초록 ▼

In LMDS systems the downlink bandwidth is continuously varying in time because each downlink burst uses a network termination individual modulation and coding (Physical layer) scheme, the higher layer (IP) functions cannot perform service priority respecting traffic shaping. The invention proposes

In LMDS systems the downlink bandwidth is continuously varying in time because each downlink burst uses a network termination individual modulation and coding (Physical layer) scheme, the higher layer (IP) functions cannot perform service priority respecting traffic shaping. The invention proposes mainly to combine both framing and IP layer functions within one inter-layer framer. The combination of both information ensures QoS provisioning in case of multi-modulation and multi-coding environment. The QoS queue server gets always informed on the actual amount of available data frame bits from the downlink framer and therefore, the QoS queue server is able to decide on the next IP packet or packet fraction to transport. This decision is always based on service priority aspects. As soon as the downlink frame is filled--supposing that the maximum downlink frame rate is always lower than the internal processing in the inter-layer framer--the QoS server stops the data delivery.

대표청구항 ▼

The invention claimed is: 1. Base station for a point-to-multipoint radio network, in particular LMDS, including an inter-layer framer, the inter-layer framer including a series connection of a queuing module and a downlink framer, the downlink framer having a feedback loop to the queuing module to

The invention claimed is: 1. Base station for a point-to-multipoint radio network, in particular LMDS, including an inter-layer framer, the inter-layer framer including a series connection of a queuing module and a downlink framer, the downlink framer having a feedback loop to the queuing module to stepwise transmit the actual number of unused symbols in the next frame to be transmitted via the downlink, and the queuing module being capable to stepwise decide which information packet to be forwarded to the downlink framer in order to include the information packet into the next frame, the decision being dependent on the actual number of unused symbols received by the downlink framer. 2. Base station according to claim 1, wherein the queuing module includes at least two queues to intermediately store different prioritized quality of services parameters, and the queuing module being capable to decide which information packet to be forwarded to the downlink framer in order to include the information packet into the next frame, the decision being dependent on the actual number of unused symbols received by the downlink framer, the priority of the quality of services parameters, and the length of the corresponding intermediately stored information packets to be forwarded. 3. Base station according to claim 1, wherein the queuing module includes a processor and at least two queues to intermediately store different quality of services parameters. 4. Base station according to claim 1, wherein the information packets are QPSK and/or QAM modulated data packets and/or QPSK and/or QAM modulated IP packets.