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Method and apparatus for defining transceiving timing of a physical channel in a TDD communication system which supports cross-carrier scheduling

A technology of carrier aggregation and time division duplexing, which is applied in duplex signal operation, signaling distribution, pilot signal distribution, etc., to achieve the effect of reducing transmission errors and transmission delays

Active Publication Date: 2015-11-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since any errors that occur during data transmission can be corrected later by HARQ, there is no problem sending data on CC#2, although there is severe interference on it

Method used

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  • Method and apparatus for defining transceiving timing of a physical channel in a TDD communication system which supports cross-carrier scheduling
  • Method and apparatus for defining transceiving timing of a physical channel in a TDD communication system which supports cross-carrier scheduling
  • Method and apparatus for defining transceiving timing of a physical channel in a TDD communication system which supports cross-carrier scheduling

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0094] The first embodiment describes a method for defining PDCCH, PDSCH associated with downlink data transmission when aggregated carriers are configured to have different TDD uplink-downlink configurations in a TDD wireless communication system supporting carrier aggregation and ULHARQ ACK / NACK timing relationship method.

[0095] reference below Figure 5 Examples are described in detail.

[0096] Figure 5 An example of a TDD system operating with two aggregated carriers is shown: CC1 501 with TDD uplink-downlink configuration #2 and CC2 503 with TDD uplink-downlink configuration #6. Although in Figure 5 In the targeted example, CC1 and CC2 have the same frame timing, but the present invention is applicable to cases where the radio frame timings of the component carriers do not match each other.

[0097] exist Figure 5 In , the PDSCH scheduling operation on CC1 (that is, the operation ruled out for cross-carrier scheduling) is the same as that in the traditional LT...

no. 2 example

[0111] The second embodiment describes a method for defining PDCCH, PDSCH associated with downlink data transmission when aggregated carriers are configured with different TDD uplink-downlink configurations in a TDD wireless communication system supporting carrier aggregation Another approach to the timing relationship between ULHARQ ACK / NACK and ULHARQ ACK / NACK.

[0112] Reference below Figure 8 example to describe in detail.

[0113] Figure 8 An example of a TDD system operating with two aggregated component carriers is shown: CC1 801 with TDD uplink-downlink configuration #2 and CC2 803 with uplink-downlink configuration #6. Although in Figure 8 In the targeted example, CC1 and CC2 have the same frame timing, but the present invention is applicable when the radio frame timings of the component carriers do not match each other.

[0114] exist Figure 8 In , the PDSCH scheduling operation on CC1 (ie, the operation excluding the cross-carrier scheduling) is the same as...

no. 3 example

[0125] The third embodiment describes a method for defining a link associated with uplink data transmission in a TDD wireless communication system obtaining wide bandwidth through carrier aggregation, especially when aggregated carriers are configured to have different TDD uplink-downlink configurations. The method of the timing relationship among PDCCH, PUSCH and PHICH.

[0126] Reference below Figure 11 Examples are described in detail.

[0127] Figure 11 An example of a TDD system operating with two aggregated component carriers is shown: CC11101 with TDD uplink-downlink configuration #3 and CC21103 with uplink-downlink configuration #3. Although in Figure 11 In the targeted example, CC1 and CC2 have the same frame timing, but the present invention is applicable when the radio frame timings of the component carriers do not match each other.

[0128] The LTE system employs synchronous HARQ with fixed data transmission timing in uplink. Accordingly, according to prede...

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Abstract

A method, base station, and terminal employing time division duplex and carrier aggregation are disclosed. The method by the base station includes transmitting, to a terminal, scheduling information on a control channel of a first cell, and transmitting, to the terminal, data on a shared channel of a second cell based on the scheduling information. The scheduling information is transmitted in a first downlink subframe or a first subframe including downlink pilot time slot (DwPTS) based on first subframe configuration information of the first cell. The data is transmitted in a second downlink subframe or a second subframe including DwPTS corresponding to the first downlink subframe or the first subframe. The first subframe configuration information of the first cell is different from second subframe configuration information of the second cell.

Description

[0001] This application is an invention patent with an application date of December 22, 2010, an application number of 201080064743.5, and an invention title of "Method and Device for Defining Transceiver Timing of Physical Channels in a Time Division Duplex Communication System Supporting Cross-Carrier Scheduling" Divisional application of the application. technical field [0002] The present invention relates to a cellular wireless communication system, and in particular, to a method and apparatus for defining transmission / reception timing of physical channels in cross-carrier scheduling of a Time Division Duplex (TDD) system supporting carrier aggregation. Background technique [0003] Recently, in the field of cellular communication, many studies are being conducted on Orthogonal Frequency Division Multiple Access (OFDMA) and Single Carrier Frequency Division Multiple Access (SC-FDMA). This multiple access technique is used to allocate and manage time-frequency resources...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L5/14
CPCH04L5/14H04L1/1812H04L1/1887H04L5/001H04L5/0048H04L5/0053H04L5/0055H04L5/0091H04W72/042H04W72/0446H04W72/12H04W88/02H04W88/08H04L5/0007H04W72/23
Inventor 金泳范赵俊暎韩臸奎崔承勋金润善池衡柱
Owner SAMSUNG ELECTRONICS CO LTD
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