System for connecting radio access nodes of a radio access network

摘要

The system comprises a plurality of radio access nodes, or cells, each of said cells providing a coverage area to a plurality of user equipments, characterized in that each of said radio access nodes is splitted into:
a common processing section (1) which performs a main processing stage; anda plurality of remote transceiving sections (2a, 2b, 2c), each performing a local processing stage complementing said main processing stage, being operatively connected to said common processing section, and constituting a sub-cell providing a coverage sub-area, wherein said coverage area is distributed into said coverage sub-areas.;The method is arranged for carrying out said splitting of radio access nodes.

主权项

1. A system for connecting radio access nodes of a radio access network, said radio access network comprising a plurality of radio access nodes, or cells, each of said cells providing a coverage area to a plurality of user equipments, each of said radio access nodes is split into:
a common processing section configured to perform a main processing stage; and a plurality of remote transceiving sections, each configured to perform a local processing stage complementing said main processing stage, being operatively connected to said common processing section, wherein each remote transceiving section of said plurality of remote transceiving sections is configured to provide radio coverage in a sub-area of said coverage area, and constitutes a sub-cell of said cell, wherein said coverage area is distributed into said coverage sub-areas, wherein said common processing section is configured to perform data processing functionalities between a radio resource control layer and a modulation mapper of a physical layer, said common processing section comprising the following processing blocks in a communication direction between the common processing section and the remote transceiving section: a code block segmentation, a channel coding, a rate matching, a code block concatenation, a circular buffer, a scrambling and a pre-modulation mapper; wherein said pre-modulation mapper block is configured to add the following information to a data stream:
a type of modulation to be applied in said remote transceiving section; anda number of radio resources reserved to a user equipment; wherein said radio resources are resources blocks, and said pre-modulation mapper block is further configured to add an initial resource block where data will be mapped at said remote transceiving section to data stream, so that an output constitutes a lower data rate than an output of a common complex-modulated modulator; and wherein said plurality of remote transceiving sections include the following blocks in the communication direction between the remote transceiving section and the common processing section: a quadrature (IQ) demodulation, a downconversion, an analog to digital conversion, a cyclic prefix removal, a Fast Fourier Transform (FFT) and Inverse Fast Fourier Transform (IFFT) processing, a resource element demapper and a demodulation demapper.