Scalable video coding over simultaneous unicast/multicast LTE DL shared channel

摘要

Embodiments contemplate devices and techniques for receiving unicast and multicast transmissions over a downlink (DL) shared channel in parallel, for example an LTE DL shared channel (SCH). For example, one or more hybrid automatic repeat request (HARQ) entities may be configured to perform retransmissions of the multicast and/or unicast messages. Common and/or dedicated (e.g., separate) HARQ entities may be utilized for retransmission. The multicast downlink shared channels may be activated and/or deactivated on demand. The activation and/or deactivation may be performed using radio resource control (RRC) signaling and/or Medium Access Control (MAC) signaling. The multicast and/or unicast downlink shared channel data may include scalable video coding (SVC) data of varying priority. Embodiments also contemplate the use of simultaneous (e.g. parallel) multicast/unicast for scalable video coding transmission over WiFi/802.11 protocol signals.

主权项

1. A method for sending data, the method comprising:
sending a configuration to a first WTRU for a first downlink shared channel (first DL-SCH) for one or more unicast transmissions; receiving a first signal-to-noise ratio (first SNR) of the first WTRU; sending a configuration to the first WTRU for a second downlink shared channel (second DL-SCH) for one or more multicast transmissions; sending to the first WTRU at least one unicast transmission over the first DL-SCH, the at least one unicast transmission including scalable video coding (SVC) enhanced layer data and an indication to the first WTRU to activate at least one multicast receiver; sending to the first WTRU at least one multicast transmission over the second DL-SCH, the at least one multicast transmission including SVC base layer data; sending the at least one multicast transmission to a second WTRU; receiving a second SNR of the second WTRU; and determining a throughput for the at least one multicast transmission based, at least in part, on the lower of the first SNR or the second SNR.