Li Fung Chang - Holmdel NJ Kapil K. Chawla - Middletown NJ Justin C. Chuang - Holmdel NJ Zoran Kostic - Holmdel NJ Nelson Sollenberger - Tinton Falls NJ Xiaoxin Qiu - Bridgewater NJ
Assignee:
ATT Corp. - New York NY
International Classification:
H04J 1306
US Classification:
375133, 455452
Abstract:
This invention provides a dynamic frequency hopping system that utilizes information from multiple base stations. The system assigns frequency hopping patterns based on current interference and traffic environments to avoid interference thus gaining the benefits of interference averaging and interference avoidance. The system imposes less stringent measurement requirements on terminals (wireless mobile devices) because many measurement requirements are replaced by generating estimates based on measurement data received from other base stations within a base station neighborhood. The system may continuously verify that the frequency hopping patterns assigned to the links of the system optimizes system performance. The system compares system performance of possible frequency hopping patterns against currently assigned frequency hopping pattern to optimize system performance. When a request for a link is received, a similar process as above is performed where the request is granted/denied/delayed based on system optimization requirements.
Medium Access Control Layer For Packetized Wireless Systems
Li Fung Chang - Holmdel NJ Kapil K. Chawla - Middletown NJ Justin C. Chuang - Holmdel NJ Xiaoxin Qiu - Bridgewater NJ Nelson R. Sollenberger - Tinton Falls NJ
Assignee:
ATT Corp - New York NY
International Classification:
H04Q 728
US Classification:
370341
Abstract:
An arrangement where, in addition to the control channels that are used to set up sessions, there is a logically and physically separate and independent set of control channels that can be used as session control channels. Illustratively, the physical GSM frame arrangement that employs 8 logical slots is used, with one slot both in the uplink and downlink dedicated to these separate control channels. In the downlink, such a control channel provides channel grant information, requests to make and transmit power measurements, poll mobile units, etc. In the uplink, such a control channel can be used to request access to a traffic channel, to report on power measurements, to request special hand-off handling, to respond to polling, etc. Because the uplink session control channel does not need to carry a significant amount of information, the GSM slot can be divided into minislots, with each minislot constituting a session control channel for a group of mobile units.
Li Fung Chang - Holmdel NJ Hui Luo - Old Bridge NJ Xiaoxin Qiu - Bridgewater NJ
Assignee:
ATT Corp. - New York NY
International Classification:
H04Q 720
US Classification:
4554563, 4554142, 37911413
Abstract:
An on-demand message system includes a profile proxy server and a plurality of message servers coupled to a wireless network for sending messages to mobile users under conditions specified by the users and sellers. Users provide profile information specifying categories and conditions for which they will receive messages. Sellers also provide profile information specifying conditions under which they want messages to be sent. A multicast message is sent and processed by target users in response to a predetermined event, e. g. , location update, conveying information related to a seller for which the target users have expressed an interest in receiving.
Tdma Communication System Having Enhanced Power Control
Li Fung Chang - Holmdel NJ Kapil K. Chawla - Scotch Plains NJ Justin Chi-I Chuang - Holmdel NJ Zoran Kostic - Holmdel NJ Xiaoxin Qiu - Bridgewater NJ Nelson Ray Sollenberger - Farmingdale NJ Shailender B. Timiri - Bellevue WA
Assignee:
ATT Wireless Services, Inc. - Redmond WA
International Classification:
H04Q 720
US Classification:
455522, 455 69, 4552451
Abstract:
A TDMA wireless communication system adjusts the power control target and transmission power based upon link quality to enhance voice capacity. The power can be adjusted in response to the average SNIR and number of decoding errors in a link quality reporting period. The power control target can be increased and decreased in discrete intervals after evaluating the number of decoding errors in the reporting period. The transmission power can be adjusted towards the new power control target based upon the average SNIR.
Wireless Network Having Joint Power And Data Rate Adaptation
Li Fung Chang - Holmdel NJ, US Kapil K. Chawla - Scotch Plains NJ, US Justin Che-I Chuang - Holmdel NJ, US Bruce Edwin McNair - Holmdel NJ, US Xiaoxin Qiu - Bridgewater NJ, US
Assignee:
AT&T Corp. - New York NY
International Classification:
H04B007/212
US Classification:
370442, 370347
Abstract:
This invention provides interference predictions, suitable for least interference dynamic channel assignment use or other frequency hopping uses by de-coupling the time slot assignment and the frequency hopping pattern assignment. In particular, a least interfered time slot is selected based on an aggregate interference measurement performed across an entire transmission band or a pre-specified range of frequencies in the transmission band. A user is assigned a least interfered time slot and provided an appropriate frequency hopping pattern.
Pipeline Architecture For Multi-Slot Wireless Link Processing
Baoguo Yang - Iselin NJ, US Li Fung Chang - Holmdel NJ, US Zhijun Gong - Iselin NJ, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04B 1/10
US Classification:
375350, 375346, 455307, 708300
Abstract:
A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband processor, and an equalizer module. The RF from end is operable to receive the plurality of received RF bursts and to convert the RF bursts to corresponding baseband signals. The baseband processor operably couples to the RF front end, is operable to receive the baseband signals, is operable to pre-equalization process the baseband signals to produce processed baseband signals, and is operable to post-equalization process soft decisions. The equalizer module operably couples to the baseband processor and is operable to equalize the processed baseband signals to produce the soft decisions. These RF bursts may be contained in adjacent slots or, in non-adjacent slots, or in a combination of adjacent slots and non-adjacent slots.
Li Fung Chang - Holmdel NJ, US Hui Luo - Old Bridge NJ, US Xiaoxin Qiu - Bridgewater NJ, US
Assignee:
AT&T Corp. - New York NY
International Classification:
H04Q 7/20
US Classification:
4554563, 4554142, 705 26
Abstract:
An on-demand message system includes a profile proxy server and a plurality of message servers coupled to a wireless network for sending messages to mobile users under conditions specified by the users and sellers. Users provide profile information specifying categories and conditions for which they will receive messages. Sellers also provide profile information specifying conditions under which they want messages to be sent. A multicast message is sent and processed by target users in response to a predetermined event, e. g. , location update, conveying information related to a seller for which the target users have expressed an interest in receiving.
Realty World, Platinum Burlingame, CA 6507664836 (Phone)
Interests:
Helping buyers and sellers in today's special market . Especially for people who are in need of help with foreclosures.
About:
A Realtor on Your Side Li Chang (#01702341) is one of the most dedicated and committed Real Estate Agents in the Bay Area. Li is a member of the San Mateo Board of Realtors, as well as a certified member of Fannie Mae's HAFA(Home Affordable Foreclosure Alternatives),and experienced in Short Sales and REO’s. She is well versed in this current challenging market. Li is an excellent listener and is committed to providing star service to every customer and client. Li not only handles all the technical aspects of your Real Estate purchase or sale, but also looks after personal concerns. Li is committed to treating her clients with warmth and professionalism as well as always working to improve and be a team player. Li’s knowledge, experience, professionalism, integrity, and personal service make her an indispensable asset. Li always goes above and beyond what is normally expected. She specializes in getting the best results possible & building win-win situations for all parties involved. Please consider Li Chang to be your best RE partner. Together everyone achieves more. HAFA consultant and Short Sale specialist.
Medicine Doctors
Dr. Li H Chang, Flushing NY - DDS (Doctor of Dental Surgery)
Ms. Chang works in Woodburn, OR and specializes in Pediatrics.
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About:
I am a lover of great food and a sucker for gadgets. My passion is the children's book I have illustrated and written called "Doggfucius and the Adventure of the White Carrot".
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Youtube
li-chang 1985
Actuacin Li-Chang 1985.
Duration:
3m 24s
Orange harvest, I put it into tangerine peels...
Another bumper harvest of oranges is coming this year. One bright red,...
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The Princess Weiyoung - Tuoba Jun and Li Chan...
DURecorder This is my video recorded with DU Recorder. It's easy to re...
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Li Changge & Ashile Sun // Can You Hold Me //...
A scheming prince leads the bloody coup and kills the family of Li Cha...
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3m 22s
2021 Changli Explorer Low-Speed EV Review - T...
My thoughts on the 2021 Changli Explorer Low-Speed EV. ScooterCarZ: ....
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11m 31s
Folksong of Midu (Li Chang)
FOLKSONG OF MIDU by Li Chang (China) - finalist of the WASBE Compositi...