Abstract:
The invention concerns a method for a handover procedure of a user terminal (UE) on radio interfaces from a source base station (SBS) to a target base station (TBS) whereby the target base station (TBS) sends out user data to the user terminal (UE) before reception of a message indicating the termination of the handover procedure (HO Complete), the user terminal (UE) uses an uplink feedback for sending at least one message (Feedback) associated to the downlink transmission of said user data to the target base station (TBS), and the target base station (TBS) uses said at least one message (Feedback) associated to the downlink transmission of said user data as an indication of the presence of the user terminal (UE) within the range of the target base station (TBS), a base station (BS1- BS8) and a network (CN) therefor.
Abstract:
The present invention is related to a method and apparatus for facilitating lossless handover in a wireless communication system comprising at least one wireless transmit/receive unit (WTRU), a source evolved Node B (eNB), a target eNB, and a mobility management entity/user plane entity (MME/UPE) where the WTRU is in wireless communication with the source eNB. The source eNB determines to handover the WTRU to the target eNB, requests status reports from the WTRU, and requests handover to the target eNB. The handover request includes context information relating to the WTRU which is sent to the target eNB. The target eNB configures resources for the WTRU and transmits a handover response signal to the source eNB. The source eNB commands the WTRU to perform a handover to the target eNB and forwards data to the target eNB. The WTRU performs the handover to the target eNB.
Abstract:
A method in Field Programmable Gate Array for processing packets received at a media gateway is provided. The method includes ascertaining whether a received packet is a UDP (User Datagram Protocol) packet. The method also includes comparing first portion of UDP destination port number from UDP packet header with first portion with UDP port base that has been set up in media gateway. If a match exist, employing second portion of UDP destination port number as a key to UDP port table to ascertain whether packets associated with media stream ID are to be discarded, and discarding received packet if packet associated with media stream ID is to be discarded. If not, obtaining media processing CPU ID associated with media stream ID, formulating destination MAC address, and updating packet with destination MAC address, thereby enabling packet to be switched to media processing CPU associated with media processing CPU ID.
Abstract:
Described herein are mechanisms and methods that facilitate generation of receiver status message (e.g., acknowledgments and/or negative acknowledgments) before, during, and after a handoff of an access terminal (user equipment) from a first transceiver module to a second transceiver module. A network module can generate receiver status messages during a handoff and informs a target transceiver module of when it can begin to generate receiver status messages for data received from an access terminal.
Abstract:
A node for a communication system that is configured to communicate with a mobile node via a first connection and to communicate with a third node via a first forwarding path is disclosed. After a procedure for handover of the first connection to a second connection between the mobile node and a target network node is initiated, data is communicated from the node to the third node for transmission to the target network node via a second forwarding path. The third node is configured to receive the data and to forward it to the target network node.
Abstract:
A data transmission method in a mobile communication system is disclosed. The present invention is suitable for retaining continuity of a data service in case that a mobile subscriber station carries out handover. The present invention includes the steps of receiving a message information (S41 ) indicating a handover completion of a mobile subscriber station from the second base station, releasing a radio resource of the first base station for the mobile subscriber station according to the message, and after releasing the radio resource, transmitting data (S42) to be transmitted to the mobile subscriber station to the first base station to the second base station.
Abstract:
A computer-implemented method for authenticating a cellular recipient to facilitate a call from a first caller's first communication device to a cellular recipient's cellular telephone is provided. The first caller dials an enterprise extension number and a server employs a cellular telephone number associated with cellular telephone to attempt to direct the call to cellular telephone in a public cellular network. The method includes initiating, prior to completing an end-to-end bearer channel between first communication device and cellular telephone, an authentication period having a finite duration. The method also includes receiving first authentication data from cellular telephone. If first authentication data matches, during the authentication period, with second authentication data that is pre-arranged with the server, completing the end-to-end bearer channel between first communication device and cellular telephone. However, if authentication period expires before first authentication data is received, denying the call and preventing the establishment of end-to-end bearer channel.
Abstract:
A method for implementing communication between at least two client devices is provided. The first client device of the at least two client devices is disposed externally with respect to a firewall of an internal network. The method includes performing NAT (Network Address Translation) traversal between the first client device and a media server that is disposed internally with respect to the firewall of the internal network. The NAT traversal is configured to ascertain a NAT scheme employed for exchanging packets with the first client device. The method also includes establishing a communication path at least between the media server and the first client device, wherein logic for implementing the NAT traversal and logic for implementing the establishing the communication path are both implemented in the media server. The method further includes employing the media server to facilitate the communication.