Signaling for configuration of downlink coordinated multipoint communications
First Claim
1. An apparatus to be employed by a user equipment (UE), the apparatus comprising:
- communications circuitry to communicate with an evolved Node B (eNB) over a wireless communications network;
feedback circuitry coupled with the communications circuitry, the feedback circuitry to;
receive, via cell-specific signaling, channel state information (CSI) reference signal (RS) parameters for individual transmission points of a coordinated multi-point (CoMP) Resource Management Set including a plurality of transmission points, wherein the CSI-RS parameters include a predetermined number;
generate candidate feedback information for the individual transmission points of the CoMP Resource Management Set and transmit the candidate feedback information to the eNB via the communications circuitry;
receive a first message, from the eNB via UE-specific signaling, to indicate individual transmission points of the CoMP Resource Management set that are included in a CoMP Measurement Set, wherein the first message includes a first bitmap, and wherein individual bits of the first bitmap correspond to respective individual transmission points of the CoMP Resource Management set to indicate whether the individual transmission point is included in the CoMP Measurement Set, and wherein the individual bits are ordered in the first bitmap according to indices corresponding to the individual transmission points;
generate CSI-RS feedback information for the individual transmission points of the CoMP Measurement Set based on the received CSI-RS parameters, wherein the CSI-RS feedback information is different from the candidate feedback information;
select a number transmission points of the CoMP Measurement Set based on quality of respective transmissions, wherein the number is less than or equal to the predetermined number;
transmit the generated CSI-RS feedback information for the selected number of transmission points to the eNB via the communications circuitry; and
receive a second message, from the eNB via UE specific signaling, including a second bitmap to update the individual transmission points included in the CoMP Measurement Set.
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Accused Products
Abstract
Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for configuration of downlink coordinated multi-point (CoMP) communications in a wireless communication network. A user equipment (UE) may receive channel state information (CSI) reference signal (RS) parameters, from an evolved Node B (eNB), for individual transmission points of a coordinated multi-point (CoMP) Measurement Set including a plurality of transmission points. The UE may generate CSI-RS feedback information for the individual transmission points of the CoMP Measurement Set, and may transmit the generated CSI-RS feedback information for one or more of the individual transmission points to the eNB. The UE may receive a transmission from the eNB updating the individual transmission points included in the CoMP Measurement Set.
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Citations
18 Claims
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1. An apparatus to be employed by a user equipment (UE), the apparatus comprising:
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communications circuitry to communicate with an evolved Node B (eNB) over a wireless communications network; feedback circuitry coupled with the communications circuitry, the feedback circuitry to; receive, via cell-specific signaling, channel state information (CSI) reference signal (RS) parameters for individual transmission points of a coordinated multi-point (CoMP) Resource Management Set including a plurality of transmission points, wherein the CSI-RS parameters include a predetermined number; generate candidate feedback information for the individual transmission points of the CoMP Resource Management Set and transmit the candidate feedback information to the eNB via the communications circuitry; receive a first message, from the eNB via UE-specific signaling, to indicate individual transmission points of the CoMP Resource Management set that are included in a CoMP Measurement Set, wherein the first message includes a first bitmap, and wherein individual bits of the first bitmap correspond to respective individual transmission points of the CoMP Resource Management set to indicate whether the individual transmission point is included in the CoMP Measurement Set, and wherein the individual bits are ordered in the first bitmap according to indices corresponding to the individual transmission points; generate CSI-RS feedback information for the individual transmission points of the CoMP Measurement Set based on the received CSI-RS parameters, wherein the CSI-RS feedback information is different from the candidate feedback information; select a number transmission points of the CoMP Measurement Set based on quality of respective transmissions, wherein the number is less than or equal to the predetermined number; transmit the generated CSI-RS feedback information for the selected number of transmission points to the eNB via the communications circuitry; and receive a second message, from the eNB via UE specific signaling, including a second bitmap to update the individual transmission points included in the CoMP Measurement Set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus to be employed by an evolved Node B (eNB) for managing coordinated multipoint (CoMP) communications on a wireless communications network, comprising:
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communications circuitry to communicate with a user equipment (UE) over the wireless communications network; CoMP management circuitry coupled to the communications circuitry, the CoMP management circuitry to; transmit, via cell-specific signaling, channel state information (CSI) reference signal (RS) parameters to the UE for individual transmission points of a CoMP Resource Management Set including a plurality of transmission points and a threshold number indicating a maximum quantity of transmission points for which the UE is to send fast CSI-RS feedback information; receive candidate feedback information for the individual transmission points of the CoMP Resource Management Set and transmit the candidate feedback information to the eNB via the communications circuitry; transmit a first message, to the UE via UE-specific signaling, to indicate individual transmission points of the CoMP Resource Management set that are included in a CoMP Measurement Set, wherein the first message includes a bitmap, and wherein individual bits of the bitmap correspond to respective individual transmission points of the CoMP Resource Management set to indicate whether the individual transmission point is included in the CoMP Measurement Set, and wherein the individual bits are ordered in the bitmap according to indices corresponding to the individual transmission points; receive, from the UE, fast CSI-RS feedback information for a number of the individual transmission points of the CoMP Measurement Set, wherein the number is less than or equal to the threshold number, and wherein the fast CSI-RS feedback information is based on the transmitted CSI-RS parameters and is different than the candidate feedback information; and update the individual transmission points included in the CoMP Measurement Set; and send a second message to notify the UE of the updated CoMP Measurement Set. - View Dependent Claims (10, 11, 12)
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13. A method for managing coordinated multipoint (CoMP) communications with a user equipment (UE), comprising:
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transmitting, to the UE via radio resource control (RRC) signaling, channel state information (CSI) reference signal (RS) parameters for individual transmission points of a coordinated multi-point (CoMP) Resource Management Set including a plurality of transmission points and a threshold number indicating a maximum quantity of transmission points for which the UE is to send CSI-RS fast feedback information; receiving, from the UE, candidate feedback information for the individual transmission points of the CoMP Resource Management Set; selecting a CoMP Measurement Set from the CoMP Resource Management Set; transmitting, to the UE a first medium access control (MAC) control element (CE) to indicate the transmission points of the CoMP Resource Management Set included in the CoMP measurement set, wherein the first MAC CE includes a bitmap, and wherein individual bits of the bitmap correspond to respective individual transmission points of the CoMP Resource Management set to indicate whether the individual transmission point is included in the CoMP Measurement Set, and wherein the individual bits are ordered in the bitmap according to indices corresponding to the individual transmission points; receiving, from the UE, channel state information (CSI) reference signal (RS) fast feedback information for a number of the individual transmission points of the CoMP Measurement Set, wherein the number is less than or equal to the threshold number, and wherein the CSI-RS fast feedback information is based on the transmitted CSI-RS parameters and is different than the candidate feedback information; and updating the CoMP Measurement Set based on the received CSI-RS fast feedback information and the received candidate feedback information; and transmitting a second MAC CE to the UE to indicate the transmission points included in the updated CoMP Measurement Set. - View Dependent Claims (14, 15, 16)
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17. One or more non-transitory computer-readable media having instructions, stored thereon, that, when executed cause a user equipment (UE) to:
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receive channel state information (CSI) reference signal (RS) parameters, from an evolved Node B (eNB) via radio resource control (RRC) signaling, for individual transmission points of a coordinated multi-point (CoMP) Resource Management Set including a plurality of transmission points, wherein the CSI-RS parameters include a threshold number to indicate a maximum quantity of transmission points for which the UE is to send CSI-RS fast feedback information; receive a transmission, from the eNB, including a first medium access control (MAC) control element (CE) to indicate to the UE the individual transmission points of the CoMP Resource Management Set that are included in a CoMP Measurement Set, wherein the CoMP Measurement Set is a subset of the CoMP Resource Management Set, wherein the first MAC CE includes a bitmap, and wherein individual bits of the bitmap correspond to respective individual transmission points of the CoMP Resource Management set to indicate whether the individual transmission point is included in the CoMP Measurement Set, and wherein the individual bits are ordered in the bitmap according to indices corresponding to the individual transmission points; generate candidate feedback information for the individual transmission points of the CoMP Resource Management Set and transmit the candidate feedback information to the eNB; generate CSI-RS fast feedback information for the individual transmission points of the CoMP Measurement Set based on the CSI-RS parameters, wherein the CSI-RS fast feedback information is different than the candidate feedback information; select a number transmission points of the CoMP Measurement Set based on quality of respective transmissions, wherein the number is less than or equal to the threshold number; transmit the generated CSI-RS fast feedback information for the selected number of transmission points to the eNB; and receive a transmission from the eNB including a second MAC CE to update the individual transmission points included in the CoMP Measurement Set. - View Dependent Claims (18)
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Specification