Video packets over a wireless link under varying delay and bandwidth conditions
View Patent ↗An apparatus in a wireless network includes a video encoder for encoding uncompressed video information into packets with variable length of compressed frames, and a decision processor for selecting a partial bandwidth and queuing delay on a wireless channel for each of the packets based on an intended reception quality. Preferably, the queuing delay and partial bandwidth are one of a plurality of distinct queuing delay and partial bandwidth representative of wireless transmission quality of service classes.
1. An apparatus in a wireless network comprising:
a video encoder for encoding uncompressed video information into packets with variable length of compressed frames; and
a decision processor for selecting a QoS class associated with a partial bandwidth on a wireless channel for each of said packets based on an intended reception quality, wherein said decision processor selects the QoS class for each of said packets based upon an objective function that is optimized to achieve a frame constant delay objective that minimizes delivery jitter, wherein the objective function specifies the partial bandwidth and a queuing delay for each of said packets that is based on said intended reception quality.
2. Apparatus in claim 1 , wherein said objective function comprises at least one of a maximum bandwidth (kbps), a guaranteed bit rate (kbps), a delivery order, a maximum service data unit SDU size (octets), service data unit SDU format information (bits), a service data unit SDU error ratio, a residual bit error ratio, a delivery of erroneous service data units SDUs, a transfer delay (ms), a traffic handling priority, and an allocation/retention priority.
3. The apparatus as recited in claim 1 , wherein said partial bandwidth is one of a plurality of distinct partial bandwidth for third generation wireless quality of service classes.
4. The apparatus as recited in claim 3 , wherein said plurality of distinct partial bandwidth are representative of four quality of service classes conversational, streaming, interactive and background.
5. The apparatus as recited in claim 1 , wherein said partial bandwidth is one of a plurality of distinct partial bandwidth selectable from said total bandwidth, each of said distinct partial bandwidth being associated with a distinct said intended reception quality.
6. The apparatus as recited in claim 5 , wherein said plurality of distinct partial bandwidth are four distinct bandwidths.
7. The apparatus as recited in claim 6 , wherein each of said four distinct bandwidths is associated with a distinct one of four quality of service classes associated with a distinct said intended reception quality.
8. The apparatus as recited in claim 7 , wherein said four quality of service classes comprise third generation (3G) quality of service classes: conversational, streaming, interactive and background.
9. The apparatus as recited in claim 1 , wherein said intended reception quailty comprises at least one of a maximum bandwidth (kbps), a guaranteed bit rate (kbps), a delivery order, a maximum service data unit SDU size (Octets), service data unit SDU format information (bits), a service data unit SDU error ratio, a residual bit error ratio, a delivery of erroneous service data units SDUs, a transfer delay (ins), a traffic handling priority, and an allocation/retention priority.
10. The apparatus as recited in claim 1 , wherein said encoding comprises encoding said video information as uncompressed video frames of equal bits into packets with variable length of compressed video.