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CN109818896A - Synchronization signal transmission method, device and communication system - Google Patents

Synchronization signal transmission method, device and communication system Download PDF

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Publication number
CN109818896A
CN109818896A CN201711155985.5A CN201711155985A CN109818896A CN 109818896 A CN109818896 A CN 109818896A CN 201711155985 A CN201711155985 A CN 201711155985A CN 109818896 A CN109818896 A CN 109818896A
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China
Prior art keywords
ofdm symbol
domain
synchronization signal
real
symbol
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Chinese (zh)
Inventor
杨凡
王昕�
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Fujitsu Ltd
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Fujitsu Ltd
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Priority to CN201711155985.5A priority Critical patent/CN109818896A/en
Publication of CN109818896A publication Critical patent/CN109818896A/en
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Abstract

The embodiment of the present invention provides the transmission method, device and communication system of a kind of synchronization signal.The described method includes: sending primary synchronization signal using the first OFDM symbol;And secondary synchronization signal is sent using the second OFDM symbol;Wherein first OFDM symbol and second OFDM symbol have different subcarrier spacings on frequency domain.Primary synchronization signal and secondary synchronization signal are transmitted by the OFDM symbol with different wave respectively as a result, can either improve system performance can optimize spectrum efficiency again.

Description

Transmission method, device and the communication system of synchronization signal
Technical field
The present embodiments relate to field of communication technology, in particular to a kind of transmission method of synchronization signal, device and logical Letter system.
Background technique
Synchronizing channel is the physical layer channel for cell searching, and cell searching is the basic of all cordless communication networks One of function.By cell searching, the time of user equipment (UE, User Equipment) available cell goes forward side by side line frequency It is synchronous, while detecting the mark (ID) of cell.Cell search process is broadly divided into two steps: primary synchronization signal (PSS, Primary Synchronization Signal) synchronous detection and secondary synchronization signal (SSS, Secondary Synchronization Signal) synchronous detection.
Third generation partner program (3GPP, 3rdGeneration Partnership Project) long term evolution In (LTE, Long Term Evolution), PSS and SSS use pseudo-random sequence, and are carried on respectively based on identical son Orthogonal frequency division multiplexing (OFDM, the Orthogonal Frequency at carrier wave interval (SCS, Sub-Carrier Spacing) Division Multiplex) on symbol.
On the other hand, the communication in the 5th generation (5G) and future can use higher frequency band (such as 6GHz or more), and And the multinomial technology of such as beam shaping (Beamforming) is used to performance and the overlay area of raising system.In order to support There is new challenge in these technologies, cell searching.
For example, the user equipment needs in 5G are capable of handling bigger load in initial access network equipment compared with LTE Wave frequency partially (CFO, Carrier Frequency Offset), and needs to pass through under multi-beam (Multi-beam) scene The detection of PSS and SSS indicates more information, such as wave beam mark (Beam ID) and time index (Time Index).
It should be noted that the above description of the technical background be intended merely to it is convenient to technical solution of the present invention carry out it is clear, Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes of the invention Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
Inventor's discovery: the sequence of real number field is (such as based on binary phase shift keying (BPSK, Binary Phase Shift Keying) M sequence) sequence (such as Zadoff-Chu sequence) relative to complex field, for time domain and frequency domain Offset has stronger robustness.Therefore, for 5G and new wireless (NR, New Radio) system, it can choose real number field Sequence is to be used for PSS and/or SSS, Lai Tigao system performance.
But if still transmitting the PSS and SSS of the sequence based on real number field using current OFDM symbol, signal is only It needs to keep orthogonality in real number field, spectrum efficiency does not advanced optimize so as to cause the wasting of resources.How to be preferably It is balanced between system performance and spectrum efficiency, is the project for needing further to study.
The embodiment of the present invention provides the transmission method, device and communication system of a kind of synchronization signal.By using in frequency domain The upper OFDM symbol with different subcarrier spacings (i.e. with different wave) transmits PSS and SSS respectively, it is expected that can both mention High system performance can optimize spectrum efficiency again.
First aspect according to an embodiment of the present invention provides a kind of transmitting device of synchronization signal, comprising:
Primary synchronization signal transmission unit sends primary synchronization signal using the first OFDM symbol;And
Secondary synchronization signal transmission unit sends secondary synchronization signal using the second OFDM symbol;It is wherein described First OFDM symbol and second OFDM symbol have different subcarrier spacings on frequency domain.
The second aspect according to an embodiment of the present invention provides a kind of transmission method of synchronization signal, comprising:
Primary synchronization signal is sent using the first OFDM symbol;And
Secondary synchronization signal is sent using the second OFDM symbol;Wherein first OFDM symbol and Second OFDM symbol has different subcarrier spacings on frequency domain.
In terms of third according to an embodiment of the present invention, a kind of communication system is provided, comprising:
Sending device comprising the transmitting device of synchronization signal described in first aspect as above;
Receiving device, the primary synchronization signal and/or secondary synchronization signal send to the sending device detect.
The beneficial effect of the embodiment of the present invention is: by using on frequency domain there is different sub-carrier interval (to have Different wave) OFDM symbol transmit PSS and SSS respectively, can either improve system performance can optimize spectrum efficiency again, can be with It is balanced preferably between system performance and spectrum efficiency.
Referring to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies original of the invention Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power In the range of the spirit and terms that benefit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
The embodiment of the present invention elements and features described in one drawing or one embodiment can with one or Elements and features shown in more other attached drawings or embodiment combine.In addition, in the accompanying drawings, similar label indicates Corresponding component in several attached drawings, and may be used to indicate corresponding component used in more than one embodiment.
Fig. 1 is the schematic diagram of the communication system of the embodiment of the present invention;
Fig. 2 is the schematic diagram of the transmission method of the synchronization signal of the embodiment of the present invention;
Fig. 3 is the exemplary diagram of the synchronizing channel with hybrid waveform of the embodiment of the present invention;
Fig. 4 is the exemplary diagram of the r-OFDM symbol of the embodiment of the present invention;
Fig. 5 is another schematic diagram of the transmission method of the synchronization signal of the embodiment of the present invention;
Fig. 6 is the schematic diagram of the transmitting device of the synchronization signal of the embodiment of the present invention;
Fig. 7 is the schematic diagram of the network equipment of the embodiment of the present invention;
Fig. 8 is the schematic diagram of the user equipment of the embodiment of the present invention.
Specific embodiment
Referring to attached drawing, by following specification, aforementioned and other feature of the invention be will be apparent.In specification In attached drawing, only certain exemplary embodiments of this invention is specifically disclosed, which show the portions that can wherein use principle of the invention Divide embodiment, it will thus be appreciated that the present invention is not limited to described embodiments, on the contrary, the present invention includes falling into appended power Whole modifications, modification and equivalent in the range of benefit requirement.
In embodiments of the present invention, term " first ", " second " etc. are used to distinguish different elements from appellation, but It is not offered as space arrangement or the time sequencing etc. of these elements, these elements should not be limited by these terms.Term " and/ Or " include the associated term listed one kind or any one of multiple and all combinations.Term "comprising", " comprising ", " having " etc. refers to the presence of stated feature, element, element or component, but presence or addition one or more is not precluded Other features, element, element or component.
In embodiments of the present invention, singular " one ", "the" etc. include plural form, should be broadly interpreted as "an" Or " one kind " and be not defined as "one" meaning;Furthermore term " described " be interpreted as both include singular and also including Plural form, unless the context clearly indicates otherwise.Furthermore term " according to " is interpreted as " based in part on ... ", term " being based on " is interpreted as " being at least partially based on ... ", unless the context clearly indicates otherwise.
In embodiments of the present invention, term " communication network " or " cordless communication network ", which can refer to, meets following any communication The network of standard, such as long term evolution (LTE-A, the LTE- of long term evolution (LTE, Long Term Evolution), enhancing Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), high speed Message accesses (HSPA, High-Speed Packet Access) etc..
Also, the communication in communication system between equipment can be carried out according to the communication protocol of any stage, such as can be with Including but not limited to following communication protocol: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and the 5G in future, New wireless (NR, New Radio) etc. and/or other are currently known or the following communication protocol that will be developed.
In embodiments of the present invention, term " network equipment " for example refers to terminal device access communication network in communication system Network simultaneously provides the equipment of service for the terminal device.The network equipment can include but is not limited to following equipment: base station (BS, Base Station), access point (AP, Access Point), transmitting and receiving point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, wireless Network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller) etc..
Wherein, base station can include but is not limited to: node B (NodeB or NB), evolution node B (eNodeB or eNB) and Furthermore base station 5G (gNB), etc. may also include distal end without the end of a thread (RRH, Remote Radio Head), remote radio units (RRU, Remote Radio Unit), relaying (relay) or low power nodes (such as femto, pico etc.).And art Language " base station " may include their some or all of functions, and each base station can provide communication to specific geographic area and cover Lid.Term " cell " also refers to base station and/or its overlay area, this depends on the context using the term.
In embodiments of the present invention, term " user equipment " (UE, User Equipment) or " terminal device " (TE, Terminal Equipment) for example refer to the equipment for passing through network equipment access to communication networks and receiving network service.User What equipment can be fixed or move, and it is referred to as mobile station (MS, Mobile Station), terminal, subscriber board (SS, Subscriber Station), access terminal (AT, Access Terminal) are stood, etc..
Wherein, user equipment can include but is not limited to following equipment: cellular phone (Cellular Phone), a number Word assistant (PDA, Personal Digital Assistant), radio modem, wireless telecom equipment, handheld device, Equipment for machine type communication, laptop computer, wireless phone, smart phone, smartwatch, digital camera, etc..
For another example user equipment can also be progress under the scenes such as Internet of Things (IoT, Internet of Things) The machine or device of monitoring or measurement, such as can include but is not limited to: machine type communication (MTC, Machine Type Communication) terminal, vehicle communication terminal, device-to-device (D2D, Device to Device) terminal, machine to machine Device (M2M, Machine to Machine) terminal, etc..
It is illustrated below by way of scene of the example to the embodiment of the present invention, however, the present invention is not limited thereto.
Fig. 1 is the schematic diagram of the communication system of the embodiment of the present invention, is diagrammatically illustrated with user equipment and the network equipment For the case where, as shown in Figure 1, communication system 100 may include the network equipment 101 and user equipment 102.For the sake of simplicity, Fig. 1 is only illustrated by taking a user equipment and a network equipment as an example, but the embodiment of the present invention is without being limited thereto.
In embodiments of the present invention, existing business or not can be carried out between the network equipment 101 and user equipment 102 Carry out enforceable business.For example, these business can include but is not limited to: mobile broadband (eMBB, the enhanced of enhancing Mobile Broadband), large-scale machines type communication (mMTC, massive Machine Type Communication) (URLLC, Ultra-Reliable and Low-Latency Communication), etc. is communicated with highly reliable low time delay.
In the present embodiment, the transmission of PSS and/or SSS can be carried out between sending device and receiving device.Wherein, it sends out Equipment is sent to can be the network equipment 101 and receiving device is that the user equipment 102 or sending device can be one User equipment 102 and receiving device are another user equipment 102;The embodiment of the present invention is without being limited thereto, can be according to practical need Determine specific scene.
Embodiment 1
The embodiment of the present invention is illustrated from sending device side, and wherein the sending device can be the network equipment, can also To be user equipment, the present invention is not limited this.
Fig. 2 is the schematic diagram of the transmission method of the synchronization signal of the embodiment of the present invention, is illustrated from sending device side. As shown in Figure 2, which comprises
Step 201, PSS is sent using the first OFDM symbol;And
Step 202, SSS is sent using the second OFDM symbol;Wherein first OFDM symbol and the 2nd OFDM symbol There is number on frequency domain different subcarrier spacings.
In the present embodiment, first OFDM symbol can be the OFDM symbol of complex field, for example, advise in LTE system Fixed OFDM symbol;Second OFDM symbol is the OFDM symbol of real number field.The subcarrier of the OFDM symbol of the real number field Interval is the half of the subcarrier spacing of the OFDM symbol of the complex field.
For example, being passed when the pseudo-random sequence that PSS and/or SSS are used is real number (such as M sequence, Gold sequence etc.) The subcarrier spacing of system OFDM (i.e. the OFDM of complex field) can halve spectrum efficiency is allowed to double, at the same keep subcarrier it Between it is orthogonal in real number field.This new waveform can for example be referred to as semi-orthogonal OFDM (SOFDM, Semi-OFDM) or real number The OFDM (r-OFDM, real-domain OFDM) in domain.
It is worth noting that, the first OFDM symbol and the second OFDM symbol in the embodiment of the present invention are without being limited thereto, may be used also To be other symbols with different sub-carrier interval, or other symbols with different wave;As long as using tool There is the symbol of hybrid waveform to send PSS and SSS respectively, can be adapted for the present invention.
It below will be by taking the OFDM (being denoted as r-OFDM below) of the OFDM of complex field (being denoted as OFDM below) and real number field as an example It is illustrated.
Fig. 3 is synchronizing channel (SCH, the Synchronization with hybrid waveform of the embodiment of the present invention Channel exemplary diagram) is transmitted as shown in figure 3, r-OFDM symbol can be used in SSS, and OFDM symbol can be used in PSS It number is transmitted;R-OFDM and OFDM has different subcarrier spacings on frequency domain.
In the present embodiment, a sequence of real number field, such as M sequence or Gold sequence can be used in SSS;Or The sequence that multiple combined sequences of real number field are got up can be used;Or real number field by precoding also can be used One sequence (such as M sequence), wherein the matrix of the precoding can be discrete cosine transformation matrix or discrete fourier Transformation matrix.
For PSS, the sequence (such as M sequence) of real number field can be used, also can be used complex field sequence (such as Zadoff-Chu sequence);That is PSS can continue to use the regulation in LTE system.In addition, the particular content about the above various sequences, The relevant technologies can be referred to, details are not described herein.
By taking OFDM and r-OFDM as an example, the OFDM symbol of the complex field can be indicated are as follows:
The OFDM symbol of the real number field can indicate are as follows:
Wherein, T indicates the duration of symbol, and K indicates the number of subcarrier, and k indicates the serial number of subcarrier, akIndicate institute State the load on k-th of subcarrier of the OFDM symbol of complex field, bkIndicate k-th of son of the OFDM symbol of the real number field Load on carrier wave.
Relative to traditional OFDM, subcarrier spacing can halve r-OFDM as a result, so that spectrum efficiency mentions It doubles, while keeping orthogonal in real number field between subcarrier.In addition, SSS is using the sequence of real number field and using r-OFDM Symbol transmission, can either improve system performance can optimize spectrum efficiency again;And PSS still uses sequence and the use of complex field OFDM symbol transmission, can reduce system design bring influences and keeps compatibility.
In the present embodiment, the OFDM symbol of the real number field can also carry the data-signal for data transmission; The data-signal can be the modulation symbol of complex field.
For example, r-OFDM symbol other than SSS, is gone back on frequency domain when system bandwidth is greater than the bandwidth of synchronizing channel It may be useful in the complex signal of data transmission, such as quadrature amplitude modulation (QAM, Quadrature Amplitude Modulation) symbol;However, the present invention is not limited thereto.
In the present embodiment, the real part of the modulation symbol of the complex field and imaginary part can be separately placed In the different sub-carrier of the OFDM symbol of the real number field.
For example, in order to avoid the interference between r-OFDM subcarrier, the real and imaginary parts of qam symbol be individually placed to odd number and On even bit subcarrier.That is, the real part of qam symbol is placed on the odd bits subcarrier of r-OFDM symbol, the QAM The imaginary part of symbol is placed on the even seat carrier wave of the r-OFDM symbol.
Alternatively, in order to avoid the interference between r-OFDM subcarrier, the real and imaginary parts of qam symbol be individually placed to even number and On odd bits subcarrier.That is, the real part of qam symbol is placed on the even bit subcarrier of r-OFDM symbol, the QAM The imaginary part of symbol is placed on the odd seat carrier wave of the r-OFDM symbol.
Fig. 4 is the exemplary diagram of the r-OFDM symbol of the embodiment of the present invention, illustrates the r-OFDM symbol in frequency domain On situation.As shown in figure 4, r-OFDM symbol can carry SSS, the data letter for data transmission can be additionally carried Number (as shown in the data channel in Fig. 4).
As shown in figure 4, the real part of data-signal (such as qam symbol) and imaginary part can be separately placed r- In the different sub-carrier of OFDM symbol, such as it is staggeredly placed on odd bits subcarrier and even bit subcarrier;It is possible thereby to keep away Exempt from or reduce the interference between r-OFDM subcarrier.
Fig. 5 is another schematic diagram of the transmission method of the synchronization signal of the embodiment of the present invention, is set from sending device and reception Standby two sides are illustrated.As shown in Figure 5, which comprises
Step 501, sending device sends PSS using the first OFDM symbol;And
Step 502, sending device sends SSS using the second OFDM symbol;Wherein first OFDM symbol and described Two OFDM symbols have different subcarrier spacings on frequency domain.
Step 503, receiving device carries out PSS detection and/or SSS detection.
About PSS and SSS particular content and how PSS/SSS is detected, can refer to the relevant technologies, herein It repeats no more.
It is worth noting that, figure 5 above only schematically illustrates the embodiment of the present invention, but the present invention is not limited to This.Such as the sequence that executes between each step can be suitably adjusted, can additionally increase other some steps or Reduce certain steps therein.Those skilled in the art can carry out suitably modification according to above content, be not limited solely to The record of above-mentioned attached drawing 5.
As can be seen from the above embodiments, by using on frequency domain with different sub-carrier interval (i.e. with different wave) OFDM symbol transmits PSS and SSS respectively, and can either improve system performance can optimize spectrum efficiency again, can preferably be It is balanced between system performance and spectrum efficiency.
Embodiment 2
The embodiment of the present invention provides a kind of transmitting device of synchronization signal.The device for example can be the network equipment, can also To be arranged in some or the certain components or component of the network equipment;Or it is also possible to user equipment, it is also possible to configure In some or the certain components or component of user equipment.The content same as Example 1 of the present embodiment 2 repeats no more.
Fig. 6 is the schematic diagram of the transmitting device of the synchronization signal of the embodiment of the present invention, as shown in fig. 6, the biography of synchronization signal Defeated device 600 includes:
Primary synchronization signal transmission unit 601 sends PSS using the first OFDM symbol;And
Secondary synchronization signal transmission unit 602 sends SSS using the second OFDM symbol;Wherein first OFDM symbol There is different subcarrier spacings on frequency domain with second OFDM symbol.
In the present embodiment, first OFDM symbol can be the OFDM symbol of complex field, second OFDM symbol It can be the OFDM symbol of real number field;The subcarrier spacing of the OFDM symbol of the real number field can be the OFDM of the complex field The half of the subcarrier spacing of symbol.
In the present embodiment, the sequence of real number field can be used in the SSS;Or multiple combined sequences using real number field The sequence got up;Or the sequence using the real number field Jing Guo precoding, wherein the matrix of the precoding is discrete cosine change Change matrix or Discrete Fourier transform.
For example, the OFDM symbol of the complex field can indicate are as follows:
The OFDM symbol of the real number field can indicate are as follows:
Wherein, T indicates the duration of symbol, and K indicates the number of subcarrier, and k indicates the serial number of subcarrier, akIndicate institute State the load on k-th of subcarrier of the OFDM symbol of complex field, bkIndicate that k-th of son of the OFDM symbol of the real number field carries Load on wave.
In the present embodiment, the OFDM symbol of the real number field can also carry the data-signal for data transmission.Its In, the data-signal can be the modulation symbol of complex field;The real part of the modulation symbol of the complex field and imaginary part Divide in the different sub-carrier for the OFDM symbol that can be separately placed the real number field.
For example, the real part of the modulation symbol of the complex field can be placed on the OFDM symbol of the real number field On odd bits subcarrier, the imaginary part of the modulation symbol of the complex field is placed on the idol of the OFDM symbol of the real number field On the carrier wave of seat;
Alternatively, the real part of the modulation symbol of the complex field can be placed on the OFDM symbol of the real number field On even bit subcarrier, the imaginary part of the modulation symbol of the complex field is placed on the surprise of the OFDM symbol of the real number field On numerical digit subcarrier.
It is worth noting that, only each component related to the present invention or module are illustrated above, but the present invention is not It is limited to this.The transmitting device 600 of synchronization signal can also include other component perhaps module about these components or module Particular content can refer to the relevant technologies.
As can be seen from the above embodiments, by using on frequency domain with different sub-carrier interval (i.e. with different wave) OFDM symbol transmits PSS and SSS respectively, and can either improve system performance can optimize spectrum efficiency again, can preferably be It is balanced between system performance and spectrum efficiency.
Embodiment 3
The embodiment of the present invention also provides a kind of communication system, can refer to Fig. 1, content identical with embodiment 1 or 2 is no longer It repeats.In the present embodiment, communication system may include:
Sending device is configured with the transmitting device 600 of synchronization signal as described in Example 2;
Receiving device, the PSS and/or SSS send to the sending device are detected.
The embodiment of the present invention also provides a kind of network equipment, such as can be base station, however, the present invention is not limited thereto, can be with It is other network equipments.
Fig. 7 is the composition schematic diagram of the network equipment of the embodiment of the present invention.As shown in fig. 7, the network equipment 700 can wrap It includes: processor 710 (such as central processor CPU) and memory 720;Memory 720 is coupled to processor 710.Wherein this is deposited Reservoir 720 can store various data;The program 730 of information processing is additionally stored, and is executed under the control of the processor 710 The program 730.
It executes program 730 for example, processor 710 can be configured as and realizes synchronization signal as described in Example 1 Transmission method.Such as processor 710 can be configured as and carry out following control: send PSS using the first OFDM symbol;And SSS is sent using the second OFDM symbol;Wherein first OFDM symbol and second OFDM symbol have not on frequency domain Same subcarrier spacing.
For example, first OFDM symbol is the OFDM symbol of complex field, second OFDM symbol is real number field OFDM symbol;The subcarrier spacing of the OFDM symbol of the real number field is the subcarrier spacing of the OFDM symbol of the complex field Half.
For example, the SSS uses the sequence of real number field;Or the sequence got up of multiple combined sequences using real number field; Perhaps using the sequence of real number field Jing Guo precoding wherein the precoding matrix for discrete cosine transformation matrix or from Dissipate Fourier transform matrix.
In addition, as shown in fig. 7, the network equipment 700 can also include: transceiver 740 and antenna 750 etc.;Wherein, above-mentioned portion Similarly to the prior art, details are not described herein again for the function of part.It is worth noting that, the network equipment 700 is also not necessary to wrap Include all components shown in fig. 7;In addition, the network equipment 700 can also be including the component being not shown in Fig. 7 or module, it can To refer to the prior art.
The embodiment of the present invention also provides a kind of user equipment, and however, the present invention is not limited thereto can also be other equipment.
Fig. 8 is the schematic diagram of the user equipment of the embodiment of the present invention.As shown in figure 8, the user equipment 800 may include place Manage device 810 and memory 820;Memory 820 is stored with data and program, and is coupled to processor 810.It is worth noting that, The figure is exemplary;Can also use other kinds of structure, come supplement or replace the structure, with realize telecommunications functions or its His function.
For example, processor 810 can be configured as the transmission for executing program and realizing synchronization signal as described in Example 1 Method.Such as processor 810 can be configured as and carry out following control: send PSS using the first OFDM symbol;And it uses Second OFDM symbol sends SSS;Wherein first OFDM symbol and second OFDM symbol have different on frequency domain Subcarrier spacing.
As shown in figure 8, the user equipment 800 can also include: communication module 830, input unit 840, display 850, Power supply 860.Wherein, similarly to the prior art, details are not described herein again for the function of above-mentioned component.It is worth noting that, user equipment 800 are also not necessary to include all components shown in fig. 8, and above-mentioned component is not required in that;In addition, user equipment 800 can also include the component being not shown in Fig. 8 or module, can refer to the prior art.
The embodiment of the present invention also provides a kind of computer-readable program, wherein when executing described program in the network device When, described program makes the network equipment execute the transmission method of synchronization signal described in embodiment 1.
The embodiment of the present invention also provides a kind of storage medium for being stored with computer-readable program, wherein the computer can Reader makes the network equipment execute the transmission method of synchronization signal described in embodiment 1.
The embodiment of the present invention also provides a kind of computer-readable program, wherein when executing described program in a user device When, described program makes the user equipment execute the transmission method of synchronization signal described in embodiment 1.
The embodiment of the present invention also provides a kind of storage medium for being stored with computer-readable program, wherein the computer can Reader makes user equipment execute the transmission method of synchronization signal described in embodiment 1.
The device and method more than present invention can be by hardware realization, can also be by combination of hardware software realization.The present invention It is related to such computer-readable program, when the program is performed by logical block, the logical block can be made to realize above The device or component parts, or the logical block is made to realize various method or steps described above.The invention further relates to For storing the storage medium of procedure above, such as hard disk, disk, CD, DVD, flash memory.
The software mould that hardware can be embodied directly in conjunction with the method, device that the embodiment of the present invention describes, executed by processor Block or both combination.For example, one or more groups of one or more of functional block diagram shown in figure and/or functional block diagram It closes, both can correspond to each software module of computer program process, each hardware module can also be corresponded to.These softwares Module can correspond respectively to each step shown in figure.These hardware modules are for example using field programmable gate array (FPGA) these software modules are solidified and is realized.
Software module can be located at RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, post Storage, hard disk, mobile disk, CD-ROM or any other form known in the art storage medium.One kind can be deposited Storage media is coupled to processor, to enable a processor to from the read information, and can be written to the storage medium Information;Or the storage medium can be the component part of processor.Pocessor and storage media can be located in ASIC.This is soft Part module can store in a memory in the mobile terminal, also can store in the storage card that can be inserted into mobile terminal.For example, If equipment (such as mobile terminal) is using the MEGA-SIM card of larger capacity or the flash memory device of large capacity, the software mould Block is storable in the flash memory device of the MEGA-SIM card or large capacity.
It is combined for one or more of function box described in attached drawing and/or the one or more of function box, It can be implemented as general processor, digital signal processor (DSP), the dedicated integrated electricity for executing function described in the invention Road (ASIC), field programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic device Part, discrete hardware components or it is any appropriately combined.One or more of function box for attached drawing description and/or function Can box one or more combinations, be also implemented as calculating the combination of equipment, for example, the combination of DSP and microprocessor, more A microprocessor communicates the one or more microprocessors or any other this configuration combined with DSP.
Combining specific embodiment above, invention has been described, it will be appreciated by those skilled in the art that this A little descriptions are all exemplary, and are not limiting the scope of the invention.Those skilled in the art can be according to the present invention Spirit and principle various variants and modifications are made to the present invention, these variants and modifications are also within the scope of the invention.

Claims (10)

1.一种同步信号的传输装置,其特征在于,所述装置包括:1. A transmission device for a synchronization signal, wherein the device comprises: 主同步信号发送单元,其使用第一正交频分复用符号发送主同步信号;以及a primary synchronization signal transmitting unit that transmits the primary synchronization signal using the first OFDM symbol; and 辅同步信号发送单元,其使用第二正交频分复用符号发送辅同步信号;其中所述第一正交频分复用符号和所述第二正交频分复用符号在频域上具有不同的子载波间隔。A secondary synchronization signal sending unit, which uses a second OFDM symbol to send a secondary synchronization signal; wherein the first OFDM symbol and the second OFDM symbol are in the frequency domain with different subcarrier spacing. 2.根据权利要求1所述的装置,其中,所述第一正交频分复用符号为复数域的正交频分复用符号,所述第二正交频分复用符号为实数域的正交频分复用符号;所述实数域的正交频分复用符号的子载波间隔是所述复数域的正交频分复用符号的子载波间隔的一半。2. The apparatus according to claim 1, wherein the first OFDM symbol is an OFDM symbol in the complex domain, and the second OFDM symbol is in the real domain The OFDM symbol of the real number domain; the subcarrier spacing of the OFDM symbol in the real number domain is half of the subcarrier spacing of the OFDM symbol in the complex number domain. 3.根据权利要求2所述的装置,其中,所述辅同步信号使用实数域的序列;或者使用实数域的多个序列组合起来的序列;或者使用经过预编码的实数域的序列,其中所述预编码的矩阵为离散余弦变换矩阵或者离散傅里叶变换矩阵。3. The apparatus according to claim 2, wherein the secondary synchronization signal uses a sequence in the real number domain; or a combination of multiple sequences in the real number domain; or a precoded sequence in the real number domain, wherein the The precoding matrix is a discrete cosine transform matrix or a discrete Fourier transform matrix. 4.根据权利要求2所述的装置,其中,4. The apparatus of claim 2, wherein, 所述复数域的正交频分复用符号表示为:The OFDM symbol in the complex domain is expressed as: 所述实数域的正交频分复用符号表示为:The OFDM symbol in the real number domain is expressed as: 其中,T表示符号的持续时间,K表示子载波的个数,k表示子载波的序号,ak表示所述复数域的正交频分复用符号的第k个子载波上的载荷,bk表示所述实数域的正交频分复用符号的第k个子载波上的载荷。where T represents the duration of the symbol, K represents the number of sub-carriers, k represents the sequence number of the sub-carriers, a k represents the load on the k-th sub-carrier of the OFDM symbol in the complex domain, b k represents the load on the kth subcarrier of the OFDM symbol in the real domain. 5.根据权利要求2至4任一项所述的装置,其中,所述实数域的正交频分复用符号还承载有用于数据传输的数据信号。5. The apparatus according to any one of claims 2 to 4, wherein the OFDM symbols in the real number domain further carry a data signal for data transmission. 6.根据权利要求5所述的装置,其中,所述数据信号为复数域的调制符号;所述复数域的调制符号的实数部分和虚数部分被分别放置在所述实数域的正交频分复用符号的不同子载波上。6. The apparatus according to claim 5, wherein the data signal is a modulation symbol of the complex domain; the real part and the imaginary part of the modulation symbol of the complex domain are respectively placed in the orthogonal frequency division of the real domain Multiplex symbols on different subcarriers. 7.根据权利要求6所述的装置,其中,所述复数域的调制符号的实数部分被放置在所述实数域的正交频分复用符号的奇数位子载波上,所述复数域的调制符号的虚数部分被放置在所述实数域的正交频分复用符号的偶位子载波上;7. The apparatus of claim 6, wherein the real portion of the complex-domain modulation symbol is placed on odd-bit subcarriers of the real-domain OFDM symbol, the complex-domain modulation the imaginary part of the symbol is placed on the even-bit subcarriers of the OFDM symbol in the real domain; 或者,所述复数域的调制符号的实数部分被放置在所述实数域的正交频分复用符号的偶数位子载波上,所述复数域的调制符号的虚数部分被放置在所述实数域的正交频分复用符号的奇数位子载波上。Alternatively, the real part of the modulation symbol in the complex domain is placed on the even-bit subcarriers of the OFDM symbol in the real domain, and the imaginary part of the modulation symbol in the complex domain is placed in the real domain OFDM symbols on odd-bit subcarriers. 8.一种同步信号的传输方法,其特征在于,所述方法包括:8. A method for transmitting a synchronization signal, wherein the method comprises: 使用第一正交频分复用符号发送主同步信号;以及transmitting the primary synchronization signal using the first OFDM symbol; and 使用第二正交频分复用符号发送辅同步信号;其中所述第一正交频分复用符号和所述第二正交频分复用符号在频域上具有不同的子载波间隔。A secondary synchronization signal is sent using a second OFDM symbol; wherein the first OFDM symbol and the second OFDM symbol have different subcarrier spacings in the frequency domain. 9.根据权利要求8所述的方法,其中,所述第一正交频分复用符号为复数域的正交频分复用符号,所述第二正交频分复用符号为实数域的正交频分复用符号;所述实数域的正交频分复用符号的子载波间隔是所述复数域的正交频分复用符号的子载波间隔的一半。9. The method of claim 8, wherein the first OFDM symbol is an OFDM symbol in the complex domain, and the second OFDM symbol is in the real domain The OFDM symbol of the real number domain; the subcarrier spacing of the OFDM symbol in the real number domain is half of the subcarrier spacing of the OFDM symbol in the complex number domain. 10.一种通信系统,其特征在于,所述通信系统包括:10. A communication system, characterized in that the communication system comprises: 发送设备,其包括如权利要求1至7任一项所述的同步信号的传输装置;A sending device, comprising the transmission device of the synchronization signal according to any one of claims 1 to 7; 接收设备,其对所述发送设备发送的主同步信号和/或辅同步信号进行检测。A receiving device, which detects the primary synchronization signal and/or the secondary synchronization signal sent by the sending device.
CN201711155985.5A 2017-11-20 2017-11-20 Synchronization signal transmission method, device and communication system Pending CN109818896A (en)

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Application publication date: 20190528