CN102377714A - Method and device for enhancing uplink sounding reference signal - Google Patents
Method and device for enhancing uplink sounding reference signal Download PDFInfo
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- CN102377714A CN102377714A CN2010102525932A CN201010252593A CN102377714A CN 102377714 A CN102377714 A CN 102377714A CN 2010102525932 A CN2010102525932 A CN 2010102525932A CN 201010252593 A CN201010252593 A CN 201010252593A CN 102377714 A CN102377714 A CN 102377714A
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Abstract
The invention provides a method for enhancing an uplink sounding reference signal. The method comprises the following steps of: A, setting two categories of uplink sounding reference signal (SRS) time-frequency resources, wherein the uplink SRR time-frequency resource of a first category is the last orthogonal frequency division multiplexing (OFDM) symbol of an uplink sub-frame, and the uplink SRR time-frequency resources of a second category are time-frequency resources unoccupied by a control signal or a pilot except the last OFDM symbol in the uplink sub-frame; and B, selecting a part of time-frequency resources from the uplink SRS time-frequency resources of the first and/or second categories/category, and setting the selected time-frequency resources into a resource pool of the uplink SRS of user equipment (UE). The invention also provides a device for enhancing the uplink sounding reference signal. By the scheme provided by the invention, the capacity of the resource pool of the uplink SRS can be enhanced, the SRS time-frequency resources can be flexibly configured to meet the channel detection requirements of novel technologies according to different ways, and system performance can be improved.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to OFDM (OFDMA) technology, particularly a kind of method and apparatus of enhanced uplink interception reference signal.
Background technology
The up link of OFDM (OFDMA) system utilizes reference signal to carry out data demodulates and channel detection; Wherein up interception reference signal (SRS; Sounding Reference Signal) is a kind of in the up reference signal; Be mainly used in channel detection, comprise definite channel quality, frequency selectivity detection, power control and up timing estimation etc.
Up interception reference signal not only direct detection uplink signal-channel quality; The up channel state information is provided; Can also utilize the characteristics of wireless channel up-downgoing reciprocity, make the base station can utilize the up signal of intercepting of reception to obtain scheduling and the configuration that the down channel situation is used for down channel.Can use in the scene of channel reciprocity at some; The base station is not owing to need subscriber equipment (UE) feedback of down channel situation; Can directly from up interception reference signal, obtain downlink channel condition information and appropriateness schedule downlink more fast more; Save up feedback overhead and feedback time, improved systematic function.
In LTE R8/R9 version; The mechanism of up interception reference signal is to send in the cycle or the single triggering; This mechanism is (minizone RS is a quadrature, receives but be not suitable for many sub-districts) mainly in single sub-district, formulates under the situation of single user's multiple-input and multiple-output (MIMO) and low order MIMO.The running time-frequency resource of SRS is at last symbol of specifying sub-frame of uplink, and capacity is limited.
Along with the development of technology, measurement has proposed more demand to SRS in the introducing of new technology.
Descending multi-user MIMO and downlink multi-stream wave beam forming need more accurately channel information (CSI, Channel State Information) fully.In the scene that can utilize the up-downgoing channel reciprocity, can obtain accurately abundant CSI through the SRS measurement.For satisfying this demand, just need to strengthen SRS, make it not only satisfy general up channel and measure, also need strengthen down channel is measured the demand that strengthens.This just needs SRS capacity and flexibility of resource allocation higher.
New system need support upstream multi-antenna transmit mechanism (being Uplink MIMO).The relative single antenna of a plurality of antennas needs more SRS running time-frequency resource to support the channel measurement of many antennas different antennae port.The prior art scheme mainly is to support up single antenna to send.
Up collaborative multicast communication (CoMP, Coordinated Multi-Point) needs to strengthen SRS and supports reliable minizone to measure; Descending CoMP can utilize SRS to strengthen to carry out the minizone to measure.Existing scheme can not well satisfy many cell measurements demand to single sub-district Demand Design.
Heterogeneous network needs the enhancing of SRS to support the measurement of better CSI.The question marks that face with CoMP seemingly, existing scheme can not well satisfy the measurement demand of heterogeneous network scene to single sub-district Demand Design.
Therefore along with the development of technology; Require SRS not only to have higher flexibility, and the capacity of SRS is at comprehensive running time-frequency resource, after the cyclic shift of transmission dressing skew and SRS sequence is the sign indicating number territory degree of freedom; Still be apparent not enough, also need fundamentally increase SRS running time-frequency resource capacity.And the prior art scheme is in the demand that can not satisfy new technology aspect the flexibility of SRS capacity and resource allocation.
Summary of the invention
The invention provides a kind of method and apparatus of enhanced uplink interception reference signal, can improve the capacity of SRS and the flexibility of resource allocation.
The embodiment of the invention provides a kind of method of enhanced uplink interception reference signal, comprises the steps:
A, two types of up interception reference signal SRS running time-frequency resources of setting; Wherein, First kind uplink SRS running time-frequency resource is last orthogonal frequency division multiplex OFDM symbol of sub-frame of uplink, and second type of uplink SRS running time-frequency resource is the running time-frequency resource that takies of controlled signal or pilot tone except that last OFDM symbol and not in the sub-frame of uplink;
B, from said first kind uplink SRS running time-frequency resource and/or second type of uplink SRS running time-frequency resource, select the part running time-frequency resource, and selected running time-frequency resource is set to the resource pool of the uplink SRS of user equipment (UE).
Preferably, said first kind SRS running time-frequency resource is positioned at same subframe or different subframe with second type of SRS running time-frequency resource.
Preferably, said step B comprises:
Running time-frequency resource in the unoccupied wholly or in part OFDM symbol of at least one that in subframe, reserve is provided with second type of SRS running time-frequency resource.
Preferably, said step B further comprises:
The resource indicator message of the positional information of carrying second type of SRS running time-frequency resource is sent in the base station to UE;
The positional information of said second type of SRS running time-frequency resource comprises that allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource of this second type of SRS running time-frequency resource place subframe is with respect to the time domain side-play amount of said first kind SRS running time-frequency resource;
Perhaps, the positional information of said second type of SRS running time-frequency resource comprise this second type of SRS running time-frequency resource place subframe allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource with respect to the time domain side-play amount and the frequency domain side-play amount of said first kind SRS running time-frequency resource.
Preferably, said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of same subframe with second type of SRS running time-frequency resource; Perhaps said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of adjacent sub-frames with second type of SRS running time-frequency resource.
Preferably; UE for up multiple-input and multiple-output or descending multiple-input and multiple-output; Different antennae port to said UE disposes SRS respectively, and said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
Preferably, the different UEs of matching in the descending multi-user multiple-input and multiple-output is disposed SRS respectively, said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
Preferably, this method further comprises:
UE repeats to send SRS at the different time-domain position of same frequency subband;
The base station receives a plurality of SRS that are positioned at the same frequency subband, and said a plurality of SRS are carried out Combined Treatment.
The embodiment of the invention also proposes a kind of device of enhanced uplink interception reference signal, and this device is arranged in the base station, comprising:
First is provided with module, is used for specifying last orthogonal frequency division multiplex OFDM symbol of sub-frame of uplink to be set to first kind uplink SRS running time-frequency resource;
Second is provided with module, be used for sub-frame of uplink except that last OFDM symbol and not the running time-frequency resource that takies of controlled signal or pilot tone be set to second type of SRS running time-frequency resource;
Scheduler module be used for selecting the part running time-frequency resource from said first kind uplink SRS running time-frequency resource and second type of uplink SRS running time-frequency resource, and selected running time-frequency resource is set to the resource pool of the uplink SRS of user equipment (UE).
Preferably, said first kind SRS running time-frequency resource is positioned at same subframe or different subframe with second type of SRS running time-frequency resource.
Preferably, said second module be set comprise:
The resource reservation unit, the unappropriated OFDM symbol of at least one that is used for reserving in subframe;
The unit is set, and the OFDM symbol that is used for reserving in said resource reservation unit is provided with second type of SRS running time-frequency resource.
Preferably, this device further comprises:
Indicating module is used for sending to subscriber equipment (UE) resource indicator message of the positional information carry second type of SRS running time-frequency resource;
The positional information of said second type of SRS running time-frequency resource comprises that allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource of this second type of SRS running time-frequency resource place subframe is with respect to the time domain side-play amount of said first kind SRS running time-frequency resource;
Perhaps, the positional information of said second type of SRS running time-frequency resource comprise this second type of SRS running time-frequency resource place subframe allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource with respect to the time domain side-play amount and the frequency domain side-play amount of said first kind SRS running time-frequency resource.
Preferably, said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of same subframe with second type of SRS running time-frequency resource; Perhaps said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of adjacent sub-frames with second type of SRS running time-frequency resource.
Preferably; UE for up multiple-input and multiple-output or descending multiple-input and multiple-output; Scheduler module disposes SRS respectively to the different antennae port of said UE, and said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
Preferably, scheduler module disposes SRS respectively to the different UEs of matching in the upstream or downstream multi-user multiple-input and multiple-output, and said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
Preferably, this device further comprises:
The Combined Treatment module is used to receive a plurality of SRS that are positioned at same frequency, and said a plurality of SRS are carried out Combined Treatment.
Can find out from above technical scheme; The present invention keeps the SRS running time-frequency resource of stipulating in the prior art systems; And utilize in the up channel in the existing system not running time-frequency resource that is used by pilot tone and data and/or the running time-frequency resource that can avoid using, as the newly-increased running time-frequency resource of SRS, the capacity of the resource pool of uplink SRS increases greatly like this; The SRS running time-frequency resource can be supported the required channel detection needs of new technology, elevator system performance according to different mode flexible configuration.
Description of drawings
Fig. 1 is a kind of SRS running time-frequency resource classification sketch map of the embodiment of the invention one;
Fig. 2 is the another kind of SRS running time-frequency resource configuration schematic diagram of the embodiment of the invention one;
Fig. 3 is the SRS running time-frequency resource configuration schematic diagram of the embodiment of the invention three;
Fig. 4 is the SRS running time-frequency resource configuration schematic diagram of the embodiment of the invention four.
Embodiment
The present invention program keeps the SRS running time-frequency resource of stipulating in the prior art systems on the one hand; On the other hand; Utilize in the up channel in the existing system not by pilot tone and the running time-frequency resource of data use and/or the running time-frequency resource that can avoid using; As the newly-increased running time-frequency resource of SRS, thereby reach the purpose that improves the SRS capacity.Newly-increased resource can have been unified as the use of unified resource pond with former SRS running time-frequency resource, also can make a distinction use.Behind the newly-increased SRS running time-frequency resource, the SRS running time-frequency resource can be supported the required channel detection needs of new technology according to different mode flexible configuration, and the elevator system performance below is explained respectively through a plurality of embodiment.
Fig. 1 is the SRS running time-frequency resource configuration schematic diagram of the embodiment of the invention one.Wherein, show two continuous sub-frame: subframe n and subframe n+1.The oblique line pattern is represented existing SRS running time-frequency resource, and grid pattern is represented the SRS running time-frequency resource that increases newly.The SRS running time-frequency resource of 101 expression prior aries is included in last OFDM symbol of specifying sub-frame of uplink, is 2 groups through frequency domain pectination frequency division multiplexing, obtains the SRS channel of code division multiplexing then through the different cyclic shifts of the basic sequence of RS self.And newly-increased SRS running time-frequency resource in 103 to the 106 expression present embodiments, in the up channel of prior art systems not by pilot tone and the resource of data use and/or the running time-frequency resource that can avoid using.
Newly-increased SRS can be positioned at same subframe with original SRS, also can be positioned at different subframes.Newly-increased SRS running time-frequency resource 103 is positioned at same subframe (subframe n) with SRS running time-frequency resource 104 and existing SRS running time-frequency resource 101; And last OFDM symbol of the newly-increased SRS running time-frequency resource 105 and the subframe n+1 at SRS running time-frequency resource 106 places to be SRS can be used on this sub-district is not configured the blank resource 102 to SRS, therefore newly-increased SRS running time-frequency resource 105 is positioned at different subframes with SRS running time-frequency resource 106 with existing SRS running time-frequency resource 101.The blank parts resource that is not taken by SRS can be used for the transmission of up other data.In like manner, more if desired SRS running time-frequency resource can increase more SRS running time-frequency resource in a sub-frame.
Comparatively practical execution mode is: in resource, reserve at least one row Resource Unit (RE; Resource element); Promptly reserve the resource of at least one partially or completely unappropriated OFDM symbol; Shown in Fig. 2 rectangular strip 108 and 110, the SRS of grid pattern 107 and 109 expression UE only has been to use a section in the OFDM sign resources of reserving.The signal of SRS generates, and mapping mode is all unaffected.Possibly send simultaneously with other up channel if consider newly-increased SRS, can be influential to the up channel single-carrier property, for example, the ascending control channel influence that the SRS signal possibly send the frequency band two ends simultaneously.Can take the method for homogenizing influence, the OFDM symbol that being used to of reserving in the promptly different subframes launched SRS moves in the position that does not have other uplink reference signals (RS) according to certain rules.
The embodiment of the invention two is further considered the compatibility relation with the prior art scheme on the basis of embodiment one.Traditional U E can continue to use original SRS running time-frequency resource, and the UE of later release preferentially uses the SRS running time-frequency resource of expansion, and certain original SRS running time-frequency resource also can be distributed to the UE of later release.
When the UE of later release is given in the resource distribution of newly-increased SRS, can increase the influence of SRS newly to reduce in different RB or different subframes for traditional UE with the SRS of traditional UE.
In the SRS running time-frequency resource allocation plan that the embodiment of the invention three proposes; When newly-increased SRS and original SRS when same subframe is sent; Can on original relatively SRS time-frequency resource allocating parameter, add the side-play amount of time domain, perhaps the side-play amount of time domain and frequency domain is indicated newly-increased SRS running time-frequency resource position.Its skew can be that fixed amount also can change.
Fig. 3 is the SRS running time-frequency resource configuration schematic diagram of the embodiment of the invention three.Be without loss of generality, Fig. 3 illustrates a kind of succinct newly-increased SRS running time-frequency resource planning and indicating means, and similar method indication can be adopted in the time-frequency position of other newly-increased SRS.
Be to be example in the situation of same subframe among Fig. 3 with newly-increased SRS running time-frequency resource and original SRS running time-frequency resource; The side-play amount of time domain can be represented with multiple mode; As with symbol of last subframe what OFDM symbols of being separated by, or be positioned at which OFDM symbol of subframe, this example adopts the fixed time-domain skew to do explanation as an example; If newly-increased SRS running time-frequency resource is fixed on the 6th symbol of subframe, promptly from existing SRS running time-frequency resource 8 the OFDM symbols that squint left.In resource indicator message, only need a bit to indicate whether to have the time domain skew.For example for the n subframe, if there is skew just not indicate the running time-frequency resource shown in 112, if skew is arranged then indicate the running time-frequency resource shown in 111, and other SRS parameter former states are used.In like manner, for the n+1 subframe, if there is skew just not indicate the running time-frequency resource shown in 114, if skew is arranged then indicate the running time-frequency resource shown in 113.
The SRS running time-frequency resource allocation plan that the embodiment of the invention four proposes can further satisfy many antenna ports of MIMO channel and accurately measure demand.
(1) the uplink SRS running time-frequency resource for same UE different antennae port disposes; For improving the accuracy that different antennae port channel correlation is measured; Can retrain and distribute the employed SRS running time-frequency resource of UE different antennae port to be configured in to take same frequency subband (or identical RB) and different OFDM symbol in the same subframe; If the identical OFDM symbol of use is arranged, then need use the different transmission pectination skews or the different cyclic shifts of SRS sequence to distinguish.Also can be the SRS that takies the different OFDM symbols of identical RB on the adjacent sub-frames.These SRS match between the newly-increased SRS, also can be newly-increased SRS and original SRS pairings.SRS Resources allocation position is as shown in Figure 4, and the zone between the double dot dash line is the frequency resource that is used for as SRS, and 119 and 120 are respectively the OFDM symbol that is used among subframe n and the subframe n+1 as SRS.115 and 117 are newly-increased SRS, and 116 and 118 is original SRS, is the SRS that takies the different OFDM symbols of identical RB.
For the different UEs of pairing in the uplink multi-users multiple-input and multiple-output (MU-MIMO), use as the above-mentioned SRS that takies the different OFDM symbols of identical RB, these SRS match between the newly-increased SRS, also can be newly-increased SRS and original SRS pairings; Can be positioned at same subframe or different adjacent sub-frames.The different UEs of said pairing comprises the UE of successful matching and possibly match but still unpaired UE.The SRS of said UE can be periodicity SRS and aperiodicity SRS; For example UE each has the periodicity SRS of self; When UE1 and UE2 became the MU-MIMO of pairing, UE2 can start SRS aperiodic on the close resource of SRS resource that UE1 uses; Support the base station to obtain the precoding preferably of pairing UE orthogonality through receiving SRS; As at the identical frequency subband of adjacent subframe, or different transmission pectination skew on the identical Physical Resource Block PRB resource, or different SRS sequence cycles displacement on the identical running time-frequency resource.
Simultaneously in the scene of utilizing the up-downgoing channel reciprocity; Be the descending MIMO of fine support, multiuser MIMO and downlink multi-stream wave beam forming; Also need on identical or contiguous running time-frequency resource, to carry out channel detection as far as possible, can obtain the correlation of accurate different antennae port channel with this.Be respectively for the SRS distribution method of time frequency resources:
For descending MIMO and beam forming: like above-mentioned up same UE different antennae port SRS running time-frequency resource configuration;
For descending MU-MIMO: the different UEs that distribution possibly matched or match is used as the SRS configuration mode of above-mentioned up MU-MIMO.
The SRS allocation plan that embodiment five proposes is that the Signal to Interference plus Noise Ratio of SRS (SINR) can not be expired the solution of demand to power limited or interference-limited scene.
In cell edge or CoMP district, during the reliability of UE SRS of distant needs enhancing UE from the base station, UE can be at the same frequency subband; Different time-domain positions repeats to send SRS, can be 115,116 like Fig. 4; Repeat on the running time-frequency resource of 117 and 118 signals to send, the base station receives a plurality of SRS that are positioned at same frequency, and said a plurality of SRS are carried out Combined Treatment; Channel situation that can the outlying UE of quite good detecting, thus reach the purpose that more accurately measures channel.
The SRS running time-frequency resource configuration mode that the embodiment of the invention proposes can be supported in the CoMP zone very naturally and realize the SRS cooperation.The CoMP district needs abundanter SRS running time-frequency resource to support channel condition information (CSI) to obtain; Each sub-district that intersection covers is not only just like the resources bank of last OFDM symbol of subframe shown in Fig. 1-4 as SRS; Other resources in the subframe have also been planned; Make at the employable SRS running time-frequency resource of the UE in CoMP district abundantlyer, thereby be beneficial to the phase mutual interference that reduces SRS between the UE, and then support the cooperation of many sub-districts.
The SRS cooperation in CoMP district can only be supported through expansion SRS running time-frequency resource.Original SRS running time-frequency resource in the zone shown in the tradition UE continuation use 101; Because traditional UE itself do not support CoMP, the UE of later release preferentially uses the SRS running time-frequency resource that is not taken by traditional UE in the zone shown in the SRS running time-frequency resource and 101 of expansion.In the CoMP zone, owing to have only the UE of later release to support the CoMP working method, SRS cooperation resource can preferentially be used the SRS running time-frequency resource of expansion in the CoM district.
Specifically, the traditional UE in the CoMP zone continues to use original SRS mechanism, is equivalent to traditional UE and need not to comprehend the CoMP dividing region, does not just exist when the CoMP district, has simplified backward compatibility greatly.The SRS cooperation in CoMP district realizes through expansion SRS running time-frequency resource; Owing to have only the UE of new technology just to support CoMP; The UE that expansion SRS of the present invention also is a new technology supports, so support the SRS in CoMP district cooperation through expansion SRS running time-frequency resource, can set up new distribution mechanism; Very naturally, support backwards compatibility, reduced the complexity of system.
When constituting CoMP in more sub-districts, original SRS running time-frequency resource is only at last OFDM symbol of each uplink frame, and hoping between many sub-districts to stagger in the time domain dimension, to send the degree of freedom of position very limited for SRS.For example have only 2 sub-frame of uplink in the radio frames of whole 10ms; The time-domain position of SRS is altogether also with regard to two, and when the covering that intersects 3 to 4 sub-districts so formed the CoMP zone, the UE transmission of the different districts in CoMP district was intercepted signal and on time domain, staggered just very difficult; Can only use the frequency domain and the degree of freedom in sign indicating number territory to distinguish; Because the SRS signal quality of UE in CoMP district own is relatively poor, the cooperation of using the frequency domain and the degree of freedom in sign indicating number territory to carry out, complexity is higher.And the present invention program will expand the SRS running time-frequency resource and original SRS running time-frequency resource is used for the method that CoMP district SRS cooperates jointly; The SRS running time-frequency resource has increased the degree of freedom on time domain; Cooperate through the time domain dimension in the time of can making the UE transmission SRS in the CoMP district compactly; The simplified system complexity improves the performance of CoMP district SRS cooperation.
The present invention has simple and easyly effectively expanded SRS running time-frequency resource capacity on the frame foundation of protocols having, and resource allocation mechanism more flexibly is provided, and has taken into account compatibility simultaneously.
(1) the present invention utilizes in the up channel of existing protocol not resource of being used by pilot tone and data and/or the resource that can avoid using, as the newly-increased running time-frequency resource of SRS, and the method that provides a kind of SRS capacity to increase;
(2) provide one to overlap SRS time-frequency resource allocating mechanism flexibly,, can well support the technical characteristic demand that LTE-A is new with the method for accordingly new technology being supported, and the demand of other associated communication system.
(3) newly-increased SRS mechanism prior art scheme can well be used the smooth and easy backwards compatibility of having taken into account.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (16)
1. the method for an enhanced uplink interception reference signal is characterized in that, comprises the steps:
A, two types of up interception reference signal SRS running time-frequency resources of setting; Wherein, First kind uplink SRS running time-frequency resource is last orthogonal frequency division multiplex OFDM symbol of sub-frame of uplink, and second type of uplink SRS running time-frequency resource is the running time-frequency resource that takies of controlled signal or pilot tone except that last OFDM symbol and not in the sub-frame of uplink;
B, from said first kind uplink SRS running time-frequency resource and/or second type of uplink SRS running time-frequency resource, select the part running time-frequency resource, and selected running time-frequency resource is set to the resource pool of the uplink SRS of user equipment (UE).
2. method according to claim 1 is characterized in that, said first kind SRS running time-frequency resource is positioned at same subframe or different subframe with second type of SRS running time-frequency resource.
3. method according to claim 1 is characterized in that, said step B comprises:
Running time-frequency resource in the unoccupied wholly or in part OFDM symbol of at least one that in subframe, reserve is provided with second type of SRS running time-frequency resource.
4. method according to claim 1 is characterized in that, said step B further comprises:
The resource indicator message of the positional information of carrying second type of SRS running time-frequency resource is sent in the base station to UE;
The positional information of said second type of SRS running time-frequency resource comprises that allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource of this second type of SRS running time-frequency resource place subframe is with respect to the time domain side-play amount of said first kind SRS running time-frequency resource;
Perhaps, the positional information of said second type of SRS running time-frequency resource comprise this second type of SRS running time-frequency resource place subframe allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource with respect to the time domain side-play amount and the frequency domain side-play amount of said first kind SRS running time-frequency resource.
5. according to each described method of claim 1 to 4, it is characterized in that said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of same subframe with second type of SRS running time-frequency resource; Perhaps said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of adjacent sub-frames with second type of SRS running time-frequency resource.
6. method according to claim 5; It is characterized in that; UE for up multiple-input and multiple-output or descending multiple-input and multiple-output; Different antennae port to said UE disposes SRS respectively, and said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
7. method according to claim 5; It is characterized in that; Different UEs to matching in the descending multi-user multiple-input and multiple-output disposes SRS respectively, and said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
8. method according to claim 5 is characterized in that, this method further comprises:
UE repeats to send SRS at the different time-domain position of same frequency subband;
The base station receives a plurality of SRS that are positioned at the same frequency subband, and said a plurality of SRS are carried out Combined Treatment.
9. the device of an enhanced uplink interception reference signal is characterized in that, this device is arranged in the base station, comprising:
First is provided with module, is used for specifying last orthogonal frequency division multiplex OFDM symbol of sub-frame of uplink to be set to first kind uplink SRS running time-frequency resource;
Second is provided with module, be used for sub-frame of uplink except that last OFDM symbol and not the running time-frequency resource that takies of controlled signal or pilot tone be set to second type of SRS running time-frequency resource;
Scheduler module be used for selecting the part running time-frequency resource from said first kind uplink SRS running time-frequency resource and second type of uplink SRS running time-frequency resource, and selected running time-frequency resource is set to the resource pool of the uplink SRS of user equipment (UE).
10. device according to claim 9 is characterized in that, said first kind SRS running time-frequency resource is positioned at same subframe or different subframe with second type of SRS running time-frequency resource.
11. device according to claim 9 is characterized in that, said second is provided with module comprises:
The resource reservation unit, the unappropriated OFDM symbol of at least one that is used for reserving in subframe;
The unit is set, and the OFDM symbol that is used for reserving in said resource reservation unit is provided with second type of SRS running time-frequency resource.
12. device according to claim 9 is characterized in that, this device further comprises:
Indicating module is used for sending to subscriber equipment (UE) resource indicator message of the positional information carry second type of SRS running time-frequency resource;
The positional information of said second type of SRS running time-frequency resource comprises that allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource of this second type of SRS running time-frequency resource place subframe is with respect to the time domain side-play amount of said first kind SRS running time-frequency resource;
Perhaps, the positional information of said second type of SRS running time-frequency resource comprise this second type of SRS running time-frequency resource place subframe allocation of parameters and this second type of SRS running time-frequency resource of first kind SRS running time-frequency resource with respect to the time domain side-play amount and the frequency domain side-play amount of said first kind SRS running time-frequency resource.
13., it is characterized in that said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of same subframe with second type of SRS running time-frequency resource according to each described device of claim 9 to 12; Perhaps said first kind SRS running time-frequency resource is configured in the same frequency subband and different OFDM symbol of adjacent sub-frames with second type of SRS running time-frequency resource.
14. device according to claim 13; It is characterized in that; UE for up multiple-input and multiple-output or descending multiple-input and multiple-output; Scheduler module disposes SRS respectively to the different antennae port of said UE, and said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
15. device according to claim 13; It is characterized in that; Scheduler module disposes SRS respectively to the different UEs of matching in the upstream or downstream multi-user multiple-input and multiple-output; Said SRS belongs to first kind SRS running time-frequency resource and second type of SRS running time-frequency resource, and perhaps said SRS only belongs to second type of SRS running time-frequency resource.
16. device according to claim 13 is characterized in that, this device further comprises:
The Combined Treatment module is used to receive a plurality of SRS that are positioned at same frequency, and said a plurality of SRS are carried out Combined Treatment.
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