Resource configuration and selection for device-to-device links

Patent metadata

Field	Value
Publication number	US-2022015070-A1
Application number	US-202117403467-A
Country	US
Kind code	A1
Filing date	Aug 16, 2021
Priority date	Feb 15, 2019
Publication date	Jan 13, 2022
Grant date	—

Abstract

Methods, systems, and devices for resource configuration and selection for device-to-device links in mobile communication technology are described. An exemplary method for wireless communication includes receiving, by a wireless device from a network node, a configuration for multiple resource pools that are associated with a carrier set, selecting, based on the configuration, a resource from the multiple resource pools, and performing, using the resource, a device-to-device link communication. Another exemplary method for wireless communication includes receiving, by a wireless device from a network node, a configuration for multiple resource pools that are associated with a carrier set, receiving, from the network node, a dedicated resource, and performing, using the dedicated resource, a device-to-device link communication.

First claim

What is claimed is:

1 . A method for wireless communication, comprising:
receiving, by a wireless device from a network node, a configuration for multiple resource pools that are associated with a carrier set; selecting, based on the configuration, a resource from the multiple resource pools; and performing, using the resource, a device-to-device link communication.

2 . A method for wireless communication, comprising:
receiving, by a wireless device from a network node, a configuration for multiple resource pools that are associated with a carrier set; receiving, from the network node, a dedicated resource; and performing, using the dedicated resource, a device-to-device link communication.

3 . A method of claim 1 or 2 , comprising:
transmitting, by the wireless device to the network node, a resource configuration request that is associated with the wireless device itself.

4 . The method of claim 3 , wherein the configuration comprises at least one of a UE ID, a quality-of-service (QoS) list of ongoing services, an interested frequency list for reception, an interested frequency list for transmission, a UE type, a Radio Access Technology (RAT) type that the wireless device is enabled to use for transmission, a resource type, an indication of whether traffic is periodic, a traffic periodicity, a logical channel identity for UL transmission or a traffic pattern.

5 . The method of claim 1 or 2 , wherein the configuration comprises at least one of a set of allowed carriers used for device-to-device link communication for NR RAT, a set of allowed carriers used for device-to-device link communication for LTE RAT, a transmission parameter associated with a different packet priority, a synchronization resource type for each carrier, a resource pool configuration, a mapping between a logical channel group and a QoS index, a mapping between data rates and different numbers of sub-channels, a packet duplication threshold associated with a packet error rate, a mapping between a scheduling mode and a QoS index, an SL-CS-RNTI associated with a configured grant type 1, an SL-CS-RNTI associated with a configured grant type 2, or a mapping between VQI and a corresponding PDCP, RLC or MAC parameter.

6 . The method of claim 5 , wherein the corresponding PDCP parameter includes at least one of discard Timer, statusReportRequired, PDCP-SN-Size, DataSplitThreshold, statusPDB-Periodicity, t-Reordering, rn-IntegrityProtection, DataSplitDRB, DataSplitThreshold, outofOrderDelivery or pdcp-DuplicationSRB.

7 . The method of claim 5 , wherein the corresponding RLC parameter includes at least one of t-PollRetransmit, pollPDU, pollByte, maxRetxThreshold, t-Reordering, t-StatusProhibit, am-WithShortSN, um-WithShortSN or um-WithLongSN.

8 . The method of claim 5 , wherein the corresponding MAC parameter includes at least one of LCP-Restriction, recommendedBitRate, logicalChannelSR-DelayTimer, multipleSR-Configurations or multipleConfiguredGrants.

9 . The method of claim 5 , wherein the transmission parameter associated with the different packet priority comprises at least one of a range of applicable modulation and coding schemes (MCS), a range of applicable number of sub-channels, a number of re-transmissions, or an allowed maximum transmission power.

10 . The method of claim 5 , wherein the resource pool configuration comprises at least one of a resource type, a resource periodicity, a resource timing offset, a time-domain resource location, a frequency-domain resource location, an antenna port configuration of the resource, or an indication of whether a current resource pool is allowed for sensing.

11 . The method of claim 4 or 10 , wherein the resource type comprises at least one of an NR configured grant type 1, an NR configured grant type 2, a mode 1 resource, a mode 2 resource, a dynamic resource, or an SPS resource.

12 . The method of claim 1 or 2 , wherein selecting the resource from the multiple resource pools is further based on an amount of buffered data for at least one carrier in the carrier set.

13 . The method of claim 5 , wherein selecting the resource with a certain number of sub-channel is based on the configured mapping between the data rate to the number of sub-channels.

14 . The method of claim 1 , wherein the communication is enabled to support a specific casting type.

15 . The method of claim 14 , wherein the specific casting type is groupcast, wherein the wireless device is a header user equipment (UE) for a plurality of UEs.

16 . The method of claim 15 , further comprising:
receiving, from the network node, a configuration for a resource configuration from the multiple resource pools; and transmitting the resource configuration to the plurality of UEs.

17 . The method of claim 15 , further comprising:
reporting, to the network node, an assistance information for a resource request that is used for device-to-device communication between itself and the plurality of UEs.

18 . The method of claim 16 , the assistance information comprises at least one of a CBR measurement on each selected carrier, a QoS requirement of the groupcast service, a band combination capability of the wireless device and the plurality of UEs, or a number of UEs within this group.

19 . The method of claim 14 , further comprising:
determining a plurality of locations for each of the plurality of UEs; and selecting, based on the plurality of locations and a plurality of signal strengths, a set of beam directions that are used for the transmitting the configuration and data traffic, wherein each of the plurality of signal strengths is associated with a specific beam direction.

20 . The method of claim 15 or 16 , wherein the configuration comprises at least one of an identification of the header user equipment that is enabled to provide the multiple resource pools, a time-domain indication of a location of the resource, a frequency-domain indication of a location of the resource, transmission parameters.

21 . The method of claim 20 , wherein the transmission parameters includes at least one of a range of applicable MCS, a range of applicable number of sub-channels, a number of re-transmissions, or an allowed maximum transmission power.

22 . The method of claim 3 or 15 , wherein the reported information comprises the resource configuration, and wherein the header UE is enabled to transmit the reported information to the plurality of UEs.

23 . The method of claim 14 , further comprising:
selecting a mode 2 resource from the multiple resource pools; and transmitting a configuration for the mode 2 resource to the plurality of UEs.

24 . The method of claim 16 or 23 , wherein the configuration is transmitted over a PC5 Radio Resource Control (RRC) connection.

25 . The method of claim 2 , wherein the resource pool is a mode 1 resource pool, and wherein selecting the resource is further based on an indication from the network node.

26 . The method of claim 1 , wherein the resource pool is a mode 2 resource pool, and wherein selecting the resource is performed autonomously by the wireless device.

27 . The method of claim 1 or 2 , wherein a configuration for the multiple resource pools comprises at least one of a resource periodicity, a resource timing offset, a resource location in a time-domain, a resource location in a frequency-domain, an antenn

Assignees

• Zte Corp

Inventors

• Chen Lin
• Luo Wei
• Wang Mengzhen
• Zhang Boyuan

Classifications

• H04W72/543

  based on requested quality, e.g. QoS · CPC title

• H04W72/23

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

• H04W76/14

  Direct-mode setup · CPC title

• H04W72/02 Primary

  Selection of wireless resources by user or terminal · CPC title

• H04W92/18

  between terminal devices · CPC title