Patent application number | Description | Published |
20120114028 | COORDINATED MULTI-POINT TRANSMISSION USING INTERFERENCE FEEDBACK - Embodiments of methods and apparatus for wirelessly receiving, by a user equipment (UE), interference signal from a first enhanced Node B (eNB) while the UE is communicating with a second eNB; generating interference feedback information that is associated with an interference channel between the first eNB and the UE; and transmitting the interference feedback information to the first eNB via the second eNB are disclosed. Additional variants and embodiments are also disclosed. | 05-10-2012 |
20130163554 | DEVICE, SYSTEM AND METHOD OF MULTI-USER MULTI-INPUT-MULTI-OUTPUT WIRELESS COMMUNICATION - Device, system, and method of multi-user multi-input-multi-output (MIMO) wireless communication. In some embodiments, a wireless communication device ( | 06-27-2013 |
20130194943 | EVOLVED NODE B AND METHOD FOR COHERENT COORDINATED MULTIPOINT TRANSMISSION WITH PER CSI-RS FEEDBACK - An evolved Node B (eNB) and method for coherent coordinated multipoint transmission with per CSI-RS feedback are generally described herein. The eNB may configure a first cooperating point and a second cooperating point to jointly transmit a multi-node channel-state information (CSI) reference signal (RS) (CSI-RS) in predetermined resource elements of a resource block. The eNB may receive CSI reports as feedback from user equipment (UE). The CSI reports may include a precoding matrix indicator (PMI) indicating relative phase information between the cooperating points based on the multi-node CSI-RS. The CSI reports for the multi-node CSI-RS may be restricted to a PMI of rank-1. The eNB may configure the cooperating points for a coherent joint transmission to the UE based at least on the relative phase information. The coherent joint transmission may also be jointly beamformed based on single-node PMIs. | 08-01-2013 |
20130196699 | COORDINATED MULTIPOINT CONFIGURATION BASED ON CHANNEL STATE INFORMATION REFERENCE SIGNALS - Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for configuring coordinated multipoint (CoMP) for network devices. In various embodiments, configuration of the CoMP may be based on channel state information reference signals. Other embodiments may be described and/or claimed. | 08-01-2013 |
20130244709 | INTERFERENCE MITIGATION IN THE CONTEXT OF HETEROGENEOUS NETWORKS WITH COORDINATED TRANSMISSION POINTS WITH A COMMON TRANSMISSION POINT IDENTITY - Technology is discussed for extending frequency and time based approaches, such as Inter-Cell Interference Coordination (ICIC) and enhanced ICIC (eICIC), to interference mitigation for clusters within a Wireless Wide Area Network (WWAN) of transmission points with a common transmission point identity. Multiple transmission power messages correlated to different transmission point characteristics can be configured among multiple transmission points sharing the same transmission point identity. These multiple transmission power messages can be used to coordinate transmissions from adjacent transmission points on differing frequencies. Additionally, new sets of reference signals can be configured to correlate to different transmission point characteristics. These new, correlated reference signals can be used to decouple measurements used to provide feedback to one set of transmission points from reference signals transmitted by another set of transmission points with the same transmission point identity. | 09-19-2013 |
20130286867 | SIGNAL INTERFERENCE MEASUREMENTS IN A WIRELESS COMMUNICATION NETWORK - Embodiments of the present disclosure describe techniques and configurations for handling interference measurements in a wireless communication network. An apparatus may include computer-readable media having instructions and processors coupled with the computer-readable media and configured to execute the instructions to identify, for a serving eNB, a neighboring eNB for which signal interference measurements are to be performed by one or more wireless devices served by the serving eNB, and request that the neighboring eNB transmit typical interference signals within data units which are configured for, and may or may not have, a scheduled physical downlink shared channel transmission. The wireless devices may be configured to perform the signal interference measurements based at least in part on the typical interference signals, which may include non-zero-power signals or zero-power signals. Other embodiments may be described and claimed. | 10-31-2013 |
20130336224 | DISTRIBUTED ANTENNA SYSTEM AND METHOD FOR ENHANCED POSITIONING - Embodiments of a distributed antenna system (DAS) and method for enhanced positioning in a wireless network are generally described herein. In some embodiments, an enhanced Node-B (eNB) operates as part of a DAS that includes one or more nodes having the same cell ID as the eNB. The eNB is to transmit a UE-specific reference signal and configure one or more of the other nodes of the cell to transmit UE-specific reference signals that are distinguishable from each other and from the UE-specific reference signal that is transmitted by the eNB. The eNB may receive location estimate information from user equipment (UE) that is determined at least in part from the UE-specific reference signals. The eNB may also configure the nodes to perform cooperative OFDMA transmission techniques for the UEs operating in the cell. | 12-19-2013 |
20140003270 | SUPPORT FOR ASYNCHRONOUS TIME DIVISION DUPLEXING IN ADJACENT CELLS OF A WIRELESS COMMUNICATION SYSTEM | 01-02-2014 |
20140003312 | WAKE-UP FUNCTIONALITY FOR AN LTE ENODEB | 01-02-2014 |
20140036796 | REFERENCE SIGNAL CONFIGURATION FOR COORDINATED MULTIPOINT - Coordinated Multipoint (CoMP) involves multiple transmission points or cells coordinating their individual transmissions so that a target user equipment (LTE) experiences enhanced signal reception and/or reduced interference. In order to optimally implement downlink CoMP, a serving cell needs to obtain channel state information (CSI) for the downlink channels from the multiple transmission points to the UE. This disclosure deals with radio resource control (RRC) signaling for configuring the UE to obtain and report CSI for those downlink channels. | 02-06-2014 |
20140086221 | TIMING SYNCHRONIZATION FOR DOWNLINK (DL) TRANSMISSIONS IN COORDINATED MULTIPOINT (CoMP) SYSTEMS - Technology for adjusting a receiver timing of a wireless device in a Coordinated MultiPoint (CoMP) system is disclosed. One method can include the wireless device receiving a plurality of node specific reference signals (RSs) from a plurality of cooperating nodes in a coordination set of the CoMP system. The coordination set includes at least two cooperating nodes. The wireless device can estimate a composite received RS timing from a plurality of received RS timings generated from the plurality of node specific RSs. The received RS timings represent timings from the at least two cooperating nodes. The wireless device can adjust the receiver timing based on the composite received RS timing. A node specific RS can include a channel-state information reference signal (CSI-RS). | 03-27-2014 |
20140092878 | METHOD OF ENHANCED INTERFERENCE MEASUREMENTS FOR CHANNEL STATE INFORMATION (CSI) FEEDBACK - Embodiments of providing enhanced interference measurements for CSI feedback are generally described herein. In some embodiments, CSI-IM resources are used by UE to perform interference measurements. The serving cell determines a hopping pattern for varying a position of the determined CSI-IM resources in subframes transmitted to the served UE. The determined CSI-IM resources and the determined CSI-IM resources hopping pattern are transmitted to the served UE. The serving node transmits a zero-power (ZP) CSI-RS. The serving node receives an interference measurement from the served UE based on CSI-IM and ZP CSI-RS provided to the served UE from the serving cell. Collisions between the CSI-IM of the serving node and CSI-IM of the non-serving nodes are minimized by the determined CSI-IM resources hopping pattern. | 04-03-2014 |
20140185523 | ASSOCIATION BIASING FOR A HETEROGENEOUS NETWORK (HetNet) - A method for association biasing at a mobile device in a heterogeneous network (HetNet) is disclosed. The method can include the mobile device receiving coordination set information from a macro node in the HetNet. The coordination set information can include at least one low power node (LPN) identifier of at least one LPN. The mobile device can receive a request from the macro node to apply a specified reference signal (RS) biasing. The mobile device can apply the specified RS biasing to an LPN RS measurement derived from a LPN RS received from an LPN having an LPN identifier in the received coordination set information. The mobile device can associate the mobile device with the LPN when the LPN RS measurement with the specified RS biasing exceeds an association threshold. | 07-03-2014 |
20140219115 | SIGNALING FOR CONFIGURATION OF DOWNLINK COORDINATED MULTIPOINT COMMUNICATIONS - Embodiments of the present disclosure describe devices, methods, computer-readable media, and systems configurations for configuration of downlink coordinated multipoint (CoMP) communications in a wireless communication network. A user equipment (UE) may receive, from an evolved Node B (eNB), a radio resource control (RRC) transmission including channel state informations (CSI) reference signal (RS) parameters for a plurality of transmission points. The UE may subsequently receive a medium access control (MAC) control element (CE) including a plurality of index bits corresponding to one or more activated transmission points of the plurality of transmission points for which the feedback module is to generate CSI-RS feedback. The eNB may dynamically update the transmission points that are activated for CSI-RS feedback. The UE may receive another MAC CE from the eNB to notify the UE of the updated set of activated transmission points. | 08-07-2014 |
20140293890 | NETWORK ASSISTED INTERFERENCE CANCELLATION AND SUPPRESSION WITH RESPECT TO INTERFERING CONTROL CHANNEL TRANSMISSIONS - Embodiments of the present disclosure describe systems and methods for mitigating interference in wireless networks. Various embodiments may include signaling of control channel information associated with an interfering cell and utilization of the control channel information to mitigate interference. Other embodiments may be described and/or claimed. | 10-02-2014 |
20140301354 | VIRTUAL CARRIER SENSING MECHANISM FOR LONG TERM EVOLUTION (LTE) - Embodiments for providing virtual carrier sensing for LTE are generally described herein. In some embodiments, a first evolved Node B (eNB) sends a notification of subsequent DL transmission to a first UE in a downlink. In the uplink, the first UE sends a confirmation of the received DL notification. A second eNB overhears the confirmation, decodes it and extracts the information of the DL resources that the first eNB is planning to use. If the second eNB is not already transmitting in the indicated DL resources, the second eNB marks the indicated DL resources as busy and refrains from transmitting in those resources. The second eNB may then reschedule its transmission using alternative resources so that interference from the second eNB1 may be avoided. | 10-09-2014 |
20140362745 | CENTRAL PROCESSING UNIT AND METHODS FOR SUPPORTING COORDINATED MULTIPOINT TRANSMISSION IN AN LTE NETWORK - Embodiments of a central processing unit and methods for supporting coordinated multi-point (CoMP) transmissions in a 3GPP LTE network with non-ideal backhaul links are generally described herein. In some embodiments, the CPU may be arranged for scheduling and assigning resources for subordinate enhanced node Bs (eNBs) over the backhaul links for CoMP transmissions. The scheduling may include an additional number of HARQ processes to compensate, at least in part, for backhaul link latency. | 12-11-2014 |