Data transmission equipment, data transmission method and communication system

Abstract

The invention discloses data transmission equipment, a data transmission method and a communication system in order to solve the problems of high cost on existing wireless network operation and maintenance and poor service quality of wireless broadband services. The data transmission equipment is located at an IP (internet protocol) metropoliatan area network node or the position of an optical line terminal of a wireless access network, and comprises a first service bypass processing module and / or a second service bypass processing module. The first service bypass processing module is used for receiving uplink packet service data sent by a UE (user equipment), determining that the uplink packet service data need to be distributed according to a preset service distribution strategy and directly distributing the uplink packet service data to a PDN (public data network) through a local preset Gi interface. The second service bypass processing module is used for receiving downlink packet service data sent by the PDN to the UE from the Gi interface and sending the downlink packet service data to the UE. The equipment, the method and the system can be applied to 3G (third-generation) or LTE (long term evolution) wireless communication systems and the like.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission device and method and a communication system. Background technique [0002] In the existing wireless communication system packet domain (Packet Switch, PS) network, the node with the function of service bypass (including service distribution and injection) is located in the core network, and the user communicates with the public data through the node with the function of service bypass. Network (Public Data Network, PDN) for communication. [0003] For example: if figure 1 As shown, in the Universal Mobile Telecommunications System (UMTS) / High Speed ​​Packet Access (HSPA) network, the gateway GPRS support node (Gateway GPRS Support Node, GGSN) of the core network is a service The node with the bypass function, when performing uplink data transmission, the packet service data sent by the user is connected to the wireless access network through the wireless a...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the node with the service bypass function is located in the core network. Compared with the user, the distribution point / injection point of the service is too high, and the packet service data transmitted between the user and different service subsystems in the PDN needs to go through many High-level transmission network and multiple network elements for transmission, the transmission distance is long, the cost is high, and the delay is large, which is not conducive to the development of services that require high service quality such as broadband video services

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