CN102075298A - Method for transmitting detection signal by using user equipment (UE), UE and base station - Google Patents
Method for transmitting detection signal by using user equipment (UE), UE and base station Download PDFInfo
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- CN102075298A CN102075298A CN2009101098218A CN200910109821A CN102075298A CN 102075298 A CN102075298 A CN 102075298A CN 2009101098218 A CN2009101098218 A CN 2009101098218A CN 200910109821 A CN200910109821 A CN 200910109821A CN 102075298 A CN102075298 A CN 102075298A
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Abstract
The invention provides a method by which the detection accuracy of a detection signal can be improved aiming at the condition that user equipment (UE) transmits the detection signal by using a plurality of antennas and which can be flexibly used for the UE under different environments. The method comprises the following steps that: the UE receives a detection signal transmission instruction signaling which is transmitted by a base station, wherein the detection signal transmission instruction signaling comprises a detection signal transmission moment of the UE; and in a set detection signal transmission time interval or a detection signal transmission time interval which is noticed by the base station, the UE transmits the detection signal from the plurality of antennas by using the same detection signal sequence in a transmitting antenna mapping mode at transmission moments which are indicated by adjacent base stations. Corresponding to the method implemented on a UE side, the invention also correspondingly provides a method on a base station side and corresponding user equipment and base station.
Description
Technical field
The present invention relates to the communications field, specifically be applicable to the technical field that sends into the detectable signal of realizing Channel Detection.
Background technology
In the prior art, the scheduling to user equipment (UE) need be finished by knowing broad-band channel information in the base station, and detectable signal is to make the base station know up broad-band channel information important information, and therefore obtaining detectable signal is the important step of carrying out information interaction between base station and subscriber equipment.
Below be the mode that the base station obtains broad-band channel information in the prior art:
S001, the base station is by the information of downlink signaling notice UE about the employed resource of detectable signal, and wherein this information comprises the delivery time of detectable signal, the sign indicating number sequence that sends frequency band, transmitting antenna, detectable signal, transmitted power etc.;
S002, UE receive above-mentioned downlink signaling, and send detection reference signal on the indicated resource of the information that above-mentioned downlink signaling comprises;
S003, detectable signal is detected in the base station on above-mentioned resource, can be informed in the broad-band channel information on the respective resources.
At present, along with the continuous evolution of wireless communication system, the technology that is adopted is also brought in constant renewal in, and therefore also correspondingly the design of detectable signal is had higher requirement.With long evolving system (LTE, Long Term Evolution) be example, detection reference signal (SRS in the LTE system, Sounding Reference Signal) is exactly a kind of detectable signal that bandwidth channel information is known in the base station that is used for, in present LTE system, at maximum configurable 2 antennas of UE side, UE only needs send SRS in turn on 2 antennas, can make the base station know up broad-band channel information by repeatedly sending; And follow-up continuous evolution along with technology, in the LTE-Advanced in future system, also can increase in the configurable number of antennas of UE side, for example reach 4, and can in the LTE-Advanced system, use more advanced technologies, precoding technique for example, this application in detectable signal have increased the complexity of design detectable signal.
To sum up, for the many antennas of user equipment (UE), promptly use the scene of 2 or 2 above antenna transmission detectable signals, be the development of reply technology, the send mode that detectable signal more flexibly need be provided with solve exist in the present technology analyze insufficient and the lower technical problem of detection accuracy that produce to acquisition environment.
Summary of the invention
At above-mentioned technical problem, the various embodiments of the present invention purpose is to provide a kind of method that can improve the detectable signal accuracy of detection, at the UE of varying environment, can use flexibly.
The embodiment of the invention discloses the method that a kind of UE side is implemented, comprise: UE receives the detectable signal transmission indication signaling that the base station sends, this detectable signal sends indication signaling and comprises the detectable signal delivery time of this UE, and comprises at least two detectable signal delivery times; In detectable signal transmit time segments that be provided with or the base station notice, at above-mentioned detectable signal delivery time, this UE uses the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at the delivery time of adjacent base station indication.
The embodiment of the invention also discloses the method that a kind of base station side is implemented, comprise: the base station sends detectable signal to user equipment (UE) and sends indication signaling, this detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate this UE to use the mapping mode of identical or different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at the delivery time of adjacent detectable signal.
Corresponding method embodiment, apparatus of the present invention embodiment also provide subscriber equipment, comprising: the signaling receiver module, be used to receive the detectable signal transmission indication signaling that the base station sends, and this detectable signal sends the detectable signal delivery time that indication signaling comprises described UE; The detectable signal sending module is used for using the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at adjacent delivery time in the detectable signal transmit time segments of base station that be provided with or described notice.
Simultaneously, apparatus of the present invention embodiment also corresponding method embodiment provides the base station, comprise: signaling sending module, be used for sending detectable signal and send indication signaling to user equipment (UE), this detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate UE to use the mapping mode of identical or different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at the delivery time of adjacent detectable signal.
The technical scheme that adopts various embodiments of the present invention to provide can be implemented detection method flexibly to UE at the state of UE, improves the accuracy of detection of detectable signal.
Description of drawings
Fig. 1 is the first embodiment of the invention flow chart;
Fig. 2 uses the mapping mode of identical detectable signal sequence and transmitting antenna for the embodiment of the invention and sends the schematic diagram of detectable signal;
Fig. 3 uses identical transmitting antenna to make up the schematic diagram that sends the detectable signal sequence for first embodiment of the invention specifically is applied on 2 symbols;
Fig. 4 (a) uses discontinuous frequency band inequality for first embodiment of the invention and sends the detectable signal example schematic;
Fig. 4 (b) uses sequential frequency band for first embodiment of the invention and sends the detectable signal example schematic;
Fig. 4 (c) uses same frequency band for first embodiment of the invention and sends the detectable signal example schematic;
Fig. 5 is a second embodiment of the invention LTE system applies example schematic;
Fig. 6 is an embodiment of the invention UE structure chart;
Fig. 7 is embodiment of the invention architecture of base station figure.
Embodiment
For make 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 more detail.
At the UE side, first embodiment, as shown in Figure 1, the flow process of first embodiment mainly comprises:
S101, user equipment (UE) receive the detectable signal transmission indication signaling that the base station sends, and this detectable signal sends the detectable signal delivery time that indication signaling comprises the UE of base station indication, and comprises at least two detectable signal delivery times;
S102, in the detectable signal transmit time segments of base station that be provided with or above-mentioned notice, at above-mentioned delivery time, UE uses the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at adjacent delivery time.
Wherein, detectable signal sends indication signaling can pass through high-level signaling, and for example, SRS configuration signal message bearing, the delivery time of the detectable signal of UE are meant that the UE that needs of base station indication sends the moment of detectable signal.Detectable signal is to be used to make the base station to know the signal of uplink channel information, for example the detection reference signal in the LTE system (SRS, Sounding Reference Signal).The transmit time segments of detectable signal is meant, the period that detectable signal takies, comprise the transmit time segments of base station notice UE, and be also included within the transmit time segments of the detectable signal that is provided with among the UE.For example, transmit time segments can be the transmit time segments that quantity forwarded equals number of transmit antennas purpose detectable signal, and particularly, for example, for the UE that 4 antennas are arranged, its transmit time segments can be to send 4 periods that detectable signal need use.Transmit time segments can also be that quantity forwarded is the transmit time segments of the detectable signal of special value, the transmit time segments that is used to send 3 detectable signals or 4,5 detectable signals that for example is provided with among the UE.
The mapping mode of detectable signal sequence and transmitting antenna is meant which antenna is used to send the send mode of which detectable signal or with the sort of mode the detectable signal sequence is carried out precoding and sent detectable signal.Concrete for the scene of the mode that adopts precoding from many antenna transmission detectable signal, the mapping mode that can adopt is included in adjacent delivery time and adopts identical precoding vector or the right detectable signal sequence of pre-coding matrix to carry out precoding.
Use the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at adjacent delivery time, as shown in Figure 2, be exemplified below, first delivery time is adjacent with second delivery time, first delivery time is used to send first detectable signal, UE uses the transmitting antenna identical with first delivery time to send second detectable signal at second delivery time, by that analogy, the signal number that sends is not limited to 2, the adjacent delivery time that is meant is adjacent, delivery time is arranged in transmit time segments, is used to send detectable signal.
Perhaps, use the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at adjacent delivery time, also can be exemplified as, at second delivery time, precoding vector or pre-coding matrix that use is carried out precoding to the first detectable signal sequence carry out precoding and send second detectable signal the second detectable signal sequence that sends at the second adjacent delivery time, and this send mode is present in the scene that sends detectable signal by precoding more.
Particularly, among first embodiment, UE can use the detectable signal sequence of base station notice and the mapping mode of transmitting antenna, also can use the detectable signal sequence that is provided with among the UE and the mapping mode of transmitting antenna.Wherein, the method of the mapping mode of base station notice UE detectable signal sequence and transmitting antenna comprises: base station notice UE is receiving that detectable signal uses detectable signal to send the detectable signal sequence of first indication signaling indication and the mapping mode of transmitting antenna before sending second indication signaling, to be the base station send indication signaling by detectable signal sends notice to UE, notifies the detectable signal sequence that this UE changes current use and the mapping mode of transmitting antenna.For example, default setting uses the different detectable signal sequences and the mapping mode of transmitting antenna among the UE, the base station can send signaling UE by detectable signal and use the identical detectable signal sequence and the mapping mode of transmitting antenna, changes the detectable signal sequence of UE use and the mapping mode of transmitting antenna.In addition, the base station also can be notified the UE transmission detectable signal sequence that detectable signal uses and the mapping mode of transmitting antenna in the following way: notify UE to send before each UE transmission detectable signal and visit the detectable signal sequence of detectable signal use and the mapping mode of transmitting antenna
The method of using first embodiment to provide, in concrete the application, for example, when two symbols that use uplink pilot time slot send detectable signal, UE uses identical detectable signal sequence to comprise from many antenna transmission detectable signal with the mapping mode of transmitting antenna at adjacent delivery time: use identical precoding vector or pre-coding matrix that the detectable signal sequence is carried out precoding and transmission at above-mentioned two symbols, perhaps, on above-mentioned two symbols, use identical transmitting antenna to send detectable signal, as shown in Figure 3.
Further, in conjunction with sending frequency band, in first embodiment, use the mapping mode of identical detectable signal sequence and antenna to send under the situation of detectable signal at UE, can also use sequential frequency band or same frequency band from many antenna transmission detectable signal further.UE can use the sequential frequency band of default setting or same frequency band to send detectable signal, uses the identical detectable signal sequence and the mapping mode of transmitting antenna in conjunction with adjacent moment.UE also can receive the indication information of the transmission frequency band of base station notice, for example detectable signal sends indication signaling, this indication signaling can pass through high-level signaling, and for example (Physical Downlink Shared Channel PDSCH) transmits by Physical Downlink Shared Channel in the LTE system.The transmission frequency mode that the transmission frequency indication UE that comprises by this indication signaling uses, this transmission frequency indication are used to notify UE to use sequential frequency band or same frequency band to send detectable signal.Further, the base station sends the detectable signal transmission indication signaling that indication signaling changes the transmission frequency mode of the current use of UE by the detectable signal that comprises above-mentioned transmission frequency indication that sends.Perhaps, the base station sends detectable signal to UE and sends indication signaling when each UE sends detectable signal, and this detectable signal sends indication signaling and comprises the transmission frequency indication.
The technical scheme that adopts first embodiment to provide can make UE use identical antenna transmission detectable signal at adjacent delivery time, and perhaps the identical precoding mode of UE use is encoded to the detectable signal sequence and sent.Owing to adopt above-mentioned send mode, can be the send mode of UE configuration signal flexibly.For example, can carry out joint-detection to the detectable signal that the less UE of band width configuration sends.This mainly is because in the present communication system, can not be by sending the UE that big bandwidth and high-power detectable signal obtain better estimated accuracy, for example, UE for cell edge, because the transmitted power of these UE is limited, so the base station is less for the bandwidth that these UE send the detectable signal configuration, simultaneously, because UE is far away apart from the base station, so that the base station receives the signal power of detectable signal of UE is also lower.For the less UE of these band width configuration, the method that adopts first embodiment to provide can be utilized the temporal correlation of channel, and adjacent in time detectable signal is carried out joint-detection to strengthen estimated performance.Sending detectable signal with the LTE system is example, shown in Fig. 4 (a), adjacent a plurality of detectable signal delivery times use identical transmitting antenna or precoding mode, joint-detection can be carried out to the SRS of UE at first detectable signal delivery time, second detectable signal delivery time (nSRS=1,2) in the base station.The time interval in, this two moment lower when the rate travel of UE hour, the channel variation in these two moment can be ignored substantially, thereby can be to this twice SRS transmission, be the joint-detection that 16 PRB are carried out in transmission that UE sends the SRS of 8 PRB respectively at every turn, to obtain better estimated accuracy.
The requirement of joint-detection is that adjacent in time repeatedly detectable signal need send according to identical transmitting antenna pattern, and the time interval that these detectable signals send is enough little, preferably, the employed bandwidth of these detectable signals should be continuous or identical.Therefore the method that adopts first embodiment to provide can be carried out joint-detection to the detectable signal that UE sends.Solved in the prior art since the employed bandwidth of adjacent detectable signal of UE discontinuous cause can't carry out joint-detection to improve the technical problem of estimated accuracy.
Further, use sequential frequency band or same frequency band to send the application of detectable signal, then can strengthen accuracy of detection further for combining.Particularly, with the LTE system is example, in Fig. 4 (a), visit on the basis of using identical transmitting antenna or precoding mode at adjacent detectable signal delivery time, if the bandwidth of detectable signal is continuous, the UE among the figure for example, its frequency band at the adjacent SRS delivery time SRS of part is continuous, for example n
SRSUsed PRB8～15, n at=2 o'clock
SRSUsed PRB 16～23 at=3 o'clock, and then be convenient to detect.Yet, send the situation that detectable signal has randomness in adjacent moment with sequential frequency band, same shown in Fig. 4 (a), UE has only back 2 employed frequency bands of delivery time to be only continuous in per 4 detectable signal delivery times.If adopt the technical scheme of the use sequential frequency band that first embodiment further provides, then can further strengthen the flexibility of joint-detection.For example if adopt present embodiment, can be so that the bandwidth of the detectable signal that UE sends at other delivery times of adjacent detectable signal also be continuous, shown in Fig. 4 (b), at n
SRSThe employed frequency band of detectable signal in=0～3 moment all is continuous, is convenient to receiver like this and obtains more precise channels estimated performance.
If UE also can strengthen the property in the frequency hopping mode of adjacent a plurality of detectable signal delivery times use same frequency bands.Though prior art can be supported the detectable signal sending mode of same frequency band, i.e. frequency hopping not, but can't survey the channel conditions in broadband, if and supported frequency hopping, situation for frequency hopping, can be referring to shown in Fig. 4 (a), adjacent two continuously constantly, detectable signal has occupied the situation of different bandwidth.For example for UE, n
SRSUsed PRB0～7, n at=0 o'clock
SRSUsed PRB24～31 at=1 o'clock, also can't bring preferable performance for joint-detection this moment.If the method for using same frequency band to send in adjacent moment that adopts that first embodiment provides, shown in Fig. 4 (c), n for example
SRSUsed PRB0～7, n at=0 o'clock
SRSStill used PRB0～7 at=1 o'clock, the bandwidth of the detectable signal that sends at adjacent detectable signal delivery time is identical, then can further improve accuracy of detection, solve the not high problem of the discontinuous accuracy of detection of bringing of bandwidth, be convenient to receiver and obtain more precise channels estimated performance.
Second embodiment, present embodiment is described by the flow process of base station side, provides base station indication UE to send the method for detectable signal.
Particularly, this method comprises, the base station sends detectable signal to user equipment (UE) and sends indication signaling, this detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate UE to use the mapping mode of identical or different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at the delivery time of adjacent detectable signal.
Wherein, delivery time, transmit time segments, detectable signal, the implication of same concept is identical among the mapping mode of detectable signal sequence and transmitting antenna and first embodiment.Flow process also is corresponding, because this embodiment solves the base station side corresponding techniques means that same technical problem provides with first embodiment.
Different with UE side among first embodiment is, the base station is before sending detectable signal transmission indication signaling to UE, can be according to the channel condition information of UE feedback, UE interference strength information to other base stations, perhaps any one in the rate travel of UE determined the detectable signal sequence that UE uses and the mapping mode of transmitting antenna.Particularly, the base station determines that UE uses the condition of identical detectable signal sequence and the mapping mode of transmitting antenna can comprise following in specifically giving an example any one:
The channel status of condition 1, UE feedback.Reference Signal Received Power (the RSRP of UE feedback for example, Reference Signal Received Power) is lower than the thresholding of setting, perhaps the power rising space (power headroom) of UE feedback is lower than the thresholding of setting, just illustrates that then the channel status of UE is relatively poor;
Perhaps
Perhaps
The rate travel of UE is detected in condition 3, base station, for example the upward signal of UE is detected in the base station, the channel status of knowing UE is less in the variation of time-domain, the rate travel of UE is lower than the thresholding of setting, think that then the rate travel of UE is lower, need this moment to strengthen the detection performance, therefore adopt identical mapping mode by the detectable signal that detects a plurality of moment transmissions.
Do not satisfy the then definite different detectable signal sequences and the mapping mode of transmitting antenna of using of UE of above-mentioned condition.
The method of the base station notice UE use detectable signal sequence that second embodiment provides and the mapping mode of transmitting antenna also is applicable to the base station among first embodiment.The method of the detectable signal sequence of base station notice UE change default setting and the mapping mode of transmitting antenna also is applicable to the base station of first embodiment.
Particularly, be described below for the implementation method of the mapping mode that uses identical or different detectable signal sequence and transmitting antenna at adjacent a plurality of detectable signal delivery times from many antenna transmission detectable signal.
A kind of method is that the mode by static configuration realizes.For example, use identical or different " mapping mode of detectable signal sequence and transmitting antenna " to realize that promptly this emission mode can be held fixed configurations at UE at continuous a plurality of detectable signal delivery times regularly by UE.Particularly, the fixedly occupation mode of UE can be by known to the base station, so UE and base station can reach an agreement, i.e. the moment of informing base station detection signal.For example, in the TDD of LTE system system, when UE is configured to use 2 symbols transmission detectable signals of UpPTS, can on these 2 symbols, use identical precoding to send the detectable signal sequence regularly, perhaps on 2 symbols, use identical transmitting antenna to make up regularly and send the detectable signal sequence, as shown in Figure 3.
Another kind method is, the mode by non-static configuration is implemented in adjacent a plurality of detectable signal delivery times and uses the mapping mode of identical or different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal.Wherein, non-static state comprises semi-static and dynamic two kinds of situations, and the semi-static base station notice UE that is meant used the mapping mode of having notified before new signaling arrives, perhaps be the mapping mode of the current use of UE; Dynamically be meant the base station when UE sends SRS, all notify the mapping mode of its use of UE at every turn.Base station notice UE can comprise at the non-static configuration method of the mapping mode of adjacent employed detectable signal sequence of a plurality of detectable signal delivery times and transmitting antenna:
The detectable signal sequence that method 1. base stations need be used UE and the mapping mode of transmitting antenna are by signaling UE:
For example, the detectable signal that the base station can be determined the base station is notified UE with the mapping mode of transmitting antenna by downlink signaling, and UE receives afterwards according to corresponding mapping mode from many antenna transmission detectable signal.Alternatively, before notice UE, as previously mentioned, the base station can be according to the channel condition information of UE feedback, the UE interference strength information to other base stations, and perhaps any one in the rate travel of UE determined the detectable signal sequence that UE uses and the mapping mode of transmitting antenna.
The detectable signal sequence that method 2. system default UE use and the mapping mode of transmitting antenna, the base station is by signaling UE use and the detectable signal sequence of the UE use of system default and the different another kind of mode of mapping mode of transmitting antenna.As described in first embodiment, the base station sends indication signaling notice UE by detectable signal and changes the detectable signal sequence of default setting among the UE and the mapping mode of transmitting antenna, perhaps notice UE in base station uses the use information constantly of another kind of mapping mode, promptly notifies UE what adopts the mode different with current mapping mode to send detectable signal constantly at.For example, system default or default setting UE use the different detectable signal sequences and the mapping mode of transmitting antenna, when UE did not receive the delivery time of mapping mode of identical detectable signal sequence that the mapping mode signaling of change detectable signal sequence that the base station sends and transmitting antenna or UE do not receive that the base station is notified and transmitting antenna, UE sent detectable signal according to different mapping modes.When the base station expects that UE is when k detectable signal delivery time sends detectable signal according to identical mapping mode, identical mapping mode can be used by signaling UE at k-k0 in advance constantly in the base station, then sends detectable signal at k detectable signal delivery time according to identical mapping mode after UE receives.Perhaps the information notice UE in the cycle of same map mode will be used in the base station, after UE receives this information, constantly send detectable signal according to identical mapping mode in this cycle, and send detectable signal according to different mapping modes constantly at other.
For example, in the LTE system, as shown in Figure 5, the base station disposes the transmission parameter of one group of detectable signal by signaling, and wherein these detectable signals are to transmit on last symbol of corresponding TTI.For further enhancing, the base station can also dispose the transmission parameter of second group of detectable signal by signaling, and wherein second group of detectable signal can transmit on other symbol of corresponding TTI, for example the 4th symbol and the 11st symbol; The mapping mode of second group of detectable signal and transmitting antenna can with first group identical, whether use and first group of identical mapping mode when perhaps the base station can notify UE to transmit second group of detectable signal by signaling.
Especially, for the mode of non-static configuration, the transmit time segments at delivery time place should send the action time of above-mentioned signaling less than the base station.For example semi-static ground, base station configuration UE uses identical mapping mode from many antenna transmission detectable signal at adjacent a plurality of detectable signal delivery times, and this signaling UE that should work receives till the new signaling.And transmit time segments can be limited repeatedly detectable signal transmitting time, is the transmitting time of 4 detectable signals in Fig. 2.In transmit time segments, use identical mapping mode, and between different transmit time segments, can use different mapping modes.
As shown in Figure 2, using the identical detectable signal sequence and the mapping mode of transmitting antenna to give an example at adjacent a plurality of detectable signal delivery times, is example according to the mode of precoding by many antenna transmission detectable signal with UE.If UE uses different mapping modes at adjacent a plurality of detectable signal delivery times, then relatively with the same map pattern, the base station can obtain the pairing channel situation of each precoding vector within a short period of time, help comparatively reasonably dispatching, this method not needing by uniting the UE that estimation strengthens receptivity, such as the UE of center of housing estate relatively to be suitable for.If UE uses identical mapping mode at adjacent a plurality of detectable signal delivery times, then because UE has used identical precoding vector at continuous a plurality of detectable signal delivery times, therefore can unite a plurality of detectable signals are detected the precision that improves detection, this method relatively is suitable for and need strengthens the UE that detectable signal detects performance by joint-detection, such as the UE of cell edge.
Further, the flow process of first embodiment of corresponding UE side, the detectable signal that the base station sends sends indication signaling can also comprise the transmission frequency indication of using same frequency or cline frequency to send detectable signal.Before transmission comprises that the detectable signal that uses same frequency or cline frequency to send the transmission frequency indication of detectable signal sends indication signaling, can also comprise the base station according to the channel condition information of UE feedback, the UE interference strength information to other base stations, perhaps any one in the rate travel of UE determines whether UE uses sequential frequency band or same frequency band.Determine to use the condition of same frequency band or sequential frequency band to determine that with aforementioned base station UE uses the mapping mode of identical detectable signal sequence and transmitting antenna identical.
Especially, UE can bind with employed frequency band send mode with the mapping mode of transmitting antenna mutually in the adjacent employed detectable signal sequence of a plurality of detectable signal delivery times.For example, the identical detectable signal sequence and the mapping mode of transmitting antenna are bound with the mode of using sequential frequency band to send detectable signal, when UE when adjacent a plurality of detectable signal delivery times use the mapping mode of identical detectable signal sequence and transmitting antenna, UE uses the frequency hopping mode of sequential frequency band simultaneously.
Especially, above-mentioned downlink signaling can be at down control channel, for example the Physical Downlink Control Channel in the LTE system (PDCCH, Physical Downlink Control Channel); Downstream data channel, for example Physical Downlink Shared Channel in the LTE system (PDSCH, Physical Downlink Shared Channel); Perhaps, broadcast channel for example sends on the broadcast channel in the LTE system (BCH, Broadcast Channel).
Above-mentioned static configuration mode, non-static configuration mode can be that sub-district distinctive (cell-specific) is that all UE in the sub-district adopt identical rule, perhaps UE distinctive (UE-specific), promptly the different UEs in the sub-district can adopt different rules.When different UEs is used different configuration modes, can be the different code word of these UE configurations, different frequencies for passing through, for example, different frequency bands, different subcarriers or different delivery times are avoided interference each other.
The technical scheme that adopts second embodiment to provide can make the base station determine according to the state information of UE how UE sends detectable signal, can be the send mode of UE configuration signal flexibly.For example, can carry out joint-detection to the detectable signal that the less UE of band width configuration sends.And notify UE to send the mode of detectable signal neatly.
Embodiment is corresponding with method, and the 3rd embodiment provides a kind of user equipment (UE).As shown in Figure 6, this UE specifically comprises:
Signaling receiver module, this signaling receiver module are used to receive the detectable signal transmission indication signaling that the base station sends, and this detectable signal sends the detectable signal delivery time that indication signaling comprises described UE;
Detectable signal sending module, this detectable signal sending module are used for using the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at adjacent delivery time in detectable signal transmit time segments that be provided with or the base station notice.
Further, for using at the detectable signal sequence of UE configuration and the UE of the mapping mode transmission detectable signal of transmitting antenna, this UE also comprises detectable signal sequence and transmitting antenna mapping mode memory module, and this memory module is used to be stored as the detectable signal sequence and the transmitting antenna mapping mode of UE configuration.The detectable signal sending module can obtain the mapping mode of detectable signal sequence and transmitting antenna by detectable signal sequence and transmitting antenna mapping mode memory module, and the detectable signal delivery time that sends the base station indication of indication signaling receiver module reception at detectable signal sends detectable signal.Perhaps, method embodiment is described as described above, the detectable signal of UE sends the indication signaling receiver module after receiving the indication signaling of base station, promptly pass through to change detectable signal sequence and the current detectable signal sequence of transmitting antenna mapping mode memory module storage and the mapping mode of transmitting antenna, the mapping mode transmission detectable signal of detectable signal sequence after changing by use and transmitting antenna.
Further, the detectable signal sending module also is used to use sequential frequency band or same frequency band to send many antennas detectable signal in adjacent moment, and concrete use sequential frequency band or definite method of same frequency band repeat no more as described in the method embodiment herein.
The UE that adopts the 3rd embodiment to provide can be so that the detectable signal of UE be detected flexibly.Can make UE use identical antenna transmission detectable signal at adjacent delivery time, perhaps the identical precoding mode of UE use is encoded to the detectable signal sequence and is sent.For example, can carry out joint-detection to the detectable signal that the less UE of band width configuration sends.This mainly is because in the present communication system, can not be by sending the UE that big bandwidth and high-power detectable signal obtain better estimated accuracy, for example, UE for cell edge, because the transmitted power of these UE is limited, so the base station is less for the bandwidth that these UE send the detectable signal configuration, simultaneously, because UE is far away apart from the base station, so that the base station receives the signal power of detectable signal of UE is also lower.For the less UE of these band width configuration, adopt the UE possess above-mentioned module and to have used the method that first embodiment provides, can utilize the temporal correlation of channel, adjacent in time detectable signal is carried out joint-detection to strengthen estimated performance.And,, further improved the precision of joint-detection in conjunction with the use of same frequency band or sequential frequency band.
Embodiment is corresponding with method, and the 4th embodiment provides a kind of base station.As shown in Figure 7, this base station comprises, signaling sending module, be used for sending detectable signal and send indication signaling to user equipment (UE), this detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate UE to use the mapping mode of identical or different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at the delivery time of adjacent detectable signal.
Further, this base station can also comprise detectable signal send mode determination module, this module is used for determining that using the mapping mode transmission detectable signal of identical detectable signal sequence and transmitting antenna still is the different detectable signal sequences and the mapping mode transmission detectable signal of transmitting antenna, specifically determines the corresponding content of method referring to method embodiment.Further, this detectable signal send mode determination module also is used to determine whether to use same frequency or cline frequency to send detectable signal.Concrete definite method repeats no more also referring to method embodiment herein.
The base station of adopting the 4th embodiment to provide can make the base station determine according to the state information of UE how UE sends detectable signal, can be the send mode of UE configuration signal flexibly.For example, can carry out joint-detection to the detectable signal that the less UE of band width configuration sends.And notify UE to send the mode of detectable signal neatly.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of a preferred embodiment, and module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module because of the facility of making, and also can further split into a plurality of submodules or unit because of the needs of design or layout.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.
Claims (18)
1. antenna subscriber equipment more than a kind (UE) sends the method for detectable signal, it is characterized in that,
Described UE receives the detectable signal transmission indication signaling that the base station sends, and described detectable signal sends at least two detectable signal delivery times that indication signaling comprises described UE;
In the detectable signal transmit time segments of base station that be provided with or described notice, at described delivery time, described UE uses the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at per two adjacent delivery times.
2. method according to claim 1 is characterized in that, described transmit time segments is used for the detectable signal that quantity forwarded equates with described number of antennas, perhaps is used for the detectable signal that quantity forwarded is a special value.
3. method according to claim 1 is characterized in that, the detectable signal sequence that described use is identical and the mapping mode of transmitting antenna comprise from many antenna transmission detectable signal:
Use the transmitting antenna identical to send second detectable signal at adjacent described delivery time with sending first detectable signal,
Perhaps, use and the first detectable signal sequence to be carried out the precoding vector of precoding or pre-coding matrix the second detectable signal sequence is carried out precoding and send.
4. according to the described method of arbitrary claim in the claim 1 to 3, it is characterized in that, described identical detectable signal sequence comprises with the mapping mode of transmitting antenna: be the identical detectable signal sequence of UE setting and the mapping mode of transmitting antenna, perhaps, described base station is notified to the identical detectable signal sequence of described UE and the mapping mode of transmitting antenna.
5. method according to claim 1 and 2, it is characterized in that, when two symbols that use uplink pilot time slot send detectable signal, described UE uses identical detectable signal sequence to comprise from many antenna transmission detectable signal with the mapping mode of transmitting antenna at adjacent described delivery time: use identical precoding vector or pre-coding matrix that the detectable signal sequence is carried out precoding and transmission at described two symbols, perhaps, on described two symbols, use identical transmitting antenna to send detectable signal.
6. method according to claim 1 and 2, it is characterized in that, described UE uses identical detectable signal sequence to comprise from many antenna transmission detectable signal with the mapping mode of transmitting antenna at adjacent described delivery time: described UE uses the mapping mode of identical detectable signal sequence and transmitting antenna at the described delivery time of adjacent a plurality of detectable signals, and uses sequential frequency band or same frequency band from many antenna transmission detectable signal.
7. according to the described method of claim 1 to 3, it is characterized in that, receive at described UE before the detectable signal transmission indication signaling of base station transmission, this method comprises that further described UE uses the mapping mode of default different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal.
8. a base station sends the method that detectable signal sends indication signaling, it is characterized in that, described method comprises, described base station sends detectable signal to UE and sends indication signaling, described detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate described UE to use the mapping mode of identical or different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at the delivery time of adjacent detectable signal.
9. method according to claim 8 is characterized in that, described base station sends detectable signal transmission indication signaling to UE and comprises,
Described base station sends indication signaling by described detectable signal and notifies the detectable signal sequence that described UE changes the current use of described UE and the mapping mode of transmitting antenna, perhaps,
Described base station sends described detectable signal to UE and sends indication signaling before each UE sends detectable signal.
10. method according to claim 8, it is characterized in that, send before detectable signal sends indication signaling to UE in described base station, described method also comprises, the base station is according to the channel condition information of described UE feedback, UE is to the interference strength information of other base stations, and perhaps any one in the rate travel of UE determined the detectable signal sequence of described UE use and the mapping mode of transmitting antenna.
11. method according to claim 8, it is characterized in that, described base station sends detectable signal transmission indication signaling to UE and comprises, described base station sends detectable signal to the UE of the mapping mode that uses default different detectable signal sequence and transmitting antenna and sends indication signaling, and described detectable signal sends indication signaling and is used to notify described UE to use the identical detectable signal sequence and the mapping mode of transmitting antenna.
12. method according to claim 8 is characterized in that, the described detectable signal transmission indication signaling that send comprises the special signaling of binding with the mapping mode of described detectable signal sequence and transmitting antenna.
13. method according to claim 12 is characterized in that, described special signaling comprises that notice UE sends the signaling of many group detectable signals.
14. method according to claim 8 is characterized in that, when the many groups of existence detectable signal, described detectable signal sends the indication that indication signaling also comprises the mapping mode that uses identical or different detectable signal sequence and transmitting antenna.
15. the described method of arbitrary claim in 12 is characterized in that according to Claim 8, described detectable signal sends indication signaling and also comprises the transmission frequency indication of using same frequency or cline frequency to send detectable signal.
16. method according to claim 15 is characterized in that, described base station sends detectable signal transmission indication signaling to UE and comprises,
Described base station sends indication signaling to the detectable signal that described UE sends the transmission frequency mode that changes the current use of UE, perhaps,
Described base station sends detectable signal to described UE and sends indication signaling when each UE sends detectable signal, described detectable signal sends indication signaling and comprises described transmission frequency indication.
17. a user equipment (UE) is characterized in that, comprises,
Signaling receiver module, described signaling receiver module are used to receive the detectable signal transmission indication signaling that the base station sends, and described detectable signal sends at least two detectable signal delivery times that indication signaling comprises described UE;
The detectable signal sending module, described detectable signal sending module is used in the detectable signal transmit time segments of base station that be provided with or described notice, at described delivery time, use the mapping mode of identical detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at adjacent described delivery time.
18. base station, it is characterized in that, comprise, signaling sending module, be used for sending detectable signal and send indication signaling to user equipment (UE), described detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate described UE to use the mapping mode of identical or different detectable signal sequence and transmitting antenna from many antenna transmission detectable signal at the delivery time of adjacent detectable signal.
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