Techniques for long term evolution licensed assisted-access(LTE LAA) coexistence with other radio access technologies

An apparatus for wireless communications, comprising:

• means for receiving, at a user equipment (UE), a radio resource control (RRC) message from a base station, wherein the RRC message includes channel information that indicates a channel within a carrier that is located in an unlicensed spectrum and configured for a secondary cell (Scell) of the base station for uplink transmissions to the base station, and wherein a bandwidth of the channel is smaller than a bandwidth of the carrier;
• means for searching, by the UE, for a discovery reference signal (DRS) associated with the Scell based at least on the information received in the RRC message, wherein said means for searching for the DRS further comprises
• means for decoding the DRS within a smaller bandwidth than the bandwidth of the channel, wherein the DRS contains information indicating a location of the channel within the carrier;
• and
• means for transmitting, from the UE, on the channel detected during the search based on the DRS.

A computer readable medium storing computer executable code for wireless communications, comprising:

• code for receiving, at a user equipment (UE), a radio resource control (RRC) message from a base station, wherein the RRC message includes channel information that indicates a channel within a carrier that is located in an unlicensed spectrum and configured for a secondary cell (Scell) of the base station for uplink transmissions to the base station, and wherein a bandwidth of the channel is smaller than a bandwidth of the carrier;
• code for searching, by the UE, for a discovery reference signal (DRS) associated with the Scell based at least on the information received in the RRC message, wherein said code for searching for the DRS further comprises
• code for decoding the DRS within a smaller bandwidth than the bandwidth of the channel, wherein the DRS contains information indicating a location of the channel within the carrier;
• and
• code for transmitting, from the UE, on the channel detected during the search based on the DRS.

An apparatus for wireless communications, comprising:

• a memory configured to store data;
• and
• one or more processors communicatively coupled with the memory, wherein the one or more processors and the memory are configured to:
• receive, at a user equipment (UE), a radio resource control (RRC) message from a base station, wherein the RRC message includes channel information that indicates a channel within a carrier that is located in an unlicensed spectrum and configured for a secondary cell (Scell) of the base station for uplink transmissions to the base station, and wherein a bandwidth of the channel is smaller than a bandwidth of the carrier;
• search, by the UE, for a discovery reference signal (DRS) associated with the Scell based at least on the information received in the RRC message, wherein to search for the DRS further comprises the one or more processors and the memory configured to
• decode the DRS within a smaller bandwidth than the bandwidth of the channel, wherein the DRS contains information indicating a location of the channel within the carrier;
• and
• transmit, from the UE, on the channel detected during the search based on the DRS.