Demodulation Reference Signal Arrangement For Uplink Coordinated Multi-Point Reception
First Claim
Patent Images
1. A method comprising:
- receiving, at a user equipment, a message for a first component carrier from a network node,where the message comprises an indication of a demodulation reference signal physical uplink shared channel mode for the first component carrier and a cyclic shift indicator field;
determining whether the demodulation reference signal physical uplink shared channel mode for the first component carrier comprises a mirror cell mode; and
in response to determining that the demodulation reference signal physical uplink shared channel mode comprises a mirror cell mode, determining a demodulation reference signal sequence based at least in part on the cyclic shift indicator field.
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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.
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Citations
20 Claims
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1. A method comprising:
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receiving, at a user equipment, a message for a first component carrier from a network node, where the message comprises an indication of a demodulation reference signal physical uplink shared channel mode for the first component carrier and a cyclic shift indicator field; determining whether the demodulation reference signal physical uplink shared channel mode for the first component carrier comprises a mirror cell mode; and in response to determining that the demodulation reference signal physical uplink shared channel mode comprises a mirror cell mode, determining a demodulation reference signal sequence based at least in part on the cyclic shift indicator field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising at least one processor;
- and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following;
to receive a message for a first component carrier from a network node, where the message comprises an indication of a demodulation reference signal physical uplink shared channel mode for the first component carrier and a cyclic shift indicator field; to determine whether the demodulation reference signal physical uplink shared channel mode for the first component carrier comprises a mirror cell mode; and in response to determining that the demodulation reference signal physical uplink shared channel mode comprises a mirror cell mode, to determine a demodulation reference signal sequence based at least in part on the cyclic shift indicator field. - View Dependent Claims (11, 12, 13)
- and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following;
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14. A computer readable medium tangibly encoded with a computer program executable by a processor to perform actions comprising:
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receiving, at a user equipment, a message for a first component carrier from a network node, where the message comprises an indication of a demodulation reference signal physical uplink shared channel mode for the first component carrier and a cyclic shift indicator field; determining whether the demodulation reference signal physical uplink shared channel mode for the first component carrier comprises a mirror cell mode; and in response to determining that the demodulation reference signal physical uplink shared channel mode comprises a mirror cell mode, determining a demodulation reference signal sequence based at least in part on the cyclic shift indicator field. - View Dependent Claims (15, 16, 17)
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18. An apparatus comprising:
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means for receiving a message for a first component carrier from a network node, where the message comprises an indication of a demodulation reference signal physical uplink shared channel mode for the first component carrier and a cyclic shift indicator field; mode determining means for determining whether the demodulation reference signal physical uplink shared channel mode for the first component carrier comprises a mirror cell mode; and sequence determining means for determining a demodulation reference signal sequence based at least in part on the cyclic shift indicator field in response to determining that the demodulation reference signal physical uplink shared channel mode comprises a mirror cell mode. - View Dependent Claims (19, 20)
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Specification