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Method for transmitting uplink detection signal in multi-input and multi-output system

A detection signal and multi-output technology, applied in diversity/multi-antenna systems, access restrictions, wireless communication, etc., can solve problems such as inability to provide uplink sounding signals

Active Publication Date: 2010-06-30
XIAOMI INC
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  • Abstract
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Problems solved by technology

[0010] For the latter method, no specific scheme for sending the uplink sounding signal has been proposed in the prior art. Therefore, in fact, the prior art cannot provide the required uplink sounding signal for estimating the complete channel matrix H

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  • Method for transmitting uplink detection signal in multi-input and multi-output system
  • Method for transmitting uplink detection signal in multi-input and multi-output system

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Embodiment Construction

[0020] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments.

[0021] figure 1 It is the flow chart of the method for sending uplink sounding signal in MIMO system provided by the present invention, such as figure 1 As shown, the method includes:

[0022] Step 101: The UE receives the scheduling message of the Node B, and if it receives the scheduling message, executes step 102; otherwise, continues to execute step 101.

[0023] Step 102: Determine whether the complete channel matrix H needs to be estimated according to the pre-configured condition parameters of the network side that need to estimate the complete channel matrix H, if yes, perform step 103; otherwise, return to step 101.

[0024] In this step, the UE may determine whether the complete channel matrix H needs to be estimated according to the condition...

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Abstract

The embodiment of the invention discloses a method for sending an uplink detection signal in a multi-input and multi-output system, which comprises the following steps: allocating a conditional parameter for a complete channel matrix H to be estimated and a signal transmission parameter for a terminal UE transmitting an uplink detection sounding signal to a base station Node B at the network side; and when the complete channel matrix H to be estimated is determined according to the conditional parameter and when the UE receives the dispatching message from the base station Node B, the uplink detection sounding signal is respectively transmitted to the Node B according the signal transmission parameter by various antennas of the UE. The invention can be used to provide the uplink detection sounding signal for estimating the complete channel matrix H.

Description

Technical field [0001] The present invention relates to the technical field of channel estimation of communication systems, and in particular to a method for transmitting uplink sounding (sounding) signals in a Multiple Input Multiple Output (MIMO) system. Background technique [0002] In future communication systems such as the High Speed ​​Packet Access Plus (HSPA+) system and the Long Term Evolution (LTE) system, in order to further increase the data transmission rate and channel capacity, MIMO technology is introduced, that is, The base station and the terminal simultaneously transmit multiple data streams or receive multiple data streams. A communication system using MIMO technology is called a MIMO system. [0003] Many MIMO systems are also Time Division Duplex (TDD) systems. The uplink and downlink channels of the TDD system can be used mutually, that is, the uplink and downlink channels have the same characteristics, and the characteristics of the uplink channel can be u...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W24/08H04W48/12H04B7/06
Inventor 杨宇李晓卡
Owner XIAOMI INC
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