CN101287282A - Method and apparatus for transmitting control signalling - Google Patents
Method and apparatus for transmitting control signalling Download PDFInfo
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- CN101287282A CN101287282A CNA2007101005816A CN200710100581A CN101287282A CN 101287282 A CN101287282 A CN 101287282A CN A2007101005816 A CNA2007101005816 A CN A2007101005816A CN 200710100581 A CN200710100581 A CN 200710100581A CN 101287282 A CN101287282 A CN 101287282A
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Abstract
The embodiment of the invention discloses a method for transferring the control signaling. In the method of the invention, the control signaling is transferred by being collectively carried in the top n symbols of the first downlink subframe and n is an integer which is more than or equal to 1 and less than or equal to 9 and can be adjusted dynamically. The embodiment of the invention also discloses a device for transferring the control signaling and the device comprises a subframe constructing module and a sending module, wherein, the subframe constructing module is used for carrying the control signaling in the top n symbols of the first downlink subframe and n is an integer which is more than or equal to 1 and less than or equal to 9 and can be adjusted dynamically and the first downlink subframe is sent by the sending module; the sending module is used for sending the first downlink subframe which carries the control signaling in top n symbols. By adopting the method of the invention, the overhead for transferring the control signaling can be reduced and the highly-effective transferring of the control signaling can be realized.
Description
Technical field
The present invention relates to wireless communication technology, particularly the method for control channel and device.
Background technology
At present, insert at third generation partner program (3GPP) evolution global radio in the downlink transfer of (E-UTRA, Evolved Universal Terrestrial Radio Access) system, adopt OFDM (OFDM) technology as multi-access mode.The OFDM technology is a kind of multi-carrier communication technology.
In multi-carrier communications systems, by distributing different running time-frequency resources to realize multiuser multiplexing for different user terminals (UE); Be that the concrete resource of distributing of UE then need be notified UE by the control signaling.In order to realize efficient, correct transmission, the expense of control signaling and control signaling residing position in frame just become vital problem.
Fig. 1 is the frame structure schematic diagram of radio frames in existing Long Term Evolution plan (LTE) system.Referring to Fig. 1, in the LTE system, the radio frames of one 10 milliseconds (ms) is divided into the radio half frame of two 5ms, each radio half frame comprise 7 common time slots (TS0～TS6) and 3 special time slots (DwPTS, GP and UpPTS), the length of each time slot (being also referred to as subframe) is 0.675ms; The corresponding descending respectively and uplink synchronous time slot of DwPTS and UpPTS, GP is guard time interval between up-downgoing, DwPTS, UpPTS and GP are inserted between TS0 and the TS1; Each time slot comprises a little idling cycle, can be used as the protection period that up-downgoing is switched.In the LTE system, each subframe comprises 9 symbols, and each symbol is corresponding to the experimental process carrier wave, and each subcarrier can transmit a modulation symbol.
Because the LTE system is a kind of system that can be operated under FDD and these two kinds of dual-modes of TDD, therefore, has both needed to provide the scheme of control channel under the fdd mode, also needs to provide the scheme of control channel under the tdd mode.
At present, based on frame structure shown in Figure 1, LTE has been proposed in the method for control channel under the fdd mode.This method control channel all in each descending sub frame, and the control signaling dynamically takies first three symbol in each descending sub frame.The present inventor finds: above-mentioned under fdd mode control channel method and be not suitable for tdd mode.This be because: such scheme is not considered the characteristic of TDD system, promptly within the field of 5ms for once the scheduling chance, so control signaling there is no need to be dispersed among each descending sub frame; And, owing in each descending sub frame the control signaling is arranged all, thereby need UE that each descending sub frame is carried out continuous detecting, this is unfavorable for saving terminal resource and is the terminal power saving.
The method that also has a kind of control channel in the prior art.This method was included in by lg electronics in 26 days-March 30 March in 2007, in the 48th meeting of wireless access network working group of 3GPP technical specification portion that the St-Julien of Malta is held, (E-UTRA Downlinkcontrol signaling aspects for TDD system among " the TDD system gets the down control channel structure in the general land wireless access technology of the evolution " R1-071750 that is proposed, CATT, 3GPP TSG RAN WG1Meeting#48, St Julians, Malta, 26 March-30 March, 2007).
In the above-mentioned motion, proposed a kind ofly will control the scheme that signaling all is carried on first descending sub frame.Fig. 2 will control the structural representation that signaling all is carried on first descending sub frame for existing.Referring to Fig. 2, laterally represent time domain, vertically represent frequency domain.This method is divided into the control Resource Block (CRU) that least unit is 6 subcarrier * 3 symbols with control channel, a control channel, and the Dedicated Control Channel of promptly dividing into groups (PDCCH) is made up of several CRU.In this scheme, the descending sub frame of control channel is not used further to service data transmission, and all is used for control channel, according to calculating, supports that probably 20～24 uplink and downlink users are right.
The present inventor finds: according to calculating and emulation, when bandwidth of cell is 5 megahertzes (MHz), when the right number of user is 15, use the sub-district of such scheme that bigger throughput is arranged, therefore, there is wasting of resources to a certain degree in this scheme, and the number of users of promptly supporting scheduling approximately is 1.3～1.6 times of optimal scheduling number of users, probably like this has 2～4 symbols and is wasted.
Therefore, the present inventor thinks needs to propose a kind of scheme of control channel more efficiently, to reduce the required expense of control channel.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method of control channel, to reduce the required expense of control channel.
The embodiment of the invention also provides a kind of device of control channel, to reduce the required expense of control channel.
The technical scheme of the embodiment of the invention specifically is achieved in that
A kind of method of control channel, this method will be controlled in preceding n the symbol that signaling is carried on first descending sub frame and transmit, and described n is: more than or equal to 1, and smaller or equal to the integer of 9 dynamic adjustment.
A kind of device of control channel comprises: subframe constructing module and sending module;
Described subframe constructing module is used for the control signaling is carried on preceding n symbol of first descending sub frame, and described n is: more than or equal to 1, and smaller or equal to the integer of 9 dynamic adjustment; And described first descending sub frame sent by sending module;
Described sending module, n symbol carries first descending sub frame of controlling signaling before being used for being sent in.
As seen from the above technical solution, in the scheme of the control channel that the embodiment of the invention provided, concentrate in preceding n the symbol being carried on first descending sub frame and transmit by controlling signaling.So,, can effectively avoid the wasting of resources, reach the purpose that reduces the required expense of control channel, thereby realize controlling efficiently the signaling transmission because the control signaling only takies preceding n symbol of first descending sub frame.
Description of drawings
Fig. 1 is the frame structure schematic diagram of radio frames in the existing LTE system.
Fig. 2 will control the structural representation that signaling all is carried on first descending sub frame for existing.
Fig. 3 shows the structural representation that carries the control signaling in a preferred embodiment of the present invention in first descending sub frame.
Fig. 4 is the schematic flow sheet of the method for control channel in the embodiment of the invention one.
Fig. 5 shows the structural representation that carries the control signaling in the embodiment of the invention one in first descending sub frame.
Fig. 6 is the schematic flow sheet of the method for control channel in the embodiment of the invention two.
Fig. 7 shows the structural representation that carries the control signaling in the embodiment of the invention two in first descending sub frame.
Fig. 8 is a structural representation of pressing frequency separation controll block in the embodiment of the invention two.
Fig. 9 presses the structural representation that time-frequency two dimension standard is distinguished controll block in the embodiment of the invention two.
Figure 10 is the composition structural representation of the device of control channel in the preferred embodiment of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
A kind of method of control channel is provided in the embodiment of the invention, and this method will be controlled in preceding n the symbol that signaling is carried on first descending sub frame and transmit.Wherein, n is control signaling shared symbolic number, and the size of n value can be more than or equal to 1, and smaller or equal to dynamically adjustment between 9 the integer.
Preferably, the concrete value of n can be by control signaling Cat0 notice UE; And remaining in first descending sub frame (9-n) individual symbol can be used to transmit data.
Fig. 3 shows the structural representation that carries the control signaling in a preferred embodiment of the present invention in first descending sub frame.Referring to Fig. 3, in this preferred embodiment, first descending sub frame is the 8th subframe (TS4), the control signaling is carried in preceding n the symbol among the TS4, and utilizes symbol transmission data except that controlling the shared n of a signaling symbol.
In above-mentioned first descending sub frame, the distribution mode of control signaling can be consistent with FDD scheme among the existing LTE, be that each control channel PDCCH is by some control channel piece (CCE, control channelelement) forms, each CCE comprises some Resource Block (RE, resource element), each CCE is across all symbols in this control signaling, to obtain bigger power control adjusting range.
Because the control signaling at most only takies preceding n symbol of first descending sub frame, for remaining symbol, can handle in the following manner:
Can the resource that the next subframe of first descending sub frame of running time-frequency resource and this except that the control shared symbol of signaling (being the time-frequency resource) in first descending sub frame is corresponding merge, by network side the resource of this merging is dispatched jointly, in the symbol of this merging, transmit data;
Perhaps, also the running time-frequency resource except that control signaling shared running time-frequency resource in first descending sub frame data can be transmitted separately, n control signaling that symbol comprised before this first descending sub frame can be placed about the control signaling of this a part of running time-frequency resource.
Further, the control signaling that the embodiment of the invention comprised is except that the control signaling of the present defined of LTE, can also be provided for representing the indication that exists data to transmit in the combination of subframe or subframe, and the corresponding relation of the combination and the indication of subframe or subframe is set; When there is transfer of data in the combination of subframe or subframe, the indication corresponding with the combination of described subframe or subframe is carried in the control signaling.
Preferably, this indication can be made of bit mapping (bitmap) mode.For example, suppose to comprise in the control signaling the control signaling of user a corresponding to TS5, if user a all exists data to need transmission at TS5, TS6 and TS0, then in the control signaling except that the control signaling that can carry corresponding to TS5, can also represent that this user also exists data to need to transmit at TS6 and TS0 with the bitmap mode of 3 bits (for example 111).Here, TS6 and TS0 are exactly the combination of above-mentioned subframe, and indication 111 is exactly the indication corresponding to this combination.For above-mentioned TS6 and TS0, the time-frequency position of concrete transmission can be determined by the mode of making an appointment; Its frequency can be identical with the frequency transmitted among the TS5, also can be according to certain mode frequency hopping of making an appointment.
As seen from the above-described embodiment, the embodiment of the invention is concentrated in preceding n the symbol being carried on first descending sub frame and is transmitted by controlling signaling, and dynamically adjusts the value of n according to the size of control signaling, thereby the shared symbolic number of signaling is controlled in adjustment.Because the control signaling only takies preceding n symbol of first descending sub frame, can effectively avoid the wasting of resources, reaches the purpose that reduces the required expense of control channel, thereby realized controlling efficiently the signaling transmission.
And the FDD scheme among the scheme of the disclosed control channel of the embodiment of the invention and the existing LTE has favorable compatibility.This be because, in the technical scheme that the embodiment of the invention provided, can take with existing LTE in the on all four control signaling of FDD scheme distribution mode handle in first descending sub frame the distribution of control signaling, so both are compatible fully, need not to relate to again the structure of control channel.
In addition, the technical scheme that the embodiment of the invention provided will be controlled signaling and concentrate and to be carried in first descending sub frame, and therefore, UE only need detect once, and other times can enter resting state, thereby reach power saving, reduce the purpose of signaling consumption.
The embodiment of the invention provides two kinds of preferred mode based on technique scheme, and the control signaling is carried in the symbol of preceding n of first descending sub frame.
Wherein, a kind of mode is: set in advance the step-length that described n dynamically adjusts, and be unit with set step-length, the control signaling is carried in the integral multiple symbol of preceding step-length of first descending sub frame.
Another kind of mode is: m independently controll block is set, and controll block is set and the corresponding relation of the subframe that is scheduled; The control signaling of the subframe that is scheduled is carried in the controll block corresponding with the described subframe that is scheduled; Controll block is carried in preceding n the symbol of first descending sub frame and transmits.
Respectively above-mentioned two kinds of preferred mode are further described below by two preferred embodiments.
Embodiment one:
Fig. 4 is the schematic flow sheet of the method for control channel in the embodiment of the invention one.Referring to Fig. 4, this method may further comprise the steps:
Step 401: the step-length that n dynamically adjusts is set.
This step is provided with the step-length that n dynamically adjusts.The value of step-length can be for 1, the integer between the 2......9.For example, when set step-length is 2, the control signaling will be a step-length with 2 symbols, take preceding " 2 integral multiples " individual symbol of first descending sub frame.But the shared symbol of control signaling is an integral body, is not that unit is distinguished the shared symbol of control signaling with the step-length.
Step 402: with the set step-length of step 401 is unit, and the control signaling is carried in preceding " integral multiple of step-length " individual symbol of first descending sub frame.
In this step, the step-length that can dynamically adjust according to the n that sets in advance is carried on the control signaling in the integral multiple symbol of preceding step-length of first descending sub frame.Wherein, the concrete value of n can be by control signaling Cat0 notice UE.
Fig. 5 shows the structural representation that carries the control signaling in the embodiment of the invention one in first descending sub frame.Referring to Fig. 5, in this preferred embodiment, first descending sub frame is TS4, and set step-length is 1, and the control signaling takies preceding 4 symbols of first descending sub frame.Running time-frequency resource among the TS4 except that the shared running time-frequency resource of down control channel can be used to transmit data.
As previously mentioned, in the present embodiment control signaling distribution mode also can take with existing LTE in the consistent mode of FDD scheme.In first descending sub frame, the symbol except that the shared symbol of control signaling also can take foregoing dual mode to handle, and does not repeat them here.
In the present embodiment, also can be provided for representing the indication that exists data to transmit in the combination of subframe or subframe according to foregoing mode, and when there is transfer of data in the combination of subframe or subframe, the indication corresponding with the combination of described subframe or subframe is carried in the control signaling.
So far, finish the method flow of present embodiment control channel.
As seen from the above-described embodiment, the technical scheme that present embodiment provided not only can signaling is concentrated to be carried in preceding n the symbol of first descending sub frame by controlling, reach the purpose that reduces the required expense of control channel, and, can realize with existing LTE in the compatibility of FDD scheme, can also be reached for the terminal purpose of power saving.
Further, in the technical scheme that present embodiment provided, introduce the notion of step-length and dynamically adjusted the shared symbolic number of control signaling, and described step-length can dynamically arrange as required, like this can be according to the needs of practical application, adjust the shared symbolic number of control signaling, economize on resources effectively.
Embodiment two:
Fig. 6 is the schematic flow sheet of the method for control channel in the embodiment of the invention two.Referring to Fig. 6, this method may further comprise the steps:
Step 601: m independently controll block is set, and controll block is set and the corresponding relation of the subframe that is scheduled.
In this step, be 7 by be scheduled the as can be known maximum number of subframe of wireless frame structure shown in Figure 1, therefore, preferably, the piecemeal number m of controll block can be any one in the integer 1 to 7.And the size of each controll block can dynamically be adjusted, and preferably, according to the symbolic number in present each subframe, its adjusting range can be: more than or equal to 1, and smaller or equal to an integer symbol of 9.Along with the continuous development of communication protocol, if number of symbols changes in the subframe, then the dynamic adjusting range of controll block size also can change according to actual needs accordingly.The concrete size of each controll block can be notified UE by control signaling relevant in each controll block, for example, can notify UE with the Cat0 in each controll block.
In this step, before the piecemeal number of determining controll block, can also determine the pair relationhip of subframe further according to proportion of ascending subframe and descending subframe in the frame structure; And determine the piecemeal number of controll block according to the number of this pair relationhip.When the pair relationhip of subframe is set, can constitutes the pairing of a subframe with any one subframe or any two subframes, and resulting subframe pairing is defined as the pair relationhip of subframe.For example, when proportion of ascending subframe and descending subframe in the frame structure was 3: 4, first descending sub frame was TS4, preferably, subframe can be matched in twos, and set subframe pair relationhip can be:
TS5 and TS1 form a subframe pairing, TS6 and TS2 and form a subframe pairing, TS0 and subframe pairing of TS3 composition;
Therefore, the piecemeal number m that controll block can be set is 3.
Again for example, when proportion of ascending subframe and descending subframe in the frame structure was 6: 1, first descending sub frame was: the 1st subframe (TS0), and set subframe pair relationhip can be:
TS1 and TS2 form a subframe pairing, and TS3, TS4, TS5, TS6 form a subframe pairing respectively separately;
At this moment, have 5 subframe pairings, therefore, the piecemeal number that controll block can be set is 5.
In this step, can controll block be set and the corresponding relation of the subframe that is scheduled according to above-mentioned subframe pair relationhip, particularly, each controll block can be corresponding to the subframe that belongs to the same sub pair relationhip.
With proportion of ascending subframe and descending subframe in the above-mentioned frame structure is 3: 4 the example that is exemplified as, and 3 controll blocks are designated as controll block 1, controll block 2 and controll block 3 respectively, in these 3 controll blocks with the corresponding relation (being also referred to as the pairing mapping relations) of the subframe that is scheduled can for:
Controll block 2＜-TS6+TS2
Above-mentioned corresponding relation is represented: 3 controll blocks correspond respectively to TS5 and TS1, TS6 and TS2, TS0 and TS3.Wherein, the control signaling in the controll block 1 is the control signaling at TS5 and TS1, and the control signaling in the controll block 2 is the control signaling at TS6 and TS2, and the control signaling in the controll block 3 is the control signaling at TS3 and TS0.This pairing mapping mode is 3: 4 o'clock at ascending-descending subframes just, and preferable a kind of pairing mapping mode in actual applications, is not got rid of the situation of any two subframes pairing certainly yet.
When proportion of ascending subframe and descending subframe in the frame structure was 4: 3, first descending sub frame was: the 9th subframe (TS5).The same with last example, 3 controll blocks also can be set, the control signaling that is comprised in 3 controll block corresponds respectively to TS4 and TS1, TS6 and TS2, TS0 and TS3.Certainly, this pairing mapping mode is 4: 3 o'clock at ascending-descending subframes just also, and preferable a kind of pairing mapping mode in actual applications, is not got rid of the situation of any two subframes pairing yet.
Since when the proportioning of ascending-descending subframes not simultaneously, first descending sub frame is different, and the subframe of control channel is not participate in above-mentioned pairing mapping, therefore, when the proportioning of ascending-descending subframes not simultaneously, preferable pairing mapping mode also can be correspondingly different.In actual applications, the above-mentioned thought that controll block is set and is scheduled between the subframe pairing mapping relations that can provide according to present embodiment is provided with other forms of pairing mapping relations according to the needs of practical application.
By adopting this controll block corresponding with the implicit expression of the subframe that is scheduled, can reduce the blind Detecting number of times effectively, reach the purpose of saving terminal resource.
As previously mentioned, in the present embodiment control signaling distribution mode also can take with existing LTE in the consistent mode of FDD scheme, do not repeat them here.
Step 602: the control signaling of the subframe that will be scheduled is carried in the controll block corresponding with the described subframe that is scheduled.
In this step, can be according to set controll block of step 601 and the corresponding relation between the subframe of being scheduled, the control signaling that will belong to the subframe of identical pairing places identical controll block.
Step 603: controll block is carried in preceding n the symbol of first descending sub frame and transmits.
In this step, the number of the shared symbol of controll block can dynamically be adjusted, and preferably, its adjusting range n is: more than or equal to 1, and smaller or equal to 9 integer; The concrete size of n can be notified UE by relevant control signaling, for example, can notify UE with Cat0.
In carrying first descending sub frame of controll block, can distinguish according to the time-frequency two-dimensional standard of time, frequency or setting between each controll block.Here, distinguish exactly according to the time and to distinguish, also can be understood as and distinguish according to symbol by the situation of each shared time of controll block.Distinguish exactly according to frequency and to distinguish by the situation of the shared frequency spectrum resource of each controll block.When distinguishing, need set in advance corresponding time-frequency two-dimensional standard according to the time-frequency two-dimensional standard, for example, with the piece on certain bar diagonal in the subframe as controll block etc.
3 controll blocks that step 601 is lifted in the example are distinguished according to the time in TS4, as shown in Figure 7.Fig. 7 shows the structural representation that carries the control signaling in the embodiment of the invention two in first descending sub frame.Referring to Fig. 7, laterally represent time domain among the figure, vertically represent frequency domain.Comprise 3 controll blocks in the down control channel, controll block 1, controll block 2 and controll block 3 take 1～3 symbol among the TS4 successively.Therefore, by the difference of shared symbol, can distinguish each controll block.Running time-frequency resource among the TS4 except that the shared running time-frequency resource of down control channel can be used to transmit data.
For situation about distinguishing according to frequency, controll block 1, controll block 2 and controll block 3 will take frequency spectrum resources different among the TS4 successively, as shown in Figure 8.For situation about controll block being distinguished according to predefined time-frequency two-dimensional standard, controll block 1, controll block 2 and controll block 3 can be according to certain standards that sets in advance, take the running time-frequency resource among the TS4, Fig. 9 is the schematic diagram of a preferred embodiment distinguishing in this manner.
Because the control signaling at most only takies preceding n symbol of first descending sub frame, in first descending sub frame, the symbol except that the shared symbol of control signaling also can take foregoing dual mode to handle, and does not repeat them here.
In the present embodiment, also can be provided for representing the indication that exists data to transmit in the combination of subframe or subframe according to foregoing mode, and when there is transfer of data in the combination of subframe or subframe, the indication corresponding with the combination of described subframe or subframe is carried in the control signaling.
Further, the control signaling that the embodiment of the invention comprised is except that the control signaling of the present defined of LTE, can also be provided for representing the indication that exists data to transmit in the combination of subframe or subframe, and the corresponding relation of the combination and the indication of subframe or subframe is set; When there is transfer of data in the combination of subframe or subframe, the indication corresponding with the combination of described subframe or subframe is carried in the controll block.
As previously mentioned, this indication can be made of bit mapping (bitmap) mode.For example, suppose to comprise in the controll block 1 the control signaling of user a corresponding to TS5, if user a all exists data to need transmission at TS5, TS6 and TS0, then in controll block 1 except that the control signaling that can carry corresponding to TS5, can also represent that this user also exists data to need transmission at TS6 and TS0 with the bitmap mode of 3 bits (for example 111).Here, TS6 and TS0 are exactly the combination of above-mentioned subframe, and indication 111 is exactly the indication corresponding to this combination.For above-mentioned TS6 and TS0, the time-frequency position of concrete transmission can be determined by the mode of making an appointment; Its frequency can be identical with the frequency transmitted among the TS5, also can be according to certain mode frequency hopping of making an appointment.
So far, finish the method flow of present embodiment control channel.
As seen from the above-described embodiment, present embodiment is by being provided with independently controll block of m, and the corresponding relation of controll block and the subframe that is scheduled is set; The control signaling of the subframe that will be scheduled then is carried in the controll block corresponding with the described subframe that is scheduled; At last, controll block is carried in preceding n the symbol of first descending sub frame and transmits.So, corresponding by controll block with the implicit expression of the subframe that is scheduled, can effectively reduce the blind Detecting number of times, to save the resource of terminal; And controll block only takies preceding n symbol of first descending sub frame, can effectively avoid the wasting of resources, reaches the purpose that reduces the required expense of control channel, thereby has realized controlling efficiently the signaling transmission.
And the FDD scheme among the scheme of the disclosed control channel of the embodiment of the invention and the existing LTE has favorable compatibility.
And the technical scheme that the embodiment of the invention provided will be controlled signaling and concentrate and to be carried in first descending sub frame, and therefore, UE only need detect once, and other times can enter resting state, thereby reach power saving, reduce the purpose of signaling consumption.
In addition, in the technical scheme that the embodiment of the invention provided, the control signaling is that largest unit is dynamically adjusted with three symbols, can economize on resources effectively.
More than the method for the control channel that the embodiment of the invention provided is had been described in detail, be described in further detail below by the device of a preferred embodiment the control channel that the embodiment of the invention provided.
Figure 10 is the composition structural representation of the device of control channel in the preferred embodiment of the present invention.Referring to Figure 10, this device comprises: subframe constructing module 1010 and sending module 1020.
Wherein, subframe constructing module 1010 is used for the control signaling is carried on preceding n symbol of first descending sub frame, and described n is: more than or equal to 1, and smaller or equal to the integer of 9 dynamic adjustment; And first descending sub frame sent by sending module 1020;
Sending module 1020, n symbol carries first descending sub frame of controlling signaling before being used for being sent in.
In device shown in Figure 10, may further include step-length module 1030 is set; This step-length is provided with module 1030, is used to the step-length that n dynamically adjusts is set, and set step-length is offered subframe constructing module 1010.At this moment, subframe constructing module 1010, being used for set step-length is unit, and the control signaling is carried in the integral multiple symbol of preceding step-length of first descending sub frame.
In device shown in Figure 10, can further include controll block module 1040 is set; This controll block is provided with module 1040, is used to be provided with m independently controll block, and controll block is set and the corresponding relation of the subframe that is scheduled.At this moment, subframe constructing module 1010, be used for according to controll block be scheduled the corresponding relation of subframe, the control signaling of the subframe that is scheduled is carried in the controll block corresponding with the described subframe that is scheduled, and controll block is carried in preceding n the symbol of first descending sub frame.
In device shown in Figure 10, can further include subframe matching module 1050; This subframe matching module 1050 is used for determining the pair relationhip of subframe according to the frame structure proportion of ascending subframe and descending subframe.At this moment, 1040 controll blocks are provided with module, are used for being provided with according to the number of subframe pairing the controll block of similar number; Subframe constructing module 1010, the control signaling that is used for belonging to the subframe of identical pairing places identical controll block.
Preferably, subframe matching module 1050 can be used for the pair relationhip with any one subframe or a subframe of any two subframes formation.
When proportion of ascending subframe and descending subframe in the frame structure was 3: 4, first descending sub frame was: the 8th subframe TS4;
Controll block shown in Figure 10 is provided with module 1040, can be used to be provided with 3 independently controll blocks; 3 set controll blocks correspond respectively to TS5 and TS 1, TS6 and TS2, TS0 and TS3.
When proportion of ascending subframe and descending subframe in the frame structure was 4: 3, first descending sub frame was: the 9th subframe TS5;
Controll block shown in Figure 10 is provided with module 1040, can be used to be provided with 3 independently controll blocks; 3 set controll blocks correspond respectively to TS4 and TS1, TS6 and TS2, TS0 and TS3.
Preferably, subframe constructing module 1010 shown in Figure 10 can be used for according to the time-frequency two-dimensional standard of time, frequency or setting described controll block being carried on preceding n symbol of first descending sub frame.
Preferably, may further include big or small indicating member 1011 in the subframe constructing module 1010 shown in Figure 10; This size indicating member 1011 is used for the control signaling Cat0 of the shared symbolic number of indication control signaling is placed first descending sub frame; And when in device, being provided with controll block module being set, be used for will the shared symbolic number of indication controll block control signaling Cat0 place the corresponding controll block of first descending sub frame
Can further include subframe indicating member 1012 in the subframe constructing module 1010 shown in Figure 10; This 1012 subframe indicating member is used for being provided with the combination of representing subframe or subframe and has the indication of transfer of data, and the corresponding relation of the combination and the described indication of subframe or subframe is set; When there is transfer of data in the combination of subframe or subframe, be used for the indication corresponding with the combination of described subframe or subframe is carried on the control signaling.
Can further include sub-frame resources in the device shown in Figure 10 and merge module 1060; This sub-frame resources merges module 1060, can be used for the running time-frequency resource symbol of first descending sub frame except that the shared running time-frequency resource symbol of the control signaling resource symbol corresponding with the next subframe of described first descending sub frame merged, this merges resulting running time-frequency resource can be dispatched jointly by network side, is used to transmit data.Certainly, also the running time-frequency resource symbol except that control signaling shared running time-frequency resource symbol in first descending sub frame data can be used to transmit separately, n control signaling that symbol comprised before this first descending sub frame can be placed about the control signaling of this a part of running time-frequency resource.
As seen from the above-described embodiment, the embodiment of the invention will be controlled signaling by the subframe constructing module and concentrate and to be carried in preceding n the symbol of first descending sub frame, and first descending sub frame is sent by sending module; The control signaling Cat0 that will control the shared symbolic number of signaling by big or small indicating member places described first descending sub frame again.So, the control signaling only takies preceding n symbol of first descending sub frame, can effectively avoid the wasting of resources, reaches the purpose that reduces the required expense of control channel, thereby has realized controlling efficiently the signaling transmission.
And present embodiment is provided with module by controll block m independently controll block is set, and controll block is set and the corresponding relation of the subframe that is scheduled; Then by the subframe constructing module according to controll block be scheduled the corresponding relation of subframe, the control signaling of the subframe that is scheduled is carried in the controll block corresponding with the described subframe that is scheduled, and controll block is carried in preceding n the symbol of first descending sub frame.So, corresponding by controll block with the implicit expression of the subframe that is scheduled, effectively reduced the blind Detecting number of times, saved the resource of terminal.
In addition, the FDD scheme among the scheme of the disclosed control channel of the embodiment of the invention and the existing LTE has favorable compatibility.The technical scheme that the embodiment of the invention provided will be controlled signaling and concentrate and to be carried in first descending sub frame, make UE only need detect once, and other times can enter resting state, thereby reach power saving, reduce the purpose of signaling consumption.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1, a kind of method of control channel is characterized in that:
The control signaling is carried in preceding n the symbol of first descending sub frame transmits, described n is: more than or equal to 1, and smaller or equal to the integer of 9 dynamic adjustment.
2, method according to claim 1 is characterized in that, sets in advance the step-length that described n dynamically adjusts;
The control signaling is carried in preceding n the symbol of first descending sub frame is: with set step-length is unit, will control in the integral multiple symbol of preceding step-length that signaling is carried on first descending sub frame.
3, method according to claim 1 is characterized in that, the control signaling is carried in preceding n the symbol of first descending sub frame be:
M independently controll block is set, and controll block is set and the corresponding relation of the subframe that is scheduled;
The control signaling of the subframe that is scheduled is carried in the controll block corresponding with the described subframe that is scheduled;
Described controll block is carried in preceding n the symbol of first descending sub frame and transmits.
4, method according to claim 3 is characterized in that, the piecemeal number m of described controll block is: any one in the integer 1 to 7;
The size of described each controll block is: k symbol; Described k is more than or equal to 1, and smaller or equal to 9 integer;
The size of described each controll block is by the control signaling Cat0 informing user terminal UE of each controll block.
5, method according to claim 3 is characterized in that, before the individual independently controll block of m is set, further comprises: according to proportion of ascending subframe and descending subframe in the frame structure, determine the pair relationhip of subframe;
The piecemeal number m of described controll block is: the integer that equates with the number of described subframe pairing;
Described controll block with the corresponding relation of the subframe that is scheduled is: each controll block is corresponding to the subframe that belongs to the same sub pair relationhip;
The control signaling of the described subframe that will be scheduled be carried on the corresponding controll block of the described subframe that is scheduled in be: the control signaling that will belong to the subframe of identical pairing places identical controll block.
6, method according to claim 5 is characterized in that, the pair relationhip of described definite subframe is:
Constitute a subframe pairing with any one subframe or any two subframes, resulting subframe pairing is defined as the pair relationhip of subframe.
According to claim 5 or 6 described methods, it is characterized in that 7, when proportion of ascending subframe and descending subframe in the frame structure was 3: 4, described first descending sub frame was: the 8th subframe TS4;
The pair relationhip of described subframe is: TS5 and TS1 form a subframe pairing, TS6 and TS2 and form a subframe pairing, TS0 and subframe pairing of TS3 composition;
The piecemeal number of described controll block is 3;
Described controll block with the corresponding relation of the subframe that is scheduled is: 3 controll blocks correspond respectively to TS5 and TS1, TS6 and TS2, TS0 and TS3.
According to each described method of claim 3 to 6, it is characterized in that 8, the time-frequency two-dimensional standard according to time, frequency or setting between the described m controll block is distinguished.
9, according to each described method of claim 1 to 6, it is characterized in that:
The size of described n is by control signaling Cat0 notice UE.
10, according to each described method of claim 1 to 6, it is characterized in that this method further comprises:
The next subframe corresponding symbol of the symbol except that the shared symbol of control signaling and described first descending sub frame in described first descending sub frame is merged, and transmit data in the symbol after described merging;
Or, transmit data in the symbol in described first descending sub frame except that the shared symbol of control signaling.
11, according to each described method of claim 1 to 6, it is characterized in that, further set in advance and be used for representing that there is the indication of transfer of data in the combination of subframe or subframe, and the corresponding relation of the combination and the described indication of subframe or subframe is set;
When there was transfer of data in the combination of subframe or subframe, described control signaling was: the control signaling that carries the indication corresponding with the combination of described subframe or subframe.
12, a kind of device of control channel is characterized in that, comprising: subframe constructing module and sending module;
Described subframe constructing module is used for the control signaling is carried on preceding n symbol of first descending sub frame, and described n is: more than or equal to 1, and smaller or equal to the integer of 9 dynamic adjustment; And described first descending sub frame sent by sending module;
Described sending module, n symbol carries first descending sub frame of controlling signaling before being used for being sent in.
13, device according to claim 12 is characterized in that, further comprise in the described device: step-length is provided with module;
Described step-length is provided with module, is used to be provided with the step-length that described n dynamically adjusts;
Described subframe constructing module, being used for set step-length is unit, and the control signaling is carried in the integral multiple symbol of preceding step-length of first descending sub frame.
14, device according to claim 12 is characterized in that, further comprise in the described device: controll block is provided with module;
Described controll block is provided with module, is used to be provided with m independently controll block, and controll block is set and the corresponding relation of the subframe that is scheduled;
Described subframe constructing module, be used for according to controll block be scheduled the corresponding relation of subframe, the control signaling of the subframe that is scheduled is carried in the controll block corresponding with the described subframe that is scheduled, and controll block is carried in preceding n the symbol of first descending sub frame.
15, device according to claim 14 is characterized in that, further comprises in the described device: the subframe matching module;
Described subframe matching module is used for according to the frame structure proportion of ascending subframe and descending subframe, constitutes the pairing of a subframe with any one subframe or any two subframes;
Described controll block is provided with module, is used for being provided with according to the number of described subframe pairing the controll block of similar number;
Described subframe constructing module, the control signaling that is used for belonging to the subframe of identical pairing places identical controll block.
According to claim 14 or 15 described devices, it is characterized in that 16, described subframe constructing module is used for according to the time-frequency two-dimensional standard of time, frequency or setting described controll block being carried on preceding n symbol of first descending sub frame.
17, according to claim 14 or 15 described devices, it is characterized in that, further comprise big or small indicating member in the described subframe constructing module;
Described big or small indicating member, be used for will indication controll block shared symbolic number control signaling Cat0 place the corresponding controll block of described first descending sub frame.
18, according to each described device of claim 12 to 15, it is characterized in that, further comprise big or small indicating member in the described subframe constructing module;
Described big or small indicating member is used for the control signaling Cat0 of the shared symbolic number of indication control signaling is placed described first descending sub frame.
19, according to each described device of claim 12 to 15, it is characterized in that, comprise further in the described device that sub-frame resources merges module;
Described sub-frame resources merges module, is used for the symbol of described first descending sub frame except that the shared symbol of control signaling and the next subframe corresponding symbol merging of described first descending sub frame.
20, according to each described device of claim 12 to 15, it is characterized in that, further comprise the subframe indicating member in the described subframe constructing module;
Described subframe indicating member is used for being provided with the combination of representing subframe or subframe and has the indication of transfer of data, and the corresponding relation of the combination and the described indication of subframe or subframe is set; When there is transfer of data in the combination of subframe or subframe, be used for the indication corresponding with the combination of described subframe or subframe is carried on the control signaling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101005816A CN101287282A (en) | 2007-04-11 | 2007-04-11 | Method and apparatus for transmitting control signalling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101005816A CN101287282A (en) | 2007-04-11 | 2007-04-11 | Method and apparatus for transmitting control signalling |
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| CN101287282A true CN101287282A (en) | 2008-10-15 |
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| CNA2007101005816A Pending CN101287282A (en) | 2007-04-11 | 2007-04-11 | Method and apparatus for transmitting control signalling |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011050751A1 (en) * | 2009-10-31 | 2011-05-05 | 华为技术有限公司 | Method, device and system for downlink channel transmission |
| CN102377475A (en) * | 2010-08-19 | 2012-03-14 | 大唐移动通信设备有限公司 | Method and device for determining numbers of control region symbols of downlink sub-frames |
| CN102833790A (en) * | 2011-06-13 | 2012-12-19 | 普天信息技术研究院有限公司 | Method for transmitting control signaling |
| CN102883366A (en) * | 2011-07-12 | 2013-01-16 | 普天信息技术研究院有限公司 | Control information sending method for UE (user equipment) |
| CN104038311A (en) * | 2013-03-07 | 2014-09-10 | 电信科学技术研究院 | PMCH transmission method and equipment |
| CN104901769A (en) * | 2014-03-04 | 2015-09-09 | 北京信威通信技术股份有限公司 | Node communication method of Ad hoc network and node equipment |
| CN104901785A (en) * | 2014-03-04 | 2015-09-09 | 北京信威通信技术股份有限公司 | Node communication method of Ad hoc network and node equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011050751A1 (en) * | 2009-10-31 | 2011-05-05 | 华为技术有限公司 | Method, device and system for downlink channel transmission |
| US9172504B2 (en) | 2009-10-31 | 2015-10-27 | Huawei Technologies Co., Ltd. | Method, apparatus and system for downlink channel transmission |
| CN102377475A (en) * | 2010-08-19 | 2012-03-14 | 大唐移动通信设备有限公司 | Method and device for determining numbers of control region symbols of downlink sub-frames |
| CN102377475B (en) * | 2010-08-19 | 2014-03-12 | 大唐移动通信设备有限公司 | Method and device for determining numbers of control region symbols of downlink sub-frames |
| CN102833790A (en) * | 2011-06-13 | 2012-12-19 | 普天信息技术研究院有限公司 | Method for transmitting control signaling |
| CN102833790B (en) * | 2011-06-13 | 2015-07-15 | 普天信息技术研究院有限公司 | Method for transmitting control signaling |
| CN102883366B (en) * | 2011-07-12 | 2015-07-01 | 普天信息技术研究院有限公司 | Control information sending method for UE (user equipment) |
| CN102883366A (en) * | 2011-07-12 | 2013-01-16 | 普天信息技术研究院有限公司 | Control information sending method for UE (user equipment) |
| CN104038311A (en) * | 2013-03-07 | 2014-09-10 | 电信科学技术研究院 | PMCH transmission method and equipment |
| CN104038311B (en) * | 2013-03-07 | 2017-09-29 | 电信科学技术研究院 | A kind of PMCH transmission methods and equipment |
| CN104901769A (en) * | 2014-03-04 | 2015-09-09 | 北京信威通信技术股份有限公司 | Node communication method of Ad hoc network and node equipment |
| CN104901785A (en) * | 2014-03-04 | 2015-09-09 | 北京信威通信技术股份有限公司 | Node communication method of Ad hoc network and node equipment |
| CN104901785B (en) * | 2014-03-04 | 2019-02-22 | 北京信威通信技术股份有限公司 | The node communication method and node device of network without center |
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