A Cross Layer Time Slot Reservation Protocol for Wireless Networks

The function of medium access control (MAC) protocol and the capacity of physical layer sufficiently affect the system performance in the wireless networks. In this research, we propose a MAC protocol based on direct sequence code division multiple access (DS-CDMA) for the wireless networks to guarantee quality-of-service (QoS) which depend on physical layer information, named the cross layer time slot reservation (CLTSR) protocol. A channel is divided into control and data channels to transmit control and data packets in the corresponding control and data frames, respectively. The data frame is further subdivided into several time slots; each time slot can transmit different traffic types such as constant bit rate (CBR), variable bit rate (VBR), and available bit rate (ABR). Each station maintains the available spreading code (ASC) table to understand which time slots and spreading codes have been reserved. CLTSR will allocate time slots and the spreading code for the data frame by using the fixed time slot allocation (FTSA) or the mixed time slot allocation (MTSA). The QoS can be guaranteed by providing the reservation of time slots and the spreading code. A Markov model is applied to analyze the CLTSR DS-CDMA system; the analytical and simulation results show that the proposed CLTSR performs has been improved.

[1]  Takaya Yamazato,et al.  Throughput analysis of DS/SSMA unslotted ALOHA system with fixed packet length , 1996, IEEE J. Sel. Areas Commun..

[2]  A. Girotra,et al.  Performance Analysis of the IEEE 802 . 11 Distributed Coordination Function , 2005 .

[3]  Kiseon Kim,et al.  Multimedia ad hoc wireless LANs with distributed channel allocation based on OFDM-CDMA , 2003, 10th International Conference on Telecommunications, 2003. ICT 2003..

[4]  Jing Deng,et al.  On optimizing the backoff interval for random access schemes , 2003, IEEE Trans. Commun..

[5]  Romano Fantacci,et al.  A MAC technique for CDMA based ad-hoc networks , 2005, IEEE Wireless Communications and Networking Conference, 2005.

[6]  Ling Liu,et al.  MC-CDMA based IEEE 802.11 wireless LAN , 2004, The IEEE Computer Society's 12th Annual International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems, 2004. (MASCOTS 2004). Proceedings..

[7]  James S. Lehnert,et al.  Packet throughput in slotted ALOHA DS/SSMA radio systems with random signature sequences , 1992, IEEE Trans. Commun..

[8]  Tadanori Mizuno,et al.  CDMA-based carrier sense multiple access protocol for wireless LAN , 2001, IEEE VTS 53rd Vehicular Technology Conference, Spring 2001. Proceedings (Cat. No.01CH37202).

[9]  Yuguang Fang,et al.  Design of MAC protocols with fast collision resolution for wireless local area networks , 2004, IEEE Transactions on Wireless Communications.

[10]  Voon Chin Phua,et al.  Wireless lan medium access control (mac) and physical layer (phy) specifications , 1999 .

[11]  Ansi Ieee,et al.  Part11 : Wireless LAN Media Access Control (MAC) and Physical Layer (PHY) Specifications , 1999 .

[12]  Dipankar Raychaudhuri,et al.  Performance Analysis of Random Access Packet-Switched Code Division Multiple Access Systems , 1981, IEEE Trans. Commun..

[13]  Marwan Krunz,et al.  CDMA-based MAC protocol for wireless ad hoc networks , 2003, MobiHoc '03.

[14]  Ian F. Akyildiz,et al.  A slotted CDMA protocol with BER scheduling for wireless multimedia networks , 1999, TNET.

[15]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[16]  T. S. Randhawa,et al.  Saturation throughput analysis of IEEE 802.11e enhanced distributed coordination function , 2004, IEEE Journal on Selected Areas in Communications.