EVOLVED MULTIMEDIA BROADCAST MULTICAST SERVICE ON ENHANCED COMPONENT CARRIERS
First Claim
1. A method of communication at a wireless device, comprising:
- determining that a set of resources is scheduled for an evolved multimedia broadcast multicast service (eMBMS);
determining that a first symbol period of the set of resources is associated with a cell-specific reference signal (CRS) preamble and a second symbol period of the set of resources is a unicast control symbol period; and
identifying a control message in the unicast control symbol period indicating a unicast data transmission utilizing the set of resources.
1 Assignment
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Accused Products
Abstract
Methods, systems, and devices are described for evolved multimedia broadcast multicast service (eMBMS) utilizing enhanced component carriers (eCCs). A wireless system may send unicast data using resources allocated for multicast transmissions (e.g., eMBMS transmissions). The presence of unicast data in a transmission time interval (TTI) scheduled for multicast transmission may be indicated by a control region within the TTI. A UE may monitor the control region to identify the presence of unicast information. A TTI scheduled for multicast transmission may also include reference signals to aid in the demodulation of multicast or unicast data. In some cases, the reference signals may be front-loaded at the beginning or embedded within the TTI. The embedded reference signals may be configured based on the type of data carried by the TTI scheduled for multicast transmission, or by length of the cyclic prefix used by the TTI scheduled for multicast transmission.
41 Citations
30 Claims
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1. A method of communication at a wireless device, comprising:
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determining that a set of resources is scheduled for an evolved multimedia broadcast multicast service (eMBMS); determining that a first symbol period of the set of resources is associated with a cell-specific reference signal (CRS) preamble and a second symbol period of the set of resources is a unicast control symbol period; and identifying a control message in the unicast control symbol period indicating a unicast data transmission utilizing the set of resources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for communication at a wireless device, comprising:
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means for determining that a set of resources is scheduled for an evolved multimedia broadcast multicast service (eMBMS); means for determining that a first symbol period of the set of resources is associated with a cell-specific reference signals (CRS) preamble and a second symbol period of the set of resources is a unicast control symbol period; and means for identifying a control message in the unicast control symbol period indicating a unicast data transmission utilizing the set of resources.
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20. An apparatus for communication at a wireless device, comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory;
wherein the instructions are executable by the processor to cause the apparatus to;determine that a set of resources is scheduled for an evolved multimedia broadcast multicast service (eMBMS); determine that a first symbol period of the set of resources is associated with a cell-specific reference signals (CRS) preamble and a second symbol period of the set of resources is a unicast control symbol period; and identify a control message in the unicast control symbol period indicating a unicast data transmission utilizing the set of resources. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A non-transitory computer-readable medium storing code for communication at a wireless device, the code comprising instructions executable to:
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determine that a set of resources is scheduled for an evolved multimedia broadcast multicast service (eMBMS); determine that a first symbol period of the set of resources is associated with a cell-specific reference signals (CRS) preamble and a second symbol period of the set of resources is a unicast control symbol period; and identify a control message in the unicast control symbol period indicating a unicast data transmission utilizing the set of resources.
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Specification