Motorola Corporation

Nelson C Hung

Michael D Kotzin

Eugene J Bruckert

John R Welk

Dah-Lain Almon Tang

Albert Chen

A communication system adds transport layer protocol independent address labels to data packets. The communication system then routes the data packets based on the address labels rather than routing addresses, such as IP, UDP, and ATM headers, and thus can multiplex and transport data packets that are formatted based on a variety of transport protocols.

Label-based multiplexing

In a communication system where frame boundaries for the discrete frames for different users may be offset relative to one another, assignment of a remote unit (125) to a particular frame offset occurs by a processor (321) determining a frame offset belonging to a group that is the least busy group of all possible groups. In addition, during handoff of the remote unit (125) from a serving base station (130) to a neighboring base station, the remote unit (125) is attempted to be kept within the same call group, however should the same call group of the neighboring base station be filled, the remote unit (125) is placed in a second call group that is one call group prior to the current call group.

Method and apparatus for transmitting information in a communication

A digital cellular time-division multiple access (TDMA) system including a cellular switch and at least one base site employing 6:1 packing of transcoded information. The system incorporates the VSELP speech encoding algorithm to transcode data input from a cellular switch and a unique packing scheme to compress six messages channels worth of transcoded data into one 20 msec, 160 frame information block for transmission in one TDM timeslot. The compressed transcoded data is transmitted to a base-site on a T1 link where the six message channels worth of transcoded data is un-packed and coded. The coded information is then separated into two groups of three air-interface timeslots where two separate transmitters transmit one group each of three air-interface timeslots on two separate radio carrier frequencies.

Growing community of inventors

Long Grove, IL, United States of America

Nelson C Hung