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Regulation method of SIR special used for physical control channel DPCCH

A control channel and dedicated physical technology, applied in the field of wireless communication, can solve problems such as the downlink rate cannot be increased, HSDPA retransmissions are many, and the real reflection cannot be reflected.

Active Publication Date: 2007-05-23
XFUSION DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, this adjustment method only determines the SIR target value of the physical channel DPDCH according to the service type of the dedicated channel, thereby adjusting the SIR of the DPCCH. It is not sufficient to use the SIR obtained by the adjustment method as the SIR required by the entire physical channel. It cannot truly reflect the SIR on the HS-DPCCH channel, which will cause the quality of the dedicated channel to meet the service quality requirements, while the bit error rate of ACK or NACK fails to meet the requirements, resulting in more HSDPA retransmissions, and the downlink rate cannot be increased.

Method used

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  • Regulation method of SIR special used for physical control channel DPCCH
  • Regulation method of SIR special used for physical control channel DPCCH
  • Regulation method of SIR special used for physical control channel DPCCH

Examples

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Embodiment 1

[0065] FIG. 5 is a schematic flowchart of the method described in this embodiment. In this embodiment, the ratio of the number of ACK indications to the number of DTX indications is selected as the signal transmission efficiency parameter. For the selected parameter object, the specific implementation steps of this method are as follows:

[0066] Step S501: Setting a threshold.

[0067] The setting of this threshold is specifically set according to the actual requirements of the user service type, and specifically reflects the minimum requirement of the user service type on the signal transmission efficiency of the channel. Specifically, in this embodiment, the threshold is the number of ACK indications and the number of DTX indications of the user service type. The minimum value required for the proportion value of , for example, the user service type requires a minimum value of 90 for the ratio of the number of ACK indications to the number of DTX indications, then the thres...

Embodiment 2

[0080] The difference between this embodiment and Embodiment 1 is that this embodiment selects the ratio of the number of ACK indications to the number of NACK indications as the signal transmission efficiency parameter. As shown in Figure 6, it is a schematic flow chart of the method described in this embodiment, and the method described in this embodiment includes the following steps:

[0081] Step S601: Setting a threshold.

[0082] The setting method of the threshold is the same as that in Embodiment 1, and is set according to the requirements of user services. For services with low downlink rate requirements, the set threshold can be lower. For services that require a higher downlink rate, the set threshold is required to be higher. The threshold in this embodiment is specifically the minimum value required by the user service type for the ratio of the number of ACK indications to the number of NACK indications, that is, the lower limit value.

[0083] Step S602: Node B...

Embodiment 3

[0091] Fig. 7 is a schematic flowchart of the method described in this embodiment. Since the object referred to in Embodiment 1 is only the ratio of the number of ACK indications to the number of DTX indications, it reflects the number of ACK indications counted relative to the number of DTX indications within a period of time. However, the reference object selected in Embodiment 2 is the ratio of the number of received ACK indications to the number of NACK indications, which reflects the number of ACK indications counted relative to the number of NACK indications within a period of time. However, in the HSDPA channel, both the DTX indication and the NACK indication lead to hybrid automatic retransmission of the signal, so Embodiment 1 and Embodiment 2 can only partially reflect the number of ACK indications relative to the number of hybrid retransmissions, and partially reflect the transmission efficiency of the signal , which fails to reflect the signal transmission efficien...

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Abstract

The invention relates to a signal-noise ratio adjusting method of special physical control channel DPCCH, wherein it comprises that: selecting signal transmission efficiency factor of signal channel, to set threshold; obtaining said parameters; comparing the parameters with threshold, if the parameter do not meet threshold, obtaining SIR target value from RNC; then based on refreshed SIR target value, adjusting the SIR of special physical control signal channel. The invention leads in signal transmission efficiency factor in SIR adjustment as adjustment reference, to represent SIR of HS-DPCCH channel, to make SIR meet special channel quality and the demand of transmission efficiency, to avoid repeated transmissions.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a signal-to-interference ratio adjustment method of a dedicated physical control channel DPCCH. Background technique [0002] High Speed ​​Downlink Packet Access (HSDPA) is an important feature of the fifth version of WCDMA technology. Through a series of key technologies such as Adaptive Modulation and Coding (AMC), Hybrid Retransmission (HARQ), and fast scheduling of base stations, the downlink is realized. High speed data transfer. [0003] In the wideband code division multiple access (WCDMA) system, due to the introduction of HSDPA, three channels have been added, namely: the high-speed physical downlink shared channel (HS-PDSCH) for transmitting data information in the downlink, and the high-speed physical downlink shared channel (HS-PDSCH) for transmitting downlink High-speed shared control channel (HS-SCCH) for control information and high-speed dedicated physical c...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04L1/16
Inventor 周意成
Owner XFUSION DIGITAL TECH CO LTD
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