# US 2019/0379433 A1 · Methods and devices for feeding back and configuring pilot parameters, user terminal and base station > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379433 A1 - Document ID: US20190379433A1 - Status: Published application - Kind: A1 - Application number: 16/346,481 - Filed: 2017-11-01 - Published: 2019-12-12 - Earliest claimed: 2016-11-04 - Assignees: Zte Corporation - Applicants: Zte Corporation - Inventors: Yijian CHEN; Zhaohua LU; Yu Ngok LI; Chuangxin JIANG; BO GAO - Web page: https://patentgrep.com/patent/US20190379433A1 ## CPC - H04B 7/0417: Feedback systems - H04B 7/0619: {using feedback from receiving side (feedback signaling for adaptive modulation/coding H04L1/0001)} - H04B 17/24: with feedback of measurements to the transmitter - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Provided are a method and device for feeding back a reference signal parameter, a method and device for configuring a reference signal parameter a user terminal and a base station. The method for feeding back a reference signal parameter can include: determining, by a terminal, at least one of a transmission parameter or a reception parameter of a reference signal; and feeding back, by the terminal, the at least one of the transmission parameter or the reception parameter of the reference signal to a base station. ## Claims ### Claim 1 A method for feeding back a reference signal parameter, comprising: determining, by a terminal, at least one of a transmission parameter or a reception parameter of a reference signal; and feeding back, by the terminal, the at least one of the transmission parameter or the reception parameter of the reference signal to a base station. ### Claim 2 (depends on 1) The method of claim 1, wherein when the reception parameter of the reference signal is determined by the terminal, the reception parameter comprises at least one of: receive antenna information, receive port information, receive beam information or receive mode information. ### Claim 3 (depends on 2) The method of claim 2, wherein when the transmission parameter of the reference signal is determined by the terminal and in condition that a type of the reference signal is a demodulation reference signal, the transmission parameter comprises at least one of: indication information about a number of repeated transmissions of demodulation reference signals having same precoding; indication information about a number of symbols for transmitting the demodulation reference signal; indication information about a time domain density of a resource for transmitting the demodulation reference signal; indication information about a frequency domain density of the resource for transmitting the demodulation reference signal; indication information about a position of the demodulation reference signal; or indication information about a sequence parameter of the demodulation reference signal; wherein the sequence parameter comprises: a sequence type, indication information about a transmission power of the demodulation reference signal, and indication information about a precoding binding granularity of the demodulation reference signal. ### Claim 4 (depends on 2) The method of claim 2, wherein in condition that a type of the reference signal is a demodulation reference signal, demodulation reference signal resources are grouped; and wherein the feeding back, by the terminal, the at least one of the transmission parameter and the reception parameter of the reference signal to the base station comprises: feeding back, by the terminal, the at least one of the transmission parameter and the reception parameter to each of a plurality of different demodulation reference signal resource groups. ### Claim 5 (canceled) ### Claim 6 (depends on 2) The method of claim 2, wherein in condition that a type of the reference signal is a demodulation reference signal, the feeding back, by the terminal, the at least one of the transmission parameter or the reception parameter of the reference signal to the base station comprises: feeding back, by the terminal, the at least one of the transmission parameter or the reception parameter for each of a plurality of types of control channel configurations. ### Claim 7 (depends on 2) The method of claim 2, wherein in condition that a type of the reference signal is a demodulation reference signal, the feeding back, by the terminal, the at least one of the transmission parameter or the reception parameter of the reference signal to the base station comprises: feeding back, by the terminal, the at least one of the transmission parameter or the reception parameter for each of a plurality of different transmission areas, wherein the transmission areas are data transmission areas or control transmission areas. ### Claim 8 (depends on 2) The method of claim 2, wherein when the transmission parameter of the reference signal is determined by the terminal and in condition that the reference signal is a measurement reference signal, the transmission parameter comprises at least one of: a number of measurement reference signal blocks to be transmitted; a rule for transmitting the measurement reference signal blocks; a number of time domain symbols comprised in the measurement reference signal blocks; a number of repeated transmissions of the measurement reference signal; indication information about precoding corresponding to the measurement reference signal; information about an optional precoding set corresponding to the measurement reference signal; or a precoding/beam relationship between a plurality of measurement reference signals. ### Claim 9 (depends on 8) The method of claim 8, wherein the number of repeated transmissions comprises: a number of repeated transmissions of a reference signal corresponding to a same port; or a number of repeated transmissions of reference signals having a same transmission mode; or a number of repeated transmissions of reference signals having a same transmission mode in a same reference signal resource block; or a number of repeated transmissions of reference signal resource blocks having a same transmission mode; or a number of repeated transmissions of a reference signal corresponding to a same beam. ### Claim 10 (depends on 2) The method of claim 2, further comprising: in condition that the reference signal is a measurement reference signal, feeding back, by the terminal, the reference signal parameter for each of P1 types of measurement reference signals, wherein P1 is an integer greater than 1. ### Claim 11 (depends on 2) The method of claim 2, further comprising: in condition that the reference signal is a measurement reference signal, dividing reference signal resources into P2 groups of reference signal resources, and feeding back, by the terminal, the reference signal parameter for each of the P2 groups of reference signal resources, wherein P2 is an integer greater than 1. ### Claim 12 (depends on 2) The method of claim 2, wherein when the transmission parameter of the reference signal is determined by the terminal and in condition that a type of the reference signal is a phase noise compensation reference signal, the transmission parameter comprises at least one of: indication information about a number of symbols for transmitting the phase noise compensation reference signal; indication information about a time domain density of a resource for transmitting the phase noise compensation reference signal; indication information about a frequency domain density of the resource for transmitting the phase noise compensation reference signal; indication information about a position of the phase noise compensation reference signal; indication information about a sequence parameter of the phase noise compensation reference signal; indication information about a transmission power of the phase noise compensation reference signal; indication information about precoding of the phase noise compensation reference signal; indication information about a number of precoding ports of the phase noise compensation reference signal; or indication information about a type of the phase noise compensation reference signal. ### Claim 13 A method for configuring a reference signal parameter, comprising: determining, by a network side, at least one of a transmission parameter or a reception parameter of a reference signal; and configuring, by the network side, the at least one of the transmission parameter or the reception parameter of the reference signal for a terminal through downlink signaling. ### Claim 14 (canceled) ### Claim 15 (depends on 13) The method of claim 13, wherein when the reception parameter of the reference signal is determined by the network side, the reception parameter comprises at least one of: receive antenna information, receive port information, receive beam information or receive mode information. ### Claim 16 (depends on 13) The method of claim 13, wherein when the transmission parameter of the reference signal is determined by the network side and in condition that the reference signal is a demodulation reference signal, the transmission parameter comprises at least one of: indication information for a zero power demodulation reference signal, indication information about a sequence type of the demodulation reference signal, indication information about a number of repeated transmissions of demodulation reference signals having same precoding, or indication information about a precoding binding granularity of the demodulation reference signal. ### Claim 17 (depends on 13) The method of claim 13, wherein when the transmission parameter of the reference signal is determined by the network side and in condition that the reference signal is a measurement reference signal, the transmission parameter comprises at least one of: a number of measurement reference signal blocks to be transmitted; a rule for transmitting the measurement reference signal blocks; a number of time domain symbols comprised in the measurement reference signal blocks; a precoding/beam relationship between a plurality of measurement reference signals; or a number of repeated transmissions of a reference signal corresponding to a same port. ### Claim 18 (depends on 13) The method of claim 13, wherein when the transmission parameter of the reference signal is determined by the network side and in condition that the reference signal is a measurement reference signal, the transmission parameter comprises: a number of repeated transmissions of reference signals having a same transmission mode, wherein the transmission mode comprises: a transmission beam, a transmission sequence and a transmission antenna. ### Claim 19 (depends on 13) The method of claim 13, wherein in condition that the reference signal is a measurement reference signal, diving, by a base station, measurement reference signal resources into P2 groups of reference signal resources, and configuring the at least one of the transmission parameter or the reception parameter for each of the P2 groups of reference signal resources, wherein P2 is an integer greater than 1. ### Claim 20 (depends on 13) The method of claim 13, wherein when the transmission parameter of the reference signal is determined by the network side, the transmission parameter comprises at least one of: indication information about a number of symbols for transmitting a phase noise compensation reference signal; indication information about a time domain density of a resource for transmitting the phase noise compensation reference signal; indication information about a frequency domain density of the resource for transmitting the phase noise compensation reference signal; indication information about a position of the phase noise compensation reference signal; indication information about a sequence parameter of the phase noise compensation reference signal; indication information about a transmission power of the phase noise compensation reference signal; or indication information about a number of precoding ports of the phase noise compensation reference signal. ### Claim at position 21 21-24. (canceled) ### Claim 25 (depends on 13) A device for configuring a reference signal parameter, comprising: a processor; a memory, which is configured to store programs executable by the processor; wherein the processor is configured to execute the programs, when executed, perform the method of claim 13. ### Claim at position 23 26-27. (canceled) ### Claim 28 A user terminal, comprising: a processor and an antenna system, wherein the processor is configured to determine at least one of a transmission parameter and a reception parameter of a reference signal; and the antenna system is configured to feed back the at least one of the transmission parameter and the reception parameter of the reference signal to a base station. ### Claim at position 25 29-32. (canceled)