# US 11,445,383 B2 · Information feedback method, device and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,383 B2 - Document ID: US11445383B2 - Status: Granted - Kind: B2 - Application number: 16/207,054 - Filed: 2018-11-30 - Published: 2019-04-18 - Granted: 2022-09-13 - Earliest claimed: 2016-05-31 - Assignees: Zte Corporation - Applicants: ZTE Corporation - Inventors: Shujuan Zhang; Zhaohua Lu; Yuhong Gong; Hao Wu - Web page: https://patentgrep.com/patent/US11445383B2 ## CPC - H04B 7/0417: Feedback systems - H04B 7/06964: {Re-selection of one or more beams after beam failure} - H04B 7/0617: {for beam forming} - H04L 1/1825: Adaptation of specific ARQ protocol parameters according to transmission conditions - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04W 24/02: Arrangements for optimising operational condition - H04W 36/06: Reselecting a communication resource in the serving access point - H04W 36/305: {Handover due to radio link failure (control signalling for hand-off failure H04W36/0079)} - H04W 76/19: Connection re-establishment - H04B: TRANSMISSION - 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 An information feedback method, device and system are provided. The method includes: determining, by a first communication node, feedback information for indicating a status of communication links between the first communication node and a serving communication node, where the feedback information includes at least one of the following: failure information of a first type of transmission link, a request for training signal of transmission modes and/or a request for training signal of receiving modes, and indication information of M preferred transmission links, and the first type of transmission link and the M preferred transmission links include transmission links from the serving communication node to the first communication node, where M is a positive integer greater than or equal to 1; and transmitting, by the first communication node, the feedback information to the serving communication node. The present disclosure solves the problem in the existing art of a low resource utilization rate because a receiving end and a transmitting end cannot learn a communication link failure in time, enables the receiving end and the transmitting end to learn a status of communication links between them in time, and effectively improves the resource utilization rate. ## Claims ### Claim 1 A wireless communication method, comprising: determining, by a first communication node, that N1 failures on a first type of transmission links for the first communication node, wherein N1 is predetermined between the first communication node and a serving communication node, wherein each failure has occurred due to link performances of all transmission links of the first type are lower than a first predetermined threshold; transmitting, by the first communication node, in response to the N1 failures, feedback information to the serving communication node, wherein the feedback information indicates that the first type of transmission links has failed, and wherein the feedback information further includes an index indicating a transmission link, and wherein a link performance of the transmission link is higher than a second predetermined threshold; monitoring, by the first communication node, acknowledgement information from the serving communication node in response to the feedback information; and monitoring, by the first communication node after a predefined period of time after receiving the acknowledgment information, a control channel according to the transmission link indicated by the index. ### Claim 2 (depends on 1) The method of claim 1, wherein the N1 failures are determined according to a signal transmitted by the serving communication node. ### Claim 3 (depends on 1) The method of claim 1, further comprising: adjusting, by the first communication node, a communication link between the first communication node and the serving communication node according to the index indicating the transmission link. ### Claim 4 (depends on 3) The method of claim 3, wherein the communication link includes a channel carrying the acknowledgment information. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving, by the first communication node, a signaling message from the serving communication node indicating information about a control channel resource, wherein the information for the control channel resource comprises transmission link information associated with the control channel resource. ### Claim 6 A wireless communication method, comprising: receiving, by a serving communication node, feedback information from a first communication node in response to N1 failures on a first type of transmission links for the terminal, wherein N1 is predetermined between the first communication node and the serving communication node, wherein each failure has occurred due to link performances of all transmission links of the first type are lower than a first predetermined threshold, wherein the feedback information indicates that the first type of transmission links has failed, and the feedback information further includes an index indicating a transmission link, and wherein a link performance of the transmission link is higher than a second predetermined threshold; transmitting, by the serving communication node, acknowledge information to the first communication node in response to the feedback information; and transmitting, by the serving communication node after a predetermined period of time, information to the first communication node over a control channel according to the transmission link indicated by the index. ### Claim 7 (depends on 6) The method of claim 6, comprising: transmitting, by the serving communication node, a signaling message to the first communication node indicating information for a control channel resource, wherein the information for the control channel resource comprises transmission link information associated with the control channel resource. ### Claim 8 A wireless communication device, comprising a processor configured to: determine that N1 failures on a first type of transmission links for the device, wherein N1 is predetermined between the device and a serving communication node, wherein each failure has occurred due to link performances of all transmission links of the first type are lower than a first predetermined threshold, transmit feedback information to the serving communication node in response to the N1 failures, wherein the feedback information indicates that the first type of transmission links has failed, and wherein the feedback information further includes an index indicating a transmission link, and wherein a link performances of the transmission link is higher than a second predetermined threshold; monitor acknowledgement information from the serving communication node in response to the feedback information; and monitor, after a predefined period of time after receiving the acknowledgment information, a control channel according to the transmission link indicated by the index. ### Claim 9 (depends on 8) The device of claim 8, wherein the processor is configured to determine the N1 failures according to a signal transmitted by the serving communication node. ### Claim 10 (depends on 8) The device of claim 8, wherein the processor is configured to adjust a communication link between the serving communication node and the device according to the index indicating the transmission link. ### Claim 11 (depends on 10) The device of claim 10, wherein the communication link includes a channel carrying the acknowledgment information. ### Claim 12 (depends on 8) The device of claim 8, wherein the processor is configured to: receive a signaling message from the serving communication node indicating information about a control channel resource, wherein the information for the control channel resource comprises transmission link information associated with the control channel resource. ### Claim 13 A wireless communication device, comprising a processor configured to: receive feedback information from a first communication node in response to N1 failures on a first type of transmission links for the device, wherein N1 is predetermined between the first communication node and the device, wherein each failure has occurred due to link performances of all transmission links of the first type are lower than a first predetermined threshold, wherein the feedback information indicates that the first type of transmission links has failed, and the feedback information further includes an index indicating a transmission link, and wherein a link performance of the transmission link is higher than a second predetermined threshold; transmit acknowledge information to the first communication node in response to the feedback information; and transmit, after a predetermined period of time, information to the first communication node over a control channel according to the transmission link indicated by the index. ### Claim 14 (depends on 13) The device of claim 13, wherein the processor is configured to: transmit a signaling message to the first communication node indicating information for a control channel resource, wherein the information for the control channel resource comprises transmission link information associated with the control channel resource.