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Scrambling and modulation to constrain the constellation size of ack/nak transmission on the data channel

A technique of constellation diagram and modulation order applied in the field of Euclidean distance

Active Publication Date: 2015-03-11
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

HARQ protection is available for data, however, retransmission of ACK / NAK on uplink does not have HARQ protection

Method used

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  • Scrambling and modulation to constrain the constellation size of ack/nak transmission on the data channel
  • Scrambling and modulation to constrain the constellation size of ack/nak transmission on the data channel
  • Scrambling and modulation to constrain the constellation size of ack/nak transmission on the data channel

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Embodiment Construction

[0027] Various aspects are now described with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that the described aspects may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing these aspects.

[0028] As used in this application, the terms "component," "module," "system," etc., are intended to refer to a computer-related entity: hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process executing on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. By way of illustration, both an application executing on a computing device and the ...

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Abstract

Aspects describe maximizing a Euclidean distance for an ACK transmission as a function of the number of bits in a HARQ-ACK and a modulation order. Encoding includes placing escape sequences in the HARQ-ACK, wherein the number of escape sequences is based on the number of bits and the modulation order. Multiple encoded ACK blocks are combined to obtain a vector sequence that is multiplexed with the encoded data and interleaved, such as on a “time-first” manner. Scrambling is performed as a function of the size and the modulation order. For a 1-bit ACK, the scrambling is performed to achieve any two corners in any constellation for transmission for the ACK. For a 2-bit ACK, the scrambling is performed to achieve any four corners in any constellation for transmission for the ACK.

Description

[0001] cross reference [0002] This application claims U.S. Serial No. 61 / 039,724, filed March 26, 2008, entitled "A METHOD AND APPARATUS FOR ACK TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM" Interest in the Provisional Application, which is assigned to the present assignee and is incorporated herein by reference in its entirety. technical field [0003] The following description relates generally to wireless communications, and more particularly to maximizing the Euclidean distance for the coding, scrambling and modulation of ACK / NAK. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, video, music, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth and transmit power). Examples of such multiple-access systems include Code Division Multiple Access (CDMA) sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16
CPCH04L1/1692H04L1/1812H04L1/1664H04L5/0055H04L27/10H04L1/16
Inventor 胡安·蒙托霍彼得·加尔
Owner QUALCOMM INC