Abstract: An information recording medium in which bottoms of a guide groove and a pit array formed on a disc substrate are allocated on a same flat plane and shaped in flat. Further, in a transition area from a pit array to a guide groove or from a guide groove to a pit array, the information recording medium is provided with an intermediate area composed of a pit array of which height changes from a height between a bottom and a side of a groove to another height between the bottom and a side of the pit array.

Abstract: A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame.

Abstract: A method is provided for communication in a wireless telecommunication system. The method comprises multiplexing, by a network element, at least one symbol of a PHICH onto at least one resource element of a PCFICH.

Abstract: A label switched path through a network of nodes, is torn down by sending a message along the path from an ingress node. If there is a fault along the path, a path error message (2) is sent back along the path to the ingress node. The ingress node uses a different route bypassing the fault to alert (3) a further one of the nodes (NE5, NE6) on that path beyond the indicated fault, to cause that further node to continue the tearing down for other nodes on that path beyond the indicated fault by sending a further message (4) along the portion of the path beyond the indicated fault, to indicate to the other nodes to continue the tear down. This enables the ingress node to clean up the rest of the path beyond the fault, to avoid leaving unused capacity unavailable for reuse, and to avoid time consuming manual clean up.

Abstract: The techniques of this disclosure provide local protection for network traffic in multipoint label switched paths (LSPs) due to link or node failure using loop-free alternate (LFA) next hops. The techniques include establishing a vanilla or point-to-point (P2P) LSP with LFA next hops between routers of a multipoint LSP for use in the event of link or node failure in the multipoint LSP. Upon a failure, the multicast traffic is tunneled between the routers using the P2P LSP with LFA to an alternate next hop with an associated label stack. The techniques of this disclosure define the label stack as including a P2P LSP label as well as a multipoint LSP label. In this way, the P2P LSP with LFA may be used for fast reroute (FRR) of traffic in the multipoint LSP until a convergence process completes for a new multipoint branch of the multipoint LSP.

Abstract: Provided is a relay system having a first node and a second node, and a third node and a fourth node provided opposing thereto with connected by VLAN paths, in which the first node notifies, via a second VLAN path, the fourth node of the APS packet in which a state of a first group is stored. The third node notifies, via a third VLAN path, the second node of the APS packet in which a state of a second group is stored. The second node and the fourth node use a fourth VLAN path and exchange the state of the first group and the state of the second group, and, when the states of the first group and the second group are SF-W of a first VLAN path and the self apparatus is master, switch the first VLAN path to the second VLAN path or the third VLAN path.

Abstract: A Spontaneous Area Network (SPAN) is formed by mobile and fixed nodes using wireless transmission links between nodes, usually in a nearby geographical area. Applications allow users to create, join, leave, and manage SPANs and groups in a SPAN. Automatic procedures allow nodes to join other SPANs. Transmission power of the wireless network interface is dynamic, varying depending on battery level, type of information to transmit, state and topology of the network. A delay tolerant object layer abstraction creates, modifies, deletes, publishes, and handles Delay Tolerant Distributed Objects (DTDOs). A Patient Transport Protocol (PTP) ensures a reliable transport of information through the network while avoiding congestion conditions. An aggressive and explosive network protocol (AGENET) has routing and forwarding capacities and uses datagrams to establish communication between different nodes of the SPAN.

Abstract: An object of the present invention is to forward a packet corresponding to trajectories of roads without it being necessary to use road trajectory information. A communication device is mounted on a vehicle. The communication device includes a reception section that receives a packet containing forwarding information that represents a transmission area of the packet that is set up based on a reference direction from a transmission source; an acquisition section that acquires a running direction of its own vehicle; and a processing section that transmits the packet containing the forwarding information to at least the transmission area of the packet that has been set up based on the running direction of its own vehicle.

Abstract: In one embodiment, a period between periodic transmissions of protocol data units (PDUs) used to form or maintain a link aggregation group is initially set to a fixed value. When a stress condition is detected, the period between periodic transmissions of PDUs is increased from the initial value. When the stress condition is determined to have eased, the period between periodic transmissions of PDUs is reduced back toward the fixed value.

Abstract: A network device that processes a stream of packets has an ingress front end. The ingress front end determines whether the packets are handled in a bounded latency path or in a best-effort path. The bounded latency path packets are granted a resource with a higher priority than the best-effort path packets. As the packets are processed through a number of processing stages, with processing engines, the bounded latency packets are processed within a period of time corresponding to a guaranteed rate. Resources are granted to the best-effort path packets only when the processing engines determine that the resource grant will not impact the latency bounds with respect to the first packets.

Abstract: Solutions are provided that allow a network device to apply flow control on the MAC layer while taking into account the priority of the frame of traffic. This may be accomplished by generating a frame indicating that traffic flow should be paused, while utilizing a new opcode value, or alternatively by utilizing a new type/length value (possibly combined with a new opcode value). A receiving device may then examine the fields of the frame to determine whether it should use priority-based pausing, and then examine other fields to determine which priority-levels to pause and for how long. This allows for improved efficiency in flow control at the MAC layer. Additionally, the tagged pause frames can be forwarded over multiple hops on Local Area Networks across a Metropolitan Area Network or Wide Area Network.

Abstract: A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled.

Abstract: A throughput estimation device 500 includes a wireless link quality information acquisition portion 501 acquiring wireless link quality information denoting a quality of a wireless link established between a mobile station and a base station on a mobile communication network, and a throughput estimation portion 502 estimating a throughput which is the amount for the mobile station to receive per unit time a data sent by a transmitting device connected communicably with the mobile station via the wireless link, based on the acquired wireless link quality information.

Abstract: A quality of service for various classes of services for the transfer of electronic data packets is provided by establishing classes of packets for a customer and for assigning bandwidths to the classes for the customer. Accordingly, the amount of bandwidth for one type of service may vary from the bandwidth for another type of service over the same data connection. A device, such as an edge router of a network, may police the data packets being transferred by a customer to maintain the bandwidth being utilized by a given class of packets of the customer to within the assigned bandwidth for that class of the customer. The data packets may further be policed by core routers of the network may also to maintain the bandwidth being utilized by a given class of packets to within the assigned bandwidth for that class as specified by the service provider.

Abstract: A system for virtual internet protocol (VIP) address migration. The system comprises serving one or more clients connected via a switch router over a network to one or more network gateways. The switch router forwards packets to the VIP address of a first network gateway. If the first network gateway determines a VIP address migration criteria has been reached, the first network gateway may migrate any new traffic associated with a packet flow over to a second network gateway for more efficient processing by inserting a default flow code into the header of the VIP address of the packet. Older packets continue to process on the first network gateway, however new packets are forwarded and processed on the second network gateway. Once the packets being processed on the first network gateway completes, the second network gateway becomes the default network gateway for processing existing and new packets.

Abstract: User traffic transmitted and received by a mobile station is distributed so as not to be converged on a gateway. The gateway includes a signaling processing device and bearer data processing devices, the signaling processing device is concentrated, and the bearer data processing devices are distributed to networks close to base stations. The signaling processing device recognizes, in response to a connection request from each mobile station, a position of the base station covering the mobile station, allocates the bearer data processing device connected to the network close to the base station, and connects the base station to the allocated bearer data processing devices.

Abstract: Methods and systems for providing a network monitoring system capable of correlating client device sessions, including media streaming sessions, and client device location information to dynamically identify changes in utilization load levels in portions of a network. Further action may be pursued to modify sessions in response to detection of utilization load level changes, based on one or more policies specified by a service provider.

Abstract: A method is provided for transporting data packets over a telecommunications transport network. The data packets are carried by a plurality of bearers, the bearers each carrying data packets that relate to different ones of a plurality of services. In the method a multi-level bandwidth profiling scheme is applied to the data packets of each bearer. A series of information rates are assigned to a bearer, the profiling scheme identifying and marking each data packet of the bearer based on a desired resource sharing according to the minimum information rate with which the packet is conformant. The marked data packets are forwarded for transport through the transport network. If there is insufficient bandwidth available in the transport network to transport all data packets, data packets identified by the profiling and marked as only being conformant with a higher information rate are discarded before any data packets marked as being conformant with a lower information rate.

Abstract: A system and method which permit the RNC to control purging of data buffered in the Node B. The RNC monitors for a triggering event, which initiates the purging process. The RNC then informs the Node B of the need to purge data by transmitting a purge command, which prompts the Node B to delete at least a portion of buffered data. The purge command can include instructions for the Node B to purge all data for a particular UE, data in one or several user priority transmission queues or in one or more logical channels in the Node B, depending upon the particular data purge triggering event realized in the RNC.

Abstract: A system and method is disclosed for individually controlling User Equipment (UE) connections, dynamically and automatically, based on the applications and/or services that the connections carry. An eNodeB or other radio base station (RBS) monitors established connections between the UE and the RBS to detect applications running within those connections. Based on the stateful information of applications, the present invention proactively controls the state transitions of individual UEs between the CONNECTED and IDLE states thereby increasing radio link capacity and reducing control plane loading.

Abstract: The subject matter described herein includes methods, systems, and computer readable media for generating GTP encapsulated RTP packets in an LTE node simulator. According to one method, and LTE node simulator uses a first processing unit to generate prepackaged headers for RTP payloads. The first processing unit communicates the prepackaged headers to a second processing unit separate from the first processing unit within the LTE node simulator. The second processing unit assembles GTP packets by combining the prepackaged headers with the RTP payloads. The second processing unit transmits the GTP packets to a device under test.

Abstract: Technology for reducing coexistence interference in a multi-radio device is disclosed. One method comprises applying discontinuous reception (DRX) to a user equipment (UE) having a plurality of radio transceivers. The DRX can include a long DRX cycle for the UE. One of a 2 milliseconds (ms), 5 ms, and 8 ms cycle start offset period may be provided for the long DRX cycle to reduce coexistence interference between the plurality of radio transceivers in the UE. The cycle start offset period is selected to provide at least one Hybrid Automatic Repeat Request (HARQ) process reservation pattern to reduce the coexistence interference between the plurality of radio transceivers in the UE.

Abstract: A method and apparatus for monitoring a downlink control channel in a wireless communication system is provided. A wireless device receives a discontinuous reception (DRX) command from a base station. The DRX command indicates an activation of at least one DRX pattern from a plurality of DRX patterns. Each of the plurality of DRX patterns includes an on-duration which specifies at least one subframes to monitor a downlink control channel within a DRX cycle. The wireless device monitors the downlink control channel in at least one subframe which belongs to on-duration of the at least one activated DRX pattern.

Abstract: A method for coordinated transmission in a plurality of cells of a wireless communication system, wherein a user equipment triggers coordinate transmission of a plurality of cells if it detects an interference condition between signals received by the plurality of cells, the user equipment detecting the interference condition based on a radio quality metric dynamically set by the network and triggering coordinate transmission by transmitting a trigger signal to at least a cell of the plurality of cells. A radio equipment and a user equipment for use in a wireless communication system can implement coordinated transmission with the method.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of Time-Division Duplexing (TDD) Uplink-Downlink (UL-DL) interference management. Some embodiments include transmitting a message including a channel quality parameter and a Time-Division-Duplex (TDD) configuration update to at least one other base station of a cellular cell, deciding if the cellular cell is to be operated in a cluster based on the channel quality parameter value, and coordinating an adjustment of uplink-downlink configuration according to a traffic condition.

Abstract: A user device may receive a portion of multicast content and may obtain transmission information associated with the portion of the multicast content. The transmission information may identify parameters or radio conditions under which the portion of the multicast content is being received by the user device. The user device may provide, to a server device, the transmission information, and may receive content that remedies a condition, associated with the portion of the multicast content. The condition may be detected, by the server device, based on the transmission information.

Abstract: Techniques are provided for hosting a first virtual switch and one or more virtual machines (VMs) configured to be part of a virtual LAN (VLAN). The first virtual switch enables communications among the VMs arranged in one or more private VLANs (PVLANs). The first virtual switch receives a packet from a source VM that is evaluated for source identifier information associated and destination identifier information associated with a destination VM serviced by a second virtual switch for which the packet is destined. An evaluation result is obtained. Based on the evaluation result, the first virtual switch determines whether the source and destination VMs belong to a same PVLAN and drops the packet if the source VM and the destination VM do not belong to the same PVLAN.

Abstract: A system and method for performing a first diagnostic test on a first class of service on a network link during a current measurement period, performing at least one further diagnostic test on a second class of service on the network link during the current measurement period, determining whether an alert was present during a previous measurement period and generating a current failure alert based on results of the first and the at least one further diagnostic tests if an alert was present during the previous measurement period.

Abstract: In one embodiment, one or more indicia of stress are monitored. Based on the one or more indicia of stress, it is determined a stress condition exists. In response to the stress condition, one or more link aggregation actors and partners are caused to enter a grace state for a grace period. While the one or more link aggregation actors and partners are in the grace state, link aggregation formation is paced on a plurality of links by delaying formation of one or more new link aggregation groups on the plurality of links until a hold is released. Upon expiration of the grace period, the grace state is exited.

Abstract: Method and devices for use in a wireless device are described herein. A signal is received over a plurality of time segments, the signal over each time segment including a plurality of resource element blocks. For each time segment, at least one resource element block is selected from the plurality of resource element blocks of the time segment based on information determined about the time segment. For each time segment, a power value associated with the at least one resource element block of the time segment is determined. For each time segment, a gain adjustment value to adjust the gain of the time segment or one or more subsequent time segments of the signal is determined based upon the power value associated with the at least one resource element block.

Abstract: Methods and apparatus for direction routing between nodes of networks are disclosed. An example method includes identifying a destination node of first data received at a first node; calculating a logical distance from the first node to the destination node; and, when the logical distance meets a threshold condition and when a direct route from the first node to the destination node is blocked according to a protocol setting, overriding the protocol setting to enable transmission of the first data from the first node to the destination node via the direct route.

Abstract: The techniques are provided automatically detecting when performing pre-transmission compression on data to be sent over a network connection will be preferable to sending the data uncompressed, and for automatically performing pre-transmission compression only when doing so is determined to be beneficial. The techniques involve performing compression on sample data. The time it takes to perform the compression on the sample data, along with the reduction in size achieved by the compression, are factors used to automatically determine whether compressing data before sending the data over a network connection will achieve better results that sending the data uncompressed. In some embodiments, multiple compression algorithm/compression level combinations are tested at different points in the transmission. At each point, the sending device may switch to the algorithm/level combination that is producing the best results on the current sample.

Abstract: A service quality metrics selection capability is presented. The selection of service quality metrics for a service may include selecting a plurality of candidate service quality metrics for a service from a set of available service quality metrics, associating each of the candidate service quality metrics with a respective one of a plurality of user experience categories and a respective one of a plurality of service user functions of the service, and selecting at least a portion of the candidate service quality metrics to be associated with the service. The selection of candidate service quality metrics to be associated with the service produces a set of selected service quality metrics for the service, which may be used to manage service quality assurance for the service.

Abstract: Some embodiments provide a method in a wireless device for reporting channel state information, CSI, for a CSI process. The CSI process corresponds to a reference signal resource and an interference measurement resource. According to the method, the wireless device obtains an adjustment value associated with the CSI process. The wireless device estimates an effective channel based on one or more reference signals received in the reference signal resource, and applies the adjustment value to the estimated effective channel, thereby obtaining an adjusted effective channel. Furthermore, the wireless device determines channel state information based on the adjusted effective channel, and on interference estimated based on the interference measurement resource. Finally, the channel state information is transmitted to a network node.

Abstract: A User Equipment (UE) for sending feedback information is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE determines a primary cell (PCell) configuration. The UE also determines a secondary cell (SCell) configuration. The SCell configuration is different from the PCell configuration. The UE further determines a feedback parameter Mc based on the PCell configuration and the SCell configuration. Mc indicates a number of subframes that require Physical Downlink Shared Channel (PDSCH) Hybrid Automatic Repeat Request Acknowledgement/Negative Acknowledgement (HARQ-ACK) association for a cell c in a given uplink subframe. The UE also determines SCell HARQ-ACK information. The UE additionally sends the SCell HARQ-ACK information based on the feedback parameter.

Abstract: Methods and apparatus' of determining radio link quality are disclosed. According to various implementations, information indicating the time-frequency blocks to be monitored by a UE to enable the UE to locate a control channel is determined. The UE receives configuration information regarding resources used by a channel state information reference signal. It also receives configuration information regarding an interference measurement resource, as well as a channel state information reference signal. The channel state information reference signal uses the channel state information reference signal resources. A synchronization condition is determined based on the time frequency blocks to be monitored by the UE, the received channel state information reference signal and the interference measurement resource. The determined synchronization condition is sent to a higher layer.

Abstract: Methods and devices for optimizing on-time throughput in a wireless network. An enhanced node B (eNodeB) integrating two or more air interfaces schedules transmissions, for a measurement period, over at least one of the two or more air interfaces. The eNodeB estimates, based on the transmissions, a metric of on-time throughput for the user equipment (UE) within the cell, where on-time throughput is a measure of an amount of data that arrives at a destination before a delay threshold has been reached and at a bit-rate greater than or equal to a target bit-rate. The eNodeB then assigns UEs within the cell to an air interface of the two or more air interface to maximize the metric of on-time throughput for the UEs within the cell.

Abstract: Methods and apparatus for improved utilization of air link resources are discussed in wireless communications systems employing multi-sector base stations and wireless terminals with multiple antennas. Timing synchronization is maintained across the base station sectors, and the same set of tones are used in adjacent sectors. In a sector boundary region, which is typically a high interference region, a wireless terminal is set to a sector pair state and operated in a MIMO mode of operation, communicating with two adjacent base station antenna faces of the same base station concurrently, the two different adjacent base station antenna faces corresponding to different adjacent sectors. Thus, typically high interference sector boundary regions, are converted into high capacity regions by having the sectors coordinated and utilizing MIMO techniques.

Abstract: Apparatus and methods are disclosed for adapting the power of an access probe transmission, in accordance with a reverse link underload indicator provided by the base station. In one example, the base station can transmit a one-bit reverse link underload indicator as an information element broadcasted within a general page message (GPM). Here, the reverse link underload indicator can indicate whether a measured rise-over-thermal (RoT) at the base station is less than a given threshold. The access terminal may accordingly reduce the initial transmit power of an access probe transmission in the case of a reverse link underload condition, as this condition would indicate that the base station could accommodate reduced power access probe transmissions without substantially decreasing the probability of a quick detection of the access attempt. Other aspects, embodiments, and features are also claimed and described.

Abstract: An apparatus and method that allow user equipment (UE) to transmit information directly with other user equipment, using a device-to-device (D2D) mode is disclosed herein. A first D2D UE (dUE1) that wishes so communicate to a second D2D UE (dUE2) in D2D mode makes various communications requests to an Evolved Node B (eNB), which can facilitate the connection between the dUE1 and the dUE2. Among these requests are to make the D2D connection via WiFi instead of via Long Term Evolution (LTE). The eNB determines the WiFi capabilities of dUE1 and dUE2, then assigns a subset of available channels to be scanned by dUE1 and a separate subset of available channels to be scanned by dUE2. Thereafter, the eNB can assign a WiFi channel based on the scans performed by dUE1 and dUE2.

Abstract: Technology for performing a handover in a heterogeneous wireless network (HetNet) is disclosed. One method comprises receiving, at an anchor serving cell in the HetNet, channel measurement reports made by a user equipment (UE) for a plurality of cells. A transmission point change request can be sent, based on the channel measurements for the UE, from the anchor serving cell to a target transmission point. The target transmission point is located in one of the plurality of cells. A transmission point change indicator is sent from the anchor cell to the UE to indicate a change in TP with which the UE will communicate via an air interface, while maintaining a connection to the anchor serving cell.

Abstract: There is provided an apparatus for performing loop-free transmission in a communication network. The apparatus includes a plurality of ports, a controller, a memory, and an interface unit. The controller generates monitoring frames that are transmitted to another apparatus, so as to monitor a connection state of the communication network. The memory includes port-state information that stores a port state in association with each of the plurality of ports. The interface unit processes a frame based on the port-state information and sets, in the port-state information, a stopped state to a first port included in the plurality of ports, in accordance with a time period during which the monitoring frames are not generated. The interface unit discards a frame received via the first port for which the stopped state is set in the port-state information.

Abstract: A system and method for improving signal reception in an access point. The system and method may comprise the steps of: transmitting a non-zero 802.11 NULL-data packet to a client, wherein the traffic test is initiated at intervals; receiving an 802.11 ACKnowledgement packet from the client wherein the 802.11 ACKnowledgement packet indicates that the non-zero 802.11 NULL-data packet was received by the client; and discarding the non-zero 802.11 NULL-data packet after receipt.

Abstract: A method, apparatus and computer program product are provided in order to provide for periodic measurements related to a frequency identified by the network, such as a downlink frequency associated with a secondary uplink frequency. In the context of a method, a message is caused to be transmitted to a mobile terminal indicating that the mobile terminal is to perform periodic measurements in relation to a secondary uplink frequency. Following the performance of the periodic measurements by the mobile terminal, the method also includes receiving an indication of the periodic measurements in relation to the secondary uplink frequency that have been performed by the mobile terminal.

Abstract: Systems and methods for implementing a differential signal to noise ratio (DSNR) based rate adaptation for wireless networks are disclosed. The described methods probabilistically adapt the rate of data transmission based on an assessment of the causes of data loss. The described methods include determining a DSNR for data transmission during a predetermined window of time and adapting the transmission rate in a probabilistic manner responsive to the differential SNR and a differential SNR threshold for the data transmission.

Abstract: A mobile communication system includes a network based aggregation controller for controlling aggregation of component carriers from a first spectrum and a second spectrum. In addition, the mobile communication system includes a group of mobile terminals. The network based aggregation controller is configured to send a group message on at least one component carrier of the first spectrum to the group of mobile terminals. The mobile terminals receive the group message. A terminal based aggregation controller in each of the mobile terminals is configured to control operation of the respective mobile terminal with respect to the at least one component carrier of the second spectrum. This control is accomplished in response to the received group message.

Abstract: Provided are a radio base station, a user terminal and a radio communication method capable of making accurate measurement in various network configurations in HetNet. The radio communication method according to the present invention has, in a heterogeneous network having a network configuration where a macro cell overlays a micro cell that is smaller than the macro cell, a radio base station that forms the macro cell and is connected to a macro terminal under control of the macro cell determining a measurement subframe to measure a CRS based on the network configuration, generating a time reference indicating the measurement subframe and transmitting a signal including the time reference and the CRS to the macro terminal; and the macro terminal receiving the time reference and the CRS and measuring the CRS in the measurement subframe indicated by the time reference.

Abstract: The present disclosure proposes a method of allocating resources for a scheduling request (SR), a user equipment using the same method, and a control node using the same method, which is related to dynamically adjusting a dedicated SR (D-SR) period which is a semi-persistently configured D-SR resource used to transmit a SR. The method, the user equipment, and the control node would perform functions including establishing a connection between the user equipment and the control node in order to transmit uplink data, the user equipment transmitting through the connection an assisting information to the control node after establishing the connection to adjust the D-SR period, and the user equipment obtaining a second D-SR period after transmitting the assisting information to the control node.

Abstract: A method includes receiving, in a communication terminal, signals from a group of cells. The group of cells cooperates in a Coordinated Multipoint (CoMP) transmission scheme that assigns multiple Channel State Information Reference Signals (CSI-RS) resources to the cells. A first subset of the CSI-RS resources is assigned to periodically report channel feedback on a first uplink channel, and a second subset of the CSI-RS resources is assigned to a-periodically report the channel feedback on a second uplink channel. The channel feedback is computed for the multiple CSI-RS resources. The channel feedback computed for the CSI-RS resources is transmitted in the first subset on the first uplink channel, and the channel feedback computed for the CSI-RS resources in the second subset is transmitted on the second uplink channel.

Abstract: A method and apparatus report channel state information (CSI) feedback of a user equipment (UE) in a coordinated multipoint communication system. The method includes identifying, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The method also includes using the identified interference measurement resource to derive an interference measurement. The apparatus includes a controller configured to, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, identify an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The controller is configured to use the identified interference measurement resource to derive an interference measurement.