Techniques for wireless communications using preconfigured uplink resources

Patent metadata

Field	Value
Publication number	US-2020351844-A1
Application number	US-202016865214-A
Country	US
Kind code	A1
Filing date	May 1, 2020
Priority date	May 3, 2019
Publication date	Nov 5, 2020
Grant date	—

Abstract

Methods, systems, and devices for wireless communications are described that support techniques for wireless communications using preconfigured uplink resources. Generally, the described techniques provide for enhancement of communication features including frequency hopping, an uplink control channel, coverage enhancement, timing advance, uplink power control, reconfiguration, a downlink control channel, a downlink data channel, retransmissions, or subcarrier spacing for a UE in idle mode. The UE may receive an uplink resource configuration for uplink communications in idle mode, the uplink resource configuration comprising an indicator associated with allocated resources for the uplink communications in idle mode and a set of parameters. The UE may transmit, while in idle mode, a first uplink transmission associated with a transport block on the allocated resources and according to one or more of the parameters, and monitor for a response to the first uplink transmission.

First claim

What is claimed is:

1 . A method for wireless communications at a user equipment (UE), comprising:
receiving a first downlink resource configuration for downlink communications in a connected mode; receiving a second downlink resource configuration for downlink communications in an idle mode, the second downlink resource configuration comprising a set of parameters comprising one or more of a frequency hopping indicator or a coverage enhancement (CE) mode indicator for the downlink communications in the idle mode; entering the idle mode; and receiving, while in the idle mode, one or more downlink transmissions according to the first downlink resource configuration or the second downlink resource configuration.

2 . The method of claim 1 , wherein the first downlink resource configuration comprises a downlink control channel frequency hopping indicator, and wherein the receiving the one or more downlink transmissions is performed according to the downlink control channel frequency hopping indicator.

3 . The method of claim 1 , further comprising:
storing a state of a downlink control channel frequency hopping indicator of the first downlink resource configuration when the second downlink resource configuration was received, wherein the receiving the one or more downlink transmissions is performed according to the stored state of the downlink control channel frequency hopping indicator.

4 . The method of claim 1 , wherein receiving the one or more downlink transmissions comprises:
receiving a downlink control channel message comprising a grant for a downlink shared channel transmission, wherein the downlink control channel message comprises a second frequency hopping indicator; and receiving the downlink shared channel transmission based at least in part on the second frequency hopping indicator.

5 . The method of claim 1 , further comprising:
receiving a first set of frequency hopping parameters associated with a first CE mode and a second set of frequency hopping parameters associated with a second CE mode.

6 . The method of claim 5 , wherein receiving the one or more downlink transmissions comprises:
receiving the one or more downlink transmissions according to the first set of frequency hopping parameters based at least in part on the CE mode indicator.

7 . The method of claim 5 , wherein the first set of frequency hopping parameters comprise a first number of repetitions for the one or more downlink transmissions and the second set of frequency hopping parameters comprise a second number of repetitions for the one or more downlink transmissions, and wherein the receiving comprises:
receiving the one or more downlink transmissions according to the first number of repetitions or the second number of repetitions based at least in part on the CE mode indicator.

8 . The method of claim 5 , wherein receiving the one or more downlink transmissions comprises:
receiving the one or more downlink transmissions according to the second set of frequency hopping parameters based at least in part on a number of repetitions of the one or more downlink transmissions satisfying a threshold number of repetitions.

9 . The method of claim 5 , wherein receiving the one or more downlink transmissions comprises:
receiving the one or more downlink transmissions according to the first set of frequency hopping parameters based at least in part on determining that the UE was configured for the first CE mode at a time that the UE received the second downlink resource configuration.

10 . The method of claim 1 , wherein the frequency hopping indicator comprises a first frequency hopping indicator associated with a physical downlink control channel and a second frequency hopping indicator associated with a physical downlink shared channel.

11 . The method of claim 1 , wherein receiving the one or more downlink transmissions comprises:
receiving a downlink control channel message comprising a grant for a downlink shared channel transmission, wherein the downlink control channel message comprises a repetition indicator associated with the downlink shared channel transmission, and wherein the second downlink resource configuration comprises an indicator of a correspondence between a value for the repetition indicator and a number of repetitions indicated by the repetition indicator.

12 . The method of claim 11 , wherein the indicator of the correspondence between the value for the repetition indicator and the number of repetitions indicated by the repetition indicator comprises a maximum a number of repetitions for the downlink shared channel transmission.

13 . A method for wireless communications at a base station, comprising:
transmitting, to a user equipment (UE), a first downlink resource configuration for downlink communications to the UE in a connected mode; transmitting, to the UE, a second downlink resource configuration for downlink communications to the UE an idle mode, the second downlink resource configuration comprising a set of parameters comprising one or more of a frequency hopping indicator or a coverage enhancement (CE) mode indicator for the downlink communications in the idle mode; and transmitting, subsequent to the UE transitioning from the connected mode to the idle mode, one or more downlink transmissions according to the first downlink resource configuration or the second downlink resource configuration.

14 . The method of claim 13 , wherein the first downlink resource configuration comprises a downlink control channel frequency hopping indicator, and wherein the transmitting the one or more downlink transmissions is performed according to the downlink control channel frequency hopping indicator.

15 . The method of claim 13 , further comprising:
storing a state of a downlink control channel frequency hopping indicator of the first downlink resource configuration when the second downlink resource configuration was transmitted to the UE, wherein the transmitting the one or more downlink transmissions is performed according to the stored state of the downlink control channel frequency hopping indicator.

16 . The method of claim 13 , wherein transmitting the one or more downlink transmissions comprises:
transmitting a downlink control channel message comprising a grant for a downlink shared channel transmission, wherein the downlink control channel message comprises a second frequency hopping indicator; and transmitting the downlink shared channel transmission based at least in part on the second frequency hopping indicator.

17 . The method of claim 13 , further comprising:
transmitting a first set of frequency hopping parameters associated with a first CE mode and a second set of frequency hopping parameters associated with a second CE mode.

18 . The method of claim 17 , wherein transmitting the one or more downlink transmissions comprises:
transmitting the one or more downlink transmissions according to the first set of frequency hopping parameters based at least in part on the CE mode indicator.

19 . The method of claim 17 , wherein the first set of frequency hopping parameters comprise a first number of repetitions for the one or more downlink transmissions and the second set of frequency hopping parameters comprise a second number of repetitions for the one or more downlink transmissions, and wherein the transmitting comprises:
transmitting the one or more downlink transmissions according to the first number of repetitions or the second number of repetitions based at least in par

Assignees

• Qualcomm Inc

Inventors

• Rico Alvarino Alberto
• Sengupta Ayan
• Liu Le
• Phuyal Umesh

Classifications

• H04W72/23 Primary

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

• H04L1/08 Primary

  by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/1273

  of downlink data flows · CPC title

• H04W76/27

  Transitions between radio resource control [RRC] states · CPC title