Determining channel state information in 5g or other next generation wireless communication systems with multiple transmission points

Abstract

The described technology is generally directed towards using demodulation reference signal (DMRS)-based channel state information (CSI) reporting in a wireless communications network with multiple transmit-receive points (TRPs). A user equipment computes joint CSI based on received DMRS data, e.g., received with downlink data traffic from two TRPs, such as co-located or backhaul connected TRPs. The DMRS-based joint CSI is reported to the multiple TRPs for use in scheduling subsequent data traffic, which can increase data throughput, and can reduce the frequency of CSI-RS reporting, increasing overall efficiency. The network can activate and deactivate DMRS-based CSI reporting.

What is claimed is: 
     
         1 . A method, comprising:
 receiving, by a user equipment comprising a processor, from a first network device, sidelink parameter data based on joint estimated channel state information generated from first demodulation reference signal data from the first network device and second demodulation reference signal data from a second network device;   communicating, by the user equipment, based on the sidelink parameter data, first sidelink data traffic with the first network device; and   communicating, by the user equipment, based on the sidelink parameter data, second sidelink data traffic with the second network device.   
     
     
         2 . The method of  claim 1 , further comprising:
 receiving, by the user equipment, first downlink scheduling data from the first network device.   
     
     
         3 . The method of  claim 1 , further comprising:
 receiving, by the user equipment, second downlink scheduling data from the second network device.   
     
     
         4 . The method of  claim 1 , further comprising:
 receiving, by the user equipment, from the first network device, an instruction to activate demodulation reference signal-based channel state information reporting.   
     
     
         5 . The method of  claim 4 , further comprising:
 in response to receiving the instruction, sending, by the user equipment, the joint estimated channel state information to the first network device.   
     
     
         6 . The method of  claim 4 , further comprising:
 in response to receiving the instruction, sending, by the user equipment, the joint estimated channel state information to the second network device.   
     
     
         7 . The method of  claim 4 , further comprising:
 in response to receiving the instruction, determining, by the user equipment, the joint estimated channel state information.   
     
     
         8 . A user equipment, comprising:
 a processor; and   a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
 receiving, from a first base station, uplink parameter data based on joint estimated channel state information generated from first demodulation reference signal data from the first base station and second demodulation reference signal data from a second base station; 
 sending, based on the uplink parameter data, first uplink data traffic with the first base station; and 
 sending, based on the uplink parameter data, second uplink data traffic with the second base station. 
   
     
     
         9 . The user equipment of  claim 8 , wherein the operations further comprise:
 receiving first downlink scheduling data from the first base station.   
     
     
         10 . The user equipment of  claim 8 , wherein the operations further comprise:
 receiving second downlink scheduling data from the second base station.   
     
     
         11 . The user equipment of  claim 8 , wherein the operations further comprise:
 receiving, from the first base station, a message to activate demodulation reference signal-based channel state information reporting.   
     
     
         12 . The user equipment of  claim 11 , wherein the operations further comprise:
 in response to receiving the message, sending the joint estimated channel state information to the first base station.   
     
     
         13 . The user equipment of  claim 11 , wherein the operations further comprise:
 in response to receiving the message, sending the joint estimated channel state information to the second base station.   
     
     
         14 . The user equipment of  claim 11 , wherein the operations further comprise:
 in response to receiving the message, determining the joint estimated channel state information.   
     
     
         15 . A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor of a user equipment, facilitate performance of operations, comprising:
 receiving, from first network equipment, parameter data based on joint estimated channel state information generated from first demodulation reference signal data from the first network device and second demodulation reference signal data from second network equipment;   communicating, based on the parameter data, first data traffic with the first network equipment; and   communicating, based on the parameter data, second data traffic with the second network equipment.   
     
     
         16 . The non-transitory machine-readable medium of  claim 15 , wherein the parameter data is sidelink parameter data. 
     
     
         17 . The non-transitory machine-readable medium of  claim 16 , wherein the first data traffic is first sidelink data traffic, and the second data traffic is second sidelink data traffic. 
     
     
         18 . The non-transitory machine-readable medium of  claim 15 , wherein the parameter data is uplink parameter data. 
     
     
         19 . The non-transitory machine-readable medium of  claim 18 , wherein the first data traffic is first uplink data traffic, and the second data traffic is second uplink data traffic. 
     
     
         20 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise:
 sending the joint estimated channel state information to the first network equipment and the second network equipment.