Abstract: A data transmission method and a device, where the method includes obtaining a service data packet that needs to be sent to a peer device, determining a priority corresponding to the service data packet, writing the service data packet to a packet buffer when the priority is lower than a preset level, encapsulating the data stored in the packet buffer in order to generate a to-be-sent packet when data stored in the packet buffer meets a transmission condition, and sending the to-be-sent packet to the peer device.

Abstract: A handover method in a master-slave network, and a master device, and slave devices are provided. The method includes when a master device or a first slave device determines that a user device needs to be handed over to a second slave device, the first slave device sends, to the second slave device, a first identifier of a first network interface allocated by the first slave device to the user device, and first network connection information used after the user device establishes a connection to the first network interface of the first slave device. The first identifier of the first network interface and a second identifier of the user device correspond on a one-to-one basis. The first slave device deactivates the first network interface and the second slave device activates a second network interface.

Abstract: A method for creating a port group, includes generating, by a first software defined network (SDN) controller, the specified identifier according to a device identifier of a first forwarding device in a preset path, a device identifier of a last forwarding device in the preset path, and a device identifier of a specified forwarding device in the preset path; and sending, by the first SDN controller, the specified identifier to a second SDN controller, so that the second SDN controller creates, on the specified forwarding device, a specified port group corresponding to the specified identifier. Therefore, the first SDN controller needs to interact with the second SDN controller only once, to create a port group on the specified forwarding device that is directly controlled by the second SDN controller, and thus the port group creation process is simple.

Abstract: Present disclosure provide an audio signal encoding method and encoder, which relate to the communications field and can perform proper bit allocation for spectral coefficients of an audio signal. The method includes: splitting spectral coefficients of a current frame into subbands, acquiring quantized energy envelopes of the subbands; adjusting quantized energy envelopes values of some subbands; perform bit allocation according to adjusted quantized energy envelopes of the some subbands; quantizing a spectral coefficient of a subband to which at least one bit is allocated after the bit allocation.

Abstract: Embodiments of the present application provide a physical downlink data channel transmission method, a base station, and user equipment. The physical downlink data channel transmission method provided in the embodiments of the present application includes: mapping a physical downlink data channel to a time-frequency resource in at least one timeslot, where a time-frequency resource in each timeslot includes at least one enhanced physical resource block pair, and the enhanced physical resource block pair includes two consecutive physical resource blocks in a frequency domain in a same timeslot; and sending the physical downlink data channel to UE. In the embodiments of the present application, a transmission time interval of the physical downlink data channel can be reduced.

Abstract: The present invention relates to a software upgrade method for a terminal. The method includes: receiving, by a second terminal, a first message broadcast by at least one first terminal, where the first message includes information of application software maintained by the first terminal; determining, by the second terminal according to the information of the application software maintained by the first terminal, whether there is upgradeable application software on the second terminal; when it is determined that there is upgradeable application software on the second terminal, sending an upgrade request to the first terminal; receiving, by the second terminal, an upgrade response that is returned by the first terminal according to the upgrade request, and downloading upgrade data of the upgradeable application software; and updating the application software according to the upgrade data of the upgradeable application software.

Abstract: The present invention provides a network device and a method for allocating an access point name. The network device includes: a receiving module, configured to receive a user activation request sent by user equipment UE, where the user activation request includes user location information ULI; a parsing module, configured to parse the ULI received by the receiving module, to acquire an area code of a location of the UE; a determining module, configured to determine an area code set to which the area code acquired by the parsing module belongs; and an acquiring module, configured to acquire, according to a mapping relationship between the area code and an actual access point name APN, the actual APN for the UE. The embodiments of the present invention can implement centralized management on UE based on a geographical area range.

Abstract: A network element selection method and a network element selector are provided. The network element selection method includes: receiving, by a network element selector, a request message sent by a base station, where the request message includes information about user equipment UE and a service chain head, the service chain head includes a session index, and the session index is empty or the session index is allocated by a first controller serving the UE; determining, by the network element selector based on the session index, a controller providing a service; and sending, by the network element selector, the request message to the controller providing the service, so that the controller providing the service serves the UE. In this application, the network element selector is deployed to provide a load balance function.

Abstract: Embodiments of the present application relate to a video image encoding method, a video image decoding method, an encoding device, and a decoding device. The method includes: determining a motion vector group of a current encoding block; determining prediction values of a first component set of a motion model initialization vector; determining values of the first component set according to the prediction values of the first component set; and encoding the values of the first component set, and transmitting encoded values of the first component set. According to the video image encoding method in the embodiments of the present application, a motion model initialization vector is determined according to a motion vector group; values of a motion model are determined according to the motion model initialization vector. In this way, a volume of data and a quantity of occupied bits in encoding and decoding transmission can be reduced.

Abstract: Embodiments can provide spurs removal in a pilot-tone spread signal. For achieving this, at least one peak in the pilot-tone spread signal may be found. A predetermined small range of the spectra power around the at least one peak may be removed. In some situations, the removal of the spurs in the pilot-tone spread signal may result in inadvertent removal of a normal part of the pilot-tone spread signal. For addressing this, a power ratio between the spectrum of the pilot-tone spread signal before the removal and after the removal can be calculated. For accounting for the power loss due to the spurs removal, this power ratio can be applied to the pilot-tone spread signal after the removal to obtain a corrected pilot-tone spread signal.

Abstract: A mobile terminal, where the mobile terminal includes an antenna, where the antenna includes a first radiator, a second radiator that forms an electrical connection with the first radiator, a first ground branch that forms a coupling part with one end of the first radiator, and a second ground branch that forms another coupling part with the other end of the first radiator, where the first radiator, the first ground branch, and the second ground branch form an outer frame of the mobile terminal, the second radiator encircles in an inner side of the outer frame formed by the first radiator, the first ground branch, and the second ground branch, and the first radiator and the second radiator generate resonances in different frequency bands.

Abstract: Embodiments of the present disclosure provide a decoding method of a polar code, including: acquiring a receiving sequence and a check matrix, wherein the receiving sequence is output on a channel after an input mapping sequence is encoded; carrying out Trellis path search according to the receiving sequence and the check matrix, and calculating Trellis path likelihood information corresponding to the input mapping sequence; calculating a decision value corresponding to the input mapping sequence according to the Trellis path likelihood information; and de-mapping the calculated decision value corresponding to the input mapping sequence according to a preset mapping relation to obtain a decoding sequence. The input mapping sequence belongs to a finite field GF(q), when decoding the polar code, the Trellis path search is carried out, and the decision value is calculated and de-mapped to simultaneously reduce a maximum list value and greatly reduce an average list value.

Abstract: A method for a handover between distributed access points is disclosed, including receiving, by a central AP, an Ethernet frame; adding, by the central AP, a sequence number to the frame according to an address of a wireless terminal; sending, by the central AP to an AP 1, the frame to which the sequence number is added, and storing the frame to which the sequence number is added in a historical frame set of the wireless terminal; and sending, by the central AP, a frame in the historical frame set of the wireless terminal to an AP 2 when the wireless terminal is handed over from the AP 1 to the AP 2. If the wireless terminal moves fast, the central AP can send the frame in the historical frame set to the wireless terminal using the AP 2, so that a downlink packet loss is reduced.

Abstract: An information transfer method, includes: receiving N pieces of information and N pieces of corresponding identification information sent by a server according to a data obtaining request; obtaining attribute information of at least two pieces of information in the N pieces of information, where the attribute information includes at least one of the following attributes of the at least two pieces of information: content separability or location adjustability; generating to-be-posted information according to the attribute information of the at least two pieces of information and an operation instruction of a user for the at least two pieces of information; and determining identification information corresponding to the to-be-posted information and second indication information corresponding to the to-be-posted information, and sending the server the identification information and the second indication information corresponding to the to-be-posted information.

Abstract: A method to display a virtual machine name is provided. The method is applied to a virtual machine name management apparatus in a Network Function Virtualization (NFV) system. The NFV system further includes a virtual machine management device and a virtual machine creation device. The method includes receiving, by the virtual machine name management apparatus, a virtual machine name request message sent by the virtual machine management device, generating, according to the virtual machine name request message and each naming convention, a formal name corresponding to the virtual machine creation device and an alias corresponding to each virtual machine management device, and sending the alias corresponding to each virtual machine management device to each virtual machine management device. Different names may be displayed for a same virtual machine in each virtual machine management device in the NFV system.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for performing communication in software-defined networking, and a communications system. The method includes: receiving a message sent by a network device, where the message includes a signaling message; determining, according to a control policy, a matching condition that matches the message, where the control policy includes a matching condition and operation information corresponding to the matching condition; processing the message according to the operation information corresponding to the matching condition that matches the message; and sending the processed message to the network device. According to the method and the apparatus for performing communication in software-defined networking, and the communications system in the present disclosure, a problem in the prior art that a control device serving as a network control center cannot communicate with a base station is resolved.

Abstract: Embodiments of the present invention disclose a communication method: sending indication information to two or more user equipments, where the indication information includes timeslot indication information and frequency band indication information of the two or more user equipments, at least two user equipments in the two or more user equipments have same timeslot indication information, and the user equipments that have the same timeslot indication information have different frequency band indication information; and obtaining an acknowledgment frame sent by one or more user equipments of the two or more user equipments in a timeslot indicated by respective timeslot indication information and by using a frequency band indicated by respective frequency band indication information. The present invention is used for acknowledgment frame sending.

Abstract: Present disclosure provides a signal processing method and device. Spectral coefficients of a current frame of a frequency-domain audio signal are divided into N sub-bands. N is a positive integer greater than 1. According to an energy attribute and a spectral attribute of a first subset of the N sub-bands, whether to modify original envelope values of sub-bands in the first subset is determined. A frequency range of each of the M sub-bands in the first subset is lower than a frequency range of each of the K sub-bands. Based on a determination that the original envelope values of the M sub-bands need to be modified, the original envelope values of the M sub-bands are modified individually to obtain modified envelope values of the M sub-bands. Encoding bits are allocated to each of the N sub-bands according to the modified envelope values of the M sub-bands and original envelope values of the K sub-bands.

Abstract: An image recognition accelerator, a terminal device, and an image recognition method are provided. The image recognition accelerator includes a dimensionality-reduction processing module, an NVM, and an image matching module. The dimensionality-reduction processing module first reduces a dimensionality of first image data. The NVM writes, into a first storage area of the NVM according to a specified first current I, ? low-order bits of each numeric value of the first image data on which dimensionality reduction has been performed, and writes, into a second storage area of the NVM according to a specified second current, (N??) high-order bits of each numeric value of the first image data on which dimensionality reduction has been performed. The image matching module determines whether an image library stored in the NVM includes image data matching the first image data on which dimensionality reduction has been performed.

Abstract: An optical coupler at an edge of a photonic integrated circuit (PIC) is provided and configured to match a mode of a waveguide of the PIC to a mode of an external optical fiber. A core of the waveguide terminates prior to the edge and can include an inverted taper for mode enlargement. The waveguide cladding includes an inverted taper and is surrounded by an outer cladding material of lower refractive index, forming a second waveguide. The cladding and outer cladding cooperate to guide light between the core and the edge while the inverted taper contributes to mode enlargement. The outer cladding material is selected to have a refractive index which facilitates the mode matching to optical fiber. The coupler can be provided using lithography. Material underneath the waveguide cladding can be removed by an undercutting process and the outer cladding material deposited in place thereof.