Procedures for coreset sharing

Patent metadata

Field	Value
Publication number	US-2026032654-A1
Application number	US-202519344001-A
Country	US
Kind code	A1
Filing date	Sep 29, 2025
Priority date	Aug 3, 2020
Publication date	Jan 29, 2026
Grant date	—

Abstract

A wireless communication network, has one or more first user devices, UEs, and one or more second user devices, UEs. The wireless communication network is to configure the first UE with one or more bandwidth parts, BWPs, and with a set of control resource sets, CORESETs, within the BWP in the same slot, and the wireless communication network is to configure the second UE with only a subset from the set of CORESETs.

First claim

1 . A wireless communication network, comprising:
one or more first user devices, UEs, and one or more second user devices, UEs, wherein the wireless communication network is to configure the first UE with one or more bandwidth parts, BWPs, and with a set of control resource sets, CORESETs, within the BWP in the same slot, and wherein the wireless communication network is to configure the second UE with only a subset from the set of CORESETs.

2 . The wireless communication network of claim 1 , wherein the set of CORESETs forms a combined CORESET.

3 . The wireless communication network of claim 1-2 , wherein the wireless communication network is to configure a plurality of second UEs with the same CORESET or with different CORESETs.

4 . The wireless communication network of one of claims 1 to 3 , wherein
to configure the first UE with the plurality of control resource sets, CORESETs, within the BWP in the same slot, the wireless communication network is to provide a CORSET configuration for a basic CORESET, the CORSET configuration defining a bandwidth of the basic CORESET and a parameter indicating a plurality of frequency monitoring locations, like frequency bands, e.g., sub-bands, at which the basic CORESET exists, and the second UE is capable to operate in a first frequency range or supports a first maximum bandwidth, with the first frequency range or the first maximum bandwidth being equal to or larger than the bandwidth of the basic CORESET and at most the frequency band.

5 . The wireless communication network of claim 4 , wherein the basic CORESET and a plurality of frequency locations comprise the set of CORESETs.

6 . The wireless communication network of any of claims 1-5 , wherein one or more third user devices, UEs, are capable to operate in a third frequency range or supports a third maximum bandwidth being smaller than the first frequency range or bandwidth, with the third frequency range or the third maximum bandwidth being equal to or larger than the bandwidth of the basic CORESET but not larger than the frequency band.

7 . The wireless communication network of one of claims 4 to 6 , wherein the first UE is capable to operate in a second frequency range or supports a second maximum bandwidth, the second frequency range or second maximum bandwidth being larger than the first frequency range or the first maximum bandwidth.

8 . A user device, UE, for a wireless communication network, wherein the wireless communication network provides one or more bandwidth parts, BWPs, and a plurality of control resource sets, CORESETs, within the BWP,
wherein the second UE is configured or preconfigured with only one CORESET of the plurality of CORESETs.

9 . The user device, UE, of claim 8 , wherein the UE is capable to operate in a first frequency range or supports a first maximum bandwidth, the first frequency range or first maximum bandwidth being less than a second frequency range or a second maximum bandwidth of one or more further UEs configured with the plurality of CORESETs within the BWP.

10 . A wireless communication network, comprising:
one or more first user devices, UEs, and one or more second user devices, UEs, wherein the wireless communication network is to configure the first UE in a set of time symbols with a set of frequency resources for defining a control resource set, CORESET, and wherein the wireless communication network is to configure the second UE in the set of time symbols with a subset of the frequency resources for defining a partial CORESET.

11 . The wireless communication network of claim 10 , wherein the wireless communication network is to configure a plurality of second UEs with the same subset of the frequency resources or with different subsets of the frequency resources.

12 . The wireless communication network of claim 10 or 11 , wherein, for configuring the second UE with the subset of the frequency resources, the wireless communication system is to signal to the second UE information describing the partial CORESET by
signaling all parameters of the CORSET and where the partial CORESET is located within the CORESET, e.g. by using an offset relative to a BWP of the second UE, or an offset relative to the starting point of the CORESET, or signaling only parameters of the partial CORESET and additional parameters required to derive the structure of the partial CORESET, e.g. an offset of a first Control Channel Element, CCE, of the partial CORESET, and/or a DMRS offset, and/or an offset of the first RB of the partial CORESET.

13 . The wireless communication network of any one of claims 10 to 12 , wherein, for configuring the second UE with the subset of the frequency resources, the wireless communication system is to signal to the second UE a frequency offset parameter indicating an offset of a first resource block, RB, of the partial CORESET, relative to a first RB of the CORSET, e.g. as a number of RBs or RB groups.

14 . The wireless communication network of any one of claims 10 to 12 , wherein, for configuring the second UE with the subset of the frequency resources, the wireless communication system is to signal to the second UE a Demodulation Reference Signal, DMRS, offset, the DMRS offset enabling the second UE to reconstruct the part of the DMRS which falls into the partial CORESET.

15 . The wireless communication network of claim 13 or 14 , wherein, for configuring the second UE with the subset of the frequency resources, the wireless communication system is to signal to the second UE an Information Element, IE, containing CORESET IDs and corresponding offsets, the offsets including CORESET offsets and/or DMRS offsets.

16 . The wireless communication network of any one of claims 10 to 15 , wherein, in case a physical downlink control channel, PDCCH, candidate for the second UE contains one or more Resource Element Group, REG, bundles fully or partly outside the partial CORSET, the second UE is to
drop the PDCCH candidate, or if at least a certain number of REGs is fully within the partial CORESET, try to decode without the REGs outside the partial CORESET.

17 . The wireless communication network of any one of claims 10 to 16 , wherein the wireless communication network is to map physical downlink control channel, PDCCH, candidates for the second UE by means of a hash function such that the PDCCH candidates lie within the partial CORESET, e.g., by setting a number of Control Channel Elements, CCEs, of the CORESET to the number of CCEs of the partial CORESET.

18 . The wireless communication network of claim 17 , wherein the wireless communication network is to signal a CCE offset to make sure the CCEs associated with the PDCCH candidates for the second UE lie within the partial CORESET.

19 . The wireless communication network of any one of claims 10 to 18 , wherein the wireless communication network is to
provide one or more first PDCCH candidates for the first UE, each first PDCCH candidate to be transmitted on one or more Control Channel Elements, CCEs, in the CORESET, and provide one or more second PDCCH candidates for the second UE such that, for transmitting a second PDCCH candidate in the partial CORESET, a number of CCEs associated with different first PDCCH candidates is minimized.

20 . The wireless communication network of claim 19 , wherein the wireless communication network is to provide the second PDCCH candidate such that, for transmitting the second PDCCH candidate in the partial CORESET, the CCEs for at least one of the first PDCCH

Assignees

• Fraunhofer Ges Forschung

Inventors

• Srinivasan Nithin
• Göktepe Baris
• Mcmenamy Jasmina
• Selvanesan Sarun
• Fehrenbach Thomas
• Wirth Thomas
• Schierl Thomas
• Hellge Cornelius

Classifications

• H04W72/23

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

• H04W72/0457 Primary

  Variable allocation of band or rate · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0092

  Indication of how the channel is divided · CPC title