Intelligent MBWIMA/UMTS Protocol Using SDMA Scheduling in UTRA TDD Mode
Wireless Personal Communications: An International Journal
Optimal timeslot and channel allocation considering fairness for multicell CDMA/TDD systems
Computers and Operations Research
Capacity planning for group-mobility users in OFDMA wireless networks
EURASIP Journal on Wireless Communications and Networking
Performance of a two-level call admission control scheme for DS-CDMA wireless networks
EURASIP Journal on Wireless Communications and Networking
An efficient local predictive method for distributed timeslot allocation in CDMA/TDD
IEEE Transactions on Wireless Communications
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This paper analyses the behavior of two hybrid time-code division multiple-access (T/CDMA) architectures on the up-link of a macrocellular mobile radio system. For the examined schemes two categories of users-voice and data-share the domain of available resources, made up of time slots and codewords, through two alternative assignment strategies. Both solutions attribute voice users one single resource pair, i.e., one time slot and a single code to employ on that time slot, but differ in the way data users requests are accommodated: they are either simultaneously granted several codes over the same time slot or are assigned a single code over several distinct time slots. Call admission control is performed by a channel assignment algorithm which dynamically attributes resources only if specified levels of transmission quality are met on the radio channels. The blocking and the outage probability of the two classes of users are determined and compared, showing that one of the proposed schemes exhibits better performance and allows to satisfyingly serve a significant percentage of data users