1
Sreeram Balakrishnan, Xixian Chen, Yu Dong: Method and device for input of text messages from a keypad. Motorola, Hugh C Dunlop, September 14, 1999: US05952942 (199 worldwide citation)

A method of text entry into a device by activating keys of a keypad (16), where a key represents various characters. Input is delivered to a processor (30) corresponding to the keys activated. A dictionary (33) is searched for candidate combinations of characters corresponding to the keys activated. ...


2
Xixian Chen, Xiao Dong Li, James Weisert, Qiang Yuan, Miroslav Budic: Method and system of managing wireless resources. Rockstar Bidco, Barnes & Thornburg, February 14, 2012: US08116781 (132 worldwide citation)

The invention provides for the management of wireless resources, which can reduce call blocking by allowing high priority services, under suitable conditions, to use resources allocated to low priority services. Thus high priority services can pre-empt the usage of wireless resources by low priority ...


3
Xixian Chen: Text input device and method. Motorola, Hugh C Dunlop, December 28, 1999: US06009444 (99 worldwide citation)

A text input device (10) and a method of data entry for entering text in a language (e.g. Zhuyin phonetic Chinese), in which a character is representable as a first symbol selected from a first subset of symbols and a second symbol selected from a second subset of symbols, where the first and second ...


4
Xixian Chen: Apparatus and method for inputting ideographic characters. Motorola, Romi N Rose, April 25, 2000: US06054941 (80 worldwide citation)

An apparatus (100) and method for inputting ideographic characters. The apparatus (100) has an input pad with a predetermined number of input keys (102, . . . 111). Theoretically, at least a stroke and a radical are mapped to each input key (102, . . . 111). After the apparatus (100) receives at lea ...


5
Xixian Chen, Neil N McGowan, Khaled M Islam, Ning Guo, Hong Ren, Litong Li: Shared channel structure, ARQ systems and methods. Nortel Networks, December 26, 2006: US07154846 (46 worldwide citation)

A forward link design is provided employing CDMA (code division multiple access) technologies in which time division multiplexing is employed between data and control information on the forward link to service multiple users per slot. Another forward link design employing CDMA (code division multipl ...


6
Xixian Chen, Neil McGowan, Weigang Li, James R Weisert, Sabeena Abdulmajeed: Trigger for hard handoff from an overlay carrier to an underlying carrier. Nortel Networks, November 21, 2006: US07139575 (42 worldwide citation)

Initiation of a hard handoff at a mobile station from an overlay carrier to an underlying carrier in a wireless telecommunications system may be considered based on a first condition being satisfied. Once the first condition is satisfied, hard handoff may be initiated based on at least one of a plur ...


7
Shiquan Wu, Song Zhang, Xixian Chen: System and method for estimating signal time of arrival. Nortel Networks, Paul Hashim, December 10, 2002: US06493380 (35 worldwide citation)

A method for estimating a time delay including the steps of first, estimating a channel spectrum from a received signal and a known reference signal, second, extracting a virtual array structure from the estimated channel spectrum, and third, determining the signal time delay using the virtual array ...


8
Hang Zhang, Mo Han Fong, Ke Chi Jang, Jun Li, Xixian Chen, Chung Ching Wang, Geng Wu, James Weisert: Method and apparatus for updating locations of dormant mobile stations. Nortel Networks, Borden Ladner Gervais, June 26, 2007: US07236764 (16 worldwide citation)

In code division multiple access communication systems, there are three levels for updating locations of dormant mobile stations (MSs) and setting up fast call. In sector and are levels, the dormant MS send a layer 2 message containing a message type and MS identifier to a base transceiver station ( ...


9
Xixian Chen, Song Zhang, Shiquan Wu: Timing phase recovery method and apparatus. Nortel Networks, April 15, 2003: US06549594 (15 worldwide citation)

A method for timing phase recovery including the steps of first, estimating an open-eye sequence of a received signal, second, estimating a channel response using the open-eye sequence, and third, correlating the estimated channel response with an ideal channel response to determine the peak correla ...


10
Xixian Chen, Song Zhang, Shiquan Wu: Method and system for acquisition of a time stamped signal. Nortel Networks, March 9, 2004: US06704300 (14 worldwide citation)

The invention is directed to a method and system for acquisition of a time stamped signal burst while preserving timing information. A system for acquisition of a time stamped signal burst while preserving timing information. The system includes a first framer, an offset frequency compensator and a ...