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A method and device for deleting a pdn connection

A deletion method and device technology, applied in the field of communication, can solve problems affecting user experience and PDN connections cannot coexist, and achieve the effect of improving user experience

Active Publication Date: 2015-11-25
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] If the UE configured as NASsignalinglowpriority initiates the PDN connection establishment process of the emergency service, the network side device needs to delete all the PDN connections of the non-emergency service, and the PDN connection of the normalaccesspriority established by the UE will also be deleted at this time; the emergency service of the UE The PDN connection and the normalaccesspriority PDN connection cannot coexist, which affects the user experience

Method used

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  • A method and device for deleting a pdn connection
  • A method and device for deleting a pdn connection
  • A method and device for deleting a pdn connection

Examples

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Embodiment 1

[0028] Embodiment 1 of the present invention provides a method for deleting a PDN connection, so as to reasonably delete the PDN connection of the UE, and the UE may be specifically: a UE configured as NAS signaling low priority (non-access stratum signaling low priority); figure 1 As shown, the method includes the following steps:

[0029] Step 101, when signaling congestion occurs in the current network, the network side device obtains the priority information of the PDN connection in the BearerContext (bearer context) of the UE.

[0030] In the embodiment of the present invention, the priority information of the PDN connection is determined by whether there is an indication of low access priority (low access priority) for the PDN connection; that is, when the PDN connection has an indication of low access priority, the PDN connection is a PDN connection of low access priority; when the PDN connection When there is no indication of lowaccesspriority, the PDN connection is an...

Embodiment 2

[0047] Embodiment 2 of the present invention provides a method for deleting a PDN connection. When the current network is in an overloaded state, such as figure 2 As shown, the method includes the following steps:

[0048] In step 201, the SGSN / MME receives a session management request message from the UE, and the session management request message is for requesting establishment of a PDN connection for emergency services; or, the session management request message is for requesting establishment of a PDN connection for normalaccesspriority.

[0049] In step 202, the SGSN / MME checks the BearerContext of the UE.

[0050] In step 203, the SGSN / MME judges whether there is a PDN connection of low access priority in the BearerContext of the UE; if yes, execute step 204; if not, execute step 205.

[0051] In step 204, the SGSN / MME deletes the PDN connection of low access priority existing in the BearerContext by initiating a PDN disconnection process.

[0052] Step 205, end the p...

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Abstract

Disclosed are a PDN connection deleting method and device. The method comprises: when a current network generates signalling congestion, a network-side device obtaining priority information about a PDN connection in a bearer context of UE, the priority information about the PDN connection being determined by an indication as to whether the PDN connection has a low access priority; and the network-side device deleting the PDN connection existing in the bearer context according to the priority information about the PDN connection. When the degree of network congestion is lower, the embodiments of the present invention can ensure that a PDN connection of which the priority is higher than the low access priority and a PDN connection of an emergency service can coexist, thereby ensuring that UE can simultaneously obtain a normal priority service and an emergency service as far as possible, and improving the user usage experience.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and equipment for deleting a PDN connection. Background technique [0002] 1. UE (UserEquipment, user equipment) configured (configuration) forNAS (NonAccessStratum, non-access stratum) signaling (signaling) lowpriority (low priority). [0003] The existing protocol proposes that for a UE configured as NASsignalinglowpriority, once a PDN (PacketDataNetwork, packet data network) connection for emergency (emergency) services is established, all other PDN connections for non-emergency services need to be deleted. [0004] Second, EmergencyAttach (emergency attachment). [0005] In order to enable the UE to obtain emergency services in a restricted cell (restricted cell refers to a cell where the UE cannot normally attach to the network), the current protocol stipulates that the UE can initiate an emergencyattach in the restricted cell, and once the UE initiat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/06H04W28/08
CPCH04W72/1247H04W72/566
Inventor 王胡成
Owner DATANG MOBILE COMM EQUIP CO LTD
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