CN107666380A - Method and the base station of down-bound pilot frequency signal are sent in a kind of private network communication system - Google Patents
Method and the base station of down-bound pilot frequency signal are sent in a kind of private network communication system Download PDFInfo
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- CN107666380A CN107666380A CN201610619247.0A CN201610619247A CN107666380A CN 107666380 A CN107666380 A CN 107666380A CN 201610619247 A CN201610619247 A CN 201610619247A CN 107666380 A CN107666380 A CN 107666380A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
Abstract
The present invention, which discloses the method for transmission down-bound pilot frequency signal and base station, method in a kind of private network communication system, to be included：When sending down-bound pilot frequency signal using first port and second port, it is distributed according to default pilot resources first in downlink resource, down-bound pilot frequency signal is modulated in the first downstream signal, the first downstream signal is sent by first port；It is distributed according to default pilot resources second in downlink resource, down-bound pilot frequency signal is modulated in the second downstream signal, the second downstream signal is sent by the second port.Compared to prior art, method and the base station of down-bound pilot frequency signal are sent in private network communication system proposed by the present invention, when making private network communication system using two-port transmitting, an emission port is corresponded to respectively by the way that two kinds of pilot resources to be distributed to (also referred to as pilot tone pattern), two-port pilot frequency sequence can be distinguished, so as to pass through the channel estimation of two-port, the receptivity of raising private network communication system.
Description
Technical field
The present invention relates to communication technical field, and in particular to the side of down-bound pilot frequency signal is sent in a kind of private network communication system
Method and base station.
Background technology
Private network communication (Private network communication) usual bearing multiple service, private network communication system
Discontinuous spectral bandwidth (abbreviation frequency band) is taken, the frequency band of each 25kHz bandwidth is referred to as a subband, and private network communication system is most
Take 480 subbands, the centre frequency of each subband can be described as frequency, be carried out after each subband is sorted from small to large according to frequency more
Numbering is：0,1,2 ..., 479, numbering can be described as absolute frequency.
One a length of 25ms of radio frames of each subband of private network communication system, includes 45 OFDMs
(Orthogonal Frequency Division Multiplexing, OFDM) symbol.Fig. 1 is shown in private network communication system
Radio frames take the structure of resource, and each column represents an OFDM symbol, represent a subcarrier per a line, a subband in Fig. 1
Comprising subcarrier number for 10, Fig. 1 downlink resources take 13 OFDM symbols, this 13 OFDM symbols can also turn into one
Downlink resource block.
Fig. 2 is the schematic diagram of the down-bound pilot frequency signal occupancy resource in one subband of private network communication system, and each OFDM is accorded with
There is a resource unit (Resouce Element, RE) to be taken by pilot signal on number, pilot signal is referred to as with reference to letter
Number (Reference Signal, RS), be by transmitting terminal be supplied to receiving terminal be used for channel estimation or channel detection it is a kind of
Know signal.The position that pilot signal takes resource is (k, l, nPRB), according to cell IDAbsolute frequency index
nPRB, OFDM symbol numbering l determine, specifically：
L=0,1 ..., 12
Wherein, the number for the subcarrier (SubCarrier, SC) that a resource block RB is includedThe number of downlink resource blockBy special
The bandwidth of network communication system determines.
When private network communication system in order to improve descending covering, when being launched using two-port, above-mentioned pilot schemes are not suitable for
Two-port is launched, and is only applicable to single port transmitting.For this reason, it may be necessary to pilot tone is redesigned, to support two-port to launch.
The content of the invention
In view of the above problems, the present invention, which is proposed in a kind of private network communication system for overcome above mentioned problem, sends descending pilot frequency
The method of signal and base station.
In a first aspect, the present invention proposes a kind of method that down-bound pilot frequency signal is sent in private network communication system, including：
When sending down-bound pilot frequency signal using first port and second port, according to default pilot tone money in downlink resource
Source first is distributed, and the down-bound pilot frequency signal is modulated in the first downstream signal, will carry the down-bound pilot frequency signal
The first downstream signal sent by the first port；
When sending down-bound pilot frequency signal using first port and second port, according to default pilot tone money in downlink resource
Source second is distributed, and the down-bound pilot frequency signal is modulated in the second downstream signal, will carry the down-bound pilot frequency signal
The second downstream signal sent by the second port.
Wherein, the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
Second aspect, the present invention provide a kind of base station, including：
First processing units, for when sending down-bound pilot frequency signal using first port and second port, according to descending
Default pilot resources first are distributed in resource, and the down-bound pilot frequency signal is modulated in the first downstream signal, will be carried
The first downstream signal for having the down-bound pilot frequency signal is sent by the first port；
Second processing unit, for when sending down-bound pilot frequency signal using first port and second port, according to descending
Default pilot resources second are distributed in resource, and the down-bound pilot frequency signal is modulated in the second downstream signal, will be carried
The second downstream signal for having the down-bound pilot frequency signal is sent by the second port.
Wherein, the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
The third aspect, the present invention propose a kind of method that down-bound pilot frequency signal is sent in private network communication system, including：
When sending down-bound pilot frequency signal using first port and second port, according to default pilot tone money in downlink resource
Source second is distributed, and the down-bound pilot frequency signal is modulated in the first downstream signal, will carry the down-bound pilot frequency signal
The first downstream signal sent by the first port；
When sending down-bound pilot frequency signal using first port and second port, according to default pilot tone money in downlink resource
Source first is distributed, and the down-bound pilot frequency signal is modulated in the second downstream signal, will carry the down-bound pilot frequency signal
The second downstream signal sent by the second port.
Wherein, the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
Fourth aspect, the present invention propose a kind of base station, including：
3rd processing unit, for when sending down-bound pilot frequency signal using first port and second port, according to descending
Default pilot resources second are distributed in resource, and the down-bound pilot frequency signal is modulated in the first downstream signal, will be carried
The first downstream signal for having the down-bound pilot frequency signal is sent by the first port；
Fourth processing unit, for when sending down-bound pilot frequency signal using first port and second port, according to descending
Default pilot resources first are distributed in resource, and the down-bound pilot frequency signal is modulated in the second downstream signal, will be carried
The second downstream signal for having the down-bound pilot frequency signal is sent by the second port.
Wherein, the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
Compared to prior art, the method and base of down-bound pilot frequency signal are sent in private network communication system proposed by the present invention
Stand, when making private network communication system using two-port transmitting, by the way that two kinds of pilot resources are distributed into (also referred to as pilot tone pattern) respectively
A corresponding emission port, can distinguish two-port pilot frequency sequence, so as to by the channel estimation of two-port, improve private network communication
The receptivity of system.
Brief description of the drawings
Fig. 1 is the structural representation that private network communication system wireless frame takes resource in the prior art；
Fig. 2 is the schematic diagram that the down-bound pilot frequency signal in one subband of private network communication system takes resource in the prior art；
Fig. 3 is the method flow that down-bound pilot frequency signal is sent in a kind of private network communication system provided in an embodiment of the present invention
Figure；
Fig. 4 is the distribution schematic diagram of pilot resources first being related in the embodiment of the present invention；
Fig. 5 is the distribution schematic diagram of pilot resources second being related in the embodiment of the present invention；
Fig. 6 is a kind of architecture of base station schematic diagram provided in an embodiment of the present invention；
Fig. 7 is the method flow that down-bound pilot frequency signal is sent in another private network communication system provided in an embodiment of the present invention
Figure；
Fig. 8 is another architecture of base station schematic diagram provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is explicitly described, it is clear that described embodiment be the present invention
Part of the embodiment, rather than whole embodiments.
It should be noted that herein, " first " to " the 4th " printed words are used merely to make a distinction identical title,
Rather than imply relation or order between these titles.
As shown in figure 3, the method that the present embodiment discloses transmission down-bound pilot frequency signal in a kind of private network communication system, including with
Lower step 301 and 302：
301st, when sending down-bound pilot frequency signal using first port and second port, led according to default in downlink resource
Frequency resource first is distributed, and the down-bound pilot frequency signal is modulated in the first downstream signal, will carry the descending pilot frequency
First downstream signal of signal is sent by the first port；
302nd, when sending down-bound pilot frequency signal using first port and second port, led according to default in downlink resource
Frequency resource second is distributed, and the down-bound pilot frequency signal is modulated in the second downstream signal, will carry the descending pilot frequency
Second downstream signal of signal is sent by the second port.
The method and base of down-bound pilot frequency signal are sent in the private network communication system proposed compared to prior art, the present embodiment
Stand, when making private network communication system using two-port transmitting, by the way that two kinds of pilot resources are distributed into (also referred to as pilot tone pattern) respectively
A corresponding emission port, can distinguish two-port pilot frequency sequence, so as to by the channel estimation of two-port, improve private network communication
The receptivity of system.
In a specific example, as shown in figure 4, the pilot resources first be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
As shown in figure 5, the pilot resources second be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
To sum up, the present embodiment is by private network communication system, by the frame structure, the frequency that consider private network communication system
The factors such as Spectral structure, subband bandwidth, devise the downlink reference signal suitable for the system.Its is simple in construction, reference signal position
Put compact, system traffic demand can be met, while channel estimation can be made, Noise Variance Estimation, the calculation of frequency deviation and timing offset
Method realization is more accurate, and systematic function also brings guarantee.
As shown in fig. 6, the present embodiment discloses a kind of base station, it may include：First processing units 61 and second processing unit 62：
First processing units 61, for when sending down-bound pilot frequency signal using first port and second port, according under
Default pilot resources first are distributed in row resource, and the down-bound pilot frequency signal is modulated in the first downstream signal, will be taken
The first downstream signal with the down-bound pilot frequency signal is sent by the first port；
Second processing unit, for when sending down-bound pilot frequency signal using first port and second port, according to descending
Default pilot resources second are distributed in resource, and the down-bound pilot frequency signal is modulated in the second downstream signal, will be carried
The second downstream signal for having the down-bound pilot frequency signal is sent by the second port.
In a specific example, as shown in figure 4, the pilot resources first be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
As shown in figure 5, the pilot resources second be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
As shown in fig. 7, the present embodiment discloses a kind of method that down-bound pilot frequency signal is sent in private network communication system, it may include
Step 701 and 702：
701st, when sending down-bound pilot frequency signal using first port and second port, led according to default in downlink resource
Frequency resource second is distributed, and the down-bound pilot frequency signal is modulated in the first downstream signal, will carry the descending pilot frequency
First downstream signal of signal is sent by the first port；
702nd, when sending down-bound pilot frequency signal using first port and second port, led according to default in downlink resource
Frequency resource first is distributed, and the down-bound pilot frequency signal is modulated in the second downstream signal, will carry the descending pilot frequency
Second downstream signal of signal is sent by the second port.
In a specific example, as shown in figure 4, the pilot resources first be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
As shown in figure 5, the pilot resources second be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
As shown in figure 8, a kind of base station, including：3rd processing unit 81 and fourth processing unit 82：
3rd processing unit 81, for when sending down-bound pilot frequency signal using first port and second port, according under
Default pilot resources second are distributed in row resource, and the down-bound pilot frequency signal is modulated in the first downstream signal, will be taken
The first downstream signal with the down-bound pilot frequency signal is sent by the first port；
Fourth processing unit 82, for when sending down-bound pilot frequency signal using first port and second port, according under
Default pilot resources first are distributed in row resource, and the down-bound pilot frequency signal is modulated in the second downstream signal, will be taken
The second downstream signal with the down-bound pilot frequency signal is sent by the second port.
In a specific example, as shown in figure 4, the pilot resources first be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
As shown in figure 5, the pilot resources second be distributed it is as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
It will be understood by those skilled in the art that each unit in embodiment can be combined into a unit, and in addition
Multiple subelements can be divided into.Except at least some in such feature and/or process or unit are to arrange mutually
Reprimand part, any combinations can be used to all features disclosed in this specification and such disclosed any method or set
Standby all processes or unit are combined.Unless expressly stated otherwise, each feature disclosed in this specification can be by carrying
Replaced for the alternative features of identical, equivalent or similar purpose.
It will be appreciated by those of skill in the art that although some embodiments described herein include being wrapped in other embodiments
The some features rather than further feature included, but the combination of the feature of different embodiments mean in the scope of the present invention it
It is interior and form different embodiments.
It will be understood by those skilled in the art that each unit in embodiment can be realized with hardware, or with one or
The software module run on the multiple processors of person is realized, or is realized with combinations thereof.Those skilled in the art should manage
Solution, can realize according to embodiments of the present invention one using microprocessor or digital signal processor (DSP) in practice
The some or all functions of a little or whole parts.The present invention is also implemented as performing method as described herein
Some or all equipment or program of device (for example, computer program and computer program product).
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair
Various modifications and variations are made in the case of bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (8)
1. the method for down-bound pilot frequency signal is sent in a kind of private network communication system, it is characterised in that including：
When sending down-bound pilot frequency signal using first port and second port, according to default pilot resources in downlink resource the
One distribution, the down-bound pilot frequency signal is modulated in the first downstream signal, will carry the of the down-bound pilot frequency signal
One downstream signal is sent by the first port；
When sending down-bound pilot frequency signal using first port and second port, according to default pilot resources in downlink resource the
Two distributions, the down-bound pilot frequency signal is modulated in the second downstream signal, will carry the of the down-bound pilot frequency signal
Two downstream signals are sent by the second port.
2. according to the method for claim 1, it is characterised in that the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
A kind of 3. base station, it is characterised in that including：
First processing units, for when sending down-bound pilot frequency signal using first port and second port, according to downlink resource
In default pilot resources first be distributed, the down-bound pilot frequency signal is modulated in the first downstream signal, will carry
The first downstream signal for stating down-bound pilot frequency signal is sent by the first port；
Second processing unit, for when sending down-bound pilot frequency signal using first port and second port, according to downlink resource
In default pilot resources second be distributed, the down-bound pilot frequency signal is modulated in the second downstream signal, will carry
The second downstream signal for stating down-bound pilot frequency signal is sent by the second port.
4. base station according to claim 3, it is characterised in that the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
5. the method for down-bound pilot frequency signal is sent in a kind of private network communication system, it is characterised in that including：
When sending down-bound pilot frequency signal using first port and second port, according to default pilot resources in downlink resource the
Two distributions, the down-bound pilot frequency signal is modulated in the first downstream signal, will carry the of the down-bound pilot frequency signal
One downstream signal is sent by the first port；
When sending down-bound pilot frequency signal using first port and second port, according to default pilot resources in downlink resource the
One distribution, the down-bound pilot frequency signal is modulated in the second downstream signal, will carry the of the down-bound pilot frequency signal
Two downstream signals are sent by the second port.
6. according to the method for claim 5, it is characterised in that the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
A kind of 7. base station, it is characterised in that including：
3rd processing unit, for when sending down-bound pilot frequency signal using first port and second port, according to downlink resource
In default pilot resources second be distributed, the down-bound pilot frequency signal is modulated in the first downstream signal, will carry
The first downstream signal for stating down-bound pilot frequency signal is sent by the first port；
Fourth processing unit, for when sending down-bound pilot frequency signal using first port and second port, according to downlink resource
In default pilot resources first be distributed, the down-bound pilot frequency signal is modulated in the second downstream signal, will carry
The second downstream signal for stating down-bound pilot frequency signal is sent by the second port.
8. base station according to claim 7, it is characterised in that the pilot resources first are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=1,5；
L=1,2,11,12；
nPRB=0,1 ..., 479；
The pilot resources second are distributed as follows：
The position of pilot resources is (k, l, nPRB)；
K=3,7；
L=1,2,11,12；
nPRB=0,1 ..., 479.
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| CN111988074A (en) * | 2019-05-24 | 2020-11-24 | 普天信息技术有限公司 | Downlink pilot frequency method and base station |
| CN112087798A (en) * | 2019-06-14 | 2020-12-15 | 普天信息技术有限公司 | Method and device for sending downlink two-antenna pilot frequency of power communication network |
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| Publication number | Publication date |
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| CN107666380B (en) | 2020-01-31 |
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