Abstract: In accordance with the exemplary embodiments there is at least a method and apparatus to configure more than one component carrier of an unlicensed band, wherein some of the more than one component carriers are active and a remainder are turned off; select at least one turned off component carrier of the more than one component carrier, wherein each of the selected at least one turned off component carrier is configured as an auxiliary component carrier linked to one or more of the active component carriers of the unlicensed band; and send a data burst over an auxiliary component carrier in response to a linked active component carrier being unavailable to carry the data burst.

Abstract: A method includes determining a base sequence, cyclic shift, and UE-specific portion of a frequency comb, applying the cyclic shift to the base sequence to create a shifted sequence, and selecting a portion of the shifted sequence as a user equipment-specific SRS. The selected portion of the shifted sequence corresponds to the portion of the frequency comb. A second method includes assigning a cyclic shift and a UE-specific portion of a frequency comb to a UE, where the cyclic shift is for use by the UE to apply the cyclic shift to the determined base sequence to create a shifted sequence. The portion of the frequency comb is for the UE to select a portion of the shifted sequence for SRS. The method includes transmitting indications of the base sequence, the cyclic shift, and the portion of the frequency comb. Auxiliary DMRS may be provided using SRS resources.

Abstract: A method includes determining a base sequence, cyclic shift, and UE-specific portion of a frequency comb, applying the cyclic shift to the base sequence to create a shifted sequence, and selecting a portion of the shifted sequence as a user equipment-specific SRS. The selected portion of the shifted sequence corresponds to the portion of the frequency comb. A second method includes assigning a cyclic shift and a UE-specific portion of a frequency comb to a UE, where the cyclic shift is for use by the UE to apply the cyclic shift to the determined base sequence to create a shifted sequence. The portion of the frequency comb is for the UE to select a portion of the shifted sequence for SRS. The method includes transmitting indications of the base sequence, the cyclic shift, and the portion of the frequency comb. Auxiliary DMRS may be provided using SRS resources.

Abstract: A method for providing a DM RS arrangement for CoMP reception is described. The method includes receiving (e.g., at a receiver), at a UE, a message for a first CC from a network node. The message includes an indication of a DM RS PUSCH mode for the first CC and a CSI field. The method also includes determining (e.g., at a processor) whether the DM RS PUSCH mode for the first CC includes a mirror cell mode. In response to determining that the DM RS PUSCH mode includes a mirror cell mode, the method includes determining (e.g., at a processor) a DM RS sequence based at least in part on the CSI field. Apparatus and computer readable media are also described.

Abstract: In one exemplary embodiment of the invention, a method includes: receiving, by a mobile device, an indication of a base sequence and an indication of a cyclic shift from a base station; and obtaining, by the mobile device, a mobile device-specific demodulation reference signal sequence by calculating a mobile-device specific sequence and selecting a portion of the calculated mobile-device specific sequence to use as the mobile device-specific demodulation reference signal sequence, where calculating the mobile-device specific sequence includes applying the cyclic shift indicated by the received indication of a cyclic shift to the base sequence indicated by the received indication of a base sequence, where the selected portion of the calculated mobile-device specific sequence corresponds to a mobile-device specific physical resource block allocation.