초록 ▼

A scalable multi-level data bit stream is presented which is capable of supporting variable bandwidth ATM network access, including multiple rates for plural bearer channels of voice communications and increased rates for video and data (file transfer) communications. To support communications syste

A scalable multi-level data bit stream is presented which is capable of supporting variable bandwidth ATM network access, including multiple rates for plural bearer channels of voice communications and increased rates for video and data (file transfer) communications. To support communications system repairability, the bit stream includes an embedded operation channel for connection maintenance, performance monitoring, path tracing and testing. Furthermore, the bit stream includes framing data for performing add/drop multiplexing to control bandwidth use by identifying added and dropped bearer channels communicated within the bit stream. The interface with the ATM network is provided through an ATM adaptation layer that segments the bit stream into ATM cells and also assembles the bit from received ATM cells. Both wireless and wireline communications systems are supported with use of the bit stream to access the ATM network.

대표청구항 ▼

[What is claimed is:] [1.]a plurality of base stations effectuating radio frequency communications with subscriber mobile stations over a plurality of voice channels;a base station concentrator connected to the plurality of base stations;at least one first access node connected to the ATM transport

[What is claimed is:] [1.]a plurality of base stations effectuating radio frequency communications with subscriber mobile stations over a plurality of voice channels;a base station concentrator connected to the plurality of base stations;at least one first access node connected to the ATM transport network; anda communications link connecting the base station concentrator and the at least one first access node;a transport network management system connected to a certain access node of the ATM transport network;wherein the base station concentrator and each first access node include an interface for communicating voice information over the communications link using a communications bit stream that includes delimiting bits for specifying at the base station concentrator add/drop multiplexing of the plurality of voice channels;wherein the communications bit stream further includes an embedded operation channel carrying system operation and maintenance information for delivery to and from the transport network management system; andwherein the at least one first access node includes means for converting between the communications bit stream carried over the communications link and ATM cells carried over the ATM transport network.