Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for defining transmission and reception timing of physical channels in a time division duplex communication system supporting cross-carrier scheduling

A technology of time-division duplexing and dispatching information, which is applied to the separation device of the transmission path, duplex signal operation, communication between multiple stations, etc., to achieve the effect of reducing transmission errors and transmission delays

Active Publication Date: 2015-08-26
SAMSUNG ELECTRONICS CO LTD
View PDF1 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for defining transmission and reception timing of physical channels in a time division duplex communication system supporting cross-carrier scheduling
  • Method and apparatus for defining transmission and reception timing of physical channels in a time division duplex communication system supporting cross-carrier scheduling
  • Method and apparatus for defining transmission and reception timing of physical channels in a time division duplex communication system supporting cross-carrier scheduling

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0092] 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 UL HARQ ACK / NACK timing relationship method.

[0093] reference below Figure 5 Examples are described in detail.

[0094] 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.

[0095] exist Figure 5 In , the PDSCH scheduling operation on CC1 (that is, the operation that rules out (ruled out) the cross-carrier scheduling) is the same as that in ...

no. 2 example

[0109] 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 UL HARQ ACK / NACK and UL HARQ ACK / NACK.

[0110] Reference below Figure 8 example to describe in detail.

[0111] 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.

[0112] exist Figure 8 In , the PDSCH scheduling operation on CC1 (ie, the operation excluding cross-carrier scheduling) is the same as i...

no. 3 example

[0123] 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.

[0124] Reference below Figure 11 Examples are described in detail.

[0125] Figure 11 An example of a TDD system operating with two aggregated component carriers is shown: CC1 1101 with TDD uplink-downlink configuration #3 and CC2 1103 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.

[0126] The LTE system employs synchronous HARQ with fixed data transmission timing in uplink. Accordingly, the uplink / downl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

technical field [0001] 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 [0002] 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 for transmission of data and / or control information to and from multiple users without overlapping each other, i.e. A distinction is made between data and control information. [0003] One of the important features of a cellular communication system is to support adjustable bandwidth to provide high-speed wireless data services. For example, a Long Term Evo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04L27/26
CPCH04L5/0053H04L5/14H04L5/0048H04L5/0055H04L5/001H04L1/1887H04L1/1812H04W72/12H04W72/042H04L5/0091H04W88/08H04W88/02H04W72/0446H04L5/0007H04W72/23
Inventor 金泳范赵俊暎韩臸奎崔承勋金润善池衡柱
Owner SAMSUNG ELECTRONICS CO LTD