CN102142916B - Multiplexing method and multiplexing equipment of reference signal - Google Patents
Multiplexing method and multiplexing equipment of reference signal Download PDFInfo
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- CN102142916B CN102142916B CN201010103249.7A CN201010103249A CN102142916B CN 102142916 B CN102142916 B CN 102142916B CN 201010103249 A CN201010103249 A CN 201010103249A CN 102142916 B CN102142916 B CN 102142916B
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Abstract
The embodiment of the invention discloses a multiplexing method and a multiplexing equipment of a reference signal. The multiplexing method comprises the following steps: determining the number of subcarrier on a transmission frequency band; determining a public root sequence borne by the root sequence of the reference signal according to the number of subcarrier, wherein the digit of the public root sequence is same with that of the subcarrier; and according to the preset fixed position of the subcarrier of the first reference signal in the transmission frequency band, intercepting the digit from the public root sequence to form the root sequence of the first reference signal. When data is transmitted on the same time-frequency resource, the reference signals with root sequences which are not completely same are multiplexed.
Description
Technical field
The present invention relates to the communications field, particularly the multiplexing method of reference signal and multiplexing equipment.
Background technology
LTE(Long Term Evolution in wireless communications) or LTE-A(Long Term Evolution Advanced) in standard, LTE system up employing SC-FDMA(single-carrier frequency division multiple access) access way.As shown in Figure 1, from the time with the cycle of SC-FDMA symbol for basic time unit, the time that SC-FDMA symbol continues is about 1/14 millisecond.Each SC-FDMA symbol is divided into multiple subcarrier on frequency domain, is interposed between in LTE protocol and is decided to be 15kHz between subcarrier.On frequency domain, take subcarrier as base unit.
To sum up, running time-frequency resource is split as uniform unit, and be called resource units (Resource Elements) RE, each accounts for the duration of a SC-FDMA symbol RE time, frequency accounts for the width of a subcarrier.Each RE can transmit a symbol (such as a QPSK/16QAM/64QAM symbol).Be illustrated in figure 2 the schematic diagram that Radio Resource is cut into resource units.
Data (data) and reference information (Reference Signal) two classes roughly can be divided in the information of wireless communication system transmission.Wherein data are exactly the information that transmitting terminal needs to send to receiving terminal, and these information are unknown at receiving terminal originally, need to transfer to know these information by solution; And reference information is the information that transmitting terminal and receiving terminal have all been known, its effect is that conveniently receiving terminal carries out the operations such as channel estimating, thus helps receiving terminal to carry out the demodulation of data.
From the angle of each RE, if do not consider noise, Received signal strength transmits being and the product of the channel response on this RE.Simultaneously all there is correlation in wireless channel on time-domain and frequency-domain, be exactly channel response on adjacent RE is in brief much the same, as long as so on some RE transmission of reference signals, receiving terminal just can obtain the channel estimating on this RE.
More than figure is example, supposes that RE5 is used for transmission of reference signals, and other RE are used for transmission of data signals.Suppose that on RE5, reference signal data are r
5, the channel response on RE5 is H
5, then the signal that receiving terminal receives is y
5=H
5r
5(not considering the factors such as noise), due to r
5known at receiving terminal, so
just obtain the channel estimating on RE5.Around the channel response of RE1-9 and RE5 can be very approximate, just can obtain the channel estimating on around RE, thus can carry out data demodulates by the process of some algorithms.
In prior art, a part of RE can be used for transmission of reference signals.Specifically, some SC-FDMA symbol can be used to transmission of reference signals, on these SC-FDMA symbols, can need to obtain in the frequency range of channel estimating, continuous print subcarrier sends reference signal, as shown in Figure 2 b, all subcarriers of the 4th and the 11st SC-FDM symbol are all used for transmission of reference signals.Generation as reference signal sequence adopts following expression formula: s
Here
be called root sequence, sequence length is identical with the required number obtaining the subcarrier of channel estimating.Such as need to carry out channel estimating on 120 subcarriers, will select a length be 120 root sequence, the length of obvious reference signal is also 120.E
j α nbe called cyclic shift (Cyclic Shift, CS), wherein the value of α be [0,2 π) between value.Acting on of cyclic shift by multiplexing for multiple reference signal on identical running time-frequency resource, hereafter will be able to further describe.
As mentioned before, reference signal is used to carry out channel estimating.In some scenarios, can transmit more than a reference signal on identical running time-frequency resource, be distinguished by cyclic shift, independently channel estimation value can be obtained at receiving terminal.A kind of possible scene is as multiuser MIMO technology (MU-MIMO).Now have two users to carry out transfer of data on identical running time-frequency resource, now receiver needs to obtain two users independently channel estimating, could carry out demodulation respectively.In LTE protocol, two users can send reference signal on identical RE, and are distinguished by cyclic shift.
For reaching this purpose, the condition below reference signal demand fulfillment:
1. two reference signals adopt identical root sequence
2. two reference signals adopt different cyclic shifts
Illustrate how receiving end carries out channel estimating respectively for two reference signals below.
Hypothetical reference signal 1, sequence is
namely sequence length is N, cyclic shift α=0, and it be placed on by turn on 1st ~ N sub carriers and send, the channel of its process is expressed as H
1(n) (1≤n≤N); Hypothetical reference signal 2, sequence is
namely adopt identical root sequence, sequence length is N, cyclic shift α=π, and it be placed on by turn on 1st ~ N sub carriers and send, the channel of its process is expressed as H
2(n) (1≤n≤N).The signal obtained at receiving terminal can approximate expression be reference signal and channel response product on each subcarrier, and again because the two sends on identical running time-frequency resource, ignore noise, then the signal received can be expressed as:
y(n)=r
1(n)H
1(n)+r
2(n)H
2(n)
For Received signal strength divided by root sequence, obtain:
Sequence z (n) is handled as follows:
Due to wireless channel corresponding on adjacent sub-carrier approximately equal, so above-mentioned steps eliminates the channel response of user 2.The sequence obtained
length is
for
carry out interpolation processing, again expand to the sequence that length is N, just obtain channel response H
1the channel estimating of (n) (1≤n≤N).
Sequence z (n) is handled as follows:
The channel that this processing procedure eliminates user 1 is corresponding.The sequence obtained
length is
for
carry out interpolation processing, again expand to the sequence that length is N, just obtain channel response H
2the channel estimating of (n) (1≤n≤N).
In prior art, reference signal that can be multiplexing can more than two, and a demand fulfillment has same root sequence, and each reference signal has different cyclic shifts just they can be made a distinction one by one.But, if the root sequence of two reference signals on the subcarrier of common transport is incomplete same, when the length as root sequence is different, just cannot distinguish.
Summary of the invention
The embodiment of the present invention provides multiplexing method and the multiplexing equipment of reference signal, makes when root sequence is incomplete same, the multiplexing reference signal with incomplete same sequence when can carry out transfer of data on identical running time-frequency resource.
The embodiment of the present invention provides a kind of multiplexing method of reference signal, comprising:
Determine the sub-carrier number on transmission band, described sub-carrier number refers to the quantity of the subcarrier that described transmission band has, and described subcarrier is the base unit on frequency domain;
Determine according to sub-carrier number the common root sequence that signal root sequence for reference carries, the figure place of described common root sequence is identical with sub-carrier number;
According to the commitment positions that the subcarrier of the first reference signal is preset in transmission band, form the root sequence of the first reference signal from common root sequence truncation figure place.
The embodiment of the present invention also provides a kind of multiplexing equipment of reference signal, comprise common root sequence generating module: for determining the sub-carrier number on transmission band, the common root sequence that signal root sequence for reference carries is determined according to sub-carrier number, the figure place of described common root sequence is identical with sub-carrier number, described sub-carrier number refers to the quantity of the subcarrier that described transmission band has, and described subcarrier is the base unit on frequency domain;
First reference signal generation module: the commitment positions preset in transmission band according to the subcarrier of the first reference signal, forms the root sequence of the first reference signal from common root sequence truncation figure place.
And then, by the embodiment of the present invention according to sub-carrier number determination common root sequence, according to the commitment positions that subcarrier is preset in transmission band, form the root sequence of the first reference signal from common root sequence truncation figure place.And then when making identical running time-frequency resource to carry out transfer of data, multiplexingly can have the reference signal of incomplete same sequence.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram that each SC-FDMA symbol of prior art is divided into multiple subcarrier on frequency domain;
Fig. 2 a is the schematic diagram that prior art Radio Resource is cut into resource units;
Fig. 2 b is the schematic diagram of all subcarriers with transmission of reference signals of prior art the 4th and the 11st SC-FDM symbol;
Fig. 3 is the multiplexing method flow chart of embodiment of the present invention reference signal;
Fig. 4 is subcarrier that two reference signals correspondence is distributed common root sequence diagram when having an overlap;
Fig. 5 is subcarrier that two reference signals correspondence is distributed another schematic diagram of common root sequence when having an overlap;
Fig. 6 is subcarrier that three reference signals correspondence is distributed common root sequence diagram when having an overlap;
Fig. 7 is a kind of multiplexing equipment structural representation of reference signal; With
Fig. 8 is another example structure schematic diagram of the multiplexing equipment of reference signal of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 3, the embodiment of the present invention provides a kind of multiplexing method of reference signal, comprising:
Step 301: determine the sub-carrier number on transmission band; Being appreciated that transmission band here can be divided into some subbands (subband) on frequency domain, being also appreciated that the transmission band in a big way for being made up of some subbands.
Step 302: determine according to sub-carrier number the common root sequence that signal root sequence for reference carries, the figure place of described common root sequence is identical with sub-carrier number;
Step 303: the commitment positions preset in transmission band according to the subcarrier of the first reference signal, forms the root sequence of the first reference signal from common root sequence truncation figure place.
And then, by the embodiment of the present invention according to sub-carrier number determination common root sequence, according to the commitment positions that subcarrier is preset in transmission band, form the root sequence of the first reference signal from common root sequence truncation figure place.And then when making identical running time-frequency resource to carry out transfer of data, multiplexingly can have the reference signal of incomplete same sequence.
Optionally, common root sequence is identical with the root sequence of described first reference signal, intercepts whole root sequences that figure place forms the second reference signal from the root sequence of the first reference signal.
Optionally, also following steps are performed after step 303:
Step 304: the root sequence of resolving the first reference signal, intercepts the part root sequence that figure place forms the second reference signal from the root sequence of the first reference signal.
And then the embodiment of the present invention selects the root sequence of first reference signal with overlapping figure place and the root sequence of the second reference signal from common root sequence.The multiplexing reference signal with incomplete same sequence when making identical running time-frequency resource to carry out transfer of data.
Refer to following specific embodiment:
Step 301 can be specially: whole transmission band is divided into multiple transmission band subband (subband), supposes that the width of certain transmission band subband accounts for 1 ~ N sub carriers, and determines sub-carrier number that transmission band subband has to be N, N be the integer being greater than 0;
Step 302 is specially: for this transmission band subband above-mentioned defines the common root sequence that a length is N
this common root sequence visible has and the figure place of sub-carrier number equal number and N position;
Step 303 is specially: the commitment positions that different reference signal is preset in transmission band according to the subcarrier at oneself place intercepts in common root sequence, and adopts different cyclic shifts in the reference signal transmitted in same sub-carrier.Such as, selected part figure place from common root sequence is formed to the root sequence of the first reference signal; As preset the N of the first reference signal at this transmission band subband
1~ N
2sub carriers transmits, then only need from sequence
middle intercepting N
1~ N
2position as oneself root sequence, wherein N1<N2<N.
Step 304: the root sequence of resolving the first reference signal, intercepts the part or all of root sequence that figure place forms the root sequence of the second reference signal from the root sequence of the first reference signal.Optionally, according to the figure place of described common root sequence to corresponding subcarrier index, the overlay condition of the subcarrier number shared by the root sequence of the first reference signal and the subcarrier number shared by the root sequence of the second reference signal, intercepts the part root sequence that overlapped figure place forms the second reference signal from the first reference signal root sequence.Optional: after resolving the root sequence of the first reference signal, if obtain the first reference signal and the second reference signal can be transmitted on certain sub-carriers simultaneously, then these two reference signals should adopt different cyclic shifts.Be understood that the parton sequence chosen from the root sequence of the first reference signal is as whole subsequence of the root sequence of the second reference signal or parton sequence.
Optionally, described common root sequence is formed by the root sequence of described first reference signal and the root sequence assembly of the 3rd reference signal; Comprise further after step 304:
Resolve the root sequence of the 3rd reference signal, from the root sequence of the 3rd reference signal, intercept the part root sequence that figure place forms the second reference signal;
Splice the part root sequence chosen from the root sequence of the first reference signal and the root sequence of the 3rd reference signal respectively, form whole root sequences of the second reference signal.
Concrete, resolve the root sequence of the 3rd reference signal, from the root sequence of the 3rd reference signal, intercept the part root sequence that figure place forms the second reference signal, specifically comprise:
According to the figure place of described common root sequence to corresponding subcarrier index, the overlay condition of the subcarrier number shared by the root sequence of the 3rd reference signal and the subcarrier number shared by the root sequence of the second reference signal, intercepts the part root sequence of the second reference signal that overlapped figure place is formed from the 3rd reference signal root sequence.
As Fig. 4, in concrete mode one, the sub-carrier number had for transmission band subband is 120 to be described as follows.
Determine the length X of " subband coring row ": shared by the length of subband coring row and this subband, the sub-carrier number that has of transmission band subband has direct corresponding relation as X=N.Such as subband bandwidth is 120 subcarriers, then the reference signal common root of its correspondence must row length be exactly X=120 position.
Generate Zadoff-Chu sequence: find the maximum prime number N being less than X, then produce according to the generating mode of Zadoff-Chu sequence the Zadoff-Chu sequence that length is N, why do like this is that its length is prime number because Zadoff-Chu is a kind of special sequence.Continuity example above, suppose that the common root sequence length needed is X=120, then find the largest prime number N=113 being less than 120, then generate Zadoff-Chu sequence according to formula below:
Parameter q in expression formula, l belongs to system configuration.As long as be appreciated that determining N=113 just can generate the Zadoff-Chu sequence a (k) that length is 113.
Generate subband coring row: X-N position before the Zadoff-Chu sequence of generation is copied to the last of sequence, generates the sequence that new length is X, the subband coring row that the reference signal common root that Here it is needs must arrange.Continuity previous example, generates the Zadoff-Chu sequence a (k) that length is N=113, now the X-N=7 position of a (k) is copied to the last of former sequence, so just obtains subband coring row
length is 120.
User corresponding to the first reference signal intercepts " with reference to user's coring row " according to Resources allocation position: first by the subcarrier shared by subband according to k=0,1, ..., X-1 carries out label, subcarrier number shared by the resource that user is assigned to according to oneself, intercepts " the user coring row " of corresponding sequence as oneself from public subband coring row.Still according to example above, suppose that user has been assigned to the 12 to the 35 sub carriers and has transmitted, then from
intercept out k=12,13 ..., the part of 25 is as user's coring row of the first reference signal corresponding to this user.
When user corresponding to the second reference signal intercepts " with reference to user's coring row " according to Resources allocation position.Still according to example above, suppose that being assigned to the 18 to the 70 sub carriers transmits, then from
intercept out K=18,19 ... the part of 70 is as user's coring row of the first reference signal corresponding to this user.
Can find by analysis: the subcarrier that two users that in this programme, the first reference signal is corresponding with the second reference signal distribute has lap K=18,19 ... 25, then two users coring row content of transmission of reference signals on the subcarrier of overlap is the same.As long as so two users adopt different cyclic shifts just can carry out channel estimating to two users respectively; For other non-overlapped parts as the first reference signal K=12,13 ... 17, and the second reference signal K=26,27 ... 70, the channel estimation methods of other prior aries can be adopted to carry out channel estimating to two users respectively, again repeat no more.
Visible, the embodiment of the present invention select from the subsequence of common root sequence have overlapping subsequence (K=18,19 ... the sequence of 25) the root sequence of the first reference signal and the root sequence of the second reference signal.The multiplexing reference signal with incomplete same sequence when making identical running time-frequency resource to carry out transfer of data.
Visible, meet the following conditions, just can distinguish different reference signal, obtain independently channel estimating:
1, on the subcarrier jointly launched in different reference signal, do not need the root sequence of each reference signal completely the same, but require that the root sequence content of each reference signal is identical.
2, on the subcarrier jointly launched in different reference signal, each reference signal adopts different cyclic shifts.
The root sequence of each user can obtain by intercepting or splicing.After condition on meet, independently channel estimating can be realized.Below lift 3 kinds of concrete modes in the cards, but the mode this and more of reality, cannot enumerate, as long as the mode meeting principle above can carry out independent channel estimation.
Refer to Fig. 5, in concrete mode two, suppose that the subcarrier that the second reference signal of user 2 correspondence is distributed is included within the first reference signal Subcarrier range of user 1 distribution, then can from the sequence of the root sequence truncation corresponding length of reference signal 1.The two needs to adopt different cyclic shifts.An example is as shown below.Contrary, can be that the root sequence of reference signal 2 produces according to agreement, reference signal 1 directly adopts the root sequence of reference signal 2 on the subcarrier of common transport, and the root sequence of other subcarriers can have other generating mode, does not limit.
Determine user 1 coring row length X: coring row length and user 1 shared by sub-carrier number have direct corresponding relation.Such as user 1 is assigned with 72 subcarriers, then the reference signal coring row length of its correspondence is exactly X=72 position.Generate Zadoff-Chu sequence: find the maximum prime number N being less than X, then produce according to the generating mode of Zadoff-Chu sequence the Zadoff-Chu sequence that length is N, why do like this is that its length is necessary for prime number because Zadoff-Chu is a kind of special sequence.Continuity example above, suppose that the coring row length needed is X=72, then find the largest prime number N=71 being less than 72, then generate Zadoff-Chu sequence according to formula below:
Parameter q in expression formula, l belongs to system configuration, determines N=71 as seen and just can generate the Zadoff-Chu sequence a (k) that length is 71.Generate the coring row of user 1: X-N position before the Zadoff-Chu sequence of generation is copied to the last of sequence, generates the sequence that new length is X, Here it is needs the coring of user 1 to arrange.Continuity previous example, generates the Zadoff-Chu sequence a (k) that length is N=71, now the X-N=1 position of a (k) is copied to the last of former sequence, so just obtains the coring row of user 1
length is 72.
Obtain the coring row of user 2: the position that the subcarrier that user 2 distributes according to oneself is overlapping with user 1, from
the corresponding short data records of middle intercepting is as the coring row of oneself.Suppose the 24-47 sub carriers location overlap of subcarrier and user shared by user 2, then user 2 intercepts
24-47 position as oneself coring row.
Slightly analyze and can find that this programme can ensure that two users coring row content of transmission of reference signals on the subcarrier of overlap is the same.
Refer to Fig. 6, in concrete mode three, suppose that the first reference signal 1 partly overlaps with second and third reference signal, then with the root sequence truncation corresponding sequence of the second reference signal lap from the second reference signal, with the root sequence truncation corresponding sequence of the 3rd reference signal lap from the 3rd reference signal, thus obtain the root sequence of rear first reference signal of splicing.First reference signal adopts different cyclic shifts from second, third reference signal, in the example of figure below, because the second reference signal and the 3rd reference signal do not have overlap on frequency domain, then can adopt identical cyclic shift.
User 2, and the coring row of 3 conventionally generate.
User 1 intercepts corresponding subsequence according to arranging from the coring of user 2 to the sub-carrier positions of user 2 overlap.
User 1 intercepts corresponding subsequence according to arranging from the coring of user 3 to the sub-carrier positions of user 3 overlap.
By 2), 3) after the subsequence splicing that obtains in step, obtain the coring row of user 1.
By such design, receiving terminal can distinguish multiplexing reference signal according to cyclic shift equally, obtains independently channel estimating.Eliminate the restriction of the necessary equal length of different reference signal simultaneously.
The visible explanation by above-described embodiment, for the demodulated reference signal of up MU-MIMO.If two users adopt MU-MIMO, not needing must be completely overlapping on sub-carriers, and reference signal length is identical, and can only meet following two conditions:
1, on the subcarrier jointly launched in different reference signal, but require that the root sequence content of each reference signal is identical;
2, on the subcarrier jointly launched in different reference signal, each reference signal adopts different cyclic shifts.
Same for the uplink measurement reference signal in LTE.The present invention does not require that multiplexing uplink reference signals all uses equal length.
The embodiment of the present invention also provides a kind of multiplexing equipment 700 of reference signal, and this multiplexing equipment can be to provide the terminal of uplink measurement reference signal, also can be to provide the base station of downstream measurement reference signal.The present embodiment illustrates to be applicable to LTE advanced terminal, and the multiplexing equipment 700 of reference signal comprises:
Common root sequence generating module 710: for determining the sub-carrier number on transmission band, determine according to sub-carrier number the common root sequence that signal root sequence for reference carries, the figure place of described common root sequence is identical with sub-carrier number;
First reference signal generation module 720: the commitment positions preset in transmission band according to the subcarrier of the first reference signal, forms the root sequence of the first reference signal from common root sequence truncation figure place.
And then, by the embodiment of the present invention according to sub-carrier number determination common root sequence, according to the commitment positions that subcarrier is preset in transmission band, form the root sequence of the first reference signal from common root sequence truncation figure place.And then when making identical running time-frequency resource to carry out transfer of data, multiplexingly can have the reference signal of incomplete same sequence.
Optionally, the first reference signal generation module is further used for: from the root sequence of the first reference signal, intercept whole root sequences that figure place forms the second reference signal, described common root sequence is identical with the root sequence of described first reference signal.
Refer to Fig. 8, the multiplexing equipment 700 of reference signal comprises further: the second reference signal generation module 730: the root sequence of resolving the first reference signal, intercepts the part root sequence that figure place forms the second reference signal from the root sequence of the first reference signal.Concrete, second reference signal generation module 730: also for the figure place according to described common root sequence to corresponding subcarrier index, the overlay condition of the subcarrier number shared by the root sequence of the first reference signal and the subcarrier number shared by the root sequence of the second reference signal, intercepts the part root sequence that overlapped figure place forms the second reference signal from the first reference signal root sequence.
It is further: if described common root sequence is formed by the root sequence of described first reference signal and the root sequence assembly of the 3rd reference signal, second reference signal generation module 730 also for: resolve the root sequence of the 3rd reference signal, from the root sequence of the 3rd reference signal, intercept the part root sequence that figure place forms the second reference signal; Splicing respectively from the first reference signal with sequence and the 3rd reference signal with the part root sequence chosen sequence, form the whole of the second reference signal and follow sequence.
To sum up, the embodiment of the present invention provides multiplexing method and the base station of reference signal, makes to select the root sequence of first reference signal with overlapping subsequence and the root sequence of the second reference signal from the subsequence of common root sequence.And then the multiplexing reference signal with incomplete same sequence when identical running time-frequency resource carrying out transfer of data.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (7)
1. a multiplexing method for uplink reference signals, is characterized in that, comprising:
Determine the sub-carrier number on transmission band, described sub-carrier number refers to the quantity of the subcarrier that described transmission band has, and described subcarrier is the base unit on frequency domain;
Determine according to sub-carrier number the common root sequence that signal root sequence for reference carries, the figure place of described common root sequence is identical with sub-carrier number;
According to the commitment positions that the subcarrier of the first reference signal is preset in transmission band, form the root sequence of the first reference signal from common root sequence truncation figure place;
Described common root sequence is identical with the root sequence of described first reference signal, intercepts whole root sequences that figure place forms the second reference signal from the root sequence of the first reference signal; Or described method also comprises: the root sequence of resolving the first reference signal, from the root sequence of the first reference signal, intercept the part root sequence that figure place forms the second reference signal.
2. the method for claim 1, is characterized in that, resolves the root sequence of the first reference signal, intercepts the part root sequence that figure place forms the second reference signal, specifically comprise from the root sequence of the first reference signal:
According to the figure place of described common root sequence to corresponding subcarrier index, the overlay condition of the subcarrier number shared by the root sequence of the first reference signal and the subcarrier number shared by the root sequence of the second reference signal, intercepts the part root sequence that overlapped figure place forms the second reference signal from the first reference signal root sequence.
3. the method for claim 1, is characterized in that, described common root sequence is formed by the root sequence of described first reference signal and the root sequence assembly of the 3rd reference signal;
Described method comprises further:
Resolve the root sequence of the 3rd reference signal, from the root sequence of the 3rd reference signal, intercept the part root sequence that figure place forms the second reference signal;
Splice the part root sequence chosen from the root sequence of the first reference signal and the root sequence of the 3rd reference signal respectively, form whole root sequences of the second reference signal.
4. method as claimed in claim 3, is characterized in that, resolves the root sequence of the 3rd reference signal, intercepts the part root sequence that figure place forms the second reference signal, specifically comprise from the root sequence of the 3rd reference signal:
According to the figure place of described common root sequence to corresponding subcarrier index, the overlay condition of the subcarrier number shared by the root sequence of the 3rd reference signal and the subcarrier number shared by the root sequence of the second reference signal, intercepts the part root sequence of the second reference signal that overlapped figure place is formed from the 3rd reference signal root sequence.
5. a multiplexing equipment for uplink reference signals, is characterized in that, comprising:
Common root sequence generating module: for determining the sub-carrier number on transmission band, the common root sequence that signal root sequence for reference carries is determined according to sub-carrier number, the figure place of described common root sequence is identical with sub-carrier number, described sub-carrier number refers to the quantity of the subcarrier that described transmission band has, and described subcarrier is the base unit on frequency domain;
First reference signal generation module: the commitment positions preset in transmission band according to the subcarrier of the first reference signal, forms the root sequence of the first reference signal from common root sequence truncation figure place;
First reference signal generation module is further used for: from the root sequence of the first reference signal, intercept whole root sequences that figure place forms the second reference signal, described common root sequence is identical with the root sequence of described first reference signal; Or described multiplexing equipment also comprises: the second reference signal generation module: the root sequence of resolving the first reference signal, from the root sequence of the first reference signal, intercept the part root sequence that figure place forms the second reference signal.
6. multiplexing equipment as claimed in claim 5, is characterized in that, also comprise:
Second reference signal generation module: for the figure place according to described common root sequence to corresponding subcarrier index, the overlay condition of the subcarrier number shared by the root sequence of the first reference signal and the subcarrier number shared by the root sequence of the second reference signal, intercepts the part root sequence that overlapped figure place forms the second reference signal from the first reference signal root sequence.
7. multiplexing equipment as claimed in claim 5, it is characterized in that, described common root sequence is formed by the root sequence of described first reference signal and the root sequence assembly of the 3rd reference signal;
Second reference signal generation module also for: resolve the root sequence of the 3rd reference signal, from the root sequence of the 3rd reference signal, intercept the part root sequence that figure place forms the second reference signal; Splicing respectively from the first reference signal with sequence and the 3rd reference signal with the part root sequence chosen sequence, form the whole of the second reference signal and follow sequence.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102957654B (en) * | 2011-08-29 | 2018-03-02 | 中兴通讯股份有限公司 | The transmission method and device of a kind of reference signal |
| WO2016004634A1 (en) * | 2014-07-11 | 2016-01-14 | Mediatek Singapore Pte. Ltd. | Method for enb, ue uplink transmission and reception |
| CN105812106B (en) * | 2014-12-31 | 2019-05-24 | 华为技术有限公司 | The method and apparatus for transmitting upstream data |
| CN108282275B (en) | 2017-01-06 | 2021-09-14 | 华为技术有限公司 | Data transmission method and device |
| CN109150464B (en) | 2017-06-16 | 2020-09-29 | 华为技术有限公司 | Wireless communication method and wireless communication device |
| CN111865517B (en) * | 2019-04-25 | 2022-06-14 | 华为技术有限公司 | Method and device for transmitting reference signal |
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| US6226337B1 (en) * | 1993-09-10 | 2001-05-01 | Deutsche Thomson-Brandt Gmbh | Method for the transmission of reference signals in an OFDM system |
| CN101622844A (en) * | 2007-03-14 | 2010-01-06 | 夏普株式会社 | Systems and methods for improving reference signals for spatially multiplexed cellular systems |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6226337B1 (en) * | 1993-09-10 | 2001-05-01 | Deutsche Thomson-Brandt Gmbh | Method for the transmission of reference signals in an OFDM system |
| CN101622844A (en) * | 2007-03-14 | 2010-01-06 | 夏普株式会社 | Systems and methods for improving reference signals for spatially multiplexed cellular systems |
Non-Patent Citations (2)
| Title |
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| DM RS sequence design for Release 9 dual-layer beam-forming,R1-094156;LG Electronics;《3GPP TSG RAN WG1#58bis》;20091016;第1-13页 * |
| Nokia Siemens Networks et al.Considerations on Initialization and Mapping of DM-RS Sequence,R1-093304.《3GPP TSG RAN WG1 #58 Meeting》.2009,第1-4页. * |
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