CN102075298B - 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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Abstract
对于用户设备UE使用多天线发送探测信号的情况，本发明提供了可以提高探测信号检测精度的方法，针对不同环境的UE，可以灵活使用。包括UE接收基站发送的探测信号发送指示信令，该探测信号发送指示信令包括该UE的探测信号发送时刻；在设置的或基站通知的探测信号发送时段内，该UE在相邻的基站指示的发送时刻使用相同的探测信号序列与发送天线的映射方式从多天线发送探测信号。对应UE侧实施的方法，本发明也相应提供了基站侧的方法以及对应的用户设备和基站。
For the situation that user equipment UE uses multiple antennas to send sounding signals, the present invention provides a method that can improve detection accuracy of sounding signals, and can be used flexibly for UEs in different environments. Including that the UE receives the sounding signal transmission indication signaling sent by the base station, and the sounding signal transmission indication signaling includes the sounding signal transmission time of the UE; within the set or the sounding signal transmission period notified by the base station, the UE indicates at the adjacent base station The same mapping method between the sounding signal sequence and the sending antenna is used to send sounding signals from multiple antennas at the sending time. Corresponding to the method implemented on the UE side, the present invention also provides the method on the base station side and the corresponding user equipment and base station.
Description
Technical field
The present invention relates to the communications field, be specifically applicable to the technical field sending for realizing the detectable signal of Channel Detection.
Background technology
In prior art, base station need be by knowing that broad-band channel information completes the scheduling to user equipment (UE), and detectable signal is to make base station know up broad-band channel information important information, therefore obtaining detectable signal is between base station and subscriber equipment, to carry out the important step of information interaction.
Be below the mode that in prior art, base station obtains broad-band channel information:
S001, the information of the resource that UE uses about detectable signal is notified in base station by downlink signaling, and wherein this information comprises the delivery time of detectable signal, the code sequence that sends frequency band, transmitting antenna, detectable signal, transmitted power etc.;
S002, UE receives above-mentioned downlink signaling, and sends detection reference signal in the indicated resource of the information comprising at above-mentioned downlink signaling;
S003, detectable signal is detected in base station in above-mentioned resource, can be informed in the broad-band channel information in respective resources.
At present, along with the continuous evolution of wireless communication system, the technology adopting is also constantly updated, and therefore also correspondingly the design of detectable signal is had higher requirement.With long evolving system (LTE, Long TermEvolution) be example, detection reference signal (SRS in LTE system, Sounding Reference Signal) be exactly a kind of detectable signal of knowing bandwidth channel information for base station, in current LTE system, at maximum configurable 2 antennas of UE side, UE only need send in turn SRS on 2 antennas, by repeatedly sending and can make base station know up broad-band channel information; And the follow-up continuous evolution along with technology, in following LTE-Advanced system, in the configurable number of antennas of UE side, also can increase, for example reach 4, and can in LTE-Advanced system, apply more advanced technologies, precoding technique for example, this application in detectable signal has increased the complexity of design detectable signal.
To sum up, for the many antennas of user equipment (UE), use the scene of 2 or 2 above antenna transmission detectable signals, for the development of reply technology, the send mode that detectable signal more flexibly need to be provided with solve in current technology, exist acquisition environment is analyzed to the lower technical problem of detection accuracy insufficient and that produce.
Summary of the invention
For above-mentioned technical problem, various embodiments of the present invention object is to provide a kind of method that can improve detectable signal accuracy of detection, for the UE of varying environment, can use flexibly.
The embodiment of the invention discloses a kind of method that UE side is implemented, comprise: UE receives the detectable signal transmission indication signaling that 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 arrange or base station notice, for above-mentioned detectable signal delivery time, this UE is used the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas at the delivery time of adjacent base station indication.
The embodiment of the invention also discloses a kind of method that base station side is implemented, comprise: 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 and uses the mapping mode of identical or different detectable signal sequence and transmitting antenna to send detectable signal from many antennas at the delivery time of adjacent detectable signal.
Corresponding method embodiment, apparatus of the present invention embodiment also provides subscriber equipment, comprising: signaling receiver module, the detectable signal transmission indication signaling sending for receiving base station, this detectable signal sends the detectable signal delivery time that indication signaling comprises described UE; Detectable signal sending module, in the detectable signal transmit time segments in base station that arrange or described notice, is used the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas at adjacent delivery time.
Simultaneously, apparatus of the present invention embodiment also corresponding method embodiment provides base station, comprise: signaling sending module, for sending detectable signal to user equipment (UE), send indication signaling, this detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate UE and uses the mapping mode of identical or different detectable signal sequence and transmitting antenna to send detectable signal from many antennas at the delivery time of adjacent detectable signal.
The technical scheme that adopts various embodiments of the present invention to provide, can implement detection method flexibly to UE for the state of UE, improves the accuracy of detection of detectable signal.
Accompanying drawing explanation
Fig. 1 is first embodiment of the invention flow chart;
Fig. 2 is that the embodiment of the present invention is used the mapping mode of identical detectable signal sequence and transmitting antenna to send the schematic diagram of detectable signal;
Fig. 3 is that first embodiment of the invention is specifically applied in the schematic diagram that combines to send detectable signal sequence on 2 symbols with identical transmitting antenna;
Fig. 4 (a) is used discontinuous not same frequency band for first embodiment of the invention and sends detectable signal example schematic;
Fig. 4 (b) is used sequential frequency band for first embodiment of the invention and sends detectable signal example schematic;
Fig. 4 (c) is used same frequency band for first embodiment of the invention and sends detectable signal example schematic;
Fig. 5 is second embodiment of the invention LTE system applies example schematic;
Fig. 6 is embodiment of the present invention UE structure chart;
Fig. 7 is embodiment of the present invention architecture of base station figure.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
For UE side, the first embodiment, as shown in Figure 1, the flow process of the first embodiment mainly comprises:
S101, user equipment (UE) receives the detectable signal transmission indication signaling that 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 arrange or above-mentioned notice, for above-mentioned delivery time, UE is used the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas at adjacent delivery time.
Wherein, detectable signal sends indication signaling can pass through high-level signaling, for example, SRS configuration signal message bearing, the delivery time of the detectable signal of UE refers to that the UE that needs of base station indication sends the moment of detectable signal.Detectable signal is for making base station know the signal of uplink channel information, for example the detection reference signal in LTE system (SRS, Sounding Reference Signal).The transmit time segments of detectable signal refers to, 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 arranging in UE.For example, transmit time segments can be the transmit time segments that quantity forwarded equals number of transmit antennas object detectable signal, and particularly, for example, for the UE that has 4 antennas, its transmit time segments can be to send 4 periods that detectable signal need be used.Transmit time segments can also be that quantity forwarded is the transmit time segments of the detectable signal of special value, for example in UE, arrange for sending the transmit time segments of 3 detectable signals or 4,5 detectable signals.
The mapping mode of detectable signal sequence and transmitting antenna refers to which antenna is for sending the send mode of which detectable signal or by that mode, detectable signal sequence being carried out precoding and sent detectable signal.The concrete mode for employing precoding sends the scene of detectable signals from many antennas, 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.
At adjacent delivery time, use the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas, as shown in Figure 2, be exemplified below, the first delivery time is adjacent with the second delivery time, the first delivery time is used for sending the first detectable signal, UE is used the transmitting antenna identical with the first delivery time to send the second detectable signal at the second delivery time, by that analogy, the signal number sending is not limited to 2, adjacently refer to that delivery time is adjacent, delivery time is arranged in transmit time segments, for sending detectable signal.
Or, at adjacent delivery time, use the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas, also can be exemplified as, at the 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 the second detectable signal the second detectable signal sequence of the second delivery time transmission adjacent, and this send mode is present in the scene that sends detectable signal by precoding more.
Particularly, in the first embodiment, UE can be used the detectable signal sequence of base station notice and the mapping mode of transmitting antenna, also can use the detectable signal sequence that arranges in 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 is used detectable signal to send the detectable signal sequence of the first indication signaling indication and the mapping mode of transmitting antenna before sending the second indication signaling, to be base station send indication signaling by detectable signal sends notice to UE, notifies detectable signal sequence that this UE changes current use and the mapping mode of transmitting antenna.For example, in UE, default setting is used different detectable signal sequences and the mapping mode of transmitting antenna, base station can send signaling UE by detectable signal and use 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, base station also can be notified the UE transmission detectable signal sequence that detectable signal is used and the mapping mode of transmitting antenna in the following way: before each UE transmission detectable signal, notify UE to send and visit the detectable signal sequence of detectable signal use and the mapping mode of transmitting antenna
The method of using the first embodiment to provide, in concrete application, for example, when using two symbols of uplink pilot time slot to send detectable signal, UE is used identical detectable signal sequence to comprise from many antennas transmission detectable signals with the mapping mode of transmitting antenna at adjacent delivery time: at above-mentioned two symbols, use identical precoding vector or pre-coding matrix that detectable signal sequence is carried out precoding and sent, or, on above-mentioned two symbols, with identical transmitting antenna, send detectable signal, as shown in Figure 3.
Further, in conjunction with sending frequency band, in the first embodiment, in the situation that UE is used the mapping mode of identical detectable signal sequence and antenna to send detectable signal, can also use further sequential frequency band or same frequency band to send detectable signal from many antennas.UE can be used the sequential frequency band of default setting or same frequency band to send detectable signal, in conjunction with adjacent moment, uses identical detectable signal sequence and the mapping mode of transmitting antenna.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, for example in LTE system, by Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH), transmit.The transmission frequency mode that the transmission frequency indication UE comprising by this indication signaling is used, this transmission frequency indication is used for notifying UE to use sequential frequency band or same frequency band to send detectable signal.Further, base station sends by the detectable signal that comprises above-mentioned transmission frequency indication sending the detectable signal transmission indication signaling that indication signaling changes the transmission frequency mode of the current use of UE.Or base station sends detectable signal to UE and sends indication signaling when each UE sends detectable signal, this detectable signal sends indication signaling and comprises transmission frequency indication.
The technical scheme that adopts the first embodiment to provide, can make UE use identical antenna to send detectable signal at adjacent delivery time, or UE is used identical precoding mode that detectable signal sequence is encoded and sent.Owing to adopting above-mentioned send mode, can be the send mode of UE configuration signal flexibly.The detectable signal that for example, can send the less UE of band width configuration carries out joint-detection.This is mainly due in current communication system, can not obtain by sending large bandwidth and high-power detectable signal the UE of better estimated accuracy, for example, UE for cell edge, because the transmitted power of these UE is limited, thus base station for the bandwidth that these UE send detectable signals configuration less, simultaneously, because UE is far away apart from base station, so that 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 the first embodiment to provide, can utilize the temporal correlation of channel, and adjacent in time detectable signal is carried out to joint-detection to strengthen estimated performance.It is example that the LTE system of take sends detectable signal, as shown in Fig. 4 (a), adjacent a plurality of detectable signal delivery times are used 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 base station.When the rate travel of UE is lower, the time interval in these two moment 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 respectively the SRS of 8 PRB at every turn, to obtain better estimated accuracy.
The requirement of joint-detection is that adjacent in time repeatedly detectable signal need to send according to identical transmitting antenna pattern, and the time interval that these detectable signals send is enough little, preferably, the bandwidth that these detectable signals are used should be continuous or identical.Therefore the method that adopts the first embodiment to provide, the detectable signal that can send UE carries out joint-detection.Solved in prior art bandwidth that the adjacent detectable signal due to UE uses discontinuous cause cannot carry out joint-detection to improve the technical problem of estimated accuracy.
Further, for combining the application of using sequential frequency band or same frequency band to send detectable signal, can strengthen further accuracy of detection.Particularly, take LTE system as example, in Fig. 4 (a), at adjacent detectable signal delivery time, visit on the basis of using identical transmitting antenna or precoding mode, if the bandwidth of detectable signal is continuous, the UE in figure for example, its frequency band at the adjacent SRS delivery time SRS of part is continuous, for example n
sRSuse PRB8～1 5, n at=2 o'clock
sRSuse PRB16～23 at=3 o'clock, be convenient to detect.Yet, in adjacent moment, with sequential frequency band, send the situation that detectable signal has randomness, same as shown in Fig. 4 (a), the frequency band that after UE only has in every 4 detectable signal delivery times, 2 delivery times are used is only continuous.If the technical scheme of the use sequential frequency band that employing the first embodiment further provides, can further strengthen the flexibility of joint-detection.If for example adopt the present embodiment, can be so that the bandwidth of the detectable signal that UE sends at other delivery times of adjacent detectable signal be also continuous, as shown in Fig. 4 (b), at n
sRSthe frequency band that the detectable signal in=0～3 moment is used is all continuous, is convenient to like this receiver and obtains more accurate channel estimating performance.
If UE is used the frequency-hopping mode of same frequency band at adjacent a plurality of detectable signal delivery times, also can strengthen the property.Although prior art can be supported the detectable signal sending mode of same frequency band, i.e. frequency hopping not, but cannot survey the channel conditions in broadband, if and supported frequency hopping, situation for frequency hopping, can be referring to as shown in Fig. 4 (a), adjacent two continuously constantly, detectable signal has occupied the situation of different bandwidth.For example, for UE, n
sRSuse PRB0～7, n at=0 o'clock
sRSuse PRB24～31 at=1 o'clock, now also cannot bring good performance for joint-detection.If the method for using same frequency band to send in adjacent moment that adopts the first embodiment to provide, as shown in Fig. 4 (c), n for example
sRSuse PRB0～7, n at=0 o'clock
sRSstill use PRB0～7 at=1 o'clock, the bandwidth of the detectable signal sending at adjacent detectable signal delivery time is identical, 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 accurate channel estimating performance.
The second embodiment, the 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, the method comprises, 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 and uses the mapping mode of identical or different detectable signal sequence and transmitting antenna to send detectable signal from many antennas at the delivery time of adjacent detectable signal.
Wherein, delivery time, transmit time segments, detectable signal, in the mapping mode of detectable signal sequence and transmitting antenna and the first embodiment, the implication of same concept is identical.Flow process is also corresponding, because this embodiment solves with the first embodiment the corresponding technological means of base station side that same technical problem provides.
Different from UE side in the first embodiment is, base station is before sending detectable signal transmission indication signaling to UE, can be according to channel condition information, the interference strength information of UE to other base stations of UE feedback, or any one in the rate travel of UE determined detectable signal sequence that UE is used and the mapping mode of transmitting antenna.Particularly, base station determines that UE is used the condition of the mapping mode of identical detectable signal sequence and transmitting antenna can comprise any one in following concrete example:
The channel status of condition 1, UE feedback.Reference Signal Received Power (the RSRP that for example UE feeds back, Reference Signal Received Power) lower than the thresholding of setting, or the power climbing space (power headroom) of UE feedback, lower than the thresholding of setting, just illustrates that the channel status of UE is poor;
Or
Or
The rate travel of UE is detected in condition 3, base station, for example the upward signal of UE is detected in 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 the rate travel of UE is lower, now need to strengthen detection performance by detecting the detectable signal of a plurality of moment transmissions, therefore adopt identical mapping mode.
Do not meet definite different detectable signal sequences and the mapping mode of transmitting antenna of using of UE of above-mentioned condition.
The base station notice UE that the second embodiment provides is used the method for the mapping mode of detectable signal sequence and transmitting antenna to be also applicable to the base station in the first embodiment.The method of the base station notice UE change detectable signal sequence of default setting and the mapping mode of transmitting antenna is also applicable to the base station of the first embodiment.
Particularly, many antennas of implementation method use the mapping mode of identical or different detectable signal sequence and transmitting antenna to send detectable signal from to(for) a plurality of detectable signal delivery times adjacent is described below.
A kind of method is that the mode by static configuration realizes.For example, by UE, use identical or different " mapping mode of detectable signal sequence and transmitting antenna " to realize regularly at continuous a plurality of detectable signal delivery times, this emission mode can be held fixed configurations at UE.Particularly, the fixedly occupation mode of UE can be by known to 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, with identical precoding, send detectable signal sequence regularly, or on 2 symbols, with identical transmitting antenna, combine to send detectable signal sequence regularly, as shown in Figure 3.
Another kind method is, the mode by non-static configuration realizes at adjacent a plurality of detectable signal delivery times uses the mapping mode of identical or different detectable signal sequence and transmitting antenna to send detectable signals from many antennas.Wherein, non-static state comprises semi-static and dynamic two kinds of situations, semi-staticly refers to that notice UE in base station was used the mapping mode of having notified before new signaling arrives, or is the mapping mode of the current use of UE; Dynamically refer to that base station is when UE sends SRS, each mapping mode of all notifying its use of UE.The non-static configuration method of the detectable signal sequence that base station notice UE is used at adjacent a plurality of detectable signal delivery times and the mapping mode of transmitting antenna can comprise:
The detectable signal sequence that method 1. base stations need be used UE and the mapping mode of transmitting antenna pass through signaling UE:
For example, UE can be notified by downlink signaling by the definite detectable signal in base station and the mapping mode of transmitting antenna in base station, after UE receives, according to corresponding mapping mode, from many antennas, sends detectable signals.Alternatively, before notice UE, as previously mentioned, base station can be according to channel condition information, the interference strength information of UE to other base stations of UE feedback, or any one in the rate travel of UE determined detectable signal sequence that UE is used and the mapping mode of transmitting antenna.
The detectable signal sequence that method 2. system default UE are used and the mapping mode of transmitting antenna, the another kind of mode different with the mapping mode of transmitting antenna from the detectable signal sequence of UE use of system default used by signaling UE in base station.As described in the first embodiment, base station sends indication signaling notice UE by detectable signal and changes the detectable signal sequence of default setting in UE and the mapping mode of transmitting antenna, or base station notice UE is used the information in the use moment of another kind of mapping mode, notifies UE what constantly adopts the mode different from current mapping mode to send detectable signal at.For example, system default or default setting UE are used different detectable signal sequences and the mapping mode of transmitting antenna, when UE does not receive that the change detectable signal sequence of base station transmission and the mapping mode signaling of transmitting antenna or UE is not received the delivery time of the identical detectable signal sequence of base station notice and the mapping mode of transmitting antenna, UE sends detectable signal according to different mapping modes.When expectation UE in base station 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 base station, after UE receives, at k detectable signal delivery time, according to identical mapping mode, sends detectable signal.Or the information notice UE in the cycle of same map mode will be used in base station, and UE receives after this information, in this cycle, constantly according to identical mapping mode, sends detectable signal, and constantly according to different mapping modes, sends detectable signal at other.
The transmission parameter of detectable signal can be organized by different signal deployments in method 4. base stations more, and will organize the information notice UE whether detectable signal is identical with the mapping mode of transmitting antenna more.
For example, in LTE system, as shown in Figure 5, base station is by the transmission parameter of one group of detectable signal of signal deployment, and wherein these detectable signals are to transmit on last symbol of corresponding TTI.For further enhancing, the transmission parameter of second group of detectable signal of signal deployment can also be passed through in base station, 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, or whether base station uses the mapping mode identical with first group can notify UE to transmit second group of detectable signal by signaling time.
Especially, for the mode of non-static configuration, the transmit time segments at delivery time place should be less than the action time that base station sends above-mentioned signaling.For example base station semi-statically configuration UE at adjacent a plurality of detectable signal delivery times, use identical mapping mode to send detectable signals from many antennas, this signaling should work till UE receives new signaling.And transmit time segments can be limited repeatedly detectable signal transmitting time, it in Fig. 2, is the transmitting time of 4 detectable signals.In transmit time segments, use identical mapping mode, and can use different mapping modes between different transmit time segments.
As shown in Figure 2, at adjacent a plurality of detectable signal delivery times, use the mapping mode of identical detectable signal sequence and transmitting antenna to give an example, it is example that the UE of take sends detectable signals according to the mode of precoding by many antennas.If UE is used different mapping modes at adjacent a plurality of detectable signal delivery times, with the comparison of same map pattern, base station can obtain the corresponding channel situation of each precoding vector within a short period of time, be conducive to comparatively reasonably dispatch, the method is relatively suitable for not needing to strengthen by combining estimation the UE of receptivity, such as the UE of center of housing estate.If UE is used identical mapping mode at adjacent a plurality of detectable signal delivery times, because UE has been used identical precoding vector at continuous a plurality of detectable signal delivery times, therefore can combine the precision that a plurality of detectable signals is detected to improve detection, the method is relatively suitable for strengthening the UE that detectable signal detects performance by joint-detection, such as the UE of cell edge.
Further, the flow process of the first embodiment of corresponding UE side, the detectable signal that 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 that base station is according to channel condition information, the interference strength information of UE to other base stations of UE feedback, or any one in the rate travel of UE determines whether UE uses sequential frequency band or same frequency band.Determine and use the condition of same frequency band or sequential frequency band to determine that with aforementioned base station UE is used the mapping mode of identical detectable signal sequence and transmitting antenna identical.
Especially, the detectable signal sequence that UE is used at adjacent a plurality of detectable signal delivery times can be bound with used frequency band send mode mutually with the mapping mode of transmitting antenna.For example, 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 is when adjacent a plurality of detectable signal delivery times are used the mapping mode of identical detectable signal sequence and transmitting antenna, UE is used 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 LTE system (PDCCH, Physical Downlink Control Channel); Downstream data channel, for example Physical Downlink Shared Channel in LTE system (PDSCH, Physical Downlink Shared Channel); For example, or broadcast channel, sends on the broadcast channel in LTE system (BCH, Broadcast Channel).
Above-mentioned static configuration mode, non-static configuration mode can be that community distinctive (cell-specific) is that all UE in community adopt identical rule, or UE distinctive (UE-specific), the different UEs in community can adopt different rules.When different UEs is used different configuration modes, can be for by configure different code words, different frequencies for these UE, for example, different frequency bands, different subcarriers or different delivery times, avoid interference each other.
The technical scheme that adopts the second embodiment to provide, can make 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.The detectable signal that for example, can send the less UE of band width configuration carries out joint-detection.And notify neatly UE to send the mode of detectable signal.
Corresponding with embodiment of the method, the 3rd embodiment provides a kind of user equipment (UE).As shown in Figure 6, this UE specifically comprises:
Signaling receiver module, the detectable signal transmission indication signaling that this signaling receiver module sends for receiving base station, this detectable signal sends the detectable signal delivery time that indication signaling comprises described UE;
Detectable signal sending module, this detectable signal sending module, in detectable signal transmit time segments that arrange or base station notice, is used the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas at adjacent delivery time.
Further, for the UE using at the detectable signal sequence of UE configuration and 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 for being stored as detectable signal sequence and the transmitting antenna mapping mode of UE configuration.Detectable signal sending module can obtain by detectable signal sequence and transmitting antenna mapping mode memory module the mapping mode of detectable signal sequence and transmitting antenna, and the detectable signal delivery time that sends the base station indication of indication signaling receiver module reception at detectable signal sends detectable signal.Or, as described in preceding method embodiment, the detectable signal of UE sends indication signaling receiver module after receiving the indication signaling of base station, by changing 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 detectable signal sequence after changing by use and the mapping mode of transmitting antenna send detectable signal.
Further, detectable signal sending module is also for using 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, as described in embodiment of the method, repeat no more 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 to send detectable signal at adjacent delivery time, or UE is used identical precoding mode that detectable signal sequence is encoded and sent.The detectable signal that for example, can send the less UE of band width configuration carries out joint-detection.This is mainly due in current communication system, can not obtain by sending large bandwidth and high-power detectable signal the UE of better estimated accuracy, for example, UE for cell edge, because the transmitted power of these UE is limited, thus base station for the bandwidth that these UE send detectable signals configuration less, simultaneously, because UE is far away apart from base station, so that 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 the first embodiment provides, can utilize the temporal correlation of channel, adjacent in time detectable signal is carried out to joint-detection to strengthen estimated performance.And, in conjunction with the use of same frequency band or sequential frequency band, further improved the precision of joint-detection.
Corresponding with embodiment of the method, the 4th embodiment provides a kind of base station.As shown in Figure 7, this base station comprises, signaling sending module, for sending detectable signal to user equipment (UE), send indication signaling, this detectable signal sends the mapping mode that indication signaling comprises detectable signal sequence and transmitting antenna, is used to indicate UE and uses the mapping mode of identical or different detectable signal sequence and transmitting antenna to send detectable signal from many antennas 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 identical detectable signal sequence and the mapping mode of transmitting antenna to send detectable signal or the mapping mode of different detectable signal sequences and transmitting antenna transmission detectable signal for determining, the method for specifically determining is referring to the corresponding content of embodiment of the method.Further, this detectable signal send mode determination module is also used same frequency or cline frequency to send detectable signal for determining whether.Concrete definite method, also referring to embodiment of the method, repeats no more herein.
The base station that adopts the 4th embodiment to provide, can make 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.The detectable signal that for example, can send the less UE of band width configuration carries out joint-detection.And notify neatly UE to send the mode of detectable signal.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of a preferred embodiment, the module in 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 in embodiment can be described and be distributed in the device of embodiment according to embodiment, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module because of the facility of manufacturing, also can be because of design or layout need to further split into a plurality of submodules or unit.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (15)
1. antenna user more than (UE) sends a method for detectable signal, it is characterized in that,
Described UE receives the detectable signal transmission indication signaling that 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 arrange or described notice, for described delivery time, described UE is used the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas at every two adjacent delivery times;
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, or described base station is notified to the identical detectable signal sequence of described UE and the mapping mode of transmitting antenna;
Described UE is used the mapping mode of identical detectable signal sequence and transmitting antenna to comprise from many antennas transmission detectable signals at every two adjacent delivery times:
Described UE sends the first detectable signal at first delivery time, at the second delivery time, use the transmitting antenna identical with sending the first detectable signal to send the second detectable signal, or, described UE sends the first detectable signal at first delivery time, the precoding vector or the pre-coding matrix that the first detectable signal sequence are carried out to precoding in the second delivery time use carry out precoding and send the second detectable signal sequence, and described the first delivery time is adjacent with the second delivery time.
2. method according to claim 1, is characterized in that, the detectable signal that described transmit time segments equates with described number of antennas for quantity forwarded, or the detectable signal that is special value for quantity forwarded.
3. method according to claim 1 and 2, it is characterized in that, when using two symbols of uplink pilot time slot to send detectable signal, described UE is used identical detectable signal sequence to comprise from many antennas transmission detectable signals with the mapping mode of transmitting antenna at adjacent described delivery time: at described two symbols, use identical precoding vector or pre-coding matrix that detectable signal sequence is carried out precoding and sent, or, on described two symbols, with identical transmitting antenna, send detectable signal.
4. method according to claim 1 and 2, it is characterized in that, described UE is used identical detectable signal sequence to comprise from many antennas transmission detectable signals with the mapping mode of transmitting antenna at adjacent described delivery time: described UE is used 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 to send detectable signals from many antennas.
5. method according to claim 1 and 2, it is characterized in that, receive the detectable signal transmission indication signaling of base station transmission at described UE before, the method further comprises, described UE is used the mapping mode of default different detectable signal sequence and transmitting antenna to send detectable signals from many antennas.
6. 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 and uses the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas at the delivery time of adjacent detectable signal;
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, or described base station is notified to the identical detectable signal sequence of described UE and the mapping mode of transmitting antenna;
Described UE is used the mapping mode of identical detectable signal sequence and transmitting antenna to comprise from many antennas transmission detectable signals at every two adjacent delivery times:
Described UE sends the first detectable signal at first delivery time, at the second delivery time, use the transmitting antenna identical with sending the first detectable signal to send the second detectable signal, or, described UE sends the first detectable signal at first delivery time, the precoding vector or the pre-coding matrix that the first detectable signal sequence are carried out to precoding in the second delivery time use carry out precoding and send the second detectable signal sequence, and described the first delivery time is adjacent with the second delivery time.
7. method according to claim 6, 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 detectable signal sequence that described UE changes the current use of described UE and the mapping mode of transmitting antenna, or,
Described base station sends before detectable signal at each UE, sends described detectable signal send indication signaling to UE.
8. method according to claim 6, it is characterized in that, before sending detectable signal transmission indication signaling to UE in described base station, described method also comprises, base station is according to the channel condition information of described UE feedback, the interference strength information of UE to other base stations, or any one in the rate travel of UE determined detectable signal sequence that described UE is used and the mapping mode of transmitting antenna.
9. method according to claim 6, is characterized in that, described in send detectable signal to send indication signaling to comprise the special signaling of binding with the mapping mode of described detectable signal sequence and transmitting antenna.
10. method according to claim 9, is characterized in that, described special signaling comprises that notice UE sends the signaling of many group detectable signals.
11. methods according to claim 6, is characterized in that, when there is many group detectable signals, 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.
12. according to the method described in arbitrary claim in claim 5 to 10, it is characterized in that, described detectable signal sends indication signaling and also comprises the transmission frequency indication of using same frequency or cline frequency to send detectable signal.
13. methods according to claim 12, is characterized in that, described base station sends detectable signal transmission indication signaling to UE and comprises,
The detectable signal that described base station sends to described UE the transmission frequency mode that changes the current use of UE sends indication signaling, or,
Described base station sends detectable signal to described UE and sends indication signaling when each UE sends detectable signal, and described detectable signal sends indication signaling and comprises described transmission frequency indication.
14. 1 kinds of user equipment (UE)s, is characterized in that, comprise,
Signaling receiver module, the detectable signal transmission indication signaling that described signaling receiver module sends for receiving base station, described detectable signal sends at least two detectable signal delivery times that indication signaling comprises described UE;
Detectable signal sending module, described detectable signal sending module is in the detectable signal transmit time segments in base station that arrange or described notice, for described delivery time, at adjacent described delivery time, use the mapping mode of identical detectable signal sequence and transmitting antenna to send detectable signal from many antennas;
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, or described base station is notified to the identical detectable signal sequence of described UE and the mapping mode of transmitting antenna;
Described UE is used the mapping mode of identical detectable signal sequence and transmitting antenna to comprise from many antennas transmission detectable signals at every two adjacent delivery times:
Described UE sends the first detectable signal at first delivery time, at the second delivery time, use the transmitting antenna identical with sending the first detectable signal to send the second detectable signal, or, described UE sends the first detectable signal at first delivery time, the precoding vector or the pre-coding matrix that the first detectable signal sequence are carried out to precoding in the second delivery time use carry out precoding and send the second detectable signal sequence, and described the first delivery time is adjacent with the second delivery time.
15. 1 kinds of base stations, it is characterized in that, comprise, signaling sending module, for sending detectable signal to user equipment (UE), send 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 and uses the mapping mode of identical or different detectable signal sequence and transmitting antenna to send detectable signal from many antennas at the delivery time of adjacent detectable signal;
Wherein, 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, or described base station is notified to the identical detectable signal sequence of described UE and the mapping mode of transmitting antenna;
Described UE is used the mapping mode of identical detectable signal sequence and transmitting antenna to comprise from many antennas transmission detectable signals at every two adjacent delivery times:
Described UE sends the first detectable signal at first delivery time, at the second delivery time, use the transmitting antenna identical with sending the first detectable signal to send the second detectable signal, or, described UE sends the first detectable signal at first delivery time, the precoding vector or the pre-coding matrix that the first detectable signal sequence are carried out to precoding in the second delivery time use carry out precoding and send the second detectable signal sequence, and described the first delivery time is adjacent with the second delivery time.
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| CN102237908B (en) * | 2011-08-12 | 2014-12-17 | 电信科学技术研究院 | Data transmission method and equipment |
| CN103259612B (en) * | 2012-02-17 | 2017-11-14 | 中兴通讯股份有限公司 | The indicating means and device that detectable signal is sent |
| EP2876952B1 (en) | 2012-08-15 | 2018-12-05 | Huawei Technologies Co., Ltd. | Detection signal sending and receiving method, base station, and user equipment |
| CN105471771B (en) * | 2014-08-28 | 2021-01-12 | 北京三星通信技术研究有限公司 | Method and device for acquiring channel direction information |
| CN105812088A (en) * | 2014-12-30 | 2016-07-27 | 中兴通讯股份有限公司 | Sounding reference signal (SRS) sending method, SRS sending device, receiving method and receiving device |
| CN109842474B (en) * | 2017-11-28 | 2020-11-27 | 华为技术有限公司 | Transmission instruction method, device and system, and storage medium |
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| CN101500242A (en) * | 2008-02-01 | 2009-08-05 | 大唐移动通信设备有限公司 | Method and apparatus for configuring uplink detection reference signal |
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| CN1572073A (en) * | 2001-08-20 | 2005-01-26 | 高通股份有限公司 | Method and system for use of external decoders in a broadcast service communication system |
| CN101500242A (en) * | 2008-02-01 | 2009-08-05 | 大唐移动通信设备有限公司 | Method and apparatus for configuring uplink detection reference signal |
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