A tTransmission method and network device

Abstract

The embodiment of the invention provides a transmission method and a network equipment device thereof. The transmission method comprises the following steps of: transmitting data; thea control plane node receives a first message, wherein the first message comprises an uplink tunnel end point of a first interface, an uplink tunnel end point of a second interface and a downlink tunnel end point of athird interface; wherein the first interface is an interface between the user plane node and a second network node, the second interface is an interface between the user plane node and a third network node, and the third interface is an interface between the user plane node and a core network node; the control plane node sends a second message, wherein the second message comprises an uplink tunnel end point of the first interface; and the control plane node sends a third message, wherein the third message comprises an uplink tunnel end point of the second interface and a downlink tunnel end point of the third interface. According to the communication method provided by the embodiment of the invention, tThe allocation and indication of the uplink and downlink tunnel addresses of the user can be clearly determined under the condition that the interface network segments are inconsistent, so that the data transmission can be favorably completed.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to a transmission method and network equipment. Background technique [0002] In new access technologies such as 5G (New Radio, NR) technology, the base station can be composed of a centralized unit (Centralized Unit, CU) and a distributed unit (Distributed Unit, DU). The functions are split, and some functions of the base station are deployed in one CU, and the remaining functions are deployed in multiple DUs. Multiple DUs share one CU, which can save costs and facilitate network expansion. [0003] For some bearer data, the data offloaded by the user plane of the primary base station is directly sent to the DU of the secondary base station, and the destination address of the downlink data transmission is allocated by the DU of the secondary base station. Currently, the downlink address allocated by the DU of the secondary base station does not distinguish between inter...

AI Technical Summary

Problems solved by technology

[0003] For some bearer data, the data offloaded by the user plane of the primary base station is directly sent to the DU of the secondary base station, and the destination address of the downlink data transmission is allocated by the DU of the secondary base station. Currently, the downlink address allocated by the DU of the secondary base station does not distinguish between interfaces , if the network segment of the X2 interface (or Xn interface) between the primary base station and the DU of the secondary base station is different from the network segment of the F1 interface between the CU of the secondary base station and the DU of the secondary base station, then if the address allocated by the DU of the secondary base station is F1 network segment, then the main base station cannot use this address to transmit some bearer downlink data to the DU of the secondary base station

Images