Zte Corporation

Changyin Sun

Huiying Fang

Zhaohua Lu

Bo Sun

Ke Yao

Ying Liu

Dengkui Zhu

Min Liu

Xiangyu Liu

Yanfeng Guan

Wenhuan Wang

Zirong Li

Ting Liang

Yunfeng Wang

A synchronization preamble transmission method, a synchronization method, a device and a system are disclosed in the disclosure. The method includes: transmitting synchronization preambles in a superframe, the synchronization preambles comprise one Primary Preamble (P-Preamble) and two Secondary-Preambles (S-Preambles), wherein the P-Preamble carries system bandwidth information and the S-Preambles carry cell/sector Identification (ID) information. The disclosure reaches the effect of reducing the overhead of Synchronization Channel (SCH) on the basis of ensuring the performance of synchronization access.

Synchronization preamble transmission method, synchronization method, device and system

A method for mapping resources of broadcast control channel is disclosed. Available subcarriers of a subframe in which the broadcast control channel is located are divided into three subcarrier sets, each of which is mapped to be one frequency partition, so that the subframe in which the broadcast control channel is located includes N frequency partitions, and resources of each frequency partition are mapped to be logical resource units, wherein N can be 1 or 3. With this method, subcarrier sets of the broadcast control channel are divided, and the resources of the broadcast control channel are mapped.

Method for mapping resources of broadcast control channel

A method for sending a middle pilot is disclosed. The sending method comprises: selecting a middle pilot sequence set; creating a middle pilot subcarrier union; mapping by a base station a middle pilot sequence in the middle pilot sequence set after modulation through an OFDMA or OFDM symbol for transmitting the middle pilot onto a middle pilot subcarrier in a middle pilot subcarrier union corresponding to each transmission antenna, or, mapping by a base station a middle pilot sequence in the middle pilot sequence set through an OFDMA or OFDM symbol for transmitting the middle pilot onto a middle pilot subcarrier in a middle pilot subcarrier union corresponding to each transmission antenna and then performing modulation on the data at the subcarrier. By way of the present invention, the sending of middle pilot sequences is achieved, and the method reduces the periodicity of pilot symbols in the frequency domain and improves downlink performance of user data.

Method for sending a middle pilot

The present invention provides a method for configuring a preamble and a method for searching a cell, wherein the method for configuring a preamble comprises: configuring a preamble as comprising a first reference preamble and a second reference preamble, wherein the first reference preamble and the second reference permeable are located in different OFDM symbols. By means of the technical solution of the present invention, accessing solution between the fourth-generation communication system with the third-generation communication system based on the OFDM technology can be realized and the accessing time is shortened.

Method for configuring a preamble and a method for searching a cell

A method for uplink burst equalization in broad wide access system, using the form of combining pre-training and burst equalization, that is, before transmitting user data, training the equalizer, then starting transmitting user data, in which, the equalizer uses decision user data as reference to track the changed wireless channel; if the change of channel exceeds the tracking region of equalizer, for example, the error rate exceeds thresholdbut doesn't exceed threshold, the burst equalization will be performed; if the channel change exceeds the equalization region of equalizer, for example, the error rate exceeds threshold, the training will be performed again. By using the form of combining pre-training and burst equalization, setting different thresholds for handoff, the present invention greatly prolongs the intervals of subsequent pre-training process, thereby reducing the times of pre-training and increasing the effective bandwidth; By introducing burst equalization process, the present invention also decreases the requirement of system on operation occasion (for example, the static channel or the interval of bursts should be short), thereby increasing the application occasions of product.

Uplink burst equalizing method in broad wide access system

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Shenzhen, China

Changyin Sun