Abstract: One embodiment is directed to a system for providing wireless service to user equipment (UE). The system comprises an intermediate device configured to communicate with a baseband unit (BBU) of a radio access network (RAN) and a plurality of remote units (RUs) communicatively coupled to the intermediate device. The intermediate device is configured to acquire synchronization for the RAN and to distribute synchronization information to the plurality of RUs. At least two of the RUs are configured to wirelessly transmit user data to a same UE. Said at least two of the RUs are configured to perform at least some physical layer processing for wirelessly transmitting the user data to the same UE.

Abstract: One embodiment is directed to a device for fronthaul communication between a baseband unit (BBU) and a remote unit (RU). A processor of the device is configured to receive, using a first fronthaul interface of the device, fronthaul data originating from said first one of the BBU and the RU. The fronthaul data is formatted according to a first fronthaul protocol when received using the first fronthaul interface. The processor is further configured to format at least some of the fronthaul data received using the first fronthaul interface so as to be formatted according to a second fronthaul protocol thereby producing reformatted fronthaul data and forward, using a second fronthaul interface of the device, the reformatted fronthaul data towards said second one of the BBU and the RU.

Abstract: A distributed radio frequency communication system includes a remote radio unit (RRU and a baseband unit (BBU) and facilitates communication between a wireless terminal and a core network. The RRU receives a radio frequency signal from a wireless terminal and convert the radio frequency signal to digital baseband samples using receiver circuitry and an analog-to-digital converter. The RRU then adaptively compresses the digital baseband samples, using adaptive compression circuitry, to create fronthaul uplink information, and sends the fronthaul uplink information over a fronthaul link to the BBU using an adaptive fronthaul protocol. The RRU also receives fronthaul downlink information over a fronthaul link from the BBU using an adaptive fronthaul protocol and generates frequency-domain samples, based on the fronthaul downlink information received.

Abstract: Methods and systems directed to facilitating wireless communication with a wireless terminal are disclosed. A baseband unit (BBU) is configured to perform a first portion of a physical-layer (PHY) protocol of a radio access network (RAN). A remote radio unit (RRU) is configured to perform a remaining portion of the PHY protocol. The RRU is communicatively coupled to the BBU over a non-deterministic communication link. An entity other than the RRU is also used. The system is configured to determine a communication quality parameter and to send a message related to the communication quality parameter to said entity.

Abstract: One embodiment is directed to a system comprising a baseband unit (BBU), a cluster of remote radio units (RRUs), and an orchestration module. The cluster of RRUs and BBU communicate with each other over a fronthaul link using an adaptive protocol. The cluster of RRUs is configured to appear as a single base station to a plurality of mobile terminals in connection with providing wireless service to the plurality of mobile terminals. The orchestration module is configured to configure the cluster of RRUs so that a first RRU of the cluster of RRUs transmits first data to a first mobile terminal included in the plurality of mobile terminals and a second RRU of the cluster of RRUs transmits second data to a second mobile terminal included in the plurality of mobile terminals during a same time period using a same frequency.

Abstract: A distributed radio frequency communication system includes a remote radio unit (RRU and a baseband unit (BBU) and facilitates communication between a wireless terminal and a core network. The RRU receives a radio frequency signal from a wireless terminal and convert the radio frequency signal to digital baseband samples using receiver circuitry and an analog-to-digital converter. The RRU then adaptively compresses the digital baseband samples, using adaptive compression circuitry, to create fronthaul uplink information, and sends the fronthaul uplink information over a fronthaul link to the BBU using an adaptive fronthaul protocol. The RRU also receives fronthaul downlink information over a fronthaul link from the BBU using an adaptive fronthaul protocol and generates frequency-domain samples, based on the fronthaul downlink information received.

Abstract: Methods and systems for facilitating communication between a core network and a wireless terminal in an upper first-level protocol unit (UL1) of a radio access network (RAN) as disclosed. An upper first level protocol unit (UL1) performs a first portion of a first-level protocol of the RAN in a first apparatus and communicates over a fronthaul link with a lower first-level protocol unit (LL1). The LL1 is in a second apparatus separate from the first apparatus. A communication quality parameter for communication between the first apparatus and the LL1 is determined, and a message related to the communication quality parameter is sent by the UL1 to an entity of the RAN other than the LL1.

Abstract: A distributed radio frequency communication system facilitates communication between wireless terminals and a core network. The system includes a group of remote radio units (RRUs). Each RRU of the group of RRUs is coupled to an antenna to communicate with at least some of the mobile terminals and includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) and communicate over a fronthaul link. The system also includes a baseband unit (BBU) coupled to the core network and the fronthaul link, and communicably coupled to the group of RRUs over the fronthaul link. The RRU receives a synchronization-assisting radio-frequency signal and sends information derived from that signal to the BBU. The BBU processes the information to determine synchronization instructions which are then used to adjust a local clock in the RRU.

Abstract: A distributed radio frequency communication system facilitates communication between wireless terminals and a core network. The system includes a group of remote radio units (RRUs). Each RRU of the group of RRUs is coupled to an antenna to communicate with at least some of the mobile terminals and includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) and communicate over a fronthaul link. The system also includes a baseband unit (BBU) coupled to the core network and the fronthaul link, and communicably coupled to the group of RRUs over the fronthaul link. The BBU includes electronic circuitry to assign one or more RRUs, selected from the group of RRUs, to a cluster of RRUs based on one or more parameters, and to perform at least a second-level protocol of the RAN.

Abstract: One embodiment is directed to a device for fronthaul communication between a baseband unit (BBU) and a remote unit (RU). A processor of the device is configured to receive, using a first fronthaul interface of the device, fronthaul data originating from said first one of the BBU and the RU. The fronthaul data is formatted according to a first fronthaul protocol when received using the first fronthaul interface. The processor is further configured to format at least some of the fronthaul data received using the first fronthaul interface so as to be formatted according to a second fronthaul protocol thereby producing reformatted fronthaul data and forward, using a second fronthaul interface of the device, the reformatted fronthaul data towards said second one of the BBU and the RU.

Abstract: Certain aspects of the present disclosure provide various mechanisms that allow a user equipment to convey information regarding one or more attributes to a base station during a random access (RA) procedure. The attributes may include, for example a capability of the UE (e.g., to support a particular feature or version of a standard) or a condition of the UE (e.g., if it is currently experiencing an interference condition).

Abstract: A method for providing multi-hypothesis channel quality indicator (MH-CQI) feedback is described. Hypotheses corresponding to rank indicator (RI) and precoding matrix indicator (PMI) assumptions associated with a dominant interferer are selected. Multi-hypothesis channel quality indicator (MH-CQI) values based on the selected hypotheses are generated. The multi-hypothesis channel quality indicator (MH-CQI) values are encoded. The multi-hypothesis channel quality indicator (MH-CQI) values are sent as feedback.

Abstract: A distributed radio frequency communication system includes a remote radio unit (RRU and a baseband unit (BBU) and facilitates communication between a wireless terminal and a core network. The RRU receives a radio frequency signal from a wireless terminal and convert the radio frequency signal to digital baseband samples using receiver circuitry and an analog-to-digital converter. The RRU then adaptively compresses the digital baseband samples, using adaptive compression circuitry, to create fronthaul uplink information, and sends the fronthaul uplink information over a fronthaul link to the BBU using an adaptive fronthaul protocol. The RRU also receives fronthaul downlink information over a fronthaul link from the BBU using an adaptive fronthaul protocol and generates frequency-domain samples, based on the fronthaul downlink information received.

Abstract: A distributed radio frequency communication system facilitates communication between a wireless terminal and a core network. The system includes a remote radio unit (RRU) coupled to at least one antenna to communicate with the wireless terminal. The RRU includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) for communicating between the wireless terminal and the core network. The system also includes a baseband unit (BBU) coupled to the core network, and configured to perform at least a second-level protocol of the RAN. A fronthaul link is coupled to the BBU and the RRU. The fronthaul link utilizes an adaptive fronthaul protocol for communication between the BBU and the RRU. The adaptive fronthaul protocol has provisions for adapting to conditions of the fronthaul link and radio network by changing the way data is communicated over the fronthaul link.

Abstract: A distributed radio frequency communication system facilitates communication between wireless terminals and a core network. The system includes a group of remote radio units (RRUs). Each RRU of the group of RRUs is coupled to an antenna to communicate with at least some of the mobile terminals and includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) and communicate over a fronthaul link. The system also includes a baseband unit (BBU) coupled to the core network and the fronthaul link, and communicably coupled to the group of RRUs over the fronthaul link. The BBU includes electronic circuitry to assign one or more RRUs, selected from the group of RRUs, to a cluster of RRUs based on one or more parameters, and to perform at least a second-level protocol of the RAN.

Abstract: A distributed radio frequency communication system facilitates communication between a wireless terminal and a core network. The system includes a remote radio unit (RRU) coupled to at least one antenna to communicate with the wireless terminal. The RRU includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) for communicating between the wireless terminal and the core network. The system also includes a baseband unit (BBU) coupled to the core network, and configured to perform at least a second-level protocol of the RAN. A fronthaul link is coupled to the BBU and the RRU. The fronthaul link utilizes an adaptive fronthaul protocol for communication between the BBU and the RRU. The adaptive fronthaul protocol has provisions for adapting to conditions of the fronthaul link and radio network by changing the way data is communicated over the fronthaul link.

Abstract: A distributed radio frequency communication system facilitates communication between wireless terminals and a core network. The system includes a group of remote radio units (RRUs). Each RRU of the group of RRUs is coupled to an antenna to communicate with at least some of the mobile terminals and includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) and communicate over a fronthaul link. The system also includes a baseband unit (BBU) coupled to the core network and the fronthaul link, and communicably coupled to the group of RRUs over the fronthaul link. The BBU includes electronic circuitry to assign one or more RRUs, selected from the group of RRUs, to a cluster of RRUs based on one or more parameters, and to perform at least a second-level protocol of the RAN.

Abstract: Improvements to signaling procedures for use in physical random access channel (PRACH)-based proximity detection are disclosed. Signaling and signaling processes from a serving base station may trigger a more efficient and reliable transmission of PRACH from related user equipment (UE). At the dynamic power nodes (DPNs) monitoring for such PRACH-based proximity, features are disclosed which establish neighbor lists for more efficient management of detection and proximity activation.

Abstract: A distributed radio frequency communication system facilitates communication between a wireless terminal and a core network. The system includes a remote radio unit (RRU) coupled to at least one antenna to communicate with the wireless terminal. The RRU includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) for communicating between the wireless terminal and the core network. The system also includes a baseband unit (BBU) coupled to the core network, and configured to perform at least a second-level protocol of the RAN. A fronthaul link is coupled to the BBU and the RRU. The fronthaul link utilizes an adaptive fronthaul protocol for communication between the BBU and the RRU. The adaptive fronthaul protocol has provisions for adapting to conditions of the fronthaul link and radio network by changing the way data is communicated over the fronthaul link.

Abstract: Methods and systems for facilitating communication between a core network and a wireless terminal in an upper first-level protocol unit (UL1) of a radio access network (RAN) as disclosed. An upper first level protocol unit (UL1) performs a first portion of a first-level protocol of the RAN in a first apparatus and communicates over a fronthaul link with a lower first-level protocol unit (LL1). The LL1 is in a second apparatus separate from the first apparatus. A communication quality parameter for communication between the first apparatus and the LL1 is determined, and a message related to the communication quality parameter is sent by the UL1 to an entity of the RAN other than the LL1.