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Method and device for sending, transmitting and dispatching channel quality indication in time division duplex system

A technology of channel quality indication and time-division duplex system, applied in wireless communication, advanced technology, electrical components, etc., can solve the problems of high consumption of resources and power consumption, save resources and power consumption, facilitate implementation, and achieve remarkable results Effect

Active Publication Date: 2011-10-05
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The inventors of the present invention found that due to the figure 2 In the technical solution shown, the base station not only needs the terminal to feed back the downlink channel quality indicator information CQIdl, but also needs the terminal to feed back Cdl, and the amount of information in Cdl is large, so the resource and power consumption of the uplink transmission of the terminal is relatively large

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  • Method and device for sending, transmitting and dispatching channel quality indication in time division duplex system
  • Method and device for sending, transmitting and dispatching channel quality indication in time division duplex system
  • Method and device for sending, transmitting and dispatching channel quality indication in time division duplex system

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Embodiment Construction

[0035] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0036] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0037] The first embodiment of the present invention relates to a CQI sending method in a TDD system, specifically as image 3 shown.

[0038] In step 310, the terminal receives uplink interference information Iul from the base station. In this step, the terminal may receive the Iul from the broadcast information of the base station. The base s...

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Abstract

The invention relates to a time division duplex system, and discloses a method and a device for sending, transmitting and dispatching channel quality indication in a time division duplex system. In the method and the device, uplink interference information is acquired from a base station, a terminal calculates and reports uplink CQI by using the uplink and downlink symmetry of the TDD system to avoid reporting downlink channel response information, while the data quantity of the downlink channel response information is greater than that of the uplink CQI, so the terminal can save resources and power consumption used for uplink transmission. The base station issues the uplink interference information in a mode of broadcasting, so the efficiency is high.

Description

technical field [0001] The invention relates to a time division duplex system, in particular to related technologies of transmission scheduling in the time division duplex system. Background technique [0002] In order to improve the system capacity of the wireless communication system, the base station needs to adopt dynamic resource scheduling technology on both the downlink and uplink, which requires the base station to know the channel response information of the downlink and uplink. In the current communication system, the base station understands the coding and modulation schemes that the current terminal can use for the downlink through the downlink channel quality indication information (Channel Quality Information, referred to as "CQI") returned by the terminal, where the CQI includes the channel response C and the interference I The common influence of CQI can be correctly considered as a monotonic function of C / I. [0003] The uplink and downlink channel quality ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04W24/10H04W72/12
CPCY02B60/50Y02D30/70
Inventor 张小东简相超吴涛陈垚
Owner SPREADTRUM COMM (SHANGHAI) CO LTD