Abstract:
A radio access network (RAN) may receive indications from a wireless communication device (WCD). The RAN may support wireless communication via a plurality of non-overlapping frequency bands, and the plurality of non-overlapping frequency bands may include a low-frequency band and a high-frequency band. The low-frequency band and the high-frequency band may be separated by at least 5 megahertz. The indications may indicate signal strengths at which the WCD received signals from one or more frequencies in the low-frequency band and one or more frequencies the high-frequency band. The RAN may also receive a communication request from the WCD. Based at least in part on receiving the communication request, the RAN may select a frequency from the one or more frequencies in the low-frequency band and the one or more frequencies in the high-frequency band, and may instruct the WCD to communicate using the selected frequency.
Abstract:
A method, system, and apparatus for managing release of air interface traffic channels are described. When a radio access network (RAN) is deciding whether to release traffic channels assigned to one or more of a plurality of mobile stations, the RAN may prioritize the release of the assigned air interface traffic channels based on reported air interface conditions. For instance, when the RAN is deciding whether to release a traffic channel from a first mobile station or a second mobile station, the RAN may determine to release the assigned traffic channel from the first mobile station if the first mobile station is experiencing worse air interface conditions.
Abstract:
A method and system for allocating frequency bandwidth between a relay backhaul link and a donor access link, based at least in part on the PLMN(s) to which UE(s) served by the relay node subscribe. The donor base station or another controlling entity may determine the PLMN(s) to which one or more UEs currently served by the relay node subscribe and, based at least in part on the determined PLMN(s), may assign a PLMN-priority level to the relay. Based at least in part on the PLMN-priority level assigned to the relay, the controlling entity may then establish an allocation of the frequency bandwidth between the relay backhaul link and the donor access link, and the donor base station may apply that established allocation.
Abstract:
A method and system for circuit-switched fallback (CSFB) is disclosed. A first wireless network may receive from a wireless communication device (WCD) a report including an indication of radio frequency (RF) quality of a second wireless network. The first wireless network may make a determination of whether the reported indication of RF quality exceeds a threshold. If the determination is that the reported indication of RF quality exceeds the threshold, the first wireless network may send the reported indication of RF quality to the second wireless network. However, if the determination is that the reported indication of RF quality does not exceed the threshold, the first wireless network may direct the WCD to hand off to the second wireless network and refrain from sending the reported indication of RF quality to the second wireless network.
Abstract:
A method and apparatus to help mitigate interference from an adjacent coverage area. A user equipment device (UE) determines a time division duplex (TDD) frame arrangement of a neighboring base station and reports the determined TDD frame arrangement to a serving base station. The serving base station uses the reported TDD frame arrangement of the neighboring base station as a basis to avoid scheduling downlink transmission of bearer traffic to the UE at times when the TDD frame arrangement of the neighboring base station defines uplink transmission.
Abstract:
Embodiments may be implemented to take codec quality into account when helping to manage the active set of a wireless communication device (WCD). An illustrative method may involves a radio access network (RAN) component determining a comparative signal-strength measure for a candidate sector as compared to at least one active sector in the active set of a WCD, determining a comparative codec-quality measure for the candidate sector as compared to the at least one active sector in the active set of a WCD, and based at least in part on both (a) the comparative signal-strength measure and (b) the comparative codec-quality measure, making a determination as to whether or not to add the candidate sector to the active set.
Abstract:
A wireless communication device (WCD) may transmit a first sequence of access probe messages to a radio access network (RAN) via a first wireless coverage area. The WCD may then transmit a second sequence of access probe messages to the RAN via a second wireless coverage area. Based on the first wireless coverage area being more preferable to the WCD than the second wireless coverage area, the WCD may use a negative inter-sequence power step for the power levels at which the WCD transmits the access probe messages of the first and second sequences. Thus, the WCD may transmit the first access probe message of the second sequence at a lower power than the first access probe message of the first sequence.
Abstract:
Methods and systems are disclosed that may help to adjust the paging process for a wireless communication device (WCD) according to the codec that was last assigned to the WCD. An exemplary method may involve a radio access network (RAN): (a) determining that a wireless communication device (WCD) should be paged in a coverage area of the RAN; (b) determining a codec that was last assigned to the WCD in the coverage area; (c) using the last-assigned codec as a basis for adjusting a paging process that is used to page the WCD; and (d) paging the WCD according to the adjusted paging process.
Abstract:
A RAN may receive a call establishment request, on a first frequency, seeking to establish a call involving a WCD. In response to receiving the request, the RAN may select a plurality of wireless coverage areas, each defined using the first frequency. The RAN may determine that utilization of a first wireless coverage area of the selected wireless coverage areas meets a utilization threshold. In response, the RAN may determine that a strength at which the WCD receives signals from the first wireless coverage area exceeds the strengths at which the WCD receives signals from other wireless coverage areas in the plurality of wireless coverage areas by at least a signal strength differential value. Accordingly, the RAN may assign, to the WCD, a traffic channel from a second wireless coverage area, defined using a second frequency, for supporting the call.
Abstract:
Methods and system for managing, during an external event, a wireless communication device configured to search for an available wireless communication system from among a plurality of wireless communication systems in accordance with a first priority order. Upon detecting that an external event has occurred, a communication network may determine, based in part on the external event, a period of time that is associated with the external event, and cause the wireless communication device to search, for the determined period of time, for an available wireless communication system from among the plurality of wireless communication systems in accordance with a second priority order instead of the first priority order. Upon expiration of the determined period of time, the communication network may cause the wireless communication device to search for the available wireless communication system in accordance with the first priority order instead of the second priority order.