Timing synchronization for downlink (DL) transmissions in coordinated multipoint (CoMP) systems
First Claim
1. An apparatus of a user equipment (UE) operable to adjust a receiver timing, the apparatus comprising:
- memory; and
one or more processors configured to;
decode, at the UE, a plurality of channel-state information reference signals (CSI-RSs) received from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system;
generate, at the UE, a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes;
determine, at the UE, a composite received RS timing from the plurality of received RS timings based, in part, on an earliest received RS timing, wherein the composite received RS timing includes one or more of;
transmitter (TX) delay, propagation delay of CSI-RSs received from the plurality of cooperating nodes included in the coordination set of the CoMP system, or receiver (RX) delay; and
adjust, at the UE, the receiver timing based on the composite received RS timing.
2 Assignments
0 Petitions
Accused Products
Abstract
Technology for a user equipment (UE) operable to adjust a receiver timing is disclosed. The UE can decode a plurality of channel-state information reference signals (CSI-RSs) received from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system. The UE can generate a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes. The UE can determine a composite received RS timing from the plurality of received RS timings. The UE can adjust the receiver timing based on the composite received RS timing.
-
Citations
19 Claims
-
1. An apparatus of a user equipment (UE) operable to adjust a receiver timing, the apparatus comprising:
-
memory; and one or more processors configured to; decode, at the UE, a plurality of channel-state information reference signals (CSI-RSs) received from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system; generate, at the UE, a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes; determine, at the UE, a composite received RS timing from the plurality of received RS timings based, in part, on an earliest received RS timing, wherein the composite received RS timing includes one or more of;
transmitter (TX) delay, propagation delay of CSI-RSs received from the plurality of cooperating nodes included in the coordination set of the CoMP system, or receiver (RX) delay; andadjust, at the UE, the receiver timing based on the composite received RS timing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A user equipment (UE) operable to adjust a receiver timing, the UE comprising:
-
a transceiver configured to receive a plurality of channel-state information reference signals (CSI-RSs) from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system; and one or more processors configured to; generate a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes; determine a composite received RS timing from the plurality of received RS timings based, in part, on an earliest received RS timing, wherein the composite received RS timing includes one or more of;
transmitter (TX) delay, propagation delay of CSI-RSs received from the plurality of cooperating nodes included in the coordination set of the CoMP system, or receiver (RX) delay; andadjust the receiver timing based on the composite received RS timing. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. At least one non-transitory machine readable storage medium having instructions embodied thereon for adjusting a receiver timing at a user equipment (UE), the instructions when executed by one or more processors at the UE perform the following:
-
decoding, at the UE, a plurality of channel-state information reference signals (CSI-RSs) received from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system; generating, at the UE, a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes; determining, at the UE, a composite received RS timing from the plurality of received RS timings based, in part, on an earliest received RS timing, wherein the composite received RS timing includes one or more of;
transmitter (TX) delay, propagation delay of CSI-RSs received from the plurality of cooperating nodes included in the coordination set of the CoMP system, or receiver (RX) delay; andadjusting, at the UE, the receiver timing based on the composite received RS timing. - View Dependent Claims (15, 16, 17, 18, 19)
-
Specification