Abstract: Methods to and devices capable of transmitting data in a centralized network are disclosed. A central coordinator receives data from a source device to be relayed to at least one destination device. The central coordinator acknowledges reception of the data from the source device and transmits data to at least one destination device. The central coordinator then waits for an acknowledgement of data reception from each destination device to which the data was sent.

Abstract: A method of transmitting data is disclosed. The method transmits data from a source device over a contention channel in a centralized network to more than one device on the channel, including a central coordinator. The method then waits for a data acknowledgment signal from the central coordinator as an indicator of successful reception of the data by any device to which the data was transmitted.

Abstract: A method of determining a transmission process is disclosed. One embodiment comprises a method of notifying a central coordinator of a group to receive a transmission and obtaining system parameters from the central coordinator. The method then determine at least one merit parameter using at least one of the system parameters and at least one local parameter and selects a method of transmission based upon the merit parameter.

Abstract: With the addition of high-speed data traffic to traditional CDMA cellular networks, there is a need to efficiently utilize system capacity so that the quality of service of existing voice and low-speed data users is maintained while new high-speed data users are added to the network. Methods and systems are presented that control allocation of power to users, quality of service requirements, and/or user activity levels to enhance capacity utilization. These methods and systems are based on a method for estimating the capacity of a CDMA carrier with both voice and data users using an interference-based analysis of the reverse link. In particular, the methods enhance capacity utilization in a multi-code CDMA network architecture, in which several codes are allocated to a single high-speed data user for parallel transmission.