[특허]Relocation of content sources during IP-level handoffs

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04Q-007/00
출원번호	UP-0144279 (2002-05-10)
등록번호	US-7525940 (2009-07-01)
발명자 / 주소	Trossen, Dirk Chaskar, Hemant M.
출원인 / 주소	Nokia Siemens Networks Oy
대리인 / 주소	Banner & Witcoff, Ltd.
인용정보	피인용 횟수 : 12 인용 특허 : 37

초록 ▼

The present invention provides a relocation of content sources that provide media content to a mobile terminal (mobile node) when a network layer-level handoff occurs. The relocation of content sources enables the mobile terminal to seamlessly execute an application that utilizes the media content f

The present invention provides a relocation of content sources that provide media content to a mobile terminal (mobile node) when a network layer-level handoff occurs. The relocation of content sources enables the mobile terminal to seamlessly execute an application that utilizes the media content from a current content source before the handoff and from a new content source after the handoff. The mobile terminal registers with a current access router in order to inform the access router about application context information. The current access router informs a new access router about the impending handoff. The new access router consequently discovers the new content source.

대표청구항 ▼

We claim: 1. An apparatus comprising: a mobile terminal communications interface; and a processor configured to communicate through the communications interface, the processor configured to perform: initiating an application supported by the apparatus receiving, from a current content source, a pac

We claim: 1. An apparatus comprising: a mobile terminal communications interface; and a processor configured to communicate through the communications interface, the processor configured to perform: initiating an application supported by the apparatus receiving, from a current content source, a packet data stream that is associated with the application; forwarding application context information that is associated with the application to an access router for registration thereon, the application context information including a content profile and a media description, the application context information configured to be used in establishing a connection with a new content source; and receiving the packet data stream from the new content source in response to the apparatus completing a network layer-level handoff. 2. The apparatus of claim 1, wherein the processor is further configured to perform: sending a first trigger that indicates to transfer the application context information; and sending a handoff trigger that causes the apparatus to be served by the new content source. 3. The apparatus of claim 1, wherein the media description comprises a pointer to a media content that is sent by the current content source and the new content source. 4. The apparatus of claim 1, wherein the processor is further configured to perform: receiving a modified media description; and processing the packet data stream in accordance with the modified media description. 5. The apparatus of claim 4, wherein the processor is further configured to perform: sending an acknowledgement in response to receiving the modified media description. 6. A method comprising: initiating an application with a mobile terminal; receiving from a current content source, a packet data stream that supports the application; forwarding application context information that is associated with the application to an access router for registration thereon, the application context information including a content profile and a media description, the application context information configured to be used in establishing a connection with a new content source; and receiving the packet data stream from the new content source in response to the mobile terminal completing a network layer-level handoff. 7. The method of claim 6, further comprising: sending a first trigger that indicates to transfer the application context information; and sending a handoff trigger that causes the mobile terminal to be served by the new content source. 8. The method of claim 6, further comprising: receiving a modified media description; and processing the packet data stream in accordance with the modified media description. 9. The method of claim 8, further comprising: sending an acknowledgement in response to receiving the modified media description. 10. An apparatus comprising: a mobile terminal communications interface; and a processor configured to communicate through the communications interface, the processor configured to perform: initiating an application supported by the apparatus; receiving, from a current content source, a packet data stream that is associated with the application; forwarding application context information that is associated with the application to an access router for registration thereon, the application context information including a content profile and a media description, the application context information configured to be used in establishing a connection with a new content source; sending a first trigger that indicates to transfer the application context information; sending a handoff trigger that causes the apparatus to be served by the new content source; and receiving the packet data stream from the new content source in response to the apparatus completing a network layer-level handoff.

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이 특허에 인용된 특허 (37) 인용/피인용 타임라인 분석

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