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Processing method and device of downlink data

A technology of downlink data and processing methods, which is applied in the field of communication, can solve problems such as resource waste, data interference, and data merging errors, and achieve the effect of reducing resource waste and avoiding interference

Active Publication Date: 2013-07-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if JT (Joint Transmission) is performed between different nodes, the resource combination of different nodes cannot be aligned. If the data is independently configured according to the CRS, PDSCH start symbol or zero-power CSI-RS of each cell Mapping, due to the different resource positions of Muting (noise suppression), data merging errors will result. If the merging is performed according to the main service node, it will lead to waste of resources and also introduce interference to data from CRS of other nodes.
In addition, for DPS (Dynamic Point Selection, dynamic node selection), since different subframes will be sent to the UE by different nodes, if the data is sent according to the main serving node, there will also be resource waste and CRS interference to data. ; If you consider using zero-power CSI-RS to measure interference, you need to configure more zero-power CSI-RS, if the UE configured in the zero-power CSI-RS subframe of a node cannot be aware of the existence of zero-power CSI-RS, May have a greater impact on this UE

Method used

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  • Processing method and device of downlink data
  • Processing method and device of downlink data
  • Processing method and device of downlink data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Assuming that UE1 is a user of R11, the base station side configures multiple sets of resource positions (or resource positions and interference information at corresponding positions) for UE1 through high-level signaling, and then in the PDCCH area or EPDCCH on the subframe where UE1's downlink service needs to be scheduled The area sends DL_Grant (that is, downlink grant) information to indicate that there is UE1's downlink data in the current subframe, UE1 performs blind detection on this subframe to obtain DL_Grant, and UE1 then according to the indication information in DL_Grant (in practical applications, in bits The data exists in the form of data, and these bit data are used to indicate the format of the downlink authorization control information) The antenna port indication information in the DCI (Downlink Control Information, downlink control information) Format 2C is obtained through blind detection to determine the multiple sets of resource positions configure...

Embodiment 2

[0059] Assuming that UE1 is a user of R11, the base station side configures multiple sets of resource positions (or resource positions and interference information at corresponding positions) for UE1 through high-level signaling, and then in the PDCCH area or EPDCCH on the subframe where UE1's downlink service needs to be scheduled The zone sends DL_Grant information to indicate that there is UE1's downlink data in the current subframe, and UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant. Then UE1 obtains the new data indication information in the Disable TB block in DCI Format 2C through blind detection to decide which one of multiple sets of resource positions (or resource positions and interference information of corresponding positions) configured by the base station to use. For example: UE1 selects the first resource position (or the resource position and the interference information of the corresponding position) when obta...

Embodiment 3

[0061] Assuming that UE1 is a user of R11, the base station side configures multiple sets of resource positions (or resource positions and interference information of corresponding positions) for UE1 through high-level signaling, and then in the PDCCH area or EPDCCH area on the subframe that needs to schedule the downlink service of UE1 The DL_Grant is sent to indicate that the downlink data of UE1 exists in the current subframe, and UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant. Then UE1 obtains the new data indication information and antenna port indication information in the Disable TB block in DCI Format 2C through blind detection to decide which of the multiple sets of resource positions (or resource positions and the interference information of the corresponding positions) configured by the base station to use set. For example, UE1 selects the first set of resource locations (or resource locations and interference info...

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Abstract

The invention discloses a processing method and a device of downlink data, wherein the method includes the steps of receiving through user equipment (UE) a plurality of sets of resource indication information which is configurated for the UE by a base station and is sent through a high-rise signal, and storing the plurality of sets of resource indication information; receiving through the UE a subframe which is sent by the base station, obtaining downlink authorization indication information in the subframe; selecting resource indication information which is matched with the downlink authorization indication information from the plurality of sets of resource indication information through the UE, wherein the resource indication information is used for indicating a resource position where interference exists or a resource position and corresponding interference information of the resource position; and conducting interference treatment through the UE on downlink data which are sent to the UE. According to the processing method and the device of the downlink data, cooperation transmission (including: joint sending, joint scheduling, joint beam shaping and dynamic node selection) among different nodes for the same UE is achieved. Therefore, the effect of reducing resource waste and the effect of avoiding interference for data demodulation caused by a control domain or pilot frequency are achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a downlink data processing method and device. Background technique [0002] After the LTE (Long Term Evolution, long-term evolution) system has experienced several versions of R8 / 9 / 10, the R11 version technology has been accurately studied successively. At present, some R8 version products are gradually commercialized, and R9 and R10 versions are subject to further product planning. [0003] After going through the R8 and R9 versions, the R10 version added many new features on the basis of the first two, for example, DMRS (Demodulation Reference Signal, demodulation reference signal), CSI-RS (Channel State Information Reference Signal, Channel State Information Reference Signal) and other pilot features, 8-antenna support and other transmission and feedback features, especially eICIC (Enhanced Inter-Cell Interference Cancellation, Inter-Cell Interference Cancellation Enhancemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/14H04W72/54
CPCH04L5/0053H04W72/08H04L5/0035H04W72/14H04L5/0094H04L5/00H04B7/022H04B7/024H04L5/0048H04L5/0091H04L5/0073H04W72/541H04W72/23
Inventor 郭森宝孙云锋张晨晨任敏
Owner ZTE CORP
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