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Method for realizing multiuser multiple-input multiple-output (MIMO) in time division duplex (TDD) system and equipment thereof

A time-division duplex system and multi-user technology, applied in diversity/multi-antenna systems, space transmit diversity, electrical components, etc., can solve problems such as no MU-MIMO solution

Active Publication Date: 2010-03-10
北京万海云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, since the MU-MIMO technology has not been introduced into the 1.8Mcps TDD system, there is no solution for introducing the MU-MIMO technology into the 1.8Mcps TDD system.

Method used

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  • Method for realizing multiuser multiple-input multiple-output (MIMO) in time division duplex (TDD) system and equipment thereof
  • Method for realizing multiuser multiple-input multiple-output (MIMO) in time division duplex (TDD) system and equipment thereof
  • Method for realizing multiuser multiple-input multiple-output (MIMO) in time division duplex (TDD) system and equipment thereof

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Embodiment Construction

[0073] In the present invention, a specific implementation scheme for introducing MU-MIMO technology into a TDD system is mainly given.

[0074] Figure 4 It is a schematic diagram of the spatial structure when the MU-MIMO technology is applied to the downlink transmission of the 1.28Mcps TDD system in the embodiment of the present invention. Figure 5 yes Figure 4 The flow chart of the downlink transmission process is shown. see Figure 4 , according to the uplink channel estimation results of each user in the cell, Node B divides n UEs that meet certain conditions between channels into a group, and the downlink transmission process is as follows Figure 5 shown, including the following steps:

[0075] Step 501, Node B notifies n UEs in the group of downlink service data including time slot code channel resource, modulation mode and transport block size through the high-speed shared control channel HS-SCCH; wherein, the n UEs in the group Multiplexing the same time slot...

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Abstract

The invention discloses a method for realizing multiuser multiple-input multiple-output (MIMO) in a time division duplex (TDD) system and equipment thereof. The method comprises the steps: a base station Node B divides n users in a subdistrict into one group; the Node B informs the information of time slot code channel resource, modulation mode and transmission block size to n UEs in the group byHS-SCCH; the n UEs in the group repeatedly use the same time slot code channel resource; the Node B shapes on corresponding time slot code channels of n HS-PDSCHs by wave beam and transmits n servicedata streams; at the corresponding time slot code channel position of the HS-PDSCHs, the each UE in the group receives corresponding service data stream, estimates the channel with a midamble shift sequence corresponding to the code channels, demodulates the received service data and removes interference by a channel estimating result, and feeds back corresponding information to the Node B by an uplink feedback channel HS-SIC. The technical scheme of the method provides a solution for inducing a MU-MIMO technology into a 1.8 Mcps TDD system.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and equipment for realizing multi-user multi-input and multi-output in a time division duplex system. Background technique [0002] Multiple User Multiple Input Multiple Output (MU-MIMO, Multiple User Multiple Input Multiple Output) technology utilizes space division among different users to form different channels, so that users meeting certain channel conditions can multiplex the same physical resources. If the MU-MIMO technology is introduced into the uplink or downlink transmission of a 1.28Mcps Time Division Dual (TDD) system, the cell capacity can be improved. The following briefly introduces the uplink or downlink transmission process of the existing 1.28McpsTDD system. [0003] figure 1 It is a schematic diagram of the sending and receiving process of the high-speed downlink packet access system in the existing 3GPP Rel.71.28Mcps TDD standard. S...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/14H04B7/06
Inventor 杨薇白杰常永宏赵训威
Owner 北京万海云科技有限公司
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