초록 ▼

A low cost solution for providing wireless multi-rate packet data communications between a transmitting unit and a receiving unit on a single spread spectrum channel. The transmitting unit and receiving unit are operable to change communications modes at any given time to provide packet data communi

A low cost solution for providing wireless multi-rate packet data communications between a transmitting unit and a receiving unit on a single spread spectrum channel. The transmitting unit and receiving unit are operable to change communications modes at any given time to provide packet data communications at any given data rate for any given duration. In general, the transmitting unit is operable to change the coding gain of the transmitted spread spectrum to establish a communications mode providing a given data rate for communication to the receiving unit. In one embodiment, the transmitting unit first establishes a regular communications mode, wherein the transmitting unit generates a spread spectrum packet data signal having a high coding gain, thus providing low rate, highly reliable communications over the channel. Then, at any given time, the transmitting unit sends an escape sequence instructing the receiver to switch to a temporary communications mode, wherein the transmitting unit generates a signal having a lower coding gain, and thus provide a higher data rate for such user services requiring high rate communications.

대표청구항 ▼

[ What is claimed is:] [19.] A method for providing multi-rate packet data communications between a transmitter and a receiving element communicating over a channel on a wireless communications system, the channel having a given coherence interval, the method comprising the steps of:establishing a f

[ What is claimed is:] [19.] A method for providing multi-rate packet data communications between a transmitter and a receiving element communicating over a channel on a wireless communications system, the channel having a given coherence interval, the method comprising the steps of:establishing a first communication mode wherein the transmitter generates a signal having a coding gain for transmitting said packet data to the receiving element; andtransmitting an escape instruction to the receiving element at any given time to instruct said receiving element to switch to a second communication mode, the transmitter being operable to generate a signal having a given coding gain during said second communication mode;said coding gain of said first communication mode establishing a first data rate between said transmitter and said receiving element, and said given coding gain of said second communication mode establishing a second data rate between said transmitter and said receiving element;said transmitter being operable to change and set said coding gain of said first and said second communication modes at any given time to thereby change said first and said second data rate at said any given time.