CN103379079B - The sending method and device of a kind of synchronizing signal - Google Patents
The sending method and device of a kind of synchronizing signal Download PDFInfo
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- CN103379079B CN103379079B CN201210132020.5A CN201210132020A CN103379079B CN 103379079 B CN103379079 B CN 103379079B CN 201210132020 A CN201210132020 A CN 201210132020A CN 103379079 B CN103379079 B CN 103379079B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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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
- H04L27/2603—Signal structure ensuring backward compatibility with legacy system
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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
- 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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Abstract
The invention discloses a kind of sending method of synchronizing signal and device, solving existing wireless communications standard causes the problem of system cost of implementation is high.Described sender method is applied to the communication system using LTE series standards, including：Network side element generates enhanced synchronizing signal；Network side element sends the enhanced synchronizing signal to enhanced terminal, wherein, the running time-frequency resource that the enhanced synchronizing signal is used is different from the running time-frequency resource that basic model synchronizing signal is used.Described device includes：Generation module and sending module.The present invention is strengthened by the synchronizing channel to LTE series standards, can be effectively reduced the power consumption and implementation complexity of terminal, be reduced cost, the need for the data user and the wireless communication industry future development that preferably meet high speed development.
Description
Technical field
The invention belongs to the communications field, and in particular to the sending method and device of a kind of synchronizing signal.
Background technology
With the development and the popularization of smart mobile phone of mobile Internet, mobile data traffic demand is skyrocketed through, quick to increase
Long data service proposes severe challenge to the transmittability of mobile communications network.Predicted according to authoritative institution, it is following 10 years
Interior (2011-2020), mobile data services amount will also be doubled every year, will increase by 1,000 times within 10 years.
Most mobile data services occur mainly in indoor and focus environment, are presented as nomadic/local wireless access
Scene.According to statistics, nearly the 70% of current mobile data services amount occurs indoors, and this ratio will also continue to increase, in advance
Counting will be more than 80% by 2012.Data service is mainly Internet service, and the requirement to service quality is relatively simple, and far
Requirement less than conventional telecommunications business to service quality.
What cell mobile communication systems was mainly directed towards is mobile, the conventional telecommunications service design of seamless switching, when its carrying
During big flow low speed IP (Internet protocol) data packet traffic, efficiency is relatively low, and cost is too high.To use OFDM (Orthogonal
Frequency Division Multiplexing, OFDM) technology LTE (Long Term Evolution, it is long
Phase evolution) exemplified by standard, it is moved to meet in terms of frame structure, resource allocation, control channel, pilot tone, the network architecture
Dynamic, the conventional telecommunications Demand Design of seamless switching, cause system control overhead very big, and also it is complicated to add the realization of product
Degree and cost.In order to adapt to market trend, cellular mobile communication field needs the low cost of oneself, is adapted to nomadic/sheet
The solution of ground radio data access.
Fig. 1 a are FDD (Frequency Division Duplexing, FDD) frame structures in existing LTE standard
Figure a, radio frames include 10 subframes, and each subframe includes 2 time slots.Fig. 1 b are TDD (Time Division
Duplexing, time division duplex) frame assumption diagram, in TDD, a radio frames include two fields, and each field is by 4 data
Subframe and 1 special subframe composition, 1 special subframe include DwPTS (descending pilot frequency time slot), GP (protection time slot) and UpPTS
(uplink pilot time slot) three special time slots.
Existing LTE standard synchronizing signal is as shown in Fig. 2 test finds that the design of existing LTE standard synchronizing signal is to frequency deviation
Very sensitive, as shown in Figure 3 a, when not having frequency deviation, timing performance is very good, as shown in Fig. 3 b or Fig. 3 c, when frequency deviation reaches
During 30kHz or more, terminal can not obtain accurate sync bit based on downlink synchronous signal, and this requires that either base station is also
It is that terminal is required for meeting requirement of the synchronizing signal to frequency deviation using the higher crystal oscillator of cost, is not suitable for reduction operator
Cost, and then influence the sound development of LTE industries.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of sending method of synchronizing signal and device, solve existing wireless
Communication standard causes the problem of system cost of implementation is high.
In order to solve the above technical problems, the invention provides a kind of method for transmitting synchronizing signal, applied to using LTE series
The communication system of standard, methods described includes：
Network side element generates enhanced synchronizing signal；
Network side element sends the enhanced synchronizing signal to enhanced terminal, wherein, the enhanced synchronizing signal
The running time-frequency resource used is different from the running time-frequency resource that basic model synchronizing signal is used.
Further, the running time-frequency resource that the enhanced synchronizing signal is used is in any one in following position：Position
The OFDM symbol used in the basic model synchronizing signal；Positioned at the OFDM symbol adjacent with the basic model synchronizing signal；Position
In first OFDM symbol of a subframe；Positioned at last OFDM symbol of a subframe；Positioned at the first of a time slot
Individual OFDM symbol；Positioned at last OFDM symbol of a time slot；OFDM where physical control format indication signal
Symbol；Positioned at the OFDM symbol where Physical HARQ Indicator Channel；Positioned at the OFDM symbol where Physical Downlink Control Channel；Position
In the OFDM symbol where Physical Downlink Shared Channel；When the communication system uses TDD mode, positioned at special subframe；
When the communication system uses TDD mode, positioned at the previous descending sub frame adjacent with special subframe.
Further, methods described also includes：The network side element generates basic model synchronizing signal, is sent to terminal
The basic model synchronizing signal, the terminal includes enhanced terminal and/or basic model terminal.
Further, when sending basic model synchronizing signal, the network side element is used in the basic model synchronizing signal
OFDM symbol on not by the basic model synchronizing signal take subcarrier on transmission content for sky.
Further, methods described also includes：The network side element does not distribute what the basic model synchronizing signal was used
The subcarrier not taken in OFDM symbol by the basic model synchronizing signal.
Further, the OFDM symbol that the enhanced synchronizing signal of transmission is located at and the basic model sent are same
The intersymbol relative position for the OFDM symbol that step signal is located at is default configuration；Or, the enhanced synchronous letter of transmission
Number information and the intersymbol relative position have corresponding relation.
Further, methods described also includes：The network side element notifies the enhanced terminal by control signaling
Time-frequency location residing for the basic model synchronizing signal, and/or, the network side element notifies the enhancing by control signaling
Type terminal receives the basic model synchronizing signal.
Further, methods described also includes：The network side element is sending the subframe of the enhanced synchronizing signal
On not allocation of transmission resources give basic model terminal.
Further, the subframe where the enhanced synchronizing signal is multicast broadcast single frequency network subframe；
The running time-frequency resource that the enhanced synchronizing signal is used is located at the other positions in addition to following each position：Multicast and broadcast
It is used for transmitting physical control format in Single frequency network subframe to indicate to be used for passing in the OFDM symbol of channel, multicast broadcast single frequency network subframe
It is used for transmitting physical downlink channel control in the OFDM symbol of defeated Physical HARQ Indicator Channel, multicast broadcast single frequency network subframe
OFDM symbol.
Further, the enhanced synchronizing signal includes correction parameter, and the correction parameter is used to receive or solve for terminal
The code basic model synchronizing signal.
Further, the correction parameter includes the one or more of following parameter：It is timing estimation, offset estimation, basic
Arrangement set used in type synchronizing signal.
Further, the basic model synchronizing signal includes master sync signal and/or auxiliary synchronous signals.
Further, the enhanced synchronizing signal that the network side element is sent is synchronous with the basic model sent
Signal is that conjugation is symmetrical or symmetrical in time domain waveform.
Further, arrangement set is with sending used in the enhanced synchronizing signal that the network side element is sent
The basic model synchronizing signal used in arrangement set it is identical.
Further, the enhanced synchronizing signal that the network side element is sent cycle in time domain repeats or the cycle is common
Yoke is symmetrical or periodic symmetry.
Further, the network side element generates enhanced synchronizing signal, including：Generated by permanent mould zero auto-correlation sequence
The enhanced synchronizing signal；Or the enhanced synchronizing signal is generated by Golay sequences；Or generated by m-sequence described
Enhanced synchronizing signal；Or the enhanced synchronizing signal is generated by Walsh sequences.
Further, the enhanced synchronizing signal is used for the mark that current affiliation cell is obtained for enhanced terminal.
In order to solve the above technical problems, present invention also offers a kind of synchronizing signal dispensing device, it is adaptable to using LTE systems
In the communication system of row standard, described device includes：Generation module and sending module, wherein：
The generation module, for generating enhanced synchronizing signal；
The sending module, for sending the enhanced synchronizing signal to enhanced terminal, wherein, it is described enhanced same
The running time-frequency resource that step signal is used is different from the running time-frequency resource that basic model synchronizing signal is used.
By at least one above-mentioned technical scheme of the present invention, the synchronizing channel to LTE series standards strengthens, and reduces
Required precision to crystal oscillator, can effectively reduce the power consumption and implementation complexity of terminal, reduce cost, preferably meet
The need for the data user of high speed development and wireless communication industry future development.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention
Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the frame assumption diagram of LTE series standards, wherein, Fig. 1 a are FDD frame assumption diagrams, and Fig. 1 b are tdd frame structure chart；
Fig. 2 is that the down physical channel of LTE series standards sends position view；
Fig. 3 is detector timing properties b figure of the existing LTE series standards synchronizing signal under different frequency deviations, and wherein Fig. 3 a are that frequency deviation is
The detector timing properties b figure of LTE synchronizing signals during 0Hz, Fig. 3 b are the detector timing properties b figure of LTE synchronizing signals when frequency deviation is 30KHz,
Fig. 3 c are the detector timing properties b figure of LTE synchronizing signals when frequency deviation is 100KHz；
Fig. 4 is the dispensing device structural representation of embodiment 1；
Fig. 5 is the enhanced method for transmitting synchronizing signal flow chart of embodiment 2；
Fig. 6 a-6r are that enhanced synchronizing signal sends position view.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Embodiment 1
The present embodiment introduces a kind of synchronizing signal dispensing device, and the device is applied to the communication system using LTE series standards
In system, as shown in figure 4, the device includes：Generation module and sending module, wherein：
The generation module, for generating enhanced synchronizing signal；
The sending module, for sending the enhanced synchronizing signal to enhanced terminal, wherein, it is described enhanced same
The running time-frequency resource that step signal is used is different from the running time-frequency resource that basic model synchronizing signal is used.
Enhanced synchronizing signal described herein refers to and basic model synchronizing signal (i.e. LTE standard synchronizing signal, including main same
Walk signal and/or auxiliary synchronous signals) the different synchronizing signal of running time-frequency resource." enhanced synchronizing signal " be only for LTE standard
The other title in synchronous signal area, the LTE standard synchronizing signal is alternatively referred to as the first synchronizing signal, and the enhanced synchronizing signal also may be used
Referred to as the second synchronizing signal.
Basic model terminal specifically described herein refers to the terminal for being only capable of decoding basic model synchronizing signal.Enhanced terminal refers to have
Ability decodes the terminal of enhanced synchronizing signal.Enhanced terminal, which can not only decode enhanced synchronizing signal, can also decode basic model
Synchronizing signal.
Enhanced synchronizing signal is used for for enhanced terminal synchronization, and basic model synchronizing signal is used for same for basic model terminal
Step.
Preferably, the generation module is additionally operable to generate basic model synchronizing signal, and the basic model synchronizing signal includes main same
Walk signal and/or auxiliary synchronous signals；The sending module is additionally operable to send the basic model synchronizing signal, the terminal bag to terminal
Include enhanced terminal and/or basic model terminal.
Preferably, the running time-frequency resource that the enhanced synchronizing signal is used is in any one in following position：
The OFDM symbol used positioned at the basic model synchronizing signal；Positioned at adjacent with the basic model synchronizing signal
OFDM symbol；Positioned at first OFDM symbol of a subframe；Positioned at last OFDM symbol of a subframe；Positioned at one
First OFDM symbol of time slot；Positioned at last OFDM symbol of a time slot；Positioned at physical control format indication signal
The OFDM symbol at place；Positioned at the OFDM symbol where Physical HARQ Indicator Channel；Where Physical Downlink Control Channel
OFDM symbol；Positioned at the OFDM symbol where Physical Downlink Shared Channel；When the communication system uses TDD mode, position
In special subframe；When the communication system uses TDD mode, positioned at the previous descending sub frame adjacent with special subframe.
Preferably, the sending module is additionally operable in the OFDM symbol that is used in the basic model synchronizing signal not by the base
Transmission content is sky on the subcarrier that this type synchronizing signal takes.
The device may also include distribute module, and the distribute module is used to not distribute what the basic model synchronizing signal was used
The subcarrier not taken in OFDM symbol by the basic model synchronizing signal；And/or, the distribute module is used to send described increase
Allocation of transmission resources does not give basic model terminal in the subframe of strong type synchronizing signal.
The OFDM symbol that above-mentioned enhanced synchronizing signal is located at is accorded with the OFDM that the basic model synchronizing signal is located at
Number intersymbol relative position be default configuration；Or, the information position relative with the intersymbol of the enhanced synchronizing signal
Corresponding relation is equipped with, the information for the enhanced synchronizing signal that terminal is obtained according to parsing can know the intersymbol with respect to position
Put.
Preferably, the device may also include notification module, and the notification module is used to notify the enhancing by control signaling
Time-frequency location described in type terminal residing for basic model synchronizing signal；And/or, the notification module is used to notify institute by control signaling
State enhanced terminal and receive the basic model synchronizing signal.
If the subframe where the enhanced synchronizing signal is multicast broadcast single frequency network subframe；The then enhanced synchronizing signal
The running time-frequency resource used is located at the other positions in addition to following each position：It is used for transmitting physical control in multicast broadcast single frequency network subframe
It is used for the OFDM symbols that transmitting physical HARQ indicates channel in the OFDM symbol of format indication channel processed, multicast broadcast single frequency network subframe
Number, be used for the OFDM symbol of transmitting physical downlink channel control in multicast broadcast single frequency network subframe.
The enhanced synchronizing signal of above-mentioned transmission cycle in time domain repeats or the cycle is conjugated symmetrical or periodic symmetry.
When sending enhanced synchronizing signal and basic model synchronizing signal simultaneously, the enhanced synchronizing signal is synchronous with basic model
Signal is that conjugation is symmetrical or symmetrical in time domain waveform.Arrangement set used in enhanced synchronizing signal and basic model are same
Arrangement set used in walking signal can be with identical.
Specifically, above-mentioned generation module is to be used to generate enhanced synchronizing signal in the following ways：By permanent mould zero from phase
Close sequence and generate the enhanced synchronizing signal；Or the enhanced synchronizing signal is generated by Golay sequences；Or by m sequences
Enhanced synchronizing signal described in column-generation；Or the enhanced synchronizing signal is generated by Walsh sequences.
Preferably, the enhanced synchronizing signal may include correction parameter, and the correction parameter is used to receive or decode for terminal
The basic model synchronizing signal, the correction parameter includes the one or more of following parameter：Timing estimation, offset estimation, base
Arrangement set used in this type synchronizing signal.
The enhanced synchronizing signal can be additionally used in the mark that current affiliation cell is obtained for enhanced terminal.
Said apparatus can be the either other network side elements in base station.
Embodiment 2
This example demonstrates that the sending and receiving method of synchronizing signal described herein, this method is applied to using LTE series
In the communication system of standard, as shown in figure 5, sending method includes：
Step 110, network side element generates enhanced synchronizing signal；
Step 120, network side element sends the enhanced synchronizing signal to enhanced terminal, wherein, the enhanced synchronization
The running time-frequency resource that signal is used is different from the running time-frequency resource that basic model synchronizing signal is used.
Strengthened by the synchronizing channel to LTE series standards, the power consumption of terminal can be effectively reduced and realized complicated
Degree, reduces cost of implementation.
The running time-frequency resource that enhanced synchronizing signal is used for example may be at any one in following position：Positioned at described
The OFDM symbol that basic model synchronizing signal is used；Positioned at the OFDM symbol adjacent with the basic model synchronizing signal；Positioned at one
First OFDM symbol of subframe；Positioned at last OFDM symbol of a subframe；Positioned at first OFDM of a time slot
Symbol；Positioned at last OFDM symbol of a time slot；OFDM symbol where physical control format indication signal；Position
In the OFDM symbol where Physical HARQ Indicator Channel；Positioned at the OFDM symbol where Physical Downlink Control Channel；Positioned at physics
OFDM symbol where DSCH Downlink Shared Channel；When communication system uses TDD mode, positioned at special subframe；Communication system is adopted
When using TDD mode, positioned at the previous descending sub frame adjacent with special subframe.
Network side element is sent after enhanced synchronizing signal, and enhanced terminal receives the enhanced synchronizing signal.
Network side element can also generate basic model synchronizing signal while enhanced synchronizing signal is generated, and send enhancing
During type synchronizing signal, basic model synchronizing signal can be also sent in the lump, and the object that basic model synchronizing signal is sent includes：Enhanced end
End and/or basic model terminal.
Exemplified by being below network side element by base station, connected applications example 1~16 and Fig. 6 are carried out further to the above method
Explanation.
The flow related generally in the example below is：Base station sends enhanced synchronizing signal to enhanced terminal, enhanced
Terminal receives the enhanced synchronizing signal, wherein, the running time-frequency resource that enhanced synchronizing signal is used, which is different from basic model, synchronously to be believed
The running time-frequency resource that number (i.e. synchronizing signal as defined in LTE series standards) is used.
Using example 1
In this example, the running time-frequency resource that the enhanced synchronizing signal that base station is sent is used is located at basic model synchronizing signal and made
OFDM symbol, such as positioned at the position shown in Fig. 6 a, 6b or 6c, Fig. 6 a, 6b, 6c are only position example, and this is enhanced same
Step signal may be additionally located in the OFDM symbol that basic model synchronizing signal is used except on other subcarriers shown in figure.
Using example 2
In this example, the running time-frequency resource that the enhanced synchronizing signal that base station is sent is used is located at and basic model synchronizing signal
Adjacent OFDM symbol, as shown in fig 6d.
Using example 3
In this example, the running time-frequency resource that the enhanced synchronizing signal that base station is sent is used is located at first of a subframe
Or last OFDM symbol, as shown in Fig. 6 e, 6f.
Using example 4
In this example, the running time-frequency resource that the enhanced synchronizing signal that base station is sent is used is located at first of a time slot
Or last OFDM symbol, as shown in Fig. 6 g, 6h.
Using example 5
In this example, base station sends enhanced synchronizing signal and basic model synchronizing signal, enhanced synchronizing signal simultaneously
From running time-frequency resource that basic model synchronizing signal is used it is located at different OFDM symbols, and base station is used in basic model synchronizing signal
The content sent on the subcarrier not taken in OFDM symbol by the basic model synchronizing signal is sky, i.e., do not send any content.
That is the content in addition to basic model synchronizing signal can not be sent in the OFDM symbol that basic model synchronizing signal is sent, so
The purpose done is that terminal can combine enhanced synchronizing signal and basic model synchronizing signal progress down-going synchronous enhancing.
Basic model terminal receives basic model synchronizing signal, and enhanced terminal at least receives enhanced synchronizing signal, in base station
During notice, basic model synchronizing signal can be also received.
Using example 6
In this example, base station sends enhanced synchronizing signal and basic model synchronizing signal, enhanced synchronizing signal simultaneously
It is located at different OFDM symbols from the running time-frequency resource that basic model synchronizing signal is used, and base station can not be synchronous in the basic model
The subcarrier not taken in the OFDM symbol that signal is used by the basic model synchronizing signal distributes to subordinate terminal, that is,
Say, base station does not distribute the subcarrier not taken in the OFDM symbol that basic model synchronizing signal is used by basic model synchronizing signal, this
The purpose that sample is done is also for progress down-going synchronous enhancing.
Basic model terminal receives basic model synchronizing signal, and enhanced terminal at least receives enhanced synchronizing signal, in base station
During notice, basic model synchronizing signal can be also received.
Using example 7
In this example, base station sends enhanced synchronizing signal and basic model synchronizing signal, enhanced synchronizing signal simultaneously
It is located at different OFDM symbols, enhanced synchronizing signal letter synchronous with basic model from the running time-frequency resource that basic model synchronizing signal is used
Number intersymbol relative position be default configuration, for example differ N number of OFDM symbol, N is natural number, solidifies N in a standard
Numerical value after, terminal and base station are realized according to standard.
Using example 8
In this example, base station sends enhanced synchronizing signal and basic model synchronizing signal, enhanced synchronizing signal simultaneously
It is located at different OFDM symbols from running time-frequency resource that basic model synchronizing signal is used, and the enhanced synchronizing signal sent
Information has corresponding relation with the intersymbol relative position.Enhanced terminal receives enhanced synchronizing signal, enhanced synchronous letter
Number it is enhanced synchronous by decoding by the enhanced terminal with the intersymbol relative position that basic model synchronizing signal is located at
Signal is obtained, and such as enhanced terminal decoding obtains the sequence that enhanced synchronizing signal is used, then according to the sequence and relative position
The configuration relation (being, for example, an inquiry table) put obtains the transmission position of basic model synchronizing signal.
Using example 9
In this example, base station sends enhanced synchronizing signal and basic model synchronizing signal, enhanced synchronizing signal simultaneously
It is located at different OFDM symbols from the running time-frequency resource that basic model synchronizing signal is used.Position where basic model synchronizing signal is by base
Stand and notify that, to enhanced terminal, enhanced terminal receives enhanced synchronizing signal and basic model synchronizing signal by control signaling.
Using example 10
In this example, base station send enhanced synchronizing signal be located at Physical Control Format Indicator Channel (PCFICH),
Or where Physical HARQ Indicator Channel (PHICH) or Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel
OFDM symbol, respectively as shown in Fig. 6 i, 6j, 6k, 6l.
Using example 11
In this example, allocation of transmission resources does not give basic model terminal in the subframe for sending enhanced synchronizing signal for base station
(terminal for supporting LTE series standards), it is preferable that the transfer resource is used for transmission services data.
Using example 12
In this example, the subframe where enhanced synchronizing signal be multicast broadcast single frequency network subframe, can by base station or on
Layer network element notifies terminal, and the subframe where the enhanced synchronizing signal is multicast broadcast single frequency network (MBSFN) subframe.Now, if
Put the running time-frequency resource that enhanced synchronizing signal uses and can not be located in multicast broadcast single frequency network subframe and be used for transmitting physical and control lattice
Formula indicates the OFDM symbols of channel (PCFICH), Physical HARQ Indicator Channel (PHICH) and Physical Downlink Control Channel (PDCCH)
Number, the time-frequency location of enhanced synchronizing signal is as shown in Fig. 6 m, 6n, 6o, 6p.
Using example 13
In this example, when current communication networks are TDD mode, the enhanced synchronizing signal that base station is sent is also
Special subframe can be located at, as shown in Fig. 6 q.
Using example 14
In this example, when current communication networks are TDD mode, the enhanced synchronizing signal that base station is sent is also
The previous descending sub frame adjacent with special subframe can be located at, as shown in Fig. 6 r.
Using example 15
In this example, enhanced terminal receives enhanced synchronizing signal and basic model synchronizing signal.Enhanced terminal can
Basic model synchronizing signal is received or decodes according to the correction parameter of enhanced synchronizing signal acquisition is decoded.Correction parameter include with
One or more in lower parameter：The arrangement set that timing estimation, offset estimation, the standard sync signal are used.
Using example 16
In this example, base station can notify enhanced terminal to receive basic model synchronizing signal by control signaling.It is enhanced
Terminal receives basic model synchronizing signal, and enhanced terminal receives basic model synchronizing signal, is obtained according to enhanced synchronizing signal is decoded
Correction parameter decode basic model synchronizing signal.
Preferably, in above-mentioned application example 1~16, the basic model synchronizing signal includes master sync signal, and/or auxiliary same
Walk signal.
Preferably, in above-mentioned application example 1~16, the enhanced synchronizing signal and the basic model synchronizing signal when
It is that conjugation is symmetrical or symmetrical on domain waveform.
Preferably, in above-mentioned application example 1~16, the arrangement set used in the enhanced synchronizing signal and the base
The arrangement set that this type synchronizing signal is used is identical.
Preferably, in above-mentioned application example 1~16, the enhanced synchronizing signal is to repeat or week in the cycle in time domain
Phase conjugation is symmetrical or periodic symmetry.
Preferably, in above-mentioned application example 1~16, the enhanced synchronizing signal be by permanent mould zero auto-correlation sequence or
What Golay sequences or m-sequence or Walsh sequences were generated.
Preferably, in above-mentioned application example 1~16, the corresponding relation of enhanced synchronizing signal and cell ID can be set,
Terminal obtains the subordinate cell ID (Softcell of the base station by receiving the enhanced synchronizing signal of base station transmission
ID), for example set the sequence that enhanced synchronizing signal is used identical with subordinate cell ID, then decoding terminals obtain enhanced same
The serial ID that uses of step signal is 121, then it is 121 to know subordinate cell ID, the enhanced synchronizing signal and cell ID
Corresponding relation can also meet certain functional relation, and such as terminal can be used by decoding obtained enhanced synchronizing signal
Serial ID calculates the subordinate cell ID for obtaining base station.The base station is identified with the shared main plot of its main control base station, preferably
Ground, the coverage of main control base station is bigger than the base station, need not when terminal is moved between the base station and active base station
Carry out switching flow as defined in LTE series standards.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also use one or more integrated circuits to realize.Accordingly
Each module/unit in ground, above-described embodiment can be realized in the form of hardware, it would however also be possible to employ the shape of software function module
Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation, but these corresponding changes and change ought can be made according to the present invention by knowing those skilled in the art
Shape should all belong to the protection domain of appended claims of the invention.
Claims (29)
1. a kind of method for transmitting synchronizing signal, applied to the communication system using Long Term Evolution LTE series standards, methods described bag
Include：
Network side element generates enhanced synchronizing signal, and the subframe where the enhanced synchronizing signal is multicast broadcast single frequency network
Subframe；
Network side element sends the enhanced synchronizing signal to enhanced terminal, wherein, the enhanced synchronizing signal is used
Running time-frequency resource be different from the running time-frequency resource that uses of basic model synchronizing signal, the running time-frequency resource that the enhanced synchronizing signal is used
Positioned at the other positions in addition to following each position：It is used for transmitting physical control format in multicast broadcast single frequency network subframe and indicates channel
OFDM symbol, be used for transmitting physical HARQ in multicast broadcast single frequency network subframe and indicate the OFDM symbol of channel, multicast and broadcast list
It is used for the OFDM symbol of transmitting physical downlink channel control in frequency net frame.
2. the method as described in claim 1, it is characterised in that：
The running time-frequency resource that the enhanced synchronizing signal is used is in any one in following position：
The OFDM symbol used positioned at the basic model synchronizing signal；
Positioned at the OFDM symbol adjacent with the basic model synchronizing signal；
Positioned at first OFDM symbol of a subframe；
Positioned at last OFDM symbol of a subframe；
Positioned at first OFDM symbol of a time slot；
Positioned at last OFDM symbol of a time slot；
OFDM symbol where physical control format indication signal；
Positioned at the OFDM symbol where Physical HARQ Indicator Channel；
Positioned at the OFDM symbol where Physical Downlink Control Channel；
Positioned at the OFDM symbol where Physical Downlink Shared Channel；
When the communication system uses TDD mode, positioned at special subframe；
When the communication system uses TDD mode, positioned at the previous descending sub frame adjacent with special subframe.
3. method as claimed in claim 1 or 2, it is characterised in that：
Methods described also includes：The network side element generates basic model synchronizing signal, and it is synchronous to send the basic model to terminal
Signal, the terminal includes enhanced terminal and/or basic model terminal.
4. method as claimed in claim 3, it is characterised in that：
Send basic model synchronizing signal when, the network side element in the OFDM symbol that the basic model synchronizing signal is used not
Transmission content is sky on the subcarrier taken by the basic model synchronizing signal.
5. method as claimed in claim 3, it is characterised in that：
Methods described also includes：The network side element do not distribute in the OFDM symbol that the basic model synchronizing signal is used not by
The subcarrier that the basic model synchronizing signal takes.
6. method as claimed in claim 3, it is characterised in that：
The OFDM symbol that the enhanced synchronizing signal sent is located at is located at the basic model synchronizing signal sent
OFDM symbol intersymbol relative position be default configuration；Or
The information of the enhanced synchronizing signal sent has corresponding relation with the intersymbol relative position.
7. method as claimed in claim 3, it is characterised in that：
Methods described also includes：The network side element notifies basic model described in the enhanced terminal synchronous by control signaling
Time-frequency location residing for signal, and/or, the network side element notifies the enhanced terminal is received described by control signaling
Basic model synchronizing signal.
8. method as claimed in claim 1 or 2, it is characterised in that：
Methods described also includes：The network side element does not distribute transmission money in the subframe for sending the enhanced synchronizing signal
Basic model terminal is given in source.
9. method as claimed in claim 3, it is characterised in that：
The enhanced synchronizing signal includes correction parameter, and the correction parameter is same for being received for terminal or decoding the basic model
Walk signal.
10. method as claimed in claim 9, it is characterised in that：
The correction parameter includes the one or more of following parameter：Timing estimation, offset estimation, basic model synchronizing signal are made
Arrangement set.
11. method as claimed in claim 3, it is characterised in that：
The basic model synchronizing signal includes master sync signal and/or auxiliary synchronous signals.
12. method as claimed in claim 3, it is characterised in that：
The enhanced synchronizing signal and the basic model synchronizing signal of transmission that the network side element is sent are in time domain ripple
It is that conjugation is symmetrical or symmetrical in shape.
13. method as claimed in claim 3, it is characterised in that：
Arrangement set used in the enhanced synchronizing signal that the network side element is sent and the basic model sent
Arrangement set is identical used in synchronizing signal.
14. method as claimed in claim 1 or 2, it is characterised in that：
The enhanced synchronizing signal that the network side element is sent cycle in time domain repeats or the cycle is conjugated the symmetrical or cycle
Symmetrically.
15. method as claimed in claim 1 or 2, it is characterised in that：
The network side element generates enhanced synchronizing signal, including：It is described enhanced same by the generation of permanent mould zero auto-correlation sequence
Walk signal；Or the enhanced synchronizing signal is generated by Golay sequences；Or the enhanced synchronous letter is generated by m-sequence
Number；Or the enhanced synchronizing signal is generated by Walsh sequences.
16. the method as described in claim 1, it is characterised in that：
The enhanced synchronizing signal is used for the mark that current affiliation cell is obtained for enhanced terminal.
17. a kind of synchronizing signal dispensing device, it is adaptable in the communication system for using Long Term Evolution LTE series standards, the dress
Put including：Generation module and sending module, wherein：
The generation module, for generating enhanced synchronizing signal, the subframe where the enhanced synchronizing signal is wide for multicast
Broadcast Single frequency network subframe；
The sending module, for sending the enhanced synchronizing signal to enhanced terminal, wherein, the enhanced synchronous letter
Number running time-frequency resource used is different from the running time-frequency resource that basic model synchronizing signal is used, the enhanced synchronizing signal use when
Frequency resource be located at divided by lower each position outside other positions：Refer in multicast broadcast single frequency network subframe for transmitting physical control format
Show that being used for transmitting physical HARQ in the OFDM symbol of channel, multicast broadcast single frequency network subframe indicates the OFDM symbol of channel, multicast
It is used for the OFDM symbol of transmitting physical downlink channel control in broadcast single frequency network subframe.
18. device as claimed in claim 17, it is characterised in that：
The running time-frequency resource that the enhanced synchronizing signal is used is in any one in following position：
The OFDM symbol used positioned at the basic model synchronizing signal；
Positioned at the OFDM symbol adjacent with the basic model synchronizing signal；
Positioned at first OFDM symbol of a subframe；
Positioned at last OFDM symbol of a subframe；
Positioned at first OFDM symbol of a time slot；
Positioned at last OFDM symbol of a time slot；
OFDM symbol where physical control format indication signal；
Positioned at the OFDM symbol where Physical HARQ Indicator Channel；
Positioned at the OFDM symbol where Physical Downlink Control Channel；
Positioned at the OFDM symbol where Physical Downlink Shared Channel；
When the communication system uses TDD mode, positioned at special subframe；
When the communication system uses TDD mode, positioned at the previous descending sub frame adjacent with special subframe.
19. the device as described in claim 17 or 18, it is characterised in that：
The generation module be additionally operable to generate basic model synchronizing signal, the basic model synchronizing signal include master sync signal and/
Or auxiliary synchronous signals；
The sending module is additionally operable to send the basic model synchronizing signal to terminal, the terminal include enhanced terminal and/
Or basic model terminal.
20. device as claimed in claim 19, it is characterised in that：
The sending module is additionally operable to not synchronous by the basic model in the OFDM symbol that is used in the basic model synchronizing signal
Transmission content is sky on the subcarrier that signal takes.
21. device as claimed in claim 19, it is characterised in that：
Described device also includes distribute module, and the distribute module is used to not distribute the OFDM symbols that the basic model synchronizing signal is used
The subcarrier not taken on number by the basic model synchronizing signal；And/or, the distribute module is used to send described enhanced same
Allocation of transmission resources does not give basic model terminal in the subframe of step signal.
22. device as claimed in claim 19, it is characterised in that：
The OFDM symbol that the OFDM symbol that the enhanced synchronizing signal is located at is located at the basic model synchronizing signal
Intersymbol relative position is default configuration；Or
The information of the enhanced synchronizing signal has corresponding relation with the intersymbol relative position.
23. device as claimed in claim 19, it is characterised in that：
Described device also includes notification module, and the notification module is used to notify base described in the enhanced terminal by control signaling
Time-frequency location residing for this type synchronizing signal；And/or, the notification module is used to notify the enhanced terminal by control signaling
Receive the basic model synchronizing signal.
24. device as claimed in claim 19, it is characterised in that：
The enhanced synchronizing signal and the basic model synchronizing signal of transmission that the sending module is sent are in time domain waveform
On be that conjugation is symmetrical or symmetrical.
25. device as claimed in claim 19, it is characterised in that：
Arrangement set used in the enhanced synchronizing signal that the sending module is sent and the basic model sent are same
Walk arrangement set used in signal identical.
26. the device as described in claim 17 or 18, it is characterised in that：
The enhanced synchronizing signal that the sending module is sent cycle in time domain repeats or the cycle is conjugated the symmetrical or cycle pair
Claim.
27. the device as described in claim 17 or 18, it is characterised in that：
The generation module is to be used to generate enhanced synchronizing signal in the following ways：Institute is generated by permanent mould zero auto-correlation sequence
State enhanced synchronizing signal；Or the enhanced synchronizing signal is generated by Golay sequences；Or the increasing is generated by m-sequence
Strong type synchronizing signal；Or the enhanced synchronizing signal is generated by Walsh sequences.
28. device as claimed in claim 19, it is characterised in that：
The enhanced synchronizing signal includes correction parameter, and the correction parameter is same for being received for terminal or decoding the basic model
Signal is walked, the correction parameter includes the one or more of following parameter：Timing estimation, offset estimation, basic model synchronizing signal
Used arrangement set.
29. device as claimed in claim 17, it is characterised in that：
The enhanced synchronizing signal is used for the mark that current affiliation cell is obtained for enhanced terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210132020.5A CN103379079B (en) | 2012-04-28 | 2012-04-28 | The sending method and device of a kind of synchronizing signal |
| PCT/CN2012/077136 WO2013159437A1 (en) | 2012-04-28 | 2012-06-19 | Sending method and device for synchronization signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210132020.5A CN103379079B (en) | 2012-04-28 | 2012-04-28 | The sending method and device of a kind of synchronizing signal |
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| Publication Number | Publication Date |
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| CN103379079A CN103379079A (en) | 2013-10-30 |
| CN103379079B true CN103379079B (en) | 2017-11-07 |
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| CN201210132020.5A Expired - Fee Related CN103379079B (en) | 2012-04-28 | 2012-04-28 | The sending method and device of a kind of synchronizing signal |
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| Country | Link |
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| CN (1) | CN103379079B (en) |
| WO (1) | WO2013159437A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3927070A1 (en) | 2013-01-18 | 2021-12-22 | Huawei Technologies Co., Ltd. | Transmitting method and apparatus for common control channel |
| WO2015109513A1 (en) | 2014-01-24 | 2015-07-30 | 华为技术有限公司 | Information transmission method, user equipment and base station |
| CN111343694B (en) * | 2014-01-24 | 2021-12-10 | 华为技术有限公司 | Information transmission method, user equipment and base station |
| CN104955106B (en) * | 2014-03-31 | 2019-01-08 | 华为技术有限公司 | resource allocation, data processing method and device |
| CN105207755B (en) * | 2014-06-09 | 2019-10-11 | 中国移动通信集团公司 | A kind of air interface synchronization method, base station and system |
| EP3308483B1 (en) * | 2015-06-15 | 2020-02-05 | Telefonaktiebolaget LM Ericsson (publ) | Variable synchronization block format |
| CN107623935B (en) * | 2016-07-15 | 2020-02-04 | 电信科学技术研究院 | Access signal sending and receiving method and related equipment |
| CN108023707B (en) * | 2016-11-03 | 2023-10-24 | 华为技术有限公司 | Method and device for transmitting downlink control signals |
| US10448346B2 (en) * | 2016-11-11 | 2019-10-15 | Qualcomm Incorporated | Synchronization signal design |
| EP3833095B1 (en) | 2017-05-04 | 2023-07-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for transmitting signal, network device and terminal device |
| CN108811071B (en) * | 2017-05-04 | 2023-09-22 | 华为技术有限公司 | Method and device for transmitting signals |
| CN109104227A (en) | 2017-06-20 | 2018-12-28 | 索尼公司 | For the electronic equipment of wireless communication system, method and storage medium |
| CN109392130B (en) * | 2017-08-11 | 2022-07-19 | 大唐移动通信设备有限公司 | Method for determining time domain position of physical channel, user terminal and network side equipment |
| WO2024138556A1 (en) * | 2022-12-29 | 2024-07-04 | 华为技术有限公司 | Communication method and apparatus |
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| CN103379079A (en) | 2013-10-30 |
| WO2013159437A1 (en) | 2013-10-31 |
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