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US 7,200,391 B2Granted
Capacity enhancement schemes for forward and reverse links of distributed cellular base stations
AssigneesAirvana, Inc., Solid Technologies, Inc.
InventorsSae-Young Chung, M. Vedat Eyuboglu, Yong Hoon Kang, Dae-Young Kim, Jin Hwa Ku, Seung Hee Lee, Michael D. Pollman
Life of this patent
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Abstract
Capacity enhancement schemes are described for forward and reverse links of distributed cellular base stations consisting of a central unit and one or more remote units. In general, in one aspect, reverse link capacity is shared among remote units. The capacity sharing can be determined dynamically. The forward link capacity can also be enhanced by estimating the location of the mobile stations.
Claims19
A distributed base station comprising:
- a central unit having one or more modems, each modem including one or more input ports;
- remote units, at least one of the remote units in communication with the central unit via a transmission medium, the remote units each having one or more RF elements, each RF element having one or more receive antennas;
- one or more combining modules configured to select one or more subsets of reverse link signals from the RF elements to be combined before each input port of the modem, wherein RF elements of at least two remote units share a reverse link capacity of at least one of the modems;
- and
- a gain compensation module configured to equalize link gains of signal paths associated with the selected subsets of reverse link signals prior to the selected subsets of reverse link signals being combined by the one or more combining modules.
2 more elements
Dependencies are inferred from the claim text.