Methods, apparatuses, and systems for wireless communications are described. A base station may send a message with configuration parameters to a wireless device, and the configuration parameters may be for at least two different types of carriers used for communications.

A communication system is described. The system includes: at least one gateway able to provide broadband connectivity, a set of ground terminals, and a set of high altitude platforms (HAPs), where at least one aerial platform is able to communicate with at least one gateway using radio frequencies, each HAP is able to communicate with ground terminals using radio frequencies, and each HAP is able to communicate with each other HAP using radio frequencies. Ways to handoff a ground terminal/gateway from one HAP beam to another HAP beam are described. Ways to handoff a ground terminal/gateway from one HAP to another HAP are described. Ways that keep the communications payload radios active when there is data traffic and put the radios in sleep mode otherwise, thereby adjusting the communications payload power consumption to the data traffic requirements as a function of time and coverage area, are described.

Performance optimization of a mobile communications network is disclosed where groups of wireless communication devices are moving together at high speed, e.g. on-board high speed trains. The performance optimization is provided via a multiple layered access context in terms of a low frequency layer serving as a large coverage cell overlapping with multiple smaller cells with higher performance in a high frequency layer.

An information processing method and a communication node are disclosed. The method configured in a first Device-to-Device (D2D) User Equipment (UE) includes: receiving bearer control information sent by a first evolved Node B (eNB); and changing to a second access node according to the bearer control information for communication data transmission, wherein the first eNB is a first access node or the second access node, and the second access node is the first eNB or a D2D relay node. Also disclosed is a computer storage medium.

A handover processing method and a base station are provided. The method includes: receiving a handover request message sent by a source base station or a core network node; sending a first message, according to the handover request message, to a second target base station to notify the second target base station that a handover of part or all of a service of a user equipment to the second target base station is to be performed; and sending a handover request acknowledge message to the source base station or the core network node to notify the source base station or the core network node to hand over the user equipment to at least one target cell of the first target base station and/or at least one target cell of the second target base station. The present application realizes a multi-cell handover.

Embodiments of the present disclosure relate to a policy control method and system, a network element, and a storage medium. A control plane network element establishes, for UE, a first DN connection that uses a first forwarding plane network element as an anchor. The method includes: when the control plane network element receives a handover notification message for the UE and determines that a second forwarding plane network element serves the UE, or when the control plane network element establishes, for the UE, a second DN connection that uses a second forwarding plane network element as an anchor, the control plane network element updates a forwarding path of the first DN connection, so that an updated forwarding path of the first DN connection passes through the second forwarding plane network element, and the second forwarding plane network element performs policy control on a packet on the first DN connection.

Methods and apparatuses are described for wireless communications. Cells may be grouped into a plurality of cell groups. Base stations may exchange messages regarding the cell groups so that one of the base stations may receive uplink signals from a wireless device.

A method and apparatus for performing switching control between uplink (UL) and sidelink (SL) in a wireless communication system is provided. A user equipment (UE) receives control information for a transmission direction of a specific type of communication from a network, and determines one of the UL or the SL as the transmission direction of the specific type of communication based on the control information. The specific type of communication may correspond to vehicle-to-everything (V2X) communication.

An embodiment of the present invention relates to a method for receiving and transmitting, by a mobility management entity (MME), tracking area update (TAU)-less power saving mode (PSM) related signals, the method comprising the steps of: receiving, from a terminal, a first TAU request message including information related to a TAU-less PSM entity; transmitting a TAU accept message in response to the first TAU request message; and receiving a second TAU request message including information related to release of the TAU-less PSM, wherein the second TAU request message including information related to release of the TAU-less PSM is regarded by the MME as an attach request.

A first base station may communicate with a second base station regarding a wireless device and handover. The first base station may send the wireless device's configuration to the second base station, and may receive, from the second base station, configuration parameters of carriers associated with the wireless device. The carriers may be of different types, and may have differences regarding reference signals. The first base station may inform the wireless device of the configuration parameters.