Sökning: "VoIP capacity"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden VoIP capacity.

  1. 1. Control traffic overhead for VoIP over LTE

    Master-uppsats, KTH/Kommunikationssystem, CoS

    Författare :Syed Ghazanfar Salari; [2012]
    Nyckelord :LTE; VoIP capacity; Physical Downlink Control Channel PDCCH ; Control Channel Elements CCE ; indoor hotspot; scheduling concepts; openWNS simulator; performance evaluation;

    Sammanfattning : With increasing technological advancements more sophisticated mobile devices are being used by end-users. Third generation (3G) mobile communication systems such as Universal Mobile Telecommunication System (UMTS) are not able to satisfy the rising demand for higher throughputs and low latencies. LÄS MER

  3. 2. Hardware Acceleration of the Robust Header Compression (RoHC) Algorithm

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Mohammed Al-Obaidi; Harshavardhan Kittur; [2012]
    Nyckelord :Technology and Engineering;

    Sammanfattning : With the proliferation of Long Term Evolution (LTE) networks, many cellular carriers are embracing the emerging eld of mobile Voice over Internet Protocol (VoIP). The robust header compression (RoHC) framework was introduced as a part of the LTE Layer 2 stack to compress the large headers of the VoIP packets before transmitted over LTE IP-based architectures. LÄS MER

  4. 3. Green VoIP : A SIP Based Approach

    Master-uppsats, KTH/Kommunikationssystem, CoS

    Författare :Goce Talaganov; [2012]
    Nyckelord :SME; home; VoIP; SIP; energy efficiency; low-power; IP telephony system; WRT54GL; DD-WRT; cloud services;

    Sammanfattning : This master thesis presents, examines, designs, implements, and evaluates with respect to energy efficiency a secure and robust VoIP system. This system utilizes a Session Initiation Protocol (SIP) infrastructure assisted by a cloud service, specifically focusing on small to medium sized enterprises (SME) and homes. LÄS MER

  5. 4. Analysis of Queues for Interactive Voice and Video Response Systems : Two Party Video Calls

    Master-uppsats, KTH/Kommunikationssystem, CoS

    Författare :Venkatesh Chengegowda; [2012]
    Nyckelord :IVVR; Queue; media transcoding; SIP; Asterisk; DiaStar; IIVVR; kö; media omkodning; SIP; Asterisk; DiaStar;

    Sammanfattning : Video conversation on mobile devices is popularizing with the advent of 3G. The enhanced network capacity thus available enables transmission of video data over the internet. It has been forecasted by several VOIP service organizations that the present IVR systems will evolve into Voice and Video Response (IVVR) Systems. LÄS MER

  7. 5. Fast Packet Retransmissions in LTE

    Master-uppsats, Kommunikationssystem

    Författare :Syed Tamoor-ul-Hassan; Serkan Demir; [2011]
    Nyckelord :Link Adaptation; HARQ; EHF; FTP; VOIP;

    Sammanfattning : The cellular networks are evolving to meet the future requirements of data rate,coverage and capacity. The fourth generation mobile communication system, LTEhas been developed to meet these goals. LTE uses multiple antenna features andlarger bandwidths in order to accomplish this task. LÄS MER