Signaling techniques for a multimedia-aware radio and network adaptation
An approach to enhance quality of experience (QoE) in a wireless multimedia communication system is disclosed. A signaling mechanism is provided to make application-layer parameters of a multimedia application to be accessible in one or more network interfaces including an air interface, an access network interface, and a core network interface. Also, the application-layer parameters may be included in quality of service (QoS) class definitions to make the application-layer parameters accessible at the one or more network interfaces. The signaling mechanism and inclusion of application-layer parameters into the QoS class definitions is to enable the QoE-aware link adaptation, resource allocation, joint source channel coding based cross-layer optimizations.
1. A method to enhance quality of experience (QoE) in a wireless communication system, comprising:
receiving, at a base station (BS) in a WiMax network, a dynamic service addition request (DSA-REQ) and one or more multimedia-specific application layer parameters, the DSA-REQ comprising a request to create a WiMax service flow for transmission of multimedia content to a mobile station (MS);
transmitting a trigger signal to create the WiMax service flow based on the one or more multimedia-specific application layer parameters, the WiMax service flow comprising a quality of service (QoS) class defined for the WiMax network, the WiMax service flow prioritized based on the QoS class;
transmitting a dynamic service addition response (DSA-RSP) to the MS;
receiving a source-encoded signal comprising the multimedia content;
generating a source-channel encoded signal using the source-encoded signal and the one or more multimedia-specific application layer parameters; and
transmitting the source-channel encoded signal to the MS via the WiMax service flow.
2. The method of claim 1 , comprising providing the one or more multimedia-specific application layer parameters to one or more of a network layer, a medium access control layer, and a physical layer.
3. The method of claim 1 , wherein the one or more multimedia-specific application layer parameters comprise one or more of a rate distortion function parameters, QoE metrics, multimedia codec type, source encoding and decoding capability, multimedia quality metrics, multimedia coding and layering parameters, frame type, frame rate, quantization parameters, quantity of group of pictures, and application-level constraints.
4. The method of claim 1 , comprising modifying one or more parameters of an existing WiMax service flow based on the one or more multimedia-specific application layer parameters.
5. The method of claim 1 , further comprising using a joint source-channel coding technique to generate the source-channel encoded signal.
6. An article, comprising a non-transitory machine-readable storage medium storing instructions that, when executed by a processor, cause a mobile station (MS) in a WiMax network to:
transmit a dynamic service addition request (DSA-REQ) and one or more multimedia-specific application layer parameters, the DSA-REQ comprising a request to create a WiMax service flow for transmission of multimedia content to the MS, the WiMax service flow comprising a (QoS) class defined for the WiMax network, the WiMax service flow prioritized based on the QoS class, the QoS class determined based on the one or more multimedia-specific application layer parameters;
receive a dynamic service addition response (DSA-RSP) in response to the DSA-REQ; and
receive a source-channel encoded signal comprising the multimedia content via the WiMax service flow.
7. The article of claim 6 , wherein the one or more multimedia-specific application layer parameters comprise one or more of a rate distortion function parameters, QoE metrics, multimedia codec type, source encoding and decoding capability, multimedia quality metrics, multimedia coding and layering parameters, frame type, frame rate, quantization parameters, quantity of group of pictures, and application-level constraints.
8. The article of claim 6 , the machine-readable medium storing instructions that, when executed by the processor, cause the MS to transmit a DSA-REQ comprising a request to modify one or more parameters of an existing WiMax service flow based on the one or more multimedia-specific application layer parameters.
9. The article of claim 6 , the source-channel encoded signal generated using a joint source-channel coding technique.
10. An article, comprising a non-transitory machine-readable storage medium storing instructions that, when executed by a processor, cause a base station (BS) in a WiMax network to:
receive a dynamic service addition request (DSA-REQ) and one or more multimedia-specific application layer parameters, the DSA-REQ comprising a request to create a WiMax service flow for transmission of multimedia content to a mobile station (MS);
transmit a trigger signal to create the WiMax service flow based on the one or more multimedia-specific application layer parameters, the WiMax service flow comprising a quality of service (QoS) class defined for the WiMax network, the WiMax service flow prioritized based on the QoS class;
transmit a dynamic service addition response (DSA-RSP) to the MS;
receive a source-encoded signal comprising the multimedia content;
generate a source-channel encoded signal using the source-encoded signal and the one or more multimedia-specific application layer parameters; and
transmit the source-channel encoded signal to the MS via the WiMax service flow.
11. The article of claim 10 , the machine-readable medium storing instructions that, when executed by the processor, cause the BS to provide the one or more multimedia-specific application layer parameters to one or more of a network layer, a medium access control layer, and a physical layer.
12. The article of claim 10 , wherein the one or more multimedia-specific application layer parameters comprise one or more of a rate distortion function parameters, QoE metrics, multimedia codec type, source encoding and decoding capability, multimedia quality metrics, multimedia coding and layering parameters, frame type, frame rate, quantization parameters, quantity of group of pictures, and application-level constraints.
13. The article of claim 10 , the machine-readable medium storing instructions that, when executed by the processor, cause the BS to transmit a trigger signal to modify one or more parameters of an existing WiMax service flow based on the one or more multimedia-specific application layer parameters.
14. The article of claim 10 , the machine-readable medium storing instructions that, when executed by the processor, cause the BS to use a joint source-channel coding technique to generate the source-channel encoded signal.