CN107231223B - Data processing method and device - Google Patents

Data processing method and device Download PDF

Info

Publication number
CN107231223B
CN107231223B CN201610188517.7A CN201610188517A CN107231223B CN 107231223 B CN107231223 B CN 107231223B CN 201610188517 A CN201610188517 A CN 201610188517A CN 107231223 B CN107231223 B CN 107231223B
Authority
CN
China
Prior art keywords
precoding matrix
antenna
codebook
base station
type
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201610188517.7A
Other languages
Chinese (zh)
Other versions
CN107231223A (en
Inventor
李辉
高秋彬
陈润华
塔玛拉卡·拉盖施
陈文洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
Original Assignee
China Academy of Telecommunications Technology CATT
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 China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Publication of CN107231223A publication Critical patent/CN107231223A/en
Application granted granted Critical
Publication of CN107231223B publication Critical patent/CN107231223B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

The invention provides a data processing method and a data processing device, relates to the technical field of communication, and aims to ensure accurate transmission of data when an antenna array of a base station is an irregular antenna array. The data processing method of the invention comprises the following steps: sending a notification message to a terminal, wherein the notification message carries information of the first type of antenna unit; the first type of antenna unit comprises an antenna unit which is not used for data transmission; the antenna array further comprises a second type of antenna elements, the second type of antenna elements comprising antenna elements for data transmission; transmitting a pilot signal to the terminal; receiving a precoding matrix indicator of a first precoding matrix sent by the terminal, wherein the precoding matrix indicator is determined by the terminal after channel estimation is carried out according to the pilot signal and the notification message; and determining a second precoding matrix according to the precoding matrix indication, and precoding data to be transmitted by using the second precoding matrix.

Description

Data processing method and device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data processing method and apparatus.
Background
In a multi-antenna system based on linear precoding, when data transmission is carried out, a terminal selects a proper precoding matrix from a codebook at a receiver side according to channel information, and then feeds back the selected precoding matrix to a base station at the index of the codebook. Wherein the codebook is composed of a plurality of precoding matrices. Then, the base station determines a corresponding pre-coding matrix according to the received index, and performs appropriate pre-processing on the signal to be transmitted by using the pre-coding matrix.
In the Rel-10 LTE (Long Term Evolution) system, a two-stage codebook is introduced for 8 antennas at a base station. In Rel-12, the 4 antennas for the base station side are enhanced into a two-stage codebook. In Rel-13, the base station uses FD MIMO (full-dimensional MIMO) antenna arrays, and the number of antenna ports is increased to 16, and the antenna ports may be arranged in one or two dimensions. For a one-dimensional antenna array, each antenna is uniformly arranged in a row or a column. For a two-dimensional antenna array, all antennas are uniformly arranged in a rectangle or square. An antenna array in which antennas are uniformly arranged is referred to as a regular antenna array.
However, in practical scenarios, when some antennas in the antenna array fail, the regular antenna array at the base station end will no longer satisfy the regular arrangement. This form of antenna array is referred to herein as an irregular antenna array.
When an irregular antenna array is used, since the terminal still performs channel estimation according to the existing method, the Channel State Information (CSI) sent by the terminal to the base station will be inaccurate. Therefore, the precoding matrix and the Channel Quality Indicator (CQI) obtained by the base station according to the feedback of the terminal are also inaccurate, and thus accurate transmission of data cannot be guaranteed.
Disclosure of Invention
In view of this, the present invention provides a signal transmission method and apparatus, which can ensure accurate data transmission when an antenna array of a base station is an irregular antenna array.
To solve the above technical problem, the present invention provides a data processing method, including:
sending a notification message to a terminal, wherein the notification message carries information of a first type of antenna unit of an antenna array; wherein the first type of antenna elements comprises antenna elements not used for data transmission; the antenna array further comprises a second type of antenna elements, the second type of antenna elements comprising antenna elements for data transmission;
transmitting a pilot signal to the terminal;
receiving a precoding matrix indicator of a first precoding matrix sent by the terminal, wherein the precoding matrix indicator is determined by the terminal after channel estimation is carried out according to the pilot signal and the notification message;
and determining a second precoding matrix according to the precoding matrix indication, and precoding data to be transmitted by using the second precoding matrix.
Wherein the sending a notification message to a terminal, where the information of the first type antenna unit of the antenna array carried in the notification message includes:
determining a first antenna port corresponding to a first type antenna unit and a second antenna port corresponding to a second type antenna unit according to the first type antenna unit and the second type antenna unit in the antenna array;
acquiring information of a first type antenna unit of the antenna array, wherein the information of the first type antenna unit of the antenna array comprises any combination of the following information: a port identification of the first antenna port; the row index of a precoding matrix corresponding to the first antenna port in a first codebook at a base station side; a port identification of the second antenna port; the row index of a precoding matrix corresponding to the second antenna port in the first codebook at the base station side;
and sending a high-level signaling to the terminal, wherein the high-level signaling carries the information of the first type of antenna units of the antenna array.
Wherein the transmitting the pilot signal to the terminal comprises:
setting the pilot signal transmitting power of a first antenna port corresponding to the first type of antenna unit to be zero, and setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
and respectively transmitting pilot signals by using the first antenna port and the second antenna port.
Wherein the transmitting the pilot signal to the terminal comprises:
setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
transmitting a pilot signal using the second antenna port.
Determining a second precoding matrix according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix comprises:
when the precoding matrix indicator is the index of the first precoding matrix in a second codebook at the terminal side, modifying the first codebook at the base station side and obtaining the second codebook at the base station side;
and determining a second precoding matrix in a second codebook at the base station side according to the precoding matrix indication, and precoding data to be transmitted by using the second precoding matrix.
Wherein, the modifying the first codebook at the base station side and obtaining the second codebook at the base station side include:
deleting rows corresponding to the first antenna ports corresponding to the first type of antenna units in each precoding matrix included in the first codebook at the base station side;
and taking a codebook formed by each precoding matrix subjected to the deleting operation as the second codebook on the base station side.
Determining a second precoding matrix according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix comprises:
and when the precoding matrix indicator is the index of the first precoding matrix in the first codebook at the terminal side, determining a second precoding matrix in the first codebook at the base station side according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix.
In a second aspect, the present invention provides a data processing method, including:
receiving a notification message sent by a base station, wherein the notification message comprises information of a first type of antenna unit of an antenna array of the base station; the antenna array further comprises a second type of antenna unit, and the second type of antenna unit comprises an antenna unit used for data transmission;
receiving a pilot signal sent by the base station;
performing channel estimation according to the pilot signal and the notification message, and determining a precoding matrix indicator of a first precoding matrix according to a channel estimation result;
and sending the precoding matrix indication to the base station, so that the base station determines a second precoding matrix by using the precoding matrix indication and precodes data to be transmitted by using the second precoding matrix.
Wherein the performing channel estimation according to the pilot signal and the notification message, and determining a precoding matrix indicator of a first precoding matrix according to a channel estimation result includes:
determining a second antenna port corresponding to the second type antenna unit according to the notification message, and performing channel estimation according to a pilot signal sent by the second antenna port;
modifying the first codebook at the terminal side according to the notification message and obtaining a second codebook at the terminal side;
and determining a first precoding matrix from a second codebook at the terminal side according to the channel estimation result, and obtaining a precoding matrix indicator of the first precoding matrix.
Wherein the modifying the first terminal-side codebook according to the notification message and obtaining the second terminal-side codebook include:
analyzing the notification message to obtain information of a first type of antenna unit of the antenna array included in the notification message;
when the information of the first antenna unit of the antenna array is a port identifier of a first antenna port corresponding to the first antenna unit or a row index of a precoding matrix corresponding to the first antenna port in a first codebook at a base station side, deleting a row corresponding to the first antenna port in each precoding matrix included in the first codebook at the terminal side according to the port identifier of the first antenna port or the row index of the precoding matrix corresponding to the first antenna port in the first codebook at the base station side;
when the information of the first-class antenna unit of the antenna array is the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook at the base station side, reserving the row corresponding to the second antenna port in each precoding matrix included in the first codebook at the terminal side and deleting the rest rows according to the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook at the base station side;
and taking a codebook formed by each precoding matrix subjected to the deleting operation as the terminal side second codebook.
Wherein the sending the precoding matrix indicator to the base station comprises:
and sending a channel state feedback message to the base station, wherein the channel state feedback message comprises the precoding matrix indication.
Wherein, the channel state feedback message further comprises: rank and/or channel quality indication of the terminal side second codebook.
Wherein the precoding matrix indicator of the first precoding matrix is an index of the first precoding matrix in a terminal side second codebook or an index of the first precoding matrix in a terminal side first codebook.
In a third aspect, the present invention provides a data processing apparatus comprising:
the information sending module is used for sending a notification message to the terminal, wherein the notification message carries information of a first type of antenna unit of the antenna array; wherein the first type of antenna elements comprises antenna elements not used for data transmission; the antenna array further comprises a second type of antenna elements, the second type of antenna elements comprising antenna elements for data transmission;
the signal processing module is used for sending a pilot signal to the terminal;
an information receiving module, configured to receive a precoding matrix indicator of a first precoding matrix sent by the terminal, where the precoding matrix indicator is determined by the terminal after performing channel estimation according to the pilot signal and the notification message;
and the data processing module is used for determining a second precoding matrix according to the precoding matrix indication and precoding data to be transmitted by utilizing the second precoding matrix.
Wherein the message sending module comprises:
the port determining submodule is used for determining a first antenna port corresponding to a first type antenna unit and a second antenna port corresponding to a second type antenna unit according to the first type antenna unit and the second type antenna unit in the antenna array;
the information acquisition sub-module is configured to acquire information of a first type antenna unit of the antenna array, where the information of the first type antenna unit of the antenna array includes any combination of the following information: a port identification of the first antenna port; the row index of a precoding matrix corresponding to the first antenna port in a first codebook at a base station side; a port identification of the second antenna port; the row index of a precoding matrix corresponding to the second antenna port in the first codebook at the base station side;
and the sending submodule is used for sending a high-level signaling to the terminal, wherein the high-level signaling carries the information of the first type of antenna units of the antenna array.
Wherein the signal processing module comprises:
the first setting submodule is used for setting the pilot signal transmitting power of a first antenna port corresponding to the first type of antenna unit to be zero and setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
and the first sending submodule is used for sending pilot signals by using the first antenna port and the second antenna port respectively.
Wherein the signal processing module comprises:
the second setting submodule is used for setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
and the second sending submodule is used for sending the pilot signal by using the second antenna port.
Wherein the data processing module comprises:
a codebook modification submodule, configured to modify the first codebook on the base station side and obtain the second codebook on the base station side when the precoding matrix indicator is an index of the first precoding matrix in the second codebook on the terminal side;
and the precoding submodule is used for determining a second precoding matrix in a second codebook at the base station side according to the precoding matrix indication and precoding data to be transmitted by using the second precoding matrix.
Wherein the codebook modification submodule comprises:
a deleting unit, configured to delete, in each precoding matrix included in the first codebook on the base station side, a row corresponding to the first antenna port corresponding to the first antenna unit;
and a generating unit configured to use a codebook including each of the precoding matrices subjected to the erasure operation as the base station side second codebook.
Wherein the data processing module is specifically configured to: and when the precoding matrix indicator is the index of the first precoding matrix in the first codebook at the terminal side, determining a second precoding matrix in the first codebook at the base station side according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix.
In a fourth aspect, the present invention provides a data processing apparatus comprising:
a message receiving module, configured to receive a notification message sent by a base station, where the notification message includes information of a first type of antenna unit of an antenna array of the base station; the antenna array further comprises a second type of antenna unit, and the second type of antenna unit comprises an antenna unit used for data transmission;
a signal receiving module, configured to receive a pilot signal sent by the base station;
a channel estimation module, configured to perform channel estimation according to the pilot signal and the notification message, and determine a precoding matrix indicator of a first precoding matrix according to a channel estimation result;
and the information sending module is used for sending the precoding matrix indication to the base station, so that the base station determines a second precoding matrix by using the precoding matrix indication and precodes data to be transmitted by using the second precoding matrix.
Wherein the channel estimation module comprises:
the channel estimation submodule is used for determining a second antenna port corresponding to the second type of antenna unit according to the notification message and carrying out channel estimation according to a pilot signal sent by the second antenna port;
the codebook processing submodule is used for modifying the first codebook at the terminal side according to the notification message and acquiring a second codebook at the terminal side;
and the information acquisition submodule is used for determining a first precoding matrix from the second codebook at the terminal side according to the channel estimation result and acquiring the precoding matrix indication of the first precoding matrix.
Wherein the codebook processing sub-module comprises:
the analysis unit is used for analyzing the notification message to obtain the information of the first type antenna unit of the antenna array included in the notification message;
a first codebook modifying unit, configured to delete, when information of a first antenna unit of the antenna array is a port identifier of a first antenna port corresponding to the first antenna unit or a row index of a precoding matrix corresponding to the first antenna port in a first codebook on a base station side, a row corresponding to the first antenna port in each precoding matrix included in the first codebook on the terminal side according to the port identifier of the first antenna port or the row index of the precoding matrix corresponding to the first antenna port in the first codebook on the base station side;
a second codebook modification unit, configured to, when information of a first type antenna unit of the antenna array is a port identifier of the second antenna port or a row index of a precoding matrix corresponding to the second antenna port in the first codebook on the base station side, reserve a row corresponding to the second antenna port in each precoding matrix included in the first codebook on the terminal side and delete the remaining rows according to the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook on the base station side;
and a generating unit configured to use a codebook including the precoding matrices subjected to the erasure operation as the terminal-side second codebook.
Wherein the information sending module is specifically configured to: and sending a channel state feedback message to the base station, wherein the channel state feedback message comprises the precoding matrix indication.
The technical scheme of the invention has the following beneficial effects:
in the embodiment of the present invention, when the first type antenna unit of the antenna unit not used for data transmission exists in the antenna array of the base station, the base station sends the pilot signal to the terminal, and also sends the information of the first type antenna unit in the antenna array to the terminal. Therefore, when the terminal performs channel estimation according to the pilot signal, the situation of the first type antenna unit in the antenna array can be considered, and the precoding matrix indication of the first precoding matrix suitable for the specific situation of the antenna array can be obtained according to the channel estimation result. Then, after receiving the precoding matrix indicator of the first precoding matrix, the base station can accurately obtain a second precoding matrix for precoding data to be transmitted according to the precoding matrix indicator of the first precoding matrix. Therefore, it can be seen from the above that, when the antenna array is an irregular antenna array, the base station can also accurately obtain the precoding matrix for precoding the data to be transmitted corresponding to the situation of the antenna array, thereby ensuring the accuracy of data transmission.
Drawings
FIG. 1 is a flowchart of a data processing method according to a first embodiment of the present invention;
FIG. 2 is a flowchart of a data processing method according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of an antenna array on the base station side in the third embodiment of the present invention;
FIG. 4 is a flowchart of a data processing method according to a third embodiment of the present invention;
FIG. 5 is a diagram of a data processing apparatus according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of a data processing apparatus according to a fifth embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1, a data processing method according to a first embodiment of the present invention is executed by a base station, and includes:
step 11, sending a notification message to the terminal, where the notification message carries information of the first type antenna unit of the antenna array.
The antenna array comprises a regular antenna array and an irregular antenna array. The embodiment of the invention mainly provides a data processing method aiming at the use of an irregular antenna array at a base station end. In a specific application, the antenna array used by the base station may be an irregular antenna array due to various reasons.
In the first case: the irregular antenna array is caused by the antenna units with abnormal working states in the antenna array. The antenna unit with abnormal operation state in the irregular antenna array is referred to as a failure antenna unit, and the antenna unit with normal operation state is referred to as an effective antenna unit.
In this case, the base station may detect the operating status of each antenna element in the antenna array to determine whether a failed antenna element exists in the antenna array. These failed antenna elements are not used for data transmission. In the embodiment of the present invention, the data transmission refers to transmission of user data.
In the second case: the irregular antenna array at the base station end is not caused by the existence of the failed antenna unit in the antenna array, but is directly manufactured into the irregular antenna array by manufacturers.
In the LTE system, the same codebook is stored in both the base station side and the user side. In the embodiment of the present invention, the codebook stored in the base station side is referred to as a base station side codebook, and the codebook stored in the terminal side is referred to as a terminal side codebook. Since the embodiment of the present invention will involve modification of the codebook, the codebook before modification at the base station side is referred to as a first codebook at the base station side, and the modified codebook is referred to as a second codebook at the base station side; the codebook before modification at the terminal side is called a terminal side first codebook, and the codebook after modification is called a terminal side second codebook.
In this case, both the base station-side first codebook and the terminal-side first codebook are codebooks obtained based on a regular antenna array. The regular antenna array may be an antenna array corresponding to a codebook defined in the standard, and the first codebook at the base station side and the first codebook at the terminal side are codebooks defined in the standard. Or the regular antenna array is an antenna array corresponding to a newly designed codebook, and the first codebook at the base station side and the first codebook at the terminal side are newly designed codebooks. At this time, the base station may supplement the irregular antenna array with a regular antenna array (the regular antenna array corresponds to the first codebook on the base station side). Of course, the supplement herein is not a true supplement, but a virtual concept. That is, the antenna array of the base station is made to be a regular antenna array corresponding to the base station side first codebook in form by such supplementation. The antenna elements that are supplementary to the base station are referred to herein as supplementary antenna elements and these supplementary antenna elements are also not used for data transmission.
Based on the above two cases, in the embodiment of the present invention, the failed antenna element in the first case and the complementary antenna element in the second case are collectively referred to as a first type antenna element, and the actually existing effective antenna element in the antenna array is referred to as a second type antenna element. Wherein the first type of antenna elements are not used for data transmission; the second type of antenna element may be used for data transmission.
Through detection, the base station may determine, according to a first type antenna unit and a second type antenna unit in the antenna array, a first antenna port corresponding to the first type antenna unit and a second antenna port corresponding to the second type antenna unit. In practical applications, there may be zero, one or more first antenna elements or second antenna elements, and there may also be zero, one or more first antenna ports or second antenna ports.
In this embodiment, the notification message may be implemented using higher layer signaling. And the base station sends a high-level signaling to the terminal, wherein the high-level signaling carries the information of the first type of antenna units of the antenna array. The embodiment of the present invention is not limited in any way as to what type of higher layer signaling is used or in which field of the higher layer signaling carries the information.
In this embodiment, the information of the first type antenna elements of the antenna array may include information of the first antenna port, or include information of the second antenna port, or include both the information of the first antenna port and the information of the second antenna port.
The information of the first antenna port may be a port identifier of the first antenna port, or may be a row index of a precoding matrix corresponding to the first antenna port in a first codebook on the base station side, or may be a combination of the two. The information of the second antenna port may be a port identifier of the second antenna port, or may also be a row index of a precoding matrix corresponding to the second antenna port in the first codebook on the base station side, or may also be a combination of the two.
Of course, other information may be used as the information of the first antenna port or the second antenna port in practical applications, which is not listed here.
And step 12, sending a pilot signal to the terminal.
The base station may configure a zero transmit power pilot and a non-zero transmit power pilot. In the embodiment of the present invention, the base station may perform pilot configuration in the following two ways.
In a first manner, in this manner, the pilot signal sent by the first antenna port corresponding to the first type of antenna element in the antenna array may be configured as zero transmit power, and the pilot signal sent by the second antenna port corresponding to the second type of antenna element in the antenna array may be configured as non-zero transmit power. When transmitting a pilot signal to a terminal, the pilot signal is transmitted using a first antenna port and a second antenna port, respectively.
In this manner, since the first antenna port needs to transmit a pilot signal with zero transmit power, the location of the RE (Resource Element) corresponding to the pilot of the first antenna port cannot be used for PDSCH (physical downlink Shared Channel) transmission.
A second method is different from the first method in that in the second method, only the non-zero transmission power pilot is configured for the second antenna port, and no pilot is configured for the first antenna port. That is, in this manner, only the pilot signal transmit power of the second antenna port is set to non-zero. Then, when transmitting the pilot signal, the pilot signal is only transmitted using the second antenna port.
In this way, the first antenna port does not transmit a pilot signal and does not occupy the location of an RE (Resource Element). Therefore, the data transmission capacity can be further improved by the second method as compared with the first method.
Wherein the pilot signal includes, but is not limited to, a CSI-RS (channel state information measurement pilot) signal.
Step 13, receiving a precoding matrix indicator of a first precoding matrix sent by the terminal, wherein the precoding matrix indicator is determined by the terminal after channel estimation is performed according to the pilot signal and the notification message.
At the terminal side, because the first antenna unit exists in the antenna array of the base station, the terminal needs to modify the first codebook at the terminal side after performing channel estimation according to the pilot signal, so that the modified second codebook at the terminal side is suitable for the antenna array with the first antenna unit. Then, the first precoding matrix is selected from the second codebook of the terminal side after the terminal performs channel estimation. After the first precoding Matrix is selected, a Precoding Matrix Indicator (PMI) corresponding to the first precoding Matrix may be determined.
And step 14, determining a second precoding matrix according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix.
In this embodiment of the present invention, since the precoding matrix indicator corresponds to the first precoding matrix in the terminal-side second codebook, in this embodiment, the precoding matrix indicator may be an index of the first precoding matrix in the terminal-side second codebook, or may be an index of the first precoding matrix in the terminal-side first codebook. As to what form of precoding matrix indication is used in practical application, the base station and the terminal may decide in advance, that is, the system is configured with the precoding matrix indication of what form the terminal sends after channel estimation in advance. Of course, if the base station and the terminal do not make a prior agreement, the terminal may also notify the base station of the specific form of the precoding matrix indicator it employs.
In this embodiment, the method for the base station to determine the second precoding matrix is different according to different contents represented by the precoding matrix indicator.
In the first case, the precoding matrix indicator is an index of the first precoding matrix in a terminal-side second codebook.
When the precoding matrix indicator is an index of the first precoding matrix in the terminal side second codebook, the base station needs to modify the base station side first codebook and obtain the base station side second codebook, then determines a second precoding matrix in the base station side second codebook according to the precoding matrix indicator, and precodes data to be transmitted by using the second precoding matrix.
Specifically, when the base station modifies the first codebook on the base station side and obtains the second codebook on the base station side, in each precoding matrix included in the first codebook on the base station side, the row corresponding to the first antenna port corresponding to the first antenna unit in the antenna array is deleted, and then the codebook formed by each precoding matrix after the deletion operation is used as the second codebook on the base station side. And then, determining a corresponding second precoding matrix according to the index of the first precoding matrix in a second codebook at the terminal side.
In the second case, the precoding matrix indicator is an index of the first precoding matrix in a terminal-side first codebook.
When the precoding matrix indicator is an index of the first precoding matrix in the terminal-side first codebook, the base station may determine the second precoding matrix in the base-station-side first codebook directly according to the precoding matrix indicator.
As can be seen from the above, in the embodiment of the present invention, when there is a first type antenna unit of the antenna units that is not used for data transmission in the antenna array, the base station sends the pilot signal to the terminal, and also sends information of the first type antenna unit in the antenna array to the terminal. Therefore, when the terminal performs channel estimation according to the pilot signal, the situation of the first type antenna unit in the antenna array can be considered, and the precoding matrix indication of the first precoding matrix suitable for the specific situation of the antenna array can be obtained according to the channel estimation result. Then, after receiving the precoding matrix indicator of the first precoding matrix, the base station can accurately obtain a second precoding matrix for precoding data to be transmitted according to the precoding matrix indicator of the first precoding matrix.
Therefore, when the antenna array is an irregular antenna array, the base station can also accurately obtain the precoding matrix corresponding to the situation of the antenna array for precoding the data to be transmitted, so that the accuracy of data transmission is ensured.
As shown in fig. 2, the data processing method according to the second embodiment of the present invention is executed by a terminal, and includes:
step 21, receiving a notification message sent by a base station, where the notification message includes information of a first type of antenna unit of an antenna array of the base station.
The first type of antenna units of the antenna array comprise antenna units which are not used for data transmission, and the second type of antenna units of the antenna array comprise antenna units used for data transmission.
As described in the first embodiment, the notification message may be implemented using higher layer signaling. And the base station sends a high-level signaling to the terminal, wherein the high-level signaling carries the information of the first type of antenna unit. In this embodiment, the information of the first type antenna element of the antenna array may include information of the first antenna port, may also include information of the second antenna port, and may also include information of the first antenna port and information of the second antenna port at the same time.
The information of the first antenna port may be a port identifier of the first antenna port, or may be a row index of a precoding matrix corresponding to the first antenna port in a first codebook on the base station side, or may be a combination of the two. The information of the second antenna port may be a port identifier of the second antenna port, or may also be a row index of a precoding matrix corresponding to the second antenna port in the first codebook on the base station side, or may also be a combination of the two.
And step 22, receiving the pilot signal sent by the base station.
According to different pilot configurations of the base station to the antenna ports, the terminal can receive pilot signals sent by different types and numbers of antenna ports. If the base station transmits the pilot signal by using both the first antenna port and the second antenna port, the terminal receives the pilot signal transmitted by the first antenna port and the second antenna port. If the base station transmits a pilot signal using the second antenna port, the terminal receives the pilot signal transmitted by the second antenna port.
And step 23, performing channel estimation according to the pilot signal and the notification message, and determining a precoding matrix indicator of the first precoding matrix according to a channel estimation result.
In this manner, the terminal determines a second antenna port corresponding to a second type of antenna unit in the antenna array according to the notification message, and performs channel estimation according to a pilot signal of the second antenna port. Wherein the channel estimation process can be implemented using prior art channel estimation methods. Then, the terminal modifies the terminal side first codebook according to the notification message and obtains a terminal side second codebook.
Specifically, when the terminal side first codebook is modified, the terminal may be modified as follows.
Step 231, analyzing the notification message, and obtaining information of the first type antenna unit of the antenna array included in the notification message.
Step 232, the terminal side first codebook is processed.
Since the information of the first type antenna unit of the antenna array can be implemented in different forms, the terminal needs to perform different processing on the terminal-side first codebook according to the information in different forms. The method specifically comprises the following steps:
step 232a, when the information of the first antenna unit of the antenna array is the port identifier of the first antenna port corresponding to the first antenna unit or the row index of the precoding matrix corresponding to the first antenna port in the first codebook on the base station side, the terminal deletes the row corresponding to the first antenna port in each precoding matrix included in the first codebook on the terminal side according to the port identifier of the first antenna port or the row index of the precoding matrix corresponding to the first antenna port in the first codebook on the base station side.
Step 232b, when the information of the first antenna unit of the antenna array is the port identifier of the second antenna port corresponding to the second antenna unit in the antenna array or the row index of the precoding matrix corresponding to the second antenna port in the first codebook at the base station side, the terminal reserves the row corresponding to the second antenna port in each precoding matrix included in the first codebook at the terminal side according to the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook at the base station side, and deletes the rest rows.
In step 233, a codebook including each precoding matrix subjected to the erasure operation is set as the terminal-side second codebook.
And step 24, sending the precoding matrix indicator to the base station, so that the base station determines a second precoding matrix by using the precoding matrix indicator and precodes data to be transmitted by using the second precoding matrix.
After the terminal-side second codebook is determined, the terminal may determine the first precoding matrix from the terminal-side second codebook according to a result of the channel estimation, and thereby determine a precoding matrix indicator of the first precoding matrix. Specifically, the terminal may select the first precoding matrix from the second codebook on the terminal side according to the principle that the CQI is maximized. Then, the terminal may send a Channel State feedback message (CSI) to the base station, where the CSI includes the precoding matrix indicator.
Wherein the precoding matrix indicator of the first precoding matrix is an index of the first precoding matrix in a terminal side second codebook or an index of the first precoding matrix in a terminal side first codebook. As to what form of precoding matrix indication the terminal specifically sends, the terminal and the base station may determine according to a predetermined convention, or the terminal may send a notification message to the terminal at the same time as, before, or after sending the precoding matrix indication, so as to use the notification message to tell the base station what form of precoding matrix indication it sends.
In addition, the terminal may also send any one or two of the Rank (RI) of the first precoding matrix and the CQI that can be obtained using the first precoding matrix to the terminal.
In the embodiment of the invention, when the antenna array has the first type of antenna unit which is not used for data transmission, the base station sends the pilot signal to the terminal, and also sends the information of the first type of antenna unit in the antenna array to the terminal. Therefore, when the terminal performs channel estimation according to the pilot signal, the situation of the first type antenna unit in the antenna array can be considered, and the precoding matrix indication of the first precoding matrix suitable for the specific situation of the antenna array can be obtained according to the channel estimation result. Then, after receiving the precoding matrix indicator of the first precoding matrix, the base station can accurately obtain a second precoding matrix for precoding data to be transmitted according to the precoding matrix indicator of the first precoding matrix. Therefore, it can be seen from the above that, when the antenna array is an irregular antenna array, the base station can also accurately obtain the precoding matrix for precoding the data to be transmitted corresponding to the situation of the antenna array, thereby ensuring the accuracy of data transmission.
The following describes in detail the implementation process of the data processing method according to the embodiment of the present invention with reference to the third embodiment.
And detecting that the first type of antenna unit exists in the antenna array at the base station end, wherein fig. 3 shows a schematic diagram of an irregular antenna array used at the base station end. In the figure, the antenna units in the area a are second-class antenna units at the base station end, and the number of the antenna units is defined as M; the other antenna units are the first type antenna units at the base station end, and the number of the other antenna units is defined as Q. The sum of the first type antenna element and the second type antenna element is N, i.e., N is M + Q. Here, M, N, and Q are all natural numbers.
In this embodiment, a certain precoding matrix in the N-antenna port codebook is defined as W, and is expressed as:
where W is an N × r matrix, and r represents the number of streams for data transmission, i.e., the value of rank RI of precoding matrix W. Each row in the precoding matrix is used as a weight value to act on the corresponding antenna unit, i.e. the ith row v of Wi,1,vi,2,…,vi,rActing on the i-th antenna element of the antenna array. If the antenna array is a dual-polarized antenna arrayThe first N/2 rows correspond to antenna elements of the first polarization direction and the last N/2 rows correspond to antenna elements of the second polarization direction.
As shown in fig. 4, the data processing method according to the third embodiment of the present invention includes:
step 41, the base station performs pilot configuration on the antenna port by using any one of the following manners.
The method I is to configure an N-port pilot frequency and an N-port codebook.
Here, the pilot signal powers transmitted by the Q antenna ports corresponding to the first antenna elements are set to zero, and the pilot signal powers transmitted by the M antenna ports corresponding to the second antenna elements are set to non-zero. At this time, the RE positions where the Q zero transmit power pilots are located cannot be used for PDSCH transmission.
And the second mode is to configure M port pilot frequency and an N port codebook.
Here, the pilot powers transmitted by the M antenna ports corresponding to the second type of antenna unit are configured to be non-zero, and the Q antenna ports corresponding to the first type of antenna unit are not configured to be pilot.
And step 42, the base station sends a pilot signal to the terminal according to the configuration result.
Corresponding to the first mode, the base station transmits pilot signals by using the N antenna ports; corresponding to the second embodiment, the base station transmits the pilot signal using M antenna ports.
And step 43, the base station sends a notification message to the terminal.
Corresponding to the above two modes, in this step, the notification message may carry the identifier corresponding to the Q antenna ports, or carry the row index of the precoding matrix corresponding to the Q antenna ports in the first codebook at the base station side, or carry both of them. Or, corresponding to the above two manners, the notification message may carry the identifier corresponding to the M antenna ports, or carry the row index of the precoding matrix corresponding to the M antenna ports in the first codebook at the base station side, or carry both of them. Or, corresponding to the above two modes, the information of the Q antenna ports is carried, and the information of the M antenna ports is also carried.
Wherein steps 42 and 43 are performed without a precedence relationship.
And step 44, the terminal carries out channel estimation according to the pilot signal and the notification message.
And step 45, the terminal modifies the first codebook of the terminal side according to the notification message to obtain a second codebook of the terminal side.
In this embodiment, in any precoding matrix of the first codebook on the terminal side, the terminal deletes the rows corresponding to the Q antenna ports with zero transmit power from the precoding matrix, and obtains a precoding matrix W' matching the channel measured by using the non-zero transmit power pilot. Where W' is an M x r matrix. The set of W' constitutes the terminal side second codebook. The size of this terminal-side second codebook may be smaller than the size of the N-port codebook.
For example, assuming that the base station uses a dual-polarized antenna array, and Q failed antennas notified by the base station are located in the last row of the antenna array, there are:
and step 46, the terminal determines a first precoding matrix from the terminal side second codebook according to the channel estimation result, and obtains a precoding matrix indicator of the first precoding matrix.
And step 47, the terminal sends the precoding matrix indication to the base station.
In addition, the terminal may also send any one or two of the Rank (RI) of the first precoding matrix and the CQI that can be obtained using the first precoding matrix to the terminal.
And step 48, the base station determines a second precoding matrix according to the precoding matrix indication, and precodes the data to be transmitted by utilizing the second precoding matrix.
In this embodiment, the base station may determine the second precoding matrix in two different ways according to different contents represented by the precoding matrix indicator.
When the precoding matrix indicator is an index of the first precoding matrix in a terminal side second codebook, the base station modifies the base station side first codebook and obtains a base station side second codebook, then determines a second precoding matrix in the base station side second codebook according to the precoding matrix indicator, and precodes data to be transmitted by using the second precoding matrix.
Specifically, when the base station modifies the first codebook on the base station side and obtains the second codebook on the base station side, in each precoding matrix included in the first codebook on the base station side, the row corresponding to the first antenna port corresponding to the first antenna unit in the antenna array is deleted, and then the codebook formed by each precoding matrix after the deletion operation is used as the second codebook on the base station side.
And when the precoding matrix indicator is the index of the first precoding matrix in the first codebook at the terminal side, determining a second precoding matrix in the first codebook at the base station side according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix.
It can be seen from the above that, when the antenna array is an irregular antenna array, the base station can also accurately obtain the precoding matrix for precoding the data to be transmitted corresponding to the situation of the antenna array, thereby ensuring the accuracy of data transmission.
As shown in fig. 5, a fourth embodiment of the present invention provides a data processing apparatus, including:
a message sending module 51, configured to send a notification message to a terminal, where the notification message carries information of a first type antenna unit of an antenna array; wherein the first type of antenna elements comprises antenna elements not used for data transmission; the antenna array further comprises a second type of antenna elements, the second type of antenna elements comprising antenna elements for data transmission;
a signal processing module 52, configured to send a pilot signal to the terminal;
an information receiving module 53, configured to receive a precoding matrix indicator of a first precoding matrix sent by the terminal, where the precoding matrix indicator is determined by the terminal after performing channel estimation according to the pilot signal and the notification message;
and the data processing module 54 is configured to determine a second precoding matrix according to the precoding matrix indicator, and precode data to be transmitted by using the second precoding matrix.
Wherein, the message sending module 51 may include:
the port determining submodule is used for determining a first antenna port corresponding to a first type antenna unit and a second antenna port corresponding to a second type antenna unit according to the first type antenna unit and the second type antenna unit in the antenna array;
the information acquisition sub-module is configured to acquire information of a first type antenna unit of the antenna array, where the information of the first type antenna unit of the antenna array includes any combination of the following information: a port identification of the first antenna port; the row index of a precoding matrix corresponding to the first antenna port in a first codebook at a base station side; a port identification of the second antenna port; the row index of a precoding matrix corresponding to the second antenna port in the first codebook at the base station side;
and the sending submodule is used for sending a high-level signaling to the terminal, wherein the high-level signaling carries the information of the first type of antenna units of the antenna array.
The signal processing module 52 may have different structures. For example, the signal processing module 52 may include: the first setting submodule is used for setting the pilot signal transmitting power of a first antenna port corresponding to the first type of antenna unit to be zero and setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero; and the first sending submodule is used for sending pilot signals by using the first antenna port and the second antenna port respectively. Alternatively, the signal processing module 52 may further include: the second setting submodule is used for setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero; and the second sending submodule is used for sending the pilot signal by using the second antenna port.
Wherein the data processing module 54 comprises: a codebook modification submodule, configured to modify the first codebook on the base station side and obtain the second codebook on the base station side when the precoding matrix indicator is an index of the first precoding matrix in the second codebook on the terminal side; and the precoding submodule is used for determining a second precoding matrix in a second codebook at the base station side according to the precoding matrix indication and precoding data to be transmitted by using the second precoding matrix.
Specifically, the codebook modification sub-module includes: a deleting unit, configured to delete, in each precoding matrix included in the first codebook on the base station side, a row corresponding to the first antenna port corresponding to the first antenna unit; and a generating unit configured to use a codebook including each of the precoding matrices subjected to the erasure operation as the base station side second codebook.
In a specific application, the data processing module 54 is specifically configured to: and when the precoding matrix indicator is the index of the first precoding matrix in the first codebook at the terminal side, determining a second precoding matrix in the first codebook at the base station side according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix.
The working principle of the device of the present invention can refer to the description of the foregoing method embodiments, and the device can be located in a base station.
It can be seen from the above that, when the antenna array is an irregular antenna array, the base station can also accurately obtain the precoding matrix for precoding the data to be transmitted corresponding to the situation of the antenna array, thereby ensuring the accuracy of data transmission.
As shown in fig. 6, a fifth embodiment of the present invention provides a data processing apparatus, including:
a message receiving module 61, configured to receive a notification message sent by a base station, where the notification message includes information of a first type of antenna unit of an antenna array of the base station; the antenna array further comprises a second type of antenna unit, and the second type of antenna unit comprises an antenna unit used for data transmission;
a signal receiving module 62, configured to receive a pilot signal sent by the base station;
a channel estimation module 63, configured to perform channel estimation according to the pilot signal and the notification message, and determine a precoding matrix indicator of a first precoding matrix according to a channel estimation result;
an information sending module 64, configured to send the precoding matrix indicator to the base station, so that the base station determines a second precoding matrix by using the precoding matrix indicator and precodes data to be transmitted by using the second precoding matrix.
Wherein the channel estimation module 63 includes: the channel estimation submodule is used for determining a second antenna port corresponding to the second type of antenna unit according to the notification message and carrying out channel estimation according to a pilot signal sent by the second antenna port; the codebook processing submodule is used for modifying the first codebook at the terminal side according to the notification message and acquiring a second codebook at the terminal side; and the information acquisition submodule is used for determining a first precoding matrix from the second codebook at the terminal side according to the channel estimation result and acquiring the precoding matrix indication of the first precoding matrix.
Specifically, the codebook processing sub-module may include:
the analysis unit is used for analyzing the notification message to obtain the information of the first type antenna unit of the antenna array included in the notification message;
a first codebook modifying unit, configured to delete, when information of a first antenna unit of the antenna array is a port identifier of a first antenna port corresponding to the first antenna unit or a row index of a precoding matrix corresponding to the first antenna port in a first codebook on a base station side, a row corresponding to the first antenna port in each precoding matrix included in the first codebook on the terminal side according to the port identifier of the first antenna port or the row index of the precoding matrix corresponding to the first antenna port in the first codebook on the base station side;
a second codebook modification unit, configured to, when information of a first type antenna unit of the antenna array is a port identifier of the second antenna port or a row index of a precoding matrix corresponding to the second antenna port in the first codebook on the base station side, reserve a row corresponding to the second antenna port in each precoding matrix included in the first codebook on the terminal side and delete the remaining rows according to the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook on the base station side;
and a generating unit configured to use a codebook including the precoding matrices subjected to the erasure operation as the terminal-side second codebook.
The information sending module 64 is specifically configured to: and sending a channel state feedback message to the base station, wherein the channel state feedback message comprises the precoding matrix indication.
The working principle of the device of the present invention can refer to the description of the foregoing method embodiments, and the device can be located in a terminal.
It can be seen from the above that, when the antenna array is an irregular antenna array, the base station can also accurately obtain the precoding matrix for precoding the data to be transmitted corresponding to the situation of the antenna array, thereby ensuring the accuracy of data transmission.
An embodiment of the present invention provides a data processing apparatus, including: a processor; and a memory connected to the processor through a bus interface, the memory being used to store programs and data used by the processor in performing operations, and when the processor calls and executes the programs and data stored in the memory, the memory including functional modules or units implementing:
the information sending module is used for sending a notification message to the terminal, wherein the notification message carries information of a first type of antenna unit of the antenna array; wherein the first type of antenna elements comprises antenna elements not used for data transmission; the antenna array further comprises a second type of antenna elements comprising antenna elements for data transmission
The signal processing module is used for sending a pilot signal to the terminal;
an information receiving module, configured to receive a precoding matrix indicator of a first precoding matrix sent by the terminal, where the precoding matrix indicator is determined by the terminal after performing channel estimation according to the pilot signal and the notification message;
and the data processing module is used for determining a second precoding matrix according to the precoding matrix indication and precoding data to be transmitted by utilizing the second precoding matrix.
An embodiment of the present invention provides a data processing apparatus, including: a processor; and a memory connected to the processor through a bus interface, the memory being used to store programs and data used by the processor in performing operations, and when the processor calls and executes the programs and data stored in the memory, the memory including functional modules or units implementing:
a message receiving module, configured to receive a notification message sent by a base station, where the notification message includes information of a first type of antenna unit of an antenna array of the base station; the antenna array further comprises a second type of antenna unit, and the second type of antenna unit comprises an antenna unit used for data transmission;
a signal receiving module, configured to receive a pilot signal sent by the base station;
a channel estimation module, configured to perform channel estimation according to the pilot signal and the notification message, and determine a precoding matrix indicator of a first precoding matrix according to a channel estimation result;
and the information sending module is used for sending the precoding matrix indication to the base station, so that the base station determines a second precoding matrix by using the precoding matrix indication and precodes data to be transmitted by using the second precoding matrix.
It should be noted that the apparatuses provided in the sixth and seventh embodiments of the present invention are apparatuses capable of correspondingly implementing the network fragment-based paging method provided in the foregoing method embodiments, so that all embodiments of the network fragment-based paging method provided in the foregoing method embodiments can be correspondingly applied to the sixth and seventh embodiments, and can achieve the same or similar beneficial effects.
It should be noted that the apparatuses provided in the sixth and seventh embodiments of the present invention are apparatuses capable of correspondingly implementing the data processing method provided in the foregoing method embodiments, so that all the embodiments based on the data processing method provided in the foregoing method embodiments can be correspondingly applied to the sixth and seventh embodiments, and can achieve the same or similar beneficial effects.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (24)

1. A data processing method, comprising:
sending a notification message to a terminal, wherein the notification message carries information of a first type of antenna unit of an antenna array; wherein the first type of antenna elements comprises antenna elements not used for data transmission; the antenna array further comprises a second type of antenna elements, the second type of antenna elements comprising antenna elements for data transmission;
transmitting a pilot signal to the terminal;
receiving a precoding matrix indicator of a first precoding matrix sent by the terminal, wherein the precoding matrix indicator is determined by the terminal after channel estimation is carried out according to the pilot signal and the notification message; the pilot signals are transmitted through a second antenna port corresponding to the second type of antenna unit determined according to the notification message;
and determining a second precoding matrix according to the precoding matrix indication, and precoding data to be transmitted by using the second precoding matrix.
2. The method of claim 1, wherein the sending a notification message to a terminal, the notification message carrying information of a first type of antenna element of the antenna array comprises:
determining a first antenna port corresponding to a first type antenna unit and a second antenna port corresponding to a second type antenna unit according to the first type antenna unit and the second type antenna unit in the antenna array;
acquiring information of a first type antenna unit of the antenna array, wherein the information of the first type antenna unit of the antenna array comprises any combination of the following information: a port identification of the first antenna port; the row index of a precoding matrix corresponding to the first antenna port in a first codebook at a base station side; a port identification of the second antenna port; the row index of a precoding matrix corresponding to the second antenna port in the first codebook at the base station side;
and sending a high-level signaling to the terminal, wherein the high-level signaling carries the information of the first type of antenna units of the antenna array.
3. The method of claim 1, wherein the sending the pilot signal to the terminal comprises:
setting the pilot signal transmitting power of a first antenna port corresponding to the first type of antenna unit to be zero, and setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
and respectively transmitting pilot signals by using the first antenna port and the second antenna port.
4. The method of claim 1, wherein the sending the pilot signal to the terminal comprises:
setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
transmitting a pilot signal using the second antenna port.
5. The method according to any of claims 1-4, wherein the determining a second precoding matrix according to the precoding matrix indicator and precoding data to be transmitted using the second precoding matrix comprises:
when the precoding matrix indicator is the index of the first precoding matrix in a second codebook at the terminal side, modifying the first codebook at the base station side and obtaining the second codebook at the base station side;
and determining a second precoding matrix in a second codebook at the base station side according to the precoding matrix indication, and precoding data to be transmitted by using the second precoding matrix.
6. The method of claim 5, wherein the modifying the first codebook on the base station side and obtaining the second codebook on the base station side comprises:
deleting rows corresponding to the first antenna ports corresponding to the first type of antenna units in each precoding matrix included in the first codebook at the base station side;
and taking a codebook formed by each precoding matrix subjected to the deleting operation as the second codebook on the base station side.
7. The method according to any of claims 1-4, wherein the determining a second precoding matrix according to the precoding matrix indicator and precoding data to be transmitted using the second precoding matrix comprises:
and when the precoding matrix indicator is the index of the first precoding matrix in the first codebook at the terminal side, determining a second precoding matrix in the first codebook at the base station side according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix.
8. A data processing method, comprising:
receiving a notification message sent by a base station, wherein the notification message comprises information of a first type of antenna unit of an antenna array of the base station; the antenna array further comprises a second type of antenna unit, and the second type of antenna unit comprises an antenna unit used for data transmission;
receiving a pilot signal sent by the base station; the pilot signals are transmitted through a second antenna port corresponding to the second type of antenna unit determined according to the notification message;
performing channel estimation according to the pilot signal and the notification message, and determining a precoding matrix indicator of a first precoding matrix according to a channel estimation result;
and sending the precoding matrix indication to the base station, so that the base station determines a second precoding matrix by using the precoding matrix indication and precodes data to be transmitted by using the second precoding matrix.
9. The method of claim 8, wherein the performing channel estimation according to the pilot signal and the notification message, and determining the precoding matrix indicator of the first precoding matrix according to the channel estimation result comprises:
determining a second antenna port corresponding to the second type antenna unit according to the notification message, and performing channel estimation according to a pilot signal sent by the second antenna port;
modifying the first codebook at the terminal side according to the notification message and obtaining a second codebook at the terminal side;
and determining a first precoding matrix from a second codebook at the terminal side according to the channel estimation result, and obtaining a precoding matrix indicator of the first precoding matrix.
10. The method of claim 9, wherein the modifying the terminal-side first codebook and obtaining the terminal-side second codebook according to the notification message comprises:
analyzing the notification message to obtain information of a first type of antenna unit of the antenna array included in the notification message;
when the information of the first antenna unit of the antenna array is a port identifier of a first antenna port corresponding to the first antenna unit or a row index of a precoding matrix corresponding to the first antenna port in a first codebook at a base station side, deleting a row corresponding to the first antenna port in each precoding matrix included in the first codebook at the terminal side according to the port identifier of the first antenna port or the row index of the precoding matrix corresponding to the first antenna port in the first codebook at the base station side;
when the information of the first-class antenna unit of the antenna array is the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook at the base station side, reserving the row corresponding to the second antenna port in each precoding matrix included in the first codebook at the terminal side and deleting the rest rows according to the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook at the base station side;
and taking a codebook formed by each precoding matrix subjected to the deleting operation as the terminal side second codebook.
11. The method of claim 8, wherein the sending the precoding matrix indicator to the base station comprises:
and sending a channel state feedback message to the base station, wherein the channel state feedback message comprises the precoding matrix indication.
12. The method of claim 11, wherein the channel state feedback message further comprises: rank and/or channel quality indication of the terminal side second codebook.
13. The method according to any of claims 8-12, wherein the precoding matrix indicator of the first precoding matrix is an index of the first precoding matrix in the terminal-side second codebook or an index of the first precoding matrix in the terminal-side first codebook.
14. A data processing apparatus, comprising:
the information sending module is used for sending a notification message to the terminal, wherein the notification message carries information of a first type of antenna unit of the antenna array; wherein the first type of antenna elements comprises antenna elements not used for data transmission; the antenna array further comprises a second type of antenna elements, the second type of antenna elements comprising antenna elements for data transmission;
the signal processing module is used for sending a pilot signal to the terminal;
an information receiving module, configured to receive a precoding matrix indicator of a first precoding matrix sent by the terminal, where the precoding matrix indicator is determined by the terminal after performing channel estimation according to the pilot signal and the notification message; the pilot signals are transmitted through a second antenna port corresponding to the second type of antenna unit determined according to the notification message;
and the data processing module is used for determining a second precoding matrix according to the precoding matrix indication and precoding data to be transmitted by utilizing the second precoding matrix.
15. The apparatus of claim 14, wherein the messaging module comprises:
the port determining submodule is used for determining a first antenna port corresponding to a first type antenna unit and a second antenna port corresponding to a second type antenna unit according to the first type antenna unit and the second type antenna unit in the antenna array;
the information acquisition sub-module is configured to acquire information of a first type antenna unit of the antenna array, where the information of the first type antenna unit of the antenna array includes any combination of the following information: a port identification of the first antenna port; the row index of a precoding matrix corresponding to the first antenna port in a first codebook at a base station side; a port identification of the second antenna port; the row index of a precoding matrix corresponding to the second antenna port in the first codebook at the base station side;
and the sending submodule is used for sending a high-level signaling to the terminal, wherein the high-level signaling carries the information of the first type of antenna units of the antenna array.
16. The apparatus of claim 14, wherein the signal processing module comprises:
the first setting submodule is used for setting the pilot signal transmitting power of a first antenna port corresponding to the first type of antenna unit to be zero and setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
and the first sending submodule is used for sending pilot signals by using the first antenna port and the second antenna port respectively.
17. The apparatus of claim 14, wherein the signal processing module comprises:
the second setting submodule is used for setting the pilot signal transmitting power of a second antenna port corresponding to the second type of antenna unit to be nonzero;
and the second sending submodule is used for sending the pilot signal by using the second antenna port.
18. The apparatus according to any one of claims 14-17, wherein the data processing module comprises:
a codebook modification submodule, configured to modify the first codebook on the base station side and obtain the second codebook on the base station side when the precoding matrix indicator is an index of the first precoding matrix in the second codebook on the terminal side;
and the precoding submodule is used for determining a second precoding matrix in a second codebook at the base station side according to the precoding matrix indication and precoding data to be transmitted by using the second precoding matrix.
19. The apparatus of claim 18, wherein the codebook modification submodule comprises:
a deleting unit, configured to delete, in each precoding matrix included in the first codebook on the base station side, a row corresponding to the first antenna port corresponding to the first antenna unit;
and a generating unit configured to use a codebook including each of the precoding matrices subjected to the erasure operation as the base station side second codebook.
20. The apparatus according to any one of claims 14 to 17, wherein the data processing module is specifically configured to: and when the precoding matrix indicator is the index of the first precoding matrix in the first codebook at the terminal side, determining a second precoding matrix in the first codebook at the base station side according to the precoding matrix indicator, and precoding data to be transmitted by using the second precoding matrix.
21. A data processing apparatus, comprising:
a message receiving module, configured to receive a notification message sent by a base station, where the notification message includes information of a first type of antenna unit of an antenna array of the base station; the antenna array further comprises a second type of antenna unit, and the second type of antenna unit comprises an antenna unit used for data transmission;
a signal receiving module, configured to receive a pilot signal sent by the base station; the pilot signals are transmitted through a second antenna port corresponding to the second type of antenna unit determined according to the notification message;
a channel estimation module, configured to perform channel estimation according to the pilot signal and the notification message, and determine a precoding matrix indicator of a first precoding matrix according to a channel estimation result;
and the information sending module is used for sending the precoding matrix indication to the base station, so that the base station determines a second precoding matrix by using the precoding matrix indication and precodes data to be transmitted by using the second precoding matrix.
22. The apparatus of claim 21, wherein the channel estimation module comprises:
the channel estimation submodule is used for determining a second antenna port corresponding to the second type of antenna unit according to the notification message and carrying out channel estimation according to a pilot signal sent by the second antenna port;
the codebook processing submodule is used for modifying the first codebook at the terminal side according to the notification message and acquiring a second codebook at the terminal side;
and the information acquisition submodule is used for determining a first precoding matrix from the second codebook at the terminal side according to the channel estimation result and acquiring the precoding matrix indication of the first precoding matrix.
23. The apparatus of claim 22, wherein the codebook processing submodule comprises:
the analysis unit is used for analyzing the notification message to obtain the information of the first type antenna unit of the antenna array included in the notification message;
a first codebook modifying unit, configured to delete, when information of a first antenna unit of the antenna array is a port identifier of a first antenna port corresponding to the first antenna unit or a row index of a precoding matrix corresponding to the first antenna port in a first codebook on a base station side, a row corresponding to the first antenna port in each precoding matrix included in the first codebook on the terminal side according to the port identifier of the first antenna port or the row index of the precoding matrix corresponding to the first antenna port in the first codebook on the base station side;
a second codebook modification unit, configured to, when information of a first type antenna unit of the antenna array is a port identifier of the second antenna port or a row index of a precoding matrix corresponding to the second antenna port in the first codebook on the base station side, reserve a row corresponding to the second antenna port in each precoding matrix included in the first codebook on the terminal side and delete the remaining rows according to the port identifier of the second antenna port or the row index of the precoding matrix corresponding to the second antenna port in the first codebook on the base station side;
and a generating unit configured to use a codebook including the precoding matrices subjected to the erasure operation as the terminal-side second codebook.
24. The apparatus according to any of claims 21-23, wherein the information sending module is specifically configured to: and sending a channel state feedback message to the base station, wherein the channel state feedback message comprises the precoding matrix indication.
CN201610188517.7A 2016-03-24 2016-03-29 Data processing method and device Active CN107231223B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2016101738290 2016-03-24
CN201610173829 2016-03-24

Publications (2)

Publication Number Publication Date
CN107231223A CN107231223A (en) 2017-10-03
CN107231223B true CN107231223B (en) 2019-12-27

Family

ID=59932944

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610188517.7A Active CN107231223B (en) 2016-03-24 2016-03-29 Data processing method and device

Country Status (1)

Country Link
CN (1) CN107231223B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111213323B (en) * 2017-12-08 2022-03-01 上海朗帛通信技术有限公司 Method and device used in user equipment and base station for wireless communication
CN113872649B (en) * 2020-06-30 2023-03-10 华为技术有限公司 Feedback method of channel state information and communication device
CN114726420B (en) * 2021-01-05 2024-07-02 中国移动通信有限公司研究院 Precoding method, information determining method and device
CN117176209A (en) * 2022-05-27 2023-12-05 中兴通讯股份有限公司 Method for channel information feedback, electronic device and computer readable medium
CN117640295A (en) * 2022-08-12 2024-03-01 华为技术有限公司 Method and device for data communication
CN115549733B (en) * 2022-09-16 2023-10-03 国家工业信息安全发展研究中心 Asymmetric communication array, system and signal processing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104009785A (en) * 2013-02-25 2014-08-27 华为技术有限公司 Codebook feedback method, user equipment and base station
CN104202276A (en) * 2014-07-16 2014-12-10 中兴通讯股份有限公司 Channel information quantized feedback method and device and data precoding method and device
CN105391479A (en) * 2014-08-27 2016-03-09 中国电信股份有限公司 Method, base station and system for feeding back codebook in LTE network through terminal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7702029B2 (en) * 2006-10-02 2010-04-20 Freescale Semiconductor, Inc. MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
US9537552B2 (en) * 2014-09-12 2017-01-03 Samsung Electronics Co., Ltd. Method and apparatus for channel state information based on antenna mapping and subsampling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104009785A (en) * 2013-02-25 2014-08-27 华为技术有限公司 Codebook feedback method, user equipment and base station
CN104202276A (en) * 2014-07-16 2014-12-10 中兴通讯股份有限公司 Channel information quantized feedback method and device and data precoding method and device
CN105391479A (en) * 2014-08-27 2016-03-09 中国电信股份有限公司 Method, base station and system for feeding back codebook in LTE network through terminal

Also Published As

Publication number Publication date
CN107231223A (en) 2017-10-03

Similar Documents

Publication Publication Date Title
US10735064B2 (en) Method for determining precoding matrix indicator, user equipment, and base station
CN107231223B (en) Data processing method and device
CN107148790B (en) System and method for beamforming channel state reference signals
US10868600B2 (en) Method for reporting and receiving channel state information, and device
EP2985923B1 (en) Method for determining precoding matrix indicator, user equipment, and base station
US10582479B2 (en) Resource selection method and apparatus, and electronic device
CN107733595B (en) Method and apparatus for transmission and reporting of channel state information reference signals
CN106411374B (en) FD MIMO system channel state information feedback method and related equipment
US10574409B2 (en) Information notification method and channel state information process execution method
CN114337953B (en) Method and device for determining and configuring uplink channel parameters
CN107733506B (en) CSI processing method, CSI measurement pilot frequency resource transmission method and device
CN106559113B (en) Subset selection method of channel information measurement pilot frequency resource, terminal and base station
CN108631844B (en) Method, terminal and network side equipment for acquiring channel state information
CN107733495A (en) Channel condition information processing method, device, system, terminal and base station

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

CP01 Change in the name or title of a patent holder
TR01 Transfer of patent right

Effective date of registration: 20210607

Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing

Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd.

Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

TR01 Transfer of patent right