CN102932300B - Multi-carrier-based independent training sequence channel allocation method and mobile communication system - Google Patents
Multi-carrier-based independent training sequence channel allocation method and mobile communication system Download PDFInfo
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Abstract
The invention provides a multi-carrier-based independent training sequence channel allocation method and a mobile communication system, wherein the multi-carrier-based independent training sequence channel allocation method comprises the steps that: when multi-carrier UE (User Equipment) accesses a cell, an RNC (Radio Network Controller) determines whether independent training sequence channels are allocated to the multi-carrier UE, if the independent training sequence channels are allocated to the multi-carrier UE, the RNC further determines that independent training sequence channels are allocated to the multi-carrier UE on which carriers; the RNC respectively determines configuration parameters of the independent training sequence channels allocated to the multi-carrier UE on all carriers of the multi-carrier UE, which needs being allocated with the independent training sequence channels; the RNC sends the configuration parameters to the multi-carrier UE and a base station in which the multi-carrier UE is; and the multi-carrier UE determines numbers g of subframes in which the configuration parameters are, and sends training sequences in the allocated independent training sequence channels. The invention solves the problem of incapability of allocating enough independent training sequence channels to the multi-carrier UE.
Description
Technical field
The present invention relates to a kind of stand-alone training sequence channel distribution method based on multicarrier and mobile communication system, (Time Division-Synchronous Code Division Multiple Access is called for short: TD-SCDMA) system mainly to belong to TD SDMA.
Background technology
In TD-SCDMA system, in any subframe, (User Equipment is called for short: UE) can only send upward signal and receive downstream signal on a carrier wave single carrier subscriber equipment.
At present, for improving uplink and downlink peak rate and the uplink and downlink throughput of single carrier UE, successively introduce high-speed packet access (High Speed Packet Access, be called for short: HSPA) technology, single user multiple-input and multiple-output (Single User Multiple Inputs Multiple Outputs, be called for short: SU-MIMO) (Multiple User Multiple Inputs Multiple Outputs is called for short: MU-MIMO) technology for technology and multi-user's multiple-input and multiple-output.SU-MIMO technology wherein and MU-MIMO technology all need the wireless channel estimating UE according to the upward signal of UE.But sometimes UE can not have upward signal to send to base station in continuous several subframe.In this case, in order to the wireless channel that base station still can be allowed to estimate UE, (Radio Network Controller is called for short: RNC) can distribute the skew (midamble shift) corresponding to stand-alone training sequence channel (Standalone Midamble Channel) and the training sequence (midamble) that sends on this channel to UE in advance radio network controller.UE can send the training sequence corresponding to skew distributing to this UE by RNC in this stand-alone training sequence channel.Described training sequence is the content in the training sequence territory in a burst, for realizing the functions such as channel estimating, Synchronization Control and power control.
In TD-SCDMA system, have 128 length to be the basic training sequences of 128 chips, be divided into 32 code characters, each code character comprises 4 basic training sequences.Community only uses a basic training sequences in one of them code character sequence, and other three basic training sequences are thrown aside and do not used.Particularly, the code character of using to this community of each cell configuration by RNC, and from this code character, select a basic training sequences by RNC.The training sequence that different UEs on the same time slot in this community adopts is generated by this basic training sequences.Particularly, by this basic training sequences by 128 chip cyclic extensions to 144+ (K-1) W chip, K represents the number of the skew of basic training sequences, and W represents that channel impulse response window is long.The span of K is: K=2,4,6,8,10,12,14,16; The span of W is: W=2,4,6,8,10,12,16,32,64; The span of skew is: 1 ~ K.From the sequence that above-mentioned cyclic extensions obtains, intercept 144 chips, just obtain a training sequence.Above-mentioned K skew corresponding K intercepts the start position of training sequence.Therefore, when distributing training sequence to a UE, only need to distribute a skew to UE, UE can determine by this skew the training sequence distributing to it uniquely.The number K of the skew of this basic training sequences is determined by RNC.Such as, RNC can give first base training sequence in a cell configuration first code character, and the number K of configuration skew is 8.
In order to improve uplink and downlink peak rate and the uplink and downlink throughput of UE further, multicarrier UE arises at the historic moment.In any subframe, multicarrier UE can send upward signal simultaneously over a number of carriers, also can receive downstream signal over a number of carriers simultaneously.But, when distributing stand-alone training sequence channel for multicarrier UE, need on each carrier wave of this multicarrier UE support, all distribute stand-alone training sequence channel and offset accordingly.But because the number of skew is limited, therefore the distribution method of existing stand-alone training sequence channel will not be suitable for multicarrier UE.Now illustrate as follows:
If community supports C carrier wave and each carrier wave on average supports L UE, then community supports the access of LC UE altogether.When the UE being linked into community is single carrier UE, average each carrier wave supports L single carrier UE, and the stand-alone training sequence channel of N number of UE divides training sequence corresponding to the multiplexing same skew of multiplexing mode with frame on each carrier wave, then on each carrier wave the stand-alone training sequence channel of L UE will need to use L/N offset corresponding to training sequence.Therefore, reserved L/N skew is needed to use to stand-alone training sequence channel.
When the UE being linked into community is multicarrier UE, consider worst situation, each UE supports C carrier wave, then each carrier wave has LC UE, the training sequence that the stand-alone training sequence channel distributing to this LC UE will use corresponding to LC/N skew.As can be seen here, during community support multicarrier UE, the increase of the number of the carrier wave supported along with UE is doubled and redoubled by the number of required reserved skew.
At present, general community comprises C=6 carrier wave, and each carrier wave supports L=16 UE, and community supports the access of LC=96 UE altogether.K=8, N=4 on each carrier wave.Reserve M=4 skew in advance on each carrier for distributing stand-alone training sequence channel to UE on each carrier wave.When the UE being linked into community is single carrier UE, in community, each carrier wave needs L/N=4 skew.Now, M=4 just meets this demand.
When the UE being linked into community is the multicarrier UE that can support C=6 carrier wave, then need LC/N=24 skew, K=8 the skew that required shift numbers can provide far beyond each carrier wave.Therefore, when using the existing stand-alone training sequence channel method of salary distribution, enough skews are not had can to supply to distribute.
Summary of the invention
The invention provides a kind of stand-alone training sequence channel distribution method based on multicarrier and mobile communication system, in order to provide enough skew for stand-alone training sequence channel on each carrier wave of community.
One aspect of the present invention provides a kind of stand-alone training sequence channel distribution method based on multicarrier, comprising:
When multicarrier UE accesses community, RNC determines whether as this multicarrier UE distributes stand-alone training sequence channel, and if so, then which carrier wave described RNC determines on further for described multicarrier UE distributes stand-alone training sequence channel;
Described RNC needs at described multicarrier UE the configuration parameter each carrier wave of distribution stand-alone training sequence channel being determined respectively the stand-alone training sequence channel distributing to described multicarrier UE, this configuration parameter comprises: the time slot t at described stand-alone training sequence channel place, the basic training sequences n that the described stand-alone training sequence channel selected in multiple basic training sequences of described time slot t Nei Cong community uses and skew k, and the frame of described stand-alone training sequence channel divides multiplexing cycle P, duration T and biased offset;
Described configuration parameter is sent to the base station at described multicarrier UE and described multicarrier UE place by described RNC;
Described multicarrier UE determines the number g of described stand-alone training sequence channel place subframe according to described cycle P, duration T and biased offset, and by being arranged in the described stand-alone training sequence channel of subframe g on time slot t on described carrier wave, send the training sequence with skew k produced by basic training sequences n to described base station.
The present invention provides a kind of mobile communication system on the other hand, comprising RNC, base station and multicarrier UE, wherein:
Described RNC comprises: determination module, for when described multicarrier UE accesses community, determines whether as this multicarrier UE distributes stand-alone training sequence channel, if so, then determines further on which carrier wave for described multicarrier UE distributes stand-alone training sequence channel; Distribution module, the configuration parameter of the stand-alone training sequence channel distributing to described multicarrier UE is determined respectively on each carrier wave needing distribution stand-alone training sequence channel at described multicarrier UE, this configuration parameter comprises: the time slot t at described stand-alone training sequence channel place, the basic training sequences n that the described stand-alone training sequence channel selected in multiple basic training sequences of described time slot t Nei Cong community uses and skew k, and the frame of described stand-alone training sequence channel divides multiplexing cycle P, duration T and biased offset; Sending module, for sending to the base station at described multicarrier UE and described multicarrier UE place by the described configuration parameter by module assigns;
Described multicarrier UE comprises: subframe determination module, for determining the number g of described stand-alone training sequence channel place subframe according to described cycle P, duration T and the biased offset come from the described configuration parameter of described RNC; Sequence sending module, by being arranged in the described stand-alone training sequence channel of subframe g on the time slot t on described carrier wave, sends the training sequence with skew k produced by basic training sequences n to described base station.
The present invention is by using multiple propaedeutics codes of community for multicarrier UE distribution stand-alone training sequence channel, and use two data fields of burst to send stand-alone training sequence channel, meet multicarrier UE over a number of carriers to the demand of stand-alone training sequence channel sequence, solve existing stand-alone training sequence channel distribution method cannot distribute enough stand-alone training sequence channel problem to multicarrier UE.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the stand-alone training sequence channel distribution method embodiment based on multicarrier of the present invention;
Fig. 2 ~ 4 are respectively three kinds of burst structure figure corresponding to the stand-alone training sequence channel distribution method based on multicarrier of the present invention;
Fig. 5 is the structural representation of mobile communication system embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the flow chart of the stand-alone training sequence channel distribution method embodiment based on multicarrier of the present invention, as shown in the figure, comprises the steps:
Step 100, when multicarrier UE accesses community, RNC determines whether as this multicarrier UE distributes stand-alone training sequence channel, and if so, then which carrier wave this RNC determines on further for this multicarrier UE distributes stand-alone training sequence channel.
Wherein, refer to can the subscriber equipment of simultaneously receiving and transmitting signal over a number of carriers for described multicarrier UE.When multicarrier UE accesses, the business that RNC can ask according to multicarrier UE, determines whether to distribute stand-alone training sequence channel to multicarrier UE.Such as: the business that RNC asks according to multicarrier UE, distribute the resource of these business of carrying to this multicarrier UE after, RNC finds that the situation not having up channel to send can appear in this multicarrier UE on one or more carrier wave, and at this moment RNC can determine: need to distribute stand-alone training sequence channel to this multicarrier UE on these carrier waves.Certainly, RNC can also adopt additive method to determine whether to distribute stand-alone training sequence channel to multicarrier UE and distribute stand-alone training sequence channel to multicarrier UE on which carrier wave.After this, for needing the multicarrier UE distributing stand-alone training sequence channel, continue to perform following step 200.
Step 200, described RNC needs at described multicarrier UE the configuration parameter each carrier wave of distribution stand-alone training sequence channel being determined respectively the stand-alone training sequence channel distributing to described multicarrier UE, this configuration parameter comprises: the time slot t at described stand-alone training sequence channel place, the basic training sequences n that the described stand-alone training sequence channel selected in multiple basic training sequences of described time slot t Nei Cong community uses and skew k, and the frame of described stand-alone training sequence channel divides multiplexing cycle P, duration T and biased offset.
Carry out stand-alone training sequence channel in each time slot on a carrier wave when distributing, only use in community in four basic training sequences in prior art, and abandon other three need not; And this step determines that from four basic training sequences distributing to this community a basic training sequences distributes to the stand-alone training sequence channel of described multicarrier UE, each basic training sequences is likely used to.
Particularly, when selecting basic training sequences, from four basic training sequences of described community, preferably first select a skew not by the basic training sequences used, only have when this selected basic training sequences is without available offsets, from described four basic training sequences, just select another skew not by the basic training sequences used, such as, can carry out in accordance with the following methods:
(1) RNC selects a basic training sequences A according to current mechanism in advance in four of community propaedeutics codes, and the skew of the training sequence that the dependent training sequence channel of this community on each carrier wave adopts is the skew of this basic training sequences A; When described RNC distributes stand-alone training sequence channel in the time slot t of described carrier wave described multicarrier UE, if this basic training sequences A exists available offsets, then an available offsets of this RNC prioritizing selection this basic training sequences A and A distributes to described multicarrier UE.
(2) when in the described time slot t on described carrier wave, when each skew of described basic training sequences A is all unavailable, described RNC selects an available offsets of another basic training sequences B except above-mentioned basic training sequences A and B to distribute to described multicarrier UE in described time slot t.More preferably, when the residue propaedeutics midamble code beyond above-mentioned basic training sequences A is not all assigned to any multicarrier UE, described RNC can select arbitrarily one wherein and distribute to described multicarrier UE; When basic training sequences B has been assigned to other multicarriers UE use and B also exists available skew, then described this basic training sequences B of RNC prioritizing selection; When described basic training sequences B does not have available offsets, described RNC again selects one arbitrarily and distributes to described multicarrier UE in the residue basic training sequences except above-mentioned basic training sequences A and B.While the basic training sequences n determining to distribute to described multicarrier UE and skew k, described RNC determines that the frame of the stand-alone training sequence channel distributing to described multicarrier UE divides multiplexing cycle P, duration T and biased offset, described biased offset is used to specify the position dividing first subframe distributing to described multicarrier UE in multiplexing cycle P at any one frame, and described duration T represents divides at each frame the number of subframes distributing to described multicarrier UE in multiplexing cycle P.
Said method object is: when the skew of a basic training sequences in a time slot of a carrier wave is by use, distribute each available offsets of this basic training sequences to described multicarrier UE as far as possible, until after each skew of this basic training sequences is exhausted, then select each skew of another basic training sequences to distribute.
The reason done like this is: at the same time slot of same carrier wave, can not disturb between the training sequence corresponding to same basic training sequences, and can disturb between the corresponding separately training sequence of different basic training sequences.Therefore after adopting above-mentioned each skew by a basic training sequences to use up, the mode of each skew of another basic training sequences of reallocation is conducive to reducing interference.
As previously mentioned, the corresponding training sequence of a skew of a basic training sequences, this training sequence can send at the time slot t of any subframe.When distributing stand-alone training sequence channel to multicarrier UE, except the basic training sequences that needs to indicate this channel occupancy and skew, also need to indicate: the number of each subframe that this channel sends.That is: when the stand-alone training sequence channel of multicarrier UE1 adopts the skew 1 of a basic training sequences, and do not mean that: in each subframe, the training sequence of skew 1 correspondence of this basic training sequences all belongs to the stand-alone training sequence channel of this multicarrier UE1.Parameter P, T and offset that the stand-alone training sequence channel needs that specifically training sequence of skew 1 correspondence of which subframe belongs to this multicarrier UE1 are determined by RNC determine.
A unavailable finger of skew of a described basic training sequences code: the training sequence corresponding to this skew is all assigned with away in each subframe, or, training sequence corresponding to this skew is not assigned with away in some subframe, but the subframe be not assigned with away cannot meet the needs of the stand-alone training sequence channel of described multicarrier UE.Such as: the cycle P of the stand-alone training sequence channel of this multicarrier UE determined according to RNC and duration T, RNC finds that the stand-alone training sequence channel of this multicarrier UE needs the subframe be not more assigned with away.
Usually, described RNC needs at described multicarrier UE to distribute on each carrier wave of stand-alone training sequence, first determine that the frame of the stand-alone training sequence channel distributing to described multicarrier UE divides multiplexing cycle P and duration T, then determine the time slot t at described stand-alone training sequence channel place, and determine number n and the skew k and biased offset of the basic training sequences code that the stand-alone training sequence channel of described multicarrier UE uses at time slot t.
Particularly, the business that described RNC can carry on described carrier wave according to multicarrier UE determines parameter P and the T of the stand-alone training sequence channel of described multicarrier UE on described carrier wave.Such as: RNC determines, when multicarrier UE just can allow base station obtain the situation of the wireless channel of multicarrier UE with cycle P=4 and duration T=2 transmission stand-alone training sequence channel to base station, distribute P=4 and T=2 can to multicarrier UE according to the business that multicarrier UE carries on a carrier wave.Certainly, RNC is also according to other information acquisitions P and T.
According to P and T, described RNC can determine whether a skew of a basic training sequences code can be used for described multicarrier UE further.Such as, the skew 1 of basic training sequences A has been distributed to multicarrier UE1 and has been used.Multicarrier UE1 just uses the training sequence corresponding to this skew in some subframe.Training sequence corresponding to this skew is not assigned to any multicarrier UE in some subframe and uses.In this case, can determine whether this skew can be used multicarrier UE2 according to the parameter P of multicarrier UE2 and duration T.
Such as: the P=4 of multicarrier UE1, T=2, offset=0.Above-mentioned parameter shows: within the cycle that length is P=4 subframe, multicarrier UE1 is fixing uses the first two subframe, and latter two subframe in each cycle is not used.
If the P=4 of multicarrier UE2, T=2.Then in these cases, skew 1 can be distributed to multicarrier UE2, and within each cycle, latter two sub-frame allocation be used to multicarrier UE2.
If the P=4 of multicarrier UE2, T=3.Then in these cases, 1 couple of multicarrier UE2 is offset just unavailable.Because latter two subframe remaining can not meet the demand of the T=3 of multicarrier UE2 within the cycle of each P=4 subframe.
Step 300, the configuration parameter of the stand-alone training sequence channel that described carrier wave is distributed to described multicarrier UE is sent to the base station at described multicarrier UE and described multicarrier UE place by described RNC.
Particularly, when described multicarrier UE supports U carrier wave, when when multicarrier UE accesses, described RNC is configured with V <=U carrier wave to described multicarrier UE, described RNC distributes stand-alone training sequence channel on V1 <=V carrier wave of described multicarrier UE multicarrier UE, and by the configuration parameter of described V1 stand-alone training sequence channel: the time slot t at this stand-alone training sequence channel place, the basic training sequences n used, the cycle P of skew k and this channel, duration T and biased offset send to described multicarrier UE and described base station.As V1 < V, show only on the partial carrier wave of multicarrier UE, not all carrier wave to distribute stand-alone training sequence channel, this is because, multicarrier UE there will not be the situation not having upward signal to send on the carrier wave not having stand-alone training sequence channel, or, the characteristics of radio channels of multicarrier UE on some carrier wave relatively, in these carrier waves, any one carrier wave can, with reference to the channel estimation results of other carrier waves, therefore not need to carry out channel estimating to carrier wave specific assigned stand-alone training sequence channel each in these carrier waves.
Step 400, described multicarrier UE determines the number g of described stand-alone training sequence channel place subframe according to described cycle P, duration T and biased offset, and by being arranged in the described stand-alone training sequence channel of subframe g on time slot t on described carrier wave, send the training sequence with skew k produced by basic training sequences n to described base station.
Particularly, the number g of the stand-alone training sequence channel place subframe distributing to described multicarrier UE is determined in described multicarrier UE and described base station according to following formula:
f mod P＝offset
g＝f+i，i＝0，1，......，T-1。
In above formula, f represents subframe number.
Above formula shows: group frame number f meets: during f mod P=offset, the subframe at the number of subframe to be each subframe of g=f+i be all stand-alone training sequence channel place distributing to multicarrier UE, wherein, i=0,1 ..., T-1.The typical value of T is T=1.The span of T: T ∈ [1, P].
As shown in Figure 2; the duration of a burst is exactly a time slot; in the prior art; the total length of a burst is 864 chips, wherein comprises data symbol territory that two length are 352 chips, protection interval that training sequence territory that length is 144 chips and length are 16 chips (is called for short: GP).Stand-alone training sequence channel described in this step then sends in above-mentioned training sequence territory, and 144 chips in this training sequence territory are just being used on and are sending the training sequence that the length corresponding to skew distributing to multicarrier UE is 144 chips.
Further, RNC is when determining the configuration parameter of stand-alone training sequence in step 200, determine the initial chip position s of described stand-alone training sequence channel in described time slot t further, correspondingly, RNC carries out can also increasing the process determining the initial chip position s of described stand-alone training sequence channel in described time slot t when stand-alone training sequence channel is distributed.
As mentioned above, also have two data symbol fields in a time slot except training sequence territory, in the prior art, when using training sequence territory to send training sequence, these two data symbol fields do not use, thus cause waste.And the process increased in step 200, change the present situation that this data symbol territory does not use, by determining initial chip position s, making the position of two data symbol fields also can distribute to stand-alone training sequence channel and using.As shown in Figure 3, the initial chip position distributing to the stand-alone training sequence channel of a multicarrier UE is s=0.When this multicarrier UE sends the training sequence of 144 chips length on this channel, this training sequence is positioned at front 144 chips of first data symbol field.
In the process that step 200 increases, except the GP that length is 16 chips, the residue chip position of a burst all can be used for distributing stand-alone training sequence channel, such as, as shown in Figure 4, the stand-alone training sequence channel that three have different initial chip position is assigned with in a burst, these three channel allocation are to different multi-carrier UE, because these channels lay respectively at different chip positions, therefore these stand-alone training sequence channel can use identical training sequence, thus further increase the utilance of basic training sequences and its each skew.
When distributing the initial chip position s of described stand-alone training sequence channel in described time slot t to multicarrier UE, need to ensure, the numerical value of s is in the scope of 1 ~ 705.
Method described in the present embodiment is by using multiple propaedeutics codes of community for multicarrier UE distribution stand-alone training sequence channel, and use two data fields of burst to send stand-alone training sequence channel, meet multicarrier UE over a number of carriers to the demand of stand-alone training sequence channel sequence, solve existing stand-alone training sequence channel distribution method cannot distribute enough stand-alone training sequence channel problem to multicarrier UE.
Fig. 5 is the structural representation of mobile communication system embodiment of the present invention, as shown in the figure, this system comprises: RNC 10, base station 20 and multicarrier UE 30, multicarrier UE 30 wherein and base station 20 wireless connections, this base station 20 and RNC 10 wired connection, its operation principle is as follows:
When described multicarrier UE 30 accesses community, determination module 11 in described RNC 10 determines whether as this multicarrier UE distributes stand-alone training sequence channel, if, then determine that concrete deterministic process can see the related description of said method embodiment for described multicarrier UE distributes stand-alone training sequence channel on which carrier wave further.
After this, distribution module 12 needs at described multicarrier UE the configuration parameter each carrier wave of distribution stand-alone training sequence channel being determined respectively the stand-alone training sequence channel distributing to described multicarrier UE 30, this configuration parameter comprises: the time slot t at described stand-alone training sequence channel place, the basic training sequences n that the described stand-alone training sequence channel selected in multiple basic training sequences of described time slot t Nei Cong community uses and skew k, and the frame of described stand-alone training sequence channel divides multiplexing cycle P, duration T and biased offset, concrete deterministic process can see the related description of said method embodiment.
Wherein, when selecting basic training sequences, from four basic training sequences of described community, preferably first select a skew not by the basic training sequences used, only have when this selected basic training sequences is without available offsets, from described four basic training sequences, just select another skew not by the basic training sequences used, to reduce interference.
Then, by sending module 13, the described configuration parameter distributed by distribution module 12 is sent to the base station 20 at described multicarrier UE 30 and described multicarrier UE 30 place.After receiving above-mentioned configuration parameter, described multicarrier UE 30 determines the number g of described stand-alone training sequence channel place subframe according to the described cycle P, duration T and the biased offset that come from the described configuration parameter of described RNC 10 by subframe determination module 31, concrete deterministic process can see the related description of said method embodiment; Then by the time slot t of sequence sending module 32 on described carrier wave by being arranged in the described stand-alone training sequence channel of subframe g, the training sequence with skew k produced by basic training sequences n is sent, to realize the functions such as channel estimating, Synchronization Control and power control to described base station 20.
In addition, in order in a time slot due to two data symbol fields idle need not and the waste caused, the distribution module 12 of described RNC 10 when determining the time slot at described stand-alone training sequence channel place, also can determine stand-alone training sequence channel initial chip position s in this timeslot further; The configuration parameter of described stand-alone training sequence channel comprises this initial chip position s further, thus further increases the utilance of basic training sequences and its each skew, and concrete illustrating can see Fig. 3 and Fig. 4 and related content thereof.
System described in the present embodiment is by using multiple propaedeutics codes of community for multicarrier UE distribution stand-alone training sequence channel, and use two data fields of burst to send stand-alone training sequence channel, meet multicarrier UE over a number of carriers to the demand of stand-alone training sequence channel sequence, solve existing stand-alone training sequence channel distribution method cannot distribute enough stand-alone training sequence channel problem to multicarrier UE.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1., based on a stand-alone training sequence channel distribution method for multicarrier, it is characterized in that, comprising:
When multicarrier UE accesses community, radio network controller (RNC) determines whether as this multicarrier UE distributes stand-alone training sequence channel, and if so, then which carrier wave described RNC determines on further for described multicarrier UE distributes stand-alone training sequence channel;
Described RNC needs at described multicarrier UE the configuration parameter each carrier wave of distribution stand-alone training sequence channel being determined respectively the stand-alone training sequence channel distributing to described multicarrier UE, this configuration parameter comprises: the time slot t at described stand-alone training sequence channel place, the basic training sequences n that the described stand-alone training sequence channel selected in multiple basic training sequences of described time slot t Nei Cong community uses and skew k, and the frame of described stand-alone training sequence channel divides multiplexing cycle P, duration T and biased offset;
Described configuration parameter is sent to the base station at described multicarrier UE and described multicarrier UE place by described RNC;
Described multicarrier UE determines the number g of described stand-alone training sequence channel place subframe according to described cycle P, duration T and biased offset, and by being arranged in the described stand-alone training sequence channel of subframe g on time slot t on described carrier wave, send the training sequence with skew k produced by basic training sequences n to described base station;
Wherein, the basic training sequences selecting described stand-alone training sequence channel to use from multiple basic training sequences of community comprises:
From four basic training sequences of described community, select a skew not by the basic training sequences used, only have when this selected basic training sequences is without available offsets, from described four basic training sequences, just select another skew not by the basic training sequences used.
2. method according to claim 1, it is characterized in that according to described cycle P, duration T and biased offset, described multicarrier UE determines that the number g of described stand-alone training sequence channel place subframe comprises: when the number f of first subframe meets f mod P=offset, g=f+i, wherein, i=0,1, T-1, T ∈ [1, P].
3. method according to claim 1, is characterized in that: described RNC, when determining the time slot at described stand-alone training sequence channel place, also determines stand-alone training sequence channel initial chip position s in this timeslot further; The configuration parameter of described stand-alone training sequence channel comprises initial chip position s further.
4. a mobile communication system, is characterized in that, comprises radio network controller (RNC), base station and multicarrier UE, wherein:
Described RNC comprises:
Determination module, for when described multicarrier UE accesses community, determines whether as this multicarrier UE distributes stand-alone training sequence channel, if so, then determines further on which carrier wave for described multicarrier UE distributes stand-alone training sequence channel;
Distribution module, the configuration parameter of the stand-alone training sequence channel distributing to described multicarrier UE is determined respectively on each carrier wave needing distribution stand-alone training sequence channel at described multicarrier UE, this configuration parameter comprises: the time slot t at described stand-alone training sequence channel place, the basic training sequences n that the described stand-alone training sequence channel selected in multiple basic training sequences of described time slot t Nei Cong community uses and skew k, and the frame of described stand-alone training sequence channel divides multiplexing cycle P, duration T and biased offset; Wherein, the basic training sequences that described stand-alone training sequence channel uses is selected in the following way: from four basic training sequences of described community, select a skew not by the basic training sequences used, only have when this selected basic training sequences is without available offsets, from described four basic training sequences, just select another skew not by the basic training sequences used;
Sending module, for sending to the base station at described multicarrier UE and described multicarrier UE place by the described configuration parameter by module assigns; Described multicarrier UE comprises:
Subframe determination module, for determining the number g of described stand-alone training sequence channel place subframe according to described cycle P, duration T and the biased offset come from the described configuration parameter of described RNC;
Sequence sending module, by being arranged in the described stand-alone training sequence channel of subframe g on the time slot t on described carrier wave, sends the training sequence with skew k produced by basic training sequences n to described base station.
5. system according to claim 4, is characterized in that, described distribution module, also for when determining the time slot at described stand-alone training sequence channel place, also determines stand-alone training sequence channel initial chip position s in this timeslot further; The configuration parameter of described stand-alone training sequence channel comprises this initial chip position s further.
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