A communication method and apparatus, the method including performing, by a terminal device or a chip of the terminal device, sending a master cell group (MCG) failure message to a master node (MN) via a secondary node (SN) in response to detecting that a wireless connection fails, and further in response to a secondary cell group (SCG) not failing, performing cell selection in response to the SCG failing, and accessing a target cell in response to the target cell being a candidate cell pre-configured by the MN, where the target cell is a cell selected by the terminal device during the cell selection, where the SCG is a group of cells associated with the SN, and where the MCG is a group of cells associated with the MN.

Aspects directed towards Quality of Service (QoS) flow remapping are disclosed. In an example, upon detecting a mapping reconfiguration of a first QoS flow from a first data radio bearer (DRB) to another DRB, a Service Data Adaptation Protocol (SDAP) control protocol data unit (PDU) is generated indicating that a final SDAP data PDU associated with the first QoS flow has been transmitted on the first DRB. The SDAP control PDU is then transmitted via the first DRB. In another example, upon detecting a mapping reconfiguration of a first QoS flow from a first DRB to another DRB, an end marker parameter is set in an SDAP header of a first SDAP data PDU received from an upper layer after the mapping reconfiguration indicating that the first SDAP data PDU is a final SDAP data PDU associated with the first QoS flow transmitted on the first DRB.

Aspects directed towards Quality of Service (QoS) flow remapping are disclosed. In an example, upon detecting a mapping reconfiguration of a first QoS flow from a first data radio bearer (DRB) to another DRB, a Service Data Adaptation Protocol (SDAP) control protocol data unit (PDU) is generated indicating that a final SDAP data PDU associated with the first QoS flow has been transmitted on the first DRB. The SDAP control PDU is then transmitted via the first DRB. In another example, upon detecting a mapping reconfiguration of a first QoS flow from a first DRB to another DRB, an end marker parameter is set in an SDAP header of a first SDAP data PDU received from an upper layer after the mapping reconfiguration indicating that the first SDAP data PDU is a final SDAP data PDU associated with the first QoS flow transmitted on the first DRB.

A wireless device may receive one or more configuration parameters of a first cell and a second cell. The one or more configuration parameters may indicate a first bandwidth part (BWP) of the first cell, a second BWP of the second cell, and beam failure recovery configuration parameters of the first BWP are for one or more beam failure recoveries of the second BWP of the second cell. The wireless device may switch to the first BWP of the first cell as an active BWP of the first cell. Based on the beam failure recovery configuration parameters of the first BWP being for one or more beam failure recoveries of the second BWP, the wireless device may switch to the second BWP as an active BWP of the second cell.

A wireless device may receive one or more configuration parameters of a first cell and a second cell. The one or more configuration parameters may indicate a first bandwidth part (BWP) of the first cell, a second BWP of the second cell, and beam failure recovery configuration parameters of the first BWP are for one or more beam failure recoveries of the second BWP of the second cell. The wireless device may switch to the first BWP of the first cell as an active BWP of the first cell. Based on the beam failure recovery configuration parameters of the first BWP being for one or more beam failure recoveries of the second BWP, the wireless device may switch to the second BWP as an active BWP of the second cell.

A computer-implemented method for automatically adding and/or deleting frequency relations in cells of a wireless communication network may include collecting a first list of frequencies broadcasted by a cell, neighboring co-site cells of the cell, and neighboring cells surrounding the cell. The method may further include collecting a second list of frequencies for defined frequency relations of the cell, and comparing the first list and the second list to determine if the second list is missing any of the frequencies of the first list and if the second list includes extra frequencies not present in the first list. The method may further include communicating a request to add frequency relations corresponding to any missing frequencies to the defined frequency relations of the cell, and communicating a request to delete frequency relations corresponding to any extra frequencies from the defined frequency relations of the cell.

A method for congestion control at an eNodeB is described, comprising detecting congestion at an eNodeB and entering a congestion control mode, receiving, at the eNodeB, a new user equipment (UE) connection request that contains a radio resource control (RRC) establishment cause, and using the RRC establishment cause for identifying a congestion management strategy, the congestion management strategy comprising one of initiating a handover for an existing LTE bearer, or redirecting the new UE connection request to a 3G nodeB.

A method of allocating transport resources to beams in a network area, wherein the beams comprise beam formed radio channels (505, 507, 513, 515) between antenna points (509, 511, 517) and wireless devices (501, 503) in the network area. The method comprises receiving candidate beam information relating to a plurality of candidate beams for use in future communications between antenna points and wireless devices (201); and allocating transport resources to one or more antenna points in the network area based on the candidate beam information (203).

The present disclosure relates to a communication technique for converging a 5G communication system, which is provided to support a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The disclosure may be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service, or the like) based on the 5G communication technology and the IoT related technology. The disclosure relates to a method for recovering a beam into a correct beam according to a position of a terminal using a non-contention-based and contention-based beam failure recovery method in order to recover a beam failure in which communication is disconnected due to movement of a terminal or the like in a wireless communication system performing beam-based communication services.

The present disclosure relates to a communication technique for converging a 5G communication system, which is provided to support a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The disclosure may be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service, or the like) based on the 5G communication technology and the IoT related technology. The disclosure relates to a method for recovering a beam into a correct beam according to a position of a terminal using a non-contention-based and contention-based beam failure recovery method in order to recover a beam failure in which communication is disconnected due to movement of a terminal or the like in a wireless communication system performing beam-based communication services.