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Transmission method and device

A transmission method and technology of transmission mode are applied in the field of transmission methods and devices, and can solve problems such as inconvenience in practical application.

Active Publication Date: 2012-01-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] At present, the transmission mode design scheme required to reduce the load of PDCCH has not been determined, which brings inconvenience to practical applications

Method used

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  • Transmission method and device
  • Transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] When the transmission mode X is the downlink transmission mode, and in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the temporary identification of the cell wireless network:

[0088] In the public search space and the user equipment private search space defined by the temporary identification C-RNTI of the cell radio network, the downlink control information format DCI Format 1A is used to indicate the transmission mode of single antenna port or transmission diversity; the user equipment defined in C-RNTI In the proprietary search space, the downlink control information format Y1 is used to indicate the transmission mode of transmission diversity. as shown in Table 3:

[0089] Table 3 Correspondence table 1 of downlink transmission mode, DCI format, search space and transmission scheme

[0090]

[0091] The downlink control information format Y1 is a downlink control information format...

Embodiment 2

[0110] When the transmission mode X is the downlink transmission mode, and in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled with the cell wireless network temporary identification:

[0111] In the public search space and the user equipment-specific search space defined by the Cell Radio Network Temporary Identity (C-RNTI), the downlink control information format DCI Format 1A is used to indicate the single-antenna port or transmission diversity transmission mode; the C-RNTI is defined In the dedicated search space of the user equipment, the downlink control information format Y1 is used to indicate the transmission mode of multi-layer transmission. As shown in Table 6:

[0112] Table 6 Correspondence between downlink transmission mode, DCI format, search space and transmission scheme Table 2

[0113]

[0114] The downlink control information format Y1 is a downlink control information format that ...

Embodiment 3

[0132] When the transmission mode X is the downlink transmission mode, and in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled with the cell wireless network temporary identification:

[0133] In the public search space and the user equipment-specific search space defined by the Cell Radio Network Temporary Identity (C-RNTI), the downlink control information format DCI Format 1A is used to indicate the single-antenna port or transmission diversity transmission mode; the C-RNTI is defined In the dedicated search space of the user equipment, the downlink control information format Y1 is used to indicate the transmission mode of single-layer transmission (or single antenna port), and the port number is any one of ports 7 and 8, or ports 7, 8, 9 and 10. Any one, or fixed as port 7. As shown in Table 8:

[0134] Table 8 Correspondence between downlink transmission mode, DCI format, search space and tran...

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Abstract

The invention discloses a transmission method and a device. The method comprises the following steps of: setting a transmission mode X; sending downlink control information to user equipment through downlink control information format corresponding to the transmission mode X, wherein the downlink control information format comprises at least one element in the following elements: the downlink control information format 1A, the downlink control information format 0, the downlink control information format Y1 and the downlink control information format Y2. In the correlation technique, the transmission mode design scheme for reducing the load requirement of the physical downlink control channel (PDCCH) is also not determined. The invention provides the transmission mode design scheme, through the transmission mode design and the corresponding PDCCH load reduction, the capacity of the PDCCH can be improved, the blockage rate of the PDCCH can be reduced, and the practical application is convenient.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to a transmission method and device. Background technique [0002] The radio frame in the Long Term Evolution (LTE) system includes the frequency division duplex (Frequency Division Duplex, FDD) mode and the Time Division Duplex (TDD) mode. Frame structure. figure 1 It is a schematic diagram of the frame structure of the FDD mode according to the related technology, such as figure 1 As shown, a 10 millisecond (ms) radio frame is composed of twenty time slots (slots) with a length of 0.5ms and numbered 0-19. Time slots 2i and 2i+1 form a subframe with a length of 1ms. i. figure 2 It is a schematic diagram of the frame structure of the TDD mode according to the related technology, such as figure 2 As shown, a 10ms radio frame consists of two half frames with a length of 5ms, a half frame includes 5 subframes with a length of 1ms, and subframe i is defined as two time slots with ...

Claims

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Application Information

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IPC IPC(8): H04W28/08H04W72/04
CPCH04W28/08H04W72/04H04W48/12
Inventor 吴欣戴博夏树强左志松
Owner ZTE CORP
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