A data transmission method and device are provided. The method includes: a first transmission node sends data signal(s) for first transmission to a second transmission node, wherein the data signal(s) including data of at least one Transmission Block (TB), the TB including K Code Blocks (CBs), and the K CBs being divided into P CB sets; the first transmission node performs packet coding on M CB sets in the P CB sets to obtain S check CB sets; and the first transmission node generates data signal(s) for retransmission and sends the data signal(s) to the second transmission node, the data signal(s) for retransmission at least including Q bits in the check CB sets when a preset condition is met. The embodiments of the present disclosure may effectively reduce resources for retransmission under the condition of not increasing an amount of feedback information.

Provided are a transmission method, apparatus and system and a computer-readable storage medium. The transmission method includes creating an automatic repeat request process for a first packet; setting a lifetime for the automatic repeat request process; and sending the first packet. The lifetime is set for the automatic repeat request process so that the automatic repeat request process can be removed in time. In this manner, in the case where a limited number of automatic repeat request processes are simultaneously supported, a new automatic repeat request process can be created for a newly transmitted packet in time, and thus the transmission efficiency is improved.

The present invention relates to a transmission time interval (TTI) bundling method in wireless access systems and to an apparatus for same. In particular, the TTI bundling method includes the following steps: a terminal receives information indicating the bundling size value from a base station; the terminal automatically re-transmits packets through a predetermined number of TTIs following four TTIs without the reception of Acknowledgement/Negative-ACK (ACK/NACK) information for the packets from the base station; the terminal receives the ACK/NACK information for the packets from the base station; and the terminal retransmits packets in a Hybrid Automatic Repeat and Request (HARQ) scheme when receiving the NACK, wherein the predetermined number of TTIs is determined according to the bundling size value.

A method of operating a signal processing apparatus (110) comprises receiving a first signal representing a received data bit, determining from the first signal a first soft data bit, storing the first soft data bit in a leaky storage device (130), receiving a second signal representing the received data bit, and determining from the second signal a second soft data bit. The stored first soft data bit is read from the leaky storage device (130), an elapsed leakage time of the stored first soft data bit is measured, and a third soft data bit is generated dependent on the stored first soft data bit read from the leaky storage device (130) and on the elapsed leakage time. A fourth soft data bit is generated by combining the second soft data bit and the third soft data bit, and the received data bit is decoded dependent on the fourth soft data bit and on a selected plurality of further received data bits.

Hybrid ARQ is employed in a multi-carrier communication system for retransmission of erroneous packets by taking advantage of time/frequency/space diversity and by combining ARQ functions at physical layer and MAC layers, making the multi-carrier system more robust in a high packet-error environment.

Methods and apparatuses for triggering HARQ-ACK feedback. A method comprising: receiving a first Downlink Control Information (DCI) from a base unit for scheduling a Downlink (DL) transmission, wherein the first DCI includes a first indicator indicating to suspend transmission of a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) feedback corresponding to the DL transmission; receiving a second DCI from the base unit for scheduling the transmission of the HARQ-ACK feedback, wherein the second DCI indicates a resource for the transmission of the HARQ-ACK feedback; and transmitting the HARQ-ACK feedback to the base unit on the resource indicated by the second DCI.

A terminal device includes: a setting unit that sets resources used to calculate a channel quality indicator; a reception unit that monitors a physical downlink control channel accompanied with information indicating an uplink-downlink configuration; a measurement unit that performs interference measurement to calculate the channel quality indicator based on the resource excluding at least the resource in an uplink subframe which is based on the uplink-downlink configuration; and transmission unit that transmits the channel quality indicator via a physical uplink shared channel. The transmission unit adjusts transmission with the physical uplink shared channel to which a physical downlink control channel accompanied with an uplink grant corresponds in subframe n+k based on detection of the physical downlink control channel accompanied with the uplink grant in subframe n. The setting unit sets a second uplink-downlink configuration. Here, k is given based on the second uplink-downlink configuration.

A method for operating a user equipment (UE) is provided. The method comprises obtaining configuration information for one or more repetitions for one or more channels of a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), or a physical uplink shared channel (PUSCH), wherein the configuration information comprises a parameter to extend a maximum number of repetitions for the one or more channels; and transmitting or receiving the one or more repetitions according to the configuration information.

A first communication device of handling communication with a second communication device comprises a storage unit for storing instructions and a processing circuit coupled to the storage unit. The processing circuit is configured to execute the instructions stored in the storage unit. The instructions comprise generating a transport block (TB); generating a first cyclic redundancy check (CRC) according to the TB; scrambling the first CRC with a first identifier to a first scrambled CRC, wherein the first identifier is known by the first and second communication devices; and performing a transmission of the TB and the first scrambled CRC on at least one first subcarrier in at least one first consecutive orthogonal frequency division multiplexing (OFDM) symbol, to the second communication device.

The present invention relates to a method for configuring a retransmission protocol on the uplink between a network node and a relay node in a mobile communication system, the configuration being performed at a network node or at a relay node, and to the corresponding relay node apparatus and network node apparatus capable of configuring the retransmission protocol. In particular, the number of transmission processes is determined based on the position of time intervals available for the transmission and may be selected in order to control the round trip time of the retransmission protocol. Once the number of transmission processes has been configured, the transmission processes are mapped on the available time intervals in a predefined order and repetitively.