Preconfigured grants with a distribution pattern

Patent metadata

Field	Value
Publication number	US-2019069319-A1
Application number	US-201815769218-A
Country	US
Kind code	A1
Filing date	Jan 4, 2018
Priority date	Jan 6, 2017
Publication date	Feb 28, 2019
Grant date	—

Abstract

Methods, a network node and a wireless device for implementing pre-configured grants with a hopping pattern in a wireless communication system are disclosed. According to one aspect, a method in a network node for scheduling uplink transmissions for at least one wireless device is provided. The method includes defining a set of time-frequency uplink distribution patterns utilizing preconfigured grants of time-frequency resources for the at least one wireless device. The method also includes assigning to a first wireless device of the at least one wireless device a first time-frequency uplink distribution pattern from the set.

First claim

1 . A method in a network node for scheduling uplink transmissions for at least one wireless device, the method comprising:
defining a set of time-frequency uplink distribution patterns utilizing preconfigured grants of time-frequency resources of a time-frequency resource pool for the at least one wireless device; and assigning to a first wireless device of the least one wireless device a first time-frequency uplink distribution pattern from the set.

2 . The method of claim 1 , wherein each of a plurality of wireless devices are assigned preconfigured grants of different sizes.

3 . The method of claim 1 , wherein the first wireless device is assigned time-frequency resources on different carriers.

4 . The method of claim 1 , wherein each of the preconfigured grants is utilized in a different shared resource pool in a cyclic manner.

5 . The method of claim 1 , wherein a distribution pattern and size of a resource pool are dynamically reconfigured by a network scheduler of the network node to reduce at least one of frequency selective fading and collisions.

6 . The method of claim 1 , wherein, in case of high collisions for Ultra-Reliable Low-Latency Communications, URLLC, traffic, a network scheduler of the network node reverts to dynamic grants of time-frequency resources.

7 . A network node for scheduling uplink transmissions for at least one wireless device, the network node comprising:
processing circuitry including a memory and a processor, the memory in communication with the processor, the memory having instructions that, when executed by the processor, configure the processor to:
define a set of time-frequency uplink distribution patterns utilizing preconfigured grants of time-frequency resources of a time-frequency resource pool for the at least one wireless device; and
assign to a first wireless device of the at least one wireless device a first time-frequency uplink distribution pattern from the set.

8 . The network node of claim 7 , wherein each of a plurality of wireless devices are assigned preconfigured grants of different sizes.

9 . The network node of claim 7 , wherein the first wireless device is assigned time-frequency resources on different carriers.

10 . The network node of claim 7 , wherein each preconfigured grant is utilized in a different shared resource pool in a cyclic manner.

11 . The network node of claim 7 , wherein a distribution pattern and size of a resource pool are dynamically reconfigured by the processor to reduce at least one of frequency selective fading and collisions.

12 . The network node of claim 7 , wherein, in case of high collisions for Ultra-Reliable Low-Latency Communications, URLLC, traffic, the processor reverts to dynamic grants of time-frequency resources.

13 . A network node for scheduling uplink transmissions for at least one wireless device, the network node comprising:
a distribution pattern definition module configured to define a set of time-frequency uplink distribution patterns utilizing preconfigured grants of time-frequency resources of a time frequency resource pool for the at least one wireless device; and an assigning module configured to assign to a first wireless device of the at least one wireless device a first time-frequency uplink distribution pattern from the set.

14 . A method in a wireless device for transmitting data packets in an uplink transmission to a network node, the method comprising:
determining a set of time-frequency uplink distribution patterns utilizing preconfigured grants of time-frequency resources of a time-frequency resource pool for the wireless device; and transmitting, to the network node, an uplink transmission of the data packets, the uplink transmission based on a determined time-frequency uplink distribution pattern.

15 . The method of claim 14 , wherein the determining includes receiving the set of time-frequency uplink distribution patterns from the network node.

16 . The method of claim 14 , wherein each of the preconfigured grants is utilized in a different shared resource pool in a cyclic manner.

17 . The method of claim 14 , wherein a distribution pattern and size of a resource pool are dynamically reconfigured to reduce at least one of frequency selective fading and collisions.

18 . A wireless device for transmitting data packets in an uplink transmission to a network node, the wireless device comprising:
processing circuitry including a memory and a processor, the memory in communication with the processor, the memory having instructions that, when executed by the processor, configure the processor to determine a set of time-frequency uplink distribution patterns utilizing preconfigured grants of time-frequency resources of a time frequency resource pool for the wireless device; and a transmitter configured to transmit, to the network node, an uplink transmission of the data packets, the uplink transmission based on a determined time-frequency uplink distribution pattern.

19 . The wireless device of claim 18 , wherein the determining includes receiving the set of time-frequency uplink distribution patterns from the network node.

20 . The wireless device of claim 18 , wherein each of preconfigured successive grants is utilized in a different shared resource pool in a cyclic manner.

21 . The wireless device of claim 18 , wherein a distribution pattern and size of a resource pool are dynamically reconfigured to reduce at least one of frequency selective fading and collisions.

22 . A wireless device for transmitting data packets in an uplink transmission to a network node, the wireless device comprising:
a distribution pattern determination module configured to determine a set of time-frequency uplink distribution patterns utilizing preconfigured grants of time-frequency resources for the wireless device; and a transmitter module configured to transmit, to the network node, an uplink transmission of the data packets, the uplink transmission based on a determined time-frequency uplink distribution pattern.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Arshad Malik Wahaj
• Lu Qianxi
• Zou Zhenhua

Classifications

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L5/0037 Primary

  Inter-user or inter-terminal allocation · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/54

  based on quality criteria · CPC title