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Base station for transmission of message between base stations and communication method performed by base station

專利號
US11889366B2
公開日期
2024-01-30
申請人
NTT DOCOMO, INC.（JP Tokyo）
發(fā)明人
Hideaki Takahashi; Tianyang Min; Masato Taniguchi
IPC分類
H04W36/00; H04W76/38
技術(shù)領(lǐng)域
station,apparatus,in,tti,base,may,nr,node,be,or
地域： Tokyo

摘要

A network node includes: a control unit configured to configure an information element in a field included in a message between network nodes in a case where the field is mandatory in the message between the network nodes, the message being used for performing communication configuration related to a user apparatus; and a transmission unit configured to transmit the message between the network nodes including the field in which the information element is configured, wherein the field is mandatory in the message between the network nodes in a case where a predetermined condition is satisfied.

說明書

TECHNICAL FIELD

The present invention relates to a network node in a wireless communication system.

BACKGROUND ART

Regarding NR (New Radio) (also referred to as “5G”), or a successor system to LTE (Long Term Evolution), technologies have been discussed which satisfy the following requirements: a high capacity system, high data transmission rate, low delay, simultaneous connection of multiple terminals, low cost, power saving, etc. (for example, Non-Patent Document 1).

In the NR system, similar to the dual connectivity in the LTE system, a technique called LTE-NR dual connectivity, NR-NR dual connectivity, or Multi-RAT (Multi Radio Access Technology) dual connectivity (hereinafter referred to as “MR-DC”) is introduced, in which data is divided between a base station (eNB) of an LTE system and a base station (gNB) of an NR system, and the divided data sets are simultaneously transmitted or received by these base stations (for example, Non-Patent Document 2).

PRIOR ART DOCUMENT Non-Patent Document

    • [Non-Patent Document 1] 3GPP TS 38.300 V15.4.0 (2018 December)
    • [Non-Patent Document 2] 3GPP TS 37.340 V15.4.0 (2018 December)

SUMMARY OF THE INVENTION Problem to be Solved by the Invention

權(quán)利要求

1
The invention claimed is:1. A base station comprising:a processor configured to include a specific field as a mandatory field in a message between base stations; anda transmitter configured to transmit the message between the base stations to another base station,wherein the specific field as the mandatory field between the base stations is regardless of a configuration of a field corresponding to the specific field in a message between a terminal and the base station, andwherein the field corresponding to the specific field in the message between the terminal and the base station is included in the message between the terminal and the base station in a case of a setup.2. The base station according to claim 1, wherein the message between the base stations is HandoverPreparationlnformation, and the specific field is discardTimer.3. A communication method of a base station, comprising:including a specific field as a mandatory field in a message between base stations; andtransmitting the message between the base stations to another base stationwherein the specific field as the mandatory field between the base stations is regardless of a configuration of a field corresponding to the specific field in a message between a terminal and the base station, andwherein the field corresponding to the specific field in the message between the terminal and the base station is included in the message between the terminal and the base station in a case of a setup.
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