Method and apparatus for buffer storage of data packets which are to be transmitted via a connection that has been set up

US7379442B2 · kind B2 · utility

Assignee

• Thomson Licensing · FR

Inventors

• Malte Borsum · Hannover, DE
• Klaus Gaedke · Hannover, DE
• Thomas Brune · Hannover, DE

Key dates

• Filing date: Sep 19, 2002
• Grant date: May 27, 2008
• Expiry date: Aug 22, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L49/9036
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

So-called LCH packets are defined in the Hiperlan Type 2 System for wire-free transmission of video and audio data streams. These LCH packets have a length of 54 data bytes. Furthermore, the Hiperlan/2 Standard provides for so-called ARQ messages to be sent back to the transmitter in an SCH packet in a QOS mode (Quality Of Service), in which all the LCH data packets must be confirmed by the receiver. Space for the LCH and SCH data packets must be provided in a buffer store in the Hiperlan/2 interface for each connection that is set up. When there is a possibility of several hundred connections having been set up, separate reservation of memory areas for LCH and SCH packets would involve considerable complexity for the memory organization. The invention proposes that only one common area be reserved for LCH and SCH packets in the buffer store. The section which is provided for each LCH package is of such a size that it corresponds to a value 2n where nε[0, 1, 2, 3, . . . ], and this results in the hardware unit for the address calculation of these data section starts being greatly simplified. However, the area is chosen to be larger than actually required for the buffer storage of o…