Reciprocal channel sounding reference signal allocation and configuration

A method of wireless communication, comprising:

• receiving, at a user equipment (UE), a request for a sounding reference signal (SRS) from a base station, wherein the request for the SRS includes configuration information about the SRS;
• obtaining, by the UE, an elongated duration for the SRS from the configuration information, the elongated duration for an uplink SRS transmission comprising an allotted uplink period of a subframe and at least a portion of an allotted downlink period of the subframe;
• and
• transmitting, from the UE to the base station, the SRS based on the received SRS configuration information during the allotted uplink period of the subframe and the at least portion of the allotted downlink period of the subframe.

A base station, comprising:

• a processor configured to:
• include an elongated duration for a sounding reference signal (SRS) in configuration information, the elongated duration for an uplink SRS transmission comprising an allotted uplink period of a subframe and at least a portion of an allotted downlink period of the subframe;
• and
• generate a request for the sounding reference signal (SRS) from a user equipment (UE), wherein the request for the SRS includes the configuration information;
• and
• a transceiver configured to:
• transmit the request to the UE;
• and
• receive the SRS from the UE during the allotted uplink period of the subframe and the at least portion of the allotted downlink period of the subframe in response to the request.

A user equipment (UE), comprising:

• a transceiver configured to receive, from a base station, a request for a sounding reference signal (SRS), wherein the request for the SRS includes configuration information about the SRS;
• and
• a processor configured to:
• obtain an elongated duration for the SRS from the configuration information, the elongated duration for an uplink SRS transmission comprising an allotted uplink period of a subframe and at least a portion of an allotted downlink period of the subframe;
• and
• generate the SRS based on the received SRS configuration information,
• wherein the transceiver is further configured to transmit the generated SRS to the base station during the allotted uplink period of the subframe and the at least portion of the allotted downlink period of the subframe.

A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:

• code for causing a base station to include an elongated duration for a sounding reference signal (SRS) in configuration information, the elongated duration for an uplink SRS transmission comprising an allotted uplink period of a subframe and at least a portion of an allotted downlink period of the subframe;
• code for causing the base station to transmit a request for the SRS from a user equipment (UE), wherein the request for the SRS includes the configuration information;
• and
• code for causing the base station to receive the SRS from the UE during the allotted uplink period of the subframe and the at least portion of the allotted downlink period of the subframe.

A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:

• code for causing a user equipment (UE) to receive a request for a sounding reference signal (SRS) from a base station, wherein the request for the SRS includes configuration information about the SRS;
• code for causing the UE to obtain an elongated duration for the SRS from the configuration information, the elongated duration for an uplink SRS transmission comprising an allotted uplink period of a subframe and at least a portion of an allotted downlink period of the subframe;
• and
• code for causing the UE to transmit the SRS based on the received SRS configuration information to the base station during the allotted uplink period of the subframe and the at least portion of the allotted downlink period of the subframe.