Acta Metallurgica Sinica(English letters) ›› 2013, Vol. 20 ›› Issue (3): 67-72.doi: 10.1016/S1005-8885(13)60051-5

• Networks • Previous Articles     Next Articles

SCTP Performance Improvement based on Virtual Receiver Window

  

  1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2012-11-03 Revised:2013-01-18 Online:2013-06-30 Published:2013-06-26
  • Contact: Feng-hua Wang E-mail:wangfenghua@bupt.edu.cn
  • Supported by:

    This work was supported by grants from China major projects of the wireless mobile communications network (2011ZX03005-005, 2010ZX03006-002-03, 2011ZX03005-004-02), the National Natural Science Foundation of China (61170275).

Abstract:

This article puts forward one algorithm for stream control transfer protocol (SCTP) improvement with limited receiver buffer (RBUF). As is well known, SCTP is one of the most important transfer control protocol, but most researches focus on the situations without the RBUF limit. In this study, we analyze the impact of the RBUF size on the performance. Computer simulations show that the network utility is low in reliable transfer, when the RBUF size is smaller than bandwidth delay product. By studying the transmission sequence number (TSN) transfer progress, we find that the peer receiver window (PEER_RWND), which lags behind the true receiver window (RWND), leads to the poor network utility. To improve SCTP performance with limited RBUF, the virtual receiver window (VIRTUAL_RWND) is introduced. Based on the VIRTUAL_RWND, one algorithm is proposed to increase the sending rate. Computer simulations have evaluated an excellent performance of the proposed algorithm at both ideal link without lost packet and nonideal link with lost packet.

Key words:

SCTP, limited receiver buffer, VIRTUAL_RWND