# US 2018/0323944 A1 · Reference Signal Measurement Method, Reference Signal Sending Method, and Related Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323944 A1 - Document ID: US20180323944A1 - Status: Published application - Kind: A1 - Application number: 16/034,883 - Filed: 2018-07-13 - Published: 2018-11-08 - Earliest claimed: 2012-12-31 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jianguo Wang; Jianghua Liu; Qiang Wu - Web page: https://patentgrep.com/patent/US20180323944A1 ## CPC - H04L 5/0092: {Indication of how the channel is divided} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 5/0023: {Time-frequency-space} - 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} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 24/06: Testing, {supervising or monitoring} using simulated traffic - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A reference signal measurement method, a reference signal sending method, a user equipment, and a base station are provided. According to solutions in the embodiments of the present application, a user equipment determines reference signal resource configuration, which includes reference signal port configuration, reference signal subframe configuration, and reference signal configuration, and a quantity of ports configured in the reference signal port configuration is N; receives a reference signal according to the reference signal resource configuration; and performs measurement based on the received reference signal to obtain channel state information and/or signal quality information. In the embodiments of the present invention, a quantity of ports configured in the reference signal port configuration is N; and a quantity of supported ports may vary with different values of N. ## Claims ### Claim 1 A method, comprising: obtaining, by a user equipment (UE), reference signal resource configuration; receiving, by the UE, a reference signal based on the reference signal resource configuration; and performing, by the UE, a measurement based on the reference signal to obtain channel state information. ### Claim 2 (depends on 1) The method according to claim 1, wherein the reference signal resource configuration comprises a reference signal port configuration that defines a quantity of reference signal ports, wherein the quantity of reference signal ports is N, wherein N is greater than 8. ### Claim 3 (depends on 2) The method according to claim 2, wherein the reference signal resource configuration further comprises a reference signal configuration that indicates resource elements and a corresponding slot occupied by the reference signal. ### Claim 4 (depends on 3) The method according to claim 3, wherein the resource elements configured by reference signal configuration are: N resource elements in M resource element groups, wherein each of the M resource element groups comprises eight resource elements, and M is an integer greater than or equal to 2. ### Claim 5 (depends on 4) The method according to claim 4, wherein: the N resource elements are: N resource elements in X resource element groups of the M resource element groups, wherein X is a smallest integer not less than N/8, and X is a positive integer less than or equal to M. ### Claim 6 (depends on 2) The method according to claim 2, wherein the reference signal resource configuration further comprises a reference signal subframe configuration. ### Claim 7 (depends on 6) The method according to claim 6, wherein a subframe configured by the reference signal subframe configuration does not comprise one or more of the following subframes: a subframe used for transmission over a physical downlink control channel, wherein the physical downlink control channel carries downlink control information used for scheduling a physical downlink shared channel; a subframe used for transmission over a physical downlink shared channel; a subframe used for transmitting a demodulation reference signal (DMRS); or a subframe used for transmitting a part or entirety of cell-specific reference signals (CRS). ### Claim 8 (depends on 6) The method according to claim 6, wherein a subframe configured by the reference signal subframe configuration is a multicast-broadcast single frequency network (MBSFN) subframe. ### Claim 9 (depends on 1) The method according to claim 1, wherein the reference signal is a channel state information reference signal (CSI-RS). ### Claim 10 An apparatus, comprising: a processor; and a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for: obtaining a reference signal resource configuration; receiving a reference signal based on the reference signal resource configuration; and performing a measurement based on the reference signal to obtain channel state information. ### Claim 11 (depends on 10) The apparatus according to claim 10, wherein the reference signal resource configuration comprises a reference signal port configuration that defines a quantity of reference signal ports, wherein the quantity of reference signal ports is N, wherein N is greater than 8. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the reference signal resource configuration further comprises a reference signal configuration that indicates resource elements and a corresponding slot occupied by the reference signal. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein the resource elements configured by reference signal configuration are: N resource elements in M resource element groups, wherein each of the M resource element groups comprises eight resource elements, and M is an integer greater than or equal to 2. ### Claim 14 (depends on 13) The apparatus according to claim 13, wherein: the N resource elements are: N resource elements in X resource element groups of the M resource element groups, wherein X is a smallest integer not less than N/8, and X is a positive integer less than or equal to M. ### Claim 15 (depends on 11) The apparatus according to claim 11, wherein the reference signal resource configuration further comprises a reference signal subframe configuration. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein a subframe configured by the reference signal subframe configuration does not comprise one or more of the following subframes: a subframe used for transmission over a physical downlink control channel, wherein the physical downlink control channel carries downlink control information used for scheduling a physical downlink shared channel; a subframe used for transmission over a physical downlink shared channel; a subframe used for transmitting a demodulation reference signal (DMRS); or a subframe used for transmitting a part or entirety of cell-specific reference signals (CRS). ### Claim 17 (depends on 15) The apparatus according to claim 15, wherein a subframe configured by the reference signal subframe configuration is a multicast-broadcast single frequency network (MBSFN) subframe. ### Claim 18 (depends on 10) The apparatus according to claim 10, wherein the reference signal is a channel state information reference signal (CSI-RS). ### Claim 19 A user equipment, comprising: a processor; and a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for: obtaining a reference signal resource configuration; receiving a reference signal based on the reference signal resource configuration; and performing measurement based on the reference signal to obtain channel state information. ### Claim 20 (depends on 19) The user equipment of claim 19, wherein: the reference signal resource configuration comprises a reference signal port configuration that defines a quantity of reference signal ports, wherein the quantity of reference signal ports is N, wherein N is greater than 8; the reference signal resource configuration further comprises a reference signal configuration that indicates resource elements and a corresponding slot occupied by the reference signal; the resource elements configured by reference signal configuration are: N resource elements in M resource element groups, wherein each of the M resource element groups comprises eight resource elements, and M is an integer greater than or equal to 2; and the N resource elements are: N resource elements in X resource element groups of the M resource element groups, wherein X is a smallest integer not less than N/8, and X is a positive integer less than or equal to M.