Back to results
US 8,284,652 B2Granted
Enhanced forward link transmission
AssigneeQUALCOMM Incorporated
InventorsYu-Cheun Jou, Rashid Ahmed Akbar Attar, Jun Ma
Life of this patent
Estimating the term…
Abstract
A method for processing forward link channel signals generated by a CDMA base station includes time sharing by several mobile stations of spreading codes, which are orthogonal codes such as Walsh Code, and code-combining soft/softer handoff across sectors in the mobile station active set to increase dimensions on the CDMA2000 and WCDMA downlink while minimizing intra-sector interference. Since different parts of a packet or frame are transmitted to the user by the different base stations in the active set, earlier decoding and therefore early packet termination is enabled.
Claims29
A method comprising:
- receiving at a first mobile station a first component of a first signal transmitted by a first base station, wherein the first signal comprises:
- the first component that has been coded using a spreading code;
- and
- a second component that has been coded using the spreading code;
- wherein the first component is time domain multiplexed with the second component;
- receiving at the first mobile station a third component of a second signal transmitted by a second base station;
- wherein the second signal comprises:
- the third component that has been coded using the spreading code;
- and
- a fourth component that has been coded using the spreading code;
- wherein the third component is time domain multiplexed with the fourth component;
- decoding at the first mobile station the first component and the third component;
- wherein the first mobile station is in at least one of a soft or softer handoff condition with the first base station and the second base station, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
10 more elements
A method comprising:
- receiving at a first mobile station a first signal transmitted by a first base station;
- wherein the first signal comprises:
- a first component that has been coded using a spreading code;
- and
- a second component that has been coded using the spreading code;
- wherein the first component is time domain multiplexed with the second component;
- receiving at the first mobile station a second signal transmitted by a second base station;
- wherein the second signal comprises:
- a third component that has been coded using the spreading code;
- and
- a fourth component that has been coded using the spreading code;
- wherein the third component is time domain multiplexed with the fourth component;
- decoding at the first mobile station the first component and the third component;
- and
- wherein the first component is different than the third component and the second component is different than the fourth component, and wherein the first component and the third component combined form a message.
12 more elements
A system comprising:
- an antenna configured to transmit and receive data from a first base station and a second base station, wherein:
- the data received from the first base station comprises a first component and a second component that have been coded using a spreading code;
- the data received from the second base station comprises a third component and a fourth component that have been coded using the spreading code;
- a memory configured to store instructions and to store data comprising the first component and the third component;
- a processor configured to use the instructions to decode the first component and the third component;
- and
- wherein the system is in at least one of a soft or softer handoff condition with the first base station and the second base station, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
4 more elements
A system comprising:
- a means for receiving at a first mobile station a first component of a first signal transmitted by a first base station, wherein the first signal comprises:
- the first component that has been coded using a spreading code;
- and
- a second component that has been coded using the spreading code;
- wherein the first component is time domain multiplexed with the second component;
- a means for receiving at the first mobile station a third component of a second signal transmitted by a second base station;
- wherein the second signal comprises:
- the third component that has been coded using the spreading code;
- and
- a fourth component that has been coded using the spreading code;
- wherein the third component is time domain multiplexed with the fourth component;
- a means for decoding at the first mobile station the first component and the third component as part of
- at least one of a soft or softer handoff transitioning between the first base station and the second base station, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
10 more elements
A computer program product comprising:
- a non-transitory processor-readable medium storing processor-readable instructions configured to cause a processor to:
- collect a first component of a first signal transmitted by a first base station, wherein the first signal comprises:
- the first component that has been coded using a spreading code;
- and
- a second component that has been coded using the spreading code;
- wherein the first component is time domain multiplexed with the second component;
- collect a third component of a second signal transmitted by a second base station;
- wherein the second signal comprises:
- the third component that has been coded using the spreading code;
- and
- a fourth component that has been coded using the spreading code;
- wherein the third component is time domain multiplexed with the fourth component;
- decode the first component and the third component;
- and
- transition between the first base station and the second base station with at least one of a soft or softer handoff, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
12 more elements
A method comprising:
- dividing a first frame into components comprising a first component and a second component, wherein the first component is time domain multiplexed with the second component;
- dividing a second frame into components comprising a third component and a fourth component, wherein the third component is time domain multiplexed with the fourth component;
- encoding the first component, the second component, the third component and the fourth component with a spreading code;
- transmitting at a first base station a first signal comprising the encoded first component and the encoded second component;
- transmitting at a second base station a second signal comprising the encoded third component and the encoded fourth component, wherein the second signal is transmitted at substantially the same time as the first signal is transmitted;
- and
- determining whether a third signal has been received from a mobile station indicating that transmission of the first signal and the second signal can be terminated;
- and
- upon determining that the third signal has been received, stopping transmission of the first signal and the second signal, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
6 more elements
A system comprising:
- a processor configured to:
- divide a first frame into components comprising a first component and a third component, wherein the first component is time domain multiplexed with the second component;
- divide a second frame into components comprising a second component and a fourth component, wherein the third component is time domain multiplexed with the fourth component;
- encode the first component, the second component, the third component and the fourth component with a spreading code;
- a base station interface configured to:
- transmit the encoded first component and the encoded second component to a first base station;
- transmit the encoded third component and the encoded fourth component to a second base station;
- the first base station configured to transmit the encoded first component and the encoded second component;
- the second base station configured to transmit the encoded third component and the encoded fourth component at substantially the same time as the first base station transmits the encoded first component and the encoded second component;
- and
- wherein the first base station and the second base station are in at least one of soft or softer handoff conditions with a mobile station, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
8 more elements
A system comprising:
- a means for encoding a first component, a second component, a third component and a fourth component with a spreading code, wherein a first frame is divided into components comprising the first component and the third component, wherein the first component is time domain multiplexed with the second component, wherein a second frame is divided into components comprising the second component and the fourth component, wherein the third component is time domain multiplexed with the fourth component;
- a means for transmitting from a first base station the encoded first component and the encoded second component;
- and
- a means for transmitting from a second base station the encoded third component and the encoded fourth component at substantially the same time as the first base station transmits the encoded first component and the encoded second component as part of
- a means for at least one of a soft or softer handoff transitioning between a mobile station, the first base station and the second base station, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
2 more elements
A computer program product comprising:
- a non-transitory processor-readable medium storing processor-readable instructions configured to cause a processor to:
- divide a first frame into components comprising a first component and a third component, wherein the first component is time domain multiplexed with the second component;
- divide a second frame into components comprising a second component and a fourth component, wherein the third component is time domain multiplexed with the fourth component;
- encode the first component, the second component, the third component and the fourth component with a spreading code;
- transmit at a first base station the encoded first component and the encoded second component;
- transmit at a second base station the encoded third component and the encoded fourth component at substantially the same time as the first base station transmits the encoded first component and the encoded second component, wherein the first component and the third component combined form a message, wherein the first component is different than the third component.
3 more elements
Dependencies are inferred from the claim text.