Apparatus and associated method for communicating multimedia information upon a communication link

• US 7,120,164 B2
• Filed: 12/20/2001
• Issued: 10/10/2006
• Est. Priority Date: 04/01/1999
• Status: Expired due to Term

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Le, Khiem
• Primary Examiner(s): Patel, Ajit
• Application Number:
  US10/029,684
• Publication Number:
  US 20020089998A1
• Time in Patent Office: 1,755 Days
• Field of Search: 370/405, 370/401, 370/465, 370/466, 370/467, 370/474, 370/470, 370/390, 370/476, 370/257, 370/351, 370/352, 370/201, 370/259, 370/337, 370/320, 370/311, 370/400, 370/389, 370/503, 370/342, 370/347, 370/441, 370/442, 379/93.07, 379/93.05, 379/96.06, 379/93.08
• US Class Current: 370/465
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

Apparatus, and associated method, converts real-time multimedia information generated pursuant to an RTP protocol into a form amenable for transmission upon a radio channel, such as a radio channel defined in a cellular communication system. When converted, the informational content of the multimedia information is transmitted in a manner that achieves spectral efficiency and low, constant delay. Once transmitted over the radio channel, the multimedia information is converted back into form corresponding to the RTP protocol before being sent to the receiving station.

Claims

1. Apparatus for a radio communication system having a wireless gateway, the radio communication system operable to communicate multimedia information with a first multimedia device and a second multimedia device, for providing the multimedia information transmitted by the first multimedia device upon a special channel in radio-link format to the second multimedia device, said apparatus comprising:

a real-time media source at which the multimedia information is sourced;

a requester coupled to said real-time media source to receive indications of when the multimedia information is to be communicated by the first multimedia device, said requester for requesting allocation of the special channel upon which to communicate the real-time media;

a control plane information generator coupled to receive indications of the multimedia information, said control plane information generator for generating control plane information, the control plane information controlling a manner by which to provide the multimedia information, once converted into packet-data form, to the second multimedia device; and

a format converter coupled to receive indications of the multimedia information in the radio-link format, said format converter for converting the multimedia information into the packet-data form, the multimedia information, once converted into the packet-data form provided to the second multimedia device in the manner determined by the control plane information.

2. The apparatus of claim 1 wherein said requester requests the allocation of the special channel with said control plane information generator.

3. The apparatus of claim 2 wherein said control plane information generator comprises a real-time manager, said real-time manager further for exchanging signaling with said requester pursuant to the requests for the allocation of the special channel.

4. The apparatus of claim 3 wherein the first multimedia device is defined in terms of logical layers, wherein said real-time media source is formed at a first logical layer and said requester is formed at a second logical layer, the first logical layer of a higher logical-layer level than the second logical layer.

5. The apparatus of claim 4 wherein the first logical layer comprises an application signaling layer.

6. The apparatus of claim 5 wherein the second logical layer comprises an adaptation layer.

7. The apparatus of claim 6 further comprising a third logical layer, the third logical layer of a lower logical-layer level than the second logical layer.

8. The apparatus of claim 7 wherein the third logical layer comprises a bearer signaling layer.

9. Apparatus for a radio communication system having a wireless gateway, the radio communication system operable to communicate multimedia information between a first multimedia device and a second multimedia device, for providing the multimedia information transmitted by the first multimedia device upon a special channel in radio-link format to the second multimedia device, said wireless gateway comprising:

a real-time media source at which the multimedia information is sourced;

a requester coupled to said real-time media source to receive indications of when the multimedia information is to be communicated by the first multimedia device, said requester for requesting with said control plane information generator allocation of the special channel upon which to communicate the real-time media;

a control plane information generator coupled to receive indications of the multimedia information, said control plane information generator for generating control plane information, the control plane information controlling a manner by which to provide the multimedia information, once converted into packet data form, to the second multimedia device; and

a format converter coupled to receive indications of the multimedia information in the radio-link format, said format converter for converting the multimedia information into the packet-data form, the multimedia information, once converted into the packet-data form provided to the second multimedia device in the manner determined by the control plane information.

10. The wireless gateway of claim 9 wherein said control plane information generator comprises a real-time manager, said real-time manager further for exchanging signaling with said requester pursuant to the requests for the allocation of the special channel.

11. The wireless gateway of claim 10 wherein the first multimedia device is defined in terms of logical layers, wherein said real-time media source is formed at a first logical layer and said requester is formed at a second logical layer, the first logical layer of a higher logical-layer level than the second logical layer.