Method and apparatus for efficient multimedia delivery in a wireless packet network

摘要

The present invention sends multiple versions of a multimedia packet to the base station, and, based on the radio channel and traffic characteristics, an appropriate version of the multimedia packet is selected to send to the mobile station at a given time. In this way, source transmission is improved to instantaneous conditions. The steps of the present invention are performed in conjunction with RTP used for multimedia transmission over internet protocol (IP) networks. In a first embodiment, the multiple versions are sent to the base station in the same RTP packet, and the base station strips out the extraneous versions. In a second embodiment, the base station receives multiple RTP packets having identical information in the packet header in many fields, and selects an appropriate one among these for transmission to the mobile station, discarding the rest.

主权项

1. A method for improving multimedia delivery over a wireless internet protocol (IP) network, comprising the steps of:
generating multiple versions of a multimedia packet; sending at least one of the multiple versions of a multimedia packet to a first node in a wireless network, wherein
the at least one of the multiple versions of the multimedia packet further comprises multimedia information, andthe at least one of the multiple versions of the multimedia packet are sent in different RTP packets; and selecting an appropriate version of the at least one of the multiple versions of a multimedia packet to send to a second node at a given time, wherein the selecting further comprises
receiving from the second node a channel condition of the second node, wherein the channel condition affects a perceptive performance of multimedia information from the multimedia packet, andselecting the appropriate version of the at least one of the multiple versions of the multimedia packet based on the channel condition of the second node.