# US 12,010,556 B2 · Network device transmission bandwidth reduction method and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,556 B2 - Document ID: US12010556B2 - Status: Granted - Kind: B2 - Application number: 17/439,100 - Filed: 2020-03-23 - Published: 2022-05-12 - Granted: 2024-06-11 - Earliest claimed: 2019-03-21 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Ding Wang; Liwei Cui; Jian Wang; Haibo Xu - Web page: https://patentgrep.com/patent/US12010556B2 ## CPC - H04W 28/20: Negotiating bandwidth - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/20: Control channels or signalling for resource management - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 52/0225: {using monitoring of external events, e.g. the presence of a signal} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract This application relates to a network device transmission bandwidth reduction method and related device for reducing a transmission bandwidth of a network device, thereby reducing power consumption and battery life of terminal devices. In one embodiment, a terminal receives transmission bandwidth reduction configuration information sent by a network device, where the transmission bandwidth reduction configuration information includes a set of transmission bandwidth reduction parameters supported by the network device. In response, the terminal sends a target transmission bandwidth reduction coefficient to the network device, where the target transmission bandwidth reduction coefficient is a transmission bandwidth reduction coefficient of a serving cell expected by the terminal. A serving cell is one or more cells that currently provide services for the terminal. In this way, the network device reduces a transmission bandwidth of the serving cell based on the target transmission bandwidth reduction coefficient reported by the terminal. ## Claims ### Claim 1 A network device transmission bandwidth reduction method, comprising: receiving, by a terminal, transmission bandwidth reduction configuration information sent by a network device, wherein the transmission bandwidth reduction configuration information comprises a set of transmission bandwidth reduction parameters supported by the network device; and sending a target transmission bandwidth reduction coefficient to the network device, wherein the target transmission bandwidth reduction coefficient is a transmission bandwidth reduction coefficient that is of a serving cell and is expected by the terminal, and the serving cell comprises one or more cells that currently provide services for the terminal; wherein the target transmission bandwidth reduction coefficient comprises at least one of the following: transmission bandwidth reduction coefficients respectively corresponding to the serving cell, wherein the serving cell comprises cells that provide services for the terminal; or a transmission bandwidth reduction coefficient jointly corresponding to the serving cell, wherein the serving cell comprises cells that provide services for the terminal; or a transmission bandwidth reduction coefficient corresponding to a total bandwidth of the serving cell, wherein the serving cell comprises cells that provide services for the terminal. ### Claim 2 (depends on 1) The method according to claim 1, wherein the receiving, by a terminal, transmission bandwidth reduction configuration information sent by a network device comprises: receiving, by the terminal, the transmission bandwidth reduction configuration information sent by the network device by using a radio resource control reconfiguration message; and the sending a target transmission bandwidth reduction coefficient to the network device comprises: sending the target transmission bandwidth reduction coefficient to the network device by using a terminal assistance information message; or sending the target transmission bandwidth reduction coefficient to the network device by using a media access control (MAC) control element. ### Claim 3 (depends on 1) The method according to claim 1, wherein the transmission bandwidth reduction configuration information comprises a minimum time interval for continuously sending the target transmission bandwidth reduction coefficient. ### Claim 4 (depends on 3) The method according to claim 3, wherein the transmission bandwidth reduction configuration information further comprises a set of transmission bandwidth reduction coefficients supported by the network device. ### Claim 5 A network device transmission bandwidth reduction method, comprising: sending, by a network device, transmission bandwidth reduction configuration information to a terminal, wherein the transmission bandwidth reduction configuration information comprises a set of transmission bandwidth reduction parameters supported by the network device; receiving a target transmission bandwidth reduction coefficient sent by the terminal, wherein the target transmission bandwidth reduction coefficient is a transmission bandwidth reduction coefficient that is of a serving cell and is expected by the terminal, and the serving cell comprises cells that currently provide services for the terminal; and reducing, by the network device, a transmission bandwidth of the serving cell based on the target transmission bandwidth reduction coefficient; wherein the target transmission bandwidth reduction coefficient comprises at least one of the following: transmission bandwidth reduction coefficients respectively corresponding to the serving cell that provide the services for the terminal; or a transmission bandwidth reduction coefficient jointly corresponding to the serving cells that provide the services for the terminal; or a transmission bandwidth reduction coefficient corresponding to a total bandwidth of the serving cells that provide the services for the terminal. ### Claim 6 (depends on 5) The method according to claim 5, wherein the sending, by a network device, transmission bandwidth reduction configuration information to a terminal comprises: sending, by the network device, the transmission bandwidth reduction configuration information to the terminal by using a radio resource control reconfiguration message; and the receiving a target transmission bandwidth reduction coefficient sent by the terminal comprises: receiving, by the network device, the target transmission bandwidth reduction coefficient sent by the terminal by using a terminal assistance information message; or receiving, by the network device, the target transmission bandwidth reduction coefficient sent by the terminal by using a media access control (MAC) control element. ### Claim 7 (depends on 5) The method according to claim 5, wherein the transmission bandwidth reduction configuration information comprises a minimum time interval for continuously sending the target transmission bandwidth reduction coefficient. ### Claim 8 (depends on 7) The method according to claim 7, wherein the transmission bandwidth reduction configuration information further comprises a set of transmission bandwidth reduction coefficients supported by the network device. ### Claim 9 A terminal, comprising a processor and a memory, wherein; the memory is configured to store a program instruction; and the processor is configured to invoke the program instruction in the memory to perform: receiving transmission bandwidth reduction configuration information sent by a network device, wherein the transmission bandwidth reduction configuration information comprises a set of transmission bandwidth reduction parameters supported by the network device; and sending a target transmission bandwidth reduction coefficient to the network device, wherein the target transmission bandwidth reduction coefficient is a transmission bandwidth reduction coefficient that is of a serving cell and that is expected by the terminal, and the serving cell comprises one or more cells that currently provide services for the terminal; wherein the target transmission bandwidth reduction coefficient comprises at least one of the following: transmission bandwidth reduction coefficients respectively corresponding to the serving cell, wherein the serving cell comprises one or more cells that provide services for the terminal; or a transmission bandwidth reduction coefficient jointly corresponding to the serving cell, wherein the serving cell comprises one or more cells that provide services for the terminal; or a transmission bandwidth reduction coefficient corresponding to a total bandwidth of the serving cell, wherein the serving cell comprises one or more cells that provide services for the terminal. ### Claim 10 (depends on 9) The terminal according to claim 9, wherein the receiving transmission bandwidth reduction configuration information sent by a network device comprises: receiving the transmission bandwidth reduction configuration information sent by the network device by using a radio resource control reconfiguration message; and the sending a target transmission bandwidth reduction coefficient to the network device comprises: sending the target transmission bandwidth reduction coefficient to the network device by using a terminal assistance information message; or sending, by the terminal, the target transmission bandwidth reduction coefficient to the network device by using a media access control (MAC) control element. ### Claim 11 (depends on 9) The terminal according to claim 9, wherein the transmission bandwidth reduction configuration information comprises a minimum time interval for continuously sending the target transmission bandwidth reduction coefficient. ### Claim 12 (depends on 9) The terminal according to claim 9, wherein the transmission bandwidth reduction configuration information further comprises a set of transmission bandwidth reduction coefficients supported by the network device.