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公开(公告)号：US09900836B2
公开(公告)日：2018-02-20
申请号：US15125265
申请日：2014-03-14
发明人： Rasmus Axén , Tobias Ahlström , Tobias Ljungström
摘要： A method in a radio network node for selecting a second SCell of a wireless device. The radio network node sends (201) data to a network node, upon a request to release the wireless device from a first connected state, in which the wireless device is connected to a first PCell and configured with a first SCell. The data indicates the first PCell and the first SCell. The radio network node retrieves (202) the sent data when the wireless device enters a second connected state. Then, the wireless device is connected to a second PCell. The radio network node compares (203) the second PCell with the first PCell and the first SCell. When the second PCell is the same as one of the first PCell and the first SCell, the radio network node selects (204) as the second SCell the other of the first SCell and the first PCell.
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公开(公告)号：US10182465B2
公开(公告)日：2019-01-15
申请号：US15126306
申请日：2014-06-03
发明人： Ibtissam El Khayat , Björn Knuthammar , Jie Ling , Tobias Ljungström , Peter Werner , Qi Xia , Tingyu Zhang
摘要： A control node (140; 150) of a cellular network establishes one or more control plane sessions with a gateway node (160). On the basis of these one or more control plane sessions with the gateway node (160), the control node (140; 150) also establishes one or more control plane sessions with one or more radio access network nodes (112, 114; 122, 24) to control multicast transmissions by the one or more radio access network nodes (112, 14; 122, 124). Further, the control node (140; 150) detects a connection failure to the gateway node (160). When detecting the connection failure, the control node (140; 150) starts a first timer. Further, also the gateway node (160) detects the connection failure. When detecting the connection failure, the gateway node (160) starts a second timer. The second timer is configured with a longer duration than the first timer. In response to expiry of the first timer, the control node (140; 150) locally deletes the one or more control plane sessions with the gateway node (160) and with the one or more control plane sessions with the one or more radio access network nodes (112, 114; 122, 124). In response to expiry of the second timer, the gateway node (160) triggers a reaction to the connection failure by the gateway node (160), e.g., selection of an alternative control node.
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3.发明申请公开(公告)号：US20170086247A1
公开(公告)日：2017-03-23
申请号：US15126306
申请日：2014-06-03
发明人： Ibtissam El Khayat , Björn Knuthammar , Jie Ling , Tobias Ljungström , Peter Werner , Qi Xia , Tingyu Zhang
摘要： A control node (140; 150) of a cellular network establishes one or more control plane sessions with a gateway node (160). On the basis of these one or more control plane sessions with the gateway node (160), the control node (140; 150) also establishes one or more control plane sessions with one or more radio access network nodes (112, 114; 122, 24) to control multicast transmissions by the one or more radio access network nodes (112, 14; 122, 124). Further, the control node (140; 150) detects a connection failure to the gateway node (160). When detecting the connection failure, the control node (140; 150) starts a first timer. Further, also the gateway node (160) detects the connection failure. When detecting the connection failure, the gateway node (160) starts a second timer. The second timer is configured with a longer duration than the first timer. In response to expiry of the first timer, the control node (140; 150) locally deletes the one or more control plane sessions with the gateway node (160) and with the one or more control plane sessions with the one or more radio access network nodes (112, 114; 122, 124). In response to expiry of the second timer, the gateway node (160) triggers a reaction to the connection failure by the gateway node (160), e.g., selection of an alternative control node.
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