Method and equipment for transmitting data

Abstract

The invention discloses a method and equipment for transmitting data. The method includes that relay nodes RN acquire transmission layer care-of addresses distributed by a target donor evolved node B DeNB for the relay nodes RN; the relay nodes RN inform serving gateways S-GW corresponding to user equipment UE of the transmission layer care-of addresses, and the serving gateways S-GW transmit the data which are required to be transmitted to the relay nodes RN to the target donor evolved node B DeNB by the aid of the transmission layer care-of addresses. The method and the equipment in an embodiment of the invention have the advantages that the relay nodes RN inform the serving gateways S-GW corresponding to the user equipment UE of the transmission layer care-of addresses which are distributed to the relay nodes RN by the target donor evolved node B DeNB, so that the serving gateways S-GW corresponding to the user equipment UE can directly transmit the data to the target donor evolved node B DeNB, the data can be prevented from being transmitted through P-GW (data packet networks gateway) (RN) / S-GW (RN) in data transmission procedures, the UE data packet transmission delay can be shortened, transmission load on a network can be reduced, return link resources between the P-GW (RN) / S-GW (RN) and the target donor evolved node B DeNB can be saved, and the user experience can be improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and equipment. Background technique [0002] Such as figure 1 As shown, it is a schematic diagram of EPS (Evolved Packet System, evolved packet system), and EPS bearer is established between UE (User Equipment, user equipment) and P-GW (Packet Data Networks Gateway, packet data gateway), using To transmit user plane data between the UE and the P-GW; the data packet sent by the UE is mapped to the corresponding EPS bearer, transmitted to the P-GW through the EPS bearer, and enters the external network in the form of an IP packet, and is routed to the communication peer; The data packet sent by the communication peer reaches the P-GW through the external network, and the P-GW maps the data packet to the corresponding EPS bearer, and sends it to the UE through the EPS bearer. [0003] It should be noted that the complete EPS bearer include...

AI Technical Summary

Problems solved by technology

[0010] RN can select a closer P-GW (RN) / S-GW (RN) for RN according to the geographical location of the selected DeNB at startup; as RN moves, its serving DeNB leaves the initial location due to RN handover. The selected P-GW (RN) / S-GW (RN) may be farther and farther away; at this time, the transmission delay of the data packet between the P-GW (RN) / S-GW (RN) and the serving DeNB of the RN will increase It is getting bigger and bigger, resulting in lower user experience; and the transmission of large amounts of data over long distances will also consume the backhaul link resources between P-GW (RN) / S-GW (RN) and DeNB

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