ID |
原文 |
译文 |
46656 |
这些设备带有多种传感器,可以感知周围环境以及用户生物特征,同时可利用这些特征信息来持续认证持有智能终端的用户。 |
These devices with various sensors have the ability to perceive the circumstance and user’s biometric features, which can be used to continuously authenticate a user’s identity. |
46657 |
然而,受限于卫星移动通信的低传输率以及身份认证过程中对于数据持续传输的需求,目前还没有在卫星移动通信系统中利用这些特征对用户进行持续身份认证的研究工作。 |
However, these features have not been studied to identify a specific user immobile satellite communication system yet, due to its low data transfer rate and unacceptable delay. |
46658 |
为解决该问题,在卫星移动通信系统中,提出一个结合可穿戴设备与智能终端的持续认证方案(CASTWED),并对方案的安全性进行了理论分析。 |
To solve this problem,continuous authentication combing smart terminal with wearable devices (CASTWED) was studied in mobile satellite communication system, the security of CASTWED was also theoretically analyzed. |
46659 |
实验数据表明,CASTWED方案可以在支持 10 万用户并发访问的同时,仅需占用 Ku 波段 60 Mbit/s 的传输带宽。 |
Simulation experiments show that theCASTWED scheme can provide simultaneous online authentication service for 100 000 users via 60 Mbit/s Ku waveband. |
46660 |
多接口多信道 MAC 协议存在接口利用率不高等问题。 |
Low utilization of the interface always exists in multi-interface multi-channel (MIMC) medium access proto-col. |
46661 |
为此,提出 MIC-MAC 协议在多接口节点模型中增加虚拟 MAC 层,利用单接口的成功握手信息建立源—目标节点之间所有接口同步传输的关系,提高了吞吐量和控制帧效率。 |
Therefore, the multi-interface cooperating (MIC) mechanism was proposed. A virtual MAC layer was designed in multi-interface node and multi-interface cooperative mechanism through one successful handshake of single interface to establish the synchronous transmission relationship between source-destination nodes all interface and data channel groups, thus improving the throughput and efficiency of control frame. |
46662 |
另外,成功传输的节点选取当前信道作为下次传输的决策信道可以有效改善隐藏终端问题。 |
Furthermore, nodes with successful transmission choose the current channel set as decision-making channels of the next transmission,which can effectively reduce the impact of hidden terminal. |
46663 |
实验结果表明在单跳网络中,与 MIMC-SMAC、IEEE 802.11 协议相比,吞吐量分别提高了 100%~200%;在多跳网络中有效改善了碰撞和隐藏终端问题。 |
The simulation results of MIC-MAC protocol show that the throughput has increased by 100% to200% compared with MIMC-SMAC protocol and IEEE 802.11 in single hop network, the collision and hidden terminal problem have also been greatly optimized in multi hop network. |
46664 |
首先量化了在快照查询服务和连续查询服务中攻击者可能通过关联关系建立的关联概率攻击方法。 |
The attack of correlation probability used by the adversary in snapshot query and continuous query services were measured. |
46665 |
然后,针对这些攻击方法提出了与之对应的基于广义差分隐私的隐私保护模型。基于建立的隐私保护模型设计了基于位置偏移产生关联概率不可区分的隐私保护方法,并证明了这种方法的隐私保护效力。 |
Then, on account of these attacks, a privacy protection framework based on the differential privacy and a location-shift scheme to achieve the indistinguishable of correlation probabilities was provided, and the protection effectiveness of this method was proved. |