# US 2026/0101313 A1 · Communication method and related device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0101313 A1 - Document ID: US20260101313A1 - Status: Published application - Kind: A1 - Application number: 19/417,935 - Filed: 2025-12-12 - Published: 2026-04-09 - Earliest claimed: 2023-06-15 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Rojan Chitrakar; Lei Huang; Yunbo Li; Xun Yang - Web page: https://patentgrep.com/patent/US20260101313A1 ## CPC - H04W 12/02: Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII] - H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management - G01S 13/765: {with exchange of information between interrogator and responder} - H04B 1/7163: using impulse radio - H04W 12/08: Access security - H04L 61/35: {involving non-standard use of addresses for implementing network functionalities, e.g. coding subscription information within the address or functional addressing, i.e. assigning an address to a function} - H04W 8/26: Network addressing or numbering for mobility support - H04W 12/75: Temporary identity - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present application describes a communication method and related device. The method includes a first responder receiving from an initiator a first frame for initiating a ranging process. The first responder generates a first private address based on the first frame and information related to an identity of the first responder, and the first responder transmits a second frame carrying the first private address to the initiator. The method may be applied to ultra-wideband multi-millisecond ranging systems. According to this application, an initiator can verify whether a frame is really from an authorized responder in an ultra-wideband multi-millisecond ranging session. ## Claims ### Claim 1 A communication method of a first responder, comprising: receiving, from an initiator, a first frame for initiating a ranging process; generating a first private address based on the first frame and information related to an identity of the first responder; and transmitting a second frame carrying the first private address to the initiator. ### Claim 2 (depends on 1) The communication method according to claim 1, wherein the information related to the identity of the first responder comprises any one of: a public address of the first responder, multi-millisecond (MMS) ranging configuration requested by the first responder, a first random number generated by the first responder, or an identity resolving key (IRK) unique to the initiator and the first responder. ### Claim 3 (depends on 2) The communication method according to claim 2, wherein the first frame carries a second random number, and the second random number is associated with a second private address of the initiator; and the generating the first private address based on the first frame and information related to the identity of the first responder comprises: generating the first private address based on the second random number and the information related to the identity of the first responder. ### Claim 4 (depends on 3) The communication method according to claim 3, wherein the second private address is generated based on information related to an identity of a second responder, the generating a first private address based on the first frame and the information related to an identity of the first responder comprises: generating the first private address when it is determined that the second responder and the first responder are a same responder. ### Claim 5 (depends on 2) The communication method according to claim 2, wherein the transmitting the second frame carrying the first private address to the initiator comprises: transmitting the second frame carrying the first private address and the first random number to the initiator. ### Claim 6 (depends on 2) The communication method according to claim 2, wherein the IRK is a common IRK between the initiator and the first responder, or the IRK is one IRK of a pairwise IRK unique to the initiator and the first responder. ### Claim 7 (depends on 1) The communication method according to claim 1, wherein the first frame is a ranging initialization message (RIM) frame carrying a list associated with responders that are scheduled to participate in an MMS ranging, wherein the responders comprise the first responder; and the generating the first private address by using information related to the identity of the first responder comprises: generating the first private address when it is determined that the first responder is scheduled to a first access slot among multiple access slots based on the list. ### Claim 8 (depends on 1) The communication method according to claim 1, wherein the second frame comprises any one of: an advertising response (ADV-RESP) frame, a response (RESP) frame, or a report (RPRT) frame. ### Claim 9 A communication apparatus, comprising: a receiver configured to receive, by a first responder from an initiator, a first frame for initiating a ranging process; a processor configured to generate a first private address based on the first frame and information related to an identity of the first responder; and a transmitter, configured to transmit a second frame carrying the first private address to the initiator. ### Claim 10 (depends on 9) The communication apparatus according to claim 9, wherein the information related to the identity of the first responder comprises any one of: a public address of the first responder, multi-millisecond (MMS) ranging configuration requested by the first responder, a first random number generated by the first responder, or an identity resolving key (IRK) unique to the initiator and the first responder. ### Claim 11 (depends on 10) The communication apparatus according to claim 10, wherein the first frame carries a second random number, and the second random number is associated with a second private address of the initiator; and the processor is configured to: generate the first private address based on the second random number and the information related to the identity of the first responder. ### Claim 12 (depends on 11) The communication apparatus according to claim 11, wherein the second private address is generated based on information related to an identity of a second responder, and the processor is configured to: generate the first private address when it is determined that the second responder and the first responder are a same responder. ### Claim 13 (depends on 10) The communication apparatus according to claim 10, wherein the transmitter is configured to: transmit the second frame carrying the first private address and the first random number to the initiator. ### Claim 14 (depends on 10) The communication apparatus according to claim 10, wherein the IRK is a common IRK between the initiator and the responder, or the IRK is one IRK of a pairwise IRK unique to the initiator and the responder. ### Claim 15 A non-transitory computer-readable storage medium of a first responder that stores instructions, and when the instructions are run on a processor, the processor causes a communication apparatus to: receive, from an initiator, a first frame for initiating a ranging process; generate a first private address based on the first frame and information related to an identity of the first responder; and transmit a second frame carrying the first private address to the initiator. ### Claim 16 (depends on 15) The non-transitory computer-readable storage medium according to claim 15, wherein the information related to the identity of the first responder comprises any one of: a public address of the first responder, multi-millisecond (MMS) ranging configuration requested by the first responder, a first random number generated by the first responder, or an identity resolving key (IRK) unique to the initiator and the first responder. ### Claim 17 (depends on 16) The non-transitory computer-readable storage medium according to claim 16, wherein the first frame carries a second random number, and the second random number is associated with a second private address of the initiator; and the communication apparatus to generate a first private address based on the first frame and information related to an identity of the first responder further comprises the communication apparatus to: generate the first private address based on the second random number and the information related to the identity of the first responder. ### Claim 18 (depends on 17) The non-transitory computer-readable storage medium according to claim 17, wherein the second private address is generated based on information related to an identity of a second responder, and the generation of the first private address based on the first frame and information related to the identity of the first responder further comprises the communication apparatus to: generate the first private address when it is determined that the second responder and the first responder are the same responder. ### Claim 19 (depends on 16) The non-transitory computer-readable storage medium according to claim 16, wherein the transmission of the second frame carrying the first private address to the initiator further comprises the communication apparatus to: transmit the second frame carrying the first private address and the first random number to the initiator. ### Claim 20 (depends on 16) The non-transitory computer-readable storage medium according to claim 16, wherein the IRK is a common IRK between the initiator and the responder, or the IRK is one IRK of a pairwise IRK unique to the initiator and the responder.