# US 2022/0046591 A1 · Mbs service multiplexing and resource configuration

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- Number: US 2022/0046591 A1
- Document ID: US20220046591A1
- Status: Published application
- Kind: A1
- Application number: 17/508,163
- Filed: 2021-10-22
- Published: 2022-02-10
- Earliest claimed: 2020-10-22
- Assignees: Intel Corporation
- Inventors: Honglei Miao
- Web page: https://patentgrep.com/patent/US20220046591A1

## CPC

- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 72/30: Resource management for broadcast services
- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04L 1/189: {Transmission or retransmission of more than one copy of a message}
- H04L 1/1893: {Physical mapping arrangements (physical resource mapping in general H04L5/00)}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/1273: of downlink data flows
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 2001/0093: {Point-to-multipoint}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

An apparatus and system to provide MBS transmissions are described. MBS-specific common resource pools are provided for simultaneously reception of multiple MBS transmissions. The pools have non/partial/fully-overlapped frequency resources in a UE-specific downlink BWP. A control resource set is associated with the pool to allocate the MBS downlink grant as well as the MBS data resource can within the pool. A slot contains multiple mini-slots that contain an MBS transmission, a unicast PDSCH transmission, and a second unicast PDSCH transmission for a different UE or to retransmit the MBS transmission. Control channel search spaces allocate different DCI formats in the slot.

## Claims

### Claim 1

An apparatus for a user equipment (UE), the apparatus comprising:
processing circuitry configured to:
decode, from a 5th generation NodeB (gNB), a configuration for each of a plurality of multicast-broadcast service (MBS)-specific common resource pools disposed in a slot, a first MBS-specific common resource pool of the plurality of MBS-specific common resource pools allocated for a first MBS transmission, a second MBS-specific common resource pool of the plurality of MBS-specific common resource pools allocated for a second MBS transmission;
decode, from the gNB, the first MBS transmission in the first MBS-specific common resource pool; and
decode, from the gNB, the second MBS transmission in the second MBS-specific common resource pool; and
a memory configured to store the configuration.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the first and second MBS-specific common resource pools do not overlap in frequency.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the first and second MBS-specific common resource pools at least partially overlap in frequency.

### Claim 4 (depends on 3)

The apparatus of claim 3, wherein the first and second MBS-specific common resource pools fully overlap in frequency.

### Claim 5 (depends on 3)

The apparatus of claim 3, wherein the processing circuitry is further configured to decode, from the gNB, scheduling of the first and second MBS transmissions for reception in different mini-slots within the slot.

### Claim 6 (depends on 3)

The apparatus of claim 3, wherein:
the first and second MBS transmissions are periodic MBS transmissions, and
the processing circuitry is further configured to decode, from the gNB, scheduling of the first and second MBS transmissions for reception in different slots.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the first and second MBS-specific common resource pools have different bandwidths.

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein the processing circuitry is further configured to decode, from the gNB, a group common physical downlink control channel (PDCCH) scheduling the first and second MBS transmissions using resource addresses defined in the first and second MBS-specific common resource pools.

### Claim 9 (depends on 8)

The apparatus of claim 8, wherein the processing circuitry is further configured to decode, from the gNB, a control resource set (CORESET) in each of the first and second MBS-specific common resource pools, the CORESET specific to one of the first and second MBS-specific common resource pools in which the CORESET is transmitted.

### Claim 10 (depends on 9)

The apparatus of claim 9, wherein the processing circuitry is further configured to decode, in each CORESET, a radio resource control (RRC) information element (IE) bandwidth part (BWP)-Downlink that contains an MBS-resourcePool IE, the MBS-resourcePool IE comprising an mbs-resourcePool-id parameter that defines an associated MBS-specific resource pool identification (ID) and a locationAndBandwidth parameter that defines a frequency domain location and bandwidth of the associated MBS resource pool in a bandwidth part.

### Claim 11

An apparatus for a 5th generation NodeB (gNB), the apparatus comprising:
processing circuitry configured to:
encode, for transmission to a user equipment (UE), a multicast-broadcast service (MBS) transmission in a first mini-slot of a slot; and
encode, for transmission to the UE, a unicast physical downlink shared data channel (PDSCH) transmission in a second mini-slot of the slot such that the MBS transmission and the unicast PDSCH transmission are time domain multiplexed (TDMed) within the slot; and
a memory configured to store the MBS transmission.

### Claim 12 (depends on 11)

The apparatus of claim 11, wherein the processing circuitry is configured to encode the MBS transmission in at least one leading symbol of the slot.

### Claim 13 (depends on 11)

The apparatus of claim 11, wherein the processing circuitry is further configured to encode, for transmission to another UE, another unicast PDSCH transmission, the other unicast PDSCH transmission frequency division multiplexed (FDMed) with the unicast PDSCH transmission.

### Claim 14 (depends on 11)

The apparatus of claim 11, wherein the processing circuitry is further configured to:
decode, from the UE in response to transmission of the MBS transmission, Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) negative feedback (NACK); and
encode, for transmission to the UE in a third mini-slot of the slot in response to reception of the NACK, another unicast PDSCH transmission, the other unicast PDSCH transmission comprising a retransmission of the MBS transmission.

### Claim 15 (depends on 14)

The apparatus of claim 14, wherein the processing circuitry is configured to encode the MBS in at least one leading symbol of the slot, the unicast PDSCH transmission after the MBS, and the other unicast PDSCH transmission after the unicast PDSCH transmission.

### Claim 16 (depends on 11)

The apparatus of claim 11, wherein the processing circuitry is further configured to encode, for transmission to the UE, a search space (SS) configuration for a SS containing a first group common physical downlink control channel (PDCCH), the first group common PDCCH comprising a first downlink control information (DCI) format to at least one of schedule the MBS transmission or activate or deactivate periodic MBS transmissions.

### Claim 17 (depends on 16)

The apparatus of claim 16, wherein the processing circuitry is further configured to encode, for transmission to the UE, a second SS containing a second group common PDCCH, the second group common PDCCH comprising a second DCI format to schedule another unicast PDSCH transmission, the other unicast PDSCH transmission comprising a retransmission of the MBS transmission, the first and second SS allocated to the slot using TDM.

### Claim 18 (depends on 17)

The apparatus of claim 17, wherein the processing circuitry is further configured to encode, for transmission to the UE, a third SS containing a third group common PDCCH, the third group common PDCCH comprising a third DCI format to schedule the unicast PDSCH transmission, the first, second, and third SS allocated to the slot using TDM.

### Claim 19

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the one or more processors to configure the UE to, when the instructions are executed:
decode, from a 5th generation NodeB (gNB), at least one of first or second multicast-broadcast service (MBS) transmission in a first mini-slot of a slot, the first MBS transmission configured to be transmitted in a first MBS-specific common resource pool, and the second MBS transmission configured to be transmitted in a second MBS-specific common resource pool, the first and second MBS-specific common resource pools configured to be transmitted in a same time period; and
decode, from the gNB, a unicast physical downlink shared data channel (PDSCH) transmission in a second mini-slot of the slot such that the MBS transmission and the unicast PDSCH transmission are time domain multiplexed (TDMed) within the slot.

### Claim 20 (depends on 19)

The medium of claim 19, wherein the instructions, when executed, further cause the one or more processors to configure the UE to:
encode, for transmission to the gNB in response to transmission of the MBS transmission, Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) negative feedback (NACK); and
decode, from the gNB in a third mini-slot of the slot in response to reception of the NACK, another unicast PDSCH transmission, the other unicast PDSCH transmission comprising a retransmission of the MBS transmission.
