Shu (Marloon) Wang

Access Channel Enhancements for 1x Rel. F One Eighth Rate Access Probes for Smart Terminals Evolve Random Access Channels for IoT: I Introduction Evolve Random Access Channels for IoT: III Slotted ALOHA Models During the discussion of evolving access channels for machine-to-machine (M2M) communication liked services, two major requirements are defined. As stated by 3GPP2 system requirement document, one is "[a]n M2M service shall not impact any ... existing applications and services that are currently being supported". The other one is "[t]he scalability of M2M Device deployment shall be supported ...to allow flexible M2M Device and service deployment scenarios for large numbers of M2M Devices."  More details of these two requirements can be found in  3GPP2 Machine-to-Machine Communication System Requirements, S.R0146-0  and 3GPP M2M Service Requirements, ETSI TS 102-689 . Due to the nature of M2M traffic pattern and QoS requirement, recent studies find ou...

Access Channel Enhancements for 1x Rel. F One Eighth Rate Access Probes for Smart Terminals Evolving Random Access Channel for IoT: I Introduction Evolving Random Access Channel for IoT: IV Dumb Access Probes and Smart Access Probes It is well known that the access channel design of 3G cellular mobile network is based on ALOHA models . More specifically it is based on a single-channel single-hub slotted ALOHA plus open-loop power control.  Indeed, there are many possible variations of slotted ALOHA.  Considering access channel configuration, there are the cases with a single shared access channel and the cases with multiple access channels.  Considering network configuration, there are single hub models and multi-hub models. Though multi-channel slotted ALOHA models have been intensively studied in computer engineering domain, a ALOHA model with more than one participating hub and more than one access channel hasn't received enough attention so far. I gues...