Abstract: A method for silently starting an application in background includes: monitoring running statuses of applications on a terminal and when it is detected that a first application exits running, determining whether the first application is a silently started application; and if yes, intercepting prompt information for the first application, where the first application is any one of the applications on the terminal, and the silently started application is an application recorded in a silent application list. According to this method, the prompt information for the first application of the silently started application is intercepted, so that a problem that it takes an excessively long time to cold start an application and a problem of unnecessary interference caused by the prompt information to a user are resolved, thereby improving user experience.

Abstract: A method for writing multiple copies into a storage device includes receiving a first write data request that includes an identity (ID) of a first logical storage unit, target data, and a logical block address (LBA) of the first logical storage unit, determining that data stored in storage space corresponding to the LBA of the first logical storage unit is not accessed by another data access request, writing the target data into the storage space corresponding to the LBA of the first logical storage unit, generating a second write data request that includes an ID of a second logical storage unit, the target data, and an LBA of the second logical storage unit, and writing the target data into storage space corresponding to the LBA of the second logical storage unit.

Abstract: A television program switching method includes that a program selection instruction entered by a user is received when an electronic program guide (EPG) screen is displayed on a mobile terminal, where the program selection instruction includes a program identifier, and where the EPG screen includes at least two program identifiers and first program information corresponding to each program identifier. The EPG is searched for program frequency information corresponding to the program identifier according to the program identifier, and the program frequency information is sent to a to-be-controlled television.

Abstract: A chip package structure, including a substrate, multiple chips and multiple discrete devices that are packaged on an upper surface of the substrate, and a heat dissipation apparatus, where the heat dissipation apparatus includes an insulation layer and a thermally conductive layer that are laminated. The insulation layer completely encloses and adheres to outer surfaces of the multiple chips, outer surfaces of the multiple discrete devices, and the upper surface of the substrate and configured to conduct heat generated by the multiple chips and the multiple discrete devices to the thermally conductive layer and the substrate such that the heat generated by the multiple chips and the multiple discrete devices dissipated using the thermally conductive layer and the substrate.

Abstract: Example memory reclaiming methods and apparatuses are provided to resolve a problem that application data is lost and a restart speed of an application becomes slower in a manner of reclaiming a memory by killing the application. One example memory reclaiming method includes determining an application program that occupies a to-be-reclaimed memory and selecting at least one virtual address space segment according to a running state of the application program. A virtual address space that is in the selected at least one virtual address space segment and that is occupied by the application program is reclaimed. The application program is not directly killed, but instead, only a memory occupied by application data that can be cleared in the running state is reclaimed according to the running state of the application program. Therefore, less application data is lost.

Abstract: A coherent LIDAR method and apparatus are provided, in which two optical signals having a first frequency difference are reflected by an object. A difference in frequency between the corresponding received and reflected signals is determined. The frequency difference between the reflected signals differs from the first frequency difference due to Doppler effects. The object velocity is determined based on a comparison between the first frequency difference and the frequency difference in the reflected signals. The emitted signals can be produced by modulating a common light source. The reflected signals are inherently mixed at the receiver and further processed. Distance to the object can be determined by pulsing the emitted signals and measuring a time of flight by detecting corresponding pulse edges in the reflected signals, or by using phase sweeping. The emitter can be implemented using an optical phased array.

Abstract: A switchable artificial magnetic conductor (S-AMC) element that includes a conductive layer, a conductive patch located on one side of the conductive layer and electrically isolated from the conductive layer, and an open stub located on an opposite side of the conductive layer and electrically isolated from the conductive layer. A switch element is configured to selectively open and close an electrical connection between the conductive patch and the open stub in response to a control signal. When the electrical connection is closed the conductive patch presents a high impedance, magnetically conductive surface for radio frequency (RF) signals within a defined frequency band, and when the electrical connection is open the conductive patch presents an electrically conductive surface for RF signals within the defined frequency band.

Abstract: In a method for security handling in a mobility of a terminal device, a target access and mobility management function (AMF) entity receives a first message for registering a terminal device, sends a second message to a source AMF entity after receiving the first message. The source AMF entity derives a first key based on a key between the source AMF entity and the terminal device, sends the first key to the target AMF entity. The target AMF entity determines to use the first key based on security related information after receiving the first key and determines a communication key between the target AMF entity and the terminal device based on the first key after determining to use the first key.

Abstract: System and method embodiments are disclosed to provide mechanisms wireless communications. A method comprises transmitting, by a network device to a non-long term evolution (LTE) user equipment (UE), a bandwidth partitioning information describing a non-LTE bandwidth partition of a system bandwidth. The system bandwidth comprises an LTE bandwidth partition coexisting with the non-LTE bandwidth partition in the system bandwidth, and the LTE bandwidth partition is within the non-LTE bandwidth partition or the LTE bandwidth partition is adjacent to the non-LTE bandwidth partition.

Abstract: An uplink control signal transmission method and apparatus, where the method includes determining, by a first device, a first quantity of symbols, and sending, by the first device, an uplink control signal to a second device on at least one resource based on the first quantity of symbols, where a quantity of symbols included in the uplink control signal is a second quantity of symbols, and the second quantity of symbols is greater than or equal to the first quantity of symbols.

Abstract: The disclosed structures and methods are directed to a method for compensation of linear and nonlinear effects in optical fiber of a coherent optical signal transmitted through an optical link. The method comprises receiving a coherent optical signal having carriers; determining values of intensity vectors for each carrier; determining values of filtered intensity vectors for each carrier by filtering the values of the intensity vectors at frequencies lower than a cut-off frequency of a filter; determining nonlinear compensation coefficients for each carrier based on the filtered intensity vectors; and modifying the digital coherent optical signal based on the nonlinear compensation coefficients.

Abstract: The present invention discloses a sound signal processing method, a terminal, and a headset, to prevent a sound in an external environment from causing unnecessary disturbance to a user, thereby improving user experience. The terminal includes: a microphone, configured to collect an ambient sound signal; and a processor, configured to: obtain the sound signal collected by the microphone, and process, based on user status information, the ambient sound signal collected by the microphone, where the user status information includes a geographical location of a user who uses the terminal or a motion status of the user.

Abstract: A method for managing a storage medium in a storage device is provided. The method includes detecting whether there is a problematic storage block in a data storage area of the storage medium, wherein the problematic storage block is a storage block whose health degree is less than a preset value, wherein the health degree is used to measure performance of a storage block in the storage medium and is in direct proportion to the performance of the storage block; and replacing the problematic storage block with a replacement storage block in a replacement area of the storage medium when the problematic storage block is detected, wherein a health degree of a storage block in the data storage area is greater than a health degree of a storage block in the replacement area.

Abstract: A data sending method, where the method includes receiving, by a forwarding device using a first flexible Ethernet (FlexE) group and in multiple timeslots included in a first timeslot set, multiple first encoded data blocks from a physical coding sublayer (PCS), determining, by the forwarding device according to the timeslots included in the first timeslot set and the first FlexE group, a second FlexE group and multiple timeslots included in a second timeslot set, and sending, by the forwarding device, the first encoded data blocks using the second FlexE group and in the timeslots included in the second timeslot set. The forwarding device does not need to process the first encoded data blocks in a conventional layer 2 or layer 3 forwarding mode. Therefore, a processing delay can be reduced, and a transmission delay can be reduced.

Abstract: Embodiments of the present disclosure provide a data transmission method, apparatus, and device. The method includes: performing, by a terminal, encryption and integrity protection on a data packet by using a public key of a network device and a private key of the terminal, where the data packet includes user data; and sending, by the terminal, the data packet to the network device, to send the user data to a server by using the network device. Encryption and integrity protection are performed on the data packet respectively by using the public key of the network device and the private key of the terminal, and when no radio resource control RRC connection is established, the data packet is sent to the network device.

Abstract: Embodiments of the present invention provide a method and terminal for operating through a touch screen. The method includes: after a transparent virtual keyboard is displayed, receiving a first operation for a display area of the transparent virtual keyboard through a touch screen; determining, according to the first operation, that a target object of the first operation is a page content in the display area of the transparent virtual keyboard; and performing the first operation for the page content in the display area of the transparent virtual keyboard. Therefore, the operation may be directly performed for the determined target object. Therefore, no additional operation is required to perform switching between the transparent virtual keyboard and the page, thereby reducing user operations and improving the user experience.

Abstract: The method in the embodiment of the present invention includes: determining a shared frequency band, and a cell of the shared frequency band is a secondary serving cell of UE1 that performs communication by using the first network and a secondary serving cell of UE2 that performs communication by using the second network, and both the UE1 and the UE2 can work on the shared frequency band and at least one other frequency band than the shared frequency band; and transmitting only a common signal of the second network on the shared frequency band when service transmission of the first network is performed on the shared frequency band.

Abstract: The application pertains to determining a rank of channel loss extent. A base station sends to a terminal a signaling indicating that there are N ranks of channel loss extent. Each rank has a corresponding number of random access preamble repetitions. The base station receives from the terminal device one or more transmissions of a random access preamble in a first number of repetitions of the random access preamble. The base station determines the rank of channel loss extent according to a random access preamble group in which the received random access preamble is located, or the first number of repetitions of the received random access preamble. A channel loss is a reference signal received power (RSRP). After determining the rank of channel loss extent, the base station determines a second number of repetitions corresponding to the determined rank of channel loss extent, for sending or receiving uplink/downlink information.

Abstract: A user equipment (UE) may determine that a transmission resource includes a first orthogonal frequency-division multiplexing (OFDM) symbol that is configured as a downlink symbol or as flexible, where the transmission resource is allocated for uplink (UL) transmissions during a time duration, and includes K transmission occasions (TOs). The UE may transmit a first UL transmission in the transmission resource omitting the first OFDM symbol. The first UL transmission includes K repetitions to be transmitted in the respective K TOs, and the K repetitions includes an initial transmission and at least one retransmission of the initial transmission.

Abstract: A battery cover is applied to the electronic device and configured to couple to a housing of the electronic device, and includes a glass substrate. A non-transparent layer is disposed on a first side of the glass substrate. At least one first through-hole is disposed on the non-transparent layer opposite to a camera assembly disposed in the electronic device. A camera region is disposed on the first side of the glass substrate disposed opposite to the at least one first through-hole. A film-coated layer is disposed in the camera region of the glass substrate. An area of the camera region is greater than or equal to an area of the at least one first through-hole.