Method and device for transferring information

Abstract

The embodiment of the invention provides a method and a device for transferring information, and the method comprises the following steps: receiving a first connection request sent from terminal equipment by a wireless network; acquiring an access point name (APN) by the wireless network according to the first connection request; and sending indicative information to the terminal equipment by the wireless network, wherein the indicative information is used for indicating the terminal equipment to judge whether the APN sends more than two PDN connection requests to the wireless network according to the indicative information. In the embodiment of the invention, the wireless network sends the indicative information to the terminal equipment to enable the terminal equipment to judge whether the APN sends more than two PDN connection requests to the wireless network according to the indicative information so as to avoid unnecessary signaling interaction between the wireless network and the terminal equipment.

Description

technical field [0001] The present invention relates to the communication field, in particular to an information transmission method and device. Background technique [0002] The wireless network selects the packet data network that the terminal device wants to access through the access point name APN. In order to realize the service of the terminal device on the packet data network, a bearer needs to be established for service transmission. PDN connection, in different situations, the number of PDN connections supported by a wireless network for an APN will be different. For example, corresponding to an APN, if the packet data network assigns an IP address to the terminal device, then the wireless network supports establishing a PDN connection for an APN, and if the packet data network assigns more than two IP addresses to the terminal device, then the wireless network An APN supports the establishment of more than two PDN connections; and for example, the wireless network...

AI Technical Summary

Problems solved by technology

[0003] Therefore, for the case where the wireless network only supports the establishment of one PDN connection for one APN, if the terminal device sends more than two PDN connection requests to the wireless network for the APN, the wireless network will reject the PDN connection request, resulting in inappropriate Necessary signaling interaction

[0004] When a terminal device moves from a source wireless network (3GPP network, such as E-UTRAN / UTRAN / GERAN) that can establish more than two PDN connections for one APN to a target wireless network that supports only one PDN connection for one APN (non- 3GPP network, such as Wimax, WLAN, HRPD, etc.), the source wireless network cannot delete the PDN connection that is not established in the target wireless network, resulting in redundant resources in the source wireless network that cannot be released

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