42results about How to "Implement retransmission" patented technology

Provided are a channel transmission method and device, a network side device and a terminal, the method comprising: sending a PDCCH to a first terminal, the CRC of the DCI of the PDCCH being scrambledby a first RNTI of the first terminal, and the initialization value of a scrambling sequence generator of a PDSCH scheduled by the PDCCH being determined by a second RNTI or a third parameter; wherein the second RNTI or the third parameter is different from the first RNTI, and the second RNTI or the third parameter is a shared parameter of the first terminal and at least one other terminal; according to the embodiment of the invention, different terminals independently detect respective PDCCHs, and different PDCCHs schedule the same PDSCH resource, so that each terminal can use the PUCCH resource indicated by the respective PDCCH to feed back while the plurality of terminals detect the same physical resource together.

A method for monitoring, sending paging, and paging a terminal, a base station, and a terminal; the method for monitoring paging includes: the terminal generates first paging monitoring identification information; the terminal generates the first paging monitoring identification information according to the first paging monitoring identification information Determine the paging superframe that the terminal needs to monitor, and monitor paging on the paging superframe.

The present invention provides a channel transmission method, device, network side equipment and terminal, the method comprising: sending a PDCCH to a first terminal, the CRC of the DCI of the PDCCH is scrambled by the first RNTI of the first terminal, the The initialization value of the scrambling sequence generator of the PDSCH scheduled by PDCCH is determined by the second RNTI or the third parameter; wherein, the second RNTI or the third parameter is different from the first RNTI, and the second RNTI or the The third parameter is the shared parameter of the first terminal and at least one other terminal; in the embodiment of the present invention, different terminals independently detect their own PDCCHs, and different PDCCHs schedule the same PDSCH resources, so that multiple terminals can jointly While detecting the same physical resource, each terminal can also use the PUCCH resource indicated by its own PDCCH to perform feedback.

The invention discloses upstream and downstream data retransmitting methods and systems, and in the downstream data retransmitting method, a mapping relationship between an upstream physical frame and a downstream physical frame group is preliminarily configured; wherein, each downstream physical frame group comprises three adjacent downstream physical frames, and each downstream transmission block is equally divided into three downstream physical frame groups; a base station sends one or more data sub-packages to one or more terminals by using the downstream physical frame group of the downstream transmission blocks; the terminal demodulates the received data sub-packages of the downstream physical frame group; according to the demodulating result and the mapping relationship, the terminal sends a response message that represents whether the data sub-package demodulation succeeds by using the corresponding upstream physical frame of upstream transmission blocks after the downstream transmission blocks; the base station demodulates the response message and judges whether the data sub-package demodulation succeeds according to the response message, and for the downstream physical frame group with failed data sub-package demodulation, the base station sends a retransmitting data sub-package of the data sub-package with failed demodulation in the next corresponding downstream physical frame group of the downstream transmission blocks.

The invention discloses a data transmission method and system based on an OFDMA mode. The method includes: sequentially transmitting data packets to be retransmitted corresponding to I frames, P frames, and B frames, so as to realize the retransmission of data packets that have not been successfully transmitted. Transmission, the importance of I-frame data packets, P-frame data packets, and B-frame data packets decreases successively, and their priorities also decrease successively. The present invention transmits important data types (I-frame data) first by transmitting according to the importance of data types. packet), and then transmit the less important data types in turn, which improves the data transmission quality of the network system, and at the same time classifies and allocates and transmits data resources, which also improves the data transmission efficiency of the system.