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

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 nepsilon[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 one LCH packet. The SCH packets, which likewise need to be buffer-stored, are entered in the unused part of such a section for an LCH packet. This considerably reduces the complexity for memory organization without having to leave a major proportion of the memory unused.

Description

Technical field [0001] The present invention relates to the technical field of buffer storage for memory management through data transmission between connected devices. Background technique [0002] In recent years, great progress has been made in the network interconnection of household devices, such as entertainment electronic devices or other household devices. In this case, not only the use of wires, that is, the corresponding cable connection between devices, such as the IEEE1394 bus system for network interconnection of devices, has been used, but also, in addition, network devices that do not use wires have been used. Greater effort. At the same time, various systems have been developed here. At this point, the so-called Hiperlan Type 2 system should be mentioned in particular. For example, in the home environment, the Hiperlan / 2 system allows network interconnection of devices. Multiple channels with a bandwidth of approximately 20 MHz (megahertz) can be used in the 5 GHz...

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Problems solved by technology

Therefore, the complexity of calculating the starting addresses of these data blocks is increased, since these data blocks have data such as 2 6 = 64 byte size data block instead of having 2 n byte-sized data block

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