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Downlink control information configuration method, downlink control information acquisition method, base station and terminal

A technology of control information and configuration method, applied in the field of communication

Active Publication Date: 2014-05-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, consider that in Scenario 4, since different nodes under the same Cell (cell) have the same ID (IDentity, identification), the configuration under these nodes at this time is Transmission Mode 8 (Transmission Mode 8, transmission mode 8) or TM9 (TransmissionMode 9, transmission mode 9) UE can only use n SCID Selecting two scrambling codes will limit the cell splitting gain in Scenario4

Method used

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  • Downlink control information configuration method, downlink control information acquisition method, base station and terminal
  • Downlink control information configuration method, downlink control information acquisition method, base station and terminal
  • Downlink control information configuration method, downlink control information acquisition method, base station and terminal

Examples

Experimental program
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Embodiment 1

[0579] Assuming that UE1 is a terminal of R11 or higher version, the base station configures UE1 with two DMRS sequence initialization indicators (X0, X1) through UE-Specific (UE-specific) high-layer signaling. When the base station configures the terminal to use DCI Format 1A in the terminal-specific search space to instruct the terminal to receive PDSCH, use the LVRB / DVRB bit in DCI Format 1A to instruct the terminal to use the above UE-Specific (UE-specific) high-level signaling to configure two DMRS on the terminal side Which one of the sequence initialization flag performs reception and processing of DMRS and PDSCH. For example, when the LVRB / DVRB bit value is 0, it indicates that the DMRS sequence is generated using X0. When the LVRB / DVRB bit value is 1, it indicates that the DMRS sequence is generated using X1.

[0580] UE1 determines by detecting the LVRB / DVRB bit in the downlink control signaling DCI Format 1A which one of the two identification signaling configured ...

Embodiment 2

[0583] Assuming that UE1 is a terminal of R11 or higher version, the base station configures two pieces of bandwidth information (S0, S1) for UE1 through UE-Specific high-layer signaling. When the base station configures the terminal to use DCI Format 1A in the terminal-specific search space to instruct the terminal to receive PDSCH, use the LVRB / DVRB bit in DCI Format 1A to instruct the terminal to use the above UE-Specific high-level signaling to configure two bandwidth information on the terminal side (S0, Which one of S1) performs reception and processing of DMRS and PDSCH. For example, when the LVRB / DVRB bit value is 0, it indicates that bandwidth information is generated using S0. When the LVRB / DVRB bit value is 1, it indicates that the bandwidth information is generated using S1.

[0584] UE1 obtains which of the two bandwidth information configured by the high layer used by the DMRS and PDSCH sent by the base station side is generated by detecting the LVRB / DVRB bit in...

Embodiment 3

[0587] Assuming that UE1 is a terminal of R11 or higher version, the base station side configures the Qusi-Co-Location information of DMRS for UE1 through UE-Specific high layer signaling. When the base station configures the terminal to use DCI Format 1A in the terminal-specific search space to instruct the terminal to receive PDSCH, use the LVRB / DVRB bits in DCI Format1A to instruct the terminal to use the above UE-Specific high-level signaling to configure the terminal to demodulate DMRS or receive PDSCH. The large-scale information of the CRS during synchronization is still the configured NZP CSI-RS large-scale information. For example, when the LVRB / DVRB bit value is 0, the large-scale information of the CRS during synchronization is used to demodulate the DMRS or receive the PDSCH. When the LVRB / DVRB bit value is 1, the configured NZP CSI-RS large-scale information is used to demodulate the DMRS or receive the PDSCH.

[0588] UE1 obtains which of the Qusi-Co-Location in...

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Abstract

The invention provides a downlink control information configuration method which comprises the following steps: a base station configures a plurality of sets of information for a terminal through a special high-level signaling for the terminal; and the base station instructs the terminal to adopt one set of the information configured by the special high-level signaling for the terminal to receive a DMRS and / or a physical downlink shared channel PDSCH according to related information of DCI Format 1A. The invention further provides a downlink control information acquisition method which comprises the following steps: the terminal acquires the plurality of sets of information configured by the base station through the special high-level signaling for the terminal; and the terminal determines which set of the information among the plurality of sets of information is adopted to receive a DMRS and / or a physical downlink shared channel PDSCH according to the related information of DCI Format 1A. The invention further provides a base station and a terminal.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for configuring and acquiring downlink control information, a base station and a terminal. Background technique [0002] The Long Term Evolution (LTE for short) system has experienced several versions of R8 / 9 / 10, and then accurately researched R11 technology one after another. At present, some R8 products are gradually commercialized, and R9 and R10 are subject to further product planning. [0003] After going through the stages of R8 and R9, R10 added many new features on the basis of the first two, such as DMRS (Demodulation Reference Signal, demodulation reference signal), CSI-RS (ChannelState Information Reference Signal, channel state information reference Signal) and other pilot characteristics, 8-antenna support and other transmission and feedback characteristics, etc., especially eICIC (enhanced Inter-Cell InterferenceCancelling, enhanced Inter-Cell Interferenc...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L1/18
CPCH04B7/0689H04B7/024H04L5/0035H04L5/0053H04L5/0051H04L5/0094H04L5/0048H04W72/23H04L5/005
Inventor 郭森宝孙云锋张峻峰陈东丽
Owner ZTE CORP
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