Huawei Technologies Co., Limited

Jingxin Wei

Qian Zhang

Chao Li

Neng Wang

Bengt Lindoff

Wenquan Hu

Qinghai Zeng

Hongping Zhang

Jun Luo

Junwei Wang

Shulan Feng

Jun Zhu

Lei Han

Dengkun Xiao

Qiong Jia

Tong Wu

Kun Feng

Weiwei Fan

Lili Zheng

Yunbao Zeng

Jia Liu

Changguo Jiang

Embodiments of this application provide a synchronization signal/physical broadcast channel block (SSB) measurement method and an apparatus. One example method includes that a terminal device receives first information and second information. The first information indicates a time domain position of an SSB sent by a serving cell, and the second information indicates a set of SSBs that the terminal device needs to measure and that are sent by a neighboring cell. The terminal device measures, in a first measurement window based on the first information, the SSB sent by the serving cell. The terminal device measures, in a second measurement window based on the second information, the SSB sent by the neighboring cell.

SSB measurement method and apparatus

A method includes selecting N cells waiting to be camped on from a candidate cell list, decoding a Physical Broadcast Channel (PBCH) of each of the selected N cells waiting to be camped on, selecting, from at least one cell whose PBCH is successfully decoded, one cell as a cell continuing waiting to be camped on, and when a remaining minimum system information (RMSI) decoding result of the cell continuing waiting to be camped on indicates that the cell continuing waiting to be camped on meets a camping criterion, determining the cell continuing waiting to be camped on as the cell to be camped on.

Method and apparatus for selecting cell to be camped on

The disclosure relates to performing phase compensation at a transmitter. A processing device for a network access node generates a phase compensated modulation symbol based on at least one first modulation symbol and at least on one of a frequency offset parameter and a time offset parameter. The frequency offset parameter may be determined based on an offset between a reference frequency f0 and a DC (0 Hz) frequency such that the frequency offset parameter corresponds to the reference frequency f0. Also, the reference frequency f0 can be at least partly based on the carrier of up-conversion frequency used by the processing device and the reference frequency f0 can be the carrier for up-conversion frequency. The phase compensated symbol is transmitted to a receiver, such as a client device. Furthermore, the disclosure also relates to corresponding methods and a computer program.

Processing device for a network access node for generating phase compensated modulation symbols

A method includes: determining first indication information, where the first indication information indicates a resource location of a second synchronization signal block, and the second synchronization signal block is associated with control information; and sending a first synchronization signal block, where a physical broadcast channel in the first synchronization signal block carries the first indication information.

Communication method and communications device

This application provides a transmission method and a transmission apparatus, so that a receive end can correctly demodulate data. A transmission method may include performing a phase compensation operation of a corresponding frequency value on each of m first signals in k signals, to obtain m second signals, where each of the m first signals is located at a non-center frequency of a current carrier, each first signal is a synchronization signal or data, m and k each are a positive integer, and m&#x2264;k. The method may also include performing sending processing on the m second signals.

Transmission method and transmission apparatus

An interference cancellation method, data sending method, apparatus, user equipment and base station in a Long Term Evolution system are disclosed. The interference cancellation method includes: obtaining downlink cell-specific power ratio information of a specific cell; performing channel estimation based on a downlink cell-specific reference signal (CRS) of the specific cell, to obtain a channel estimation matrix of a specific physical channel, signal, or message of the specific cell; compensating the channel estimation matrix by using the downlink cell-specific power ratio information; and canceling, in an original signal that is received from a target cell and is interfered by the specific cell, interference caused by the specific cell in a received signal from a specific physical channel, signal, or message. A technical problem in the prior art that a user equipment cannot effectively cancel interference because power transmission strength of a strong interfering cell cannot be correctly estimated is solved.

Interference cancellation method, data sending method, and apparatuses in long term evolution system

Embodiments of the present invention provide a method and terminal for a cell search that are related to the communications field. The terminal includes: two spaces, a first processing module, a first processing unit, and a second processing unit. The present invention can ensure that a cell search result exists in each time unit, thereby accelerating an initial search and shortening an initial search delay.

Method and terminal for cell search

A method and a device for determining channel feedback information in a Long Term Evolution (LTE) system are provided. The method includes: obtaining an (N&#x2212;1)layer interference-plus-noise matrix in an LTE system, and obtaining an Nlayer interference-plus-noise matrix according to the (N&#x2212;1)layer interference-plus-noise matrix; and then, calculating a Signal to Interference plus Noise Ratio (SINR) corresponding to the Nlayer interference-plus-noise matrix according to the Nlayer interference-plus-noise matrix, and determining channel feedback information according to the SINR. It can be seen that, in the embodiments of the present invention, in a processing manner, a current layer interference-plus-noise matrix is calculated according to an obtained previous layer interference-plus-noise matrix through calculation in a calculation process of the channel feedback information, thus effectively reducing the calculation amount in the calculation process of the channel feedback information.

Method and device for determining channel feedback information in LTE system

A tail-biting decoding method and device are provided, so as to improve accuracy of backtracking state determination and decrease decoding delay. The method includes the following steps. Survivor paths of a training system are acquired. The training system is formed of a first transport block and a second transport block connected in series. The number of the survivor paths passing through each first state of the second transport block is counted. A first state having a maximum number of the survivor paths may be selected as a backtracking state of the second transport block. Backtracking decoding is performed on the second transport block by using the survivor paths on the backtracking state, so as to obtain a decoding result.

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Beijing, China

Jingxin Wei