CN109906591A - The device and method synchronous for cordless communication network - Google Patents
The device and method synchronous for cordless communication network Download PDFInfo
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- CN109906591A CN109906591A CN201680090597.0A CN201680090597A CN109906591A CN 109906591 A CN109906591 A CN 109906591A CN 201680090597 A CN201680090597 A CN 201680090597A CN 109906591 A CN109906591 A CN 109906591A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2692—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with preamble design, i.e. with negotiation of the synchronisation sequence with transmitter or sequence linked to the algorithm used at the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
- H04J11/0076—Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26136—Pilot sequence conveying additional information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
Abstract
Describe a kind of system and method synchronous for cordless communication network.Wireless communication system sends the SS block for including at least primary synchronization signal, secondary synchronization signal and SS block index.User equipment receives the block sent, and user equipment can extract signal and index from any received piece.Other than SS block index, beam index can also be encoded into each SS block.User equipment can respond appropriately to the received information of institute.
Description
Technical field
This disclosure relates to the transmission of wireless communication field more particularly to synchronization signal.
Background technique
Cellular wireless system is dependent on correctly synchronous.In general, synchronizing is performed by using synchronization signal.Base station
The synchronization signal detected by mobile device is sent, mobile device can be mobile phone, any kind of user equipment, be also possible to
It is the other equipment or similar devices for including wireless communication unit.
Long term evolution (long term evolution, LTE) is the now widely used technology for wireless communication.
In LTE, synchronization signal is periodically sent by base station (base station, BS), for example, being used for frequency division duplex
In the subframe 0 and subframe 5 of each frame of (frequency division duplex, FDD).In LTE, primary synchronization signal
(primary synchronization signal, PSS) and secondary synchronization signal (secondary synchronization
Signal, SSS) with different orthogonal frequency division multiplexing (orthogonal frequency division multiplexing,
OFDM) symbol is sent.It in a cycle, i.e. 5ms, is sent in PSS and each comfortable synchronization blocks of SSS, i.e. an OFDM symbol
Number.UE is by detection PSS and SSS come acquisition time and Frequency Synchronization and cell ID (identity, ID).
One kind can support the new radio (new radio, NR) of the synchronization signal of beam forming access technology is at present
It is developed.For example, multiple wave beams are applied to multiple sync intervals on the synchronization opportunity in a cycle by the base station NR.On the one hand,
Such as base station, access point or the network node for transmitting and receiving point can support that three kinds of beam forming are realized, these three realization sides
Formula is analog beam forming, digital beam-forming and mixed-beam forming.Especially for analog beam forming and mixed-beam
For forming, the maximum quantity of concurrent wave beam may be by the limitation of radio frequency (radio frequency, RF) chain quantity.It is another
Aspect, according to detailed deployment scenario and required overlay area, the number of beams that different network node uses may also be each other
It is different.Therefore it provides the synchronization signal that beam forming can be used to transmit, at the same enable mobile device obtain and track by
The synchronization signal of the flexible beam forming of quantity used by network node, and effective network node operation is provided is one and ask
Topic.
In the solution that one has proposed, multiple and different spatial beams are applied to one in a cycle
The synchronization blocks of the identical quantity on synchronous opportunity.Mapping (being also interpreted beam direction or beam index) between wave beam with it is synchronous
Block is one-to-one and predefined, for example, in synchronization blocks 1, synchronization blocks 2 ... and wave beam 1, wave beam are respectively adopted in synchronization blocks N
2 ... and wave beam N.UE obtains beam index by detection synchronization signal, and can for example, by random access procedure or
The beam information is fed back to network node by uplink feedback.
In the solution that another has proposed, synchronization signal include include cell ID a part PSS, include
The SSS of cell ID remainder and extension synchronization signal (the extended synchronization indexed comprising synchronization blocks
Signal, ESS), wherein each synchronization blocks are OFDM symbols.Each PSS, SSS and ESS triple correspond uniquely to a wave
Beam, and frequency division multiplexing is carried out in one of predetermined quantity (that is, 14) OFDM symbol.For each OFDM symbol, PSS and
SSS follows design identical with LTE, and generates ESS using the product of Zadoff Chu (ZC) sequence and pseudo-random sequence,
Middle notation index is encoded in ZC sequence by different cyclic shifts.UE obtains cell ID by detecting PSS/SSS, and passes through
The sync interval index that detection ESS is obtained.
In the proposal being discussed above, network node realization is restricted.Network node needs to generate the wave of fixed quantity
Beam is equal to the quantity of sync interval.In some implementations, there may be different numbers for network node, for example, being less than or greater than
The wave beam of the quantity of synchronization blocks, however, also network node is required to apply beam forming in a predefined way, this requires unnecessary
Ground increases implementation limitation and modular working.
Summary of the invention
It is described below at one or more synchronization signals (synchronization signal, SS) of predefined period
The method that the wave beam of using flexible quantity sends synchronization signal in block, wherein the predefined period can be SS burst or SS burst
Collection.In synchronization signal provide coding cell ID, spacer block index, transmit and receive point (transmit receive point,
TRP) the labeling method of mark and/or beam index is executed by obtaining synchronism and/or wave beam to suitable biography with allowing UE
The continuous search of defeated point, even if when UE does not know the quantity of the wave beam used at network node.Specifically, it allows network section
Point sends multiple wave beams in a SS block simultaneously, while it also allows the SS of network transmission flexible number in a SS burst
Block.
In a first aspect, disclosing a kind of network node comprising processor, for wireless communication.Processor is configured
To provide at least one SS block, wherein at least one described SS block includes at least primary synchronization signal and secondary synchronization signal.Processing
Device is additionally configured to SS block indexing coding into each synchronization signal (SS) block.Network node further includes transceiver, is matched
It is set to and sends the SS block.In some terms, SS block can be SS burst, and correspondingly, SS block index to can be SS prominent
Hair index.
Network node sends multiple synchronization signals, each synchronous letter in multiple SS blocks that identical SS happens suddenly or SS burst collects
Number include at least PSS and SSS and possible ESS, wherein each synchronization signal include SS block index information.Network section
Point can be propagated in a proprietary way in each SS block with beamforming patterns, that is, how not limit network node in SS
Wave beam is applied in block.Specifically, SS block index can be encoded in various ways, for example, being compiled in PSS by modulating ZC sequence
Code, perhaps by reusing SSS sequence in the middle coding of SSS/ extension synchronization signal (ESS) or being divided into more than one part, each
Part corresponds to PSS, SSS and may be in one in the middle another part sent of Physical Broadcast Channel (PBCH).Furthermore it is possible to
Coding is different from the different network nodes marks except cell ID, such as TRP mark in synchronization signal, this allow UE with
Multiple TRP in same cell are synchronous.UE obtains SS block index from the synchronous signal sequence resource detected.UE can use SS
Block index is fed back, to help eNodeB to obtain associated beam information, for example, implicitly.
In the first embodiment of first aspect, transceiver is configured with multiple wave beams to send the SS block.
Beam forming gain is provided using multiple wave beams to extend the coverage area of the synchronization signal in SS block.
In the second embodiment of first aspect, the SS block also includes at least additional secondary synchronization signal and physical broadcast
One in channel information.Permission SS block further includes that other signals in addition to primary synchronization signal and secondary synchronization signal are advantageous
's.It allows network node to send the other information in addition to information in PSS and SSS, for example, System Frame Number (system
frame number,SFN)。
In the third embodiment of first aspect, the processor is configured to by synchronization blocks index coding to institute
State at least two in primary synchronization signal, secondary synchronization signal, appended synchronization signal and Physical Broadcast Channel information.When SS block indexes
When being divided into multiple portions and respectively including in different types of signal, network node can be freely selected the SS
A part coding to which signal of block index is efficient.This further offers flexibilities.Network node can be free
How selection divides SS block index and SS block index is divided into several parts.
In the 4th embodiment of first aspect, the quantity of the SS block is from 1 to N, and wherein N is predefined maximum
Value.Allow to be advantageous using the synchronization blocks of any amount between 1 and predefined maximum value.This allows network node
The SS block used of flexible number is selected, this further results in the flexible expense of synchronization signal.In the 5th embodiment party of first aspect
In formula, the processor is configured to by the SS block index coding to it is following it is any in: the primary synchronization signal, wherein institute
It states processor to be additionally configured to for Zadoff Chu sequence being multiplied with appended sequence to obtain primary synchronization signal sequence, wherein described
Appended sequence is used in encoding the SS block index；Or the appended synchronization signal, wherein the processor is configured
To obtain the appended synchronization signal from arrangement set identical with the secondary synchronization signal；Or the assist in synchronization letter
Number, wherein the period of the secondary synchronization signal is the integral multiple of a system-frame.By being compiled in PSS to SS block index
Code, it is advantageous to which UE can obtain SS block index from PSS sequence resources, without increasing the signaling overheads in SSS.By in weight
SS block index is encoded in the appended synchronization signal of arrangement set identical with SSS, because meeting additional function
Existing synchronization signal designs/detection can be farthest continued to use so being advantageous simultaneously.By encoding SS block rope in SSS
Draw, it is advantageous to which UE can obtain SS block index from SSS sequence, without increasing the signaling overheads in PSS.
In the sixth embodiment of the first aspect of the device and method synchronous for cordless communication network, the processing
Device is additionally configured to encode beam index into each of at least one SS block.In the 6th embodiment party of first aspect
In formula, other than SS block index, beam information (for example, beam index) is encoded also in synchronous signal sequence.With
Total associated wave beam sum of synchronous signal sequence is predefined.The wave beam of flexible number can be used in network, and quantity is answered
No more than predefined wave beam sum.UE obtains SS block index and beam information from the synchronous signal sequence detected.UE
The beam information can be used to feed back to network node.
In the 7th embodiment of first aspect, the quantity of the beam index is encoded at least one described SS block
In, the quantity is from 1 to M, and wherein M is predefined maximum value.Allow using quantity any between 1 and predefined maximum value
Wave beam be advantageous.This allows network node to apply beam forming using different realizations, for example, analog/hybrid/number
Beam forming.Particularly, this concurrent transmission for allowing the multiple wave beams of network node applies, is opened with the control for further providing for reduced
Pin or finer beam resolution.
In the 8th embodiment of first aspect, the processor also encodes TRP mark and cell ID to described
In each of at least one SS block.It is advantageous in SS block including additional network node mark relevant information, because
When UE is connected to multiple TRP in cell, it provides a possibility that identifying network for UE.
In the second aspect of the device and method synchronous for cordless communication network, provide a kind of for wireless communication
User equipment.The user equipment includes: transceiver, is configured as receiving one including at least primary synchronization signal and secondary synchronization signal
A SS block；Processor is configured as extracting SS block index from received SS block.
In the first embodiment of second aspect, the user equipment be configured as by decode it is following any one come from
The SS block index is extracted at least one described received SS block: being multiplied obtained from by Zadoff Chu sequence with appended sequence
The primary synchronization signal, wherein the appended sequence to the SS block index encode, or from it is described it is auxiliary it is synchronous believe
The additional secondary synchronization signal or the secondary synchronization signal obtained in number identical arrangement set, wherein the secondary synchronization signal
Period be a system-frame integral multiple.By being encoded in PSS to SS block index, it is advantageous to which UE can be from PSS
Sequence resources obtain SS block index, without increasing the signaling overheads in SSS.By reusing arrangement set identical with SSS
SS block index is encoded in appended synchronization signal, because can farthest be continued to use while meeting additional function existing
There is synchronization signal designs/detection, so being advantageous.By encoding SS block index in SSS, it is advantageous to which UE can be from SSS
Sequence obtains SS block index, without increasing the signaling overheads in PSS.
In the second embodiment of second aspect, the processor is additionally configured to obtain beam index and TRP identity
Any one of.In SS block include additional network node mark relevant information be advantageous because when UE be connected to it is small
When multiple TRP in area, a possibility that it provides identification network for UE.It is described in the third embodiment of second aspect
User equipment is configured as to obtain from any one that SS block index, the beam index and the TRP are identified
Uplink transmission.It is advantageous from the transmission of received information acquisition uplink, so as to logical between network and UE
Letter selects best possible condition.
In the third aspect of the device and method synchronous for cordless communication network, disclose a kind of for wirelessly communicating
Method.This method includes providing at least one SS block, wherein at least one described SS block includes at least primary synchronization signal and auxiliary
Synchronization signal；SS block index coding into each SS block and is sent at least one described SS block.SS block is indexed and is encoded
It is beneficial into the SS block of each transmission.This will allow UE to obtain SS block index, even if only having received a SS at UE
Block.
In the first embodiment of the third aspect, this method further includes that at least one described SS is sent using multiple wave beams
Block.Beam forming gain is provided using multiple wave beams to extend the coverage area of the synchronization signal in SS block.In the third aspect
In second embodiment, the SS block further includes additional at least one of secondary synchronization signal and Physical Broadcast Channel.Allow SS
Block further includes that other signals in addition to primary synchronization signal and secondary synchronization signal are advantageous.It allows network node transmission to remove
Other information in PSS and SSS except information, for example, System Frame Number (SFN).
In the third embodiment of the third aspect, this method further includes that synchronization blocks index coding is same to the master
Walk at least two in signal, secondary synchronization signal, appended synchronization signal and Physical Broadcast Channel information.When SS block index is divided into
Multiple portions and when respectively including in different types of signal, network node, which can freely select, indexes the SS block
A part coding to which signal be efficient.This further provides for flexibility.
In the 4th embodiment of the third aspect, the quantity of at least one SS block is from 1 to N, and wherein N is predetermined
The maximum value of justice.Allow to be advantageous using synchronization blocks any number of between 1 and predefined maximum value.This allows network
Node selects the SS block of flexible number used, and further results in the flexible expense of synchronization signal.
In the 5th embodiment of the third aspect, this method further includes by SS block index coding to the main synchronization
Any in signal or the appended synchronization signal or the auxiliary synchronous signal, wherein the method also includes: it is logical
It crosses and Zadoff Chu sequence is multiplied with appended sequence to obtain primary synchronization signal sequence, wherein the appended sequence is in coding institute
State and used in SS block index, wherein this method further include obtained from arrangement set identical with the secondary synchronization signal it is described
Appended synchronization signal, wherein the period of the secondary synchronization signal is the integral multiple of a system-frame.By in PSS to SS block rope
Introduce row coding, it is advantageous to which UE can obtain SS block index from PSS sequence resources, without increasing the signaling overheads in SSS.
By encoding in the appended synchronization signal for reusing arrangement set identical with SSS to SS block index, this is favourable, because
Can farthest to continue to use existing synchronization signal designs/detection while meeting additional function.By being encoded in SSS
SS block index, it is advantageous to which UE can obtain SS block index from SSS sequence, without increasing the signaling overheads in PSS.
In the sixth embodiment of the third aspect, this method further includes encoding beam index at least one described SS
In each of block.UE is received and the use of from the received all information of network is beneficial.It can more effectively utilize resource
And improve the availability of equipment.In the 7th embodiment of the third aspect, it is encoded to described at least one described SS block
The quantity of beam index is from 1 to M, and wherein M is predefined maximum value.Allow using between 1 and predefined maximum value
The wave beam of usage quantity is advantageous.This allows network node to apply beam forming using different realizations, for example, simulation/
Mixing/digital beam-forming.Particularly, this concurrent transmission for allowing the multiple wave beams of network node applies, to further provide for subtracting
Few control overhead or finer beam resolution.
In the 8th embodiment of the third aspect, this method further includes being encoded to TRP mark and network identity at least
In each of one SS block.It include that additional network node mark relevant information is advantageous in SS block, because working as
When UE is connected to multiple TRP in cell, it provides a possibility that identifying network for UE.
In the fourth aspect of the device and method synchronous for cordless communication network, provide a kind of for wirelessly communicating
User equipment method.This method includes receiving SS block, wherein the SS block includes at least primary synchronization signal and auxiliary synchronous letter
Number, and the SS block index is extracted from received SS block.User equipment receives transmission and is advantageous, wherein each SS block includes
SS block index.Therefore, required all information can be synchronized to obtain by only receiving a SS block.
The device and method and method for wireless communications synchronous for cordless communication network disclosed above provide
Effective mechanism for synchronizing information needed for being provided from from network side to user equipment.It is particularly advantageous to which disclosed above set
Set is in the network of beam forming, wherein can eliminate multiple limitations by using above-mentioned aspect and realization.It retouches below
In the embodiment stated, these and other aspects of the invention be will be apparent.
Detailed description of the invention
In order to which the disclosure and its advantage is more fully understood, following description is referred to now in conjunction with attached drawing, in which:
Fig. 1 a shows the schematic diagram of the network node and UE that interact in a wireless communication system；
Fig. 1 b shows the example of method used in wireless communication system；
Fig. 1 c shows the example of method used in wireless communication system；
Fig. 1 d shows the example of network node used in wireless communication system；
Fig. 2 shows the signaling diagrams of wireless communication system；
Fig. 3 shows the example of synchronization signal；
Fig. 4 shows the example of SS block relevant to wave beam；And
Fig. 5 shows the example of SS block.
Specific embodiment
The detailed description provided below in conjunction with attached drawing is intended as the description of embodiment, and is not intended to indicate to construct or utilize
The unique forms of embodiment.However, it is possible to realize identical or equivalent function and structure by different embodiments.
In the following description, extensive discussions synchronization signal block (SS block) and synchronization blocks index (SS block index).SS block is used
In carrying different signal and information.SS block index is the index of SS block in a period of time, such as synchronization signal (SS) burst.Example
It such as, include the information of these three SS blocks if corresponding SS block indexes if SS burst includes three SS blocks.Other are used for identical mesh
Expression in addition, such as synchronization signal interval, synchronization signal opportunity, synchronizing symbol or similar.However, for example, synchronous letter
Number interval synchronization signal interval index between difference correspond to above for SS block and SS block index description difference.
Fig. 1 a shows the wireless communication system with a base station 100 and a user equipment 108.In order to clearly rise
See, illustrates only a base station and user equipment.In general, wireless communication system is related to larger numbers of base station, these base station quilts
Connection is to serve larger numbers of user.The base station of Fig. 1 a includes signal processing circuit 101, beam-shaper 102 and two
Antenna 103a, 103b.Network connection 105 is for being connected to core network 105 for base station 100.Signal processing circuit includes at least
One processor 106 and at least one processor 107, they are configured to handle and generate the signal that will be further sent.
Processing includes several different tasks relevant to synchronous and synchronization signal.It includes coming from signal processing that beam-shaper 102, which receives,
The signal of the synchronization signal of circuit 101, and the form of beam forming is supplied to transceiver 104, transceiver 104 uses transmission day
Line 103a, 103b send wave beam.The quantity of antenna is not limited to two.
As shown in Figure 1a, base station 100 is configured as sending data at least one user equipment 108.Receive the spy of data
Fixed processing and the appropriate response to the synchronization signal received.User equipment can be mobile phone, smart phone or similar set
It is standby.
As shown in Figure 1 b, the one aspect of method used in wireless communication system, such as the base station 100 of Fig. 1 a are disclosed
Or the network node 118 of Fig. 1 d.In the method, SS block, such as step 111 are provided first.In this example, SS block index is subsequent
It is encoded into SS block, such as step 112.Then, the SS block of coding, such as step 113 are sent.Transmission can be with the shape of beam forming
Formula carries out.But this is not necessary.
As illustrated in figure 1 c, another embodiment of the method used in a wireless communication system is disclosed, such as Fig. 1 a
System.In the method, SS block, such as step 114 are provided first.In this example embodiment, SS block index is then encoded into SS block,
Such as step 115.Other than SS block index, beam index is also encoded into SS block, such as step 116.In the example of Fig. 1 c,
Sending step 117 be in beam forming form, however, even if using beam forming communication, also need not be with beam forming
Form send SS block.
Fig. 1 d shows the one aspect of wireless communication system.In the figure, network element 118 is shown.Network element
118 include processor 119.Also optionally include beam-shaper 120.Network element 118 is configured as executing according to Fig. 1 b's
Method.Optionally, network element 118 is configured as the method for executing Fig. 1 c.When executing the method for Fig. 1 c, network node 118
In include beam-shaper 120.
Fig. 2 shows the signaling diagrams of wireless communication system.The network node 200 of such as base station is configured as and user equipment
(user equipment, UE) 201 is communicated.Network node 200 sends user for the signal 202 including at least one SS block and sets
Standby 201.SS block includes primary synchronization signal and auxiliary synchronous signal.Synchronization signal block is sent in the form of beam forming.Each SS block
It further include SS block index.SS block can also include beam index.
According to received signal, UE 201 obtains downlink synchronization information and possible preferred beam information.
In addition, UE 202 is configured as indicating beam information and/or synchronizing information to network node, to obtain preferred downlink
Beam information.
In the figure 2 example, the synchronous signal sequence money of the wave beam and fixed quantity of 200 node using flexible quantity of network
Source sends synchronization signal, and each synchronous signal sequence resource is associated with SS block unique in the SS block of fixed quantity.UE201
SS block message is obtained from the synchronous signal sequence resource detected.
The wave beam (X) for the flexible number that network node is happened suddenly using synchronization signal or synchronization signal burst is concentrated is same to send
Signal 202 is walked, synchronization signal burst collection includes the SS block of flexible number (T), wherein P wave beam is applied in each SS block,
Wherein 1≤P≤M and 1≤T≤N, and M and N are predefined, for example, in a standard.Before initial access, each
The number of beams P of SS block is not necessarily known in UE.
Fig. 3 provide in synchronization signal (SS) burst set for including multiple SS burst to primary synchronization signal (PSS) and
The example that secondary synchronization signal (SSS) is transmitted, wherein each SS burst includes multiple SS blocks.For PSS, SSS and possibility
Other signals, such as common broadcast channel (public broad cast channel, PBCH) will answer in a SS block
With identical beam direction.These signals in one SS block can be time division multiplexing (time division
Multiplexed, TDM), i.e., as shown in figure 3, or frequency division multiplexing (FDM).One SS block can be an OFDM symbol, or appoint
What his predefined time interval.Transmitting and receiving point (TRP) can be used P (P≤M) a wave beam of each SS block and each
A SS block of T (T≤N) of SS burst realizes the synchronization signal of beam forming, wherein " nominal " expression is predefined in Fig. 3
Maximum value (M and N), " reality " indicate the value that TRP is used according to its beamforming capability.Note that this includes transmitting to simple beam
Support, for example, as P=T=1.UE requires no knowledge about the reality of actual beam number and SS block for decoding synchronization signal
Border quantity, because identical synchronization and cell search process (for example, sliding window) can be used.It is detected from any SS block
When to SS, information of searching sector can be obtained.
In fig. 4 it is shown that the quantity of the SS block of coverage area identical with realization for the number of beams of each SS block
Selection.The quantity of wave beam X can be equal to the quantity of SS block N, and still, it needs not be equal.In one embodiment, X is equal to
N.Network node can be with the beam forming of application order, that is, each beam direction corresponds to a SS block；In another embodiment
In, X is greater than N.This is it is particularly advantageous that for example, using mixed-beam in some realizations for allowing the multiple wave beams of concurrent transmission
Forming or digital beam-forming.Network node can be at least one SS block using the concurrent of multiple beam forming synchronization signals
Transmission.The concurrent transmission of the synchronization signal of multiple beam formings can be labeled, for example, passing through different synchronization signal sequences
Column.The synchronous signal sequence of identical SS block can have for the same label of SS block index and for the difference of beam index
Label.Concurrent multi-beam transmission can be used for realizing broader wide block angular breadth, to reduce the quantity of SS block, to reduce expense, such as
Shown in Fig. 4.Concurrent multi-beam transmission can also be used for realizing better beam resolution on the SS of given quantity, in a SS block
The broad beam to be sent can be divided into multiple concurrent narrow beams；In another embodiment, X is less than N.Network node can be with
One beam direction is applied to multiple SS blocks.This is particularly useful for some realizations for generating broad beam, for example, having limited
The network node of the antenna element of quantity.
Above-mentioned arrangement is advantageous, because not limiting strictly the number of beams for sending synchronization signal, and not
The mapping between the SS block and wave beam in SS burst or SS burst collection must be pre-defined.
Next the coding of the SS block index in PSS or SSS will be explained.SS block index is provided in synchronous signal sequence
It is encoded in source, for example, using the processor of base station.Synchronization signal resource is the container of SS block index, one of synchronous letter
Number sequence corresponds to an index.Multiple synchronous signal sequence resources are predefined in a standard, and sum is equal to SS block most
Big quantity, i.e. N.Relationship between N number of synchronization signal resource and N number of SS block is one-to-one and predefined.Synchronous signal sequence
Resource can be the combination of PSS sequence, SSS sequence or PSS sequence and SSS sequence.Synchronous signal sequence resource is also possible to
PSS sequence group, SSS sequence group, the combination of PSS sequence group and SSS sequence group, the combination of PSS sequence and SSS sequence group or PSS
The combination of sequence group and SSS sequence.
In one embodiment, SS block index is encoded in PSS sequence.Each synchronous signal sequence resource includes difference
PSS sequence.Network sends multiple PSS sequences in multiple SS blocks.Each PSS sequence is associated with a unique SS block.
An associated example is given in table 1.PSS sequence can be Zadoff-Chu sequence defined in LTE or any other
Sequence, which may include or the cell-specific information not comprising such as cell ID.
Being associated between 1. synchronous signal sequence resource of table and SS block
| Synchronous signal sequence resource index | SS block index |
| 0 | 0 |
| 1 | 1 |
| … | … |
| N-1 | N-1 |
This is favourable, because UE can obtain SS block index from PSS sequence resources, while also not increasing the letter in SSS
Enable expense.
PSS sequence can be generated by being modulated to the sequence indexed with SS block, for example, passing through following formula
cS(n)=du(n)bS(nmodm), n=0,1 ..., L-1
L=tm in the equations, and t and m are positive integer, du(n) be have root index μ defined in the 3GPP LTE
The nth elements of the ZC sequence of L length, bSIt (nmodm) is n-th mod m element of the length for the sequence of m, sequence limitation
It to be made of the plural number with identical (unit) amplitude, and is obtained from SS block index, that is, each SS block corresponds to unique sequence code
{bS(nmodm)}。
This is favourable, because UE obtains cell-specific information, i.e. the cell ID from used root index μ from PSS
A part, while can also obtain SS block index.It should be noted that in this case, one group of PSS sequence is related to a SS block
Connection, i.e. their one synchronization signal resources of composition.
In one embodiment, SS block index is encoded in SSS sequence.Each synchronous signal sequence resource includes difference
SSS sequence.Network sends multiple SSS sequences in multiple SS blocks.Each SSS sequence is associated with a unique SS block.
SSS sequence can be sequence defined in LTE or any other sequence, which may include the cell of such as cell ID
Specific information or any other information.This is favourable, because UE can obtain SS block index from SSS sequence, without increasing PSS
In signaling overheads.
In one embodiment, SS block indexes SIDIt is jointly encoded in PSS and SSS.SIDIt isWithFunction,
WhereinIt is encoded in PSS sequence,It is encoded in SSS sequence.In one embodiment, exist by { 0,1,2,3 }
Four SS blocks of index,From { 0,1 },From { 0,1 }, andThis is favourable, because
The instruction of SS block index can pass through settingWithBy flexible allocation to PSS and SSS, to realize better performance and answer
Polygamy tradeoff.
In Fig. 5, another embodiment is disclosed.In this embodiment, each PSS and SSS (i.e. SSS1) and one
A appended synchronization signal (i.e. SSS2) is associated.SSS1 is for carrying cell ID, as in LTE.SSS2 uses identical
The subset of set or SSS sequence indicates additional information.Detailed design can be found in Fig. 5, wherein each SS block includes pair
It should be in PSS, SSS1, SSS2 and the PBCH of same beam.In LTE, for the coding of frame timing, it to be used for preceding field and rear field
SSS sequence it is different, for example, first half is 168 sequences, latter half is 168 sequences.Therefore, SSS2's is total available
Sequence is 336.This is favourable, because it includes the additional of SS block index and beam index to load that SSS sequence, which can be reused,
Information.In addition, SSS detector can be reused in SSS1 and SSS2, because they share identical arrangement set.
In another embodiment, each PSS is related to a SSS (i.e. SSS1) or one appended synchronization signal (i.e. SSS2)
Connection.SSS2 indicates the information in addition to SSS1, such as SS block index and/or beam index information using part SSS sequence.Tool
It says to body, SSS1 carries cell ID using preceding 168 sequences, and only sends in the preceding field of each frame.In this way, can be with
Frame timing information is directly obtained by detecting SSS1.In addition, SSS2 uses rear 168 SSS sequences of all 336 SSS sequences,
And it is only sent in the rear field of each frame.The selection of SSS2 sequence is unrelated with the selection of SSS1 sequence, and can be used for carrying
Additional information.For example, it is assumed that rear 168 SSS2 sequences can be divided into 14 groups there are 14 SS blocks, each group includes 12
SSS2 sequence.Each group uniquely associated with a sync interval, and each SSS2 sequence in a group and a wave
Beam index is uniquely associated.This is favourable, because existing synchronization signal designs/detection can meet additional function
It farthest continues to use simultaneously.
In another embodiment, SS block index combined coding in synchronous signal sequence and PBCH.In LTE, in first half
Different SSS sequences is used in frame and rear field.Assuming that the period of SS increases to compared with long value from half of system-frame (for example, one
System-frame), after can reusing the different SSS sequences of field with indicate SS block index two states.It can be in associated PBCH
Other remaining SS block indexes of middle instruction.This is favourable, will be simple because the design of existing synchronous signal sequence can be reused
Change and realizes and standardize.
SS block index can be transmitted in PBCH by reusing the existing information bit in LTE.When synchronizing cycle is into one
Step increases, for example, increasing to several system-frames, which be can be adjusted.In one embodiment, the SS period increases to
80ms, i.e. 8 frames.Then, when detecting PSS/SSS and obtaining SS block index, the frame index in every 8 frames is also available
, it means that for saving 3 bits in the field of System Frame Number instruction in PBCH.3 bits of the preservation can be used for
Indicate the 2 of SS block3=8 states are without increasing PBCH expense.In conjunction with SSS sequence save two state instructions ability,
16 states will be stored in the case where not increasing the bit number in the quantity or PBCH of synchronous signal sequence.This is suitable for SS block
Index is divided into two parts, and a part is in synchronization signal, and another part is in PBCH.This is favourable, because of existing synchronization
Signal sequence design and PBCH design can be reused, and will simplify realization and standardization.
In another embodiment, beam information can be associated with SS block index.It is that this, which is associated at network node,
It is knowing but be unknown to UE.UE is explicitly (for example, uplink control signaling) or implicitly (for example, selected physics
Random access channel (physical random access channel, PRACH) resource) feedback SS block index.Then, network
Node obtains beam information in being associated between used wave beam and SS block.Refer to this is because network node contains UE
The information of which wave beam has been used in the specific SS block shown.This is favourable, because of the available at least partly wave of network node
Beam information.In the case where in each SS block only with a wave beam, all beam informations can be unambiguously obtained.
In another embodiment, the wave beam X of network node using flexible quantity and the synchronous signal sequence of flexible number money
Source T sends synchronization signal, wherein each T is associated with unique SS block.N number of synchronous signal sequence resource includes multiple in total
Synchronous signal sequence, each synchronous signal sequence are associated with a wave beam.N number of synchronous signal sequence resource and predefined in total
Maximum quantity beam index M it is associated.UE obtains explicit beam information from the synchronous signal sequence resource detected.
In one embodiment, using predefined maximum numbers of beams M.Other than SS block index, also in synchronization signal
Beam information is encoded in sequence.The wave beam M of maximum quantity is predefined.The detailed radiative mode of each wave beam depends on network
Node is realized and is unknown at UE.As having disclosed in the first embodiment, the quantity of wave beam X need not be by SS block
The limitation of the quantity of N.UE does not have the information of X before initial access.However, UE has the information and N number of synchronization signal of M
Sequence resources are associated with M beam index.For network node, N number of synchronous signal sequence resource only includes being mapped to X wave
The sequence of beam, for example, wave beam ID { 0,1 ..., X-1 }.This is favourable, because UE can be between synchronization signal and wave beam
Predefined association obtains wave beam ID.Then wave beam ID can be fed back into network node.
In one embodiment, N number of synchronous signal sequence resource is associated with M wave beam.One synchronous signal sequence money
Source is uniquely associated and also associated with wave beam with a SS block index, as shown in table 2.
2. synchronous signal sequence resource of table, the association between SS block and wave beam
| Synchronous signal sequence resource index | SS block index | Wave beam ID |
| 0 | 0 | 0,1 ..., M-1 } or its subset |
| 1 | 1 | 0,1 ..., M-1 } or its subset |
| … | … | 0,1 ..., M-1 } or its subset |
| N-1 | N-1 | 0,1 ..., M-1 } or its subset |
This is favourable, because the reduction of feedback signaling may be implemented.Since synchronous signal sequence is generally included for small
The information of area's ID and SS block index, therefore the sum for the information state for including in synchronous signal sequence is typically larger than the number of wave beam
Amount.In one example, if there is 504 cell index and 10 SS blocks, then the quantity of information state is 5040, and most
Big number of beams can be much smaller, for example, M=16.Therefore, wave beam ID can be used in UE, rather than uses synchronous signal sequence
Index is to feed back less information.
In one embodiment, synchronous signal sequence resource includes one group of SSS sequence, which includes being used for SS block
The information of index, cell ID and wave beam ID.SSS sequence carries identical SS block in associated with synchronous signal sequence resource group
Index, but there is different wave beam ID.Arrangement set with identical SS block index forms a synchronous signal sequence resource.
The information of SS block index can be the index selected from N number of value, i.e., { 0,1 ..., N-1 }.The information of cell ID can be cell
Index, is also possible to a part such as the cell index in LTE.Information for wave beam ID, which can be, to be selected from M value
Index, i.e., { 0,1 ..., M-1 }.This is favourable, is applied to enable wave beam to reach its maximum spirit in each SS block because existing
Activity, i.e., up to M concurrent wave beams.
As the special circumstances of table 2, wave beam ID associated with synchronous signal sequence resource can be only { 0,1 ..., M-
1 } subset.In one embodiment, wave beam ID is classified as N number of group, wherein each with unique synchronous signal sequence resource
It is associated.For example, by assuming that N=4 and M=8, this is associated in following table 3 and shows.
Association of the table 3. between synchronous signal sequence resource, SS block and wave beam.Wherein, N=4, M=8, and it is each
A synchronous signal sequence resource is only associated with the subset of wave beam ID
In this case, wave beam ID and SS block index are associated with jointly with synchronizing sequence resource.Part synchronous signal sequence
Beam information quantity can be reduced.It note that UE needs to know this association from the synchronous signal sequence detected
Obtain SS block index and wave beam ID.This is favourable, because the synchronous signal sequence quantity of reduction can be scheduled in a standard
Justice.In this embodiment, the information state sum of each synchronous signal sequence resource is reduced to 2 from 8.This allows in each SS block
Be up to 2 concurrent wave beams.It is similar with the previous embodiment only with SS block index, it can combine in synchronization signal and PBCH
Beam information is encoded, to reuse LTE design.
In all the described embodiments, UE can connect work with the multiple of network, for example, being connected to identical
Multiple wave beams (that is, cell ID having the same) of difference TRP in multiple wave beams of TRP or same cells, or it is even different
Multiple TRP in cell.Particularly, for being connected to the UE of multiple TRP of same cells, it is expected that synchronization signal designs can permit
Perhaps UE obtains TRP information to maintain multiple TRP connections.TRP information can similarly be encoded with the embodiment of front, such as
TRP ID in PSS, SSS, ESS, PBCH or their combination.
It has been combined various embodiments herein and describes the system and method synchronous for cordless communication network.However,
By studying attached drawing, disclosure and appended claims, those skilled in the art can when practicing invention claimed
To understand and realize other modifications of disclosed embodiment.In the claims, word " comprising " is not excluded for other elements or step
Suddenly, and indefinite article "a" or "an" be not excluded for it is multiple.Single processor or other units may be implemented in claim
Several functions of recording.Certain measures this simple facts is quoted from mutually different dependent claims does not indicate these
The combination of measure can not be used favorably.Computer program can store/be distributed on appropriate media, for example, with other hardware one
Optical storage medium or solid state medium that a part provided or as other hardware provides are acted, but can also be divided otherwise
Cloth, such as pass through internet or other wired or wireless telecommunication systems.
Claims (15)
1. a kind of network node (100) for wireless communication, comprising:
Processor (106), is configured as:
There is provided (111) at least one synchronization signal SS block, wherein the SS block include at least primary synchronization signal (PSS) with it is auxiliary synchronous
Signal (SSS, SSS1)；
SS block is indexed into coding (112) into each SS block；And
Transceiver (104) is configured as sending (113) described SS block.
2. network node according to claim 1, wherein the transceiver (104) is configured with multi-beam transmission
(115) synchronization blocks.
3. network node according to claim 1 or 2, wherein the SS block further includes additional secondary synchronization signal (SSS2)
At least one of with Physical Broadcast Channel information (PBCH).
4. network node according to any one of claim 1-3, wherein the processor is configured to by the synchronization
Block index coding to the primary synchronization signal (PSS), the secondary synchronization signal (SSS, SSS1), appended synchronization signal (SSS2) and
At least two in Physical Broadcast Channel information (PBCH).
5. network node described in -4 according to claim 1, wherein the quantity of the SS block, from 1 to N, wherein N is predefined
Maximum value.
6. network node according to any one of claims 1-5, wherein be configured as will be described for the processor (106)
During SS block index coding (112) is any extremely below:
The primary synchronization signal (PSS), wherein the processor (106) is additionally configured to Zadoff Chu sequence and adds
Sequence is multiplied to obtain primary synchronization signal sequence, wherein the appended sequence is used in encoding the SS block index, or
The appended synchronization signal (SSS2), wherein the processor (106) be configured as from the secondary synchronization signal
(SSS1) the appended synchronization signal (SSS2) is obtained in identical arrangement set, or
The secondary synchronization signal (SSS, SS1), wherein the period of the secondary synchronization signal (SSS, SSS1) is a system-frame
Integral multiple.
7. network node according to claim 1 to 6, wherein the processor (106) is additionally configured to wave
Beam index coding (116) is into each of at least one SS block.
8. network node according to claim 7, wherein encoding to the beam index of at least one SS block
Quantity is 1 to M, and wherein M is predefined maximum value.
9. network node according to claim 1 to 8, wherein the processor is also by TRP mark and cell mark
Know in coding to each of at least one SS block.
10. a kind of user equipment (108) for wireless communication, comprising:
Transceiver (109) is configured as receiving at least one including at least primary synchronization signal (PSS) and secondary synchronization signal (SSS)
A SS block；
Processor (110) is configured as extracting the SS block index from received SS block.
11. user equipment according to claim 10, wherein the processor (110) quilt of the user equipment (108)
It is configured to extract the SS block index from least one described received SS block by decoding following any:
Obtained from the primary synchronization signal (PSS) that Zadoff Chu sequence is multiplied with appended sequence, wherein the additional sequence
Column encode SS block index, or
The additional secondary synchronization signal (SSS2) obtained from arrangement set identical with the secondary synchronization signal (SSS1), or
The secondary synchronization signal (SSS, SSS1), wherein the period of the secondary synchronization signal (SSS, SSS1) is a system-frame
Integral multiple.
12. user equipment described in 0 or 11 according to claim 1, wherein the processor is additionally configured to obtain beam index
With any in TRP mark.
13. user equipment according to claim 12, wherein the user equipment be configured as from the SS block index,
Any in the beam index and TRP mark obtains uplink transmission.
14. a kind of method for wireless communications, comprising:
(111,114) at least one SS block is provided, wherein at least one described SS block is including at least primary synchronization signal (PSS) and auxiliary
Synchronization signal (SSS, SSS1)；
SS block is indexed into coding (112,115) into each SS block；And
Send (113,117) described SS block.
15. a kind of wireless communications method, comprising:
SS block is received, wherein the SS block includes at least primary synchronization signal (PSS) and secondary synchronization signal (SSS, SSS1)；And
The SS block index is extracted from received SS block.
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| CN111771363B (en) * | 2018-07-06 | 2021-10-22 | 华为技术有限公司 | Method and device for cell measurement |
| US20210337494A1 (en) * | 2020-04-28 | 2021-10-28 | Samsung Electronics Co., Ltd. | Method and apparatus for indication and transmission of downlink signal/channel for initial access |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060046643A1 (en) * | 2004-09-01 | 2006-03-02 | Kddi Corporation | Wireless communication system, relay station device and base station device |
| US20080268885A1 (en) * | 2007-04-30 | 2008-10-30 | Texas Instruments Incorporated | Low-complexity primary synchronization sequences |
| CN101868928A (en) * | 2007-09-21 | 2010-10-20 | 德克萨斯仪器股份有限公司 | Secondary synchronization signal mapping |
| US8576830B2 (en) * | 2010-04-02 | 2013-11-05 | Broadcom Corporation | Method and system for tracking timing drift in multiple frequency hypothesis testing |
| US20140086173A1 (en) * | 2012-09-26 | 2014-03-27 | Interdigital Patent Holdings, Inc. | Methods, systems and apparatuses for operation in long-term evolution systems |
| CN103763297A (en) * | 2006-12-19 | 2014-04-30 | Lg电子株式会社 | Method and base station for transmitting synchronizing signals, method and terminal for receiving synchronizing signals |
| WO2015172506A1 (en) * | 2014-05-13 | 2015-11-19 | 中兴通讯股份有限公司 | Method for determining transmission time, terminal, base station, system and storage medium |
| CN105191178A (en) * | 2013-05-01 | 2015-12-23 | 三星电子株式会社 | Methods and apparatus for device-to-device communications system |
| CN105981454A (en) * | 2014-01-26 | 2016-09-28 | Lg电子株式会社 | Method for transmitting synchronization signal and synchronization channel in wireless communication system supporting device-to-device communication and apparatus for same |
| US20160308637A1 (en) * | 2013-11-27 | 2016-10-20 | Telefonaktiebolaget L M Ericsson (Publ) | Network node, wireless device, methods therein, for sending and detecting, respectively, synchronization signal and an associated information |
-
2016
- 2016-11-02 CN CN201680090597.0A patent/CN109906591B/en active Active
- 2016-11-02 WO PCT/EP2016/076430 patent/WO2018082768A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060046643A1 (en) * | 2004-09-01 | 2006-03-02 | Kddi Corporation | Wireless communication system, relay station device and base station device |
| CN103763297A (en) * | 2006-12-19 | 2014-04-30 | Lg电子株式会社 | Method and base station for transmitting synchronizing signals, method and terminal for receiving synchronizing signals |
| US20080268885A1 (en) * | 2007-04-30 | 2008-10-30 | Texas Instruments Incorporated | Low-complexity primary synchronization sequences |
| CN101868928A (en) * | 2007-09-21 | 2010-10-20 | 德克萨斯仪器股份有限公司 | Secondary synchronization signal mapping |
| US8576830B2 (en) * | 2010-04-02 | 2013-11-05 | Broadcom Corporation | Method and system for tracking timing drift in multiple frequency hypothesis testing |
| US20140086173A1 (en) * | 2012-09-26 | 2014-03-27 | Interdigital Patent Holdings, Inc. | Methods, systems and apparatuses for operation in long-term evolution systems |
| CN105191178A (en) * | 2013-05-01 | 2015-12-23 | 三星电子株式会社 | Methods and apparatus for device-to-device communications system |
| US20160308637A1 (en) * | 2013-11-27 | 2016-10-20 | Telefonaktiebolaget L M Ericsson (Publ) | Network node, wireless device, methods therein, for sending and detecting, respectively, synchronization signal and an associated information |
| CN105981454A (en) * | 2014-01-26 | 2016-09-28 | Lg电子株式会社 | Method for transmitting synchronization signal and synchronization channel in wireless communication system supporting device-to-device communication and apparatus for same |
| WO2015172506A1 (en) * | 2014-05-13 | 2015-11-19 | 中兴通讯股份有限公司 | Method for determining transmission time, terminal, base station, system and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| PIERRE DUGUE: "《Proposal of Synchronization Indexes of Single Neuron Activity on Periodic Stimulus》", 《2007 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING - ICASSP "07》 * |
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