CN109327292A - Downlink reference signal resource allocation methods and device - Google Patents
Downlink reference signal resource allocation methods and device Download PDFInfo
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- CN109327292A CN109327292A CN201710641218.9A CN201710641218A CN109327292A CN 109327292 A CN109327292 A CN 109327292A CN 201710641218 A CN201710641218 A CN 201710641218A CN 109327292 A CN109327292 A CN 109327292A
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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
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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Abstract
The embodiment of the invention provides a kind of downlink reference signal resource allocation methods and devices, in this method, network side equipment (such as base station) obtains initial offset and relative displacement after generating downlink reference signal sequence, according to the index for the downlink resource OFDM symbol for including in the number of the subcarrier on the cell ID of each cell, subband and a radio frames.In first downlink resource OFDM symbol, subcarrier indicated by initial offset is distributed to first element in sequence, in remaining downlink resource OFDM symbol, subcarrier indicated by relative displacement is sequentially allocated to remaining element of downlink reference signal sequence, to be embodied as downlink reference signal allocation of downlink resource, guarantee the demodulation of down channel.
Description
Technical field
The present embodiments relate to fields of communication technology, and in particular to a kind of downlink reference signal resource allocation methods and dress
It sets.
Background technique
Each subband bandwidth of the existing wideband transmission system based on discrete narrow band polymerization is 25kHz.In order to improve frequency
Utilization rate is composed, as shown in Figure 1,11 effective subcarriers, subcarrier spacing 2kHz can be set in each subband.Wherein, each
A radio frames in subband are made of the subframe that 5 length are 5ms, and each subframe is by 9 OFDM symbols.Downlink resource is son
9 symbols of frame 0 and preceding 4 symbols of subframe 1, totally 13 symbols.Downlink resource be mainly used for transmit PBCH, PDCCH and
PDSCH channel.
However, inventors have found that at present for the broadband of discrete narrow band polymerization during implementing the embodiment of the present invention
Transmission system does not propose a kind of sender of feasible effective downlink reference signal also for the operating mode of more included polymerizations
Method.
Summary of the invention
One of the embodiment of the present invention be designed to provide a kind of reasonable downlink reference signal resource allocation methods and
Device.
In a first aspect, the embodiment of the invention provides a kind of downlink reference signal resource allocation methods, comprising:
Generate the downlink reference signal sequence of each cell, the length of the downlink reference signal sequence in a radio frames
The number for the downlink resource OFDM symbol for including is identical；
Initial offset is obtained according to the number of the subcarrier on the cell ID of each cell and the subband；According to institute
State the index and initial offset of the number of the subcarrier on subband, the downlink resource OFDM symbol for including in a radio frames
Obtain several relative displacements；
In first downlink resource OFDM symbol, subcarrier indicated by the initial offset is distributed into downlink ginseng
Examine first element of signal sequence；It, will be indicated by several relative displacements in remaining downlink resource OFDM symbol
The corresponding subcarrier of each downlink resource OFDM symbol is sequentially allocated to remaining element of downlink reference signal sequence.
Second aspect, the embodiment of the invention also provides a kind of downlink reference signal resource allocation devices, comprising:
Sequence generating unit, for generating the downlink reference signal sequence of each cell, the downlink reference signal sequence
The number of downlink resource OFDM symbol for including in length and a radio frames is identical；
The number of offset acquiring unit, the subcarrier on the cell ID and the subband according to each cell obtains
Take initial offset；According to the downlink resource OFDM symbol for including in the number of the subcarrier on the subband, a radio frames
Index and initial offset obtain several relative displacements；
Resource allocation unit is used in first downlink resource OFDM symbol, will be indicated by the initial offset
Subcarrier distributes to first element of downlink reference signal sequence；In remaining downlink resource OFDM symbol, by several
The corresponding subcarrier of each downlink resource OFDM symbol indicated by relative displacement is sequentially allocated to downlink reference signal sequence
Remaining element.
The third aspect, another embodiment of the present invention provide a kind of base station, including memory, processor and are stored in
On memory and the computer program that can run on a processor, the processor realize such as first aspect when executing described program
The step of the method.
Fourth aspect, another embodiment of the present invention provide a kind of computer readable storage medium, are stored thereon with meter
Calculation machine program, when which is executed by processor realize as described in relation to the first aspect method the step of.
The embodiment of the invention provides a kind of downlink reference signal resource allocation methods and device, in this method, network side
Equipment (such as base station) carries after generating downlink reference signal sequence according to the son on the cell ID of each cell, subband
The index of the downlink resource OFDM symbol for including in the number of wave and a radio frames obtains initial offset and relatively partially
Shifting amount.In first downlink resource OFDM symbol, subcarrier indicated by initial offset is distributed to first in sequence
Subcarrier indicated by relative displacement is sequentially allocated and joins to downlink in remaining downlink resource OFDM symbol by a element
Remaining element of signal sequence is examined, to be embodied as downlink reference signal allocation of downlink resource, guarantees the demodulation of down channel.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the wideband transmission system wireless frame structure schematic diagram in the prior art based on discrete narrow band polymerization
Fig. 2 is a kind of downlink reference signal resource allocation methods flow chart provided in an embodiment of the present invention；
Fig. 3 is that the embodiment of the present invention provides a kind of downlink reference signal resource allocation schematic diagram；
Fig. 4 is downlink reference signal resource allocation device structural schematic diagram provided in an embodiment of the present invention；
Fig. 5 is architecture of base station schematic diagram provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In a first aspect, An embodiment provides a kind of downlink reference signal resource allocation methods, such as Fig. 1 institute
Show, comprising:
S101, the downlink reference signal sequence for generating each cell, downlink reference signal resource allocation downlink reference signal sequence
The number of downlink resource OFDM symbol for including in the length of column and a radio frames is identical；
S102, according to the number of the subcarrier on the cell ID and downlink reference signal resource allocation subband of each cell
Obtain initial offset；Include according in the number of the subcarrier on downlink reference signal resource allocation subband, a radio frames
Downlink resource OFDM symbol index and initial offset obtain several relative displacements；
S103, in first downlink resource OFDM symbol, downlink reference signal resource allocation initial offset is signified
The subcarrier shown distributes to first element of downlink reference signal sequence；In remaining downlink resource OFDM symbol, if will
The corresponding subcarrier of each downlink resource OFDM symbol indicated by dry relative displacement, which is sequentially allocated, gives downlink reference signal sequence
Remaining element of column.
In downlink reference signal resource allocation methods provided in an embodiment of the present invention, network side equipment (such as base station) is in life
After downlink reference signal sequence, according to the number of the subcarrier on the cell ID of each cell, subband and a nothing
The index for the downlink resource OFDM symbol for including in line frame obtains initial offset and relative displacement.It is provided in first downlink
In the OFDM symbol of source, subcarrier indicated by initial offset is distributed into first element in sequence, in remaining downlink
In resource OFDM symbol, subcarrier indicated by relative displacement is sequentially allocated to remaining member of downlink reference signal sequence
Element guarantees the demodulation of down channel to be embodied as downlink reference signal allocation of downlink resource.
In practical applications, the downlink reference signal sequence of each cell of generation in step S101 can be in several ways
Implement, one of optional embodiment is illustrated below.
By taking system frame structure shown in FIG. 1 as an example, according to system frame structure shown in fig. 1, the downlink resource of each subband
There are 13 symbols, so each subband downlink reference signal uses length for 13 PN code, subband m generates in each radio frames
Downlink reference signal can be shown in formula (1).
Wherein, m is absolute subband number, and value range is related with the distribution condition of band system band.230M based on from
In the wideband transmission system for dissipating narrowband polymerization, each subband bandwidth is 25KHz, can be divided into 480 subbands at this time, therefore herein
When m value range be 0,1 ..., 479.
C (n) is pseudo-random sequence, and specific sequence generates content and hereinafter will be described in detail.Pseudo-random sequence
The each OFDM symbol initialization of generator is primary, initial value cinitSee formula (2).
Wherein, L is the index for the downlink resource OFDM symbol that a radio frames include, here for situation shown in fig. 1
L=0,1 ..., 12.Furthermore hereFor the mark of cell namely the ID of cell, introduce here cell ID be in order to
It avoids interfering with each other between cell, guarantees that down channel can be demodulated normally.
The generating process of pseudo-random sequence is described in detail below.
Length is MPNPseudo-random sequence c (n) generated according to such as formula (3) mode:
C (n)=(x1(n+NC)+x2(n+NC))mod2 (3)
Wherein:
(1) n=0,1 ..., MPN-1
(2)NC=1600
First sequence x1(n) x should be initialized as1(0)=1, x1..., (n)=0, n=1,2 30.Second sequence x2
(n) according to formulaIt is initialized, numerical value depends on the concrete application of sequence.
In the specific implementation, have in the way of distributing resource in the way of described in step S103 for downlink reference signal sequence
Many kinds, one of optional method of salary distribution can be as shown in Figure 3.Namely it is being carried out in the way of described in step S103
It is that two sons of the Elemental partition of downlink reference signal sequence carry in two neighboring downlink resource OFDM symbol after distribution
Wave is adjacent subcarrier, or is first subcarrier and the last one subcarrier on subband.
For ease of illustration above-mentioned resource allocation process, in Fig. 3 to each subcarrier and each downlink OFDM symbol into
Go number, the transversely arranged index for downlink OFDM symbol, longitudinal arrangement is the index of each subcarrier, additionally due to
The length of downlink reference signal sequence is identical as the number of downlink OFDM symbol, therefore to the element in downlink reference signal sequence
Also it is numbered, respectively element 0 arrives element 12.As shown in figure 3, in OFDM symbol 0, initial offset vshiftIt is four
Subcarrier, so vshiftIndicated subcarrier is subcarrier 4, by the element 0 of 4 allocation of downlink reference signal sequence of subcarrier；
In OFDM symbol 1, the subcarrier of the corresponding relative displacement of OFDM symbol 1 instruction is subcarrier 5, therefore subcarrier 5 is divided
Element 1 with downlink reference signal sequence；Subcarrier 10 is being distributed to descending reference letter by assigning process later and so on
It the element 6 of number sequence and then is distributed since subcarrier 0, assigns them to element 7, be then followed by and carry out in a manner described
Distribution, to realize that length is the distribution of the downlink resource of 13 downlink reference signal sequence.
As can be seen that determine that the major parameter how to be allocated is initial offset and relative displacement here,
Wherein the one of initial offset and relative displacement is obtained in order to realize resource allocation shown in Fig. 3, in step S102
Kind feasible embodiment can be with are as follows:
According to the number of the subcarrier on the cell ID and subband of each cell, initial offset is obtained based on formula (4):
Wherein, vshiftFor initial offset,For the cell ID of each cell,For of the subcarrier on subband
Number；
According to the index for the downlink resource OFDM symbol for including in the number of the subcarrier on subband, a radio frames and
Initial offset obtains relative displacement based on formula (5):
Wherein, k is relative displacement, and L is the index for the downlink resource OFDM symbol for including in a radio frames.
V is being obtained according to formula (4), (5)shiftIt, can be by reference signal sequence r and after kL(m) it is mapped to complex value
Modulation symbolOn, it specifically may refer to formula (6).
Wherein,
M: absolute subband number, as indicated earlier, the value range of m can be 0,1 in the case of figure 3 ..., 479.
The OFDM symbol number for including in one subframe, for situation shown in Fig. 3, hereIt can be 9；
The number for the subcarrier that one son takes, for situation shown in Fig. 3, hereIt is 11；
nsubf=0,1；Indicate in a radio frames carry out downlink resource transmission subframe number namely subframe 0 and
Subframe 1.
Therefore,
To just obtain the index for the downlink resource OFDM symbol that a radio frames include:
As can be seen that formula shown in formula (6) is a kind of mathematics of the downlink resource assigning process of step S103 in fact
Expression reasonably can distribute suitable down channel resources in this way for downlink reference signal sequence, under guarantee
The demodulation of row channel.
The method of salary distribution described in certain shown in Fig. 3 and above content is only a kind of optional embodiment, in reality
In application, the method for salary distribution similar with Fig. 3 can also be used.Specifically, the method for salary distribution of OFDM symbol 0 is constant, OFDM
1 sub-carriers 3 of symbol distribute to element 1, and 2 sub-carriers 2 of OFDM symbol distribute to element 2, and so on.Namely this mode
It is a kind of mode opposite with Fig. 3.
In addition, in the specific implementation, downlink reference signal here can be the downlink reference signal of PDCCH channel, or
For the downlink reference signal of PDSCH channel；Therefore, method provided in an embodiment of the present invention can also include: under PDCCH channel
The downlink reference signal of row reference signal and PDSCH channel is time-multiplexed the downlink resource on each subband.
For example, the downlink reference signal of 13 downlink OFDM symbols transmission PDCCH channel of the first radio frames, second
The downlink reference signal of 13 downlink OFDM symbols transmission PDSCH channel of a radio frames, to realize under PDCCH channel
The downlink reference signal of row reference signal and PDSCH channel is time-multiplexed the downlink resource on each subband, is making full use of band
It ensure that PDCCH channel is not interfered with each other with PDSCH channel under the premise of wide resource.
Second aspect, further embodiment of this invention provide a kind of downlink reference signal resource allocation device, such as Fig. 4 institute
Show, comprising:
Sequence generating unit 201, for generating the downlink reference signal sequence of each cell, the downlink reference signal sequence
Length and a radio frames in include the number of downlink resource OFDM symbol it is identical；
Offset acquiring unit 202, of the subcarrier on the cell ID and the subband according to each cell
Number obtains initial offset；According to the downlink resource OFDM for including in the number of the subcarrier on the subband, a radio frames
The index and initial offset of symbol obtain several relative displacements；
Resource allocation unit 203 is used in first downlink resource OFDM symbol, will be indicated by the initial offset
Subcarrier distribute to first element of downlink reference signal sequence；It, will be several in remaining downlink resource OFDM symbol
The corresponding subcarrier of each downlink resource OFDM symbol indicated by a relative displacement, which is sequentially allocated, gives downlink reference signal sequence
Remaining element.
It optionally, is the two of the Elemental partition of downlink reference signal sequence in two neighboring downlink resource OFDM symbol
A subcarrier is adjacent subcarrier, or is first subcarrier and the last one subcarrier on subband.
Optionally, the offset acquiring unit 202, is further used for:
According to the number of the subcarrier on the cell ID of each cell and the subband, initial offset is obtained based on following formula
Amount:
Wherein, vshiftFor initial offset,For the cell ID of each cell,For of the subcarrier on subband
Number；
According to the index for the downlink resource OFDM symbol for including in the number of the subcarrier on the subband, a radio frames
And initial offset, relative displacement is obtained based on following formula:
Wherein, k is relative displacement, and L is the index for the downlink resource OFDM symbol for including in a radio frames.
Optionally, the downlink reference signal is the downlink reference signal of PDCCH channel, or the downlink for PDSCH channel
Reference signal；
The resource allocation unit 203 is also used to: the downlink reference signal of PDCCH channel and the downlink ginseng of PDSCH channel
Examine the downlink resource that signal is time-multiplexed on each subband.
Since the downlink reference signal resource allocation device that the present embodiment is introduced is that can execute in the embodiment of the present invention
Downlink reference signal resource allocation methods device, so based on downlink reference signal described in the embodiment of the present invention provide
The method of source distribution, those skilled in the art can understand the tool of the downlink reference signal resource allocation device of the present embodiment
Body embodiment and its various change form, so how to realize this for the downlink reference signal resource allocation device herein
Downlink reference signal resource allocation methods in inventive embodiments are no longer discussed in detail.As long as those skilled in the art implement
Device used by downlink reference signal resource allocation methods in the embodiment of the present invention belongs to the model to be protected of the application
It encloses.
In addition, Fig. 5 shows the structural block diagram of computer equipment provided in an embodiment of the present invention.
Referring to Fig. 5, the computer equipment, comprising: processor (processor) 301, memory (memory) 302, bus
303 and bus interface 304；
Wherein, the processor 301 and memory 302 complete mutual communication by the bus 303；Bus connects
Mouth 304 is used for and external device carries out information exchange.
The processor 301 is used to call the program instruction in the memory 302, to execute above-mentioned each method embodiment
Provided method, for example, method described in first aspect.
A kind of computer program product is also disclosed in the embodiment of the present invention, and the computer program product is non-temporary including being stored in
Computer program on state computer readable storage medium, the computer program include program instruction, when described program instructs
When being computer-executed, computer is able to carry out method provided by above-mentioned each method embodiment, for example, first aspect institute
The method stated.
The embodiment of the present invention also provides a kind of non-transient computer readable storage medium, and the non-transient computer is readable to deposit
Storage media stores computer instruction, and the computer instruction makes the computer execute side provided by above-mentioned each method embodiment
Method, for example, method described in first aspect.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as a separate embodiment of the present invention.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments in this include institute in other embodiments
Including certain features rather than other feature, but the combination of the feature of different embodiment means in the scope of the present invention
Within and form different embodiments.For example, in the following claims, embodiment claimed it is any it
One can in any combination mode come using.
Certain unit embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) realize gateway according to an embodiment of the present invention, proxy server, in system
Some or all components some or all functions.The present invention is also implemented as executing side as described herein
Some or all device or device programs (for example, computer program and computer program product) of method.It is such
It realizes that program of the invention can store on a computer-readable medium, or can have the shape of one or more signal
Formula.Such signal can be downloaded from an internet website to obtain, and perhaps be provided on the carrier signal or with any other shape
Formula provides.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
Claims (10)
1. a kind of downlink reference signal resource allocation methods characterized by comprising
The downlink reference signal sequence of each cell is generated, includes in the length of the downlink reference signal sequence and a radio frames
Downlink resource OFDM symbol number it is identical；
Initial offset is obtained according to the number of the subcarrier on the cell ID of each cell and the subband；According to the son
The index and initial offset for the downlink resource OFDM symbol for including in the number of the subcarrier taken, a radio frames obtain
Several relative displacements；
In first downlink resource OFDM symbol, subcarrier indicated by the initial offset is distributed into descending reference letter
First element of number sequence；In remaining downlink resource OFDM symbol, under each indicated by several relative displacements
The corresponding subcarrier of row resource OFDM symbol is sequentially allocated to remaining element of downlink reference signal sequence.
2. the method according to claim 1, wherein being downlink in two neighboring downlink resource OFDM symbol
Two subcarriers of the Elemental partition of reference signal sequence are adjacent subcarrier, or for first subcarrier on subband and most
The latter subcarrier.
3. according to the method described in claim 2, it is characterized in that, the cell ID and the subband according to each cell
On subcarrier number obtain initial offset；Include according in the number of the subcarrier on the subband, a radio frames
Downlink resource OFDM symbol index and initial offset obtain several relative displacements, comprising:
According to the number of the subcarrier on the cell ID of each cell and the subband, initial offset is obtained based on following formula:
Wherein, vshiftFor initial offset,For the cell ID of each cell,For the number of the subcarrier on subband；
According to the index for the downlink resource OFDM symbol for including in the number of the subcarrier on the subband, a radio frames and
Initial offset obtains relative displacement based on following formula:
Wherein, k is relative displacement, and L is the index for the downlink resource OFDM symbol for including in a radio frames.
4. the method according to claim 1, wherein the downlink that the downlink reference signal is PDCCH channel is joined
Examine signal, or the downlink reference signal for PDSCH channel；
The method also includes the downlink reference signal of PDCCH channel and the downlink reference signal time division multiplexing of PDSCH channel are every
Downlink resource on height band.
5. a kind of downlink reference signal resource allocation device characterized by comprising
Sequence generating unit, for generating the downlink reference signal sequence of each cell, the length of the downlink reference signal sequence
It is identical as the number of downlink resource OFDM symbol for including in a radio frames；
The number of offset acquiring unit, the subcarrier on the cell ID and the subband according to each cell obtains just
Beginning offset；According to the rope for the downlink resource OFDM symbol for including in the number of the subcarrier on the subband, a radio frames
Regard it as and initial offset obtains several relative displacements；
Resource allocation unit, in first downlink resource OFDM symbol, son indicated by the initial offset to be carried
First element of wavelength-division dispensing downlink reference signal sequence；It is in remaining downlink resource OFDM symbol, several are opposite
The corresponding subcarrier of each downlink resource OFDM symbol indicated by offset is sequentially allocated remaining to downlink reference signal sequence
Element.
6. device according to claim 5, which is characterized in that be downlink in two neighboring downlink resource OFDM symbol
Two subcarriers of the Elemental partition of reference signal sequence are adjacent subcarrier, or for first subcarrier on subband and most
The latter subcarrier.
7. device according to claim 6, which is characterized in that the offset acquiring unit is further used for:
According to the number of the subcarrier on the cell ID of each cell and the subband, initial offset is obtained based on following formula:
Wherein, vshiftFor initial offset,For the cell ID of each cell,For the number of the subcarrier on subband；
According to the index for the downlink resource OFDM symbol for including in the number of the subcarrier on the subband, a radio frames and
Initial offset obtains relative displacement based on following formula:
Wherein, k is relative displacement, and L is the index for the downlink resource OFDM symbol for including in a radio frames.
8. device according to claim 5, which is characterized in that the downlink reference signal is that the downlink of PDCCH channel is joined
Examine signal, or the downlink reference signal for PDSCH channel；
The resource allocation unit is also used to: when the downlink reference signal of the downlink reference signal of PDCCH channel and PDSCH channel
Divide the downlink resource on each subband of multiplexing.
9. a kind of base station including memory, processor and stores the computer that can be run on a memory and on a processor
Program, which is characterized in that the processor realizes the step of the method as any such as Claims 1-4 when executing described program.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The step of the method as any such as Claims 1-4 is realized when execution.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111565458A (en) * | 2019-02-14 | 2020-08-21 | 电信科学技术研究院有限公司 | Downlink transmission method and device thereof |
| WO2024022264A1 (en) * | 2022-07-28 | 2024-02-01 | 维沃移动通信有限公司 | Signal processing method and apparatus, terminal, network side device and medium |
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| CN109327292B (en) | 2021-08-03 |
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