# US 12,015,572 B2 · Communication method and communications apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,572 B2 - Document ID: US12015572B2 - Status: Granted - Kind: B2 - Application number: 17/213,559 - Filed: 2021-03-26 - Published: 2021-07-15 - Granted: 2024-06-18 - Earliest claimed: 2018-09-28 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jianqin Liu - Web page: https://patentgrep.com/patent/US12015572B2 ## 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)} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - 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 communication method and a communications apparatus are disclosed. The method includes: receiving a discovery reference signal from a network device, where the discovery reference signal includes one or more first signals and one or more second signals, and the one or more first signals include at least a common signal block or a channel state information-reference signal (CSI-RS). The one or more first signals may be used to carry configuration information of the one or more second signals, or configuration information of the discovery reference signal may be received from the network device. The corresponding apparatus is also disclosed. By virtue of the disclosed communication method and apparatus, composition of the discovery reference signal can be accurately indicated, to avoid frequent channel discovery, and improve resource utilization efficiency of the discovery reference signal. ## Claims ### Claim 1 A communication method, comprising: receiving a discovery reference signal from a network device, wherein the discovery reference signal comprises one or more first signals and one or more second signals, and the one or more first signals comprise at least a common signal block or a channel state information-reference signal (CSI-RS), the one or more first signals carry configuration information of the one or more second signals, and the configuration information of the one or more second signals is indicative of at least whether the discovery reference signal comprises the one or more second signals, or indicative of at least a type of the one or more second signals comprised in the discovery reference signal, wherein the one or more second signals comprise other system information (OSI) determined according to a predetermined rule. ### Claim 2 (depends on 1) The communication method according to claim 1, wherein the one or more second signals u comprise one or more of: remaining minimum system information (RMSI), a paging message, or a random access response. ### Claim 3 (depends on 2) The communication method according to claim 2, wherein the one or more second signals further comprise one or more of: a control channel of the remaining minimum system information (RMSI), a control channel of the other system information (OSI), a control channel of the paging message, or a control channel of the random access response. ### Claim 4 (depends on 1) The communication method according to claim 1, wherein a sequence initialization value or a sequence cyclic shift value of the CSI-RS included in the one or more first signals carries the configuration information of the one or more second signals. ### Claim 5 (depends on 1) The communication method according to claim 1, wherein the common signal block included in the one or more first signals comprises a demodulation reference signal of a physical broadcast channel; and a sequence initialization value or a sequence cyclic shift value of the demodulation reference signal of the physical broadcast channel carries the configuration information of the one or more second signals. ### Claim 6 (depends on 1) The communication method according to claim 1, wherein the common signal block included in the one or more first signals comprises a physical broadcast channel; and a payload of the physical broadcast channel carries the configuration information of the one or more second signals. ### Claim 7 (depends on 1) The communication method according to claim 1, wherein the common signal block included in the one or more first signals comprises a physical broadcast channel; and a payload of the physical broadcast channel carries a mapping pattern of the one or more first signals and the one or more second signals. ### Claim 8 (depends on 1) The communication method according to claim 1, wherein the one or more first signals further comprise remaining minimum system information (RMSI); the one or more second signals further comprise at least one of a paging message, or a random access response; and the RMSI carries the configuration information of the one or more second signals. ### Claim 9 (depends on 1) The communication method according to claim 1, wherein the predetermined rule complies with that a priority of on-demand OSI of a terminal device is higher than that of non-on-demand OSI. ### Claim 10 (depends on 1) The communication method according to claim 1, wherein the one or more second signals comprise paging message, the paging message is determined according to a rule complying with that a priority of a short paging message is higher than that of a normally scheduled paging message. ### Claim 11 (depends on 1) The communication method according to claim 1, wherein the one or more first signals carry information indicating a specific second signal included in the discovery reference signal, and a quantity of second signals included in the discovery reference signal. ### Claim 12 A communication method, comprising: receiving configuration information of a discovery reference signal from a network device, wherein the discovery reference signal comprises one or more first signals and one or more second signals, the one or more first signals comprise at least a common signal block or a channel state information-reference signal (CSI-RS), and the configuration information of the discovery reference signal is indicative of at least whether the discovery reference signal comprises the one or more second signals, or indicative of at least a type of the one or more second signals comprised in the discovery reference signal; and receiving the discovery reference signal from the network device based on the configuration information of the discovery reference signal, wherein the one or more second signals comprise other system information (OSI) determined according to a predetermined rule. ### Claim 13 (depends on 12) The communication method according to claim 12, wherein receiving the configuration information of the discovery reference signal comprises: receiving downlink control information from the network device, wherein the downlink control information carries the configuration information of the discovery reference signal. ### Claim 14 (depends on 13) The communication method according to claim 13, wherein receiving the downlink control information from the network device comprises: receiving the downlink control information through a common control channel of the one or more second signals. ### Claim 15 A communication method, comprising: sending configuration information of a discovery reference signal to a terminal device, wherein the discovery reference signal comprises one or more first signals, and one or more second signals; the one or more first signals comprise at least a common signal block or a channel state information-reference signal (CSI-RS); and the configuration information of the discovery reference signal is indicative of at least whether the discovery reference signal comprises the one or more second signals, or indicative of at least a type of the one or more second signals comprised in the discovery reference signal; and sending the discovery reference signal to the terminal device based on the configuration information of the discovery reference signal, wherein the one or more second signals comprise other system information (OSI) determined according to a predetermined rule. ### Claim 16 (depends on 15) The communication method according to claim 15, wherein sending the configuration information of the discovery reference signal to the terminal device comprises: sending downlink control information to the terminal device, wherein the downlink control information carries the configuration information of the discovery reference signal. ### Claim 17 (depends on 16) The communication method according to claim 16, wherein sending the downlink control information to the terminal device comprises: sending the downlink control information to the terminal device through a common control channel of the one or more second signals.