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Transmission method and device

A technology of transmission method and transmission mode, applied in the field of transmission method and device, capable of solving problems such as practical application inconvenience

Active Publication Date: 2018-01-23
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
  • Transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] When the transmission mode X is the downlink transmission mode, in the downlink control information under the transmission mode X, when the cyclic check code in the downlink control channel is scrambled with the cell wireless network temporary identifier:

[0088] In the public search space and the user equipment-specific search space defined by the cell radio network temporary identifier C-RNTI, 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 dedicated search space, the downlink control information format Y1 is used to represent the transmission mode of transmit diversity. as shown in Table 3:

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

[0090]

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

Embodiment 2

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

[0111] In the user equipment-specific search space defined by the public search space and the Cell Radio Network Temporary Identifier (C-RNTI), the downlink control information format DCI Format 1A is used to represent the single-antenna port or transmission diversity transmission mode; defined in the C-RNTI In the user equipment-specific search space, the downlink control information format Y1 is used to represent 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, in the downlink control information under the transmission mode X, when the cyclic check code in the downlink control channel is scrambled with the cell wireless network temporary identifier:

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

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Abstract

The invention discloses a transmission method and device. The method includes: setting a transmission mode X; sending downlink control information to user equipment through a downlink control information format corresponding to the transmission mode X, wherein the downlink control information format includes at least one of the following: downlink Control information format 1A, downlink control information format 0, downlink control information format Y1, downlink control information format Y2. In the related art, there is no transmission mode design scheme that needs to reduce the load of PDCCH. The present invention provides such a transmission mode design scheme. Through the design of this transmission mode and the corresponding reduction of PDCCH load, the capacity of PDCCH can be improved. As well as reducing the blocking rate of the PDCCH, it is convenient for practical application.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a transmission method and device. Background technique [0002] The radio frame in the Long Term Evolution (referred to as LTE) system includes a frequency division duplex (Frequency Division Duplex, referred to as FDD) mode and a time division duplex (Time Division Duplex, referred to as 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 wireless frame of 10 milliseconds (ms) consists of twenty slots (slots) with a length of 0.5ms and numbers 0 to 19, and slots 2i and 2i+1 form a subframe (subframe) with a length of 1ms i. figure 2 is a schematic diagram of a frame structure of a TDD mode according to related technologies, such as figure 2 As shown, a 10ms radio frame consists of two half frames with a length of 5ms. A half frame includes five subframes wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/08H04W72/04
CPCH04W48/12
Inventor 吴欣戴博夏树强左志松
Owner ZTE CORP