Huawei Technologies Co., Limited

Suzhou Harmontronics Automation Technology Co. Ltd.

Hongjian Yang

Lei Guan

Jiafeng Shao

Bingzhao Li

Ruixiang Ma

Jinhuan Xia

Xuefeng Zhu

Jiadan Li

Junchen Li

Fengjie Zheng

A network device determines downlink bandwidth configuration information corresponding to a terminal device; the network device sends a first physical broadcast channel to the terminal device in a plurality of cell acquisition subframes based on the downlink bandwidth configuration information, where a time interval between every two adjacent cell acquisition subframes in the plurality of cell acquisition subframes is greater than or equal to 30 ms. When a bandwidth configuration value corresponding to the downlink bandwidth configuration information is greater than or equal to a first threshold, the plurality of cell acquisition subframes in which the first physical broadcast channel is sent include at least one first cell acquisition subframe. At least five symbols of the first physical broadcast channel are transmitted in the first cell acquisition subframe.

Physical broadcast channel transmission method and related apparatus

The present disclosure relates to transport block size (TBS) determining methods and apparatus. One example TBS determining method includes determining a second intermediate variable based on a determined TBS index, a frequency domain resource occupied by a first broadcast channel, and a second table, and determining a TBS based on the second intermediate variable and a scale factor, where the scale factor is greater than 1.

Method and apparatus for determining a transport block size (TBS)

Embodiments of this application provide a communication method and an apparatus, relate to the communication field, and in particular, are applicable to a broadcast system. The method includes: A terminal device receives a first downlink channel from an access network device, where the first downlink channel is scrambled by using a first identifier and is used to carry first data. The terminal device receives a second downlink channel from the access network device, where the second downlink channel is scrambled by using a second identifier and is used to retransmit the first data. The first identifier and the second identifier are identifiers configured by the access network device. This method can implement a feedback retransmission mechanism combining broadcast initial transmission and partial retransmission, to further improve spectral efficiency of a communication system.

Communication method and apparatus

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Beijing, China

Hongjian Yang