CN107820258A - Sending method, synchronous method, base station and the UE of signal - Google Patents

Sending method, synchronous method, base station and the UE of signal Download PDF

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Publication number
CN107820258A
CN107820258A CN201610824695.4A CN201610824695A CN107820258A CN 107820258 A CN107820258 A CN 107820258A CN 201610824695 A CN201610824695 A CN 201610824695A CN 107820258 A CN107820258 A CN 107820258A
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China
Prior art keywords
wave beam
subframe
signal
homochronousness
base station
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CN201610824695.4A
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Chinese (zh)
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贺传峰
刘建琴
曲秉玉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201610824695.4A priority Critical patent/CN107820258A/en
Publication of CN107820258A publication Critical patent/CN107820258A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present embodiments relate to the sending method of signal, synchronous method, base station and UE, the sending method includes：Base station determines the first beam set, and the first beam set includes at least one first wave beam；The first kind synchronizing signal and the second homochronousness signal of the first wave beam are sent in first kind subframe；Each first kind synchronizing signal of wave beam and the second homochronousness signal of each wave beam have default time-frequency location respectively in first kind subframe；The wave beam identification information that at least one UE is sent is received, wave beam identification information is used to indicate wave beam corresponding to the signal that UE is detected；According to wave beam identification information, the second beam set is determined, the second beam set includes at least one second wave beam；The second homochronousness signal of the second wave beam is sent in the second class subframe.Therefore in the embodiment of the present invention, UE can carry out time-frequency slightly synchronously according to the time-frequency location relation of two homochronousness signals in a subframe, UE Fast synchronization when can realize beam switchover.

Description

Sending method, synchronous method, base station and the UE of signal
Technical field
The present invention relates to the communications field, more particularly to the sending method of signal, synchronous method, base station and user equipment (User Equipment, UE).
Background technology
Base station generally includes two kinds of scenes of low frequency and high frequency when carrying out signal transmitting.
Under the scene of low frequency, the path loss of wireless signal is smaller, and the wave beam that each antenna port is formed is such as Fig. 1 institutes The broad beam shown, therefore can cover the user of whole cell, its broadcast channel, system message, beep-page message etc. can pass through Broad beam is launched so as to reach the good covering to community user.
Under the scene of high frequency, the path loss increase of wireless signal, if still launched with broad beam, the covering of cell Scope is very small, can not cover distant UE, as shown in Figure 2.
Under the scene of high frequency, in order that wireless signal covers distant UE, antenna spacing can be reduced, so that The open ended antenna number of unit area increases, and utilizes extensive (massive) multiple-input and multiple-output (Multiple-Input Multiple-Output, MIMO) beam forming (beamforming) technology form very high antenna gain to make up path Loss.Massive MIMO antenna can reach a lot, or even up to a hundred, while big antenna gain is formed, formation The narrower in width of wave beam (beam), narrow beam can only covering part region, all users that can not be covered in cell, example In Fig. 3, wave beam B2 can only cover UE1, and UE2 can not be covered by wave beam B2.
Under the scene that high frequency, multiple beam is sent, in order to be the user service in cell, different wave beams may need point When need the common signal channels such as broadcast channel, synchronizing channel to cover cell for the user service in cell, under each wave beam to own User so that user in cell obtains synchronous and necessary system message, so as to access cell.
Prior art is using a kind of method of bicyclic wave beam access, the network for UE access narrow beams transmissions.
Bicyclic wave beam access procedure includes the first loop and the second loop.First loop (circulation) wave beam is found for cell (discovery), UE carries out full cell scan by the cycle of the first loop, the related synchronizing channel of the first loop of detection and public Channel.For example, the cycle of the first loop is 40ms, totally 8 broadcast beams in a cycle, base station is per 40ms by finding subframe (Discovery subframe) sends 8 broadcast beam timesharing one time, each beams carry synchronizing channel and broadcast channel (physical broadcast channel, PBCH), detection and Master Information Block (the Master Information for UE Block, MIB) acquisition.UE feeds back corresponding beam information to base station based on the channel under the beam detected.
Second loop (circulation) is on the basis of the first loop beam scanning, beam information that base station is fed back based on UE, only It is scanned to the wave beam (sector beam) that UE be present, such as only sends wave beam to B2, B5 position, as shown in Figure 4. Other radio frames in cycle of first loop in addition to Discovery subframe, sector beam synchronizing channel and Common signal channel repeats to send, wherein, the cycle of the first loop is also referred to as the outer shroud cycle.
Another contrast scheme is single loop beam access schemes, i.e. all beam of base station periodic scan, periodically Send all beam synchronizing channel and common signal channel, it is not necessary to according to UE feedback carry out sector beam selection and its Synchronizing channel and common signal channel cycle through.
By bicyclic wave beam cut-in method, due to base station the second loop only need transmitting portion beam synchronizing channel and Common signal channel, compared to single loop beam access schemes, it is possible to reduce overhead, and the interference to other beam is reduced, simultaneously Save base station energy consumption.
Common bicyclic wave beam access procedure is as follows：
1) base station sends all beam discovery signals, such as master sync signal according to the first loop cycle (Primary Synchronization Signal, PSS) or auxiliary synchronous signals (Secondary Synchronization Signal, SSS) or PBCH.
2) UE detects synchronous signal obtaining Physical Cell Identifier (Physical Cell ID, PCI) and wave beam mark (Beam Id).Other obtain Beam Id method：Such as base station sends the Beam Id of corresponding wave beam by PBCH, UE obtains according to PBCH Take Beam Id.
3) UE feeds back Beam Id by the up channel associated with the first loop Beam, and base station only needs which Beam known There is UE in position, for determining the sector Beam of the second loop, it is not necessary to know specific UE information.
4) UE reads system information by receiving sector Beam, obtains PRACH configuration informations, passes through Stochastic accessing mistake Journey access system, (connected) state is connected into wireless heterogeneous networks (Radio Resource Control, RRC).
As shown in fig. 5, it is assumed that by the first loop beam scanning, UE feeds back beam ID corresponding to B0-B3, then base station B0-B3 synchronous subframe (synchronization subframe), the letter that synchronous subframe is sent are sent in the second looped cycle Road includes synchronizing channel and PBCH.Discovery subframe and synchronization subframe are in a radio frames In position be identical.The cycle of first loop is 40ms, and several radio frames send discovery before each cycle Subframe, sector beam synchronous subframe is cycled through in other subframes in cycle.
In the prior art, the design of synchronizing signal and reference signal is also according to traditional periodicity fixed mode (pattern) mode sent, UE maintain synchronization and channel measurement by these signals.Therefore, even accorded with for some subframe Number, the synchronizing signal or reference signal that its synchronous and channel measurement can be based on other subframes obtain.
Due to being covered under high frequency scene by narrow beam, each narrow beam covering is limited in scope, when the ue moves, The switching of wave beam may occur, be the wave beam of its service, in different subframes even on symbol for some UE therefore It is probably different.And the synchronizing signal and reference signal that UE receives in a wave beam are not appropriate for being used for UE in another ripple The synchronization of beam and channel measurement.
Therefore, switch the shortcomings that prior art not adapt to quick beam, the synchronization of the wave beam of present sub-frame and letter Synchronizing signal and reference signal of the road measurement dependent on other subframes, as the synchronizing signal of step frame completes synchronous, Huo Zheben The public reference signal (Cell-specific reference signals, CRS) of subframe and other subframes is smart to complete time-frequency It is synchronous.When beam switchover occurs for different subframes, synchronizing signal, reference signal from different beams can not be provided commonly for currently The Fast synchronization of subframe.
The content of the invention
The embodiment of the present invention provides sending method, synchronous method, base station and the UE of signal, UE when can realize beam switchover Fast synchronization.
On the one hand, there is provided a kind of sending method of signal.Base station determines the first beam set, wherein, the first beam collection Conjunction includes at least one first wave beam；Base station first kind subframe send at least one first wave beam first kind synchronizing signal and Second homochronousness signal；Wherein, the first kind synchronizing signal of each first wave beam and the second homochronousness of each first wave beam letter Number there is default time-frequency location respectively in first kind subframe；Base station receives the wave beam identification information that at least one UE is sent, Wave beam identification information is used to indicate wave beam corresponding to the signal that UE is detected；Base station is according to the wave beam received from least one UE Identification information, determines the second beam set, and the second beam set includes at least one second wave beam；Sent out in the second class subframe base station Send the second homochronousness signal of at least one second wave beam.
In the embodiment of the present invention, the sub-frame division by transmission signal is first kind subframe and the second class subframe, devises two Homochronousness signal, and synchronizing signal is associated with wave beam, base station sends two classes of same wave beam in first kind subframe Synchronizing signal, this two homochronousness signal has default time-frequency location in first kind subframe, so that UE can be according to one It is slightly synchronous that the time-frequency location relation of two homochronousness signals in individual subframe carries out time-frequency；Also, base station is always according to the UE received The wave beam identification information of transmission, the second homochronousness signal of respective beam is sent in the second class subframe, so that UE can be with It is synchronous that the second homochronousness signal in a subframe carries out time-frequency essence.In the embodiment of the present invention, it is possible to achieve UE carries out same During step, independent of the synchronizing signal of other subframes, therefore when can realize beam switchover UE Fast synchronization.
In a kind of possible embodiment, base station wave beam according to used in the channel sent in the second class subframe, really Fixed 3rd beam set, wherein, the 3rd beam set includes at least one 3rd wave beam；Base station is sent at least in the second class subframe Second homochronousness signal of one the 3rd wave beam.
In the embodiment of the present invention, in the second class subframe, except feeding back the wave beam determined, also with good grounds UE tune according to UE Degree determines the wave beam to be sent out, in the case of not being the subset of the first beam set in the second beam set, further Ensure the second homochronousness signal of the respective beam required for UE is synchronized in the second class subframe be present.
In a kind of possible embodiment, base station wave beam according to used in the channel sent in the second class subframe, really Fixed 3rd beam set, wherein, the 3rd beam set includes at least one 3rd wave beam；It is not belonging to according in the 3rd beam set The wave beam of second beam set, the 4th beam set is determined, wherein, the 4th beam set includes at least one 4th wave beam； Second class subframe sends the second homochronousness signal of at least one 4th wave beam.
In the embodiment of the present invention, if in the second class subframe according to feedback determine beam set in exist with according to UE's Scheduling determines identical wave beam in the beam set to be sent out, then is not repeated to send the second homochronousness letter of these same beams Number.Due to there is a second homochronousness signal can to realize UE Fast synchronizations in a subframe, if had in a subframe more Individual second homochronousness signal will waste system transmission resources.Therefore, in embodiments of the present invention, it can ensure that UE is quickly same On the premise of step, effectively save system transmission resources.
In a kind of possible embodiment, the time-domain resource of the first kind synchronizing signal of different beams is located at first kind The distinct symbols of same subframe in frame；Or the time-domain resource of the first kind synchronizing signal of different beams is located at first kind subframe The numbering identical symbol of middle different subframes；Or the time-domain resource of the first kind synchronizing signal of different beams is located at the first kind The different frequency domain positions of the same symbol of same subframe in subframe.
In a kind of possible embodiment, the time-domain resource of the second homochronousness signal of different beams is located at first kind The different frequency domain positions of the same symbol of same subframe in frame.
In a kind of possible embodiment, the time-domain resource of the second homochronousness signal of different beams is located at the second class The different frequency domain positions of the same symbol of same subframe in frame.
On the other hand, there is provided a kind of synchronous method of signal.The first kind that UE detections base station is sent in first kind subframe Synchronizing signal and the second homochronousness signal；UE divides according to first kind synchronizing signal and the second homochronousness signal in first kind subframe The default time-frequency location not having, carry out the first Time and Frequency Synchronization；UE is to base station send wave beam identification information, wave beam identification information Wave beam corresponding to the signal detected for indicating UE；UE detects base station and identifies letter according to the wave beam received from least one UE Breath, determines the second beam set, the second beam set includes at least one second wave beam；At least one sent in the second class subframe Second homochronousness signal of individual second wave beam；UE carries out the second Time and Frequency Synchronization or channel estimation according to the second homochronousness signal With demodulation or wave beam corresponding to signal detection.
In a kind of possible embodiment, UE detection base station ripples according to used in the channel sent in the second class subframe Beam, the 3rd beam set is determined, wherein, the 3rd beam set includes at least one 3rd wave beam；Sent in the second class subframe Second homochronousness signal of at least one 3rd wave beam.
In a kind of possible embodiment, UE detection base station ripples according to used in the channel sent in the second class subframe Beam, the 3rd beam set is determined, wherein, the 3rd beam set includes at least one 3rd wave beam；According in the 3rd beam set The wave beam of the second beam set is not belonging to, determines the 4th beam set, wherein, the 4th beam set includes at least one 4th ripple Beam；In the second homochronousness signal of at least one 4th wave beam that the second class subframe is sent.
In a kind of possible embodiment, the first kind synchronizing signal of same wave beam and the second homochronousness signal are positioned at the The distinct symbols of same subframe in a kind of subframe；UE is according to first kind synchronizing signal and the second homochronousness signal in first kind subframe The middle default time-domain position relation having respectively, determine cyclic prefix (Cyclic Prefix, CP) length；And according to The frame header position of first kind synchronizing signal binding, carries out frame synchronization.
In a kind of possible embodiment, the first kind synchronizing signal of same wave beam and the second homochronousness signal are positioned at the The different frequency domain positions of the same-sign of same subframe in a kind of subframe；UE believes according to first kind synchronizing signal and the second homochronousness Number default frequency domain position relation having respectively in first kind subframe, determines CP length；And according to the first homochronousness The frame header position of signal binding, carries out frame synchronization.
On the other hand, the embodiments of the invention provide a kind of base station, the base station, which has, to be realized and believes in above method embodiment The function of number sender's behavior, the function can be realized by hardware, and corresponding software can also be performed by hardware and is realized. The hardware or software include the corresponding unit of one or more above-mentioned functions or module.
In a possible embodiment, the structure of base station includes processor, transmitter and receiver, the processing Device is configured as supporting base station to perform corresponding function in the above method.The transmitter and the receiver are used to support base station Communication between UE, for example, the transmitter is used to send the information such as synchronizing signal involved in the above method or referred to Order, the receiver are used for the wave beam identification information for receiving UE transmissions.The base station can also include memory, the memory For being coupled with processor, it preserves the necessary programmed instruction in base station and data.
On the other hand, the embodiments of the invention provide a kind of UE, the UE, which has, realizes that signal is same in above method embodiment The function of the side's of walking behavior, the function can be realized by hardware, and corresponding software can also be performed by hardware and is realized.It is described Hardware or software include the corresponding unit of one or more above-mentioned functions or module.
In a possible embodiment, UE structure includes processor, transmitters and receivers, the processor It is configured as supporting UE to perform corresponding function in the above method.The transmitter and the receiver are used to support UE and base station Between communication, for example, the transmitter is used to send in the above method information such as involved wave beam identification information or referred to Order, the receiver are used to receive the information such as synchronizing signal or instruction.The UE can also include memory, and the memory is used Coupled in processor, it preserves the necessary programmed instruction of UE and data.
Another aspect, the embodiments of the invention provide a kind of communication system, the system includes the base station described in above-mentioned aspect And UE.
Another further aspect, the embodiments of the invention provide a kind of computer-readable storage medium, for saving as used in above-mentioned base station Computer software instructions, it, which is included, is used to perform program designed by above-mentioned aspect.
Another further aspect, the embodiments of the invention provide a kind of computer-readable storage medium, for saving as used in above-mentioned UE Computer software instructions, it, which is included, is used to perform the program designed by above-mentioned aspect.
Compared to prior art, in the embodiment of the present invention, will send the sub-frame division of signal is first kind subframe and second Class subframe, two homochronousness signals are devised, and synchronizing signal is associated with wave beam, base station is sent in first kind subframe Two homochronousness signals of same wave beam, this two homochronousness signal have default time-frequency location in first kind subframe, so that Time-frequency can be carried out slightly synchronously according to the time-frequency location relation of two homochronousness signals in a subframe by obtaining UE；Also, base station is also The wave beam identification information sent according to the UE received, the second homochronousness signal of respective beam is sent in the second class subframe, So that UE can carry out time-frequency essence according to the second homochronousness signal in a subframe synchronously., can in the embodiment of the present invention During realizing that UE is synchronized, independent of the synchronizing signal of other subframes, therefore when can realize beam switchover UE it is quick It is synchronous.
Brief description of the drawings
Fig. 1 is the broad beam coverage schematic diagram under low frequency scene；
Fig. 2 is the broad beam coverage schematic diagram under high frequency scene；
Fig. 3 is multiple narrow beam coverage schematic diagrames under high frequency scene；
Fig. 4 is the bicyclic wave beam access scheme schematic diagram under high frequency scene；
Fig. 5 is the frame structure schematic diagram of bicyclic wave beam access scheme；
Fig. 6 a are a kind of sending method flow chart of signal provided in an embodiment of the present invention；
Fig. 6 b are the sending method flow chart of another signal provided in an embodiment of the present invention；
Fig. 7 is the sending method flow chart of another signal provided in an embodiment of the present invention；
Fig. 8 is the sending method flow chart of another signal provided in an embodiment of the present invention
Fig. 9 is a kind of synchronous method flow chart of signal provided in an embodiment of the present invention；
Figure 10 is the synchronous method flow chart of another signal provided in an embodiment of the present invention；
Figure 11 is the synchronous method flow chart of another signal provided in an embodiment of the present invention；
Figure 12 is the frame format schematic diagram of the discovery subframe in one embodiment of the invention；
Figure 13 is the frame format schematic diagram of the discovery subframe in another embodiment of the present invention；
Figure 14 is the frame format schematic diagram of the discovery subframe in another embodiment of the invention；
Figure 14 a are CP provided in an embodiment of the present invention length determining method schematic diagram；
Figure 15 is a kind of base station structure diagram provided in an embodiment of the present invention；
Figure 16 is another base station structure diagram provided in an embodiment of the present invention；
Figure 17 is a kind of UE structure charts provided in an embodiment of the present invention；
Figure 18 is another UE structure charts provided in an embodiment of the present invention.
Embodiment
Below by drawings and examples, technical scheme is described in further detail.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is explicitly described.
The sending method of signal provided in an embodiment of the present invention is not only suitable for the bicyclic wave beam access scheme under high frequency scene, The monocyclic wave beam access scheme being also applied under high frequency scene, the excellent of overhead is saved because bicyclic wave beam access scheme has Point, only illustrated by taking bicyclic wave beam access scheme as an example in the embodiment of the present invention.
In one example, two homochronousness signals are devised, are named as PSS and eSS respectively.
PSS:Sent by multiple beam cycles, be semi-statically configured PSS transmission, scanned for the first loop beam, when Frequency is thick synchronous, and different beam PSS can be time-multiplexed, can also frequency division multiplexing.Wherein, above-mentioned be semi-statically configured refers specifically to, The wave beam sent according to base station carries out PSS transmission, but PSS uses default time-frequency location in subframe is found.For example, base The wave beam number stood according to cell, configures the PSS of corresponding number, and PSS time-frequency location and wave beam number have corresponding relation.When small When the number of the scanning beam in area changes, base station can change PSS configuration accordingly.Meanwhile further PSS cycle And can configure.
eSS：Beam eSS transmission is semi-statically configured in first kind subframe, is scanned for the first loop beam, time-frequency It is thick synchronous；The dynamic configuration beam eSS transmission in the second class subframe, time-frequency essence for the beam of the second loop is synchronous, Common transport channel (Common transport channel, CCH) demodulation, Beam tracking (tracking).Different beam's ESS frequency division multiplexings.For example, result of the base station according to the first loop beam scanning, determines the second loop wave beam, because each first The second loop wave beam that the beam scanning of loop cycle determines is all different, becomes so the eSS of the second loop configuration is dynamic Change.Also, because each subframe is different to the wave beam of UE transmission signals, in the eSS that the subframe needs to have respective beam, institute Dynamic configuration is also required to eSS.
Method provided in an embodiment of the present invention can apply to Long Term Evolution (Long Term Evolution, LTE) technology And its evolution technology, such as 5G technologies, the network element related generally to are UE and base station.
From the angle of synchronizing signal configuration, the specific synchronizing signal of cell and the specific synchronizing signals of UE be present in cell：
Cell particular sync signal (Synchronization Signal, SS)：PSS+eSS, complete time-frequency it is thick synchronous, the One loop beam is scanned, and eSS is simultaneously for smart synchronous, the CCH demodulation of the second loop time-frequency, Beam tracking, cycle, time-frequency Position is semi-statically configured, and PSS can use 1 port (port) to send, and eSS can use 1port or 2ports to send.
The specific SS of UE：ESS, when servicing UE by some beam for base station, it is same that the UE carries out time-frequency essence under the beam Step, CCH demodulation, beam tracking etc..Running time-frequency resource can dynamic configuration, such as beam scanning results according to the first loop Configured with UE dispatch situation.In one example, in first loop cycle, the UE in cell is by detecting There are beam discovery signals, feed back to base station beam information, base station determines the effective of the second loop according to UE feedback Beam, so as to configure corresponding beam eSS running time-frequency resource.Meanwhile the beam used during according to the scheduling of following some subframes Situation, configure these subframes send eSS.Base station can be sent with 1port or 2ports, be demodulated for CCH.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable The meaning of sequence, it should be understood that only play differentiation.
Fig. 6 a are a kind of sending method flow chart of signal provided in an embodiment of the present invention, and reference picture 6a, this method includes：
Step 601, base station determines the first beam set, wherein, the first beam set includes at least one first wave beam.
Wherein, the wave beam that above-mentioned first beam set includes can be preset by base station.
Step 602, base station sends the first kind synchronizing signal and the second class of at least one first wave beam in first kind subframe Synchronizing signal.
Wherein, the second homochronousness signal of the first kind synchronizing signal of each first wave beam and each first wave beam is first There is default time-frequency location respectively in class subframe.
In the embodiment of the present invention, above-mentioned first kind subframe can be the discovery subframe in bicyclic wave beam access scheme, above-mentioned First kind synchronizing signal can be foregoing PSS, and above-mentioned second homochronousness signal can be foregoing eSS.
The signal that base station is sent in first kind subframe can include the wave beam identification information of respective beam, and UE passes through reception The signal that base station is sent in first kind subframe can obtain the wave beam identification information of respective beam.
In the embodiment of the present invention, the time-domain resource of the first kind synchronizing signal of different beams is located at same in first kind subframe The distinct symbols of subframe；Or the time-domain resource of the first kind synchronizing signal of different beams is located in first kind subframe different sons The numbering identical symbol of frame；Or the time-domain resource of the first kind synchronizing signal of different beams is located in first kind subframe together The different frequency domain positions of the same symbol of one subframe.
The time-domain resource of second homochronousness signal of different beams is located at the same symbol of same subframe in first kind subframe Different frequency domain positions.
Step 603, base station receives the wave beam identification information that at least one UE is sent, and wave beam identification information is used to indicate that UE is examined Wave beam corresponding to the signal measured.
Above-mentioned wave beam is specially the first wave beam.
In bicyclic wave beam cut-in method, base station, can be according to the wave beam mark of UE feedbacks after finding that subframe sends signal Know information, determine there is UE under which wave beam, so that it is determined that the wave beam sent in follow-up synchronous subframe.
Step 604, base station determines the second beam set according to the wave beam identification information received from least one UE, Two beam sets include at least one second wave beam.
Wherein, the second beam set can be the subset of the first beam set, for example, the first beam collection be combined into wave beam 1 to Wave beam 8, the second beam set are wave beam 2 and wave beam 5；Second beam set may not be the subset of the first beam set, i.e., Base station is allowed to be adjusted when actually sending to wave beam, wave beam is transparent for UE, for example, the first beam collection is combined into Wave beam 1 is to wave beam 8, and base station determines that wave beam 1, wave beam 2 and wave beam 5 have UE below according to UE feedback, due to wave beam 1 and wave beam 2 For adjacent beams, therefore wave beam 1 and wave beam 2 are replaced by a new multi-beam beam 9, now, the second beam set is ripple Beam 9 and wave beam 5, wherein, wave beam 9 is not included in the first beam set.
Step 605, base station sends the second homochronousness signal of at least one second wave beam in the second class subframe.
Wherein, above-mentioned second class subframe can be the synchronous subframe in bicyclic wave beam access scheme.
The time-domain resource of second homochronousness signal of different beams is located at the same of same subframe in the second class subframe The different frequency domain positions of symbol.
Compared to prior art, in the embodiment of the present invention, will send the sub-frame division of signal is first kind subframe and second Class subframe, two homochronousness signals are devised, and synchronizing signal is associated with wave beam, base station is sent in first kind subframe Two homochronousness signals of same wave beam, this two homochronousness signal have default time-frequency location in first kind subframe, so that Time-frequency can be carried out slightly synchronously according to the time-frequency location relation of two homochronousness signals in a subframe by obtaining UE；Also, base station is also The wave beam identification information sent according to the UE received, the second homochronousness signal of respective beam is sent in the second class subframe, So that UE can carry out time-frequency essence according to the second homochronousness signal in a subframe synchronously., can in the embodiment of the present invention During realizing that UE is synchronized, independent of the synchronizing signal of other subframes, therefore when can realize beam switchover UE it is quick It is synchronous.
In addition, in order to ensure UE Fast synchronization, just there is the in first subframe after ensureing UE beam switchovers that should try one's best Two homochronousness signals.Therefore, except the wave beam determined according to feedback, also with good grounds UE scheduling determines the wave beam to be sent out, i.e., dynamic The eSS of state.
In one example, base station wave beam according to used in the channel sent in the second class subframe, determines the 3rd wave beam Set, wherein, the 3rd beam set includes at least one 3rd wave beam；Base station sends at least one 3rd ripple in the second class subframe Second homochronousness signal of beam.
In another example, base station wave beam according to used in the channel sent in the second class subframe, the 3rd ripple is determined Constriction closes, wherein, the 3rd beam set includes at least one 3rd wave beam；The second wave beam is not belonging to according in the 3rd beam set The wave beam of set, the 4th beam set is determined, wherein, the 4th beam set includes at least one 4th wave beam；In the second class Frame sends the second homochronousness signal of at least one 4th wave beam.
Fig. 6 b be another signal provided in an embodiment of the present invention sending method flow chart, reference picture 6b, this method bag Include：
Step 611, the first kind synchronizing signal of each wave beam of the base station in first kind subframe sends the first beam set With the second homochronousness signal, wherein, the first kind synchronizing signal of each wave beam and the second homochronousness signal of each wave beam are There is default time-frequency location respectively in a kind of subframe.
Wherein, above-mentioned first kind subframe can be the discovery subframe in bicyclic wave beam access scheme, above-mentioned first beam collection The wave beam that conjunction includes can be preset by base station, and above-mentioned first kind synchronizing signal can be foregoing PSS, and above-mentioned second is similar It can be foregoing eSS to walk signal.
The signal that base station is sent in first kind subframe can include the wave beam identification information of respective beam, and UE passes through reception The signal that base station is sent in first kind subframe can obtain the wave beam identification information of respective beam.
In the embodiment of the present invention, the time-domain resource of the first kind synchronizing signal of different beams is located in the first kind subframe The distinct symbols of same subframe；Or the time-domain resource of the first kind synchronizing signal of different beams is located at the first kind subframe The numbering identical symbol of middle different subframes；Or the time-domain resource of the first kind synchronizing signal of different beams is positioned at described the The different frequency domain positions of the same symbol of same subframe in a kind of subframe.
The time-domain resource of second homochronousness signal of different beams is located at the same of same subframe in the first kind subframe The different frequency domain positions of symbol.
Step 612, base station receives the wave beam identification information that at least one UE is sent, and wave beam identification information is used to indicate that UE is examined Wave beam corresponding to the signal measured.
In bicyclic wave beam cut-in method, base station, can be according to the wave beam mark of UE feedbacks after finding that subframe sends signal Know information, determine there is UE under which wave beam, so that it is determined that the wave beam sent in follow-up synchronous subframe.
Step 613, base station determines the second beam set according to the wave beam identification information received from least one UE.
Wherein, the second beam set can be the subset of the first beam set, for example, the first beam collection be combined into wave beam 1 to Wave beam 8, the second beam set are wave beam 2 and wave beam 5；Second beam set may not be the subset of the first beam set, i.e., Base station is allowed to be adjusted when actually sending to wave beam, wave beam is transparent for UE, for example, the first beam collection is combined into Wave beam 1 is to wave beam 8, and base station determines that wave beam 1, wave beam 2 and wave beam 5 have UE below according to UE feedback, due to wave beam 1 and wave beam 2 For adjacent beams, therefore wave beam 1 and wave beam 2 are replaced by a new multi-beam beam 9, now, the second beam set is ripple Beam 9 and wave beam 5, wherein, wave beam 9 is not included in the first beam set.
Step 614, the second homochronousness signal of each wave beam of the base station in the second class subframe sends the second beam set.
Wherein, above-mentioned second class subframe can be the synchronous subframe in bicyclic wave beam access scheme.
The time-domain resource of second homochronousness signal of different beams is located at the same of same subframe in the second class subframe The different frequency domain positions of symbol.
Compared to prior art, in the embodiment of the present invention, will send the sub-frame division of signal is first kind subframe and second Class subframe, two homochronousness signals are devised, and synchronizing signal is associated with wave beam, base station is sent in first kind subframe Two homochronousness signals of same wave beam, this two homochronousness signal have default time-frequency location in first kind subframe, so that Time-frequency can be carried out slightly synchronously according to the time-frequency location relation of two homochronousness signals in a subframe by obtaining UE；Also, base station is also The wave beam identification information sent according to the UE received, the second homochronousness signal of respective beam is sent in the second class subframe, So that UE can carry out time-frequency essence according to the second homochronousness signal in a subframe synchronously., can in the embodiment of the present invention During realizing that UE is synchronized, independent of the synchronizing signal of other subframes, therefore when can realize beam switchover UE it is quick It is synchronous.
In addition, in order to ensure UE Fast synchronization, just there is the in first subframe after ensureing UE beam switchovers that should try one's best Two homochronousness signals.Therefore, except the wave beam determined according to feedback, also with good grounds UE scheduling determines the wave beam to be sent out, i.e., dynamic The eSS of state.
Fig. 7 is the sending method flow chart of another signal provided in an embodiment of the present invention, and this method is except including above-mentioned Step 611 to 614, in addition to：
Step 615, base station the 3rd beam set according to used in the channel sent in the second class subframe, in the second class Frame sends the second homochronousness signal of each wave beam in the 3rd beam set.
For example, base station is the wave beam of UE transmission control information or datas according in the second class subframe, it is determined that sending wave beam pair The the second homochronousness signal answered.
Therefore in the second class subframe, except feeding back the wave beam determined according to UE, also with good grounds UE scheduling determines The wave beam to be sent out, in the case of not being the subset of the first beam set in the second beam set, it is further ensured that The second homochronousness signal of the respective beam required for UE is synchronized in second class subframe be present.
In the embodiment of the present invention, only it need to ensure there is a second homochronousness signal can to realize that UE is quick in a subframe It is synchronous, if there is multiple second homochronousness signals to waste system transmission resources in a subframe.Therefore, in the another of the present invention In one embodiment, if existed in the beam set determined in the second class subframe according to feedback with determining to want according to UE scheduling Identical wave beam in the beam set of hair, then it is not repeated to send the second homochronousness signal of these same beams.
Fig. 8 is the sending method flow chart of another signal provided in an embodiment of the present invention, and this method is except including above-mentioned Step 611 to 614, in addition to：
Step 616, base station the 3rd beam set according to used in the channel sent in the second class subframe, determines the 3rd ripple Constriction is not belonging to the 4th beam set that the wave beam of the second beam set is formed in closing.
Step 617, the second homochronousness signal of each wave beam of the base station in the second class subframe sends the 4th beam set.
Therefore can be on the premise of UE Fast synchronizations are ensured in the embodiment, effectively save system transmission resources.
Fig. 9 is a kind of synchronous method flow chart of signal provided in an embodiment of the present invention, and reference picture 9, this method includes：
Step 901, UE detects first kind synchronizing signal and the second homochronousness signal that base station is sent in first kind subframe.
Wherein, above-mentioned first kind subframe can be the discovery subframe in bicyclic wave beam access scheme, above-mentioned first homochronousness Signal can be foregoing PSS, and above-mentioned second homochronousness signal can be foregoing eSS.
Step 902, UE has respectively according to first kind synchronizing signal and the second homochronousness signal in first kind subframe Default time-frequency location, carry out the first Time and Frequency Synchronization.
Wherein, the first Time and Frequency Synchronization is referred to as time-frequency slightly synchronously, and the thick synchronous mode of time-frequency can include following two Kind situation.
In one example, the first kind synchronizing signal of same wave beam and the second homochronousness signal are located in first kind subframe The distinct symbols of same subframe；UE has respectively according to first kind synchronizing signal and the second homochronousness signal in first kind subframe Default time-domain position relation, determine CP length；And according to the frame header position bound with first kind synchronizing signal, carry out Frame synchronization.
In another example, the first kind synchronizing signal of same wave beam and the second homochronousness signal are located at first kind subframe In same subframe same-sign different frequency domain positions；UE is according to first kind synchronizing signal and the second homochronousness signal first The default frequency domain position relation having respectively in class subframe, determines CP length；And bound according to first kind synchronizing signal Frame header position, carry out frame synchronization.
Step 903, to base station send wave beam identification information, wave beam identification information is used to indicate the signal pair that UE is detected UE The wave beam answered.
Step 904, UE detects the second homochronousness signal of at least one second wave beam that base station is sent in the second class subframe.
Wherein, base station determines the second beam set, the second ripple according to the wave beam identification information received from least one UE Constriction closes and includes at least one second wave beam.
Wherein, above-mentioned second class subframe can be the synchronous subframe in bicyclic wave beam access scheme.
Step 905, UE carries out the second Time and Frequency Synchronization either channel estimation and demodulation or ripple according to the second homochronousness signal The detection of signal corresponding to beam.
Wherein, it is synchronous to be also referred to as time-frequency essence for the second Time and Frequency Synchronization.
In one example, UE is corrected according to the second homochronousness signal, the frequency shift (FS) of sub-carrier, so as to realize Time-frequency essence is synchronous；It is used for channel estimation and demodulation for the second homochronousness signal, for example, the second homochronousness signal is used as with reference to letter Number, channel is estimated, other are demodulated using the physical channel of same beam according to the channel estimated.
The synchronous method of signal provided in an embodiment of the present invention is corresponding with the sending method of aforementioned signal, identical place It will not be described here.
Corresponding with the sending method of signal, the embodiments of the invention provide the synchronous method of another signal, reference picture 10, this method except including above-mentioned steps 901 to 905, in addition to：
Step 906, UE detects the second homochronousness signal of at least one 3rd wave beam that base station is sent in the second class subframe.
Wherein, base station wave beam according to used in the channel sent in the second class subframe, determines the 3rd beam set, the 3rd Beam set includes at least one 3rd wave beam；
In the embodiment of the present invention, the time-frequency location of the second homochronousness signal of each wave beam can be with the 3rd beam set There is corresponding relation with the time-frequency location of the channel using corresponding wave beam.
Corresponding with the sending method of signal, the embodiments of the invention provide the synchronous method of another signal, reference picture 11, this method except including above-mentioned steps 901 to 905, in addition to：
Step 907, UE detects the second homochronousness signal of at least one 4th wave beam that base station is sent in the second class subframe.
Wherein, base station wave beam according to used in the channel sent in the second class subframe, determines the 3rd beam set, its In, the 3rd beam set includes at least one 3rd wave beam；According to the ripple that the second beam set is not belonging in the 3rd beam set Beam, the 4th beam set is determined, wherein, the 4th beam set includes at least one 4th wave beam.
In the embodiment of the present invention, the time-frequency location of the second homochronousness signal of each 4th wave beam can be with using corresponding ripple The time-frequency location of the channel of beam has corresponding relation.
A kind of design method of synchronizing signal under specific system design is given below.
Radio frequency system bandwidth：250M,500M,750M,1G；
It is divided into several subbands：2、4、6、8；
High frequency radio frames, subframe：Radio frames a length of 1ms, subframe lengths 0.1ms.
PSS:
Frequency domain：Take 6 RB of subband center；
Time domain：Positioned at last downlink symbol of n-th of subframe of SFN mod 5=0 radio frames, wherein, SFN generations Table System Frame Number (SystemFrameNumber).
The thick cyclic prefix (Cyclic Prefix, CP) of synchronously, together with eSS completing of time-frequency is carried out for UE to identify.Its In, above-mentioned time-frequency slightly can also synchronously include synchronizing sub-frame and frame synchronization.
Different beam PSS time division multiplexings.
eSS：
Time domain：Positioned at first symbol (symbol) of subframe, a symbol is occupied.
Frequency domain：Different beam eSS frequency division multiplexings, for example, occupying different frequency domain broach (Comb) in subband.
Synchronous time-frequency essence, CCH demodulation, Beam tracking are carried out for UE, wherein, above-mentioned time-frequency essence is synchronous to include symbol Number, the fine synchronization of subcarrier, correction of frequency skew etc..
Figure 12 is the frame format schematic diagram of the discovery subframe in one embodiment of the invention, and each radio frames only have a son Frame carries PSS, multiple beam PSS is sent in discovery subframes, each beam PSS and eSS go out in a subframe Existing, PSS and eSS time-divisions, UE determines CP length by PSS and eSS time relationship, and frame header position is bound with PSS sequences, is used for Determine frame synchronization.
Figure 13 is the frame format schematic diagram of the discovery subframe in another embodiment of the present invention, and each radio frames only have one Subframe carries PSS, and 1 beam PSS, PSS and the eSS time-division is sent in subframe, CP is determined by PSS and eSS time relationship Length, slot synchronization and frame synchronization are determined by PSS.
Figure 14 is the frame format schematic diagram of the discovery subframe in another embodiment of the invention, and each radio frames only have one Subframe carries PSS, and 1 beam PSS, PSS and eSS frequency division is sent in subframe, true by PSS and eSS frequency domain relativeness Determine CP length, slot synchronization and frame synchronization are determined by PSS.
In the embodiment of the present invention, base station sends at least one beam PSS signals, Yi Jiyu on default running time-frequency resource ESS signals corresponding to PSS.For example, different beam PSS time-domain resource is located at the distinct symbols of same subframe, or it is different The numbering identical symbol of subframe, or the different frequency domain positions of same symbol.Using the numbering identical symbol of different subframes as Example, PSS are located at the 4th symbol of subframe, and eSS corresponding with PSS is located at first symbol of subframe.Due to each symbol Previous section with the addition of CP, and UE is when detecting PSS and corresponding eSS, it is possible to which two signals measured according to blind check are in the time On interval, CP length is calculated, as shown in figures 14a.
On frequency domain, PSS can take the center of system bandwidth, as the PSS of LTE system is taken in system bandwidth 6 RB of the heart.ESS corresponding with PSS is frequency division multiplexing in first symbol and other beam eSS, and the eSS can take pre- If frequency domain position, such as the center of the bandwidth of system, either default low frequency position or high frequency position.
For PSS and corresponding eSS same symbol different frequency domain positions, using PSS and eSS in the relative position of frequency domain Put and determine CP length.Such as PSS takes 6, the center RB of system bandwidth, the frequency domain for the RB that corresponding eSS takes can compare PSS It is high or low, two kinds of possible default CP length are represented respectively, and UE is based on blind Detecting, detected on corresponding frequency domain position PSS and eSS, according to the relation of the frequency domain position between them, determine CP length.The frequency domain position of RB as where eSS compares PSS Height, it is defined as default CP length 1；The frequency domain position of RB where eSS is lower than PSS, is defined as default CP length 2.
In the embodiment of the present invention, PSS and eSS that base station is sent using default time-frequency location, the first loop is carried out for UE Beam find, complete corresponding beam synchronization, i.e., determine that subframe originates by symbol where presetting PSS and the CP length of identification Position, the original position of radio frames is determined according to position of the default subframe in radio frames.Except default time-frequency location hair The PSS and eSS sent, base station can also send other beam eSS signals, for further Time and Frequency Synchronization, channel demodulation, Beam tracking etc..These eSS can not be what is sent in default time-frequency location, but base station is according to UE dispatch situation, or What the decisions such as person the second loop sector beam transmission situation were sent, its running time-frequency resource can be changed with every subframe dynamic, according to Control channel sends the frequency domain position decision of either data dispatch or the quantity according to sector beam, according to certain Pattern sends corresponding beam eSS.
In the first loop, UE detection PSS and corresponding eSS, determine CP length and find beam.In the second loop, UE inspections Survey eSS and obtain further Time and Frequency Synchronization, such as the fine synchronization of time, correction of frequency skew, or the ginseng as channel demodulation Examine signal, or beam etc. is tracked by measure beam coherent signals.
The sending method of signal provided in an embodiment of the present invention and the synchronous method of signal are adapted to quick beam and cut Change, the synchronization of the wave beam of present sub-frame and channel measurement only depend on the synchronizing signal and reference signal of this subframe, such as this subframe The eSS signals of dynamic configuration.
Normally, beam switchover occurs for different subframes, and synchronizing signal, reference signal from different beams can not be used jointly In the Fast synchronization and channel measurement of present sub-frame.Need to rely on the synchronous letter in other subframes sent using same beam Number, reference signal, synchronous to obtain and the time delay of channel measurement is big, poor real, the degree of accuracy declines.
In the sending method of signal provided in an embodiment of the present invention, the eSS of base station dynamic configuration can be flexible with every subframe Send, so that UE only needs to complete the Fast synchronization of respective beam by the eSS signals can of this subframe and channel is surveyed Amount, without relying on other subframes, improves speed and the degree of accuracy of synchronization and channel measurement.
The embodiments of the invention provide a kind of combination of synchronizing signal, including above-mentioned two homochronousness signal, base station to find Two homochronousness signals are sent in subframe, the wave beam that UE completes the first loop by the two homochronousness signals detected in a subframe is swept Retouch, the beam Synchronization of the second loop and tracking, and the Fast synchronization and channel measurement of wave beam.
Figure 15 is a kind of base station structure diagram provided in an embodiment of the present invention, and the base station is used to perform offer of the embodiment of the present invention Signal sending method, reference picture 15, the base station includes：
Memory 1501, processor 1502, transmitter 1503 and receiver 1504；
Memory 1501, instructed for storage program；
Processor 1502, for performing following operate according to the programmed instruction stored in memory 1501：
The first beam set is determined, wherein, the first beam set includes at least one first wave beam；
Indicator -transmitter 1503 sends the first kind synchronizing signal and second of at least one first wave beam in first kind subframe Homochronousness signal；Wherein, the second homochronousness signal of the first kind synchronizing signal of each first wave beam and each first wave beam exists There is default time-frequency location respectively in first kind subframe；
Indicate that receiver 1504 receives the wave beam identification information that at least one UE is sent, wave beam identification information is used to indicate UE Wave beam corresponding to the signal detected；
The wave beam identification information received according to receiver 1504 from least one UE, determines the second beam set, second Beam set includes at least one second wave beam；
Indicator -transmitter 1503 sends the second homochronousness signal of at least one second wave beam in the second class subframe.
In one example, processor 1502 is additionally operable to perform following grasp according to the programmed instruction stored in memory 1501 Make：
According to wave beam used in the channel sent in the second class subframe, the 3rd beam set is determined, wherein, the 3rd wave beam Set includes at least one 3rd wave beam；
Indicator -transmitter 1503 sends the second homochronousness signal of at least one 3rd wave beam in the second class subframe.
In another example, processor 1502 is additionally operable to following according to the programmed instruction execution stored in memory 1501 Operation：
According to wave beam used in the channel sent in the second class subframe, the 3rd beam set is determined, wherein, the 3rd wave beam Set includes at least one 3rd wave beam；According to the wave beam that the second beam set is not belonging in the 3rd beam set, the 4th is determined Beam set, wherein, the 4th beam set includes at least one 4th wave beam；
Indicator -transmitter 1503 sends the second homochronousness signal of at least one 4th wave beam in the second class subframe.
Figure 16 is another base station structure diagram provided in an embodiment of the present invention, and the base station carries for performing the embodiment of the present invention The sending method of the signal of confession, reference picture 16, the base station include：
Processing unit 1601, transmitting element 1602 and receiving unit 1603；
Wherein, processing unit 1601 is specifically as follows aforementioned processor 1502, and transmitting element 1602 is specifically as follows foregoing Transmitter 1503, receiving unit 1603 are specifically as follows foregoing receiver 1504.
Processing unit 1601, for determining the first beam set, wherein, the first beam set includes at least one first wave Beam；
Transmitting element 1602, for the instruction according to processing unit 1601, at least one first is sent in first kind subframe The first kind synchronizing signal of wave beam and the second homochronousness signal；Wherein, the first kind synchronizing signal of each first wave beam and each Second homochronousness signal of the first wave beam has default time-frequency location respectively in first kind subframe；
Receiving unit 1603, for the instruction according to processing unit 1601, receive the wave beam mark that at least one UE is sent Information, wave beam identification information are used to indicate wave beam corresponding to the signal that UE is detected；
Processing unit 1601, the wave beam identification information received according to receiving unit 1603 from least one UE is additionally operable to, The second beam set is determined, the second beam set includes at least one second wave beam；
Transmitting element 1602, the instruction according to processing unit 1601 is additionally operable to, at least one the is sent in the second class subframe Second homochronousness signal of two wave beams.
In one example, processing unit 1601, it is additionally operable to the ripple according to used in the channel sent in the second class subframe Beam, the 3rd beam set is determined, wherein, the 3rd beam set includes at least one 3rd wave beam；
Transmitting element 1602, the instruction according to processing unit 1601 is additionally operable to, at least one the is sent in the second class subframe Second homochronousness signal of three wave beams.
In another example, processing unit 1601, it is additionally operable to according to used in the channel sent in the second class subframe Wave beam, the 3rd beam set is determined, wherein, the 3rd beam set includes at least one 3rd wave beam；According to the 3rd beam set In be not belonging to the wave beam of the second beam set, determine the 4th beam set, wherein, the 4th beam set includes at least one 4th Wave beam；
Transmitting element 1602, the instruction according to processing unit 1601 is additionally operable to, at least one the is sent in the second class subframe Second homochronousness signal of four wave beams.
Figure 17 is a kind of UE structure charts provided in an embodiment of the present invention, and the UE is used to perform letter provided in an embodiment of the present invention Number synchronous method, reference picture 17, the UE includes：
Memory 1701, processor 1702, transmitter 1703 and receiver 1704；
Memory 1701, instructed for storage program；
Processor 1702, for performing following operate according to the programmed instruction stored in memory 1701：
The first kind synchronizing signal and the second homochronousness signal that detection base station is sent in first kind subframe；It is same according to the first kind The default time-frequency location that step signal and the second homochronousness signal have respectively in first kind subframe, it is same to carry out the first time-frequency Step；
To base station send wave beam identification information, wave beam identification information is used to indicate the signal detected indicator -transmitter 1703 Corresponding wave beam；
Second homochronousness signal of at least one second wave beam that detection base station is sent in the second class subframe, wherein, Base station determines the second beam set, the second beam set includes extremely according to the wave beam identification information received from least one UE Few second wave beam；According to the second homochronousness signal, the second Time and Frequency Synchronization either channel estimation and demodulation or wave beam are carried out The detection of corresponding signal.
In one example, processor 1702 is additionally operable to perform following grasp according to the programmed instruction stored in memory 1701 Make：
Second homochronousness signal of at least one 3rd wave beam that detection base station is sent in the second class subframe, wherein, base station According to wave beam used in the channel sent in the second class subframe, the 3rd beam set is determined, the 3rd beam set includes at least One the 3rd wave beam.
In another example, processor 1702 is additionally operable to following according to the programmed instruction execution stored in memory 1701 Operation：
Second homochronousness signal of at least one 4th wave beam that detection base station is sent in the second class subframe, wherein, base station According to wave beam used in the channel sent in the second class subframe, the 3rd beam set is determined, the 3rd beam set includes at least One the 3rd wave beam, according to the wave beam that the second beam set is not belonging in the 3rd beam set, the 4th beam set is determined, its In, the 4th beam set includes at least one 4th wave beam.
In one example, the first kind synchronizing signal of same wave beam and the second homochronousness signal are located in first kind subframe The distinct symbols of same subframe；Processor 1702 is specifically used for performing following grasp according to the programmed instruction stored in memory 1701 Make：The default time-domain position being had respectively in first kind subframe according to first kind synchronizing signal and the second homochronousness signal closes System, determines CP length；And according to the frame header position bound with first kind synchronizing signal, carry out frame synchronization.
In one example, the first kind synchronizing signal of same wave beam and the second homochronousness signal are located in first kind subframe The different frequency domain positions of the same-sign of same subframe；Processor 1702 is specifically used for according to the program stored in memory 1701 Instruction performs following operate：Had respectively in first kind subframe according to first kind synchronizing signal and the second homochronousness signal pre- If frequency domain position relation, determine CP length；And according to the frame header position bound with first kind synchronizing signal, it is same to carry out frame Step.
Figure 18 is another UE structure charts provided in an embodiment of the present invention, and the UE is provided in an embodiment of the present invention for performing The synchronous method of signal, reference picture 18, the UE include：
Processing unit 1801, transmitting element 1802 and receiving unit 1803；
Wherein, processing unit 1801 is specifically as follows aforementioned processor 1702, and transmitting element 1802 is specifically as follows foregoing Transmitter 1703, receiving unit 1803 are specifically as follows foregoing receiver 1704.
Processing unit 1801, the first kind synchronizing signal and the second homochronousness sent for detecting base station in first kind subframe Signal；The default time-frequency position being had respectively in first kind subframe according to first kind synchronizing signal and the second homochronousness signal Put, carry out the first Time and Frequency Synchronization；
Transmitting element 1802, for the instruction according to processing unit 1801, to base station send wave beam identification information, wave beam mark Know information to be used to indicate wave beam corresponding to the signal that processing unit 1801 detects；
Processing unit 1801, it is additionally operable to detect base station according to the wave beam identification information received from least one UE, it is determined that Second beam set, the second beam set include at least one second wave beam；At least one second sent in the second class subframe Second homochronousness signal of wave beam, according to the second homochronousness signal, carry out the second Time and Frequency Synchronization or channel estimation and demodulation or The detection of signal corresponding to person's wave beam.
In one example, processing unit 1801, it is additionally operable to detect base station is sent in the second class subframe at least one the Second homochronousness signal of three wave beams, wherein, base station wave beam according to used in the channel sent in the second class subframe, determine Three beam sets, the 3rd beam set include at least one 3rd wave beam.
In another example, processing unit 1801, be additionally operable to detect base station sent in the second class subframe it is at least one Second homochronousness signal of the 4th wave beam, wherein, base station wave beam according to used in the channel sent in the second class subframe, it is determined that 3rd beam set, the 3rd beam set include at least one 3rd wave beam, the second ripple are not belonging to according in the 3rd beam set The wave beam that constriction closes, determines the 4th beam set, the 4th beam set includes at least one 4th wave beam.
In one example, the first kind synchronizing signal of same wave beam and the second homochronousness signal are located in first kind subframe The distinct symbols of same subframe；Processing unit 1801, specifically for being existed according to first kind synchronizing signal and the second homochronousness signal The default time-domain position relation having respectively in first kind subframe, determines CP length；And according to first kind synchronizing signal The frame header position of binding, carry out frame synchronization.
In one example, the first kind synchronizing signal of same wave beam and the second homochronousness signal are located in first kind subframe The different frequency domain positions of the same-sign of same subframe；Processing unit 1801, specifically for according to first kind synchronizing signal and The default frequency domain position relation that two homochronousness signals have respectively in first kind subframe, determines CP length；And according to The frame header position of first kind synchronizing signal binding, carries out frame synchronization.
It should be understood that in the embodiment of the present invention, part or all of first wave beam can be same wave beam with the second wave beam, Can also be different wave beams.
Professional should further appreciate that, each example described with reference to the embodiments described herein Unit and algorithm steps, it can be realized with electronic hardware, computer software or the combination of the two, it is hard in order to clearly demonstrate The interchangeability of part and software, the composition and step of each example are generally described according to function in the above description. These functions are performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme. Professional and technical personnel can realize described function using distinct methods to each specific application, but this realization It is it is not considered that beyond the scope of this invention.
Can be with one of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method is Completed by program come instruction processing unit, described program can be stored in computer-readable recording medium, and the storage is situated between Matter is non-transitory (non-transitory) medium, such as random access memory, read-only storage, flash memory, firmly Disk, solid state hard disc, tape (magnetic tape), floppy disk (floppy disk), CD (optical disc) and its any Combination.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims It is defined.

Claims (22)

1. a kind of sending method of signal, it is characterised in that methods described includes：
Base station determines the first beam set, wherein, first beam set includes at least one first wave beam；
The base station sends the first kind synchronizing signal and the second homochronousness of at least one first wave beam in first kind subframe Signal；Wherein, the first kind synchronizing signal of each first wave beam and second class of each first wave beam Synchronizing signal has default time-frequency location respectively in the first kind subframe；
The base station receives the wave beam identification information that at least one user equipment (UE) is sent, and the wave beam identification information is used to indicate Wave beam corresponding to the signal that the UE is detected；
The base station determines the second beam set according to the wave beam identification information received from least one UE, described Two beam sets include at least one second wave beam；
The base station sends the second homochronousness signal of at least one second wave beam in the second class subframe.
2. the method as described in claim 1, it is characterised in that methods described also includes：
Base station wave beam according to used in the channel sent in the second class subframe, determines the 3rd beam set, wherein, 3rd beam set includes at least one 3rd wave beam；
The base station sends the second homochronousness signal of at least one 3rd wave beam in the second class subframe.
3. the method as described in claim 1, it is characterised in that methods described also includes：
Base station wave beam according to used in the channel sent in the second class subframe, determines the 3rd beam set, wherein, 3rd beam set includes at least one 3rd wave beam；Second wave beam is not belonging to according in the 3rd beam set The wave beam of set, the 4th beam set is determined, wherein, the 4th beam set includes at least one 4th wave beam；
The second homochronousness signal of at least one 4th wave beam is sent in the second class subframe.
4. method as claimed any one in claims 1 to 3, it is characterised in that：
The time-domain resource of the first kind synchronizing signal of different beams is located at the distinct symbols of same subframe in the first kind subframe； Or
The numbering that the time-domain resource of the first kind synchronizing signal of different beams is located at different subframes in the first kind subframe is identical Symbol；Or
The time-domain resource of the first kind synchronizing signal of different beams is located at the same symbol of same subframe in the first kind subframe Different frequency domain positions.
5. method as claimed in claim 4, it is characterised in that：
The time-domain resource of second homochronousness signal of different beams is located at the same symbol of same subframe in the first kind subframe Different frequency domain positions.
6. the method as any one of claim 1 to 5, it is characterised in that：
The time-domain resource of second homochronousness signal of different beams is located at the same symbol of same subframe in the second class subframe Different frequency domain positions.
7. a kind of synchronous method of signal, it is characterised in that methods described includes：
The first kind synchronizing signal and the second homochronousness signal that user equipment (UE) detection base station is sent in first kind subframe；
The UE has respectively according to the first kind synchronizing signal and the second homochronousness signal in the first kind subframe The default time-frequency location having, carry out the first Time and Frequency Synchronization；
To the base station send wave beam identification information, the wave beam identification information is used to indicate the letter that the UE is detected the UE Wave beam corresponding to number；
The UE detects the base station according to the wave beam identification information received from least one UE, determines the second beam set, Second beam set includes at least one second wave beam；In at least one second wave beam that the second class subframe is sent Second homochronousness signal；
The UE carries out the second Time and Frequency Synchronization either channel estimation and demodulation or wave beam pair according to the second homochronousness signal The detection for the signal answered.
8. method as claimed in claim 7, it is characterised in that methods described also includes：
The UE detects base station wave beam according to used in the channel sent in the second class subframe, determines the 3rd wave beam Set, wherein, the 3rd beam set includes at least one 3rd wave beam；Described in being sent in the second class subframe at least Second homochronousness signal of one the 3rd wave beam.
9. method as claimed in claim 7, it is characterised in that methods described also includes：
The UE detects base station wave beam according to used in the channel sent in the second class subframe, determines the 3rd wave beam Set, wherein, the 3rd beam set includes at least one 3rd wave beam；Institute is not belonging to according in the 3rd beam set The wave beam of the second beam set is stated, determines the 4th beam set, wherein, the 4th beam set includes at least one 4th ripple Beam；In the second homochronousness signal of at least one 4th wave beam that the second class subframe is sent.
10. the method as any one of claim 7 to 9, it is characterised in that：The first kind synchronizing signal of same wave beam and Second homochronousness signal is located at the distinct symbols of same subframe in the first kind subframe；
The UE has respectively according to the first kind synchronizing signal and the second homochronousness signal in the first kind subframe The default time-frequency location having, the first Time and Frequency Synchronization is carried out, including：
The UE has respectively according to the first kind synchronizing signal and the second homochronousness signal in the first kind subframe The default time-domain position relation having, determines cyclic prefix CP length；And according to binding with the first kind synchronizing signal Frame header position, carry out frame synchronization.
11. the method as any one of claim 7 to 9, it is characterised in that：The first kind synchronizing signal of same wave beam and Second homochronousness signal is located at the different frequency domain positions of the same-sign of same subframe in the first kind subframe；
The UE has respectively according to the first kind synchronizing signal and the second homochronousness signal in the first kind subframe The default time-frequency location having, the first Time and Frequency Synchronization is carried out, including：
The UE has respectively according to the first kind synchronizing signal and the second homochronousness signal in the first kind subframe The default frequency domain position relation having, determines cyclic prefix CP length；And according to binding with the first kind synchronizing signal Frame header position, carry out frame synchronization.
12. a kind of base station, it is characterised in that the base station includes：Processing unit, transmitting element and receiving unit；
The processing unit, for determining the first beam set, wherein, first beam set includes at least one first wave Beam；
The transmitting element, for the instruction according to the processing unit, described at least one first is sent in first kind subframe The first kind synchronizing signal of wave beam and the second homochronousness signal；Wherein, first homochronousness letter of each first wave beam Number and the second homochronousness signal of each first wave beam there is default time-frequency respectively in the first kind subframe Position；
The receiving unit, for the instruction according to the processing unit, receive the wave beam that at least one user equipment (UE) is sent Identification information, the wave beam identification information are used to indicate wave beam corresponding to the signal that the UE is detected；
The processing unit, the wave beam identification information received according to the receiving unit from least one UE is additionally operable to, The second beam set is determined, second beam set includes at least one second wave beam；
The transmitting element, the instruction according to the processing unit is additionally operable to, described at least one the is sent in the second class subframe Second homochronousness signal of two wave beams.
13. base station as claimed in claim 12, it is characterised in that：
The processing unit, the wave beam according to used in the channel sent in the second class subframe is additionally operable to, determines the 3rd ripple Constriction closes, wherein, the 3rd beam set includes at least one 3rd wave beam；
The transmitting element, the instruction according to the processing unit is additionally operable to, at least one described in the second class subframe transmission Second homochronousness signal of individual 3rd wave beam.
14. base station as claimed in claim 12, it is characterised in that：
The processing unit, the wave beam according to used in the channel sent in the second class subframe is additionally operable to, determines the 3rd ripple Constriction closes, wherein, the 3rd beam set includes at least one 3rd wave beam；It is not belonging to according in the 3rd beam set The wave beam of second beam set, determines the 4th beam set, wherein, the 4th beam set includes at least one 4th Wave beam；
The transmitting element, the instruction according to the processing unit is additionally operable to, at least one described in the second class subframe transmission Second homochronousness signal of individual 4th wave beam.
15. the base station as any one of claim 12 to 14, it is characterised in that：
The time-domain resource of the first kind synchronizing signal of different beams is located at the distinct symbols of same subframe in the first kind subframe； Or
The numbering that the time-domain resource of the first kind synchronizing signal of different beams is located at different subframes in the first kind subframe is identical Symbol；Or
The time-domain resource of the first kind synchronizing signal of different beams is located at the same symbol of same subframe in the first kind subframe Different frequency domain positions.
16. base station as claimed in claim 15, it is characterised in that：
The time-domain resource of second homochronousness signal of different beams is located at the same symbol of same subframe in the first kind subframe Different frequency domain positions.
17. the base station as any one of claim 12 to 16, it is characterised in that：
The time-domain resource of second homochronousness signal of different beams is located at the same symbol of same subframe in the second class subframe Different frequency domain positions.
18. a kind of user equipment (UE), it is characterised in that the UE includes：Processing unit, transmitting element and receiving unit；
The processing unit, for detecting first kind synchronizing signal and the second homochronousness letter that base station is sent in first kind subframe Number；Had respectively in the first kind subframe according to the first kind synchronizing signal and the second homochronousness signal default Time-frequency location, carry out the first Time and Frequency Synchronization；
The transmitting element, for the instruction according to the processing unit, to the base station send wave beam identification information, the ripple Beam identification information is used to indicate wave beam corresponding to the signal that the processing unit detects；
The processing unit, it is additionally operable to detect the base station according to the wave beam identification information received from least one UE, it is determined that Second beam set, second beam set include at least one second wave beam；Described in being sent in the second class subframe at least Second homochronousness signal of one the second wave beam, according to the second homochronousness signal, carry out the second Time and Frequency Synchronization or channel The detection of signal corresponding to estimation and demodulation or wave beam.
19. UE as claimed in claim 18, it is characterised in that：
The processing unit, it is additionally operable to detect base station ripple according to used in the channel sent in the second class subframe Beam, the 3rd beam set is determined, wherein, the 3rd beam set includes at least one 3rd wave beam, in second class Second homochronousness signal of at least one 3rd wave beam that frame is sent.
20. UE as claimed in claim 18, it is characterised in that：
The processing unit, it is additionally operable to detect base station ripple according to used in the channel sent in the second class subframe Beam, the 3rd beam set is determined, wherein, the 3rd beam set includes at least one 3rd wave beam, according to the 3rd ripple Constriction is not belonging to the wave beam of second beam set in closing, determine the 4th beam set, wherein, the 4th beam set bag Containing at least one 4th wave beam, in the second homochronousness letter at least one 4th wave beam that the second class subframe is sent Number.
21. the UE as any one of claim 18 to 20, it is characterised in that：The first kind synchronizing signal of same wave beam and Second homochronousness signal is located at the distinct symbols of same subframe in the first kind subframe；
The processing unit, specifically for according to the first kind synchronizing signal and the second homochronousness signal described first The default time-domain position relation having respectively in class subframe, determines cyclic prefix CP length；And according to the first kind The frame header position of synchronizing signal binding, carries out frame synchronization.
22. the UE as any one of claim 18 to 20, it is characterised in that：The first kind synchronizing signal of same wave beam and Second homochronousness signal is located at the different frequency domain positions of the same-sign of same subframe in the first kind subframe；
The processing unit, specifically for according to the first kind synchronizing signal and the second homochronousness signal described first The default frequency domain position relation having respectively in class subframe, determines cyclic prefix CP length；And according to the first kind The frame header position of synchronizing signal binding, carries out frame synchronization.
CN201610824695.4A 2016-09-14 2016-09-14 Sending method, synchronous method, base station and the UE of signal Pending CN107820258A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020098409A1 (en) * 2018-11-14 2020-05-22 深圳市中兴微电子技术有限公司 Time synchronization method and device, and storage medium
CN114158056A (en) * 2021-11-25 2022-03-08 中国电子科技集团公司第五十四研究所 Quick access method for low-orbit constellation system
WO2023104037A1 (en) * 2021-12-06 2023-06-15 大唐移动通信设备有限公司 Method and apparatus for acquiring beam information, and device and storage medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020098409A1 (en) * 2018-11-14 2020-05-22 深圳市中兴微电子技术有限公司 Time synchronization method and device, and storage medium
CN114158056A (en) * 2021-11-25 2022-03-08 中国电子科技集团公司第五十四研究所 Quick access method for low-orbit constellation system
WO2023104037A1 (en) * 2021-12-06 2023-06-15 大唐移动通信设备有限公司 Method and apparatus for acquiring beam information, and device and storage medium

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