Abstract:
A method and system to help manage latency in setup of fallback communications, such as circuit switched fallback calls for instance, by taking into account the load on various fallback carriers. When a first network is serving a device and engages in a process to facilitate setup of a communication for the device to be served by a second, fallback network, the first network will work with the second network to determine which local carriers of the second network are least loaded, and the first network will then direct the WCD to scan those determined least-loaded carriers in particular. This process may thus help to avoid having the WCD spend time scanning local carriers of the second network that the second network is unlikely to assign in any event due to loading.
Abstract:
A method and system for vertical handoff of a mobile station from a first-protocol RAN to a second-protocol RAN. The method and system provide a make-before-break vertical handoff, by having the first-protocol RAN (i) acquire, on behalf of the mobile station, a traffic channel assignment defining one or more traffic channel parameters for air interface communication in the second-protocol RAN, and (ii) pass to the mobile station, via the first air interface protocol, the one or more traffic channel parameters so that the mobile station can then readily switch over to communication under the second-protocol RAN. Optimally, the acquisition and passing of the one or more second-protocol traffic channel parameters may occur without the mobile station having requested the handoff, without the mobile station having asked for the traffic channel assignment, and without the mobile station having yet begun communication with the second-protocol RAN.
Abstract:
Disclosed is a method and corresponding apparatus for enhanced scheduling of resources based on use of carrier aggregation. The method involves determining that (i) an individual UE is being served with carrier aggregation or with greater than a threshold amount of frequency and (ii) a processor load of the base station is greater than a threshold load. The method then involves, responsive to the determining that the individual UE is being served with carrier aggregation or with greater than a threshold amount of frequency and that the processor load of the base station is greater than the threshold load, causing the base station to allocate an extent of resources to the individual UE without using FSS.
Abstract:
Disclosed herein are methods and systems that may help to adjust, e.g., CDMA paging and access parameters in a coverage area, based on the prevalence of devices that are configured for enhanced circuit switch fallback (eCSFB) in the coverage area. For example, a base station in a radio access network (RAN) may: (a) determine a measure CSFB-device prevalence in a coverage area, (b) use the measure of CSFB-device prevalence in the coverage area as a basis for adjusting one or more parameters for communications with via a first channel (e.g., a CDMA paging or access channel), and (c) apply the one or more adjusted parameters to communications with devices via the first channel.
Abstract:
Disclosed herein are methods and systems that may help to adjust, e.g., CDMA paging and access parameters in a coverage area, based on the prevalence of devices that are configured for enhanced circuit switch fallback (eCSFB) in the coverage area. For example, a base station in a radio access network (RAN) may: determine a measure of circuit switch fallback (CSFB) device prevalence in a coverage area, use the measure of CSFB-device prevalence in the coverage area as a basis for updating one or more paging parameters for communications via a paging channel defined under the first air-interface protocol; and apply the one or more updated paging parameters to communications with devices via the paging channel defined under the first air-interface protocol.
Abstract:
A RAN may receive a call request to establish a call involving a WCD. The RAN may serve WCDs of a first type and WCDs of a second type. WCDs of the first type may communicate with the RAN using a first air-interface or a second air-interface, and WCDs of the second type may communicate using the second air-interface. If the WCD is of the first type, the RAN may select wireless coverage areas from a first candidate set of wireless coverage areas. If the WCD is of the second type, the RAN may select wireless coverage areas from a second candidate set of wireless coverage areas. The RAN may assign, to the WCD, traffic channels from each wireless coverage area selected for supporting the call. The selected wireless coverage areas may be defined by the RAN and may operate in accordance with the second air-interface.
Abstract:
Exemplary methods and systems are disclosed herein that may, among other benefits, help a mobile station to conserve power by intelligently determining how often to scan for incoming pages. An exemplary method may be carried out by a mobile station that has most-recently registered with a radio access network in a zone of last registration, and involves the mobile station (a) determining a location of the mobile station in relation to the zone of last registration, (b) using the location of the mobile station in relation to the zone of last registration as a basis for determining a scan period to wait between scans of the paging channel; and (c) periodically scanning the paging channel according to the determined scan period. Furthermore, an exemplary method may be carried out in order to conserve battery power when a mobile station determines that its battery power is low.
Abstract:
Disclosed herein are systems and methods for allocating fully-orthogonal and quasi-orthogonal spreading codes to access terminals in radio access networks based on a tolerance level for additional interference on a per-access-terminal basis. An embodiment takes the form of a method that includes receiving a request for allocation of a spreading code to an access terminal, and responsively comparing an additional-capacity number to an available-codes number. The additional-capacity number represents, based on an average contribution per access terminal to the current reverse noise, how many additional fully-orthogonal spreading codes could be allocated to access terminals without exceeding a maximum-allowed reverse noise. The available-codes number represents how many fully-orthogonal spreading codes are currently available for allocation. The method further involves allocating a fully-orthogonal spreading code to the access terminal when the additional-capacity number is greater than or equal to the available-codes number, and otherwise allocating a quasi-orthogonal spreading code.
Abstract:
Methods and systems are disclosed that can help to select an enhancement mode for uplink coordinated multipoint (CoMP). An exemplary method involves: determining a measure of remaining battery power of a first user equipment (UE), wherein the first UE is capable of uplink coordinated multipoint (CoMP) communication; determining a particular UE type of the first UE, wherein the particular UE type is one of a plurality of possible UE types; based at least in part on (a) the particular UE type of the first UE, and (b) the measure of remaining battery power of the first UE, selecting either a battery-saving mode or a throughput-enhancement mode as an uplink CoMP enhancement mode for the first UE; and providing uplink CoMP service to the first UE according to the selected uplink CoMP enhancement mode.
Abstract:
A method and system to control UE handover is disclosed herein. A source base station serving a UE receives from the UE a measurement report that specifies a signal strength of a neighboring target base station. The source base station sets a value of a handover threshold parameter, with the set value being based at least in part on whether the target base station is a relay base station or a non-relay base station. Further, the source base station may compare the specified signal strength of the target base station to the set value of the handover threshold parameter and determine that a handover condition is satisfied. Responsive to making such a determination, the source base station may invoke handover of the UE from the source base station to the target base station.