Optimal Policies for Multi-Media Integration in CDMA Networks

In this paper we describe two policies for efficient use of the spectrum by multi-media users in direct-sequence code-division multiple-access (DS/CDMA) networks. The first policy pertains to CDMA networks with voice traffic and lower priority data traffic; voice and data have different bit error rate (BER) requirements. In this scheme, data traffic can only use the capacity of the CDMA system that is left unused by voice users and gets buffered whenever there are insufficient resources (CDMA codes). The second policy pertains to CDMA networks with voice traffic and two types of data traffic: high priority data traffic with the same priority as voice traffic that requires real-time delivery and lower priority data traffic that can tolerate delay and thus can be queued. In this scheme a movable boundary policy in the CDMA code domain is used for the voice and high priority data, whereas a small number of CDMA codes are reserved for the lower priority data which also utilizes any CDMA codes left unused by the other two traffic types.

[1]  Enrique Laborde,et al.  A Personal Communications Network Using a Ka-Band Satellite , 1992, IEEE J. Sel. Areas Commun..

[2]  Jean Conan.  The Weight Spectra of Some Short Low-Rate Convolutional Codes , 1984, IEEE Trans. Commun..

[3]  Michael B. Pursley,et al.  Error Probabilities for Spread-Spectrum Packet Radio with Convolutional Codes and Viterbi Decoding , 1985, MILCOM 1985 - IEEE Military Communications Conference.

[4]  Evaggelos Geraniotis,et al.  A multi-access scheme for voice/data integration in hybrid satellite/terrestrial packet radio networks , 1995, IEEE Trans. Commun..

[5]  D.C. Cox,et al.  Wireless network access for personal communications , 1992, IEEE Communications Magazine.

[6]  Paul T. Brady,et al.  A statistical analysis of on-off patterns in 16 conversations , 1968 .

[7]  Evaggelos Geraniotis,et al.  Multireception probabilities for FH/SSMA communications , 1992, IEEE Trans. Commun..

[8]  Tom McCusker,et al.  TRW Inc. , 1993 .

[9]  Henk Tijms,et al.  Stochastic modelling and analysis: a computational approach , 1986 .

[10]  Evaggelos Geraniotis,et al.  The probability of multiple correct packet receptions in direct-sequence spread-spectrum networks , 1994, IEEE J. Sel. Areas Commun..

[11]  Evaggelos Geraniotis,et al.  Performance Evaluation of Multi-Access Strategies for an Integrated Voice/Data CDMA Packet Radio Network , 1989 .

[12]  Roberto Padovani,et al.  Increased Capacity Using CDMA for Mobile Satellite Communication , 1990, IEEE J. Sel. Areas Commun..

[13]  Wen-Bin Yang,et al.  Admission policies for integrated voice and data traffic in CDMA packet radio networks , 1994, IEEE J. Sel. Areas Commun..