Abstract:
A method and system for scanning for target coverage in order of signal strength threshold. In a wireless communication system that defines a plurality of wireless coverage areas, a user equipment device (UE) may seek to select one of the coverage areas in which to operate. Each coverage area may have a respective downlink receive signal strength threshold (DSST) defining a minimum downlink receive signal strength for triggering UE selection of the coverage area. While operating in the wireless communication system, the UE may be arranged to rank-order the coverage areas in order of their respective DSSTs so as to define a sequence of the coverage areas. The UE may be arranged to then scan the coverage areas in order of the defined sequence, in search of a coverage area to select to operate in.
Abstract:
Disclosed is a method and system to help ensure contention-free response to a paging message. As disclosed, when a base station transmits a paging message for receipt by a UE, the base station includes in the paging message a contention-free random-access preamble useable by the UE to engage in contention-free random access in response to the paging message. The UE thus receives the paging message and responsively engages in a contention-free random access process with the base station, to establish a radio-link-layer connection between the UE and the base station.
Abstract:
A method, system, and apparatus for assigning resources to a wireless communication device that experienced a call drop. A RAN may receive an origination request from a mobile station and make a first determination that within a predetermined amount of time prior to receiving the origination request the mobile station experienced a call drop. Responsive to making the first determination, the RAN may make a second determination that the RAN should allocate a first extent of resources to the mobile station rather than allocating a second extent of resources to the mobile station. The first extent of resources may be less than the second extent of resources. Responsive to making the second determination, the RAN may allocate the first extent of resources to the mobile station in response to the origination request rather than allocating the second extent of resources to the mobile station in response to the origination request.
Abstract:
A network node receives from a mobile terminal being served by a first coverage area a measurement report indicating signal level of a second coverage area detected by the mobile terminal. The network node then makes a determination, by considering PLMNs of the mobile terminal and of the coverage areas, of (i) whether the mobile node is a home mobile node of the first coverage area and (ii) whether the mobile node is a home mobile node of the second coverage area. Based on that determination, the network node then selects a handoff threshold. And based on the handoff threshold and the reported signal level, the network node decides whether to trigger handoff of the mobile terminal from the first coverage area to the second coverage area. The network node then triggers the handoff if the decision is to do so.
Abstract:
When a UE engages in application-layer session setup signaling with a session server via a radio access network and gateway, the UE conveys in its session setup signaling an indication of the UE's observed air interface quality (e.g., received signal strength or signal to noise ratio) and perhaps an indication of a characteristic of an neighboring air interface (e.g., a duplex configuration or band of the neighboring air interface). The session server then reports the UE's indicated air interface quality and perhaps neighboring air interface characteristic to a policy server, and the policy server uses that information as a basis to select a quality of service level for a bearer to be established between the UE and the gateway for carrying media content of the session. The policy server then invokes establishment of a bearer having the selected quality of service level.
Abstract:
A UE gauges how many UEs are currently served in each of various coverage systems, by evaluating downlink control channel signaling in each coverage system to determine from the control signaling an extent to which the signaling provides for UE scheduling and to establish a corresponding relative measure of an extent to which the coverage system is serving UEs. In an example implementation, this evaluation may involve eliminating from consideration any control channel signaling that is not associated with UE scheduling, so as to determine by exclusion an extent to which the downlink control channel signaling is associated with UE scheduling. The UE then compares such relative measures of the various coverage systems as a basis to select a coverage system in which to operate, such as by favoring operation in the coverage that thereby seems to be serving the fewest number of UEs.
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:
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.