data communication method

Abstract

The present invention relates to a data communication method. The method comprises: a sender sequentially judges whether each data area flag is empty, and records the index identifier of the data area whose first data area flag is empty; according to the index identifier , sending the OFDM symbol data to the data region where the data region flag is empty; the receiver extracts the OFDM symbol data, and receives the control format indication CFI of the next subframe sent by the base station; when the CFI is valid, Judging whether the sequence number of the smallest OFDM symbol data is smaller than the CFI, if yes, extracting the OFDM symbol data with the smallest sequence number. The data communication method provided by this application satisfies the minimum requirement of PDSCH channel processing delay in the next subframe by enabling the bit-level processing unit to detect and preferentially extract the PCFICH and PDCCH symbols of the next subframe for processing. Moreover, the symbol-level processing unit can detect the hole existing in the data communication area and write the data to be transmitted into the hole.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a data communication method. Background technique [0002] Due to the characteristics of wide bandwidth and large data throughput, the Long Term Evolution (LTE) system requires terminal baseband chips to have stronger processing capabilities and data communication capabilities, so terminal baseband chips will use multiple processing units to work simultaneously In this way, pipeline parallel processing is performed on the uplink and downlink. In addition, the LTE system has high real-time requirements and has strict restrictions on the processing delay of the uplink and downlink. Therefore, in terms of physical layer scheduling of the terminal baseband chip, it is necessary to consider reducing the processing delay as much as possible to ensure the real-time performance of the system. Require. [0003] Based on the above-mentioned strict requirements of LTE ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, data communication between symbol-level and bit-level processing units often adopts a first-in-first-out (FIFO) data structure, and bit-level processing units can only write data in the FIFO according to symbol-level processing units. The OFDM symbols are processed one by one in order. Due to the delay of bit-level processing, when the symbol-level processing completes writing the PCFICH and PDCCH symbols of the next subframe, there may still be unread bits in the FIFO of the current subframe bit-level processing. PDSCH symbols, but the bit-level processing unit can only process the PCFICH and PDCCH symbols of the next subframe after processing the PDSCH symbols of the current subframe written first, and it is impossible to preferentially extract the PCFICH and PDCCH channel symbols of the next subframe For processing, the minimization of the PDSCH channel processing delay in the next subframe cannot be guaranteed

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