Abstract:
A fixed base-site (115) periodically pages subscribers (120) in a paging area (100). To prolong the battery life of the subscribers (120), paging groups (520) are not sent to subscribers (120) as often when the paging load is small. Since the subscribers (120) support discontinuous receive, processing of the pages will not take place as frequently and thus a battery savings is realized. When the fixed base-site (115) receives more pages than can be supported without exceeding a predetermined delay, the fixed base-site (115) dynamically increases the frequency that paging groups (520) are transmitted to subscribers (120). When the paging load decreases, the fixed base-site (115) dynamically decreases the frequency that paging groups (520) are transmitted to subscribers (120) and again a savings in battery life is realized.
Abstract:
A fixed base-site (115) periodically pages subscribers (120) in a paging area (100). To prolong the battery life of the subscribers (120), paging groups (520) are not sent to subscribers (120) as often when the paging load is small. Since the subscribers (120) support discontinuous receive, processing of the pages will not take place as frequently and thus a battery savings is realized. When the fixed base-site (115) receives more pages than can be supported without exceeding a predetermined delay, the fixed base-site (115) dynamically increases the frequency that paging groups (520) are transmitted to subscribers (120). When the paging load decreases, the fixed base-site (115) dynamically decreases the frequency that paging groups (520) are transmitted to subscribers (120) and again a savings in battery life is realized.
Abstract:
A method and apparatus for utilizing voice channel transceivers (1004) as temporary scanning receivers in a handoff event for a cellular radiotelephone system. Voice channel transceiver identifications are stored in link lists (1702) according to priority, sectorization, and last use. When a signal strength measurement is required, those cell sectors having available voice channel transceivers (1004) are identified and a table providing optimum transceiver selection is utilized to select those voice channel transceivers (1004) which will make the signal strength measurement.
Abstract:
A mobile unit 40 which is in a soft handoff condition 50 with a base station (32) has the power transmitted by the base station (32) on the mobile link (52) controlled. The base station (32) determines (70) when a frame erasure count reaches a particular level N. The base station then places this link in a clamped state (72) at minimum power. When the base station determines that M consecutive good frames have been received (92), the base station restores the link (52) to a normal state (94). A recovery arrangement (100, 110 and 120) prevents clamping by all base stations (32-34) and loss of the link.
Abstract:
A power control method (50) is applicable either to a base station 20 or a mobile station (1-N). This method takes into account the previous two power control bits (52-54). The method then determines a correction factor by multiplying the power control step size by the sum of the previous two power control bits (56). A corrected received signal is produced (58) and compared to a threshold signal (62). Based on this comparison, power control is set up (64) for data frames below the signal threshold or power is set down (66) for data frames equal to or above the signal threshold.
Abstract:
A method and corresponding entity for providing phone book forwarding list in a communication system (100) is described. The method comprises of receiving at a first mobile device (106) a notification message from a second mobile device (108). The notification message includes an identity of the second mobile device (108). The method includes registering the identity of the second mobile device (108) in a phone book forwarding list (222) of the first mobile device (106). The method further comprises sending the phone book forwarding list (222) when the first mobile device (106) receives a paging signal. The phone book forwarding list (222) is further utilized for forwarding the call to the second mobile device (108) when a communication session is not established with the first mobile device (106).
Abstract:
In a mobile communication system, an adaptive power control method may include determining by a network unit (209) of the mobile communication system a message type (252) of a control message (250) transmitted to a mobile unit (202), determining message content (254) of the control message, determining whether the control message is being retransmitted (256) and selectively increasing power gain for the control message based on at least one of the message type, the message content and whether the control message is being retransmitted.
Abstract:
A method of selective need-based control message augmentation may include a network unit of a mobile communication system (100) generating a control message (250) for communication to a mobile unit (202), determining a handoff state transition of the mobile unit, and determining a set of signal conditions for one or more legs of an active set associated with the mobile unit. Further, the network unit at least one of selectively fast repeating the control message and selectively increasing the power gain for the control message based on the handoff state transition and the set of signal conditions.
Abstract:
A method for adaptive power control in a mobile communication system (100) determines (120) whether an RF loading factor (110) is greater than a threshold value. If the RF loading factor is above the threshold value, the method reduces call quality (140). Next, a determination is made whether the RF loading factor is below a second threshold value (150). If the RF loading factor is below the second threshold value, the call quality of the mobile communication system is increased (160).
Abstract:
A method for substantially reducing the frame erasure rate (FER) to approximately 1 percent dynamically changes the power down to power up ratio from 100 to 1 to 200 to 1 to minimize subsequent frame erasures. During call startup periods the method (60) loosely monitors the power. Whereas for consecutive error bursts of frame erasures, the process (80) does not change the power threshold. This power threshold is the level received signals are compared against to determine if a power up or a power down step needs to be performed. Likewise, RF fades will not cause the power threshold to be increased. Further, should the power threshold exceed its maximum, it is reset by process (90).