# US 11,121,838 B2 · Method, terminal device, and network device for reporting port information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,121,838 B2 - Document ID: US11121838B2 - Status: Granted - Kind: B2 - Application number: 16/674,310 - Filed: 2019-11-05 - Published: 2020-03-05 - Granted: 2021-09-14 - Earliest claimed: 2017-05-05 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yu Sun; Yi Qin; Zhongfeng Li - Web page: https://patentgrep.com/patent/US11121838B2 ## 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)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 8/24: Transfer of terminal data - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract This application provides a method for reporting port information, a terminal device, and a network device. The method includes: determining, by a terminal device, an uplink signal, where the uplink signal includes information about a phase tracking reference signal (PTRS) port of the terminal device, or the uplink signal includes information about the PTRS port and information about a demodulation reference signal (DMRS) port, or the uplink signal includes a correspondence between the PTRS port and the DMRS port; and sending, by the terminal device, the uplink signal to a network device. In embodiments of this application, the terminal device reports the uplink signal to the network device, so that the network device does not need to configure different PTRS ports for DMRS ports, to avoid configuring excessive PTRS ports, thereby saving PTRS port resources. ## Claims ### Claim 1 A method for reporting port information, comprising: determining, by a terminal device, an uplink signal, wherein: the uplink signal comprises at least one of information about a phase tracking reference signal (PTRS) port of the terminal device, information about the PTRS port and information about a demodulation reference signal (DMRS) port, or a correspondence between the PTRS port and the DMRS port; and sending, by the terminal device, the uplink signal to a network device, wherein the uplink signal comprises the information about the PTRS port of the terminal device, and the information about the PTRS port is a maximum quantity of PTRS ports required by the terminal device. ### Claim 2 (depends on 1) The method according to claim 1, wherein: the uplink signal comprises the information about the PTRS port and the information about the DMRS port, the information about the PTRS port is a quantity of PTRS ports, and the information about the DMRS port is a quantity of DMRS ports corresponding to the PTRS port. ### Claim 3 (depends on 2) The method according to claim 2, wherein the correspondence is determined by the network device based on the uplink signal. ### Claim 4 (depends on 2) The method according to claim 2, further comprising: sending, by the terminal device, a PTRS to the network device, wherein the PTRS is used by the network device to update the correspondence between the PTRS port and the DMRS port; and receiving, by the terminal device, the updated correspondence between the PTRS port and the DMRS port that is sent by the network device. ### Claim 5 (depends on 1) The method according to claim 1, wherein: the uplink signal comprises the correspondence between the PTRS port and the DMRS port, and the uplink signal further comprises grouping information of the DMRS port of the terminal device; and the correspondence is a correspondence between the PTRS port and a DMRS port group. ### Claim 6 (depends on 5) The method according to claim 5, wherein: the grouping information comprises a group number of each DMRS port group and a port number of a DMRS port comprised in each DMRS port group; and the correspondence is a correspondence between the PTRS port and the group number of the DMRS port group. ### Claim 7 A method for reporting port information, comprising receiving, by a network device, an uplink signal from a terminal device, wherein: the uplink signal comprises at least one of information about a phase tracking reference signal (PTRS) port of the terminal device, information about the PTRS port and information about a demodulation reference signal (DMRS) port, or a correspondence between the PTRS port and the DMRS port, wherein the uplink signal comprises the information about the PTRS port of the terminal device, and the information about the PTRS port is a maximum quantity of PTRS ports required by the terminal device. ### Claim 8 (depends on 7) The method according to claim 7, wherein: the uplink signal comprises the information about the PTRS port and the information about the DMRS port, the information about the PTRS port is a quantity of PTRS ports, and the information about the DMRS port corresponding to the PTRS port is a quantity of DMRS ports corresponding to the PTRS port. ### Claim 9 (depends on 8) The method according to claim 8, further comprising: determining, by the network device, the correspondence between the PTRS port and the DMRS port based on the uplink signal; and. ### Claim 10 (depends on 8) The method according to claim 8, further comprising: receiving, by the network device, a PTRS sent by the terminal device; updating, by the network device, the correspondence between the PTRS port and the DMRS port based on the PTRS; and sending, by the network device, the updated correspondence between the PTRS port and the DMRS port to the terminal device. ### Claim 11 (depends on 7) The method according to claim 7, wherein: the uplink signal comprises the correspondence between the PTRS port and the DMRS port, and the uplink signal further comprises grouping information of the DMRS port of the terminal device; and the correspondence is a correspondence between the PTRS port and a DMRS port group. ### Claim 12 (depends on 11) The method according to claim 11, wherein: the grouping information comprises a group number of each DMRS port group and a port number of a DMRS port comprised in each DMRS port group; and the correspondence is a correspondence between the PTRS port and the group number of the DMRS port group. ### Claim 13 A terminal device, comprising: a processor configured to determine an uplink signal, wherein: the uplink signal comprises at least one of information about a phase tracking reference signal (PTRS) port of the terminal device, information about the PTRS port and information about a demodulation reference signal (DMRS) port, or a correspondence between the PTRS port and the DMRS port; and a transmitter configured to send the uplink signal to a network device, wherein the uplink signal comprises the information about the PTRS port of the terminal device, and the information about the PTRS port is a maximum quantity of PTRS ports required by the terminal device. ### Claim 14 (depends on 13) The terminal device according to claim 13, wherein: the uplink signal comprises the information about the PTRS port and the information about the DMRS port, the information about the PTRS port is a quantity of PTRS ports, and the information about the DMRS port is a quantity of DMRS ports corresponding to the PTRS port. ### Claim 15 (depends on 13) The terminal device according to claim 13, wherein: the uplink signal comprises the correspondence between the PTRS port and the DMRS port, and the uplink signal further comprises grouping information of the DMRS port of the terminal device; and the correspondence is a correspondence between the PTRS port and a DMRS port group. ### Claim 16 (depends on 15) The terminal device according to claim 15, wherein: the grouping information comprises a group number of each DMRS port group and a port number of a DMRS port comprised in each DMRS port group; and the correspondence is a correspondence between the PTRS port and the group number of the DMRS port group. ### Claim 17 A network device comprising a receiver configured to receive an uplink signal from a terminal device, wherein: the uplink signal comprises at least one of information about a phase tracking reference signal (PTRS) port of the terminal device, information about the PTRS port and information about a demodulation reference signal (DMRS) port, or a correspondence between the PTRS port and the DMRS port, wherein the uplink signal comprises the information about the PTRS port of the terminal device, and the information about the PTRS port is a maximum quantity of PTRS ports required by the terminal device. ### Claim 18 (depends on 17) The network device according to claim 17, wherein: the uplink signal comprises the information about the PTRS port and the information about the DMRS port, the information about the PTRS port is a quantity of PTRS ports, and the information about the DMRS port corresponding to the PTRS port is a quantity of DMRS ports corresponding to the PTRS port. ### Claim 19 (depends on 17) The network device according to claim 17, wherein: the uplink signal comprises the correspondence between the PTRS port and the DMRS port, and the uplink signal further comprises grouping information of the DMRS port of the terminal device; and the correspondence is a correspondence between the PTRS port and a DMRS port group. ### Claim 20 (depends on 19) The network device according to claim 19, wherein: the grouping information comprises a group number of each DMRS port group and a port number of a DMRS port comprised in each DMRS port group; and the correspondence is a correspondence between the PTRS port and the group number of the DMRS port group.