Patent ID: 9036475
Filing Date: 2015-05-19
Classification: H04W

Abstract:
1. A method for use in a distributed radio base station, comprising a plurality of radio equipment nodes and an associated radio equipment control node, for exchanging user data between said radio equipment control node and said plurality of radio equipment node for transceiving information over a radio interface in a cell using multiple antenna elements, the radio equipment control node being separate from and coupled to said plurality of radio equipment nodes by a transmission link (CPRI), said method comprising: said transmission link (CPRI) comprising a CPRI interface with a total available bit rate, and said user data comprising In-phase and Quadrature (IQ) complex data samples; configuring at least one of said radio equipment nodes with a initial signal path configuration, said signal path configuration defining a combination of at least one of a set of available signal paths to be mapped onto said multiple antenna elements together with a bandwidth capability for said at least one radio equipment node; monitoring a traffic demand of a respective cell of each of said plurality of radio equipment nodes; determining an alternative signal path configuration for said at least one radio equipment node based on at least said monitored demand, said alternative signal path configuration defining a different combination of at least one of a said set of available signal paths to be mapped onto one of said multiple antenna elements together with a bandwidth capability for said at least one radio equipment node; dynamically switching from said initial signal path configuration to said determined alternative signal path configuration; exchanging said IQ data samples between said radio equipment control node and said at least one radio equipment node by inserting or extracting said IQ data samples to or from said CPRI interface based on said determined alternative signal path configuration.