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Methods, devices and systems for broadcasting precoding matrix set and feeding back precoding matrix

A precoding matrix and indexing technology, which is applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve the problems of increasing signaling overhead, information broadcast users without precoding matrix sets, etc., to save the number of bits and save the network resource effect

Active Publication Date: 2009-09-30
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology

[0006] The inventor found the following problems in the process of implementing the present invention: in the prior art, the index is fed back by adding new signaling, which will undoubtedly increase the signaling overhead, and the precoding matrix is ​​not clearly defined in the prior art The method of broadcasting the information of the set to the user

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  • Methods, devices and systems for broadcasting precoding matrix set and feeding back precoding matrix
  • Methods, devices and systems for broadcasting precoding matrix set and feeding back precoding matrix
  • Methods, devices and systems for broadcasting precoding matrix set and feeding back precoding matrix

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Embodiment Construction

[0033] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0034] figure 1 This is a flowchart of an embodiment of a method for broadcasting a precoding matrix set according to the present invention, and this embodiment includes:

[0035] Step 11: The base station adds the information of the precoding matrix set to the superframe preamble, such as QuickChannelInfo, or overhead messages, such as SectorParameter, ExtendedChannelInfo, or data The user indication message (MACID) of the channel (for example, F-SCCH), or any combination of the superframe preamble, overhead message, and user indication message of the data channel.

[0036]The information of the precoding matrix set is released by the base station. The base station uses a certain time interval as a unit and selects some precoding matrices from the entire preset precoding matrix set N according to a certain rule to form a candidat...

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Abstract

The invention discloses methods, devices and systems for broadcasting a precoding matrix set and feeding back a precoding matrix. The method for broadcasting a precoding matrix set comprises the step of sending the information of the precoding matrix set to a terminal through a superframe precursor, or / and overhead information, or / and user indication information of a data channel. The method for feeding back a precoding matrix comprises the steps of confirming an optimal precoding matrix in the precoding matrix set, packing the index of the optimal precoding matrix and a feedback signal and feeding back a signal packet, wherein the packet head value of the signal packet is used for showing the combination of the feedback signal and the bit number occupied by the index. The device for broadcasting a precoding matrix set and the device for feeding back a precoding matrix comprise modules for realizing the corresponding functions in the methods; and the systems for broadcasting a precoding matrix set and feeding back a precoding matrix comprise corresponding base station equipment and terminal equipment. The performance of the systems can be improved and the single overhead can be saved due to the embodiment of the invention.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a method, device and system for broadcasting a precoding matrix set and feeding back a precoding matrix. Background technique [0002] In order to support the transmission of multi-user high-speed data and multimedia services in wireless communication, it is necessary to efficiently and comprehensively utilize the system's various resources such as space, time, frequency, and power, so that the system has a larger user capacity, a higher transmission rate and reliability. Multiple Input Multiple Output (MIMO) technology was born under this demand. It can effectively increase the user capacity of the system, has better diversity performance, and has good interference suppression. Performance, has been widely used in the next generation of mobile communication systems. [0003] MIMO technology refers to the use of multiple transmitting antennas and receiving ante...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08
Inventor 杜颖刚邓敏智李鹏夏林峰沈晖许明霞
Owner XFUSION DIGITAL TECH CO LTD
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