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Method for improving execution efficiency in process of switching UE (User Equipment) from NR (Noise Ratio) base station to LTE (Long Term Evolution) base station, switching method and UE

A technology for base station handover and execution efficiency, applied in the field of communications, can solve problems such as reducing system overhead, and achieve the effects of avoiding excessive system overhead, reducing delay, and reducing system overhead

Pending Publication Date: 2022-05-10
成都中科微信息技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for improving the execution efficiency of UE in the process of switching from NR base station to LTE base station, a switching method and UE, so as to solve the problem of repeated encoding and decoding of RRCConnectionReconfiguration in the process of UE switching from NR base station to LTE base station, thereby improving Time efficiency during UE handover from NR base station to LTE base station, reducing system overhead

Method used

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  • Method for improving execution efficiency in process of switching UE (User Equipment) from NR (Noise Ratio) base station to LTE (Long Term Evolution) base station, switching method and UE
  • Method for improving execution efficiency in process of switching UE (User Equipment) from NR (Noise Ratio) base station to LTE (Long Term Evolution) base station, switching method and UE
  • Method for improving execution efficiency in process of switching UE (User Equipment) from NR (Noise Ratio) base station to LTE (Long Term Evolution) base station, switching method and UE

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Embodiment 1

[0026] Such as figure 1 , figure 2 As shown, this embodiment proposes a method for improving the execution efficiency of the UE in the process of switching from the NR base station to the LTE base station. The method is as follows:

[0027] By redesigning the Target to Source Transparent Container information element in the HANDOVER REQUEST ACKNOWLEDGE message, the execution efficiency in the process of UE handover from NR base station to LTE base station is improved.

[0028] Furthermore, the method for redesigning the Target to Source Transparent Container information element in the HANDOVER REQUEST ACKNOWLEDGE message is as follows:

[0029] Such as image 3As shown, when the LTE base station prepares the Target to Source Transparent Container information element, it no longer uses the format of the HANDOVER COMMAND signaling for encoding, but directly ASN-encodes the DL-DCCH-Message message containing the RRCConnectionReconfiguration information element and puts it in t...

Embodiment 2

[0032] Based on the method for improving the execution efficiency of the UE in the process of switching from the NR base station to the LTE base station described in Embodiment 1, as figure 1 As shown, this embodiment proposes a UE handover method from an NR base station to an LTE base station, including the following steps:

[0033] S1. The NR base station initiates HANDOVER REQUIRED signaling to the 5GC, instructing the UE to switch from the NR base station to the LTE base station. The 5GC initiates a handover to the corresponding EPC. The EPC converts the HANDOVER REQUIRED signaling into a HANDOVER REQUEST and sends it to the LTE base station;

[0034] S2. After the LTE base station completes the processing, it returns the resynchronization information required by the UE to the EPC through the HANDOVER REQUEST ACKNOWLEDG message, and the EPC converts the HANDOVER REQUEST ACKNOWLEDG message into HANDOVER COMMAND signaling and returns it to the source NR base station; wherein,...

Embodiment 3

[0037] This embodiment proposes a UE, wherein the UE uses the handover method described in Embodiment 2 to perform handover from the NR base station to the LTE base station, and the specific steps are as follows:

[0038] S1. The NR base station initiates HANDOVER REQUIRED signaling to the 5GC, instructing the UE to switch from the NR base station to the LTE base station. The 5GC initiates a handover to the corresponding EPC. The EPC converts the HANDOVER REQUIRED signaling into a HANDOVER REQUEST and sends it to the LTE base station;

[0039] S2. After the LTE base station completes the processing, it returns the resynchronization information required by the UE to the EPC through the HANDOVER REQUEST ACKNOWLEDG message, and the EPC converts the HANDOVER REQUEST ACKNOWLEDG message into HANDOVER COMMAND signaling and returns it to the source NR base station; wherein, the HANDOVER REQUEST ACKNOWLEDG message carries the resynchronization information. The designed Target to Source ...

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Abstract

The invention provides a method for improving the execution efficiency in the process of switching UE from an NR base station to an LTE base station, a switching method and UE. In a Target to Source Transfer Container cell in a redesigned HANDOVER REQUEST ACKNOWLEDGE message, a code stream after HANDOVER COMMAND signaling coding is not carried any more, but a code stream after DL-DCCH-Message message coding is carried, so that the time delay in the UE switching process can be effectively reduced, the system overhead can be effectively reduced in a multi-UE simultaneous fallback scene, and the fallback failure caused by overlarge system overhead can be avoided.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, relates to a method for improving execution efficiency in the process of UE switching from an NR base station to an LTE base station, a switching method, and a UE. Background technique [0002] The 3GPP wireless system 38.413, 36.413, and 36.331 protocols define the signaling process for the UE to fall back from the NR base station to the LTE base station. First, the NR base station initiates the HANDOVER REQUIRED signaling to the 5GC (5G core network), indicating that the UE needs to switch from the NR base station to the LTE base station. The base station, 5GC initiates a handover to the corresponding EPC, and the EPC converts the HANDOVER REQUIRED signaling into a HANDOVER REQUEST and sends it to the LTE base station. After the LTE base station finishes processing, it returns the resynchronization information required by the UE to the EPC through the HANDOVER...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/08
CPCH04W36/0066H04W36/08
Inventor 龚翼刘依卿晓松卜智勇
Owner 成都中科微信息技术研究院有限公司