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Power control method to mitigate interference for in-device coexistence

A coexistence interference and in-device technology, applied in power management, electrical components, wireless communication, etc., can solve problems affecting the reception of radio transceivers, different UE performance and uses, and different output powers

Active Publication Date: 2012-10-03
HFI INNOVATION INC
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the most fundamental problems of IDC interference is that when one radio transceiver transmits too much power, it will affect the reception of another co-existing / cooperating radio transceiver at the same time
However, due to different UE performance and usage, the maximum UE output power and the current UE output power are different

Method used

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  • Power control method to mitigate interference for in-device coexistence
  • Power control method to mitigate interference for in-device coexistence
  • Power control method to mitigate interference for in-device coexistence

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Embodiment Construction

[0020] The following descriptions are preferred embodiments for implementing the present invention, and some embodiments are illustrated by the accompanying drawings.

[0021] figure 1 is a schematic diagram of a user equipment UE101 with multiple radio modules in a wireless communication system 100 according to an embodiment of the present invention. The wireless communication system 100 includes a user equipment UE101, a serving base station (such as eNB) eNB102, a WiFi access point (Access Point, AP) WiFi AP103, a Bluetooth (Bluetooth, BT) device BT104, and a global positioning system (Global Positioning System, GPS) Satellite device GPS105. The wireless communication system 100 can provide various network access services for the UE 101 through different radio access technologies. For example, eNB102 can provide OFDMA-based cell radio network (such as 3GPP LTE or LTE-A system) access; WiFi AP103 can provide local area coverage for WLAN access; BT104 can provide short-ran...

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Abstract

A power control method to mitigate in-device coexistence (IDC) interference is provided. A wireless communication device (UE) is equipped with a first LTE radio module and a second co-located WiFi / BT / GSNN radio module. Upon detecting coexistence or IDC interference, the UE applies power control method to mitigate the interference. In a first embodiment, the LTE radio module adjusts its power parameters locally without informing the serving eNB. In a second embodiment, the LTE radio module adjusts its power parameters and implicit informs the eNB through existing PHR reporting. In a third embodiment, the LTE radio module changes its power or power class and explicitly informs the eNB through UE capability or new RRC message or MAC CE. Power control can be used as a low cost and lightweight solution before applying other heavyweight solutions that either require more resource or control overhead, or have higher impact on throughput.

Description

[0001] cross reference [0002] This application claims priority under 35 U.S.C. §119 to U.S. Patent Provisional Application No. 61 / 430,283, filed January 6, 2011, entitled "Power Control Method for Reducing In-Device Coexistence Interference," and Use this application as a reference. technical field [0003] The present invention relates to wireless network communications, and more particularly to reducing in-device coexistence (IDC) interference. Background technique [0004] Today, Internet access is nearly ubiquitous. From the perspective of network infrastructure, different networks belong to different layers (such as distribution layer, cellular layer, hotspot layer, personal network layer, and fixed / wireline layer), thereby providing different sizes of coverage and different degrees of user connectivity sex. Since a particular network may not be able to cover every location, and different networks are good at providing different services, user equipment needs to s...

Claims

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Application Information

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IPC IPC(8): H04W16/14
CPCH04W52/367H04W52/243H04W52/34H04W72/048H04W52/365H04W52/38H04W72/51
Inventor 徐家俊麦可·罗伯兹林志远陈义升傅宜康
Owner HFI INNOVATION INC
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