摘要:
Generally, this disclosure provides apparatus and methods for improved handover with ping pong avoidance in wireless heterogeneous networks. The UE device may include a handover (HO) module configured to determine a reference signal received power (RSRP) difference between a serving cell and a neighbor cell and to select a TimeToTrigger (TTT) related to an HO measurement report based, at least in part, on the RSRP difference.
摘要:
A prioritized cell identification and measurement method is disclosed. The method classifies frequency layers to be monitored and measured by an user equipment into normal- and reduced-performance groups. Several different embodiments are described. Where appropriate, the corresponding signaling design is also suggested. User equipment can adopt one or several of these embodiments, and can change configurations in a semi-static manner based on operating conditions.
摘要:
Systems and methods for prioritizing inter-frequency measurement are disclosed herein. User equipment (UE) may be configured to communicatively couple to an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB). The eNB may determine a priority for performing each of a plurality of inter-frequency measurement. The eNB may indicate the priority of each measurement to the UE. The eNB may transmit lists of higher priority and lower priority measurement objects. The lists may be separate and/or concatenated. Alternatively, or in addition, each measurement object may include a priority indicator, or the priority may be determined from the type of measurement object. In some embodiments, the eNB may provide indications of normal priority and low priority measurement objects and/or indications of normal priority and high priority measurement objects. The UE may perform measurements according to the indicated priorities.
摘要:
Systems, methods, and device for adjusting an operation time of a radio link failure timer are disclosed herein. User equipment (UE) may be configured to communicatively couple to an evolved Universal Terrestrial Radio Access Network (E-UTRAN). The UE use different radio link failure timer parameters depending on the speed of the UE. The radio link failure timer may run for a longer time for rapidly moving UEs and run for a shorter time for slowly moving UEs. In an embodiment, the UE may scale the radio link failure timer by a scaling factor. In another embodiment, the UE may include multiple radio link failure timers for different speeds. The radio link failure timer parameters for each speed may be specified by the E-UTRAN in a one-to-one communication. The E-UTRAN may determine which parameters to use for each UE based on characteristics of the UE.
摘要:
Systems and methods for cell selection and/or reselection based on prioritize nodes are disclosed herein. User equipment (UE) may be configured to determine whether to select and/or reselect an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB). The eNB may be a dedicated eNB and/or may be communicatively coupled to a dedicated core network (CN). The dedicated eNB and/or the dedicated CN may be configured to optimize performance for UEs sharing particular characteristics. Accordingly, the selection and/or reselection criteria may be biased to encourage the UE to select and/or reselect towards a dedicated eNB and/or an eNB coupled to a dedicated CN. The eNB and/or CN may be dedicated to supporting particular types of UEs, types of nodes, types of traffic, types of subscriptions, UE mobilities, applications/services, other predetermined categories, and/or the like.
摘要:
Systems and methods for configuring measurement gaps for dual connectivity are disclosed herein. User equipment (UE) may be configured to communicatively couple to a plurality of Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node Bs (eNBs). For example, the UE may include a plurality of transceivers, and each transceiver may be coupled to a different cell group. A measurement gap may need to be configured for each transceiver. However, the transceivers may interfere with each other's measurement gaps. In an embodiment, a duration of a measurement gap may be increased over a default value to reduce the number of interruptions per measurement gap. Alternatively, or in addition, measurement gaps may begin and/or end at the same. The measurement gaps may have a same repetition period and be aligned each period. Or, the measurement gaps may have different repetition periods and may or may not align periodically.