摘要:
An apparatus of a Radio Access Network (RAN) node, a system, and a method. The apparatus includes one or more processors to generate a conditional handover (CHO) execution message to a user equipment (UE), the CHO execution message including a plurality of execution conditions to trigger execution of a handover (HO) of the UE from the RAN node to a target RAN node; and causing transmission of the CHO execution message to the UE.
摘要:
Embodiments of the present disclosure are directed toward devices and methods for fast radio link recovery in cellular networks. In one embodiment, the signal strength of the serving cell is compared to the signal strength of a target cell, and a radio link failure (RLF) timer is terminated or shortened based on the comparison. Alternatively, a second shorter timer may be used as opposed to modifying the current timer. In some embodiments, the modification of RLF timers may be triggered by the start of a measurement trigger timer. This may allow a user equipment to more quickly establish a connection with a target cell in situations where radio link failure or handover failure are likely to occur. In some instances, the parameters for terminating or shortening the radio link failure timer, or starting an additional timer, may be provided to the user equipment by a network.
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:
Embodiments of the present disclosure describe systems, devices, and methods for load balancing in a wireless communication network based on user equipment (UE) mobility. In embodiments, a UE may receive a plurality of cell reselection priority configurations designated for different levels of UE mobility. The UE may determine its mobility and select one of the cell reselection priority configurations based on the determined mobility. The UE may establish a radio resource control (RRC) connection, such as an RRC idle mode connection, on a carrier frequency and/or cell based on the selected cell reselection priority configuration. Other embodiments may be described or claimed.
摘要:
Technology for configuring measurement gap patterns is disclosed. An evolved node B (eNB) can generate multiple measurement gap patterns for a user equipment (UE), wherein each measurement gap pattern indicates at least one set of consecutive subframes within a defined time period during which the UE is to perform inter-frequency measurements for a selected cell. The eNB can configure the multiple measurement gap patterns from the eNB to the UE, the UE being configured to perform the inter-frequency measurements for selected cells within a group of cells according to the multiple measurement gap patterns.
摘要:
Embodiments of user equipment (UE) and method for adaptively selecting an A3offset-TTT pair for handover in a wireless access network are generally described herein. In some embodiments, the UE may select an A3offset value based on target cell Reference Signal Received Power (RSRP) and select a time-to-trigger (TTT) based on serving cell RSRP. A measurement report may be transmitted to an eNodeB for handover when the target cell RSRP exceeds the serving cell RSRP by at least the A3offset value for the TTT. The A3offset value may be selected to be inversely related to the target cell RSRP and the TTT may be selected to be directly related to the serving cell RSRP.
摘要:
Methods, systems, and devices for mobility optimization in a heterogeneous network are disclosed herein. A base station includes an anchor module, a context information module, and a transmission point module. The anchor module configures the base station as a virtual anchor cell for a plurality of small cells. The context information module is configured to maintain context information for user equipment (UE). The context information for the UE is maintained by the context information module while any small cell of the plurality of small cells is configured as a TP for the UE. The transmission point (TP) change module is configured to send at least a portion of the context information to a small cell configured as the TP for the UE.
摘要:
A UE may decode a radio-resource control (RRC) reconfiguration message comprising a conditional handover (CHO) configuration (CHO-Config) which may identify a CHO configuration for at least one target candidate cell. The CHO configuration may include two or more CHO triggering events for an entry condition. The UE may monitor measurement quantities of the target candidate cell for the entry condition to determine if any of the CHO triggering events are met, start a first count-down timer when the entry condition of a first of the CHO triggering events is met and start a second count-down timer when the entry condition of a second of the CHO triggering events is met. The UE may apply the CHO configuration to the target candidate cell when both of the two CHO triggering events remain fulfilled upon expiration of the both timers.
摘要:
An apparatus of New Radio (NR) User Equipment, a system, and a method. The apparatus includes one or more processors to decode a broadcast system information block (SIB) message from a radio access network node (RAN node), the SIB including UE configuration information including an indication of one or more conditions to trigger a relaxation of radio resource management (RRM) measurements by the UE in cell selection or reselection, the one or more conditions including at least one of a mobility state of the UE and a location of the UE in a cell of the gNB; configure the UE based on the configuration information; determine that the one or more conditions are satisfied; and relax RRM measurements by the UE based on determining that the one or more conditions are satisfied.
摘要:
Embodiments of a Next Generation Node-B (gNB) and User Equipment (UE) are generally described herein. The gNB may transmit control signaling to configure transmission of position reference signals (PRSs) by a plurality of transmit-receive points (TRPs). The gNB may receive, from the UE, for each of the TRPs, a set of signal location parameters (SLPs). The gNB may perform an iterative process to estimate a position of the UE. For a current iteration, the gNB may: determine a current estimate of the position of the UE based on a current plurality of sets of SLPs; and determine a cost function for each of the current plurality of sets of SLPs. The gNB may determine, based on the cost functions, a next plurality of sets of SLPs for a next estimate of the position of the UE.