公开(公告)号：US20170208503A1

公开(公告)日：2017-07-20

申请号：US15324035

申请日：2015-05-27

Applicant: NEC Corporation

Inventor： Masakazu ONO ,  Shigeru ASAI ,  Kenji WAKAFUJI ,  Hideto SHIBOHTA ,  Shingo WATANABE ,  Masato KUDOU

IPC: H04W28/14 ,  H04L29/08 ,  H04W28/06

CPC classification number: H04W28/14 ,  H04L67/02 ,  H04L67/34 ,  H04W28/06 ,  H04W28/10 ,  H04W84/18

Abstract: A node in a DTN includes: a memory; and a processor coupled to the memory and configured to execute data transfer processing for the DTN, wherein the data transfer processing including: receiving a plurality of bundles to be transferred to a same destination node on the DTN, each of the plurality of bundles including any one of a plurality of data segments acquired by dividing data of a content; deleting a part of the bundles from among the plurality of bundles without transferring to any other node or compressing a data size of a payload of the part of the bundles in accordance with a communication status of the DTN; and transmitting either a rest of the bundles excluding the deleted part of the bundles or the plurality of bundles including the part of the bundles having the compressed payloads to the DTN for transmitting to the destination node.

公开(公告)号：US20190116523A1

公开(公告)日：2019-04-18

申请号：US16217160

申请日：2018-12-12

Applicant: NEC Corporation

Inventor： Masakazu ONO ,  Shigeru ASAI ,  Kenji WAKAFUJI ,  Hideto SHIBOHTA ,  Shingo WATANABE ,  Masato KUDOU

IPC: H04W28/14 ,  H04W28/06 ,  H04L29/08 ,  H04W28/10 ,  H04W84/18

Abstract: A node in a DTN includes: a memory; and a processor coupled to the memory and configured to execute data transfer processing for the DTN, wherein the data transfer processing including: receiving a plurality of bundles to be transferred to a same destination node on the DTN, each of the plurality of bundles including any one of a plurality of data segments acquired by dividing data of a content; deleting a part of the bundles from among the plurality of bundles without transferring to any other node or compressing a data size of a payload of the part of the bundles in accordance with a communication status of the DTN; and transmitting either a rest of the bundles excluding the deleted part of the bundles or the plurality of bundles including the part of the bundles having the compressed payloads to the DTN for transmitting to the destination node.

公开(公告)号：US20170163372A1

公开(公告)日：2017-06-08

申请号：US15327077

申请日：2015-05-27

Applicant: NEC Corporation

Inventor： Hideto SHIBOHTA ,  Shigeru ASAI ,  Kenji WAKAFUJI ,  Masakazu ONO ,  Shingo WATANABE ,  Masato KUDOU

IPC: H04K3/00

CPC classification number: H04K3/44 ,  H04K3/00 ,  H04K3/41 ,  H04K3/42 ,  H04K2203/34

Abstract: A radio wave jamming system (1) comprises a plurality of radio transmitters (10) that are adapted to transmit respective jamming signals (11) including substantially the same frequency. The plurality of radio transmitters (10) are further adapted to temporally change at least one of the transmission phases of the jamming signals (11), which are to be transmitted from the plurality of radio transmitters (10), so as to temporally change the phase differences among the jamming signals (11) when the jamming signals (11) transmitted from the plurality of radio transmitters (10) arrive at a particular site (50). Thus, for example, a radio wave jamming system that can be constituted by small-output radio devices can be provided.