Abstract: A dual-sensor signal collecting circuit comprises circuit (11), a second sensor signal collecting circuits, an AD sampling circuit, an AND gate determination circuit and a collected signal averaging circuit. Output ends of the sensor signal collecting circuits are connected to respective input ends of the AND gate determination circuit, respective input ends of the collected signal averaging circuit and a first AD sampling port of the AD sampling circuit; an output end of the AND gate determination circuit is connected to a power supply end of the collected signal averaging circuit; an output end of the collected signal averaging circuit is connected to the first AD sampling port of the AD sampling circuit. When the sensors operate normally, the collected signal averaging circuit outputs an average sampling value to the first AD sampling port, when one is damaged, a sampling value of the one operating normally is output to the first AD sampling port.

Abstract: A dual-sensor signal collecting circuit comprises circuit (11), a second sensor signal collecting circuits, an AD sampling circuit, an AND gate determination circuit and a collected signal averaging circuit. Output ends of the sensor signal collecting circuits are connected to respective input ends of the AND gate determination circuit, respective input ends of the collected signal averaging circuit and a first AD sampling port of the AD sampling circuit; an output end of the AND gate determination circuit is connected to a power supply end of the collected signal averaging circuit; an output end of the collected signal averaging circuit is connected to the first AD sampling port of the AD sampling circuit. When the sensors operate normally, the collected signal averaging circuit outputs an average sampling value to the first AD sampling port, when one is damaged, a sampling value of the one operating normally is output to the first AD sampling port.

Abstract: Embodiments of the present disclosure provide a method for selecting a public land mobile network PLMN, and an apparatus and a device for same. The method includes: during a process of selecting a network by a mobile terminal, if it is learned by means of determining that a registered public land mobile network RPLMN and a home public land mobile network HPLMN correspond to the mobile terminal are unavailable, acquiring a PLMN network in a PLMN list pre-stored in the mobile terminal, to perform a registration, wherein the PLMN list includes network information of one or more other PLMN networks that are selected and successfully registered.

Abstract: A method can be implemented by a user equipment to update RPLMN information. A PLMN identifier is selected from an available PLMN identifier set that includes PLMN identifiers with RPLMN information, HPLMN information, UPLMN information, and OPLMN information separately. A location update request message that carries the PLMN identifier is sent to a mobile switching center. A TMSI reallocation command is acquired from the mobile switching center according to the location update request message. It is determined whether location update acceptance information that is returned by the mobile switching center according to the location update request message is currently acquired. An operation of updating the PLMN identifier to registered public land mobile network RPLMN information is performed when the location update acceptance information is acquired and the operation of updating the PLMN identifier to RPLMN information is skipped when the location update acceptance information is not acquired.

Abstract: A network registration method and apparatus, and a mobile terminal are presented. During re-registration with a network, after receiving a channel allocation rejection message sent by the network, a mobile terminal sorts all available frequency channels according to network resource statuses of frequency channels with which network registration failed before and that are in a low priority list. And then the mobile terminal tries to camp on all the available frequency channels according to an order of the sorting to determine a frequency channel to be camped on. The mobile terminal sends a network registration message to register with the frequency channel to be camped on.

Abstract: Embodiments of the present disclosure disclose a method for a terminal to camp on a cell. A method for a terminal to camp on a cell includes acquiring, by a mobile terminal, a signal of an available cell, where when the mobile terminal is not camped on a serving cell, the signal of the available cell includes a signal, detected by the mobile terminal, of the cell, or when the mobile terminal camps on the serving cell, the signal of the available cell includes a signal of the serving cell and a signal of a neighboring cell of the serving cell. When a cell signal value of the available cell meets a standard cell access criterion, selecting, by the mobile terminal according to a signal strength and a historical camp-on success rate, an effective cell from the available cell, and camping, by the mobile terminal, on the effective cell.

Abstract: Embodiments of the present disclosure provide a method for selecting a public land mobile network PLMN, and an apparatus and a device for same. The method includes: during a process of selecting a network by a mobile terminal, if it is learned by means of determining that a registered public land mobile network RPLMN and a home public land mobile network HPLMN correspond to the mobile terminal are unavailable, acquiring a PLMN network in a PLMN list pre-stored in the mobile terminal, to perform a registration, wherein the PLMN list includes network information of one or more other PLMN networks that are selected and successfully registered.

Abstract: Embodiments of the present invention provide a roaming network access method and apparatus, where the method includes: obtaining a mobile country code MCC of a roaming area; obtaining a preferential roaming list, where the preferential roaming list is used to indicate information about at least one network that a user preferentially attempts to register with when the user is roaming; selecting a network that matches the MCC from the preferential roaming list and searching for the selected network; and each time a network is found by the searching, attempting to register with the found network. By means of the roaming network access method and apparatus provided in the embodiments of the present invention, duration of network searching performed by user equipment is shortened, time spent by the user equipment on initial network access in the roaming area is reduced.

Abstract: Embodiments relate to a signaling processing method and user equipment. The signaling processing method includes: measuring a received signal level of user equipment with respect to a current cell, determining a camping parameter of the user equipment with respect to the cell according to the received signal level, making compensation for the camping parameter, and determining that the user equipment camps on the cell if the camping parameter after compensation is greater than a preset camping threshold.

Abstract: A method can be implemented by a user equipment to update RPLMN information. A PLMN identifier is selected from an available PLMN identifier set that includes PLMN identifiers with RPLMN information, HPLMN information, UPLMN information, and OPLMN information separately. A location update request message that carries the PLMN identifier is sent to a mobile switching center. A TMSI reallocation command is acquired from the mobile switching center according to the location update request message. It is determined whether location update acceptance information that is returned by the mobile switching center according to the location update request message is currently acquired. An operation of updating the PLMN identifier to registered public land mobile network RPLMN information is performed when the location update acceptance information is acquired and the operation of updating the PLMN identifier to RPLMN information is skipped when the location update acceptance information is not acquired.

Abstract: Embodiments of the present invention relate to the field of wireless communications technologies, and provide a switching method. The method specifically includes: when user equipment is in idle mode, acquiring a 2G/3G base station candidate set; when initiating a voice service, sending a CSFB request message to an LTE base station; receiving a standard and a frequency of a target 2G/3G base station that are sent by the LTE base station to the user equipment; determining, according to the standard and the frequency of the target 2G/3G base station, whether the 2G/3G base station candidate set includes the target 2G/3G base station; and if the 2G/3G base station candidate set includes the target 2G/3G base station, switching, from the LTE base station to the target 2G/3G base station according to the standard and the frequency of the target 2G/3G base station.

Abstract: A network registration method and apparatus, and a mobile terminal are presented. During re-registration with a network, after receiving a channel allocation rejection message sent by the network, a mobile terminal sorts all available frequency channels according to network resource statuses of frequency channels with which network registration failed before and that are in a low priority list. And then the mobile terminal tries to camp on all the available frequency channels according to an order of the sorting to determine a frequency channel to be camped on. The mobile terminal sends a network registration message to register with the frequency channel to be camped on.

Abstract: Embodiments of the present disclosure disclose a method for a terminal to camp on a cell. A method for a terminal to camp on a cell includes acquiring, by a mobile terminal, a signal of an available cell, where when the mobile terminal is not camped on a serving cell, the signal of the available cell includes a signal, detected by the mobile terminal, of the cell, or when the mobile terminal camps on the serving cell, the signal of the available cell includes a signal of the serving cell and a signal of a neighboring cell of the serving cell. When a cell signal value of the available cell meets a standard cell access criterion, selecting, by the mobile terminal according to a signal strength and a historical camp-on success rate, an effective cell from the available cell, and camping, by the mobile terminal, on the effective cell.

Abstract: The present invention discloses a method and an apparatus for searching for a network. The method includes: determining that a user equipment (UE) camping on a cell of a current public land mobile network (PLMN) is in an access barred state; determining that the UE cannot be successfully registered with the current PLMN; and performing a PLMN search. In the method and the apparatus for searching for a network according to embodiments of the present invention, if it is determined that the UE normally camping on the cell of the current PLMN is in the access barred state and cannot be successfully registered with the current PLMN, the PLMN search is performed, so that when the UE is in the access barred state, the UE can still perform the PLMN search, and can further select a new PLMN for access and execute a normal service, thereby improving user experience.

Abstract: The present invention discloses a method and an apparatus for searching for a network. The method includes: determining that a user equipment (UE) camping on a cell of a current public land mobile network (PLMN) is in an access barred state; determining that the UE cannot be successfully registered with the current PLMN; and performing a PLMN search.