:
 allocate, in a subframe of a reference numerology, a first grant-less slot and a distinct second grant-less slot, the first grant-less slot and the second grant-less slot having different time and/or frequency resources of different sizes.   
     
     
         9 . The first apparatus of  claim 8 , wherein a first time slot of the subframe comprises the first and second grant-less slots. 
     
     
         10 . The first apparatus of  claim 9 , wherein the first grant-less slot is a first full frequency band slot. 
     
     
         11 . The first apparatus of  claim 10 , wherein the second grant-less slot is a first partial frequency band slot. 
     
     
         12 . The first apparatus of  claim 10 , wherein the second grant-less slot is a second full frequency band slot. 
     
     
         13 . The first apparatus of  claim 8 , wherein first and second grant-less slots each traverse a first and a second time slot of the subframe. 
     
     
         14 . The first apparatus of  claim 8 , wherein the first and second grant-less slots are configured by a higher layer. 
     
     
         15 . The first apparatus of  claim 14 , wherein the first and second grant-less slots are configured by the higher layer via Radio Resource Control (RRC) signalling. 
     
     
         16 . The first apparatus of  claim 8 , wherein the first and second grant-less slots are configured dynamically via a downlink control channel. 
     
     
         17 . The first apparatus of  claim 8 , wherein the first grant-less slot comprises one or more of a downlink signal, a Downlink Control Information (DCI), an uplink pilot, an uplink preamble, an Uplink Control Information.