Abstract:
Systems and techniques for joint transmission cooperative multi-point. A set of n CSI reference signal resources are to be measured by a user device. The n CSI reference signal resources include at least one CSI reference signal resource spanning over at least two transmission points. Channel state information feedback corresponding to each CSI reference signal resource is configured. Upon receiving CSI from the user device, at least one precoder is selected for coherent joint cooperative multipoint transmission based on inter-transmission point phase relationship information. A co-phasing factor is derived from transmitted precoders over a cross-cell CSI reference signal resource, the derivation including transmission of reference signals using first and second precoding vectors on two ports, computation of a third vector using feedback based on the precoded reference signals, and computation of the co-phasing factor based on the first, second, and third vectors.
Abstract:
The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for implementing power control for uplink orthogonal and non-orthogonal resources for an uplink channel, e.g. for PUCCH or PUCSH, when CoMP is utilized in a wireless network (e.g., LTE).
Abstract:
The application relates to channel state feedback reporting in wireless communication networks and in particular to modifications of the procedure for reporting CSI as specified by section 7.2 of 3GPP TS 36.213 V10.3.0. and the corresponding RRC protocol as specified by 3GPP TS 36.331 V10.2.0. The current cycle for CSI measurement and reporting is such that the UE performs separate CSI measurements for each report. However, the coverage area of CSI measurement reporting is lower than other uplink reporting such as e.g. ACK/NACK on PUCCH which supports subframe repetition, leading to an imbalance. Therefore, it is rather clear that it is highly beneficial to support coverage extension for CSI reports. The issue then arises as to how to realize the CSI coverage enhancement on top of existing/evolving CSI reporting framework. The application proposes to realize said CSI coverage enhancement by reporting (450) the same CSI report multiple times from the UE (110) to an eNB (220).
Abstract:
Disclosed are a method and a corresponding apparatus relating to wireless telecommunication systems and more particularly to efficient resource allocation schemes supporting transmission of multiple periodic channel state information (CSI) reports on the physical uplink control channel (PUCCH) during the same subframe while maintaining single carrier properties of the transmitted signal. The method includes determining that at least two reports to be transmitted on an uplink resource collide with respect to the uplink resource, applying at least one resource selection policy to the at least two reports and selecting a resource to be used for transmitting a plurality of the at least two reports.
Abstract:
Communication systems, for example, wireless communication systems such as long term evolution (LTE) release 11 (Rel-11) may use methods for multiplexing of periodic channel state information reports. Such methods may support the support heavy reliance on channel state information signaling in uplink to provide improved downlink performance. A method can include multiplexing a plurality of channel state information reports into a same subframe. The plurality of channel state information reports can correspond to a user equipment. The method can further include prioritizing a set of channel state information reports including the plurality of channel state information reports.
Abstract:
A method includes receiving initial acknowledgement resource information at a user device from a base station. The initial acknowledgement resource information is associated with a subset of acknowledgement resources. The method includes determining in dependence on the initial acknowledgement resource information which of the subset of acknowledgement resources is to be used. The user device transmits an acknowledgement on the determined resource.
Abstract:
In one exemplary embodiment, a method includes: configuring a common resource space having a plurality of time-frequency resources and code resources, where the common resource space includes a first portion for a first type of signaling and a second portion for a second type of signaling, where the first type of signaling includes at least one of persistent acknowledgement signaling and scheduling request signaling, where the second type of signaling includes dynamic acknowledgement signaling; and allocating, based on the configured common resource space, resources of the common resource space for the at least one of persistent acknowledgement signaling and scheduling request signaling.
Abstract:
A method includes receiving at least one reference signal from a first cell in a less active state and at least one reference signal from a second cell in a less active state within a same or different sub frames of a set of sub frames, wherein said at least one reference signal from the first base station is associated with different resource elements of said set of sub frames to those associated with the at least one reference signal from the second cell.
Abstract:
A method including receiving one or more data packets wirelessly in one or more downlink transmission opportunities on one or more radio carriers, receiving scheduling information including an indication of uplink control information to be transmitted related to at least one of the one or more data packets, and causing wireless transmission of the uplink control information in an uplink transmission opportunity.
Abstract:
There is provided a method comprising controlling receiving, at a node, subframe type configuration information, said subframe type configuration information defining at least one subframe type of a group of subframes to be used in a secondary cell, said secondary cell configured to provide at least one of licensed-assisted access, licensed shared access and co-primary sharing access and using said subframe type configuration information to cause the node to operate in accordance with that configuration in the secondary cell.