Method and device for processing default connection of user equipment after intersystem switching

A user equipment, handover technology, applied in the field of communication, can solve the problem of no solution, such as subsequent bearer relationship, etc.

Active Publication Date: 2009-09-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although the existing solution solves the problem when there is no PDP Context, its deficiency is: for the existing PDP Context, and this PDP is a bearer that does not meet the default QoS (such as for real-time services (such as ses

Method used

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  • Method and device for processing default connection of user equipment after intersystem switching
  • Method and device for processing default connection of user equipment after intersystem switching
  • Method and device for processing default connection of user equipment after intersystem switching

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0087] Example one:

[0088] In this embodiment, the MME finds that the EPS (Evolved Packet System) bearer that currently needs to be deleted is the last (and only) bearer on the only PDN connection of the UE, and the bearer that needs to be deleted is not one. Non-GBR bearer; the MME initiates the Detach (deactivation) process to the UE, and deletes all the UE's bearers during the Detach process, and instructs the UE to initiate the Re-Attach (re-attach) process in the Detach type (deactivation type) .

[0089] image 3 In order to adopt the UE reattachment method to provide a default connection for the UE, step 305 to step 313 are the bearer deactivation process initiated by the PDN GW; step 301 to step 313 are the bearer resource release process initiated by the UE. In this embodiment, in the bearer deactivation process initiated by the PDN GW, the MME that implements step 311 determines whether to initiate the Detach process, then, as shown in the figure, the following steps m...

Example Embodiment

[0107] Embodiment two:

[0108] In this embodiment, it is explained that when the network finds that the currently deleted EPS bearer is the last bearer on the PDN connection, and the deleted bearer is a non-default QoS bearer, the network initiates a dedicated bearer modification process, and the bearer The implementation process of modifying the QoS of the QoS to Default QoS and indicating the bearer as the default bearer.

[0109] Figure 4 In order to adopt the method of bearer modification to provide a default connection for the UE, as shown in the figure, it may include the following steps:

[0110] Step 401: The UE initiates a bearer resource release request to the MME.

[0111] In this step, the UE initiates a request to release existing bearer resources. The request message carries parameters such as LBI, PTI, and TFT, where LBI is the EPS Bearer ID of this bearer.

[0112] Step 402: The MME forwards the bearer resource release request to the Serving GW.

[0113] In this...

Example Embodiment

[0118] Embodiment three:

[0119] This embodiment describes the TAU process of UE entering E-UTRAN from UTRAN / GERAN. In this process, if no bearer is marked as the default bearer, then one of the existing PDP Contexts is selected as the default bearer. Because the UE’s RAB ID / NSAPI (Radio Access Bearer Identifier / Network Service Access Point Identifier, radio access bearer identifier / network service access point identifier) ​​in the UTRAN / GERAN network corresponds to the EPS Bearer ID one-to-one, Therefore, after the RAB / NSAPI is mapped to the EPS Bearer ID, one of the bearers of each PDN connection is selected as the default bearer, and the LBI is indicated as the EPS Bearer ID of this bearer. If the UE has only one PDP Context, the LBI is indicated as the value of the EPSBearer ID after this PDP Context is mapped. This process is implemented in the process of bearer mapping after the MME obtains the PDP context of the UE from the SGSN. For example, after the following step 505 o...

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Abstract

The invention discloses a method and a device for processing the default connection of user equipment after intersystem switching. The method comprises the following steps that: the user equipment enters an E-UTRAN network from a GPRS network, wherein the user equipment has a packet data protocol context which is established between GPRS networks; the user equipment executes tracking area updating; and a mobility management entity establishes the default connection of the user equipment. Under conditions that the user equipment enters the E-UTRAN from the GPRS network and establishes a bearer and that the packet data protocol context is established between the user equipment and the network, the method solves the relation between a follow-up bearer and a default bearer of the user equipment which has the packet data protocol context when the packet data protocol context bearer is a non-default QoS bearer; meanwhile, in the process, the method avoids interrupting service in a service process of the user equipment, thereby ensuring service continuity.

Description

technical field [0001] The present invention relates to the communication field, in particular to a processing method and device for default connection of user equipment after switching between systems. Background technique [0002] In SAE (System Architecture Evolution, an evolved 3G system), it is hoped that users can always be online, so concepts of a default bearer and a dedicated bearer are introduced. When a user initially accesses an EPC (Evolved Packet Core, evolved packet core network) network, the network assigns an IP address to the user and establishes a default bearer. When there are other services initiated by the network or UE (User Equipment, user equipment), and when the capability of the default bearer cannot provide services for these services, a dedicated bearer is established for the UE. [0003] For traditional systems, when the UE accesses UTRAN (UMTS Terrestrial Radio Access Network, UMTS Terrestrial Radio Access Network; UMTS is Universal Mobile Tel...

Claims

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Application Information

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IPC IPC(8): H04W28/24H04W36/18H04W76/02H04W76/06
Inventor 姜怡华梁华瑞徐晖
Owner DATANG MOBILE COMM EQUIP CO LTD
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