The invention discloses a relay transmission method based on GTP protocol, which uses a signaling relay mode to separate the GTP - C surface signaling data from the GTP - U face service data. Relay transmission system of the present invention also discloses the method based on GTP protocol, including SGSN service support node, gateway support node and relay node GGSN support RGSN, support the relay node RGSN is connected between SGSN and GGSN, with signaling analysis and forwarding unit, relay unit management. The invention of GTP C signaling data through the relay node to support RGSN transfer between SGSN and GGSN, and GTP U business data directly in the SGSN (or RNC) between GGSN and transmission, without support relay node RGSN, then GTP - C and GTP - U signaling data plane surface separation and transmission of business data. To effectively solve the bottleneck problem of network, improve the transmission quality of service.
【技术实现步骤摘要】
【技术保护点】
1.一种基于GTP协议的中继传输方法,其特征在于包括以下步骤:a)通过DNS解析结果,服务支持节点SGSN向中继支持节点RGSN发起PDP上下文创建请求;b)RGSN收到所述PDP上下文创建请求信令,按照透明中继逻辑以及GTP-U隧道端点的建立要求,修改所述创建请求信令中的协议字段参数值而生成新的PDP上下文创建请求信令;然后查找中继目的网关支持节点GGSN,向所述中继目的网关支持节点GGSN转发新的PDP上下文创建请求信令;c)中继目的GGSN发出PDP上下文创建接受响应信令,经RGSN按照透明中继逻辑和信令中继要求向SGSN转发;d)SGSN接收到RGSN发来的PDP上下文创建接受响应信令,保存隧道建立相关信息,根据信令参数将GGSN作为GTP-U隧道端点;e)SGSN和GGSN根据信令交互信息,之间直接建立GTP-U隧道,进行业务数据转送;在直接隧道方式下,RNC与GGSN之间直接建立GTP-U隧道;f)业务数据传送完毕,进行PDP上下文删除处理。
【技术特征摘要】
【专利技术属性】
技术研发人员:魏江,
申请(专利权)人:广州科讯技术有限公司,
类型:发明
国别省市:81[中国|广州]
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