Apple looking into wireless interference mitigation
TweetFollow Us on Twitter

Apple looking into wireless interference mitigation

Apple is working on ways to lessen wireless interference on devices such as the iPhone, per a new patent (number 20110237246) for "Wireless Interference Mitigation" has appeared at the US Patent & Trademark Office.

The patent involves mitigating interference in a mobile wireless communication device by using an estimation of the performance impact of interfering signals generated by a wireless cellular transmitter and received by a co-located wireless local area network receiver. Wireless local area network frequency band usage is modified based on the performance impact estimation and the state of the wireless cellular and wireless local area network connections.

The estimation accounts for properties of the wireless cellular transmitter and wireless local area network receiver as well as operational characteristics of the wireless cellular and wireless local area network connections. Indranil Sen is the inventor.

Here's Apple's background and summary of the invention: "Mobile wireless communication devices, such as a wireless cellular telephone or a wireless enabled computer tablet, can provide a wide variety of communication services including, for example, voice communication, text messaging, internet browsing, and audio/video streaming. Different communication services on mobile wireless communication devices can use one or more different communication protocols that transmit and receive in separate or overlapping bands of radio frequency spectrum.

"Different bands of radio frequency spectrum are allocated for different services, some strictly licensed to particular wireless operators, while other frequency bands can be open for shared common use. Ideally transmissions in one frequency band do not interfere with the reception of transmissions in another frequency band; however, the advent of mobile wireless communication devices that include multiple wireless transceivers, each configured to operate with a different communication protocol and placed in relatively close proximity to each other in the mobile wireless communication device can result in interference between them.

"Mobile wireless communication devices offer short range connections to wireless accessory devices, medium range connections to wireless network access points, and long range connections to cell towers, thereby providing flexibility and near ubiquity for connecting a user to a wide array of communication services. For example, voice communications can be realized over a 3G communication link using a global system for mobile communications (GSM) protocol or using a voice over internet protocol (VoIP) packet protocol through a wireless local area network connection.

"Some mobile wireless communication devices can support seamlessly transferring a communication link between connections that use different protocols. Several national and international standards organizations develop and specify communication protocols that can enable consistent performance and compatibility between products provided by different manufacturers.

"While each communication protocol can require that transmissions by mobile wireless communications devices using the protocol be restricted to not transmit above a defined power spectral density mask, i.e. keep radiated transmit power below certain levels across different radio frequency bands, current mobile wireless communication devices include receivers capable of detecting radio frequency signals at very low power levels. With a relatively high power transmitter located close to a sensitive receiver in the same mobile wireless communication device, providing adequate isolation between them can prove quite challenging.

"Isolation between a transmitter and a receiver co-located in the same mobile wireless communication device can use specific antenna design, shielding, filtering and placement to minimize receiving interfering radio frequency power in one receiving antenna from another transmitting antenna. Current mobile wireless communication devices can be quite compact in size, and the maximum physical distance possible on such small devices between a transmitter and receiver can limit the amount of radiated radio frequency power loss resulting from antenna placement. Thus there exists a need for a method to mitigate interference between radio frequency transceivers placed in the same mobile wireless communications device.

"This paper describes various embodiments that relate to methods to mitigate interference between different transceivers in a mobile wireless communication device. A method to reduce interference between a first transmitter and a second receiver in a mobile wireless communication device based on estimating interference into the second receiver and coordinating transmissions by the first transmitter is described.

"In one embodiment a method of mitigating interference in a mobile wireless communication device includes at least the following steps. A performance impact to signals received by a first transceiver through a wireless local area network connection due to interference from signals transmitted by a second transceiver over a wireless cellular connection is estimated. The first and second transceivers are co-located in the mobile wireless communication device. The wireless local area network connection is changed to use a second frequency band based on the performance impact estimation.

"The estimation of the performance impact of interference between the first and second transceivers is periodically repeated while the wireless local area network connection and wireless cellular connection are active. In a representative embodiment, the estimation accounts for properties of the transmitter of the wireless cellular connection and the receiver of the wireless local area network connection as well as operational characteristics of the wireless cellular and wireless local area network connections.

"In another embodiment, a mobile wireless communication device comprises a first transceiver that receives signals through a wireless local area network connection, a second transceiver that transmits signals through a wireless cellular connection, and a control processor coupled to the first and second transceivers. The control processor mitigates interference in the mobile wireless communication device.

"The control processor estimates the performance impact of signals received by the first transceiver from signals transmitted by the second transceiver. The control processor changes the wireless local area network connection to not use a portion of a first frequency band based on the performance impact estimation.

"The estimation and change of frequency band usage is repeated periodically. In a representative embodiment, the estimation accounts for properties of the transmitter of the wireless cellular connection and the receiver of the wireless local area network connection as well as operational characteristics of the wireless cellular and wireless local area network connections

"In yet another embodiment, a computer readable medium for tangibly storing computer program code executable by a processor for mitigating interference in a mobile wireless communication device is described. The computer readable medium includes computer program code for estimating a performance impact to signals received by a first transceiver of the mobile wireless communication device through a wireless local area network connection by signals transmitted by a second transceiver of the mobile wireless communication device through a wireless cellular connection.

"The computer readable medium further includes computer program code for changing the wireless local area network connection to use a second frequency band based on the performance impact estimation. The computer readable medium also includes computer program code for periodically repeating the estimating the performance impact and changing the wireless local area network connection while the wireless local area network and wireless cellular connections are active.

"In still another embodiment, an apparatus for mitigating interference in a mobile wireless communication device is described. The apparatus can include at least means for estimating a performance impact to signals received in a first frequency band by a first transceiver of the mobile wireless communication device through a wireless local area network connection with a first wireless local area network partner device from signals transmitted by a second transceiver of the mobile wireless communication device through a wireless cellular connection, means for changing the wireless local area network connection to use a second frequency band based on the performance impact estimation, and means for periodically the estimating and changing while the wireless local area network and wireless cellular connections are active."

-- Dennis Sellers

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Arq 5.8.5 - Online backup to Google Driv...
Arq is super-easy online backup for Mac and Windows computers. Back up to your own cloud account (Amazon Cloud Drive, Google Drive, Dropbox, OneDrive, Google Cloud Storage, any S3-compatible server... Read more
Backblaze 4.3.0.44 - Online backup servi...
Backblaze is an online backup service designed from the ground-up for the Mac. With unlimited storage available for $5 per month, as well as a free 15-day trial, peace of mind is within reach with... Read more
Instaradio 7.1 - Listen to your favorite...
Instaradio is fast, and it could be the radio player you have been waiting for. Try the app thousands of people rely on for listening to radio. Features Listen to radio from all around the world... Read more
EtreCheck 3.3.3 - For troubleshooting yo...
EtreCheck is an app that displays the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to... Read more
Hopper Disassembler 4.2.1- - Binary disa...
Hopper Disassembler is a binary disassembler, decompiler, and debugger for 32-bit and 64-bit executables. It will let you disassemble any binary you want, and provide you all the information about... Read more
Slack 2.6.2 - Collaborative communicatio...
Slack is a collaborative communication app that simplifies real-time messaging, archiving, and search for modern working teams. Version 2.6.2: Fixed Inexplicably, context menus and spell-check... Read more
Apple Final Cut Pro X 10.3.4 - Professio...
Apple Final Cut Pro X is a professional video editing solution.Completely redesigned from the ground up, Final Cut Pro adds extraordinary speed, quality, and flexibility to every part of the post-... Read more
Numi 3.15 - Menu-bar calculator supports...
Numi is a calculator that magically combines calculations with text, and allows you to freely share your computations. Numi combines text editor and calculator Support plain English. For example, '5... Read more
TunnelBear 3.0.14 - Subscription-based p...
TunnelBear is a subscription-based virtual private network (VPN) service and companion app, enabling you to browse the internet privately and securely. Features Browse privately - Secure your data... Read more
Apple iMovie 10.1.6 - Edit personal vide...
With an all-new design, Apple iMovie lets you enjoy your videos like never before. Browse your clips more easily, instantly share your favorite moments, and create beautiful HD movies and Hollywood-... Read more

Latest Forum Discussions

See All

Goat Simulator PAYDAY (Games)
Goat Simulator PAYDAY 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: ** IMPORTANT - SUPPORTED DEVICES **iPhone 4S, iPad 2, iPod Touch 5 or better Goat Simulator: Payday is the most... | Read more »
Zombie Gunship Survival Beginner's...
The much anticipated Zombie Gunship Survival is here. In this latest entry in the Zombie Gunship franchise, you're tasked with supporting ground troops and protecting your base from the zombie horde. There's a lot of rich base building fun, and... | Read more »
Mordheim: Warband Skirmish (Games)
Mordheim: Warband Skirmish 1.2.2 Device: iOS Universal Category: Games Price: $3.99, Version: 1.2.2 (iTunes) Description: Explore the ruins of the City of Mordheim, clash with other scavenging warbands and collect Wyrdstone -... | Read more »
Mordheim: Warband Skirmish brings tablet...
Legendary Games has just launched Mordheim: Warband Skirmish, a new turn-based action game for iOS and Android. | Read more »
Magikarp Jump splashes onto Android worl...
If you're tired ofPokémon GObut still want something to satisfy your mobilePokémon fix,Magikarp Jumpmay just do the trick. It's out now on Android devices the world over. While it looks like a simple arcade jumper, there's quite a bit more to it... | Read more »
Purrfectly charming open-world RPG Cat Q...
Cat Quest, an expansive open-world RPG from former Koei-Tecmo developers, got a new gameplay trailer today. The video showcases the combat and exploration features of this feline-themed RPG. Cat puns abound as you travel across a large map in a... | Read more »
Jaipur: A Card Game of Duels (Games)
Jaipur: A Card Game of Duels 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: ** WARNING: iPad 2, iPad Mini 1 & iPhone 4S are NOT compatible. ** *** Special Launch Price for a limited... | Read more »
Subdivision Infinity (Games)
Subdivision Infinity 1.03 Device: iOS Universal Category: Games Price: $2.99, Version: 1.03 (iTunes) Description: Launch sale! 40% Off! Subdivision Infinity is an immersive and pulse pounding sci-fi 3D space shooter. https://www.... | Read more »
Clash of Clans' gets a huge new upd...
Clash of Clans just got a massive new update, and that's not hyperbole. The update easily tacks on a whole new game's worth of content to the hit base building game. In the update, that mysterious boat on the edge of the map has been repaired and... | Read more »
Thimbleweed Park officially headed to iO...
Welp, it's official. Thimbleweed Park will be getting a mobile version. After lots of wondering and speculation, the developers confirmed it today. Thimbleweed Park will be available on both iOS and Android sometime in the near future. There's no... | Read more »

Price Scanner via MacPrices.net

Free Tread Wisely Mobile App Endorsed By Fath...
Just in time for the summer driving season, Cooper Tire & Rubber Company has announced the launch of a new Tread Wisely mobile app. Designed to promote tire and vehicle safety among teens and... Read more
Commercial Notebooks And Detachable Tablets W...
Worldwide shipments of personal computing devices (PCDs), comprised of traditional PCs (a combination of desktop, notebook, and workstations) and tablets (slates and detachables), are forecast to... Read more
Best value this Memorial Day weekend: Touch B...
Apple has Certified Refurbished 2016 15″ and 13″ MacBook Pros available for $230 to $420 off original MSRP. An Apple one-year warranty is included with each model, and shipping is free: - 15″ 2.6GHz... Read more
13-inch MacBook Airs on sale for up to $130 o...
Overstock.com has 13″ MacBook Airs on sale for up to $130 off MSRP including free shipping: - 13″ 1.6GHz/128GB MacBook Air (sku MMGF2LL/A): $869.99 $130 off MSRP - 13″ 1.6GHz/256GB MacBook Air (sku... Read more
2.8GHz Mac mini available for $973 with free...
Adorama has the 2.8GHz Mac mini available for $973, $16 off MSRP, including a free copy of Apple’s 3-Year AppleCare Protection Plan. Shipping is free, and Adorama charges sales tax in NY & NJ... Read more
15-inch 2.2GHz Retina MacBook Pro on sale for...
Amazon has 15″ 2.2GHz Retina MacBook Pros (MJLQ2LL/A) available for $1749.99 including free shipping. Apple charges $1999 for this model, so Amazon’s price is represents a $250 savings. Note that... Read more
Huawei Unveils New ‘Business-Styled’ MateBook...
Huawei has introduced a trio of new MateBook laptops, expanding its mobile portfolio and building on its success in delivering attractive and powerful high-end devices. The company claims the HUAWEI... Read more
Deal! Gold 12-inch 1.2GHz Retina MacBook for...
Amazon has the 2016 Gold 12″ 1.2GHz Retina MacBook (MLHF2LL/A) on sale for $350 off MSRP for a limited time. Shipping is free: - 12″ 1.2GHz Gold Retina MacBook: $1249.99 $350 off MSRP We expect this... Read more
13-inch 2.0GHz MacBook Pros on sale for $100...
B&H has the non-Touch Bar 13″ 2.0GHz MacBook Pros in stock today and on sale for $100 off MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: - 13″ 2.0GHz MacBook Pro Space... Read more
15-inch 2.2GHz Retina MacBook Pro, Apple refu...
Apple has Certified Refurbished 2015 15″ 2.2GHz Retina MacBook Pros available for $1699. That’s $300 off MSRP, and it’s the lowest price available for a 15″ MacBook Pro. An Apple one-year warranty is... Read more

Jobs Board

*Apple* Retail - Multiple Positions, White P...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
Best Buy *Apple* Computing Master - Best Bu...
**509110BR** **Job Title:** Best Buy Apple Computing Master **Location Number:** 000048-Topeka-Store **Job Description:** **What does a Best Buy Apple Computing Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description:SalesSpecialist - Retail Customer Service and SalesTransform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Systems Engineer - California Polyte...
Cal Poly, San Luis Obispo Apple Systems Engineer Department: ITS - Customer & Tech Support (134900) College/Division: Academic Affairs Salary Range: Position Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.