WO2013107319A1 - 下行数据处理、指示方法及装置 - Google Patents
下行数据处理、指示方法及装置 Download PDFInfo
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- WO2013107319A1 WO2013107319A1 PCT/CN2013/070309 CN2013070309W WO2013107319A1 WO 2013107319 A1 WO2013107319 A1 WO 2013107319A1 CN 2013070309 W CN2013070309 W CN 2013070309W WO 2013107319 A1 WO2013107319 A1 WO 2013107319A1
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- resource location
- downlink
- indication information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0073—Allocation arrangements that take into account other cell interferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
- H04L5/0035—Resource allocation in a cooperative multipoint environment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the present invention relates to the field of communications, and in particular to a downlink data processing, indication method, and apparatus.
- LTE Long Term Evolution
- the LTE (Long Term Evolution) system has been researching the R11 version technology continuously after several versions of R8/9/10. At present, some R8 versions are gradually commercialized, and the R9 and R10 versions are subject to further product planning. After the R8 and R9 versions, the R10 version adds many new features to the former two, such as DMRS (Demodulation Reference Signal) and CSI-RS (Channel State Information Reference).
- DMRS Demodulation Reference Signal
- CSI-RS Channel State Information Reference
- Pilot characteristics such as Signal, channel state information reference signal, and transmission and feedback characteristics such as 8 antenna support, especially eICIC (Enhanced Inter-Cell Interference Cancelling) technology considers ICIC in R8/9 version.
- the interference avoidance technology between cells is further considered.
- the cell interference avoidance under the homogeneous network is mainly considered in the early stage of the R10 version.
- the mainstream technology considers the elCIC technology and the CoMP (Coordinated Multi-point).
- CoMP means that multiple nodes cooperate to send data to one or more UEs on the same time-frequency resource or different time-frequency resources. Therefore, CoMP can reduce interference between cells, improve throughput at the cell edge, and expand Cell coverage.
- LTE defines a PDCCH (Physical Downlink Control Channel) bearer scheduling allocation and other control information.
- PDCCH Physical Downlink Control Channel
- Each PDCCH is composed of a number of CCEs (Control Channel Elements), and the number of CCEs per subframe is determined by the PDCCH. The number and downstream bandwidth are determined.
- the UE User Equipment obtains the PDCCH by performing blind detection in the search space.
- the search space is divided into a common search space and a user-specific search space.
- the common search space refers to an area that all UEs search for. Carrying cell-specific information; the user-specific search space is a spatial range that a single UE will search, and the user-specific search spaces of multiple UEs may overlap, but the general initial search location of the user-specific search space of each UE is not the same.
- the base station Before the UE performs blind detection, the base station generally informs the UE of the working mode to be adopted and the CRC for the PDCCH through the high layer signaling (Cyclic Redundancy).
- RNTI Radio Network Temporary Identity
- the aggregation level is the number of CCEs occupied by the PDCCH.
- the aggregation level and the relative position of the first control channel element of the PDCCH in the user-specific search space and the corresponding relationship are shown in Table 2.
- Table 2 it is a schematic diagram of the user-specific search space, the possible first CCE location and its corresponding aggregation level. Table 2. Correspondence between the aggregation level and the first CCE location
- the proposal for downlink control signaling is basically about CSI-RS signaling enhancement, DMRS signaling enhancement, CRS (Cell-Specific Reference Signal). Signal) collision and interference problems avoid enhancement, PDSCH start symbol alignment receive enhancement, zero power and non-zero power CSI-RS collision and interference avoidance enhancement.
- CRS collision and interference problem avoidance enhancement CRS collision and interference problem avoidance enhancement, PDSCH start symbol alignment reception enhancement, zero power and non-zero power CSI-RS collision and interference avoidance enhancement are all in the rate matching category, collectively referred to as interference avoidance method, specifically, according to Notification signaling to rate
- interference avoidance method specifically, according to Notification signaling to rate
- the main reason for the matching processing or the interference compression processing is that: In the new scenario of the R11 version, especially the Scenariol ⁇ 3, because different nodes have different cell identifiers, the CRS positions of different nodes are different, resulting in different nodes. The sequence is also different. At this time, if JT (Joint Transmission, Joint Transmission) is performed between different nodes, the resource combination of different nodes cannot be aligned.
- JT Joint Transmission, Joint Transmission
- the data is independently performed according to the CRS, PDSCH start symbol or zero-power CSI-RS configuration of each cell, Mapping, due to Muting (noise suppression) resource location will lead to data merging errors, if the merging according to the main service node, resulting in waste of resources, but also introduced the interference of other nodes' CRS data.
- DPS Dynamic Point Selection
- different subframes are sent to the UE by different nodes. If the data is sent according to the primary serving node, there is also resource waste and CRS interference to the data. If it is considered to measure interference using zero-power CSI-RS, more zero-power CSI-RS needs to be configured.
- the present invention provides a downlink data processing, indication method, and apparatus to solve at least the above problems.
- a downlink data processing method including: a user equipment (UE) receives a plurality of sets of resource indication information configured by a base station for a UE by using a high layer signaling, and a UE receives a subframe sent by a base station. Obtaining the downlink grant indication information in the subframe; the UE selects the resource indication information that is matched with the downlink grant indication information from the multiple sets of resource indication information, where the resource indication information is used to indicate: the resource location where the interference exists, or the resource location And interference information corresponding to the resource location; the UE performs interference processing on the downlink data that is sent to the UE at the resource location.
- UE user equipment
- the downlink authorization indication information includes at least one of the following: antenna port indication information, new data indication information of the invalid transmission block, scrambling sequence indication information, aggregation level of downlink authorization control information, and initial control channel of downlink authorization control information.
- the user equipment (UE) receives the multiple sets of resource indication information that is configured by the base station for the UE, and the UE receives the multiple sets of resource indications that the base station configures for the UE by using the user-specific high-layer signaling.
- the UE receives the subframe sent by the base station, and includes: the UE receives the physical downlink control channel of the base station in the subframe.
- the obtaining the downlink authorization indication information in the subframe includes: the UE performs blind detection on the subframe, and parses the downlink authorization information; performs blind detection on the downlink data corresponding to the UE indicated by the downlink authorization information, and obtains downlink authorization indication information. .
- the UE performs interference processing on the downlink data that is sent to the UE at the resource location, including: the UE prohibits receiving the downlink data at the resource location; or, the UE learns The base station does not map data on the resource corresponding to the resource location, where the unmapped data includes: not mapping the physical downlink shared channel data; or, after the UE learns that the base station does not map the data on the resource corresponding to the resource location, the UE performs the resource location.
- Rate matching where not mapping data includes: not mapping physical downlink shared channel data.
- the resource location includes at least one of: a time domain OFDM symbol start position of a physical downlink shared channel (PDSCH), a multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to the resource location, and a cell-specific reference signal ( CRS) configuration information, zero-power CSI-RS configuration information, non-zero power CSI-RS configuration information, period and subframe offset of zero-power CSI-RS, period of non-zero-power CSI-RS, and subframe offset.
- PDSCH physical downlink shared channel
- MMSFN multicast broadcast single frequency network
- CRS cell-specific reference signal
- the UE when the resource indication information is used to indicate: the resource location and the interference information corresponding to the resource location, the UE performs interference processing on the downlink data sent to the UE at the resource location, where: the UE receives the downlink data at the resource location; Interference cancellation is performed on the downlink data according to the interference information corresponding to the resource location.
- the interference information corresponding to the resource location and the resource location includes at least one of the following: a cell-specific reference signal (CRS) configuration information, a zero-power channel state information reference signal (CSI-RS) configuration information, or a non-zero power CSI-RS.
- CRS cell-specific reference signal
- CSI-RS zero-power channel state information reference signal
- the CRS configuration information includes at least one of the following: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS;
- the zero-power CSI-RS configuration information includes at least one of the following: a resource position of the zero-power CSI-RS, The number of resource elements of the zero-power CSI-RS, the period of the zero-power CSI-RS, and the subframe offset;
- the non-zero-power CSI-RS configuration information includes at least one of the following: number of ports of the non-zero-power CSI-RS, non-zero-power CSI - Resource location of the RS, period of the non-zero power CSI-RS, and subframe offset.
- a downlink data processing indication method including: transmitting, by a base station, a plurality of sets of resource indication information configured by a base station for a UE to a user equipment (UE) by using a high layer signaling; Sending a downlink subframe carrying the downlink grant indication information; the base station, after the UE selects the resource indication information that matches the downlink grant indication information from the multiple sets of resource indication information, instructs the UE to perform interference processing on the downlink data according to the resource indication information, where
- the resource indication information is used to indicate: a resource location where there is interference, or interference information corresponding to the resource location and the resource location.
- the downlink authorization indication information includes at least one of the following: antenna port indication information, new data indication information of the invalid transmission block, scrambling sequence indication information, aggregation level of downlink authorization control information, and initial control channel of downlink authorization control information.
- the base station sends, by using the high layer signaling, the multiple sets of resource indication information configured by the base station for the UE to the user equipment UE, where: the base station sends the multiple sets of resource indication information configured for the UE to the UE by using the user-specific high-layer signaling;
- the transmitting, by the UE, the downlink subframe that carries the downlink grant indication information includes: the base station carrying the downlink grant information in the physical downlink control channel (PDCCH) region or the enhanced physical downlink control channel (EPDCCH) region on the subframe, and sending the subframe to the subframe
- the downlink grant information is used to indicate that the subframe has downlink data corresponding to the UE.
- the base station instructs the UE to perform interference processing on the downlink data according to the resource indication information, including: the base station instructing the UE to prohibit receiving downlink data at the resource location; or, the base station notifying The UE base station does not map data on the resource corresponding to the resource location, where the unmapped data includes: not mapping the physical downlink shared channel data; or the base station notifying the UE that the base station does not map the data on the resource corresponding to the resource location, indicating that the UE is The rate matching is performed on the resource location, where the unmapped data includes: the physical downlink shared channel data is not mapped.
- the resource location includes at least one of: a time domain OFDM symbol start position of a physical downlink shared channel (PDSCH), a multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to the resource location, and a cell-specific reference signal ( CRS) configuration information, zero-power CSI-RS configuration information, non-zero power CSI-RS configuration information, period and subframe offset of zero-power CSI-RS, period of non-zero-power CSI-RS, and subframe offset.
- PDSCH physical downlink shared channel
- MMSFN multicast broadcast single frequency network
- CRS cell-specific reference signal
- the base station instructs the UE to perform interference processing on the downlink data sent to the UE at the resource location, where: the base station instructs the UE to receive at the resource location.
- the downlink data indicates that the UE performs interference cancellation on the downlink data according to the interference information corresponding to the resource location.
- the interference information corresponding to the resource location and the resource location includes at least one of the following: a cell-specific reference signal (CRS) configuration information, a zero-power channel state information reference signal (CSI-RS) configuration information, and a non-zero power
- CRS cell-specific reference signal
- CSI-RS zero-power channel state information reference signal
- the CRS configuration information includes at least one of the following: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS;
- the zero-power CSI-RS configuration information includes at least one of the following: a resource position of the zero-power CSI-RS, The number of resource elements of the zero-power CSI-RS, the period of the zero-power CSI-RS, and the subframe offset;
- the non-zero-power CSI-RS configuration information includes at least one of the following: Number of ports of the non-zero-power CSI-RS, non-zero-power CSI - Resource location of the RS, period of the non-zero power CSI-RS, and subframe offset.
- a downlink data processing apparatus which is located at a user equipment (UE), and includes: a receiving module, configured to receive, by a base station, a user equipment (UE) configured by a base station by using a high layer signaling a set of resource indication information; an obtaining module, configured to receive a subframe sent by the base station, to obtain downlink authorization indication information in the subframe; and a selection module, configured to select, from the multiple sets of resource indication information, resource indication information that matches the downlink authorization indication information
- the resource indication information is used to indicate: the resource location where the interference exists, or the interference information corresponding to the resource location and the resource location; and the processing module is configured to perform interference processing on the downlink data sent to the UE at the resource location.
- the downlink grant control information includes at least one of the following: antenna port indication information, new data indication information of the invalid transport block, scrambling sequence indication information, aggregation level of downlink grant control information, and initial control channel of downlink grant control information.
- the obtaining module includes: a parsing unit configured to perform blind detection on the subframe and parse the downlink grant information; and the acquiring unit is configured to perform blind detection on the downlink data corresponding to the UE indicated by the downlink grant information, and obtain a downlink grant indication information.
- the processing module prohibits receiving the downlink data at the resource location; or the processing module learns that the base station does not map the data on the resource corresponding to the resource location, where the mapping is not mapped.
- the data includes: not mapping the physical downlink shared channel data; or, the processing module performs rate matching on the resource location after the base station does not map the data on the resource corresponding to the resource location, where the unmapped data includes: Channel data.
- the resource location includes at least one of the following: a physical downlink shared channel (PDSCH), a start position of the time domain OFDM symbol, a multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to the resource location, and a cell-specific reference signal ( CRS) Configuration information, zero-power CSI-RS configuration information, non-zero power CSI-RS configuration information, period and subframe offset of zero-power CSI-RS, period of non-zero-power CSI-RS, and subframe offset.
- PDSCH physical downlink shared channel
- MMSFN multicast broadcast single frequency network
- CRS cell-specific reference signal
- the processing module receives the downlink data at the resource location, and performs interference cancellation on the downlink data according to the interference information corresponding to the resource location.
- the interference information corresponding to the resource location and the resource location includes at least one of the following: location information of a resource element that needs to cancel interference, cell-specific reference signal (CRS) configuration information, and zero-power channel state information reference signal (CSI-RS)
- CRS cell-specific reference signal
- CSI-RS zero-power channel state information reference signal
- the CRS configuration information includes at least one of the following: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS;
- the zero-power CSI-RS configuration information includes at least one of the following: a resource position of the zero-power CSI-RS, The number of resource elements of the zero-power CSI-RS, the period of the zero-power CSI-RS, and the subframe offset;
- the non-zero-power CSI-RS configuration information includes at least one of the following: number of ports of the non-zero-power CSI-RS, non-zero-power CSI - Resource location of the RS, period of the non-zero power CSI-RS, and subframe offset.
- a downlink data processing indication device where the base station includes: a configuration module, configured to configure, by using user-specific high-layer signaling, a plurality of resource indication information for a user equipment (UE); And the indication module is configured to: after the UE selects the resource indication information that matches the downlink authorization indication information from the multiple sets of resource indication information, the UE is configured to instruct the UE to use the resource indication information according to the resource indication information.
- the resource indication information is used to indicate: a resource location where the interference exists, or interference information corresponding to the resource location and the resource location.
- the downlink authorization indication information includes at least one of the following: antenna port indication information, new data indication information of the invalid transmission block, scrambling sequence indication information, aggregation level of downlink authorization control information, and initial control channel of downlink authorization control information.
- the sending module includes: a sending unit, configured to carry the downlink grant information in a physical downlink control channel (PDCCH) region or an enhanced physical downlink control channel (EPDCCH) region on the subframe, and send the subframe to the UE, where
- the downlink grant information is used to indicate that the subframe has downlink data corresponding to the UE.
- the resource location includes at least one of the following: a physical downlink shared channel (PDSCH), a start position of the time domain OFDM symbol, a multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to the resource location, and a cell-specific reference signal ( CRS) Configuration information, zero-power CSI-RS configuration information, non-zero power CSI-RS configuration information, period and subframe offset configuration for zero-power CSI-RS, period of non-zero power CSI-RS, and subframe offset configuration.
- PDSCH physical downlink shared channel
- MMSFN multicast broadcast single frequency network
- CRS cell-specific reference signal
- the interference information corresponding to the resource location and the resource location includes at least one of the following: a cell-specific reference signal (CRS) configuration information, a zero-power channel state information reference signal (CSI-RS) configuration information, and a non-zero power CSI-RS configuration.
- CRS cell-specific reference signal
- CSI-RS zero-power channel state information reference signal
- PDSCH Physical Downlink Shared Channel
- MBSFN multicast broadcast single frequency network
- the CRS configuration information includes at least one of the following: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS;
- the zero-power CSI-RS configuration information includes at least one of the following: a resource position of the zero-power CSI-RS, The number of resource elements of the zero-power CSI-RS, the period of the zero-power CSI-RS, and the subframe offset;
- the non-zero-power CSI-RS configuration information includes at least one of the following: number of ports of the non-zero-power CSI-RS, non-zero-power CSI - Resource location of the RS and period and subframe offset of the non-zero power CSI-RS.
- the UE performs the interference avoidance or the interference cancellation on the downlink data sent to the UE according to the downlink grant control information according to the downlink grant control information in the subframe received by the UE, and solves the CRS and PDSCH of different nodes.
- the problem that the starting position is not aligned and the influence of CSI-RS on data demodulation performance can realize coordinated transmission for one UE between different nodes (including: joint transmission, joint scheduling, joint beamforming, dynamic node selection)
- joint transmission, joint scheduling, joint beamforming, dynamic node selection including: joint transmission, joint scheduling, joint beamforming, dynamic node selection
- FIG. 1 is a flowchart of a downlink data processing method according to an embodiment of the present invention
- FIG. 2 is a flowchart of a downlink data processing indication method according to an embodiment of the present invention
- FIG. 3 is a user equipment according to an embodiment of the present invention
- FIG. 4 is a structural block diagram of a downlink data processing apparatus located in a user equipment according to a preferred embodiment of the present invention
- FIG. 1 is a flowchart of a downlink data processing method according to an embodiment of the present invention
- FIG. 2 is a flowchart of a downlink data processing indication method according to an embodiment of the present invention
- FIG. 3 is a user equipment according to an embodiment of the present invention
- FIG. 4 is a structural block diagram of a downlink data processing apparatus located in a user equipment according to a preferred embodiment of the present invention
- FIG. 5 is a structural diagram of a downlink data processing indication apparatus located in a base station according to an embodiment of the present invention
- Figure 6 is a block diagram showing the structure of a downlink data processing indication device located at a base station according to a preferred embodiment of the present invention.
- Step S102 A user equipment (UE) receives a base station through higher layer signaling. Multiple sets of resource indication information configured by the base station for the UE to be sent.
- Step S104 The UE receives the subframe sent by the base station, and acquires downlink authorization indication information in the subframe.
- Step S106 The UE selects the resource indication information that is matched with the downlink authorization indication information from the multiple sets of resource indication information, where the resource indication information is used to indicate: the resource location where the interference exists, or the interference information corresponding to the resource location and the resource location.
- Step S108 The UE performs interference processing on the downlink data sent to the UE at the resource location.
- the downlink authorization control information includes at least one of the following: antenna port indication information, new data indication information of the invalid transmission block, scrambling sequence indication information, aggregation level of downlink authorization control information, and downlink authorization.
- CCE start control channel element
- the downlink authorization control information may include: DCI (Downlink Control Information) formatl, DCI formatla, DCI formatlb, DCI formatlc, DCI formatld, DCI format2, DCI format2a, DCI format2b, DCI format2c and later
- the version of the downlink authorization control information controls one or more of the formats.
- the antenna port indication information may include: DCI format 2b, DCI format 2c and later versions of the downlink grant control information control format of one or more antenna port indication related information.
- the new data indication information of the invalid transport block may include: DCI format 2b, DCI format 2c and later versions of the downlink grant control information control format of one or more new data indication related information.
- the PDCCH and aggregation level in the user-specific search space may include: DCI formatl, DCI formatla, DCI formatlb, DCI formatlc, DCI formatld, DCI format2, DCI format2a, DCI format2b, DCI format2c and later versions of the downlink grant control information control format One or more of one or more user-specific search spaces and aggregation levels.
- the subframe number of the downlink authorization control information may include: DCI formatl, DCI formatla, DCI formatlb, DCI formatlc, DCI formatld, DCI format2, DCI format2a, DCI format2b, DCI format 2c and later versions of the downlink grant control information control the subframe number of one or more subframes in which the frame is located.
- step S102 may be implemented as follows: The UE receives multiple sets of resource indication information that the base station configures for the UE by using user-specific high-layer signaling.
- the UE receives the subframe sent by the base station, and includes: the base station carries the downlink grant information in a physical downlink control channel (PDCCH) region or an enhanced physical downlink control channel (EPDCCH) region on the subframe, and sends the subframe to the subframe.
- the base station carries the downlink grant information in a physical downlink control channel (PDCCH) region or an enhanced physical downlink control channel (EPDCCH) region on the subframe, and sends the subframe to the subframe.
- PDCCH physical downlink control channel
- EPDCCH enhanced physical downlink control channel
- the obtaining the downlink authorization indication information in the subframe includes: the UE performs blind detection on the subframe, and parses the downlink authorization information; performs blind detection on the downlink data corresponding to the UE indicated by the downlink authorization information, and obtains a downlink authorization indication. information.
- the UE when the resource indication information is used to indicate that the resource location of the interference exists, the UE performs interference processing on the downlink data that is sent to the UE at the resource location, including: the UE prohibits receiving at the resource location.
- the resource location may include at least one of the following: a time domain OFDM symbol start position of a physical downlink shared channel (PDSCH), a multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to a resource location, and a cell-specific Number of ports for reference signal (CRS), zero-power CSI-RS configuration information, non-zero-power CSI-RS configuration information, period and subframe offset for zero-power CSI-RS, period of non-zero-power CSI-RS, and subframe offset .
- PDSCH physical downlink shared channel
- MBSFN multicast broadcast single frequency network
- CRS cell-specific Number of ports for reference signal
- the UE when the resource indication information is used to indicate: the resource location and the interference information corresponding to the resource location, the UE performs interference processing on the downlink data sent to the UE at the resource location, including: the UE is in the resource.
- the downlink data is received at the location; the UE performs interference cancellation on the downlink data according to the interference information corresponding to the resource location.
- the interference information corresponding to the resource location and the resource location includes at least one of the following: a cell-specific reference signal (CRS) configuration information, a zero-power channel state information reference signal (CSI-RS), or a non-zero-power CSI-RS.
- the CRS configuration information includes at least one of the following: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS;
- the zero-power CSI-RS configuration information includes at least one of the following: a resource position of the zero-power CSI-RS, The number of resource elements of the zero-power CSI-RS, the period of the zero-power CSI-RS, and the subframe offset;
- the non-zero-power CSI-RS configuration information includes at least one of the following: number of ports of the non-zero-power CSI-RS, non-zero-power CSI - Resource location of the RS, period of the non-zero power CSI-RS, and subframe offset.
- FIG. 2 is a flowchart of a downlink data processing indication method according to an embodiment of the present invention.
- the method mainly includes the following steps (step S202-step S206):
- step S202 A base station sends a user equipment (UE) through high layer signaling. Sending multiple sets of resource indication information configured by the base station for the UE.
- Step S204 The base station sends a downlink subframe carrying the downlink grant indication information to the UE.
- Step S206 After the UE selects the resource indication information that matches the downlink grant indication information from the multiple sets of resource indication information, the base station instructs the UE to perform interference processing on the downlink data according to the resource indication information, where the resource indication information is used to indicate: Interference resource location, or interference information corresponding to resource location and resource location.
- the downlink authorization indication information includes at least one of the following: antenna port indication information, new data indication information of the invalid transmission block, scrambling sequence indication information, aggregation level of downlink authorization control information, and downlink authorization.
- the step S202 may be implemented in the following steps: the base station sends the multiple sets of resource indication information configured for the UE to the UE by using the user-specific high-layer signaling; the step S204 may be implemented: the physical of the base station in the subframe
- the downlink control channel (PDCCH) region or the enhanced physical downlink control channel (EPDCCH) region carries the downlink grant information, and the subframe is sent to the UE, where the downlink grant information is used to indicate that the subframe has downlink data corresponding to the UE.
- the process of the base station instructing the UE to perform interference processing on the downlink data according to the resource indication information may be implemented by: the base station indicating that the UE is in the resource location.
- the base station is configured to notify the UE that the base station does not map data on the resource corresponding to the resource location, and the unmapped data includes: not mapping the physical downlink shared channel data; or, the base station notifying the UE that the base station is in the resource location After the data is not mapped on the resource, the UE is instructed to perform rate matching on the resource location, where the unmapped data includes: the physical downlink shared channel data is not mapped.
- the resource location includes at least one of the following: a time domain OFDM symbol start position of a physical downlink shared channel (PDSCH), a multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to a resource location, and a cell-specific reference.
- Signal (CRS) configuration information zero-power CSI-RS configuration information, non-zero power CSI-RS configuration information, period and subframe offset of zero-power CSI-RS, period of non-zero-power CSI-RS, and subframe offset.
- the process of the base station instructing the UE to perform interference processing on the downlink data sent to the UE at the resource location may be performed.
- the base station instructs the UE to receive downlink data at the resource location; the base station instructs the UE to perform interference cancellation on the downlink data according to the interference information corresponding to the resource location.
- the interference information corresponding to the resource location and the resource location includes at least one of the following: a cell-specific reference signal (CRS) configuration information, a zero-power channel state information reference signal (CSI-RS) configuration information, and a non-zero power CSI- Configuration information of the RS, a starting position of the physical downlink shared channel PDSCH time domain OFDM symbol, and a multicast broadcast single frequency network MBSFN subframe configuration information corresponding to the resource location.
- CRS cell-specific reference signal
- CSI-RS zero-power channel state information reference signal
- the CRS configuration information includes at least one of the following: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS;
- the zero-power CSI-RS configuration information includes at least one of the following: a resource of zero-power CSI-RS Position, number of resource elements of zero-power CSI-RS, period of zero-power CSI-RS, and subframe offset;
- non-zero-power CSI-RS configuration information includes at least one of: number of ports of non-zero-power CSI-RS, non-zero Resource location of power CSI-RS, period of non-zero power CSI-RS, and subframe offset.
- the resource location with the interference is simply referred to as a resource location, and the resource location and the resource location are corresponding.
- the interference information is called the resource location and the interference information of the corresponding location.
- the preferred embodiment 1 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of corresponding locations) for UE1 through high layer signaling, and then on the subframe in which downlink service of UE1 needs to be scheduled.
- the PDCCH region or the EPDCCH region sends DL_Grant (ie, downlink grant) information to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the DL_Grant, and the UE1 according to the indication information in the DL_Gnmt (in practical application)
- the bit data is in the form of bit data, and the bit data is used to indicate the format of the downlink grant control information.
- the antenna port indication information in the DCI (Downlink Control Information) Format 2C is obtained by blind detection to determine the configuration of the base station. Set of the resource location (or, the location of the resource and the interference information of the corresponding location).
- the UE may use the rate matching to not receive the downlink data at the resource location, or after obtaining the interference information of the resource location and the corresponding location, receiving the downlink data at the resource location, and then using the interference information of the corresponding location.
- Interference cancellation is performed on the corresponding resource on the subframe (ie, the resource generating the interference).
- the preferred embodiment 2 assumes that the UE1 is the user of the R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) for the UE1 through the high layer signaling, and then on the subframe in which the downlink service of the UE1 needs to be scheduled.
- the PDCCH region or the EPDCCH region sends the DL_Grant information to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE may use the rate matching to not receive the downlink data at the corresponding resource location or receive the downlink data on the corresponding resource and use the corresponding interference information to interfere with the corresponding resource. offset.
- the preferred embodiment 3 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource locations and interference information of corresponding locations) of UE1 through high-layer signaling, and then performs PDCCH on the subframe in which downlink traffic of UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant. Then, the UE1 obtains the new data indication information and the antenna port indication information in the Disable TB block in the DCI Format 2C by blind detection to determine which of the multiple resource locations (or the resource location and the interference information of the corresponding location) configured by the base station. set.
- the third set of resource locations (or the interference information of the resource location and the corresponding location) is selected, and the UE1 obtains the DL_Gnmt one layer transmission according to the blind detection and the invalid TB
- the fourth set of resource locations (or the resource location and the interference information of the corresponding location) is selected.
- the UE may use the rate matching to not receive the downlink data at the corresponding resource location or receive the downlink data on the corresponding resource and use the corresponding interference information to interfere with the corresponding resource. offset.
- the preferred embodiment 4 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high-layer signaling, and then performs PDCCH on the subframe in which the downlink service of UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- Location interference information ).
- the preferred embodiment 5 assumes that the UE1 is the user of the R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high-layer signaling, and then on the PDCCH in the subframe in which the downlink service of the UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE1 obtains new data indication information and antenna port indication information and scrambling code sequence indication information in the Disable TB block in the DCI Format 2C by blind detection to determine multiple resource locations (or resource locations and locations configured by the base station). Corresponding position Which of the interference information). Assume that UE1 is a user of R11, and the base station side configures multiple sets of downlink DMRS virtual signaling of UE1 through high-layer signaling, and then sends DL_Grant in the PDCCH or EPDCCH region to indicate that the current subframe exists in the subframe in which the downlink service of UE1 needs to be scheduled. The downlink data of UE1, UE1 performs blind detection on the subframe to obtain indication information in DL_Grant.
- the UE1 obtains the new data indication information and the scrambling code sequence indication information N seI) in the Disable TB block in the DCI Format 2C by blind detection to determine the multiple resource locations (or the resource location and the interference information of the corresponding location ) configured by the base station. Which one of them?
- the fourth set of resource locations (or the interference information of the resource location and the corresponding location) is selected.
- the preferred embodiment 6 assumes that the UE1 is the user of the R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high layer signaling, and then on the PDCCH in the subframe in which the downlink service of the UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant. Then, the UE1 determines the location of the initial CCE where the DL_Gnmt is placed according to the blind detection to determine the multiple resource locations (or the resource location and the interference information of the corresponding location) configured by the base station.
- the preferred embodiment 7 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high layer signaling, and then on the subframe in which the downlink service of UE1 needs to be scheduled.
- the PDCCH region or the EPDCCH region sends a DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE1 determines, according to the blind detection, the position and aggregation level of the starting CCE where the DL_Gnmt is placed to determine which one of the multiple resource positions (or the resource location and the interference information of the corresponding location) configured by the base station.
- the preferred embodiment 8 assumes that the UE1 is the user of the R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high layer signaling, and then on the PDCCH in the subframe in which the downlink service of the UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE1 determines, according to the blind detection, the location of the initial CCE where the DL_Gnmt is placed and the newly added 1 bit of the detected resource location and interference information in the detected DCI to determine multiple resource locations (or resource locations and corresponding locations) configured by the base station. Which of the interference information).
- the preferred embodiment 9 assumes that the UE1 is the user of the R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high layer signaling, and then on the PDCCH in the subframe in which the downlink service of the UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends a DL_Grant to indicate that the number of downlinks of the UE1 exists in the current subframe.
- the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE1 determines, according to the blind detection, the position of the initial CCE where the DL_Gnmt is placed and the scrambling code sequence indication information N SCID to determine which one of the multiple resource positions (or the resource location and the interference information of the corresponding location) configured by the base station is used. .
- the second set of resource locations or the resource location and the interference information of the corresponding location
- the preferred embodiment 10 assumes that the UE1 is the user of the R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high layer signaling, and then on the PDCCH in the subframe in which the downlink service of the UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE1 determines, according to the blind detection, the location, the aggregation level, and the scrambling sequence indication information N SCID of the initial CCE where the DL_Gnmt is placed to determine the multiple resource locations (or the interference information of the resource location and the corresponding location) configured by the base station. Which one.
- the preferred embodiment 11 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource locations and interference information of corresponding locations) of UE1 through high-layer signaling, and then performs PDCCH on a subframe in which downlink traffic of UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE1 determines, according to the blind detection, the location of the initial CCE where the DL_Gnmt is placed and the new data indication information NDI in the invalid TB signaling to determine multiple sets of resource locations (or resource location and interference information of the corresponding location) configured by the base station. Which one?
- the fourth set of resource locations (or the resource location and the interference information of the corresponding location) are selected.
- the preferred embodiment 12 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high layer signaling, and then on the PDCCH in the subframe in which the downlink service of UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant. Then, the UE1 obtains the location of the initial CCE where the DL_Gnmt is placed, the aggregation level, and the new data indication information NDI in the invalid TB signaling according to the blind detection to determine the multiple resource locations (or the resource location and the corresponding location interference) configured by the base station. Which of the information).
- the eighth set of resource locations (or the resource location and the interference information of the corresponding location) are selected.
- the preferred embodiment 13 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of the corresponding location) of the UE1 through high-layer signaling, and then performs PDCCH on the subframe in which the downlink service of UE1 needs to be scheduled.
- the PDCCH or the EPDCCH region sends the DL_Grant to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL Grant. Then UE1 is obtained according to blind detection.
- the position of the starting CCE of the DL_Gnmt, the aggregation level, and the subframe and/or system frame number in which the DL_Gnmt is placed to determine which of the multiple resource locations (or the interference locations of the resource locations and corresponding locations) configured by the base station is used. .
- each resource indication parameter may select a combination of different high-level configurations, for example, interference information indicating a first resource location and/or a corresponding location.
- the UE needs to perform rate matching and/or interference cancellation according to the resource configuration of the resource location information 1 and the interference information of the corresponding location; and the resource indicating the second resource location and/or the corresponding location, the UE needs the resource according to the resource location information 2 Configuring interference information of the corresponding location for rate matching and/or interference cancellation; indicating interference information of the third resource location and/or the corresponding location, the UE needs to perform rate according to the resource configuration of the resource location information 3 and the interference information of the corresponding location Matching and/or interference cancellation; indicating interference information of the fourth resource location and/or the corresponding location, the UE needs to perform rate matching and/or interference cancellation according to the resource configuration of the resource location information ⁇ 1, 2 ⁇ and the interference information of the corresponding location.
- the UE indicating the interference information of the fifth resource location and/or the corresponding location, then the UE needs to follow the resource location information ⁇ 1 3 ⁇ resource configuration and interference information of the corresponding location for rate matching and/or interference cancellation; indicating interference information of the sixth resource location and/or the corresponding location, then the UE needs to configure resource according to the resource location information ⁇ 2, 3 ⁇
- the interference information of the corresponding location is used for rate matching and/or interference cancellation; the interference information indicating the seventh resource location and/or the corresponding location is required by the UE according to the resource configuration of the resource location information ⁇ 1, 2, 3 ⁇ and the interference of the corresponding location Information for rate matching and/or interference cancellation.
- the notification of the resource configuration and the transmission mode may be combined, as shown in Table 3.
- CSI-RS configuration information non-zero power CSI-RS configuration information.
- Table 3 resource indication information and resource information and transmission mode correspondence table
- the preferred embodiment 15 assumes that UE1 is a user of R11, and the base station side configures multiple sets of resource locations (or resource location and interference information of corresponding locations) for UE1 through high layer signaling, and then on the subframe in which downlink service of UE1 needs to be scheduled.
- the PDCCH region or the EPDCCH region sends the DL_Grant information to indicate that the downlink data of the UE1 exists in the current subframe, and the UE1 performs blind detection on the subframe to obtain the indication information in the DL_Grant.
- the UE1 obtains the 2-bit preset bit in the DL_Grant DCI Format 2D by blind detection to determine which one of the multiple resource positions (or the resource location and the interference information of the corresponding location) configured by the base station is used. For example, UE1 selects the first resource location when the 2-bit preset bit in DL_Grant is 00 according to the blind detection; UE1 selects the second resource location when the 2-bit preset bit in DL_Grant is 01 according to the blind detection. UE1 selects the third resource location when the 2-bit preset bit in DL_Grant is 10 according to the blind check. The UE1 selects the fourth resource location when the 2-bit preset bit in the DL_Grant is 11 according to the blind check.
- the UE may use the rate matching to not receive the downlink data at the corresponding resource location or assume that the base station does not map the PDSCH at the corresponding location or the terminal considers that the base station does not map the PDSCH at the corresponding location. And performing rate matching on the corresponding location to receive the PDSCH.
- the resource location includes at least one of the following: a physical downlink shared channel PDSCH, a start position of a time domain OFDM symbol, a multicast broadcast single frequency network MBSFN subframe configuration information corresponding to a resource location, and a configuration of a cell-specific reference signal CRS.
- the zero-power CSI-RS configuration information includes at least one of: a resource position of a zero-power CSI-RS, a number of resource elements of a zero-power CSI-RS, a period of a zero-power CSI-RS, and a subframe offset.
- the non-zero power CSI-RS configuration information includes at least one of the following: a port number of the non-zero power CSI-RS, a resource position of the non-zero power CSI-RS, a period of the non-zero power CSI-RS, and a subframe offset.
- the CRS configuration information includes one of the following: the number of ports of the CRS, the cell identifier corresponding to the CRS, and the transmission power of the CRS.
- the non-zero power CSI-RS configuration information and the CRS configuration information may also be used to indicate time-frequency synchronization when the terminal demodulates.
- the downlink data processing method and the downlink data processing indication method provided by the foregoing embodiments avoid the CRS and PDSCH start position misalignment of different nodes, and the influence of CSI-RS on data demodulation performance, and can implement different nodes.
- a UE performs cooperative transmission (including: joint transmission, joint scheduling, joint beamforming, dynamic node selection), thereby achieving the effect of reducing resource waste and avoiding interference of control domain or pilot to data demodulation.
- 3 is a structural block diagram of a downlink data processing apparatus located in a user equipment according to an embodiment of the present invention. The apparatus is applied to a user equipment (UE), and is used to implement the downlink data processing method provided by the foregoing embodiment, as shown in FIG.
- UE user equipment
- the device mainly includes: a receiving module 10, an obtaining module 20, a selecting module 30, and a processing module 40.
- the storage module 10 is configured to receive, by the base station, the multiple sets of resource indication information configured by the base station for the user equipment (UE), and the acquiring module 20 is connected to the receiving module 10, and is configured to receive the subframe sent by the base station.
- UE user equipment
- the selecting module 30 is connected to the obtaining module 20, and is set to be more than The resource indication information is used to select the resource indication information that is matched with the downlink authorization indication information, where the resource indication information is used to indicate: the resource location where the interference exists, or the interference information corresponding to the resource location and the resource location; the processing module 40, connected to The selecting module 30 is configured to perform interference processing on the downlink data sent to the UE at the resource location.
- the downlink authorization control information includes at least one of the following: an antenna port indication information, a new data indication information of an invalid transmission block, a scrambling code sequence indication information, an aggregation level of downlink authorization control information, and a start of downlink authorization control information.
- Control channel unit (CCE) location preset bits.
- 4 is a structural block diagram of a downlink data processing apparatus located in a user equipment according to a preferred embodiment of the present invention.
- the obtaining module 20 includes: a parsing unit 22 configured to perform blind detection on a subframe and parse the downlink grant.
- the information obtaining unit 24 is connected to the parsing unit 22, and configured to perform blind detection on the downlink data corresponding to the UE indicated by the downlink authorization information, and obtain downlink authorization indication information.
- the processing module when the resource indication information is used to indicate that the resource location of the interference exists, the processing module prohibits receiving the downlink data at the resource location; or the processing module learns that the base station does not allocate resources corresponding to the resource location.
- Mapping data where the unmapped data includes: not mapping the physical downlink shared channel data; or, the processing module performs rate matching on the resource location after knowing that the base station does not map the data on the resource corresponding to the resource location, where the data is not mapped. Including: Do not map physical downlink shared channel data.
- the resource location includes at least one of the following: a physical downlink shared channel (PDSCH), a start position of a time domain OFDM symbol, a multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to a resource location, and a cell-specific reference.
- PDSCH physical downlink shared channel
- MMSFN multicast broadcast single frequency network
- CRS Signal
- zero-power CSI-RS configuration information zero-power CSI-RS configuration information
- non-zero power CSI-RS configuration information period and subframe offset of zero-power CSI-RS, period of non-zero-power CSI-RS, and subframe offset.
- the processing module when the resource indication information is used to indicate: the resource location and the interference information corresponding to the resource location, the processing module receives the downlink data at the resource location, and uses the interference information corresponding to the resource location to the downlink data. Perform interference cancellation.
- the interference information corresponding to the resource location and the resource location includes at least one of the following: location information of a resource element that needs to cancel interference, cell-specific reference signal (CRS) configuration information, and zero-power channel state information reference signal (CSI) -RS) Configuration information, configuration information of the non-zero power CSI-RS, the starting position of the physical downlink shared channel PDSCH time domain OFDM symbol, and the multicast broadcast single frequency network MBSFN subframe configuration information corresponding to the resource location.
- CRS cell-specific reference signal
- CSI zero-power channel state information reference signal
- the CRS configuration information includes at least one of: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS; and the zero-power CSI-RS configuration information includes at least one of the following: a zero-power CSI-RS Resource location, number of resource elements of zero-power CSI-RS, period of zero-power CSI-RS, and subframe offset; non-zero-power CSI-RS configuration information includes at least one of the following: number of ports of non-zero-power CSI-RS, non- Resource position of zero-power CSI-RS, period of non-zero-power CSI-RS, and subframe offset.
- the device mainly includes : Configuration module 50, transmitting module 60 and indicating module 70.
- the configuration module 50 is configured to configure multiple resource indication information for the user equipment (UE) by using the user-specific high-layer signaling.
- the sending module 60 is connected to the configuration module 50, and is configured to send the downlink with the downlink authorization indication information to the UE.
- the sub-frame; the instructing module 70 is connected to the sending module 60, and is configured to: after the UE selects the resource indication information that matches the downlink grant indication information from the multiple sets of resource indication information, instruct the UE to perform interference processing on the downlink data according to the resource indication information.
- the resource indication information is used to indicate: a resource location where there is interference, or interference information corresponding to the resource location and the resource location. In an actual application, the resource indication information is used to indicate: the antenna port indication information, the new data indication information of the invalid transmission block, the scrambling code sequence indication information, the aggregation level of the downlink authorization control information, and the initial control channel unit of the downlink authorization control information.
- FIG. 6 is a structural block diagram of a downlink data processing indication device located in a base station according to a preferred embodiment of the present invention.
- the sending module 60 includes: a sending unit 62, configured as a physical downlink control channel (PDCCH) in a subframe.
- the area or the enhanced physical downlink control channel (EPDCCH) area carries the downlink grant information, and the subframe is sent to the UE, where the downlink grant information is used to indicate that the subframe has downlink data corresponding to the UE.
- PDCH physical downlink control channel
- EPDCCH enhanced physical downlink control channel
- the resource location includes at least one of the following: a physical downlink shared channel (PDSCH), a start position of the time domain OFDM symbol, and a multicast broadcast single frequency network (MBSFN) subframe configuration corresponding to the resource location.
- Information Cell-Specific Reference Signal (CRS) configuration information, zero-power CSI-RS configuration information, non-zero-power CSI-RS configuration information, zero-power CSI-RS period and subframe offset configuration, non-zero-power CSI-RS period And sub-frame offset configuration.
- CRS Cell-Specific Reference Signal
- the interference information corresponding to the resource location and the resource location includes at least one of the following: cell-specific reference signal (CRS) configuration information, configuration information of a zero-power channel state information reference signal (CSI-RS) The configuration information of the non-zero-power CSI-RS, the start position of the physical downlink shared channel (PDSCH) time domain OFDM symbol, and the multicast broadcast single frequency network (MBSFN) subframe configuration information corresponding to the resource location.
- CRS cell-specific reference signal
- CSI-RS zero-power channel state information reference signal
- the configuration information of the non-zero-power CSI-RS the start position of the physical downlink shared channel (PDSCH) time domain OFDM symbol
- MBSFN multicast broadcast single frequency network
- the CRS configuration information may include at least one of the following: a port number of the CRS, a cell identifier corresponding to the CRS, and a transmit power of the CRS;
- the zero-power CSI-RS configuration information includes at least one of the following: The resource location of the CSI-RS, the number of resource elements of the zero-power CSI-RS, the period of the zero-power CSI-RS, and the subframe offset;
- the non-zero-power CSI-RS configuration information includes at least one of the following: a non-zero-power CSI-RS Number of ports, resource location of non-zero power CSI-RS, period of non-zero power CSI-RS, and subframe offset.
- the downlink data processing apparatus and the downlink data processing indication apparatus avoid the CRS and PDSCH start position misalignment of different nodes, and the influence of CSI-RS on data demodulation performance, and can implement different nodes.
- a UE performs cooperative transmission (including: joint transmission, joint scheduling, joint beamforming, dynamic node selection), thereby achieving the effect of reducing resource waste and avoiding interference of control domain or pilot to data demodulation. From the above description, it can be seen that the following technical effects are achieved by the following: The UE uses the downlink grant control information in the subframe received by the UE to perform interference avoidance on the downlink data sent to the UE according to the downlink grant control information.
- the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
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US14/373,235 US9788330B2 (en) | 2012-01-19 | 2013-01-10 | Method and device for processing and indicating downlink data |
JP2014552495A JP5977368B2 (ja) | 2012-01-19 | 2013-01-10 | 下りデータ処理、指示方法及び装置 |
EP13738006.9A EP2804436B1 (en) | 2012-01-19 | 2013-01-10 | Method and device for processing and indicating downlink data |
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CN201210017706.XA CN103220802B (zh) | 2012-01-19 | 2012-01-19 | 下行数据处理方法及装置 |
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Cited By (6)
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EP2804436B1 (en) | 2019-10-09 |
EP2804436A4 (en) | 2015-06-03 |
EP2804436A1 (en) | 2014-11-19 |
JP5977368B2 (ja) | 2016-08-24 |
CN103220802B (zh) | 2019-04-05 |
CN103220802A (zh) | 2013-07-24 |
US20140369293A1 (en) | 2014-12-18 |
US9788330B2 (en) | 2017-10-10 |
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