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Transmission method and transmission system for enhancing downlink control information and user equipment (UE)

A technology to enhance downlink control and control information, applied in diversity/multi-antenna systems, access restrictions, wireless communication, etc., can solve problems such as inability to transmit downlink control information

Inactive Publication Date: 2013-09-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0043] The technical problem to be solved by the present invention is to provide a transmission method, transmission system and user equipment for enhanced downlink control information, so as to solve the problem that the downlink control information cannot be transmitted under the application of enhanced common search space

Method used

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  • Transmission method and transmission system for enhancing downlink control information and user equipment (UE)
  • Transmission method and transmission system for enhancing downlink control information and user equipment (UE)
  • Transmission method and transmission system for enhancing downlink control information and user equipment (UE)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0132] Setting the downlink control information format X in the enhanced common search space ECSS by the eNodeB includes the following steps:

[0133] 1) The eNodeB obtains the access indication signaling through the physical broadcast channel PBCH;

[0134] 2) The eNodeB selects the enhanced common search space ECSS or common search space CSS through access signaling.

[0135] 3) If ECSS is selected, the eNodeB sends DCI format X in the enhanced common search space ECSS through the enhanced control channel ePDCCH; if CSS is selected, the eNodeB sends DCI format X in the common search space CSS through the control channel PDCCH;

[0136] 4) The UE will search for DCI format X and obtain common control messages according to DCI format X.

[0137] If the current search space is ECSS, the common control message indicates a URS-based downlink transmission, and if the current search space is CSS, the common control message indicates a CRS-based downlink transmission.

[0138] Fur...

Embodiment 2

[0147] Embodiment 2: On the enhanced common search space ECSS, it indicates that FormatX only corresponds to the single-antenna port transmission mode, and the antenna port is fixed

[0148] In this embodiment, in ECSS, when the cyclic check code in the downlink control channel is scrambled with a public flag, for example, when the UE is set by the upper layer to use the CRC scrambled by the common RNTI to decode the PDCCH, DCIFormatX can be used Indicates the transport mode of single-layer transport. The single-layer transmission here refers to the transmission mode of a single antenna port, and the corresponding antenna port has the following configurations:

[0149] Configuration 1: The single-antenna port corresponding to DCIFormatX is fixed as port 7, and its configuration in mode Y is shown in Table 4:

[0150] Table 4

[0151]

[0152] Configuration 2: The single-antenna port corresponding to DCIFormatX is port M, and M is a positive integer greater than 0; and, M ...

Embodiment 3

[0155] Embodiment 3: On the ECSS, it indicates that FormatX only corresponds to the single-antenna port transmission mode, and the antenna port signaling indicates

[0156] The single-antenna port corresponding to DCIFormatX is port M, and M is a positive integer greater than 0; and, M is selected from ports 7 and 8 through a bit of downlink control signaling, or M is obtained from ports 9 and 10 It is obtained by selecting one bit of the downlink control signaling, and is obtained by selecting one bit of the downlink control signaling from ports 7, 8, 9 and 10, and its configuration in mode Y is shown in Table 6:

[0157] Table 6

[0158]

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Abstract

The invention discloses a transmission method and a transmission system for enhancing downlink control information and user equipment (UE). An evolved node B generates the downlink control information according to a downlink control information format X, transmits the downlink control information on an enhanced downlink control channel (ePDCCH) and scrambles a cyclic check code in the enhanced downlink control channel by using a public identity, wherein the downlink control information format X is used for representing a physical downlink shared channel (PDSCH) transmission mode based on a UE specific reference signal in the enhanced common search space (ECSS); and the UE receives a signal of the ePDCCH, searches the downlink control information format X and acquires the public control message according to the downlink control information format X. According to the scheme, when the cyclic check mode in the enhanced downlink control channel is scrambled by using the public identity, the transmission mode based on a UE specific reference signal can be indicated in the ECSS, so that the defects existing in the prior art are overcome.

Description

technical field [0001] The present invention relates to the field of mobile wireless communication, in particular to a method for transmitting enhanced downlink control information in a wireless communication system, a transmission system and user equipment. Background technique [0002] A radio frame in a Long Term Evolution (LTE for short) system includes frame structures in a Frequency Division Duplex (FDD for short) mode and a Time Division Duplex (TDD for short) mode. 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 halfframes wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04W48/10H04W48/16
Inventor 陈艺戬徐俊戴博张峻峰
Owner ZTE CORP
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