CN105103632B - Synchronization signal forwarding method and user equipment - Google Patents

Abstract

The invention provides a synchronization signal forwarding method and user equipment, which comprise the following steps: the user equipment receives a synchronous signal; the user equipment determines resources occupied by the transfer synchronization signal according to the resources occupied by the synchronization signal; and the user equipment sends the transfer synchronization signal according to the resource occupied by the transfer synchronization signal. In the technical scheme of the invention, the user equipment determines the resources occupied by the transfer synchronization signal according to the resources occupied by the received synchronization signal, and then sends the transfer synchronization signal. The occupied resource may be used to identify the accuracy of the synchronization signal, and after the accuracy of the received synchronization signal is determined, the user equipment may determine the accuracy of the relayed synchronization signal according to the accuracy and relay the synchronization signal. When the user equipment receives more than two synchronous signals with different precisions, the synchronous signals can still be ensured to be obtained, and the normal communication of the user equipment is ensured.

Description

Synchronization signal retransmission method and user equipment

Technical field

The present invention relates to the communication technology more particularly to a kind of synchronization signal retransmission methods and user equipment.

Background technique

Mobile communication system development brings continuing to increase for bandwidth demand, and the distribution of bandwidth becomes more and more crowded, due toThe frequency spectrum resource that can be used for mobile communication is extremely limited, so the bandwidth demand that can be assigned to can not meet the need of real systemAsk, end-to-end (Device-to-Device, the abbreviation D2D) communication technology is come into being, D2D communication refer between user equipment withoutThe direct communication crossing base station transfer, and carrying out, and can under the control of subzone network with community user shared resource, therefore frequencyThe utilization rate of spectrum will get a promotion, and can also effectively mitigate the burden of Cellular Networks.

User equipment carries out D2D communication and synchronisation source is just needed to provide a unified timing for the user equipment of communication, butThe range that synchronisation source can cover is smaller, it is necessary to which user equipment forwards synchronization signal.User equipment is generally forwarded and can be connectThe synchronization signal of the full accuracy received, the precision of the synchronization signal after forwarding are lower than the precision received.However, when certain useAfter family equipment receives the synchronization signal of more than two different accuracies, if there is interference between synchronization signal, receiveThe user equipment of these synchronization signals can not obtain and forward synchronization signal.

Summary of the invention

The embodiment of the present invention provides a kind of synchronization signal retransmission method and user equipment, to solve the synchronous letter of different accuracyThe problem of causing user equipment that can not obtain synchronization signal is interfered with each other between number.

First aspect present invention provides a kind of synchronization signal retransmission method, comprising:

User equipment receives synchronization signal；

The user equipment determines the precision of the synchronization signal according to the resource that the synchronization signal occupies；

The user equipment determines the precision of transfer synchronization signal according to the precision of the synchronization signal；

The user equipment determines the resource that the transfer synchronization signal occupies according to the precision of the transfer synchronization signal；

The user equipment sends the transfer synchronization signal according to the resource that the transfer synchronization signal occupies.

In the first possible implementation of first aspect, money that the user equipment is occupied according to the synchronization signalSource determines that the precision of the synchronization signal includes:

The user equipment is determined according to the synchronization signal using the number of orthogonal frequency division multiplex OFDM symbol described sameThe precision of signal is walked, wherein the synchronization signal of different accuracy occupies different resources.

The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect, instituteThe synchronization signal for stating different accuracy occupies different resources, comprising:

The synchronization signal of different accuracy occupies the OFDM symbol of different numbers.

The possible implementation of second with reference to first aspect, in the third possible implementation of first aspect, instituteThe synchronization signal for stating different accuracy occupies the OFDM symbol of different numbers, comprising: the OFDM symbol that high-precision synchronization signal occupiesNumber number more than low precision synchronization signal occupy OFDM symbol number.

The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect, whenSome OFDM symbol had not only belonged to the resource set that the synchronization signal of arrival occupies, but also belonged to the resource set of transfer synchronization signal occupancyWhen, the content that the transfer synchronization signal is sent in the OFDM symbol is identical as the content received.

With reference to first aspect, any one possible implementation of first to fourth kind of first aspect, in first aspectThe 5th kind of possible implementation in, the resource that the user equipment is occupied according to the transfer synchronization signal sends the transferAfter synchronization signal, further includes:

It is reception synchronization signal that the user equipment stochastic transformation, which sends transfer synchronization signal, and most to the precision receivedHigh synchronization signal is forwarded.

Second aspect of the present invention provides a kind of synchronization signal retransmission unit, comprising:

Receiving module receives synchronization signal for user equipment；

Determining module, the resource that the synchronization signal for being received according to receiving module occupies determine the synchronous letterNumber precision, the precision of transfer synchronization signal is determined according to the precision of the synchronization signal, according to the transfer synchronization signalPrecision determines the resource that the transfer synchronization signal occupies；

Sending module, for according to the resource transmission of the determining transfer synchronization signal occupancy of the determining moduleTransfer synchronization signal.

In the first possible implementation of second aspect, the determining module is specifically used for:

The essence of the synchronization signal is determined using the number of the OFDM symbol of orthogonal frequency division multiplexing according to the synchronization signalDegree, and the synchronization signal of different accuracy occupies different resources.

In second of possible implementation of second aspect, the determining module is specifically used for:

Determine that the synchronization signal of different accuracy occupies the OFDM symbol of different numbers.

In second of possible implementation in conjunction with second aspect, in the third possible implementation of second aspect,The OFDM symbol number that the higher synchronization signal of the precision that the determining module determines occupies is more, the lower synchronization signal of precisionThe OFDM symbol number of occupancy is fewer.

In the third possible implementation in conjunction with second aspect, in the 4th kind of possible implementation of second aspect,The determining module is specifically used for, and when the resource set that the synchronization signal that some OFDM symbol had not only belonged to arrival occupies, but also belongs toWhen turning the resource set of synchronization signal occupancy, content that the transfer synchronization signal is sent in the OFDM symbol with receiveContent is identical.

In conjunction with second aspect, first to fourth kind of second aspect any one possible implementation, described device is also wrappedIt includes:

Forwarding module, for being sent in described according to the sending module according to the resource that the transfer synchronization signal occupiesAfter turning synchronization signal, it is to receive synchronization signal, and can receive to receiving module that stochastic transformation, which sends transfer synchronization signal,The highest synchronization signal of precision be forwarded.

Third aspect present invention provides a kind of user equipment, comprising:

Receiver, for receiving synchronization signal；

Processor, the resource that the synchronization signal for being received according to receiver occupies determine the synchronization signalPrecision determines the precision of transfer synchronization signal according to the precision of the synchronization signal, according to the precision of the transfer synchronization signalDetermine the resource that the transfer synchronization signal occupies；

Transmitter, the resource that the transfer synchronization signal for being determined according to the processor occupies send the transferSynchronization signal.

In the first possible implementation of the third aspect, the processor is specifically used for: according to the synchronization signalThe precision of the synchronization signal is determined using the number of orthogonal frequency division multiplex OFDM symbol, and the synchronization signal of different accuracy occupiesDifferent resources.

In second of possible implementation of the third aspect, the processor is specifically used for:

Determine that the synchronization signal of different accuracy occupies the OFDM symbol of different numbers.

In conjunction with second of possible implementation of the third aspect, in the third possible implementation of the third aspect, instituteThe OFDM symbol number for stating the higher synchronization signal occupancy of the determining precision of processor is more, and the lower synchronization signal of precision occupiesOFDM symbol number it is fewer.

In conjunction with the third possible implementation of the third aspect, in the 4th kind of possible implementation kind of the third aspect, instituteIt states processor to be specifically used for, when some OFDM symbol had not only belonged to the resource set that received synchronization signal occupies, but also to belong to transfer sameWhen walking the resource set that signal occupies, the content that the transfer synchronization signal is sent in the OFDM symbol and the content receivedIt is identical.

In conjunction with the third aspect, first to fourth kind of the third aspect any one possible realization, the of the third aspectIn five kinds of possible implementations, the transmitter, after being also used to send the transfer synchronization signal, stochastic transformation sends transferSynchronization signal is to receive synchronization signal, and the highest synchronization signal of precision that can be received to receiver is forwarded.

The embodiment of the present invention provides a kind of synchronization signal retransmission method and user equipment, user equipment are same according to what is receivedThe occupied resource of signal is walked to determine the resource of transfer synchronization signal occupancy, then user equipment sends transfer synchronization signal.Wherein, the occupied resource of synchronization signal can be used for identifying the precision of synchronization signal, true in the synchronization signal precision receivedAfter fixed, user equipment can determine the precision of the synchronization signal of institute's transfer and the transfer synchronization signal according to the precision.So thatWhen user equipment receives the synchronization signal of more than two different accuracies, it still is able to guarantee to obtain synchronization signal, ensure thatThe normal communication of user equipment.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show belowThere is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hairBright some embodiments for those of ordinary skill in the art without any creative labor, can be withIt obtains other drawings based on these drawings.

Fig. 1 is the flow chart of synchronization signal retransmission method provided by one embodiment of the present invention；

Fig. 2 is the synchronization signal expression figure for the synchronization signal retransmission method that another embodiment of the present invention provides；

Fig. 3 is the scene figure for the synchronization signal retransmission method that another embodiment of the present invention provides；

Fig. 4 is the scene figure for the synchronization signal retransmission method that another embodiment of the present invention provides；

Fig. 5 is the structural schematic diagram for the synchronization signal retransmission unit that another embodiment of the present invention provides；

Fig. 6 is the structural schematic diagram for the user equipment that another embodiment of the present invention provides；

Fig. 7 is the structural schematic diagram for the user equipment that another embodiment of the present invention provides.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based onEmbodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every otherEmbodiment shall fall within the protection scope of the present invention.

User equipment involved in the application, can be wireless terminal, and wireless terminal can be directed to user and provide voiceAnd/or the equipment of data connectivity, with wireless connecting function handheld device or be connected to radio modem itsHis processing equipment.Wireless terminal can be mobile terminal, such as mobile phone (or being " honeycomb " phone) and with mobile terminalComputer, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device.For example,Personal communication service (PCS, Personal Communication Service) phone, wireless phone, Session initiation Protocol(SIP) phone, wireless local loop (WLL, Wireless Local Loop) are stood, personal digital assistant (PDA, PersonalDigital Assistant) etc. equipment.Wireless terminal is referred to as system, subscriber unit (Subscriber Unit), ordersFamily station (Subscriber Station), movement station (Mobile Station), mobile station (Mobile), distant station (RemoteStation), access point (Access Point), remote terminal (Remote Terminal), access terminal (AccessTerminal), user terminal (User Terminal), user agent (User Agent), user equipment (User Device),Or user equipment (User Equipment).

In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/Or ", only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, it can be with tableShow: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, typicallys represent front and backAffiliated partner is a kind of relationship of "or".

Fig. 1 is the flow chart of synchronization signal retransmission method provided by one embodiment of the present invention, as shown in Figure 1, this methodInclude:

Step 101: user equipment receives synchronization signal；

Wherein, the synchronization signal that user equipment receives base station or other users equipment is sent.

Step 102: user equipment determines the precision of synchronization signal according to the resource that synchronization signal occupies.

Step 103: user equipment determines the precision of transfer synchronization signal according to the precision of synchronization signal.

Step 104: user equipment determines the resource that transfer synchronization signal occupies according to the precision of transfer synchronization signal.

Wherein, orthogonal frequency division multiplexing (the Orthogonal Frequency- that user equipment is used according to synchronization signalDivision Multiple, abbreviation OFDM) number of symbol determines the precision of synchronization signal, and the synchronization signal of different accuracyDifferent resources is occupied, i.e. the synchronization signal of different accuracy occupies the OFDM symbol of different numbers, as a kind of feasible embodiment partyThe number of formula, the OFDM symbol that high-precision synchronization signal occupies is a more than the OFDM symbol that the synchronization signal of low precision occupiesNumber.

Optionally, if some OFDM symbol not only belonged to the resource set that the synchronization signal received occupies, but also belong to transferThe resource set that synchronization signal occupies, then transfer synchronization signal the content in this OFDM symbol and the synchronization signal that receivesIt is identical.Wherein, resource set is the general name of the occupied resource of synchronization signal.Specifically, user equipment is according to the synchronization receivedThe resource that signal occupies, the i.e. number of OFDM symbol determine the precision of synchronization signal, and then according to identified synchronization signalPrecision determines the precision of transfer synchronization signal, wherein the precision of transfer synchronization signal is lower than the precision of the synchronization signal received,The occupied resource of transfer synchronization signal, i.e. transfer synchronization signal institute are finally determined according to the precision of determining transfer synchronization signalThe number for the OFDM symbol for including.

Step 105: user equipment sends transfer synchronization signal according to the resource that transfer synchronization signal occupies.

Synchronization signal retransmission method provided in an embodiment of the present invention, user equipment is according to occupied by the synchronization signal receivedResource come determine transfer synchronization signal occupy resource, then user equipment send transfer synchronization signal, wherein it is occupiedResource can be used for identifying the precision of synchronization signal, and after the synchronization signal precision received determines, user equipment can basisThe precision determines the precision of the synchronization signal of institute's transfer and the transfer synchronization signal.So that when user equipment receive two withWhen the synchronization signal of upper different accuracy, it still is able to guarantee to obtain synchronization signal, ensure that the normal communication of user equipment.

The synchronization signal retransmission method that another embodiment of the present invention provides present embodiments provides user equipment shouldIt is to receive synchronization signal that stochastic transformation, which sends transfer synchronization signal, when sending transfer synchronization signal, to determine whether higher precisionThe synchronization signal of rank is ignored by oneself.

Wherein, the synchronization signal of different accuracy is indicated using the synchronization signal of different stage, or is stated otherwise,As long as can distinguish synchronization signal is all invention which is intended to be protected, the present invention includes being not limited to following citings.

Such as in the embodiment of the present invention, the synchronization signal of different accuracy uses under type such as to state:

1 grade of synchronization signal, 2 grades of synchronization signals, 3 grades of synchronization signals ..., n grades of synchronization signals indicate, wherein 1 grade sameWalk the precision highest of signal.

Wherein, the synchronization signal of different accuracy can be stored in terminal or base station by preset mode, the present inventionIt does not limit it.

Further, 1 grade of synchronization signal (superlative degree) is by evolved base station (evolved Node B, abbreviation eNB) in downlinkFrequency band is sent, and can be distinguished naturally with other ranks, remaining rank as shown in Fig. 2, can distinguish by the following method:

2 grades of synchronization signals use 4 OFDM symbols；3 grades of synchronization signals use 3 OFDM symbols；4 grades of synchronization signals use2 OFDM symbols；5 grades of synchronization signals use 1 OFDM symbol, and the signal one that each used OFDM symbol is sentSample, wherein each box indicates an OFDM symbol in figure, and with " sending out_n" indicate the content that used OFDM symbol is sent,Wherein, n can be 1,2,3,4.......

As shown in Figure 3, it is assumed that in the present embodiment scene, including base station A, user equipment B, user equipment C and user equipmentD, wherein base station A, user equipment B, user equipment C and user equipment D covering radius be each about the half of triangle side length,The forwarding process of synchronization signal is as follows:

Base station A emits 1 grade of synchronization signal, and the user equipment B in the A coverage area of base station receives base station in downstream bandsAfter the synchronization signal of A transmitting, judge this synchronization signal for 1 grade of synchronization signal.User equipment B forwards this synchronization signal, is forwardedSynchronization signal rank afterwards is lower than the rank for the synchronization signal that user equipment receives, such as can set before as followsAny one of rank: 2 grades, 3 grades, 4 grades, 5 grades；The present embodiment transfer to be sent as user equipment B using 2 grades of synchronization signalsSynchronization signal；

The synchronous letter that the user equipment C in signal cover receives user equipment B transmission is sent positioned at user equipment BNumber, the number of the OFDM symbol according to used in synchronization signal judges that the precision of synchronization signal is 2 grades, and forwards this synchronizationSignal, the synchronization signal precision grade after being forwarded are lower than the precision grade for the synchronization signal that user equipment C is received, such as canTo use any one of the following rank set before: 3 grades, 4 grades, 5 grades, the present embodiment is using 3 grades of synchronization signals as userTransfer synchronization signal equipment C to be sent, then user equipment C sends 3 grades of synchronization signals as transfer synchronization signal；

The synchronous letter that the user equipment D in signal cover receives user equipment C transmission is sent positioned at user equipment CNumber, the number of the OFDM symbol according to used in synchronization signal judges that the precision of synchronization signal is 3 grades of synchronization signals, and turnsThis synchronization signal is sent out, the precision grade of the synchronization signal after forwarding is lower than the levels of precision for the synchronization signal that user equipment D is receivedNot, such as any one of the following rank that can be set before: 4 grades, 5 grades, the present embodiment using 4 grades of synchronization signals asTransfer synchronization signal user equipment D to be sent；

At this point, base station A sends 1 grade of synchronization signal, user equipment B forwards 2 grades of synchronization signals, and 3 grades of user equipment C forwarding is sameSignal is walked, user equipment D forwards 4 grades of synchronization signals.

Wherein, the rank of transfer synchronization signal transmitted by user terminal can also be related with the hardware condition of equipment itselfSystem, such as: the poor terminal of itself crystal oscillator may send the other synchronization signal of lower level.

Further, as shown in figure 4, application scenarios for Fig. 3, can further include: user equipment E, whereinUser equipment E and base station A, user equipment B, user equipment C and user equipment D covering radius be each about the one of triangle side lengthHalf, and base station A sends 1 grade of synchronization signal, user equipment B forwards 2 grades of synchronization signals, and user equipment C forwards 3 grades of synchronization signals,User equipment D forwards 4 grades of synchronization signals.

When position is switched on user equipment E in figure, it can receive 1 grade of synchronization signal of base station A transmission, Yong Hushe simultaneouslyThe superposition letter that standby B forwards 2 grades of synchronization signals, user equipment C that 3 grades of synchronization signals, user equipment D is forwarded to forward 4 grades of synchronization signalsNumber, since 1 grade of synchronization signal of base station A forwarding is sent in downlink bandwidth, 2 grades of synchronization signals can be forwarded with user equipment B, are usedFamily equipment C forwards 3 grades of synchronization signals, user equipment D that the superposed signal of 4 grades of synchronization signals is forwarded to distinguish, and due to baseThe rank highest of 1 grade of synchronization signal of the A that stands forwarding, user equipment E will receive 1 and synchronization signal of highest level and turn at this timeHair, the precision grade of the synchronization signal after being forwarded are lower than the precision grade for the synchronization signal that user equipment E is received, such as canAny one of following rank to be set before use: 2 grades, 3 grades, 4 grades, 5 grades, the precision of transmitted transfer synchronization signalThe hardware condition of rank and equipment E itself have relationship, such as:: it is other same that the poor terminal of itself crystal oscillator may send lower levelWalk signal.The present embodiment transfer synchronization signal to be sent as user equipment E using 2 grades of synchronization signals, at this point, base station A sends 1The synchronous not signal of grade, user equipment B forward 2 grades of synchronization signals, and user equipment C forwards 3 grades of synchronization signals, user equipment D forwarding 4Grade synchronization signal, user equipment E forward 2 grades of synchronization signals.

Since the precision grade of synchronization signal is higher, and error is smaller, so that should preferentially select oneself can for user equipmentThe synchronization signal of the full accuracy rank received is forwarded, at this point, user equipment D is in user equipment C and user simultaneouslyIn the coverage area of equipment E, and 3 grades of synchronization signals of user equipment C forwarding and 2 grades of synchronization signals of user equipment E forwarding are foldedIt is 2 grades of synchronization signals after adding, and if user equipment D is constantly in the shape for 3 grades of synchronization signals that forwarding user equipment C is sentState can not just receive 2 grades of synchronization signals transmitted by user equipment E.Then user equipment D will mistakenly believe that user equipment E instituteWhat is sent is only also 3 grades of synchronization signals, to will not give up 3 grades that the user equipment C oneself tracked is sentSynchronization signal transfers 2 grades of synchronization signals of tracing customer equipment E transmission.Then it loses and obtains the synchronous chance of higher level.

So user equipment D should random forwarding be receive, to judge whether there is the synchronization signal of higher precision rank.

When user equipment D forwarding is receives, when starting to receive synchronization signal, 2 grades for will receiving user equipment E transmission are sameSignal is walked, and this 2 grades of synchronization signals are forwarded.

Synchronization signal retransmission method provided in an embodiment of the present invention, user equipment is according to occupied by the synchronization signal receivedResource come determine transfer synchronization signal occupy resource, then user equipment send transfer synchronization signal.Wherein, occupiedResource can be used for identifying the precision of synchronization signal, and after the synchronization signal precision received determines, user equipment can basisThe precision determines the precision of the synchronization signal of institute's transfer and the transfer synchronization signal.Also, user equipment meeting random forwarding isIt receives, so that the synchronization signal of higher precision rank will not be ignored, so that when user equipment receives more than two different accuraciesWhen synchronization signal, it still is able to guarantee to obtain synchronization signal, and forward the synchronization signal of higher precision, ensure that user equipmentNormal communication.

Fig. 5 be another embodiment of the present invention provides synchronization signal retransmission unit structural schematic diagram, as shown in figure 5, shouldDevice includes: receiving module 11, determining module 12 and sending module 13, and wherein receiving module, receives for user equipment and synchronizeSignal；Determining module 12, the resource that the synchronization signal for being received according to receiving module 11 occupies determine the essence of synchronization signalDegree, the precision of transfer synchronization signal is determined according to the precision of synchronization signal, determines that transfer is same according to the precision of transfer synchronization signalWalk the resource that signal occupies；Sending module 13, the resource that the transfer synchronization signal for being determined according to determining module 11 occupies are sent outSend transfer synchronization signal.

Wherein, in synchronous signal receiver-repeating process, receiving module 11 receives the synchronous letter that other users equipment is sentNumber, the number for the OFDM symbol that then determining module 12 is used according to the synchronization signal that receiving module 11 receives determines synchronous letterNumber precision, optionally, the synchronization signal of different accuracy occupies different resources, further, the synchronization signal of different accuracyOccupy the OFDM symbol of different numbers, and the OFDM symbol number that the higher synchronization signal of precision occupies is more, precision is lowerThe OFDM symbol number that synchronization signal occupies is fewer.

When the resource set that the synchronization signal that some OFDM symbol had not only belonged to arrival occupies, but also belong to transfer synchronization signal occupancyResource set when, the content that the transfer synchronization signal is sent in the OFDM symbol is identical as the content received, whereinResource set is the general name of the occupied resource of synchronization signal.

Specifically, the resource that determining module 12 is occupied according to the synchronization signal that receiving module 11 receives, i.e. OFDM symbolNumber determine the precision of synchronization signal, and then the essence of transfer synchronization signal is determined according to the precision of identified synchronization signalDegree, wherein the precision of transfer synchronization signal is lower than the precision of the synchronization signal received, finally according to the synchronous letter of determining transferNumber precision determine the occupied resource of transfer synchronization signal, i.e. the number of the transfer synchronization signal OFDM symbol that is included, andThe determining occupied resource of transfer synchronization signal is sent to sending module 13；When sending module 13 receives determining module 12The identified occupied resource of transfer synchronization signal sends transfer synchronization signal.

Further, as shown in fig. 6, can further include for above-mentioned synchronization signal retransmission unit: forwardingModule 14, for sending the synchronous letter of the transfer according to the resource that the transfer synchronization signal occupies according to the sending module 13After number, it is reception synchronization signal that stochastic transformation, which sends transfer synchronization signal, and to the precision that receiving module 11 can receiveHighest synchronization signal is forwarded.User equipment provided in an embodiment of the present invention, the synchronization provided for the embodiment of the present invention oneThe execution equipment of signal retransmission method, the detailed process for executing synchronization signal retransmission method can be found in Fig. 1, Fig. 2, Fig. 3 and Fig. 4Shown in associated description in embodiment of the method, details are not described herein.

User equipment provided in an embodiment of the present invention determines transfer by the occupied resource of the synchronization signal receivedThe resource that synchronization signal occupies, then user equipment sends transfer synchronization signal.Wherein, occupied resource can be used for identifyingThe precision of synchronization signal, after the synchronization signal precision received determines, user equipment can determine institute's transfer according to the precisionSynchronization signal precision and the transfer synchronization signal, and user equipment can random forwarding be to receive, to will not ignore higherThe synchronization signal of precision, so that still being able to guarantee when user equipment receives the synchronization signal of more than two different accuraciesSynchronization signal is obtained, and forwards the synchronization signal of higher precision, ensure that the normal communication of user equipment.

Fig. 7 be another embodiment of the present invention provides user equipment structural schematic diagram, as shown in fig. 7, the present embodiment mentionsThe user equipment of confession includes: receiver 21, processor 22 and transmitter 23, wherein receiver 21, for receiving synchronization signal；Processor 22, the resource that the synchronization signal for being received according to receiver 21 occupies determines the precision of synchronization signal, according to sameThe precision of step signal determines the precision of transfer synchronization signal, determines that transfer synchronization signal occupies according to the precision of transfer synchronization signalResource；Transmitter 23, the resource that the transfer synchronization signal for being determined according to processor 22 occupies send transfer synchronization signal.

Wherein, receiver 21 receives the synchronization signal that other users equipment is sent, and then processor 22 is according to receiver 21The synchronization signal received determines the precision of synchronization signal using the number of OFDM symbol, optionally, the synchronous letter of different accuracyNumber occupy different resource；Further, the synchronization signal of different accuracy uses the OFDM symbol of different numbers, and precision is higherThe OFDM symbol number that uses of synchronization signal it is more, the OFDM symbol number that the lower synchronization signal of precision uses is fewer.

When the resource set that the synchronization signal that some OFDM symbol had not only belonged to arrival occupies, but also belong to transfer synchronization signal occupancyResource set when, the content that the transfer synchronization signal is sent in the OFDM symbol is identical as the content received, whereinResource set is the general name of the occupied resource of synchronization signal.

Specifically, the resource that processor 22 is occupied according to the determining synchronization signal received, the i.e. number of OFDM symbolIt determines the precision of synchronization signal, and then determines the precision of transfer synchronization signal according to the precision of identified synchronization signal, whereinThe precision of transfer synchronization signal is lower than the precision of the synchronization signal received, finally according to the precision of determining transfer synchronization signalDetermine the occupied resource of transfer synchronization signal, i.e. the number of the transfer synchronization signal OFDM symbol that is included, and will be determiningThe occupied resource of transfer synchronization signal is sent to transmitter 23；When to receive transfer determined by processor 22 same for transmitter 23It walks the occupied resource of signal and sends transfer synchronization signal.

Optionally, transmitter 23, after being also used to send transfer synchronization signal, stochastic transformation sends transfer synchronization signal and isSynchronization signal is received, and the highest synchronization signal of precision that can be received to receiver 21 is forwarded.The embodiment of the present inventionThe user equipment of offer can be used for executing the technical solution of above method embodiment, and it is similar that the realization principle and technical effect are similar,Details are not described herein again.

Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass throughThe relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the programWhen being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or lightThe various media that can store program code such as disk.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extentPipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according toSo be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features intoRow equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solutionThe range of scheme.

Claims (12)

Translated fromChinese

1.一种同步信号转发方法，其特征在于，包括：1. a synchronization signal forwarding method, is characterized in that, comprising:用户设备接收同步信号；The user equipment receives the synchronization signal;所述用户设备根据所述同步信号占用的资源确定所述同步信号的精度；determining, by the user equipment, the precision of the synchronization signal according to the resources occupied by the synchronization signal;所述用户设备根据所述同步信号的精度确定中转同步信号的精度；The user equipment determines the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal;所述用户设备根据所述中转同步信号的精度确定所述中转同步信号占用的资源；determining, by the user equipment, resources occupied by the relay synchronization signal according to the accuracy of the relay synchronization signal;所述用户设备根据所述中转同步信号占用的资源发送所述中转同步信号；sending, by the user equipment, the relay synchronization signal according to the resources occupied by the relay synchronization signal;所述用户设备根据所述同步信号占用的资源确定所述同步信号的精度包括：The user equipment determining the accuracy of the synchronization signal according to the resources occupied by the synchronization signal includes:所述用户设备根据所述同步信号使用正交频分复用OFDM符号的个数确定所述同步信号的精度，其中不同精度的同步信号占用不同的资源；The user equipment determines the precision of the synchronization signal according to the synchronization signal using the number of orthogonal frequency division multiplexing OFDM symbols, wherein synchronization signals with different precisions occupy different resources;所述不同精度的同步信号占用不同的资源，包括：The synchronization signals of different precisions occupy different resources, including:不同精度的同步信号占用不同个数的OFDM符号。Synchronization signals with different precisions occupy different numbers of OFDM symbols.2.根据权利要求1所述的方法，其特征在于，所述不同精度的同步信号占用不同个数的OFDM符号，包括：高精度的同步信号占用的OFDM符号的个数多于低精度的同步信号占用的OFDM符号的个数。2 . The method according to claim 1 , wherein the synchronization signals of different precision occupy different numbers of OFDM symbols, comprising: the number of OFDM symbols occupied by the synchronization signals of high precision is more than that of synchronization signals of low precision. 3 . The number of OFDM symbols occupied by the signal.3.根据权利要求2所述的方法，其特征在于，当某个OFDM符号既属于接收的同步信号占用的资源集，又属于中转同步信号占用的资源集时，所述中转同步信号在所述OFDM符号上发送的内容与接收到的内容相同。3. The method according to claim 2, wherein when a certain OFDM symbol belongs to both the resource set occupied by the received synchronization signal and the resource set occupied by the relay synchronization signal, the relay synchronization signal in the What is sent on an OFDM symbol is the same as what is received.4.根据权利要求1-3任一项所述的方法，其特征在于，所述用户设备根据所述中转同步信号占用的资源发送所述中转同步信号之后，还包括：The method according to any one of claims 1-3, wherein after the user equipment sends the relay synchronization signal according to the resources occupied by the relay synchronization signal, the method further comprises:所述用户设备随机变换发送中转同步信号为接收同步信号，并对接收到的精度最高的同步信号进行转发。The user equipment randomly converts the sending and relaying synchronization signal into the receiving synchronization signal, and forwards the received synchronization signal with the highest precision.5.一种同步信号转发装置，其特征在于，包括：5. A synchronization signal transponder, characterized in that, comprising:接收模块，用于用户设备接收同步信号；a receiving module, used for the user equipment to receive the synchronization signal;确定模块，用于根据接收模块接收到的所述同步信号占用的资源确定所述同步信号的精度，根据所述同步信号的精度确定中转同步信号的精度，根据所述中转同步信号的精度确定所述中转同步信号占用的资源；The determining module is configured to determine the accuracy of the synchronization signal according to the resources occupied by the synchronization signal received by the receiving module, determine the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal, and determine the accuracy of the relay synchronization signal according to the accuracy of the relay synchronization signal. The resources occupied by the above-mentioned relay synchronization signal;发送模块，用于根据所述确定模块确定的所述中转同步信号占用的资源发送所述中转同步信号；a sending module, configured to send the relay synchronization signal according to the resources occupied by the relay synchronization signal determined by the determining module;所述确定模块具体用于：The determining module is specifically used for:根据所述同步信号使用正交频分复用OFDM符号的个数确定所述同步信号的精度，且不同精度的同步信号占用不同的资源；The precision of the synchronization signal is determined according to the number of orthogonal frequency division multiplexed OFDM symbols according to the synchronization signal, and synchronization signals with different precisions occupy different resources;所述确定模块具体用于：The determining module is specifically used for:确定不同精度的同步信号占用不同个数的OFDM符号。It is determined that synchronization signals with different precisions occupy different numbers of OFDM symbols.6.根据权利要求5所述的装置，其特征在于，所述确定模块确定的精度越高的同步信号占用的OFDM符号个数越多，精度越低的同步信号占用的OFDM符号个数越少。6 . The apparatus according to claim 5 , wherein the synchronization signal with higher precision determined by the determining module occupies more OFDM symbols, and the synchronization signal with lower precision occupies fewer OFDM symbols. 7 . .7.根据权利要求6所述的装置，其特征在于，所述确定模块具体用于，当某个OFDM符号既属于接收的同步信号占用的资源集，又属于中转同步信号占用的资源集时，所述中转同步信号在所述OFDM符号上发送的内容与接收到的内容相同。7. The apparatus according to claim 6, wherein the determining module is specifically configured to, when a certain OFDM symbol belongs to both the resource set occupied by the received synchronization signal and the resource set occupied by the relay synchronization signal, The content sent by the relay synchronization signal on the OFDM symbol is the same as the content received.8.根据权利要求5-7任一项所述的装置，其特征在于，所述装置还包括：8. The device according to any one of claims 5-7, wherein the device further comprises:转发模块，用于根据所述发送模块根据所述中转同步信号占用的资源发送所述中转同步信号之后，随机变换发送中转同步信号为接收同步信号，并对接收模块能够接收到的精度最高的同步信号进行转发。The forwarding module is configured to randomly transform the sending of the relay synchronization signal into the reception synchronization signal after the transmission module sends the relay synchronization signal according to the resources occupied by the relay synchronization signal, and perform synchronization with the highest precision that the receiving module can receive. The signal is forwarded.9.一种用户设备，其特征在于，包括：9. A user equipment, comprising:接收器，用于接收同步信号；a receiver for receiving synchronization signals;处理器，用于根据接收器接收到的所述同步信号占用的资源确定所述同步信号的精度，根据所述同步信号的精度确定中转同步信号的精度，根据所述中转同步信号的精度确定所述中转同步信号占用的资源；The processor is configured to determine the accuracy of the synchronization signal according to the resources occupied by the synchronization signal received by the receiver, determine the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal, and determine the accuracy of the relay synchronization signal according to the accuracy of the relay synchronization signal. The resources occupied by the above-mentioned relay synchronization signal;发送器，用于根据所述处理器确定的所述中转同步信号占用的资源发送所述中转同步信号；a transmitter, configured to send the relay synchronization signal according to the resources occupied by the relay synchronization signal determined by the processor;所述处理器具体用于：根据所述同步信号使用正交频分复用OFDM符号的个数确定所述同步信号的精度，且不同精度的同步信号占用不同的资源；The processor is specifically configured to: determine the precision of the synchronization signal according to the number of orthogonal frequency division multiplexing OFDM symbols used for the synchronization signal, and synchronization signals with different precisions occupy different resources;所述处理器具体用于：The processor is specifically used for:确定不同精度的同步信号占用不同个数的正交频分复用OFDM符号。It is determined that synchronization signals with different precisions occupy different numbers of OFDM symbols.10.根据权利要求9所述的用户设备，其特征在于，所述处理器确定的精度越高的同步信号占用的OFDM符号个数越多，精度越低的同步信号占用的OFDM符号个数越少。10 . The user equipment according to claim 9 , wherein the synchronization signal with higher precision determined by the processor occupies more OFDM symbols, and the synchronization signal with lower precision occupies more OFDM symbols. 11 . few.11.根据权利要求10所述的用户设备，其特征在于，所述处理器具体用于，当某个OFDM符号既属于接收的同步信号占用的资源集，又属于中转同步信号占用的资源集时，所述中转同步信号在所述OFDM符号上发送的内容与接收到的内容相同。The user equipment according to claim 10, wherein the processor is specifically configured to: when a certain OFDM symbol belongs to both the resource set occupied by the received synchronization signal and the resource set occupied by the relay synchronization signal , the content sent by the relay synchronization signal on the OFDM symbol is the same as the content received.12.根据权利要求9-11任一项所述的用户设备，其特征在于，所述发送器，还用于发送所述中转同步信号之后，随机变换发送中转同步信号为接收同步信号，并对接收器能够接收到的精度最高的同步信号进行转发。12. The user equipment according to any one of claims 9-11, wherein the transmitter is further configured to, after sending the relay synchronization signal, randomly convert the transmission of the relay synchronization signal into the reception synchronization signal, and to The receiver is able to receive the synchronization signal with the highest accuracy for retransmission.