System and method for resource allocation for sparse code multiple access transmissions
First Claim
Patent Images
1. A method of resource allocation for non-orthogonal multiple access signals, comprising:
- signaling resource region assignments to devices of respective device groups in a plurality of device groups, the resource region assignments assigning a plurality of resource regions of a resource block to the respective device groups, the plurality of device groups comprising a first device group and a second device group; and
receiving the non-orthogonal multiple access signals from the devices of the respective device groups, wherein non-orthogonal multiple access signals from devices in the first device group are received synchronously with non-orthogonal multiple access signals from other devices in the first device group, the non-orthogonal multiple access signals from devices in the first device group are received asynchronously with non-orthogonal multiple access signals from devices in the second device group, and the non-orthogonal multiple access signals from devices in the second device group are received synchronously with non-orthogonal multiple access signals from other devices in the second device group.
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Abstract
An embodiment method of resource allocation for sparse code multiple access (SCMA) transmissions includes partitioning a resource block into a plurality of resource regions. The method also includes assigning the plurality of resource regions to respective device groups. The resource region assignments are then signaled to devices of the respective device groups. The method also includes receiving SCMA signals from the devices of the respective device groups. The SCMA signals from one group of the respective device groups are asynchronous with respect to the SCMA signals from another group of the respective device groups.
76 Citations
29 Claims
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1. A method of resource allocation for non-orthogonal multiple access signals, comprising:
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signaling resource region assignments to devices of respective device groups in a plurality of device groups, the resource region assignments assigning a plurality of resource regions of a resource block to the respective device groups, the plurality of device groups comprising a first device group and a second device group; and receiving the non-orthogonal multiple access signals from the devices of the respective device groups, wherein non-orthogonal multiple access signals from devices in the first device group are received synchronously with non-orthogonal multiple access signals from other devices in the first device group, the non-orthogonal multiple access signals from devices in the first device group are received asynchronously with non-orthogonal multiple access signals from devices in the second device group, and the non-orthogonal multiple access signals from devices in the second device group are received synchronously with non-orthogonal multiple access signals from other devices in the second device group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of receiving non-orthogonal multiple access signals, comprising:
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receiving a first non-orthogonal multiple access signal from a first device, wherein the first non-orthogonal multiple access signal uses a first resource region of a plurality of resource regions of a partitioned resource block; receiving a second non-orthogonal multiple access signal from a second device, wherein the second non-orthogonal multiple access signal uses a second resource region of the plurality of resource regions, wherein the second non-orthogonal multiple access signal is received asynchronously with the first non-orthogonal multiple access signal; and receiving a third non-orthogonal multiple access signal from a third device, wherein the third non-orthogonal multiple access signal uses the second resource region of the plurality of resource regions, wherein the third non-orthogonal multiple access signal is received synchronously with respect to the second non-orthogonal multiple access signal, and wherein the third non-orthogonal multiple access signal is received asynchronously with respect to the first non-orthogonal multiple access signal. - View Dependent Claims (12, 13, 14)
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15. A method of transmitting a non-orthogonal multiple access signal, comprising:
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receiving, at a device, a resource region assignment indicating a first resource region of a resource block assigned to a first device group of which the device is a member; and transmitting the non-orthogonal multiple access signal to a base station using time and frequency resources of the first resource region assigned according to the resource region assignment, wherein the transmitting to the base station is carried out synchronously with a local timing reference for devices in the first device group, the transmitting is carried out asynchronously with respect to non-orthogonal multiple access signals transmitted to the base station by devices in a second device group having a different resource region assignment indicating a second resource region of the resource block, and the non-orthogonal multiple access signals transmitted by the devices in the second device group are transmitted synchronously with respect to one another using time and frequency resources of the second resource region. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A base station comprising:
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a transmitter configured to signal resource region assignments to devices of respective device groups in a plurality of device groups, the resource region assignments assigning a plurality of resource regions of a resource block to the respective device groups, the plurality of device groups comprising a first device group and a second device group; and a receiver configured to receive non-orthogonal multiple access signals from the devices of the respective device groups, wherein the non-orthogonal multiple access signals from devices in the first device group are received synchronously with non-orthogonal multiple access signals from other devices in the first device group, the non-orthogonal multiple access signals from devices in the first device group are received asynchronously with non-orthogonal multiple access signals from devices in the second device group, and the non-orthogonal multiple access signals from devices in the second device group are received synchronously with non-orthogonal multiple access signals from other devices in the second device group. - View Dependent Claims (22, 23, 24, 25)
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26. A device comprising:
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a receiver configured to receive a resource region assignment indicating a first resource region of a resource block assigned to a first device group of which the device is a member; and a transmitter configured to transmit a non-orthogonal multiple access signal to a base station using time and frequency resources of the first resource region assigned according to the resource region assignment, wherein the transmitting to the base station is carried out synchronously with a local timing reference for devices in the first device group, the transmitting is carried out asynchronously with respect to non-orthogonal multiple access signals transmitted to the base station by devices in a second device group having a different resource region assignment indicating a second resource region of the resource block, and the non-orthogonal multiple access signals transmitted by the devices in the second device group are transmitted synchronously with respect to one another using time and frequency resources of the second resource region. - View Dependent Claims (27, 28, 29)
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Specification