US-12621816-B2 - Common frequency resources for multicast and broadcast services

US12621816B2US 12621816 B2US12621816 B2US 12621816B2US-12621816-B2

Abstract

A wireless device receives a radio network temporary identifier (RNTI) for multicast and broadcast services (MBS) of a cell, a first parameter indicating a first location of first common frequency resources (CFR) for the MBS within a first BWP and a second parameter indicating a second location of second CFR for the MBS within a second BWP. The wireless device receives, based on the RNTI, via an active BWP of the cell a group common downlink control information (DCI) scheduling a transport block of the MBS, wherein: the group common DCI is received via the first CFR for the MBS based on the first BWP being the active BWP or the group common DCI is received via the second CFR for the MBS based on the second BWP being the active BWP; and the transport block of the MBS.

Inventors

Hua Zhou
Esmael Hejazi Dinan
Yunjung Yi
Ali Cagatay Cirik
Hyoungsuk Jeon
Hyukjin Chae
Jonghyun Park
Kai Xu

Assignees

OFINNO, LLC

Dates

Publication Date: 20260505
Application Date: 20230911

Claims (20)

1 . A method comprising: receiving, by a wireless device, one or more radio resource control (RRC) messages comprising: a radio network temporary identifier (RNTI) for multicast and broadcast services (MBS) of a cell; and configuration parameters of a first bandwidth part (BWP) and a second BWP of the cell, the configuration parameters comprising: a first parameter indicating a first location of first common frequency resources (CFR) for the MBS within the first BWP; and a second parameter indicating a second location of second CFR for the MBS within the second BWP; and receiving, based on the RNTI, via an active BWP of the cell: a group common downlink control information (DCI) scheduling a transport block of the MBS, wherein: the group common DCI is received via the first CFR for the MBS based on the first BWP being the active BWP; or the group common DCI is received via the second CFR for the MBS based on the second BWP being the active BWP; and the transport block of the MBS.
2 . The method of claim 1 , wherein the configuration parameters indicate a first starting resource block (RB) of first RBs of the first CFR and a number of the first RBs.
3 . The method of claim 1 , wherein the configuration parameters indicate a second starting resource block (RB) of second RBs of the second CFR and a number of the second RBs.
4 . The method of claim 1 , further comprising receiving a second DCI in the active BWP, wherein: the second DCI is a wireless device specific DCI addressed to a cell-RNTI (C-RNTI) that dedicatedly identifies the wireless device; the second DCI indicates a unicast transmission of a second transport block; and the second CFR is within the active BWP and outside of the first CFR for the MBS.
5 . The method of claim 1 , wherein the receiving the group common DCI is based on monitoring a downlink control channel for the group common DCI with cyclic redundancy check (CRC) bits, of the group common DCI, being scrambled by the RNTI for the MBS.
6 . The method of claim 1 , wherein the RNTI is a G-RNTI.
7 . The method of claim 1 , further comprising transmitting, by the wireless device, a first message indicating MBS.
8 . A method comprising: transmitting, by a base station, one or more radio resource control (RRC) messages comprising: a radio network temporary identifier (RNTI) for multicast and broadcast services (MBS) of a cell; and configuration parameters of a first bandwidth part (BWP) and a second BWP of the cell, the configuration parameters comprising: a first parameter indicating a first location of first common frequency resources (CFR) for the MBS within the first BWP; and a second parameter indicating a second location of second CFR for the MBS within the second BWP; and transmitting, based on the RNTI, via an active BWP of the cell: a group common downlink control information (DCI) scheduling a transport block of the MBS, wherein: the group common DCI is transmitted via the first CFR for the MBS based on the first BWP being the active BWP; or the group common DCI is transmitted via the second CFR for the MBS based on the second BWP being the active BWP; and the transport block of the MBS.
9 . The method of claim 8 , wherein the configuration parameters indicate a first starting resource block (RB) of first RBs of the first CFR and a number of the first RBs.
10 . The method of claim 8 , wherein the configuration parameters indicate a second starting resource block (RB) of second RBs of the second CFR and a number of the second RBs.
11 . The method of claim 8 , further comprising transmitting a second DCI in the active BWP, wherein: the second DCI is a wireless device specific DCI addressed to a cell-RNTI (C-RNTI) that dedicatedly identifies the wireless device; the second DCI indicates a unicast transmission of a second transport block; and the second CFR is within the active BWP and outside of the first CFR for the MBS.
12 . The method of claim 8 , wherein; the transmitting the group common DCI is via a downlink control channel for the group common DCI; and cyclic redundancy check (CRC) bits, of the group common DCI, are scrambled by the RNTI for the MBS.
13 . The method of claim 8 , wherein the RNTI is a G-RNTI.
14 . The method of claim 8 , further comprising receiving, by the base station, a first message indicating MBS.
15 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a base station, cause the base station to: transmit one or more radio resource control (RRC) messages comprising: a radio network temporary identifier (RNTI) for multicast and broadcast services (MBS) of a cell; and configuration parameters of a first bandwidth part (BWP) and a second BWP of the cell, the configuration parameters comprising: a first parameter indicating a first location of first common frequency resources (CFR) for the MBS within the first BWP; and a second parameter indicating a second location of second CFR for the MBS within the second BWP; and transmit, based on the RNTI, via an active BWP of the cell: a group common downlink control information (DCI) scheduling a transport block of the MBS, wherein: the group common DCI is transmitted via the first CFR for the MBS based on the first BWP being the active BWP; or the group common DCI is transmitted via the second CFR for the MBS based on the second BWP being the active BWP; and the transport block of the MBS.
16 . The non-transitory computer-readable medium of claim 15 , wherein the configuration parameters indicate a first starting resource block (RB) of first RBs of the first CFR and a number of the first RBs.
17 . The non-transitory computer-readable medium of claim 15 , wherein the configuration parameters indicate a second starting resource block (RB) of second RBs of the second CFR and a number of the second RBs.
18 . The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the base station to: transmit a second DCI in the active BWP, wherein: the second DCI is a wireless device specific DCI addressed to a cell-RNTI (C-RNTI) that dedicatedly identifies the wireless device; the second DCI indicates a unicast transmission of a second transport block; and the second CFR is within the active BWP and outside of the first CFR for the MBS.
19 . The non-transitory computer-readable medium of claim 15 , wherein; transmitting the group common DCI is via a downlink control channel for the group common DCI; and cyclic redundancy check (CRC) bits, of the group common DCI, are scrambled by the RNTI for the MBS.
20 . The non-transitory computer-readable medium of claim 15 , wherein the RNTI is a G-RNTI.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. patent application Ser. No. 18/110,167, filed Feb. 15, 2023, which is a continuation of International Application No. PCT/US2021/055215, filed Oct. 15, 2021, which claims the benefit of U.S. Provisional Application No. 63/092,137, filed Oct. 15, 2020, all of which are hereby incorporated by reference in their entireties. BRIEF DESCRIPTION OF THE DRAWINGS Examples of several of the various embodiments of the present disclosure are described herein with reference to the drawings. FIG. 1A and FIG. 1B illustrate example mobile communication networks in which embodiments of the present disclosure may be implemented. FIG. 2A and FIG. 2B respectively illustrate a New Radio (NR) user plane and control plane protocol stack. FIG. 3 illustrates an example of services provided between protocol layers of the NR user plane protocol stack of FIG. 2A. FIG. 4A illustrates an example downlink data flow through the NR user plane protocol stack of FIG. 2A. FIG. 4B illustrates an example format of a MAC subheader in a MAC PDU. FIG. 5A and FIG. 5B respectively illustrate a mapping between logical channels, transport channels, and physical channels for the downlink and uplink. FIG. 6 is an example diagram showing RRC state transitions of a UE. FIG. 7 illustrates an example configuration of an NR frame into which OFDM symbols are grouped. FIG. 8 illustrates an example configuration of a slot in the time and frequency domain for an NR carrier. FIG. 9 illustrates an example of bandwidth adaptation using three configured BWPs for an NR carrier. FIG. 10A illustrates three carrier aggregation configurations with two component carriers. FIG. 10B illustrates an example of how aggregated cells may be configured into one or more PUCCH groups. FIG. 11A illustrates an example of an SS/PBCH block structure and location. FIG. 11B illustrates an example of CSI-RS s that are mapped in the time and frequency domains. FIG. 12A and FIG. 12B respectively illustrate examples of three downlink and uplink beam management procedures. FIG. 13A, FIG. 13B, and FIG. 13C respectively illustrate a four-step contention-based random access procedure, a two-step contention-free random access procedure, and another two-step random access procedure. FIG. 14A illustrates an example of CORESET configurations for a bandwidth part. FIG. 14B illustrates an example of a CCE-to-REG mapping for DCI transmission on a CORESET and PDCCH processing. FIG. 15 illustrates an example of a wireless device in communication with a base station. FIG. 16A, FIG. 16B, FIG. 16C, and FIG. 16D illustrate example structures for uplink and downlink transmission. FIG. 17A, FIG. 17B and FIG. 17C illustrate examples of MAC subheaders, according to some embodiments. FIG. 18A illustrates an example of a DL MAC PDU, according to some embodiments. FIG. 18B illustrates an example of an UL MAC PDU, according to some embodiments. FIG. 19 illustrates a table showing example LCIDs for downlink, according to some embodiments. FIG. 20 illustrates a table showing example LCIDs for uplink, according to some embodiments. FIG. 21A and FIG. 21B illustrate examples of SCell activation/deactivation MAC CE formats, according to some embodiments. FIG. 22 illustrates an example of BWP activation/deactivation on a SCell, according to some embodiments. FIG. 23A, FIG. 23B and FIG. 23C illustrate examples of configuration parameters of a MIB, according to some embodiments. FIG. 24 illustrates an example of RRC configuration of a SIB1 message, according to some embodiments. FIG. 25 illustrates an example of RRC configuration of a downlink BWP, according to some embodiments. FIG. 26 illustrates an example of RRC configuration of a search space, according to some embodiments. FIG. 27A and FIG. 27B illustrate example diagrams showing unicast, multicast, and broadcast transmission, according to some embodiments. FIG. 28A and FIG. 28B illustrate examples of MBS resource allocation modes, according to some embodiments. FIG. 29 illustrates an example of MBS radio resource configurations, according to some embodiments. FIG. 30 illustrates an example of MBS reception, according to some embodiments. FIG. 31 illustrates an example flowchart for determination of MBS resource allocation modes, according to some embodiments. FIG. 32A and FIG. 32B illustrate examples of MBS resource allocation on BWPs, according to some embodiments. FIG. 33A illustrates an example of MBS resource allocation on multiple BWPs, according to some embodiments. FIG. 33B illustrates an example of multiple MB Ss configured in a BWP, according to some embodiments. DETAILED DESCRIPTION In the present disclosure, various embodiments are presented as examples of how the disclosed techniques may be implemented and/or how the disclosed techniques may be practiced in environments and scenarios. It will be apparent to persons skilled in the relevant art that various changes in form and