CN103582157A - Parameter notification method, equipment and system - Google Patents
Parameter notification method, equipment and system Download PDFInfo
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- CN103582157A CN103582157A CN201210249684.XA CN201210249684A CN103582157A CN 103582157 A CN103582157 A CN 103582157A CN 201210249684 A CN201210249684 A CN 201210249684A CN 103582157 A CN103582157 A CN 103582157A
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Abstract
The invention discloses a parameter notification method, equipment and a system so that D2D communication between user equipment in a designated group is realized under the control of a mobile communication network. The method is that: subscription information of user equipment UE is acquired by an MME, the currently subscribed group of the UE is confirmed according to subscription information, and safety context relevant parameters of the group are acquired and then sent to the UE via a base station.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of parameter Notification Method, equipment and system.
Background technology
At Long Term Evolution (Long Term Evolution, LTE) in system, what take is network centralized control, be subscriber equipment (User Equipment, UE) up-downgoing data are all carried out sending and receiving under the control of network, do not have direct communication link between UE and UE, and communication between the two need to be forwarded and be controlled by network, do not allow UE to send voluntarily upstream data, as shown in accompanying drawing 1a yet.
In prior art, simple device-to-device (Device to Device, D2D) communication, refer between terminal and terminal by technology direct communications such as bluetooth, Wireless Fidelitys (Wifl), this communication utilization be to exempt to authorize the resource of frequency range, be user's self behavior, be not subject to management and the control of Virtual network operator, application scenarios is more limited.
If D2D technology is incorporated in mobile communication carrier's network, can realize another kind of D2D communication pattern, under this communication pattern, between terminal, allow to carry out certain direct communication, a terminal can be by D2D mode directly from other terminal acquired information, these DCLs are set up under can or assisting in network control, and the basis of carrying out D2D communication between terminal is that close terminal is found.
As shown in accompanying drawing 1b, evolved base station (eNodeB under the control of core net (CN), be called for short eNB) set up up/down Serial Communication link (Uplink/Downlink) so that UE1, UE2 are configured with UE1, UE2 respectively, two UE after configuration can communicate by letter based on configuration information D2D.
Visible, in prior art, in cellular system, do not support by D2D mode, to carry out direct communication between UE, and can make cellular system support that a necessary condition of the D2D communication pattern between UE is exactly that D2D both sides must obtain D2D resource allocation information in advance.
Summary of the invention
The invention provides a kind of parameter Notification Method, equipment and system, in order to realize the D2D communication between the subscriber equipment in particular demographic under mobile communications network is controlled.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A Notification Method, comprising:
Mobility Management Entity MME obtains the CAMEL-Subscription-Information of user equipment (UE);
Described MME determines the current signing group of described UE according to described CAMEL-Subscription-Information, obtains the safe context relevant parameter of described group and sends to described UE via base station.
, comprising:
Acquiring unit, for obtaining the CAMEL-Subscription-Information of user equipment (UE);
Processing unit, for determine the current signing group of described UE according to described CAMEL-Subscription-Information, obtains the safe context relevant parameter of described group and sends to described UE by base station.
, comprising:
Receiving element, the safe context relevant parameter of the current signing group of user equipment (UE) sending for receiving mobility management entity MME;
Transmitting element, for sending to described UE by described safe context relevant parameter.
, comprising:
Receiving element, for receiving safe context relevant parameter and the device-to-device D2D resource information of the current signing group of subscriber equipment of network side transmission;
Processing unit, be used for according to described safe context relevant parameter computation key, based on described key other subscriber equipment to described group in the definite D2D resource of described D2D resource information, send message, or in the definite D2D resource of described D2D resource information, monitor the message of other UE in described group.
A reporting system, comprising:
Mobility Management Entity MME, obtains the CAMEL-Subscription-Information of user equipment (UE), according to described CAMEL-Subscription-Information, determines the current signing group of described UE, and the safe context relevant parameter that obtains described group sends to base station;
Base station, for receiving the described safe context relevant parameter of described MME transmission and sending to described UE;
User equipment (UE), the described safe context relevant parameter sending for receiving described base station.
Based on technique scheme, in the embodiment of the present invention, mobile management realizes determines the current signing group of this subscriber equipment according to the CAMEL-Subscription-Information of subscriber equipment, obtain after the safe context relevant parameter of this group, via base station, this safe context relevant parameter is sent to subscriber equipment, thereby subscriber equipment can be communicated with other subscriber equipment in group by the safe context relevant parameter based on obtaining, and the D2D having realized under mobile communications network is controlled between the subscriber equipment in particular demographic communicates by letter.
Accompanying drawing explanation
Fig. 1 a is the system architecture schematic diagram that in prior art, UE communicates by letter under network control;
Fig. 1 b is the network side system architecture schematic diagram that D2D communication is carried out in configuration to UE in prior art;
Fig. 2 is the method flow diagram of parameter notice in the embodiment of the present invention;
Fig. 3 is the method flow diagram of the present invention's the first specific embodiment;
Fig. 4 is the method flow diagram of the present invention's the second specific embodiment;
Fig. 5 is the method flow diagram of the present invention's the 3rd specific embodiment;
Fig. 6 is the method flow diagram of the present invention's the 4th specific embodiment;
Fig. 7 is the structural representation of network equipment in the embodiment of the present invention;
Fig. 8 is the structural representation of another network equipment in the embodiment of the present invention;
Fig. 9 is the structural representation of subscriber equipment in the embodiment of the present invention;
Figure 10 is the configuration diagram of parameter reporting system in the embodiment of the present invention.
Embodiment
In order to realize the D2D communication between the subscriber equipment in particular demographic under mobile communications network is controlled, the embodiment of the present invention provides a kind of parameter Notification Method, equipment and system.
The core concept of the embodiment of the present invention is: at UE and network side, set up in the process that RRC is connected, network side is determined the current signing group of this UE, and configure this group communication resource used for this UE, in this resource, at least comprise safe context relevant parameter, UE calculates and obtains after key according to this safe context relevant parameter, based on this key, communicates by letter with other UE in group.
In following examples, the evolved base station (eNB) of take describes as example, in practical application, for the base station of other type, also can be used for the present invention, and specific implementation process is identical with the specific implementation process of eNB.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
The detailed process of the parameter Notification Method providing in the embodiment of the present invention as shown in Figure 2, is as follows:
Step 201: Mobility Management Entity (Mobility Management Entity, MME) obtains the CAMEL-Subscription-Information of UE.
Wherein, MME obtains the CAMEL-Subscription-Information of UE from local subscribed services device (Home Subscriber Server, HSS).
Particularly, at UE and eNB, set up in the process of Radio Resource control (Radio ResourceControl, RRC) connection, eNB initiates UE to carry out to MME the request message of initial configuration; MME receives the CAMEL-Subscription-Information that obtains UE after this request message from HSS, and this CAMEL-Subscription-Information comprises the identification information of the group that UE is signing.
Step 202:MME determines the current signing group of UE according to the CAMEL-Subscription-Information of UE, obtains the safe context relevant parameter of this group and sends to this UE via base station.
In the present embodiment, when base station sends to UE by the safe context relevant parameter of the current signing group of UE, the D2D resource information of ，Jiang Gai group sends to UE.This D2D resource information is for determining the D2D public resource of network reservation.
Preferably, base station sends to UE by air interface by the D2D resource information of the safe context relevant parameter ，Gai group of the current signing group of UE.
Wherein, base station sends to the D2D resource information of the safe context relevant parameter of the current signing group of UE and this group after UE, and other UE that UE gets final product in Yu Gai group communicates.
Be specially: UE is according to the safe context relevant parameter computation key of current signing group, the key that UE obtains based on calculating other UE in the definite D2D resource Shang Xianggai group of D2D resource information sends message, or in the definite D2D resource of D2D resource information, monitors the message of other UE in this group.
Wherein, in safe context relevant parameter, at least comprise cipher key (Security Key).
For example, UE is according to length information of the sign (ID) of the carrying of the count value (COUNT) of the cipher key of 128 bits that comprise in safe context relevant parameter, 32 bits, 5 bits, transmission direction for 1 bit and the key stream of needs etc., utilize 128-EEA(EPS Encryption Algorithm, Evolved Packet System cryptographic algorithm) 1 or the security algorithm such as 128-EEA2 calculate and obtain key.In practical application, also can adopt other security algorithm to calculate and obtain key the relevant parameter carrying in safe context, only for for example, be not intended to limit the present invention herein.In practical application, according to also needing to carry the supplementary needing in other computational process in concrete employing security algorithm safe context relevant parameter, the supplementary that different security algorithms needs is not identical yet, and the supplementary of carrying in safe context relevant parameter can be set for the security algorithm of concrete employing.
In the present embodiment, if the signing group of the UE in connected state changes, HSS is after the CAMEL-Subscription-Information obtaining after changing, this CAMEL-Subscription-Information is after changing offered to MME, MME determines the signing group of UE after changing according to this CAMEL-Subscription-Information after changing, again the group before UE and UE change is configured.
Particularly, MME determines the signing group of UE after changing according to the CAMEL-Subscription-Information of UE, for the UE signing new safe context relevant parameter of group allocation before changing, and send to UE other UE of signing group before changing via base station, thereby avoid UE out of date to continue to monitor the data of this group, improve the fail safe of group.
Particularly, MME determines the signing group of UE after changing according to the CAMEL-Subscription-Information of UE, by base station notice UE without monitoring or send data in D2D resource corresponding to signing group before changing at it.
Preferably, base station by air interface by for UE before changing the new safe context relevant parameter of signing group allocation send to this UE other UE of signing group before changing.
Preferably, MME by S1 interface by the safe context relevant parameter of the current signing group of UE or for UE before changing the new safe context relevant parameter of signing group allocation send to base station.
The detailed process that by four specific embodiments, the embodiment of the present invention is realized to the D2D communication in group below describes.
Specific embodiment one, as shown in Figure 3, when the UE that belongs to certain group initially accesses, for UE distributes the detailed process of D2D resource and safe context relevant parameter as follows:
Between step 301:UE and eNB, setting up RRC is connected;
Step 302:eNB sends UE initialization information (UE initial message) request message to MME;
Step 303:MME obtains the CAMEL-Subscription-Information of UE from HSS;
Step 304:MME is known the current signing A of group of this UE according to the CAMEL-Subscription-Information of UE;
Step 305:MME sends initialization context and sets up request (initial context setup request) message to eNB, the safe context relevant parameter that at least comprises the A of group in this message, in practical application, can also comprise the sign of the current affiliated A of group of UE;
Step 306:eNB obtains the safe context relevant parameter of the A of group from the initial context setup request message that MME sends, and connects and in reprovision (RRC connection reconfiguration) message, carry the D2D resource information of network reservation and the safe context relevant parameter of the A of group sends to UE at RRC;
Step 307:UE obtains the safe context relevant parameter that obtains D2D resource information and the A of group from this connection reallocation message, completes RRC and connects reprovision process and initialization context process of establishing.
Afterwards, UE can be in the definite D2D resource of the D2D resource information of obtaining, utilize the safe context relevant parameter of the A of group to calculate the key obtaining to communicate by letter with other UE in the A of group.
Specific embodiment two, as shown in Figure 4, if the signing group's change of the UE in connected state, network side is specific as follows to the processing procedure of this UE and other UE in connected state:
Through the process identical with above-mentioned steps 301 ~ step 307, UE1 obtains D2D resource information and the safe context relevant parameter of its signing A of group;
The signing group of step 308:UE1 changes, and no longer belongs to the A of group;
The subscription data of this UE1 of step 309:HSS notice MME changes, and no longer belongs to the A of group;
Step 310:MME is the change about the signing group of UE1 by S1 interface notice eNB;
Step 311:eNB notifies UE1 need in the D2D of the A of group resource, not monitor or send data by air interface;
Step 312:MME is that the A of group after upgrading distributes new safe context relevant parameter, and sends to eNB by S1 interface;
This new safe context relevant parameter of the UE2 in connected state comprising in the A of group of step 313:eNB after by air interface update notifications.
The 3rd specific embodiment, as shown in Figure 5, group's change as signing in the UE in connected state, network side is specific as follows to the processing procedure of this UE and other Idle state UE:
After the process identical with above-mentioned steps 301 ~ step 311, for the processing procedure of the Idle state UE comprising in the A of group after upgrading, see following steps;
Step 501:MME, for the A of group after upgrading distributes new safe context relevant parameter, sends to eNB by paging (paging) message, the UE of the A of group after this paging message is upgraded for paging in Idle state, i.e. UE2;
Step 502:eNB is interface paging UE2 aloft;
The paging of step 503:UE2 response eNB, initiates RRC to eNB and connects the request of foundation;
After step 504:eNB and UE2 set up RRC and be connected, set up S1 interface and connect between MME and eNB, MME, setting up in the process that S1 interface is connected with eNB, sends to eNB by the new safe context relevant parameter of the A of the group distribution for after upgrading;
The new safe context relevant parameter that step 505:eNB distributes the A of group for after upgrading by air interface sends to UE2.
Specific embodiment four, as shown in Figure 6, UE obtains other UE in the safe context relevant parameter Hou，Yu Gai group of its current signing group, and to carry out the detailed process of D2D communication as follows from network side:
Step 601: according to the process of above-mentioned specific embodiment one, network side is D2D resource information and the safe context relevant parameter that UE1 in the A of group and UE2 send the A of group;
The safe context relevant parameter of the A of group that step 602:UE1 sends according to eNB respectively with UE2 calculates the key that in the A of group, D2D communicates by letter;
In the definite D2D resource of the D2D resource information of the step 603:UE1 HeUE2 A of group, utilize the key that calculates acquisition to carry out safe communication, be that the key that transmitting terminal utilization calculates is encrypted, the secret key decryption that receiving terminal utilization calculates, has guaranteed the fail safe of group communication.
Based on same inventive concept, a kind of network equipment is also provided in the embodiment of the present invention, and the concrete enforcement of this network equipment can, referring to the concrete enforcement of MME in said method, repeat part and repeat no more, as shown in Figure 7, this network equipment mainly comprises with lower unit:
Acquiring unit 701, for obtaining the CAMEL-Subscription-Information of UE;
Wherein, processing unit specifically for: by S1 interface, the safe context relevant parameter of group is sent to base station.
Wherein, processing unit also for: according to CAMEL-Subscription-Information, determine the signing group of UE after changing, be the UE signing new safe context relevant parameter of group allocation before changing, and send to UE other UE of signing group before changing by base station.
Wherein, processing unit specifically for: by S1 interface, will send to base station for the new safe context relevant parameter of group allocation.
Based on same inventive concept, a kind of network equipment is also provided in the embodiment of the present invention, and the concrete enforcement of this network equipment can, referring to the concrete enforcement of eNB in said method, repeat part and repeat no more, as shown in Figure 8, this network equipment mainly comprises with lower unit:
Receiving element 801, for receiving the safe context relevant parameter of the current signing group of UE of MME transmission;
Transmitting element 802, for sending to UE by this safe context relevant parameter.
Wherein, transmitting element also for: when safe context relevant parameter is sent to UE, the D2D resource information of ，Jiang group sends to UE.
Wherein, described transmitting element specifically for: by air interface, by safe context relevant parameter, and the D2D resource information of group sends to UE.
Wherein, receiving element is specifically for the safe context relevant parameter that receives group by S1 interface.
Wherein, receiving element also for: receive MME the signing group of UE after changing, be the new safe context relevant parameter of signing before changing group allocation;
Transmitting element also for: this new safe context relevant parameter is sent to UE other UE of signing group before changing.
Wherein, transmitting element also for: notice UE is without monitoring or send data in D2D resource corresponding to the group signing before changing.
Wherein, transmitting element specifically for: by air interface, this new safe context relevant parameter is sent to UE other UE of signing group before changing.
Wherein, receiving element is specifically for the new safe context relevant parameter that receives group by S1 interface.
Based on same inventive concept, the embodiment of the present invention also provides a kind of subscriber equipment, and the concrete enforcement of this subscriber equipment can repeat part and repeat no more referring to the concrete enforcement of UE in said method, and as shown in Figure 9, this subscriber equipment mainly comprises with lower unit:
Receiving element 901, for receiving safe context relevant parameter and the D2D resource information of the current signing group of subscriber equipment of network side transmission;
Based on same inventive concept, the embodiment of the present invention also provides a kind of parameter reporting system, and the concrete enforcement of this system can repeat part and repeat no more referring to the concrete enforcement of said method, and as shown in Figure 10, this system mainly comprises:
MME, for obtaining the CAMEL-Subscription-Information of UE, determines the current signing group of UE according to this CAMEL-Subscription-Information, and the safe context relevant parameter that obtains this group sends to base station;
Base station, for receiving the safe context relevant parameter of MME transmission and sending to UE;
UE, the safe context relevant parameter sending for receiving base station.
Based on technique scheme, in the embodiment of the present invention, mobile management realizes determines the current signing group of this subscriber equipment according to the CAMEL-Subscription-Information of subscriber equipment, obtain after the safe context relevant parameter of this group, via base station, this safe context relevant parameter is sent to subscriber equipment, thereby subscriber equipment can be communicated with other subscriber equipment in group by the safe context relevant parameter based on obtaining, and the D2D having realized under mobile communications network is controlled between the subscriber equipment in particular demographic communicates by letter.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (23)
1. a parameter Notification Method, is characterized in that, comprising:
Mobility Management Entity MME obtains the CAMEL-Subscription-Information of user equipment (UE);
Described MME determines the current signing group of described UE according to described CAMEL-Subscription-Information, obtains the safe context relevant parameter of described group and sends to described UE via base station.
2. the method for claim 1, is characterized in that, when described base station sends to described UE by described safe context relevant parameter, also comprises:
The device-to-device D2D resource information of described group is sent to described UE.
3. method as claimed in claim 2, is characterized in that, described base station is by air interface by described safe context relevant parameter, and the D2D resource information of described group sends to described UE.
4. method as claimed in claim 3, is characterized in that, by base station, described safe context relevant parameter and described D2D resource information is sent to after described UE, comprising:
Described UE is according to described safe context relevant parameter computation key;
Described UE sends message to other UE in described group based on described key in the definite D2D resource of described D2D resource information, or in the definite D2D resource of described D2D resource information, monitors the message of other UE in described group.
5. method as claimed in claim 2, is characterized in that, MME obtains after the CAMEL-Subscription-Information of user equipment (UE), also comprises:
Described MME determines the signing group of described UE after changing according to described CAMEL-Subscription-Information, is the described UE signing new safe context relevant parameter of group allocation before changing, and sends to described UE other UE of signing group before changing via described base station.
6. method as claimed in claim 5, is characterized in that, described MME determines the signing group of described UE after changing according to described CAMEL-Subscription-Information, also comprises:
By described base station, notify described UE without monitoring or send data in D2D resource corresponding to the group signing before changing.
7. method as claimed in claim 5, is characterized in that, described base station sends to described UE other UE of signing group before changing by air interface by described new safe context relevant parameter.
8. the method as described in claim 1-4 any one, is characterized in that, described MME sends to described base station by S1 interface by described safe context relevant parameter.
9. the method as described in claim 5,6 or 7, is characterized in that, described MME sends to described base station by S1 interface by described new safe context relevant parameter.
10. a network equipment, is characterized in that, comprising:
Acquiring unit, for obtaining the CAMEL-Subscription-Information of user equipment (UE);
Processing unit, for determine the current signing group of described UE according to described CAMEL-Subscription-Information, obtains the safe context relevant parameter of described group and sends to described UE by base station.
11. equipment as claimed in claim 10, is characterized in that, described processing unit also for:
According to described CAMEL-Subscription-Information, determine the signing group of described UE after changing, be the described UE signing new safe context relevant parameter of group allocation before changing, and send to described UE other UE of signing group before changing by described base station.
12. equipment as claimed in claim 10, is characterized in that, described processing unit specifically for:
By S1 interface, described safe context relevant parameter is sent to described base station.
13. equipment as claimed in claim 11, is characterized in that, described processing unit specifically for:
By S1 interface, described new safe context relevant parameter is sent to described base station.
14. 1 kinds of network equipments, is characterized in that, comprising:
Receiving element, the safe context relevant parameter of the current signing group of user equipment (UE) sending for receiving mobility management entity MME;
Transmitting element, for sending to described UE by described safe context relevant parameter.
15. equipment as claimed in claim 14, is characterized in that, described transmitting element also for:
When described safe context relevant parameter is sent to described UE, the device-to-device D2D resource information of described group is sent to described UE.
16. equipment as claimed in claim 15, is characterized in that, described transmitting element specifically for:
By air interface, by described safe context relevant parameter, and the D2D resource information of described group sends to described UE.
17. equipment as claimed in claim 15, is characterized in that, described receiving element also for: receive described MME the signing group of described UE after changing, be the new safe context relevant parameter of signing group allocation before changing;
Described transmitting element also for: described new safe context relevant parameter is sent to described UE other UE of signing group before changing.
18. equipment as claimed in claim 17, is characterized in that, described transmitting element also for:
Notify described UE without monitoring or send data in D2D resource corresponding to the group signing before changing.
19. equipment as claimed in claim 17, is characterized in that, described transmitting element specifically for:
By air interface, described new safe context relevant parameter is sent to described UE other UE of signing group before changing.
20. equipment as described in claim 14,15 or 16, is characterized in that, described receiving element specifically for:
By S1 interface, receive described safe context relevant parameter.
21. equipment as described in claim 17,18 or 19, is characterized in that, described receiving element specifically for:
By S1 interface, receive described new safe context relevant parameter.
22. 1 kinds of subscriber equipmenies, is characterized in that, comprising:
Receiving element, for receiving safe context relevant parameter and the device-to-device D2D resource information of the current signing group of subscriber equipment of network side transmission;
Processing unit, be used for according to described safe context relevant parameter computation key, based on described key other subscriber equipment to described group in the definite D2D resource of described D2D resource information, send message, or in the definite D2D resource of described D2D resource information, monitor the message of other UE in described group.
23. 1 kinds of parameter reporting systems, is characterized in that, comprising:
Mobility Management Entity MME, for obtaining the CAMEL-Subscription-Information of user equipment (UE), determines the current signing group of described UE according to described CAMEL-Subscription-Information, and the safe context relevant parameter that obtains described group sends to base station;
Base station, for receiving the described safe context relevant parameter of described MME transmission and sending to described UE;
User equipment (UE), the described safe context relevant parameter sending for receiving described base station.
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