Mitigation of crs misalignment in coordinated multipoint communications
AssigneeQUALCOMM Incorporated
InventorsKe Liu, Xiaoxia Zhang, Durga Prasad Malladi, Hao Xu
Life of this patent
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Abstract
Certain aspects of the present disclosure relate to a method for coordinated multipoint wireless communications. A technique for joint processing of misaligned reference signals in coordinated multipoint communications is provided. In one aspect, a cell may transmit an offsetting reference signal which, when processed by a receiving user equipment, at least partially cancels a first reference signal transmitted by the cell.
Claims85
A method for wireless communications, comprising:
- transmitting a reference signal in a first group of tones;
- transmitting an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- transmitting data in a third group of tones.
A method for wireless communications, comprising:
- receiving a reference signal in a first group of tones;
- and
- receiving an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- receiving data in a third group of tones.
An apparatus for wireless communications, comprising:
- means for transmitting a reference signal in a first group of tones;
- means for transmitting an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- means for transmitting data in a third group of tones.
An apparatus for wireless communications, comprising:
- means for receiving a reference signal in a first group of tones;
- and
- means for receiving an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- means for receiving data in a third group of tones.
An apparatus for wireless communications, comprising:
- an RS module configured to generate a reference signal;
- an offset module configured to generate an offsetting reference signal suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- a transmitter configured to transmit the reference signal in a first group of tones, to transmit the offsetting reference signal in a second group of tones, and to transmit data in a third group of tones.
An apparatus for wireless communications, comprising:
- a receiver configured to receive a reference signal in a first group of tones;
- and to receive an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- wherein the receiver is further configured to receive data in a third group of tones.
An apparatus for wireless communications, comprising:
- at least one processor configured to cause the apparatus to:
- transmit a reference signal in a first group of tones,
- transmit an offsetting reference signal in a second group of tones,
- wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal, and
- transmit data in a third group of tones;
- and
- a memory coupled to the at least one processor.
An apparatus for wireless communications, comprising:
- at least one processor configured to cause the apparatus to:
- receive a reference signal in a first group of tones,
- receive an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal, and
- receive data in a third group of tones;
- and
- a memory coupled to the at least one processor.
A computer-program product for wireless communications, the computer-program product comprising a computer-readable medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising code for:
- transmitting a reference signal in a first group of tones;
- transmitting an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- transmitting data in a third group of tones.
A computer-program product for wireless communications, the computer-program product comprising a computer-readable medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising code for:
- receiving a reference signal in a first group of tones;
- and
- receiving an offsetting reference signal in a second group of tones, wherein the offsetting reference signal is suitable for at least partially cancelling the reference signal when combined with the reference signal;
- and
- receiving data in a third group of tones.
Dependencies are inferred from the claim text.