Huawei Technologies Co., Limited

Dai Shi

Lei Lu

Gang Huang

Wenting Guo

Wenliang Liang

Huilian Yang

An information transmission method includes: modulating, by a terminal device, encoded hybrid automatic repeat request (HARQ) information according to a codebook, to generate HARQ modulation symbols, where the HARQ modulation symbols include at least one non-zero HARQ modulation symbol and at least one zero HARQ modulation symbol, the codebook includes at least two code words, the code words are multi-dimensional complex vectors, and the code words are used to indicate a mapping relationship between a bit and at least two modulation symbols; and sending the HARQ modulation symbols to a network device.

Hybrid automatic repeat request (HARQ) information transmission method and apparatus

A method for determining a modulation and coding scheme is disclosed. The method is performed by a network device. The method includes: determining a quantity K of terminal devices that reuse a first time-frequency resource in a first time period to receive downlink data from the network device, where K&#x2265;2; obtaining a channel quality indicator (CQI), where the CQI is determined according to a signal to interference plus noise ratio (SINR) of a channel and the quantity K of the terminal devices, where the channel is a channel based on the first time-frequency resource, and the channel is used to transmit downlink data between a first terminal device and the network device in the first time period; and determining a Modulation and Coding scheme (MCS) of the first terminal device according to the CQI.

Method, apparatus, and device for determining modulation and coding order

Embodiments of the present invention provide a data read/write method and apparatus, a storage device, and a computer system, so as to reduce completion time of a data read/write operation in a multi-core computer system. The method includes: determining, by a host device, N cores used for executing a target process, where the N cores are in a one-to-one correspondence with N execution threads included in the target process; grouping the N execution threads to determine M execution thread groups, and allocating an indication identifier to each execution thread group; and sending M data read/write instructions to a storage device, where each data read/write instruction includes an indication identifier of a corresponding execution thread group.

Data read/write method and apparatus, storage device, and computer system

A method for scheduling a terminal device comprises performing blind detection on N subframes by using at least one codebook and a pilot corresponding to the codebook, and determining, according to a blind detection result, a first pilot set corresponding to each codebook in each subframe, where correct terminal data cannot be obtained by performing blind detection by using a pilot in the first pilot set and a corresponding codebook. The method comprises determining, according to the first pilot set corresponding to each codebook, a second pilot set corresponding to each codebook, where a pilot in the second pilot set is a pilot that is in the first pilot set and that has already been sent by the terminal device, and determining a to-be-used transmission mode according to the second pilot set corresponding to each codebook in each subframe, where different transmission modes correspond to different spectrum multiplex rates.

Method for scheduling terminal device, and network device

Embodiments relate to a data transmission method. A relay node receives information that is about an SCMA codebook used by the relay node and that is sent by a destination node. The relay node receives two or more source signals sent by two or more source nodes. The relay node performs network coding on the received two or more source signals. The relay node performs SCMA codebook mapping on a signal obtained after the network coding, so as to obtain at least two modulation symbols. The relay node sends to the destination node, the at least two modulation symbols obtained after the SCMA mapping.

Data transmission method and device

Embodiments of the present invention provide a data transmission method and apparatus. ROHC packets that use a same Context ID are encapsulated into MAC PDU, wherein the MAC PDU is formed by a MAC PDU packet header and a MAC PDU payload. The Context ID of the ROHC packets is carried in the MAC PDU packet header, and the Context ID is not carried in the ROHC packets. The MAC PDU is sent. In this way, transmission resources are saved, and transmission efficiency is improved.

Data transmission method and apparatus

A method for transmitting a header-compressed packet based on a retransmission mechanism is disclosed according to the present disclosure. The method mainly includes: a header compressor of a sending device obtains feedback information of a header-compressed packet in a transmission process; and the header compressor determines a state of the header compressor according to the feedback information, compresses a header for the packet according to the state of the header compressor, and sends the packet to a decompressor of a receiving device. According to the present disclosure, a header compression mechanism is combined with an automatic retransmission mechanism, so that the header compressor obtains feedback information of an automatic retransmission technology, and estimates the decompression information of the decompressor correctly, so as to change a state machine of the header compressor at proper time and improve transmission efficiency of the packet.

Growing community of inventors

Shanghai, China

Dai Shi