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Power control method for time-division synchronous CDMA communication system

A code division multiple access and communication system technology, which is applied in the power control field of time division synchronous code division multiple access communication system, can solve the problems of terminal interference, affect the communication quality of other terminals, and it is difficult to obtain satisfactory communication quality, and achieves simple design. Effect

Inactive Publication Date: 2011-04-20
ZTE CORP
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  • Application Information

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Problems solved by technology

Otherwise, if the signal level of the terminal's transmitted signal reaches the wireless transceiver device on the network side is too low, it will be interfered by signals from other terminals and it is difficult to obtain satisfactory communication quality; and if the signal level is too high, although the terminal Good communication quality can be obtained, but on the one hand, its power consumption is large, which seriously affects the standby time of the terminal under limited battery conditions; on the other hand, high-power signals will interfere with other terminals, thus affecting the communication quality of other terminals

Method used

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  • Power control method for time-division synchronous CDMA communication system
  • Power control method for time-division synchronous CDMA communication system

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Embodiment Construction

[0030] The method of the present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0031] The present invention provides a power control method for the uplink enhanced service physical channel in the HSUPA technology in the TD-SCDMA system respectively, and the ideas of the power control method include:

[0032] 1) Open-loop power control: The user equipment calculates the sum of the measured path loss value of the reference physical channel and the expected received power value of the uplink enhanced service physical channel received from the network side as the open-loop power of the uplink enhanced service physical channel Initial transmit power during control.

[0033] 2) Closed-loop power control: the user equipment adjusts the transmit power of the uplink enhanced service physical channel according to the received power control command sent by the network side.

[0034] A method for power control of the upl...

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Abstract

The invention discloses a power control method of time synchronization code multi-address communication system; the technology in the TD-SCDMA system, the network sends the upgoing buildup business physical channel expectation receiving power value to the user's device; the user's device add the measured referenced physical channel route lossless value and the received upgoing buildup business physical channel expectation receiving power value, and calculates the sending power value in the open loop power control. The network calculates the control order parameters according to receiving power value in the upgoing buildup business physical channel, and sends the parameters order to the user's device, the user's device adjusts the sending power of upgoing buildup business physical channel according to the power adjusting order. The system in the invention can be realized easily, and it can control the sending power of UE in upgoing buildup business physical channel timely.

Description

technical field [0001] The invention relates to the technical field of wireless communication systems, in particular to a power control method of a time division synchronous code division multiple access communication system. Background technique [0002] TD-SCDMA (Time Division Synchronous Code Division Multiple Access) wireless communication system is one of the third generation mobile communication system standards defined by the 3GPP (3rd Generation Partnership Project) specification. An important feature of the third generation mobile communication system is that it can better support packet data services. In order to increase the rate of uplink packet services, the 3GPP specification introduces a High Speed ​​Uplink Packet Access (HSUPA, High Speed ​​Uplink Packet Access) technology, also known as an Uplink Enhancement (Uplink Enhancement) technology. In HSUPA technology, a new protocol processing entity and a new channel structure are introduced. In order to reduce ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/24
Inventor 张银成陈慧马志锋
Owner ZTE CORP