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Method and device for detecting ACK/NACK information in high-speed packet access

Inactive Publication Date: 2008-12-03
TD TECH COMM TECH LTD
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Problems solved by technology

[0005] At present, there is no clear detection method, so that the NodeB can determine whether the information returned by the UE is ACK, NACK or empty information when receiving the information returned by the UE.

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  • Method and device for detecting ACK/NACK information in high-speed packet access
  • Method and device for detecting ACK/NACK information in high-speed packet access
  • Method and device for detecting ACK/NACK information in high-speed packet access

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Embodiment Construction

[0053] In the present invention, the NodeB determines whether the UE returns ACK, NACK, or empty information by comparing the ACK / NACK signal value with two threshold values ​​B1 and B2.

[0054] Below, in conjunction with embodiment 1, the method of the present invention is described in further detail, figure 1 It is the method flowchart of embodiment 1.

[0055] In step 101, the calculation relationship required for calculating the two threshold values ​​is set, and B1 and B2 are respectively used to denote the two threshold values. Wherein, B1≥0≥B2, and B2=-B1.

[0056] The process of calculating the threshold values ​​B1 and B2 is as follows figure 2 shown, including:

[0057] Step 201, establishing a mathematical model. In the present invention, it is considered that the NodeB performs joint detection and demodulation on the received signal, and the signal obtained after demodulation is composed of two parts, the signal sent by the UE and the noise superimposed on th...

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Abstract

The invention provides a method for detecting ACK / NACK information in a high-speed packet access (HSDPA), which includes the following steps: a NodeB receives an HS-SICH signal transmitted by UE and acquires the value of an ACK / NACK domain from the demodulation result of the signal; a first threshold value B1 and a second threshold value B2 are calculated according to the preset calculation relationship; the value of the ACK / NACK domain is compared with the first threshold value B1 and the second threshold value B2, the information fed back by the UE is determined according to the comparison result. The invention also provides a device for detecting the ACK / NACK information in the high-speed packet access (HSDPA).

Description

technical field [0001] The present invention relates to the technical field of High Speed ​​Downlink Package Access (HSDPA, High Speed ​​Downlink Package Access), in particular to a method and device for detecting ACK / NACK information in HSDPA. Background technique [0002] In order to meet the growing demand of multimedia services for high-speed data transmission, and to improve the user's peak data transmission rate and system throughput, the third-generation mobile communication system introduces HSDPA technology. HSDPA introduces a high-speed downlink physical channel (HS-PDSCH, High Speed ​​Physical Downlink Shared Channel), respectively introduces a shared channel in the uplink and downlink of the physical layer, that is, the shared information channel (HS-SICH, Shared Information Channel for HS-DSCH) and The shared control channel (HS-SCCH) directly and quickly completes the information exchange between the user equipment (UE, User Equipment) and the base station (Nod...

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Application Information

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IPC IPC(8): H04L12/56H04L1/00H04L1/16
Inventor 魏立梅佟学俭杨小倩
Owner TD TECH COMM TECH LTD
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