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Feedback of precoding control indication (PCI) and channel quality indication (CQI) in a wireless communication system

A technology of channel quality indication and control indication, applied in the field of communication, can solve problems such as radio resource consumption

Inactive Publication Date: 2016-09-21
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, precious radio resources are consumed in sending feedback information

Method used

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  • Feedback of precoding control indication (PCI) and channel quality indication (CQI) in a wireless communication system
  • Feedback of precoding control indication (PCI) and channel quality indication (CQI) in a wireless communication system
  • Feedback of precoding control indication (PCI) and channel quality indication (CQI) in a wireless communication system

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Experimental program
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Embodiment Construction

[0020] The techniques described in this disclosure can be used in various wireless communication systems such as Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) system, single-carrier FDMA (SD-FDMA) system, and the like. The terms "system" and "network" are often used interchangeably. A CDMA system may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, and so on. UTRA includes Wideband CDMA (which includes W-CDMA, UMTS-FDD) and Time Division Synchronous CDMA (TD-SCDMA, which includes UMTS-TDD, low chip rate UMTS-TDD and high chip rate UMTS-TDD). cdma2000 covers IS-2000, IS-95 and IS-856 standards. A TDMA system can implement a radio technology such as Global System for Mobile Communications (GSM). OFDMA systems can implement radio technologies such as Evolved UTRA (E-UTRA), Ultra Mobile Br...

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Abstract

Techniques for sending feedback information in a wireless communication system are described. In one design, precoding control indication (PCI), rank, and channel quality indication (CQI) for data transmission from a transmitter to a receiver may be determined by evaluating different hypotheses. A report may be formed based on the PCI, rank and CQI. The PCI may include a precoding matrix or vector to use for the data transmission. The CQI may include at least one CQI value for at least one transport block to send for the data transmission. The rank and CQI may be combined based on a mapping. For example, the CQI may include one CQI value and fall within a first range of values if one transport block is preferred by the receiver. The CQI may include two CQI values and fall within a second range of values if two transport blocks are preferred.

Description

[0001] This application is a divisional application of the application dated August 16, 2007, application number 200780030599.1, and titled "Feedback of Precoding Control Indication (PCI) and Channel Quality Indication (CQI) in Wireless Communication System". [0002] Claim Priority Pursuant to 35 U.S.C. §119 [0003] This application claims the title of "Joint Signaling of Precoding Control Information and Channel Quality Indicators in a Cellular MIMO System" submitted on August 18, 2006 ), Provisional Application Serial No. 60 / 838,677, which is assigned to the assignee of the present application and is hereby expressly incorporated herein by reference. technical field [0004] Generally speaking, the present invention relates to communication technology, and specifically, the present invention relates to the technology of sending feedback information in a wireless communication network system. Background technique [0005] In a wireless communication system, a transmitter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/063H04B7/0632H04B7/0639H04B7/0619
Inventor J·J·布兰斯I·J·费尔南德斯-科尔巴顿
Owner QUALCOMM INC