Back to results
US 2010/0075706 A1Published application
Reference signal design for lte a
AssigneeQUALCOMM Incorporated
InventorsJuan Montojo, Ravi Palanki, Amir Farajidana, Kapil Bhattad
Life of this patent
Estimating the term…
Abstract
Systems and methodologies are described that facilitate creating antenna ports to correspond to two or more groups of user equipment (UEs). The subject innovation can organize two or more groups of user equipment and signal to each of the two or more groups a respective antenna port. The subject innovation can further communicate mapping information, a reference signal, or delay related to a linear combination in order to identify antenna ports. Based on such communicated information, the reference signal can be decoded in order to identify each antenna port.
Claims100
A method used in a wireless communications system, comprising:
- identifying at least two groups of user equipment (UEs);
- signaling a different number of antennas ports to the least two group of UEs;
- and
- creating antenna ports corresponding to each group of UEs, wherein each antenna port includes a subset of a number of physical transmit antennas and a number of antenna ports is the number of signaled antenna ports to that group of UEs.
1 more element
A wireless communications apparatus, comprising:
- at least one processor configured to:
- identify at least two groups of user equipment (UEs);
- signal a different number of antennas ports to the least two group of UEs;
- create at least one antenna ports corresponding to each group of UEs, wherein each antenna port includes a subset of a number of physical transmit antennas and a number of antenna ports is the number of signaled antenna ports to that group of UEs;
- and
- a memory coupled to the at least one processor.
3 more elements
A wireless communications apparatus that optimizes configuration of transmit antennas, comprising:
- means for identifying at least two groups of user equipment (UEs);
- means for signaling a different number of antennas ports to the least two group of UEs;
- and
- means for creating antenna ports corresponding to each group of UEs, wherein each antenna port includes a subset of a number of physical transmit antennas and a number of antenna ports is the number of signaled antenna ports to that group of UEs.
1 more element
A computer program product, comprising:
- a computer-readable medium comprising:
- code for causing at least one computer to identify at least two groups of user equipment (UEs);
- code for causing at least one computer to signal a different number of antennas ports to the least two group of UEs;
- code for causing at least one computer to create antenna ports corresponding to each group of UEs, wherein each antenna port includes a subset of a number of physical transmit antennas and a number of antenna ports is the number of signaled antenna ports to that group of UEs.
1 more element
A method used in a wireless communications system that facilitates identifying a set of antenna ports, comprising:
- receiving a mapping information that includes at least one of a delay and a linear combination employed to transmit a reference signal related to the set of antenna ports;
- receiving a reference signal related to the antenna ports;
- and
- decoding the reference signal related to the set of antenna ports in order to identify each antenna port, wherein the decoding utilizes the mapping information.
1 more element
A method used in wireless communication systems, comprising
- utilizing a transmitted reference signal for antenna ports of a first group of UEs for at least one of a measurement, a feedback to a base station, or a demodulation technique;
- and
- utilizing a transmitted reference signals for antenna ports of a second group of UEs for a measurement and a feedback to a base station.
A wireless communications apparatus, comprising:
- at least one processor configured to:
- receive a mapping information that includes at least one of a delay and a linear combination employed to transmit a reference signal related to a set of antenna ports;
- receive a reference signal related to the antenna ports;
- decode the reference signal related to the set of antenna ports in order to identify each antenna port, wherein the decoding utilizes the mapping information;
- and
- a memory coupled to the at least one processor.
3 more elements
A wireless communications apparatus, comprising:
- at least one processor configured to:
- utilize a transmitted reference signal for antenna ports of a first group of UEs for at least one of a measurement, a feedback to a base station, or a demodulation technique;
- and
- utilize a transmitted reference signals for antenna ports of a second group of UEs for a measurement and a feedback to a base station;
- and
- a memory coupled to the at least one processor.
3 more elements
A wireless communications apparatus that identifying a set of antenna ports within a wireless communications environment, comprising:
- means for receiving a mapping information that includes at least one of a delay and a linear combination employed to transmit a reference signal related to the set of antenna ports;
- means for receiving a reference signal related to the antenna ports;
- and
- means for decoding the reference signal related to the set of antenna ports in order to identify each antenna port, wherein the decoding utilizes the mapping information.
1 more element
A wireless communications apparatus within a wireless communications environment, comprising:
- means for utilizing a transmitted reference signal for antenna ports of a first group of UEs for at least one of a measurement, a feedback to a base station, or a demodulation technique;
- and
- means for utilizing a transmitted reference signals for antenna ports of a second group of UEs for a measurement and a feedback to a base station.
A computer program product, comprising:
- a computer-readable medium comprising:
- code for causing at least one computer to receive a mapping information that includes at least one of a delay and a linear combination employed to transmit a reference signal related to a set of antenna ports;
- code for causing at least one computer to receive a reference signal related to the antenna ports;
- and
- code for causing at least one computer to decode the reference signal related to the set of antenna ports in order to identify each antenna port, wherein the decoding utilizes the mapping information.
2 more elements
A computer program product, comprising:
- a computer-readable medium comprising:
- code for causing at least one computer to utilize a transmitted reference signal for antenna ports of a first group of UEs for at least one of a measurement, a feedback to a base station, or a demodulation technique;
- and
- code for causing at least one computer to utilize a transmitted reference signals for antenna ports of a second group of UEs for a measurement and a feedback to a base station.
1 more element
A method used in a wireless communications system, comprising:
- identifying at least two groups of user equipment (UEs);
- creating UE specific antenna ports corresponding to a specific group of UEs;
- transmitting at least one reference signal related to the UE specific antenna ports in a Physical Downlink Shared Channel (PDSCH) region assigned to at least one specific group of UEs;
- employing the UE specific antenna ports along with respective antenna ports defined for a disparate group of UEs to create beams for transmitting PDSCH to the specific group of UEs;
- and
- estimating a channel from the antenna ports based on at least one of the following:
- a reference signal related to at least one of the UE specific antenna ports or a disparate antenna port;
- or
- a mapping information that relates the reference signal to a beam direction used for transmission of PDSCH.
6 more elements
A wireless communications apparatus, comprising:
- at least one processor configured to:
- identify at least two groups of user equipment (UEs);
- create UE specific antenna ports corresponding to a specific group of UEs;
- transmit at least one reference signal related to the UE specific antenna ports in a Physical Downlink Shared Channel (PDSCH) region assigned to at least one specific group of UEs;
- employ the UE specific antenna ports along with respective antenna ports defined for a disparate group of UEs to create beams for transmitting PDSCH to the specific group of UEs;
- estimate a channel from the antenna ports based on at least one of the following:
- a reference signal related to at least one of the UE specific antenna ports or a disparate antenna port;
- or
- a mapping information that relates the reference signal to a beam direction used for transmission of PDSCH, and
- a memory coupled to the at least one processor.
7 more elements
A wireless communications apparatus within a wireless communications environment, comprising:
- means for identifying at least two groups of user equipment (UEs);
- means for creating UE specific antenna ports corresponding to a specific group of UEs;
- means for transmitting at least one reference signal related to the UE specific antenna ports in a Physical Downlink Shared Channel (PDSCH) region assigned to at least one specific group of UEs;
- means for employing the UE specific antenna ports along with respective antenna ports defined for a disparate group of UEs to create beams for transmitting PDSCH to the specific group of UEs;
- and
- means for estimating a channel from the antenna ports based on at least one of the following:
- a reference signal related to at least one of the UE specific antenna ports or a disparate antenna port;
- or
- a mapping information that relates the reference signal to a beam direction used for transmission of PDSCH.
6 more elements
A computer program product, comprising:
- a computer-readable medium comprising:
- code for causing at least one computer to identify at least two groups of user equipment (UEs);
- code for causing at least one computer to create UE specific antenna ports corresponding to a specific group of UEs;
- code for causing at least one computer to transmit at least one reference signal related to the UE specific antenna ports in a Physical Downlink Shared Channel (PDSCH) region assigned to at least one specific group of UEs;
- code for causing at least one computer to employ the UE specific antenna ports along with respective antenna ports defined for a disparate group of UEs to create beams for transmitting PDSCH to the specific group of UEs;
- and
- code for causing at least one computer to estimate a channel from the antenna ports based on at least one of the following:
- a reference signal related to at least one of the UE specific antenna ports or a disparate antenna port;
- or
- a mapping information that relates the reference signal to a beam direction used for transmission of PDSCH.
7 more elements
Dependencies are inferred from the claim text.