CN101370242B - Code distribution method, apparatus and system for ascending control signal channel - Google Patents
Code distribution method, apparatus and system for ascending control signal channel Download PDFInfo
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Abstract
This invention is related to the mobile communication filed, disclosing a method of code distribution of up control channel which is capable of randomly controlling interference in blocks among channels. The method of code distribution of up control channel includes following steps: assigning a cyclic shift in block and an extending code among blocks to the control channel; setting a jumping on at least one block where the extending code among blocks acts to the cyclic shift in block assigned by control channel in a time slot so as to differently distribute the control channels on at least two blocks; setting the distributions of control channels on at least two blocks where the extending code among blocks acts in a time slot to be the same or integral shift based on the orthogonal property of the extending code among blocks, wherein the orthogonal property indicates that the extending code among blocks of two control channels is satisfied with the orthogonality on the mark when composing a certain part of the extending code.
Description
Technical field
The present invention relates to field of wireless communication, particularly the sign indicating number distribution technique of ascending control channel in the OFDM (Orthogonal frequencydivision multiplexing is called for short OFDM).
Background technology
In existing OFDM/OFDMA wireless communication system, the base station is the ascending control channel distribution of a plurality of user terminals or has reserved one or more public running time-frequency resources.In a time slice (for example time slot), ascending control channel that can a plurality of user terminals of code division multiplexing on public running time-frequency resource, the ascending control channel of these different user terminals is distinguished through different sign indicating numbers.
Fig. 1 is a kind of running time-frequency resource structural representation of ascending control channel, and wherein, a time slot can be divided into several pieces (comprising an OFDM symbol in the piece usually) in time, and the piece that has is used for transmitting data, and the piece that has is used for transmitting pilot tone.
Code division multiplexing can be based on two kinds of code division multiplexing technology on above-mentioned public running time-frequency resource for the ascending control channel of a plurality of user terminals: the different cyclic shifts with certain sequence in the piece are distinguished; Interblock is distinguished with the interblock extended code of quadrature in the time slot.The ascending control channel or the cyclic shift in the piece of the different user terminals of code division multiplexing on same public running time-frequency resource are different, or the interblock extended code is different, otherwise neither with.This public running time-frequency resource
is to be confirmed by the quantity of operational cyclic shift in the spreading factor of above-mentioned interblock extended code and the piece with the quantity of the ascending control channel of code division multiplexing.
In existing OFDM/OFDMA wireless communication system, the sequence that adopts in the piece normally length is certain sequence of 12,12 complete quadratures of cyclic shift of this sequence.But because the influence of factor such as multidiameter delay, at receiving terminal, cyclic shift various signals quadrature no longer often exists and disturbs in the piece.Usually the interval of cyclic shift is big more in the piece, and mutual interference is more little.Length is that the largest interval between the different cyclic shifts of certain sequence of 12 is 6, and the minimum interval is 1.Wherein length is that 12 cyclic shifts of certain sequence of 12 are S1, S2 ..., S12, then S1 and S2, S12 is spaced apart 1, S1 and S3, S11 is spaced apart 2 ... the rest may be inferred.
In existing OFDM/OFDMA wireless communication system, the interblock of data and pilot tone expansion is separately carried out: all are used for transmitting on the piece of data and carry out the interblock expansion data division in a time slot; All are used for transmitting on the piece of pilot tone and carry out the interblock expansion pilot portion in a time slot.Such as; Comprise 7 pieces in the time slot, the running time-frequency resource structure of certain control channel possibly be that 4 pieces in the time slot are used for transmitting data, and 3 pieces are used for transmitting pilot tone; The interblock spreading factor that also is data division is 4, and the interblock spreading factor of pilot portion is 3; The control channel that also has need not transmit pilot tone, only takies above-mentioned 4 pieces that are used for transmitting data.Usually, the quantity of mutually orthogonal interblock extended code equals the length (spreading factor) of sign indicating number.Owing to the influence of factor such as become during channel, at receiving terminal, interblock extended code various signals is also quadrature no longer often, exists and disturbs.Usually the user terminal translational speed is high more, and the Shi Bianyue of channel is fast, and mutual interference is big more.
In order to overcome the influence that multidiameter delay brings, cyclic shift is 6 in 12 different cyclic shifts of certain sequence in the piece that uses simultaneously, promptly whenever gets one at a distance from a cyclic shift.Like this, if the spreading factor of pilot portion is 3, the spreading factor of data division is 4, can code division multiplexing on the above-mentioned public running time-frequency resource 18 ascending control channels that not only transmitted pilot tone but also transmitted data.The code distributing method of the data division of these 18 ascending control channels is as shown in Figure 2.The code distributing method of the ascending control channel of the following stated except special declaration, all is meant the code distributing method of data division, and " ascending control channel " also abbreviates " control channel " as.In order to represent conveniently each ascending control channel to be numbered, be expressed as CH1～CH18, the order of numbering is not represented concrete implication, below no longer explanation.
In this code distributing method, cyclic shift has all been distributed to 3 control channels in each piece that is used, and these 3 control channels are distinguished through different interblock extended codes, and it uses 3 in the extended code between 4 different masses; 6 control channels that distributed extended code between same block are distinguished through cyclic shift in 6 different pieces, and wherein any cyclic shift interval between the two is more than or equal to 2.
For the interference randomization between the cyclic shift in the piece that makes channel; Distribute to the interior cyclic shift of piece of channel and can on the piece of interblock extended code effect/expansion, carry out saltus step; As shown in Figure 3; Promptly on each piece of interblock extended code effect, the distribution of control channel is different on the two-dimension code plane of being made up of cyclic shift in interblock extended code and the piece.Yet, for the different channel of interblock extended code, above-mentioned saltus step in randomization in the piece in the interference between the cyclic shift, destroyed the interblock orthogonality of above-mentioned channel on a time slot.Such as, the interblock extended code of two channels is the extended code that length equals 4, supposes it is respectively [1,1,1; 1], [1 ,-1,1 ,-1]; Interference in their piece between the cyclic shift is through after the randomization, equals on 4 pieces of interblock extended code effect/expansion of 4 all differences in above-mentioned length, supposes to be respectively x0, x1, x2; X3, this two interchannels interference on a time slot is x0-x1+x2-x3 so, is not equal to 0 usually, also promptly, the interblock orthogonality between them has been destroyed.
Summary of the invention
In view of this; The method that the present invention provides a kind of sign indicating number of ascending control channel to distribute; Orthogonal property according to the interblock extended code of control channel in the interference randomization in making the piece of some control channel between the cyclic shift, does not also destroy the interblock orthogonality between them.
For realizing above-mentioned purpose, the method that the present invention provides a kind of sign indicating number of ascending control channel to distribute comprises following steps:
Give cyclic shift and interblock extended code in the control channel allocation block;
On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel is assigned to, makes the distributed and arranged of the control channel at least two pieces different;
Orthogonal property according to the interblock extended code; With the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation, and wherein orthogonal property is meant that the interblock extended code of two control channels satisfies quadrature on certain a part of symbol of forming extended code.
For realizing above-mentioned purpose, real-time mode of the present invention also provides a kind of sign indicating number assigned unit of ascending control channel, comprising:
Memory cell, the distribution that is used to store control channel, wherein said control channel is distributed on the two-dimension code plane of interior cyclic shift of piece and interblock extended code composition, and the interblock extended code satisfies quadrature on the part symbol of forming extended code;
Control unit; Be used for being provided with the distribution of memory cell control channel; Wherein according to the orthogonal property of interblock extended code; On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel is assigned to, makes the distributed and arranged of the control channel at least two pieces different; And with the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation.
For realizing above-mentioned purpose, the system that embodiment of the present invention also provides a kind of sign indicating number of ascending control channel to distribute comprises:
The base station comprises first memory cell and first control unit and detecting unit;
User terminal comprises second memory cell and second control unit and transmitter unit;
Wherein first memory cell and second memory cell distribution that is used to store control channel; Wherein said control channel is distributed on the two-dimension code plane of interior cyclic shift of piece and interblock extended code composition, and the interblock extended code satisfies quadrature on the part symbol of forming extended code;
Wherein first control module and second control module are used for being provided with respectively the distribution of first memory cell and the second memory cell control channel; Wherein based on the orthogonal property of interblock extended code; On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel is assigned to, makes the distributed and arranged of the control channel at least two pieces different; And with the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation;
Wherein transmitter unit is used for utilizing its upstream control signaling of sign indicating number emission of user terminal control channel distribution; Said detecting unit is used to receive said upstream control signaling, and detects the upstream control signaling of user terminal according to the sign indicating number that the ascending control channel of user terminal distributes.
The beneficial effect of embodiment of the present invention; Because there is orthogonality relation in the part symbol in the interblock extended code of two control channels, distribute to when cyclic shift is carried out saltus step in the piece of control channel on the piece of interblock extended code effect, the identical or integral translation of distributed and arranged of control channel in two pieces wherein; Identical or the integral translation of the distributed and arranged of control channel in all the other pieces; It is identical to be implemented in the piece on above-mentioned two pieces the interference between the cyclic shift, and the interference in the piece on all the other pieces between the cyclic shift is also identical, can not destroy the interblock orthogonality between any two control channels that there is orthogonality relation in the corresponding symbol of interblock extended code; Thereby between the randomization control channel, disturb in the piece; Simultaneously, satisfy the interblock quadrature, reduced inter-block-interference.
Description of drawings
Fig. 1 is the running time-frequency resource structural representation of ascending control channel in the prior art;
Fig. 2 is the code distributing method sketch map of prior art ascending control channel;
Fig. 3 is the code distributing method sketch map of prior art ascending control channel;
Fig. 4 is the code distributing method sketch map of ascending control channel of the present invention;
Fig. 5 is the code distributing method sketch map of first embodiment of the invention ascending control channel;
Fig. 6 is the code distributing method sketch map of second embodiment of the invention ascending control channel;
Fig. 7 is the code distributing method sketch map of third embodiment of the invention ascending control channel;
Fig. 8 is the code distributing method sketch map of four embodiment of the invention ascending control channel;
Fig. 9 is the code distributing method sketch map of fifth embodiment of the invention ascending control channel;
Figure 10 is the code distributing method sketch map of seventh embodiment of the invention ascending control channel;
Figure 11 is the code distributing method sketch map of eighth embodiment of the invention ascending control channel;
Figure 12 is the code distributing method sketch map of nineth embodiment of the invention ascending control channel;
Figure 13 is the code distributing method sketch map of tenth embodiment of the invention ascending control channel;
Figure 14 is the sign indicating number distribution system sketch map of ascending control channel of the present invention.
Embodiment
For the technical scheme and the advantage that make embodiment of the present invention is clearer, will combine accompanying drawing that the present invention is done to describe in detail further below.
The code distributing method of a kind of ascending control channel of the present invention is as shown in Figure 4, and wherein ascending control channel is designated hereinafter simply as control channel, and concrete steps are following:
Step 101 is given cyclic shift and interblock extended code in the control channel allocation block;
In all control channel distribution modes; Because user terminal high-speed mobile; For cyclic shift interval in the piece is 1; Below be called adjacent control channel and since in the piece that the influence of multidiameter delay causes in the interference ratio piece between the cyclic shift cyclic shift interval big greater than 1 interference, so control channel distribution mode of the present invention is an example with adjacent control channel mainly; But the distribution mode for non-conterminous control channel is equally applicable to the present invention, wherein can have following several kinds for adjacent control channel distribution mode:
Wherein can code division multiplexing on a public running time-frequency resource 18 control channels that not only transmitted pilot tone but also transmitted data, first kind of method of salary distribution of data division or pilot portion control channel can adopt the method for salary distribution in the prior art one.
Second kind can be adopted 18 control channels are distributed in 12 pieces in cyclic shift and 3 the interblock extended codes; Wherein use cyclic shift in 12 pieces simultaneously, and per 6 control channels distribute that cyclic shift interval in the piece between the identical control channel of identical interblock extended code, interblock extended code equals 2, cyclic shift interval is that 1 the control channel interblock extended code of distributing is different in the piece.Below be that 1 control channel is called adjacent channel with cyclic shift interval in the piece.Wherein the phase mutual interference between this method of salary distribution control channel that compared with prior art the interior cyclic shift of piece is identical has reduced.
Can code division multiplexing on a public running time-frequency resource 16 control channels that not only transmitted pilot tone but also transmitted data; The control channel method of salary distribution of data division or pilot portion is following: 16 control channels are distributed in 12 pieces in cyclic shift and 4 the interblock extended codes; Wherein use cyclic shift in 12 pieces simultaneously, and per 4 control channels distribute that cyclic shift interval in the piece between the identical control channel of identical interblock extended code, interblock extended code equals 3, cyclic shift interval is that 1 the control channel interblock extended code of distributing is different in the piece.Though wherein this method of salary distribution has reduced by 2 control channels than the above-mentioned second way, adjacent control channel quantity has also reduced, thereby has more reduced the interference between the adjacent control channel.
Can 24 control channels of code division multiplexing on a public running time-frequency resource; Wherein 18 control channels not only transmit pilot tone but also transmit data; 6 control channels only transmit data; The sign indicating number method of salary distribution for 24 control channels transmission data divisions is following: 24 control channels are distributed in 12 pieces in cyclic shift and 4 the interblock extended codes; Wherein use cyclic shift in 12 pieces simultaneously, and per 6 control channels distribute that cyclic shift interval in the piece between the identical control channel of identical interblock extended code, interblock extended code equals 2, cyclic shift interval is that 1 the control channel interblock extended code of distributing is different in the piece.
The method of salary distribution of above-mentioned control channel only is directed to and in a slot time, comprises 7 pieces; Wherein 3 pieces are used for transmitting pilot tone; 4 pieces are used for transmitting data and give an example; For comprising different masses at a slot time, and the piece that is used for transmitting data and pilot tone is applicable to the present invention too according to condition of different.
Step 102 is provided with saltus step at least one piece with cyclic shift interblock extended code effect in a time slot in the piece of control channel distribution, and the distributed and arranged that makes the control channel at least two pieces is for different;
Wherein, cyclic shift is provided with saltus step in the piece that in an above-mentioned time slot, on 3 of the effect of interblock extended code or 4 pieces control channel is distributed, and is used in the even above-mentioned control channel transmitting that cyclic shift only is provided with saltus step in the piece of pilot tone on the piece of transmission pilot tone; Be used in the even above-mentioned control channel transmitting that the cyclic shift ring only is provided with saltus step in the piece of data on the piece of transmission data.
Wherein, For any two control channels; If cyclic shift interval equals 1 in the piece of these two control channels on a piece of interblock extended code effect; Then on other at least one pieces of said interblock extended code effect, be set to cyclic shift interval greater than 1 in the piece, promptly go up adjacent control channel, then on other at least one pieces, be provided with non-conterminous for some.
Step 103 is according to the orthogonal property of interblock extended code, with the identical or integral translation of distributed and arranged of control channel at least two pieces in the time slot.
Wherein orthogonal property is meant that there is orthogonality relation in the part symbol in the interblock extended code of two control channels, is example with the Walsh sign indicating number, and wherein sequence length is that 4 interblock extended code is following in the Walsh sign indicating number:
c1＝[1111]；c2＝[11-1-1]；c3＝[1-11-1]；c4＝[1-1-11]；
Be that a kind of extended code is following in addition perhaps:
c1＝[111-1]；c2＝[11-11]；c3＝[1-111]；c4＝[-1111]；
Wherein c1 and c3 are at preceding two continuous symbol quadratures, at latter two continuous symbol quadrature, to call the short each other quadrature of these two sign indicating numbers in the following text.C1 and c4 in addition with this specific character, c2 and c3, c2 and c4.On the contrary, c1 and c2 do not have this character, and they are quadrature on whole symbols of sequence, to call long quadrature between the two in the following text, have the c3 and the c4 in addition of this specific character.
Wherein, the sign indicating number of short quadrature can be divided into two types again each other, and one type is c1 and the c3 like above-mentioned two kinds of sign indicating numbers; C2 and c4, their characteristics are the 2nd, 3 symbol of sequence (two the middle symbols) contrary signs after two sign indicating number sequences multiply each other; Be R13=R24=[+-+-], below be called the short quadrature of I class; Another kind of is c1 and c4 like above-mentioned two kinds of sign indicating numbers, c2 and c3, and their characteristics are the 2nd, 3 symbol of sequence (two the middle symbols) jack per lines after two sign indicating number sequences multiply each other, promptly R23=R14=[+--+] below is called the short quadrature of II class.
Above-mentioned is that 4 interblock extended code is an example with sequence length in the Walsh sign indicating number, and wherein sequence length is that 2,4,6,8 to 2N part symbol exists the extended code of orthogonality relation all to be suitable for the present invention.
Orthogonal property based on above-mentioned extended code; For being used for transmitting pilot tone 3 pieces are arranged; If wherein in two pieces arbitrarily the corresponding symbol of the interblock extended code of certain two control channel have orthogonality relation; Identical or the integral translation of the distributed and arranged of then above-mentioned two piece control channels can guarantee the interblock orthogonality of these two control channels; For 4 pieces that are used for transmitting data; If wherein there is orthogonality relation in the corresponding symbol of the interblock extended code of certain two control channel in two pieces; Identical or the integral translation of the distributed and arranged of then above-mentioned two piece control channels; Identical or the integral translation of the distributed and arranged of other two piece control channels; Can guarantee the interblock orthogonality of these two control channels; The distributed and arranged of other two piece control channels is inequality, can guarantee the part interblock orthogonality of these two control channels;
This shows; Because there is orthogonality relation in the part symbol in the interblock extended code of two control channels; Distribute to when cyclic shift is carried out saltus step in the piece of control channel on the piece of interblock extended code effect, with the identical or integral translation of distributed and arranged of control channel in two pieces wherein, the identical or integral translation of the distributed and arranged of control channel in all the other pieces; The interference that can be implemented between the interior cyclic shift of piece on above-mentioned two pieces is identical; Interference in the piece on all the other pieces between the cyclic shift is also identical, can not destroy the interblock orthogonality between any two control channels that there is orthogonality relation in the corresponding symbol of interblock extended code, thereby when between the randomization control channel, disturbing in the piece; Satisfy the interblock quadrature, reduced inter-block-interference.Such as, the interblock extended code of two channels is the extended code that length equals 4, supposes it is respectively [1,1; 1,1], [1 ,-1; 1 ,-1], also there is orthogonality relation in these two interblock extended codes on the 1st symbol and the 2nd symbol so, so; When cyclic shift was carried out saltus step on 4 pieces in the piece, as long as guarantee these two channels at the 1st symbol and the 2nd piece that symbol is corresponding, promptly the interference between the cyclic shift was identical in the piece on the 1st piece and the 2nd piece, is assumed to be x
0, all the other pieces promptly in the piece on the 3rd piece and the 4th piece interference between the cyclic shift also identical, be assumed to be x
1, this two interchannels interference on a time slot is x so
0-x
0+ x
1-x
1=0, promptly, the interblock orthogonality between them is not destroyed yet.
Further; If two groups of control channels are arranged; All there is not orthogonality relation on the same group the interblock extended code of any two control channels forming on certain a part of symbol of extended code, distributes to when cyclic shift is carried out saltus step in the piece of control channel on the piece of interblock extended code effect/expansion, as long as guarantee on the piece of these symbol correspondences; The distribution of all control channels is identical on the two-dimension code plane of being made up of cyclic shift in interblock extended code and the piece; On remaining piece, on the said two-dimension code plane distribution of all control channels also identical, can not destroy not the interblock orthogonality of any two control channels on the same group.
The specific embodiment of the invention is described below; Wherein the present invention implements the sign indicating number method of salary distribution that first execution mode is 18 control channels; As shown in Figure 5: wherein use in having used 43 of cyclic shift in 12 pieces and interblock extended code simultaneously, concrete grammar is following:
The first step: give cyclic shift and interblock extended code in the control channel allocation block;
The control channel quantity of wherein distributing on each interblock extended code is 6, and the interior cyclic shift interval of piece that the identical control channel of interblock extended code distributes is greater than 1;
Second step: on second piece of interblock extended code effect and the 4th piece with the piece of control channel distribution in cyclic shift saltus step is set.
At this moment on the piece of the interblock extended code effect in crack, if cyclic shift is identical in the piece that two control channels distribute on first piece, cyclic shift is also identical in the piece that on second, the 3rd and the 4th piece, distributes to their so; If cyclic shift interval equals 1 in the piece that two control channels distribute on first and the 3rd piece in crack at this moment, promptly adjacent control channel so must be greater than 1 to cyclic shift interval in the piece of their distribution on second and the 4th piece.
Identical such as cyclic shift in, CH1 and the piece that CH13 distributes on first piece, cyclic shift is also identical in the piece that on second to the 4th piece, distributes to their; CH2 and CH7, CH8 first with the 3rd in the piece that distributes cyclic shift interval equal 1, second with the 4th piece on to the piece of their distribution in cyclic shift interval greater than 1.Be an example that distributes by this principle shown in Fig. 5 wherein, also have multiple other distribution to meet this requirement certainly.
The 3rd step,, that a time slot first is identical with the distributed and arranged distributed and arranged identical, second and the 4th middle control channel of the 3rd middle control channel according to the orthogonal property of interblock extended code.
The sequence length that wherein defines c1 to c4 extended code is 4, and satisfies characteristic:
C1=[1111]; C2=[11-1-1]; C3=[1-11-1]; C4=[1-1-11]; Or
c1＝[1111]；c2＝[1-1-11]；c3＝[1-11-1]；c4＝[11-1-1]
Wherein, be made as one group of c2 with the interblock extended code, the interblock extended code is be made as one group of c1 or c3; Because there are orthogonality relation in c1 and c2 on the 1st symbol and the 3rd symbol; Also there are orthogonality relation in c3 and c2 on the 1st symbol and the 3rd symbol, promptly all there is not orthogonality relation on the same group the interblock extended code of any two control channels on the 1st symbol and the 3rd symbol, therefore; The interior cyclic shift of piece of distributing to control channel is after carrying out saltus step on four pieces of interblock extended code effect; As long as guarantee on piece corresponding on the 1st symbol and the 3rd symbol, promptly on first piece and the 3rd piece, the distribution of all control channels is identical; Second with the 4th on the distribution of all control channels also identical, can not destroy not the interblock orthogonality of any two control channels on the same group.Such as CH1 and CH7, CH13 and CH7, CH1 and CH10, or the like.
First embodiment of the invention is under the situation of user terminal high-speed mobile; Because two continuous in time pieces are (such as first and second piece; The 3rd and the 4th piece) become less during upper signal channel, the interblock extended code of short quadrature orthogonal property between can better maintainance block under the situation of user terminal high-speed mobile, and distributed the control channel of cyclic shift in the same block can only rely on different interblock extended codes to distinguish; Thereby the short each other quadrature of the interblock extended code of distributing, like c1 and c3; The interblock extended code of distributing is the control channel of long quadrature each other, and cyclic shift interval in the piece is set to 1 at least, can distinguish through cyclic shift in the piece and the dual quadrature of interblock extended code between them like this.Because the interference in the influence of multidiameter delay, adjacent block between the cyclic shift is bigger, be 1 therefore for cyclic shift interval in the piece; It is adjacent control channel; In first and the 3rd,, in second and the 4th, make itself and CH2 no longer adjacent through the saltus step setting control channel CH7, CH8 like CH2 and CH7, CH8; Therefore can reduce or the randomization piece in the interference of cyclic shift, do not have to bring extra inter-block-interference simultaneously because of saltus step.
Second embodiment of the invention is as shown in Figure 6, and what they were different with first execution mode is:
In the 3rd step, according to the orthogonal property of interblock extended code, be integral translation with the distributed and arranged of control channel in first and the 3rd piece in the time slot, the distributed and arranged of control channel is integral translation in second and the 4th piece.Such as, among the figure in the 3rd piece the distribution of control channel be 6 displacements of integral translation of the distribution of control channel in first piece, the distribution of control channel is 6 displacements of integral translation of the distribution of control channel in second piece in the 4th piece.With CH2 and CH7, CH8 is example, and cyclic shift interval equals 1 in the piece that in first, distributes; Cyclic shift interval equals 5 in the piece of second middle CH2 and CH7, CH8; Though in the 3rd piece the distribution of control channel with respect to first piece in control channel distribution integral translation 6 displacements; But cyclic shift interval still equals 1 in the piece of CH2 and CH7, CH8; With the same in first piece, integral translation does not change the relative cyclic shift interval of interchannel; Cyclic shift interval equals 5 in the piece of CH2 and CH7, CH8 in the 4th piece, with the same in second piece.Be an example that distributes by this principle shown in Fig. 6 wherein, also have multiple other distribution to meet this requirement certainly.
The distributed and arranged that this execution mode is employed in control channel in first and the 3rd piece is integral translation; The distributed and arranged of control channel is integral translation in second and the 4th piece; And integral translation can not change the cyclic shift interval of interchannel, and therefore broken ring is on the same group the interblock orthogonality of any two control channels not.On the basis of first execution mode, increase a translation, can make a control channel on different pieces, experience cyclic shift in the more piece, the channel condition on cyclic shift in the different masses can obtain diversity gain not simultaneously.
Third embodiment of the invention is as shown in Figure 7, wherein compares with first execution mode, and the extended code of use increases to 4, and the identical control channel of interblock extended code is reduced to 4, is the distribution mode of above-mentioned 16 control channels, and its step is following:
The first step: give cyclic shift and interblock extended code in the control channel allocation block;
The control channel quantity of wherein distributing on each interblock extended code is 4, and the interior cyclic shift interval of piece that the identical control channel of interblock extended code distributes equals 2;
Second step: on second piece of interblock extended code effect and the 4th piece with the piece of control channel distribution in cyclic shift saltus step is set.
At this moment on the piece of the interblock extended code effect in crack, if cyclic shift is identical in the piece that two control channels distribute on first piece, cyclic shift is also identical in the piece that on second, the 3rd and the 4th piece, distributes to their so; If cyclic shift interval equals 1 in the piece that two control channels distribute on first and the 3rd piece in crack at this moment; It is adjacent control channel; And the interblock extended code of these two control channels does not satisfy short quadrature, and cyclic shift interval must be greater than 1 in the piece that on second and the 4th piece, distributes to them so.
Identical such as cyclic shift in, CH1 and the piece that CH13 distributes on first, cyclic shift is also identical in the piece that on second to the 4th piece, distributes to their; Cyclic shift interval equals 1 in the piece that CH2 and CH6 distribute on first piece; Cyclic shift interval is greater than 1 in the piece that on second, distributes to them; CH10 and CH15; Cyclic shift interval equals 1 in the piece that on first, distributes, and cyclic shift interval is greater than 1 in the piece that on second piece, distributes to them.Cyclic shift interval equals 1 in the piece that CH5 and CH9 distribute on first piece, but as long as their interblock extended code satisfies short quadrature, cyclic shift interval can equal 1 in the piece that on second, distributes to them.Be an example that distributes by this principle shown in Fig. 7 wherein, also have multiple other distribution to meet this requirement certainly.
The 3rd step,, that a time slot first is identical with the distributed and arranged distributed and arranged identical, second and the 4th middle control channel of the 3rd middle control channel according to the orthogonal property of interblock extended code.
The sequence length that wherein defines c1 to c4 extended code is 4, and satisfies characteristic:
C1=[1111]; C2=[11-1-1]; C3=[1-11-1]; C4=[1-1-11]; Or
c1＝[1111]；c2＝[1-1-11]；c3＝[1-11-1]；c4＝[11-1-1]
Wherein, With the interblock extended code is be made as one group of c2 or c4, and the interblock extended code is be made as one group of c1 or c3, because there are orthogonality relation in c1 and c2, c3 and c2, c1 and c4, c3 and c4 on the 1st symbol and the 3rd symbol; Promptly all there is not orthogonality relation on the same group the interblock extended code of any two control channels on the 1st symbol and the 3rd symbol; Therefore, distribute in the piece of control channel cyclic shift after carrying out saltus step on four pieces of interblock extended code effect, as long as guarantee on piece corresponding on the 1st symbol and the 3rd symbol; Be on first piece and the 3rd piece; The distribution of all control channels is identical, second with the 4th on the distribution of all control channels also identical, can not destroy not the interblock orthogonality of any two control channels on the same group.Such as CH2 and CH6, CH2 and CH9, CH10 and CH15, CH10 and CH3, or the like.
This execution mode of the present invention is compared with first execution mode, because of reducing the quantity of adjacent control channel, therefore more reduces the interference of adjacent control channel.
Four embodiment of the invention is as shown in Figure 8, and what they were different with the 3rd execution mode is:
In the 3rd step, according to the orthogonal property of interblock extended code, be integral translation with the distributed and arranged of control channel in first and the 3rd piece in the time slot, the distributed and arranged of control channel is integral translation in second and the 4th piece.Such as, among the figure in the 3rd piece the distribution of control channel be 6 displacements of integral translation of the distribution of control channel in first piece, the distribution of control channel is 6 displacements of integral translation of the distribution of control channel in second piece in the 4th piece.With CH2 and CH6, CH9 is example, and cyclic shift interval equals 1 in the piece that in first, distributes; Cyclic shift interval equals 5 in the piece of second middle CH2 and CH6, CH9; Though in the 3rd piece the distribution of control channel with respect to first piece in control channel distribution integral translation 6 displacements; But cyclic shift interval still equals 1 in the piece of CH2 and CH6, CH9; With the same in first piece, integral translation does not change the relative cyclic shift interval of interchannel; Cyclic shift interval equals 5 in the piece of CH2 and CH6, CH9 in the 4th piece, with the same in second piece.Be an example that distributes by this principle shown in Fig. 8 wherein, also have multiple other distribution to meet this requirement certainly.
This execution mode increases a translation on the basis of the 3rd execution mode, can make a control channel on different pieces, experience cyclic shift in the more piece, and the channel condition on cyclic shift in the different masses can obtain diversity gain not simultaneously.
Fifth embodiment of the invention is as shown in Figure 9, and what they were different with the 3rd execution mode is:
Wherein, With the interblock extended code is be made as one group of c1 or c4, and the interblock extended code is be made as one group of c2 or c3, because there are orthogonality relation in c1 and c2, c1 and c3, c4 and c2, c4 and c3 on the 1st symbol and the 4th symbol; Promptly all there is not orthogonality relation on the same group the interblock extended code of any two control channels on the 1st symbol and the 4th symbol; Therefore, distribute in the piece of control channel cyclic shift after carrying out saltus step on four pieces of interblock extended code effect, as long as guarantee on piece corresponding on the 1st symbol and the 4th symbol; Be on first piece and the 4th piece; The distribution of all control channels is identical, second with the 3rd on the distribution of all control channels also identical, can not destroy not the interblock orthogonality of any two control channels on the same group.Such as CH2 and CH6, CH2 and CH9, CH10 and CH15, CH10 and CH3, or the like.
This execution mode of the present invention is compared with first execution mode, because of reducing the quantity of adjacent control channel, therefore more reduces the interference of adjacent control channel.
In like manner; On the basis of the 5th execution mode, increase a translation in sixth embodiment of the invention; Promptly according to the orthogonal property of interblock extended code; With the distributed and arranged of control channel in first and the 3rd piece in the time slot is integral translation, and the distributed and arranged of control channel is integral translation in second and the 4th piece.
Seventh embodiment of the invention is shown in figure 10, and it is compared with first execution mode, and the interblock extended code of use is increased to 4, and therefore the control channel of code division multiplexing can increase to 24 on a public running time-frequency resource, and concrete grammar is following:
The first step: give cyclic shift and interblock extended code in the control channel allocation block;
The control channel quantity of wherein distributing on each interblock extended code is 6, and the interior cyclic shift interval of piece that the identical control channel of interblock extended code distributes is greater than 1;
Second step: on second piece of interblock extended code effect and the 4th piece with the piece of control channel distribution in cyclic shift saltus step is set.
At this moment on the piece of the interblock extended code effect in crack, if cyclic shift is identical in the piece that two control channels distribute on first piece, cyclic shift is also identical in the piece that on second, the 3rd and the 4th piece, distributes to their so; If cyclic shift interval equals 1 in the piece that two control channels distribute on first and the 3rd piece in crack at this moment, promptly adjacent control channel so must be greater than 1 to cyclic shift interval in the piece of their distribution on second and the 4th piece.
Identical such as cyclic shift in, CH1 and the piece that CH13 distributes on first piece, cyclic shift is also identical in the piece that on second to the 4th piece, distributes to their; CH2 and CH7, CH8, CH19, CH20 first with the 3rd in the piece that distributes cyclic shift interval equal 1, second with the 4th piece on to the piece of their distribution in cyclic shift interval greater than 1.Be an example that distributes by this principle shown in Figure 10 wherein, also have multiple other distribution to meet this requirement certainly.
The 3rd step,, that a time slot first is identical with the distributed and arranged distributed and arranged identical, second and the 4th middle control channel of the 3rd middle control channel according to the orthogonal property of interblock extended code.
The sequence length that wherein defines c1 to c4 extended code is 4, and satisfies characteristic:
C1=[1111]; C2=[11-1-1]; C3=[1-11-1]; C4=[1-1-11]; Or
c1＝[1111]；c2＝[1-1-11]；c3＝[1-11-1]；c4＝[11-1-1]
Wherein, With the interblock extended code is be made as one group of c2 or c4, and the interblock extended code is be made as one group of c1 or c3, because there are orthogonality relation in c1 and c2, c3 and c2, c1 and c4, c3 and c4 on the 1st symbol and the 3rd symbol; Promptly all there is not orthogonality relation on the same group the interblock extended code of any two control channels on the 1st symbol and the 3rd symbol; Therefore, distribute in the piece of control channel cyclic shift after carrying out saltus step on four pieces of interblock extended code effect, as long as guarantee on piece corresponding on the 1st symbol and the 3rd symbol; Be on first piece and the 3rd piece; The distribution of all control channels is identical, second with the 4th on the distribution of all control channels also identical, can not destroy not the interblock orthogonality of any two control channels on the same group.Such as CH1 and CH7, CH13 and CH7, CH1 and CH19, or the like.
This execution mode and the first execution mode comparison have increased the quantity of control channel.
Eighth embodiment of the invention is shown in figure 11, and what they were different with the 7th execution mode is:
In the 3rd step, according to the orthogonal property of interblock extended code, be integral translation with the distributed and arranged of control channel in first and the 3rd piece in the time slot, the distributed and arranged of control channel is integral translation in second and the 4th piece.Such as, among the figure in the 3rd piece the distribution of control channel be 6 displacements of integral translation of the distribution of control channel in first piece, the distribution of control channel is 6 displacements of integral translation of the distribution of control channel in second piece in the 4th piece.With CH2 and CH7, CH8, CH19, CH20 is example, and cyclic shift interval equals 1 in the piece that in first, distributes; Cyclic shift interval equals 5 in the piece of second middle CH2 and CH7, CH8, CH19, CH20; Cyclic shift interval equals 1 in the piece of CH2 and CH7, CH8, CH19, CH20 in the 3rd piece, with the same in first piece; Cyclic shift interval equals 5 in the piece of CH2 and CH7, CH8, CH19, CH20 in the 4th piece, with the same in second piece.Be an example that distributes by this principle shown in Figure 11 wherein, also have multiple other distribution to meet this requirement certainly.
Nineth embodiment of the invention is shown in figure 12, and wherein different with the 8th execution mode is:
In second step, on second piece of interblock extended code effect and the 4th piece with the piece of control channel distribution in cyclic shift saltus step is set.
At this moment on the piece of the interblock extended code effect in crack, if cyclic shift is identical in the piece that two control channels distribute on first piece, cyclic shift is also identical in the piece that on second, the 3rd and the 4th piece, distributes to their so; Not only make the control channel that cyclic shift interval equals 1 in the piece that on first, distributes; Cyclic shift interval is greater than 1 in the piece that on second piece, distributes, and makes part distribute that saltus step also takes place cyclic shift interval in the piece of control channel on different masses of extended code between same block further.
Identical such as cyclic shift in, CH1 and the piece that CH13 distributes on first piece, cyclic shift is also identical in the piece that on second to the 4th piece, distributes to their; CH2 and CH7, CH8, CH19, CH20 first with the 3rd in the piece that distributes cyclic shift interval equal 1, second with the 4th piece on to the piece of their distribution in cyclic shift interval greater than 1; CH2 and CH1, CH3, CH13, CH15 first with the 3rd in the piece that distributes cyclic shift interval equal 2, second with the 4th piece on to the piece of their distribution in cyclic shift interval greater than 2.Be an example that distributes by this principle shown in Figure 12 wherein, also have multiple other distribution to meet this requirement certainly.
This execution mode and the 8th execution mode comparison, more the interference of cyclic shift has realized randomization in the piece between the multichannel.
Tenth embodiment of the invention is shown in figure 13, and wherein different with first execution mode is: the control channel distribution mode is different, wherein uses 6 in the cyclic shift in 12 pieces simultaneously, has distributed the control channel of cyclic shift in the same block to have 3.
In second step; Cyclic shift interval is more than or equal to 2 in the piece that the control channel that makes on first identical the and interblock extended code of cyclic shift in the piece that distributes not satisfy short quadrature distributes on second piece, can make part distribute that saltus step also takes place cyclic shift interval in the piece of control channel on different masses of extended code between same block simultaneously.
In like manner; In the tenth execution mode, can also increase a translation; Promptly in the 3rd step; According to the orthogonal property of interblock extended code, be integral translation with the distributed and arranged of control channel in first and the 3rd piece in the time slot, the distributed and arranged of control channel is integral translation in second and the 4th piece.
This shows; Embodiment of the present invention is under the situation of user terminal high-speed mobile; Adopt extended code between allocation block to disturb, and be 1, promptly adjacent control channel for cyclic shift interval in the piece for the mode of short quadrature reduces between the control channel that cyclic shift is identical in the piece; Through always not adjacent on the piece that any two control channels all transmission data in a time slot are set; Promptly on different pieces, adopt the distribution method of saltus step for adjacent control channel, under the situation of user terminal high-speed mobile, the interference between the control channel of minimizing or randomization interblock expansion code length quadrature as far as possible.And according to execution mode of the present invention, do not influence user terminal translational speed orthogonality between each control channel when low.
In a word, under the situation of user terminal high-speed mobile,, made the interference randomization between the ascending control channel of code division multiplexing on the public running time-frequency resource through the method for cyclic shift saltus step in the piece.This scheme does not influence user terminal translational speed orthogonality between each control channel when low simultaneously.
Figure 14 is the system schematic of the sign indicating number distribution of ascending control channel of the present invention; Wherein said system comprises base station 10 and user terminal 20; Wherein this base station 10 comprises a memory cell 101, a control module 102 and a detecting unit 103; Wherein memory cell 101 is used to store the distribution of control channel; Wherein said control channel is distributed on the two-dimension code plane of interior cyclic shift of piece and interblock extended code composition, and the interblock extended code satisfies quadrature on the part symbol of forming extended code; Control module 102 is used for being provided with the distribution of memory cell 101 control channels; Wherein based on the orthogonal property of interblock extended code; On at least one piece with cyclic shift interblock extended code effect in a time slot in the piece of control channel distribution saltus step is set, makes the distributed and arranged of the control channel at least two pieces different; And with the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation;
User terminal 20 comprises a memory cell 201, a control module 202 and a transmitter unit 203; Wherein memory cell 201 is used to store the distribution of control channel; Wherein said control channel is distributed on the two-dimension code plane of interior cyclic shift of piece and interblock extended code composition, and the interblock extended code satisfies quadrature on the part symbol of forming extended code; Control module 202 is used for being provided with the distribution of memory cell 201 control channels; Wherein based on the orthogonal property of interblock extended code; On at least one piece with cyclic shift interblock extended code effect in a time slot in the piece of control channel distribution saltus step is set, makes the distributed and arranged of the control channel at least two pieces different; And with the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation;
Wherein transmitter unit 203 is used for utilizing its upstream control signaling of sign indicating number emission of user terminal control channel distribution; Said detecting unit 103 is used to receive said upstream control signaling, and detects the upstream control signaling of user terminal according to the sign indicating number that the ascending control channel of user terminal distributes.
Wherein above-mentioned control channel be distributed as the distribution in above-mentioned the first to the 11 execution mode, this repeats no more.
Though through reference some preferred implementation of the present invention; The present invention is illustrated and describes; But those of ordinary skill in the art should describedly understand, can do various changes to it in form with on the details, and without departing from the spirit and scope of the present invention.
Claims (20)
1. the method for the sign indicating number distribution of an ascending control channel is characterized in that, comprises following steps:
Give cyclic shift and interblock extended code in the control channel allocation block;
On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel is assigned to, makes the distributed and arranged of the control channel at least two pieces different;
Orthogonal property according to the interblock extended code; With the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation, and wherein orthogonal property is meant that the interblock extended code of two control channels satisfies quadrature on certain a part of symbol of forming extended code.
2. the method for the sign indicating number distribution of ascending control channel as claimed in claim 1 is characterized in that,
Relation below cyclic shift satisfies in interblock extended code that above-mentioned control channel is assigned to and the piece:
Cyclic shift interval is greater than 1 in the piece between the identical control channel of interblock extended code.
3. the method for the sign indicating number distribution of ascending control channel as claimed in claim 2 is characterized in that,
Interblock extended code between the control channel that cyclic shift is identical in the piece satisfies short quadrature; Its short-and-medium quadrature is meant the orthogonal sequence that two 2N are long; On the top n continuous symbol, satisfy quadrature, on N the continuous symbol in back, also satisfy quadrature, wherein N is the integer greater than 1.
4. the method for the sign indicating number distribution of ascending control channel as claimed in claim 3 is characterized in that,
On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the said piece that control channel is assigned to and is meant two control channels; If cyclic shift interval equals 1 in the piece that in a time slot, distributes on certain piece of interblock extended code effect, cyclic shift interval is greater than 1 in the piece that then on other at least one pieces of said interblock extended code effect, distributes.
5. the method for the sign indicating number distribution of ascending control channel as claimed in claim 4 is characterized in that,
Distributed on a piece of interblock extended code effect that the control channel of cyclic shift also is provided with cyclic shift in the identical piece in the same block on other piece of interblock extended code effect.
6. like yard method of distributing of any one described ascending control channel of claim 1 to 5, it is characterized in that the sequence length of interblock extended code is 4, said extended code is:
C1=[1111]; C2=[11-1-1]; C3=[1-11-1]; C4=[1-1-11]; Or
c1＝[111-1]；c2＝[11-11]；c3＝[1-111]；c4＝[-1111]。
7. the sign indicating number of the ascending control channel as claimed in claim 6 method of distributing; It is characterized in that in a time slot, comprising 7 pieces that are used to transmit; Wherein 3 pieces are used to transmit pilot tone, 4 pieces are used to transmit data, and at least one piece of interblock extended code effect is that at least one of interblock extended code effect is used for transmitting the piece of pilot tone or at least one of time slot interblock extended code effect is used to transmit the piece of data in the time slot in the wherein said time slot.
8. the sign indicating number of the ascending control channel as claimed in claim 7 method of distributing; It is characterized in that; According to the orthogonal property of above-mentioned c1, c2, c3, c4, the distributed and arranged that can the piece and the 3rd that first of extended code effect in the time slot is used to transmit data be used to transmit the control channel on the piece of data is identical or integral translation; Or the distributed and arranged of the piece that first of extended code effect in the time slot is used to transmit data and the control channel of four-function on the piece of transmission data is identical or integral translation.
9. like yard method of distributing of any one described ascending control channel of claim 1 to 5, it is characterized in that,
When the control channel quantity of distributing on each interblock extended code was 6, the interblock extended code was 3 or 4;
When the control channel quantity of distributing on each interblock extended code was 4, the interblock extended code was 3 or 4.
10. the sign indicating number assigned unit of an ascending control channel is characterized in that, comprise,
Memory cell, the distribution that is used to store control channel, wherein said control channel is distributed on the two-dimension code plane of interior cyclic shift of piece and interblock extended code composition, and the interblock extended code satisfies quadrature on the part symbol of forming extended code;
Control unit; Be used for being provided with the distribution of memory cell control channel; Wherein according to the orthogonal property of interblock extended code; On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel is assigned to, makes the distributed and arranged of the control channel at least two pieces different; And with the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation.
11. the sign indicating number assigned unit of ascending control channel as claimed in claim 10 is characterized in that cyclic shift interval is greater than 1 in the piece between the control channel that the interblock extended code is identical in the said memory cell.
12. the sign indicating number assigned unit of ascending control channel as claimed in claim 11; It is characterized in that; On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel distributes in the said control unit and is meant two control channels; If cyclic shift interval equals 1 in the piece that in a time slot, distributes on certain piece of interblock extended code effect, cyclic shift interval is greater than 1 in the piece that then on other at least one pieces of said interblock extended code effect, distributes.
13. the sign indicating number assigned unit of ascending control channel as claimed in claim 12 is characterized in that,
Said control unit has distributed on a piece of interblock extended code effect that the control channel of cyclic shift also is provided with cyclic shift in the identical piece in the same block on other piece of interblock extended code effect.
14. the sign indicating number assigned unit like any one described ascending control channel of claim 10 to 13 is characterized in that the sequence length of interblock extended code is 4, said extended code is:
C1=[1111]; C2=[11-1-1]; C3=[1-11-1]; C4=[1-1-11]; Or
c1＝[111-1]；c2＝[11-11]；c3＝[1-111]；c4＝[-1111]。
15. the sign indicating number assigned unit like any one described ascending control channel of claim 10 to 13 is characterized in that, the sign indicating number assigned unit of said ascending control channel is base station or user terminal.
16. the system that the sign indicating number of an ascending control channel distributes is characterized in that, comprises,
The base station comprises first memory cell, first control unit and detecting unit;
User terminal comprises second memory cell, second control unit and transmitter unit,
Wherein first memory cell and second memory cell distribution that is used to store control channel; Wherein said control channel is distributed on the two-dimension code plane of interior cyclic shift of piece and interblock extended code composition, and the interblock extended code satisfies quadrature on the part symbol of forming extended code;
Wherein first control module and second control module are used for being provided with respectively the distribution of first memory cell and the second memory cell control channel; Wherein based on the orthogonal property of interblock extended code; On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel is assigned to, makes the distributed and arranged of the control channel at least two pieces different; And with the distributed and arranged of the control channel at least two pieces of interblock extended code effect in the time slot is identical or integral translation;
Wherein transmitter unit is used for utilizing its upstream control signaling of sign indicating number emission of user terminal control channel distribution; Said detecting unit is used to receive said upstream control signaling, and detects the upstream control signaling of user terminal according to the sign indicating number that the ascending control channel of user terminal distributes.
17. the system that the sign indicating number of ascending control channel as claimed in claim 16 distributes is characterized in that, the interior cyclic shift interval of piece between the control channel that the interblock extended code is identical in said first memory cell and second memory cell is greater than 1.
18. the system that the sign indicating number of ascending control channel as claimed in claim 17 distributes; It is characterized in that; On at least one piece of cyclic shift interblock extended code effect in a time slot saltus step is set in the piece that control channel distributes in said first control unit and second control unit and is meant two control channels; If cyclic shift interval equals 1 in the piece that in a time slot, distributes on certain piece of interblock extended code effect, cyclic shift interval is greater than 1 in the piece that then on other at least one pieces of said interblock extended code effect, distributes.
19. the system that the sign indicating number of ascending control channel as claimed in claim 18 distributes is characterized in that,
Said first control unit has distributed on a piece of interblock extended code effect with second control unit that the control channel of cyclic shift also is provided with cyclic shift in the identical piece in the same block on other piece of interblock extended code effect.
20. yard system that distributes like any one described ascending control channel of claim 16 to 19 is characterized in that the sequence length of said interblock extended code is 4, said extended code is:
C1=[1111]; C2=[11-1-1]; C3=[1-11-1]; C4=[1-1-11]; Or
c1＝[111-1]；c2＝[11-11]；c3＝[1-111]；c4＝[-1111]。
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