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: Certain features relate to systems and methods for jointly optimizing a radio access network (RAN) and distributed antenna system (DAS). A joint RAN-DAS self-optimizing network (SON) entity can determine target parameters based on parameters specific to the DAS and parameters specific to the RAN. The joint RAN-DAS-SON entity can optimize the RAN and DAS using the target parameters. Jointly optimizing the RAN and the DAS can improve the capacity characteristics, coverage characteristics, or the performance characteristics of the RAN and DAS. In some aspects, the joint RAN-DAS-SON entity can optimize the RAN and DAS by re-allocating power levels of downlink signals transmitted by remote units of the DAS to compensate for underutilized carrier signals in situations of low traffic load.

Abstract: In one embodiment, a repeater for wireless communication is provided.

Abstract: Systems are provided for managing a small cell telecommunication system servicing multiple network operators. In one aspect, a small cell telecommunication system can include management sub-system including a controller, multiple baseband processing units in communication with the controller, a transport module, and multiple remote antenna units. The controller can communicate with multiple core networks. Each core network is operated by a separate network operator for providing telecommunication services to terminal devices. Each of the baseband processing units can process data plane data and control plane data from at least one respective core network. The transport module can communicate signals between the baseband processing units and the remote antenna units of the small cell network. The management sub-system can provide a respective amount of capacity via the small cell network for each core network based on a respective subset of the baseband processing units assigned to the core network.

Abstract: Certain features relate to systems and methods for optimizing the radio frequency characteristics of signals transmitted between a radio base station (RBS) and a distributed antenna system (DAS). A self-optimizing network (SON) entity can determine adjustments to radio frequency operations and management parameters at the RBS based on radio frequency parameters measured by a measurement and configuration module at the DAS. Adjustments to radio frequency operations and management parameters can include adjustments configured to compensate for signal latency caused by the DAS. Adjustments to radio frequency operations and management parameters can also include adjustments to signal gain due to noise rise caused by the DAS. The SON entity can also measure nominal receive power levels for the RBS for purposes of open loop power control.

Abstract: One embodiment is directed to a system that implements a downlink transmission mode that precodes sequences of symbols using a precoder matrix selected from a codebook. Linear transformations are performed on the sequences of precoded symbols using a distribution matrix. The distribution matrix is configured so that each of a plurality of precoder matrices provides perfect steering of transmit power to a corresponding one of a plurality of disjoint subsets of the antenna ports used for the downlink transmission mode. Also, the distribution matrix can be configured so that at least one precoder matrix provides peak power at all of the antenna ports used for the downlink transmission mode.

Abstract: Certain features relate to systems and methods for optimizing the radio frequency characteristics of signals transmitted between a radio base station (RBS) and a distributed antenna system (DAS). A self-optimizing network (SON) entity can determine adjustments to radio frequency operations and management parameters at the RBS based on radio frequency parameters measured by a measurement and configuration module at the DAS. Adjustments to radio frequency operations and management parameters can include adjustments configured to compensate for signal latency caused by the DAS. Adjustments to radio frequency operations and management parameters can also include adjustments to signal gain due to noise rise caused by the DAS. The SON entity can also measure nominal receive power levels for the RBS for purposes of open loop power control.

Abstract: Certain features relate to systems and methods for jointly optimizing a radio access network (RAN) and distributed antenna system (DAS). A joint RAN-DAS self-optimizing network (SON) entity can determine target parameters based on parameters specific to the DAS and parameters specific to the RAN. The joint RAN-DAS-SON entity can optimize the RAN and DAS using the target parameters. Jointly optimizing the RAN and the DAS can improve the capacity characteristics, coverage characteristics, or the performance characteristics of the RAN and DAS. In some aspects, the joint RAN-DAS-SON entity can optimize the RAN and DAS by re-allocating power levels of downlink signals transmitted by remote units of the DAS to compensate for underutilized carrier signals in situations of low traffic load.

Abstract: Systems are provided for managing a small cell telecommunication system servicing multiple network operators. In one aspect, a small cell telecommunication system can include management sub-system including a controller, multiple baseband processing units in communication with the controller, a transport module, and multiple remote antenna units. The controller can communicate with multiple core networks. Each core network is operated by a separate network operator for providing telecommunication services to terminal devices. Each of the baseband processing units can process data plane data and control plane data from at least one respective core network. The transport module can communicate signals between the baseband processing units and the remote antenna units of the small cell network. The management sub-system can provide a respective amount of capacity via the small cell network for each core network based on a respective subset of the baseband processing units assigned to the core network.

Abstract: A method and apparatus for determining placement of a plurality of simulated antennas of a simulated distributed antenna system (DAS) for handling simulated MIMO signals in a simulated environment includes: at a first simulated location, simulating communication of a first simulated MIMO signal by a first remote unit over a first simulated air interface; at a second simulated location, simulating communication of a second simulated MIMO signal by a second remote unit over a second simulated air interface; the first simulated location and the second simulated location arranged within the simulated environment to provide overlapping simulated signal coverage of both the first simulated MIMO signal and the second simulated MIMO signal at a third simulated location; and analyzing at least a first simulated received power of the first simulated MIMO signal and a second simulated received power of the second simulated MIMO signal at the third simulated location.

Abstract: A distributed antenna system (DAS) includes a master unit; a plurality of remote units communicatively coupled with the master unit and distributed to provide coverage within a service area, each of the remote units remotely located from the master unit and other remote units; a coupler element coupled to receive a plurality of MIMO signals, the MIMO signals including first and second MIMO signals, the coupler element configured to: introduce a phase shift in a first portion of the first MIMO signal to generate a first phase shifted portion of the first MIMO signal; combine the first phase shifted portion with a second portion of the second MIMO signal to generate a combined MIMO signal; and present the combined MIMO signal at a first output port of the coupler element; at least one antenna coupled with each remote unit and configured to receive the combined MIMO signal for transmission.

Abstract: In one embodiment, a repeater for wireless communication is provided.

Abstract: Certain features relate to systems and methods for jointly optimizing a radio access network (RAN) and distributed antenna system (DAS). A joint RAN-DAS self-optimizing network (SON) entity can determine target parameters based on parameters specific to the DAS and parameters specific to the RAN. The joint RAN-DAS-SON entity can optimize the RAN and DAS using the target parameters. Jointly optimizing the RAN and the DAS can improve the capacity characteristics, coverage characteristics, or the performance characteristics of the RAN and DAS. In some aspects, the joint RAN-DAS-SON entity can optimize the RAN and DAS by re-allocating power levels of downlink signals transmitted by remote units of the DAS to compensate for underutilized carrier signals in situations of low traffic load.

Abstract: A distributed antenna system includes a multiple-input and multiple-output (MIMO) base station configured to output at least a first signal and a second signal. At least one master unit communicates with the MIMO base station. At least one remote unit communicates with the master unit. At least one antenna is coupled with the remote unit for receiving signals from the remote unit. A coupler element is configured for introducing a phase shift in a portion of at least the first MIMO signal and for combining the phase shifted first MIMO signal portion with a portion of the second MIMO signal and presenting the combined first and second MIMO signal portions at an output port of the coupler element. An antenna is configured for receiving the combined MIMO signal portions for transmission.

Abstract: A method and apparatus for determining placement of a plurality of antennas of a distributed antenna system for handling MIMO signals includes, at a first location, simulating the communication of a first MIMO signal by a first remote unit over an air interface in an environment and, at a second location, simulating the communication of a second MIMO signal by a second remote unit over an air interface in the environment. The first and second locations are arranged within the environment to provide overlapping signal coverage of both the first MIMO signal and the second MIMO signal at a third location in the environment. Analysis is made of at least an imbalance of received power between the first and second MIMO signals within the environment at a third location in order to determine whether a desired capacity for MIMO communications with the system has been achieved at the third location.

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: Communication network (100) for wireless communication, comprising a base station (1, 16, 26), a wireless terminal (3, 15, 18, 25, 37) and at least one repeater (5, 10, 20, 28, 33) which is connected between the base station (1, 16, 26) and the wireless terminal (3, 15, 18, 25, 37), the base station (1, 16, 26) being configured for transmitting and receiving a communication signal on multiple information channels, the terminal (3, 15, 18, 25, 37) being configured for transmitting and receiving a communication signal on multiple information channels, and the repeater (5, 10, 20, 28, 33) being configured for receiving, passing through and retransmitting communication signals on multiple information channels, and contains a converting device (101, 103, 106, 110, 118) for frequency conversion of at least one information channel passed through, a test receiver (6, 12, 22, 34, 38) being additionally comprised which is configured for determining unused frequency ranges for wireless communication, the test receiver (

Abstract: Certain features relate to systems and methods for jointly optimizing a radio access network (RAN) and distributed antenna system (DAS). A joint RAN-DAS self-optimizing network (SON) entity can determine target parameters based on parameters specific to the DAS and parameters specific to the RAN. The joint RAN-DAS-SON entity can optimize the RAN and DAS using the target parameters. Jointly optimizing the RAN and the DAS can improve the capacity characteristics, coverage characteristics, or the performance characteristics of the RAN and DAS. In some aspects, the joint RAN-DAS-SON entity can optimize the RAN and DAS by re-allocating power levels of downlink signals transmitted by remote units of the DAS to compensate for underutilized carrier signals in situations of low traffic load.

Abstract: Certain features relate to optimizing network resources in a distributed antenna system to minimize signal interference between remote units in the distributed antenna system. A remote unit is configured to measure an isolation level with another remote unit. Based on the measured isolation level, a self-optimizing network entity can instruct base transceiver stations to partition network resources such that remote units with isolation levels lower than an isolation threshold value radiate signals using different network resources. Remote units that have isolation levels higher than an isolation threshold value can radiate signals using the same network resources. By repeating the process across multiple remote units across multiple cell-sites, signal interference between adjacent remote units in the distributed antenna system can be minimized.

Abstract: Certain features relate to systems and methods for optimizing the radio frequency characteristics of signals transmitted between a radio base station (RBS) and a distributed antenna system (DAS). A self-optimizing network (SON) entity can determine adjustments to radio frequency operations and management parameters at the RBS based on radio frequency parameters measured by a measurement and configuration module at the DAS. Adjustments to radio frequency operations and management parameters can include adjustments configured to compensate for signal latency caused by the DAS. Adjustments to radio frequency operations and management parameters can also include adjustments to signal gain due to noise rise caused by the DAS. The SON entity can also measure nominal receive power levels for the RBS for purposes of open loop power control.