WO2014201644A1 - Procédé et dispositif de coordination d'interférences - Google Patents

Procédé et dispositif de coordination d'interférences Download PDF

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Publication number
WO2014201644A1
WO2014201644A1 PCT/CN2013/077490 CN2013077490W WO2014201644A1 WO 2014201644 A1 WO2014201644 A1 WO 2014201644A1 CN 2013077490 W CN2013077490 W CN 2013077490W WO 2014201644 A1 WO2014201644 A1 WO 2014201644A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
antenna port
demodulation reference
mapping relationship
identifier
Prior art date
Application number
PCT/CN2013/077490
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English (en)
Chinese (zh)
Inventor
吴海
吴作敏
张宁波
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/077490 priority Critical patent/WO2014201644A1/fr
Priority to CN201380002230.5A priority patent/CN104995975B/zh
Publication of WO2014201644A1 publication Critical patent/WO2014201644A1/fr

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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for interference coordination. Background technique
  • the Long Term Evolution (LTE) project is an evolution of the Third Generation Telecommunication (3G) system. It improves and enhances the 3G air access technology, using Orthogonal Frequency Division. Orthogonal Frequency Division Multiplexing (OFDM) and Multi-Piece and Multiple Output (MIMO) are the only standards for the evolution of wireless networks in LTE systems.
  • OFDM Orthogonal Frequency Division Multiplexing
  • MIMO Multi-Piece and Multiple Output
  • DCI Downlink Control Information
  • the DCI carries information necessary for demodulating data in the Physical Downlink Shared Channel (PDSCH), such as modulation and coding methods, resource allocation locations, and the like.
  • the LTE defines a variety of transmission mode common downlink data transmission.
  • the base station configures the current UE in which transmission mode by using high layer signaling.
  • the base station can select one of the DCI formats in the transmission mode on the PDCCH channel. In this case, two possible DCIs need to be blindly detected on the PDCCH channel, so that the information of the data on the PDSCH is further demodulated by the detected DCI.
  • the ME9 is generally based on the DCI format 2C and the TM 10 based on the DCI format 2D corresponding transmission mode.
  • each layer can transmit up to 8 layers of data, each layer of data.
  • the transmissions correspond to one antenna port.
  • Demodulation Reference Signal (DMRS) pilots are present in each data resource block for channel estimation and demodulation of data.
  • DMRS pilots of the cells occupy the same resource location, when channel estimation is performed on the antenna port corresponding to a certain layer of a certain UE, the neighboring cell, the neighboring user of the local cell, or the antenna of other layers of the user may be received.
  • Interference of the port in the prior art, the method of orthogonally using the antenna port is adopted to avoid interference generated during channel estimation.
  • the method for avoiding interference in the prior art is applicable to only two users or two cells in avoiding interference between the neighboring cell and the neighboring user of the local cell, and the interference that can be circumvented is limited. Summary of the invention
  • Embodiments of the present invention provide a method and apparatus for interference coordination, which effectively reduces interference between more cells and cells in a data transmission process.
  • a method for interference coordination including:
  • the first user equipment acquires a first mapping relationship, where the first mapping relationship is a correspondence between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier; the transcoding identifier is used to indicate demodulation The serial number of the reference signal;
  • the first base station And receiving, by the first base station, the downlink control information, where the downlink control information includes: information of the first code block and information of the second code block;
  • the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is used, using a preset length solution according to the channel indication value, the first mapping relationship, and the sequence number of the demodulation reference signal
  • the reference signal scrambling code sequence is used for channel estimation; and the transmission data is demodulated and decoded according to the channel estimation value.
  • the acquiring, by the first user equipment, the first mapping relationship includes:
  • the method further includes:
  • the currently used antenna port and the transcoding identifier are obtained according to the downlink control information and the first mapping relationship;
  • the transmission data is demodulated and decoded according to a channel estimation value.
  • the length of the demodulation reference signal scrambling sequence is used for channel estimation, including:
  • the new data indication value indicates that the demodulation reference signal scrambling sequence of the limited length is used, acquiring the currently used antenna port and the transcoding identifier according to the channel indication value and the first mapping relationship;
  • the demodulation reference of the preset length is used according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the method further includes: setting a resource location in the currently used antenna port to not transmit transmission data at a resource location that is the same as a resource location in another antenna port of the currently used antenna port; .
  • the method further includes:
  • the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is not used, acquiring the currently used antenna port and the transcoding identifier according to the downlink control information and the first mapping relationship;
  • the transmission data is demodulated and decoded according to a channel estimation value.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port, a data stream layer number, and a turn corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used.
  • the code identifier and the new data of the second code block indicate an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, a data stream layer number and a transcoding identifier, and two channel blocks, the channel indication
  • the antenna port corresponding to the value, the number of data stream layers, and the transcoding identifier; wherein the first mapping relationship is represented in the form of a mapping table.
  • the new data of the second code block is indicated as an antenna port corresponding to a channel indication value when a demodulation reference signal scrambling code sequence of a limited length is used. Including: Corresponding resource ports with the same resource location or all antenna ports.
  • a method for interference coordination including:
  • the first base station acquires a first mapping relationship, where the first mapping relationship is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier; the transcoding identifier is used to indicate a demodulation reference.
  • the serial number of the signal is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier; the transcoding identifier is used to indicate a demodulation reference.
  • the first information includes: but not limited to: an antenna port, a sequence number of the demodulation reference signal, and a subframe set; and the subframe set user indicates the any second base station The time at which the data was sent;
  • mapping relationship is a mapping relationship between a cell identifier, an antenna port, a sequence number of a demodulation reference signal, and a subframe mode
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port, a data stream layer number, and a turn corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used.
  • the code identifier and the new data of the second code block indicate an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, a data stream layer number and a transcoding identifier, and two channel blocks, the channel indication
  • the antenna port corresponding to the value, the number of data stream layers, and the transcoding identifier; wherein the first mapping relationship is represented in the form of a mapping table.
  • the new data of the second code block is indicated as an antenna port corresponding to a channel indication value when a demodulation reference signal scrambling code sequence of a limited length is used. Including: Corresponding resource ports with the same resource location or all antenna ports.
  • sequence numbers of all demodulation reference signals in the second mapping relationship are the same.
  • a first user equipment including:
  • a first acquiring unit configured to acquire a first mapping relationship, where the first mapping relationship is a correspondence between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier; Instructing a sequence number of the demodulation reference signal;
  • a receiving unit configured to receive a sequence number of the demodulation reference signal sent by the first base station, where the receiving unit is further configured to receive downlink control information that is sent by the first base station, where the downlink control information includes: Information of the first code block and information of the second code block;
  • the first obtaining unit is further configured to detect the downlink control information, and obtain the channel indication value;
  • a determining unit configured to determine, according to the downlink control information, a number of code blocks, where the first processing unit is configured to: when the number of the code blocks is one, detect the downlink control information to obtain a second code block New data indication value;
  • the first processing unit is further configured to: when the new data indication value indicates that a demodulation reference signal scrambling code sequence of a limited length is used, according to the channel indication value, the first mapping relationship, and the demodulation reference The serial number of the signal, using a preset length demodulation reference letter noisysy code sequence for channel estimation;
  • the first processing unit is further configured to perform demodulation and decoding on the transmission data according to the channel estimation value.
  • the first acquiring unit is specifically configured to:
  • the first user equipment further includes:
  • a second acquiring unit configured to acquire, when the number of the code blocks is two, an antenna port and a transcoding identifier that are currently used according to the downlink control information and the first mapping relationship;
  • the second processing unit is further configured to perform channel estimation according to the antenna port, the transcoding identifier, and a sequence number of the demodulation reference signal;
  • the second processing unit is further configured to perform demodulation and decoding on the transmission data according to a channel estimation value.
  • the first processing unit includes:
  • a processing subunit configured to perform channel estimation by using a preset length demodulation reference signal scrambling code sequence according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the first user equipment further includes:
  • a setting unit configured to not transmit the transmission data on the resource location in the currently used antenna port and the resource location in the other antenna port except the currently used antenna port.
  • the first user equipment further includes:
  • a third acquiring unit configured to: when the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is not used, obtain the currently used antenna port and the rotation according to the downlink control information and the first mapping relationship Code identification
  • a third processing unit configured to perform channel estimation according to the antenna port, the transcoding identifier, and a sequence number of the demodulation reference signal
  • the third processing unit is further configured to perform demodulation and decoding on the transmission data according to a channel estimation value.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port, a data stream layer number, and a turn corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used.
  • the code identifier and the new data of the second code block indicate an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, a data stream layer number and a transcoding identifier, and two channel blocks, the channel indication
  • the antenna port corresponding to the value, the number of data stream layers, and the transcoding identifier; wherein the first mapping relationship is represented in the form of a mapping table.
  • the new data of the second code block is indicated as an antenna port corresponding to a channel indication value when a demodulation reference signal scrambling code sequence of a limited length is used. Including: Corresponding resource ports with the same resource location or all antenna ports.
  • a first base station including:
  • An acquiring unit configured to obtain a first mapping relationship, where the first mapping relationship is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier; the transcoding identifier is used to indicate a solution Adjust the serial number of the reference signal;
  • a receiving unit configured to receive first information sent by any second base station, where the first information includes, but is not limited to: an antenna port, a sequence number of the demodulation reference signal, and a subframe set; the subframe set user indicates the a time at which the second base station sends data; the acquiring unit is further configured to: according to the first information and the first mapping relationship, Obtaining a second mapping relationship, where the second mapping relationship is a mapping relationship between a cell identifier, an antenna port, a sequence number of a demodulation reference signal, and a subframe mode;
  • a sending unit configured to send the sequence number of the demodulation reference signal to the first user equipment, where the sending unit is further configured to send downlink control information to the first user equipment, so that the first user equipment is configured according to the The first mapping relationship, the downlink control information, and the sequence number of the demodulation reference signal perform channel estimation on the transmission data to obtain an interference-free signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port, a data stream layer number, and a turn corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used.
  • the code identifier and the new data of the second code block indicate an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, a data stream layer number and a transcoding identifier, and two channel blocks, the channel indication
  • the antenna port corresponding to the value, the number of data stream layers, and the transcoding identifier; wherein the first mapping relationship is represented in the form of a mapping table.
  • the new data of the second code block is indicated as an antenna port corresponding to a channel indication value when a demodulation reference signal scrambling code sequence of a limited length is used. Including: Corresponding resource ports with the same resource location or all antenna ports.
  • sequence numbers of all demodulation reference signals in the second mapping relationship are the same.
  • a fifth aspect provides a first user equipment, including: at least one processor, a memory, a communication interface, and a bus, wherein the at least one processor, the memory, and the communication interface are connected by a bus and complete communication with each other, the memory Used to store program code, where:
  • the processor is configured to call program code in the memory to perform the following operations:
  • the first mapping relationship is between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier a mapping relationship; the transcoding identifier is used to indicate a sequence number of the demodulation reference signal; and the sequence number of the demodulation reference signal sent by the first base station is received by the at least one communication interface;
  • downlink control information that is sent by the first base station, where the downlink control information includes: information of a first code block and information of a second code block;
  • the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is used, using a preset length solution according to the channel indication value, the first mapping relationship, and the sequence number of the demodulation reference signal
  • the reference signal scrambling code sequence is used for channel estimation; and the transmission data is demodulated and decoded according to the channel estimation value.
  • the processor is specifically configured to:
  • the processor is further configured to:
  • the currently used antenna port and the transcoding identifier are obtained according to the downlink control information and the first mapping relationship;
  • the transmission data is demodulated and decoded according to a channel estimation value.
  • the processor is specifically configured to:
  • the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is used, acquiring the currently used day according to the channel indication value and the first mapping relationship Line port and transcoding identifier;
  • the processor is further configured to:
  • the transmission data is not transmitted at a resource location in which the resource location in the currently used antenna port is the same as the resource location in the other antenna ports of the currently used antenna port.
  • the processor is further configured to:
  • the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is not used, acquiring the currently used antenna port and the transcoding identifier according to the downlink control information and the first mapping relationship;
  • the transmission data is demodulated and decoded according to a channel estimation value.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port, a data stream layer number, and a turn corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used.
  • the code identifier and the new data of the second code block indicate an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, a data stream layer number and a transcoding identifier, and two channel blocks, the channel indication
  • the antenna port corresponding to the value, the number of data stream layers, and the transcoding identifier; wherein the first mapping relationship is represented in the form of a mapping table.
  • a first base station including: at least one processor, a memory, a communication interface, and a bus, wherein the at least one processor, the memory, and the communication interface are connected by a bus and complete communication with each other, where the memory is used by For storing the program code, its towel:
  • the processor is configured to call program code in the memory to perform the following operations:
  • first information sent by any second base station includes but is not limited to: an antenna port, a sequence number of a demodulation reference signal, and a subframe set; the subframe set user indication The time at which any of the second base stations transmits data;
  • mapping relationship a cell identifier, an antenna port, a sequence number of the demodulation reference signal, and a subframe.
  • the data is transmitted for channel estimation to obtain an interference-free signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port, a data stream layer number, and a turn corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used.
  • the code identifier and the new data of the second code block indicate an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, a data stream layer number and a transcoding identifier, and two channel blocks, the channel indication An antenna port, a data stream layer number, and a transcoding identifier corresponding to the value; wherein the first mapping relationship is mapped
  • the form of the table is expressed.
  • the new data of the second code block is indicated as an antenna port corresponding to a channel indication value when a demodulation reference signal scrambling code sequence of a limited length is used. Including: Corresponding resource ports with the same resource location or all antenna ports.
  • sequence numbers of all demodulation reference signals in the second mapping relationship are the same.
  • a method and apparatus for interference coordination provided by an embodiment of the present invention, by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier, using a preset length demodulation reference signal scrambling code sequence
  • the transmission data is demodulated and decoded, which effectively reduces interference between more cells and cells in the data transmission process.
  • FIG. 1 is a schematic flow chart of a method for interference coordination according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of another method for interference coordination according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of still another method for interference coordination according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of still another method for interference coordination according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a first user equipment according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another first user equipment according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of still another first user equipment according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of still another first user equipment according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a first base station according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a first user equipment according to another embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of another first base station according to an embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of a system for interference coordination according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method for interference coordination, as shown in FIG. 1, including the following steps:
  • the first user equipment acquires a first mapping relationship.
  • the first mapping relationship is a correspondence between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first user equipment receives a sequence number of the demodulation reference signal sent by the first base station.
  • the first user equipment receives downlink control information sent by the first base station.
  • the downlink control information includes: information of the first code block and information of the second code block.
  • the first user equipment detects downlink control information, and obtains a channel indication value.
  • the first user equipment determines, according to the downlink control information, the number of the code blocks. 106. When the number of the code blocks is one, the first user equipment detects the downlink control information to obtain a new data indication value of the second code block.
  • the first user equipment uses the preset length demodulation reference according to the channel indication value, the first mapping relationship, and the sequence number of the demodulation reference signal.
  • the signal scrambling sequence performs channel estimation.
  • the first user equipment demodulates and decodes the transmission data according to the channel estimation value.
  • the method for interference coordination provided by the embodiment of the present invention uses a preset length demodulation reference signal scrambling code sequence pair transmission by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier.
  • the data is demodulated and decoded, which effectively reduces interference between more cells and cells in the data transmission process.
  • Embodiments of the present invention provide a method for interference coordination, as shown in FIG. 2, including the following steps:
  • the first base station acquires a first mapping relationship.
  • the first mapping relationship is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first base station receives the first information sent by any second base station.
  • the first information includes but is not limited to: an antenna port, a sequence number of the demodulation reference signal, and a subframe set; and the subframe set user indicates a time when any second base station sends data.
  • the first base station obtains a second mapping relationship according to the first information and the first mapping relationship.
  • the second mapping relationship is a mapping relationship between the cell identifier, the antenna port, the sequence number of the demodulation reference signal, and the subframe mode.
  • the first base station sends a sequence number of the demodulation reference signal to the first user equipment.
  • the first base station sends the downlink control information to the first user equipment, so that the first user equipment performs channel estimation on the transmission data according to the first mapping relationship, the downlink control information, and the sequence number of the demodulation reference signal, to obtain an interference-free signal.
  • the method for interference coordination provided by the embodiment of the present invention, by redefining the mapping relationship between the channel indication value and the antenna port, the number of data stream layers, and the transcoding identifier, The demodulation reference signal scrambling sequence of the length is used to demodulate and decode the transmission data, which effectively reduces interference between more cells and cells in the data transmission process.
  • Embodiments of the present invention provide a method for interference coordination, which is applicable to a transmission mode of
  • the first base station acquires a first mapping relationship.
  • the first mapping relationship is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used, the number of data stream layers, and
  • the transcoding identifier and the new data of the second code block indicate an antenna port, a data stream layer number, and a transcoding identifier corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, and the channel in the two code blocks.
  • the new data of the second code block indicates that the antenna port corresponding to the channel indication value when using the demodulation reference signal scrambling sequence of the limited length includes: the corresponding antenna port with the same resource location or all the antenna ports.
  • the new data of the second code block indicates that the demodulation reference signal scrambling code sequence using the limited length can be represented by the new data indication of the second code block as 1 in the embodiment of the present invention; the new data indication of the second code block
  • the scrambling code sequence for demodulating reference signals that does not use a defined length may be represented by a new data indication of the second code block being zero in an embodiment of the present invention.
  • the correspondence between the channel indication value, the antenna port, the number of data stream layers, and the transcoding identifier when the new data of the second code block is 0 or 1 may be indicated.
  • the first mapping relationship is pre-configured by the operator on the first base station according to the actual needs of the user. Since the TM9 and TM 10 transmission modes specify that when the user is scheduled in these two transmission modes, the pilot will use one of the antenna ports 7 to 14 when performing channel estimation. kind or several. Also, antenna ports 7, 8, 1 1 and 13 use the same resource location. Antenna ports 9, 10, 12, and 14 use the same resource location. Therefore, when the user terminal uses the antenna ports 7, 8, 1 1 and 13, the structure of the relationship mapping table indicated by the first mapping relationship can be as follows:
  • the structure of the first mapping relationship table may also be: One code block (code block 0 active, code block 1 is inactive) two code blocks (code block 0 and code block 1 are both active)
  • the new data indication is 0 New data indication is 1 channel Related information Channel Related information Channel indication Related information Indication indication Value
  • transcoding identifier 0 0 1 layer, antenna port 0 1 layer, antenna port 0 2 layer, antenna port 7, transcoding identifier 0 9, transcoding identifier 0 7-8, transcoding identifier 0
  • transcoding identifier 1 1 1 layer, antenna port 1 1 layer, antenna port 1 2 layer, antenna port 7, transcoding identifier 1 10, transcoding identifier 0 7-8, transcoding identifier 1
  • transcoding identifier 1 transcoding identifier 1 14
  • transcoding identifier 0 7- 10 transcoding identifier 0
  • transcoding identifier 0 9, transcoding identifier 1 7- 1 1, transcoding identifier 0
  • transcoding identifier 0 10
  • transcoding identifier 1 7- 12 12
  • transcoding identifier 0 12, transcoding identifier 1 7- 13, transcoding identifier 0
  • Transcoding ID 1 7- 14. Transcoding ID 0 The structure of the above two first mapping tables is applicable to the case where there are four user equipments or four cells in the system.
  • the structure of the first relationship mapping table may also be as shown in the following table. At this time, it is used in the case where there are more than four user equipments or more than four cells in the system; One code block (code block 0 active, code block 1 is inactive) two code blocks (code block 0 and code block 1 are both active)
  • New data indication is 0
  • New data indication is 1
  • transcoding identifier 0 0 1 layer, antenna port 0 1 layer, antenna port 0 2 layer, antenna port 7, transcoding identifier 0 7, transcoding identifier 1 7-8, transcoding identifier 0
  • transcoding identifier 1 1 1 layer, antenna port 1 1 layer, antenna port 1 2 layer, antenna port 7, transcoding identifier 1 8 , transcoding identifier 1 7-8, transcoding identifier 1
  • transcoding identifier 0 9, transcoding identifier 1 7-9, transcoding identifier 0
  • transcoding identifier 0 1 1, transcoding identifier 1 7- 1 1, transcoding identifier 0
  • transcoding identifier 0 12
  • transcoding identifier 1 7- 12 transcoding identifier 0
  • transcoding identifier 0 13
  • transcoding identifier 1 7- 13 13
  • the first base station receives the first information sent by any second base station.
  • the first information includes but is not limited to: an antenna port, a sequence number of the demodulation reference signal, and a subframe set; and the subframe set user indicates a time when any second base station sends data. All demodulation reference signals in the second mapping relationship have the same sequence number
  • the second base station may send the first information by using an X2 interface and an S1 interface.
  • an appropriate interface may be selected according to specific requirements to send information.
  • the first base station obtains a second mapping relationship according to the first information and the first mapping relationship.
  • the second mapping relationship is a mapping relationship between the cell identifier, the antenna port, the sequence number of the demodulation reference signal, and the subframe mode.
  • sequence numbers of all demodulation reference signals in the second mapping relationship are the same.
  • the structure of the second mapping table can be as follows:
  • the structure of the second mapping table can be as follows:
  • the sequence number of the demodulation reference signal in each mapping table is only one, and the base station uses the sequence number of the same demodulation reference signal in the time specified by the subframe mode, according to the respective analysis.
  • the antenna port schedules the user equipment corresponding to the base station.
  • the mapping table only exemplifies that the subframe mode is 10 cycles. Of course, it is not limited thereto, and an appropriate subframe mode can be selected according to actual needs.
  • the second mapping relationship can only be represented in the form of a mapping table.
  • an appropriate second mapping relationship structure can be selected according to the actual implementation environment.
  • the first user equipment acquires a first mapping relationship.
  • the first mapping relationship is a correspondence between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier; and the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • step 304 includes:
  • the first user equipment acquires the first mapping relationship according to the scheduling indication information.
  • the table structure of the first mapping relationship may be to obtain only the table structure required by itself, or to acquire all the table structures.
  • the first mapping relationship includes all the mapping table structures, that is, the user equipment is configured with all the mapping table structures
  • the first user equipment may learn which one of the first mapping tables is selected according to the scheduling indication of the first base station.
  • the structure, that is, the scheduling indication information may indicate that the first user equipment selects the first mapping table structure required by itself.
  • the first base station sends a sequence number of the demodulation reference signal to the first user equipment.
  • the first base station may configure the sequence number of the demodulation reference signal to the first user equipment by using high layer signaling or physical layer signaling.
  • the high layer signaling is carried in a Radio Resource Control (RRC) protocol.
  • RRC Radio Resource Control
  • RRC Radio Resource Control
  • the first user equipment receives a sequence number of the demodulation reference signal sent by the first base station.
  • the first base station sends the downlink control information to the first user equipment, so that the first user equipment performs channel estimation on the transmission data according to the first mapping relationship, the downlink control information, and the sequence number of the demodulation reference signal, to obtain an interference-free signal.
  • the first user equipment receives downlink control information sent by the first base station.
  • the downlink control information includes: information of the first code block and information of the second code block.
  • the information of the first code block may be: a modulation and coding format of the first code block, a new data indication value of the first code block, and a redundancy version of the first code block.
  • the information of the second code block may be: a modulation and coding format of the second code block, a new data indication value of the second code block, and a redundancy version of the second code block.
  • the first user equipment detects downlink control information, and obtains a channel indication value.
  • the first user equipment determines, according to the downlink control information, the number of the code blocks.
  • the first user equipment detects the downlink control information, and obtains a new data indication value of the second code block.
  • steps 312a to 314a are performed; when the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is not used, steps 312b to 313b are performed;
  • the first user equipment acquires an currently used antenna port and a transcoding identifier according to the channel indication value and the first mapping relationship.
  • the first user equipment sets the resource location in the currently used antenna port to not transmit the transmission data on the same resource location as the resource location in the other antenna ports of the currently used antenna port.
  • step 313a When the structure of the first mapping relationship obtained by the user equipment is the structure of the first mapping relationship applicable to the case where there are more than four user equipments or more than four cells in the system, step 313a is required. Execute, otherwise step 313a is not performed.
  • the first user equipment performs channel estimation by using a preset length demodulation reference signal scrambling code sequence according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the preferred preset length in the embodiment of the present invention may be 4.
  • a suitable length may be selected according to specific needs.
  • DMRS demodulation Reference Signal
  • the first user equipment acquires the currently used antenna port and the transcoding identifier according to the downlink control information and the first mapping relationship.
  • the first user equipment performs channel estimation according to the sequence number of the antenna port and the transcoding identifier demodulation reference signal. 3.
  • the first user equipment demodulates and decodes the transmission data according to the channel estimation value.
  • the subsequent operations are performed according to the new data indication value.
  • only the new data indication value indicates that the demodulation reference signal scrambling code sequence using the limited length can be indicated by the new data. 1 indicates; the new data indication value indicates that the demodulation reference signal scrambling sequence without using the limited length can be represented by a new data indication value of 0.
  • the new data indication value may also be swapped, that is, when the new data indication value is 1, the new data indication value in the embodiment of the present invention is used to indicate that the demodulation reference signal interference of the limited length is not used.
  • the operation corresponding to the specific new data indication value should be defined at the initial execution.
  • the method for interference coordination uses a preset length demodulation reference signal scrambling code sequence pair transmission by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier.
  • the data is demodulated and decoded, which effectively reduces interference between more cells and cells in the data transmission process. In turn, the performance of the system can be improved.
  • Embodiments of the present invention provide a method for interference coordination, which is applicable to a transmission mode of TM9 or TM10. When the number of code blocks is two, as shown in FIG. 4, the following steps are included:
  • the first base station acquires a first mapping relationship.
  • the first mapping relationship is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used, the number of data stream layers, and
  • the transcoding identifier and the new data of the second code block indicate an antenna port, a data stream layer number, and a transcoding identifier corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, and the channel in the two code blocks.
  • the new data of the second code block indicates that the antenna port corresponding to the channel indication value when using the demodulation reference signal scrambling sequence of the limited length includes: the corresponding antenna port with the same resource location or all the antenna ports.
  • the new data of the second code block indicates that the demodulation reference signal scrambling code sequence using the limited length can be represented by the new data indication of the second code block as 1 in the embodiment of the present invention; the new data indication of the second code block
  • the scrambling code sequence for demodulating reference signals that does not use a defined length may be represented by a new data indication of the second code block being zero in an embodiment of the present invention.
  • the correspondence between the channel indication value, the antenna port, the number of data stream layers, and the transcoding identifier when the new data of the second code block is 0 or 1 may be indicated.
  • the first base station receives the first information sent by any second base station.
  • the first information includes but is not limited to: an antenna port, a sequence number of the demodulation reference signal, and a subframe set; and the subframe set user indicates a time when any second base station sends data.
  • the first base station obtains a second mapping relationship according to the first information and the first mapping relationship.
  • the second mapping relationship is a mapping relationship between the cell identifier, the antenna port, the sequence number of the demodulation reference signal, and the subframe mode.
  • sequence numbers of all demodulation reference signals in the second mapping relationship are the same.
  • the first user equipment acquires a first mapping relationship.
  • the step 408 includes: the first user equipment acquires the first mapping relationship according to the scheduling indication information.
  • the first user equipment needs to know which first mapping relationship table structure is selected according to the indication of the first base station.
  • the first base station sends a sequence number of the demodulation reference signal to the first user equipment.
  • the first user equipment receives a sequence number of the demodulation reference signal sent by the first base station.
  • the first base station sends the downlink control information to the first user equipment, so that the first user equipment is configured according to the first mapping relationship, the downlink control information, and the sequence number of the demodulation reference signal.
  • Channel estimation is performed on the transmitted data to obtain an interference-free signal.
  • the first user equipment receives downlink control information sent by the first base station.
  • the downlink control information includes: information of the first code block and information of the second code block.
  • the information of the first code block may be: a modulation and coding format of the first code block, a new data indication value of the first code block, and a redundancy version of the first code block.
  • the information of the second code block may be: a modulation and coding format of the second code block, a new data indication value of the second code block, and a redundancy version of the second code block.
  • the first user equipment detects downlink control information, and obtains a channel indication value.
  • the first user equipment determines, according to the downlink control information, the number of the code blocks.
  • the first user equipment acquires the currently used antenna port and the transcoding identifier according to the downlink control information and the first mapping relationship.
  • the first user equipment performs channel estimation according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the first user equipment demodulates and decodes the transmission data according to the channel estimation value.
  • the explanation of the related content in the embodiment is the same as that in the above embodiment, and details are not described herein again.
  • the subsequent operations are performed according to the new data indication value.
  • the new data indication value indicates that the demodulation reference signal scrambling code sequence using the limited length can be indicated by the new data. 1 indicates; the new data indication value indicates that the demodulation reference signal scrambling sequence without using the limited length can be represented by a new data indication value of 0.
  • the new data indication value may also be swapped, that is, when the new data indication value is 1, the new data indication value in the embodiment of the present invention is used to indicate that the demodulation reference signal interference of the limited length is not used.
  • the method for interference coordination provided by the embodiment of the present invention uses a preset length demodulation reference signal scrambling code sequence pair transmission by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier.
  • the data is demodulated and decoded, which effectively reduces interference between more cells and cells in the data transmission process. In turn, the performance of the system can be improved.
  • An embodiment of the present invention provides a first user equipment 5, as shown in FIG. 5, including: a first obtaining unit 51, a receiving unit 52, a determining unit 53, and a first processing unit 54;
  • the first obtaining unit 5 1 is configured to acquire the first mapping relationship.
  • the first mapping relationship is a correspondence between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used, the number of data stream layers, and
  • the transcoding identifier and the new data of the second code block indicate an antenna port, a data stream layer number, and a transcoding identifier corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, and the channel in the two code blocks.
  • the new data of the second code block indicates that the antenna port corresponding to the channel indication value when using the demodulation reference signal scrambling sequence of the limited length includes: the corresponding antenna port with the same resource location or all the antenna ports.
  • the receiving unit 52 is configured to receive a sequence number of the demodulation reference signal sent by the first base station.
  • the receiving unit 52 is further configured to receive downlink control information sent by the first base station.
  • the downlink control information includes: information of the first code block and information of the second code block.
  • the information of the first code block may be: a modulation and coding format of the first code block, a new data indication value of the first code block, and a redundancy version of the first code block.
  • the information of the second code block may be: a modulation and coding format of the second code block, and a second code block
  • the new data indicates the value and the redundancy version of the second code block.
  • the first obtaining unit 51 is further configured to detect downlink control information, and obtain a channel indication value.
  • the determining unit 53 is configured to determine the number of code blocks according to the downlink control information.
  • the first processing unit 54 is configured to: when the number of code blocks is one, detect downlink control information to obtain a new data indication value of the second code block.
  • the first processing unit 54 is further configured to use a preset length according to the channel indication value, the first mapping relationship, and the sequence number of the demodulation reference signal when the new data indication value indicates that the demodulation reference signal scrambling sequence of the limited length is used.
  • the reference signal scrambling code sequence is demodulated for channel estimation.
  • the first processing unit 54 is further configured to perform demodulation and decoding on the transmission data according to the channel estimation value.
  • the first obtaining unit 51 is specifically configured to acquire the first mapping relationship according to the scheduling indication information.
  • the first user equipment further includes: a second acquiring unit 65 and a second processing unit 56, where:
  • the second obtaining unit 55 is configured to obtain, when the number of the code blocks is two, the currently used antenna port and the transcoding identifier according to the downlink control information and the first mapping relationship.
  • the second processing unit 56 is further configured to perform channel estimation according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the second processing unit 56 is further configured to perform demodulation and decoding on the transmission data according to the channel estimation value.
  • the first processing unit 54 includes: an obtaining subunit 541 and a processing subunit 542, where:
  • the obtaining sub-unit 541 is configured to obtain the currently used antenna port and transcoding identifier according to the channel indication value and the first mapping relationship when the new data indication value indicates that the demodulation reference signal scrambling sequence of the limited length is used.
  • the processing sub-unit 542 is configured to perform channel estimation by using a preset length demodulation reference signal scrambling code sequence according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the first user equipment further includes: Unit 57, wherein:
  • the setting unit 57 is configured to not transmit the transmission data on the resource location in the currently used antenna port and the resource location in the other antenna port except the currently used antenna port.
  • the first user equipment further includes: a third obtaining unit 68 and a third processing unit 59, where:
  • the third obtaining unit 58 is configured to: when the new data indication value indicates that the demodulation reference signal scrambling sequence of the limited length is not used, obtain the currently used antenna port and the transcoding identifier according to the downlink control information and the first mapping relationship.
  • the third processing unit 59 is configured to perform channel estimation according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the third processing unit 59 is further configured to perform demodulation and decoding on the transmission data according to the channel estimation value.
  • the new data of the second code block indicates that the demodulation reference signal scrambling code sequence using the limited length may be represented by the new data indication of the second code block as 1 in the embodiment of the present invention;
  • the new data indicates that the demodulation reference signal scrambling sequence that does not use the defined length may be represented by the new data indication of the second code block being zero in the embodiment of the present invention.
  • the correspondence between the channel indication value, the antenna port, the number of data stream layers, and the transcoding identifier when the new data of the second code block is 0 or 1 may be used.
  • the new data indication value of the second code block is merely exemplified here to indicate that the demodulation reference signal scrambling code sequence using the limited length can be represented by the new data indication value of 1, and the same new data indication value indicates that the limited length is not used.
  • the demodulation reference signal scrambling sequence can be represented by the new data indicating value of 0, which is not specifically limited.
  • the new data indicating value can also be interchanged to perform corresponding operations when applying specific numbers.
  • the first user equipment uses a preset length of demodulation reference signal scrambling code sequence pair transmission by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier.
  • the data is demodulated and decoded, which effectively reduces interference between more cells and cells in the data transmission process. In turn, the performance of the system can be improved.
  • An embodiment of the present invention provides a first base station 6, which is shown in FIG. 9, and includes: an obtaining unit 61, a receiving unit 62, and a sending unit 63, where:
  • the obtaining unit 61 is configured to acquire a first mapping relationship.
  • the first mapping relationship is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port, a data stream layer number, and a transcoding identifier corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used. And the new data of the second code block is indicated as an antenna port, a data stream layer number, and a transcoding identifier corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, and the channel indication value is corresponding to the two code blocks.
  • the new data of the second code block indicates that the antenna port corresponding to the channel indication value when using the demodulation reference signal scrambling sequence of the limited length includes: the corresponding antenna port with the same resource location or all the antenna ports.
  • the receiving unit 62 is configured to receive first information sent by any second base station.
  • the first information includes but is not limited to: an antenna port, a sequence number of the demodulation reference signal, and a subframe set; and the subframe set user indicates a time when any second base station sends data.
  • the obtaining unit 61 is further configured to obtain a second mapping relationship according to the first information and the first mapping relationship.
  • the second mapping relationship is a mapping relationship between the cell identifier, the antenna port, the sequence number of the demodulation reference signal, and the subframe mode.
  • sequence numbers of all demodulation reference signals in the second mapping relationship are the same.
  • the sending unit 63 is configured to send a sequence number of the demodulation reference signal to the first user equipment.
  • the sending unit 63 is further configured to send the downlink control information to the first user equipment, so that the first user equipment performs channel estimation on the transmission data according to the first mapping relationship, the downlink control information, and the sequence number of the demodulation reference signal, to obtain an interference-free signal. .
  • the new data of the second code block is indicated to use a demodulation reference signal of a limited length.
  • the scrambling code sequence may be represented by the new data indication of the second code block as 1 in the embodiment of the present invention; the new data of the second code block is indicated as not using the delimited reference signal scrambling code sequence of the limited length in the present invention.
  • the embodiment may be represented by a new data indication of the second code block being zero. In the relationship mapping table in this embodiment, the correspondence between the channel indication value, the antenna port, the number of data stream layers, and the transcoding identifier when the new data of the second code block is 0 or 1 may be indicated.
  • the new data indication value of the second code block is merely exemplified here to indicate that the demodulation reference signal scrambling code sequence using the limited length can be represented by the new data indication value of 1, and the same new data indication value indicates that the limited length is not used.
  • the demodulation reference signal scrambling sequence can be represented by the new data indicating value of 0, which is not specifically limited.
  • the new data indicating value can also be interchanged to perform corresponding operations when applying specific numbers.
  • the first base station uses a preset length demodulation reference signal scrambling code sequence to transmit data by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier. Demodulation and decoding are performed, which effectively reduces interference between more cells and cells in the data transmission process. In turn, the performance of the system can be improved.
  • An embodiment of the present invention provides a first user equipment 7, as shown in FIG. 10, comprising: at least one processor 71, a memory 72, a communication interface 73 and a bus 74, at least one processor 71, a memory 72, and The communication interface 73 is connected and completed by the bus 74, wherein:
  • the bus 74 can be an Industry Standard Architecture (I SA) bus, a P eripheral C omponent Interconnect (P CI ) bus or an extended industry standard architecture ( Extended Industry Standard) Architecture, referred to as EI SA) bus, etc.
  • the bus 74 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 10, but it does not mean that there is only one bus or one type of bus. Its towel:
  • the memory 72 is for storing executable program code, the program code including computer operating instructions.
  • Memory 72 may contain high speed RAM memory, and may also include non-easy A non-volatile memory, such as at least one disk storage device.
  • the processor 71 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to invent the embodiments of the present invention. .
  • the communication interface 73 is mainly used to implement communication between the first base station and the first user equipment of this embodiment.
  • the processor 7 1 is also used to call the program code in the memory 72 to perform the following operations:
  • the first mapping relationship is obtained through at least one communication interface 73.
  • the first mapping relationship is a correspondence between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used, the number of data stream layers, and
  • the transcoding identifier and the new data of the second code block indicate an antenna port, a data stream layer number, and a transcoding identifier corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, and the channel in the two code blocks.
  • the new data of the second code block indicates that the antenna port corresponding to the channel indication value when using the demodulation reference signal scrambling sequence of the limited length includes: the corresponding antenna port with the same resource location or all the antenna ports.
  • the sequence number of the demodulation reference signal transmitted by the first base station is received through at least one communication interface 73.
  • the downlink control information sent by the first base station is received through the at least one communication interface 73.
  • the downlink control information includes: information of the first code block and information of the second code block.
  • the information of the first code block may be: a modulation and coding format of the first code block,
  • the new data of the first code block indicates a value and a redundancy version of the first code block.
  • the information of the second code block may be: a modulation and coding format of the second code block, a new data indication value of the second code block, and a redundancy version of the second code block.
  • the downlink control information is detected to obtain a channel indication value.
  • the number of code blocks is determined according to the downlink control information.
  • the downlink control information is detected to obtain a new data indication value of the second code block.
  • the demodulation reference signal scrambling code sequence of the limited length is used, according to the channel indication value, the first mapping relationship, and the sequence number of the demodulation reference signal, the demodulation reference signal scrambling code sequence of the preset length is used. Channel estimation.
  • the transmission data is demodulated and decoded according to the channel estimation value.
  • the processor 7 1 is specifically configured to acquire the first mapping relationship by using the at least one communication interface 73 according to the scheduling indication information.
  • processor 73 is further configured to perform the following operations:
  • the currently used antenna port and the transcoding identifier are obtained according to the downlink control information and the first mapping relationship.
  • the channel estimation is performed based on the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the transmission data is demodulated and decoded according to the channel estimation value.
  • processor 73 is specifically configured to:
  • the currently used antenna port and transcoding identifier are obtained according to the channel indication value and the first mapping relationship.
  • Channel estimation is performed using a preset length demodulation reference signal scrambling code sequence according to the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the processor 73 is further configured to set that the resource location in the currently used antenna port does not transmit the transmission data at the same resource location as the resource location in the other antenna ports of the currently used antenna port.
  • the processor 73 is further configured to perform the following operations: When the new data indication value indicates that the demodulation reference signal scrambling code sequence of the limited length is not used, the currently used antenna port and transcoding identifier are obtained according to the downlink control information and the first mapping relationship.
  • the channel estimation is performed based on the antenna port, the transcoding identifier, and the sequence number of the demodulation reference signal.
  • the transmission data is demodulated and decoded according to the channel estimation value.
  • the new data of the second code block indicates that the demodulation reference signal scrambling code sequence using the limited length may be represented by the new data indication of the second code block as 1 in the embodiment of the present invention;
  • the new data indicates that the demodulation reference signal scrambling sequence that does not use the defined length may be represented by the new data indication of the second code block being zero in the embodiment of the present invention.
  • the correspondence between the channel indication value, the antenna port, the number of data stream layers, and the transcoding identifier when the new data of the second code block is 0 or 1 may be used.
  • the new data indication value of the second code block is merely exemplified here to indicate that the demodulation reference signal scrambling code sequence using the limited length can be represented by the new data indication value of 1, and the same new data indication value indicates that the limited length is not used.
  • the demodulation reference signal scrambling sequence can be represented by the new data indicating value of 0, which is not specifically limited.
  • the new data indicating value can also be interchanged to perform corresponding operations when applying specific numbers.
  • the first user equipment uses a preset length of demodulation reference signal scrambling code sequence pair transmission by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier.
  • the data is demodulated and decoded, which effectively reduces interference between more cells and cells in the data transmission process. In turn, the performance of the system can be improved.
  • An embodiment of the present invention provides a first base station 8, as shown in FIG. 11, including: at least one processor 81, a memory 82, a communication interface 83, and a bus 84, at least one processor 81, a memory 82, and a communication interface 83. Connected via bus 84 and completed communication with each other, where:
  • the bus 84 can be an Industry Standard Architecture (ISA) bus, and a peripheral component (Peripheral Component). Interconnect), referred to as the PCI) bus or the Extended Industry Standard Architecture (EISA) bus.
  • ISA Industry Standard Architecture
  • PCI peripheral component
  • EISA Extended Industry Standard Architecture
  • the bus 84 can be divided into an address bus, a data bus, a control bus, and the like.
  • Figure 1 shows only one thick line, but does not mean that there is only one bus or one type of bus. Its towel:
  • Memory 82 is for storing executable program code, the program code including computer operating instructions.
  • Memory 82 may contain high speed RAM memory and may also include non-volatile memory, such as at least one disk storage device.
  • the processor 81 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to invent the embodiments of the present invention. .
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • the communication interface 83 is mainly used to implement communication between the first base station and the first user equipment of this embodiment.
  • the processor 8 1 is also used to call the program code in the memory 82 to perform the following operations:
  • the first mapping relationship is obtained through at least one communication interface 83.
  • the first mapping relationship is a mapping relationship between a channel indication value, an antenna port, a data stream layer number, and a transcoding identifier.
  • the transcoding identifier is used to indicate a sequence number of the demodulation reference signal.
  • the first mapping relationship includes: in a code block, the new data of the second code block indicates an antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is not used, the number of data stream layers, and
  • the transcoding identifier and the new data of the second code block indicate an antenna port, a data stream layer number, and a transcoding identifier corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used, and the channel in the two code blocks.
  • the new data of the second code block indicates that the antenna port corresponding to the channel indication value when the demodulation reference signal scrambling code sequence of the limited length is used includes: the corresponding antenna port or all the antenna ports with the same resource location.
  • the first information transmitted by any of the second base stations is received by the at least one communication interface 83.
  • the first information includes but is not limited to: an antenna port, a sequence number of the demodulation reference signal, and a subframe set; and the subframe set user indicates a time when any second base station sends data.
  • the second mapping relationship is obtained through the at least one communication interface 73 based on the first information and the first mapping relationship.
  • the second mapping relationship is a mapping relationship between the cell identifier, the antenna port, the sequence number of the demodulation reference signal, and the subframe mode.
  • sequence numbers of all demodulation reference signals in the second mapping relationship are the same.
  • the sequence number of the demodulation reference signal is transmitted to the first user equipment via at least one communication interface 73.
  • the downlink control information is sent to the first user equipment by using the at least one communication interface 73, so that the first user equipment performs channel estimation on the transmission data according to the first mapping relationship, the downlink control information, and the sequence number of the demodulation reference signal, to obtain an interference-free signal.
  • the new data of the second code block indicates that the demodulation reference signal scrambling code sequence using the limited length may be represented by the new data indication of the second code block as 1 in the embodiment of the present invention;
  • the new data indicates that the demodulation reference signal scrambling sequence that does not use the defined length may be represented by the new data indication of the second code block being zero in the embodiment of the present invention.
  • the correspondence between the channel indication value, the antenna port, the number of data stream layers, and the transcoding identifier when the new data of the second code block is 0 or 1 may be used.
  • the new data indication value of the second code block is merely exemplified here to indicate that the demodulation reference signal scrambling code sequence using the limited length can be represented by the new data indication value of 1, and the same new data indication value indicates that the limited length is not used.
  • the demodulation reference signal scrambling sequence can be represented by the new data indicating value of 0, which is not specifically limited.
  • the new data indicating value can also be interchanged to perform corresponding operations when applying specific numbers.
  • the first base station uses a preset length demodulation reference signal scrambling code sequence to transmit data by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier. Demodulation and decoding are performed, which effectively reduces interference between more cells and cells in the data transmission process. In turn, the performance of the system can be improved.
  • An embodiment of the present invention provides a system for interference coordination. Referring to FIG. 12, the method includes: a first base station, a first user equipment b, and a second base station c, where:
  • the first base station a is the first base station in the embodiment corresponding to FIG. 5; the first user equipment b is any first user equipment in the embodiment corresponding to FIG. 6-9.
  • the first base station a is the first base station in the embodiment corresponding to FIG. 10; the first user equipment b is the first user equipment in the embodiment corresponding to FIG.
  • the second base station c is configured to send the first information to the first base station a.
  • the interference coordination system uses a preset length demodulation reference signal scrambling sequence pair transmission by redefining a mapping relationship between a channel indication value and an antenna port, a data stream layer number, and a transcoding identifier.
  • the data is demodulated and decoded, which effectively reduces interference between more cells and cells in the data transmission process. In turn, the performance of the system can be improved.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Can be based on reality It is necessary to select some or all of the units to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif de coordination d'interférences qui concernent le domaine technique des communications et qui permettent de réduire efficacement davantage d'interférences intercellulaires et intracellulaires dans un processus de transmission de données. Le procédé comprend plus particulièrement les étapes suivantes, effectuées par un premier équipement utilisateur : l'acquisition d'une première relation de mappage; la réception d'un numéro de séquence d'un signal de référence de démodulation envoyé par une première station de base; la réception d'informations de commande de liaison descendante envoyées par la première station de base; la détection des informations de commande de liaison descendante et l'obtention d'une valeur d'indication de canal; la détermination du nombre de blocs de signaux selon les informations de commande de liaison descendante; lorsque le nombre de blocs de signaux est égal à un, la détection des informations de commande de liaison descendante et l'obtention d'une nouvelle valeur d'indication de données d'un second bloc de signaux; lorsque la nouvelle valeur d'indication de données indique l'utilisation d'une séquence de brouillage de signal de référence de démodulation d'une longueur définie, la réalisation d'une estimation de canal au moyen d'une séquence de brouillage de signal de référence de démodulation d'une longueur prédéfinie selon la valeur d'indication de canal, la première relation de mappage et le numéro de séquence du signal de référence de démodulation; et la réalisation d'une démodulation et d'un décodage sur des données de transmission selon une valeur d'estimation de canal. La présente invention est utilisée dans la transmission d'informations.
PCT/CN2013/077490 2013-06-19 2013-06-19 Procédé et dispositif de coordination d'interférences WO2014201644A1 (fr)

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WO2019241967A1 (fr) * 2018-06-21 2019-12-26 Qualcomm Incorporated Conception de signalisation pour procédés de précodage non linéaires
CN112367147B (zh) * 2020-09-27 2022-09-09 苏州宣怀智能科技有限公司 数据显示方法、装置、电子设备和计算机可读介质

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