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Out-ring power control method for upline enhancement special channel

A technology for outer loop power control and enhancement of dedicated channels, applied in the direction of transmission control/equalization, etc., can solve the problems of narrowing the SIRtarget difference, the receiving quality of another channel cannot meet the requirements, and the SIRtarget difference is large, etc., to reduce the effect of uplink interference.

Inactive Publication Date: 2006-02-15
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The difference from Rel99 is that E-DCH and DCH cannot reduce the difference of SIR target through non-uniform rate matching, so the difference of SIR target may be relatively large
If the SIR target is set according to the reception quality and QoS requirements of one channel, the reception quality of the other channel may not meet the requirements
Or if the SIR target is set according to the service with a higher SIR target according to the principle of Rel99, it may cause another channel that requires a lower SIR target to transmit with unnecessary high power, thus causing greater uplink interference

Method used

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  • Out-ring power control method for upline enhancement special channel
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  • Out-ring power control method for upline enhancement special channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Embodiment 1: Embodiment of an outer loop power control method for an uplink data channel in an E-DCH

[0088] Node B measures uplink reception quality and reports to RNC, including DCH uplink reception quality and E-DCH uplink reception quality, uplink reception quality includes DCH and E-DCH block error rate, that is, CRC check result, DCH and E-DCH transmission channel The bit error rate may also report the number of E-DCH data transmissions to the RNC.

[0089] The RNC sets the target signal-to-noise ratio (SIR target) of the outer loop power control according to the uplink reception quality of the DCH transmission channel, which is based on the uplink reception quality of the DCH transmission channel. When the DCH uplink reception quality is higher than the target value, the SIR target will be Decrease, when the DCH uplink reception quality is lower than the target value, the SIR target will be increased, and then the RNC will send the value of the SIR target to th...

Embodiment 2

[0122] Embodiment 2: Embodiment of the method for controlling the outer loop power of the uplink control channel in the E-DCH

[0123] RNC sets the initial value of the power offset of E-DPCCH / DPCCH and transmits it to UE and Node B.

[0124] The RNC reconfigures the power offset of the E-DPCCH / DPCCH.

[0125] The RNC resets the power offset of the E-DPCCH / DPCCH according to the change of the power offset of the E-DPDCH / DPCCH. When the additional E-DPDCH / DPCCH power offset increases, the E-DPCCH / DPCCH power offset also increases; when the additional E-DPDCH / DPCCH power offset decreases, the E-DPCCH / DPCCH power offset remains remain unchanged or decrease. In order to ensure the quality of the E-DPCCH, the speed at which the power offset of the E-DPCCH / DPCCH decreases is lower than the speed at which it increases. This method is relatively simple to adjust the power offset of the E-DPCCH / DPCCH, and does not require the Node B to estimate and report the quality of the E-DPCCH....

Embodiment 3

[0128] Embodiment 3: When the E-DCH carries multiple QoS data, an embodiment of the method for controlling the outer loop power of the uplink data channel in the E-DCH

[0129] From the perspective of the MAC layer, when the E-DCH channel carries multiple QoS, data of different QoS can be carried in different MAC_d flows, and multiple MAC_d flows can be mapped to one MAC_e PDU. Therefore, in one TTI, the E-DCH may only carry QoS1 data, may only carry QoS2 data, or may simultaneously carry QoS1 and QoS2 data.

[0130] In this case, the outer loop power control of the uplink data channel in the E-DCH can use the following method: Node B measures the uplink reception quality and reports it to the RNC, including the DCH uplink reception quality, and the QoSi (i=1, 2, ..., N; N is the maximum number of QoS that can be carried by E-DCH) Uplink reception quality of data, uplink reception quality can include DCH and E-DCH block error rate, that is, CRC check result, DCH and E-DCH Tra...

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Abstract

The operation method for upward exterior ring power control in E-DCH comprises steps: using Node B to detect upward receiving quality and report to RNC; the RNC arranges the target signal-noise rate for exterior ring power control according to received quality and sends the said rate to Node B, arranges a added E-DPDCH / DPCCH power off-set value according to QoS and upward received quality of E-DCH and DCH and sends the said off-set value to UE and Node B; the RNC determines the emission power for upward E-DPDCH and sends E-DCH data according to power off-set in Rel99 and added power off-set value. This invention can compensate the difference between E-DCH and SIR target of DCH, avoids that SIR target sets SIR target with higher business, decreases upward disturbance, and makes RNC control the physical layer transmission number for E-DCH data.

Description

technical field [0001] The present invention relates to the third generation of mobile communication, in particular to an uplink outer loop power control method in E-DCH. Background technique [0002] The second generation mobile communication system includes GSM (Global System for Mobile Communications) and IS (Interim Standard)-95, the main goal is to provide voice services. GSM adopts TDMA technology and was commercialized in 1992, mainly used in Europe and China. What IS-95 uses is code division multiple access technology, mainly used in the United States and South Korea. [0003] At present, mobile communication technology has evolved into the third generation mobile communication system, which provides high-speed and high-quality data services and multimedia services in addition to voice services. The third-generation mobile communication system includes the asynchronous CDMA system (or WCDMA system, or UMTS) studied by the 3GPP International Organization for Standar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005
Inventor 王婷李小强张玉建杜高科李周镐
Owner BEIJING SAMSUNG TELECOM R&D CENT
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