Huawei Technologies Co., Limited

Weijun Sun

Yongxing Zhou

Qiang Wu

Branislav M Popovic

Pablo Soldati

Mattias Frenne

Kunpeng Liu

Fredrik Berggren

Bingyu Qu

Lei Wan

Yang Li

Jianghua Liu

Hui Zhang

Leiming Zhang

Mingyu Zhou

Yunzhe Hou

Zhenwei Lu

The present disclosure provides a solution which solves the problem of demodulation reference signal (DMRS) ambiguity by introducing separate, i.e. different DMRSs. This is especially the case for systems employing dynamic allocation of control and data signals to different PRBs.

Generating and transmitting demodulation reference signals

The present disclosure provides a data packet transmission method and a device. The method includes: performing, by a transmit end device, channel coding on a to-be-sent data packet, and dividing the coded data packet into at least two data sub-packets; allocating a transmission resource to each data sub-packet; generating control information for each data sub-packet according to transmission resources of the at least two data sub-packets; and sending each data sub-packet and the control information of the data sub-packet on a corresponding transmission resource. A data packet and control information indicating a transmission resource of a data sub-packet are transmitted simultaneously, so that a receive end device can recognize multiple transmissions of a same data packet, and perform joint processing on multiple data sub-packets corresponding to the same data packet to obtain the sent data packet, and data packet transmission reliability is improved.

Data packet transmission method and device

Methods and nodes for transmission of downlink control channel signals in a downlink frequency carrier of a wireless communication system, wherein at least two PRB pairs, configurable for the transmission of a downlink control channel have different numbers of time-frequency resource elements available for the transmission of said downlink control channel. The method comprises allocating at least one set S of PRB pairs; arranging time-frequency resource elements from said set S into an aggregation comprising at least one level; determining a set LS of aggregation levels supported for the transmission of a downlink control channel within the allocated set of PRB pairs, based on the number of time-frequency resource elements available for the transmission of a downlink control channel in PRB pairs of the set S; and transmitting the downlink control channel within said set S of PRB pairs.

Methods and nodes in a wireless communication system

Embodiments provide a method for sending a signal by user equipment and user equipment. The method includes: within an obtained channel detection cycle, detecting a first interference strength within system bandwidth and a second interference strength on each sub-band within the system bandwidth; comparing the first interference strength with a first interference threshold; if the first interference strength is less than the first interference threshold, selecting, from the system bandwidth according to the second interference strength on each sub-band within the system bandwidth, N first sub-bands that receive relatively small interference; and sending a signal on the N first sub-bands. In consideration of interference within the entire bandwidth and interference to each sub-band, when interference to the entire system is relatively small, a transmission collision is avoided. In addition, selecting sub-bands that receive small interference for signal transmission further reduces transmission interference, thereby effectively improving data transmission reliability.

User equipment sending signal directly to user equipment

Methods () and nodes () for transmission of broadcast information, over at least one antenna port, in a subframe, which transmission is received by a receiver () in a wireless communication system (). The broadcast information is transmitted over a set of antenna ports comprising at least one antenna port, in at least one subframe () comprising a set of time-frequency resources, wherein a cell-specific reference signal, CRS, is not transmitted in each subframe (). The method () comprises defining () a set of antenna ports for the set of time-frequency resources. Also, the method () comprises transmitting () the broadcast information on the defined () set of antenna ports, thereby using said set of time-frequency resources exclusively, such that they are unused for any other antenna port.

Embodiments of the present invention provide a method for feeding back a channel quality indicator, and a method and an apparatus for sending resource scheduling information. An apparatus for feeding back a channel quality indicator includes: a determining module, configured to determine a feedback granularity of a CQI according to a system bandwidth, a CQI feedback mode, and antenna port quantity information specified by a network device; and a feedback module, configured to feed back the CQI to the network device according to the feedback granularity of the CQI. The method for feeding back a channel quality indicator, and the method and the apparatus for sending resource scheduling information provided in the embodiments of the present invention are used to reduce system overheads.

Method for feeding back channel quality indicator, and method and apparatus for sending resource scheduling information

The present invention relates to a method and apparatus for controlling network access points in a wireless communicating system, said system comprising: one or more mobile stations, and one or more access points, each access point being arranged for operating in active mode or in inactive mode; said method comprising the steps of: transmitting, by a mobile station, a sensing signal indicating network and/or mobile station specific information associated with at least one mobile station of said system; receiving, by at least one access point or at least one control unit, said sensing signal; and controlling, by said access point or said control unit, transition from active mode to inactive mode, and vice versa, of one or more access points of said system based on said sensing signal.

Method for controlling network access points

Methods and apparatus are provided for transmitting channel quality information. User equipment receives a control signaling for uplink scheduling. The control signaling for uplink scheduling includes at least one modulation and coding scheme (MCS) field, a channel quality information request field, and a resource block allocation field indicating the number of resource blocks (RBs), N, allocated to the user equipment for transmitting the channel quality information. When the channel quality information of multiple downlink carriers is requested, the user equipment transmits only the channel quality information on the uplink shared channel according to the allocated RBs if: the MCS bit field corresponding to one transport block indicates a MCS corresponding to a retransmitted data packet; the request bit field indicates a request for the channel quality information; and the Nis equal to or less than 4*N, wherein N is a positive integer and corresponds to the number of multiple downlink carriers.

Method, base station and user equipment for transmitting channel quality information

The present disclosure discloses a method and an apparatus for resource mapping and code division multiplexing. In the present disclosure, each cell selects a mapping scheme among at least two mapping schemes to implement resource mapping, which effectively reduces interference imposed on reference signal symbols of users at the edge of a cell; vector switching is performed for an orthogonal matrix to obtain multiple different codeword sequences and implement codeword design, so that a problem that the output power of reference signal symbols is unbalanced can be effectively alleviated.

Method and apparatus for resource mapping and code division multiplexing

A method for generating a codebook and a method and an apparatus for data transmission are provided. The method includes: receiving a label of a codeword sent by a User Equipment (UE); selecting the codeword identified by the label from the codebook for eight-antenna; and coding data to be sent by using the codeword. The codebook for eight-antenna includes at least one rank-8 codeword for eight-antenna. The rank-8 codeword for eight-antenna is generated by multiplying an inverse matrix of a rotation matrix for eight-antenna with an eight-dimensional matrix formed by rank-4 codewords for four-antenna; or generated by extending rank-4 codewords for eight-antenna, where the rank-4 codeword for eight-antenna is generated according to codewords for four-antenna. Therefore, the codeword in the codebook for eight-antenna is applicable to scenarios including dual-polarization strong correlation, dual-polarization weak correlation, single-polarization strong correlation, and single-polarization weak correlation, etc.

Method for generating codebook, method and apparatus for data transmission

Methods and apparatus are provided for transmitting channel quality information. User equipment receives a control signaling for uplink scheduling. The control signaling for uplink scheduling includes at least one modulation and coding scheme (MCS) field, a channel quality information request field, and a resource block allocation field indicating the number of resource blocks (RBs), N, allocated to the user equipment for transmitting the channel quality information. When the channel quality information of multiple downlink carriers is requested, the user equipment transmits only the channel quality information on the uplink shared channel according to the allocated RBs to the base station if: the MCS bit field corresponding to one transport block indicates a MCS corresponding to a retransmitted data packet; the request bit field indicates a request for the channel quality information; and the Nis equal to or less than a threshold which is related to the number of the downlink carriers and a maximum number of RBs which can be allocated for transmitting only the channel quality of one downlink carrier.

Methods and nodes, for communication of a receiver-specific control channel signal within a wireless communication system, to be received by a receiver, wherein receiver-specific downlink control channel signals are scheduled for transmission over sets of Physical Resource Block pairs.

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Beijing, China

Weijun Sun