Abstract: A receiving method based on multiple frequency-shift keying (M-FSK) modulation. The method comprises performing M-FSK demodulation on a frame structure comprising a preamble frame, a SYNC frame, and a data frame. The performing comprises: performing the M-FSK demodulation of the preamble frame using an autocorrelation time-frequency synchronization technology; performing the M-FSK demodulation of the preamble frame using a time-frequency synchronization technology using cross-correlation sliding fast Fourier transform (FFT); and performing the M-FSK demodulation of at least one of the SYNC frame or the data frame using an M-FSK data demodulation technology using adaptive and scalable FFT.

Abstract: A cell camping method and a terminal device selects a first cell having a quality of service reference value highest among cells found by the terminal device for current camping. When a quality of service reference value of the first cell is less than a first threshold, the terminal device sends a first measuring report or determines not to send a second measuring report such that the terminal device avoids performing cell handover.

Abstract: A receiving method based on multiple frequency-shift keying (M-FSK) modulation. The method comprises performing M-FSK demodulation on a frame structure comprising a preamble frame, a SYNC frame, and a data frame. The performing comprises: performing the M-FSK demodulation of the preamble frame using an autocorrelation time-frequency synchronization technology; performing the M-FSK demodulation of the preamble frame using a time-frequency synchronization technology using cross-correlation sliding fast Fourier transform (FFT); and performing the M-FSK demodulation of at least one of the SYNC frame or the data frame using an M-FSK data demodulation technology using adaptive and scalable FFT.

Abstract: A terminal supporting dual receive single transmit-dual subscriber identity module (SIM) dual standby (DR-DSDS) includes a first SIM card interface and a second SIM card interface. The first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. The terminal is configured to, when the terminal is in a first communication connection, receive a paging request for establishing a second communication connection, and when the paging request carries a first identifier indicating a second service, respond to the paging request to establish the second communication connection.

Abstract: A communications method includes receiving, by user equipment (UE), a first message from a network side, where the first message is used to indicate to the UE to perform circuit switched fallback (CSFB) as a called party, where the first message includes first information, and where the first information is used to indicate an incoming call number. If it is determined that a preset condition is met, the communications method further includes sending a second message to the network side, where the second message is used to indicate that the CSFB is rejected, and where the preset condition includes at least one of the incoming call number is restricted or the UE is in a mode of automatically rejecting a CSFB incoming call.

Abstract: Embodiments of this application provide methods, apparatuses, and terminal devices for managing communications services. In an implementation, a method comprises: identifying, by an input device of a terminal device, an operation performed on the terminal device for entering a service mode that prioritizes data services over voice services; sending, by a subscriber identification module (SIM) card of the terminal device, one or more instructions to a network server, wherein the one or more instructions instruct the network server to disable the voice services of the SIM card; and in response to identifying the operation, activating, by the SIM card, the service mode by disabling a function on the terminal device corresponding to the voice services.

Abstract: A terminal supporting dual receive single transmit-dual subscriber identity module (SIM) dual standby (DR-DSDS) includes a first SIM card interface and a second SIM card interface, and the first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. The terminal is configured to, when the terminal is in a first communication connection, receive a paging request for establishing a second communication connection, and when the paging request carries a first identifier indicating a second service, respond to the paging request to establish the second communication connection.

Abstract: A terminal supporting dual receive single transmit-dual subscriber identity module (SIM) dual standby (DR-DSDS) includes a first SIM card interface and a second SIM card interface. The first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. The terminal is configured to, when the terminal is in a first communication connection, receive a paging request for establishing a second communication connection, and when the paging request carries a first identifier indicating a second service, respond to the paging request to establish the second communication connection.

Abstract: A no-gap measurement capability reporting method includes receiving, by a first device, a first message from a second device, where the first message instructs the first device to determine a gap measurement; and sending, by the first device, a second message to the second device based on the first message, where the second message indicates a no-gap measurement capability.

Abstract: A terminal device reports a measurement capability to a network side, and the network side determines, based on the capability of the terminal device and a trigger condition, whether a measurement gap needs to be allocated to the terminal device, where the measurement gap is used by the terminal device to measure an inter-frequency or inter-RAT cell. When the network side allocates the measurement gap to the terminal device, and when the terminal device determines that an objective of not allocating a gap can be achieved by de-configuring a secondary cell or reducing a data receiving rule of a currently camped-on cell. When an inter-frequency or inter-RAT cell is measured by de-configuring the secondary cell or reducing the data receiving rule of the currently camped-on cell, a cell measurement task can be completed.

Abstract: A terminal supporting dual-receive single-transmit dual-card dual-standby single-pass includes a first subscriber identity module (SIM) card interface and a second SIM card interface. The first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. When the terminal is in a first communications connection, the terminal receives a paging request for setting up a second communications connection. When the terminal receives the paging request for the second communications connection, if the terminal has a to-be-sent voice packet of the first communications connection, the terminal delays responding to the paging request for setting up the second communications connection, or if the terminal has no to-be-sent voice packet of the first communications connection, the terminal responds to the paging request for setting up the second communications connection.

Abstract: A cell camping method and a terminal device selects a first cell having a quality of service reference value highest among cells found by the terminal device for current camping. When a quality of service reference value of the first cell is less than a first threshold, the terminal device sends a first measuring report or determines not to send a second measuring report such that the terminal device avoids performing cell handover.

Abstract: A measurement method includes sending, by a first device to a second device, a message including a first configuration, wherein the first configuration indicates that a first event triggers the second device to send a first measurement message. The first event includes at least a channel quality of a measurement object is less than a first threshold, the channel quality of the measurement object is lower than a channel quality of a serving cell of the second device, the channel quality of the measurement object is less than the first threshold, and the channel quality of the serving cell of the second device is greater than a second threshold, or the channel quality of the measurement object is lower than the channel quality of the serving cell of the second device and the channel quality of the serving cell of the second device is greater than the second threshold.

Abstract: A communications method includes receiving, by user equipment (UE), a first message from a network side, where the first message is used to indicate to the UE to perform circuit switched fallback (CSFB) as a called party, where the first message includes first information, and where the first information is used to indicate an incoming call number. If it is determined that a preset condition is met, the communications method further includes sending a second message to the network side, where the second message is used to indicate that the CSFB is rejected, and where the preset condition includes at least one of the incoming call number is restricted or the UE is in a mode of automatically rejecting a CSFB incoming call.

Abstract: A terminal supporting dual receive single transmit dual card dual standby single pass DR-DSDS includes a first SIM card interface and a second SIM card interface. The first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. A method includes, when the terminal is in a first communications connection, receiving a paging request for setting up a second communications connection. The method further includes, when the terminal receives the paging request for the second communications connection, if the terminal has a to-be-sent voice packet of the first communications connection, delaying, by the terminal, responding to the paging request for setting up the second communications connection, or if the terminal has no to-be-sent voice packet of the first communications connection, responding to the paging request for setting up the second communications connection.

Abstract: A terminal supporting dual-receive single-transmit dual-card dual-standby single-pass includes a first subscriber identity module (SIM) card interface and a second SIM card interface. The first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. When the terminal is in a first communications connection, the terminal receives a paging request for setting up a second communications connection. When the terminal receives the paging request for the second communications connection, if the terminal has a to-be-sent voice packet of the first communications connection, the terminal delays responding to the paging request for setting up the second communications connection, or if the terminal has no to-be-sent voice packet of the first communications connection, the terminal responds to the paging request for setting up the second communications connection.

Abstract: A terminal supporting dual receive single transmit-dual subscriber identity module (SIM) dual standby (DR-DSDS) includes a first SIM card interface and a second SIM card interface, and the first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. The terminal is configured to, when the terminal is in a first communication connection, receive a paging request for establishing a second communication connection, and when the paging request carries a first identifier indicating a second service, respond to the paging request to establish the second communication connection.

Abstract: Embodiments of this application provide methods, apparatuses, and terminal devices for managing communications services. In an implementation, a method comprises: identifying, by an input device of a terminal device, an operation performed on the terminal device for entering a service mode that prioritizes data services over voice services; sending, by a subscriber identification module (SIM) card of the terminal device, one or more instructions to a network server, wherein the one or more instructions instruct the network server to disable the voice services of the SIM card; and in response to identifying the operation, activating, by the SIM card, the service mode by disabling a function on the terminal device corresponding to the voice services.

Abstract: A terminal supporting dual receive single transmit-dual SIM dual standby DR-DSDS includes a first SIM card interface and a second SIM card interface; and the first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. The method includes: when the terminal is in a first communication connection, receiving, by the terminal, a paging request for establishing a second communication connection; and when the paging request carries a first identifier used to indicate a second service, responding, by the terminal, to the paging request, to establish the second communication connection.

Abstract: A terminal device includes two antennas, one used as a main antenna and the other used as a diversity antenna. A method includes: receiving, by the terminal device, measurement configuration information sent by a network device, where the measurement configuration information is used to instruct the terminal device to measure at least one inter-frequency cell, and in a measurement period for measuring the at least one inter-frequency cell, a measurement frequency for measuring the at least one inter-frequency cell by the terminal device is equal to 1 and a measurement length for measuring the at least one inter-frequency cell by the terminal device meets a requirement for an inter-frequency cell measurement duration; and measuring, by the terminal device, the at least one inter-frequency cell based on the measurement configuration information by using the diversity antenna.