Methods and apparatus for signaling control information

A method implemented by an access node, the method comprising:

• assigning, by the access node, a corresponding user equipment (UE) identifier to each UE in a subset of a plurality of UEs served by the access node, the UE identifiers being unique within the subset of the plurality of UEs served by the access node;
• transmitting, by the access node, indications of the UE identifiers of UEs in the subset of the plurality of UEs served by the access node;
• transmitting, by the access node to a UE, sounding reference signal (SRS) configuration information, the SRS configuration information comprising associations between SRS ports and downlink channel state information reference signal (CSI-RS) ports, wherein each SRS port in the SRS ports is associated with a different corresponding set of parameters including a corresponding transmission comb, a corresponding offset associated with the corresponding transmission comb, a corresponding cyclic shift, and a corresponding orthogonal frequency division multiplex (OFDM) symbol, and wherein the UE is one of the subset of the plurality of UEs served by the access node, the transmitting the SRS configuration information comprising:
• for each UE in the subset of the plurality of UEs served by the access node, transmitting, by the access node, an indication of the corresponding UE identifier associated with the each UE, a transmit power control (TPC) command associated with an SRS, and corresponding SRS configuration information associated with the each UE, the corresponding SRS configuration information including an indication of a set of SRS port resources and an indication of an association between the SRS port resources and downlink port resources;
• transmitting, by the access node to the UE, an indication of one association between an SRS port and a downlink RS port of the associations between the SRS ports and the downlink CSI-RS ports for downlink channel state information;
• and
• transmitting, by the access node to the UE, an indication for an SRS transmission in a group downlink control information (DCI) message, the indication indicating a set of SRS ports in a plurality of sets of SRS ports of an SRS resource, the transmitting the indication for the SRS transmission comprising:
• for each UE in the subset of the plurality of UEs served by the access node, transmitting, by the access node, a corresponding TPC command associated with the each UE and the indication indicating the set of SRS ports in the plurality of sets of SRS ports.

An access node comprising:

• a non-transitory memory storage comprising instructions;
• and
• one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute the instructions to cause the access node to perform:
• assigning a corresponding user equipment (UE) identifier to each UE in a subset of a plurality of UEs served by the access node, the UE identifiers being unique within the subset of the plurality of UEs served by the access node;
• transmitting indications of the UE identifiers of UEs in the subset of the plurality of UEs served by the access node;
• transmitting, to a UE served by the access node, configuration information of a sounding reference signal (SRS) resource with a plurality of sets of SRS ports, wherein each SRS port in the plurality of sets of SRS ports of the SRS resource is associated with a different corresponding set of parameters including a corresponding transmission comb, a corresponding offset associated with the corresponding transmission comb, a corresponding cyclic shift, and a corresponding orthogonal frequency division multiplex (OFDM) symbol, and wherein the UE is one of the subset of the plurality of UEs served by the access node, the transmitting the configuration information comprising:
• for each UE in the subset of the plurality of UEs served by the access node, transmitting an indication of the corresponding UE identifier associated with the each UE, a transmit power control (TPC) command associated with an SRS, and corresponding SRS configuration information associated with the each UE, the corresponding SRS configuration information including an indication of a set of SRS port resources and an indication of an association between the SRS port resources and downlink port resources;
• transmitting, to the UE, an indication of an association between a set of SRS ports in the plurality of sets of SRS ports of the SRS resource and a set of downlink channel state information reference signal (CSI-RS) ports for downlink channel state information;
• and
• transmitting, to the UE, an indication for an SRS transmission in a group downlink control information (DCI) message, the indication indicating the set of SRS ports in the plurality of sets of SRS ports of the SRS resource, the transmitting the indication for the SRS transmission comprising:
• for each UE in the subset of the plurality of UEs served by the access node, transmitting a corresponding TPC command associated with the each UE and the indication indicating the set of SRS ports in the plurality of sets of SRS ports.

An access node comprising:

• a non-transitory memory storage comprising instructions;
• and
• one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute the instructions to cause the access node to perform:
• assigning a corresponding user equipment (UE) identifier to each UE in a subset of a plurality of UEs served by the access node, the UE identifiers being unique within the subset of the plurality of UEs served by the access node;
• transmitting indications of the UE identifiers of UEs in the subset of the plurality of UEs served by the access node;
• transmitting, to a UE, sounding reference signal (SRS) configuration information, the SRS configuration information comprising associations between SRS ports and downlink channel state information reference signal (CSI-RS) ports, wherein each SRS port in the SRS ports is associated with a different corresponding set of parameters including a corresponding transmission comb, a corresponding offset associated with the corresponding transmission comb, a corresponding cyclic shift, and a corresponding orthogonal frequency division multiplex (OFDM) symbol, and wherein the UE is one of the subset of the plurality of UEs served by the access node, the transmitting the SRS configuration information comprising:
• for each UE in the subset of the plurality of UEs served by the access node, transmitting an indication of the corresponding UE identifier associated with the each UE, a transmit power control (TPC) command associated with an SRS, and corresponding SRS configuration information associated with the each UE, the corresponding SRS configuration information including an indication of a set of SRS port resources and an indication of an association between the SRS port resources and downlink port resources;
• transmitting, to the UE, an indication of one association between an SRS port and a downlink RS port of the associations between the SRS ports and the downlink CSI-RS ports for downlink channel state information;
• and
• transmitting, to the UE, an indication for an SRS transmission in a group downlink control information (DCI) message, the indication indicating a set of SRS ports in a plurality of sets of SRS ports of an SRS resource, the transmitting the indication for the SRS transmission comprising:
• for each UE in the subset of the plurality of UEs served by the access node, transmitting, by the access node, a corresponding TPC command associated with the each UE and the indication indicating the set of SRS ports in the plurality of sets of SRS ports.