{'fraction_non_alphanumeric': 0.023939064200217627, 'fraction_numerical': 0.001088139281828074, 'mean_word_length': 5.174496644295302, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Performance Analysis of SIP as Signaling in Next Generation Network

Session Initiation Protocol (SIP) has been widely used for Signaling for VoIP networks now. In the coming 3 Generation Mobile Network and even Next Generation Network, SIP plays an important role in setting up calls. SIP’s performance is analyzed with two models in this paper, a coarse-granularity transaction-based model and a fine-granularity model considering congestion avoidance problem. The former model is general, and the later is based on the condition that TCP is the transport protocol to carry SIP. With the transaction-based model we can compare the difference of SIP’s behavior over different physical links. With the fine-granularity model, the more concrete delay considering congestion avoidance problem can be got. A mechanism to ameliorate SIP’s performance over connection-oriented transport protocol is analyzed with the models.