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Method and apparatus for ACK/NACK information decoding by E-HICH channel

A 1.E-HICH, 5.E-HICH technology, applied in the field of E-HICH channel ACK/NACK information decoding, can solve problems such as inability to decode ACK/NACK information, achieve accurate judgment, simple operation process, and easy implementation Effect

Active Publication Date: 2012-10-24
RDA CHONGQING MICROELECTRONICS TECH CO LTD
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Problems solved by technology

[0014] In view of this, the present invention provides a method and device for decoding E-HICH channel ACK / NACK information to solve the problem that the above-mentioned E-HICH cannot be decoded to obtain ACK / NACK information at the receiving end

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  • Method and apparatus for ACK/NACK information decoding by E-HICH channel
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  • Method and apparatus for ACK/NACK information decoding by E-HICH channel

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Embodiment Construction

[0047] In order to clearly illustrate the solutions in the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings.

[0048] see figure 2 , figure 2 is a flowchart of a method embodiment, including:

[0049] Step 201: Obtain the soft information sequence of each received frame and perform a correlation operation with the bipolar conversion sequence of the corresponding spreading sequence;

[0050] Perform dedumb bit processing on the data received by the UE after joint detection, de-physical channel mapping, and de-scrambling to obtain an 80-bit long soft information sequence s;

[0051] Determine the extension sequence C used by E-HICH coding according to the length of the soft information sequence 80，r′，n ;

[0052] Convert the spreading sequence to bipolar. Since s is a bipolar sequence, it is necessary to set C 80，r′，n For bipolar processing, let c be C 80，r′，n The bipolar conversion ...

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Abstract

The invention discloses a method of decoding ACK / NACK information of an E-HICH communication channel and a device, the method of the invention comprises the following steps: obtaining soft information sequences of each of received frames and carrying out related calculation with a bipolar convert sequence of a corresponding extended sequence, judging related results according to a predetermined fixed judgment threshold in a predetermined period, and counting the quantity of the obtained ACK and NACK information, calculating a posterior judgment threshold according to the counted out information quantity, judging the related calculating results through adopting the posterior judgment threshold, and then judging the ACK and NACK information and decoding. The device of the invention comprises an extended sequence generating module, a bipolar conversion module, a related computation module, a threshold calculation module and a judgment output module. The invention judges the quantity of the received ACK / NACK, and calculating the posterior judgment threshold according to the counted out information quantity, and the invention has the advantages of dynamic updating, accurate judgment, and simple calculating process and easy to realize.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for decoding E-HICH channel ACK / NACK information. Background technique [0002] 3GPP introduced the HSUPA technology corresponding to HSDPA in the Release6 standard. The introduction of this technology enables the 3G system to better support high-speed data services such as interactive games and multimedia IP. The TD-SCDMA system will also gradually complete the upgrade of HSPA (HSDPA+HSUPA) functions. [0003] TD-HSUPA adopts key technologies such as HARQ, Node B-based fast scheduling, QPSK and 16QAM adaptive modulation to support high-speed uplink data services. [0004] In order to realize the HARQ process, TD-HSUPA introduces several channels: the downlink channel E-AGCH (E-DCH Absolute Grant Channel, E-DCH Absolute Assignment Channel) is used to allocate E-DCH power, time slots, code channels and other resources ; The uplink channel E-DC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/16
Inventor 陈鑫沈静王茜竹申敏
Owner RDA CHONGQING MICROELECTRONICS TECH CO LTD
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