Huawei Technologies Co., Limited

Nokia Technologies Oy

Shuju Fan

Zheng Liu

Xueli Ma

Zongjie Wang

Jing Li

Xiaolei Tie

Meng Hua

Yongqiang Gao

Jing Tian Li

Kun Yan

Xiaoxiao Zheng

Carmela Cozzo

Shurong Jiao

Gengshi Wu

A method and apparatus for encoding feedback signal is provided. The method includes: encoding feedback signals of three carriers to output a bit sequence; and transmitting the bit sequence on a High Speed-Dedicated Physical Control Channel (HS-DPCCH). The encoding the feedback signals of the three carriers may specifically include: mapping the feedback signals of the three carriers into a codeword, in which the codeword can be selected from a codebook, and codewords in the codebook satisfy a particular code distance relationship. The method for jointly encoding feedback signals of three carriers in a Ternary Cell (TC) mode is provided. Feedback signals are transmitted over a single code channel. Therefore, power overhead is reduced, and system performance is improved.

Method and apparatus for encoding feedback signal

Embodiments of the present invention disclose a control information indication method and apparatus, and relate to the field of communications technologies. The method includes: sending at least one piece of control information carried in a first serving cell to a user equipment UE, where the control information includes a cell identity (CID), so that the UE parses an information field of the control information to acquire the CID, determines, according to the CID, a serving cell to which data corresponding to the control information belongs, and performs demodulation and decoding on the data in the serving cell by using the control information.

Control information indication method and apparatus

A method and an apparatus for transmitting and processing user equipment feedback information are disclosed by the present invention, related to the field of radio communication technologies, and with the present invention, a user equipment is capable of transmitting feedback information with a maximum channel RI value of 4. The method includes: obtaining rank information (RI) of a radio channel, a corresponding channel quality indication information (CQI) value, and a precoding control information (PCI) value, where an RI value is any one of 1, 2, 3, and 4; and generating feedback information according to the CQI value and the PCI value, and sending the feedback information to a base station according to a CQI feedback pattern. Embodiments of the present invention are mainly applicable to a process of transmitting user equipment feedback information.

Method and apparatus for transmitting and processing user equipment feedback information

Embodiments of the present invention disclose a pilot signal transmitting method, and a channel estimation method, an apparatus, and a system. The method includes: within a transmission time interval (TTI), transmitting a first pilot signal (CPICH) on a first antenna, and transmitting a second pilot signal (CPICH) on a second antenna; when no first-type terminal is scheduled within coverage of a MIMO system within the TTI, transmitting a third pilot signal (CPICH) on a third antenna, and transmitting a fourth pilot signal (CPICH) on a fourth antenna; and when a first-type terminal is scheduled within the coverage of the MIMO system within the TTI, transmitting the CPICHand a fifth pilot signal (CPICH) on the third antenna, and transmitting the CPICHand a sixth pilot signal (CPICH) on the fourth antenna. By using the method, interference of a pilot signal to a legacy terminal can be greatly reduced.

Pilot signal transmitting method, and channel estimation method, apparatus, and system

A method, a user equipment and a base station are provided. The method is for transmitting Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) information in a communication system in which two carriers are configured, which includes: a user equipment encodes a codeword of the two carriers. The codeword represents encoded HARQ-ACK information of a first carrier and a second carrier according to a specific encoding scheme of dual-carrier configured with Multiple-Input Multiple-Output (DC-MIMO). The user equipment then transmits the encoded codeword of the two carriers to a base station. Therefore, bit error ratio (BER) and detection error cost are decreased, power overhead is saved, and a cubic metric (CM) value of the system is not affected, thereby enhancing the performance of the system.

Signal encoding method and device, method for encoding joint feedback signal

A method, a user equipment, and a base station device for transmitting indication information. A method comprises: initially setting an indication information feedback mode of a user equipment to a deactivation state, where the user equipment in the deactivation state does not transmit indication information to a base station; after receiving an indication information feedback request transmitted by a network side, setting the indication information feedback mode of the user equipment to an activation state, where the user equipment in the activation state uses an indication information feedback cycle to transmit the indication information to the base station. Embodiments of the present disclosure initially set a user equipment to a deactivation state of not transmitting indication information to the base station, set a user equipment to an activation state of transmitting indication information when a network side has transmitted an indication information feedback request, reducing unnecessary uplink indication information feedback.

Method, user equipment and base station device for transmitting indication information

The present invention discloses a data retransmission method, apparatus, and system, and relates to the field of communications. In a data retransmission method, a special codeword is determined according to a difference between a number of layers selected by a transmitter and the number of layers that need to be occupied for retransmitting a codeword. The number of layers that need to be occupied by the codeword to be retransmitted is smaller than the number of layers selected by the transmitter and no new data needs to be transmitted and wherein the number of transport blocks comprised in the special codeword is equal to the difference. The codeword that needs to be retransmitted and the special codeword are allocated to each transport layer through a layer mapping.

Data retransmission method, apparatus, and system

A method for transmitting data streams in a multiple input multiple output (MIMO) system is provided, where each data stream is mapped to multiple layers in an MIMO channel space for transmission, and the method includes: performing inter-layer interleaving for N data streams to obtain N interleaved data streams; mapping the N interleaved data streams respectively to N layers in the MIMO channel space, and transmitting the N interleaved data streams that are mapped to the N layers. By using the method of the present invention, a combined CQI can be used in a better way to improve MIMO transmission performance. Further, an impact of inter-layer interference is canceled by using an interference cancellation technology (for example, an SIC technology) based on the inter-layer interleaving.

Method and apparatus for transmitting data streams in MIMO system

Embodiments of the present invention provide a data retransmission method and user equipment, where the method includes: if a network indicates switching from a dual stream transmission mode to a single stream transmission mode, stopping data transmission of one data stream and clearing data in an HARQ process of the stopped data stream; or if a network indicates switching from a single stream transmission mode to a dual stream transmission mode, transmitting retransmission data in an HARQ process of the original data stream without changing the HARQ process number, and transmitting new data in the HARQ process of a new data stream; or using the retransmission data of the original data stream as new data to transmit in the HARQ process of either the original data stream or new data stream.

Data retransmission method and user equipment

A signal encoding method and device and a method for encoding a joint feedback signal are provided. When two carriers are configured with multiple-input and multiple-output (MIMO), Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) signals of the two carriers are combined into a joint feedback signal. The joint feedback signal is mapped into a codeword according to predetermined mapping relationship between signals and codewords. Therefore, through the method for combining and encoding feedback signals of two carriers for transmission on a code channel in a dual cell (DC)-MIMO mode, bit error ratio (BER) and detection error cost are decreased, power overhead is saved, and a cubic metric (CM) value of the system is not affected, thereby enhancing the performance of the system.

The present invention discloses a method and a communication device for assigning a scheduling grant. The method for assigning a scheduling grant includes: receiving a grant value, an E-TFCI offset value, and a data stream identifier corresponding to the E-TFCI offset value, where the E-TFCI offset value is determined by the Node B according to data transmitted by a mobile terminal through two data streams; determining, according to the grant value, a transport block size of the data stream identified by the data stream identifier in a current TTI; and determining a transport block size of the other data stream in the current TTI according to the transport block size and the E-TFCI offset value. in the embodiments of the present invention the MIMO technology may be applied to the HSUPA technology.

Method and communication device for assigning scheduling grant

A signal encoding method and device and a method for encoding a joint feedback signal are provided. The signal encoding method includes the following steps. When two carriers are configured with multiple-input and multiple-output (MIMO), Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) signals of the two carriers are combined into a joint feedback signal. The joint feedback signal is mapped into a codeword according to predetermined mapping relationship between signals and codewords. Therefore, through the method for combining and encoding feedback signals of two carriers for transmission on a code channel in a dual cell (DC)-MIMO mode, bit error ratio (BER) and detection error cost are decreased, power overhead is saved, and a cubic metric (CM) value of the system is not affected, thereby enhancing the performance of the system.

Embodiments of the present invention provide an information transmission method and apparatus. The method includes: encoding an information bit sequence corresponding to data stream control information and Precoding Control Indication (PCI) information to obtain a code sequence; and sending the code sequence to a NodeB by carrying the code sequence on a Physical Uplink Control Channel (PUCCH). With the present invention, a User Equipment (UE) in a macro diversity state feeds back PCI information to the NodeB of the non-serving cell in time.

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Shanghai, China

Shuju Fan