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User face data inverse-transmitting method for realizing the switching across base station

A technology for user plane data and cross-base stations, applied in digital transmission systems, data exchange networks, transmission systems, etc., can solve the problems of long data processing paths, increased handover processing delays, and increased handover delays to reduce processing time latency, shortened latency, reduced protocol processing, and the effects of data replication between layers

Active Publication Date: 2010-06-23
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0011] The problem with this processing is that the data needs to be processed by fallback and reverse analysis when it is reversed, which makes the data processing path too long and greatly increases the delay in switching.
Therefore, repeated protocol processing and inter-layer data replication greatly increases the latency of the handover process

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  • User face data inverse-transmitting method for realizing the switching across base station
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  • User face data inverse-transmitting method for realizing the switching across base station

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Embodiment Construction

[0030] In the present invention, the user plane receives data, stores the PDU of the message at the upper layer, and notifies the lower layer to perform protocol processing on the message; after the message is successfully sent, the upper layer deletes the PDU of the corresponding message according to the trigger of the lower layer; The upper layer of the side base station sends the stored PDU of the message that needs to be transmitted back to the target side base station.

[0031] figure 1 It is the flow chart of back-transmission of user plane data across base stations in the present invention, such as figure 1 As shown, the implementation process of user plane data backtransmission for cross-base station handover includes the following steps:

[0032] Step 101: When the user plane receives data, establish a mapping relationship among the packets of the GTPU layer, PDCP layer, and RLC layer layer by layer. Base stations produced by different manufacturers have different s...

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Abstract

The present invention discloses a user face data inverse-transmitting method for realizing the switching across a base station, which comprises the following steps: data is received by a user face; message protocol dada units PDUs are stored at a high layer, and a lower layer is noticed to process massage protocol; after the massages are successfully transmitted, the PDUs of corresponding massages are deleted by the high layer according to the touching of the lower layer; when is switched, the high layer of a source side base station sends the PDUs of stored massages which need to be transmitted inversely to an target base station. Thus, when data needs to be transmitted inversely, by the linkage of the high layer and the lower layer, the data is directly sent out by the high layer to the target base station, so a data processing path is greatly shortened, and further, the processing time delay in the switching across a base station is extendedly reduced. On the premise that the existing protocol is followed, switched data is moved to the GTPU layer of TNL by inverse-transmitting operation. Thus, not only the lossless transmission of the switched data is realized, but also the inverse-transmitting time delay of the data can be effectively reduced, the repeated data processing and interlayer data copying are largely reduced, and the inverse-transmitting time delay of the user face data is effectively shortened.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a user plane data reverse transmission method for realizing cross-base station switching. Background technique [0002] The Long Term Evolution (LTE, Long Term Evolution) packet data system (EPS, Evolved Packet System) includes an enhanced access network (E-UTRAN, Evolved UTRAN) and an evolved packet core network (EPC, Evolved Packet Core). EPS realizes the transformation of the wireless communication system from the traditional hierarchical structure to the flat structure, which greatly simplifies the signaling process and system complexity. [0003] Data transmission of user equipment (UE, User Equipment) during handover is a key technical issue. In order to achieve lossless data transmission and save wireless resources on the air interface, the data that has not been sent by the source base station needs to be forwarded to the target base station for processing dur...

Claims

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Application Information

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IPC IPC(8): H04W36/10H04W80/06H04L12/56
CPCH04W36/02
Inventor 王波汤德龙侯小安
Owner ZTE CORP
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