Systems and methods are provided for optimizing resource consumption by bringing intelligence to the key allocation process for fast roaming. Specifically, embodiments of the disclosed technology use machine learning to predict which AP a wireless client device will migrate to next. In some embodiments, machine learning may also be used to select a subset of top neighbors from a neighborhood list. Thus, instead of allocating keys for each of the APs on the neighborhood list, key allocation may be limited to the predicted next AP, and the subset of top neighbors. In some embodiments, a reinforcement learning model may be used to dynamically adjust the size of the subset in order to optimize resources while satisfying variable client demand.

A method and system for handling roaming in train-to-trackside wireless networks including: receiving, by an access point (AP.sub.i) currently associated with a train access terminal installed on-board a train, radio measurements of signals received by the train access terminal from access points of the train-to-trackside wireless network; determining a next access point (AP.sub.next) providing the highest signal quality (maxSQ); evaluating compliance with roaming criteria including: the next access point (AP.sub.next) is included in a list of candidate access points (N.sub.i); the time elapsed since the last roaming exceeds a minimum permanency time (t.sub.p); the highest signal quality (maxSQ) exceeds the signal quality (SQ(i)) of the access point (AP.sub.i) by a roaming margin; if the roaming criteria are met, sending a roaming command instructing the train access terminal to roam to the next access point (AP.sub.next).

This application discloses a handover method to hand over relay UE and remote UE between different eNBs. The handover method includes: a source eNB determines based on a measurement report of the relay UE, to hand over the relay UE to a target eNB; sends a first handover required message to a source MME of the relay UE and sends a second handover required message to a source MME of the remote UE; the source MME sends a mobility management context of the remote UE and a mobility management context of the relay UE to a target MME to which the target eNB belongs; the target MME receives a redirection request message from the source MME; and sends information about the remote UE and information about the relay UE to the target eNB.

This application discloses a handover method to hand over relay UE and remote UE between different eNBs. The handover method includes: a source eNB determines based on a measurement report of the relay UE, to hand over the relay UE to a target eNB; sends a first handover required message to a source MME of the relay UE and sends a second handover required message to a source MME of the remote UE; the source MME sends a mobility management context of the remote UE and a mobility management context of the relay UE to a target MME to which the target eNB belongs; the target MME receives a redirection request message from the source MME; and sends information about the remote UE and information about the relay UE to the target eNB.

A method for restoring a wireless backhaul link includes: measuring the signal quality of a first wireless backhaul link between a first new radio (NR) host station being accessed by a NR wireless backhaul base station and the NR wireless backhaul base station; in a case that the signal quality of the first wireless backhaul link is less than a link reselection threshold corresponding to the NR wireless backhaul base station, beginning a new search for an adjacent NR host station; measuring signal quality of a second wireless backhaul link between the NR wireless backhaul base station and a second NR donor base station; and initiating, when the signal quality of the second wireless backhaul link being greater than a first threshold continues a duration exceeding a first time length, a random access request to the second NR donor base station, so as to establish a wireless backhaul link with the second NR donor base station.

Disclosed are a configuration information transmission method, a central unit (CU) and a distributed unit (DU), and a computer storage medium, for use in reducing system overheads. The configuration information transmission method: includes a CU of a radio access network (RAN) receives a first interface message from a DU of the RAN, wherein the first interface message carries first indication information, the first indication information is used for indicating at least one terminal device, and a bandwidth part (BWP) currently activated by the at least one terminal device is not configured with a common search space (CSS).

Disclosed are a configuration information transmission method, a central unit (CU) and a distributed unit (DU), and a computer storage medium, for use in reducing system overheads. The configuration information transmission method: includes a CU of a radio access network (RAN) receives a first interface message from a DU of the RAN, wherein the first interface message carries first indication information, the first indication information is used for indicating at least one terminal device, and a bandwidth part (BWP) currently activated by the at least one terminal device is not configured with a common search space (CSS).

A terminal device for use with a wireless telecommunications network, the terminal device including a transceiver; and a controller configured to control the transceiver to exchange data with the wireless telecommunications network using one of a first communications service and a second communications service, the first communications service being associated with a first quality of service for exchanging data and the second communications service being associated with a second quality of service for exchanging data. The controller is configured to control the transceiver to establish one of a first set of radio connection states with the wireless telecommunications network and one of a second set of radio connection states with the wireless telecommunications network, and control the transceiver to establish the radio connection state of the first communications service independently of the radio connection state of the second communications service.

A terminal device for use with a wireless telecommunications network, the terminal device including a transceiver; and a controller configured to control the transceiver to exchange data with the wireless telecommunications network using one of a first communications service and a second communications service, the first communications service being associated with a first quality of service for exchanging data and the second communications service being associated with a second quality of service for exchanging data. The controller is configured to control the transceiver to establish one of a first set of radio connection states with the wireless telecommunications network and one of a second set of radio connection states with the wireless telecommunications network, and control the transceiver to establish the radio connection state of the first communications service independently of the radio connection state of the second communications service.

The present technology relates to a wireless communication device that is adapted to be capable of effectively utilizing frequency resources. The wireless communication device is a wireless communication device that is connected to one or a plurality of target wireless communication devices, and that includes: a transmission unit that transmits, to another wireless communication device, a measurement request signal requesting measurement related to a propagation status of a signal from the target wireless communication device; and a receiving unit that receives a measurement request response signal transmitted from the another wireless communication device in response to the measurement request signal, the measurement request response signal including a result of the measurement. The present technology can be applied to a wireless base station and a wireless terminal station.