Abstract: An energy storage module with bypass circuit is provided. The energy storage module includes a first battery pack, a first capacitor, a bypass circuit and a bidirectional isolated converter. The first capacitor is electrically connected between the positive bus connection terminal and the first positive battery terminal or between the negative bus connection terminal and the first negative battery terminal. The bypass circuit is electrically connected to two terminals of the first capacitor. The first positive and negative connection terminals of the bidirectional isolated converter are electrically connected to the positive and negative bus connection terminals respectively or are electrically connected to the first positive and negative battery terminals respectively. The second positive and negative connection terminals of the bidirectional isolated converter are electrically connected to the two terminals of the first capacitor respectively.

Abstract: A data feedback method includes acquiring, by the beamformee, the number of columns from a null data packet announcement (NDPA) message; detecting the number of active first spatial streams; comparing the number of first spatial streams with the number of columns, and taking the smaller value obtained from the comparison as the number of second spatial streams required for feedback; and feeding back the number of second spatial streams and spatial stream measurement information about the second spatial streams to the beamformer.

Abstract: A data feedback method includes acquiring, by the beamformee, the number of columns from a null data packet announcement (NDPA) message; detecting the number of active first spatial streams; comparing the number of first spatial streams with the number of columns, and taking the smaller value obtained from the comparison as the number of second spatial streams required for feedback; and feeding back the number of second spatial streams and spatial stream measurement information about the second spatial streams to the beamformer.

Abstract: The present invention relates to the field of communications, and provides a link adaptation method and device, so as to determine, according to transmission quality of a signal in a link, to perform antenna alignment and/or frequency adjustment. The method includes: detecting, by a first antenna device, an RSSI of a link between the first antenna device and a second antenna device; when it is determined that the RSSI is greater than or equal to a first RSSI threshold, detecting, by the first antenna device, an SINR of the link; and choosing, by the first antenna device according to the RSSI and the SINR, to perform frequency adjustment and/or antenna alignment with the second antenna device. Embodiments of the present invention are applied to link adaptation.

Abstract: The present invention discloses a multi-standard network convergence method, device, and system and relates to the field of communications technologies. The method includes: acquiring an AC mapping parameter corresponding to an RLC packet; performing encapsulation on the AC mapping parameter and the RLC packet; and forwarding an encapsulated packet to a second network, so that the second network acquires a corresponding AC according to the AC mapping parameter in the encapsulated packet, and places the RLC packet into a transmission queue corresponding to the AC for transmission. According to the present invention, an AC mapping parameter and an RLC packet are encapsulated and then sent to a second network, so that the second network may determine a corresponding AC according to the AC mapping parameter, so as to accurately place the RLC packet into a corresponding transmission queue for transmission and further implement multi-standard network convergence.

Abstract: Embodiments of the present invention provide a method and an apparatus for transmitting an acknowledgement frame in a wireless local area network. The method includes: generating an acknowledgement frame for a send frame, where the acknowledgement frame includes a short acknowledgement frame, and the short acknowledgement frame includes an STF, an LTF, and a SIG; and sending the acknowledgement frame. In the embodiments of the present invention, the short acknowledgement frame may not include a data unit, so that a size of the acknowledgement frame is reduced and an overhead of the acknowledgement frame is cut down, thereby improving interaction efficiency of the acknowledgement frame.

Abstract: The present invention discloses a method for transmitting data between a baseband processing unit BBU and a remote radio unit RRU, and a data transmission apparatus. The RRU selects partial data in received data, and sends the partial data to the BBU by using a common public interface CPRI; or the BBU performs only channel coding processing or only channel coding processing and constellation mapping processing on the data, and sends processed data to the RRU. Then the RRU performs constellation mapping processing, multiple-antenna multiple-input multiple-output MIMO coding processing, and orthogonal frequency division multiplexing OFDM symbol generation processing on the data, or the RRU performs MIMO coding processing and OFDM symbol generation processing on the data. That is, steps in which data redundancy is added are executed by the RRU.

Abstract: The present invention relates to the field of communications, and provides a link adaptation method and device, so as to determine, according to transmission quality of a signal in a link, to perform antenna alignment and/or frequency adjustment. The method includes: detecting, by a first antenna device, an RSSI of a link between the first antenna device and a second antenna device; when it is determined that the RSSI is greater than or equal to a first RSSI threshold, detecting, by the first antenna device, an SINR of the link; and choosing, by the first antenna device according to the RSSI and the SINR, to perform frequency adjustment and/or antenna alignment with the second antenna device. Embodiments of the present invention are applied to link adaptation.

Abstract: The present invention provides a security identity discovery method, through hiding or omitting MAC addresses of the first station and a second station in a frame for identity discovery between the two stations, adopting identity codes to identify the identities of the two stations and authenticating the identities by using a ciphertext, improves the degree of privacy protection during identity discovery of the stations.

Abstract: The present invention discloses a multi-standard network convergence method, device, and system and relates to the field of communications technologies. The method includes: acquiring an AC mapping parameter corresponding to an RLC packet; performing encapsulation on the AC mapping parameter and the RLC packet; and forwarding an encapsulated packet to a second network, so that the second network acquires a corresponding AC according to the AC mapping parameter in the encapsulated packet, and places the RLC packet into a transmission queue corresponding to the AC for transmission. According to the present invention, an AC mapping parameter and an RLC packet are encapsulated and then sent to a second network, so that the second network may determine a corresponding AC according to the AC mapping parameter, so as to accurately place the RLC packet into a corresponding transmission queue for transmission and further implement multi-standard network convergence.

Abstract: The present invention provides a security identity discovery method, through hiding or omitting MAC addresses of the first station and a second station in a frame for identity discovery between the two stations, adopting identity codes to identify the identities of the two stations and authenticating the identities by using a ciphertext, improves the degree of privacy protection during identity discovery of the stations.

Abstract: Embodiments of the present invention provide a method and an apparatus for transmitting an acknowledgement frame in a wireless local area network. The method includes: generating an acknowledgement frame for a send frame, where the acknowledgement frame includes a short acknowledgement frame, and the short acknowledgement frame includes an STF, an LTF, and a SIG; and sending the acknowledgement frame. In the embodiments of the present invention, the short acknowledgement frame may not include a data unit, so that a size of the acknowledgement frame is reduced and an overhead of the acknowledgement frame is cut down, thereby improving interaction efficiency of the acknowledgement frame.

Abstract: Embodiments of the present invention provide a method and an apparatus for sending a non-data frame. The method for sending a non-data frame includes: determining an access category for which a transmission opportunity of a shared medium has been obtained, where the obtained transmission opportunity of the shared medium is obtained for the access category through contention according to an enhanced distributed channel access mechanism; and sending a non-data frame according to the access category for which the transmission opportunity of the shared medium has been obtained. In this way, different quality-of-service requirements of a non-data frame and a data frame are met while fairness is considered, thereby avoiding that a management and control message is not sent in time because a non-data frame and a data frame are transmitted according to a same access category.

Abstract: A data feedback method includes acquiring, by the beamformee, the number of columns from the NDPA message; detecting the number of active first spatial streams; comparing the number of first spatial streams with the number of columns, and taking the smaller value obtained from the comparison as the number of second spatial streams required for feedback; and feeding back the number of second spatial streams and spatial stream measurement information about the second spatial streams to the beamformer.

Abstract: A method for transmitting information by using Cyclic Prefix (CP) timeslots includes a transmitter transmitting CP information at a portion of CP timeslots when transmitting the timeslots or transmitting no CP information at CP timeslots when transmitting the CP timeslots. A method for using CP timeslots effectively and an apparatus for using CP timeslots are also disclosed.

Abstract: A method and system for transmitting messages over an F-SCCH in wireless communication field are disclosed. The method includes the following steps: acquiring a transmission type according to a negotiation between a terminal and a network during a link initialization; configuring a bit number occupied by a message type of messages of the F-SCCH; communicating, by the network, messages with the terminal according to the configured bit number of the message type based on the determined transmission type. With the present invention, redundancy of channel configuration may be decreased, channel configuration of the conventional art is simplified, hence reducing resource occupancy and improving resource utilization of channels.