CN105592523A - Device discovery apparatus and device discovery method for device-to-device communication - Google Patents
Device discovery apparatus and device discovery method for device-to-device communication Download PDFInfo
- Publication number
- CN105592523A CN105592523A CN201410564089.4A CN201410564089A CN105592523A CN 105592523 A CN105592523 A CN 105592523A CN 201410564089 A CN201410564089 A CN 201410564089A CN 105592523 A CN105592523 A CN 105592523A
- Authority
- CN
- China
- Prior art keywords
- sending
- random number
- signal
- transmission
- pattern
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a device discovery apparatus and a device discovery method for device-to-device (D2D) communication. The apparatus comprises a receiving module which is used for receiving a resource allocation parameter sent by a network side device and receiving a sending probability indication parameter sent by a network side, wherein the resource allocation parameter allocates periodical resources used for sending a D2D signal; a processing module which is used for determining whether or not to send a D2D signal in the resource cycle of the D2D signal at least according to the sending probability indication parameter, or used for determining a discovery resource cycle used for sending the D2D signal at least according to the sending probability indication parameter; and a sending module which is used for sending the D2D signal in the determined discovery resource cycle used for sending the D2D signal.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of device discovery device and side of device-to-device communicationMethod.
Background technology
Present inventor, realizing in the process of the embodiment of the present application technical scheme, at least finds correlation techniqueThe following technical problem of middle existence:
In cellular communication system, if subscriber equipment 1 and subscriber equipment 2 are at a distance of nearer, so traditionalCellular communication method based on base station access is not obviously optimum. And in fact, along with mobile communication businessVariation, for example, social networks, E-Payment etc. is applied in universal in wireless communication system, makesClosely the transmission of the business between user demand is growing. Based on this, device-to-device (D2D,Device-to-Device) communication pattern is subject to extensive concern day by day. D2D refers to that business datum is without baseStand and the forwarding of core net, be directly transferred to target UE by source user equipment by eating dishes without rice or wine, also can claimBe adjacent service (ProSe, ProximityService). For the user of short-range communication, D2DNot only save radio spectrum resources, and reduced the transfer of data pressure of core net.
In cellular communication, in the time that two UE communicate, generally UE self can not know rightThe position of side UE, but for example, set up two by network equipment (base station or equipment of the core network)The connection of UE. And for device-to-device communication, the prerequisite of setting up communication link is the phase between UEFind mutually, determine between subscriber equipment and there is contiguous relation. A kind of mode that realizes device discovery is logicalTransmission and the detection of crossing device discovery signal complete.
The problem that prior art exists comprises following content:
Because the performance of device discovery is relevant to the load of device discovery resource, such as, when device discovery resourceLoad when larger, such as sending, UE quantity is too many, therefore, may cause the collision of discovery signals to increaseAdd and cause finding hydraulic performance decline. And if the distribution of D2D discovery resource is carried out in the always larger load of hypothesis,May cause producing again the wasting of resources. In other words, how to ensure or the performance that improves device discovery is orderProblem demanding prompt solution in front correlation technique. And for other D2D signal, such as control signal or industry, also there is similar problem in business data.
Summary of the invention
In view of this, the embodiment of the present invention be desirable to provide the communication of a kind of device-to-device device discovery device andMethod, has at least solved the problems referred to above that prior art exists.
The technical scheme of the embodiment of the present invention is achieved in that
For the device-to-device communication based on cellular network relating in correlation technique, the embodiment of the present invention is carriedA kind of method for discovering equipment and device of device-to-device communication are supplied, while discovery to improve D2D communication equipmentPerformance.
The device discovery device of a kind of device-to-device communication of the embodiment of the present invention, described device comprises:
Receiver module, the resource allocation parameters sending for receiving network equipment, described resource allocation parametersDivide and be used in the periodic resources of transmitting apparatus to equipment D2D signal; And, send for receiving network sideSending probability indication parameter;
Processing module, at least determining the money at described D2D signal according to described sending probability indication parameterIn the cycle of source, whether send D2D signal, or, at least determining according to described sending probability indication parameterFor sending the discovery resource cycle of described D2D signal;
Sending module sends described D2D letter within the discovery resource cycle of determining the described D2D signal of transmissionNumber.
In such scheme, described device also comprises: random number generator, for generating random number;
Described processing module, is further used for determining whether to send according to described random number and described sending probabilityD2D signal.
In such scheme, described processing module, is further used for according to described random number and described sending probabilityDetermine whether to send in the situation of D2D signal the corresponding random number threshold of described sending probability value; RelativelyThe size of described random number and described random number threshold, in the time that described random number is less than described random number threshold,Described processing module is determined transmission D2D signal; Or, more described random number and the peaked ratio of random numberThe size of value and described probable value, in the time that described ratio is less than described probable value, described processing module is definite to be sent outSend D2D signal.
In such scheme, described processing module, is further used at least according to described sending probability indication parameterBe identified in the situation in the discovery resource cycle that sends described D2D signal, determine according to described sending probabilityCandidate's transmission pattern, and in described candidate's transmission pattern, determine a transmission pattern; According to described trueA fixed transmission pattern is identified for sending the discovery resource cycle of described D2D signal.
In such scheme, corresponding one of each described sending probability sends pattern set, each described transmission figureSample set comprises that one or more sends pattern, and described transmission pattern is used for representing that is found a resource weekPhase grouping is interior for sending the discovery resource cycle of described D2D signal; Or,
Corresponding one of each described sending probability sends pattern, and described transmission pattern is for representing to be used for sending instituteState the discovery resource cycle of D2D signal.
In such scheme, described processing module, is further used for determining in the situation of a transmission pattern, willDescribed candidate's one of transmission pattern composition sends pattern set, the random transmission pattern of selecting in described set,In wherein said set, each transmission pattern has equal selecteed probability; Or,
Described processing module, is further used for determining in the situation of a transmission pattern, by sending out of described candidateSend one of pattern composition to send pattern set, in described set, determine and send pattern according to identification information; OrPerson,
Described device also comprises random number generator, for generating random number, is determining that sends a patternIn situation, according to described random number or described random number and described sending probability selection transmission pattern; Or,Described receiver module, is further used in the situation that determining a transmission pattern, and reception network side sendsSpecial indication signaling, described special indication signaling comprises the parameter that is used to indicate transmission pattern.
In such scheme, described processing module, is further used at least according to described sending probability indication parameterBe identified in the situation in the discovery resource cycle that sends described D2D signal, determine according to described sending probabilityThe transmission cycle of D2D signal; In candidate's period migration value set, determine period migration value, described candidate's weekPhase deviant set was determined by described sending probability or described transmission cycle; According to described period migration value and instituteState the discovery resource cycle that the transmission cycle is identified for sending described D2D signal.
In such scheme, the mode of described definite period migration value comprises one or more of following mode:
Mode one: the random mode of selecting is to determine described period migration value; Wherein in described candidate offset valueEach period migration value in set has identical selected probability;
Mode two: the mode of selecting according to identification information is to determine described period migration value;
Mode three: generate random number, the mode of selecting according to described random number is to determine described period migration value.
In such scheme, described random number generator, is further used for using pseudo-random sequence to produce algorithm rawBecome random number;
Wherein, described pseudo-random sequence produces algorithm in each described resource cycle or each described transmission weekPhase or each described resource grouping generate a pseudo-random sequence; Or described pseudo-random sequence produces to be calculatedMethod is generating a pseudo-random sequence when D2D signal described in initialization;
And/or, the initiation parameter of described pseudo-random algorithm comprise following one of at least: mark, periodic key,System Frame Number, subframe/time slot index.
The method for discovering equipment of a kind of device-to-device communication of the embodiment of the present invention, described method comprises:
Receive the resource allocation parameters that network equipment sends, described resource allocation parameters is divided and is used in transmissionThe periodic resources of D2D signal;
Receive the sending probability indication parameter that network side sends;
At least whether determine within the resource cycle of described D2D signal according to described sending probability indication parameterSend D2D signal, or, be at least identified for sending described D2D according to described sending probability indication parameterThe discovery resource cycle of signal;
Within the discovery resource cycle of determining the described D2D signal of transmission, send described D2D signal.
In such scheme, describedly at least determine whether to send D2D letter according to described sending probability indication parameterNumber, comprising:
Generate random number;
Determine whether to send D2D signal according to described random number and described sending probability.
In such scheme, describedly determine whether to send D2D letter according to described random number and described sending probabilityNumber, comprising:
The corresponding random number threshold of described sending probability value; More described random number and described random number thresholdSize, in the time that described random number is less than described random number threshold, determines and send D2D signal; Or,
The size of the peaked ratio of more described random number and random number and described probable value, when described ratioWhile being less than described probable value, determining and send D2D signal.
In such scheme, be describedly at least identified for sending described D2D according to described sending probability indication parameterIn the discovery resource cycle of signal, comprising:
Determine candidate's transmission pattern according to described sending probability, and determine in described candidate's transmission patternOne sends pattern;
Be identified for sending the discovery resource week of described D2D signal according to a described definite transmission patternPhase.
In such scheme, described method also comprises:
Corresponding one of each described sending probability sends pattern set, and the set of each described transmission pattern comprisesOne or more sends pattern, described transmission pattern be used for representing one find in resource cycle grouping forSend the discovery resource cycle of described D2D signal; Or,
Corresponding one of each described sending probability sends pattern, and described transmission pattern is for representing to be used for sending instituteState the discovery resource cycle of D2D signal.
In such scheme, described definite one sends pattern, comprising:
Described candidate's one of transmission pattern composition sends pattern set, random in the set of described transmission patternSelect to send pattern, each transmission pattern has equal selecteed general in the set of wherein said transmission patternRate; Or,
Described candidate's one of transmission pattern composition sends pattern set, basis in the set of described transmission patternIdentification information is determined transmission pattern; Or,
Generate random number, according to described random number or described random number and described sending probability selection transmission figureSample; Or,
Receive the special indication signaling that network side sends, described special indication signaling comprises and is used to indicate transmissionThe parameter of pattern.
In such scheme, be describedly at least identified for sending described D2D according to described sending probability indication parameterIn the discovery resource cycle of signal, comprising:
Determine the transmission cycle of D2D signal according to described sending probability;
In candidate's period migration value set, determine period migration value, described candidate's period migration value set is by instituteStating sending probability or described transmission cycle determines;
Be identified for sending the discovery of described D2D signal according to described period migration value and described transmission cycleThe resource cycle.
In such scheme, the mode of described definite period migration value comprises one or more of following mode:
Mode one: the random mode of selecting is to determine described period migration value; Wherein in described candidate offset valueEach period migration value in set has identical selected probability;
Mode two: the mode of selecting according to identification information is to determine described period migration value;
Mode three: generate random number, the mode of selecting according to described random number is to determine described period migration value.
In such scheme, described method also comprises:
Produce algorithm according to pseudo-random sequence and generate random number;
Described pseudo-random sequence produce algorithm in each described resource cycle or each described transmission cycle orEach described resource grouping generates a pseudo-random sequence; Or, described pseudo-random sequence produce algorithm at the beginning ofStart and while sending described D2D signal, generate a pseudo-random sequence;
And/or, the initiation parameter of described pseudo-random algorithm comprise following one of at least: mark, periodic key,System Frame Number, subframe/time slot index.
The device discovery device of the device-to-device communication of the embodiment of the present invention comprises: receiver module, and for connecingReceive the resource allocation parameters that network equipment sends, described resource allocation parameters is divided to be used in and is sent D2D signalPeriodic resources; And, the sending probability indication parameter sending for receiving network side; Processing module,For at least whether determining within the resource cycle of described D2D signal according to described sending probability indication parameterSend D2D signal, or, described in being at least identified for sending according to described sending probability indication parameterThe discovery resource cycle of D2D signal; Sending module, is determining the discovery resource that sends described D2D signalIn cycle, send described D2D signal.
Adopt the embodiment of the present invention, the transmission problem of D2D signal can solve device-to-device communication time, therebyEnsure or improve the performance of device discovery, and adopt the embodiment of the present invention can also reach while controlling discoveryThe object of prolonging, avoids the problem of hour discovery time delay that appearance is larger of probability of detection.
Brief description of the drawings
Fig. 1 is cellular deployment schematic diagram in correlation technique;
Fig. 2 is a realization flow schematic diagram of the inventive method embodiment;
Fig. 3 is a composition structural representation of apparatus of the present invention embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the enforcement of technical scheme is described in further detail.
For making the object, technical solutions and advantages of the present invention clearer, below in connection with accompanying drawing to thisInvention technical scheme is described in further detail. It should be noted that, in the situation that not conflicting, the applicationIn embodiment and the feature in embodiment can mutually combine.
The techniques described herein are applicable to cellular radio Communication system or network. Common cellular radio Communication systemSystem can be based on CDMA (CDMA, CodeDivisionMultiplexingAccess) technology, frequency divisionMultiple access (FDMA, FrequencyDivisionMultiplexingAccess) technology, OFDM(OFDMA, Orthogonal-FDMA) technology, single-carrier frequency division multiple access (SC-FDMA, SingleCarrier-FDMA) technology etc. For example, the third generation communication technology (3GPP, 3rdGenerationPartnershipProject) Long Term Evolution (LTE, LongTermEvolution)/senior Long Term Evolution (LTE-A,LTE-Advanced), cellular communication system downlink (or being called forward link) is based on OFDMA skillArt, up-link (or being called reverse link) is based on SC-FDMA multiple access technology. Likely exist futureOn a link, support the multiple access technology mixing.
In OFDMA/SC-FDMA system, for the Radio Resource (RadioResource) of communicating by letter beThe form of time-frequency bidimensional. For example, for LTE/LTE-A system, the communication of uplink and downlink linkResource is all to divide taking radio frames (radioframe) as unit on time orientation, each radio frames (radioFrame) length is 10ms, comprises the subframe that 10 length are 1ms (sub-frame), each subframe bagDrawing together length is two time slots (slot) of 0.5ms, as shown in Figure 1. And according to Cyclic Prefix (CyclicPrefix,CP) configuration difference, each time slot can comprise 6 or 7 OFDM or SC-FDM symbol.
In frequency direction, resource is divided taking subcarrier (subcarrier) as unit, specifically in communication, frequentlyThe least unit that territory resource is distributed is RB (ResourceBlock, Resource Block), of corresponding physical resourcePRB (PhysicalRB, Physical Resource Block). A PRB comprises 12 subcarriers (sub-carrier) at frequency domain,Corresponding to a time slot (slot) of time domain. In subframe, two adjacent PRB of time domain are called PRB to (PRBPair). On each OFDM/SC-FDM symbol, the resource of a corresponding subcarrier is called resource element(ResourceElement，RE)。
Figure 1 shows that the network design schematic diagram of cellular radio Communication system in correlation technique. In Fig. 1, canTo be 3GPPLTE/LTE-A system, or other cellular radio Communication technology. At cellular radio CommunicationIn the Access Network of system, the network equipment generally comprises the base station (basestation, or be called of someNode B, NodeB, or the Node B of evolution, evolvedNodeB, eNB, or the node strengtheningB (eNB, enhancedNodeB), and other network entity (networkentity) or network listUnit (networkelement). Or, in short, in 3GPP, also can be referred to as network sideUniversal terrestrial access network (E-UTRAN, the EvolvedUniversalTerrestrialRadio of evolutionAccessNetwork). Here said base station also comprises low power nodes (LPN, the Low in networkPowerNode), and for example Femto cell or Home eNodeB (pico, Relay, femto, HeNB is HomeENB etc.) etc., also can unite and be called small-cell (smallcell). Simple for describing, in Fig. 1, only show3 base stations. Base station provides certain wireless signal coverage, terminal in this coverage (terminal,Or be called subscriber equipment, UserEquipment, UE, or device) can carry out nothing with this base stationLine communication. The wireless signal overlay area of a base station may based on some criterion be divided into one orMultiple community cell or sector sector, for example may Shi Sange community.
Device discovery is the key technology in D2D communication, and first the UE that carries out D2D communication needs realityNow mutual discovery, the discovery or the D2D that are called D2D communication herein find or device discovery. HereinIn, device discovery is real by transmission and the detection of discovery signals (DiscoverySignal) between subscriber equipmentExisting. In embodiment described in the invention, discovery signals comprises message (message) part, Ke YishiThe packet of physical layer, or a MAC (MediumAccessControl, medium Access Control)PDU (ProtocolDataUnit, protocol Data Unit), etc.
In device-to-device communication, the number of users that participation device is found may fluctuate. Such asSome time period, when number of users is larger, the number of users that participation device is found may be also more; And at otherThe number of users that some time period participation devices are found may be fewer. When participation device find number of usersWhen many, the conflict of discovery signals likely can increase, thereby causes finding hydraulic performance decline.
In view of this, the embodiment of the present invention has proposed a kind of method for discovering equipment of device-to-device communication, asShown in Fig. 2, comprising:
The resource allocation parameters that step 101, reception network equipment send, described resource allocation parameters is distributedFor sending the periodic resources of D2D signal;
The sending probability indication parameter that step 102, reception network side send;
Step 103, at least determine the resource week at described D2D signal according to described sending probability indication parameterIn phase, whether send D2D signal, or, be at least identified for sending according to described sending probability indication parameterThe discovery resource cycle of described D2D signal;
Step 104, in discovery resource cycle of described D2D signal, send described D2D letter determining to sendNumber.
Wherein, described network equipment can be base station; Described resource allocation parameters can be high-level signalingOr physical layer signaling, sends by the form of broadcast or dedicated signaling; Sending probability is between 0 and 1Between decimal, can equal 0 or equal 1, equal 0 and mean and do not send discovery signals, equal 1Mean that subscriber equipment sends discovery signals in each discovery resource cycle. In specific implementation, can be pre-The sending probability set of a discovery signals of definition, network equipment is according to finding the factor such as resource load,In this Making by Probability Sets, select a sending probability as discovery signals. Such as, sending probability set comprises{ 0.25,0.5,0.75,1}, network equipment can be selected 1 discovery signals that is configured to its subordinate communitySending probability.
In one embodiment, at least determine at described D2D signal according to described sending probability indication parameterIn the resource cycle of (discovery signals), whether sending D2D signal comprises: generate random number; Random according to thisNumber and sending probability determine whether to send discovery signals.
The length (in the time that described random number is 2 system sequence) of the described random number that further, agreement generatesOr the scope of described random number. This random number can generate based on specific random number algorithm. When what generateWhen random number is 2 system sequence, can arrange the length of this 2 system sequence. Such as its length of agreement is 10,It is 0-1023 that the 2 system random numbers that generate are so converted into its scope after 10 systems, comprise 1024 wholeNumber. Or the random number of generation can be also the decimal between 0-1. Or, the random number of generationAlso can be other scope.
Further, the scope of the random number generating according to the random digit generation method of this agreement, Yi JifaSend probability, be identified for judging whether to send the threshold value of D2D discovery signals. Such as the random number range generatingFor 0-A, A is greater than 0 real number (such as being positive integer), and sending probability is P, and this sending threshold value canTo calculate by following formula: Thres=A*P. When the random number generating, to be less than this sending threshold value Thres (or littleIn equaling this sending threshold value Thres) time, subscriber equipment sends discovery signals. Than random number range described aboveFor 0-1, the sending threshold value of definite D2D discovery signals is identical with sending probability, such as sending probability is0.75 o'clock, if the random number generating was less than for 0.75 (or being less than or equal to 0.75), sends D2D and findSignal, otherwise do not send.
In the time that random number is 2 system sequence, can determine described D2D according to random number number and sending probabilityThe sending threshold value of discovery signals. In above-mentioned example, random number is that length is 10 2 system sequences,Generate all possible situations of random number have 1024 (0000000000,0000000001,0000000010 ..., 1111111111), can determine that described sending threshold value is Thres=1024*P, whereinP is sending probability, and Thres is sending threshold value. In the time that 1024*P is not integer, can be to operation result fourHouse five enters, or rounds up, or rounds downwards. For subscriber equipment, when determining whether to sendWhen D2D discovery signals, generate random number and be translated into 10 systems, then with described sending threshold value ratio, in the time that it is less than sending threshold value (or being less than or equal to sending threshold value), send discovery signals. Such as,Sending probability be when 0.25,0.5,0.75,1}, and its corresponding sending threshold value be respectively 256,512,768,1024}。
In one embodiment, described in being at least identified for sending according to described sending probability indication parameterIn the discovery resource cycle of D2D signal, comprising: determine candidate's transmission pattern according to described sending probability, andIn described candidate's transmission pattern, determine one and send pattern; True according to a described definite transmission patternFixed for sending the discovery resource cycle of described D2D signal.
In one embodiment, further, corresponding one of each sending probability sends pattern set, instituteState the set of each transmission pattern and comprise that one or more sends pattern, described transmission pattern is used for representing oneIndividual discovery resource cycle grouping is interior for sending the discovery resource cycle of described D2D signal.
Further, described transmission pattern was illustrated in specific continuous discovery resource cycle, for sendingThe discovery resource cycle of D2D discovery signals. Send the shared ratio of resource cycle that sends discovery signals in patternRate consistent with sending probability (or basically identical). Such as, sending probability is 0.25 o'clock, its correspondence send outSend and in pattern, have discovery resource cycle of 25% be marked as the cycle for sending discovery signals; Sending probabilityBe 0.5 o'clock, in the transmission pattern of its correspondence, have discovery resource cycle of 50% to be marked as for sending discoveryThe cycle of signal; Sending probability is 0.75 o'clock, has 75% discovery resource cycle in the transmission pattern of its correspondenceBe marked as the cycle for sending discovery signals.
Such as the sending probability for 0.25, the transmission pattern that the transmission pattern set of its correspondence comprises has1000,0100,0010,0001}, wherein sends 1 expression in pattern and sends discovery signals, and 0 represents not send,Be illustrated in 4 continuous discovery resource cycles such as 1000, find in the resource cycle for therein the 1stSend discovery signals, in 3 discovery resource cycles thereafter, do not send discovery signals, like this for userEquipment, its accounting that sends the discovery resource cycle of discovery signals is 25%, identical with sending probability.Other implications that send pattern are similar. Based on this, also can similar definite transmission figure for other sending probabilitySample. Such as, sending probability is 0.5 o'clock, can predefine send pattern 10,01} or{ 0011,0101,0110,1001,1010,1100}; Sending probability is 0.75 o'clock, can predefine transmission pattern to be0111,1011,1101,1110}, etc.
Further, the initial of described specific continuous discovery resource cycle can be true by subscriber equipment oneselfFixed, different subscriber equipmenies is for the initial hypothesis difference in specific continuous discovery resource cycle; OrPerson, the predefined mode of initial employing in described specific continuous discovery resource cycle determines, such as from joiningPut beginnings that come into force of configuration signal that described discovery finds resource, determine described specific find the resource cycleBegin, such as from described configuration signal comes into force, find that the resource cycle is 1 group for specific, to described discoveryThe resource cycle divides into groups continuously, corresponding 1 group of discovery resource week of finding in the resource cycle of described transmission patternPhase. Or determine according to System Frame Number (SystemFrameNumber, SFN) initial, such as from numberingBe that 0 SFN starts, find that the resource cycle is one and finds resource periodic groups for every continuous specific.
Or the indication signaling configuring by network side determines that described specific (such as n) finds continuouslyResource cycle initial. Such as network side sends configuration parameter a_start, a_start has the value model of agreementEnclose. Determine and describedly specific find that continuously the initial of resource cycle refer to according to this a_start, according to modThe value of (a_start, n), determines that the current discovery resource cycle is n the continuous position of finding in the resource cycle,Wherein mod represents modulo operation. Such as n=4 and mod (a_start, n)=3, represent subscriber equipment receiptsAnd then or there is corresponding n of discovery resource cycle (this example of certain intervals after this configuration signal arriving,In be 4) in continuous discovery resource group the 3rd.
Further, subscriber equipment, according to sending probability and corresponding discovery resource pattern thereof, is determined oneSend pattern. The mode of determining transmission pattern can be one of following mode: random in the set of transmission patternSelect to send pattern, in wherein said set, each transmission pattern has equal selecteed probability; Or,In described candidate's transmission pattern set, determine and send pattern according to identification information; Or, generate random number,According to this random number or this random number and described sending probability selection transmission pattern; Or, receive network sideThe special indication signaling sending, described special indication signaling comprises the parameter that is used to indicate transmission pattern.
Wherein, in described candidate's transmission pattern set, determine and send pattern according to identification information (ID),Such as under configured sending probability, candidate's transmission pattern comprises that m sends pattern, its index markKnowledge is 0,1 ... m-1, determined transmission drawing indexing i=mod (ID, m), mod represents delivery fortuneCalculate. Wherein, described identification information can be the mark of subscriber equipment, such as IMSI (InternationalMobileSubscriberIdentity) the part field or in IMSI.
Wherein, generate random number, according to this random number or this random number and described sending probability selection transmissionPattern, such as generating random parameter RAND according to Generating Random Number, under configured sending probability,Candidate's transmission pattern comprises that m sends pattern, and its index is designated 0,1 ... m-1, determinedSend drawing indexing i=mod (ID, m), mod represents modulo operation, and m definition is same as described above.
Wherein, receive the special indication signaling that network equipment sends, described special indication signaling comprises useSend the parameter of pattern in instruction, such as base station sends and is used to indicate uses transmission pattern to subscriber equipmentParameter, subscriber equipment is determined the resource period position that sends discovery signals according to this parameter. Base station can be directInstruction pattern (such as probability is one of 0.25 o'clock above-mentioned 4 pattern mentioning), or the rope of instruction patternDraw.
In another embodiment, further, corresponding one of each sending probability sends pattern, described inSend pattern for representing that one is found in the grouping of resource cycle for sending the discovery money of described D2D signalThe source cycle.
Further, described transmission pattern was illustrated in specific continuous discovery resource cycle, for sendingThe discovery resource cycle of D2D discovery signals. Send the shared ratio of resource cycle that sends discovery signals in patternRate consistent with sending probability (or basically identical). Such as, sending probability is 0.25 o'clock, its correspondence send outSend and in pattern, have discovery resource cycle of 25% be marked as the cycle for sending discovery signals; Sending probabilityBe 0.5 o'clock, in the transmission pattern of its correspondence, have discovery resource cycle of 50% to be marked as for sending discoveryThe cycle of signal; Sending probability is 0.75 o'clock, has 75% discovery resource cycle in the transmission pattern of its correspondenceBe marked as the cycle for sending discovery signals.
Such as, sending probability is 0.25 o'clock, predefined transmission pattern is 0001, wherein sends in pattern 1Represent to send discovery signals, 0 represents not send, and is illustrated in 4 continuous discovery resource cycles such as 0001In, find to send discovery signals in the resource cycle for therein the 4th, in 3 discovery resource weeks beforeThe interim discovery signals that do not send, like this for subscriber equipment, it sends the discovery resource week of discovery signalsThe accounting of phase is 1/4, identical with sending probability. Other implications that send pattern are similar. Certainly sending probability,Be 0.25 o'clock, sending pattern can be also 1000, or 0100, or 0010, etc. Send patternLength also can not be defined as 4. Based on this, also can similar definite transmission pattern for other sending probability.Such as, sending probability is 0.5 o'clock, can predefine and send pattern is 10 or 01, or 0011, or0101, or 0110, or 1001, or 1010, or, 1100}; Sending probability is 0.75 o'clock,Can predefine and send pattern is one of following 4 patterns: and 0111,1011,1101,1110}, or other are longThe transmission pattern of degree, etc.
Further, the initial of described specific continuous discovery resource cycle can be true by subscriber equipment oneselfFixed, different subscriber equipmenies may be different for the initial hypothesis in specific continuous discovery resource cycle.The cycle that starts to send D2D discovery signals such as, subscriber equipment is defined as specific continuous discovery resource weekPhase initial. Such as sending probability is that 0.25 o'clock corresponding discovery signals transmission resource pattern is 0001, useFamily equipment, from section start, taking 4 continuous discovery resource cycles as unit, is sent out for therein first 3In the existing resource cycle, do not send discovery signals, find to send discovery signals in the resource cycle at the 4th.
In one embodiment, described in being at least identified for sending according to described sending probability indication parameterIn the discovery resource cycle of D2D signal, comprising: the transmission week of determining D2D signal according to described sending probabilityPhase; In candidate's period migration value set, determine period migration value, described candidate's period migration value set is by instituteStating sending probability or described transmission cycle determines; Determine use according to described period migration value and described transmission cycleIn the discovery resource cycle that sends described D2D signal; The method of wherein said definite period migration value comprise withUnder one of at least: select at random, wherein the each period migration value in described candidate offset value set hasIdentical selected probability; Select according to identification information; Generate random number, determine institute according to described random numberState period migration value.
Further, UE determines that according to sending probability the transmission cycle refers to, the transmission cycle (Period_Tx)The multiple of resource cycle (Period_R), Period_Tx=Period_R/P, P is sending probability. Such as,The sending probability of configuration is 0.25, and the transmission cycle is 4 times of resource cycle so, i.e. every 4 resource cyclesIn have 1 transmission cycle for sending discovery signals; Sending probability is 0.5 o'clock, and the transmission cycle is resource week2 times of phase, i.e. have 1 transmission cycle for sending discovery signals in every 2 resource cycles.
Further, determine and send all after dates, further determine the resource cycle of concrete transmission discovery signals.While being found such as UE the demand that signal sends, send discovery signals since the 1st resource cycle, asFruit probability is 0.25, sends discovery signals every all after dates of 3 resources, if probability is, at 0.5 o'clock againSend again discovery signals every all after dates of 1 resource. Or, a skew (offset) can be set, skewSpan be 0～N-1, N=1/P. This deviant can be selected at random by UE, or according to mark letterBreath is selected (description of identification information is as aforementioned), or selects deviant according to the random number generating.
In one embodiment, propose a kind of random digit generation method, comprising: use pseudo-random sequence to produceRaw algorithm generates random number; Described pseudo-random sequence produces algorithm in each described resource cycle or each instituteState transmission cycle or a pseudo-random sequence of each described resource grouping generation; Or, described pseudorandom orderRow produce algorithm generating a pseudo-random sequence described in initialization when D2D signal. Wherein, pseudorandom is calculatedMethod can adopt the pseudo random sequence generation method defining in LTE agreement, or other pseudo-random sequence is rawOne-tenth method.
Further, the initiation parameter that generates described pseudo-random sequence comprise following one of at least: mark letterBreath, periodic key, System Frame Number, subframe/time slot index. Wherein, identification information can be to use as the aforementionedFamily device identification; Periodic key is to find the index in the transmission cycle of resource cycle or discovery signals.
Further, periodic key can be counted in the time that subscriber equipment starts to send discovery signals, since 0;Or periodic key can circulate, such as comprising K numbering, index is from 0 to K-1, Yong HusheStandby while starting to send discovery signals since 0 counting, after K-1, return 0 beginning; Or, or,Periodic key can circulate, and such as comprising K numbering, index is from 0 to K-1, and this index value is by netNetwork side apparatus is such as base station configures, and subscriber equipment receives after the configuration signal that is used to indicate this index value, opensBegin according to this value, periodic key to be counted.
The embodiment of the present invention has also proposed a kind of device discovery device of device-to-device communication, as shown in Figure 3,Comprise:
Receiver module, the resource allocation parameters sending for receiving network equipment, described resource allocation parametersDivide and be used in the periodic resources of transmitting apparatus to equipment D2D signal; And, send for receiving network sideSending probability indication parameter;
Processing module, at least determining the money at described D2D signal according to described sending probability indication parameterIn the cycle of source, whether send D2D signal, or, at least determining according to described sending probability indication parameterFor sending the discovery resource cycle of described D2D signal;
Sending module sends described D2D letter within the discovery resource cycle of determining the described D2D signal of transmissionNumber.
In the embodiment of the present invention one embodiment, described device also comprises: random number generator, and for lifeBecome random number;
Described processing module, is further used for determining whether to send according to described random number and described sending probabilityD2D signal.
In the embodiment of the present invention one embodiment, described processing module, is further used for according to described randomSeveral and described sending probability determines whether to send in the situation of D2D signal, corresponding one of described sending probability valueRandom number threshold; The size of more described random number and described random number threshold, when described random number is less than instituteWhile stating random number threshold, described processing module is determined transmission D2D signal; Or, more described random number withThe size of the peaked ratio of random number and described probable value, in the time that described ratio is less than described probable value, instituteState processing module and determine transmission D2D signal.
In the embodiment of the present invention one embodiment, described processing module, be further used at least according to described inSending probability indication parameter is identified in the situation in the discovery resource cycle that sends described D2D signal, according toDescribed sending probability is determined candidate's transmission pattern, and determines a transmission in described candidate's transmission patternPattern; Be identified for sending the discovery resource week of described D2D signal according to a described definite transmission patternPhase.
In the embodiment of the present invention one embodiment, corresponding one of each described sending probability sends pattern set,The set of each described transmission pattern comprises that one or more sends pattern, and described transmission pattern is for representingFind in the grouping of resource cycle for sending the discovery resource cycle of described D2D signal for one; Or,
Corresponding one of each described sending probability sends pattern, and described transmission pattern is for representing to be used for sending instituteState the discovery resource cycle of D2D signal.
In the embodiment of the present invention one embodiment, described processing module, is further used for determining a transmissionIn the situation of pattern, described candidate's one of transmission pattern composition is sent to pattern set, in described setThe random transmission pattern of selecting, in wherein said set, each transmission pattern has equal selecteed probability;Or,
Described processing module, is further used for determining in the situation of a transmission pattern, by sending out of described candidateSend one of pattern composition to send pattern set, in described set, determine and send pattern according to identification information; OrPerson,
Described device also comprises random number generator, for generating random number, is determining that sends a patternIn situation, according to described random number or described random number and described sending probability selection transmission pattern; Or,Described receiver module, is further used in the situation that determining a transmission pattern, and reception network side sendsSpecial indication signaling, described special indication signaling comprises the parameter that is used to indicate transmission pattern.
In the embodiment of the present invention one embodiment, described processing module, be further used at least according to described inSending probability indication parameter is identified in the situation in the discovery resource cycle that sends described D2D signal, according toDescribed sending probability is determined the transmission cycle of D2D signal; In candidate's period migration value set, determine that the cycle is inclined to one sideThe value of moving, described candidate's period migration value set was determined by described sending probability or described transmission cycle; According to instituteState the discovery resource cycle that period migration value and described transmission cycle are identified for sending described D2D signal.
In the embodiment of the present invention one embodiment, the mode of described definite period migration value comprises following modeOne or more:
Mode one: the random mode of selecting is to determine described period migration value; Wherein in described candidate offset valueEach period migration value in set has identical selected probability;
Mode two: the mode of selecting according to identification information is to determine described period migration value;
Mode three: generate random number, the mode of selecting according to described random number is to determine described period migration value.
In the embodiment of the present invention one embodiment, described random number generator, be further used for using pseudo-withMachine sequence generation algorithm generates random number;
Wherein, described pseudo-random sequence produces algorithm in each described resource cycle or each described transmission weekPhase or each described resource grouping generate a pseudo-random sequence; Or described pseudo-random sequence produces to be calculatedMethod is generating a pseudo-random sequence when D2D signal described in initialization;
And/or, the initiation parameter of described pseudo-random algorithm comprise following one of at least: mark, periodic key,System Frame Number, subframe/time slot index.
For a concrete scene of application the invention described above embodiment, in correlation technique, relate to a kind of generalRate sends the scheme of discovery signals, and described probability sends and refers to, when UE sends discovery signals, sends out based on oneSend probability to determine whether to send discovery signals. Ratio as discussed candidate's sending probability comprises { 0.25,0.5,0.75,1}.Sending probability is less than at 1 o'clock, means that UE sends to find letter in each discovery cycleNumber.
For sending discovery signals based on sending probability, how scheme specifically realizes, such as UE howDetermine whether to send discovery signals based on probable value does not come into question always. Application the invention described above embodiment,At least can provide following three kinds of concrete schemes based on probability transmission discovery signals as follows:
Scheme 1:
Generate random number by Generating Random Number, and determine based on this random number and the probability that configures and beNo transmission discovery signals.
The binary system random number length of hypotheses creation is 10, the random number range 0-1023 generating. According to existingSupport discovery sending probability value (p={0.25,0.5,0.75,1}), in 0-1023, get probability 0.25,The percentile point of 0.5 and 0.75 correspondence, 255,511 and 767. If the sending probability of configuration is0.25, by the random number generating and 255 relatively, if be not more than 255, send D2D signal; NoDo not send. In like manner, if the sending probability of configuration is 0.75, by the random number generating and 767 relatively,If be not more than 767, send discovery signals; Otherwise do not send.
In scheme, also comprise generation and the using method of random number.
Scheme 2:
Strictly control the transmission times of discovery signals according to sending probability. Such as the sending probability of configuration is 0.75,UE just selects 3 discovery cycles in every 4 discovery cycles so, sends 3 discoveriesSignal.
Such as the discovery cycle is divided into groups. Can divide into groups according to the probability of configuration, such as probabilityBe 0.25 and 0.75 o'clock, 4 continuous discovery cycles are divided into 1 group; Probability is 0.5 o'clock, will2 continuous discovery cycles are divided into 1 group. Or grouping can be also no matter how probability is unifiedDivide into groups, such as 4 continuous discovery cycles are divided into 1 group. Here 4 continuous discoveryCycle, as one group, can be common, such as rising according to discovery cycle size, SFN0Begin to determine grouping; Or grouping can be also UE-specific, UE is from starting to send discovery signalsCycle start to carry out discovery cycle grouping.
Determine which cycle transmission discovery signals can be by the transmission pattern of agreement. Such as probability is 0.25 o'clock,UE sends cycle of discovery signals and is respectively [0231], taking 4 continuous discovery resource cycles asA grouping, in 4 continuous resource groupings, respectively the 0th, 2,3 and 1 discovery cyclesInterior transmission discovery signals.
Or definition sends pattern. Such as, transmission pattern when 0.25 sending probability be 1000,0100,0010 and 0001, in each resource grouping (4 cycles), UE selects to send pattern at random, such asThe transmission resource pattern of selecting is 0010 o'clock, and UE sent and sends out in the 3rd the resource cycle in resource groupingExisting signal. Sending probability be the transmission pattern of 0.5 o'clock comprise 1100,1010,1001,0110,0101,0011; Sending probability is that the transmission pattern of 0.75 o'clock is 1110,1101,1011,0111.
Scheme 3:
Strictly control the transmission times of discovery signals according to sending probability. Such as the sending probability of configuration is 0.75,UE just selects 3 discovery cycles in every 4 discovery cycles so, sends 3 discoveriesSignal.
In this scheme, UE determines the transmission cycle according to sending probability, wherein sends the cycle (Period_Tx)The multiple of resource cycle (Period_R), Period_Tx=Period_R/Prob, Prob is sending probability.Such as, the sending probability of configuration is 0.25, the transmission cycle is 4 times of resource cycle so; Sending probability is0.5 o'clock, the transmission cycle was 4 times of resource cycle; Sending probability is 0.75 o'clock, directly according to the method described aboveThe transmission cycle of calculating is not integer, cannot obtain the transmission cycle of strictly following transmission times. If singleThis scheme of pure employing, cannot support 0.75 this probable value.
Determine and send all after dates, can select at random offset to determine the resource of concrete transmission discovery signalsPeriod position.
If module integrated described in the embodiment of the present invention realizes also as independent using the form of software function moduleProduction marketing or use time, also can be stored in a computer read/write memory medium. Based on like thisUnderstanding, the part that the technical scheme of the embodiment of the present invention contributes to prior art in essence in other words canEmbody with the form with software product, this computer software product is stored in a storage medium, bagDrawing together some instructions (can be personal computer, server or network in order to make a computer equipmentEquipment etc.) carry out all or part of of method described in the present invention each embodiment. And aforesaid storage medium bagDraw together: USB flash disk, portable hard drive, read-only storage (ROM, Read-OnlyMemory), arbitrary access are depositedReservoir (RAM, RandomAccessMemory), magnetic disc or CD etc. are various can storage program generationThe medium of code. Like this, the embodiment of the present invention is not restricted to any specific hardware and software combination.
Accordingly, the embodiment of the present invention also provides a kind of computer-readable storage medium, wherein stores computer journeyOrder, the device discovery side that this computer program is communicated by letter for carrying out a kind of device-to-device of the embodiment of the present inventionMethod.
The above, be only preferred embodiment of the present invention, is not intended to limit protection model of the present inventionEnclose.
Claims (18)
1. a device discovery device for device-to-device communication, is characterized in that, described device comprises:
Receiver module, the resource allocation parameters sending for receiving network equipment, described resource allocation parametersDivide and be used in the periodic resources of transmitting apparatus to equipment D2D signal; And, send for receiving network sideSending probability indication parameter;
Processing module, at least determining the money at described D2D signal according to described sending probability indication parameterIn the cycle of source, whether send D2D signal, or, at least determining according to described sending probability indication parameterFor sending the discovery resource cycle of described D2D signal;
Sending module sends described D2D letter within the discovery resource cycle of determining the described D2D signal of transmissionNumber.
2. device according to claim 1, is characterized in that, described device also comprises: random number is rawGrow up to be a useful person, for generating random number;
Described processing module, is further used for determining whether to send according to described random number and described sending probabilityD2D signal.
3. device according to claim 2, is characterized in that, described processing module, is further used forDetermine whether to send in the situation of D2D signal according to described random number and described sending probability, described transmission is generalThe corresponding random number threshold of rate value; The size of more described random number and described random number threshold, when describedWhen random number is less than described random number threshold, described processing module is determined transmission D2D signal; Or, relativelyThe size of the peaked ratio of described random number and random number and described probable value, described in described ratio is less thanWhen probable value, described processing module is determined transmission D2D signal.
4. device according to claim 1, is characterized in that, described processing module, is further used forAt least be identified for sending the discovery resource cycle of described D2D signal according to described sending probability indication parameterSituation under, determine candidate's transmission pattern according to described sending probability, and at described candidate's transmission patternIn determine one send pattern; Be identified for sending described D2D letter according to a described definite transmission patternNumber the discovery resource cycle.
5. device according to claim 4, is characterized in that, corresponding one of each described sending probabilitySend pattern set, the set of each described transmission pattern comprises that one or more sends pattern, describedSend pattern for representing that one is found in the grouping of resource cycle for sending the discovery resource of described D2D signalCycle; Or,
Corresponding one of each described sending probability sends pattern, and described transmission pattern is for representing to be used for sending instituteState the discovery resource cycle of D2D signal.
6. device according to claim 4, is characterized in that, described processing module, is further used forDetermine in the situation of a transmission pattern, described candidate's one of transmission pattern composition sent to pattern set,The random transmission pattern of selecting in described set, in wherein said set, each transmission pattern has equal quiltThe probability of selecting; Or,
Described processing module, is further used for determining in the situation of a transmission pattern, by sending out of described candidateSend one of pattern composition to send pattern set, in described set, determine and send pattern according to identification information; OrPerson,
Described device also comprises random number generator, for generating random number, is determining that sends a patternIn situation, according to described random number or described random number and described sending probability selection transmission pattern; Or,Described receiver module, is further used in the situation that determining a transmission pattern, and reception network side sendsSpecial indication signaling, described special indication signaling comprises the parameter that is used to indicate transmission pattern.
7. device according to claim 1, is characterized in that, described processing module, is further used forAt least be identified for sending the discovery resource cycle of described D2D signal according to described sending probability indication parameterSituation under, determine transmission cycle of D2D signal according to described sending probability; At candidate's period migration value collectionIn closing, determine period migration value, described candidate's period migration value set is by described sending probability or described transmission weekPhase is determined; Be identified for sending sending out of described D2D signal according to described period migration value and described transmission cycleThe existing resource cycle.
8. device according to claim 7, is characterized in that, the mode of described definite period migration valueComprise one or more of following mode:
Mode one: the random mode of selecting is to determine described period migration value; Wherein in described candidate offset valueEach period migration value in set has identical selected probability;
Mode two: the mode of selecting according to identification information is to determine described period migration value;
Mode three: generate random number, the mode of selecting according to described random number is to determine described period migration value.
9. according to the device described in claim 2,6,7 or 8, it is characterized in that, described random number generatesDevice, is further used for using pseudo-random sequence to produce algorithm and generates random number;
Wherein, described pseudo-random sequence produces algorithm in each described resource cycle or each described transmission weekPhase or each described resource grouping generate a pseudo-random sequence; Or described pseudo-random sequence produces to be calculatedMethod is generating a pseudo-random sequence when D2D signal described in initialization;
And/or, the initiation parameter of described pseudo-random algorithm comprise following one of at least: mark, periodic key,System Frame Number, subframe/time slot index.
10. a method for discovering equipment for device-to-device communication, is characterized in that, described method comprises:
Receive the resource allocation parameters that network equipment sends, described resource allocation parameters is divided and is used in transmissionThe periodic resources of D2D signal;
Receive the sending probability indication parameter that network side sends;
At least whether determine within the resource cycle of described D2D signal according to described sending probability indication parameterSend D2D signal, or, be at least identified for sending described D2D according to described sending probability indication parameterThe discovery resource cycle of signal;
Within the discovery resource cycle of determining the described D2D signal of transmission, send described D2D signal.
11. methods according to claim 10, is characterized in that, described at least general according to described transmissionRate indication parameter determines whether to send D2D signal, comprising:
Generate random number;
Determine whether to send D2D signal according to described random number and described sending probability.
12. methods according to claim 11, is characterized in that, described according to described random number and instituteState sending probability and determine whether to send D2D signal, comprising:
The corresponding random number threshold of described sending probability value; More described random number and described random number thresholdSize, in the time that described random number is less than described random number threshold, determines and send D2D signal; Or,
The size of the peaked ratio of more described random number and random number and described probable value, when described ratioWhile being less than described probable value, determining and send D2D signal.
13. methods according to claim 10, is characterized in that, described at least general according to described transmissionRate indication parameter is identified for sending the discovery resource cycle of described D2D signal, comprising:
Determine candidate's transmission pattern according to described sending probability, and determine in described candidate's transmission patternOne sends pattern;
Be identified for sending the discovery resource week of described D2D signal according to a described definite transmission patternPhase.
14. methods according to claim 13, is characterized in that, described method also comprises:
Corresponding one of each described sending probability sends pattern set, and the set of each described transmission pattern comprisesOne or more sends pattern, described transmission pattern be used for representing one find in resource cycle grouping forSend the discovery resource cycle of described D2D signal; Or,
Corresponding one of each described sending probability sends pattern, and described transmission pattern is for representing to be used for sending instituteState the discovery resource cycle of D2D signal.
15. methods according to claim 13, is characterized in that, described definite one sends pattern,Comprise:
Described candidate's one of transmission pattern composition sends pattern set, random in the set of described transmission patternSelect to send pattern, each transmission pattern has equal selecteed general in the set of wherein said transmission patternRate; Or,
Described candidate's one of transmission pattern composition sends pattern set, basis in the set of described transmission patternIdentification information is determined transmission pattern; Or,
Generate random number, according to described random number or described random number and described sending probability selection transmission figureSample; Or,
Receive the special indication signaling that network side sends, described special indication signaling comprises and is used to indicate transmissionThe parameter of pattern.
16. methods according to claim 10, is characterized in that, described at least general according to described transmissionRate indication parameter is identified for sending the discovery resource cycle of described D2D signal, comprising:
Determine the transmission cycle of D2D signal according to described sending probability;
In candidate's period migration value set, determine period migration value, described candidate's period migration value set is by instituteStating sending probability or described transmission cycle determines;
Be identified for sending the discovery of described D2D signal according to described period migration value and described transmission cycleThe resource cycle.
17. methods according to claim 16, is characterized in that, the side of described definite period migration valueFormula comprises one or more of following mode:
Mode one: the random mode of selecting is to determine described period migration value; Wherein in described candidate offset valueEach period migration value in set has identical selected probability;
Mode two: the mode of selecting according to identification information is to determine described period migration value;
Mode three: generate random number, the mode of selecting according to described random number is to determine described period migration value.
18. according to the method described in claim 11,15,16 or 17, it is characterized in that described methodAlso comprise:
Produce algorithm according to pseudo-random sequence and generate random number;
Described pseudo-random sequence produce algorithm in each described resource cycle or each described transmission cycle orEach described resource grouping generates a pseudo-random sequence; Or, described pseudo-random sequence produce algorithm at the beginning ofStart and while sending described D2D signal, generate a pseudo-random sequence;
And/or, the initiation parameter of described pseudo-random algorithm comprise following one of at least: mark, periodic key,System Frame Number, subframe/time slot index.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564089.4A CN105592523A (en) | 2014-10-21 | 2014-10-21 | Device discovery apparatus and device discovery method for device-to-device communication |
| PCT/CN2015/084907 WO2016062138A1 (en) | 2014-10-21 | 2015-07-23 | Apparatus and method for device discovery in device-to-device communications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564089.4A CN105592523A (en) | 2014-10-21 | 2014-10-21 | Device discovery apparatus and device discovery method for device-to-device communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105592523A true CN105592523A (en) | 2016-05-18 |
Family
ID=55760249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410564089.4A Withdrawn CN105592523A (en) | 2014-10-21 | 2014-10-21 | Device discovery apparatus and device discovery method for device-to-device communication |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105592523A (en) |
| WO (1) | WO2016062138A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162737A (en) * | 2016-08-09 | 2016-11-23 | 北京交通大学 | A kind of D2D equipment autonomously based on adaptive congestion control finds method |
| WO2017206560A1 (en) * | 2016-05-31 | 2017-12-07 | 中兴通讯股份有限公司 | Device to device (d2d) communication method and apparatus, and vehicle networking terminal |
| WO2018006759A1 (en) * | 2016-07-08 | 2018-01-11 | 中兴通讯股份有限公司 | Channel access method, apparatus and system, and storage medium |
| WO2018119687A1 (en) * | 2016-12-27 | 2018-07-05 | 华为技术有限公司 | Data transmission method, terminal device and access network device |
| CN110268739A (en) * | 2019-05-09 | 2019-09-20 | 北京小米移动软件有限公司 | Connection control method, device and readable storage medium storing program for executing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018014192A1 (en) | 2016-07-19 | 2018-01-25 | Nec Corporation | Method and device for performing communication |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103229582A (en) * | 2012-12-24 | 2013-07-31 | 华为技术有限公司 | Method for resource competition, and method and device for utilization of resource competition |
| CN103338497A (en) * | 2013-06-14 | 2013-10-02 | 北京交通大学 | Autonomous equipment discovering method in D2D communication system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60037499T2 (en) * | 2000-04-04 | 2008-12-04 | Sony Deutschland Gmbh | A method of prioritizing users accessing a common communication channel in a random manner |
| US9055389B2 (en) * | 2011-12-30 | 2015-06-09 | Telefonaktiebolaget L M Ericsson (Publ) | Method and network node for handling beacon signal transmission |
-
2014
- 2014-10-21 CN CN201410564089.4A patent/CN105592523A/en not_active Withdrawn
-
2015
- 2015-07-23 WO PCT/CN2015/084907 patent/WO2016062138A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103229582A (en) * | 2012-12-24 | 2013-07-31 | 华为技术有限公司 | Method for resource competition, and method and device for utilization of resource competition |
| CN103338497A (en) * | 2013-06-14 | 2013-10-02 | 北京交通大学 | Autonomous equipment discovering method in D2D communication system |
Non-Patent Citations (3)
| Title |
|---|
| CATT: "《3GPP TSG RAN WG1 Meeting #75》", 15 November 2013 * |
| CATT: "《3GPP TSG RAN WG1 Meeting #76》", 28 February 2014 * |
| INTEL CORPORATION: "《3GPP TSG RAN WG1 Meeting #74bis》", 11 October 2013 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206560A1 (en) * | 2016-05-31 | 2017-12-07 | 中兴通讯股份有限公司 | Device to device (d2d) communication method and apparatus, and vehicle networking terminal |
| CN107454574A (en) * | 2016-05-31 | 2017-12-08 | 中兴通讯股份有限公司 | Device-to-device D2D communication means, device and car networking terminal |
| CN107454574B (en) * | 2016-05-31 | 2022-04-05 | 中兴通讯股份有限公司 | Device-to-device D2D communication method and device and Internet of vehicles terminal |
| WO2018006759A1 (en) * | 2016-07-08 | 2018-01-11 | 中兴通讯股份有限公司 | Channel access method, apparatus and system, and storage medium |
| CN106162737A (en) * | 2016-08-09 | 2016-11-23 | 北京交通大学 | A kind of D2D equipment autonomously based on adaptive congestion control finds method |
| CN106162737B (en) * | 2016-08-09 | 2019-05-17 | 北京交通大学 | A kind of D2D equipment autonomously discovery method based on adaptive congestion control |
| WO2018119687A1 (en) * | 2016-12-27 | 2018-07-05 | 华为技术有限公司 | Data transmission method, terminal device and access network device |
| US10945257B2 (en) | 2016-12-27 | 2021-03-09 | Huawei Technologies Co., Ltd. | Data sending method, terminal device, and access network device |
| CN110268739A (en) * | 2019-05-09 | 2019-09-20 | 北京小米移动软件有限公司 | Connection control method, device and readable storage medium storing program for executing |
| CN110268739B (en) * | 2019-05-09 | 2022-09-20 | 北京小米移动软件有限公司 | Access control method, device and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016062138A1 (en) | 2016-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2702083C1 (en) | Random access preamble to minimize latency pa | |
| EP3136619B1 (en) | Discovery method for device to device communication between terminals | |
| WO2016019734A1 (en) | D2d communication method and device | |
| CN103997788B (en) | Method for discovering equipment and user equipment, network side equipment for device-to-device communication | |
| EP3741073B1 (en) | Methods, infrastructure equipment and communications device | |
| CN105592523A (en) | Device discovery apparatus and device discovery method for device-to-device communication | |
| KR102255032B1 (en) | Apparatus and method for transmitting data on device to device communication | |
| JP6040989B2 (en) | Base station apparatus, mobile station apparatus, communication system, and communication method | |
| CN106664664B (en) | Method and apparatus for performing communication by device-to-device communication terminal | |
| KR102617835B1 (en) | Method and apparatus for transmitting and receiving sidelink synchronization signal in wireless communication system | |
| EP3032887A1 (en) | Device discovery method and user equipment, and network-side device | |
| CN111586861B (en) | Random access method, equipment and system | |
| CN104853339A (en) | Signal processing method and device | |
| WO2016045442A1 (en) | Method, device, and system for device-to-device communication | |
| CN101933372B (en) | Method for performing ranging in wireless communication system supporting two wireless communication schemes | |
| CN103765961B (en) | Communication equipment, communication means, communication system and base station | |
| CN103108405A (en) | Method and system of wireless communication | |
| WO2015176517A1 (en) | Device-to-device resource configuration method, network device, and user equipment | |
| CN104885379B (en) | For sending the method and apparatus for finding signal | |
| CN105282846A (en) | Device-to-Device (D2D) communication method and device, and D2D communication control device | |
| CN105656597B (en) | Data transmission method and device | |
| WO2018028689A1 (en) | System information transmission method and apparatus | |
| WO2020164639A1 (en) | Random access method, device, and system | |
| JP2017539135A (en) | Power control mode for D2D synchronization signal | |
| JP5389919B2 (en) | System and method for femtocell identification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160518 |