# US 2019/0357250 A1 · Service Transmission Method, Base Station, and Terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0357250 A1 - Document ID: US20190357250A1 - Status: Published application - Kind: A1 - Application number: 16/476,073 - Filed: 2017-01-06 - Published: 2019-11-21 - Earliest claimed: 2017-01-06 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Ning YANG; Hua XU - Web page: https://patentgrep.com/patent/US20190357250A1 ## CPC - H04W 52/0235: {where the received signal is a power saving command} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 48/12: using downlink control channel - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - 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) - 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 A service transmission method, a base station and a terminal are provided. The method includes: a base station sends a switch message of a narrow bandwidth receiving mode to a terminal, indicating the terminal to switch to a designated narrow bandwidth to receive information, wherein a width of the narrow bandwidth is smaller than a width of a system bandwidth; and when a pre-scheduled service needs to be transmitted, the base station schedules the terminal to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service. ## Claims ### Claim 1 A method for transmitting a service, comprising: sending, by a base station, to a terminal a switch message of a narrow bandwidth receiving mode, indicating the terminal to switch to a designated narrow bandwidth to receive information, wherein a width of the narrow bandwidth is smaller than a width of a system bandwidth; and scheduling, by the base station, the terminal to switch to the system bandwidth or a bandwidth occupied by a pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted. ### Claim 2 (depends on 1) The method of claim 1, wherein the method further comprises: sending downlink control information for the terminal in a physical downlink control channel on the narrow bandwidth, wherein the downlink control information is in a terminal-specific search space corresponding to the terminal, and uses a control channel element aggregation level corresponding to the terminal. ### Claim 3 (depends on 1) The method of claim 1, wherein the method further comprises: before sending, by the base station, the switch message of the narrow bandwidth receiving mode to the terminal, indicating the terminal to switch to the designated narrow bandwidth to receive information: sending to the terminal information relevant to the pre-scheduled service to the terminal, wherein the information relevant to the pre-scheduled service comprises at least one of: process identification information of the pre-scheduled service, periodic information of the pre-scheduled service, and information of a resource allocated by the base station for the pre-scheduled service. ### Claim 4 (depends on 3) The method of claim 3, wherein scheduling, by the base station, the terminal to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted, comprises: configuring, by the base station, information of a time interval during which the terminal is in the narrow bandwidth receiving mode and information of a time interval during which the terminal receives the pre-scheduled service, and sending to the terminal the information of the time interval during which the terminal is in the narrow bandwidth receiving mode and the information of the time interval during which the terminal receives the pre-scheduled service; and scheduling, according to the information of the time interval during which the terminal is in the narrow bandwidth receiving mode and the information of the time interval during which the terminal receives the pre-scheduled service, the terminal to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted. ### Claim 5 (canceled) ### Claim 6 (canceled) ### Claim 7 (depends on 1) The method of claim 1, wherein: when the bandwidth occupied by the pre-scheduled service is the system bandwidth, the base station schedules the terminal to switch to the system bandwidth to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; when the bandwidth occupied by the pre-scheduled service is part of the system bandwidth, the base station schedules the terminal to switch to the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; and when the bandwidth occupied by the pre-scheduled service is within the narrow bandwidth, when the pre-scheduled service needs to be transmitted, the base station schedules the terminal to switch to the bandwidth occupied by the pre-scheduled service in a physical downlink control channel of the narrow bandwidth to receive the pre-scheduled service, and indicates a modulation and coding scheme of the pre-scheduled service and a time-frequency domain resource occupied by the pre-scheduled service in downlink control information of the physical downlink control channel of the narrow bandwidth. ### Claim 8 A method for transmitting a service, comprising: receiving, by a terminal, a switch message of a narrow bandwidth receiving mode sent by a base station, and switching to a designated narrow bandwidth to receive information, wherein a width of the narrow bandwidth is smaller than a width of a system bandwidth; and switching, by the terminal, to the system bandwidth or a bandwidth occupied by a pre-scheduled service to receive the pre-scheduled service according to scheduling of the base station when the pre-scheduled service needs to be transmitted. ### Claim 9 (depends on 8) The method of claim 8, wherein the method further comprises: receiving downlink control information for the terminal in a physical downlink control channel on the narrow bandwidth, wherein the downlink control information is in a terminal-specific search space corresponding to the terminal, and uses a control channel element aggregation level corresponding to the terminal. ### Claim 10 (depends on 8) The method of claim 8, wherein the method further comprises: before receiving, by the terminal, the switch message of the narrow bandwidth receiving mode sent by the base station, and switching to the designated narrow bandwidth to receive information: receiving information relevant to the pre-scheduled service sent by the base station, wherein the information relevant to the pre-scheduled service comprises process identification information of the pre-scheduled service, periodic information of the pre-scheduled service and information of a resource allocated by the base station for the pre-scheduled service. ### Claim 11 (depends on 10) The method of claim 10, wherein switching, by the terminal, to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service according to the scheduling of the base station when the pre-scheduled service needs to be transmitted comprises: receiving information of a time interval during which the terminal is in the narrow bandwidth receiving mode and information of a time interval during which the terminal receives the pre-scheduled service, sent by the base station; and switching to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service according to the information of the time interval during which the terminal is in the narrow bandwidth receiving mode and the information of the time interval during which the terminal receives the pre-scheduled service when the pre-scheduled service needs to be transmitted. ### Claim 12 (canceled) ### Claim 13 (canceled) ### Claim 14 (depends on 8) The method of claim 8, wherein when the bandwidth occupied by the pre-scheduled service is the system bandwidth, the terminal switches to the system bandwidth to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; when the bandwidth occupied by the pre-scheduled service is part of the system bandwidth, the terminal switches to the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; and when the bandwidth occupied by the pre-scheduled service is within the narrow bandwidth, when the pre-scheduled service needs to be transmitted, the terminal switches to the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service, and receives a modulation and coding scheme of the pre-scheduled service and a time-frequency domain resource occupied by the pre-scheduled service sent by the base station in downlink control information of a physical downlink control channel of the narrow bandwidth. ### Claim at position 15 15-21. (canceled) ### Claim 22 A base station, comprising: a processor, a storage, a transceiver and a bus, wherein the processor, the storage and the transceiver are connected through the bus, the transceiver is used for receiving and transmitting signals to communicate with a terminal, the storage is used for storing a set of program codes, and the processor is used for calling the set of the program codes stored in the storage to perform following operations: sending a switch message of a narrow bandwidth receiving mode to a terminal through the transceiver, indicating the terminal to switch to a designated narrow bandwidth to receive information, wherein a width of the narrow bandwidth is smaller than a width of a system bandwidth; and scheduling the terminal to switch to the system bandwidth or a bandwidth occupied by a pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted. ### Claim 23 (depends on 22) The base station of claim 22, wherein the processor is further used for sending downlink control information for the terminal through the transceiver in a physical downlink control channel on the narrow bandwidth; and the downlink control information is in a terminal-specific search space corresponding to the terminal, and uses a control channel element aggregation level corresponding to the terminal. ### Claim 24 (depends on 22) The base station of claim 22, wherein the processor is further used for sending information relevant to the pre-scheduled service to the terminal through the transceiver before sending the switch message of the narrow bandwidth receiving mode to the terminal through the transceiver, indicating the terminal to switch to the designated narrow bandwidth to receive information, wherein the information relevant to the pre-scheduled service comprises process identification information of the pre-scheduled service, periodic information of the pre-scheduled service, and information of a resource allocated by the base station for the pre-scheduled service. ### Claim 25 (depends on 24) The base station of claim 24, wherein the processor is specifically used for: configuring information of a time interval during which the terminal is in the narrow bandwidth receiving mode and information of a time interval during which the terminal receives the pre-scheduled service, and sending the information of the time interval during which the terminal is in the narrow bandwidth receiving mode and the information of the time interval during which the terminal receives the pre-scheduled service to the terminal; and scheduling the terminal to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service according to the information of the time interval during which the terminal is in the narrow bandwidth receiving mode and the information of the time interval during which the terminal receives the pre-scheduled service when the pre-scheduled service needs to be transmitted. ### Claim 26 (depends on 24) The base station of claim 24, wherein the processor is specifically used for: configuring, according to the periodic information of the pre-scheduled service, the terminal that is in the narrow bandwidth receiving mode to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service according to a time interval to receive the pre-scheduled service. ### Claim 27 (depends on 24) The base station of claim 24, wherein the processor is specifically used for: sending a process identification of the pre-scheduled service and first time information of when the terminal switches to the system bandwidth or the bandwidth occupied by the pre-scheduled service, in downlink control information of a physical downlink control channel of the narrow bandwidth, wherein the downlink control information is used for triggering the terminal to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service; sending second time information of when the terminal returns to the narrow bandwidth receiving mode, in the downlink control information, or transmitting a trigger signal for triggering the terminal to return to the narrow bandwidth receiving mode in a preset area of a physical downlink control channel of the system bandwidth; and scheduling the terminal to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service according to the first time information and the second time information, or according to the first time information and the trigger signal. ### Claim 28 (depends on 22) The base station of claim 22, wherein the processor is specifically used for: when the bandwidth occupied by the pre-scheduled service is the system bandwidth, scheduling the terminal to switch to the system bandwidth to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; when the bandwidth occupied by the pre-scheduled service is part of the system bandwidth, scheduling the terminal to switch to the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; and when the bandwidth occupied by the pre-scheduled service is within the narrow bandwidth, scheduling the terminal to switch to the bandwidth occupied by the pre-scheduled service in a physical downlink control channel of the narrow bandwidth to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted, and indicating a modulation and coding scheme of the pre-scheduled service and a time-frequency domain resource occupied by the pre-scheduled service in downlink control information of the physical downlink control channel of the narrow bandwidth. ### Claim at position 23 29-35. (canceled) ### Claim 36 A terminal, comprising: a processor, a storage, a transmitter, a receiver and a bus, wherein the processor, the storage, the transmitter and the receiver are connected through the bus, wherein the transmitter is used for transmitting signals, the receiver is used for receiving signals, the transmitter and the receiver are independently configured respectively or integrated, the storage is used for storing a set of program codes, and the processor is used for calling the set of the program codes stored in the storage to perform following operations: receiving a switch message of a narrow bandwidth receiving mode sent by a base station through the receiver, and switching to a designated narrow bandwidth to receive information, wherein a width of the narrow bandwidth is smaller than a width of a system bandwidth; and switching to the system bandwidth or a bandwidth occupied by a pre-scheduled service to receive the pre-scheduled service according to scheduling of the base station when the pre-scheduled service needs to be transmitted. ### Claim 37 (depends on 36) The terminal of claim 36, wherein the processor is further used for receiving downlink control information for the terminal through the receiver in a physical downlink control channel on the narrow bandwidth; and the downlink control information is in a terminal-specific search space corresponding to the terminal, and uses a control channel element aggregation level corresponding to the terminal. ### Claim 38 (depends on 36) The terminal of claim 36, wherein the processor is further used for receiving information relevant to the pre-scheduled service sent by the base station through the receiver before receiving the switch message of the narrow bandwidth receiving mode sent by the base station through the receiver and switching to the designated narrow bandwidth to receive information, wherein the information relevant to the pre-scheduled service includes process identification information of the pre-scheduled service, periodic information of the pre-scheduled service, and information of a resource allocated by the base station for the pre-scheduled service. ### Claim 39 (depends on 38) The terminal of claim 38, wherein the processor is specifically used for receiving information of a time interval during which the terminal is in the narrow bandwidth receiving mode and information of a time interval during which the terminal receives the pre-scheduled service sent by the base station through the receiver; and switching to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service according to the information of the time interval during which the terminal is in the narrow bandwidth receiving mode and the information of the time interval during which the terminal receives the pre-scheduled service when the pre-scheduled service needs to be transmitted. ### Claim 40 (depends on 38) The terminal of claim 38, wherein the processor is specifically used for: receiving through the receiver a time interval configured by the base station according to the periodic information of the pre-scheduled service, and switching to the system bandwidth or the bandwidth occupied by the pre-scheduled service according to the time interval to receive the pre-scheduled service. ### Claim 41 (depends on 38) The terminal of claim 38, wherein the processor is specifically used for: receiving, through the receiver, a process identification of the pre-scheduled service and first time information indicating when the terminal switches to the system bandwidth or the bandwidth occupied by the pre-scheduled service, sent by the base station in downlink control information of a physical downlink control channel of the narrow bandwidth, wherein the downlink control information is used for triggering the terminal to switch to the system bandwidth or the bandwidth occupied by the pre-scheduled service; receiving, through the receiver, second time information indicating when the terminal returns to the narrow bandwidth receiving mode, sent by the base station through the downlink control information, or detecting a trigger signal for triggering the terminal to return to the narrow bandwidth receiving mode in a preset area of a physical downlink control channel of the system bandwidth; and switching to the system bandwidth or the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service according to the first time information and the second time information or according to the first time information and the trigger signal. ### Claim 42 (depends on 36) The terminal of claim 36, wherein when the bandwidth occupied by the pre-scheduled service is the system bandwidth, the processor is specifically used for switching to the system bandwidth to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; when the bandwidth occupied by the pre-scheduled service is part of the system bandwidth, the processor is specifically used for switching to the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted; and when the bandwidth occupied by the pre-scheduled service is within the narrow bandwidth, the processor is specifically used for switching to the bandwidth occupied by the pre-scheduled service to receive the pre-scheduled service when the pre-scheduled service needs to be transmitted, and receiving a modulation and coding scheme of the pre-scheduled service and a time-frequency domain resource occupied by the pre-scheduled service sent by the base station through the receiver in downlink control information of a physical downlink control channel of the narrow bandwidth.