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Parameter notification method, equipment and system

A technology of equipment and parameters, applied in the field of communication, can solve problems such as not supporting direct communication of UE

Active Publication Date: 2014-02-12
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the cellular system in the prior art does not support direct communication between UEs through D2D, but a necessary condition for enabling the cellular system to support the D2D communication mode between UEs is that both D2D parties must obtain D2D resource configuration information in advance

Method used

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  • Parameter notification method, equipment and system

Examples

Experimental program
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specific Embodiment 1

[0058] Specific embodiment one, as appended image 3 As shown, when a UE belonging to a certain group initially accesses, the specific process of allocating D2D resources and security context-related parameters to the UE is as follows:

[0059] Step 301: Establish an RRC connection between UE and eNB;

[0060] Step 302: The eNB sends a UE initialization message (UE initial message) request message to the MME;

[0061] Step 303: the MME obtains the subscription information of the UE from the HSS;

[0062] Step 304: The MME learns the group A that the UE is currently subscribed to according to the subscription information of the UE;

[0063] Step 305: The MME sends an initial context setup request (initial context setup request) message to the eNB. The message includes at least the security context related parameters of the group A. In practical applications, it may also include the identity of the group A to which the UE currently belongs;

[0064] Step 306: The eNB obtains ...

specific Embodiment 2

[0067] Specific embodiment two, as attached Figure 4 As shown, if the subscribed group of the UE in the connected state changes, the network side processes the UE and other UEs in the connected state as follows:

[0068] Through the same process as the above steps 301 to 307, UE1 obtains the D2D resource information and security context related parameters of the group A it subscribes to;

[0069] Step 308: The group subscribed by UE1 changes and no longer belongs to group A;

[0070] Step 309: The HSS notifies the MME that the UE1's subscription data has changed and it no longer belongs to group A;

[0071] Step 310: The MME notifies the eNB of the change of the subscribed group of the UE1 through the S1 interface;

[0072] Step 311: the eNB notifies UE1 through the air interface that it does not need to monitor or send data on the D2D resource of group A;

[0073] Step 312: The MME allocates new security context-related parameters for the updated group A, and sends them t...

specific Embodiment 4

[0082] Specific embodiment four, as attached Figure 6 As shown, after the UE obtains the security context-related parameters of its currently subscribed group from the network side, the specific process of performing D2D communication with other UEs in the group is as follows:

[0083] Step 601: According to the process of the above-mentioned specific embodiment 1, the network side sends D2D resource information and security context related parameters of group A to UE1 and UE2 in group A;

[0084] Step 602: UE1 and UE2 respectively calculate the key of D2D communication in group A according to the security context related parameters of group A sent by eNB;

[0085] Step 603: UE1 and UE2 use the calculated key to perform secure communication on the D2D resources determined by the D2D resource information of group A, that is, the sending end uses the calculated key to encrypt, and the receiving end uses the calculated key to encrypt. The decryption key ensures the security of ...

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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 [0001] The present invention relates to the technical field of communication, in particular to a parameter notification method, device and system. Background technique [0002] In the Long Term Evolution (LTE) system, the network centralized control method is adopted, that is, the uplink and downlink data of the user equipment (User Equipment, UE) are all sent and received under the control of the network, and between UE and UE There is no direct communication link, the communication between the two needs to be forwarded and controlled through the network, and the UE is not allowed to send uplink data by itself. Figure 1a shown. [0003] In the existing technology, simple device-to-device (D2D) communication refers to direct communication between terminals through Bluetooth, wireless fidelity (Wifl) and other technologies. This communication uses the license-free frequency band Resources are the user's own behavior and are not managed and controlled by netw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04W76/04
Inventor 刘爱娟汪颖焦斌
Owner DATANG MOBILE COMM EQUIP CO LTD
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