Support of wideband physical resource group (PRG) in long term evolution (LTE)

Patent metadata

Field	Value
Publication number	US-2020145974-A1
Application number	US-201916671053-A
Country	US
Kind code	A1
Filing date	Oct 31, 2019
Priority date	Nov 2, 2018
Publication date	May 7, 2020
Grant date	—

Abstract

In an aspect, a method of wireless communication includes receiving, by a user equipment (UE), downlink control information (DCI) having a resource allocation of allocated physical resource blocks (PRBs). The method additionally includes employing at least one of a) a wideband decoder, b) a wideband channel estimator, c) a bandwidth-specific decoder, or d) a bandwidth-specific channel estimator for wireless communications based at least on a feature of the resource allocation in the DCI. In other aspects a UE transmits, to a base station, an indication of UE capabilities regarding support of wideband physical resource group (PRG) for various transmission time interval (TTI) durations.

First claim

What is claimed is:

1 . A method of wireless communication, the method comprising:
receiving, by a user equipment (UE), downlink control information (DCI) having a resource allocation of allocated physical resource blocks (PRBs); and receiving, by the UE, the allocated PRBs based on a physical resource group (PRG) size, wherein the PRG size is selected among a wideband PRG and a bandwidth-specific PRG based at least on a feature of the resource allocation in the DCI, wherein the feature comprises one of the resource allocation being contiguous or the resource allocation being non-contiguous.

2 . The method of claim 1 , wherein the receiving the allocated PRBs based on the PRG size comprises:
employing at least one of a) a wideband decoder, or b) a wideband channel estimator, when the feature of the resource allocation is contiguous, or at least one of c) a bandwidth-specific decoder, or d) a bandwidth-specific channel estimator when the feature of the resource allocation is non-contiguous.

3 . The method of claim 2 , wherein the feature comprises the resource allocation being for more than a predetermined number N of PRBs.

4 . The method of claim 2 , wherein N≥10.

5 . The method of claim 2 , wherein the predetermined number N of PRBs is based on at least one of a UE capability or a higher layer configuration by a base station.

6 . The method of claim 2 , wherein the feature comprises:
numbers of PRBs in each of two or more sets of PRBs each exceeding a predetermined number N of PRBs; and one or more numbers of PRBs between each of the two or more sets is less than a predetermined number K of PRBs.

7 . The method of claim 6 , wherein N≥10 and 1≤K≤3.

8 . The method of claim 6 , wherein at least one value of at least one of N or K is based on at least one of a UE capability or a higher layer configuration by a base station.

9 . The method of claim 1 , Wherein the feature comprises:
the resource allocation being for a set of an integer M PRBs contained within a predetermined number N of consecutive PRBs.

10 . The method of claim 9 , wherein M≥10 and N−M≤3.

11 . The method of claim 9 , wherein at least one value of at least one of N, M, or N−M is based on at least one of a UE capability or a higher layer configuration by a base station.

12 . The method of claim 2 , further comprising:
receiving a higher layer configuration indicative of use of wideband PRG, wherein the employing at least one of a) the wideband decoder, b) the wideband channel estimator, c) the bandwidth-specific decoder, or d) the bandwidth-specific channel estimator for wireless communications is further based at least on the higher layer configuration.

13 . The method of claim 12 , further comprising:
receiving multiple higher layer configurations indicative of use of wideband PRG for different TTI lengths, wherein the employing at least one of a) the wideband decoder, b) the wideband channel estimator, c) the bandwidth-specific decoder, or d) the bandwidth-specific channel estimator for wireless communications is further based at least on a TTI length associated to the DCI.

14 . A method of wireless communication, the method comprising:
transmitting, by a user equipment (UE) to a base station, an indication of UE capabilities regarding at least one of:
whether the UE can support wideband physical resource groups (PRGs) in transmission time intervals (TTIs) having durations of one millisecond (1 ms) or more;
whether the UE can support wideband PRGs in short TTIs having durations of less than 1 ms, or
whether the UE can support simultaneous wideband PRGs in TTIs having durations of 1 ms or more and wideband PRGs in short TTIs having durations of less than 1 ms; and
receiving a configuration, by the UE from the base station, to perform wireless communications in wideband mode for a given TTI.

15 . The method of claim 14 , wherein the transmitting includes transmitting an indication that the UE can support wideband PRGs in TTIs having durations of 1 ms or more and wideband PRGs in short TTIs having durations of less than 1 ms, but not both simultaneously.

16 . A method of wireless communication, the method comprising:
receiving, by a base station from a user equipment (UE), an indication of UE capabilities regarding at least one of:
whether the UE can support wideband physical resource groups (PRGs) in transmission time intervals (TTIs) having durations of one millisecond (1 ms) or more;
whether the UE can support wideband PRGs in short TTIs having durations of less than 1 ms; or
whether the UE can support simultaneous wideband PRGs in TTIs having durations of 1 ms or more and wideband PRGs in short TTIs having durations of less than 1 ms; and
configuring the UE, by the base station, to perform wireless communications in wideband mode for a given TTI based at least on the indication of UE capabilities.

17 . The method of claim 16 , wherein the receiving includes receiving an indication that the UE can support wideband PRGs in TTIs having durations of 1 ms or more and wideband PRGs in short TTIs having durations of less than 1 ms, hut not both simultaneously.

18 . An apparatus configured for wireless communication, the apparatus comprising:
at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured:
to receive, by a user equipment (UE), downlink control information (DCI) having a resource allocation of allocated physical resource blocks (PRBs); and
to receive, by the UE, the allocated PRBs based on a physical resource group (PRG) size, wherein the PRG size is selected among a wideband PRG and a bandwidth-specific PRG based at least on a feature of the resource allocation in the DCI, wherein the feature comprises one of the resource allocation being contiguous or the resource allocation being non-contiguous.

19 . The apparatus of claim 18 , wherein the configuration of the at least one processor to receive the allocated PRBs based on the PRG size comprises configuration of the at least one processor:
to employ at least one of a) a wideband decoder, or b) a wideband channel estimator, when the feature of the resource allocation is contiguous, or at least one of c) a bandwidth-specific decoder, or d) a bandwidth-specific channel estimator when the feature of the resource allocation is non-contiguous.

20 . The apparatus of claim 19 , wherein the feature comprises the resource allocation being for more than a predetermined number N of PRBs.

21 . The apparatus of claim 19 , wherein N≥10.

22 . The apparatus of claim 19 , wherein the predetermined number N of PRBs is based on at least one of a UE capability or a higher layer configuration by a base station.

23 . The apparatus of claim 19 , wherein the feature comprises:
numbers of PRBs in each of two or more sets of PRBs each exceeding a predetermined number N of PRBs; and one or more numbers of PRBs between each of the two or more sets is less than a predetermined number K of PRBs.

24 . The apparatus of claim 23 , wherein N≥10 and 1≤K≤3.

25 . The apparatus of claim 23 , wherein at least one value of at least one of N or K is based on at least one of a UE capability or a higher layer configuration by a base station.

26 . The apparatus of claim 18 , wherein the feature comprises:
the resource allocation being for a set of an integer M PRBs co

Assignees

• Qualcomm Inc

Inventors

• Rico Alvarino Alberto
• Manolakos Alexandros
• Farajidana Amir
• Bhattacharjee Supratik
• Hosseini Seyedkianoush

Classifications

• H04W72/044 Primary

  based on the type of the allocated resource · CPC title

• H04L5/0044 Primary

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

• H04L5/0091

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title

• H04L5/0042

  Intra-user or intra-terminal allocation · CPC title

• H04L5/0064

  Rate requirement of the data, e.g. scalable bandwidth, data priority · CPC title