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Device and method for PHICH resource blind detection in SIB1 decoding in TD-LTE system

A blind detection and decoding technology, applied in the field of communication, can solve problems such as long calculation delay and large calculation amount, and achieve the effect of reducing the number of blind detection times

Active Publication Date: 2014-05-07
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

For the decoding of SIB1, according to the 3GPP protocol, SI-RNTI is used for scrambling, and the PDCCH is in the common search space, so different m i value, it is necessary to perform 6 candidate blind detections from the solution resource mapping to the CRC check, and it is possible to go through 18 DCI blind detection calculations at most. It can be seen that the calculation amount is large and the calculation delay is long

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  • Device and method for PHICH resource blind detection in SIB1 decoding in TD-LTE system
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  • Device and method for PHICH resource blind detection in SIB1 decoding in TD-LTE system

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Embodiment Construction

[0030] Such as figure 2 As shown, a PHICH resource blind detection device in SIB1 decoding in a TD-LTE system includes a parallel decoding module 1, a DCI information correlation module 2, a correlation value sorting module 3, a blind decoding module 4 and PDCSCH channel decoding Module 5, the decoding module 1 is used to perform PDCCH decoding to descrambling on different PHICH resources, the decoding module 1 is connected to the DCI related module 2, and transmits the obtained decoded data to the DCI related module 2, which is used by the DCI related module 2 Correlation calculations are performed on the decoded data to obtain correlation values, and the DCI correlation module 2 is connected to the correlation value sorting module 3 to transmit the obtained correlation values ​​to the correlation value sorting module 3, and the correlation value sorting module 3 sorts the correlation values, and the correlation value sorting Module 3 is connected to the blind decoding modul...

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Abstract

The invention discloses a device and a method for PHICH resource blind detection in SIB1 decoding in a TD-LTE system. The device comprises a parallel decoding module, a DCI information correlation module, a correlation value sorting module, a blind decoding module and a PDCSCH channel decoding module. According to the detection method, parallel processing is adopted both in PDCCH decoding and DCI format blind detection on three different kinds of PHICH resources, which greatly improves the processing efficiency; and the possibility of each candidate set is evaluated through the DCI information correlation module with the use of correlation generated by repeated coding during DCI rate matching, and blind detection is carried out only on the two candidate sets with the highest possibility, thus greatly accelerating the speed of blind detection.

Description

technical field [0001] The invention relates to the communication field, in particular to a device and method for blind detection of PHICH resources in SIB1 decoding in a TD-LTE system. Background technique [0002] In the TD-LTE system, the terminal uses the synchronization process of the synchronization signal PSS / SSS to obtain information such as subframe synchronization, CP type, and cell ID. Then, by receiving the PBCH channel, the system bandwidth, frame number and related resource configuration of PHICH are obtained, mainly including PHICH-Duration and Ng, so that it can be calculated However, the final group number of PHICH is It can be seen that the parameter m is also involved i , which depends on the uplink and downlink configuration, and the uplink and downlink configuration parameters are included in system information 1 (SIB1), so the number of PHICH channel resource groups is unknown before SIB1 is correctly decoded. The SIB1 information is included in th...

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Application Information

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IPC IPC(8): H04L1/00
Inventor 王丹邓雪梅李小文陈发堂王华华刘宇
Owner CHONGQING UNIV OF POSTS & TELECOMM
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