Telefonaktiebolaget Lm Ericsson (publ)

Bo Jerker Karlander

David Comstock

Harri Tapani Vilander

Hans A Berghager

Mikael Agnevik

Per E Sydhoff

Per Wollbrand

Kenneth Browall

Krister Samuelson

Peter C Lund

A telecommunications system has a protocol architecture over an interface between nodes of the telecommunications system, the protocol architecture including Internet Protocol as a protocol above a link layer protocol in a transport network layer. The protocol architecture can be used over one or more of several interfaces, including the interface between a radio access network and a core network [Iu Interface]; the interface between radio network controllers (RNCs) and the base stations (BSs) served thereby [Iub Interface]; and the interface between a Source RNC (SRNC) and a Drift RNC (DRNC) [Iur Interface]. A new XTP Protocol is proposed as another aspect of the invention, which is usable in a protocol stack for the Iu-PS (packet switched) implementation as well as over the Iu-CS, Iub, and Iur Interfaces.

Using internet protocol (IP) in radio access network

An AAL2 path group () comprises plural AAL2 paths (). Bandwidth of an individual AAL2 path comprising the AAL2 path group is contributed to a total bandwidth of the AAL2 path group rather than to the individual AAL2 path exclusively. An admission decision regarding a connection seeking to use an AAL2 path belonging to the AAL2 path group is based on available bandwidth of the AAL2 path group rather than available bandwidth of an individual AAL2 path. ATM VCCs which comprise the AAL2 path group are transported on a virtual path (VP) together with ATM VCCs of a different type (e.g., a second type which differs from a first type of ATM VCC which comprise the AAL2 path group). The AAL2 path group also features quality of service (QoS) separation, e.g., differing treatment for differing AAL2 connections within the AAL2 path group based on the QoS requirements for the differing AAL2 connections.

Bandwidth efficient Quality of Service separation of AAL2 traffic

The present invention provides interconnection links between modules in a switch node. A redundant physical link couples the modules and a dual state data packet routing tag is used to identify which link is active. A standard tag received from an application device is converted to the dual state data packet routing tag, after the data leaves the application device so the interconnection link routing is essentially invisible to the application layer.

Interconnection link redundancy in a modular switch node

The present invention relates to a telecommunications system, nodes, device boards and methods in such telecommunications systems, where a node comprises a first device board, which includes a receiving section ( ) having at least one input port ( ), to which an input buffer ( ) is connected for receiving TDM-channels in TDM-frames, and having at least one transmitting buffer ( ). A second device board includes a transmitting section ( ) having a receiving buffer ( ) for every other device board, at least one output port ( ) and at least one output buffer ( ) for every output port. All TDM-channels received in input buffers intended for the transmitting section are copied to a corresponding transmitting buffer and the content of the transmitting buffer reaches the transmitting section through sending of at least one transport module solely containing all TDM-channels intended for said second device board. The transport module is received in a corresponding receiving buffer in the transmitting section and all TDM-channels in all receiving buffers to be sent in a frame via an output port are copied to the output buffer corresponding to said port.

Growing community of inventors

Sollentuna, Sweden

Bo Jerker Karlander