# US 2019/0173645 A1 · Reference signal sending method and reference signal sending apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173645 A1 - Document ID: US20190173645A1 - Status: Published application - Kind: A1 - Application number: 16/272,853 - Filed: 2019-02-11 - Published: 2019-06-06 - Earliest claimed: 2016-08-12 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Zhiheng GUO; Wei SUN; Xinqian XIE - Web page: https://patentgrep.com/patent/US20190173645A1 ## CPC - 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 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0005: {Time-frequency} - H04L 5/0016: {Time-frequency-code} - H04W 88/08: Access point devices - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The reference signal sending method includes: determining, by a first sending device, a first reference signal and a first code resource, where the first code resource is orthogonal to a second code resource, the second code resource is used to transmit a second reference signal; and sending, by the first sending device, the first reference signal by using the first code resource, where the first reference signal is carried on at least one first time-frequency resource group, a value of a quantity of resource elements (REs) occupied by each of the at least one first time-frequency resource group is the same as a value of a length of the first code resource, and the first reference signal and the second reference signal are multiplexed on a time-frequency resource occupied by the at least one first time-frequency resource group, based on the first code resource and the second code resource. ## Claims ### Claim 1 A reference signal sending method comprising: determining, by a first sending device, a first reference signal and a first code resource, wherein the first code resource is orthogonal to a second code resource, the second code resource is used to transmit a second reference signal, the first reference signal is a reference signal of a first type, the second reference signal is a reference signal of a second type, and the first type is different from the second type; and sending, by the first sending device, the first reference signal by using the first code resource, wherein the first reference signal is carried by at least one first time-frequency resource group, wherein a value of a quantity of resource elements (REs) occupied by each of the at least one first time-frequency resource group is the same as a value of a length of the first code resource, and the first reference signal and the second reference signal are multiplexed on a time-frequency resource occupied by the at least one first time-frequency resource group, based on the first code resource and the second code resource. ### Claim 2 (depends on 1) The reference signal sending method according to claim 1, wherein the second reference signal is carried by at least one second time-frequency resource group, wherein a value of a quantity of REs occupied by each of the at least one second time-frequency resource group is the same as a value of a length of the second code resource, and the at least one second time-frequency resource group and the at least one first time-frequency resource group occupy a same time-frequency resource. ### Claim 3 (depends on 2) The reference signal sending method according to claim 2, wherein each of the at least one first time-frequency resource group occupies 4N REs, each of the at least one second time-frequency resource group occupies 4M REs, N is an integer greater than or equal to 1, and M is an integer greater than or equal to 1. ### Claim 4 (depends on 2) The reference signal sending method according to claim 2, wherein each of the at least one first time-frequency resource group occupies 2N REs, each of the at least one second time-frequency resource group occupies 2M REs, N is an integer greater than or equal to 1, and M is an integer greater than or equal to 1. ### Claim 5 (depends on 4) The reference signal sending method according to claim 4, wherein each of the at least one first time-frequency resource group occupies two REs, and each of the at least one second time-frequency resource group occupies two REs. ### Claim 6 (depends on 1) The reference signal sending method according to claim 1, wherein either one of the following situations exists: (a) a function of a reference signal of the first type is different from a function of a reference signal of the second type, and the function of the reference signal of the first type and the function of the reference signal of the second type are two of the following functions: automatic gain control (AGC) adjustment, time-frequency synchronization, phase compensation, physical data channel demodulation, physical control channel demodulation, channel state information measurement, beam state information measurement, beam refinement information measurement, radio resource management (RRM) measurement, and positioning measurement; or (b) uplink/downlink directions of a reference signal of the first type and a reference signal of the second type are different. ### Claim 7 A reference signal sending apparatus comprising: a processor; and a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for being executed by the processor, the programming instructions, when executed, instruct the processor to: determine a first reference signal and a first code resource, wherein the first code resource is orthogonal to a second code resource, the second code resource is used to transmit a second reference signal, the first reference signal is a reference signal of a first type, the second reference signal is a reference signal of a second type, and the first type is different from the second type; and send the first reference signal by using the first code resource, wherein the first reference signal is carried by at least one first time-frequency resource group, wherein a value of a quantity of resource elements (REs) occupied by each of the at least one first time-frequency resource group is the same as a value of a length of the first code resource, and the first reference signal and the second reference signal are multiplexed on a time-frequency resource occupied by the at least one first time-frequency resource group, based on the first code resource and the second code resource. ### Claim 8 (depends on 7) The reference signal sending apparatus according to claim 7, wherein the second reference signal is carried by at least one second time-frequency resource group, wherein a value of a quantity of REs occupied by each of the at least one second time-frequency resource group is the same as a value of a length of the second code resource, and the at least one second time-frequency resource group and the at least one first time-frequency resource group occupy a same time-frequency resource. ### Claim 9 (depends on 8) The reference signal sending apparatus according to claim 8, wherein each of the at least one first time-frequency resource group occupies 4N REs, each of the at least one second time-frequency resource group occupies 4M REs, N is an integer greater than or equal to 1, and M is an integer greater than or equal to 1. ### Claim 10 (depends on 8) The reference signal sending apparatus according to claim 8, wherein each of the at least one first time-frequency resource group occupies 2N REs, each of the at least one second time-frequency resource group occupies 2M REs, N is an integer greater than or equal to 1, and M is an integer greater than or equal to 1. ### Claim 11 (depends on 10) The reference signal sending apparatus according to claim 10, wherein each of the at least one first time-frequency resource group occupies two REs, and each of the at least one second time-frequency resource group occupies two REs. ### Claim 12 (depends on 7) The reference signal sending apparatus according to claim 7, wherein either one of the following situations exists: (a) a function of a reference signal of the first type is different from a function of a reference signal of the second type, and the function of the reference signal of the first type and the function of the reference signal of the second type are two of the following functions: automatic gain control (AGC) adjustment, time-frequency synchronization, phase compensation, physical data channel demodulation, physical control channel demodulation, channel state information measurement, beam state information measurement, beam refinement information measurement, radio resource management (RRM) measurement, or positioning measurement; or (b) uplink/downlink directions of a reference signal of the first type and a reference signal of the second type are different. ### Claim 13 (depends on 7) The reference signal sending apparatus according to claim 7, wherein the programming instructions further instruct the processor to: send the first reference signal to a first receiving device; and send the second reference signal to a second receiving device by using the second code resource, wherein the reference signal sending apparatus is a network device, the first receiving device is a terminal device, and the second receiving device is a network device. ### Claim 14 A reference signal receiving apparatus comprising: a processor; and a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for being executed by the processor, the programming instructions, when executed, instruct the processor to: determine a first code resource, wherein the first code resource is orthogonal to a second code resource, the first code resource is used to transmit a first reference signal, the second code resource is used to transmit a second reference signal, the first reference signal is a reference signal of a first type, the second reference signal is a reference signal of a second type, and the first type is different from the second type; and receive the first reference signal by using the first code resource, wherein the first reference signal is carried by at least one first time-frequency resource group, wherein a value of a quantity of resource elements (REs) occupied by each of the at least one first time-frequency resource group is the same as a value of a length of the first code resource, and the first reference signal and the second reference signal are multiplexed on a time-frequency resource occupied by the at least one first time-frequency resource group, based on the first code resource and the second code resource. ### Claim 15 (depends on 14) The reference signal receiving apparatus according to claim 14, wherein the second reference signal is carried by at least one second time-frequency resource group, wherein a value of a quantity of REs occupied by each of the at least one second time-frequency resource group is the same as a value of a length of the second code resource, and the at least one second time-frequency resource group and the at least one first time-frequency resource group occupy a same time-frequency resource. ### Claim 16 (depends on 15) The reference signal receiving apparatus according to claim 15, wherein each of the at least one first time-frequency resource group occupies 4N REs, each of the at least one second time-frequency resource group occupies 4M REs, N is an integer greater than or equal to 1, and M is an integer greater than or equal to 1. ### Claim 17 (depends on 15) The reference signal receiving apparatus according to claim 15, wherein each of the at least one first time-frequency resource group occupies 2N REs, each of the at least one second time-frequency resource group occupies 2M REs, N is an integer greater than or equal to 1, and M is an integer greater than or equal to 1. ### Claim 18 (depends on 17) The reference signal receiving apparatus according to claim 17, wherein each of the at least one first time-frequency resource group occupies two REs, and each of the at least one second time-frequency resource group occupies two REs. ### Claim 19 (depends on 14) The reference signal receiving apparatus according to claim 14, wherein either one of the following exists: (a) a function of a reference signal of the first type is different from a function of a reference signal of the second type, and the function of the reference signal of the first type and the function of the reference signal of the second type are two of the following functions: automatic gain control (AGC) adjustment, time-frequency synchronization, phase compensation, physical data channel demodulation, physical control channel demodulation, channel state information measurement, beam state information measurement, beam refinement information measurement, radio resource management (RRM) measurement, and positioning measurement; or (b) uplink/downlink directions of a function of a reference signal of the first type and a reference signal of the second type are different. ### Claim 20 (depends on 14) The reference signal receiving apparatus according to claim 14, wherein the second reference signal is sent to a second receiving device, the first reference signal and the second reference signal are sent by a first sending device, the first sending device is a network device, the reference signal receiving apparatus is a terminal device, and the second receiving device is a network device.