Network node, user device and methods thereof
First Claim
1. A network node for a wireless communication system, the network node comprising:
- a transceiver configured to receive a plurality of reference signals associated with a plurality of user devices; and
a processor configured to;
group the plurality of user devices into at least one group of user devices based on the plurality of received reference signals;
assign radio resources for grant-free data transmission to the group of user devices; and
compute a receiver filter for the group of user devices based on the plurality of received reference signals and the assigned radio resources,wherein the transceiver is further configured to receive a plurality of grant-free data transmissions from user devices in the group of user devices in the assigned radio resources,wherein the processor is further configured to separate the grant-free data transmissions from the user devices in the group of user devices based on the computed receiver filter, andwherein the processor is further configured to;
estimate inter-arrival times for data packets in the plurality of received grant-free data transmissions from the user devices in the group of user devices; and
re-compute the receiver filter for the group of user devices based on the plurality of received reference signals and the estimated inter-arrival times.
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Accused Products
Abstract
The present invention relates to a network node and a user device. The network node comprises a transceiver configured to receive a plurality of reference signals associated with a plurality of user devices; a processor configured to group the plurality of user devices into at least one group of user devices based on the plurality of received reference signals, assign radio resources for grant-free data transmission to the group of user devices, compute a receiver filter for the group of user devices based on the plurality of received reference signals and the assigned radio resources; wherein the transceiver is configured to receive a plurality of grant-free data transmissions from user devices in the group of user devices in the assigned radio resources, wherein the processor is configured to separate the grant-free data transmissions from the user devices in the group of user devices based on the computed receiver filter.
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Citations
17 Claims
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1. A network node for a wireless communication system, the network node comprising:
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a transceiver configured to receive a plurality of reference signals associated with a plurality of user devices; and a processor configured to; group the plurality of user devices into at least one group of user devices based on the plurality of received reference signals; assign radio resources for grant-free data transmission to the group of user devices; and compute a receiver filter for the group of user devices based on the plurality of received reference signals and the assigned radio resources, wherein the transceiver is further configured to receive a plurality of grant-free data transmissions from user devices in the group of user devices in the assigned radio resources, wherein the processor is further configured to separate the grant-free data transmissions from the user devices in the group of user devices based on the computed receiver filter, and wherein the processor is further configured to; estimate inter-arrival times for data packets in the plurality of received grant-free data transmissions from the user devices in the group of user devices; and re-compute the receiver filter for the group of user devices based on the plurality of received reference signals and the estimated inter-arrival times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A user device for a wireless communication system, the user device comprising:
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a transceiver configured to; transmit at least one reference signal to a network node; receive a first control message from the network node, wherein the first control message indicates radio resources for grant-free data transmission; receive a second control message from the network node, wherein the second control message indicates at least one Modulation and Coding Scheme (MCS) associated with the indicated radio resources; and transmit data packets to the network node in the indicated radio resources for grant-free data transmission using the indicated MCS, wherein the second control message further indicates an MCS update instruction instructing the user device to update the MCS for the grant-free data transmission, and wherein the MCS update instruction instructing the user device to update the MCS is based on the network node computing a receiver filter based on an estimation of inter-arrival times of data packets sent to the network node. - View Dependent Claims (12, 13)
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14. A method comprising:
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receiving a plurality of reference signals associated with a plurality of user devices; grouping the plurality of user devices into at least one group of user devices based on the plurality of received reference signals; assigning radio resources for grant-free data transmission to the group of user devices; computing a receiver filter for the group of user devices based on the plurality of received reference signals and the assigned radio resources; receiving a plurality of grant-free data transmissions from user devices in the group of user devices in the assigned radio resources; separating the grant-free data transmissions from the user devices in the group of user devices based on the computed receiver filter; estimating inter-arrival times for data packets in the plurality of received grant-free data transmissions from the user devices in the group of user devices; and re-computing the receiver filter for the group of user devices based on the plurality of received reference signals and the estimated inter-arrival times.
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15. A method comprising:
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transmitting at least one reference signal to a network node; receiving a first control message from the network node, wherein the first control message indicates radio resources for grant-free data transmission; receiving a second control message from the network node, wherein the second control message indicates at least one MCS associated with the indicated radio resources; and transmitting data packets to the network node in the indicated radio resources using the indicated MCS, wherein the second control message further indicates an MCS update instruction instructing the user device to update the MCS for the grant-free data transmission, and wherein the MCS update instruction instructing the user device to update the MCS is based on the network node computing a receiver filter based on an estimation of inter-arrival times of data packets sent to the network node.
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16. A non-transitory computer readable medium with a program code for performing, when the computer program runs on a computer, a method comprising:
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receiving a plurality of reference signals associated with a plurality of user devices; grouping the plurality of user devices into at least one group of user devices based on the plurality of received reference signals; assigning radio resources for grant-free data transmission to the group of user devices; computing a receiver filter for the group of user devices based on the plurality of received reference signals and the assigned radio resources; receiving a plurality of grant-free data transmissions from user devices in the group of user devices in the assigned radio resources; separating the grant-free data transmissions from the user devices in the group of user devices based on the computed receiver filter; estimating inter-arrival times for data packets in the plurality of received grant-free data transmissions from the user devices in the group of user devices; and re-computing the receiver filter for the group of user devices based on the plurality of received reference signals and the estimated inter-arrival times.
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17. A non-transitory computer readable medium with a program code for performing, when the computer program runs on a computer, a method comprising:
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transmitting at least one reference signal to a network node; receiving a first control message from the network node, wherein the first control message indicates radio resources for grant-free data transmission; receiving a second control message from the network node, wherein the second control message indicates at least one MCS associated with the indicated radio resources; and transmitting data packets to the network node in the indicated radio resources using the indicated MCS, wherein the second control message further indicates an MCS update instruction instructing the user device to update the MCS for the grant-free data transmission, and wherein the MCS update instruction instructing the user device to update the MCS is based on the network node computing a receiver filter based on an estimation of inter-arrival times of data packets sent to the network node.
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Specification