Interference reduction in dynamic TDD systems
The present disclosure relates to a communication method and system for converging a 5 th -Generation (5G) communication system for supporting higher data rates beyond a 4 th -Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Disclosed is a method of operating a telecommunication system utilising dynamic Time Division Duplex, TDD.
1. A method of operating a telecommunication system using dynamic Time Division Duplex (TDD), the method comprising:
transmitting, from a first Transmission Point (TRP) to a second TRP, information on a configuration of an uplink reference signal transmitted by a first User Equipment (UE);
assigning, by the second TRP, downlink channel state information reference signal (CSI-RS) resources for a second UE to measure channel information of the first UE based on the information; and
measuring, by the second UE, the channel information of the first UE at the downlink CSI-RS resources.
2. The method of claim 1 , further comprising transmitting, from the second TRP to the second UE, a signal including information on a configuration of the first UE.
3. The method of claim 2 , wherein the configuration of the uplink reference signal is an Uplink (UL) demodulation reference signal (DMRS) configuration.
4. The method of claim 3 ,
wherein the information is transmitted from the first TRP to the second TRP via a backhaul connection.
5. The method of claim 2 , wherein the transmitting to the second UE of a signal comprising information concerning a configuration of the first UE is performed based on a reported signal-to-interference-plus-noise ratio (SINR) of the second UE being below a defined threshold.
6. The method of claim 1 , further comprising receiving, by the second UE, a signal transmitted from the second TRP, using an interference rejection receiver.
7. The method of claim 6 , wherein the interference rejection receiver comprises one of a Minimum Mean Squared Error Interference Rejection Combining (MMSE-IRC) receiver or a Minimum Mean Squared Error Maximum Ratio Combining (MMSE-MRC) receiver.
8. A telecommunication system comprising:
a first Transmission Point (TRP) and a second TRP;
a first User Equipment (UE) and a second UE;
the first TRP is configured to transmit information on a configuration of an uplink reference signal transmitted by the first UE to the second TRP,
the second TRP is configured to assign downlink channel state information reference signal (CSI-RS) resources for the second UE to measure channel information of the first UE based on the information, and
the second UE is configured to measure the channel information of the first UE at the downlink CSI-RS resources.