초록 ▼

Introduction of discontinuous transmission in CDMA communications techniques is achieved by using selectively puncturing coded output of a convolutional encoder. By temporarily increasing the coding rate during a frame, information only fills an information part of a frame in a compressed mode, leav

Introduction of discontinuous transmission in CDMA communications techniques is achieved by using selectively puncturing coded output of a convolutional encoder. By temporarily increasing the coding rate during a frame, information only fills an information part of a frame in a compressed mode, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.

대표청구항 ▼

[ What is claimed is:] [1.] A method of code division multiple access in cellular communications, wherein information is transmitted in frames having a specific time duration, said method comprising the steps of:channel encoding a symbol stream associated with a frame to be transmitted to produce a

[ What is claimed is:] [1.] A method of code division multiple access in cellular communications, wherein information is transmitted in frames having a specific time duration, said method comprising the steps of:channel encoding a symbol stream associated with a frame to be transmitted to produce a coded symbol stream;selectively increasing a channel coding rate of said coded symbol stream to generate a compressed mode frame, wherein a compressed mode frame includes at least one first part having a time duration less than said specific time duration and containing a complete coded information signal, and a second part;impressing said coded symbol stream to be transmitted on a signature sequence to produce a spread information signal; andtransmitting said coded, spread information signal as either a normal frame or as said compressed frame based upon a result of said selective increasing step.