Abstract: A method for receiving, by a UE, information for interference cancellation, the method includes receiving assistance control information for removing interference data from a neighboring eNB; and receiving primary control information indicating the interference data using the assistance control information, the assistance control information includes at least one of control channel element (CCE) indices, an aggregation level and a downlink control information (DCI) format of a control channel on which the primary control information is transmitted and cyclic redundancy check (CRC) bits for the control channel, the assistance control information includes sub-assistance control information on neighboring UEs simultaneously scheduled by the neighboring eNB.

Abstract: A method and a system for allocating a radio channel are disclosed. The method includes the steps of determining one or more priority radio channels exclusively for transmitting priority data; determining whether there is a condition of allocating the one or more priority radio channels in an organized wireless group (OWG); and allocating one of the one or more priority radio channels, when the one or more priority radio channels are empty.

Abstract: A method for managing the HF frequencies in a broadband communication network, comprises the following steps: determining the range of passing frequencies for a user for a given link and SLA service; establishing the set of authorised frequencies S? in the transmission range of the user with the different power and modulation configurations for each frequency; analysing the received spectrum in order to determine the frequency or frequencies already used and deciding, on the basis of their associated usage type, whether they must be excluded; for each possible frequency fl of the set S??, determining the necessary power {tilde over (P)}ij, i=1 . . . N, j=1 . . . m for each of the m possible rate/waveform configurations, taking into account the power limit on each frequency fl; allocating the frequencies fl of the set S?? to the different users, their modulation and their power, by taking account of multi-carrier constraints.

Abstract: A method of selecting a transmission parameter and a spectrum allocation apparatus are provided. The method of selecting a transmission parameter involves collecting frequency band information comprising a frequency bandwidth and communication environment information comprising a power density of noise, constituting a plurality of single-objective fitness functions comprising a bandwidth fitness function based on data transmission using two frequency bands, using the frequency band information and the communication environment information, constituting a multi-objective fitness function obtained by assigning a weight value to each of the plurality of single-objective fitness functions, and selecting the transmission parameter by applying a genetic algorithm to the multi-objective fitness function.

Abstract: A transmitting apparatus includes a symbol generator configured to generate a preamble symbol including signaling data and a reference signal, a frequency allocator configured to allocate first subcarriers and second subcarriers to the signaling data and the reference signal, respectively, in a frequency corresponding to the preamble symbol and map the signaling data and the reference signal to the allocated subcarriers, and a transmitter configured to transmit a signal including the preamble symbol and a data symbol, wherein the reference signal is a signal used for channel estimation or frequency offset compensation. Thus, synchronization is accurately corrected and channel estimation is achieved using the reference signal included in the preamble symbol, thereby reducing a ratio of a pilot included in a data symbol.

Abstract: The present invention relates to a method for transmitting a terminal-specific reference signal for a control signal by a base station in a wireless communication system. Specifically, the method is characterized in that it comprises: transmitting a plurality of control channels and a first terminal-specific reference signal for the plurality of control channels to a first resource region; and transmitting one control channel and a second terminal-specific reference signal for the control channel to a second resource region, wherein the different descrambling identifiers are applied to the first and second terminal-specific reference signals.

Abstract: Disclosed are a method and an apparatus for transmitting channel state information (CSI) of a user equipment, which is allocated a plurality of serving cells, in a wireless communication system. The method comprises: receiving setting information for setting groups comprising at least one serving cell from the plurality of serving cells, and transmitting periodic CSI with respect to a group that is selected according to priority between the groups, when the periodic CSI with respect to each of the groups is set to be transmitted from the same subframe, wherein the periodic CSI with respect to each of at least two serving cells are transmitted together when the at least two serving cells are included in the group that is selected.

Abstract: A radio station (1) includes a first part (1A) and a second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part. Each of the first part (1A) and the second part (1B) includes a digital signal processing unit (11A, 11B) and is capable of alternatively performing digital signal processing for user data. An analog signal processing unit (13) arranged in the second part performs analog signal processing including at least one of frequency conversion and power amplification to provide an air interface to a mobile station.

Abstract: According to one embodiment of the present invention, the method for receiving a channel state information (CSI)-reference signal (RS) from a wireless communication system by a user device comprises the steps of: receiving resource configuration information on the CSI-RS; and receiving the CSI-RS on the basis of the resource configuration information on the CIS-RS, wherein the resource configuration information on the CSI-RS includes information on a cell specific-RS (CRS) related to the CSI-RS, and the user device can assume that an antenna port related to information on the CRS and an antenna port used for transmitting CSI-RS corresponding to the resource configuration information on the CSI-RS are quasi co-located.

Abstract: A mobile communications network includes a core network including infrastructure equipment, and a radio network including plural base stations configured to provide a wireless access interface for communicating data to/from communications terminals. One base station can operate as a serving base station to one of the communications terminals, to establish one or more communications bearers for communicating user data to/from the communications terminal via the core network and the radio network, and co-operate with at least another of the base stations to communicate the user data to/from the communications terminal.

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting an uplink signal. A method for transmitting an uplink signal at a UE in a wireless communication system includes, when a virtual cell ID for a reference signal for demodulation of a physical uplink channel is provided, generating a sequence of the reference signal on the basis of the virtual cell ID, and transmitting the generated reference signal to an eNB. A group hopping pattern of the reference signal can be determined on the basis of the virtual cell ID.

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting an uplink signal. A method for transmitting an uplink signal at a UE in a wireless communication system includes, when a virtual cell ID for a reference signal for demodulation of a physical uplink channel is provided, generating a sequence of the reference signal on the basis of the virtual cell ID, and transmitting the generated reference signal to an eNB. A sequence shift pattern of the reference signal can be determined on the basis of the virtual cell ID.

Abstract: The embodiments herein relate to a method in a base station (101) for transmitting a transport block to a user equipment (105) in a communications network (100). The transport block comprises a plurality of bits. The base station (101) selects (203a, 203b, 401) a transport format. The base station (101) dynamically selects (204a, 203b, 402) a first redundancy version parameter based on a decoding performance for the transport block. The base station (101) transmits (205a, 204b, 404) the transport block comprising the plurality of bits distributed according to the dynamically selected first redundancy version parameter and according to the selected transport format in a first transmission to the user equipment (105).

Abstract: Provided are a wireless communication terminal device and a control channel forming method with which, in the forming of a control channel for transmitting control information including an ACK/NACK and CSI (channel state information), wasteful use of resources is reduced compared to that in related art. In the case where CSI is transmitted independently, and in the case where CSI and an ACK/NACK are transmitted at the same time, the same format is used to form a control channel. Furthermore, in the case where an ACK/NACK is transmitted independently, another format is used if a component carrier (CC) number is equal to or less than 2, and the same format is used if the CC number is equal to or greater than 3.

Abstract: The method for receiving a downlink signal in a wireless communication system, according to one embodiment of the present invention, comprises: receiving, from a base station, a candidate seed list and downlink control information for the generation of a sequence of a downlink demodulation reference signal, wherein a seed value is selected from the candidate seed list on the basis of seed value indicating information contained in the downlink control information and the sequence of the downlink demodulation reference signal is generated by using the selected seed value. The candidate seed list may include a plurality of hybrid automatic repeat request (HARQ) process identifiers and virtual cell identifiers related to the plurality of HARQ process identifiers.

Abstract: A method is disclosed, including supporting, in a communication apparatus (UE), a stand-alone operation mode for using, without a core network (EPC) involvement, bearer services provided by a local network (LTE-LAN). The method further includes supporting, in the communication apparatus (UE), flexible single radio/dual radio modes for offloading resources of a macro network (LTE) in order to use bearer services provided by the macro network (LTE) either in the single radio mode or in the dual radio mode, wherein said offloading is controlled by an associated macro network apparatus (eNB).

Abstract: The mobile communication system is a system in which one resource block is configured by a plurality of resource elements. The mobile communication system comprises an assignment unit that divides the one resource block, and assigns the divided resource blocks to a plurality of radio terminals. A division pattern of the one resource block is decided beforehand.

Abstract: The disclosure relates to a method (30) for radio bearer release performed in a base station node (2) of a communication system (5). The base station node (2) provides one or more radio bearers to a user equipment (1), and the communication system (5) comprises a serving gateway (4). The method (30) comprises: receiving (31) an error message from the serving gateway (4), the error message indicating a faulty radio bearer; awaiting (32), for a delay time, additional error messages indicating faulty radio bearers; and releasing (33) the one or more radio bearers being indicated as faulty.

Abstract: A wireless communication system includes an upper transmission station and a lower transmission station, each serving as a transmission station, a terminal serving as a reception station. The upper transmission station allocates a downlink control channel for each terminal to part of a predetermined data-channel region ascribed to the lower transmission station based on a demodulation reference signal for each transmission station. Based on the allocation result, the lower transmission station allocates the downlink control channel for each terminal, which is disposed at art of the data-channel region thereof. The terminal decodes the downlink control channel based on the demodulation reference signal.

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for performing MAC header compression in a wireless communication system. In a wireless communication system according to an embodiment of the present invention, a station STA may: receive information on assigning a plurality of association identifiers (AIDs) to the station STA from an access point (AP); receive, from the AP, a first frame including a medium access control (MAC) header that includes an address field set to one of the plurality of AIDs; and assign each of the plurality of AIDs by flow for the station STA.

Abstract: The application relates to the procedures Routing Area Update RAU in UTRAN and Tracking Area Update TAU in LTE. Furthermore, it relates to PDP context procedure in UTRAN as well as PDN connection procedure in LTE. In the current RAU procedure, a SGSN, which fails to update the Routing Area, e.g. because it receives the DNS return error, sends a RAU Reject with the cause code CC#17 indicating a network failure back to the user equipment (114b). The cause code CC#17 in the RAU Reject causes the user equipment to send a new RAU Request. Thus, the user equipment is stuck in a loop of sending a RAU Request and receiving a RAU Reject. This problem is solved by the present application in that SGSN keeps track of the number of rejections when doing RAU. When the number of rejections is above a certain threshold, the SGSN will send a RAU Reject with cause code CC#10 to the user equipment (115b), whereby the cause code CC#10 indicates implicit detach of the user equipment.

Abstract: A radio receiving apparatus is notified of whether a multi-user multiplexing transmission signal that is transmitted from a radio transmitting apparatus is the multi-user MIMO or the OFDMA without increasing a control information amount. The radio transmitting apparatus includes a scheduling section 115 that selects any one group from a plural groups that represent combinations of the plural radio receiving apparatuses, and a transmit symbol generating section 125 that generates a transmit signal by multiplexing data to be transmitted to the plural radio receiving apparatuses belonging to the selected group by the multiplexing method in advance determined corresponding to an identification number added to the selected group.

Abstract: A User Equipment (UE) (20) has multiple transceivers, each having a corresponding receiver configured to communicate on respective carriers. The UE (20) monitors a radio access network (RAN) (16) on a serving cell using a first of the receivers, and indicates to the base station (80) that at least one of its receivers will temporary tune-out from the RAN (16). The base station (80) receives the indication from the UE (20), and temporarily suspends communications with the UE (20).

Abstract: A probability of collision when a plurality of mobile station devices use contention based (CB) transmission is reduced. Provided is a mobile station device which performs the CB transmission, based on a control signal received from a base station device. The mobile station device includes a control information extraction unit 105 that extracts the control signal for CB transmission from the control information; a clipping unit 107 that generates a partial spectrum by removing a portion of a spectrum, from a spectrum of a transmit signal, based on the extracted control information for CB transmission; and a transmission unit 125 that transmits a signal with the partial spectrum to the base station device.

Abstract: The present invention is designed to report parameters related to techniques provided for in the LTE-A system to a user terminal with adequate timing. The radio communication method of the present invention provides a radio communication method in a radio communication system having a base station apparatus that is configured in compliance with LTE-Advanced system standards, and a user terminal that is configured to be able to perform radio communication with the base station apparatus, and, in this radio communication method, the base station apparatus generates downlink control channel information related to an enhanced physical downlink control channel, and notifies the downlink control channel information to the user terminal using an RRC Connection Reconfiguration signal, and the user terminal receives the RRC Connection Reconfiguration signal, and sets up the downlink control channel information.

Abstract: A new base station transmits position information to a TVWSDB device and receives channel information of TV white space from the TVWSDB device. The TVWSDB apparatus instructs existing base stations to arrange that the respective CPE terminals that are the nearest in distance to the new base station perform CBP bursts for channels reported to the new base station. The CPE terminals then perform the CBP bursts according to a schedule established for the existing base stations. The new base station searches for and finds a cell having the same standard as itself on the basis of the burst signals of the CPE terminals and shares the channel of the cell having the same standard as itself with the existing base stations.

Abstract: Methods for allocating a physical downlink control channel (PDCCH) to reduce a number of PDCCH candidates in a search space for carrier aggregation on a user equipment (UE) are disclosed. The method comprises the step of selecting a control channel element (CCE) aggregation level for a PDCCH allocation for each of a plurality of user equipments (UEs) at an evolved NodeB (eNB). The operation of identifying a transmission mode for each of a plurality of component carriers (CCs) associated with the PDCCH at the eNB follows. The next operation of the method is assigning each CC's downlink control information (DCI) into CCEs in a PDCCH search space in the PDCCH starting at a CCE location based on the CC's transmission mode and the CCE aggregation level for the UE receiving the CC.

Abstract: According to one embodiment, a method for retransmitting a protocol data unit (PDU) in a mobile communication system includes: segmenting a first PDU to form one or more second PDUs if the first PDU does not fit within a PDU size indicated by a lower layer; and transmitting the one or more second PDUs to a receiving side. Segmenting the first PDU includes: mapping only a data field of the first PDU to a data field of the one or more second PDUs; and setting a header of each of the one or more second PDUs. The header of each of the one or more second PDUs includes a field indicating a sequence number of the first PDU.

Abstract: A Multi-User-Multiple Input Multiple Output (MU-MIMO) transmission method performed by an Access Point (AP) in a Wireless Local Area Network (WLAN) system is provided. The method includes transmitting an MU-MIMO initiation message to a destination Station (STA) which is a target of a MU-MIMO transmission, the MU-MIMO initiation message informing that MU-MIMO transmission will be initiated, receiving a sounding frame transmitted by the destination STA as a response to the MU-MIMO initiation message and performing MU-MIMO transmission on data by beamforming based on channel information obtained from the sounding frame. The sounding frame includes precoded and virtualized channel information between the AP and the STA. A dimension of the virtualized channel information is lower than a dimension of channel information between the AP and the STA.

Abstract: A method in one embodiment includes intercepting a message in an on-board unit (OBU) of a vehicular network environment between a source and a receiver in the vehicular network environment, verifying the message is sent from the source, verifying the message is not altered, evaluating a set of source flow control policies associated with the source, and blocking the message if the set of source flow control policies indicate the message is not permitted. In specific embodiments, the message is not permitted if a level of access assigned to the source in the set of source flow control policies does not match a level of access tagged on the message. In further embodiments, the method includes evaluating a set of receiver flow control policies associated with the receiver, and blocking the message if the set of receiver flow control policies indicates the message is not permitted.

Abstract: The present disclosure discloses a method, a device and a system for uplink resource allocation, relating to a wireless communication field and used for further reducing interference of service transmission between cell uplinks. The method for uplink resource allocation includes: a first base station determines uplink almost blank subframe (UL ABS) subframe(s) unused currently of a user equipment (UE) served by the first base station; and the first base station sends information of the determined UL ABS subframe(s) unused currently of the UE served by the first base station to a second base station, so that the second base station acquires available UL ABS subframe(s) and takes the available UL ABS subframe(s) as uplink subframe resource(s) of the second base station. The present disclosure is applied to a resource allocation scenario.

Abstract: A wireless communication system including: a wireless base station, and a wireless terminal configured to receive a downlink frame including data and a downlink control signal, the downlink control signal being mapped to a first downlink control resource element, and transmit an uplink frame including an uplink control signal, the uplink control signal being mapped to a first uplink control resource element, the first uplink control resource element being determined by shifting a second uplink control resource element of uplink control resource elements by an offset number whose unit is one of the uplink control resource elements, the second uplink control resource element being determined based on a location of the first downlink control resource element in the downlink frame, the offset number being determined based on a first offset information included in the downlink control signal.

Abstract: A method and apparatus for sending uplink control information (UCI) by a multi-mode wireless transmit/receive unit (WTRU) capable of operating on multiple component carriers of a plurality of radio access technologies (RATs) for multi-RAT operation are disclosed. The multi-mode WTRU may generate first UCI pertaining to a first RAT and second UCI pertaining to a second RAT. The WTRU may then send at least part of the first UCI and least part of the second UCI via a feedback channel on a component carrier of a second RAT. The first RAT may be Long Term Evolution (LTE) and the second RAT may be LTE-Advanced (LTE-A), or vice versa. Each RAT may operate on a different frequency. The UCI of the RATs may be multiplexed onto a carrier of any one of the RATs. The UCI bits for a pair of, or multiple, serving cells may be jointly encoded.

Abstract: A communications apparatus is provided. A controller module generates a suggested sub-frame pattern describing suggested arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and schedules control signal and/or data transmissions according to the suggested sub-frame pattern. A transceiver module transmits at least a first signal carrying information regarding the suggested sub-frame pattern to a peer communications apparatus. The peer communications apparatus does not schedule data transmissions in the almost blank sub-frame(s).

Abstract: A method for coordinating transmissions between different communications apparatuses in a communications system. The method obtains a sub-frame indicator carried in a first control signal transmitted in a control region of a first sub-frame received from an evolved node B (eNB), wherein the sub-frame indicator indicates resource allocation of one or more sub-frame following the first sub-frame. The method then determines whether a second sub-frame following the first sub-frame and received from the eNB is an almost blank sub-frame according to the sub-frame indicator. When the second sub-frame is not the almost blank sub-frame, obtaining information regarding a start position of a data region of the second sub-frame from a second control signal transmitted in a control region of the second sub-frame.

Abstract: A communications apparatus is provided. A controller module obtains information regarding a Hybrid Automatic Repeat Request (HARQ) round trip time (RTT) in an HARQ process, arranging one or more almost blank sub-frame(s) in one or more frame(s) according to the HARQ RTT information and generating a sub-frame pattern describing the arrangement of the almost blank sub-frame(s), wherein the HARQ RTT is defined by the communications system. A transceiver module transmits at least a signal carrying information regarding the sub-frame pattern to a peer communications apparatus in the communications system. In addition, at least one almost blank sub-frame in the sub-frame pattern is arranged in a sub-frame for the peer communications apparatus to transmit an uplink grant message for granting an user equipment to transmit uplink data to the peer communications apparatus.

Abstract: According to one embodiment, a user equipment for use in a mobile communication system is configured to: receive control information including a first field and a second field via a control channel, the first field indicating one of N (N?2) resource block group (RBG) sets and the second field including a bitmap, wherein each bit of the bitmap is used to indicate whether a corresponding resource block (RB) in the indicated one of the N RBG sets is allocated; interpret the first field and the second field for resource allocation in the control information; and receive data using the control information. An RBG set n (0?n<N) includes every Nth RBG starting from nth RBG, an RBG includes one or more consecutive RBs, and an RB includes a plurality of consecutive subcarriers.

Abstract: A method in a wireless terminal transceiver includes receiving a sequence of frames from a first base station, wherein each frame in the sequence contains a first set of time-frequency resources which may be used for scheduling data and a second set of time-frequency resources not used for scheduling data. The transceiver also receives a message from the first base station identifying a third set of time-frequency resources that is a subset of the first set of time-frequency resources, and estimates the channel state based on the transmission received in the third set of time-frequency resources.

Abstract: Enhanced physical downlink control channel are multiplexed with physical downlink data channel in frequency division multiplexing (FDM), or in frequency division multiplexing (FDM)+time division multiplexing (TDM). FDM mode applies to users that have only UL grants in that subframe. UL grants of different users are cross-interleaved and transmitted over the entire physical resource blocks (both slots) in FDM. Frequency resources for cross-interleaved UL grants are distributed. TDM+FDM applies to users that have both DL and UL grants, or have only DL grant in that subframe. DL/UL grant (maybe mixed) is transmitted only in the first slot of physical resource blocks in TDM+FDM, where the second slots in those resource blocks can be used for those users' downlink data transmission.

Abstract: A method for transmitting a signal by a transmitting side device, the method including combining a first sequence and a second sequence to generate a third sequence in a frequency domain. The second sequence is obtained by cyclic shifting the first sequence. The method further includes transforming the third sequence into a time domain signal; and transmitting the time domain signal to a receiving side device. The third sequence includes information to identify a cell and is periodically transmitted.

Abstract: The application relates to the removal of one of the links in multi-flow HSPA but the proposed method is also applicable to normal HSDPA operation during handover. In particular the application aims at minimizing the negative impact of a removed radio link, i.e. drop of packets and/or delays. According to the proposed method, in which the radio link to be removed is via a first Node B NB1 (RL Removal Req), the NB1 ends the pending data transmission and informs the controlling RNC about the data which was not transmitted, in particular in the form of the lowest sequence number in its buffer. Subsequently, the RNC decides, based on this sequence number, which data packets need to be retransmitted on a second radio link via a second node B NB2, and instructs NB2 accordingly (Data Forwarding).

Abstract: Techniques are described for selected internet protocol traffic offload (SIPTO) support at an assisting eNodeB. A connection may be established between a first eNodeB and a UE, and it may be determined whether a connection exists or is pending between the UE and a second eNodeB. A message may be transmitted to a mobility management entity (MME), the message associating a network address of the second eNodeB with SIPTO connectivity for the UE.

Abstract: A wireless communication system allows a handover operation to a base station communicating through a plurality of frequency bands. The mobile terminal includes a communication unit adapted to perform communication with any of the base stations through a plurality of frequency bands. The communication unit of the base station notifies, when communication through a plurality of frequency bands is possible, a mobile terminal about information directed to identifying a main frequency band from relevant frequency bands in a manner allowing discrimination from one or more frequency bands other than the main frequency band. The communication unit of the mobile terminal determines that, upon receiving information directed to identifying a main frequency band from the second base station during having communication connection with the first base station, that the frequency band identified by the relevant information is a subject of handover towards the second base station.

Abstract: A method includes determining that reporting of user equipment mobility information is to be performed. The method further includes reporting, responsive to the determining, the user equipment mobility information, the user equipment mobility information concerning at least a time period in one or both of an idle state or a connected state since a transition by the user equipment to a cell, or since a transition by the user equipment to or from a connected state with a cell, Apparatus, systems, computer programs, and computer program products are also disclosed.

Abstract: Packet data protocol (PDP) contexts are managed upon cellular-to-femto handover, wherein femto network has disparate capabilities to support applications with distinct access point names (APNs) and quality of service (QoS) profiles. Based at least on activity factors of applications associated with PDP contexts, a QoS-based ranking of PDP contexts, and subscriber input, cellular network platform selects active PDP contexts to retain and suspend upon handover. A group of active PDP contexts is handed off in accordance with femto coverage capability, with remaining active PDP contexts suspended during handover. When a suspended PDP context, and application associated therewith, is resumed through femto coverage, a PDP context modification is conducted with a new APN and the application is routed to a corresponding femto gateway node and application server. Additionally, femto network platform performs a radio access bearer reconfiguration to meet QoS requirements of the resumed PDP context.

Abstract: Methods and apparatus for storing, manipulating, retrieving, and forwarding state, e.g., context and other information, used to support communications sessions with one or more end nodes, e.g., mobile devices, are described. Various features are directed to a mobile node controlling the transfer of state from a first access node to a second access node during a handoff operation thereby eliminating any need for state transfer messages to be transmitted between the second access node and the first access node during handoff. Other features of the invention are directed to the use of a core network node to store state information. State information stored in the core node can be accessed and used by access nodes in cases where a mobile node does not send a state transfer message during a handoff, e.g., because communication with the first access node is lost or because such messages are not supported.

Abstract: The present disclosure concerns radio communication. In one of its aspects, the technology presented herein concerns a method for selecting the most suitable secondary carrier for carrier aggregation when employing a combined radio cell including multiple radio sectors A—1, A—2, A—3 of a first Cell (Cell A) and multiple radio sectors B_x, B_y, B_z of a second cell (Cell B).

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives a transmission and transmits an Ack regarding the transmission. A packet transmitting apparatus begins a transmission of a packet and receives an Ack regarding the transmission. The Ack may indicate early decoding of a packet comprised in the transmission. This enables the packet transmitting apparatus to cease transmission of the packet prior to transmission of the entire packet. The Ack may be transmitted using at least one of applying a pre-configured boost to the transmit power of at least a portion of a slot in which the Ack is transmitted, modulating a codeword pattern onto the symbols that would normally be transmitted in the slot, and transmitting the Ack on DPDCH.

Abstract: A radio base station including: a processor configured to precode a first reference signal based on a first precoding matrix and a second reference signal based on a second precoding matrix, transmit the precoded first reference signal using a first radio resource and the precoded second reference signal using a second radio resource, to a radio terminal, receive first channel state information and second channel state information from the radio terminal, the first channel state information indicating a first channel estimated at the radio terminal based on the precoded first reference signal, the second channel state information indicating a second channel estimated at the radio terminal based on the precoded second reference signal, and estimate a downlink channel between the radio base station and the radio terminal based on the first channel state information, the second channel state information, the first precoding matrix, and the second precoding matrix.

Abstract: A user equipment, UE, (300), a radio base station, RBS, (400) and a respective method (100) and (200) therein for joint transmit and receive procedure are provided. The method (100) in the UE comprises receiving (110) at a time slot n, a first transmission from the RBS, the transmission comprising a first pre-coded symbol; and estimating (120) a real channel referring to a transfer function of the channel and an effective channel referring to the real channel adjusted by transmission weights for the received first transmission. The method further comprises determining (130) a combining vector based on the effective channel, and determining (140) a feedback vector based on the combining vector and the real channel. The method comprises transmitting (150) the feedback vector to the RBS, to be used by the RBS for determining an SLNR pre-coding vector for a second transmission to the UE in a subsequent time slot.