Method and devices for power control

A power control and transmit power technology, applied in the field of power control, can solve the problems of occupying code channel resources, affecting the accuracy of instantaneous path loss estimation, reducing power control performance, etc., and achieving the effect of saving network resources

Inactive Publication Date: 2009-11-11
TD TECH COMM TECH LTD
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Problems solved by technology

[0010] However, when the UE needs to transmit HSUPA services on the secondary carrier, since there is no PCCPCH on the secondary carrier, the UE will not be able to estimate the instantaneous path loss, and thus cannot perform effective power control on the E-PUCH
In this case, if the UE switches back to the primary carrier and calculates the instantaneous path loss on the secondary carrier based on the

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  • Method and devices for power control
  • Method and devices for power control
  • Method and devices for power control

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[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly expressed, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] figure 1 It is a flowchart of a power control method on a secondary carrier in an embodiment of the present invention. Such as figure 1 As shown, the power control method on the secondary carrier in the embodiment of the present invention includes the following steps:

[0027] Step 101: Configure E-HICH on the secondary carrier.

[0028] In order to support the HSUPA service, the network side (for example, RAN) will pre-configure a resource pool, which includes channel resources such as E-PUCH, E-AGCH, and E-HICH. When a UE that can support the HSUPA service transmits a scheduled service or a non-scheduled service, the RAN will configure the corresponding scheduled or non-scheduled E-HICH for the UE. Therefore, acco...

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Abstract

The embodiment of the invention discloses a power control method comprising the following steps: a network side collocates an acknowledgement indicator channel E-HICH on an auxiliary carrier and sendsinformation of the collocated E-HICH; and a receiving terminal calculates instantaneous path loss according to the received information of the E-HICH and performs power control on an enhanced physical uplink channel (E-PUCH) on the auxiliary carrier according to the instantaneous path loss. The embodiment of the invention also discloses a power control device of the network side and a power control device of a user equipment side. The method and the devices can perform power control on the E-PUCH on the auxiliary carrier by only utilizing the collocated E-HICH resource without increasing extra code channel resources, thereby effectively saving network resources while finishing power control.

Description

technical field [0001] The present invention relates to power control technology, in particular to a power control method and device. Background technique [0002] In Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, due to the upgrade of Radio Access Network (RAN) and User Equipment (UE), High Speed ​​Uplink Packet Access (HSUPA) can be supported on primary carrier and secondary carrier services, which can improve the uplink performance and capacity of the system, and increase the competitiveness of the system and equipment. However, while supporting the HSUPA service, the system also needs to control the power of the uplink, so as to reduce the large interference to the local cell and adjacent cells, so as to avoid the performance degradation of the local or the entire network. [0003] At present, when performing power control on the UE through a dedicated physical channel (DPCH), the transmit power (P e-base +L') to perform power control, that ...

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Application Information

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IPC IPC(8): H04B7/005
CPCY02D30/70
Inventor 袁乃华佟学俭
Owner TD TECH COMM TECH LTD
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