Huawei Technologies Co., Limited

Xiaodong Li

Wei Zhang

Yong Zhang

Wei Fu

Jianfei He

Qiao Liu

Chaogang Lu

Liang Chen

Hao Long

Jun Ma

Liping Wang

Italo Busi

Yong Guo

Zihuan Chen

Ruijie Xiao

Xingyue Quan

Yanzhao Pang

Dejun Li

Dafeng Tian

Xueren Yang

Maurizio Mattivi

Zhaojun He

Yingdong Ma

Fengbin Pan

Xingque Quan

Changliang Li

Jingshan Xian

A multi-beam polling based transmission method and apparatus, and a communications device and an electronic device readable storage medium based on the method are disclosed. An access point AP broadcasts a beacon message, where the beacon message is used to indicate duration of a beacon period; and sends a data packet that includes channel use duration to a station STA, where the channel use duration is used to indicate a target slot at which the AP communicates with the STA within a duration range of the beacon period, so that the AP can communicate with the STA at the target slot.

Multi-beam polling based transmission method and communications device

A frequency allocation method includes receiving, by a control device, a frequency allocation message using a dedicated channel, wherein the frequency allocation message carries a node identifier and a received signal strength information for a frequency, and determining, according to the frequency allocation message, a station needing frequency allocation, and obtaining node information of each station in a network. The method further includes computing, according to the received signal strength information for the frequency of the station needing frequency allocation and further according to the node information of each station, an optimum working frequency of the station needing frequency allocation, and allocating the optimum working frequency to the station needing frequency allocation.

Frequency allocation method, control device, and system in microwave network

A co-channel interference cancellation method and apparatus are provided. The method includes: obtaining effective interference by filtering co-channel interference according to a preset interference strength threshold, and obtaining a plurality of effective interference subgroups by grouping the effective interference; obtaining a reference interference sub-signal corresponding to the effective interference subgroup, by delaying a reference interference signal according to a determined interference delay of each effective interference subgroup; after each reference interference sub-signal passes through a corresponding adaptive interference reconstruction filter, obtaining a reconstructed interference signal by overlaying each reference interference sub-signal; and performing a subtraction operation on a received signal and the reconstructed interference signal. In this way, spectrum consumption is greatly reduced, and implementation is simple.

Co-channel interference cancellation method and apparatus

A digital pre distortion (DPD) calibration coefficient control method and apparatus are applied to a microwave communications device that includes an analog device and a digital device, and can ensure a DPD calibration effect, where the method includes determining, by interpolation and according to DPD calibration coefficients corresponding to at least 2typical working states of the analog device obtained in advance, a specified DPD calibration coefficient corresponding to a specified working state of the analog device, where N is a quantity of parameters representing a working state of the analog device, and controlling a DPD calibration coefficient according to the determined specified DPD calibration coefficient corresponding to the specified working state of the analog device.

Digital pre-distortion calibration coefficient control method and apparatus

The present disclosure provides a symbol synchronization method and apparatus. By means of the symbol synchronization method and apparatus, a timing location is adjusted outside an adaptive loop. In addition, the adaptive loop proceeds to according to an original function of the adaptive loop. That is, the timing location is stabilized to an initial symbol-synchronization location, and the timing location is then further corrected and adjusted. Therefore, impact of an error of a timing location on symbol synchronization is eliminated by correcting the timing location, and positioning accuracy of a symbol-synchronization location is improved.

Symbol synchronization method and apparatus

Embodiments of the present invention provide a method, includes: performing channel estimation on a signal of a current channel to obtain channel information of the current channel, performing calculation processing on the channel information obtained in current channel estimation and channel information obtained in previous channel estimation to obtain a phase difference of the current channel information, dividing the phase difference of the current channel information by a time interval between two times of channel estimation to obtain residual frequency offset information of the current channel, adding the residual frequency offset information of the current channel and frequency offset information which is of the channel and obtained in a previous calculation to obtain frequency offset information of the current channel, and outputting the frequency offset information of the current channel, so as to perform frequency offset correction on the signal of the channel according to the current frequency offset information.

Channel frequency offset estimation method, apparatus, and system

A method for reducing power consumption on an xDSL subscriber board, includes: obtaining a maximum downlink service bandwidth, a downlink signal-to-noise ratio margin in line connection parameters of the user port, and transmission mode information in a line template bound to the user port; determining whether the downlink signal-to-noise ratio margin is larger than a preset value, if yes, reducing a maximum downlink nominal total transmission power; otherwise, configuring the maximum downlink nominal total transmission power as a downlink transmit power in line connection parameters of the current port; calculating a minimum undistorted power supply voltage required by a corresponding line driver of each registered user port under the current configuration of the bound template, comparing minimum undistorted power supply voltage values, to find the largest value; and controlling an output voltage of a power module of a line driver equaling to the largest value.

Method, apparatus, and system for reducing power consumption on xDSL subscriber board

A method for binding a work Label Switch Path (LSP) with a protection LSP, including: transmitting a first message including binding information to a Path Merging Label Switching Router (PML) via a Path Switching Label Switching Router (PSL) so as to request for creating a protection LSP of the work LSP; the PML router assigning a label for the protection LSP based on the first message and returning a second message carrying the binding information; after receiving the second message, the PSL router binding the work LSP with the protection LSP based on the binding information, and transmitting a notification message including the binding information to the PML router; the PML router binding the work LSP with the protection LSP based on the binding information in the notification message.

Method for binding work label switching path and protection label switching path

The present invention discloses a method for data forwarding used in label switching networks, with which, at the source node, sequence numbers are added to the data packets forming an original data flow to be forwarded according to the forwarding order, then the data packets are mapped to label switched paths (LSP) for forwarding; at the destination node, the data packets received from the LSPs are merged into the same data flow as the original data flow to be forwarded according to the order of the sequence numbers. Meanwhile, during the data forwarding in accordance with the invention, an alarm mechanism is used to detect a faulted LSP, and the mapping strategy is adjusted timely to avoid the massive loss of the data packets, which guarantees the security of the data forwarding to the greatest extent while a high bandwidth utilization ratio is ensured.

Method and system for data forwarding in label switching network

Embodiments of the present invention disclose a method of domain supervision in a label switched network, including: designating one or more OAM domains on an LSP in the label switched network, determining an ingress node and an egress node of each OAM domain, inserting in-domain OAM frames containing supervision information at the ingress node of each OAM domain, receiving and parsing the in-domain OAM frames by the egress node of each OAM domain, and managing an OAM domain according to the supervision information contained in an in-domain OAM frame of the OAM domain. Furthermore, embodiments of the present invention also disclose a method of domain protection in a label switched network through adding a detection frame, such as Connectivity Verification (CV) frame, Fast Failure Detection (FFD) frame or the like, into an in-domain OAM frame.

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Shenzhen, China

Xiaodong Li