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Method and device for storing and decoding transmission blocks of hybrid automatic repeat request

A transmission block and hybrid technology, applied in the direction of using the return channel for error prevention/detection, transmission system, digital transmission system, etc., can solve the problem of high cost, achieve the effect of reducing capacity and improving efficiency

Inactive Publication Date: 2016-02-24
MSTAR SEMICON SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, if the receiving end needs to retain the soft information of the data block that occurred in the previous decoding error, it must provide memory, and providing memory requires cost. The larger the memory capacity, the greater the cost, so how to retransmit data? Reducing the cost of memory is a problem that needs to be solved in the industry

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  • Method and device for storing and decoding transmission blocks of hybrid automatic repeat request
  • Method and device for storing and decoding transmission blocks of hybrid automatic repeat request
  • Method and device for storing and decoding transmission blocks of hybrid automatic repeat request

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Embodiment Construction

[0041]The LTE protocol defines 5 types of user equipment, and the number of soft bits that can be stored in the buffer of each type of user equipment is shown in Table 1:

[0042] Table 1 Table of the number of soft bits that can be stored in buffers of various user equipment types

[0043] User device type

Total number of soft bits (N soft )

Category1

250368

Category2

1237248

Category3

1237248

Category4

1827072

Category5

3667200

[0044] The LTE protocol specifies the size of the storage area of ​​the Hybrid Automatic Repeat Request (HARQ) buffer required for each transport block (TB) and the number of transport blocks that can be stored in the storage area. Please refer to the following formula:

[0045]

[0046] Where: N IR Indicates the size of the storage area of ​​the HARQ buffer required for each transmission; N soft is the size specified in Table 1; K MIMO Indicates the coefficient corre...

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Abstract

The invention discloses a method and device for storing and decoding a mixing-type transmission block with an automatic retransmitting request. The method includes the steps that in the transmission process of a downgoing signal, the mixing-type transmission block with the automatic retransmitting request is obtained, and the transmission block comprises at least one encoding block; encoding blocks which can not be correctly encoded are stored in a storage area of a divided buffer, and the storage area of the buffer is divided dynamically with the encoding block as an unit. According to the mode, capacity required by the buffer can be reduced, and using efficiency of the buffer is improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and a device for storing and decoding transmission blocks of a hybrid automatic repeat request. Background technique [0002] In a communication system, in order to ensure reliable data transmission, the receiving end generally checks whether the received data is complete and correct through a cyclic redundancy check code (CRC, CyclicRedundancyCheck). If there is an error in the received data, the sender needs to retransmit the data block. In order to improve the receiving performance, the receiving end will not discard the data block that had a decoding error in the previous time, but usually retains the soft information of the data block so that it can be merged with the retransmitted data block, which can improve the receiving performance. [0003] However, if the receiving end needs to retain the soft information of the data block that occurred in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/00
Inventor 傅永生
Owner MSTAR SEMICON SHANGHAI