摘要:
A mobile station (402) selects (1802) a preferred cell site for transmitting a frame of data to be sent subsequently to the mobile station. A base station (602) of the preferred cell site schedules (1804) a transmission of the frame of data, wherein parameters for the transmission are determined by the base station from recently-measured channel and interference information. Thereafter, the base station sends (1806) the frame of data from the preferred cell site; and an active set of base stations associated with the mobile station at ones of a plurality of cell sites synchronize (1808) their data queues to reflect the transmission of the frame of data.
摘要:
A mobile station (110) selects an initial data rate for communication between base station (107) and mobile station (110). Mobile station (110) communicates the selected initial data rate to base station (107) through uplink (112). Base station (107) determines a difference level of interference condition experienced by mobile station (107) between a time when the initial data rate was selected by mobile station (110) and a time when base station (107) prepares to communicate to mobile station (110). Base station (107) selects a final data rate for transmission from base station (107) to mobile station (110) based on the determined difference level of interference condition. As such, the initial data rate may be modified to the final data rate while maximizing the down link capacity.
摘要:
A method and apparatus for handoff to a rescue channel is introduced without the need to send and receive handoff control messages. In the preferred embodiment of the present invention, coordination of the rescue procedure at the infrastructure (450, 350, 351, 352) and mobile station (330) is provided first by disabling the mobile transmitter followed by subsequent detection of signal loss and frame erasures at the serving cells (311), then by enabling the mobile transmitter followed by subsequent detection of signal by a rescue cell (310, 312, 313, 314), and finally by enabling the rescue cell channel transmitter followed by subsequent detection and reception of signal and frames by the mobile station (330).
摘要:
A wireless communications device (100) includes a primary radio frequency branch (134) and a diversity branch (136), which is enabled and disabled to balance performance and power consumption. Diversity mode operation of the device is controlled, for example, based on one or more of an estimated channel quality indicator, data reception, data rate, state or mode of the station, estimated signal to noise ratio of a pilot signal, battery power level, distance from a serving cell, among other factors.
摘要:
A method for ACK/NACK determination reliability for a communication device includes a first step of defining (602) a supplementary indicator of message acceptability. A next step includes sending (604) data from a communication device to a BTS on an uplink channel. A next step includes checking (606) the data to see if it was properly received. A next step includes providing (608, 612) the supplementary indicator of message acceptability to the communication device in addition to ACK/NACK information. A next step includes utilizing (610, 614) the supplementary indicator of message acceptability to determine a reliability of the ACK/NACK information.
摘要:
A method and system (100) for dynamic rate switching (105) via medium access channel layer signaling is disclosed, wherein data rates for high data rate channels are automatically shifted up or down based on a predetermined metric. In a preferred embodiment, data rates are automatically shifted up or down based on transmit channel gain required to maintain a required signal to noise ratio.
摘要:
Forward link communication capacity of a communication system, which is providing from a base station to a number of mobile stations a number of forward communication links (123) corresponding to the plurality of mobile stations, is controlled by receiving gain setting (102) associated with at least one of the forward communication links, comparing the gain setting with a gain threshold (123), and adjusting a first encoding rate of at least one of the forward communication links to a second encoding rate based on the comparing. A gain offset (310) attunes the gain threshold (123) to update the gain threshold (123) according to a latest condition of the communication system. The gain offset (310) further is used to determine blocking of an incoming call to the communication system.
摘要:
A method for updating power control at a base transceiver station in a communication system (100) is provided. A base transceiver station (104) transmits a signal frame (201). A mobile station (102) receives the signal frame (203). The mobile station (102) determines whether the signal frame was accurately received (205) and sets a metric bit in a quality metric (207, 209). The metric bit indicates whether the signal frame was received correctly by the mobile station (102). The mobile station (102) transmits the quality metric (211), which is received by the base transceiver station (104). It is then determined whether to update power control, the determination based at least in part upon the quality metric.