標題: How to Reduce Unexpected eMBMS Session Disconnection: Design and Performance Analysis
作者: Chan, Tsung-Yen
Ren, Yi
Tseng, Yu-Chee
Chen, Jyh-Cheng
交大名義發表
資訊工程學系
National Chiao Tung University
Department of Computer Science
關鍵字: LTE broadcast;multimedia broadcast and multicast service (MBMS);performance analysis;quality of experience (QoE)
公開日期: 1-Feb-2018
摘要: In 3GPP evolved multimedia broadcast/multicast service (eMBMS), sometimes sessions will be disconnected unexpectedly due to the miss of session keys. Although rekeying can prevent old users from getting multicast data, it also causes authorized users to miss subsequent data if they miss the key update messages. Thus, re-authentication is needed to obtain lost keys from key management mechanism. We point out this problem in our previous work. In this letter, we further propose a new KeySet algorithm, which can pre-issue a number of keys to users when they join eMBMS. The advantage is that a user can still decode multicast data even if it misses some key updates tentatively. However, the cost is that allowing some old users to freely enjoying multicast. In this letter, we quantify the tradeoff and derive the optimal case.
URI: http://dx.doi.org/10.1109/LWC.2017.2759113
http://hdl.handle.net/11536/144557
ISSN: 2162-2337
DOI: 10.1109/LWC.2017.2759113
期刊: IEEE WIRELESS COMMUNICATIONS LETTERS
Volume: 7
起始頁: 126
結束頁: 129
Appears in Collections:Articles