摘要:
Methods and systems for adjusting the access search window based on the movement of a mobile station (MS) are disclosed. The MS searches for pilot signals using a search window that has an initial size. At a first and second time, the MS determines its position. The MS then determines the distance between the position of the MS at the first time and the second time. When the distance is less than a threshold distance, the MS measures the strength of a pilot signal within the access search window and identifies one or more signal peaks within the access search window that are above a specified signal strength. Next, the MS modifies the access search window into one or more smaller access search windows. The one or more smaller access search windows collectively have a size that is smaller than the initial size.
摘要:
Methods and systems are provided for increasing and decreasing a power level of a forward-link overhead channel. In an embodiment, a BTS (i) receives from at least one mobile station an increase request, each increase request requesting that the BTS increase a power level of a forward-link overhead channel, (ii) makes a first determination that at least a first threshold number of mobile stations have sent an increase request within a first request window, wherein the first request window is a period of time, and (iii) in response to making the first determination, increases the power level of the forward-link overhead channel.
摘要:
Methods and systems are provided for using packet-transport metrics for call-admission control. In an embodiment, a base station provides packet-data service to mobile stations, which comprises (a) providing wireless service over an air interface in a wireless coverage area and (b) providing transport service over a packet-data network. The base station measures, over at least the packet-data network, each packet-transport metric in a set of one or more packet-transport metrics. The base station conducts call-admission control in the wireless coverage area based at least in part on the one or more measured packet-transport metrics.
摘要:
A radio access network (RAN) allocates a resource, such as a forward traffic channel, to a mobile station that is engaged in a call. During the call, the RAN monitors a reverse link signal that is received from the mobile station. If the RAN detects a reception failure, such as the receipt of an errored frame in the reverse link signal, the RAN determines the power level that the mobile station used to transmit the reverse link signal when the reception failure occurred. If the mobile station was already transmitting at its maximum power level, the RAN may immediately release the resource. Otherwise, the RAN defines a test period that is sufficient for the mobile station to increase its transmit power to the maximum level. If the reception failure continues throughout the test period, the RAN may then release the resource.
摘要:
Methods and systems are provided for using packet-transport metrics for setting DRCLocks. In an embodiment, an access node provides packet-data service to access terminals, which comprises (a) providing wireless service over an air interface in a wireless coverage area and (b) providing transport service over a packet-data network. The access node measures, over at least the packet-data network, each packet-transport metric in a set of one or more packet-transport metrics. The access node sets a DRCLock for at least one of the access terminals based at least in part on the one or more measured packet-transport metrics.
摘要:
Methods and systems are provided for achieving quality of service (QoS) by using the reverse activity bit (RAB) in creation of neighbor lists for selected access terminals. In an embodiment, an access node provides service to a plurality of access terminals in a first wireless coverage area. The access node maintains and broadcasts a standard neighbor list identifying neighboring wireless coverage areas, each having a respective RAB. The access node generates a QoS neighbor list, consisting of one or more coverage areas from the standard neighbor list having a RAB that is cleared. The access node transmits the QoS neighbor list to a subset of the access terminals. Each access terminal in the subset uses the QoS neighbor list in place of the standard neighbor list, while the other access terminals use the standard neighbor list.
摘要:
Disclosed herein are methods and systems for dynamically adjusting power allocated for overhead communications in a sector of a radio access network (RAN). An exemplary method involves (a) detecting a switch to RC4 for resource allocation in a given sector; (b) in response to detecting the switch to RC4: (i) determining the location of each access terminal located in the sector; and (ii) based at least in part on the locations of the access terminals, determining mobility of access terminals in the sector; (c) making a determination as to whether or not the mobility is below a threshold level; and (d) if the determined mobility is below the threshold level, then: (i) based at least in part on the determined locations of the access terminals, determining an amount by which to reduce the power allocated for overhead communications in the sector; and (ii) reducing the power by the determined amount.
摘要:
A method and system for reducing an amount of traffic on a paging channel of a wireless communications system by holding a pending page message until a subsequent re-registration request and response cycle scheduled to occur within a threshold amount of time. A radio access network (RAN) may be configured to determine whether an amount of time to a next scheduled re-registration request and response cycle is less than a threshold amount. If the amount of time is less than the threshold amount, the RAN may delay transmission of the pending page message until the next re-registration request and response cycle. By sending the pending page message in a response to a scheduled re-registration request, or by sending the pending page as the response to a received re-registration request, the amount of traffic on the paging channel of the wireless communications system may be reduced.
摘要:
Methods and systems are provided for using femtocells to address macro-network backhaul congestion. In an embodiment, a macro base transceiver station (BTS) that has a backhaul connection to a radio network controller (RNC) detects that a current utilization of the backhaul exceeds a backhaul-congestion threshold, and responsively identifies one or more sector-carriers having a respective current air-interface utilization that is less than a respective sector-carrier-congestion threshold for the respective sector-carrier. The macro BTS further identifies one or more femtocells that are positioned in the coverage area of the one or more identified sector-carriers, and offloads some reverse-link traffic to each identified femtocell over the forward link of an identified sector-carrier in whose coverage area the respective identified femtocell is positioned, for forwarding of the offloaded traffic by the one or more identified femtocells over a packet-data network to an intended destination.
摘要:
A method and system are provided for planning a service-provider network. The service-provider network includes a macro network and a number of low-cost internet base stations (LCIBs), where the macro network includes a number of macro base transceiver stations (BTSs). One or more LCIBs are selected. The selected LCIBs are instructed to operate in an unrestricted mode and then operate in the unrestricted mode for an evaluation period. After the evaluation period ends, an off-loaded-traffic amount is determined for at least a portion of the macro network for the evaluation period. The off-loaded-traffic amount is then associated with the one or more selected LCIBs. Then, the service-provider network is planned based on the off-loaded-traffic amount.