CN110620643B - DMRS pilot frequency scrambling code configuration information distribution method, device, equipment and storage medium - Google Patents
DMRS pilot frequency scrambling code configuration information distribution method, device, equipment and storage medium Download PDFInfo
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- CN110620643B CN110620643B CN201810647015.5A CN201810647015A CN110620643B CN 110620643 B CN110620643 B CN 110620643B CN 201810647015 A CN201810647015 A CN 201810647015A CN 110620643 B CN110620643 B CN 110620643B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Abstract
The embodiment of the invention discloses a method, a device, equipment and a storage medium for allocating DMRS pilot frequency scrambling code configuration information, and relates to the technical field of communication. The method comprises the following steps: acquiring space packets of space division multiplexing same time-frequency resources; sequencing each terminal according to the arrival direction of each terminal in the null packet; acquiring the code word quantity of each terminal, and sequentially determining the DMRS pilot scrambling code configuration information and the antenna port number of each terminal according to the code word quantity and the sequence of each terminal; and determining the value of the relevant field of the downlink control information of each terminal according to the DMRS pilot scrambling code configuration information, the antenna port number and the code word data of each terminal, and sending the relevant field value to each terminal. The embodiment of the invention can ensure that the DMRS of the terminals of adjacent beams in the space division packet are orthogonal, reduce the interference between the terminals and improve the demodulation performance of the terminals.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to Demodulation Reference Signal (DMRS) DMRS pilot scrambling configuration information NSCIDDistribution method, apparatus, device and storage medium.
Background
With the continuous development of the fourth generation mobile communication system, a Massive Multiple-Input Multiple-Output (M-MIMO) antenna technology will become an important technology for increasing network capacity.
In a Frequency Division Duplex (FDD) system, Directions Of Arrival (DOA) Of uplink and downlink channels have reciprocity, an M-MIMO technology divides a cell into a plurality Of prefabricated beam covers according to a DOA range, an activated beam is selected for a terminal according to a certain strategy, and a base station transmits data to the terminal by activating the beam. Terminals with no intersection of the activated beams can spatially multiplex the same time-frequency resources, so that the network capacity is improved.
TM9 is a key transmission mode in the FDD system, and supports up to 8 layers of transmission, and uses antenna ports 7 to 14 to demodulate Downlink data according to a specific reference signal of a user terminal, i.e., DMRS, and measure the DMRS to obtain Channel estimation of a Physical Downlink Shared Channel (PDSCH) of the terminal. N is a radical ofSCIDDetermining the initial sequence used by DMRS, space division for different user terminals, and using different NSCIDDMRSs of different user terminals may be made orthogonal.
Currently, in FDD mode, M-MIMO technology strategy may have a problem for TM9 users: in the case of space division multiplexing, in the same null packet, if NSCIDIf the allocation is not proper, the DMRSs of the adjacent beams may interfere with each other, thereby affecting the demodulation performance of the terminal.
Disclosure of Invention
In view of the above, an object of the embodiments of the present invention is to provide a method, an apparatus, a device and a storage medium for allocating DMRS pilot scrambling code configuration information, so as to solve the problem that in the case of space division multiplexing, if N is in the same null packet, N is the sameSCIDAnd if the allocation is not proper, the DMRSs of the adjacent beams may interfere with each other, thereby affecting the demodulation performance of the terminal.
The technical scheme adopted by the invention for solving the technical problems is as follows:
according to an aspect of the embodiments of the present invention, a method for allocating DMRS pilot scrambling code configuration information is provided, where the method includes:
acquiring space packets of space division multiplexing same time-frequency resources;
sequencing each terminal according to the arrival direction of each terminal in the null packet;
acquiring the code word quantity of each terminal, and sequentially determining the DMRS pilot scrambling code configuration information and the antenna port number of each terminal according to the code word quantity and the sequence of each terminal;
and determining the value of the relevant field of the downlink control information of each terminal according to the DMRS pilot scrambling code configuration information, the antenna port number and the code word data of each terminal, and sending the relevant field value to each terminal.
According to another aspect of the embodiments of the present invention, there is provided an apparatus for allocating DMRS pilot scrambling code configuration information, the apparatus including:
the space packet acquisition unit is used for acquiring space packets of space division multiplexing same time-frequency resources;
a sorting unit, configured to sort the terminals according to the directions of arrival of the terminals in the null packet;
an information configuration unit, configured to obtain the number of code words of each terminal, and sequentially determine DMRS pilot scrambling configuration information and an antenna port number of each terminal according to the number of code words of each terminal and the sequence;
and the field value issuing unit is used for determining the downlink control information related field value of each terminal according to the DMRS pilot scrambling code configuration information, the antenna port number and the code word data of each terminal and issuing the related field value to each terminal.
According to another aspect of the embodiments of the present invention, there is provided a DMRS pilot scrambling code configuration information allocation device, which includes a memory, a processor, and a computer program stored in the memory and being executable on the processor, where the computer program is executed by the processor to implement the steps of the DMRS pilot scrambling code configuration information allocation method.
According to still another aspect of the embodiments of the present invention, there is provided a storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the above DMRS pilot scrambling code configuration information allocation method.
In the method, the device, the equipment and the storage medium for allocating the DMRS pilot scrambling code configuration information, which are provided by the embodiment of the invention, the terminals are firstly sequenced according to the direction of arrival of the terminals in the space packet, then the code word number of the terminals is obtained, and the DMRS pilot scrambling code configuration information and the antenna port number of the terminals are sequentially determined according to the code word number of the terminals and the sequencing, so that the DMRS of the terminals with adjacent beams in the space packet can be orthogonal, the interference between the terminals is reduced, and the demodulation performance of the terminals is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic flow chart illustrating an implementation of a DMRS pilot scrambling code configuration information allocation method according to an embodiment of the present invention;
fig. 2 is a schematic flowchart illustrating an implementation of a DMRS pilot scrambling code configuration information allocation method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating an implementation of a DMRS pilot scrambling code configuration information allocation method according to a third embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating an implementation of a DMRS pilot scrambling code configuration information allocation method according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for allocating DMRS pilot scrambling code configuration information according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of DMRS pilot scrambling code configuration information allocation equipment according to a sixth embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Fig. 1 is a schematic flow chart illustrating an implementation process of a DMRS pilot scrambling code configuration information allocation method according to an embodiment of the present invention, where an implementation subject of the method is a DMRS pilot scrambling code configuration information allocation device/apparatus deployed on a base station side. Referring to fig. 1, the method for allocating DMRS pilot scrambling code configuration information provided in this embodiment includes the following steps:
step S101, obtaining space division multiplexing space division groups with the same time frequency resources.
Preferably, in this embodiment, step S101 specifically includes:
and determining space packets of space division multiplexing same time-frequency resources according to the activated wave beams of the terminal.
In this embodiment, before sending downlink data to the terminal, the base station side controls the antenna array of the base station to form a beam pointing to the user terminal, that is, an active beam of the terminal, and then determines a null packet according to whether an intersection exists between active beams of different terminals.
Preferably, in this embodiment, the determining, according to the active beam of the terminal, a space division packet that spatially multiplexes the same time-frequency resource includes:
and judging the activated beams of the terminal, forming null packets for the terminal without intersection of the activated beams, and spatially multiplexing the same time-frequency resources.
In this embodiment, the null packet is formed by selecting the terminals with non-intersecting active beams, so that the problem of mutual interference when the terminals in the same null packet spatially multiplex the same time-frequency resource can be avoided.
And step S102, sequencing the terminals according to the arrival direction of the terminals in the null packet.
Preferably, in this embodiment, step S102 specifically includes:
judging whether the angle range of the direction of arrival of each terminal is stored;
if the angle ranges of the wave directions of the terminals are stored, sorting the terminals in a descending or ascending manner according to the angle ranges of the wave directions of the terminals;
and if the angle range of the direction of arrival of each terminal is not stored, sorting the terminals in a descending or ascending manner according to the horizontal beam index or the vertical beam index.
In this embodiment, the DMRS pilot scrambling code configuration information allocation apparatus/device on the base station side may obtain the angle range of each terminal in the null packet in advance through the DOA technique, store the angle range in the base station side, and call the obtained angle range after the null packet is determined. After the null grouping is determined, if the base station side stores the angle range of each terminal DOA, the device/equipment calls the angle range of each terminal DOA and sorts the terminals according to the angle range of each terminal DOA in a descending or ascending manner; and if the base station side does not store the DOA angle range of each terminal, sequencing each terminal in a descending or ascending mode according to the horizontal beam index or the vertical beam index of the activated beam of each terminal in the null group.
Step S103, acquiring the code word quantity of each terminal, and sequentially determining the DMRS pilot scrambling code configuration information and the antenna port number of each terminal according to the code word quantity of each terminal and the sequence.
Preferably, in this embodiment, step S103 specifically includes:
if the current terminal is a first terminal, determining DMRS pilot scrambling configuration information and an antenna port number of the current terminal according to the code number of the current terminal;
and if the current terminal is not the first terminal, determining the DMRS pilot scrambling configuration information and the antenna port number of the current terminal according to the code number of the current terminal, the code number of the last terminal, the DMRS pilot scrambling configuration information and the antenna port number.
In this embodiment, the number of codewords of the terminal is sent to the apparatus/device by the terminal. And if the current terminal is the first terminal, the device/equipment inquires the association relationship table according to the code number of the current terminal to obtain the DMRS pilot scrambling code configuration information and the antenna port number of the first terminal. For example: if the number of the code words of the first terminal is '2', the DMRS pilot scrambling configuration information of the first terminal is '0', and the number of the antenna port is '7-8'; and if the number of the code words of the first terminal is 1, the number of the antenna port is 7, and 0 of the DMRS pilot scrambling configuration information of the first terminal is 0.
In this embodiment, if the current terminal is a non-first terminal, the DMRS pilot scrambling configuration information and the antenna port number of the current terminal are determined according to the number of codewords of the current terminal, the number of codewords of the last terminal, the DMRS pilot scrambling configuration information, and the antenna port number, so that DMRSs of adjacent terminals are orthogonal.
Wherein, according to the number of the code words of the current terminal and the number of the code words of the previous terminal, the DMRS pilot scrambling configuration information and the antenna port number of the current terminal include:
if the number of the code words of the current terminal and the previous terminal is 1, the configuration information of the DMRS pilot scrambling codes of the current terminal and the previous terminal is the same, and the current terminal and the previous terminal are distinguished by antenna port numbers;
if the number of the code words of the previous terminal of the current terminal is 2 or the number of the code words of the current terminal is different from that of the previous terminal, the configuration information of the DMRS pilot scrambling codes of the current terminal and the previous terminal is different, and the current terminal and the previous terminal are distinguished through the configuration information of the DMRS pilot scrambling codes.
And step S104, determining the downlink control information related field value of each terminal according to the DMRS pilot scrambling code configuration information, the antenna port number and the code word data of each terminal, and sending the related field value to each terminal.
Preferably, in this embodiment, step S104 specifically includes:
and determining the relevant field value of the downlink control information of each terminal in a table look-up mode according to the DMRS pilot scrambling code configuration information, the antenna port number and the code word data of each terminal, and sending the relevant field value to each terminal.
In this embodiment, an association table of DMRS pilot scrambling code configuration information, an antenna port number, a number of codewords of a terminal and a field value related to downlink control information of the terminal is stored in the apparatus/device in advance, as shown in table 1 below.
Watch 1
In this embodiment, after acquiring DMRS pilot scrambling code configuration information, antenna port number, and code number of each terminal in the null packet, the device/apparatus may obtain a value of a downlink control information related field of each terminal according to a table lookup of the information, and then issue the value of the related field to each terminal, and after receiving the value of the related field, each terminal may demodulate the received downlink information with the value of the related field to obtain demodulated downlink data.
As can be seen from the above, in the method for allocating DMRS pilot scrambling code configuration information according to this embodiment, each terminal is first sequenced according to the direction of arrival of each terminal in the null packet, then the number of codewords of each terminal is obtained, and DMRS pilot scrambling code configuration information and the antenna port number of each terminal are sequentially determined according to the number of codewords of each terminal and the sequencing, so that DMRSs of terminals in adjacent beams in the null packet can be orthogonal, interference between terminals is reduced, and demodulation performance of the terminals is improved.
Example two
Fig. 2 is a schematic diagram of an implementation flow of a DMRS pilot scrambling code configuration information allocation method according to a second embodiment of the present invention, where an execution subject of the method is a DMRS pilot scrambling code configuration device/apparatus deployed on a base station side. Referring to fig. 2, the method for allocating DMRS pilot scrambling code configuration information provided in this embodiment includes:
step S201, selecting A, B, C, D four terminals with no intersection of the activated beams as null packets, and carrying out space division multiplexing on the same time-frequency resources.
Step S202, according to the angle range of the direction of arrival of each terminal in the null packet, A, B, C, D four terminals are sorted in ascending order.
Wherein, A, B, C, D the angle range of arrival direction of the four terminals is [ -10, 10], [ -40, 10], [5, 20], [ -50, 35 ]. Then the order sorted in ascending order is D, B, A, C.
Step S203, acquiring A, B, C, D the code number of the four terminals, and determining N of the four terminals in sequence according to the code number and the sequencing order of the four terminalsSCIDAnd an antenna port number.
Wherein, the terminal D is the first terminal, the number of the code word is 2, the number of the antenna port is directly determined to be 7 and 8, NSCIDIs 0. Terminal B has a number of codewords of 2, antenna port numbers of 7 and 8, NSCIDDistinguished from the previous terminal by 1. The number of code words of terminal A is 1, and the terminal A and the previous terminal pass through NSCIDDistinguished by the number of antenna port being 7, NSCIDIs 0. The number of C code of the terminal is 1, and the terminal is distinguished from the previous terminal by the number of antenna port, the number of antenna port is 8, NSCIDIs 0.
Step S204, according to N of A, B, C, D four terminalsSCIDAnd determining A, B, C, D the downlink control information related field values of the four terminals by the antenna port number and the code word data, and sending the related field values to A, B, C, D the four terminals.
In the present embodiment, N is based on four terminalsSCIDThe antenna port number and the code word data look-up table 1 can obtain the values of the fields related to the downlink control information of the four terminals: terminal D is 0, terminal B is 1, terminal a is 0, and terminal C is 2. After the relevant field values of the downlink control information of the four terminals are obtained, the downlink control information is respectively sent to the corresponding terminals, so that the terminals can demodulate the received downlink data according to the relevant field values after receiving the relevant field values.
Similarly, in the method for allocating DMRS pilot scrambling code configuration information provided in this embodiment, each terminal is first sequenced according to the direction of arrival of each terminal in the null packet, then the number of codewords of each terminal is obtained, and DMRS pilot scrambling code configuration information and the antenna port number of each terminal are sequentially determined according to the number of codewords of each terminal and the sequencing, so that DMRSs of terminals in adjacent beams in the null packet can be orthogonal, interference between terminals is reduced, and demodulation performance of the terminals is improved.
EXAMPLE III
Fig. 3 is a schematic diagram of an implementation flow of a DMRS pilot scrambling code configuration information allocation method according to a third embodiment of the present invention, where an execution subject of the method is a DMRS pilot scrambling code configuration device/apparatus deployed on a base station side. Referring to fig. 3, the method for allocating DMRS pilot scrambling code configuration information provided in this embodiment includes:
step S301, selecting A, B two terminals with no intersection of the activated beams as null packets, and performing space division multiplexing on the same time-frequency resources.
Step S302, according to the angle range of the direction of arrival of each terminal in the null packet, A, B two terminals are sorted in a descending order.
Wherein, the angular ranges of the directions of arrival of the two terminals of A, B are [10, 20], [ -40, 0], respectively. Then the order sorted in descending order is A, B.
Step S303, acquiring A, B the number of code words of two terminals, and determining N of the two terminals in sequence according to the number of code words and the sequence order of the two terminalsSCIDAnd an antenna port number.
Wherein, the terminal A is the first terminal, the number of the code word is 2, the number of the antenna port is directly determined to be 7 and 8, NSCIDIs 0. The number of code words of terminal B is 1, and the terminal B passes through N with the previous terminalSCIDDistinguished by the number of antenna port being 7, NSCIDIs 1.
Step S304, according to N of A, B two terminalsSCIDAnd determining A, B the values of the related fields of the downlink control information of the two terminals by the antenna port number and the code word data, and sending the related fields to A, B the two terminals.
In the present embodiment, N according to two terminalsSCIDThe antenna port number and codeword data look-up table 1 can obtain the values of the fields related to the downlink control information of the two terminals: terminal a is 0 and terminal B is 1. After the relevant field values of the downlink control information of the two terminals are obtained, the downlink control information is respectively sent to the corresponding terminals, so that the terminals can demodulate the received downlink data according to the relevant field values after receiving the relevant field values.
Similarly, in the method for allocating DMRS pilot scrambling code configuration information provided in this embodiment, each terminal is first sequenced according to the direction of arrival of each terminal in the null packet, then the number of codewords of each terminal is obtained, and DMRS pilot scrambling code configuration information and the antenna port number of each terminal are sequentially determined according to the number of codewords of each terminal and the sequencing, so that DMRSs of terminals in adjacent beams in the null packet can be orthogonal, interference between terminals is reduced, and demodulation performance of the terminals is improved.
Example four
Fig. 4 is a schematic flow chart illustrating an implementation process of the DMRS pilot scrambling code configuration information allocation method according to the fourth embodiment of the present invention, where an implementation subject of the method is a DMRS pilot scrambling code configuration device/apparatus deployed on a base station side. Referring to fig. 4, the method for allocating DMRS pilot scrambling code configuration information provided in this embodiment includes:
step S401, selecting A, B, C three terminals with no intersection of the activated beams as null packets, and performing space division multiplexing on the same time-frequency resources.
Step S402, according to the angle range of the arrival direction of each terminal in the null packet, A, B, C three terminals are sorted in an ascending manner.
Wherein, A, B, C the angle range of arrival direction of three terminals is [ -10, 0], [ -40, -20], [20, 30] respectively. Then the order is B, A, C in ascending order.
Step S403, acquiring A, B, C the number of codewords of three terminals, and determining N of three terminals in turn according to A, B, C the number of codewords and the sort order of the three terminalsSCIDAnd an antenna port number.
Wherein, the terminal B is the first terminal, the number of the code words is 1, the number of the antenna port is directly determined to be 7, NSCIDIs 0. The number of code words of terminal A is 2, and the terminal A passes N with the previous terminalSCIDDistinguished by antenna port numbers of 7 and 8, NSCIDIs 1. The number of code words of terminal C is 1, and the terminal C passes N with the previous terminalSCIDDistinguished by the number of antenna port being 7, NSCIDIs 0.
Step S404, according to N of A, B, C three terminalsSCIDAnd determining A, B, C the values of the related fields of the downlink control information of the three terminals by the antenna port number and the code word data, and sending the related fields to A, B, C the three terminals.
In this embodiment, N according to A, B, C three terminalsSCIDThe antenna port number and the code word data lookup table 1 can obtain A, B, C values of downlink control information related fields of three terminals: terminal B is 0, terminal a is 1, and terminal C is 0. After the relevant field values of the downlink control information of the three terminals are obtained, the downlink control information is respectively sent to the corresponding terminals, so that the terminals can demodulate the received downlink data according to the relevant field values after receiving the relevant field values.
Similarly, in the method for allocating DMRS pilot scrambling code configuration information provided in this embodiment, each terminal is first sequenced according to the direction of arrival of each terminal in the null packet, then the number of codewords of each terminal is obtained, and DMRS pilot scrambling code configuration information and the antenna port number of each terminal are sequentially determined according to the number of codewords of each terminal and the sequencing, so that DMRSs of terminals in adjacent beams in the null packet can be orthogonal, interference between terminals is reduced, and demodulation performance of the terminals is improved.
EXAMPLE five
Fig. 5 is a schematic structural diagram of an apparatus for allocating DMRS pilot scrambling code configuration information according to a fifth embodiment of the present invention. Only the portions related to the present embodiment are shown for convenience of explanation.
Referring to fig. 5, the DMRS pilot scrambling code configuration information allocating apparatus 5 provided in this embodiment includes:
a null packet obtaining unit 51 configured to obtain null packets that spatially multiplex the same time-frequency resources;
a sorting unit 52, configured to sort the terminals according to the directions of arrival of the terminals in the null packet;
an information configuration unit 53, configured to obtain the number of code words of each terminal, and sequentially determine DMRS pilot scrambling code configuration information and antenna port numbers of each terminal according to the number of code words of each terminal and the sequence;
and a field value issuing unit 54, configured to determine a field value related to downlink control information of each terminal according to the DMRS pilot scrambling code configuration information, the antenna port number, and the codeword data of each terminal, and issue the related field value to each terminal.
It should be noted that the DMRS pilot scrambling code configuration information allocation apparatus provided in this embodiment and the DMRS pilot scrambling code configuration information allocation method in the first to fourth embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments, and technical features in the method embodiments are applicable in this embodiment, and are not described herein again.
Therefore, it can be seen that the DMRS pilot scrambling code configuration information allocation apparatus provided in this embodiment can also orthogonalize DMRSs of terminals with adjacent beams in an null packet, reduce interference between the terminals, and improve demodulation performance of the terminals.
EXAMPLE six
Fig. 6 is a schematic structural diagram of DMRS pilot scrambling code configuration information allocation equipment according to a sixth embodiment of the present invention. Only the portions related to the present embodiment are shown for convenience of explanation.
Referring to fig. 6, the DMRS pilot scrambling code configuration information allocating device 6 provided in this embodiment includes a memory 61, a processor 62, and a computer program 63 stored in the memory 61 and executable on the processor 62, where when the computer program 63 is executed by the processor 62, the steps of the DMRS pilot scrambling code configuration information allocating method are implemented.
Those skilled in the art will appreciate that fig. 6 is only an example of the DMRS pilot scrambling configuration information allocation device, and does not constitute a limitation to the DMRS pilot scrambling configuration information allocation device, and in practical applications, the DMRS pilot scrambling configuration information allocation device may include more or less components than those shown in the drawings, or combine some components, or different components, for example, the DMRS pilot scrambling configuration information allocation device may further include an input-output device, a network access device, a bus, and the like.
It should be noted that the DMRS pilot scrambling code configuration information allocation device provided in this embodiment and the DMRS pilot scrambling code configuration information allocation method in the first to fourth embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments, and technical features in the method embodiments are applicable in this embodiment, and are not described herein again.
EXAMPLE seven
The storage medium provided by the embodiment of the invention stores a computer program, and when the computer program is executed by a processor, the steps of the DMRS pilot scrambling code configuration information distribution method are realized.
The storage medium of the embodiment of the present invention and the method of the first to fourth embodiments belong to the same concept, and specific implementation processes thereof are described in detail in the corresponding method embodiments, and technical features in the method embodiments are correspondingly applicable in the computer-readable storage medium embodiment, which is not described herein again.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.
In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present invention are intended to be within the scope of the claims.
Claims (9)
1. A method for allocating DMRS pilot scrambling code configuration information is characterized in that the method comprises the following steps:
acquiring space packets of space division multiplexing same time-frequency resources;
sequencing each terminal according to the arrival direction of each terminal in the null packet;
acquiring the code word quantity of each terminal, and sequentially determining the DMRS pilot scrambling code configuration information and the antenna port number of each terminal according to the code word quantity and the sequence of each terminal;
determining the relevant field value of the downlink control information of each terminal according to the DMRS pilot scrambling code configuration information, the antenna port number and the code word data of each terminal, and sending the relevant field value to each terminal;
wherein the sorting the terminals according to the directions of arrival of the terminals in the null packet comprises:
judging whether the angle range of the direction of arrival of each terminal is stored;
if the angle ranges of the wave directions of the terminals are stored, sorting the terminals in a descending or ascending manner according to the angle ranges of the wave directions of the terminals;
and if the angle range of the direction of arrival of each terminal is not stored, sorting the terminals in a descending or ascending manner according to the horizontal beam index or the vertical beam index.
2. The method for allocating DMRS pilot scrambling code configuration information according to claim 1, wherein said sequentially determining DMRS pilot scrambling code configuration information and antenna port numbers of each terminal according to the number of codewords of the terminal and the order comprises:
if the current terminal is a first terminal, determining DMRS pilot scrambling configuration information and an antenna port number of the current terminal according to the code number of the current terminal;
and if the current terminal is not the first terminal, determining the DMRS pilot scrambling configuration information and the antenna port number of the current terminal according to the code number of the current terminal, the code number of the last terminal, the DMRS pilot scrambling configuration information and the antenna port number.
3. The method for allocating DMRS pilot scrambling configuration information according to claim 2, wherein the determining DMRS pilot scrambling configuration information and antenna port number of the current terminal according to the number of codewords of the current terminal and the number of codewords of the previous terminal, the DMRS pilot scrambling configuration information, and the antenna port number comprises:
if the number of the code words of the current terminal and the previous terminal is 1, the configuration information of the DMRS pilot scrambling codes of the current terminal and the previous terminal is the same, and the current terminal and the previous terminal are distinguished by antenna port numbers;
if the number of the code words of the previous terminal of the current terminal is 2 or the number of the code words of the current terminal is different from that of the previous terminal, the configuration information of the DMRS pilot scrambling codes of the current terminal and the previous terminal is different, and the current terminal and the previous terminal are distinguished through the configuration information of the DMRS pilot scrambling codes.
4. The method for allocating DMRS pilot scrambling code configuration information as claimed in claim 1, wherein said obtaining the space-division packets space-division multiplexing the same time-frequency resource comprises:
and determining the space grouping of the space division multiplexing same time-frequency resources according to the activated wave beam of the terminal.
5. The method for allocating DMRS pilot scrambling code configuration information as claimed in claim 4, wherein said determining the space-division packets space-division multiplexing the same time-frequency resource according to the active beam of the terminal comprises:
and judging the activated beams of the terminal, forming null packets for the terminals without intersection of the activated beams, and spatially multiplexing the same time-frequency resources.
6. The method for allocating DMRS pilot scrambling code configuration information according to claim 1, wherein the determining a downlink control information related field value of each terminal according to the DMRS pilot scrambling code configuration information, an antenna port number, and codeword data of each terminal, and sending the related field value to each terminal includes:
and determining the relevant field value of the downlink control information of each terminal in a table look-up mode according to the DMRS pilot scrambling code configuration information, the antenna port number and the code word data of each terminal, and sending the relevant field value to each terminal.
7. An apparatus for allocating DMRS pilot scrambling configuration information, comprising:
the space packet acquisition unit is used for acquiring space packets of space division multiplexing same time-frequency resources;
a sorting unit, configured to sort the terminals according to the directions of arrival of the terminals in the null packet;
an information configuration unit, configured to obtain the number of code words of each terminal, and sequentially determine DMRS pilot scrambling code configuration information and antenna port numbers of each terminal according to the number of code words of each terminal and the ordering;
a field value issuing unit, configured to determine a field value related to downlink control information of each terminal according to the DMRS pilot scrambling code configuration information, the antenna port number, and the codeword data of each terminal, and issue the related field value to each terminal;
wherein the sorting the terminals according to the directions of arrival of the terminals in the null packet comprises:
judging whether the angle range of the direction of arrival of each terminal is stored;
if the angle ranges of the wave directions of the terminals are stored, sorting the terminals in a descending or ascending manner according to the angle ranges of the wave directions of the terminals;
and if the angle range of the direction of arrival of each terminal is not stored, sorting the terminals in a descending or ascending manner according to the horizontal beam index or the vertical beam index.
8. A DMRS pilot scrambling configuration information allocation apparatus, comprising a memory, a processor and a computer program stored on said memory and being executable on said processor, said computer program, when executed by said processor, implementing the steps of the DMRS pilot scrambling configuration information allocation method as claimed in any one of claims 1 to 6.
9. A storage medium, characterized in that the storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the DMRS pilot scrambling code configuration information allocation method as claimed in any one of claims 1 to 6.
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