CN104956763B - Method and apparatus for device-to-device communication - Google Patents
Method and apparatus for device-to-device communication Download PDFInfo
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- CN104956763B CN104956763B CN201480005898.XA CN201480005898A CN104956763B CN 104956763 B CN104956763 B CN 104956763B CN 201480005898 A CN201480005898 A CN 201480005898A CN 104956763 B CN104956763 B CN 104956763B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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Abstract
Method and apparatus of the one kind for executing device-to-device (D2D) communication by user equipment and supporting D2D communication by communication entity.D2D communication means may include: the ProSe ID for obtaining the user of the UE or UE that are used in D2D communication；It is generated and is expressed by using ProSe ID；Broadcast expression generated；Direct D2D connection request message is received from another UE by core net；Received message is directly connected in response to the direct D2D connection request message transmission；And D2D is executed with another UE and is communicated.Therefore, D2D communication can be effectively carried out.
Description
Technical field
At least some embodiments of the disclosure are related to the communication of the device-to-device (D2D) based on radio honeycomb communication system.
Background technique
D2D communication refers to that the communication pattern between a pair of of user equipment (UE), the communication pattern enable UE not having
With the help of cellular network with neighbouring UE communication and exchange data, and each UE for D2D communication is (hereinafter referred to
" D2D UE ") information of UE oneself is broadcasted to notify the information about its own to other UE.For notifying to close to other UE
In its own information, the information of UE oneself can identifier (ID) or UE for example including UE user ID (hereinafter
Referred to as " neighboring server (proximity service) ID ", " ProSe ID " or " D2D ID ").In addition, UE is by from neighbouring
Expression (expression) that UE is received obtains the information about other side UE, and found from this information it is interested right
When square UE, attempt to execute D2D communication.
Communication provider is attempted the licensed-in wave spectrum underused by using it or used in cellular network not
Radio resource of distribution etc. provides D2D communication to make a profit.Therefore, they are finding based on cellular network offer D2D communication
And control the mode of D2D service.
Accordingly, there exist the needs for such as under type: from the ID of the user of the ID or UE of the UE being used in D2D communication
The ID distributed in cellular networks is detected (for example, GUTI (Globally Unique Temporary UE Identity, the whole world
Unique interim UE identity)) to control the paging etc. of the corresponding UE in cellular network.
Summary of the invention
Technical problem
To solve deficiency discussed above, providing device-to-device (D2D) communication device and capable of efficiently executing D2D communication
Method be main target.
Solution
In accordance with an embodiment of the present disclosure, a kind of side executing device-to-device (D2D) communication by user equipment (UE) is provided
Method, this method comprises: obtaining the neighboring server identifier (ProSe ID) of the user of the UE or UE that are used in D2D communication；Pass through
Expression is generated using ProSe ID；Broadcast expression generated；Direct D2D connection request is received from another UE by core net
Message；Received message is directly connected in response to the direct D2D connection request message transmission；And D2D is executed with another UE and is communicated.
In accordance with an embodiment of the present disclosure, a kind of side executing device-to-device (D2D) communication by user equipment (UE) is provided
Method, this method comprises: receiving the expression broadcasted by another UE；Obtain the neighboring server mark of the user of another UE or another UE
It accords with (ProSe ID)；Direct D2D connection request message is sent to another UE by core net；It receives and connects in response to the direct D2D
Connect request message is directly connected to received message；And D2D is executed with another UE by using ProSe ID and is communicated.
In accordance with an embodiment of the present disclosure, a kind of method communicated by communication entity holding equipment to equipment (D2D) is provided, it should
Method includes: to receive request from the first user equipment (UE) to be directly connected to request message with what the 2nd UE was connect；To the 2nd UE
Send paging message；Request message is directly connected to the second UE forwarding after the 2nd UE is in connection status；It is received from the 2nd UE
Received message is directly connected in response to be directly connected to request message；And received message is directly connected to the first UE forwarding.
Before being described in detail below, illustrates and determine through some vocabulary and phrase used in this patent document
Justice can be advantageous: term " includes " and "comprising" and its derivative be meant that there is no limit include；Term "or" is to include
Property, be meant that and/or；Phrase " with ... be associated with " and " associated with it " and its meaning of derivative can be including, quilt
Be included in ... it is interior, with ... interconnect, include, be comprised in ... it is interior, be connected to or with ... connect, be couple to or with ... coupling
Connect, can be with ... communication, with ... cooperate, interweave, it is arranged side by side, close to, be tied to or with ... bind, have, have ...
Attribute etc.；And term " controller " is meant that arbitrary equipment, system or its component of at least one operation of control, in this way
Equipment can implement in hardware, firmware or software or at least two certain combination in them.It should be noted that with
The associated function of any specific controller can be it is centralization or distributed, or local or long-range.It provides special
Determine the definition of vocabulary and phrase with for patent document in the whole text, it should be understood by one skilled in the art that if not
In most cases, then in many cases, these definition are suitable for existing and future to these defined vocabulary
With the use of phrase.
Beneficial effect
According at least some embodiments of the disclosure, D2D communication can be effectively carried out.
Detailed description of the invention
In order to which the disclosure and its advantage is more fully understood, referring now to following description taken together with the accompanying drawings, in attached drawing, similarly
Reference label indicates same part:
Fig. 1 illustrates the examples of the framework of the D2D communication based on EPC network；
Fig. 2 illustrates the structure of expression according to an embodiment of the present disclosure；
Fig. 3 a and Fig. 3 b are the flow charts for illustrating D2D communication process according to an embodiment of the present disclosure；
Fig. 4 a and Fig. 4 b are the flow charts for illustrating D2D communication process according to another embodiment of the present disclosure；
Fig. 5 is the flow chart for illustrating ProSe ID repeating process according to an embodiment of the present disclosure；And
Fig. 6 is the flow chart for illustrating ProSe ID repeating process according to another embodiment of the present disclosure.
Specific embodiment
Fig. 1 to Fig. 6 and this patent discussed below disclose in be used to describe the various embodiments of disclosure principle be only
It is illustrative, it should not be explained in a manner of any restrictions disclosure range.It will be understood to those of skill in the art that this
Principle disclosed can be realized in the system or equipment arbitrarily suitably arranged.Hereinafter, with reference to the accompanying drawings to this is described in detail
Disclosed embodiment.In being described below of the disclosure, when the known function and configuration that are incorporated herein may make the master of the disclosure
When topic is not known quite, detailed description thereof will be omitted.Although in addition, being described herein evolution block core (evolved
Packet core, EPC) example of the network, that is, LTE network as cellular network, but embodiment of the disclosure can also be answered
Use the wireless data communication network other than LTE network.
At least some embodiments of the disclosure are related to following method and apparatus: wherein user equipment (hereinafter referred to " UE ")
It was found that being located at another other side UE in short distance, in order to communicate and with other side UE execution D2D by paging other side UE and other side UE
Data connection is established, and then executes D2D with other side UE and communicates.In addition, at least some embodiments of the disclosure are related to such as lower section
Method and device: the expression that wherein UE configures the UE oneself of UE broadcast finds other side UE will pass through cellular network.In addition, this public affairs
At least some embodiments opened are related to following method and apparatus: wherein when UE is attempted logical to communicate with other side UE execution D2D
When crossing cellular network paging other side UE or establishing the data connection for arriving other side UE, whether UE control communicates possible including D2D
Authorization.In addition, at least some embodiments of the disclosure are related to following method and apparatus: wherein UE is used in cellular network forwarding
The ID (neighboring server ID, ProSe ID or D2D ID) of UE in D2D communication.
In the following embodiment of the disclosure, it will be described in executing the method that the D2D based on EPC network is communicated.At this
In disclosed embodiment, although will mainly describe EPC network as example, any other type based on cellular network
Core can replace EPC.
Fig. 1 illustrates the examples of the framework of the D2D communication based on EPC network.Evolution block core 1 (EPC 1) 103 wraps
Include 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 evolution node B 1 (eNB1) 102.EPC2 114 is wrapped
Include HSS 111, S-GW 112, P-GW 113 and MME 110.UE2 109 is connected to EPC2 114 via eNB2 109.Two
A MME 104,110 116 or two EPC 103,104 that can be connected to each other can share a MME each other.
UE1 101 and UE2 108 are connected respectively to EPC1 103 and EPC2 114.Both UE1 101 and UE2 108 can be with
Execute D2D communication.Each UE (is received by the expression corresponding with its own of discovery channels broadcast to allow neighbouring UE to receive
Listen) expression.In this scene, UE1 101 broadcasts the expression 118 of UE oneself.
When receiving broadcasted expression 118, UE2 108 passes through the expression 118 received and detects UE1's 101
ProSe ID (or other ID).When the expectation of UE2 108 is communicated with the D2D of UE1 101, UE2 108 is executed in Cellular Networks
The operation of UE1 101 is found in network.As an example, UE2 108 forwards the letter about UE1 101 via eNB2 109 to EPC2
Thus breath, such as ProSe ID scan UE1 101.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 is notified to UE1 101 from UE2 via eNB1 102
108 receive D2D communication request.When UE1 101 receives D2D communication request, this notice received is successively transmitted to
UE2 108, to establish the data connection background (context) etc. between UE1 101 and UE2 108.Based on this, UE2
108 execute D2D RRC configuration with UE1 101, and then execute D2D with UE1 101 and communicate.
Fig. 2 illustrates the structure of expression according to an embodiment of the present disclosure.
In accordance with an embodiment of the present disclosure, UE, which can be generated and pass through discovery channels broadcast, has structure as shown in Figure 2
Expression, so as to receive for D2D communication license and execute D2D communication.
Referring to Fig. 2, expression includes identification information field 201, EPC information field 202 and user preference field 203.
UE can use the following contents to generate the identification information field 201 comprising ProSeID: using distributing to its
The value that ProSe ID is generated, the authorization key (Auth key), right received when obtaining to the authorization for using D2D communication service
The open information, etc. of other UE (public).UE can also generate the EPC of the information including the EPC network accessed about UE
Information field 202 and include user about UE preference or situation information user preference field 203.Expression can be by
It is configured to include the above field 201,202,203.For the purpose of the safety of ProSe ID, identification information field 201 can make
It is generated with hash function.In this case, the UE for receiving expression can be in an identical manner by raw using hash function
At the identification information of the ProSe ID in the list of friends of UE.Identification information identical with the identification information with receiving is corresponding
ProSe ID be the ProSe ID for having sent the other side UE by the UE expression received.
The EPC information field 202 of information including the EPC network accessed about UE may include the group that UE is accessed
The ID of group or the network equipment.As an example, EPC information field 202 may include ECGI (E-UTRAN Cell Global Identifier),
TAI (Tracking Area Identity, tracing area identity), GUMMEI (Globally Unique MME Identity,
Global unique MME identity) or they at least one of or all.Alternatively, EPC information field 202 can only include
A part of one of the above ID.As an example, EPC information field 202 can only include PLMN ID (Public Land
Mobile Network Identifier, public land mobile network identifier).
However, EPC information field 202 can also include the ID of the UE of the EPC network distribution accessed from UE, rather than UE
The ID of the group or the network equipment that are accessed.As an example, EPC information field 202 may include ECGI and CRNTI (Cell-
Radio Network Temporary Identifier, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI symbol).Alternatively, EPC information word
Section 202 may include at least one of following items: (whole world is uniquely faced by S-TMSI (SAE temporarily moved subscriber identity), GUTI
When UE identity) and IMSI (International Mobile Subscriber Identity, international mobile user identity).
Alternatively, EPC information field 202 can only include a part of one of above ID.
For safety purposes, encryption key shared by licensing process etc. can be used to encrypt including about UE
The EPC information field 202 of the information of the EPC network accessed and include user about UE information user preference word
Section 203.Licensing process is described in detail below in conjunction with the step 356 in Fig. 3 a or the step 456 in Fig. 4 a.
In addition, when the EPC information field 202 for the information for including the EPC network accessed about UE includes being accessed from UE
EPC network distribution UE ID when, in order to which different methods can be used safely.It is including the EPC net accessed about UE
In the EPC information field 202 of the information of network, the corresponding with the ID of UE of the ID of group or the network equipment that UE is accessed is excluded
Part can be encrypted for example, excluding the part M-TMSI of the part GUMMEI in GUTI or can be formed to include awarding
Weighted code.For ciphering process or in order to generate authorization code, it can be used and share between UE and EPC network to allow UE to connect
Enter the encryption key (for example, NAS security key etc.) of EPC network.By using the information or authorization key of encryption, Ke Yijian
Look into safety or integrality including the content in EPC information field 202.
As another embodiment of the present disclosure, will provide the description to following process: wherein UE access EPC network is to obtain
For D2D communication service authorization, the expression as described in the above embodiments of the disclosure is generated, by reference to from other side UE
What is received expresses to detect the ProSe ID of other side UE, and obtains the Cellular Networks of other side UE corresponding with the ProSe ID
Network ID is to page other side UE and establish the data connection with other side UE by cellular network.
Fig. 3 a and Fig. 3 b illustrate D2D communication process according to an embodiment of the present disclosure.Hereinafter, Fig. 3 a and Fig. 3 b will
It is collectively referred to as " Fig. 3 ".The embodiment of Fig. 3 is related to following situation: the EPC information field 202 wherein expressed includes group or network
The ID of equipment.
Referring to Fig. 3 a and Fig. 3 b, by identical process, UE1 320 and UE2 330 are respectively connected to EPC1 300 and EPC2
350, ProSe authorization is obtained, and generate expression, therefore the process in conjunction with performed by UE2 330 is described below to provide.
In step 352, in order to access EPC2 350, UE2 330 sends via eNB2 340 to EPC2 network 350 attached
Connect request message.Attachment request message includes indicating that UE 330 supports the ProSe ability instruction of D2D communication.
In step 353, the reservation message that is received based on the MME of EPC2 350 from HSS is executed for UE2's 330
Authorization.In this step, MME can receive ProSe_ID2 (the D2D ID of UE2 330) together with storage and management EPC2 350
In UE ID (EPC2ID) and ProSe_ID2 between map information.Certainly, map information can also be by other than MME
Network equipment storage and management.A kind of method is described below, wherein MME etc. obtains the map information in 2 network of EPC.
When the authorization success in step 353, in step 354, EPC2 350 sends attachment to UE2 330 and receives to disappear
Breath.Attachment received message includes indicating to execute based on subscription information that the ProSe of the result of the D2D authorization communicated is permitted to lead to
Know.When receiving attachment received message, in step 355, UE2 330 sends attachment to EPC2 350 and completes message.
The network of UE2330 enters process to be completed by step 355.In step 356, UE2 330 can execute matching for D2D communication
Set or for D2D communication service authorization.
In addition, UE2 330 generates the expression as described in the examples such as figure 2 above in step 358.Logical for D2D
During the authorization of telecommunications services, UE2 330 may be received in UE2 330 and generate workable Auth key when expression, and
Also it can receive the encryption key being used in a part that encryption is expressed or advanced (upper) for generating encryption key add
Key.
In step 351, UE1 320 enters EPC1 network 300.Step 351 corresponds to step 352 to 356, therefore this
In will omit detailed description.
In step 357, D2D ID, that is, ProSe_ID1, EPC information (EPC info_ of the UE1 320 by using UE
) etc. UE1 expression is generated.In step 359, UE1 320 starts to broadcast expression generated.
In step 360, UE2 330 is received by expression that UE1 320 is broadcasted to obtain from the expression received
ProSe_ID1.That is, UE2 330 can identify that the D2D ID of the transmitter UE accordingly expressed is ProSe_ID1.
UE2 330 obtains the ID in EPC1 300 by corresponding UE 320 equipment accessed from the expression received, for example, GUMMEI,
And determine that executing D2D with UE using ProSe_ID1 communicates.
UE2 330 has no knowledge about the EPC ID using the UE of ProSe_ID1.Therefore, in step 361, UE2 330 is passed through
It is directly connected to setting request message from eNB2 340 to the transmission of EPC2 350, is connect to establish D2D with ProSe_ID1 user.
Being directly connected to setting request message may include the information as acquired in UE2 330, that is, ProSe_ID1 and EPC info_
UE1.In addition, being directly connected to ProSe_ID2 the and EPC info_UE2 that setting request message can also include UE2 330.In step
In rapid 362, using EPC info_UE1, the MME of EPC2 350 can based between provider service agreement or other conditions
Whether may to check that the D2D between ProSe_ID1UE and ProSe_ID2UE in the network for being present in UE is communicated.
When determining that D2D communication is possible, in step 363, EPC2350 is according to EPC info_UE1 to 300 turns of EPC1
Hair is directly connected to setting request message.In step 364, EPC1 300 is by using including being directly connected to be arranged what is forwarded
ProSE_ID1 and EPC info_UE1 in request message detects the UE for being mapped to ProSe_ID1 in EPC1 300
ID, that is, EPC1ID.As an example, this scanning step can be executed by the MME of EPC1300.
In addition, based on EPC1ID corresponding with acquired ProSe_ID1, EPC1 300 can check corresponding UE i.e.
Whether UE1 320 is able to carry out D2D communication.
When checking that UE1 320 is in EMM idle mode, in step 365, the MME of EPC1 300 is to eNB1
310 send paging request message.In step 366, eNB1 310 sends paging message to UE1 320.Then, in step 367
In, UE1 320 executes the process for being switched to EMM connection mode.
Next, in step 368 and 369, EPC1 300 is via eNB1 310 to the UE1 in EMM connection mode
What 320 forwardings received is directly connected to setting request message.In step 368, EPC1 300 is sent to eNB1 310 to eNB1
310 notices are directly connected to that requested S1-AP message is arranged, and when receiving S1-AP message, and eNB1 310 prepares to use
In the resource allocation information etc. for being directly connected to setting.S1-AP message and RRC in step 368 and 369 reconfigure message
It may include being directly connected to setting request message.
It includes about the ProSe_ID2 and EPC being separately generated by MME that EPC1 300 can also be forwarded to UE1 320
The message of the information of info_UE2, and request message is arranged in indirect connection.Receive be directly connected to setting request message when,
In step 370, UE1 320 receives the D2D communication request from ProSe_ID2 UE.Therefore, in step 371 and 372,
UE1 320 sends the message for receiving D2D communication request via eNB1 310 to EPC1 300, that is, is directly connected to setting and receives to disappear
Breath.
Once receiving RRC in step 371 reconfigures message, eNB1 310 can use the S1- in step 372
Process in AP message and step 373 and 374 forwards what is prepared to be used for come the eNB2 340 accessed to other side UE2 330
It is directly connected to the resource allocation information etc. of setting.Alternatively, according to the modification embodiment of the disclosure, eNB1 310 can be straight
Connect the resource allocation information etc. for being directly connected to be arranged for forwarding and being prepared to other side eNB2 340.
In step 373, EPC1 300 is directly connected to setting received message to the forwarding of EPC2 350.In step 374 and 375
In, EPC2 350 is directly connected to setting received message to the forwarding of UE2 330.
In step 374, EPC2 350 to eNB2 340 send to eNB2 340 notice be directly connected to be arranged it is received
S1-AP message, and S1-AP message includes the resource allocation information etc. for being directly connected to setting.
It may include being directly connected to setting to receive that S1-AP message and RRC in step 374 and 375, which reconfigure message,
Message.
Then, radio bearer (D2D is directly connected to set up using the resource distributed by eNB1 310 and eNB2 340
Radio bearer).As an example, UE2 330 directly sends direct RRC connection request message to UE1 320 in step 376,
To establish RRC (Radio Resource Control, radio resource control) connection with UE1 320.In step 377,
UE1 320 sends direct RRC connection setting message to UE2 330.In step 378, UE2 330 is sent directly to UE1 320
Message is completed in RRC connection.Therefore, radio bearer is established.In step 379, UE1 320 and UE2 330 are by being built
Vertical radio bearer executes D2D communication.
The D2D communication process of Fig. 4 a and Fig. 4 b diagram according to another embodiment of the present disclosure.Hereinafter, Fig. 4 a and Fig. 4 b will
It is collectively referred to as " Fig. 4 ".In particular, the embodiment of Fig. 4 is related to following situation: the EPC information field 202 of expression includes distributing from EPC
UE ID.
Referring to Fig. 4 a and Fig. 4 b, by identical process, UE1420 and UE2 430 are respectively connected to EPC1 400 and EPC2
450, ProSe authorization is obtained, and generate expression, therefore the process in conjunction with performed by UE2 430 is described below to provide.
In step 452, in order to access EPC2 450, UE2 430 sends via eNB2 440 to EPC2 network 450 attached
Connect request message.Attachment request message includes indicating that UE 430 supports the ProSe ability instruction of D2D communication.
In step 453, the reservation message that is received based on the MME of EPC2 450 from HSS is executed for UE2's 430
Authorization.In this step, MME can receive ProSe_ID2 (the D2D ID of UE2 430) together with storage and management EPC2 450
In UE ID (EPC2ID) and ProSe_ID2 between map information.Certainly, map information can also be by other than MME
Network equipment storage and management.The method that the map information that a kind of MME etc. is obtained in 2 network of EPC is described below.
When the authorization success in step 453, in step 454, EPC2 450 sends attachment to UE2 430 and receives to disappear
Breath.Attachment received message includes indicating to execute based on subscription information that the ProSe of the result of the D2D authorization communicated is permitted to lead to
Know.When receiving attachment received message, in step 455, UE2 430 sends attachment to EPC2 450 and completes message.UE2
430 network enters process to be completed by step 455.In step 456, UE2 430 can execute the configuration for D2D communication
Or the authorization for D2D communication service.
In addition, in step 458, UE2 430 generates the expression as described in the examples such as figure 2 above.Logical for D2D
During the authorization of telecommunications services, UE2 430, which can receive, can generate the Auth key used when expression in UE2 430,
And it also can receive the encryption key being used in encryption a part expression or the superencipherment for generating encryption key be close
Key.
In step 451, UE1 420 enters EPC1 network 400.Step 451 corresponds to step 452 to 456, therefore this
In will omit detailed description.
In step 457, UE1 420 is by using D2D ID, that is, ProSe_ID1, the EPC info_UE1 of UE etc. next life
At expression.In step 459, UE1 420 starts to broadcast expression generated.
In step 460, UE2 430 is received by expression that UE1 420 is broadcasted to obtain from the expression received
ProSe_ID1.That is, UE2 430 can identify that the D2D ID of the transmitter UE accordingly expressed is ProSe_ID1.
UE2 430 obtains the ID (EPC ID_UE1) from the corresponding UE 420 distributed of EPC1 400, such as GUTI from the expression received,
And determine that executing D2D with UE using ProSe_ID1 communicates.
In step 461, UE2 430 is directly connected to setting request message to the transmission of EPC2 450 via eNB2 440, with
Just with use the UE of ProSe_ID1 to establish D2D to connect.Being directly connected to setting request message may include as acquired in UE2 430
Information, that is, ProSe_ID1 and EPC ID_UE1, and can also include UE oneself ProSe_ID2 and EPC ID_UE2.
In step 462, using EPC ID_UE1, the MME of EPC2 450 can based between provider service agreement or other
Whether part may to check that the D2D between ProSe_ID2 UE and ProSe_ID1 UE in the network for being present in MME is communicated.
When determining that D2D communication is possible, in step 463, EPC2 450 is forwarded according to EPC ID_UE1 to EPC1 400
It is directly connected to setting request message.In step 464, EPC1 400 can also be by using including being directly connected to what is forwarded
The EPC ID_UE1 being arranged in request message communicates to check whether corresponding UE i.e. UE1 420 is able to carry out D2D.
When checking UE1 420 and being in EMM idle mode, in step 465, the MME of EPC1 400 is to eNB1
410 send paging request message.In step 466, eNB1 410 sends paging message to UE1 420.In step 467,
UE1 420 executes the process 467 for being switched to EMM connection mode.
Then, in step 468 and 469, EPC1 400 is via eNB1 410 to the UE1 in the EMM connection mode
What 420 forwardings received is directly connected to setting request message.
In step 468, EPC1 400 to eNB1 410 send to eNB1 410 notice be directly connected to be arranged it is requested
S1-AP message, and when receiving S1-AP message, eNB1 410 prepares the resource allocation information for being directly connected to setting
Etc..It may include being directly connected to setting request to disappear that S1-AP message and RRC in step 468 and 469, which reconfigure message,
Breath.
It includes about ProSe_ID2 the and EPC ID_ being separately generated by MME that EPC1 400 can also be forwarded to UE1 420
The message of the information of UE2, and request message is arranged in indirect connection.Receive be directly connected to setting request message when, in step
In rapid 470, UE1 420 receives the D2D communication request from ProSe_ID2 UE.Therefore, in step 471 and 472, UE1
420 send the message for receiving D2D communication request via eNB1 410 to EPC1 400, that is, are directly connected to setting received message.
Once receiving RRC in step 471 reconfigures message, eNB1 410 can use the S1- in step 472
Process in AP message and step 473 and 474 forwards what is prepared to be used for come the eNB2 440 accessed to other side UE2 430
It is directly connected to the resource allocation information etc. of setting.Alternatively, according to the modification embodiment of the disclosure, once in step 471
In receive RRC and reconfigure message, eNB1 410 can directly be forwarded to other side eNB2 440 be prepared for direct
Connect the resource allocation information etc. of setting.
In step 473, EPC1 400 is directly connected to setting received message to the forwarding of EPC2 450.In step 474,
EPC2 450 sends to the notice of eNB2 440 to eNB2 440 and is directly connected to that received S1-AP message is arranged, and S1-AP disappears
Breath includes the resource allocation information etc. for being directly connected to setting.
It may include being directly connected to setting request that S1-AP message and RRC in step 474 and 475, which reconfigure message,
Message.
In step 474 and 475, EPC2 450 is directly connected to setting received message to the forwarding of UE2 430.In step 474
In, EPC2 450 sends to the notice of eNB2 440 to eNB2 440 and is directly connected to that received S1-AP message, and S1- is arranged
AP message includes the resource allocation information etc. for being directly connected to setting.
It may include being directly connected to setting to receive that S1-AP message and RRC in step 474 and 475, which reconfigure message,
Message.
Then, set up using the resource that eNB1 410 and eNB2 440 are distributed be directly connected to radio bearer (D2D without
Line electricity carrying).As an example, UE2 430 directly sends direct RRC connection request message to UE1 420 in step 476,
To establish RRC(radio resource control with UE1 420) it connect.In step 477, UE1 420 is sent directly to UE2 430
Message is arranged in RRC connection.In step 478, UE2 430 sends direct RRC connection to UE1 420 and completes message.Therefore, wirelessly
Electricity carrying is established.In step 479, UE1 420 and UE2 430 execute D2D by established radio bearer and communicate.
Hereinafter, as another embodiment of the present disclosure, it will be discussed in detail the EPC that ProSe ID is sent to EPC network
The process of equipment (for example, MME), the EPC equipment are responsible for ProSe ID and between the ID(EPC ID that EPC network distributes)
Mapping.
When MME to HSS send updated location information and the network of UE enter during from HSS receive about
When the subscription information of UE, ProSe id information can be sent to MME, such as above in the step 453 of the step 353 of Fig. 3 and Fig. 4
Described in.In this case, ProSe ID can be sent as follows: HSS is by wherein pre-stored ProSe ID points
Dispensing is responsible for the EPC equipment of mapping, for example, MME.
Fig. 5 illustrates ProSe ID repeating process according to an embodiment of the present disclosure.
Referring to Fig. 5, eNB 510 is between UE 500 and EPC 520.EPC 520 for example may include MME, S-GW, P-
GW, HSS etc..In step 521, UE 500 accesses EPC network.In step 522, ProSe configuration and ProSe authorization are held
Row.In the process, UE 500 obtains ProSe ID.In step 523, UE 500 sends individual NAS to EPC 520
(Network Access Stratum, network access layer) message, that is, ProSeID register request message.ProSeID registration is asked
Seeking message includes acquired ProSe ID.In step 524, EPC 520 is in response to ProSeID register request message to UE
500, which send ProSeID registration, completes message.It includes ProSe ID that message is completed in ProSeID registration.EPC 520 will be received
ProSe ID is transmitted to EPC equipment (for example, MME), which is responsible for ProSe ID and distributes to UE 500 from EPC 520
ID between mapping, and EPC equipment stores forwarded ProSe ID and between the ID that EPC 520 distributes to UE 500
Mapping relations.That is, EPC equipment is related to ID (the EPC ID) of UE 500 is distributed to from EPC 520 by ProSe ID
Connection, and store associated ProSe ID and EPC ID.
The ProSe ID repeating process of Fig. 6 diagram according to another embodiment of the present disclosure.
Referring to Fig. 6, eNB 610 is between UE 600 and EPC 620.EPC 620 for example may include MME, S-GW, P-
GW, HSS etc..In step 621, UE 600 sends attachment request message to EPC 620.Attachment request message includes ProSe
Ability instruction.In step 622, EPC 620 sends attachment received message to UE 600 in response to attachment request message.In step
In rapid 623, UE 600 determines whether UE 600 has effective ProSe_ID.In step 624, UE 600 is sent out to EPC 620
Attachment is sent to complete message.If UE 600 has possessed effective ProSe_ID, UE 600 is sent to be had including what UE 600 was possessed
Message is completed in the attachment for imitating ProSe_ID.ProSe_ID is forwarded to the EPC equipment (for example, MME) of EPC 620, which sets
The standby ID (EPC ID) for being responsible for mapping ProSe_ID and distributing to EPC network.In step 625, the storage of EPC equipment forwards
Mapping relations between ProSe ID and EPC ID.That is, EPC equipment distributes to UE by ProSe ID and from EPC 620
600 ID (EPC ID) is associated, and stores associated ProSe ID and EPC ID.
Industrial feasibility
With device in embodiment of the disclosure, that is, the composition entity of UE, eNB and EPC, for example, MME, s-GW,
P-GW and HSS can respectively include communication module and controller.The communication module of the entity of each UE, eNB and EPC send and
Signal is received to execute operation according to any one of the above embodiments of the disclosure.The entity of each UE, eNB and EPC
Controller control each device come according to any one of above embodiments of the disclosure operate.
It, can Xiang Yiwei those skilled in the art suggestion although describing the disclosure using exemplary embodiment
Various changes and modifications.Disclosure intention covers the such change and modification fallen within the scope of the appended claims.
Claims (20)
1. a kind of method that device-to-device (D2D) communication is executed by the first user equipment (UE), this method comprises:
Obtain the neighboring server identifier (ProSe of the user for first UE of the first UE or described being used in D2D communication
ID)；
The identifier of the first core net using the ProSe ID and for the first UE generates expression；
Expression generated is broadcasted, the expression includes the identifier of the ProSe ID and first core net；
Direct D2D connection request is received from the 2nd UE via first core net and the second core net for the 2nd UE
Message；
Via first core net and second core net in response to the direct D2D connection request message to described second
UE transmission is directly connected to received message；And
D2D is executed with the 2nd UE to communicate,
Wherein, the 2nd UE identifies first core net to transmit using the identifier of first core net
State direct D2D connection request message.
2. the method for claim 1, wherein the expression includes distributing to the first UE from first core net
ID.
3. method according to claim 2, wherein the expression further includes store the ProSe ID of the first UE and from institute
State the ID that the first core net distributes to the entity of mapping relations between the ID of the first UE.
4. method according to claim 2, wherein the expression further includes the ProSe ID for storing the user of the first UE
With the ID of the entity from the mapping relations between the ID that first core net distributes to the first UE.
5. a kind of method that device-to-device (D2D) communication is executed by second user equipment (UE), this method comprises:
Receive the expression broadcasted by the first UE；
The neighboring server identifier (ProSe ID) of the first UE is obtained based on the expression and for the of the first UE
The identifier of one core net；
The identifier based on first core net identifies that first core net disappears to transmit direct D2D connection request
Breath；
Via first core net for the first UE and the second core net for the 2nd UE to described first
UE sends the direct D2D connection request message；
Via first core net and second core net in response to the direct D2D connection request message from described first
UE reception is directly connected to received message；And
D2D is executed with the first UE using the ProSe ID to communicate.
6. method as claimed in claim 5, wherein the expression includes distributing to the first UE from first core net
ID.
7. method as claimed in claim 6, wherein the expression further includes store the ProSe ID of the first UE and from institute
State the ID that the first core net distributes to the entity of mapping relations between the ID of the first UE.
8. method as claimed in claim 6, wherein the expression further includes the ProSe ID for storing the user of the first UE
With the ID of the entity from the mapping relations between the ID that first core net distributes to the first UE.
9. a kind of method communicated in the first core network by communication entity holding equipment to equipment (D2D), this method comprises:
It receives via the second core network for requesting first UE associated with first core network and with described second
The connection of associated 2nd UE of core network is directly connected to request message；
Request message is directly connected to the first UE forwarding after the first UE is in connection status；
From the first UE receive in response to it is described be directly connected to request message be directly connected to received message；And
It is directly connected to received message to described in the 2nd UE forwarding via second core network,
Wherein, the identifier of the neighboring server identifier (ProSe ID) including the first UE and first core network
Expression is transmitted to the 2nd UE from the first UE, and the 2nd UE uses the mark of first core network
Symbol is to identify first core network to transmit direct D2D connection request message.
10. method as claimed in claim 9 further includes to the first UE distribution ID to be included in expression.
11. a kind of the first user equipment (UE) for executing device-to-device (D2D) communication, the first UE include:
Transceiver；And
Controller is coupled to the transceiver and is configured as controlling:
Obtain the neighboring server identifier (ProSe of the user for first UE of the first UE or described being used in D2D communication
ID),
The identifier of the first core net using the ProSe ID and for the first UE generates expression,
Expression generated is broadcasted, the expression includes the identifier of the ProSe ID and first core net；
Direct D2D connection request is received from the 2nd UE via first core net and the second core net for the 2nd UE
Message；And
Via first core net and second core net in response to the direct D2D connection request message to described second
UE transmission is directly connected to received message；
D2D is executed with the 2nd UE to communicate,
Wherein, the 2nd UE identifies first core net to transmit using the identifier of first core net
State direct D2D connection request message.
12. the first UE as claimed in claim 11, wherein the expression includes distributing to described the from first core net
The ID of one UE.
13. the first UE as claimed in claim 12, wherein it is described expression further include store the first UE ProSe ID and
From the ID of the entity of the mapping relations between the ID that first core net distributes to the first UE.
14. the first UE as claimed in claim 12, wherein the expression further includes the user for storing the first UE
The ID of ProSe ID and the entity from the mapping relations between the ID that first core net distributes to the first UE.
15. a kind of second user equipment (UE) for executing device-to-device (D2D) communication, the 2nd UE include:
Transceiver；And
Controller is coupled to the transceiver and is configured as controlling:
The expression broadcasted by the first UE is received,
The neighboring server identifier (ProSe ID) of the first UE is obtained based on the expression and for the of the first UE
The identifier of one core net,
The identifier based on first core net identifies that first core net disappears to transmit direct D2D connection request
Breath,
It is sent out via the first core net for the first UE and the second core net for the 2nd UE to the first UE
Send the direct D2D connection request message；
Via first core net and second core net in response to the direct D2D connection request message from described first
UE reception is directly connected to received message, and
D2D is executed with the first UE using the ProSe ID to communicate.
16. the 2nd UE as claimed in claim 15, wherein the expression includes distributing to described the from first core net
The ID of one UE.
17. the 2nd UE as claimed in claim 16, wherein it is described expression further include store the first UE ProSe ID and
From the ID of the entity of the mapping relations between the ID that first core net distributes to the first UE.
18. the 2nd UE as claimed in claim 16, wherein the expression further includes the user for storing the first UE
The ID of ProSe ID and the entity from the mapping relations between the ID that first core net distributes to the first UE.
19. a kind of communication entity that holding equipment is communicated to equipment (D2D) in the first core network, the communication entity include:
Receiver is configured as receiving via the second core network for requesting and first core network associated first
The connection of UE and twoth UE associated with second core network are directly connected to request message；
Controller, be configured as control after the first UE be in connection status to the first UE forwarding described in be directly connected to request disappear
Breath；
Wherein, the receiver is configured as receiving from the first UE and is directly connected to connect in response to the request message that is directly connected to
By message, and the controller is configured as control and is directly connected to via second core network to described in the 2nd UE forwarding
Received message,
Wherein, the identifier of the neighboring server identifier (ProSe ID) including the first UE and first core network
Expression is transmitted to the 2nd UE from the first UE, and the 2nd UE uses the mark of first core network
Symbol is to identify first core network to transmit direct D2D connection request message.
20. communication entity as claimed in claim 19, wherein the controller be configured as to the first UE distribute ID with
It is included in expression.
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| KR20130009353 | 2013-01-28 | ||
| KR10-2013-0009353 | 2013-01-28 | ||
| KR1020130083119A KR102112610B1 (en) | 2013-01-28 | 2013-07-15 | Method and apparatus for device to device communication |
| KR10-2013-0083119 | 2013-07-15 | ||
| PCT/KR2014/000795 WO2014116083A1 (en) | 2013-01-28 | 2014-01-28 | Method and apparatus for device to device communication |
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| KR102046111B1 (en) | 2013-03-29 | 2019-11-18 | 삼성전자주식회사 | Method and apparatus for device-to-device communication |
| KR102176921B1 (en) | 2014-05-16 | 2020-11-11 | 삼성전자 주식회사 | Method and apparatus for service continuity to mobile |
| KR102462368B1 (en) * | 2015-01-21 | 2022-11-02 | 삼성전자주식회사 | D2D discovery message sending system and method |
| CN106612489A (en) * | 2015-10-26 | 2017-05-03 | 中兴通讯股份有限公司 | A finding method, system and device for proximity-based service |
| JP2020010073A (en) * | 2016-11-07 | 2020-01-16 | シャープ株式会社 | Terminal, core network device, communication system, and communication control method |
| EP3659386B1 (en) * | 2017-07-25 | 2022-05-25 | Nokia Technologies Oy | Method and device for device-to-device (d2d) communication |
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| CN1550086A (en) * | 2001-07-18 | 2004-11-24 | ������������ʽ���� | Communication system and method |
| CN102857901A (en) * | 2012-09-12 | 2013-01-02 | 中兴通讯股份有限公司 | Device discovery method, device discovery processing method and device discovering processing device |
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