摘要:
The present invention discloses a data processing method and apparatus, and relates to the field of communications technologies. The method includes: obtaining information about a header field of a data packet; searching, by using the information, an exact match flow table for an exact match entry that matches the data packet; when the exact match entry that matches the data packet is found, determining whether an update time of a wildcard entry corresponding to the exact match entry is before a creation time of the exact match entry, where an exact flow in the exact match entry is a subset of a rule in the wildcard entry corresponding to the exact match entry; and when the update time of the wildcard entry corresponding to the exact match entry is before the creation time of the exact match entry, processing the data packet according to an action instruction corresponding to the exact match entry; or when the update time of the wildcard entry corresponding to the exact match entry is not before the creation time of the exact match entry, deleting the exact match entry. In the present invention, flow table updating and flow entry searching may be performed simultaneously. Therefore, there is no delay in data packet processing, and network performance is improved.
摘要:
The present invention provides a signal processing method, including: performing discrete Fourier transform DFT on a data symbol block including M data symbols, and outputting M symbols obtained after the DFT, where the M data symbols belong to K carriers, and at least two adjacent carriers in the K carriers are non-contiguous on a spectrum; or the M data symbols belong to K resource blocks of one carrier, and at least two adjacent resource blocks in the K resource blocks are non-contiguous on a spectrum; mapping the M symbols obtained after the DFT to M subcarriers corresponding to inverse fast Fourier transformation IFFT; and performing N-order IFFT on a plurality of mapped symbols. The present invention further provides a signal processing apparatus. The method and the apparatus maintain a relatively low PAPR of a processed DFT-OFDM signal, thereby improving wireless signal transmission reliability.
摘要:
Embodiments of the present invention relate to a method for returning a base station signal and a base station for implementing the method. The base station provided in the embodiments of the present invention includes a first return unit located in a radio frequency system and a second return unit located in a baseband processing system. The first return unit is configured to perform analog modulation on a base station uplink analog signal of a first bandwidth to obtain a base station uplink analog signal of a second bandwidth, and send the uplink analog signal of the second bandwidth to the second return unit, where the second bandwidth is larger than the first bandwidth. The second return unit is configured to receive the base station uplink analog signal of the second bandwidth, demodulate the base station uplink analog signal of the second bandwidth to obtain the uplink analog signal of the first bandwidth, where after undergoing baseband processing, the uplink analog signal of the first bandwidth is sent to a core network.
摘要:
The present invention discloses an information transmission method, a terminal, and a base station. The method includes: receiving, by a machine type communication MTC terminal, downlink control information from a base station, where the downlink control information includes identification information of a HARQ process and uplink index field information, the uplink index field information occupies two bits, and the two bits include a first bit and a second bit; and determining, according to a subframe location n at which the downlink control information is transmitted, the identification information of the HARQ process, and the uplink index field information, a first start subframe location and a second start subframe location for transmitting uplink data corresponding to the HARQ process. TTI bundling in an MTC scenario can be implemented by using the method.
摘要:
The present invention relates to the communications field, and provides a frame synchronization method, user equipment, and a base station, to implement frame time synchronization in a high-low frequency hybrid communications system. The method includes: determining, by user equipment, a first moment at which a first frequency frame is received; obtaining a receive time difference, where the receive time difference is a time difference between a moment at which the user equipment receives a second frequency frame and the moment at which the user equipment receives the first frequency frame; determining, according to the receive time difference and the first moment, a start moment for scanning a receive beam corresponding to the second frequency frame; scanning the receive beam at the start moment; and receiving data sent by using the second frequency frame, to complete synchronization of the second frequency frame.
摘要:
A method and an apparatus for adjusting a network configuration, and : receiving requirement information sent by a terminal device UE, where the requirement information includes electricity-saving request information of the UE or a maximum transmit power of the UE; acquiring a mapping relationship corresponding to the requirement information, where the mapping relationship is a correspondence between requirement information and a service mode; acquiring service mode information according to the mapping relationship and sending the service mode information to the UE, so that the UE acquires selection information according to the service mode information; and receiving the selection information sent by the UE and modifying a configuration of a network device according to a service mode corresponding to the selection information, where the selection information corresponds to a service mode in the service mode information.
摘要:
An embodiment of the present invention provides a multi-beam forming apparatus, where the multi-beam forming apparatus includes at least one radio frequency channel submodule, a phased array submodule, and an interface module; the radio frequency channel submodule converts a baseband signal received by the interface module from the outside into a radio frequency signal and sends the radio frequency signal to the phased array submodule, and converts the radio frequency signal received by the phased array submodule into a baseband signal, where the baseband signal is output to the outside by using the interface module; the phased array submodule performs beam forming on the radio frequency signal sent by the radio frequency channel submodule and then sends, by using an antenna, the radio frequency signal obtained after the beam forming, and sends data received from the antenna to the radio frequency channel submodule; the interface module transmits the baseband signal between the radio frequency channel submodule and an external baseband data unit, and is configured for multi-module expansion connection to another apparatus. According to the present invention, joining of multi-beam forming apparatuses in a base station can be implemented by providing a modular multi-beam forming apparatus.
摘要:
Embodiments of the present invention provide a method and an apparatus for generating a standard cancellation signal, and belong to the communication technology field. An embodiment includes: setting weight values according to frequency points of a current cell and its neighboring cells; according to the frequency points of the current cell and neighboring cells and the weight values of the frequency points, performing Fourier transform to obtain a corresponding time-domain signal; and performing highest amplitude normalization on the time-domain signal and performing a cyclic shift to obtain a standard cancellation signal. The embodiments generate a standard cancellation signal according to frequency points of the current cell and its neighboring cells, so that the current cell and its neighboring cells share the peak clipping noise, and therefore helping improve the peak clipping performance of the current cell or reduce the EVM distortion. In addition, due to the existence of large-scale fading, actual interference of the peak clipping noise in the current cell on the neighboring cells is small.
摘要:
A method and a device for forwarding an MPLS packet, the method comprising: configuring an MPLS packet interface board in an ether switching device, allocating a private MAC address to a port number of the MPLS packet interface board, and establishing a correlation between the private MAC address and the public MAC address; obtaining the private MAC address and the port number corresponding to a destination public MAC address of the MPLS packet according to the correlation; substituting the private MAC address for the public MAC address in the MPLS packet; forwarding the MPLS packet to the corresponding port according to the private MAC address. The device comprises: an MPLS packet interface board arranged in an ether switching device, for providing a dedicated interface for MPLS packet forwarding; and a MAC address converting module, for converting between the public MAC address in the MPLS packet and the private MAC address in the ether switching device. According to the invention, various services based on MPLS, such as PWE3, L2VPN, MPLS traffic engineering and so on, can be supported on layer-2 and layer-3 ether switch chips.