# US 10,455,304 B2 · Method and apparatus for authentication in passive optical network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,304 B2 - Document ID: US10455304B2 - Status: Granted - Kind: B2 - Application number: 15/925,091 - Filed: 2018-03-19 - Published: 2018-07-26 - Granted: 2019-10-22 - Earliest claimed: 2007-07-13 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Wei Wu; Hai Gao - Web page: https://patentgrep.com/patent/US10455304B2 ## CPC - H04Q 11/0067: {Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring} - H04B 10/2589: {Bidirectional transmission} - H04B 10/27: Arrangements for networking - H04J 3/1694: {Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers (Passive Optical Networks H04Q11/0062)} - H04J 14/0238: {Wavelength allocation for communications one-to-many, e.g. multicasting wavelengths} - H04L 63/08: {for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32)} - H04L 63/0876: {based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint} - H04Q 2011/0079: {Operation or maintenance aspects} - H04Q: SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) - H04B: TRANSMISSION - 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) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method and apparatus for authentication in a passive optical network are disclosed. In the disclosure, a first terminal serial number of an ONU and a first logic registration code are transmitted from the ONU to an OLT; if the OLT determines that the first terminal serial number does not match a second terminal serial number stored on the OLT, the OLT judges whether the first logic registration code received from the ONU matches a second logic registration code stored on the OLT; the OLT stores the first terminal serial number received from the ONU on the OLT if the first logic registration code matches the second logic registration code. ## Claims ### Claim 1 A method for authentication in a passive optical network (PON) comprising an optical line terminal (OLT) and an optical network unit (ONU), the method comprising: receiving, by the OLT, a first terminal serial number of the ONU; receiving, by the OLT, a first logic registration code of the ONU, when the first terminal serial number does not match a second terminal serial number stored on the OLT; and recording, by the OLT, the first terminal serial number when the first logic registration code matches a second logic registration code stored on the OLT. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: assigning, by the OLT, a temporary ONU-ID to the ONU when the first terminal serial number does not match the second terminal serial number. ### Claim 3 (depends on 1) The method according to claim 1, further comprising: adopting, by the OLT, an ONU-ID as a formal ONU-ID to the ONU when the first terminal serial number matches with the second terminal serial number stored on the OLT. ### Claim 4 (depends on 3) The method according to claim 3, further comprising: receiving, by the OLT, a log-out message from the ONU; and in response to the reception of the log-out message, releasing, by the OLT, a binding relationship between the first terminal serial number of the ONU and the ONU-ID. ### Claim 5 (depends on 1) The method according to claim 1, wherein the first logic registration code is different from the first terminal serial number of the ONU. ### Claim 6 An optical line terminal (OLT) comprising: a first receiver, configured to receive a first terminal serial number of an ONU; the first receiver, configured to receive a first logic registration code of the ONU, when the first terminal serial number does not match the second terminal serial number; and a recorder, configured to record the first terminal serial number when the first logic registration code matches the second logic registration code. ### Claim 7 (depends on 6) The OLT according to claim 6, further comprising: an assigning module, configured to assign a temporary ONU-ID to the ONU when the first terminal serial number does not match the second terminal serial number. ### Claim 8 (depends on 6) The OLT according to claim 6, further comprising: an adopting module, configured to adopt an ONU-ID as a formal ONU-ID to the ONU when the first terminal serial number matches with the second terminal serial number stored on the OLT. ### Claim 9 (depends on 8) The OLT according to claim 8, wherein the first receiver is configured to receive a log-out message from the ONU, and release a binding relationship between the first terminal serial number of the ONU and the ONU-ID in response to the reception of the log-out message. ### Claim 10 (depends on 6) The OLT according to claim 6, wherein the first logic registration code is different from the first terminal serial number of the ONU. ### Claim 11 A method performed on an optical network unit (ONU), the method comprising: transmitting, by the ONU, a first terminal serial number of the ONU to an optical line terminal (OLT) when the ONU logs on; receiving, by the ONU, a request for a logic registration code from the OLT, when the central office determines that the first terminal serial number does not match a second terminal serial number; and in response to the request, transmitting, by the ONU, a first logic registration code to the OLT for authentication; receiving, by the ONU, a ONU identifier (ONU-ID), when the first logic registration code matches the second logic registration code. ### Claim 12 (depends on 11) The method according to claim 11, further comprising: receiving, by the ONU, a temporary ONU-ID from the OLT when the first terminal serial number does not match the second terminal serial number. ### Claim 13 (depends on 11) The method according to claim 11, wherein the logic registration code is different from the first terminal serial number of the ONU. ### Claim 14 (depends on 11) The method according to claim 11, wherein when the ONU logs on at a second time, the method further comprising: transmitting, by the ONU, the first terminal serial number of the ONU to the OLT without sending the logic registration code, wherein the first terminal serial number transmitted at the second time is used by the OLT to match a stored terminal serial number received from the ONU when the ONU logs on at a first time. ### Claim 15 An optical network unit (ONU) comprising: a memory, configured to store a terminal serial number and a logic registration code; a transmitter, configured to transmit a first terminal serial number to an optical line terminal (OLT) when the ONU logs on; and a second receiver, configured to receive a request for a logic registration code from the OLT, when the OLT determines that the first terminal serial number does not match a second terminal serial number stored on the OLT; wherein the transmitter is further configured to transmit a logic registration code to the OLT in response to the request for logical registration code; and wherein the second receiver is further configured to receive a ONU identifier (ONU-ID), when the first logic registration code matches the second logic registration code stored on the OLT. ### Claim 16 (depends on 15) The ONU according to claim 15, wherein the first logic registration code is different from the first terminal serial number of the ONU, and is different from the ONU-ID that is assigned by the OLT to the ONU. ### Claim 17 (depends on 15) The ONU according to claim 15, wherein when the ONU logs on at a second time, the transmitter is configured to transmit the first terminal serial number to the central office without sending the logic registration code, wherein the first terminal serial number transmitted at the second time is used by the central office to match a stored terminal serial number received from the ONU when the ONU logs on at the first time.