公开(公告)号：EP2606672A1

公开(公告)日：2013-06-26

申请号：EP11751657.5

申请日：2011-07-22

申请人： NEC Corporation ,  NEC Europe Ltd.

发明人： ZHANG, Xiaowei ,  SHIGA, Shingo ,  PUNZ, Gottfried ,  SCHMID, Stefan ,  TAMURA, Toshiyuki ,  PRASAD, Anand Raghawa ,  CHIBA, Kazuhiro ,  OKABE, Junya

IPC分类号： H04W28/08

CPC分类号： H04W52/0203 ,  H04W8/12 ,  H04W28/08 ,  H04W36/22 ,  H04W52/0274 ,  Y02D70/1224 ,  Y02D70/124 ,  Y02D70/1262

摘要： In order to save energy in EPS network, some of the MMEs and/or S-GWs are allowed to sleep (power down), when network's traffic load is decreased. When the traffic load becomes heavier, the network can power up some of the formerly sleeping MMEs and/or S-GWs.

摘要翻译： 为了节省EPS网络的能量，当网络流量负载减少时，一些MME和/或S-GW被允许休眠（掉电）。 当流量负载变得更重时，网络可以启动一些以前睡眠的MME和/或S-GW。

公开(公告)号：EP4145881A1

公开(公告)日：2023-03-08

申请号：EP21796408.9

申请日：2021-04-26

申请人： NEC Corporation

发明人： TAMURA, Toshiyuki ,  OKABE, Junya ,  CHIBA, Kazuhiro ,  SHIMIZU, Kouji ,  NAKAGAWA, Tomoki ,  AOKI, Takahiro

IPC分类号： H04W16/32 ,  H04W72/04 ,  H04W4/029 ,  H04W4/30 ,  H04W76/15 ,  G07B15/00

摘要： A radio terminal (1) determines that the radio terminal (1) is approaching a first station (5), receives from a center server (4) a cell identifier of a first cell corresponding to an entrance gate function (53) of the first station (5), and transmit a message containing the cell identifier to a cellular communication network. The message causes the network to add the first cell (54) as a secondary cell in dual connectivity for the radio terminal (1), enabling the radio terminal (1) to communicate with the entrance gate function (53) via a user plane path including a radio connection of the first cell (54). The radio terminal (1) then communicates with the entrance gate function (53) via the user plane path. This contributes, for example, to reducing latency required to transmit or receive user data in a narrow coverage cell when a radio terminal receives a signal from that cell.