# US 2019/0173716 A1 · Signal Sending Method, Network Device, and Terminal Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173716 A1 - Document ID: US20190173716A1 - Status: Published application - Kind: A1 - Application number: 16/272,084 - Filed: 2019-02-11 - Published: 2019-06-06 - Earliest claimed: 2016-08-12 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yongxia Lyu; Zhiheng Guo - Web page: https://patentgrep.com/patent/US20190173716A1 ## CPC - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04J 1/065: {Synchronisation of carrier sources at the receiving station with the carrier source at the transmitting station} - H04L 5/0023: {Time-frequency-space} - H04L 5/0039: {Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another} - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04L 27/2613: {Structure of the reference signals} - H04L 27/2657: {Carrier synchronisation} - H04L 27/2666: {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length} - H04J 11/0073: {Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group} - H04J 11/0076: {Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group} - H04J 13/0062: {Zadoff-Chu} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - 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: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract A signal receiving method, an apparatus and a communication system. The network device determines a subcarrier location of a to-be-sent first signal and a subcarrier location of a to-be-sent second signal, where subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, a quantity of the subcarriers occupied by the first signal is the same as a quantity of the subcarriers occupied by the second signal, and a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, the first signal and the second signal are primary synchronization signals. The network device sends the first signal to the terminal device and sends the second signal to the terminal device or other terminal device. ## Claims ### Claim 1 A signal receiving method, comprising: receiving, by a terminal device, from a network device, a first signal and a second signal, wherein subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, wherein subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, wherein a quantity of the subcarriers occupied by the first signal is the same as a quantity of the subcarriers occupied by the second signal, wherein a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, and wherein the first signal and the second signal are primary synchronization signals. ### Claim 2 (depends on 1) The method according to claim 1, wherein the continuous subcarriers in the first group of resource elements and the continuous subcarriers in the second group of resource elements each exclude a zeroth subcarrier, wherein the first group of resource elements and the second group of resource elements occupy a same quantity of symbols or different quantities of symbols in a time domain, and further occupy one symbol or at least two consecutive symbols in the time domain. ### Claim 3 (depends on 1) The method according to claim 1, wherein a correspondence between a sequence number of a subcarrier in the first group of resource elements and at least one of a modulation symbol or a sequence element of the first signal is the same as a correspondence between a sequence number of a subcarrier in the second group of resource elements and at least one of a modulation symbol or a sequence element of the second signal. ### Claim 4 (depends on 1) The method according to claim 1, wherein the method further comprises: receiving, by the terminal device, from the network device, a third signal and a fourth signal, wherein subcarriers occupied by the third signal are continuous subcarriers in a third group of resource elements, wherein subcarriers occupied by the fourth signal are continuous subcarriers in a fourth group of resource elements, wherein a quantity of the subcarriers occupied by the third signal is the same as a quantity of the subcarriers occupied by the fourth signal, wherein a subcarrier spacing in the third group of resource elements is the same as the subcarrier spacing in the first group of resource elements, wherein a subcarrier spacing in the fourth group of resource elements is the same as the subcarrier spacing in the second group of resource elements, and wherein the third signal and the fourth signal comprise at least secondary synchronization signals. ### Claim 5 (depends on 4) The method according to claim 4, wherein a correspondence between a sequence number of a subcarrier in the third group of resource elements and at least one of a modulation symbol or a sequence element of the third signal is the same as a correspondence between a sequence number of a subcarrier in the fourth group of resource elements and at least one of a modulation symbol or a sequence element of the fourth signal. ### Claim 6 (depends on 4) The method according to claim 4, wherein the method further comprises: receiving, by the terminal device, from the network device, a fifth signal and a sixth signal, wherein subcarriers occupied by the fifth signal are continuous subcarriers in a fifth group of resource elements, wherein subcarriers occupied by the sixth signal are continuous subcarriers in a sixth group of resource elements, wherein a quantity of the subcarriers occupied by the fifth signal is the same as a quantity of the subcarriers occupied by the sixth signal, wherein a subcarrier spacing in the fifth group of resource elements is the same as the subcarrier spacing in at least one of the first group of resource elements or the third group of resource elements, wherein a subcarrier spacing in the sixth group of resource elements is the same as the subcarrier spacing in at least one of the second group of resource elements or the fourth group of resource elements, and wherein the fifth signal and the sixth signal are at least one of first broadcast channel signals or first system information block signals. ### Claim 7 (depends on 6) The method according to claim 6, wherein a location of a resource element that carries a data signal of the fifth signal and that is in the fifth group of resource elements is the same as a location of a resource element that carries a data signal of the sixth signal and that is in the sixth group of resource elements, wherein a location of a resource element that carries a pilot signal of the fifth signal and that is in the fifth group of resource elements is the same as a location of a resource element that carries a pilot signal of the sixth signal and that is in the sixth group of resource elements, and wherein the resource element is a frequency domain resource in a unit symbol. ### Claim 8 (depends on 6) The method according to claim 6, wherein at least two groups of resource elements in the first group of resource elements, the third group of resource elements, and the fifth group of resource elements occupy different frequency domain resources on a same time domain resource, and wherein at least two groups of resource elements in the second group of resource elements, the fourth group of resource elements, and the sixth group of resource elements occupy different frequency domain resources on a same time domain resource. ### Claim 9 (depends on 6) The method according to claim 6, wherein at least two groups of resource elements in the first group of resource elements, the third group of resource elements, and the fifth group of resource elements are located at a first carrier, wherein at least two groups of resource elements in the second group of resource elements, the fourth group of resource elements, and the sixth group of resource elements are located at a second carrier, and wherein the first carrier and the second carrier occupy different frequency domain resources. ### Claim 10 (depends on 9) The method according to claim 9, wherein the first group of resource elements occupies at least one frequency domain resource unit in the first carrier, wherein the second group of resource elements occupies at least one frequency domain resource unit in the second carrier, and wherein a sequence number of the frequency domain resource unit that is occupied by the first group of resource elements in the first carrier is the same as a sequence number of the frequency domain resource unit that is occupied by the second group of resource elements in the second carrier; wherein the third group of resource elements occupies at least one frequency domain resource unit in the first carrier, wherein the fourth group of resource elements occupies at least one frequency domain resource unit in the second carrier, and wherein a sequence number of the frequency domain resource unit that is occupied by the third group of resource elements in the first carrier is the same as a sequence number of the frequency domain resource unit that is occupied by the fourth group of resource elements in the second carrier; wherein the fifth group of resource elements occupies at least one frequency domain resource unit in the first carrier, wherein the sixth group of resource elements occupies at least one frequency domain resource unit in the second carrier, and wherein a sequence number of the frequency domain resource unit that is occupied by the fifth group of resource elements in the first carrier is the same as a sequence number of the frequency domain resource unit that is occupied by the sixth group of resource elements in the second carrier; and wherein the frequency domain resource unit is a group of subcarriers. ### Claim 11 An apparatus, comprising: a communication interface; a processor; and a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to: receive, from a network device, through the communication interface, a first signal and a second signal, wherein subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, wherein subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, wherein a quantity of subcarriers occupied by the first signal is the same as a quantity of subcarriers occupied by the second signal, and wherein a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, and wherein the first signal and the second signal are primary synchronization signals; and process the first signal and the second signal. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the continuous subcarriers in the first group of resource elements and the continuous subcarriers in the second group of resource elements each exclude a zeroth subcarrier, wherein the first group of resource elements and the second group of resource elements occupy at least one of a same quantity of symbols or different quantities of symbols in a time domain, and further occupy one symbol or at least two consecutive symbols in the time domain. ### Claim 13 (depends on 11) The apparatus according to claim 11, wherein a correspondence between a sequence number of a subcarrier in the first group of resource elements and at least one of a modulation symbol or a sequence element of the first signal is the same as a correspondence between a sequence number of a subcarrier in the second group of resource elements and at least one of a modulation symbol or a sequence element of the second signal. ### Claim 14 (depends on 11) The apparatus according to claim 11, wherein the program further includes instructions to: receive, from the network device, a third signal and a fourth signal, wherein subcarriers occupied by the third signal are continuous subcarriers in a third group of resource elements, wherein subcarriers occupied by the fourth signal are continuous subcarriers in a fourth group of resource elements, wherein a quantity of the subcarriers occupied by the third signal is the same as a quantity of the subcarriers occupied by the fourth signal, wherein a subcarrier spacing in the third group of resource elements is the same as the subcarrier spacing in the first group of resource elements, wherein a subcarrier spacing in the fourth group of resource elements is the same as the subcarrier spacing in the second group of resource elements, and wherein the third signal and the fourth signal comprise at least secondary synchronization signals. ### Claim 15 (depends on 11) The apparatus according to claim 11, wherein the program further includes instructions to: receive, by the terminal device, from the network device, a fifth signal and a sixth signal, wherein subcarriers occupied by the fifth signal are continuous subcarriers in a fifth group of resource elements, wherein subcarriers occupied by the sixth signal are continuous subcarriers in a sixth group of resource elements, wherein a quantity of the subcarriers occupied by the fifth signal is the same as a quantity of the subcarriers occupied by the sixth signal, wherein a subcarrier spacing in the fifth group of resource elements is the same as the subcarrier spacing in at least one of the first group of resource elements or the third group of resource elements, wherein a subcarrier spacing in the sixth group of resource elements is the same as the subcarrier spacing in at least one of the second group of resource elements or the fourth group of resource elements, and wherein the fifth signal and the sixth signal are at least one of first broadcast channel signals or first system information block signals. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein a location of a resource element that carries a data signal of the fifth signal and that is in the fifth group of resource elements is the same as a location of a resource element that carries a data signal of the sixth signal and that is in the sixth group of resource elements, wherein a location of a resource element that carries a pilot signal of the fifth signal and that is in the fifth group of resource elements is the same as a location of a resource element that carries a pilot signal of the sixth signal and that is in the sixth group of resource elements, and wherein the resource element is a frequency domain resource in a unit symbol. ### Claim 17 (depends on 15) The apparatus according to claim 15, wherein at least two groups of resource elements in the first group of resource elements, the third group of resource elements, and the fifth group of resource elements occupy different frequency domain resources on a same time domain resource, and wherein at least two groups of resource elements in the second group of resource elements, the fourth group of resource elements, and the sixth group of resource elements occupy different frequency domain resources on a same time domain resource. ### Claim 18 (depends on 15) The apparatus according to claim 15, wherein at least two groups of resource elements in the first group of resource elements, the third group of resource elements, and the fifth group of resource elements are located at a first carrier, wherein at least two groups of resource elements in the second group of resource elements, the fourth group of resource elements, and the sixth group of resource elements are located at a second carrier, and wherein the first carrier and the second carrier occupy different frequency domain resources. ### Claim 19 (depends on 18) The method according to claim 18, wherein the first group of resource elements occupies at least one frequency domain resource unit in the first carrier, wherein the second group of resource elements occupies at least one frequency domain resource unit in the second carrier, and wherein a sequence number of the frequency domain resource unit that is occupied by the first group of resource elements in the first carrier is the same as a sequence number of the frequency domain resource unit that is occupied by the second group of resource elements in the second carrier; wherein the third group of resource elements occupies at least one frequency domain resource unit in the first carrier, wherein the fourth group of resource elements occupies at least one frequency domain resource unit in the second carrier, and wherein a sequence number of the frequency domain resource unit that is occupied by the third group of resource elements in the first carrier is the same as a sequence number of the frequency domain resource unit that is occupied by the fourth group of resource elements in the second carrier; wherein the fifth group of resource elements occupies at least one frequency domain resource unit in the first carrier, wherein the sixth group of resource elements occupies at least one frequency domain resource unit in the second carrier, and wherein a sequence number of the frequency domain resource unit that is occupied by the fifth group of resource elements in the first carrier is the same as a sequence number of the frequency domain resource unit that is occupied by the sixth group of resource elements in the second carrier; and wherein the frequency domain resource unit is a group of subcarriers. ### Claim 20 A communication system, comprising: a network device; and a terminal device; wherein the network device determines a subcarrier location of a to-be-sent first signal and a subcarrier location of a to-be-sent second signal, wherein subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, wherein a quantity of the subcarriers occupied by the first signal is the same as a quantity of the subcarriers occupied by the second signal, wherein a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, and wherein the first signal and the second signal are primary synchronization signals; wherein the network device sends the first signal at the determined subcarrier location of the first signal to the terminal device; wherein the network device sends the second signal at the determined subcarrier location of the second signal; and wherein the terminal device receives the first signal.