# US 12,192,769 B2 · Methods and apparatus for securing communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,769 B2 - Document ID: US12192769B2 - Status: Granted - Kind: B2 - Application number: 17/621,195 - Filed: 2019-08-22 - Published: 2022-11-17 - Granted: 2025-01-07 - Earliest claimed: 2019-08-22 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Pengfei Xia; Bin Liu; Young Hoon Kwon - Web page: https://patentgrep.com/patent/US12192769B2 ## CPC - H04B 7/0617: {for beam forming} - H04W 12/122: Counter-measures against attacks; Protection against rogue devices - H04B 7/0408: using two or more beams, i.e. beam diversity - H04B 7/086: {using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming} - H04K 1/10: by using two signals transmitted simultaneously or successively - H04L 1/0071: {Use of interleaving (interleaving per se H03M13/27)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04W 12/03: Protecting confidentiality, e.g. by encryption - H04W 16/28: using beam steering - H04L 63/0435: {wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption (cryptographic mechanisms or cryptographic arrangements for symmetric key encryption H04L9/06)} - H04L 63/1475: {Passive attacks, e.g. eavesdropping or listening without modification of the traffic monitored} - H04L 63/18: {using different networks or channels, e.g. using out of band channels (cryptographic mechanisms or cryptographic arrangements for key distribution involving distinctive intermediate devices or communication paths H04L9/0827; cryptographic mechanisms or cryptographic arrangements for authentication using a plurality of channels H04L9/3215)} - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04K: SECRET COMMUNICATION; JAMMING OF COMMUNICATION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method includes generating an encoded and secured message comprising at least two parts, and transmitting the at least two parts of the encoded and secured message over at least two beam pair links (BPLs) associated with the first device and the second device, each part of the at least two parts being transmitted over a single BPL. ## Claims ### Claim 1 A method comprising: generating, at a physical (PHY) layer of a first device, an encoded and secured message comprising at least two parts, the generating including: encoding, at the PHY layer of the first device, a message to produce an encoded message, and splitting, at the PHY layer of the first device, the encoded message into at least two encoded parts; or splitting, at the PHY layer of the first device, a message into at least two unencoded parts, and encoding, at the PHY layer of the first device, the at least two unencoded parts to produce at least two encoded parts; and securing, at the PHY layer of the first device, the at least two encoded parts to produce the encoded and secured message comprising the at least two parts; transmitting, by the first device, control information indicating a total number of secured and encoded parts of the encoded and secured message; and after the transmitting the control information, transmitting, by the first device, the at least two parts of the encoded and secured message to a second device over at least two beam pair links (BPLs) associated with the first device and the second device, each of the at least two parts being transmitted over a single BPL. ### Claim 2 (depends on 1) The method of claim 1, wherein the encoding the message to produce the encoded message comprises channel encoding the message and the securing comprising security encoding the at least two encoded parts. ### Claim 3 (depends on 1) The method of claim 1, further comprising interleaving, by the first device, the encoded and secured message. ### Claim 4 (depends on 1) The method of claim 1, wherein the transmitting the at least two parts occurs over different time resources. ### Claim 5 (depends on 1) The method of claim 1, further comprising determining, by the first device, the at least two BPLs. ### Claim 6 (depends on 5) The method of claim 5, wherein the determining the at least two BPLs comprises: sounding, by the first device, reference signals using transmit beams associated with the first device; receiving, by the first device from the second device, indices of BPLs associated with received reference signals exceeding a signal strength threshold; and selecting, by the first device, the at least two BPLs from BPLs associated with the indices of the BPLs received from the second device. ### Claim 7 (depends on 1) The method of claim 1, wherein the control information further includes an indicator of the at least two BPLs. ### Claim 8 A method the method comprising: receiving, by a second device, control information indicating a total number of secured and encoded parts of an encoded and secured message; after the receiving the control information, receiving, by the second device, at least two parts of the encoded and secured message from a first device over at least two beam pair links (BPLs), each of the at least two parts being received over a single BPL; and generating, at a physical (PHY) layer of the second device, a received message from the at least two parts of the encoded and secured message, the generating including: unsecuring, at the PHY layer of the second device, the at least two parts of the encoded and secured message to produce at least two encoded parts; and combining, at the PHY layer of the second device, the at least two encoded parts, and decoding, at the PHY layer of the second device, the combined at least two encoded parts to produce the received message; or decoding, at the PHY layer of the second device, the at least two encoded parts to produce at least two unencoded parts, and combining, at the PHY layer of the second device, the at least two unencoded parts to produce the received message. ### Claim 9 (depends on 8) The method of claim 8, wherein the decoding the combined at least two encoded parts to produce the received message comprises channel decoding and the unsecuring comprising security decoding. ### Claim 10 (depends on 8) The method of claim 8, further comprising de-interleaving, by the first device, the at least two encoded parts of the encoded and secured message. ### Claim 11 (depends on 8) The method of claim 8, further comprising determining, by the second device, BPLs associated with the second device and the first device. ### Claim 12 (depends on 11) The method of claim 11, wherein the determining the BPLs associated with the second device and the first device comprises: receiving, by the second device from the first device, beamformed reference signals using receive beams associated with the second device; and transmitting, by the second device to the first device, indices of BPLs associated with received reference signals exceeding a signal strength threshold. ### Claim 13 (depends on 8) The method of claim 8, wherein the control information further includes an indicator of the at least two BPLs. ### Claim 14 A method comprising: generating, at a physical (PHY) layer of a device, a second message, the generating the second message including: encoding, at the PHY layer of the device, a first message to produce an encoded message, and splitting, at the PHY layer of the device, the encoded message into at least two encoded parts; or splitting, at the PHY layer of the device, a first message into at least two unencoded parts, and encoding, at the PHY layer of the device, the at least two unencoded parts to produce at least two encoded parts; generating, by the device, control information comprising a first indicator indicating a total number of secured and encoded parts of the second message, a second indicator indicating an ordering index of a first secured and encoded part of the at least two encoded parts scheduled by the control information, and a third indicator indicating a beam pair link (BPL) index used to communicate the first secured and encoded part scheduled by the control information; transmitting, by the device, the control information; and after the transmitting the control information, transmitting the second message including the secured and encoded parts to a second device over at least two beam pair links (BPLs) associated with the device and the second device, each of the at least two encoded parts being transmitted over a single BPL. ### Claim 15 (depends on 14) The method of claim 14, wherein the control information is transmitted using one of downlink control information (DCI) message, radio resource control (RRC) message, or a media access control (MAC) control element (CE) message. ### Claim 16 (depends on 14) The method of claim 14, wherein the control information further comprises a fourth indicator indicating a time or frequency location of a radio resource conveying the control information. ### Claim 17 A first device comprising: one or more processors; and a non-transitory memory storage comprising instructions that, when executed by the one or more processors, cause the first device to perform operations including: generating, at a physical (PHY) layer of the first device, an encoded and secured message comprising at least two parts, the generating including: encoding, at the PHY layer of the first device, a message to produce an encoded message, and splitting, at the PHY layer of the first device, the encoded message into at least two encoded parts; or splitting, at the PHY layer of the first device, a message into at least two unencoded parts, and encoding, at the PHY layer of the first device, the at least two unencoded parts to produce at least two encoded parts; and securing, at the PHY layer of the first device, the at least two encoded parts to produce the encoded and secured message comprising the at least two parts; transmitting control information indicating a total number of secured and encoded parts of the encoded and secured message; and after the transmitting the control information, transmitting the at least two parts of the encoded and secured message to a second device over at least two beam pair links (BPLs) associated with the first device and the second device, each of the at least two parts being transmitted over a single BPL. ### Claim 18 (depends on 17) The first device of claim 17, wherein the operations further comprise interleaving the encoded and secured message. ### Claim 19 (depends on 17) The first device of claim 17, wherein the operations further comprise determining the at least two BPLs. ### Claim 20 A first device comprising: one or more processors; and a non-transitory memory storage comprising instructions that, when executed by the one or more processors, cause the first device to perform operations including: receiving control information indicating a total number of secured and encoded parts of an encoded and secured message; after the receiving the control information, receiving at least two parts of the encoded and secured message from a second device over at least two beam pair links (BPLs), each of the at least two parts being received over a single BPL; and generating, at a physical (PHY) layer of the first device, a received message from the at least two parts of the encoded and secured message, the generating including: unsecuring, at the PHY layer of the first device, the at least two parts of the encoded and secured message to produce at least two encoded parts; and combining, at the PHY layer of the first device, the at least two encoded parts, and decoding, at the PHY layer of the second device, the combined at least two encoded parts to produce the received message; or decoding, at the PHY layer of the first device, the at least two encoded parts to produce at least two unencoded parts, and combining, at the PHY layer of the second device, the at least two unencoded parts to produce the received message. ### Claim 21 (depends on 20) The first device of claim 20, wherein the operations further comprise: determining BPLs associated with the first device and the second device. ### Claim 22 (depends on 20) The first device of claim 20, wherein the control information further includes an indicator of the at least two BPLs. ### Claim 23 (depends on 20) The first device of claim 20, wherein the operations further comprise de-interleaving the at least two encoded parts of the encoded and secured message. ### Claim 24 (depends on 1) The method of claim 1, wherein the at least two parts include at least 3 parts, and the at least two BPLs include at least 3 BPLs, and wherein the control information is in one of downlink control information (DCI), a radio resource control (RRC) message, or a media access control (MAC) control element (CE) message.