The Research on Wireless System Traffic Model and Call Blocking Performance Improvement Strategy; Performance Analysis for the Integrated Voice/ Data Packet CDMA Networks 无线网络业务量模型及呼损性能改善策略研究分组码分多址系统话音/数据业务性能分析
CAC schemes have been widely investigated during the last two decades, which greatly improves the network performances, such as call blocking and dropping probabilities, packet delay, loss rate, and throughput. 20多年来,CAC策略得到了广泛地研究,极大地改善了网络呼损率、中断率、分组延时、丢包率和吞吐率等性能。
It includes handoff control, call admission control, power control, packet schedule, load control, and mobility management so on. 该技术包括切换控制部分、呼叫接纳部分、功率控制部分、分组调度部分、和负荷控制部门以及移动性管理等。
Call Admission Control of High Speed Downlink Packet Access in WCDMA WCDMA系统中高速下行分组接入的接纳控制策略
With the solution of this model, we have obtained the voice call blocking probability and the mean packet waiting length. 利用模型的解,求得了网络中的重要性能话音呼叫的拒绝概率和数据业务的平均排队长度。
These schemes are compared in these aspects of the voice call blocking probability, the average queue length of data packet, the data packet dropping probability and the total channel rate. 对这两种方案从语音业务阻塞率、数据包平均队列长度、数据业务掉包率和系统吞吐量等方面进行了比较分析。
During the TX process, program in user space using protocol in kernel to send the data packet into DMA mapped structure; and then call the TX function to send the packet. 数据发送时,应用程序通过内核协议栈将数据包放入DMA映射缓冲区,然后调用驱动程序操作网卡芯片发送数据包。
The model ensure the safety of the public key by XKMS; call Bouncy Castle Crypto API password packet through the Java Cryptography Extension, which provides for a variety of encryption algorithms required; ensure data transmission security through XML signature and XML encryption technology. 该模型通过XKMS保证系统公钥的安全;通过Java加密扩展调用BouncyCastleCryptoAPI密码包来提供加密所需的各种算法;通过XML签名和加密等技术保证数据传输的安全。
The main contributions of this thesis are as follows: 1) Build the CLM ( Cross Layer Markov) Model to describe the relationship between the call level and packet level. 主要工作和贡献如下:1)建立了呼叫层和分组层相互关系的跨层马尔可夫(CLM,CrossLayerMarkov)模型。