Method for achieving power control and user terminal

A user terminal and power control technology, applied in the field of communication, can solve problems such as mutual interference, avoid delay problems and improve overall throughput

Active Publication Date: 2016-01-20
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Power control can effectively solve the problem of mutu

Method used

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  • Method for achieving power control and user terminal
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  • Method for achieving power control and user terminal

Examples

Experimental program
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Example Embodiment

[0143] Example 1:

[0144] This embodiment is aimed at LTE data services and CDMA1x voice services. At this time, the priority of the CDMA mode is always higher than that of the LTE mode, so the priority does not need to be adjusted.

[0145] The BC0 frequency band occupied by CDMA850 corresponds to LTEBand5. As the network evolves to LTE, some frequency bands will be reorganized to deploy LTE systems. Therefore, terminal equipment is required to support both CDMA and LTE in Band5. Affected by the Band5 frequency band characteristics, when the two systems are concurrently performing services (such as SVLTE terminals), the two signals in the terminal will generate third-order intermodulation interference in the terminal receiving frequency band, thereby affecting the downlink receiving performance of the terminal equipment. As for CDMA1x serving voice users, this intermodulation interference will have a serious impact on the communication quality of the user's voice, and even drop c...

Example Embodiment

[0168] Example 2:

[0169] This embodiment is aimed at the concurrent LTE and WLAN modes when the MiFi / CPE or LTE mobile phone is used as a WiFi hotspot. At this time, the priority of the LTE mode and the WLAN mode needs to be dynamically adjusted.

[0170] WLAN currently mainly uses 2.4GHz and 5.8GHz frequency bands, and Band40 (2300-2400MHz) defined by 3GPP and WLAN2.4G frequency band (2400-2483.5MHz) are in close frequency relationship. When the TD-LTE system is deployed near 2400MHz, since TD-LTE and WLAN are both TDD systems, there will be serious interference problems between the two systems. For independent equipment, engineering isolation measures can be used between the two systems to reduce the impact of interference on system performance. However, for CPE, MiFi devices or users using LTE mobile phones as WiFi hotspots, they need to support the concurrent work of the two systems. Due to the size of the device, it is impossible to avoid interference through engineering is...

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Abstract

The invention discloses a method for achieving power control and a user terminal. The method comprises the following steps: after monitoring that a first communication mode is in a communication state, that a second communication mode requires communication, and judging that an interference scene exists between the first communication mode and the second communication mode, selecting a communication mode with a low priority level from the first communication mode and the second communication mode; setting the communication mode with the low priority level as a power backoff state; if the communication quality of the communication mode with a high priority level is lower than a preset threshold, reducing an upper limit of transmitting power of the communication mode with the low priority level; and adjusting the transmitting power of the communication mode with the low priority level, to prevent the transmitting power of the communication mode with the low priority level from exceeding the corresponding upper limit of transmitting power. Therefore, the time delay problem caused by service interruption/restart can be effectively avoided, and the concurrence of the communication modes can be guaranteed to the utmost, and the overall throughput of the system can be effectively improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for realizing power control and a user terminal. Background technique [0002] At present, with the rapid development of wireless communication technology, various wireless technology systems and standards have emerged around the world, including the second-generation mobile communication standard GSM (Global System for Mobile communication, Global System for Mobile Communication) and IS-95, which mainly provide voice services. And its corresponding enhanced version GPRS (GeneralPacketRadioService, General Packet Radio Service) / Edge (EnhancedDataRateforGSMEvolution, enhanced data rate GSM evolution) and CDMA (CodeDivisionMultipleAccess, code division multiple access) 1x, the third generation mobile communication standard CDMA2000, WCDMA (WidebandCodeDivisionMultipleAccess , Wideband Code Division Multiple Access) and TD-SCDMA (TimeDivision-SynchronousCodeDivisionMultipl...

Claims

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Application Information

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IPC IPC(8): H04W52/28
Inventor 赵冬孙震强
Owner CHINA TELECOM CORP LTD
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