摘要:
In a method of detecting a mobile station that is not following a power control command, for each time slot, a received signal-to-interference ratio (SIR) value of the mobile as measured by a given base station is compared with a given average SIR target value. An error metric may be generated for each slot based on a difference between the measured SIR and average SIR target values. The generated error metrics may be averaged over a given time duration to determine at least one (or more) average error value(s), and the mobile station is determined as violating a power control command if the at least one or more average error value(s) exceed a given threshold.
摘要:
ntion is directed to the management of data burst requests. In iethod of the invention operates to determine a measure of one or parameters, which in an advantageous embodiment are the input z amount of data available in the input data buffer at the beginning t. The invention then proceeds to the selection of an operating data burst as a function of the input data parameter measures. In an nbodiment, the operating data rate is determined by computing the red data rate as a function of the input data rate and the data content fer at the beginning of the data burst, with the operating data rate lowest supported system data rate that is equal to or greater than the ed data rate. In a further step, the invention proceeds to a selection r the data burst from the burst durations supported by the wireless ction of the selected operating data rate and an end-of-burst data er. Advantageously, the system duration is selected that that, when selected operating data rate, provides a minimum end-of-burst data
摘要:
A communication system selection algorithm (SSA) implemented by a mobile station chooses between available systems to select a system to serve the mobile station. During initialization, the SSA causes the mobile station to scan the environment and compare available communication systems to determine the best system to provide service. After an initial system is chosen, the SSA causes the mobile station to continuously, or at discrete time intervals, scan the environment for available systems, thus allowing for a seamless switch to an available system whenever a handoff is desired. The SSA chooses the best available system based on conditions such as bit rate and cost of each available system and applying preference rules defined by a service provider and/or user of the mobile station.
摘要:
A reverse link load control strategy utilizes a total call load metric in place of a reverse signal strength indicator metric for managing reverse link resources. In a disclosed example, a load control module (40) measures the reverse signal strength indicator (62) and measures an active cell load (64) using known techniques. A relationship between the reverse signal strength indicator, the active cell load, an other cell load component and a jammer component provides the ability to determine the other cell load component and the jammer component. Once the other cell load component has been determined, a total call load based upon the active cell load component and the other cell load component provides a useful metric for allocating reverse link resources between existing users and for determining whether to allow a new user, for example.
摘要:
A wireless communication network (20) includes a power management module (50) for controlling the power of transmission between a base station (38) and a mobile station (40). Bearer traffic (e.g., voice or data signals) are transmitted using a first transmission power limit. Handoff messages are transmitted using a second, higher transmission power limit. In one example, the power management module (50) selects an increment to the first transmission power limit for purposes of transmitting handoff signals.
摘要:
A wireless communication network (20) utilizes a hard handoff procedure for switching between cells serving a mobile station (40). In a disclosed example, the existing link between the mobile station (40) and a serving base station (38) is not released until a new link between a target base station (32) and a mobile station (40) is established. At the same time, however, the mobile station maintains only one base station or link within its active set at all times. The disclosed example is useful for dedicated channel and shared channel communications in CDMA systems, for example.
摘要:
The method for handover at user equipment includes decoding an information block from at least one of one or more target base stations before receiving a handover command indicating to handover to a first target base station and connecting to the first target base station using the decoded information block.
摘要:
There is provided a system and method and apparatus for selecting data rates in a wireless communication system. More specifically, there is provided a method comprising selecting one of a plurality of data rate control values for a transmission based on an adjustable relationship between the selected data rate control value and a transmission error margin related to the selected data rate control value.
摘要:
In the method, a phase of at least one signal transmitted from a transmit antenna of a base station is shifted based on a sweeping frequency having a differentiating component.
摘要:
A method of adjusting a power level of communications over a channel in a wireless communications network. In the method, a determination (e.g., by a radio network controller (RNC)) is made regarding a number of base stations actively communicating with a mobile station. For example, the determination may indicate whether the mobile station is engaged in soft handoff or simplex mode. One of a plurality of power control algorithms (e.g., a fixed offset power control algorithm, a channel quality indicator (CQI) power control algorithm, etc.) is selected based on the determination. A power level of communications over the channel (e.g., a downlink communications channel to the mobile station) is then adjusted in accordance with the selected power control algorithm.