CN102547871A - Method and device for consulting resource in D2D (Device To Device) communication - Google Patents

Method and device for consulting resource in D2D (Device To Device) communication Download PDF

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Publication number
CN102547871A
CN102547871A CN2012100263987A CN201210026398A CN102547871A CN 102547871 A CN102547871 A CN 102547871A CN 2012100263987 A CN2012100263987 A CN 2012100263987A CN 201210026398 A CN201210026398 A CN 201210026398A CN 102547871 A CN102547871 A CN 102547871A
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CN
China
Prior art keywords
equipment
beacon frame
device
resource
current
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CN2012100263987A
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Chinese (zh)
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CN102547871B (en
Inventor
张向东
夏金环
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华为技术有限公司
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Priority to CN201210026398.7A priority Critical patent/CN102547871B/en
Publication of CN102547871A publication Critical patent/CN102547871A/en
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Publication of CN102547871B publication Critical patent/CN102547871B/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]

Abstract

The embodiment of the invention discloses a method and a device for consulting resource in D2D (Device To Device) communication. The method comprises the steps that: a current device receives resource demand information sent by the other device in a current super frame, and the resource demand information comprises a service priority level of the other device, a beacon time slot of a beacon of the other device and/or the amount of resource applied by the other device; and the resource position which can be distributed for the current device can be calculated according to the service priority level of the other device, the beacon time slot of the beacon of the other device and/or the amount of the resource applied by the other device by the current device. By adopting the method or the device disclosed by the embodiment of the invention, the phenomenon that the same resource is competed by multiple devices is avoided, and the efficiency of consulting the resource between the devices is increased.

Description

Resource negotiation method and apparatus in a kind of D2D communication

Technical field

The present invention relates to communication technical field, relate in particular to the resource negotiation method and apparatus in a kind of D2D communication.

Background technology

Internet of Things is meant, through the various device that deployment has certain perception, calculating, execution and communication capacity, obtains the information of physical world, and realizes message transmission, collaborative and processing through network, thereby realizes the interconnected network of people and thing, thing and thing.In brief, Internet of Things is exactly to realize interconnecting of people and thing, thing and thing.The application of Internet of Things comprises various aspects such as intelligent grid, reading intelligent agriculture, intelligent transportation and environment measuring.D2D (Device-to-Device, equipment is to equipment) communication, as Internet of Things use a kind of, mainly be the direct communication that realizes between two equipment.The technology that D2D communication relates to comprises: WPAN (Wireless Personal Area Network Communication Technologies; The wireless personal local area network communication technology), UWB (Ultra Wideband, ultra broadband), bluetooth (Bluetooth), Wifi short-distance wireless communications such as (WiMAXs) technology.

For strengthening the control of mobile operator in the Internet of Things field; There has been associated companies to carry out and supported the research that D2D uses in the mandate frequency range of operator; And actively promote in well-known normal structure 3GPP project verification, purpose is to use the mandate frequency range of operator to support and realizes that D2D uses.Authorize frequency range to realize D2D communication in operator, the primary problem that solves is exactly under the situation that does not influence existing cellular communication, how to carry out device discovery, resource negotiation and resource allocation.Existing UWB system provides a kind of method of device discovery, because UWB is a kind of complete distributed system, so realize device discovery and resource negotiation through regularly in superframe, sending beacon frame between the UWB equipment.Wherein, a UWB superframe, length is 65536 μ s, is made up of 256 MAS (Medium Access Slot, media access slot), each MAS length is 256 μ s.The beginning of each UWB superframe all is BP (beacon period; Beacon period); Each beacon period can comprise several beacon slots (beacon slot), and the length of beacon slot can be 85 μ s, and the maximum length of BP can be 96 beacon slots.

Based on the said equipment discover method, resource distribution mode of the prior art comprises: a kind of is the mode of reserved resource, and the equipment that is exactly reserved resource for it can send information in reserved resource; A kind of in addition is exactly competitive way, promptly is outside BP and above-mentioned reserved resource, adopts competitive way to send information.

Because equipment when finding, does not consider to send the available resources problem of beacon frame, on the resource of existing cellular communication, send beacon frame arbitrarily; This will cause interference to existing cellular communication; Even if equipment can realize finding, but also can't learn resource reservation situation each other, this will cause the equipment resource occupation that after finding, is at war with; Perhaps carry out complicated reserved resource negotiations process, efficient is lower when being applied directly in the cellular communication environment; Further,, so, just might there be the resource reservation conflict, and need carries out the conflict processing procedure of complicacy, also can cause between the equipment efficient of resource negotiation relatively low if comprise in the beacon frame directly about the obligate information of certain MAS.

Summary of the invention

The embodiment of the invention provides the resource negotiation method and apparatus in a kind of D2D communication, to pass through the improvement to the resource negotiation process, the efficient of resource negotiation between the equipment in the lifting D2D communication.

For solving the problems of the technologies described above, the embodiment of the invention provides the resource negotiation method in a kind of D2D communication, and this method comprises:

Said current device receives the resource requirement information that other equipment send at current superframe, and said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources;

Said current device calculates the resource location that said current device can be assigned to according to the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources.

The embodiment of the invention also provides the equipment in a kind of D2D communication, and this equipment comprises:

First receiver module; Be used to receive the resource requirement information that other equipment send at current superframe, said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources;

Computing module is used for the service priority according to said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources, calculates the resource location that said equipment can be assigned to.

The embodiment of the invention has the following advantages:

When the embodiment of the invention carries out carrying out resource negotiation between the equipment; Through the service priority of equipment, the beacon slot at beacon place and/or the resource requirement information such as quantity of equipment application resource; Can calculate the resource location that each equipment self can be assigned to; Each equipment transmission information on the resource location that oneself can be assigned to all just makes resource negotiation efficient all get a promotion, and then also can improve the efficient of transmission information like this.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the flow chart of method for discovering equipment embodiment 1 of the present invention;

Fig. 2 is the flow chart of method for discovering equipment embodiment 2 of the present invention;

Fig. 3 is the flow chart of resource negotiation method embodiment of the present invention;

Fig. 4 is the flow chart of step 301 in the flow chart shown in Figure 3;

Fig. 5 is the flow chart of method for sending information embodiment of the present invention;

Fig. 6 is the structural representation of a kind of apparatus embodiments 1 of the present invention;

Find the structural representation of module 602 among the embodiment shown in Figure 6 that Fig. 7 is;

Fig. 8 is the structural representation of a kind of apparatus embodiments 2 of the present invention;

Fig. 9 is the structural representation of another kind of apparatus embodiments of the present invention;

Figure 10 is the structural representation of computing module 902 in the apparatus embodiments shown in Figure 9;

Figure 11 is the structural representation of another apparatus embodiments of the present invention.

Embodiment

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

In embodiments of the present invention; Different with prior art is the equipment in the embodiment of the invention; At first from the base station of cellular communication or the operation of obtaining the beacon frame available resources of other equipment; And the content that comprises of the beacon frame that uses in the embodiment of the invention; Beacon frame in the embodiment of the invention also comprises in the following field one or more except comprising beacon transmitting apparatus sign, beacon receiving equipment sign and beacon slot numbering: beacon frame type sign, master-slave communication device identification, beacon frame available resources position, type of service, Correspondent Node device identification, the position of the resource quantity of applying for and information transmission.Wherein, comprise in the beacon frame that which field can be to find mutually, carry out that resource negotiation or the information of carrying out are sent and different according to the equipment of participating in D2D communication.The equipment of D2D communication communicates through the mandate frequency range of operator.

Wherein, beacon frame type sign: can identify the type of beacon frame, can be " device discovery beacon frame ", " resource bid beacon frame " and " information is sent and notified beacon frame " etc.Wherein, The equipment of participating in D2D communication can send the said equipment discovery beacon frame and realize the discovery of miscellaneous equipment for the beacon frame transmitting apparatus, and perhaps for the discovery of other designated equipment, the resource bid beacon frame then can be used for after the discovering device; When needs send information, send this beacon frame and consult available resources; Simultaneously, information is sent and to be notified beacon frame and then can be used for indicating and have information to send in the current superframe, indication receiving equipment reception information on the resource location of correspondence.It is thus clear that the different beacon frame type comprises the different information contents, also can satisfy different functions demand in the practical application.

Need to prove that resource bid is carried out after equipment is successfully found, still, equipment also can be realized device discovery when receiving the resource bid beacon frame, comprising the discovery to designated equipment; Equally, information sends that to notify beacon frame be on the successful basis of resource bid, to carry out, but equipment also can be realized device discovery or resource negotiation when receiving the resource bid beacon frame.

The master-slave communication device identification: being used for identifying the equipment that sends beacon frame is main equipment or slave unit.No matter whether the D2D communicating pair lose with the base station and be connected, as long as communicate with master-slave mode, the equipment that is in main status is main equipment, and being in from the equipment of status is slave unit.If do not communicate with master-slave mode, the D2D communicating pair is equal, does not then distinguish master-slave equipment.Wherein, Main equipment can obtain the available resources positional information of sending beacon frame from base station side or other main equipment side of cellular communication; Also can oneself define beacon frame available resources positional information, and can send to slave unit to above-mentioned beacon frame available resources positional information that obtain, perhaps definition as required; Slave unit can obtain beacon frame available resources positional information from the base station side or the main equipment side of cellular communication, and can not oneself define beacon frame available resources positional information.Master-slave equipment all need obtain beacon frame available resources positional information before sending beacon frame.

Wherein, Under following three kinds of scenes; The definition standard of master-slave equipment can for: (1), all D2D equipment can both with situation that the cellular communications network base station is connected under; All devices can obtain beacon frame available resources positional information from the cellular communication base stations side, can confirm that equipment is main equipment or slave unit whether to select master-slave mode communication and the principal and subordinate status in master-slave mode communication; (2), there are being part D2D equipment and base station to lose under the situation about being connected; Losing the equipment that is connected with the base station can be slave unit; Whether miscellaneous equipment can according to selecting the master-slave mode communication pattern, and the principal and subordinate status in the master-slave communication pattern, confirms main equipment or slave unit; (3), the equipment in all D2D communications all loses under the situation about being connected with the base station; Can be according to certain rule; Select equipment component as main equipment, such as select beacon slot be 0,1 or the equipment of other time slot as main equipment, and with the remaining time slots corresponding equipment as slave unit.Need to prove, only if, be main equipment under the equipment default situations of participation D2D communication through preestablishing;

Beacon frame available resources position: can illustrate the resource location that can send beacon frame with the form of bitmap (bitmap);

Type of service: be used for identifying the type of service of beacon transmitting apparatus requirement, can represent current device carrying out any type of service, such as speech business, video traffic, the business etc. of checking meter.Need to prove that the type of service of equipment can define priority in advance.

The Correspondent Node device identification: be used for unique identification Correspondent Node equipment, this Correspondent Node device identification is provided with different Correspondent Node equipment mark according to the type of beacon frame;

The resource quantity of applying for: the resource quantity that the transmitting apparatus of expression beacon frame is applied in next superframe.Need to prove, to even things up, can limit in each super frame period that the quantity of the resource of each equipment application thinks that miscellaneous equipment applies for that in same superframe resource keeps chance;

The position that information is sent: indicate in the current superframe, information is sent employed resource location.

Need to prove that above-mentioned field might not all comprise, and can accept or reject according to the function needs in the beacon frame of each type.The included content of beacon frame can be confirmed according to " beacon frame type sign " field.

Then the embodiment of the invention is in practical application; Be defined as available resources " super frame period "; And be divided into " beacon period " and " cycle data " to one " super frame period "; The equipment of participating in D2D communication can send various types of beacon frames, transmission information in " cycle data " in " beacon period ".Wherein, " super frame period " is not limited to a period of time on the time domain, also can be all available resources on a period of time and/or the one section frequency range.Such as, can be all the available time in the sub-frame in LTE (Long Term Evolution, the Long Term Evolution) system; Equally, " beacon period " and " cycle data " also is not limited to a period of time on the time domain, also can be one section frequency range on the frequency domain." beacon period " is divided into some " beacon slots " again, such as, can be relative littler running time-frequency resource of " beacon period " in the LTE system.

With reference to figure 1, in one embodiment of the invention, realize a kind of embodiment of the method for discovering equipment that the embodiment of the invention provided, can may further comprise the steps:

Step 101: receiving equipment receives the first device discovery beacon frame that other D2D equipment send, and the parameter of the said first device discovery beacon frame comprises: the first Correspondent Node device identification; Do not represent the beacon frame transmitting apparatus in the device discovery procedure of participating in said receiving equipment when the said first Correspondent Node device identification is not empty, be not the sign of said receiving equipment for empty Correspondent Node device identification.

In embodiments of the present invention, if other D2D equipment have sent the device discovery beacon frame to current device, and the parameter of this device discovery beacon frame can comprise at least: the Correspondent Node device identification; Not representing said other equipment in the device discovery procedure of participating in said current device when the Correspondent Node device identification is not empty, is not the sign of said current device for the empty said first Correspondent Node device identification.In this step, when this Correspondent Node device identification has indicated the sign of said receiving equipment, just can realize discovery to designated equipment (promptly being receiving equipment), perhaps can realize finding request responding for the designated equipment that sends before the receiving equipment.

In practical application, said device discovery beacon frame can also comprise the master-slave communication device identification, and said active communication device identification can represent that the equipment of transmitting apparatus discovery beacon frame is main equipment or slave unit.Device discovery procedure is because the included field difference of device discovery beacon frame also can be divided into the first device discovery subprocess and the second device discovery subprocess.In the first device discovery subprocess; Transmitting apparatus is found beacon frame 1 (differentiation for ease; The device discovery beacon frame that will in the first device discovery subprocess, send is defined as device discovery beacon frame 1; And the device discovery beacon frame that sends in the second device discovery subprocess is defined as device discovery beacon frame 2) other equipment be main equipment, said in this case device discovery beacon frame 1 specifically can comprise: beacon frame type sign, master-slave communication device identification, beacon frame available resources position, Correspondent Node device identification and type of service; Wherein, the current beacon frame of beacon frame type sign indication is a device discovery beacon frame 1, and also promptly, the device discovery procedure of current participation is the first device discovery subprocess; The master-slave communication device identification then is designated as main equipment; The resource that can send beacon frame can be indicated with the bitmap form in beacon frame available resources position; And for the Correspondent Node device identification: if target device is found in indication, perhaps to other device discovery request responding, so, this field is set to the sign of target device to be found, perhaps sends the equipment mark of said discovery request; Otherwise the Correspondent Node device identification is empty; Type of service: the indication transmitting apparatus is found the desired type of service of other equipment of beacon frame.

And send under the situation of said device discovery beacon frame 1 at main equipment; If there is not slave unit to exist in the network; That is: in network, do not listen to " master-slave communication device identification " field and be designated as the beacon frame of slave unit; Perhaps, when not having in the network to exist, then can select main equipment and regularly send this beacon frame from the main equipment that other main equipment obtains the beacon frame positional information; If there is slave unit to exist in the network; Promptly; In network, listen to " master-slave communication device identification " field and be designated as the beacon frame of slave unit, perhaps have in the network in the time of need existing from the main equipment that other main equipment obtains the beacon frame positional information, selected main equipment continues to send this beacon frame.Above-mentioned " selected main equipment " can be chosen according to established rule.Such as, when having a plurality of main equipment in the network, can select the less or bigger main equipment of beacon slot numbering; When not having main equipment in the network, equipment can be with the mode of aspiration, perhaps; Agreement is carried out changing role by some equipment (such as the less or bigger equipment of beacon slot); Convert main equipment to, the main equipment after conversion, selection equipment is as " selected main equipment " then.

In the second device discovery subprocess, the field that " the device discovery beacon frame 2 " that other equipment send specifically comprises has: beacon frame type sign, master-slave communication device identification, Correspondent Node device identification and type of service.Wherein, it is device discovery beacon frame 2 that this beacon frame type sign is designated as current beacon frame, and also promptly, the device discovery procedure of current participation is the second device discovery subprocess; The master-slave communication device identification is that slave unit or main equipment are set according to the equipment that sends beacon frame then; And for the Correspondent Node device identification: if target is found in indication, perhaps to the discovery request responding of miscellaneous equipment, so, this field is set to find the sign of target device, perhaps sends this equipment mark of the request of discovery; Otherwise this sign is set to sky; Type of service then is set to indicate the type of service of beacon transmitting apparatus requirement.

In the second device discovery subprocess, device discovery beacon frame 2 is mainly sent by slave unit, and other equipment can be found it, perhaps finds designated equipment.And, in the first device discovery subprocess, be chosen the main equipment that needs regularly or continue transmitting apparatus discovery beacon frame 1 for main equipment, and also can send outside " device discovery beacon frame 1 ", send this device discovery beacon frame 2; And be not chosen the main equipment of transmission " device discovery beacon frame 1 ", can continue to send this device discovery beacon frame 2.

Step 102: receiving equipment is realized the discovery to said other equipment according to the first Correspondent Node device identification in the said first device discovery beacon frame.

Be directed to aforesaid receiving equipment, no matter receive device discovery beacon frame 1 or device discovery beacon frame 2 can both be realized the discovery to said other equipment according to field wherein.

Concrete, the Correspondent Node in said device discovery beacon frame is designated under the empty situation, and said receiving equipment has just been realized the discovery to said transmitting apparatus through receiving said device discovery beacon frame.And if the Correspondent Node sign is not empty; Receiving equipment just needs to judge whether oneself once sent the device discovery beacon frame to said other equipment; If not, then said receiving equipment is found beacon frame to said other equipment Returning equipments, and the device discovery request of target is found in the indication that is used for response beacons frame transmitting apparatus; Wherein, the Correspondent Node device identification in the said device discovery beacon frame that returns is said other equipment mark; If; Then receiving equipment is directly realized the discovery to said other equipment according to said device discovery beacon frame; Promptly be that this beacon frame that receives is the response for the beacon frame that sends before the receiving equipment, just accomplished the device discovery procedure that target is found in the own indication of initiating before.

For receiving equipment is slave unit; Perhaps receiving equipment is the main equipment that need obtain beacon frame available resources positional information from other main equipment; " beacon frame available resources position " information that receiving equipment also can carry according to this beacon frame is obtained the resource location that can send beacon frame, the beacon frame information of sending according to the miscellaneous equipment of monitoring then; Select an idle time slot; On the resource that in the beacon frame available resources, is not used, send the device discovery beacon frame of oneself, thereby can let other device discovery oneself.

Need to prove; For the appointment in the said equipment discovery procedure for the device discovery procedure of discovery target device (promptly being the represented Correspondent Node of Correspondent Node identification field); Transmitting apparatus is found the equipment Drequest of request; The corresponding apparatus discovery beacon frame that need listen to discovery target device Dresponse transmission is just accomplished whole discovery procedure as response.In practical application, also can set; If equipment Drequest attempts sending after the particular device discovery beacon frame of several times to equipment Dresponse; Perhaps in the some cycles after certain particular device is found the beacon transmission; Do not receive the response beacons frame of said discovery target device Dresponse, then think and find that target device Dresponse is not in its communication range.

In the present embodiment; Transmitting apparatus sent beacon frame when equipment was found, had also comprised the Correspondent Node device identification, and this Correspondent Node device identification can realize the discovery of any apparatus when being empty; Designated equipment has just been indicated in this Correspondent Node device identification during not for sky; When the sign of certain receiving equipment was identical with this Correspondent Node device identification, this receiving equipment returned the device discovery beacon frame that the Correspondent Node device identification is set to these other device identifications to other equipment that send beacon frame again, just can realize the discovery procedure of designated equipment; Also can save the time, thereby raise the efficiency when carrying out resource negotiation follow-up for next step resource negotiation process.

With reference to figure 2, in one embodiment of the invention, realize the another kind of embodiment of the method for discovering equipment that the embodiment of the invention provided, can may further comprise the steps:

Step 201: transmitting apparatus obtains beacon frame available resources positional information and super frame period information; And scan a beacon period at least; Arrive under the situation of at least one beacon frame in said beacon period interscan; Get into step 202, in said beacon period, do not scan under the situation of beacon frame, get into step 203.

Step 202: in said beacon period, select the beacon slot of a free time, and send the first device discovery beacon frame at other equipment in D2D communication on the said beacon slot.

Step 203: in beacon period, select a beacon slot arbitrarily, and send the second device discovery beacon frame at other equipment in D2D communication on the said optional beacon slot.

In the present embodiment; Transmitting apparatus is before sending beacon frame; At first obtain beacon frame available resources positional information and super frame period information; Main equipment can obtain beacon frame available resources positional information from cellular communications networks side or other main equipment side, perhaps oneself defines beacon frame available resources positional information, and gives miscellaneous equipment above-mentioned beacon frame available resources broadcast of position information as required; Slave unit can obtain beacon frame available resources positional information from the network side or the main equipment side of cellular communication.And scan a beacon period at least to obtain existing beacon message.If device scan is to one or more beacon frames, equipment selects the beacon slot of a free time to send the beacon frame of oneself in beacon period; Otherwise equipment can select a beacon slot to send the beacon frame of oneself in beacon period arbitrarily; The beacon of each equipment transmitting apparatus oneself on the beacon slot of oneself receives the beacon that miscellaneous equipment sends on other time slot.

Step 204: said other equipment are synchronous according to the said first device discovery beacon frame or realization of the second device discovery beacon frame and said transmitting apparatus.

If said other equipment are after receiving the first device discovery beacon frame or the second device discovery beacon frame; Also accomplish with the D2D communication network synchronously, then remove accomplish realize finding for the transmitting apparatus that sends the first or second device discovery beacon frame, can also obtain synchronous with transmitting apparatus according to this beacon frame; Such as; The beacon frame time of reception is TRx, and the beacon frame time-gap number is SN, and beacon slot length is TS; So, can calculate the time started of beacon period just is: T=TRx-TS * SN.

In practical application, need synchronous not necessarily slave unit just, if main equipment can not be synchronous with cellular network, and oneself there not be to define oneself super frame period again, just need be synchronous with existing super frame period.Two main equipments also can communicate.

Step 205: said other equipment are realized the discovery to said other equipment according to the said first device discovery beacon frame or the second device discovery beacon frame.

Said other equipment are found transmitting apparatus according to the first device discovery beacon frame or the second device discovery beacon frame that receive again.Concrete discovery procedure is introduced in embodiment 1 in detail, repeats no more at this.

Step 206: said first or the parameter of the second device discovery beacon frame comprise also under the situation of beacon frame available resources position that said beacon frame available resources position is used to indicate the current resource that can send beacon frame; Said other equipment obtain the beacon frame available resources position that can send the 3rd device discovery beacon frame according to the said first device discovery beacon frame.

In the present embodiment, the parameter in the said first or second device discovery beacon frame comprises also under the situation of beacon frame available resources position that the current resource that can send beacon frame can be indicated in said beacon frame available resources position.

Need to prove, exist under the scene of slave unit that if main equipment can be connected with the base station, transmitting apparatus finds that the main equipment of beacon frame just can obtain beacon frame available resources position from base station side so; If main equipment can not be connected with the base station, main equipment perhaps obtains beacon frame available resources positional information from other main equipment side so, and beacon frame available resources position perhaps oneself is set.Main equipment sends to other main equipment or slave unit to beacon frame available resources position as required; Accomplish synchronously the beacon frame available resources position that slave unit sends based on main equipment and available resources are selected.

Step 207: return the 3rd device discovery beacon frame in the beacon frame available resources on the resource location that receiving equipment is not used.

Return the 3rd device discovery beacon frame on the resource location that receiving equipment can not be used in the beacon frame available resources; To realize of the discovery of said other equipment to said current device; Wherein, the second communication opposite equip. in said the 3rd device discovery beacon frame is designated said other equipment mark.

In addition; If receiving equipment is a slave unit in the present embodiment, perhaps need obtain the main equipment of beacon frame available resources positional information from other main equipment, receiving equipment also can be according to " beacon frame available resources position " information; Obtain the resource location that can send beacon frame; And then, select an idle time slot, on the resource that in the beacon frame available resources, is not used according to the beacon frame information that the miscellaneous equipment of monitoring sends; Send the beacon frame of oneself, thereby can let miscellaneous equipment can find oneself.

In the present embodiment; Current device advanced line scanning before transmitting apparatus is found beacon frame; And can realize with other equipment synchronously; And can also realize on the basis that other equipment are found, find that to other equipment transmitting apparatus beacon frame is to realize the discovery of other equipment to oneself.

With reference to figure 3, in one embodiment of the invention, realize the resource negotiation method that the embodiment of the invention provided, can may further comprise the steps:

Step 301: current device receives the resource requirement information that other equipment send at current superframe, and said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources.

Present embodiment can be applied on the current device and other equipment found mutually of partner networking D2D communication; Current device is at beacon frame that other equipment that receive send and after obtaining resource requirement information, just can oneself can send the resource location of information according to the service priority of wherein other equipment and/or the beacon slot at other equipment beacons place and/or the quantity calculating of other equipment application resources.

Step 302: current device calculates the resource location that said current device can be assigned to according to the service priority of other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources.

When the current device of having accomplished device discovery need communicate with other equipment, can carry out resource negotiation through the mode of agreement, with reference to shown in Figure 4, said step 302 specifically can comprise:

Step 401: current device according to the quantity of the beacon slot at the service priority of said other equipment and/or said other equipment beacons places and/or said other equipment application resources to have the resource bid demand equipment sort; Said have the resource bid demand equipment comprise said current device and said other equipment;

Wherein, D SenderBe information transmitting apparatus, D ReceiverBe information receiving device, have information to send all D of demand SenderEquipment, after getting access to resource requirement information, carry out resource negotiation according to following rule:

D SenderEquipment listens to after all beacons; Obtain resource requirement information own and neighbouring device; Then; To resource requirement information according to service priority from high to low, the beacon slot at requesting service beacon place from big to small (perhaps from small to large), the resource of applying for quantity from big to small (perhaps from small to large) sort, then the available resources in " cycle data " of next superframe are distributed, and calculate the position of the resource that self can be assigned to.For example, in all resource requirement information, the demand that service priority is higher preferentially obtains resource allocation; Under equal service priority situation, the demand priority of beacon slot less (greatly) obtains resource allocation; Perhaps, under equal service priority situation, the resource bid quantity demand priority of big (little) obtains resource allocation.So, D SenderSort according to the equipment of above-mentioned priority, such as ranking results be: D the application resource 1, D 2..., D Sender..., D N-1, D n, corresponding resource of applying for is respectively: R 1, R 2..., R Sender..., R N-1, R n

Need to prove; Said current device can comprise the resource bid beacon frame of the quantity of the resource of applying for through reception; Perhaps comprise that through reception the information of the quantity of the resource of applying for sends the mode notify beacon frame, obtain the quantity of said other equipment application resources in the said resource requirement information.

Step 402: the result according to said ordering calculates the resource that said current device can be assigned to.

According to the ranking results in step 401, can learn D SenderThe resource that can take be exactly from The R of beginning SenderIndividual resource, s promptly is the sequence number of ordering.

It is understandable that,, then in the beacon frame of next superframe, comprise the position of the resource of applying for if equipment through calculating, is found oneself in " cycle data " of a superframe, can get the resource of being applied for; Otherwise equipment continues to send " resource request beacon frame ", continuation application resource at " beacon period " of next superframe relaying supervention.

To even things up; Can set one-period, make that the priority of resource allocation serves as that order is distributed with service priority from small to large, the quantity of the beacon slot and the resource of applying for; Can serve as with reference to carrying out priority of resource allocation from small to large or conversion from big to small also with certain cycle; Perhaps the priority of beacon slot can be carried out with the mode of cyclic shift, such as N beacon slot arranged, for the first time with " N-1, N-2 ..., 1,0 " be priority orders; For the second time with " N-2 ..., 1,0, N-1 " be priority orders, circulate successively.

Resource bid process in the present embodiment also can be divided into the first resource bid subprocess and the second resource bid subprocess according to the difference of the resource bid beacon frame that sends; In the first resource bid subprocess, " the first resource bid beacon frame " that is sent comprises beacon frame type sign, master-slave communication device identification, beacon frame available resources position, Correspondent Node device identification, type of service and the resource quantity of applying for; Wherein, beacon frame type sign: be used in reference to and be shown " the first resource bid beacon frame "; The master-slave communication device identification is that slave unit or main equipment are set according to current device then; The resource that beacon frame then can be sent with the indication of bitmap form in beacon frame available resources position; The sign of the opposite equip. of applying for that resource communicates is then indicated in the Correspondent Node device identification; Type of service: the type of service that indication beacon transmitting apparatus (current device) requires; The resource quantity of applying for is used to indicate the resource quantity of application.

This first resource bid beacon frame can be sent when needs carry out resource bid, to carry out resource bid by " the selected main equipment " that need to send " device discovery beacon frame 1 ".

Accordingly, the second resource bid subprocess then sends " the second resource bid beacon frame ", comprises beacon frame type sign, master-slave communication device identification, Correspondent Node device identification, type of service and the resource quantity of applying for; Wherein, the beacon frame type sign is designated as " the second resource bid beacon frame "; The master-slave communication device identification is that slave unit or main equipment are set according to current device then; The sign of the opposite equip. of applying for that resource communicates is then indicated in the Correspondent Node device identification; Type of service is then indicated the type of service of beacon transmitting apparatus requirement; The resource quantity of applying for is used to indicate the resource quantity of application.

This second resource bid beacon frame can be by " the selected main equipment " that need to send " device discovery beacon frame 1 "; When needs carry out resource bid; And when not needing to send " device discovery beacon frame 1 ", send this second resource bid beacon frame and carry out resource bid; Main equipment outside above-mentioned " selected main equipment ", and slave unit when needs carry out resource bid, can send this second resource bid beacon frame and carry out resource bid.

Need to prove, the resource bid beacon frame application of being sent in the present embodiment be the resource in the next superframe.Also promptly send the equipment of resource bid beacon frame and in current superframe, apply for resource through sending " resource bid beacon frame "; And in next superframe the resource of request for utilization (if resource bid success) transmission information; And if equipment is not applied for resource, next superframe then can the continuation application resource.

In the present embodiment; Through on two equipment realizing finding, carrying out the negotiation of resource bid; Can simplified apparatus resource negotiation process after finding; And because each equipment all is based on the resource negotiation that the own resource bid situation that reaches other equipment is carried out, so the efficient of resource negotiation between can raising equipment.

With reference to figure 5, in one embodiment of the invention, realize the method for sending information that the embodiment of the invention provided, can may further comprise the steps:

Step 501: said current device receives the resource requirement information that other equipment send at current superframe, and said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources;

Present embodiment is applied on the current device and other equipment found mutually of partner networking D2D communication, and said current device is that equipment that needs transmission information.

Step 502: said current device calculates the resource location that said current device can be assigned to according to the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources;

Step 503: in the next superframe of said current superframe; Said current device sends to said other equipment transmission information notifies beacon frame; Said information is sent and is notified the position that beacon frame comprises that information is sent, and the position that said information is sent is used to indicate the resource location of the current use of said current device.

After said current device resource bid success, this current equipment just can be on the resource of applying for transmission information.Also because information is sent and to be notified the difference of beacon frame, the first information sends subprocess to this information process of transmitting and second information is sent subprocess and be divided into, and wherein, information is sent and notified beacon frame and be used for notifying and have information to send in the current superframe of receiving equipment.

Send in the subprocess at the said first information, the first information of transmission sends notifies beacon frame and comprises: beacon frame type sign, master-slave communication device identification, beacon frame available resources position, Correspondent Node device identification, type of service, the position of the resource quantity of applying for and information transmission; Wherein, the beacon frame type sign is designated as " first information sends and notifies beacon frame "; The master-slave communication device identification is that slave unit or main equipment are set according to equipment then; The resource that can send beacon frame can the bitmap form be indicated in beacon frame available resources position; The Correspondent Node device identification is the sign of indication information receiving equipment then; Type of service is then indicated the type of service of beacon transmitting apparatus requirement; The resource quantity of applying for: if information transmitting apparatus information is sent do not finish, this field is set to the quantity of the resource of information transmitting apparatus continuation application.Otherwise if information transmitting apparatus information is sent and to be finished, this field is put sky, shows that next superframe information transmitting apparatus no longer applies for resource; The original position of employed resource is sent in the position that information is sent then indication information.

The above-mentioned first information sends notifies beacon frame by " the selected main equipment " that need to send " device discovery beacon frame 1 ", sends when notifying in the needs information of carrying out and sends, and the information that is used for carrying out is sent and notified.

Send in the subprocess in above-mentioned second information, " second information is sent and notified beacon frame " of transmission comprises: beacon frame type sign, master-slave communication device identification, Correspondent Node device identification, type of service, the position of the resource quantity of applying for and information transmission; Wherein, the beacon frame type sign is designated as " second information is sent and notified beacon frame "; The master-slave communication device identification is that slave unit or main equipment are set according to transmitting apparatus then; The Correspondent Node device identification is the sign of indication information receiving equipment then; Type of service is then indicated the type of service of beacon transmitting apparatus requirement; The resource quantity of applying for: if information transmitting apparatus information is sent do not finish, this field is set to the quantity of the resource of information transmitting apparatus continuation application.Otherwise if information transmitting apparatus information is sent and to be finished, this field is put sky, shows that next superframe information transmitting apparatus no longer applies for resource; The position of presently used resource is sent in the position that information is sent then indication information.

Above-mentioned second information is sent and is notified beacon frame by " the selected main equipment " that need to send " device discovery beacon frame 1 "; Send when notifying in the needs information of carrying out; And when not needing to send " device discovery beacon frame 1 ", send this second information and send and notify the beacon frame information of carrying out and send and notify; Main equipment outside above-mentioned " selected main equipment ", and slave unit send when notifying in the needs information of carrying out, and send this second information and send and notify the beacon frame information of carrying out and send and notify.

Said other equipment can be on the resource location of said current use reception information.The receiving equipment D of beacon frame is notified in transmission for reception information Receiver; After in the beacon period of a superframe, accomplishing all beacons receptions; If receive " information send notify beacon frame " that " Correspondent Node device identification " is set to the sign of self, the resource of then sending " cycle data " of " position that information an is sent " indication of notifying in the beacon frame reception information that gets in this information.Certainly, receiving equipment also can be done necessary preparation, so that be better reception information in next superframe receiving after " Correspondent Node device identification " be set to " the resource bid beacon frame " of sign of self.

The described method for sending information of present embodiment carries out based on resource negotiation; Can well solve the lower problem of information transmitting efficiency that competitive resource causes between the equipment in the prior art; And because the resource that aforesaid resource negotiation is applied for based on equipment self is carried out; Can make that also the information process of transmitting is simple relatively, improve the efficient that information is sent between the equipment.

Need to prove; For aforesaid each method embodiment, for simple description, so it all is expressed as a series of combination of actions; But those skilled in the art should know; The present invention does not receive the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

Corresponding with the method for discovering equipment that the invention described above embodiment is provided, referring to Fig. 6, the embodiment of the invention also provides a kind of structural representation of apparatus embodiments, and said equipment specifically can comprise:

Second receiver module 601 is used to receive the first device discovery beacon frame that other equipment of participating in said D2D communication send, and the parameter of the said first device discovery beacon frame comprises: the first Correspondent Node device identification; Not representing said other equipment in the device discovery procedure of participating in said receiving equipment when the said first Correspondent Node device identification is not empty, is not the sign of said receiving equipment for the empty said first Correspondent Node device identification; And

Find module 602, be used for realizing discovery said other equipment according to the first Correspondent Node device identification of the said first device discovery beacon frame.

In said master-slave communication device identification is that said discovery module 602 specifically can be used under the situation of sky: realize the discovery to said other equipment through receiving the said first device discovery beacon frame.

In practical application, said discovery module 602 can comprise:

Judge submodule 701, be used to judge whether once sent the second device discovery beacon frame to said other equipment;

Return submodule 702; The result who is used at said judge module is under the situation not; Return the 3rd device discovery beacon frame to said other equipment; To realize the discovery of said other equipment to said receiving equipment, wherein, the second communication opposite equip. in said the 3rd device discovery beacon frame is designated said other equipment mark;

Find submodule 703, the result who is used at said judge module is under the situation that is, directly realizes the discovery to said other equipment according to the said first device discovery beacon frame.

The device transmits beacons frame that sends when the described equipment of present embodiment is found; Master-slave communication device identification and Correspondent Node device identification have also been comprised; Be used to represent that the current equipment that carries out device discovery is main equipment and slave unit, and also can directly carry out device discovery procedure, therefore with method for discovering equipment of the prior art through the setting of Correspondent Node device identification; For next step resource negotiation process can save the time, thereby raise the efficiency when carrying out resource negotiation follow-up.

With reference to shown in Figure 8, for the structural representation of the corresponding apparatus embodiments 2 of method for discovering equipment, the described equipment of present embodiment specifically can comprise:

Scan module 801 is used for scanning at least a beacon period.

First selects module 802, is used for scanning under the situation of beacon period, in said beacon period, selects the beacon slot of a free time.

Second selects module 803, is used under the situation that does not scan said beacon period, in said beacon period, selects a beacon slot arbitrarily.

Send beacon frame module 804, be used on said beacon slot other equipment transmitting apparatus and find beacon frames to current Internet of Things; Perhaps, other equipment transmitting apparatus in current Internet of Things are found beacon frame on said optional beacon slot.

Second receiver module 601 is used to receive the first device discovery beacon frame that other equipment of participating in said D2D communication send, and the parameter of the said first device discovery beacon frame comprises: the first Correspondent Node device identification; Not representing said other equipment in the device discovery procedure of participating in said receiving equipment when the said first Correspondent Node device identification is not empty, is not the sign of said receiving equipment for the empty said first Correspondent Node device identification.

Find module 602, be used for realizing discovery said other equipment according to the first Correspondent Node device identification of the said first device discovery beacon frame.

At said receiving equipment is slave unit, and said slave unit do not accomplish under the synchronous situation with current D2D, can also comprise:

Synchronization module 805 is used for the synchronous of the said device discovery beacon frame realization of foundation and said other equipment.

Parameter at said device discovery beacon frame comprises also under the situation of beacon frame available resources position that said beacon frame available resources position is used to indicate the current resource that can send beacon frame; The then said submodule that returns can comprise:

Obtain resource location submodule 806, be used for the first device discovery beacon frame, the position that obtains the beacon frame available resources that to send the 3rd device discovery beacon frame according to other equipment transmissions of monitoring;

Send submodule 807, be used for the resource location that is not used in the beacon frame available resources, select idle time slot to send said the 3rd device discovery beacon frame.

In the present embodiment; Current device advanced line scanning before transmitting apparatus is found beacon frame; And can realize with other equipment synchronously; And can also realize on the basis that other equipment are found, find that to other equipment transmitting apparatus beacon frame is to realize the discovery of other equipment to oneself.

Corresponding with the resource application method that carries out between the equipment of having found mutually; With reference to shown in Figure 9; The embodiment of the invention also provides the structural representation of another kind of equipment, and this equipment is the current device that partner networking D2D communication has been found that other equipment, specifically can comprise:

First receiver module 901; Be used to receive the resource requirement information that other equipment of having been found that send at current superframe, said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacons places and/or the quantity of said other equipment application resources;

Wherein, said first receiver module 901 specifically can comprise: receive submodule, be used to receive the transmission of resource bid beacon frame or information and notify beacon frame; Obtain the resource quantity submodule, be used for notifying the quantity that beacon frame obtains other equipment application resources described in the said resource requirement information from said resource bid beacon frame or information transmission.

Computing module 902 is used for the service priority according to said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources, calculates the resource location that said equipment can be assigned to.

Said computing module 902 specifically can comprise the resource bid beacon frame of the quantity of the resource of applying for through reception; Perhaps comprise the mode that the information of the quantity of the resource of applying for is sent beacon frame, obtain the quantity of the resource of applying in the said resource requirement information through reception.

In practical application, said computing module 902 can comprise:

Ordering submodule 1001 is used for according to the service priority of said other equipment and/or the beacon slot at said other equipment beacons places and/or the quantity of said other equipment application resources the equipment that the resource bid demand is arranged being sorted; Said have the equipment of resource bid demand to comprise said current device and said other equipment.

Calculating sub module 1002 is used for calculating the resource that said current device can be assigned to according to the result of said ordering.

In the present embodiment because the resource negotiation that current device carries out based on the resource bid situation of oneself and neighbouring device does not conflict so in the resource bid process, can not produce with other equipment, can raising equipment between the efficient of resource negotiation.

Corresponding with the aforesaid method for sending information that between the equipment that has been found that, carries out, with reference to Figure 11, the embodiment of the invention also provides the structural representation of another apparatus embodiments, specifically can comprise:

First receiver module 901; Be used to receive the resource requirement information that other equipment of having been found that send at current superframe, said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacons places and/or the quantity of said other equipment application resources;

Computing module 902 is used for the service priority according to said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources, calculates the resource location that said equipment can be assigned to.

Sending module 1101; Be used for next superframe at said current superframe; Notify beacon frame to said other equipment transmission information transmissions; Said information is sent and is notified the position that beacon frame comprises that information is sent, and the position that said information is sent is used to indicate the resource location of the current use of said current device.

The described equipment of present embodiment sends based on the aforesaid resource negotiation information of carrying out; Can well solve the lower problem of information transmitting efficiency that competitive resource causes between the equipment in the prior art; And because the resource that aforesaid resource negotiation is applied for based on equipment self is carried out; Can make that also the information process of transmitting is simple relatively, improve the efficient that information is sent between the equipment.

Need to prove that each embodiment in this specification all adopts the mode of going forward one by one to describe, what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For equipment class embodiment, because it is similar basically with method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.

Also need to prove; In this article; Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability; Thereby make to comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises said key element and also have other identical element.

More than the resource negotiation method and apparatus in the embodiment of the invention provided a kind of D2D communication has been carried out detailed introduction; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used to help to understand the method and the thought thereof of the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the thought of the embodiment of the invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (14)

1. the resource negotiation method during a D2D communicates by letter is characterized in that this method comprises:
Said current device receives the resource requirement information that other equipment send at current superframe, and said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources;
Said current device calculates the resource location that said current device can be assigned to according to the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources.
2. method according to claim 1; It is characterized in that; Said current device is according to the service priority of said other equipment, the beacon slot at said other equipment beacons places and/or the quantity of said other equipment application resources, calculates the resource location that said current device can be assigned to and comprises:
According to the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources the equipment that the resource bid demand is arranged is sorted; Said have the equipment of resource bid demand to comprise said current device and said other equipment;
Result according to said ordering calculates the resource that said current device can be assigned to.
3. method according to claim 1 is characterized in that, said current device receives other equipment in the resource requirement information that current superframe sends, and comprising:
Said current device receives the resource bid beacon frame or beacon frame is notified in the information transmission;
Said current device is notified the quantity of obtaining other equipment application resources described in the said resource requirement information the beacon frame from said resource bid beacon frame or information transmission.
4. according to each described method among the claim 1-3, it is characterized in that receive other equipment before the resource requirement information that current superframe sends at said current device, said current device is found said other equipment through following mode:
Said current device receives the first device discovery beacon frame that other equipment send, and the parameter of the said first device discovery beacon frame comprises: the first Correspondent Node device identification; Not representing said other equipment in the device discovery procedure of participating in said current device when the said first Correspondent Node device identification is not empty, is not the sign of said current device for the empty said first Correspondent Node device identification;
Said current device is realized the discovery to said other equipment according to the first Correspondent Node device identification in the said first device discovery beacon frame.
5. method according to claim 4 is characterized in that, said current device is realized the discovery to said other equipment according to the first Correspondent Node device identification in the said first device discovery beacon frame, comprising:
Current device judges whether once to send the second device discovery beacon frame to said other equipment;
If not; Then said current device returns the 3rd device discovery beacon frame to said other equipment; To realize the discovery of said other equipment to said current device, wherein, the second communication opposite equip. in said the 3rd device discovery beacon frame is designated said other equipment mark;
If then said current device is realized the discovery to said other equipment according to the said first device discovery beacon frame.
6. method according to claim 5 is characterized in that, the parameter of the said first device discovery beacon frame also comprises beacon frame available resources position, and said beacon frame available resources position is used to indicate the current resource that can send beacon frame; Then said current device returns the 3rd device discovery beacon frame to said other equipment and comprises:
Current device is according to the said first device discovery beacon frame, the position that obtains the beacon frame available resources that can send the 3rd device discovery beacon frame;
On the resource location that in beacon frame available resources position, is not used, current device selects idle time slot to send said the 3rd device discovery beacon frame.
7. method according to claim 1 is characterized in that, also comprises:
In the next superframe of said current superframe; Said current device sends to said other equipment transmission information notifies beacon frame; Said information is sent and is notified the position that beacon frame comprises that information is sent, and the position that said information is sent is used to indicate the resource location of the current use of said current device.
8. the equipment during a D2D communicates by letter is characterized in that this equipment comprises:
First receiver module; Be used to receive the resource requirement information that other equipment send at current superframe, said resource requirement information comprises the service priority of said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources;
Computing module is used for the service priority according to said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources, calculates the resource location that said equipment can be assigned to.
9. equipment according to claim 8 is characterized in that, said computing module comprises:
The ordering submodule is used for the service priority according to said other equipment, the beacon slot at said other equipment beacon places and/or the quantity of said other equipment application resources the equipment that the resource bid demand is arranged is sorted; Said have the equipment of resource bid demand to comprise said current device and said other equipment;
Calculating sub module is used for calculating the resource that said current device can be assigned to according to the result of said ordering.
10. equipment according to claim 8 is characterized in that, said first receiver module comprises:
Receive submodule, be used to receive the transmission of resource bid beacon frame or information and notify beacon frame;
Obtain the resource quantity submodule, be used for notifying the quantity that beacon frame obtains other equipment application resources described in the said resource requirement information from said resource bid beacon frame or information transmission.
11. each described equipment is characterized in that according to Claim 8-10, also comprises the discovery device, said discovery device comprises:
Second receiver module is used to receive the first device discovery beacon frame that other equipment send, and the parameter of the said first device discovery beacon frame comprises: the first Correspondent Node device identification; Not representing said other equipment in the device discovery procedure of participating in said receiving equipment when the said first Correspondent Node device identification is not empty, is not the sign of said receiving equipment for the empty said first Correspondent Node device identification;
Find module, be used for realizing discovery said other equipment according to the first Correspondent Node device identification of the said first device discovery beacon frame.
12. equipment according to claim 11 is characterized in that, said discovery module comprises:
Judge submodule, be used to judge whether once sent the second device discovery beacon frame to said other equipment;
Return submodule; The result who is used at said judge module is under the situation not; Return the 3rd device discovery beacon frame to said other equipment; To realize the discovery of said other equipment to said receiving equipment, wherein, the second communication opposite equip. in said the 3rd device discovery beacon frame is designated said other equipment mark;
Find submodule, the result who is used at said judge module is under the situation that is, realizes the discovery to said other equipment according to the said first device discovery beacon frame.
13. equipment according to claim 12 is characterized in that, the parameter of the said first device discovery beacon frame also comprises beacon frame available resources position, and said beacon frame available resources position is used to indicate the current resource that can send beacon frame; The said submodule that returns comprises:
Obtain the resource location submodule, be used for according to the first device discovery beacon frame position that obtains the beacon frame available resources that to send the 3rd device discovery beacon frame;
Send submodule, be used for the resource location that is not used in beacon frame available resources position, select idle time slot to send said the 3rd device discovery beacon frame.
14. equipment according to claim 8 is characterized in that, also comprises:
Sending module; Be used for next superframe at said current superframe; Notify beacon frame to said other equipment transmission information transmissions, said information is sent and is notified the position that beacon frame comprises that information is sent, and the position that said information is sent is used to indicate the resource location of the current use of said current device.
CN201210026398.7A 2012-02-07 2012-02-07 Resource negotiation method and apparatus in a kind of D2D communication CN102547871B (en)

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