# US 10,763,944 B2 · Transmission method using dynamically adjusted beam set, base station, and terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,763,944 B2 - Document ID: US10763944B2 - Status: Granted - Kind: B2 - Application number: 16/444,679 - Filed: 2019-06-18 - Published: 2019-10-03 - Granted: 2020-09-01 - Earliest claimed: 2016-12-19 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Leiming Zhang; Ming Lei; Yifan Liu - Web page: https://patentgrep.com/patent/US10763944B2 ## CPC - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04B 7/0408: using two or more beams, i.e. beam diversity - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0473: {taking constraints in layer or codeword to antenna mapping into account} - H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection} - H04B 7/068: {using space frequency diversity (space-frequency coding H04L1/0606)} - H04B 7/088: {using beam selection} - H04W 72/04: Wireless resource allocation - H04B 7/0482: {Adaptive codebooks} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract Embodiments of the present invention relate to a transmission method using a dynamically adjusted beam set, a base station, and a terminal. The method includes: sending, by the base station, first indication information to a terminal using first layer signaling, where the first indication information indicates a first beam set; sending, by the base station, second indication information to the terminal using second layer signaling, where the second indication information indicates at least one beam in the first beam set; and sending, by the base station, data to the terminal using the at least one beam. ## Claims ### Claim 1 A transmission method, comprising: sending, by a base station, first indication information to a terminal using first layer signaling, wherein the first indication information indicates a first beam set; sending, by the base station, second indication information to the terminal using second layer signaling, wherein the second indication information indicates at least one beam in the first beam set; and sending, by the base station, a signal to the terminal using the at least one beam. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first layer signaling is higher layer signaling, and the second layer signaling is physical layer signaling or Media Access Control (MAC) layer signaling. ### Claim 3 (depends on 1) The method according to claim 1, wherein the signal comprises data or a reference signal, and after the sending, by the base station, a signal to the terminal using the at least one beam, the method further comprises: receiving, by the base station, beam status information sent by the terminal, wherein the beam status information indicates whether each of the at least one beam is available. ### Claim 4 (depends on 1) The method according to claim 1, wherein the first indication information is a beam index of each beam in the first beam set or a codebook index of each beam in the first beam set. ### Claim 5 (depends on 1) The method according to claim 1, wherein the second indication information uses an indication manner of a bitmap that is based on the first beam set. ### Claim 6 (depends on 1) The method according to claim 1, wherein the signal comprises data and a reference signal, and the sending, by the base station, a signal to the terminal using the at least one beam comprises: sending, by the base station, the data and the reference signal to the terminal by cyclically using the at least one beam. ### Claim 7 A receiving method, comprising: receiving, by a terminal, first indication information from a base station using first layer signaling, wherein the first indication information indicates a first beam set; receiving, by the terminal, second indication information from the base station using second layer signaling, wherein the second indication information indicates at least one beam in the first beam set; and receiving, by the terminal, a signal from the base station using the at least one beam. ### Claim 8 (depends on 7) The method according to claim 7, wherein the first layer signaling is higher layer signaling, and the second layer signaling is physical layer signaling or Media Access Control (MAC) layer signaling. ### Claim 9 (depends on 7) The method according to claim 7, wherein the signal comprises data or a reference signal, and after the receiving, by the terminal, a signal from the base station using the at least one beam, the method further comprises: sending, by the terminal, beam status information to the base station, wherein the beam status information indicates whether each of the at least one beam is available. ### Claim 10 (depends on 7) The method according to claim 7, wherein the first indication information is a beam index of each beam in the first beam set or a codebook index of each beam in the first beam set. ### Claim 11 (depends on 7) The method according to claim 7, wherein the second indication information uses an indication manner of a bitmap that is based on the first beam set. ### Claim 12 (depends on 7) The method according to claim 7, wherein the at least one beam is two beams, and the receiving, by the terminal, signal from the base station using the two beams comprises: determining, by the terminal, that a space frequency block coding (SFBC) transmit diversity technology is used in a transmission method of the base station; and receiving, by the terminal, the signal from the base station based on two antenna ports. ### Claim 13 (depends on 7) The method according to claim 7, wherein the signal comprises data, and the receiving, by the terminal, a signal from the base station using the at least one beam comprises: determining, by the terminal, that a transmission method of the base station is sending the data by cyclically using the at least one beam and sending a reference signal using a common port; and receiving, by the terminal, the data from the base station by cyclically using the at least one beam, and receiving the reference signal using the common port. ### Claim 14 (depends on 7) The method according to claim 7, wherein the signal comprises data and a reference signal, and the receiving, by the terminal, a signal from the base station using the at least one beam comprises: receiving, by the terminal from the base station using the at least one beam, the data and the reference signal that are sent by the base station to the terminal by cyclically using the at least one beam. ### Claim 15 A terminal, comprising: at least one processor, and a transceiver, wherein the at least one processor is configured to: control the transceiver to receive first indication information from a base station using first layer signaling, wherein the first indication information indicates a first beam set; control the transceiver to receive second indication information from the base station using second layer signaling, wherein the second indication information indicates at least one beam in the first beam set; and control the transceiver to receive a signal from the base station using the at least one beam. ### Claim 16 (depends on 15) The terminal according to claim 15, wherein the first layer signaling is higher layer signaling, and the second layer signaling is physical layer signaling or Media Access Control (MAC) layer signaling. ### Claim 17 (depends on 15) The terminal according to claim 15, wherein the signal comprises data or a reference signal, and the at least one processor is further configured to: after controlling the transceiver to receive the signal from the base station using the at least one beam, control the transceiver to send beam status information to the base station, wherein the beam status information indicates whether each of the at least one beam is available. ### Claim 18 (depends on 15) The terminal according to claim 15, wherein the first indication information is a beam index of each beam in the first beam set or a codebook index of each beam in the first beam set. ### Claim 19 (depends on 15) The terminal according to claim 15, wherein the second indication information uses an indication manner of a bitmap that is based on the first beam set. ### Claim 20 (depends on 15) The terminal according to claim 15, wherein the signal comprises data and a reference signal, and the at least one processor is configured to control the transceiver to receive, from the base station using the at least one beam, the data and the reference signal that are sent by the base station to the terminal by cyclically using the at least one beam.