CN104956763A

CN104956763A - Method and apparatus for device to device communication

Info

Publication number: CN104956763A
Application number: CN201480005898.XA
Authority: CN
Inventors: 白令教; 裵范植; 赵晟娟
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2013-01-28
Filing date: 2014-01-28
Publication date: 2015-09-30
Anticipated expiration: 2034-01-28
Also published as: KR102112610B1; CN104956763B; KR20140096955A

Abstract

The invention discloses a method and apparatus for performing a device-to-device (D2D) communication by a user equipment and supporting D2D communication by a communication entity. The D2D communication method may include: acquiring ProSe ID of the UE or the UE's user, which is used in the D2D communication; generating an expression by using the ProSe ID; broadcasting the generated expression; receiving a direct D2D connection request message from another UE over a core network; sending a direct connection accept message in response to the direct D2D connection request message; and performing the D2D communication with another UE. Accordingly, D2D communication can be efficiently performed.

Description

For the method and apparatus of device-to-device communication

Technical field

The device-to-device (D2D) that at least some embodiment of the present disclosure relates to based on radio honeycomb communication system communicates.

Background technology

D2D communication refers to the communication pattern between a pair subscriber equipment (UE), this communication pattern makes UE can communicate and swap data with contiguous UE under the help not having cellular network, and broadcasts the information of UE oneself to notify the information about himself to other UE for each UE (hereinafter referred to " D2D UE ") of D2D communication.For notify to other UE about himself information, the information of UE oneself such as can comprise the ID of the identifier (ID) of UE or the user of UE (hereinafter referred to " neighboring server (proximity service) ID ", " ProSe ID " or " D2D ID ").In addition, UE obtains the information about the other side UE by the expression (expression) received from contiguous UE, and when finding interested the other side UE in from then on information, attempts performing D2D communication.

Communication provider is attempted the licensed-in wave spectrum by using it to underuse or uses unappropriated radio resource etc. in cellular network to provide D2D to communicate to make a profit.Therefore, they provide D2D to communicate and the mode of control D2D service in searching based on cellular network.

Therefore, there are the needs for such as under type: from the ID of the user of ID or UE of the UE be used in D2D communication, detect the ID that distributes in cellular networks (such as, GUTI (Globally Unique Temporary UE Identity, the unique interim UE identity in the whole world)) to control the paging of the corresponding UE in cellular network etc.

Summary of the invention

Technical problem

For solving the deficiency of above discussion, device-to-device (D2D) communicator is provided to be main target with the method that D2D communicates efficiently can be performed.

Solution

According to embodiment of the present disclosure, there is provided a kind of method communicated to equipment (D2D) by subscriber equipment (UE) actuating equipment, the method comprises: the neighboring server identifier (ProSe ID) obtaining the user of UE or UE be used in D2D communication; Expression is generated by using ProSe ID; Broadcast the expression generated; Direct D2D connection request message is received from another UE by core net; Send in response to this direct D2D connection request message and directly accept message; And perform D2D with another UE and communicate.

According to embodiment of the present disclosure, provide a kind of method communicated to equipment (D2D) by subscriber equipment (UE) actuating equipment, the method comprises: receive the expression broadcasted by another UE; Obtain the neighboring server identifier (ProSe ID) of the user of another UE or another UE; Direct D2D connection request message is sent to another UE by core net; The direct connection received in response to this direct D2D connection request message accepts message; And communicate by using ProSe ID to perform D2D with another UE.

According to embodiment of the present disclosure, provide a kind of method communicated to equipment (D2D) by communication entity support equipment, the method comprises: the direct connection request message receiving the connection of request and the 2nd UE from first user equipment (UE); Beep-page message is sent to the 2nd UE; Direct connection request message is forwarded to the second UE after the 2nd UE is in connection status; The direct connection received in response to direct connection request message from the 2nd UE accepts message; And directly accept message to a UE forwarding.

Before being described in detail below, it can be favourable for setting forth the definition running through some vocabulary and the phrase used in this patent document: term " comprises " and " comprising " and derivative implication thereof are hard-core comprising; Comprising property of term "or", implication be and/or; Phrase " with ... association " and the implication of " associated with it " and derivative thereof can be comprise, be included in ... in, with ... interconnect, comprise, be comprised in ... in, be connected to or with ... connect, be couple to or with ... couple, can be with ... communication, with ... cooperation, interweave, side by side, close to, be tied to or with ... bind, have, have ... attribute etc.; And term " controller " implication controls at least one arbitrary equipment operated, system or its parts, such equipment can be implemented in hardware, firmware or software or certain combination of at least two in them.It should be noted that the function be associated with any specific controller can be centralized or distributed, or in this locality or long-range.There is provided the definition of specific vocabulary and phrase for patent document in the whole text, those of ordinary skill in the art are to be understood that, if not in most of the cases, so in many cases, these definition be applicable to existing and in the future to these define the use of vocabulary and phrase.

Beneficial effect

According at least some embodiment of the present disclosure, D2D communication can be performed efficiently.

Accompanying drawing explanation

In order to more completely understand the disclosure and advantage thereof, refer now to following description taken together with the accompanying drawings, in accompanying drawing, same reference number represents same part:

Fig. 1 illustrates the example of the framework that the D2D based on EPC network communicates;

Fig. 2 illustrates the structure of the expression according to embodiment of the present disclosure;

Fig. 3 a and Fig. 3 b is the flow chart of diagram according to the D2D communication process of embodiment of the present disclosure;

Fig. 4 a and Fig. 4 b is the flow chart of diagram according to the D2D communication process of another embodiment of the present disclosure;

Fig. 5 is the flow chart of diagram according to the ProSe ID repeating process of embodiment of the present disclosure; And

Fig. 6 is the flow chart of diagram according to the ProSe ID repeating process of another embodiment of the present disclosure.

Embodiment

The various embodiments being used for describing disclosure principle during Fig. 1 to Fig. 6 discussed below and this patent disclose are only illustrative, should not make an explanation in the mode of any restriction disclosure scope.It will be understood to those of skill in the art that principle of the present disclosure can realize in the system or equipment suitably arranged arbitrarily.Hereinafter, embodiment of the present disclosure is described in detail with reference to the accompanying drawings.In describing below of the present disclosure, when the known function be herein incorporated and configuration may make theme of the present disclosure quite not know, the detailed description to them will be omitted.In addition, although describe evolution block core (evolved packet core at this, EPC) network and LTE network are as the example of cellular network, but embodiment of the present disclosure also can be applied to the wireless data communication network except LTE network.

At least some embodiment of the present disclosure relates to following method and apparatus: wherein subscriber equipment (hereinafter referred to " UE ") finds another the other side UE being positioned at short distance, communicate to perform D2D with the other side UE and set up data cube computation by paging the other side UE and the other side UE, and performing D2D with the other side UE subsequently and communicate.In addition, at least some embodiment of the present disclosure relates to following method and apparatus: wherein UE configures the expression of the UE oneself that this UE broadcasts to find the other side UE by cellular network.In addition, at least some embodiment of the present disclosure relates to following method and apparatus: wherein when UE in order to the other side UE perform D2D communicate and attempt by cellular network paging the other side UE or be established to the data cube computation of the other side UE time, UE controls to comprise the whether possible mandate of D2D communication.In addition, at least some embodiment of the present disclosure relates to following method and apparatus: wherein UE forwards the ID (neighboring server ID, ProSe ID or D2D ID) of the UE be used in D2D communication to cellular network.

In following examples of the present disclosure in detail, the method performing and communicate based on the D2D of EPC network will be described.In embodiment of the present disclosure, although exemplarily will mainly describe EPC network, the server based on honeycomb of other type any can replace EPC.

Fig. 1 illustrates the example of the framework that the D2D based on EPC network communicates.Evolution block core 1 (EPC 1) 103 comprises home subscriber server (home subscriber server, HSS) 105, gateway (serving gateway, S-GW) 106, grouped data network gateway (packet data network gateway, PDN-GW; P-GW) 107 and Mobility Management Entity (MME) 104.UE 1 101 is connected to EPC 1 103 via enode b 1 (eNB1) 102.EPC2 114 comprises HSS 111, S-GW 112, P-GW 113 and MME 110.UE2 109 is connected to EPC2 114 via eNB2 109.Two MME 104,110 can be connected to each other 116, or two EPC 103,104 can share a MME each other.

UE1 101 and UE2 108 is connected respectively to EPC1 103 and EPC2 114.UE1 101 and both UE2 108 can perform D2D and communicate.The expression that each UE passes through to find that channels broadcast is corresponding with himself is to allow contiguous UE to receive (listening to) this expression.In this scene, UE1 101 broadcasts the expression 118 of UE oneself.

When receiving broadcasted expression 118, UE2 108 detects the ProSe ID (or other ID) of UE1 101 by the expression 118 received.When UE2 108 expects to communicate with the D2D of UE1 101, UE2 108 performs the operation being used for finding UE1 101 in cellular networks.Exemplarily, UE2 108 forwards about the information of UE1 101 via eNB2 109 to EPC2, and such as ProSe ID scans UE1 101 thus.Such scan request can be transmitted to EPC1 103 via EPC2 114.EPC1 103 detects the ID of the UE1 101 in EPC1 103.EPC1 103 notifies to receive D2D communication request from UE2 108 to UE1 101 via eNB1 102.When UE1 101 accepts D2D communication request, the notice accepted for this is transmitted to UE2 108 successively, thus sets up data cube computation background (context) between UE1 101 and UE2 108 etc.Based on this, UE2 108 and UE1 101 perform D2D RRC and configure, and perform D2D with UE1 101 subsequently and communicate.

Fig. 2 illustrates the structure of the expression according to embodiment of the present disclosure.

According to embodiment of the present disclosure, UE can generate and by finding that channels broadcast has the expression of structure as shown in Figure 2, so that the license received for D2D communication and perform D2D communication.

With reference to Fig. 2, express and comprise identification information field 201, EPC information field 202 and user preference field 203.

UE can utilize following content to generate the identification information field 201 comprising ProSeID: use the value that the ProSe ID distributing to it produces, the authorization key (Auth key) received when obtaining the mandate to use D2D communication service, the information open to other UE (public), etc.The EPC information field 202 that UE can also generate the information comprising the EPC network accessed about UE and the user preference field 203 comprised about the preference of the user of UE or the information of situation.Expression can be configured to comprise above field 201,202,203.In order to the object of the safety of ProSe ID, identification information field 201 can use hash function to generate.In this case, receiving the UE expressed can in an identical manner by utilizing the identification information of the ProSe ID in the list of friends of hash function generation UE.The corresponding ProSe ID of the identification information identical with the identification information received is the ProSe ID of the other side UE having sent the expression received by UE.

The EPC information field 202 comprising the information of the EPC network accessed about UE can comprise the ID of group that UE accesses or the network equipment.Exemplarily, EPC information field 202 can comprise ECGI (E-UTRAN Cell Global Identifier), TAI (Tracking Area Identity, tracing area identity), GUMMEI (Globally Unique MME Identity, the whole world unique MME identity) or in them at least one or all.Alternatively, EPC information field 202 only can comprise a part of one of above ID.Exemplarily, EPC information field 202 only can comprise PLMN ID (Public Land Mobile Network Identifier, public land mobile network identifier).

But EPC information field 202 can also comprise the ID of the UE of the EPC network allocation accessed from UE, but not the ID of the group that accesses of UE or the network equipment.Exemplarily, EPC information field 202 can comprise ECGI and CRNTI (Cell-Radio Network Temporary Identifier, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI accords with).Alternatively, EPC information field 202 can comprise every as follows at least one: S-TMSI (SAE temporarily moved subscriber identity), GUTI (the unique interim UE identity in the whole world) and IMSI (International Mobile Subscriber Identity, international mobile subscriber identity).Alternatively, EPC information field 202 only can comprise a part of one of above ID.

In order to the object of safety, the user preference field 203 of the EPC information field 202 that can use encryption key shared by licensing process etc. to encrypt the information comprising the EPC network accessed about UE and the information comprising the user about UE.Licensing process is described in detail below in conjunction with the step 456 in the step 356 in Fig. 3 a or Fig. 4 a.

In addition, when the EPC information field 202 of the information comprising the EPC network accessed about UE comprises the ID of the UE of the EPC network allocation accessed from UE, in order to safety can use diverse ways.In the EPC information field 202 of information comprising the EPC network accessed about UE, the part corresponding with the ID of UE of the ID of the group that eliminating UE accesses or the network equipment, such as, get rid of the M-TMSI part of the GUMMEI part in GUTI, can be encrypted or can be formed to comprise authorization code.For ciphering process or in order to generate authorization code, can be used between UE and EPC network and sharing with the encryption key (such as, NAS safe key etc.) allowing UE to access EPC network.By using information or the authorization key of encryption, safety or the integrality of the content be included in EPC information field 202 can be checked.

As another embodiment of the present disclosure, description to following process will be provided: wherein UE accesses EPC network to obtain the mandate for D2D communication service, generate as the expression described in above embodiment of the present disclosure, by reference to the expression received from the other side UE to detect the ProSe ID of the other side UE, and the cellular network ID obtaining the other side UE corresponding with this ProSe ID sets up with paging the other side UE and by cellular network and the data cube computation of the other side UE.

Fig. 3 a and Fig. 3 b illustrates the D2D communication process according to embodiment of the present disclosure.Hereinafter, Fig. 3 a and Fig. 3 b will be collectively referred to as " Fig. 3 ".The embodiment of Fig. 3 relates to following situation: the EPC information field 202 of wherein expressing comprises the ID of group or the network equipment.

With reference to Fig. 3 a and Fig. 3 b, by identical process, UE1 320 and UE2 330 accesses EPC1 300 and EPC2 350 respectively, obtains ProSe and authorizes, and generate expression, therefore provide following description by conjunction with the process performed by UE2 330.

In step 352, attach request message is sent via eNB2 340 to EPC2 network 350 in order to access EPC2 350, UE2 330.Attach request message comprises the ProSe ability instruction that instruction UE 330 supports D2D to communicate.

In step 353, the MME based on EPC2 350 performs mandate for UE2 330 from the subscribe messages that HSS receives.In this step, MME can receive ProSe_ID2 (the D2D ID of UE2 330) together with the map information between the UE ID (EPC2ID) in store and management EPC2 350 and ProSe_ID2.Certainly, map information also can by the network equipment store and management except MME.To describe a kind of method below, wherein MME etc. obtains the map information in EPC 2 network.

When the mandate in step 353 is successful, in step 354, EPC2 350 sends attachment to UE2 330 and accepts message.Accept message and comprise instruction performs the result of the mandate for D2D communication ProSe notification of permit based on subscription information.When receiving attachment and accepting message, in step 355, UE2 330 sends attachment to EPC2 350 and completes message.The network process that enters of UE2330 is completed by step 355.In step 356, UE2 330 can perform for the configuration of D2D communication or the mandate for D2D communication service.

In addition, in step 358, UE2 330 generates the expression described in embodiment as above Fig. 2.In the process of the mandate for D2D communication service, UE2 330 may be received in UE2 330 and generates spendable Auth key when expressing, and the encryption key in also can receiving the part being used in encryption expression or senior (upper) encryption key for generating encryption key.

In step 351, UE1 320 enters EPC1 network 300.Step 351 corresponds to step 352 to 356, therefore will omit detailed description here.

In step 357, UE1 320 generates expression by using D2D ID and ProSe_ID1, EPC information (EPC info_UE1) etc. of UE.In step 359, UE1 320 goes on the air generated expression.

In step 360, UE2 330 receives the expression broadcasted by UE1 320 to obtain ProSe_ID1 from the expression received.That is, UE2 330 can identify the D2D ID of the transmitter UE of corresponding expression is ProSe_ID1.UE2 330 obtains the ID of the equipment accessed by corresponding UE 320 EPC1 300 from the expression received, such as, and GUMMEI, and determine that using ProSe_ID1 and UE to perform D2D communicates.

UE2 330 does not also know the EPC ID of the UE using ProSe_ID1.Therefore, in step 361, UE2 330 sends directly connection via eNB2 340 to EPC2 350 and arranges request message, is connected to set up D2D with ProSe_ID1 user.Direct connection arranges request message can comprise the information obtained by UE2 330, that is, ProSe_ID1 and EPC info_UE1.In addition, ProSe_ID2 and EPC info_UE2 request message being set and can also comprising UE2 330 is directly connected.In step 362, use EPC info_UE1, whether the D2D that the MME of EPC2 350 can check between ProSe_ID1UE and the ProSe_ID2UE that is present in the network of UE based on the service agreement between provider or other condition communicates and may.

When determining D2D communication possibility, in step 363, EPC2350 forwards directly connection according to EPC info_UE1 to EPC1 300 and arranges request message.In step 364, EPC1 300 is included in forwarded direct connection ProSE_ID1 and the EPC info_UE1 arranged in request message detects the UE ID being mapped to ProSe_ID1 in EPC1 300, that is, EPC1ID by using.Exemplarily, this scanning step can be performed by the MME of EPC1300.

In addition, can check whether corresponding UE and UE1 320 can perform D2D communication based on the EPC1ID corresponding with obtained ProSe_ID1, EPC1 300.

When checking out that UE1 320 is in EMM idle pulley, in step 365, the MME of EPC1 300 sends paging request message to eNB1 310.In step 366, eNB1 310 sends beep-page message to UE1 320.Subsequently, in step 367, UE1 320 performs the process for being switched to EMM connection mode.

Next, in step 368 and 369, EPC1 300 forwards to the UE1 320 be in EMM connection mode the direct connection received via eNB1 310 and arranges request message.In step 368, EPC1 300 sends to eNB1 310 and notifies that direct connection arranges requested S1-AP message to eNB1 310, and when receiving S1-AP message, eNB1 310 prepares resource allocation information being used for directly connecting setting etc.S1-AP message in step 368 is with 369 and RRC reconfigure message and can comprise directly being connected and arrange request message.

EPC1 300 also can forward the message of the information comprised about ProSe_ID2 and the EPC info_UE2 being divided out generation by MME to UE1 320, and indirect connection arranges request message.When receiving direct connection and arranging request message, in step 370, UE1 320 accepts the D2D communication request from ProSe_ID2UE.Therefore, in step 371 and 372, UE1 320 sends the message accepting D2D communication request to EPC1 300 via eNB1 310, that is, directly connect to arrange to accept message.

Once receive RRC to reconfigure message in step 371, eNB1 310 just can use the S1-AP message in step 372 and step 373 and the process in 374 to the eNB2 340 that the other side UE2 330 accesses forward prepare for direct resource allocation information being connected setting etc.Alternatively, according to revision for execution of the present disclosure example, eNB1 310 can directly to the other side eNB2 340 forward prepare for direct resource allocation information connecting setting etc.

In step 373, EPC1 300 forwards directly to connect to arrange to EPC2 350 and accepts message.In step 374 and 375, EPC2 350 forwards directly to connect to arrange to UE2 330 and accepts message.

In step 374, EPC2 350 sends to eNB2 340 and notifies directly to connect to arrange received S1-AP message to eNB2 340, and S1-AP message comprises for direct resource allocation information connecting setting etc.

S1-AP message in step 374 is with 375 and RRC reconfigure message and can comprise directly being connected to arrange and accept message.

Subsequently, use the resource of being distributed by eNB1 310 and eNB2 340 to set up and be directly connected radio bearer (D2D radio bearer).Exemplarily, in step 376, UE2 330 sends direct RRC connection request message directly to UE1 320, connects to set up RRC (Radio Resource Control, radio resource controls) with UE1 320.In step 377, UE1 320 sends direct RRC connection to UE2 330 and arranges message.In step 378, UE2 330 sends direct RRC to UE1 320 and has connected message.Therefore, radio bearer is established.In step 379, UE1 320 and UE2 330 pass through set up radio bearer execution D2D and communicate.

Fig. 4 a and Fig. 4 b illustrates the D2D communication process according to another embodiment of the present disclosure.Hereinafter, Fig. 4 a and Fig. 4 b will be collectively referred to as " Fig. 4 ".Especially, the embodiment of Fig. 4 relates to following situation: the EPC information field 202 of expression comprises the ID of the UE distributed from EPC.

With reference to Fig. 4 a and Fig. 4 b, by identical process, UE1420 and UE2 430 accesses EPC1 400 and EPC2 450 respectively, obtains ProSe and authorizes, and generate expression, therefore provide following description by conjunction with the process performed by UE2 430.

In step 452, attach request message is sent via eNB2 440 to EPC2 network 450 in order to access EPC2 450, UE2 430.Attach request message comprises the ProSe ability instruction that instruction UE 430 supports D2D to communicate.

In step 453, the MME based on EPC2 450 performs mandate for UE2 430 from the subscribe messages that HSS receives.In this step, MME can receive ProSe_ID2 (the D2D ID of UE2 430) together with the map information between the UE ID (EPC2ID) in store and management EPC2 450 and ProSe_ID2.Certainly, map information also can by the network equipment store and management except MME.A kind of MME of description etc. is obtained the method for the map information in EPC 2 network below.

When the mandate in step 453 is successful, in step 454, EPC2 450 sends attachment to UE2 430 and accepts message.Accept message and comprise instruction performs the result of the mandate for D2D communication ProSe notification of permit based on subscription information.When receiving attachment and accepting message, in step 455, UE2 430 sends attachment to EPC2 450 and completes message.The network process that enters of UE2 430 is completed by step 455.In step 456, UE2 430 can perform for the configuration of D2D communication or the mandate for D2D communication service.

In addition, in step 458, UE2 430 generates the expression described in embodiment as above Fig. 2.In the process of the mandate for D2D communication service, UE2 430 can receive the Auth key that can use when generating express at UE2 430, and also can receive be used in an encryption part express in encryption key or superencipherment key for generating encryption key.

In step 451, UE1 420 enters EPC1 network 400.Step 451 corresponds to step 452 to 456, therefore will omit detailed description here.

In step 457, UE1 420 generates expression by using D2D ID and ProSe_ID1, EPC info_UE1 of UE etc.In step 459, UE1 420 goes on the air generated expression.

In step 460, UE2 430 receives the expression broadcasted by UE1 420 to obtain ProSe_ID1 from the expression received.That is, UE2 430 can identify the D2D ID of the transmitter UE of corresponding expression is ProSe_ID1.UE2 430 obtains the ID (EPC ID_UE1) of the corresponding UE 420 distributed from EPC1 400 from the expression received, such as GUTI, and determines that using ProSe_ID1 and UE to perform D2D communicates.

In step 461, UE2 430 sends directly connection via eNB2 440 to EPC2 450 and arranges request message, is connected to set up D2D with the UE of use ProSe_ID1.Direct connection arranges request message can comprise the information obtained by UE2 430, that is, ProSe_ID1 and EPC ID_UE1, and can comprise ProSe_ID2 and the EPC ID_UE2 of UE oneself.In step 462, use EPC ID_UE1, based on the service agreement between provider or other condition, the MME of EPC2 450 can check whether possible the ProSe_ID2 UE be present in the network of MME communicates with the D2D between ProSe_ID1 UE.

When determining D2D communication possibility, in step 463, EPC2 450 forwards directly connection according to EPC ID_UE1 to EPC1 400 and arranges request message.In step 464, EPC1 400 also can be included in the forwarded direct connection EPC ID_UE1 arranged in request message by use and check whether corresponding UE and UE1 420 can perform D2D communication.

When being checked through UE1 420 and being in EMM idle pulley, in step 465, the MME of EPC1 400 sends paging request message to eNB1 410.In step 466, eNB1 410 sends beep-page message to UE1 420.In step 467, UE1 420 performs the process 467 for being switched to EMM connection mode.

Subsequently, in step 468 and 469, EPC1 400 forwards to the UE1 420 be in EMM connection mode the direct connection received via eNB1 410 and arranges request message.

In step 468, EPC1 400 sends to eNB1 410 and notifies that direct connection arranges requested S1-AP message to eNB1 410, and when receiving S1-AP message, eNB1 410 prepares resource allocation information being used for directly connecting setting etc.S1-AP message in step 468 is with 469 and RRC reconfigure message and can comprise directly being connected and arrange request message.

EPC1 400 also can forward the message of the information comprised about ProSe_ID2 and the EPC ID_UE2 being divided out generation by MME to UE1 420, and indirect connection arranges request message.When receiving direct connection and arranging request message, in step 470, UE1 420 accepts the D2D communication request from ProSe_ID2UE.Therefore, in step 471 and 472, UE1 420 sends the message accepting D2D communication request to EPC1 400 via eNB1 410, that is, directly connect to arrange to accept message.

Once receive RRC to reconfigure message in step 471, eNB1 410 just can use the S1-AP message in step 472 and step 473 and the process in 474 to the eNB2 440 that the other side UE2 430 accesses forward prepare for direct resource allocation information being connected setting etc.Alternatively, according to revision for execution of the present disclosure example, once receive RRC to reconfigure message in step 471, eNB1 410 just can directly to the other side eNB2 440 forwarding prepare for direct resource allocation information connecting setting etc.

In step 473, EPC1 400 forwards directly to connect to arrange to EPC2 450 and accepts message.In step 474, EPC2 450 sends to eNB2 440 and notifies directly to connect to arrange received S1-AP message to eNB2 440, and S1-AP message comprises for direct resource allocation information connecting setting etc.

S1-AP message in step 474 is with 475 and RRC reconfigure message and can comprise directly being connected and arrange request message.

In step 474 and 475, EPC2 450 forwards directly to connect to arrange to UE2 430 and accepts message.In step 474, EPC2 450 sends to eNB2 440 and notifies directly to connect to arrange received S1-AP message to eNB2 440, and S1-AP message comprises for direct resource allocation information connecting setting etc.

S1-AP message in step 474 is with 475 and RRC reconfigure message and can comprise directly being connected to arrange and accept message.

Subsequently, use eNB1 410 to set up with the resource that eNB2 440 distributes and be directly connected radio bearer (D2D radio bearer).Exemplarily, in step 476, UE2 430 sends direct RRC connection request message directly to UE1 420, controls to set up RRC(radio resource with UE1 420) be connected.In step 477, UE1 420 sends direct RRC connection to UE2 430 and arranges message.In step 478, UE2 430 sends direct RRC to UE1 420 and has connected message.Therefore, radio bearer is established.In step 479, UE1 420 and UE2 430 pass through set up radio bearer execution D2D and communicate.

Hereinafter, as another embodiment of the present disclosure, will discuss ProSe ID in detail and be sent to the process of the EPC equipment (such as, MME) of EPC network, described EPC equipment is responsible for ProSe ID and the ID(EPC ID from EPC network allocation) between mapping.

When MME send the positional information after upgrading to HSS and enter at the network of UE receive subscription information about UE from HSS in process time, ProSe id information can be sent to MME, as described in the step 453 of the above step 353 at Fig. 3 and Fig. 4.In this case, ProSe ID can be sent as follows: the ProSe ID of wherein pre-stored is distributed to the EPC equipment being responsible for mapping by HSS, such as, and MME.

Fig. 5 illustrates the ProSe ID repeating process according to embodiment of the present disclosure.

With reference to Fig. 5, eNB 510 between UE 500 and EPC 520.EPC 520 such as can comprise MME, S-GW, P-GW, HSS etc.In step 521, UE 500 accesses EPC network.In step 522, ProSe configuration and ProSe authorize and are performed.In the process, UE 500 obtains ProSe ID.In step 523, UE 500 sends independent NAS (Network Access Stratum, network access layer) message, that is, ProSeID register request message to EPC 520.ProSeID register request message comprises obtained ProSe ID.In step 524, EPC 520 sends ProSeID in response to ProSeID register request message to UE 500 and has registered message.ProSeID has registered message and has comprised ProSe ID.The ProSe ID received is transmitted to EPC equipment (such as by EPC 520, MME), this EPC equipment is responsible for the mapping between ProSe ID and the ID distributing to UE 500 from EPC 520, and the mapping relations between the ProSe ID that forwards of EPC device storage and the ID distributing to UE 500 from EPC 520.That is, ProSe ID is associated with the ID (EPC ID) distributing to UE 500 from EPC 520 by EPC equipment, and stores the ProSe ID and EPC ID that are associated.

Fig. 6 diagram is according to the ProSe ID repeating process of another embodiment of the present disclosure.

With reference to Fig. 6, eNB 610 between UE 600 and EPC 620.EPC 620 such as can comprise MME, S-GW, P-GW, HSS etc.In step 621, UE 600 sends attach request message to EPC 620.Attach request message comprises the instruction of ProSe ability.In step 622, EPC 620 sends attachment in response to attach request message to UE 600 and accepts message.In step 632, UE 600 determines whether UE 600 has effective ProSe_ID.In step 624, UE 600 sends attachment to EPC 620 and completes message.If UE 600 has had effective ProSe_ID, then UE 600 has sent the attachment comprising effective ProSe_ID that UE 600 has and has completed message.ProSe_ID is forwarded to the EPC equipment (such as, MME) of EPC 620, and this EPC equipment is responsible for the ID (EPC ID) mapping ProSe_ID and distribute to EPC network.In step 625, EPC device storage forward ProSe ID and EPC ID between mapping relations.That is, ProSe ID is associated with the ID (EPC ID) distributing to UE 600 from EPC 620 by EPC equipment, and stores the ProSe ID and EPC ID that are associated.

Industrial usability

Be used in the device in embodiment of the present disclosure, that is, UE, eNB, and the formation entity of EPC, such as, MME, s-GW, P-GW and HSS, can comprise communication module and controller respectively.The communication module transmission of the entity of each UE, eNB and EPC and Received signal strength are so that according to any one executable operations in above embodiment of the present disclosure.The controller of the entity of each UE, eNB and EPC controls each device to be come according to any one operation in above embodiment of the present disclosure.

Although utilized exemplary embodiment to describe the disclosure, various change and amendment can be advised to those skilled in the art.Disclosure intention contains and falls into such change within the scope of claims and amendment.

Claims

1. the method communicated to equipment (D2D) by subscriber equipment (UE) actuating equipment, the method comprises:

Obtain the neighboring server identifier (ProSe ID) of the user of UE or UE be used in D2D communication;

Use described ProSe ID to generate to express;

Broadcast the expression generated;

Direct D2D connection request message is received from another UE via core net;

Send in response to described direct D2D connection request message and directly accept message; And

Perform D2D with another UE to communicate.

2. the method for claim 1, wherein described expression comprises the ID distributing to described UE from described core net.

3. method as claimed in claim 2, wherein, described expression also comprises the ID of the entity of the mapping relations between ProSe ID and the ID distributing to described UE from described core net storing described UE.

4. method as claimed in claim 2, wherein, described expression also comprises the ID of the entity of the mapping relations between the ProSe ID of the user storing described UE and the ID distributing to described UE from described core net.

5. the method communicated to equipment (D2D) by subscriber equipment (UE) actuating equipment, the method comprises:

Receive the expression broadcasted by UE;

Obtain the neighboring server identifier (ProSe ID) of the user of described UE or described UE;

Direct D2D connection request message is sent to described UE via core net;

The direct connection received in response to described direct D2D connection request message accepts message; And

Use described ProSe ID and described UE to perform D2D to communicate.

6. method as claimed in claim 5, wherein, described expression comprises the ID distributing to described UE from described core net.

7. method as claimed in claim 6, wherein, described expression also comprises the ID of the entity of the mapping relations between ProSe ID and the ID distributing to described UE from described core net storing described UE.

8. method as claimed in claim 6, wherein, described expression also comprises the ID of the entity of the mapping relations between the ProSe ID of the user storing described UE and the ID distributing to described UE from described core net.

9. the method communicated to equipment (D2D) by communication entity support equipment, the method comprises:

Receive for asking the direct connection request message with the connection of the 2nd UE from first user equipment (UE);

Beep-page message is sent to the 2nd UE;

Direct connection request message is forwarded to the second UE after the 2nd UE is in connection status;

The direct connection received in response to described direct connection request message from the 2nd UE accepts message; And

Forward described direct connection to a UE and accept message.

10. method as claimed in claim 9, also comprises and distributes ID to be included in expression to a UE.

The subscriber equipment (UE) that 11. 1 kinds of actuating equipments communicate to equipment (D2D), described UE comprises:

Controller, is configured to the neighboring server identifier (ProSe ID) of the user controlling to obtain UE or UE be used in D2D communication, uses described ProSe ID to generate and expresses, and controls to broadcast the expression generated;

Receiver, is configured to receive direct D2D connection request message via core net from another UE; And

Transmitter, is configured to send in response to described direct D2D connection request message directly accept message;

Wherein, described controller controls to perform D2D with another UE and communicates.

12. UE as claimed in claim 11, wherein, described expression comprises the ID distributing to described UE from described core net.

13. UE as claimed in claim 12, wherein, described expression also comprises the ID of the entity of the mapping relations between ProSe ID and the ID distributing to described UE from described core net storing described UE.

14. UE as claimed in claim 12, wherein, described expression also comprises the ID of the entity of the mapping relations between the ProSe ID of the user storing described UE and the ID distributing to described UE from described core net.

The subscriber equipment (UE) that 15. 1 kinds of actuating equipments communicate to equipment (D2D), described UE comprises:

Receiver, is configured to receive the expression broadcasted by UE;

Controller, is configured to the neighboring server identifier (ProSe ID) controlling the user obtaining described UE or described UE; And

Transmitter, is configured to send direct D2D connection request message via core net to described UE;

Wherein, described receiver is configured to receive and accepts message in response to the direct connection of described direct D2D connection request message, and described controller is configured to control to use described ProSe ID to perform D2D with described UE communicates.

16. UE as claimed in claim 15, wherein, described expression comprises the ID distributing to described UE from described core net.

17. UE as claimed in claim 16, wherein, described expression also comprises the ID of the entity of the mapping relations between ProSe ID and the ID distributing to described UE from described core net storing described UE.

18. UE as claimed in claim 16, wherein, described expression also comprises the ID of the entity of the mapping relations between the ProSe ID of the user storing described UE and the ID distributing to described UE from described core net.

The communication entity that 19. 1 kinds of support equipments communicate to equipment (D2D), this communication entity comprises:

Receiver, is configured to receive for asking the direct connection request message with the connection of the 2nd UE from first user equipment (UE);

Transmitter, is configured to send beep-page message to the 2nd UE; And

Controller, is configured to control to forward described direct connection request message to the second UE after the 2nd UE is in connection status;

Wherein, the direct connection that described receiver is configured to receive in response to described direct connection request message from the 2nd UE accepts message, and described controller is configured to control to accept message to the described direct connection of a UE forwarding.

20. communication entities as claimed in claim 19, wherein, described controller is configured to distribute ID to be included in expression to a UE.