Abstract:
Embodiments disclosed in the detailed description include supporting an add-on remote unit(s) (RU) in an optical fiber-based distributed antenna system (DAS) over existing optical fiber communication medium using wavelength division multiplexing (WDM). An existing DAS comprises at least one existing head end equipment (HBE) communicatively coupled to a plurality of existing RUs through an optical fiber communication medium, in aspects disclosed herein, an add-on RU is added to the existing DAS to support additional wireless communications. No new optical fibers are required to be deployed to support communications to the add-on RU in the DAS. Instead, the DAS is configured to support the add-on RU through the existing optical fiber communication medium using WDM, Thus, the add-on RU can be added to the existing DAS without adding new optical fibers, thus leading to reduced service disruptions and deployment costs.
Abstract:
The present disclosure teaches a method and a system (10; 510; 710) for relaying telecommunication signals (S1, 52), wherein the telecommunication signals (S1, S2) have a plurality of carriers (401, 402). The system (10; 510; 710) comprises a central hub (20; 520; 720) connectable to one or more base stations (5, 6; 505, 506); a plurality of remote units (80-1,.., 80-N; 580-1,...,580-7; 780-1,...,780-9) for relaying at least one of the plurality of carriers (401, 402) in the telecommunication signals (S1, S2) supplied by the central hub (20; 520; 720). Power of the plurality of remote units (80-1,.., 80-N; 580-1,...,580-7; 780-1,...,780-9) is adjustable such that first ones of the plurality of remote units (80-1,.., 80-N; 580-1,...,580-7; 780-1,...,780-9) can be switched off and second ones of the plurality remote units (80-1,.., 80-N; 580-1,...,580-7; 780-1,...,780-9) can have adjusted power levels to compensate for the switch off of the first ones of the plurality of remote units (80-1,.., 80-N; 580-1,...,580-7; 780-1,..., 780-9).
Abstract:
System and apparatus embodiments are provided for high capacity wireless communication. In an embodiment, a system for high capacity wireless communication includes a plurality of small radio unit modules (SRUMs) and a single central module (CM) configured to connect to the SRUMS over a high speed transport layer (TL), wherein the SRUMs each comprise a SRUM radio frequency (RF) element and an antenna, wherein the CM comprises a digital signal processor (DSP), an analog-to-digital (A/D) converter, a plurality of digital-to-analog (D/A) converters, and a plurality of CM RF elements, wherein each of the plurality of SRUMs is uniquely associated with a CM RF element, and a D/A converter thereby forming a radio unit (RU) that is configured to operate independently of other RUs.
Abstract:
A method is proposed of arranging, in a mobile communication network (100), transmission of data between user equipments (UE i ) and at least one base station (BS) comprising a central unit (CU,CU') and at least one remote unit (RU j ,RU' j ) associated therewith. The method comprises: at a transmitting side comprising the remote unit (RU j ,RU' j ) or the central unit (CU,CU'), quantizing (225) said data according to a quantization bits number (Q j ), and transmitting, over a fronthaul link (F L ) between the transmitting side and a receiving side comprising the central unit (CU,CU') or the remote unit (RU j ,RU' j ), respectively, the quantized data to the receiving side. The method further comprises, at the central unit (CU,CU'): determining (260) said quantization bits number (Q j ), wherein said determining comprises varying in time the quantization bits number (Q j ) according to network information (I A j ,I B ) available at the central unit (CU,CU'), and communicating to the at least one remote unit (RU j ,RU' j ) the determined quantization bits number (Q j ).
Abstract:
Certain features relate to systems and methods for planning and optimizing a distributed antenna system ("DAS") based on measurements taken from the radio environment surrounding the DAS. An operation and management system can determine a mapping of external cells based on measurements of downlink signals taken by a measurement subsystem. The operation and management system can determine a mapping of internal cells as well as a neighboring cell relation table. The DAS element management system or network operator can configure the DAS based on the mapping of external cells, mapping of internal cells, and the cell relation table. Additionally, based on neighboring cell signal power measurements taken by user devices, the a common interface between the DAS and the radio access network can determine a radio environment map estimating positions of the user devices connected to the DAS.
Abstract:
A system includes: hub configured to receive respective signal from one or more network devices, wherein hub is configured to convert combined signal containing respective signal from each network device into digital radio frequency (RF) signal; remote unit coupled to hub over first optical fiber communication medium to receive from hub optical signal representing digital RF signal, wherein remote unit is configured to recover digital RF signal from optical signal and to convert digital RF signal to analog RF signal; antenna unit coupled to remote unit over second optical fiber communication medium to receive from remote unit second optical signal representing at least portion of analog RF signal, wherein antenna unit is not co-located with remote unit; and antenna coupled to and co-located with antenna unit, wherein antenna is configured to radiate signal from frequency band in analog RF signal recovered by antenna unit from second optical signal.
Abstract:
Multiple application modules (MAMs) for monitoring of signals in components in wireless distribution systems (WDSs), including but not limited to distributed antenna systems (DASs) are disclosed. The MAMs are wireless telecommunication circuitry associated with wireless distribution components in a WDS, such as communications and power components as examples. By associating MAMs into components of a WDS, live signals in the WDS can be monitored and measured for monitoring the performance of components within the WDS. The MAMs include a multiple application software platform architecture that includes one or more application layer applications configured to receive and monitor signals in the WDS, and to provide application level information about such monitored signals to other systems or technicians. The application level information can be used by a technician or other system to diagnose or calibrate the WDS and/or the communications components provided therein.
Abstract:
Techniques are disclosed relating to a massive MIMO base station architecture. In some embodiments, a base station is configured to combine signals received by multiple antennas and, for at least a subset of processing elements included in the base station, each processing element is configured to operate on a different portion of the combined signals. In these embodiments, each portion includes signals from multiple antennas. In some embodiments, the portions are different time and/or frequency portions of the combined signals. In some embodiments, this distributed processing may allow the number of antennas of the base station to scale dramatically, provide dynamic re-configurability, facilitate real-time reciprocity-based precoding, etc.