Abstract: A transmission method is provided for a communication system in which communications using a plurality of communication methods having different transmission parameters are performed at the same frequency (in frequency bands that at least partially overlap with each other). The transmission method includes: generating a first symbol group that includes a control symbol for causing a communication partner apparatus to recognize that communication using a first communication method is to be performed and a second symbol group that includes a data symbol for the first communication method; transmitting the first symbol group at a first transmit power; and transmitting the second symbol group at a second transmit power that is smaller than the first transmit power.

Abstract: A gateway device includes a communication unit communicating a frame signal conforming to an IuUP (Iu User Plane) protocol with a wireless base station controller connected to a circuit switching network; a determination unit determining whether the frame signal received by the communication unit satisfies a predetermined condition or not; a conversion unit converting information included in the frame signal to information to be set in a flow control signal of an IMS (IP Multimedia Subsystem) when the frame signal satisfies the predetermined condition; and a flow control signal transmission unit transmitting the flow control signal to a communication device in the IMS.

Abstract: A method, user equipment, and system are provided which can open an ad-hoc Push-To-Talk (PTT) over Cellular (PoC) session for a call target group whose group identifier is managed in a remote network domain when the ad-hoc PoC session is opened. A PoC client requesting session initiation sends, to a first PoC server of a home network, a session INVITE message containing information of at least one group identifier. The first PoC server checks the group identifier information and sends a group list information request message to a second PoC server hosting a group identifier when identifier information of a network group other than the home network is included. The second PoC server acquires list information about a group in the request message and sends the information to the first PoC server.

Abstract: Disclosed herein are methods and systems for enabling recipient control of communications. According to an aspect, a method may include receiving a communication request identifying a proposed timing of a communication and/or a proposed communication channel for the communication. The method may also include receiving selection of an actual timing and/or an actual communication channel for the communication. Further, the method may include initiating the communication based on the selection.

Abstract: A virtual address is configured. A destination address and a capability information associated with each destination entity of a set of destination entities associated with a destination party are configured. Each destination entity from the set of destination entities is a push-capable, text-message-capable entity. Each destination entity from the set of destination entities is associated with a virtual address. The virtual address defines a destination remote from the destination party and remote from premises associated with the destination party.