Huawei Technologies Co., Limited

Lixue Zhang

Chunshan Xiong

Xiaolong Guo

Xin Xiong

Yue Li

Zhenxing Hu

Song Zhu

Weiwei Song

Zhenwei Lu

Weihua Liu

De Chen

The present invention provides a downlink data transmission method, base station, and serving gateway on an LTE network. The method includes: learning, by an eNB, that a UE needs to be paged, when an S1 bearer is retained and a radio bearer is released; paging, by the eNB, the UE and re-establishing a radio bearer between the eNB and the UE; and sending, by the eNB, downlink data, which is received from an S-GW, to the UE through the re-established radio bearer. Embodiments of the present invention can ensure correct transmission of downlink data, and avoid data loss.

Downlink data transmission method, base station, and serving gateway on LTE network

In an embodiment, a video stream synchronization request is sent to a network side device; a video stream playback position synchronization parameter sent by the network side device is received, where the video stream playback position synchronization parameter includes a playback position parameter at a video stream sending moment and a system frame number (SFN) at the video stream sending moment; an SFN at a video stream receiving moment is acquired; and the playback position parameter at the video stream sending moment is adjusted according to the SFN at the video stream sending moment and the SFN at the video stream receiving moment, so as to coincide with a current playback position parameter of the network side device.

Method and apparatus for synchronizing video live broadcast

A network device and UE determine that the UE is handed over from a first network device to a second network device, and in a handover process, the first network device or the second network device sends a feedback control message to the UE to query for a quantity of fountain codes that are needed to continue to send, and the second network device continues to perform encoding according to the quantity of fountain codes that are needed to continue to send, and sends encoded data to the UE. In an uplink process, the UE sends a feedback control to the second network device and obtains a quantity of data packets that are needed to continue to encode, and sends a first data packet to the second network device. A receive end performs decoding according to the received first data packet to obtain an original data packet.

Method and apparatus for data transmission

The present invention discloses a method and an apparatus for transmitting streaming media data and relates to the field of multimedia communication technologies. The method includes: receiving a data request sent by a user equipment UE, where the data request is used to request a media presentation description MPD file from a streaming media server; if the UE does not support a dynamic adaptive steaming over the Hypertext Transfer Protocol HTTP DASH technology, forwarding the data request to the streaming media server, and receiving the requested MPD file that is delivered by the streaming media server according to the data request; and acquiring DASH streaming media data from the streaming media server according to the MPD file, and sending the DASH streaming media data to the UE, where a rate at which the DASH streaming media data is transmitted matches a bit rate selected from the MPD file.

Method and apparatus for transmitting streaming media data

The present invention relates to a method for synchronizing video live broadcast. In the present invention, a video stream synchronization request is sent to a network side device; a video stream playback position synchronization parameter sent by the network side device is received, where the video stream playback position synchronization parameter includes a playback position parameter at a video stream sending moment and a system frame number SFN at the video stream sending moment; an SFN at a video stream receiving moment is acquired; and the playback position parameter at the video stream sending moment is adjusted according to the SFN at the video stream sending moment and the SFN at the video stream receiving moment, so as to coincide with a current playback position parameter of the network side device.

The present invention discloses a method. In a process of splitting and sending a data packet, after dividing a data packet to be sent to a destination node into multiple sub data packets, a front end node performs inter-packet combination encoding on the sub data packets in a combination encoding mode, and sends obtained encoded sub data packet groups to the destination node. Even if a channel state of a transmission path suddenly deteriorates, because the destination node does not need to wait to receive all encoded sub data packet groups provided that an original data packet can be parsed out by combining content in a received encoded sub data packet group and a corresponding decoding mode, a process in which the destination node receives the data packet is less affected by a sudden network case, and transmission efficiency is not significantly affected.

Data packet transmission method and transmission device

Embodiments of the present invention provide a data transmission method and system, and a proxy device. The transmission method includes: establishing a TCP connection between a client and an Internet server, where a proxy device interacts with the client in a wireless manner, and the proxy device interacts with the Internet server in a wired manner; and obtaining, by the proxy device, a start serial number and a reply serial number in a corresponding direction and completing data forwarding between the client and the Internet server based on this without respectively establishing an independent TCP connection with the client or the Internet server, so that the quality of service of a wireless network is not affected.

Data transmission method and system, and proxy device

The present invention provides a processing method for a radio link failure, a small cell and a mobile communication system. The method includes: determining, by a small cell, whether or not a signaling radio bearer transmission connection between a user equipment and a macro base station is interrupted; receiving, if the signaling radio bearer transmission connection is interrupted, signaling radio bearer configuration parameters sent by the macro base station, wherein the signaling radio bearer configuration parameters comprise an SRB identification, a radio link control layer configuration and a logic channel configuration; establishing a signaling radio bearer for the user equipment according to the signaling radio bearer configuration parameters; and notifying the user equipment to hand over the signaling radio bearer transmission connection to the signaling radio bearer established by the small cell. In the present invention, service interruption time of the UE is reduced and continuity of service is guaranteed.

Processing method for radio link failure, small cell and mobile communication system

The present invention relates to a data pushing method, apparatus, and system. The data pushing method includes: sending a query request for a camp-on state of a mobile terminal to a gateway; receiving reply information that is about the camp-on state of the mobile terminal and returned by the gateway; determining, according to the camp-on state of the mobile terminal, a data volume of cached content to be pushed; and sending a pushing instruction to a main cache; sending the first pushing instruction to the main cache if the mobile terminal is in a first camp-on state; and sending the second pushing instruction to the main cache if the mobile terminal is in a second camp-on state, so as to control the main cache to push a second data volume of data of the cached content to the mobile terminal.

Data pushing method, apparatus, and system

The present invention relates to a method for synchronizing video live broadcast, which can improve user experience in a video live broadcast service. In the present invention, a video stream synchronization request is sent to a network side device; a video stream playback position synchronization parameter sent by the network side device is received, where the video stream playback position synchronization parameter includes a playback position parameter at a video stream sending moment and a system frame number SFN at the video stream sending moment; an SFN at a video stream receiving moment is acquired; and the playback position parameter at the video stream sending moment is adjusted according to the SFN at the video stream sending moment and the SFN at the video stream receiving moment, so as to coincide with a current playback position parameter of the network side device.

The present invention provides a method for sending vehicle broadcast information broadcasts a message of first vehicle information at a first resource location of each cycle, where the message of the first vehicle information includes at least driving information of a vehicle that carries first UE; detects, at a second resource location of each cycle, a message of second vehicle information sent by second UE, where the message of the second vehicle information includes at least driving information and a first collision identifier that are of a vehicle that carries the second UE, and the first collision identifier is used to indicate that colliding interference exists at the first resource location of the first UE in each cycle.

Apparatus and method for sending vehicle broadcast information

A data transmission method is disclosed. N streams of video data uploaded by a video capture terminal are received, where N is an integer greater than or equal to 1; loopback indication information sent by a mobility management entity or the video capture terminal is received, where the loopback indication information carries an identifier of a bearer of video data to be looped back; according to the identifier of the bearer of the video data to be looped back, the video data to be looped back corresponding to the identifier of the bearer of the video data to be looped back is confirmed; and the video data to be looped back is sent to a trunking terminal. In the data transmission method, data that the trunking terminal needs to monitor is directly looped back at the base station.

Data transmission method, device, and system

A UE paging method, a base station, and a UE are disclosed. The method includes receiving, by the base station, a paging message that is used for paging the UE and delivered by a core network side, where the paging message includes an eDRX cycle that serves as a first parameter, and a second parameter used for identifying a quantity of super frames for which a normal state lasts in the eDRX cycle; calculating, by the base station according to a UE identifier of the UE, the first parameter, and the second parameter, a super frame used for paging the UE; and if it is determined that a current super frame matches with the super frame used for paging the UE, that is, the current super frame is in a normal state, delivering, by the base station, the paging message to the UE in the current super frame.

UE paging method, base station, and UE

Embodiments of the present invention disclose a method for multiple users cooperative communication. The method provided in the embodiments of the present invention includes: acquiring, by a core network node, information about MUCC capability identifiers of at least two UEs, where the MUCC capability identifiers are used to identify MUCC capabilities of the UEs; and sending, by the core network node, the information about the MUCC capability identifier of the at least two UEs to a radio access network node, to enable the radio access network node to select, according to the capability identifiers of the UEs, a UE having a supporting capability of the MUCC capability and a UE having a benefited capability of the MUCC capability, so that the UE having a supporting capability supports, in MUCC communication, a bearer of the UE having a benefited capability.

Method, device, and system for multiple users cooperative communication

A data transmission method receiving a group identifier, a configuration information window length, and an offset between a start point of the configuration information window length and a paging occasion that are sent by a mobility management entity; establishing a public data radio bearer to a terminal corresponding to the group identifier; scrambling configuration information of the public data radio bearer by using a radio network temporary identifier; sending a paging message carrying the group identifier and the radio network temporary identifier to the terminal; sending the scrambled configuration information of the public data radio bearer to the terminal in the configuration information window length; and receiving uplink data transmitted by the terminal on the public data radio bearer.

Growing community of inventors

Beijing, China

Lixue Zhang