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Method and apparatus for transmitting/receiving uplink signaling information in a single carrier fdma system

A single-carrier frequency division, signaling information technology, applied in the modulation carrier system, link quality-based transmission modification, multi-frequency code system and other directions, can solve the problems of reduced cell coverage and increased signal power, to prevent PAPR Effect of increasing and eliminating factors that interfere with single subcarrier transmission

Active Publication Date: 2009-03-25
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the PAPR increases, the cell coverage decreases, so the signal power required by the terminal increases

Method used

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  • Method and apparatus for transmitting/receiving uplink signaling information in a single carrier fdma system
  • Method and apparatus for transmitting/receiving uplink signaling information in a single carrier fdma system
  • Method and apparatus for transmitting/receiving uplink signaling information in a single carrier fdma system

Examples

Experimental program
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Effect test

no. 1 example

[0070] According to the first embodiment of the present invention, the terminal may notify the base station whether uplink signaling information (in particular, ACK / NACK) will be transmitted. Thereafter, reference will be made to Figure 8 The use of frequency-time resources according to the first embodiment of the present invention will be described.

[0071] exist Figure 8 In , reference numeral 801 denotes one subframe used in uplink of the LTE system, and reference numeral 808 denotes a frequency band allocated for transmitting data. In the frequency band 808, reference numeral 802 denotes a first subcarrier set allocated to a first terminal transmitting uplink data instead of ACK / NACK, and reference numeral 803 denotes a set of subcarriers allocated to a first terminal transmitting uplink data together with ACK / NACK. The second subcarrier set allocated by the second terminal.

[0072] In a first set of subcarriers 802, pilots 804 and 806 for channel estimation are tra...

no. 2 example

[0088] According to the second embodiment of the present invention, a one-bit or multi-bit ACK / NACK field is arranged in the control information. When the ACK / NACK is transmitted together with uplink data, the ACK / NACK is carried by a predefined ACK / NACK field in the control information. Therefore, only coded data and coded control information are multiplexed before resource mapping. When there is ACK / NACK, the ACK / NACK field is set to have a value indicating ACK or NACK according to success or failure of reception of downlink data. Otherwise, the ACK / NACK field is set to have a value indicating NACK.

[0089] Figure 13 The operation of the transmitter (terminal) according to the second embodiment of the present invention is shown, and FIG. 14 shows the transmitter (terminal). refer to Figure 13 , when the operation of the terminal has started, the terminal determines in step 1302 whether there is data to be transmitted. When there is data to be transmitted by the termi...

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Abstract

A method and an apparatus for transmitting uplink information items having various characteristics by using a single Fast Fourier Transform (FFT) block The method includes determining whether uplink signaling information exists to be transmitted when uplink data exists to be transmitted; multiplexing the uplink data and control information for the uplink data and transmitting multiplexed data through a first frequency resource allocated for the uplink data, when no uplink signaling information exists; multiplexing the uplink data, control information for the uplink data, and the uplink signaling information, and transmitting multiplexed data through a first frequency resource allocated for the uplink data, when the uplink signaling information exists; and transmitting the uplink signaling information through a second frequency resource allocated for the uplink signaling information, when no uplink data is to be transmitted and the uplink signaling information exists to be transmitted.

Description

technical field [0001] The present invention relates to a method and apparatus for transmitting / receiving uplink signaling information and uplink data in a Frequency Division Multiple Access (FDMA) wireless communication system using a single carrier. Background technique [0002] An Orthogonal Frequency Division Multiplexing (OFDM) scheme or a Single Carrier Frequency Division Multiple Access (SC-FDMA) scheme similar to the OFDM scheme has been actively researched as a scheme usable for high-speed data transmission through wireless channels in a mobile communication system. [0003] OFDM schemes that utilize multiple carriers to transmit data are a specific type of multicarrier modulation (MCM) scheme in which a serial symbol sequence is transformed into a parallel symbol sequence and multiple mutually orthogonal subcarriers (or subcarrier channels) to modulate parallel symbol sequences. [0004] Figure 1 shows the transmitter of a typical OFDM system. The OFDM transmitte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L1/1664H04L1/1671H04L1/1812H04L5/0048H04L5/0055H04L27/261H04L27/2602H04L1/0031H04L5/0044H04L1/1861H04L5/0007H04L5/0053H04L27/2601H04B1/69H04L1/0026H04L1/0072H04L5/0016H04L5/0057H04L5/023
Inventor 郭龙准李周镐赵俊暎
Owner SAMSUNG ELECTRONICS CO LTD