An Admission Control Protocol for Real-Time OSGi

2010 ◽  
Author(s):  
Thomas Richardson ◽  
Andy Wellings
Keyword(s):  
Real Time ◽  
Admission Control ◽  
Control Protocol

Enhanced Adaptive Call Admission Control Scheme With Bandwidth Reservation for LTE Networks

2021 ◽  
Vol 12 (1) ◽  
pp. 23-42
Author(s):  
Maniru Malami Umar ◽  
Amimu Mohammed ◽  
Abubakar Roko ◽  
Ahmed Yusuf Tambuwal ◽  
Abdulhakeem Abdulazeez
Keyword(s):  
Real Time ◽  
Admission Control ◽  
Call Admission Control ◽  
Blocking Probability ◽  
Degradation Mechanism ◽  
Radio Resource Management ◽  
System Level ◽  
Bandwidth Reservation ◽  
Lte Networks ◽  
Call Admission

Call admission control (CAC) is one of the radio resource management techniques that regulates and provide resources for new or ongoing calls in the network. The existing CAC schemes wastes bandwidth due to its failure to check before degrading admitted real-time calls and it also increases the call dropping probability (CBP) and calling blocking probability (CBP) of real-time calls due to the delay incurred when bandwidth is degraded from them. This paper proposed an enhanced adaptive call admission control (EA-CAC) scheme with bandwidth reservation. The scheme employs a prior-check mechanism that ensured bandwidth to be degraded will be enough to admit the new call request. It further incorporates an adaptive degradation mechanism that degrades non-real time calls before degrading the RT calls. The performance of the EA-CAC scheme was evaluated against two existing schemes using Vienna LTE system level simulator. The EA-CAC scheme exhibits better performance compared to the two schemes in terms of throughput, CBP, and CDP of RT calls without sacrificing the performance of NRT calls.

New Internet Protocals for Multimedia Transmission

2008 ◽  
pp. 1634-1642
Author(s):  
Michael Welzl
Keyword(s):  
Real Time ◽  
Multimedia Data ◽  
The Internet ◽  
Transmission Protocol ◽  
Multimedia Transmission ◽  
Stream Control Transmission Protocol ◽  
Control Protocol ◽  
Stream Control ◽  
Multimedia Data Transmission ◽  
Typically Real

This chapter will introduce three new IETF transport layer protocols in support of multimedia data transmission and discuss their usage. First, the stream control transmission protocol (SCTP) will be described; this protocol was originally designed for telephony signaling across the Internet, but it is in fact broadly applicable. Second, UDP-Lite (an even simpler UDP) will be explained; this is an example of a small protocol change that opened a large can of worms. The chapter concludes with an overview of the datagram congestion control protocol (DCCP), a newly devised IETF protocol for the transmission of unreliable (typically real-time multimedia) data streams.

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