摘要:
A video data communication method and apparatus for a data communication that enable improving video quality, at a recipient device, and transmission efficiency by transmitting video data using both contention free transmission mechanism and priority-based transmission mechanism are provided. A video data transmission method ion includes dividing video data into different types of slices; assigning different transport priorities to slice types in accordance with importance for recovering, at a recipient device, the video data; and transmitting the slices on the basis of the transport priorities.
摘要:
A method quickly resuming a downlink service in a hard handover in a cellular mobile communication system. To provide the fast downlink service to an MS during a hard handover from an OBS to an NBS, the NBS receives handover user information from the OBS, and generates an MS temporary ID using the handover user information to identify the MS. If user data is generated for the MS before a connection is established for traffic transmission between the MS and the NBS, the NBS transmits the user data to the MS on an HCCH using the MS temporary ID.
摘要:
A method quickly resuming a downlink service in a hard handover in a cellular mobile communication system. To provide the fast downlink service to an MS during a hard handover from an OBS to an NBS, the NBS receives handover user information from the OBS, and generates an MS temporary ID using the handover user information to identify the MS. If user data is generated for the MS before a connection is established for traffic transmission between the MS and the NBS, the NBS transmits the user data to the MS on an HCCH using the MS temporary ID.
摘要:
A synchronous retransmission method in a mobile communication system supporting a multicast service wherein one response channel is assigned on a multicast service-by-multicast service basis, and a response signal is transmitted through the response channel only when at least one mobile terminal fails in decoding for a packet transmitted by the multicast service. Accordingly, the response signal is rapidly transferred to the packet transmitted by the multicast service, and overhead from to the response channel can be reduced.