Abstract: A receiving unit or a transmitting unit of a wireless network, for facilitating noise and interference measurements on an air interface. The receiving unit includes: a network interface which obtains information relating to a time-varying layout of a silent resource element (RE) grid; an electronic memory having code in communication with the network interface which stores the information; and a processing unit in communication with the electronic memory that takes a presence of a silent RE grid into account in the reception of a control or a data channel. A method for a receiving/transmitting unit of a wireless network, for facilitating noise and interference measurements on an air interface is described. Information relating to a time-varying layout of a silent resource element (RE) grid is obtained and a presence of a silent RE grid is taken into account in the reception of a control or a data channel.

Abstract: A UE and a method therein for transmission power control of uplink transmissions are provided. The method comprises receiving, through signalling a configuration indicating at least one reference signal, RS, and a reference transmission power level for each indicated RS. The method further comprises measuring received power of the indicated at least one RS, and for each measured received power, determining a pathloss, PL, based on the measured received power and the reference transmission power level for each measured received power. The method further comprises determining an uplink transmission power based on at least one determined PL.

Abstract: A method in a user equipment device for estimating a channel upon receiving an enhanced control channel (eCCH) from a network node in a telecommunications system includes distributing the eCCH over multiple resource pairs, where each of the multiple resource block pairs includes a number of resources. Each of the resources is associated with a respective antenna port. The user equipment device identifies an antenna port that is associated with multiple ones of the resources. The multiple ones of the resources are present in different resource block pairs of the multiple resource block pairs over which the eCCH is distributed. Identifying the antenna port is based on how the eCCH is mapped to the multiple resource block pairs. The user equipment device estimates the downlink channel for the eCCH based on the identified antenna port in the multiple ones of the resources in the multiple resource block pairs.

Abstract: Methods for wirelessly transmitting user data and control information using a plurality of transmission layers include encoding bits of control information to form control codewords and encoding bits of user data to form user data codewords. The method also includes generating a plurality of vector symbols based on the control codewords and the user data codewords. Each vector symbol includes a plurality of modulation symbols that are each associated with a transmission layer over which the associated modulation symbol will be transmitted. Generating the plurality of vector symbols includes interleaving bits of the control codewords and bits of the user data codewords so that the control information is carried in modulation symbols associated with the same transmission layers in the vector symbols transmitted during the subframe that carry the control information. The method also includes transmitting the plurality of vector symbols to a receiver over a plurality of transmission layers.

Abstract: Methods and apparatus are disclosed for receiving user data in a wireless communication system that employs coordinated multi-point transmission of the user data from a first cell serving a wireless terminal and a second cell site neighboring the first cell site. In an exemplary system, the first cell site maps control signals and user data to a time-frequency resources according to a first mapping pattern, while the second cell site maps control data and traffic data to the time-frequency resources according to a second mapping pattern.

Abstract: Methods and devices provide a feedback message having unequal error protection. The feedback message may include channel quality indicators. The channel quality indicators may have different levels of error protection based on a transmission property.

Abstract: For data transmission in a wireless communication network, a radio channel divided into subframes in the time domain is used. A network system (100) assigns resource elements in a first subframe (20) and at least one subsequent subframe (21, 22) to a user equipment (200). By downlink control information transmitted in the first subframe (20), the network system (100) sends a multi-subframe assignment (503) to the user equipment (200). The multi-subframe assignment (503) indicates the assigned resource elements to the user equipment (200). In at least a part of the assigned resource elements in the first subframe (20) and at least a part of the assigned resource elements in the at least one subsequent subframe (21, 22), the network system (100) transmits precoded reference symbols (504, 06, 508) to the user equipment (200).

Abstract: Systems and methods are disclosed for using multiple configuration groups having corresponding configuration identity (CID) parameters to configure a transmission channel and a reception channel for a user equipment device in a cellular communication network. In one embodiment, a user equipment device in a cellular communication network obtains CID values for CID parameters for a number of configuration groups. Each of the configuration groups includes one or more transmission channel or reception channel parameters. For each of the configuration groups, the user equipment device configures the parameters in the configuration group based on the CID value obtained for the CID parameter for the configuration group. In this manner, the transmission channel and the reception channel for the user equipment device are configured based on multiple CID values rather than a single physical layer cell identifier for a cell in which the user equipment device is located.

Abstract: The present disclosure discloses a method used in a UE for estimating a frequency offset between a CRS of a serving cell of the UE and a DM-RS of a data transmission to be decoded by the UE, using a set of quasi-co-located reference signals. The method comprises: comparing a number of Resource Blocks, RBs, for the data transmission to a first threshold; selecting one or more quasi-co-located reference signals from the set of quasi-co-located reference signals based on a result of the comparison; and estimating the frequency offset based on the selected one or more quasi-co-located reference signals. The present disclosure also relates to a UE for estimating a frequency offset between a CRS of a serving cell of the UE and a DM-RS of a data transmission to be decoded by the UE, using a set of quasi-co-located reference signals.

Abstract: A device and method for communicating frequency-coded symbols that include data elements and reference symbols are disclosed. In one aspect, a carrier frequency band includes a plurality of subcarrier frequency bands. Data elements are transmitted and received on respective pairs of adjacent subcarrier frequency bands to provide diversity. Reference symbols are transmitted and received on predetermined subcarrier frequency bands. Muting is applied to selected subcarrier frequency bands based on the number and frequency configuration of the reference symbols.

Abstract: Systems and methods relating to assisting a wireless device with suppression of an interfering physical channel during reception of a desired physical channel are disclosed. In some embodiments, a method of operation of a wireless device to assist with suppression of an interfering physical channel during reception of a desired physical channel comprises receiving assistance information for an interfering physical channel and receiving a desired physical channel while suppressing the interfering physical channel according to the assistance information for the interfering physical channel. The assistance information comprises an identity used to generate a reference signal associated with the interfering physical channel and information indicative of one or more transmission constraints on transmission of the interfering physical channel, the one or more transmission constraints comprising a spatial multiplexing rank restriction and/or a precoding matrix restriction.

Abstract: A system and method for improving the link adaptation in a wireless communication system is disclosed. User Equipment (UE) forms an interference hypothesis by amending a measured interference and noise by artificially injecting, to the measured interference and noise, interference corresponding to at least one emulated interfering isotropic signal that is virtually transmitted over an associated estimated effective channel. The UE further determines at least one channel state information (CSI) report based on the interference hypothesis, and transmits the CSI report to the network.

Abstract: A method in a first node for adapting a multi-antenna transmission to a second node over a wireless channel is provided. The wireless channel has at least three inputs and at least one output. The first node and the second node are comprised in a wireless communication system. The method includes obtaining at least one symbol stream, determining a precoding matrix having a product structure created by a block diagonal matrix being multiplied from the left with a block diagonalizing unitary matrix, precoding the at least one symbol stream with the determined precoding matrix, and transmitting the precoded at least one symbol stream over a wireless channel to the second node.

Abstract: A method for wirelessly transmitting data using a plurality of transmission layers includes estimating a number of vector symbols to be allocated to transmission of user data codewords during a subframe and determining a number of bits in a plurality of user data codewords to be transmitted during the subframe. The method also includes calculating a number of control vector symbols to allocate to control information based at least in part on the estimated number of vector symbols and the determined number of bits. Additionally, the method includes mapping control codewords to the calculated number of control vector symbols and transmitting vector symbols carrying the user data codewords and the control codewords over the plurality of transmission layers during the subframe.

Abstract: According to one aspect of this disclosure, the configuration of which Interference Measurement Resources, “IMRs”, a given user equipment, “UE”, should measure for Channel State Information, “CSI”, reporting is made more or less invariant to dynamic traffic variations affecting the set of Coordinated Multi-Point, “CoMP”, transmission points used for serving the UE, or to the use of dynamic blanking for those transmission points. These goals are achieved at least in part by configuring one or more of the transmission points to follow a first rule embodying a negative logic. According to the first rule, the transmission point transmits on a given IMR if it has been deemed as being not likely to transmit data at a time relevant to the IMR, and, conversely, to not transmit the IMR if it has been deemed as being likely to transmit data at a time relevant to the IMR.

Abstract: A method for wirelessly transmitting data using a plurality of transmission layers includes estimating a number of data vector symbols to be allocated to one or more user data codewords during the subframe and determining a number of bits in the one or more user data codewords. The method also includes calculating a nominal number of control vector symbols to allocate to control information based, at least in part, on the estimated number of data vector symbols and the determined number of bits in the one or more user data codewords. Additionally, the method includes determining an offset value based, at least in part, on a number of layers over which the wireless terminal will be transmitting during the subframe and calculating a final number of control vector symbols by multiplying the nominal number of control vector symbols and the offset value.

Abstract: A method for assisting the adaptation of a signal from a first node to a second node is provided. The first node communicates with the second node in a wireless communication system over a radio link. The second node has a codebook comprising a set of possible information alternatives for assisting the adaptation of a signal received from the first node. The second node may select an information alternative from the codebook and send it to the first node to assist the first node in adapting the signal. The first node is configured with a number of subsets, each comprising a part of the possible information alternatives. The first node requests that the second node restrict the selection of information alternatives to one of the subsets, and in response, receives an information alternative from the second node that is selected from among the subsets configured according to the configuration request.

Abstract: The present disclosure relates to a method and arrangement for controlling re-transmission in a user equipment supporting uplink spatial multiplexing. The user equipment can detect an uplink grant on a physical downlink control channel, the uplink grant being valid for at least one transport block. The UE can also detect that at least one transport block is disabled, such that no grant is associated with the at least one transport block. The UE can interpret the at least one disabled transport block as an acknowledgement, ACK, of a previous transmission corresponding to the disabled transport block irrespective of which indication is received on the reception status feedback channel for the previous transmission.

Abstract: Systems and methods are disclosed for using multiple configuration groups having corresponding configuration identity (CID) parameters to configure a transmission channel and a reception channel for a user equipment device in a cellular communication network. In one embodiment, a user equipment device in a cellular communication network obtains CID values for CID parameters for a number of configuration groups. Each of the configuration groups includes one or more transmission channel or reception channel parameters. For each of the configuration groups, the user equipment device configures the parameters in the configuration group based on the CID value obtained for the CID parameter for the configuration group. In this manner, the transmission channel and the reception channel for the user equipment device are configured based on multiple CID values rather than a single physical layer cell identifier for a cell in which the user equipment device is located.

Abstract: In a transmitter or transceiver, signals can be precoded by multiplying symbol vectors with various matrices. For example, symbol vectors can be multiplied with a first column subset of unitary matrix which spreads symbols in the symbol vectors across virtual transmit antennas, a second diagonal matrix which changes a phase of the virtual transmit antennas, and a third precoding matrix which distributes the transmission across the transmit antennas.