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Sending and receiving method, base station and terminal for synchronous wave beam forming signals

A beamforming and transmission method technology, applied in the field of high-frequency communication, can solve the problems of selection and normal communication, the inability of the base station and the terminal to perform beamforming weights, and the inability of the base station and the terminal to reach.

Inactive Publication Date: 2015-06-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the main purpose of the present invention is to provide a method for transmitting and receiving synchronous beamforming signals, a base station and a terminal, so as to solve the problem that the base station and the terminal cannot achieve the same coverage in the high-frequency communication system. Selection of Weighted Values ​​and Problems of Normal Communication

Method used

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  • Sending and receiving method, base station and terminal for synchronous wave beam forming signals
  • Sending and receiving method, base station and terminal for synchronous wave beam forming signals
  • Sending and receiving method, base station and terminal for synchronous wave beam forming signals

Examples

Experimental program
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Effect test

Embodiment 1

[0071] The base station periodically sends synchronous beamforming signals on predefined time-frequency resources, and divides the sequence of the synchronous beamforming signals into M beam groups, each of which includes N m (The value of m is 1~M) sequences. The beam group index (inter-group index) is used to indicate the cell identity, and the sequence index (intra-group index) in the beam group is used to indicate the beam index in the cell, then M beam groups and each group N m The sequence constitutes a total of sequences (M is a positive integer). According to the number M of beam groups, the inter-group index can be set to 1, 2...M, or 0, 1...M-1; according to the number N of sequences in each beam group m , you can set the index within the group to 1, 2...N m , can also be set to 0, 1...N m -1, such as the structures shown in Table 1-1 and Table 1-2.

[0072]

[0073] Table 1-1

[0074]

[0075] Table 1-2

[0076] The above two setting modes of the inter...

Embodiment 1-1

[0080] Such as figure 1 As shown in , it is assumed that the base station periodically transmits a synchronous beamforming signal within a predefined time unit. The sequence of the synchronous beamforming signal is divided into 63 beam groups, and each beam group includes 8 sequences, the inter-group sequence index is used to indicate the cell identity, and the intra-group sequence index is used to indicate the beam index in the cell. Groups and 8 sequences per group constitute a total of 504 sequences.

[0081] The terminal detects the sequence of the synchronous beamforming signal sent by the base station. When the terminal detects the optimal sequence, the terminal detects the corresponding inter-group index and intra-group index, thereby identifying the corresponding cell ID and beam index. After obtaining the beam index, the terminal directly or indirectly feeds back the beam index through the uplink. After obtaining the beam index fed back by the terminal, the base sta...

Embodiment 1-2

[0084] Such as figure 1 As shown in , it is assumed that the base station periodically transmits a synchronous beamforming signal within a predefined time unit. The sequence of the synchronous beamforming signal is divided into 14 beam groups, and each beam group includes 36 sequences. The inter-group sequence index is used to indicate the cell identity, and the intra-group sequence index is used to indicate the beam index in the cell. Groups and 36 sequences per group constitute a total of 504 sequences.

[0085] The terminal detects the sequence of the synchronous beamforming signal sent by the base station. When the terminal detects the optimal sequence, the terminal detects the corresponding inter-group index and intra-group index, thereby identifying the corresponding cell ID and beam index. After obtaining the beam index, the terminal directly or indirectly feeds back the beam index through the uplink. After obtaining the beam index fed back by the terminal, the base s...

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Abstract

Disclosed is a method for transmitting a synchronization beam forming signal. The method comprises: sending, by a base station, a synchronization beam forming signal to a terminal; selecting, by the terminal, an optimal beam from the received synchronization beam forming signal and feeding back optimal beam information to the base station; and using, by the base station, the optimal beam to send downlink data. Also disclosed are methods for sending and receiving a synchronization beam forming signal, a base station, a terminal and a transmission system.

Description

technical field [0001] The present invention relates to high-frequency communication technology, in particular to a method for sending and receiving synchronous beamforming signals, a base station and a terminal. Background technique [0002] The LTE communication system is required to cover an area of ​​up to 100km, and the high-frequency communication system can cover an area of ​​up to 1km. Considering the high air absorption (oxygen absorption, rain fading, fog fading) and sensitivity to shadow fading of the actual high-frequency carrier, the actual coverage area that the high-frequency communication system can support is less than 1km. If the high-frequency communication system supports a maximum coverage area of ​​1km, compared with the LTE communication system, the SINR (Signal to Interference plus Noise Ratio) obtained in the same coverage area is different, and the former is at least 20dB higher than the latter In order to ensure that the high-frequency communicati...

Claims

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Application Information

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IPC IPC(8): H04B7/06
CPCH04B7/0617
Inventor 郭森宝郁光辉鲁照华
Owner ZTE CORP
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