CN114173422B - Uplink data processing method, access network equipment and storage medium - Google Patents

Uplink data processing method, access network equipment and storage medium Download PDF

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CN114173422B
CN114173422B CN202111489267.8A CN202111489267A CN114173422B CN 114173422 B CN114173422 B CN 114173422B CN 202111489267 A CN202111489267 A CN 202111489267A CN 114173422 B CN114173422 B CN 114173422B
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ports
port
uplink transmission
streams
matrix
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CN114173422A (en
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张晶
龚凡
简春兵
余昕
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Shenzhen Lingchuang Xingtong Technology Co ltd
Kingsignal Technology Co Ltd
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Shenzhen Lingchuang Xingtong Technology Co ltd
Kingsignal Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention discloses an uplink data processing method, access network equipment and a storage medium. The method comprises the following steps: acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports; determining a corresponding relation between the ports and the air distribution streams according to the number of the ports and the number of the uplink transmission air distribution streams, wherein each port corresponds to the air distribution stream, and the number of the air distribution streams corresponding to at least one port is more than one; and sending the corresponding relation between the port and the space division stream to the terminal equipment. By the scheme of the invention, the number of users accessed by the access network equipment and the throughput of the uplink can be improved.

Description

Uplink data processing method, access network equipment and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an uplink data processing method, an access network device, and a storage medium.
Background
With the continuous development of the 5G technology, more and more data needs to be transmitted, and the number of antenna ports is limited, so that 12-stream data transmission is supported at most at the same time at present, but the same antenna port can carry multiple streams of data, and therefore, the number of uplink space division users is at a premium.
The number of uplink space division users can be improved by two methods, one is a semi-blind channel estimation algorithm based on eigenvalue decomposition and singular value decomposition, and the other is a method of pilot frequency power control, pilot frequency coordination distribution and the like. The former can effectively estimate the channel response of each data stream under the condition that pilot signals interfere with each other, but needs to calculate the high-order statistic of the received signals, needs long enough data to improve the channel identification degree, and has complex algorithm and large calculation amount; the latter can reallocate the pilots based on a certain allocation strategy to eliminate the interference between the pilots, but a new transmission protocol needs to be used, and the pilot training overhead is high, which is not suitable for a mature civil wireless communication system.
Disclosure of Invention
The invention provides an uplink data processing method, access network equipment and a storage medium, which improve the number of users accessed to a system and the throughput of an uplink.
In a first aspect, an embodiment of the present invention provides an uplink data processing method, where the method includes:
acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports;
determining a corresponding relation between ports and an air distribution stream according to the number of the ports and the number of the uplink transmission air distribution streams, wherein each port corresponds to the air distribution stream, and the number of the air distribution streams corresponding to at least one port is more than one;
and sending the corresponding relation between the port and the space division stream to the terminal equipment.
Optionally, if the number of ports is M and the number of uplink transmission null streams is N, the corresponding relationship between the ports and the null streams is: each of b ports in the M ports corresponds to a +1 null streams, each of M-b ports in the M ports corresponds to a null stream, and a and b are respectively integer quotient and remainder of N/M.
Optionally, determining a corresponding relationship between the port and the spatial division stream includes: determining the number N of the uplink transmission space division streams
Figure BDA0003398529580000021
A first selection combination; respectively calculating the channel matrix condition number of each first selection combination, and selecting b first selection combinations as the air-split streams corresponding to each of b ports according to the channel matrix condition number of each first selection combination; determining
Figure BDA0003398529580000022
A second selection combination; and respectively calculating the channel matrix condition number of each second selection combination, and selecting M-b second selection combinations as the air stream corresponding to each port of the M-b ports according to the channel matrix condition number of each second selection combination.
Optionally, after sending the corresponding relationship between the port and the null stream to the terminal device, the method further includes: and acquiring uplink transmission data sent by the terminal equipment.
Optionally, the obtaining uplink transmission data sent by the terminal device includes: receiving M pilot signals sent by terminal equipment, wherein one pilot signal corresponds to one port; calculating a channel estimation result of each port according to the pilot signals; generating a pilot channel response matrix according to the channel estimation result of each port; and analyzing to obtain uplink transmission data according to the pilot channel response matrix.
Optionally, for M pilot signals
Figure BDA0003398529580000023
Any pilot signal Y in i DMRS 1, 2.. M, based on the pilot signal Y i DMRS Calculating the channel estimation result of port i
Figure BDA0003398529580000024
The method comprises the following steps: from the pilot signal Y i DMRS Acquiring an initial channel matrix and a noise matrix, wherein the initial channel matrix comprises SRS channel responses of space division streams corresponding to a port i, and the noise matrix comprises noise values of the space division streams corresponding to the port i; performing equalization calculation according to the initial channel matrix and the noise matrix to obtain an equalization result; if the deviation of the equalization result is less than or equal to a preset threshold value, taking the initial channel matrix as the channel estimation result of the port i
Figure BDA0003398529580000032
The deviation of the equalization result is the difference between each element in the equalization result and 1; if the deviation of the equalization result is larger than the preset threshold, updating the initial channel matrix according to the deviation of the equalization result, and returning to the executionAnd performing equalization calculation on the rows according to the initial channel matrix and the noise matrix to obtain an equalization result until the deviation of the equalization result is less than or equal to a preset threshold value.
Optionally, updating the initial channel matrix according to the equalization result deviation includes: determining the maximum element in the deviation of the equalization result; and updating the element in the initial channel matrix corresponding to the maximum element in the deviation of the equalization result.
Optionally, a pilot channel response matrix
Figure BDA0003398529580000031
Analyzing and obtaining uplink transmission data according to the pilot channel response matrix, wherein the analyzing and obtaining comprises the following steps: according to a pilot channel response matrix H DATA And balancing the symbols, and analyzing to obtain uplink transmission data.
In a second aspect, an embodiment of the present invention further provides an uplink data processing apparatus, where the apparatus includes:
the information acquisition module is used for acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports;
the information processing module is used for determining the corresponding relation between the ports and the null stream according to the number of the ports and the number of the uplink transmission null streams, wherein each port corresponds to the null stream, and the number of the null streams corresponding to at least one port is more than one;
and the information sending module is used for sending the corresponding relation between the port and the space division stream to the terminal equipment.
In a third aspect, an embodiment of the present invention further provides an access network device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor is configured to implement the uplink data processing method according to any one of the embodiments of the present invention when executing the computer program.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the uplink data processing method according to any one of the embodiments of the present invention.
The invention obtains the port number and the uplink transmission space division flow number, wherein, the port number is the maximum port number of the uplink transmission supported by the access network equipment, and the uplink transmission space division flow number is larger than the port number; determining a corresponding relation between the ports and the air distribution streams according to the number of the ports and the number of the uplink transmission air distribution streams, wherein each port corresponds to the air distribution stream, and the number of the air distribution streams corresponding to at least one port is more than one; and sending the corresponding relation between the port and the space division stream to the terminal equipment. The phenomenon that a new sending protocol needs to be used or the number of uplink space division users needs to be increased through a complex and large-computation-amount algorithm in the prior art is solved, and the number of the access users of the system and the throughput of an uplink can be increased through lower computation complexity.
Drawings
Fig. 1 is a flowchart illustrating an uplink data processing method according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating an uplink data processing method according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an uplink data processing apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an access network device in a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
Example one
Fig. 1 is a schematic flowchart of an uplink data processing method according to an embodiment of the present invention, where this embodiment is applicable to a situation where the number of users accessing a system and the throughput of an uplink are improved, and the method may be executed by an uplink data processing apparatus in the embodiment of the present invention, and the apparatus may be implemented in a software and/or hardware manner. In a specific embodiment, the apparatus may be integrated in an access network device, and the access network device may be, for example, a base station, and the following embodiments will be described by taking as an example that the apparatus is integrated in an access network device, as can be seen from fig. 1, the method may specifically include the following steps:
s101, acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports.
Wherein the number of spatial streams is the number of data streams transmitted in space; the antenna port refers to a logical port for transmitting information, and has no defined correspondence with a physical antenna.
Specifically, the antenna port is a concept generated by the reference signal, so that the antenna port and the reference signal have a corresponding relationship, and the relationship between the reference signal and the antenna port number is shown in table 1.
TABLE 1
Reference signal Antenna port number
PDSCH DMRS 1000-1011
PDCCH DMRS 2000
PBCH DMRS 4000
CSI RS 3000-3031
PUSCH DMRS 1-11
PUCCH DMRS 2000
PTRS Same as corresponding PDSCH/PUSCH
SRS 1000-1003
As can be seen from table 1, there are 12 antenna ports of an Uplink Shared CHannel (PUSCH) and a Downlink Shared CHannel (PDSCH), where the antenna ports may be defined by Reference signals for the antennas, that is, the used Reference signals are names of a certain type of logical ports, and specifically, the maximum port number supported by the Uplink traffic CHannel may be obtained through DeModulation Reference signal (DMRS) configuration of the access network device.
S102, determining the corresponding relation between the ports and the null streams according to the number of the ports and the number of the uplink transmission null streams, wherein each port corresponds to the null streams, and the number of the null streams corresponding to at least one port is more than one.
Specifically, if each user in the system supports 2 space division streams at maximum uplink, each space division stream corresponds to one antenna port, under an ideal channel condition, if the antenna ports are not multiplexed, the maximum number of space division users at the time supports 12 space division streams for simultaneous transmission, which is maximum 12 (i.e., 1 space division stream for each user), and if the antenna ports are multiplexed, the limitation is not imposed, and one port may correspond to multiple space division streams, so that the number of uplink space division streams is increased.
For example, when the number of the uplink transmission null streams is greater than the number of the ports, one port may correspond to a plurality of null streams, and the corresponding relationship between the port and the null streams is determined according to the number of the ports and the number of the uplink transmission null streams.
Optionally, when the number of ports is greater than or equal to the number of uplink transmission null streams, the terminal device sends uplink transmission data according to the port specified by the access network device, and the access network device can complete data transmission by normal demodulation and decoding.
Optionally, if the number of the ports is M and the number of the uplink transmission null streams is N, the corresponding relationship between the ports and the null streams is: each of b ports in the M ports corresponds to a +1 null streams, each of M-b ports in the M ports corresponds to a null stream, and a and b are respectively integer quotient and remainder of N/M.
For example, if the number M of ports is 12 and the number N of uplink null streams is 55, integer quotient a and remainder b of the number M of ports and the number N of null streams are 4 and 7, respectively, so that 7 ports of the 12 ports correspond to 5 null streams each, and 5 ports correspond to 4 null streams each, that is, the corresponding relationship between the ports and the null streams can be determined.
And S103, sending the corresponding relation between the port and the space division stream to the terminal equipment.
Specifically, after determining the corresponding relationship between the ports and the spatial division streams, the access network device sends the corresponding relationship to the terminal device, so that the terminal device can send corresponding uplink transmission data to each port in the access network device.
According to the technical scheme of the embodiment, the number of ports and the number of uplink transmission space division streams are obtained, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports; determining a corresponding relation between ports and an air distribution stream according to the number of the ports and the number of the uplink transmission air distribution streams, wherein each port corresponds to the air distribution stream, and the number of the air distribution streams corresponding to at least one port is more than one; and sending the corresponding relation between the port and the space division stream to the terminal equipment. The phenomenon that a new sending protocol needs to be used or the number of uplink space division users needs to be increased through a complex and large-computation-amount algorithm in the prior art is solved, and the number of the access users of the system and the throughput of an uplink can be increased through lower computation complexity.
Example two
Fig. 2 is a flowchart illustrating an uplink data processing method according to a second embodiment of the present invention, where this embodiment is applicable to a situation where the number of users accessing a system and the throughput of an uplink are improved, and the method may be executed by an uplink data processing apparatus according to the second embodiment of the present invention, and the apparatus may be implemented in a software and/or hardware manner. In a specific embodiment, the apparatus may be integrated in an access network device, and the access network device may be, for example, a base station, and the following embodiments will be described by taking the example that the apparatus is integrated in the access network device, and as can be seen from fig. 2, the method may specifically include the following steps
S201, acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports.
In this embodiment, the number of spatial streams is the number of data streams transmitted in space; the antenna port refers to a logical port for transmitting information, and specifically, the antenna port is a concept generated by a reference signal, so that the antenna port and the reference signal have a corresponding relationship, which is detailed in table 1, and there are 12 antenna ports of an Uplink Shared CHannel (PUSCH) and a Downlink Shared CHannel (PDSCH).
S202, determining the corresponding relation between the ports and the null streams according to the number of the ports and the number of the uplink transmission null streams, wherein each port corresponds to the null streams, and the number of the null streams corresponding to at least one port is more than one.
In this embodiment, when the number of ports is greater than or equal to the number of uplink transmission null streams, the terminal device sends uplink transmission data according to the port specified by the access network device, and the access network device can complete data transmission by normal demodulation and decoding; when the number of the uplink transmission space division streams is larger than that of the ports, one port can correspond to a plurality of space division streams, and the corresponding relation between the ports and the space division streams is determined according to the number of the ports and the number of the uplink transmission space division streams. If each user in the system supports 2 space division streams at maximum uplink, each space division stream corresponds to one antenna port, under an ideal channel condition, if the antenna ports are not multiplexed, the maximum uplink supports 12 space division streams for simultaneous transmission, the maximum number of space division users at this time is 12 (namely 1 space division stream for each user), if the antenna ports are multiplexed, the limitation is not existed, and one port can correspond to a plurality of space division streams, so that the number of uplink space division streams is increased.
Optionally, determining a corresponding relationship between the port and the spatial division stream includes: determining the number N of the uplink transmission space division streams
Figure BDA0003398529580000081
A first selection combination; respectively calculating the channel matrix condition number of each first selection combination, and selecting b first selection combinations as the air-split streams corresponding to each of b ports according to the channel matrix condition number of each first selection combination; determining
Figure BDA0003398529580000082
A second selection combination; and respectively calculating the channel matrix condition number of each second selection combination, and selecting M-b second selection combinations as the air stream corresponding to each port of M-b ports according to the channel matrix condition number of each second selection combination.
The first selection combination is all combination schemes for selecting a +1 space division streams from the N uplink transmission space division streams to be combined; the second selection combination is all combination schemes for selecting a air separation streams from N-b (a +1) uplink transmission air separation streams to be combined; the condition number of the channel matrix is a standard for measuring the matching degree of the selected combination, and specifically, the smaller the condition number of the channel matrix is, the more matched the selected combination is. Specifically, a +1 spatial streams are selected from the N spatial streams in common
Figure BDA0003398529580000091
And (4) according to the selection result, the corresponding relation between the port and the space division stream can be determined by calculating the condition number of the channel matrix of each selection combination. The channel matrix condition number calculation process is shown in formula (1).
Figure BDA0003398529580000092
In the formula (1), H srs Is a channel matrix formed by the channel responses of the uplink Sounding Reference Signals (SRS) corresponding to the selected a +1 space division streams, sigma max Is the maximum singular value, σ, of the channel matrix min Is the smallest singular value of the channel matrix.
Specifically, if the number of uplink transmission null streams is N, first, the number of uplink transmission null streams N and the number of null streams a +1 are determined
Figure BDA0003398529580000094
And a first selection combination, which respectively calculates the channel matrix condition number of each first selection combination, and according to the channel matrix condition number of each first selection combination, firstly selects a first selection combination with the minimum condition number as a first selection combination A1, then completely eliminates the first selection combination containing the number of the space division streams contained in A1 from the rest first selection combinations, then selects a first selection combination with the minimum condition number as a second first selection combination A2, and continuously repeats the operation until b first selection combinations corresponding to b ports are selected. Secondly, determining the number of the empty stream N-b (a +1) and the number of the empty stream a according to the number of the empty stream N-b of the uplink transmission
Figure BDA0003398529580000093
And the second selection combinations respectively calculate the channel matrix condition number of each second selection combination, firstly select one second selection combination with the minimum condition number as a first second selection combination B1 according to the channel matrix condition number of each second selection combination, then completely remove the second selection combinations containing the number of the space division streams contained in B1 from the rest second selection combinations, then select one second selection combination with the minimum condition number as a second selection combination B2, and continuously repeat the operation until M-B second selection combinations corresponding to M-B ports are selected.
Optionally, according to the number N of uplink transmission null streams, b first selection combinations are determined to be respectively used as null streams corresponding to each of the b ports, and the number N of uplink transmission null streams may be first usedThe number of the space division streams a +1 is determined
Figure BDA0003398529580000103
A first selection combination, which respectively calculates the channel matrix condition number of each first selection combination, and according to the channel matrix condition number of each first selection combination, firstly selects a first selection combination with the least condition number as a first selection combination A1, and then determines the remaining N-a-1 space streams
Figure BDA0003398529580000104
And a first selection combination, which respectively calculates the channel matrix condition number of each first selection combination, and according to the channel matrix condition number of each first selection combination, firstly selects a first selection combination with the least condition number as a first selection combination A2, and repeats the operation until b first selection combinations corresponding to the b ports are selected. Secondly, determining M-b second selection combinations as the air stream corresponding to each of the M-b ports, and determining the number of the uplink transmission air streams according to the number N-b (a +1) of the uplink transmission air streams and the number a of the air streams
Figure BDA0003398529580000101
A second selection combination, which respectively calculates the channel matrix condition number of each second selection combination, and according to the channel matrix condition number of each second selection combination, firstly selects one second selection combination with the least condition number as a first second selection combination B1, and then determines the remaining N-B (a +1) -a space streams
Figure BDA0003398529580000102
And a first selection combination, which respectively calculates the channel matrix condition number of each first selection combination, and according to the channel matrix condition number of each first selection combination, firstly selects a first selection combination with the least condition number as a first selection combination B2, and continuously repeats the operation until M-B second selection combinations corresponding to M-B ports are selected.
And S203, sending the corresponding relation between the ports and the space division streams to the terminal equipment.
In this embodiment, after determining the corresponding relationship between the port and the air stream, the access network device sends the corresponding relationship to the terminal device, so that the terminal device can send corresponding uplink transmission data to the corresponding port in the access network device.
And S204, acquiring uplink transmission data sent by the terminal equipment.
Specifically, after receiving the correspondence between the port sent by the access network device and the air separation stream, the terminal device sends corresponding uplink transmission data to the specified port according to the received information, and the access network device can obtain the uplink transmission data sent by the terminal device in real time.
Optionally, the obtaining uplink transmission data sent by the terminal device includes: receiving M pilot signals sent by terminal equipment, wherein one pilot signal corresponds to one port; calculating a channel estimation result of each port according to the pilot signals; generating a pilot channel response matrix according to the channel estimation result of each port; and analyzing to obtain uplink transmission data according to the pilot channel response matrix.
The pilot channel response matrix carries the attribute information of the uplink transmission data, and the uplink transmission data of the multiplexing antenna port can be correspondingly analyzed according to the pilot channel response matrix.
Specifically, the terminal device sends uplink transmission data according to the configuration of the port and time-frequency resource position designated by the access network device, and the like, after receiving the signal, the access network device firstly processes the pilot frequency symbol, decodes the time-frequency domain Orthogonal Cover Code (OCC) according to the Orthogonal Code corresponding to each port, and separates out the pilot frequency signal of each port
Figure BDA0003398529580000114
The channel estimation result of each port can be calculated according to the pilot signal, the pilot channel response matrix is composed of the channel estimation results of all the ports, the pilot channel response matrix is shown as a formula (2), and the uplink transmission data can be obtained by analyzing the pilot channel response matrix.
Figure BDA0003398529580000111
Optionally, for M pilot signals
Figure BDA0003398529580000115
Any pilot signal Y in i DMRS 1, 2.. M, based on the pilot signal Y i DMRS Calculating the channel estimation result of port i
Figure BDA0003398529580000112
The method comprises the following steps:
step A1: and determining the number ri of the space division streams carried by the port. If ri is 1, the channel response of the data stream of the port
Figure BDA0003398529580000113
If ri is greater than 1, according to the pilot signal Y i DMRS And acquiring an initial channel matrix and a noise matrix, wherein the initial channel matrix comprises the SRS channel response of the null stream corresponding to the port i, and the noise matrix comprises the noise value of the null stream corresponding to the port i.
Specifically, the initial channel matrix is
Figure BDA0003398529580000121
The noise matrix is
Figure BDA0003398529580000122
Step A2: and carrying out equalization calculation according to the initial channel matrix and the noise matrix to obtain an equalization result.
In particular, an initial channel matrix is used
Figure BDA0003398529580000123
And Ni channel estimation for port i
Figure BDA0003398529580000124
Performing equalization calculation, the equalization result is
Figure BDA0003398529580000125
The equalization result X under ideal conditions without considering channel variations and noise i Is an identity matrix.
Step A3: if the deviation of the equalization result is less than or equal to a preset threshold value, taking the initial channel matrix as the channel estimation result of the port i
Figure BDA0003398529580000126
The deviation of the equalization result is the difference between each element in the equalization result and 1; and if the deviation of the equalization result is greater than the preset threshold, updating the initial channel matrix according to the deviation of the equalization result, returning to the step of executing equalization calculation according to the initial channel matrix and the noise matrix to obtain the equalization result until the deviation of the equalization result is less than or equal to the preset threshold.
Wherein the deviation of the equalization result is the equalization result X i Each element in (x) i,1 ,x i,2 ,...,x i,ri Deviation from 1, in particular, deviation of the equalization result
Figure BDA0003398529580000127
Wherein the preset threshold is a standard for measuring the channel estimation result, and the deviation of the equalization result is X i Comparing with a preset threshold xi, if
Figure BDA0003398529580000128
Then will be
Figure BDA0003398529580000129
As the channel response of each data stream in port i
Figure BDA00033985295800001210
If it is
Figure BDA00033985295800001211
Updating the initial channel matrix according to the deviation of the equalization result, and returning to the step of executing equalization calculation according to the initial channel matrix and the noise matrix to obtain the equalization result until the deviation of the equalization result is less than or equal toUntil it equals a preset threshold.
Optionally, updating the initial channel matrix according to the equalization result deviation includes: determining the maximum element in the deviation of the equalization result; and updating the element in the initial channel matrix corresponding to the maximum element in the deviation of the equalization result.
In particular, when
Figure BDA00033985295800001212
Then, find the deviation of the equalization result ^ X i The largest element and the position idx of the element, and updating the channel response of the idx-th stream in the initial channel matrix, as shown in formula (3).
Figure BDA0003398529580000131
Wherein, alpha is a scale factor, the value range is alpha belongs to (0, 1), k is the number of the air-split streams, and the updated initial channel matrix is
Figure BDA0003398529580000132
Optionally, if the number of spatial streams carried by a port is less than or equal to 1, an algorithm is directly used to perform channel estimation on the pilot sequence, so as to obtain a channel estimation result and a pilot channel response matrix of the port.
Optionally, analyzing to obtain uplink transmission data according to the pilot channel response matrix, where the analyzing includes: according to a pilot channel response matrix H DATA And balancing the symbols, and analyzing to obtain uplink transmission data.
Wherein, the equalization is the characteristic opposite to the channel generated by the equalizer of the access network equipment, and is used for counteracting the intersymbol interference caused by the time-varying multipath propagation characteristic of the channel.
Specifically, the pilot channel response matrix is
Figure BDA0003398529580000133
On which the attribute information of the uplink transmission data is carried, according to the pilot channelThe response matrix can correspondingly analyze each uplink transmission data of the multiplexing antenna port.
According to the technical scheme of the embodiment, the number of ports and the number of uplink transmission space division streams are obtained, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports; determining a corresponding relation between ports and an air distribution stream according to the number of the ports and the number of the uplink transmission air distribution streams, wherein each port corresponds to the air distribution stream, and the number of the air distribution streams corresponding to at least one port is more than one; and sending the corresponding relation between the port and the space division stream to the terminal equipment. The phenomenon that the number of uplink space division users needs to be increased by using a new sending protocol or through a complex algorithm with large calculation amount in the prior art is solved, and the number of the access users of the system and the throughput of the uplink can be increased through lower calculation complexity.
EXAMPLE III
The uplink data processing apparatus provided in the third embodiment of the present invention is capable of executing the uplink data processing method provided in any of the embodiments of the present invention, and has functional modules and beneficial effects corresponding to the execution method.
Fig. 3 is a schematic structural diagram of an uplink data processing apparatus according to a third embodiment, as shown in fig. 3, including: an information acquisition module 301, an information processing module 302 and an information transmission module 303.
The information obtaining module 301 is configured to obtain a port number and an uplink transmission spatial division stream number, where the port number is the maximum port number of uplink transmission supported by the access network device, and the uplink transmission spatial division stream number is greater than the port number.
The information processing module 302 is configured to determine a correspondence between ports and null streams according to the number of the ports and the number of the uplink transmission null streams, where each port corresponds to a null stream and the number of the null streams corresponding to at least one port is greater than one.
An information sending module 303, configured to send, to the terminal device, a correspondence between the port and the null stream.
The uplink data processing apparatus provided in this embodiment is configured to implement the uplink data processing method in the foregoing embodiment, and the implementation principle and technical effect of the uplink data processing apparatus provided in this embodiment are similar to those of the foregoing embodiment, and are not described here again.
Optionally, if the number of ports is M and the number of uplink transmission null streams is N, the corresponding relationship between the ports and the null streams is: each of b ports in the M ports corresponds to a +1 null streams, each of M-b ports in the M ports corresponds to a null stream, and a and b are respectively integer quotient and remainder of N/M.
Optionally, the information processing module 302 is specifically configured to determine the number N of null streams for uplink transmission according to the number N of null streams for uplink transmission
Figure BDA0003398529580000141
A first selection combination; respectively calculating the channel matrix condition number of each first selection combination, and selecting b first selection combinations as the air-split streams corresponding to each of b ports according to the channel matrix condition number of each first selection combination; determining
Figure BDA0003398529580000151
A second selection combination; and respectively calculating the channel matrix condition number of each second selection combination, and selecting M-b second selection combinations as the air stream corresponding to each port of M-b ports according to the channel matrix condition number of each second selection combination.
Optionally, the information obtaining module 301 is further configured to obtain uplink transmission data sent by the terminal device.
Optionally, the apparatus further includes a data parsing module, configured to receive M pilot signals sent by the terminal device, where one pilot signal corresponds to one port; calculating a channel estimation result of each port according to the pilot signals; generating a pilot channel response matrix according to the channel estimation result of each port; and analyzing to obtain uplink transmission data according to the pilot channel response matrix.
Optionally, the data parsing module is specifically configured to parse the pilot signal Y according to the pilot signal Y i DMRS Obtaining an initial channel matrix and a noise matrix, wherein the initial channel matrix comprises the SRS channel response and the noise of the space division stream corresponding to the port iThe matrix comprises noise values of the air streams corresponding to the ports i; carrying out equalization calculation according to the initial channel matrix and the noise matrix to obtain an equalization result; if the deviation of the equalization result is less than or equal to a preset threshold value, taking the initial channel matrix as the channel estimation result of the port i
Figure BDA0003398529580000152
The deviation of the equalization result is the difference between each element in the equalization result and 1; and if the deviation of the equalization result is greater than the preset threshold, updating the initial channel matrix according to the deviation of the equalization result, returning to the step of executing equalization calculation according to the initial channel matrix and the noise matrix to obtain the equalization result until the deviation of the equalization result is less than or equal to the preset threshold.
Optionally, the data analysis module is specifically configured to determine a maximum element in the deviation of the equalization result; and updating the element in the initial channel matrix corresponding to the maximum element in the deviation of the equalization result.
Optionally, the data parsing module is specifically configured to respond to the matrix H according to the pilot channel DATA And balancing the symbols, and analyzing to obtain uplink transmission data.
Example four
Fig. 4 is a schematic structural diagram of an access network device in the fourth embodiment of the present invention. Fig. 4 illustrates a block diagram of an exemplary access network device 12 suitable for use in implementing embodiments of the present invention. The access network equipment 12 shown in fig. 4 is only an example and should not impose any limitations on the functionality or scope of use of embodiments of the present invention.
As shown in fig. 4, access network device 12 may take the form of a general purpose computing device. Components of access network device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Access network device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by access network device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Access network device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, and commonly referred to as a "hard drive"). Although not shown in FIG. 4, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.
Access network device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with access network device 12, and/or with any devices (e.g., network card, modem, etc.) that enable access network device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. In the access network device 12 of the present embodiment, the display 24 is not provided as a separate body but is embedded in a mirror surface, and when the display surface of the display 24 is not displayed, the display surface of the display 24 and the mirror surface are visually integrated. Also, access network device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via network adapter 20. As shown in fig. 4, network adapter 20 communicates with the other modules of access network device 12 via bus 18. It should be understood that although not shown in fig. 4, other hardware and/or software modules may be used in conjunction with access network device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit 16 executes various functional applications and data processing by running the program stored in the system memory 28, for example, implementing an uplink data processing method provided by the embodiment of the present invention, the method includes:
acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports;
determining a corresponding relation between ports and an air distribution stream according to the number of the ports and the number of the uplink transmission air distribution streams, wherein each port corresponds to the air distribution stream, and the number of the air distribution streams corresponding to at least one port is more than one;
and sending the corresponding relation between the port and the space division stream to the terminal equipment.
EXAMPLE five
An embodiment five of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements an uplink data processing method according to any embodiment of the present invention, where the method includes:
acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports;
determining a corresponding relation between ports and an air distribution stream according to the number of the ports and the number of the uplink transmission air distribution streams, wherein each port corresponds to the air distribution stream, and the number of the air distribution streams corresponding to at least one port is more than one;
and sending the corresponding relation between the port and the space division stream to the terminal equipment.
Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.

Claims (9)

1. An uplink data processing method, applied to an access network device, includes:
acquiring the number of ports and the number of uplink transmission space division streams, wherein the number of the ports is the maximum number of the uplink transmission ports supported by the access network equipment, and the number of the uplink transmission space division streams is greater than the number of the ports;
determining a corresponding relation between ports and an air distribution stream according to the port number and the uplink transmission air distribution stream number, wherein each port corresponds to the air distribution stream, and the air distribution stream number corresponding to at least one port is more than one;
sending the corresponding relation between the port and the air shunt to terminal equipment;
if the number of the ports is M and the number of the uplink transmission null streams is N, the corresponding relationship between the ports and the null streams is as follows: each of b ports in the M ports corresponds to a +1 null streams, each of M-b ports in the M ports corresponds to a null stream, and a and b are respectively integer quotient and remainder of N/M.
2. The method according to claim 1, wherein the determining the correspondence between the ports and the null flows includes:
determining the number N of the uplink transmission space division streams
Figure DEST_PATH_IMAGE002
A first selection combination;
respectively calculating the channel matrix condition number of each first selection combination, and selecting b first selection combinations as the air stream corresponding to each of b ports according to the channel matrix condition number of each first selection combination;
determining
Figure DEST_PATH_IMAGE004
A second selection combination;
and respectively calculating the channel matrix condition number of each second selection combination, and selecting M-b second selection combinations as the air stream corresponding to each M-b ports according to the channel matrix condition number of each second selection combination.
3. The uplink data processing method according to claim 1, after sending the correspondence between the port and the air stream to the terminal device, further comprising:
and acquiring uplink transmission data sent by the terminal equipment.
4. The uplink data processing method according to claim 3, wherein the obtaining uplink transmission data sent by the terminal device includes:
receiving M pilot signals sent by the terminal equipment, wherein one pilot signal corresponds to one port;
calculating a channel estimation result of each port according to the pilot signal;
generating a pilot channel response matrix according to the channel estimation result of each port;
and analyzing to obtain the uplink transmission data according to the pilot channel response matrix.
5. The uplink data processing method of claim 4, wherein for M pilot signals
Figure DEST_PATH_IMAGE006
Any of the pilot signals in
Figure DEST_PATH_IMAGE008
From pilot signals
Figure DEST_PATH_IMAGE010
Calculating the channel estimation result of port i
Figure DEST_PATH_IMAGE012
The method comprises the following steps:
from pilot signals
Figure DEST_PATH_IMAGE010A
Obtaining an initial channel matrix and a noise matrix, wherein the initial channel matrix comprises SRS channel responses and noise moments of space division signals corresponding to the port iThe array comprises the noise value of the air shunt corresponding to the port i;
carrying out equalization calculation according to the initial channel matrix and the noise matrix to obtain an equalization result;
if the deviation of the equalization result is less than or equal to a preset threshold value, taking the initial channel matrix as the channel estimation result of the port i
Figure DEST_PATH_IMAGE012A
The deviation of the equalization result is the difference between each element in the equalization result and 1;
and if the deviation of the equalization result is greater than a preset threshold, updating the initial channel matrix according to the deviation of the equalization result, and returning to execute the step of performing equalization calculation according to the initial channel matrix and the noise matrix to obtain the equalization result until the deviation of the equalization result is less than or equal to the preset threshold.
6. The uplink data processing method according to claim 5, wherein the updating the initial channel matrix according to the equalization result deviation comprises:
determining a maximum element in the deviation of the equalization result;
and updating the element in the initial channel matrix corresponding to the maximum element in the deviation of the equalization result.
7. The uplink data processing method of any of claims 4-6, wherein the pilot channel response matrix is a matrix of pilot channel responses
Figure DEST_PATH_IMAGE016
Analyzing and obtaining the uplink transmission data according to the pilot channel response matrix, including:
according to the pilot channel response matrix
Figure DEST_PATH_IMAGE018
Equalizing the symbols, and analyzing to obtain the uplink transmission numberAccordingly, the method is simple and convenient.
8. An access network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor being configured to implement the upstream data processing method according to any of claims 1 to 7 when executing the computer program.
9. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the upstream data processing method according to any one of claims 1 to 7.
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